FIELD OF THE INVENTION:
The present disclosure relates to a field of device for cable installation / de-installation. More specifically, the present disclosure relates to a device for installation / de-installation of cable between power transmission towers.
BACKGROUND OF THE INVENTION:
Over the years, cables (or alternatively conductors) have been installed on power transmission towers for transmission of electrical energy across long distances. Traditionally, the cables are installed and de-installed between the power transmission towers using cardel block and winch machine.
Apart from the above, in the recent years, a variety of devices have been proposed for the purposes of installing and de-installing the cables between power transmission towers. For example, CN109698475 and , contents of which are incorporated herein, discloses a robot for an overhead transmission line that comprises a walking carrier and a working mechanism. The walking carrier is for walking and obstacle detouring on the transmission line, the working mechanism is mounted on walking carrier by vertical shift joint, the working mechanism includes work machine arm and the operation end positioned on work machine arm end, the work machine arm includes principal arm, the traversing joint of level-one, the traversing joint of second level and pitch link, described principal arm one end is mounted on vertical shift joint by the torsion knuckle rotated in vertical plane, the other end is connected with the traversing joint of level-one, described pitch link one end is mounted on the traversing joint of level-one by pitching joint, the other end is connected with the traversing joint of second level, the traversing joint of second level is equipped with the end rotating platform for installation exercise end.
By way of another example, CN109193465, contents of which are incorporated herein, discloses a robot for overhead transmission line replacement that comprises a traveling wheel, locating wheel, electric pushrod, job platform, job platform rotary joint, stockbridge damper places clamping jaw, stockbridge damper places rotary joint, stockbridge damper crawl clamping jaw, stockbridge damper crawl telescopic joint, stockbridge damper crawl rotary joint, stockbridge damper crawl translation joint, twists stockbridge damper bolt joint, twists stockbridge damper telescopic joint, twists stockbridge damper lifting joint, control cabinet, and holder.

The devices that have been proposed above for the purposes of installing and de-installing the cables between power transmission towers have one or more deficiency, which needs to be addressed.
SUMMARY OF THE INVENTION:
This summary is provided to introduce a selection of concepts in a simplified format that is further described in the detailed description of the invention. This summary is neither intended to identify key or essential inventive concepts of the invention nor is it intended for determining the scope of the invention.
Accordingly, the present invention provides a device for installation / de-installation of cable between two power transmission towers.
According to a first aspect, the device comprises a body member adapted to carry the cable. The device further comprises a set of rollers operably coupled to the body member. The device further comprises an engine operably coupled to the body member, the engine generating variable power. The device further comprises a mechanical power transmission element coupled between the set of rollers and the engine for transferring the variable power from the engine to the set of rollers thereby setting the device into motion. The device furthermore comprises a mechanism for controlling the amount of power generated by the engine. In an embodiment of the invention, the speed of motion of the device can be made to increase by increasing the amount of power generated by the engine, and the speed of motion of the device can be made to decrease by decreasing the amount of power generated by the engine.
According to a second aspect, the device comprises a body member adapted to carry the cable. The device comprises a set of rollers operably coupled to the body, the rollers being adapted to receive energy and in response thereto set the device into motion. The device further comprises a ratchet and a pawl co-operating with the set of rollers to prohibit movement of the set of rollers in a reverse direction in a first state. The device further comprises a first motor adapted to co-operate with the pawl to allow movement of the set of rollers in a reverse direction in a second state. The device furthermore comprises a first controller for controlling operation of the first motor.

To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS:
These and other features, aspects, and advantages of the present invention will become better
understood when the following detailed description is read with reference to the
accompanying drawings in which like characters represent like parts throughout the
drawings, wherein:
Figure 1 illustrates block diagram of the device for installation / de-installation of cable
between two power transmission towers in accordance with an embodiment of the invention;
Figure 2 illustrates block diagram of the mechanical power transmission element in
accordance with an embodiment of the invention;
Figure 3 illustrates block diagram of the mechanism for controlling the amount of power
generated by the engine in accordance with an embodiment of the invention;
Figure 4 illustrates block diagram of the motion control mechanism in accordance with an
embodiment of the invention;
Figure 5 illustrates block diagram showing a control sub-system that controls the cable
installation / de-installation operation or any other operation of the device in accordance with
an embodiment of the invention;
Figure 6 illustrates block diagram of the device for installation / de-installation of cable
between two power transmission towers in accordance with another embodiment of the
invention;
Figure 7 illustrates perspective view of the device for installation / de-installation of cable
between two power transmission towers in accordance with another embodiment of the
invention; and
Figure 8 illustrates top view of the device shown in Figure 7 in accordance with another
embodiment of the invention.
Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow

charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
DETAILED DESCRIPTION OF THE INVENTION:
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the invention and are not intended to be restrictive thereof.
Reference throughout this specification to "an aspect", "another aspect" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other

components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skilled in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
Referring now to Figure 1, there is a block diagram of the device (10) for installation / de-installation of cable between two power transmission towers in accordance with an embodiment of the invention. A device (10) comprises a body member (12) adapted to carry the cable. The device (10) further comprises a set of rollers (14) operably coupled to the body member (12). The device (10) further comprises an engine (16) operably coupled to the body member (12), the engine generating variable power. The device (10) further comprises a mechanical power transmission element (18) coupled between the set of rollers (14) and the engine (16) for transferring the variable power from the engine (16) to the set of rollers (14) thereby setting the device (10) into motion. The device further comprises a mechanism (20) for controlling the amount of power generated by the engine.
In an embodiment of the invention, the speed of motion of the device (10) can be made to increase by increasing the amount of power generated by the engine (16), and the speed of motion of the device (10) can be made to decrease by decreasing the amount of power generated by the engine (16).
In an embodiment of the invention, the set of rollers (14) are adapted for hanging the device (10) on an overhead guide rope installed between the two power transmission towers (not shown).
Referring now particularly to Figure 2, there is illustrated a block diagram of the mechanical power transmission element (18) in accordance with an embodiment of the invention. The mechanical power transmission element (18) comprises a centrifugal clutch (22) defining an input part (24) and an output part (26), the input part (24) being connected to an output part (28) of the engine (16), the centrifugal clutch (22) operating to transfer motion from the input

part (24) to the output part (26). The mechanical power transmission element (18) further comprises a shaft element (30) coupled to the set of rollers (14), the shaft element (30) including a pulley / gear element (32). The mechanical power transmission element (18) further comprises a belt / chain element (34) connected between the output part (26) of the centrifugal clutch (22) and the pulley / gear element (32) for transferring motion thereto.
Referring now particularly to Figure 3, there is illustrated a block diagram of the mechanism (20) for controlling the amount of power generated by the engine (16) in accordance with an embodiment of the invention. The mechanism (20) for controlling the amount of power generated by the engine (16) comprises a link element (34) coupled to the engine (16), a first motor (36) coupled to the link element (34), the first motor (36) being adapted to actuate or de-actuate the link element (34) thereby increasing or decreasing the power generated by the engine, and a first controller (38) for controlling operation of the first motor (36).
In an embodiment of the invention, the mechanism (20) for controlling the amount of power generated by the engine (16) and more particularly, the first controller (38) is configured to receive a control command for increasing / maintaining / decreasing the amount of power generated by the engine from a remote device (40).
In an embodiment of the invention, the first controller (38) is adapted to generate pulse width modulated signals and provide the same to the first motor (36) for controlling operation of the first motor (34), thereby controlling the amount of power generated by the engine (16).
Referring back to Figure 1, in an embodiment of the invention, the device may further comprise a motion control mechanism (42) adapted to prohibit movement of the set of rollers (14) in a reverse direction in a first state and allow movement of the set of rollers (14) in a reverse direction in a second state.
Referring particularly to Figure 4, there is illustrated a block diagram of the motion control mechanism (42) in accordance with an embodiment of the invention. The motion control mechanism (42) comprises a ratchet (44) and a pawl (46) co-operating with the set of rollers (14) to prohibit movement of the set of rollers (14) in a reverse direction (shown by arrow marked as "A") in a first state; a second motor (48) adapted to co-operate with the pawl (46) to allow movement of the set of rollers in a reverse direction (shown by arrow marked as

"B") in a second state; and a second controller (50) for controlling operation of the second motor.
Referring back to Figure 1, in an embodiment of the invention, the device (10) may further comprise a hook (52) for carrying the cable that has to be installed between the two power transmission towers. In an embodiment of the invention, the device (10) may further comprise a drum element (54) operably coupled to a third motor (56) for winding a de¬installed part of the cable.
In an embodiment of the invention, the device further comprises at least one sensor (58) providing at least one signal corresponding to at least one sensed parameter. In an embodiment of the invention, the cable installation / de-installation operation or any other operation of the device (10) may be controlled on the basis of the at least one input signal from the at least one sensor (58), which corresponds to at least one sensed parameter.
Referring to Figure 5, there is illustrated a block diagram showing a control sub-system (60) that controls the cable installation / de-installation operation or any other operation of the device on the basis of the at least one input signal corresponding to at least one sensed parameter. The control sub-system (60) comprises one or more sensors (58) such as anemometer, temperature sensor, humidity sensor, camera, etc. These one or more sensors (58i, 582, 583, ...) produce at least one signal corresponding to the at least one sensed parameter. For instance, the anemometer may produce signals indicative of wind velocity of an environment where the device is located, the temperature sensor may produce signals indicative of temperature within the device, the humidity sensor may produce signals indicative of humidity of an environment where the device is located, and the camera may give live images of an environment where the device is located. The control sub-system (60) further comprises a signal analyzer and control module (62) that receives the signal as produced by the at least one sensor and analysis such signal. In particular, the signal analyzer and control module (62) determines whether the at least one signal thus received satisfies at least one predetermined criterion. For instance, the signal analyzer and control module (62) may determine whether signal produced by the anemometer satisfies first predetermined criteria; the signal analyzer and control module (62) may determine whether signal produced by the temperature sensor satisfies second predetermined criteria; the signal analyzer and control module (62) may determine whether signal produced by the humidity sensor satisfies

third predetermined criteria; and/or the signal analyzer and control module (62) may determine whether live image produced by the camera satisfies fourth predetermined criteria.
In an embodiment of the invention, if the at least one signal thus received satisfies at least one predetermined criterion, the signal analyzer and control module (62) produces at least one control signal (shown by arrow marked as "C") that controls the cable installation / de-installation operation or any other operation of the device and supplies the control signal to a suitable part of the device.
For instance, if the signal produced by the anemometer satisfies first predetermined criteria; the signal analyzer and control module may produce at least one control signal that controls movement of the device. The control signal may be then provided to the parts that impart motion to the device or to parts that may be used for applying brake. By way of another instance, if the signal produced by the temperature sensor satisfies second predetermined criteria; the signal analyzer and control module may produce at least one control signal that controls a fan or a cooling device as may be provided in the device. By way of yet another example, if the signal produced by the humidity sensor satisfies third predetermined criteria; the signal analyzer and control module may produce at least one control signal that controls the cable installation / de-installation operation. By way of still another example, if the live image produced by the camera satisfies fourth predetermined criteria; the signal analyzer and control module may produce at least one control signal that controls the cable installation / de-installation operation.
It may be noted that in relation to the Figures 1 to 5, the first controller (38) and the second controller (50) may combined to form a single controller. It may also be noted that such a single controller may also perform the functions of the signal analyzer and control module (62).
Referring now to Figure 6, there is a block diagram of the device (100) for installation / de-installation of cable between two power transmission towers in accordance with another embodiment of the invention. A device (100) comprises a body member (102) adapted to carry the cable. The device (100) further comprises a set of rollers (104) operably coupled to the body member, the rollers (104) being adapted to receive energy and in response thereto set the device into motion. The device (100) further comprises a ratchet (106) and a pawl (108) co-operating with the set of rollers to prohibit movement of the set of rollers in a

reverse direction in a first state. The device (100) further comprises a first motor (110) adapted to co-operate with the pawl (108) to allow movement of the set of rollers (104) in a reverse direction in a second state. The device (100) further comprises a first controller (112) for controlling operation of the first motor (110).
In an embodiment of the invention, the set of rollers (104) are adapted for hanging the device on an overhead guide rope installed between the two power transmission towers.
In an embodiment of the invention, the set of rollers (104) receive energy from a second motor (114) or an engine (116). In case the set of rollers (104) receive energy from a second motor (114), the second motor (114) may be controlled by a second controller (not shown in Figure 6). In particular, the second controller may increase or decrease the speed of motion of the device by controlling the second motor (114).
On the other hand, if the set of rollers (104) receive energy from an engine (116), the engine (116) may be adapted to generate variable power and a mechanical power transmission element (not shown in Figure 6) may be used for coupling the set of rollers and the engine for transferring the variable power from the engine to the set of rollers thereby setting the device into motion.
In an embodiment of the invention, the mechanical power transmission element may have a construction as described above in relation to Figure 2 and as illustrated in Figure 2. Therefore, the details of the mechanical power transmission element are not being re-explained.
In an embodiment of the invention, if the set of rollers (104) receive energy from an engine (116), there may be provided a mechanism (not shown in Figure 6) for controlling the amount of power generated by the engine. The mechanism for controlling the amount of power generated by the engine may have a construction as described above in relation to Figure 3 and as illustrated in Figure 3. Therefore, the details of the mechanism for controlling the amount of power generated by the engine are not being re-explained.
In an embodiment of the invention, the device may further comprise a hook (not shown in Figure 6) for carrying the cable that has to be installed between the two power transmission towers. In an embodiment of the invention, the device may further comprise a drum element

(not shown in Figure 6) operably coupled to a third motor (not shown in Figure 6) for winding a de-installed part of the cable.
In an embodiment of the invention, the device (100) may further comprise at least one sensor (not shown in Figure 6) providing at least one signal corresponding to at least one sensed parameter. In an embodiment of the invention, the cable installation / de-installation operation or any other operation of the device (100) may be controlled on the basis of the at least one input signal corresponding to at least one sensed parameter.
In an embodiment of the invention, the device may have a control sub-system (not shown in Figure 6) that controls the cable installation / de-installation operation or any other operation of the device on the basis of the at least one input signal corresponding to at least one sensed parameter. The construction and the operation of such control sub-system is described above with relation to Figure 5 and is illustrated in Figure 5. Therefore, the details of the control sub-system are not being re-explained.
Now referring to Figures 7 and 8, there is illustrated a perspective view and a top view of a device (200) for installation / de-installation of cable between two power transmission towers in accordance with still another embodiment of the invention. The device (200) comprises a body member (202). The device (202) further comprises a set of rollers (204) operably coupled to the body member (202). The device (200) further comprises an engine (206) operably coupled to the body member (202), the engine generating variable power. The device (200) further comprises a mechanical power transmission element (208) coupled between the set of rollers (204) and the engine (206) for transferring the variable power from the engine (206) to the set of rollers (204) thereby setting the device (200) into motion. The device further comprises a mechanism (210, which is partly visible in Figure 8) for controlling the amount of power generated by the engine. The device (200) further comprises a ratchet (212, which is visible in Figure 8) and a pawl (214) co-operating with the set of rollers (204) to prohibit movement of the set of rollers (204) in a reverse direction in a first state. The device (200) further comprises a first motor (216) adapted to co-operate with the pawl (214) to allow movement of the set of rollers (204) in a reverse direction in a second state. The device (200) further comprises a first controller (housed within a controller housing 218) for controlling operation of the first motor (216). The device further comprises a fuel tank (220) for accommodating the fuel for supply to the engine (206). The device (200) comprises a variety of other components which are not visible. For example, the device (200)

includes link element connected to the engine (206), a motor operably attached to the link element for controlling the power produced by the engine, and a controller for controlling the motor, all of which are not visible. Likewise, the device comprises a clutch (which forms part of the mechanical power transmission element), which is not visible.
Now coming to the operation of the device, the same is explained under the following heading:
• Controlling speed of the device;
• Safety feature and recovery during emergency; and
• Wireless based operation.
CONTROLLING SPEED OF THE DEVICE:
The engine produces rotational motion and when the RPM (rotation per minute) of the engine is less than a first threshold value, the centrifugal clutch system merely allows the engine to function, without transmitting the rotational motion produced by the engine to the set of rollers. When the RPM (rotation per minute) of the engine is greater than a first threshold value, the centrifugal clutch allows the rotational motion produced by the engine to be transmitted to the set of rollers, thereby bringing the device into motion.
The range of rotational speed as producable by the engine may be divided in three to five stages. A motor is coupled to the engine via a link element for controlling the rotational speed produced by the engine. This is equivalent to a manual system that comprises a throttle grip which is rotatable and which is connected to the engine via a link. The motor may be considered as equivalent to the throttle grip. In the manual system, the throttle grip is rotated while in the present case, the motor is rotated using a pulse-width-modulated (PWM) signal which is produced a controller. Based on the PWM signal, the motor will exhibit motion and will pull or release the link element, thereby increasing or decreasing the power (and RPM) of the engine. The controller which provides the PWM signal to the motor may receive command from a remote control device which may be under the influence of a user.
SAFETY FEATURE AND RECOVERY DURING EMERGENCY:
Since the device is being controlled from remote location, the device should be prohibited from exhibiting movement in reverse direction. At the same time, when the device has to be manually retracted (for example, during emergency situations), reverse movement of the device should be permitted. Thus, device is provided with a ratchet and a pawl mechanism

which are operably coupled to at least one of the roller. The ratchet and pawl mechanism co-operate so as to prohibit movement of the device in reverse direction. The ratchet and pawl mechanism does not prohibit the device from moving in forward direction. The pawl mechanism is controlled by a motor such that the operational interconnection between the pawl and the ratchet can be disengaged. Thus, when the device has to be manually retracted, a signal indicating disengagement of the operational interconnection between the pawl and the ratchet has to be sent by the user via the remote control device. In response to receiving the signal indicating disengagement, the motor which is operably coupled with the pawl, moves the pawl so as to temporarily disengage the pawl from the ratchet. At this point, a user can the device can be manually retracted. The device may be additionally provided with a brake element that acts to retard the speed of the device (and bring the device to a stand-still condition, in case the brake element is continuously actuated). The brake element may function during movement of the device in both forward as well as reverse direction.
WIRELESS BASED OPERATION:
Since the device has to be placed on overhead guide rope installed between the two power transmission towers, controlling of the device is performed using wireless remote controller. The wireless remote controller in addition to sending control command to the device also receives signals from the device. By way of a first example, the wireless remote controller receives the signals as produced by the sensors which are mounted on the device. By way of a second example, the wireless remote controller receives the action confirmation signals from the controller as located on the device. These signals (and other signals as may be received by the wireless remote controller from the device) may be presented to the user so that the user can generate suitable control signal for sending to the device. Thus, it can be said that the controller as disposed on the device is adapted to function as a master device (when it is transmitting the signals to the wireless remote controller, and the wireless remote controller acts as slave device) as well as slave device (when it is receiving the control signals from the wireless remote controller, and the wireless remote controller acts as master device).
While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the present disclosure. Indeed, the device, the parts thereof and the process as performed by the device described herein may be embodied in a variety of other forms. Furthermore, various omissions,

substitutions, and changes in the device, parts thereof and method described herein may be made without departing from the spirit of the present disclosure.

CLAIMS

1.A device for installation / de-installation of cable between two power transmission
towers, said device comprising:
a body member adapted to carry the cable;
a set of rollers operably coupled to the body member;
an engine operably coupled to the body member, the engine generating variable
power;
a mechanical power transmission element coupled between the set of rollers and the
engine for transferring the variable power from the engine to the set of rollers thereby
setting the device into motion; and
a mechanism for controlling the amount of power generated by the engine.
2. The device as claimed in claim 1, wherein the set of rollers are adapted for hanging the device on an overhead guide rope installed between the two power transmission towers.
3. The device as claimed in claim 1, wherein the mechanical power transmission element comprises:
a centrifugal clutch defining an input part and an output part, the input part being
connected to an output part of the engine, the centrifugal clutch operating to transfer
motion from the input part to the output part;
a shaft element coupled to the set of rollers, the shaft element including a pulley / gear
element;
a belt / chain element connected between the output part of the centrifugal clutch and
the pulley / gear element for transferring motion thereto.
4. The device as claimed in claim 1, wherein the speed of motion of the device increases in response to increase in the amount of power generated by the engine, and the speed of motion of the device decreases in response to decrease in the amount of power generated by the engine.
5. The device as claimed in claim 1, wherein the mechanism for controlling the amount of power generated by the engine comprises:
a link element coupled to the engine;

a first motor coupled to the link element, the first motor being adapted to actuate or de-actuate the link element thereby increasing or decreasing the power generated by the engine; and a first controller for controlling operation of the first motor.
6. The device as claimed in claim 1, wherein the mechanism for controlling the amount of power generated by the engine is configured to receive a control command for increasing / maintaining / decreasing the amount of power generated by the engine from a remote device.
7. The device as claimed in claims 5 and 6, wherein the first controller is adapted to generate pulse width modulated signals and provide the same to the first motor for controlling operation of the first motor, thereby controlling the amount of power generated by the engine.
8. The device as claimed in claim 1, comprising a motion control mechanism adapted to prohibit movement of the set of rollers in a reverse direction in a first state and allow movement of the set of rollers in a reverse direction in a second state.
9. The device as claimed in claim 8, wherein the motion control mechanism comprises:
a ratchet and a pawl co-operating with the set of rollers to prohibit movement of the
set of rollers in a reverse direction in a first state;
a second motor adapted to co-operate with the pawl to allow movement of the set of
rollers in a reverse direction in a second state; and
a second controller for controlling operation of the second motor.
10. The device as claimed in claim 1, wherein the body member comprises a hook for carrying the cable.
11. The device as claimed in claim 1, comprising a drum element operably coupled to a third motor for winding a de-installed part of the cable.
12. The device as claimed in claim 1, comprising at least one sensor providing at least one input signal corresponding to at least one sensed parameter and the installation / de-installation of cable is controlled on the basis of the at least one input signal corresponding to at least one sensed parameter.

13. A device for installation / de-installation of cable between power transmission towers,
said device comprising:
a body member adapted to carry the cable;
a set of rollers operably coupled to the body, the rollers being adapted to receive
energy and in response thereto set the device into motion;
a ratchet and a pawl co-operating with the set of rollers to prohibit movement of the
set of rollers in a reverse direction in a first state;
a first motor adapted to co-operate with the pawl to allow movement of the set of
rollers in a reverse direction in a second state; and
a first controller for controlling operation of the first motor.
14. The device as claimed in claim 13, wherein the set of rollers receive energy from a second motor or an engine.
15. The device as claimed in claim 14, wherein the second motor is controlled by a second controller.
16. The device as claimed in claim 14, wherein the engine is adapted to generate variable power and a mechanical power transmission element couples the set of rollers and the engine for transferring the variable power from the engine to the set of rollers thereby setting the device into motion.
17. The device as claimed in claim 16, wherein the mechanical power transmission element comprises:
a centrifugal clutch defining an input part and an output part, the input part being
connected to an output part of the engine, the centrifugal clutch operating to transfer
motion from the input part to the output part;
a shaft element coupled to the set of rollers, the shaft element including a pulley / gear
element;
a belt / chain element connected between the output part of the centrifugal clutch and
the pulley / gear element for transferring motion thereto.
18. The device as claimed in claim 17, comprising a mechanism for controlling the
amount of power generated by the engine.

19. The device as claimed in claim 18, wherein the speed of motion of the device increases in response to increase in the amount of power generated by the engine, and the speed of motion of the device decreases in response to decrease in the amount of power generated by the engine.
20. The device as claimed in claim 18, wherein the mechanism for controlling the amount of power generated by the engine comprises:
a link element coupled to the engine;
a third motor coupled to the link element, the third motor being adapted to actuate or
de-actuate the link element thereby increasing or decreasing the power generated by
the engine; and
a third controller for controlling operation of the third motor.
21. The device as claimed in claim 18, wherein the mechanism for controlling the amount of power generated by the engine is configured to receive a control command for increasing / maintaining / decreasing the amount of power generated by the engine from a remote device.
22. The device as claimed in claims 20 and 21, wherein the third controller is adapted to generate pulse width modulated signals and provide the same to the third motor for controlling operation of the third motor, thereby controlling the amount of power generated by the engine.
23. The device as claimed in claim 13, comprising a drum element operably coupled to a fourth motor for winding a de-installed part of the cable.
24. The device as claimed in claim 13, comprising at least one sensor providing at least one input signal corresponding to at least one sensed parameter and the installation / de-installation of cable is controlled on the basis of the at least one input signal corresponding to at least one sensed parameter.