Claims:We Claim:

1) A conveyor system (100) for loading objects (10) in an object carrying vehicle (11), said conveyor system (100) comprising:
• a fixed platform (20) mounted on a surface and adjacent to the container (12) of the object carrying vehicle (11) such that the surface of said fixed platform (20) substantially in level with the surface of the bed (12c) of the container (12);

• a plurality of first conveying elements (21) movable on said fixed platform (20) to convey loaded objects (10), adjacently disposed said first conveying elements (21) spaced at a defined distance;

• a first driving unit (22) configured to drive said first conveying elements (21);

• a plurality of sets of trolleys (30) configured to move in:

- an extended configuration in which said sets of trolleys (30) extend-out from said fixed platform (20) and move on the bed (12c) of the container (12) to reach the internal end wall (12b) of container (12) being opposite to tail gate (12a); and
- a retracted configuration in which said sets of trolleys (30) retract-in the space between the adjacently disposed first conveying elements (21) by movement on said fixed platform (20);

each set of trolley (30) defined with a carriage (31) having a plurality of rolling elements (32) disposed underneath and a second conveying element (33) movably disposed on said carriage (31),

• a second driving unit (34) configured to drive said second conveying elements (33) of each sets of trolleys (30), said second conveying elements (33) configured to move said carriage (31) on said rolling elements (32), said second driving unit (34) is bi-directional;
• a braking unit (40) in connection with said second driving unit (34), said braking unit (40) in an operative configuration configured to allow movement of said sets of said trolleys (30) to achieve said extended configuration and said retracted configuration, said braking unit (40) in an in-operative configuration configured to stop extend-out and retract-in movements of said trolleys (30);
• a stopper unit (50) for at least one of said carriages (31) and said rolling elements (32), said stopper unit (50) in an operative configuration restrict retract-in movement of at least one of said carriages (31) and said rolling elements (32) and enable synchronous movement of said second conveying elements (33) with said first conveying elements (21), said stopper unit (50) in an in-operative configuration configured to allow retract-in movement of said carriages (31) and said rolling elements (32);
• at least one sensor disposed on said sets of trolleys (30) to sense the position of said sets of trolleys (30) with respect to the object carrying vehicle (11); and
• at least one controller in communication with said at least one sensor said controller configured to actuate said second driving unit (34) and said braking unit (40) to allow synchronous movement of said sets of said trolleys (30) till said at least one sensor signal said controller that said sets of trolleys (30) reach the internal end wall (12b) of said container (12), said controller further configured to deactivate said braking unit (40), activate said stopper unit (50) to restrict movement of said at least one of said carriages (31) and said rolling elements (32) and activate said first driving unit (22) such that said objects (10) move from said first conveying elements (21) and said second conveying elements (33) synchronous with said first conveying elements (21) and fall on said bed (12c), said controller further release said stopper unit (50), reverse the direction of said second diving unit (34) and actuate said braking unit (40) to retract said sets of said trolleys (30), retraction of said trolleys (30) enable transfer of objects on the bed (12c) of the container (12).

2) The conveyor system (100) as claimed in claim 1, wherein said fixed platform (20) provided with an adjusting mechanism to lower, raise and/or tilt said fixed platform such that the surface of said fixed platform (20) is substantially in level with the surface of said bed (12c) of said container (12).

3) The conveyor system (100) as claimed in claim 1, wherein said first conveying elements (21) and said second conveying elements (33) are chain conveyors.

4) The conveyor system (100) as claimed in claim 1, wherein each sets of said trolleys (30) configured to connect with a sloping portion (35) provided with at least one third conveying element (36) to unload objects from said second conveying elements (21) on the bed (12c).

5) The conveyor system (100) as claimed in claim 1, wherein said rolling elements (32) are roller cassettes, said braking unit (40) includes a plurality of brake mechanisms, each brake mechanism includes a braking cylinder (41), a gear arrangement with idler sprockets (42) and a pair of brake pads (43), said stopper unit (50) includes a plurality of stopper mechanisms and each stopper mechanism includes a pneumatic cylinder (51), a guide bush (52) and a stopper (53).

6) A method for loading objects (10) in an object carrying vehicle by a conveyor system (100), said method comprising:
• loading objects (10) on a plurality of first conveying elements (21) disposed on a fixed platform (20), wherein the surface of the fixed platform (20) is substantially in level with the surface of the bed (12c) of the container (12);
• directing, by a controller, actuation of a braking unit (40) and a second driving unit (34), being bi-directional, to allow movement of said second conveying elements (33) and thereby enable movement of respective carriages (31) on a respective plurality of rolling elements (32) of said sets of trolleys (30) and each set of trolleys (30) configured to achieve:
- an extended configuration of each set of trolleys (30) in which said sets of trolleys extend-out from said fixed platform (20) and move on the bed (12c) of the container (12) to reach the internal end wall (12b) of said container (12) being opposite to tail gate (12a);
• sensing, by at least one sensor, disposed on said sets of trolleys (30), movement of said sets of trolleys (30) with respect to the object carrying vehicle (11);
• communicating by said at least one sensor to said controller in event when said sets of said trolleys (30) reach the internal end wall (12b);
• directing by said controller, de-activation of said braking unit (40) to prevent further movement of said sets of trolleys (30);
• directing by said controller, actuation of a stopper unit (50) for restricting retract-in movement of at least one of said carriages (31) and said rolling elements (32) and enabling movement of said second conveying elements (33) by said second driving unit (34);
• actuating, upon direction received by said controller, a first driving unit (22) such that said first driving unit (22) being synchronous with said second driving unit (34), actuation of said first driving unit (22) enables movement of loaded objects (10) from said first conveying elements (21) to said second conveying elements (33) till it reaches the internal end wall (12b) of the container (12);
• de-activating, upon direction received by controller, said first driving unit (22);
• directing by said controller, reversing of said second driving unit (34) and actuation of said braking unit (40); and
• directing by said controller, releasing of said stopper unit (50) to release at least one of said carriage (31) and said rolling elements (32),
such that said sets of trolleys (30) have a retracted movement by retraction of said second conveying elements (33) and thereby respective carriage (31) and respective rolling elements (32) and achieve:
- a retracted configuration of each set of trolleys (30) in which said sets of trolleys (30) retract-in the space between the adjacently disposed first conveying elements (21) by movement on said fixed platform (20),
said retract-in movement of said trolleys (30) enable transfer of objects on the bed (12c) of the container (12).

7) The method as claimed in claim 6, further includes the step of adjusting said fixed platform (20) by an adjusting mechanism by lowering, raising and/or tilting such that said the surface of said fixed platform (20) is substantially in level with the surface of surface of the bed (12c) of the container (12).

8) The method as claimed in claim 6, further includes the step of unloading, on the bed (12c), objects from a sloping portion (35) provided with at least one third conveying element (36) connected to said second conveying elements (21).

9) The method as claimed in claim 6, further includes the step of operating manually at least one of said driving unit (22), said second driving unit (34), said braking unit (40) and said stopper unit (50).

DATED THIS 22nd day of May, 2019

GARGI PHADATARE
(IN/PA/2209)
PATENT AGENT OF APPLICANT
, Description:
FORM – 2

THE PATENTS ACT, 1970
(39 of 1970)

&

THE PATENTS RULES, 2003

COMPLETE SPECIFICATION
(See section 10 and rule 13)

CONVEYOR SYSTEM AND METHOD FOR LOADING OBJECTS IN OBJECT CARRYING VEHICLES

IMPRESSION SYSTEMS AND ENGINEERS
PRIVATE LIMITED
AN INDIAN COMPANY OF
357/68/69, Waghjai Nagar, Kharabwadi, Chakan,
City: Pune, State: Maharashtra,
Country: India, Pin Code: 410501

The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD
[001] The present disclosure relates to a conveyor. Particularly, the present disclosure relates to a conveyor system and method for loading an object carrying vehicle such as a truck or tempo.

BACKGROUND
[002] Loading a truck with objects is a time consuming activity and one needs to be dependent on a number of manpower for execution. However, arranging and following-up manpower is a difficult task. Further, conventional conveyors require two chain mechanisms. One chain mechanism is used to push-in and pull-out a conveyor belt and another to push objects for unloading. The usage of two mechanisms increases structural complexity, purchase cost and maintenance cost.

[003] Hence, there is a need for a conveyor system and method for loading an object carrying vehicle such as a truck or tempo that can alleviate some of the above-mentioned drawbacks.

OBJECTS
[004] Some of the objects of the arrangement of the present disclosure are aimed to ameliorate one or more problems of the prior art or to at least provide a useful alternative and are listed herein below.

An object of the present disclosure is to provide a conveyor system that loads objects in an object carrying vehicle that is structurally less complex with minimal number of components.

Another object of the present disclosure is to provide a conveyor system that is cost efficient.

Still another object of the present disclosure is to provide a conveyor system that is automatic and requires minimal and manpower for execution.
Yet another object of the present disclosure is to provide a conveyor system that includes a braking unit and a stopper unit that eases the conveying and unloading of objects.

Still another object of the present disclosure is to provide a method for loading objects by the conveyor system that requires less manpower.

Other objects and advantages of the present disclosure will be more apparent from the following description when read in conjunction with the accompanying figures, which are not intended to limit the scope of the present disclosure.

SUMMARY

[005] A conveyor system for loading objects in an object carrying vehicle is disclosed in accordance with one embodiment of the present disclosure. The conveyor system includes a fixed platform, a plurality of first conveying elements, a first driving unit, a plurality of sets of trolleys, a second driving unit, a braking unit, a stopper unit, at least one sensor and at least one controller. The fixed platform is mounted on a surface and adjacent to the container of the object carrying vehicle such that surface of the fixed platform substantially in level with the surface of the bed of the container. The plurality of first conveying elements is movable on the fixed platform to convey loaded objects. The adjacently disposed first conveying elements are spaced at a defined distance. The first driving unit drives the first conveying elements. The plurality of sets of trolleys moves in:
- an extended configuration in which the sets of trolleys extend-out from the fixed platform and move on the bed of the container to reach the internal end wall of container being opposite to tail gate; and
- a retracted configuration in which the sets of trolleys retract-in the space between the adjacently disposed first conveying elements by movement on said fixed platform.
Each set of trolley is defined with a carriage having a plurality of rolling elements disposed underneath and a second conveying element movably disposed on the carriage.
The second driving unit is bi-direction and drives the second conveying elements of each sets of trolleys. The second conveying elements move the carriage on the rolling elements. The braking unit is in connection with the second driving unit. The braking unit in an operative configuration configured to allow movement of the sets of the trolleys to achieve the extended configuration and the retracted configuration. The braking unit in an in-operative configuration stops extending-out and retracting-in movements of the trolleys. The stopper unit is used for at least one of the carriage and the rolling elements. The stopper unit in an operative configuration restricts retract-in movement of at least one of the carriages and the rolling elements and enables synchronous movement of the second conveying elements with the first conveying elements. The stopper unit in an in-operative configuration allows retract-in movement of the carriages and the rolling elements. The sensor is disposed on the sets of trolleys to sense the position of the sets of trolleys with respect to the object carrying vehicle. The at least one controller is in communication with the at least one sensor the controller to actuate the second driving unit and the braking unit to allow synchronous movement of the sets of the trolleys till the at least one sensor signals the controller that the sets of trolleys reach the internal side wall of the container. The controller is further configured to deactivate the braking unit and activate the stopper unit to restrict movement of the at least one of the carriages and the rolling elements and activate the first driving unit such that the objects move from the first conveying elements and the second conveying elements synchronous with the first conveying elements and fall on the bed. The controller further reverses the direction of the second driving unit, releases the stopper unit and actuates the braking unit to retract the sets of the trolleys. The retraction of the trolleys enables transfer of objects on the bed of the container from the second conveying elements.
The present disclosure also discloses a method for loading objects in an object carrying vehicle by a conveyor system. The method includes:
• loading objects on a plurality of first conveying elements disposed on a fixed platform, wherein the surface of the fixed platform is substantially in level with the surface of the bed of the container;
• directing, by a controller, actuation of a braking unit and a second driving unit to allow movement of the second conveying elements and thereby enable movement of respective carriages on a respective plurality of rolling elements of the sets of trolleys and each set of trolleys configured to achieve:
- an extended configuration of each set of trolleys in which said sets of trolleys extend-out from the fixed platform and move on the bed of the container to reach the internal end wall of container is opposite to tailgate;
• sensing, by at least one sensor, disposed on the sets of trolleys, movement of the sets of trolleys with respect to the object carrying vehicle;
• communicating by the at least one sensor to the controller in event when the sets of the trolleys reach the internal end wall;
• directing by the controller, de-activation of the braking unit to prevent further movement of the sets of trolleys;
• directing by the controller, actuation of a stopper unit for restricting retract-in movement of at least one of the carriage and the rolling elements and enabling movement of the second conveying elements by the second driving unit;
• actuating, upon direction received by the controller, a first driving unit such that the first driving unit is synchronous with the second driving unit, actuation of the first driving unit enables movement of loaded objects from the first conveying elements to the second conveying elements till it reaches the internal end wall of the container;
• de-activating, upon direction received by controller, the first driving unit;
• directing, by the controller, to reverse the direction of the second driving unit, actuation of the braking unit; and
• directing by the controller, releasing of the stopper unit to release at least one of the carriage and the rolling elements,
such that the sets of trolleys have a retracted movement by retraction of the second conveying elements and thereby respective carriers and respective rolling elements and achieve:
- a retracted configuration of each set of trolleys in which the sets of trolleys retract-in the space between the adjacently disposed first conveying elements by movement on the fixed platform,
the retract-in of the trolleys enable transfer of objects on the bed of the container from the second conveying elements.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[006] A conveyor system and method of the present disclosure will now be described with the help of the accompanying drawings, in which:

Figure 1 illustrates a schematic representation of a conveyor system, in accordance with one embodiment of the present disclosure;

Figure 2 illustrates a perspective view of a fixed platform with a plurality of first conveying elements of the conveyor system of Figure 1;

Figure 3 illustrates a schematic representation of the fixed platform, a first driving unit and a second driving unit of the conveyor system of Figure 1;

Figure 4 illustrates a perspective view of a sloping portion connected the frontal portion of all the trolleys of the conveyor system of Figure 1;

Figure 5 illustrates an exploded view of the first conveying elements and second conveying elements;

Figure 6 illustrates a schematic view of the trolley of Figure 4 in an extended configuration and detail views of the frontal portion of the trolley and a stopper unit of the conveyor system of Figure 1;

Figure 7 illustrates a schematic view of rolling elements of the conveyor system of Figure 1, wherein the rolling elements are in form of roller cassette;

Figure 8 illustrates a sectional view of a braking unit of the conveyor system of Figure 1;

Figure 9 illustrates an exploded view of the braking unit of Figure 7;

Figure 10 illustrates a perspective view of a stopper unit of the conveyor system of Figure 1;

Figure 11 illustrates a perspective view of objects positioned on respective pallets moving from the first conveying elements to the second conveying elements;

Figure 12 illustrates a typically representation of the objects positioned on the pallets has reached proximal to the internal end wall of the container;

Figure 13 illustrates a perspective view of the objects falling on the bed of the container by reverse movement of the second conveying elements; and

Figure 14 illustrates another perspective view in which one object is positioned on the bed while another yet on the second conveying elements.

DETAILED DESCRIPTION

[007] Referring now to the drawings, Figures 1-14, where the present invention is generally referred to with numeral (100), it can be observed that a conveyor system, in accordance with one embodiment, is provided that includes a fixed platform (20), a plurality of first conveying elements (21), a first driving unit (22), a plurality of sets of trolleys (30), a second driving unit (34), a braking unit (40), a stopper unit (50), at least one sensor (not illustrated in the Figures) and at least one controller (not illustrated in the Figures).

[008] The fixed platform (20) is mounted on a surface, typically on the ground. The object carrying vehicle is moved such that the tail gate (12a) of the container (12) is disposed adjacent the fixed platform (20) and the tail gate (12a) touches with the fixed platform (20). The fixed platform (20) and the container (12) are arranged such that the surface of the fixed platform (20) is substantially in level with the surface of the bed (12c) of the container (12). In one embodiment, the fixed platform (20) is provided with an adjustment mechanism (not illustrated in Figures). The adjustment mechanism lowers, raises and/or tilts the fixed platform (20) such that the surface of the fixed platform (20) is substantially in level with the surface of the bed (12c) of the container (12).

[009] The plurality of first conveying elements (21) is disposed and movable on the fixed platform (20). The first conveying elements (21) are loaded with the objects (10) to be conveyed and convey loaded objects (10). In one embodiment, objects (10) are mounted on pallets (13) and pallets (13) are positioned on the first conveying elements (21). The adjacently disposed first conveying elements (21) are spaced at a defined distance. Typically, the first conveying elements (21) are, but not limited to, chain conveyor.

[010] The first driving unit (22) drives the first conveying elements (21). The first driving unit (22) can be an electric motor. The first driving unit (22) is actuated and de-actuated upon the signal received from the controller. However, the first driving unit (22) can be actuated and de-actuated manually. Optionally, the first driving unit (22) can be actuated and de-actuated upon the signal received from the controller as well as provided with manual actuation and de-actuation.

[011] Each set of trolleys (30) includes a carriage (31), a plurality of rolling elements (32) and a second conveying element (33). The plurality of rolling elements (32) is disposed underneath each carriage (31). Typically, the rolling elements (32) are roller cassettes. The second conveying element (33) is movably disposed on the carriage (31) and configured to move. Typically, the second conveying element (33) is, but not limited to, a chain conveyor. Each set of trolleys (30) are defined to move from a retracted configuration to an extended configuration and vice-versa. In an extended configuration, the sets of trolleys (30) extend-out from the fixed platform (20) and move on the bed (12c) of the container (12) to reach the internal end wall (12b) of container (12). The internal end wall (12b) is opposite to tail gate (12a). In the retracted configuration, the sets of trolleys (30) retract-in the space between the adjacently disposed first conveying elements (21) by movement on the fixed platform (20). In one embodiment, the movement of the second conveying element (33) enables the carriage (31) to move on the rolling element (32) and achieve extend-out and retract-in configurations of the trolley (30) and hence the second conveying element (33) acts as a carrier. In another embodiment, the second conveying element (33) only moves and the carriage (31) and the rolling element (32) are restricted/stopped from moving and hence the second conveying element (33) acts as a conveyer. In one embodiment, each sets of the trolleys (30) has a frontal portion connected with a sloping portion (35) provided with at least one third conveying element (36) to unload objects from the second conveying elements (21) on the bed (12c). The slope of the sloping portion (35) and the third conveying element (36) provides easy unloading. In another embodiment, the sloping portion (35) may not be provided with the third conveying element (36). The sloping portion (35) also provides frontal connection of all sets of trolleys (30).

[012] The second driving unit (34) drives the second conveying elements (33) of each sets of trolleys (30) and the second conveying elements (33) move the carriage (31) on the rolling elements (32). The second driving unit (34) is bi-directional and moves the second driving unit (34) and thereby the sets of trolleys (30) in bi-direction, i.e. moves inside the container (12) and retract-out from the container (12) The second driving unit (34) is actuated and de-actuated upon the signal received from the controller. However, the second driving unit (34) can be actuated and de-actuated manually. Optionally, the second driving unit (34) can be actuated and de-actuated upon the signal received from the controller as well as provided with manual actuation and de-actuation.

[014] The braking unit (40) is in connection with the second driving unit (34). In an operative configuration, the braking unit (40) engages to allow a connection between the second driving unit (34) and the second conveying elements (33) of the trolleys (30) and hence enables movement of the sets of the trolleys (30) to achieve the extended configuration and the retracted configuration. In an in-operative configuration, the braking unit (40) disengages connection between the second driving unit (34) and the second conveying elements (33) and hence the trolleys (30) are stopped to extend-out and retract-in movements of the trolleys (30). In one embodiment, the braking unit (40) includes a plurality of brake mechanisms. Each brake mechanism includes a braking cylinder (41), a gear arrangement with idler sprockets (42) and a pair of brake pads (43).

[015] The stopper unit (50) is provided for at least one of the carriages (31) and/or the rolling elements (32). In an operative/actuated configuration, the stopper unit (50) restricts retract-in movement of at least one of the carriages (31) and the rolling elements (32) and enables synchronous movement of the second conveying elements (33) with the first conveying elements (21). In an in-operative/de-activated configuration, the stopper unit (50) to allows retract-in movement of the carriages (31) and the rolling elements (32) along with the movement of the second conveying elements (33). The stopper unit includes a plurality of stopper mechanisms and each stopper mechanism includes a pneumatic cylinder (51), a guide bush (52) and a stopper (53).

[016] The at least one sensor is disposed on the sets of trolleys (30) to sense the position of the sets of trolleys (30) with respect to the object carrying vehicle (11). Typically, the at least one sensor is disposed on the sloping portion (35) or the frontal portion of the sets of the trolleys (30). Optionally, sensors can also be provided to sense the loading of objects (10) on the first conveying elements (21), determining position of loaded objects (10) on the first conveying elements (21) and the second conveying elements (33) or similar other purposes.

[017] The controller is in communication with the at least one sensor. The controller signals to actuate the second driving unit (34) and the braking unit (40) to allow synchronous movement of the sets of the trolleys (30) till the at least one sensor signals the controller that the sets of trolleys (30) reach the internal end wall (12b) of the container (12). The controller further signals to deactivate the braking unit (40) and activate the stopper unit (50) to restrict movement of the at least one of the carriages (31) and the rolling elements (32) and activate the first driving unit (22) such that the objects (10) moves from the first conveying elements (21) and the second conveying elements (33) which is synchronous with the first conveying elements (21) and fall on the bed (12c). The controller further reverses the direction of the second driving unit (34), releases the stopper unit (50) and actuates the braking unit (40) to retract the sets of the trolleys (30). The retraction causes the objects (10) to be positioned on the bed (12c) from the second conveying elements (33).

[018] The present disclosure also discloses a method for conveying objects (10) by using the conveyor system (100), in accordance with one embodiment of the present disclosure. The method includes loading of objects (10) on the first conveying elements (21) disposed on the fixed platform (20), wherein the surface of the fixed platform (20) is substantially in level with the surface of the bed (12c) of the container (12). In one embodiment, the fixed platform (20) is adjusted by the adjustment mechanism to lower, raise, tilt and/or provides horizontal movement to be in touch with the tail gate (12a) of the vehicle. The controller directs actuation of the braking unit (40) and the second driving unit (34) to allow movement of the second conveying elements (33) and thereby enable movement of respective carriages (31) on a respective plurality of rolling elements (32) of the sets of trolleys (30) and each set of trolleys (30) configured to achieve:
- an extended configuration of each set of trolleys (30) in which the sets of trolleys extend-out from the fixed platform (20) and move on the bed (12c) of the container (12) to reach the internal end wall (12b) of the container (12), wherein the internal end wall (12b) is the wall opposite to tail gate (12a).
[020] The sensor senses movement of the sets of trolleys (30) with respect to the object carrying vehicle (11). In event when the sensor senses that the sets of trolleys (30) have reached the internal end wall (12b) of the container (12), the sensor communicates the controller that the sets of trolleys (30) have reached the internal wall (12b) of the container (12). Upon receiving signal from the sensor, the controller signals to de-activate the braking unit (40) to prevent further movement (forward or reverse) of the sets of trolleys (30). Simultaneously, the controller directs actuation of the stopper unit (50) for restricting retract-in movement of at least one of the carriages (31) and the rolling elements (32) and enabling movement of the second conveying elements (33) by the second driving unit (34). The controller further directs actuating the first driving unit (22) such that the first driving unit (22) is synchronous with the second driving unit (34) and thereby the first conveying elements (21) are synchronous to the second conveying elements (33). The actuation of the first driving unit (22) enables movement of loaded objects (10) from the first conveying elements (21) to the second conveying elements (33) till it reaches the internal end wall (12b) of the container (12). Once the loaded objects (10) are reached at the internal end wall (12b) of the container (12), the controller directs de-activation of the first driving unit (22), reversing the movement of the second driving unit (34), the actuation of the braking unit (40) and releasing the stopper unit (50) to release at least one of the carriage (31) and the rolling elements (32) such that the sets of trolleys (30) have a retracted movement by retraction of the second conveying elements (33) and thereby respective carriages (31) and respective rolling elements (32) and achieve:
- a retracted configuration of each sets of trolleys (30) in which the sets of trolleys (30) retract-in the space between the adjacently disposed first conveying elements (21) by movement on the fixed platform (20).

The retraction of the second conveying elements (33), respective carriages (31) and respective rolling elements (32) causes unloading of objects (10) on the bed (12c) of the container (12). More specifically, the controller directs reversing of the second driving unit (34) and the braking unit and actuation of the braking unit (40) which thereby reverses sets of trolleys (30). As the second conveying elements (33) are connected/anchored with the braking unit (40) and the second conveying elements (33) cannot move relative to container (12) of the object carrying vehicle (11), the second conveying element (33) starts to retract/pull back the sets of trolleys (30). As a result, the sets of trolleys (30) starts retracting and thereby moving out of the container (12) and the objects (10) disposed on the second conveying elements (33) starts to fall on the bed (12c) of the container (12). In one embodiment, the second conveying elements (33) are attached to the sloping portion (35) and optionally provided with the third conveying elements (36). The sloping portion (35) and the third conveying elements (36) aid the unloading of objects (10).

[020] The method further includes the step of manually operating at least one of the driving unit (22), the second driving unit (34), the braking unit (40) and the stopper unit (50) in event of failure of the sensor and the controller or when the conveyor system (100) is not provided with the sensor and the controller.

[021] As the conveyor system (100) utilizes the second conveying elements (33) to achieve forward and reverse movements and as well as conveyor to convey objects (10), the conveyor system (100) of the present disclosure does not require two different mechanism or separate chain drives as conventionally requires. Hence the conveyor system (100) of the present disclosure requires fewer components, less cost for fewer components and less maintenance. Further, the conveyor system can fully load the object carrying vehicles approximately less than five minutes and does not require more labors except for operation of the conveyor system (100).

[022] The foregoing description conveys the best understanding of the objectives and advantages of the present invention. Different embodiments, steps or alternatives may be made of the inventive concept of this invention. It is to be understood that all matter disclosed herein is to be interpreted merely as illustrative, and not in a limiting sense.