DESC:FIELD OF THE INVENTION
The present invention relates to a truck mounted modular wireline winch (TMMWW). More particularly, the present invention relates to a truck mounted modular wireline winch is a hydraulic wireline winch in the form of a modular skid loaded on a heavy-duty truck that makes the winch portable and provides economical operations.

BACKGROUND OF THE INVENTION
Winches are hauling or lifting devices consisting of a rope or chain winding around a horizontal rotating drum, turned typically by a crank or by the motor. The hydraulic winch operates through a hydraulic system of a vehicle, vividly through a power steering pump.
Hydraulic winches utilize hydraulic oil as fluid power. The fluid is stored in a reservoir. A pump draws fluid oil from the reservoir and supplies pressurized oil to a motor, which in turn rotates a wire to wind/unwind a wire across the drum. Hydraulic pumps do not get overheated as excess pressurized oil returns back to the reservoir through a relief valve.
The flow in the system is controlled with a reservoir, pump, and several other valves. Maximum protection is provided by features like automatic braking, emergency stop button, drum locking system, pawl brake, and other prevention systems.
US7438280B2 discloses a wireline cable winch drum including a core having a longitudinal axis; a pair of flanges spaced apart and extending radially outwardly from the core; and a wireline cable wrapped around the core in the space between the flanges. In one embodiment, at least one of the flanges includes an inner surface that contacts the wireline cable and forms an angle with respect to the longitudinal axis of the core. The spooling arm may be electrically connected to a control system in a cab portion of the truck and controlled by an operator located therein. The spooling arm may also include a cable mounted tension device, which is the primary device for measuring the tension in the cable. As alluded above, if the cable mounted tension device fails, then the sensors may be used as backups to also measure the tension in the cable. But this invention fails to disclose about an additional powering unit and also an operator cabin is not mentioned.
CN207499863U discloses the electric drive logging vehicle that utilizes the chassis of the automobile to drive the self-generating system, and drives the winch through the control system the control system achieves precise control of depth, speed and tension to ensure accurate and stable operation of the winch. At the same time, the power generation system must ensure other power requirements of the entire vehicle. The electric drive logging truck realizes all the functions of the logging truck. In the horizontal well logging condition, it is required that the cable’s rise and fall should be synchronized with the drilling tool and the cable is maintained at a constant tension. Further, an electric drive logging vehicle includes a carriage assembly that forms a space with the chassis, the actuator, the drive mechanism, the power distribution cabinet, the console, the control cabinet, the energy consuming device, three groups of a first cable reel assembly and/or three groups of a second cable reel assembly. The assembly group (three groups of a second cable reel assembly) is inside a space formed by the trunk assembly and the chassis. But the invention fails to disclose about the operator cabin and measuring assembly.
US9133676B2 discloses a technique for axial vibration control of wireline tools and cables during logging operations. In undesirable cases the axial vibrations may lead to or exasperate the stick-slip problems of the logging tool. Control systems and strategies to minimize vibrations and techniques for identifying and inhibiting the sticking of the cable. A system includes a surface actuator and a sensor. The actuator generates an axial wave on the wireline cable which travels down the cable. If there is sticking of the cable, a possibility of reflection at the location of sticking. This shift in the transmission of the wave on the wireline cable is used to identify the onset and/or presence of sticking. A data processing unit is included, which according to some embodiments, is located within logging truck and according to other embodiments is partially or fully located at other locations at the well site or one or more remote locations. The data processing unit receives the measurements from the logging tool, and cable tension monitoring device. But the invention does not disclose a separate powering unit and operator cabin.
Therefore, there is a need of improvement in technology of truck mounted wireline winch system to make it more portable and economic.

OBJECT OF THE INVENTION
Main object of the present invention is to provide a truck mounted modular wireline winch (TMMWW) in the form of modular skids mounted on a heavy duty truck.
Another main object of the present invention is to provide a separate power source engine for driving drum assembly.
Yet another object of the present invention is to provide a truck mounted modular wireline winch (TMMWW) with a speed and tension measuring head assembly.
Yet another object of the present invention is to provide a truck mounted modular wireline winch (TMMWW) with a linear automatic spooling of wire across the drum.
Yet another object of the present invention is to provide a truck mounted modular wireline winch (TMMWW) with a closed loop hydraulic circuit.
Yet another object of the present invention is to provide a truck mounted modular wireline winch (TMMWW) with a control panel including various controls and a multipurpose joystick.
Still another object of the present invention is to provide a TMMWW with quick release couplings and a two-position six-way switch.

SUMMARY OF THE INVENTION
The present invention relates to a truck mounted modular wireline winch (TMMWW) with vehicle engine as an optional power source.
In a main embodiment, the present invention provides a truck mounted modular wireline winch comprising a truck chassis, a lifting eye, modular skid units, an operator cabin, a drum, measuring head assembly and a power take off (PTO) unit. The modular skids are mounted on the truck chassis for the said type of the hydraulic wireline winch. There are two types of modular skid units: (a) power skid unit, and (b) reel skid unit. The power skid unit includes a power source engine being used as primary power source to drive a drum assembly. Further, vehicle engine is used as an alternative secondary power source to drive the drum assembly. The vehicle engine is made to drive the drum assembly through a power take off (PTO) unit. It is used as an optional power source engine for driving drum assembly. Based on the operational requirement, a two position six-way switch makes a selection between the primary power source and the secondary power source to drive the drum assembly. An engine provided in the power skid is equipped with all Zone-2 rated components.
In yet another embodiment, the present invention provides a truck mounted modular wireline winch having two variable displacement hydraulic pumps. First hydraulic pump is coupled directly to a shaft of an engine located in the power skid unit. Second hydraulic pump is coupled to a power take-off (PTO) unit on a direct drive from the vehicle’s engine. The two position six-way switch selects pressurized hydraulic oil either from the first hydraulic pump or from the second hydraulic pump to drive a hydraulic motor in the reel drum area. High pressure hydraulic hoses are utilized between the two skid units through quick release couplings. The present invention utilizes a closed loop hydraulic circuit for power transmission from an engine to the reel drum assembly.
In yet another embodiment, the present invention provides a truck mounted modular wireline winch with the power skid area and the reel skid unit area comprising of two parts i.e. (a) operator cabin, and (b) reel drum area. Reel drum area is accommodating a measuring head assembly that provides measurements on the wireline like the length, tension or load on the wireline. According to some embodiments the measuring head has a tension load pin and encoder are configured to different outputs. The reel drum area also has a linear spooling arrangement. Also, reel drum area has a hydraulic motor that drives the reel drum through a gear box and a dual chain and sprocket arrangement. The operator cabin is fully air conditioned. It further has large window overlooking the reel drum area and the field operation area to the engineer/operator. Further, the operator cabin has control and display panels providing control and display of different parameters and measurements of operations from both the skid units. The electricity requirements for air conditioning, lighting etc. are met from a hydraulic alternator located in the power skid unit.

BRIEF DESCRIPTION OF THE DRAWINGS
An understanding of the present invention related to a truck mounted modular wireline winch (TMMWW) with vehicle engine as an optional power source may be obtained by reference to the following drawing:
Fig. 1 is a side view of the truck mounted modular wireline winch (TMMWW) with vehicle engine as an optional power source.
Fig. 2 is a top view of the truck mounted modular wireline winch (TMMWW) with vehicle engine as an optional power source.

DETAILED DESCRIPTION OF THE INVENTION
The present invention will now be described hereinafter with reference to the accompanying drawings in which a preferred embodiment of the invention is shown. This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough, and will fully convey the scope of the invention to those skilled in the art.
Many aspects of the invention can be better understood with references made to the drawings below. The components in the drawings are not necessarily drawn to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, like reference numerals designate corresponding parts through the several views in the drawings. Before explaining at least one embodiment of the invention, it is to be understood that the embodiments of the invention are not limited in their application to the details of construction and to the arrangement of the components set forth in the following description or illustrated in the drawings. The embodiments of the invention are capable of being practiced and carried out in various ways. In addition, the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
The present invention relates to a truck mounted modular wireline winch including a primary power source engine to operate a drum assembly and a vehicle engine being used an alternative secondary power source engine to operate the drum assembly through a power take-off (PTO) unit.
Referring to Fig. 1 in the main embodiment, the present invention provides a truck mounted modular wireline winch which comprises of a truck chassis (8), a lifting eye (1), modular skids units (2, 4), an operator cabin (3), a drum (5a) and a power take-off (PTO) unit (24). These self-contained and replaceable modular skid units (2, 4) are assembled in heavy duty frames. Lifting eyes (1) are provided at a top of each of the frame so that the modular skid units (2, 4) are lifted by using slings in order to get mounted on the truck chassis (8). The replaceable modular skid units (2, 4) being mounted on the truck chassis (8) are of two kinds: (a) power skid unit (2), and (b) reel skid unit (4). The reel skid unit (4) further comprises of two parts: (a) an operator cabin (3), and (b) a reel drum area (6). The reel drum area (6) includes a reel drum (5a) which is having steel construction suitable for heavy duty operation.
Further, the reel drum area (6) also includes a hydraulic motor that drives the reel drum (5a) through a gear box and a dual chain sprocket arrangement (7).
Furthermore, the reel drum area (6) also accommodates a measuring head assembly (9). The measuring head assembly (9) provides measurements on the wireline like the length of the wireline unwound from or wound on the reel drum (5a), tension or load on the wireline and the speed with which the wireline is unwound from or wound on the reel drum (5a). Said measuring head assembly (9) comprises of tension measuring devices and length/speed measuring devices. The tension measuring devices further include: 1) a hydraulic load cell, and 2) an electronic tension load pin. Both tension measuring devices (i.e., hydraulic load cell and electronic tension load pin) measure tension on the wireline and they both measure tension up to 9000 pounds or 4082 kg individually. Also, the hydraulic load cell and the electronic tension load pin work completely independent of each-other. Further, length/speed measuring devices include: 1) an electronic encoder, and 2) a mechanical counter with right angle drive. Both the electronic encoder and the mechanical counter provide the length of the wireline unwound from or wound on the reel drum (5a) and the speed with which the wireline is unwound from or wound on the reel drum (5a). The electronic encoder and the mechanical counter provide length/speed measurements independently. Further, the wireline completely wraps around each wheel in the measuring head assembly (9) and optionally removed from the measuring head assembly (9) without making a cut at its head point. Measuring head pulleys are provided for different ranges of wire diameter i.e. 0.092” to 0.160”.
Further, the reel drum area (6) has an automatic linear spooling arrangement (10) that is movable left and right to help ensure that the wireline is wound evenly on the reel drum (5a). The reel drum (5a) is typically spooled with 25000 ft. x 0.092”.
Now referring to Fig. 2, as already mentioned, the reel skid unit (4) includes an enclosed area i.e., an operator cabin (3) and a reel drum area (6). The reel drum area (6) holds either a single reel drum unit or a dual reel drum unit. The operator cabin (3) is fully air conditioned and it has a large window through which an engineer/operator gets a clear view of the reel drum area (6) and the field operation area. The operator cabin (3) includes a foldable sleeper and tool box cum bench (18), an operator chair (19) along with display and control panels (20) that enable the operator to view and control different parameters and measurements of operations.
The operator is able to obtain different parameters and measurements of operations from both power skid unit (2) and reel skid unit (4). These parameters and measurements include engine RPM, engine oil pressure, engine temperature, hydraulic pressure, etc. related to the engine (11) in the power skid unit (2) and speed of movement of the wireline, tension in the wireline etc. from the reel drum area (6).
Furthermore, the power skid unit (2) includes an engine (11), a main hydraulic pump (ride-on type) (12), a generator hydraulic pump (13), a hydraulic tank (14), an alternator (15), and a sliding door (21) that separates a walk way (22) from the power skid unit (2). The alternator (15) is provided to meet electricity requirements such as air conditioning, lighting etc. in both skid units. The alternator (15) is driven by the generator hydraulic pump (13) assembled on the main hydraulic pump (12). The main hydraulic pump (12) is coupled directly to a shaft of the engine (11) housed in the power skid unit (2). The engine (11) acts as a primary power source engine for driving the reel drum assembly (5).
The engine (11) in the power skid unit (2) is of 84 HP @2200 RPM, water cooled, naturally aspirated to power hydraulic drive to reel skid unit (4). The engine (11) is furnished with all Zone-2 rated components. Zone-2 areas are hazardous areas where explosive air gas mixture is not likely to occur in normal condition, but in cases explosive gas mixtures occurs, it only exists for a short time period. Zone- 2 rated engine has special kits comprising exhaust gas cooler, exhaust spark arrestor, exhaust flame trap, sealed crank case dip stick, automatic engine over speed shut down inlet valve, inlet flame trap, high coolant water temperature shut-down, nonmetallic blow fan, starter option- hydraulic/air/inertia manual etc.
The truck mounted modular wireline winch includes two different power sources: a) engine (11) provided in the power skid unit (2) for driving reel drum assembly (5) and various other winch operations, and b) engine (23) primarily utilized to drive the truck. The engine (11) acts as a primary or main power source to operate reel drum assembly (5) while the engine (23) is optionally used as an alternative secondary power source for operating the drum assembly (5).
The truck includes a power take-off (PTO) unit (24) located on a direct drive (26) from the vehicle engine (23). The PTO unit (24) enables the engine (23) to get connected to a driving mechanism attached to the reel drum assembly (5). The engine (23) acts as an optional power source engine for performing winch operations. The two position six-way switch is provided to select the power source engine (11 or 23) for wireline winch operations.
Particularly, two variable displacement hydraulic pumps (12, 25) are utilized. First hydraulic pump (12) is coupled directly to a shaft of the engine (11) housed in the power skid unit (2). Second hydraulic pump (25) is coupled to the power take-off (PTO) unit (24) on the direct drive (26) from the vehicle engine (23). The two position six-way switch selects the pressurized hydraulic oil coming either from the first hydraulic pump (12) or from the second hydraulic pump (25) to drive a hydraulic motor in the reel drum area (6).
Generally, the vehicle engine (23) is turbocharged through compression ignition, diesel operated and water cooled. Specification of the vehicle engine (23): Displacement - 6900 cc, maximum torque between 1200 to 1700 rpm, maximum output - 221 KW at 2400 rpm. As required, high pressure hydraulic hoses are used between the two skid modules by using quick release couplings.
Therefore, the present invention provides a truck mounted modular wireline winch utilizing an extra engine (11) for driving winch operations, vehicle engine (23) as an optional power source, automatic linear spooling arrangement (10), closed loop hydraulic circuit, measuring head assembly (9), and an operator cabin (3) that has a large window overlooking the reel drum area (6) and the field operation area.
The engine (11) in the power skid unit (2) also furnishes with all the Zone-2 rated components. By using two different power source engines (11, 23), greater flexibility is achieved in performing winch operations. Disclosed winch assembly is utilized for various slick lines such as but is not limited to 0.092”, 0.108”, 0.125”, 0.140” and 0.160” or braided lines and e-lines 3/16”, 7/32” operations.
Many modifications and other embodiments of the invention set forth herein will readily occur to one skilled in the art to which the invention pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principals of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.

CLAIMS

We claim:
1. A truck mounted modular wireline winch (100) comprising:
a lifting eye (1);
a modular skid unit;
an operator cabin (3);
a reel drum assembly (5);
a reel drum area (6);
a truck chassis (8);
an engine (11); and
a vehicle engine (23);
wherein:
said modular skids unit include a power skid unit (2) and a reel skid unit (4) mounted on said truck chassis (8) through said lifting eyes (1) provided at a top of each of the frame;
said power skid unit (2) comprises of an engine (11), a main hydraulic pump (12), a generator hydraulic pump (13), a hydraulic tank (14), an alternator (15), and a sliding door (21) that separates a walk way (22) from the power skid unit (2);
said reel skid unit (4) comprises of said operator cabin (3) and said reel drum area (6);
said reel drum area (6) comprises of a hydraulic motor that drives a reel drum (5a) through a gear box and a dual chain sprocket arrangement (7) along with a measuring head assembly (9) and an automatic linear spooling arrangement (10);
said measuring head assembly (9) comprises of a plurality of tension measuring device and length/speed measuring devices;
said engine (11) is a primary or main power source to operate reel drum assembly (5) while said vehicle engine (23) is utilised as an alternative secondary power source for operating said reel drum assembly (5) through two position six-way switch; and
said truck mounted modular wireline winch (100) includes a power take-off (PTO) unit (24), at least two variable displacement hydraulic pumps (12, 25) to drive a hydraulic motor in the reel drum area (6) and a two position six-way switch to select between said variable displacement hydraulic pumps (12, 25).
2. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said reel drum area (6) holds either a single reel drum or a dual reel drum made of steel for suitable heavy duty operations.
3. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said operator cabin (3) is fully air conditioned and has a plurality of large size window, a foldable sleeper, tool box cum bench (18), an operator chair (19) along with a display and a control panel (20).
4. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said reel drum (5a) is a spooled with 25000 ft. x 0.092.
5. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said measuring head assembly (9) comprises of said tension measuring devices which includes a hydraulic load cell and an electronic tension load pin to measure tension on said wireline of up to 9000 pounds or 8999 pounds independently.
6. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said measuring head assembly (9) comprises of said length/speed measuring devices which includes an electronic encoder and a mechanical counter with right angle drive to measure length and speed of said wireline is unwound from or wound on said reel drum (5a).
7. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said alternator (15) is provided to meet electricity requirements such as air conditioning, lighting etc. in both modular skids units and is driven by said generator hydraulic pump (13) assembled on said main hydraulic pump (12) which is coupled directly to a shaft of said engine (11) housed in said power skid unit (2).
8. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said variable displacement hydraulic pumps (12, 25) includes first hydraulic pump (12) which is coupled directly to a shaft of said engine (11) housed in said power skid unit (2) and a second hydraulic pump (25) is coupled to the power take-off (PTO) unit (24) on the direct drive (26) from said vehicle engine (23).
9. The truck mounted modular wireline winch (100) as claimed in claim 1, wherein said engine (11) is furnished with all Zone-2 rated components comprising exhaust gas cooler, exhaust spark arrestor, exhaust flame trap, sealed crank case dip stick, automatic engine over speed shut down inlet valve, inlet flame trap, high coolant water temperature shut-down, nonmetallic blow fan, starter option- hydraulic/air/inertia manual etc.