A vehicle-mounted electric well repair machine winch motor transmission device

Abstract

This utility model discloses a vehicle-mounted electric well-working rig winch motor transmission device, belonging to the technical field of well-working rig winch motors. It solves the problem of large space occupation in the transmission system of existing vehicle-mounted well-working rig winch motors. It includes a hollow shaft motor, with a drum-shaped gear coupling installed inside the hollow shaft. One end of the drum-shaped gear coupling is fixedly connected to one end of the hollow shaft, and the other end is fixedly connected to the winch input shaft. A connecting key for insertion into the winch input shaft is provided on the connection end of the drum-shaped gear coupling and the winch input shaft. This utility model, by incorporating a drum-shaped gear coupling within the hollow shaft motor, eliminates intermediate structures such as a gearbox and tensioning device, significantly reducing the size of the transmission device, meeting the space constraints of the vehicle-mounted platform, and eliminating redundant components such as the protective cover, thus reducing the failure rate and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of well workover winch technology, specifically to a vehicle-mounted electric well workover winch motor transmission device. Background Technology

[0002] In oil extraction operations, vehicle-mounted electric workover rigs have become important equipment for downhole operations due to their high mobility and flexible operation. However, the transmission systems of existing vehicle-mounted workover rig winch motors mostly adopt indirect transmission structures such as chains, gearboxes, or belts. Since indirect transmission structures require additional gearboxes, tensioning devices, and protective covers, the transmission system is bulky, which seriously conflicts with the compact space requirements of the vehicle-mounted platform. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a vehicle-mounted electric well workover rig winch motor transmission device, which solves the problem of large space occupation in the transmission system of existing vehicle-mounted well workover rig winch motors.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A vehicle-mounted electric well workover rig winch motor drive device is provided, including a hollow shaft motor. A drum-shaped gear coupling is installed inside the hollow shaft of the hollow shaft motor. One end of the drum-shaped gear coupling is fixedly connected to one end of the hollow shaft, and the other end of the drum-shaped gear coupling is fixedly connected to the winch input shaft. A connecting key for insertion into the winch input shaft is provided on the connection end of the drum-shaped gear coupling and the winch input shaft.

[0006] In this solution, the hollow shaft motor incorporates a drum-type gear coupling, eliminating intermediate structures such as a gearbox and tensioning device, significantly reducing the size of the transmission device, meeting the space constraints of the vehicle platform, and eliminating redundant components such as the protective cover, thus reducing the failure rate and maintenance costs.

[0007] Furthermore, the drum-type gear coupling includes a first transmission component, a second transmission component, and a third transmission component connected in sequence. The outer end of the first transmission component is a flange end fixedly connected to the hollow shaft, and a first drum-shaped internal tooth is provided on the inner ring surface of the first transmission component. A first drum-shaped external tooth that meshes with the first drum-shaped internal tooth is provided on the outer ring surface of one end of the second transmission component, and a second drum-shaped external tooth is provided on the outer ring surface of one end of the second transmission component. A second drum-shaped internal tooth that meshes with the second drum-shaped external tooth is provided on the inner ring surface of one end of the third transmission component, and a connecting key is fixed on the other end of the third transmission component. The drum-type gear coupling has a three-piece modular structure, which facilitates disassembly and maintenance.

[0008] Furthermore, multiple first bolts connected to the hollow shaft are provided on the outer end face of the flange of the first transmission component. The multiple first bolts provide a uniformly distributed axial preload, ensuring that there is no relative torsion between the flange end and the motor shaft under high torque conditions, and avoiding keyway shear failure.

[0009] Furthermore, both the flange end of the first transmission component and the outer ring surface of the hollow shaft are provided with semi-keyways, and the two semi-keyways are respectively used to accommodate the two ends of the end face key. The end face key undertakes the main torque transmission.

[0010] Furthermore, a second bolt is provided on the outer end face of the flange end of the first transmission component, and the second bolt passes through the flange end and the end face for a keyed thread connection. The second bolt applies additional preload to suppress vibration and loosening.

[0011] Furthermore, the third transmission component has an opening at its outer end, a connecting key is fixed inside the opening of the third transmission component, and a shaft head pressure plate that is fixedly connected to the winch input shaft is provided inside the opening of the third transmission component.

[0012] Furthermore, the shaft end pressure plate has multiple third bolts arranged in a ring for threaded connection with the winch input shaft. The pressure plate axially locks the winch input shaft within the drum-type gear coupling, preventing the shaft end from coming off during operation.

[0013] Furthermore, a first sealing plate is provided on the flange end face of the first transmission component, and a second sealing plate is provided on the free end of the hollow shaft. The first and second sealing plates achieve a seal on the hollow shaft, physically preventing external sand, dust, and mud from entering the transmission cavity, which is especially suitable for the high-dust environment of oil fields.

[0014] Furthermore, O-ring seals are provided between the inner ring surface of the first transmission component and the inner ring surface of the hollow shaft, as well as between the end face of the second sealing plate and the end face of the hollow shaft.

[0015] Furthermore, both the first sealing plate and the third transmission component are equipped with grease fittings for injecting oil into the second transmission component. The O-ring seal and the grease fittings block the lubricating oil leakage path, ensuring that the drum gear operates under oil bath lubrication for extended periods.

[0016] This utility model discloses a vehicle-mounted electric well workover rig winch motor drive device, the beneficial effects of which are:

[0017] 1. This utility model directly connects to the winch drive through the cooperation of a hollow shaft motor and a drum-type gear coupling, eliminating the multi-stage transmission components in traditional transmission methods, such as pulleys, chains, multi-stage gears and their supporting devices, greatly simplifying the transmission structure. Compared with traditional transmission methods, the overall axial dimension can be reduced by 30% to 50%, and the radial dimension is also significantly reduced, making full use of the limited space of the vehicle platform and improving the vehicle's space utilization and versatility.

[0018] 2. This utility model has good sealing performance. The hollow shaft is sealed by the setting of the first sealing plate and the second sealing plate, which physically isolates external sand, dust and mud from entering the transmission cavity. In addition, the cooperation of the O-ring seal gasket and the oil injection nozzle blocks the leakage path of lubricating oil, ensuring that the drum gear works for a long time under oil bath lubrication.

[0019] 3. This utility model overcomes the contradiction between the "high torque requirement" and "space limit constraint" of vehicle-mounted electric well workover rigs by combining a hollow shaft motor and a drum-type gear coupling. It combines high efficiency and energy saving, low maintenance cost and high reliability, providing key technical support for the electrification upgrade of oilfield equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the drive unit for the winch motor of a vehicle-mounted electric well workover rig.

[0021] The components are: 1. Hollow shaft motor; 2. Hollow shaft; 3. End face key; 4. Second bolt; 5. First transmission component; 6. First sealing plate; 7. Fourth bolt; 8. First bolt; 9. O-ring seal; 10. Second transmission component; 11. Third transmission component; 12. Connecting key; 13. Shaft head pressure plate; 14. Third bolt; 15. Oil injection nozzle; 16. Second sealing plate. Detailed Implementation

[0022] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0023] This embodiment provides a vehicle-mounted electric well workover rig winch motor drive device to solve the problem of large space occupation in the existing vehicle-mounted well workover rig winch motor drive system. It is shown below.

[0024] refer to Figure 1 A vehicle-mounted electric well workover rig winch motor transmission device includes a hollow shaft motor 1, which is a high power density motor, and a drum-type gear coupling is provided inside the hollow shaft 2 of the hollow shaft motor 1.

[0025] One end of the drum-shaped gear coupling is fixedly connected to one end of the hollow shaft 2, and the other end of the drum-shaped gear coupling is fixedly connected to the winch input shaft. A connecting key 12 for insertion into the winch input shaft is provided on the connection end of the drum-shaped gear coupling and the winch input shaft. Preferably, the connecting key 12 is a flat key.

[0026] Specifically, the drum-type gear coupling includes a first transmission component 5, a second transmission component 10, and a third transmission component 11, all connected in sequence and each being a hollow cylinder. The drum-type gear coupling has a three-part modular structure, which facilitates disassembly and maintenance.

[0027] The first transmission component 5 is cylindrical, with its outer end being a flange fixedly connected to the hollow shaft 2, and its other end having a first drum-shaped internal tooth on its inner ring surface.

[0028] In this embodiment, multiple first bolts 8 connected to the hollow shaft 2 are provided on the outer end face of the flange end of the first transmission component 5. These multiple first bolts 8 provide a uniformly distributed axial preload, ensuring no relative torsion between the flange end and the motor shaft under high torque conditions, thus preventing keyway shear failure. Furthermore, to facilitate torque transmission, both the flange end of the first transmission component 5 and the outer ring surface of the hollow shaft 2 are provided with semi-keyways. The two semi-keyways are respectively used to accommodate the two ends of the end face key 3. A second bolt 4 is provided on the outer end face of the flange end of the first transmission component 5, threaded through the flange end and the end face key 3. The end face key 3 bears the main torque transmission, and the second bolt 4 applies additional preload to suppress vibration and loosening.

[0029] The outer ring surface of one end of the second transmission component 10 is provided with a first drum-shaped external tooth that meshes with the first drum-shaped internal tooth, and the outer ring surface of one end of the second transmission component 10 is provided with a second drum-shaped external tooth.

[0030] The inner ring surface of one end of the third transmission component 11 is provided with a second drum-shaped internal tooth that meshes with the second drum-shaped external tooth, and the connecting key 12 is fixed to the other end of the third transmission component 11. The outer end of the third transmission component 11 is open, and the connecting key 12 is fixed inside the opening of the third transmission component 11. A shaft head pressure plate 13, which is fixedly connected to the winch input shaft, is provided inside the opening end of the third transmission component 11. Multiple third bolts 14 for threaded connection with the winch input shaft are distributed in a ring on the shaft head pressure plate 13. The pressure plate axially locks the winch input shaft in the drum-shaped gear coupling to prevent the shaft head from coming off during operation.

[0031] To achieve a seal, a first sealing plate 6 is provided on the flange end face of the first transmission component 5, and a second sealing plate 16 is provided on the free end of the hollow shaft 2. Both the first sealing plate 6 and the second sealing plate 16 are threadedly connected to the first transmission component 5 and the hollow shaft 2 respectively by multiple fourth bolts 7. The arrangement of the first sealing plate 6 and the second sealing plate 16 achieves a seal for the hollow shaft 2, physically preventing external sand, dust, and mud from entering the transmission cavity, which is especially suitable for the high dust environment of oil fields.

[0032] In this implementation, the first bolt 8, the second bolt 4, the third bolt 14, and the fourth bolt 7 are M16×80, M10×45, M16×45, and M12×45, respectively.

[0033] To ensure long-term operation of the drum-shaped gear under oil bath lubrication, O-ring gaskets 9 are provided between the inner ring surface of the first transmission component 5 and the inner ring surface of the hollow shaft 2, and between the end face of the second sealing plate 16 and the end face of the hollow shaft 2. Oil nozzles 15 for injecting oil into the second transmission component 10 are provided on both the first sealing plate 6 and the third transmission component 11. The cooperation of the O-ring gaskets 9 and the oil nozzles 15 blocks the leakage path of lubricating oil.

[0034] The transmission principle of this scheme is as follows:

[0035] The output torque of the hollow shaft motor 1 is transmitted to the first transmission component 5 through the end face key 3. The torque received by the first transmission component 5 is transmitted to the second transmission component 10 through the engagement of the first drum-shaped internal teeth and the first drum-shaped external teeth. The second transmission component 10 then transmits the torque to the third transmission component 11 through the engagement of the second drum-shaped external teeth and the second drum-shaped internal teeth. The third transmission component 11 transmits the torque to the input shaft of the winch through the connecting key 12.

[0036] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A vehicle-mounted electric well workover rig winch motor drive device, characterized in that, The device includes a hollow shaft motor (1), in which a drum-shaped gear coupling is provided inside the hollow shaft (2) of the hollow shaft motor (1). One end of the drum-shaped gear coupling is fixedly connected to one end of the hollow shaft (2), and the other end of the drum-shaped gear coupling is fixedly connected to the winch input shaft. A connecting key (12) for inserting into the winch input shaft is provided on the connection end of the drum-shaped gear coupling and the winch input shaft.

2. The transmission device according to claim 1, characterized in that, The drum-type gear coupling includes a first transmission component (5), a second transmission component (10), and a third transmission component (11) connected in sequence. The outer end of the first transmission component (5) is a flange end that is fixedly connected to the hollow shaft (2), and the inner ring surface of the first transmission component (5) is provided with a first drum-shaped internal tooth; The outer ring surface of one end of the second transmission member (10) is provided with a first drum-shaped external tooth that meshes with the first drum-shaped internal tooth, and the outer ring surface of one end of the second transmission member (10) is provided with a second drum-shaped external tooth; The inner ring surface of one end of the third transmission component (11) is provided with a second drum-shaped inner tooth that meshes with the second drum-shaped outer tooth, and the connecting key (12) is fixed on the other end of the third transmission component (11).

3. The transmission device according to claim 2, characterized in that, The outer end face of the flange of the first transmission component (5) is provided with a number of first bolts (8) that are connected to the hollow shaft (2).

4. The transmission device according to claim 2, characterized in that, The flange end of the first transmission component (5) and the outer ring surface of the hollow shaft (2) are both provided with semi-keyways, and the two semi-keyways are respectively used to accommodate the two ends of the end face key (3).

5. The transmission device according to claim 4, characterized in that, The outer end face of the flange end of the first transmission component (5) is provided with a second bolt (4), which passes through the flange end and the end face key (3) for threaded connection.

6. The transmission device according to claim 2, characterized in that, The third transmission component (11) has an opening at its outer end, the connecting key (12) is fixed inside the opening of the third transmission component (11), and a shaft head pressure plate (13) is provided inside the opening end of the third transmission component (11) and is fixedly connected to the winch input shaft.

7. The transmission device according to claim 6, characterized in that, The shaft head pressure plate (13) has multiple third bolts (14) arranged in a ring for threaded connection with the winch input shaft.

8. The transmission device according to claim 2, characterized in that, A first sealing plate (6) is provided on the flange end face of the first transmission component (5), and a second sealing plate (16) is provided on the free end of the hollow shaft (2).

9. The transmission device according to claim 2, characterized in that, O-rings (9) are provided between the inner ring surface of the first transmission component (5) and the inner ring surface of the hollow shaft (2), and between the end face of the second sealing plate (16) and the end face of the hollow shaft (2).

10. The transmission device according to claim 8, characterized in that, Both the first sealing plate (6) and the third transmission component (11) are provided with oil injection nozzles (15) for injecting oil into the second transmission component (10).

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