Walking beam pumping unit horsehead shift and swing device

Abstract

The utility model discloses a beam pumping unit horse head shift swing device, it includes drive arrangement, and the output of drive arrangement with controller and power cable is equipped with the drive shaft that is connected with the worm section of being equipped with, and the drive shaft is fixed on the beam through drive shaft seat and axle seat support frame, the lower end of guide shaft is inserted in horse head pin shaft top and upper end is equipped with the worm wheel of fixing horse head fixing frame, and horse head fixing frame is fixedly connected with horse head and worm wheel, and worm wheel is engaged with the worm section in drive shaft. The device is suitable for the well repair operation, pumping rod replacement and other working conditions of horse head position adjustment construction under the condition of oilfield field construction, when the horse head pin shaft of pumping unit is corroded and leads to swing difficulty, and its application range is wide. The operation efficiency of horse head shift swing is improved, the operation cost is reduced, the personal safety of operator is guaranteed, and the labor intensity of staff is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of maintenance tools for walking beam pumping units, specifically a donkey head shifting and swinging device for walking beam pumping units. Background Technology

[0002] The walking beam pumping unit is a core piece of equipment in oilfield production operations. Its head is rigidly connected to the walking beam via a pin. During long-term field operation, moisture and sediment can seep into the clearance between the pin and the bearing, causing corrosion and jamming on the metal surface. This significantly increases the resistance to the head's movement, rendering some pumping units' head-swinging modules essentially ineffective, making it difficult or impossible for the head to swing. Previously, a traction rope was typically attached to the head, and the pumping unit was manually or electrically pulled to allow it to move freely for well work. However, this method involves numerous safety violations and has a low success rate. Currently, most well workover operations use a method of hoisting the head and walking beam to allow for work. This method imposes a significant workload on the construction unit, and improper hoisting can damage pumping unit components and create safety hazards.

[0003] Currently, the method of adjusting the angle of the donkey head by swinging it to one side of the traveling beam in well repair and other construction operations has the following unavoidable problems: high cost and low efficiency: In wells where it is impossible to swing the donkey head, hoisting the donkey head and traveling beam requires one crane, one aerial work platform, and a team of 3-5 operators. A single adjustment takes 3-5 hours from issuing the work order to completion, resulting in high cost and low efficiency; it also increases the time spent working at height and requires hoisting operations, which still poses safety risks.

[0004] This increases the risk of equipment damage: the construction of the walking beam requires the removal of the walking beam central shaft cover plate, and then the lifting equipment lifts the walking beam and moves the donkey head backward as a whole, and the lower end of the donkey head is stuck on the upper part of the pumping unit support. During the lifting process, it is easy to cause damage due to uneven force on the connecting rod and the walking beam connecting shaft. If it is not detected in time, it may even lead to a rollover accident in serious cases.

[0005] There are also some problems in the existing related patent technologies. For example, the donkey head swing device of the oil pumping unit disclosed in patent application number CN201921324753.2 is powered by a motor installed on the upper part of the walking beam, which drives the push rod swing rod, the intermediate rotating shaft seat and the crank rod to push the four-pin donkey head to tip over.

[0006] The shortcomings of the above invention are that it can only be applied to the four-pin type donkey head, and its power mechanism and swing mechanism are both installed on the upper part of the walking beam, which makes it heavy and inconvenient to install and use.

[0007] Patent application CN201911018136.4 discloses a donkey head tilting mechanism for a beam-type oil pumping unit, comprising a bottom support, a lifting support (slidably connected to the bottom support and driven to lift by a lifting mechanism), a first / second fixed shaft (distributed vertically on the lifting support for the walking beam to pass through), and a tilting mechanism (including a tilting support, a positioning component, and a tilting drive mechanism); the tilting support slides along the axis of the fixed shaft, the tilting drive mechanism is connected to the swing arm, and the swing arm docks with the donkey head to achieve tilting.

[0008] However, the aforementioned inventions are complex in structure and large in size, and their swing devices take a long time to install and pose safety risks.

[0009] The auxiliary device for maintenance of the donkey head of the oil pumping unit with patent application number CN201320691631.3 includes a walking beam (connected to the front donkey head at the front end, the main frame in the middle, and the counterweight at the rear end), a drive system (motor → gearbox → connecting rod, driving the walking beam to swing), and a hydraulic auxiliary mechanism (a hydraulic station is set in the middle of the walking beam, which is connected to a hydraulic pump through a hydraulic pipe. The hydraulic pump drives the locking body and the locking tongue to extend and retract, and the locking tongue cooperates with the locking groove of the donkey head).

[0010] However, the above invention can only adjust the donkey head lock pin and does not have the function of swinging the donkey head.

[0011] Therefore, there is an urgent need for a donkey head shifting and swinging device that is simple in structure, easy to operate, and adaptable to field conditions, in order to solve the above-mentioned technical defects. Summary of the Invention

[0012] The purpose of this utility model is to provide a donkey head shifting and swinging device for a beam pumping unit, which has a simple structure, is easy to operate and can adapt to field working conditions, improves the working efficiency of donkey head shifting and swinging, reduces operating costs, ensures the personal safety of operators, and reduces the labor intensity of employees.

[0013] To achieve the above objectives, the technical solution of this utility model is: a walking beam pumping unit donkey head shifting and swinging device, including a drive device, wherein: the output end of the drive device, equipped with a controller and a power cable, is connected to a drive shaft with a worm gear section; the drive shaft is fixed on the walking beam through a drive shaft seat and a shaft seat support frame; the lower end of the guide shaft is inserted into the donkey head pin and the upper end is equipped with a worm wheel that fixes the donkey head fixing frame; the donkey head fixing frame is fixedly connected to the donkey head and the worm wheel, and the worm wheel meshes with the worm gear section in the drive shaft.

[0014] Preferably, the driving device is an electric wrench with an emergency stop function or an electric wrench with a remote control function; when using an electric wrench with an emergency stop function, the power cable is a waterproof cable with a length of more than 12 meters.

[0015] Preferably, the driving device is a hydraulic wrench equipped with a hydraulic pump station and a manual hydraulic valve, and the power cable is a high-pressure hose with a length of more than 12 meters; the manual hydraulic valve is equipped with a flow adjustment knob and the speed of the hydraulic wrench can be controlled between 0-5 r / min.

[0016] Preferably, the drive shaft is a non-uniform diameter rod-shaped body, with a worm gear section located in the middle of the drive shaft. The two ends of the worm gear section are respectively provided with a limiting step and a power connection end. The power connection end is a polygonal body that can be inserted into the output end of the drive device. The outer diameter of the limiting step is larger than the inner diameter of the mounting hole in the drive shaft seat.

[0017] Preferably, the drive shaft seat is an L-shaped block with two mounting holes on the upper part of the vertical block for inserting the drive shaft. The two drive shaft seats are fixed back-to-back on both sides of the shaft seat support frame. The drive shaft seats and the shaft seat support frame are connected by bolts or welding.

[0018] Preferably, the width of the shaft support frame is greater than the width of the walking beam, and bolt holes are provided in the frame plates on both sides of the lower part; the shaft support frame can be clamped on both sides of the walking beam and can be fixed to the outside of the walking beam by the support frame fixing bolts.

[0019] Preferably, an adjusting partition is provided in the middle of the frame plate of the bearing support frame. The adjusting partition is a horizontal plate with a bolt through hole in the middle of the plate, in which an adjusting bolt can be installed. The installation height between the bearing support frame and the walking beam can be adjusted by the adjusting bolt.

[0020] Preferably, the donkey head fixing frame consists of two upright plates with donkey head fixing bolts and a base plate with guide shaft mounting holes. The guide shaft mounting holes in the base plate can be inserted into the guide shaft, and the width of the frame formed by the two upright plates is smaller than the width of the groove of the donkey head. The donkey head fixing bolts can fix the donkey head fixing frame in the groove of the donkey head.

[0021] Preferably, the base plate of the donkey head fixing frame is fixedly connected to the worm gear by welding or bolts.

[0022] Preferably, the guide shaft is a non-uniform diameter cylindrical body, the lower inner circle of the guide shaft is larger than the upper inner circle and can be inserted into the donkey head pin, and the upper outer circle of the guide shaft is provided with a worm gear sitting step, on which the worm gear can sit.

[0023] Compared with the prior art, this utility model has the following significant advantages: This device is suitable for adjusting the position of the sucker head in oilfield field operations, such as well repair operations and sucker rod replacement when the sucker head pin is corroded and has difficulty swinging. It has a wide range of applications.

[0024] The drive shaft is equipped with a worm gear and worm wheel transmission mechanism. The drive device can replace the traditional manual pulling and pushing. The torque is amplified by the reduction ratio of the worm gear, which can easily overcome the resistance of the rusted donkey head pin. The transmission is smooth and can prevent the donkey head from suddenly swinging.

[0025] By using a guide shaft for positioning and connection, and through the clearance fit between the guide shaft and the donkey head pin, the worm gear and worm section can be quickly and coaxially positioned, reducing the installation time from 180 minutes in traditional construction devices to 25 minutes, thus significantly improving installation efficiency.

[0026] Remote control ensures safe construction: This device increases the safe operating distance. Traditionally, operators need to be within 1-2 meters of the donkey head. Using a power cable of 12 meters or more and a controller with an emergency stop function, or a drive unit with remote control capabilities, operators no longer need to be in close proximity to the donkey head. This device allows operators to work within a safe area of ​​10-15 meters, achieving safe isolation between personnel and the donkey head, completely eliminating the safety hazard caused by sudden tipping over, and significantly improving its safety protection level.

[0027] This device achieves versatility and adaptability to various operating environments for its shifting and swinging head: traditional adjustment devices are only compatible with a single type of beam pumping unit, while this device is compatible with all domestic models. The installation height of this device can be adjusted via adjusting bolts, making it compatible with domestic Type 10, Type 12, and Type 14 beam pumping units without the need for customization. This significantly improves ease of use while reducing manufacturing costs.

[0028] The number of operators has been greatly reduced: the traditional operation method requires 5 operators to complete the operation, while this device only requires 2 people to complete the operation, reducing the number of operators by 60%. This utility model has undergone 100 field tests without any safety accidents, completely solving the safety hazards of traditional operations, significantly reducing construction costs and the labor intensity of employees. Its use effect is significant and it has promotion and application value. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view and a working state diagram of the present invention.

[0030] Figure 2 yes Figure 1 Left view of the structural schematic diagram of this utility model.

[0031] Figure 3 yes Figure 1 and Figure 2 A schematic diagram of the drive shaft.

[0032] Figure 4 From left to right, the middle section consists of: Figure 1 and Figure 2 The front view, left view, and structural schematic diagram of the adjusting partition of the central axis support frame.

[0033] Figure 5 yes Figure 1 Front and top views of the schematic diagram of the donkey head fixing frame structure.

[0034] In the diagram: 1. Donkey head fixing frame; 2. Donkey head fixing bolt; 3. Drive shaft; 31. Worm gear section; 32. Limiting step; 33. Power connection end; 4. Worm wheel; 5. Shaft support frame; 51. Adjusting partition; 6. Drive shaft seat; 7. Guide shaft; 8. Adjusting bolt; 9. Support frame fixing bolt; 10. Controller; 11. Drive device; 12. Power cable; 13. Donkey head pin; 14. Donkey head; 15. Walking beam. Detailed Implementation

[0035] The accompanying drawings are for reference and illustration only and are not intended to limit the scope of protection of this utility model. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] See Figures 1-5The walking beam pumping unit's donkey head shifting and swinging device includes a drive unit 11, wherein: the output end of the drive unit 11, equipped with a controller 10 and a power cable 12, is connected to a drive shaft 3 with a worm gear section 31; the drive shaft 3 is fixed to the walking beam 15 via a drive shaft seat 6 and a shaft seat support frame 5; the lower end of the guide shaft 7 is inserted into the donkey head pin 13 and the upper end is equipped with a worm wheel 4 that fixes the donkey head fixing frame 1; the donkey head fixing frame 1 is fixedly connected to the donkey head 14 and the worm wheel 4, and the worm wheel 4 meshes with the worm gear section 31 in the drive shaft 3.

[0039] In this invention, the drive unit 11 is equipped with a controller 10 and a power cable 12. The operator can control the drive unit 11 from the ground via the controller 10, causing the drive unit 11 to drive the drive shaft 3 to rotate. Since the drive shaft 3 is fixed to the walking beam 15 via the drive shaft seat 6 and the seat support frame 5, and the worm section 31 in the drive shaft 3 meshes with the worm wheel 4; and the worm wheel 4 is fixed to the donkey head 14 via the donkey head fixing frame 1, as long as the drive shaft 3 rotates, it can drive the worm wheel 4 to rotate and push the donkey head 14 to one side of the walking beam 15 through the donkey head fixing frame 1 fixed to the worm wheel 4, thus making room for wellhead operations and other construction work.

[0040] This utility model has a simple structure. Through the controller 10, operators can control the drive device 11 from a position away from the donkey head 14, ensuring safety and convenience. It provides protection for the personal safety of operators and significantly reduces the labor intensity of workers. There is no need to use hoisting equipment or aerial work platforms for the displacement of the donkey head 14, thus reducing the number of operators and significantly lowering maintenance and labor costs while ensuring safe production.

[0041] This invention is easy to operate and fully adaptable to field conditions. It solves the problem of the swing head module failing to function in current beam pumping units, resulting in difficulty or inability to swing the head. It improves the efficiency of head movement and swing, and significantly reduces operating costs. Furthermore, this simple invention is inexpensive and reusable, demonstrating significant effectiveness and application value.

[0042] Based on the above embodiment one, this utility model also has the following embodiments: A preferred embodiment: the drive device 11 is an electric wrench with an emergency stop function or an electric wrench with a remote control function; when using an electric wrench with an emergency stop function, the power cable 12 is a waterproof cable with a length of 12 meters or more. The control distance of the emergency stop function of the controller 10 is more than 12 meters. This type of electric wrench and the electric wrench with a remote control function are existing technologies and can be purchased from the market or customized from a manufacturer. The electric wrench with a remote control function can be equipped with a wireless module, and the controller 10 includes forward / reverse / emergency stop / vibration button modes.

[0043] In a preferred embodiment, the drive device 11 is a hydraulic wrench equipped with a hydraulic pump station and a manual hydraulic valve, and the power cable 12 is a high-pressure hose with a length of 12 meters or more. The manual hydraulic valve is equipped with a flow adjustment knob, and the rotation speed of the hydraulic wrench can be controlled between 0-5 r / min. This type of hydraulic wrench is existing technology and can be purchased from the market or customized from a manufacturer. When using the hydraulic wrench, the manual hydraulic valve acts as the controller 10. Its hydraulic pump station is lightweight, easy to carry, and suitable for remote oilfield areas without power grids. The high-pressure hose used as the power cable 12 is oil-resistant and can still function normally in crude oil spill scenarios.

[0044] In a preferred embodiment: the drive shaft 3 is a non-uniform diameter rod-shaped body, the worm segment 31 is disposed in the middle of the drive shaft 3, and the two ends of the worm segment 31 are respectively provided with a limiting step 32 and a power connection end 33. The power connection end 33 is a polygonal body that can be inserted into the output end of the drive device 11; the outer diameter of the limiting step 32 is larger than the inner diameter of the mounting hole in the drive shaft seat 6.

[0045] In a preferred embodiment: the drive shaft seat 6 is an L-shaped block, with two of them and mounting holes for inserting the drive shaft 3 on the upper part of the vertical block. The two drive shaft seats 6 are fixed back to back on both sides of the shaft seat support frame 5. The drive shaft seat 6 and the shaft seat support frame 5 are connected by bolts or welding.

[0046] A preferred embodiment: see Figure 4 The width of the shaft support frame 5 is greater than the width of the walking beam 15, and bolt holes are provided in the frame plates on both sides of the lower part; the shaft support frame 5 can be locked onto both sides of the walking beam 15 and can be fixed to the outside of the walking beam 15 by the support frame fixing bolts 9. The drive shaft 3 is supported by the drive shaft seat 6 fixed together with the shaft support frame 5.

[0047] In a preferred embodiment, an adjusting partition 51 is further provided in the middle of the frame plate of the shaft support frame 5. The adjusting partition 51 is a horizontal plate with a bolt through hole in the middle of the plate, into which an adjusting bolt 8 can be installed. The installation height between the shaft support frame 5 and the walking beam 15 can be adjusted by the adjusting bolt 8. The installation height of the drive shaft 3 on the walking beam 15 is determined by the adjusting bolt 8, thus enabling this device to be applied to various models of walking beam pumping units. The height adjustment achieved by the adjusting bolt 8 is compatible with domestic Type 10, Type 12, and Type 14 walking beam pumping units without customization, making this utility model a universal device for the movement and swing of the walking beam pumping unit's head, further reducing the processing and manufacturing costs of this utility model, while also making it more convenient to use.

[0048] A preferred embodiment: see Figure 5The donkey head fixing frame 1 consists of two upright plates with donkey head fixing bolts 2 and a base plate with guide shaft mounting holes. The guide shaft mounting holes in the base plate can be inserted into the guide shaft 7, and the width of the frame formed by the two upright plates is smaller than the width of the groove of the donkey head 14. The donkey head fixing frame 1 can be fixed in the groove of the donkey head 14 by the donkey head fixing bolts 2.

[0049] In a preferred embodiment, the base plate of the donkey head fixing frame 1 is fixedly connected to the worm gear 4 by welding or bolts.

[0050] In a preferred embodiment: the guide shaft 7 is a non-uniform diameter cylindrical body. The lower inner circle of the guide shaft 7 is larger than the upper inner circle and can be inserted into the donkey head pin 13. The upper outer circle of the guide shaft 7 is provided with a worm gear sitting step, on which the worm gear 4 can sit. The guide shaft 7 serves as a positioning and load-bearing connecting component of this device.

[0051] To avoid obstructing the wellhead operating space, this device can be used in various scenarios including but not limited to the following: Oilfield well workover operations: During wellhead equipment maintenance and workover operations, the donkey head 14 is flipped to the "avoidance position"; Sucker rod replacement: When the sucker rod breaks off or wears, the donkey head 14 is flipped to the "avoidance position" to facilitate the lifting and installation of the sucker rod; Pin maintenance: Before cleaning the donkey head pin 13 due to rust and replenishing grease, this device can be used to assist the donkey head 14 in swinging at a small angle or amplitude to loosen the fit clearance between it and the donkey head pin 13; Emergency adjustment: If the donkey head 14 becomes stuck due to load fluctuations, the vibration mode of this device can be used to loosen the donkey head pin 13 and achieve emergency reset.

[0052] The usage and working principle of this device: Positioning installation: Insert the guide shaft 7 into the upper part of the donkey head pin 13 to achieve coaxial positioning between the device and the donkey head pin 13; fix the donkey head fixing bracket 1, which is fixed together with the worm gear 4, into the groove on the side of the donkey head 14 using the donkey head fixing bolt 2, and ensure that the worm gear 4 has no radial movement; Meshing adjustment: Tighten the shaft support bracket 5, which fixes the drive shaft seat 6, to the outside of the walking beam 15 using the support bracket fixing bolt 9; rotate the adjusting bolt 8 to finely adjust the height of the drive shaft seat 6, so that the worm section 31 in the drive shaft 3 meshes with the transmission teeth of the worm gear 4; tighten the support bracket fixing bolt 9 to lock the position; if using an electric wrench Hand as drive device 11: Connect the output end of the electric wrench to the power connection end 33, and the operator holds the controller 10 and retreats to a safe area of ​​10-15m to start the electric wrench; Swing donkey head 14: The power connection end 33 drives the drive shaft 3 to rotate, which drives the worm wheel 4 and donkey head 14 to swing slowly through the worm section 31; Vibration loosening: If the donkey head pin 13 is rusted and stuck, turn on the "vibration mode" of the controller 10, and repeatedly impact to break the rust layer until the donkey head pin 13 is loosened; Reset operation: After the adjustment is completed, start the drive shaft 3 in reverse, drive the worm section 31 to reverse, drive the donkey head 14 to reset, disassemble the device and perform maintenance.

[0053] If a hydraulic wrench is used as the drive device 11, it is suitable for use in remote areas without power grids. The method of use is as follows: Use the manual hydraulic valve with the flow adjustment knob as the controller 10. Connect the output end of the hydraulic wrench to the power connection end 33. The operator holds the manual hydraulic valve and retreats to a safe area of ​​10-15m, and starts the hydraulic wrench. The operator controls the hydraulic pump station to supply oil through the manual hydraulic valve, and turns the valve stem to make the hydraulic wrench drive the drive shaft 3 and worm gear 4 to rotate, and swing and move the donkey head 14. Vibration mode: By quickly switching the "oil supply / oil return" state of the valve stem, the hydraulic wrench can output intermittent torque to deal with the rusted donkey head pin 13. Reset operation: After the adjustment is completed, start the drive shaft 3 in reverse to drive the donkey head 14 to reset, disassemble the device and perform maintenance.

[0054] Because the hydraulic lines and the high-pressure hoses used as power cables 12 are oil-resistant, they can still function normally in the event of an oil spill.

[0055] The embodiments described above are merely typical examples, but the present invention is not limited to these embodiments. Those skilled in the art can make modifications without departing from the spirit and teachings of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the inventive spirit and concept of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope is not limited to the above description.

Claims

1. A beam pumping unit head shifting and swinging device, including a drive unit, characterized in that, The output end of the drive unit, equipped with a controller and power cable, is connected to the drive shaft with a worm gear section; the drive shaft is fixed to the walking beam via a drive shaft seat and a seat support frame; the lower end of the guide shaft is inserted into the donkey head pin and the upper end is equipped with a worm wheel with a donkey head fixing frame; the donkey head fixing frame is fixedly connected to the donkey head and the worm wheel, and the worm wheel meshes with the worm gear section in the drive shaft; the drive unit is an electric wrench with an emergency stop function or an electric wrench with a remote control function.

2. The walking beam pumping unit donkey head shifting and swinging device as described in claim 1, characterized in that, When using an electric wrench with an emergency stop function, the power cable is a waterproof cable with a length of 12 meters or more.

3. The walking beam pumping unit donkey head shifting and swinging device as described in claim 1, characterized in that, The drive device is a hydraulic wrench equipped with a hydraulic pump station and a manual hydraulic valve. The power cable is a high-pressure hose with a length of more than 12 meters. The manual hydraulic valve is equipped with a flow adjustment knob and the speed of the hydraulic wrench can be controlled between 0-5 r / min.

4. The walking beam pumping unit donkey head shifting and swinging device as described in claim 2 or 3, characterized in that, The drive shaft is a non-uniform diameter rod-shaped body, with a worm gear section located in the middle of the drive shaft. The two ends of the worm gear section are respectively provided with a limiting step and a power connection end. The power connection end is a polygonal body that can be inserted into the output end of the drive device. The outer diameter of the limiting step is larger than the inner diameter of the mounting hole in the drive shaft seat.

5. The walking beam pumping unit donkey head shifting and swinging device as described in claim 4, characterized in that, The drive shaft seat is an L-shaped block with two seats and mounting holes for inserting the drive shaft on the upper part of the vertical block. The two drive shaft seats are fixed back to back on both sides of the shaft seat support frame. The drive shaft seats and the shaft seat support frame are connected by bolts or welding.

6. The walking beam pumping unit donkey head shifting and swinging device as described in claim 5, characterized in that, The width of the bearing support frame is greater than the width of the walking beam, and bolt holes are provided in the frame plates on both sides of the lower part; the bearing support frame can be clamped on both sides of the walking beam and can be fixed to the outside of the walking beam by the support frame fixing bolts.

7. The walking beam pumping unit donkey head shifting and swinging device as described in claim 6, characterized in that, in The bearing support frame is also provided with an adjusting partition in the middle of the frame plate. The adjusting partition is a horizontal plate with a bolt through hole in the middle of the plate, in which an adjusting bolt can be installed. The installation height between the bearing support frame and the walking beam can be adjusted by the adjusting bolt.

8. The walking beam pumping unit donkey head shifting and swinging device as described in claim 4, characterized in that, The donkey head fixing frame consists of two upright plates with donkey head fixing bolts and a base plate with guide shaft mounting holes. The guide shaft mounting holes in the base plate can be inserted into the guide shaft, and the width of the frame formed by the two upright plates is smaller than the width of the groove of the donkey head. The donkey head fixing bolts can fix the donkey head fixing frame in the groove of the donkey head.

9. The walking beam pumping unit donkey head shifting and swinging device as described in claim 8, characterized in that, The base plate of the donkey head fixing frame is fixedly connected to the worm gear by welding or bolts.

10. The walking beam pumping unit donkey head shifting and swinging device as described in claim 9, characterized in that, The guide shaft is a non-uniform diameter cylindrical body. The lower inner circle of the guide shaft is larger than the upper inner circle and can be inserted into the donkey head pin. The upper outer circle of the guide shaft is provided with a worm gear sitting step, and the worm gear can sit on the worm gear sitting step.

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