Pumping unit crank pin shaft pulling-out device

Abstract

The utility model discloses a device for pulling out a crank pin shaft of an oil pumping unit. The device comprises a chassis, a driving piece and a magnetic attraction piece, a through hole is formed in the center of the base plate, and auxiliary holes are evenly distributed in the base plate in the circumferential direction. The driving part comprises a first air cylinder and a second air cylinder, the first air cylinder is installed in the center of the chassis, the output end of the first air cylinder penetrates through the through hole and extends downwards, the output end of the second air cylinder penetrates through the auxiliary hole and extends downwards, and the output end of the second air cylinder is used for abutting against the periphery of the pin shaft; the magnetic attraction piece is fixedly connected with the output end of the first air cylinder. Through the arrangement of the driving piece and the magnetic attraction piece, the pin shaft can rapidly fall off through continuous beating of the second air cylinder after being magnetically attracted, other steps are not needed, and the overall efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for oil equipment, and particularly relates to a pulling device for a crank pin shaft of a pumping unit. Background Art

[0002] During oil production operations in oil fields, the pumping unit is always in operation. Long-term continuous operation may cause damage to the crank pin. Therefore, generally, the damaged crank pin shaft is pulled out by manual knocking or tools, and then replaced to ensure the stable operation of the pumping unit. The utility model patent with the publication number CN2592342Y discloses and authorizes a pulling device for a crank pin of a pumping unit, which constructs a basic pulling structure by setting a hydraulic cylinder, a hydraulic pipeline, and a three-position four-way manual reversing valve; specifically, by using a hydraulic oil pump and operating the manual reversing valve, the pressure of the hydraulic oil tank enters the hydraulic cylinder through a filter to expand and contract, so as to achieve the purpose of pulling out the crank pin.

[0003] However, when the above-mentioned pulling device for the crank pin of the pumping unit is specifically used, it is necessary to hoist the pulling device, connect the quick-change joint to the main hydraulic power oil circuit through a hydraulic pipeline, and also perform multiple actions including but not limited to close fitting, operation, and closing. That is, the use steps of the pulling device are too cumbersome and the overall efficiency is low. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and provide a pulling device for a crank pin shaft of a pumping unit to solve the technical problem of low overall efficiency caused by more operation steps in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a pulling device for a crank pin shaft of a pumping unit, including a chassis, a driving member, and a magnetic attracting member; a through hole is opened in the center of the chassis, and auxiliary holes are evenly distributed along the circumferential direction of the chassis; the driving member includes a first cylinder and a second cylinder, the first cylinder is installed in the center of the chassis, the output end of the first cylinder passes through the through hole and extends downward, the output end of the second cylinder penetrates through the auxiliary hole and extends downward, and the output end of the second cylinder is used to abut against the periphery of the pin shaft; the magnetic attracting member is fixedly connected to the output end of the first cylinder.

[0007] In some embodiments, at least three auxiliary holes are opened, the second cylinder is fixedly installed directly above the auxiliary hole, and the second cylinder corresponds to the auxiliary hole one by one.

[0008] In some embodiments, a cushion block is fixedly connected to the output end of the second cylinder.

[0009] In some embodiments, the spacer block has a cuboid structure.

[0010] In some embodiments, a support frame is fixedly installed above the through hole. A round hole is formed in the center of the support frame. The first cylinder is fixedly installed on the support frame, and the output end of the first cylinder sequentially penetrates through the round hole and the through hole.

[0011] In some embodiments, both the first cylinder and the second cylinder are double-shaft cylinders.

[0012] In some embodiments, the magnetic member is a strong magnet.

[0013] In some embodiments, the magnetic member has a cuboid structure.

[0014] In some embodiments, lifting lugs are evenly distributed along the circumferential direction at the top edge of the chassis.

[0015] In some embodiments, a placement groove is formed along the circumferential direction at the top of the chassis.

[0016] Compared with the prior art, a pin pulling device for a pumping unit crankpin provided by the present utility model can strongly magnetize one end of the pin by setting the first cylinder and the magnetic member. Then, by making the output end of the second cylinder abut against the periphery of the pin or repeatedly knocking on the periphery of the pin, the pin can be quickly detached and taken out, without other usage steps, that is, the overall efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a pin pulling device for a pumping unit crankpin provided by an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 the left view of

[0019] Description of the reference numerals:

[0020] 100, chassis; 110, through hole; 120, auxiliary hole; 130, lifting lug; 140, placement groove; 200, driving member; 210, first cylinder; 220, second cylinder; 300, magnetic member; 400, spacer block; 500, support frame; 510, round hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present 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 only used to explain the present utility model, and are not used to limit the present utility model.

[0022] In order to solve the technical problem of low overall efficiency caused by a large number of operating steps, the utility model provides a pulling device for the crank pin shaft of a pumping unit, which can effectively improve the efficiency.

[0023] It should be noted that the pulling device for the crank pin shaft of a pumping unit described in the utility model is used for but not limited to petroleum equipment, etc. For the convenience of description, in the utility model, only an example of a pulling device for the crank pin shaft of a pumping unit applied to petroleum equipment is used for illustration, and the principle of a pulling device for the crank pin shaft of a pumping unit applied to other types of equipment is essentially the same as that applied to petroleum equipment, and will not be elaborated one by one here.

[0024] Please refer to Figure 1 - Figure 2 , Figure 1 FIG.

[0025] In this embodiment, by setting the first cylinder 210 and the magnetic attraction member 300, strong magnetic attraction can be applied to one end of the pin; then, by the output end of the second cylinder 220 abutting against the periphery of the pin shaft or repeatedly knocking on the periphery of the pin shaft, the pin shaft can be quickly detached and taken out, without other usage steps, that is, the overall efficiency is higher. It should be emphasized that if the pumping unit is at a high altitude, the chassis 100 can be hoisted; if the pumping unit can be located on the ground or at a lower position, the above-mentioned chassis 100 can be directly placed on the ground and fixed, and then the above steps can be implemented.

[0026] In one of the embodiments, please refer to Figure 1 FIG., at least three auxiliary holes 120 are provided, the second cylinder 220 is fixedly installed directly above the auxiliary holes 120, and the second cylinder 220 corresponds to the auxiliary holes 120 one by one.

[0027] In this embodiment, at least three auxiliary holes 120 are provided, so that the periphery of the pin shaft can be knocked more evenly and quickly, thereby accelerating the detachment of the pin shaft. It should be noted that the output end of the second cylinder 220 can also be selected to abut and take out according to the matching situation of the pin shaft.

[0028] In one of the embodiments, please refer toFigure 2 , the output end of the second cylinder 220 is fixedly connected with a cushion block 400.

[0029] In this embodiment, the setting of the cushion block 400 can prevent the output end of the second cylinder 220 from directly contacting the equipment, effectively improving the service life of the second cylinder 220.

[0030] In one embodiment, please refer to Figure 2 , the cushion block 400 is in a cuboid structure.

[0031] In this embodiment, the cushion block 400 is in a cuboid structure, which can increase the contact area between the second cylinder 220 and the equipment and help the pin shaft to disengage more quickly.

[0032] In one embodiment, please refer to Figure 1 , a support frame 500 is fixedly installed above the through hole 110. A round hole 510 is formed in the center of the support frame 500. The first cylinder 210 is fixedly installed on the support frame 500, and the output end of the first cylinder 210 sequentially passes through the round hole 510 and the through hole 110.

[0033] In this embodiment, the setting of the support frame 500 is mainly to facilitate the upward movement and removal after the pin is taken out.

[0034] In one embodiment, please refer to Figure 1 , both the first cylinder 210 and the second cylinder 220 are double-acting cylinders.

[0035] In this embodiment, both the first cylinder 210 and the second cylinder 220 are double-acting cylinders, which can increase the stability of use.

[0036] In one embodiment, please refer to Figure 2 , the magnetic part 300 is a strong magnet.

[0037] In one embodiment, please refer to Figure 2 , the magnetic part 300 is in a cuboid structure.

[0038] In one embodiment, please refer to Figure 1 , lifting lugs 130 are evenly distributed along the circumferential direction at the top edge of the chassis 100.

[0039] In this embodiment, the setting of the lifting lugs 130 is mainly used for hoisting and removing the pin.

[0040] In one embodiment, please refer to Figure 1 , a storage groove 140 is formed along the circumferential direction at the top of the chassis 100.

[0041] In this embodiment, the storage groove 140 can be used to place the pin and replace the pin.

[0042] To better understand the present utility model, the following will describe in detail the technical solution of the present utility model in conjunction with Figures 1 to 2 the following:

[0043] First, place the chassis 100 directly above the position where the pin needs to be removed. The form of hoisting or direct placement can be selected according to the position of the pumping unit. Then, start the first cylinder 210 to move the magnetic attraction member 300 downward, and it passes through the circular hole 510 and the through hole 110 in sequence until it magnetically attracts one end of the pin. Then, start the first cylinder 210 to contract and start the second cylinder 220 to continuously abut against or strike the periphery of the pin, so that the pin can be quickly disengaged. Then, use a tool to remove the pin from the magnetic attraction member 300. The above process is simpler and more efficient, and can improve the overall work efficiency.

[0044] The above specific embodiments of the present utility model do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A device for pulling out the crank pin shaft of a pumping unit, characterized in that Comprising: A chassis, a through hole is provided in the center of the chassis, and auxiliary holes are evenly distributed along the circumference of the chassis; A driving member, the driving member includes a first cylinder and a second cylinder, the first cylinder is installed in the center of the chassis, the output end of the first cylinder passes through the through hole and extends downward, the output end of the second cylinder penetrates through the auxiliary hole and extends downward, and the output end of the second cylinder is used to abut against the periphery of the pin shaft; And A magnetic attraction member, the magnetic attraction member is fixedly connected to the output end of the first cylinder.

2. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, wherein At least three auxiliary holes are provided, the second cylinder is fixedly installed directly above the auxiliary hole, and the second cylinder corresponds to the auxiliary hole one by one.

3. The pulling device for the crank pin shaft of a pumping unit according to claim 1, wherein, A cushion block is fixedly connected to the output end of the second cylinder.

4. The pulling-out device for the crank pin shaft of a pumping unit according to claim 3, characterized in that, The cushion block has a cuboid structure.

5. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, wherein, A support frame is fixedly installed above the through hole, a circular hole is provided in the center of the support frame, the first cylinder is fixedly installed on the support frame, and the output end of the first cylinder sequentially passes through the circular hole and the through hole.

6. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, wherein Both the first cylinder and the second cylinder are double-axis cylinders.

7. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, characterized in that, The magnetic attraction member is a strong magnet.

8. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, characterized in that, The magnetic attraction member has a cuboid structure.

9. The pulling-out device for the crank pin shaft of a pumping unit according to claim 1, characterized in that Lifting lugs are evenly distributed along the circumference at the top edge of the chassis.

10. The pulling device for the crank pin shaft of a pumping unit according to claim 1, characterized in that, A placement groove is provided along the circumference at the top of the chassis.

Images