CN218905234U

CN218905234U - Crank key and bushing pulling device of oil pumping unit

Info

Publication number: CN218905234U
Application number: CN202222461869.9U
Authority: CN
Inventors: 席雷雷; 席涛; 郭伟; 冯伟洋; 赵斌; 赵丽丽
Original assignee: Jingbian Oil Extraction Factory Shaanxi Yanchang Oilfield Co ltd
Current assignee: Jingbian Oil Extraction Factory Shaanxi Yanchang Oilfield Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-04-25
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses a crank key and bushing pulling-out device of an oil pumping unit, which comprises a supporting plate, wherein a bearing seat is fixedly arranged on the surface of the supporting plate, a key groove is formed in the inner wall of the bearing seat, a fixing hole is formed in the inner wall of the key groove, a steel key is arranged on the inner side of the key groove, a round pile is arranged on the surface of the steel key, the round pile is positioned in the fixing hole, a handle is arranged on a first nut, supporting rods are arranged at two ends of the supporting plate, and a second nut and a gasket are respectively arranged on the supporting rods. This beam-pumping unit crank key and bush pull out device, the lead screw passes the bush, then passes through the spacing groove card with the limiting plate on the lead screw, when twisting first nut, first nut carries out the displacement through the screw thread on the lead screw, so first nut can promote bearing frame and backup pad and lean on the direction to the bush on the lead screw and move, is favorable to stably pulling out the bush, avoids using the sledge hammer to strike.

Description

Crank key and bushing pulling device of oil pumping unit

Technical Field

The utility model relates to the technical field of oil extraction machinery, in particular to a crank key and bushing extracting device of an oil pumping unit.

Background

The beam pumping unit is characterized in that the motor rotates at a high speed to supply power to drive the input shaft, the intermediate shaft and the output shaft of the reduction gearbox to change into the low-speed motion of the crank of the pumping unit, the crank, the connecting rod and the beam change the rotation motion into the up-and-down reciprocating motion of the horsehead, the pumping unit runs for almost 24 hours, the reduction gearbox and the crank are easy to damage seriously, and the crank needs to be disassembled and replaced at the moment.

The crank shaft has very strong holding force to the crank key, so that the crank key is difficult to pull out, the traditional method is that 2 to 3 people use a large hammer to pound the crank key in turn to eject the crank key, the labor intensity is high, the safety is not guaranteed, the labor time is long, time and labor are wasted, the well opening time rate is seriously affected, meanwhile, in the operation process of the pumping unit, the damage of a crank pin and a bush easily occurs, because the crank pin bush is tightly contacted with the wall surface of the crank hole, when the crank pin bush is maintained or replaced, or the stroke is required to be regulated, the bush is not easy to detach from the crank hole, the traditional method also uses the large hammer to pound out the crank key, so scratches are generated on the surface of the bush or the surface of the crank hole, the serious deformation and even scrapping are caused, the labor and time are wasted, the potential safety hazard is high, and the maintenance quality is not guaranteed, so that the downtime of the pumping unit is long.

In order to solve the above problems, it is highly desirable to design a crank key and bushing extracting device of a pumping unit.

Disclosure of Invention

The utility model aims to provide a crank key and bushing pulling-out device of an oil pumping unit, which aims to solve at least one technical problem in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a crank key and bush extraction device of beam-pumping unit, includes the backup pad, the fixed surface of backup pad installs the bearing frame, the keyway has been seted up on the inner wall of bearing frame, the fixed orifices has been seted up on the inner wall of keyway, the inboard of keyway is provided with the steel key, the surface mounting of steel key has the round pile, the round pile is located the fixed orifices, the inboard of bearing frame is provided with the lead screw, grooved rail has been seted up on the surface of lead screw, the one end that the keyway was kept away from to the steel key is located grooved rail, thrust bearing is installed to the one end that the backup pad was kept away from to the bearing frame, thrust bearing is provided with first nut in one side that the bearing frame was kept away from, first nut is located the outside of lead screw, install the handle on the first nut, the bracing piece is installed at the both ends of backup pad, install second nut and gasket on the bracing piece respectively.

Preferably, the steel key is welded with the round pile, and the round pile is embedded in the fixing hole.

Preferably, the steel key is in sliding connection with the screw rod through the grooved rail.

Preferably, the first nut is in threaded connection with the screw rod, and the handle is symmetrically welded on the surface of the first nut.

Preferably, a bushing is arranged on the outer side of the screw rod, a limiting plate is arranged on the outer side of one end, far away from the first nut, of the screw rod, and a limiting groove is formed in the limiting plate.

Preferably, the screw is provided with the screw outside the one end that the lead screw kept away from first nut, the butt joint department outside of lead screw and screw is provided with the crescent moon cover, the outside of crescent moon cover is provided with the sleeve, the one end that the lead screw was kept away from to the screw is provided with the crank key, the butt joint hole has been seted up on the crank key, the crank key passes through butt joint hole and screw threaded connection.

Preferably, the crescent moon sleeve is provided with two, two crescent moon sleeves are nested in the outer sides of the screw and the screw rod, and the outer walls of the two crescent moon sleeves are mutually attached to the inner wall of the sleeve.

Compared with the prior art, the utility model has the beneficial effects that: the crank key and the bushing extracting device of the pumping unit;

1. the screw rod passes through the bushing, then the limiting plate is clamped on the screw rod through the limiting groove, and when the first nut is screwed, the first nut is displaced on the screw rod through threads, so that the first nut can push the bearing seat and the supporting plate to move on the screw rod towards the direction of the bushing (for the movement of the supporting plate, the screw rod moves towards the direction of the supporting plate by pulling the bushing through the limiting plate based on the position of the supporting plate), the bushing is stably pulled out, and the need of knocking by using a large hammer is avoided;

2. the screw rod can be connected with the screw through the crescent moon bush and the sleeve, and the screw can screw in the butt joint hole on the crank key, when twisting the first nut, the first nut drives the screw rod through the screw thread and moves to the direction of keeping away from the screw in the backup pad, so make things convenient for the screw rod to drive the crank key through the screw and pull out, alleviateed workman's intensity of labour when promoting the dismantlement efficiency of crank key, reduced the dismantlement risk.

Drawings

FIG. 1 is a schematic view of the overall structure of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of the overall structure of a second embodiment of the present utility model;

FIG. 3 is a schematic view of a cross-sectional structure of the screw and screw connection of the present utility model;

FIG. 4 is a schematic top view of a limiting plate according to the present utility model;

FIG. 5 is a schematic diagram of a cross-sectional side view of the connection of the screw and the bearing seat of the present utility model;

FIG. 6 is a schematic view of a bearing seat in a three-dimensional structure according to the present utility model;

FIG. 7 is a schematic view of the crescent moon cover structure of the present utility model.

In the figure: 1. a support plate; 2. a bearing seat; 3. a key slot; 4. a fixing hole; 5. a steel key; 6. round piles; 7. a screw rod; 8. a grooved rail; 9. a thrust bearing; 10. a first nut; 11. a handle; 12. a support rod; 13. a second nut; 14. a gasket; 15. a bushing; 16. a limiting plate; 17. a limit groove; 18. a screw; 19. a crescent moon sleeve; 20. a sleeve; 21. a crank key; 22. and (5) butting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, the present utility model provides a technical solution: the utility model provides a crank key and bush pull-out device of beam-pumping unit, including backup pad 1, backup pad 1's fixed surface installs bearing frame 2, set up keyway 3 on the inner wall of bearing frame 2, fixed orifices 4 have been set up on the inner wall of keyway 3, the inboard of keyway 3 is provided with steel key 5, steel key 5's surface mounting has round stake 6, round stake 6 is located fixed orifices 4, bearing frame 2's inboard is provided with lead screw 7, grooved rail 8 has been seted up on lead screw 7's surface, the one end that keyway 3 was kept away from to steel key 5 is located grooved rail 8, thrust bearing 9 is installed to bearing frame 2's one end that backup pad 1 was kept away from, thrust bearing 9 is provided with first nut 10 on one side that bearing frame 2 was kept away from, first nut 10 is located the outside of lead screw 7, install handle 11 on the first nut 10, bracing piece 12 is installed at the both ends of backup pad 1, install second nut 13 and gasket 14 on the bracing piece 12 respectively.

Be welded connection between steel key 5 and the circular pile 6, circular pile 6 is embedded in fixed orifices 4, and steel key 5 passes through grooved rail 8 and lead screw 7 sliding connection, and steel key 5 can be through the cooperation stable mounting between circular pile 6 and the fixed orifices 4 in keyway 3, has promoted steel key 5 and has used stability, and the cooperation between steel key 5 and grooved rail 8 can restrict the direction of rotation of lead screw 7, avoids driving lead screw 7 and carries out synchronous rotary motion when twisting first nut 10 and rotate.

The first nut 10 is in threaded connection with the screw rod 7, the handle 11 is symmetrically welded on the surface of the first nut 10, the first nut 10 can be driven to rotate on the screw rod 7 through the handle 11, and accordingly the rotating first nut 10 can move on the support plate 1 in a displacement mode by pulling the screw rod 7 through threads.

The outside of lead screw 7 is provided with bush 15, and the one end outside that lead screw 7 kept away from first nut 10 is provided with limiting plate 16, has seted up spacing groove 17 on the limiting plate 16, and limiting plate 16 can block on lead screw 7 through spacing groove 17 to when lead screw 7 moves on backup pad 1, lead screw 7 at this moment can pull bush 15 through limiting plate 16 and extract.

The screw 18 is provided with in the one end outside that first nut 10 was kept away from to the lead screw 7, the butt joint department outside of lead screw 7 and screw 18 is provided with crescent cover 19, the outside of crescent cover 19 is provided with sleeve 20, the one end that the lead screw 7 was kept away from to the screw 18 is provided with crank key 21, the butt joint hole 22 has been seted up on the crank key 21, crank key 21 passes through butt joint hole 22 and screw 18 threaded connection, crescent cover 19 cover is established in the hookup location outside of lead screw 7 and screw 18, can restrict the position of lead screw 7 and screw 18, and sleeve 20 then can restrict crescent cover 19, prevent that two crescent covers 19 from taking place loosely.

The crescent moon cover 19 is provided with two, and two crescent moon covers 19 are all nested in the outside of screw 18 and lead screw 7, and the outer wall of two crescent moon covers 19 all laminates each other with the inner wall of sleeve 20, has also promoted the stability of butt joint between screw 18 and the lead screw 7 when having promoted the stability of crescent moon cover 19 installation, avoids breaking away from the connection between screw 18 and the lead screw 7.

Working principle: according to fig. 1-7, when the bushing 15 needs to be disassembled, the screw rod 7 passes through the bushing 15, then the limiting plate 16 is clamped on the screw rod 7 through the limiting groove 17, at the moment, the first nut 10 is manually driven to rotate on the screw rod 7 through the handle 11, and the screw rod 7 is connected with the bearing seat 2 through the steel key 5, so when the first nut 10 rotates, the first nut 10 at the moment does not drive the screw rod 7 to synchronously rotate, but pushes the screw rod 7 to displace on the supporting plate 1 under the action of threads, and the supporting rod 12 on the supporting plate 1 is propped against the crank surface, so when the screw rod 7 displaces on the supporting plate 1, the screw rod 7 pulls the bushing 15 through the limiting plate 16 to be pulled out;

according to fig. 2, 3 and 7, when the crank key 21 needs to be disassembled, the screw 18 is first screwed on the crank key 21 through the butt hole 22, the sleeve 20 passes through the bottom end of the screw rod 7, so that the sleeve 20 is opened downwards, then the screw rod 7 is aligned with the screw 18, then the two crescent moon sleeves 19 are sleeved on the outer sides of the screw 18 and the screw rod 7, then the sleeve 20 is pushed downwards until the sleeve 20 is sleeved on the outer sides of the two crescent moon sleeves 19, the screw rod 7 and the screw 18 are connected, then the handle 11 drives the first nut 10 to rotate on the screw rod 7 according to the principle, so that the screw rod 7 moves on the supporting plate 1 and the crank key 21 is pulled out through the screw 18 to complete the disassembly.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a crank key and bush pull out device of beam-pumping unit which characterized in that: including backup pad (1), the fixed surface of backup pad (1) installs bearing frame (2), set up keyway (3) on the inner wall of bearing frame (2), fixed orifices (4) have been seted up on the inner wall of keyway (3), the inboard of keyway (3) is provided with steel key (5), the surface mounting of steel key (5) has round stake (6), round stake (6) are located fixed orifices (4), the inboard of bearing frame (2) is provided with lead screw (7), grooved rail (8) have been seted up on the surface of lead screw (7), thrust bearing (9) are installed to the one end that the keyway (3) was kept away from to steel key (5), one side that thrust bearing (9) kept away from bearing frame (2) is provided with first nut (10), first nut (10) are located the outside of lead screw (7), install handle (11) on first nut (10), the both ends of backup pad (1) are installed in supporting rod (12), second nut (12) are installed respectively to gasket (14).

2. The pumping unit crank key and bushing extraction apparatus of claim 1, wherein: the steel key (5) is welded with the round pile (6), and the round pile (6) is embedded in the fixing hole (4).

3. The pumping unit crank key and bushing extraction apparatus of claim 1, wherein: the steel key (5) is connected with the screw rod (7) in a sliding way through the groove rail (8).

4. The pumping unit crank key and bushing extraction apparatus of claim 1, wherein: the first nut (10) is in threaded connection with the screw rod (7), and the handle (11) is symmetrically welded on the surface of the first nut (10).

5. The pumping unit crank key and bushing extraction apparatus of claim 1, wherein: the outside of lead screw (7) is provided with bush (15), the one end outside that lead screw (7) kept away from first nut (10) is provided with limiting plate (16), limiting groove (17) have been seted up on limiting plate (16).

6. The pumping unit crank key and bushing extraction apparatus of claim 1, wherein: screw (18) are arranged outside one end of the screw rod (7) away from the first nut (10), crescent sleeve (19) are arranged outside the butt joint position of the screw rod (7) and the screw (18), sleeve (20) are arranged outside the crescent sleeve (19), crank key (21) are arranged at one end of the screw rod (18) away from the screw rod (7), butt joint holes (22) are formed in the crank key (21), and the crank key (21) is in threaded connection with the screw (18) through the butt joint holes (22).

7. The pumping unit crank key and bushing extraction apparatus of claim 6, wherein: the crescent moon cover (19) is provided with two, two crescent moon cover (19) are all nested in the outside of screw (18) and lead screw (7), two the outer wall of crescent moon cover (19) all laminates each other with the inner wall of sleeve (20).