CN218984673U - Crank pin bushing taking-out and mounting device - Google Patents
Crank pin bushing taking-out and mounting device Download PDFInfo
- Publication number
- CN218984673U CN218984673U CN202223273591.9U CN202223273591U CN218984673U CN 218984673 U CN218984673 U CN 218984673U CN 202223273591 U CN202223273591 U CN 202223273591U CN 218984673 U CN218984673 U CN 218984673U
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- China
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- sleeve
- bearing sleeve
- mounting device
- rear end
- ejector rod
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Abstract
A crank pin bushing take-out and mounting device. The crank pin bushing mainly solves the problem that the existing crank pin bushing of the pumping unit needs a large hammer to smash and damage the crank. The method is characterized in that: the middle seat (1) is internally connected with the bearing sleeve (5) in a threaded manner, the front end of the bearing sleeve (5) is connected with a plurality of pull claws (3) uniformly distributed along the circumferential direction, the bearing sleeve (5) is internally connected with the ejector rod (2) in a threaded manner, the front end of the ejector rod (2) is provided with a frustum, and the diameter of the front end of the frustum is larger than that of the rear end. The device can safely detach and install the crank pin bushing, can not damage the crank, and is convenient to operate.
Description
Technical Field
The utility model relates to the field of oil pumping units, in particular to a crank pin bushing taking-out and mounting device.
Background
In order to complete the productivity production task and ensure the production balance to achieve the aim of saving energy, the oil field needs to continuously adjust the production parameters of the oil pumping unit, and the common method for adjusting the stroke on the ground is to adjust the position of a crank pin hole, and take out the bushing after taking out the bushing by using a crank pin of the oil pumping unit. The current method for taking the bushing is that the bushing is installed by hammering after hammering out the large hammer, and the bushing is also required to be lifted, so that certain potential safety hazard exists; meanwhile, because the operation space is narrow and the stress acting point is not fixed, the phenomenon that the large hammer wheel is empty and the crank is smashed and deformed by the large hammer easily occurs.
Disclosure of Invention
In order to solve the problem that the crank is damaged due to the fact that a large hammer is needed for taking out and installing the crank pin bush of the existing pumping unit, the utility model provides the crank pin bush taking out and installing device which can safely detach and install the crank pin bush, does not damage the crank and is convenient to operate.
The technical scheme of the utility model is as follows: the utility model provides a crank pin bush takes out installation device, includes the intermediate seat, the inside threaded connection of intermediate seat holds the force sleeve, holds the force sleeve front end and is connected with a plurality of along circumference equipartition pull claw, holds the inside threaded connection ejector pin of force sleeve, the ejector pin front end is equipped with the frustum, and frustum front end diameter is greater than the rear end diameter.
The rear end of the bearing sleeve is provided with a connecting sleeve, the connecting sleeve is connected with a sliding rod, the rear end of the sliding rod is provided with a plug, and the outside of the sliding rod is sleeved with a sliding sleeve.
The pull claw is connected to the bearing sleeve through a rotating shaft, and a drag hook is arranged on the outer surface of the front end of the pull claw.
The front end face of the middle seat is provided with a plurality of convex supporting tables.
A sleeve cap is arranged between the rear end of the bearing sleeve and the connecting sleeve, and the sleeve cap is in an outer hexagonal shape.
The rear end of the ejector rod extends out of the connecting sleeve, and the section of the rear end of the ejector rod is square.
And a fixing screw is connected between the side wall of the bearing sleeve and the ejector rod.
The utility model has the following beneficial effects: by adopting the scheme, the tool hooks the crank pin bushing through the pull claw, and the sleeve cap of the bearing sleeve is rotated to drive the pull claw to move backwards, so that the mounting and taking-out operations of the crank pin bushing can be realized rapidly. The relative positions of the middle seat and the bearing sleeve of the tool can be adjusted according to the thickness of the crank and the length of the crank pin bushing, so that the tool can be suitable for pumping units of various specifications and models. The whole operation process only needs to use a wrench, so that the operation is safe, time-saving and labor-saving, and the working efficiency is greatly improved. The tool has wide space and large displacement range during operation, and reduces the risk during operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic illustration of the present utility model after installation of a sliding sleeve;
fig. 3 and 4 are schematic diagrams of the present utility model in operation.
In the figure, the device comprises a middle seat 1, a push rod 2, a pull claw 3, a sleeve cap 4, a bearing sleeve 5, a fixing screw 6, a sliding sleeve 7, a sliding rod 8 and a plug 9.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the device for taking out and installing the crank pin bushing comprises a middle seat 1, wherein a plurality of protruding supporting tables are arranged on the front end face of the middle seat 1, are uniformly distributed along the circumferential direction and can be supported outside a crank during operation. The middle seat 1 is provided with a plurality of lightening holes, so that the overall weight of the device can be lightened, and the lightening holes can also play a role of reinforcing ribs. The middle seat 1 is internally connected with the bearing sleeve 5 in a threaded manner, the front end of the bearing sleeve 5 is connected with a plurality of pull claws 3 uniformly distributed along the circumferential direction, the pull claws 3 are connected to the bearing sleeve 5 through rotating shafts and can be opened and retracted, the outer surface of the front end of each pull claw 3 is provided with a drag hook, and the drag hooks can be hooked on the end face of the crank pin bushing after the pull claws 3 are opened. The rear end of the bearing sleeve 5 is sequentially provided with a sleeve cap 4 and a connecting sleeve, the sleeve cap 4 and the connecting sleeve can be integrally processed with the bearing sleeve 5, the sleeve cap 4 is in an outer hexagonal shape, and the bearing sleeve 5 can be conveniently rotated by using a wrench.
The inner thread of the bearing sleeve 5 is connected with the ejector rod 2, the front end of the ejector rod 2 is provided with a frustum, the diameter of the rear end of the frustum is consistent with that of the ejector rod 2, and the diameter of the front end of the frustum is larger than that of the rear end, so that when the ejector rod 2 moves backwards, the pull claw 3 can be outwards opened. And a fixing screw 6 is connected between the side wall of the bearing sleeve 5 and the ejector rod 2, and after the ejector rod 2 stretches the pull claw 3, the fixing screw 6 is screwed, so that the relative position of the ejector rod 2 and the bearing sleeve 5 is prevented from moving. The rear end of the ejector rod 2 extends out of the connecting sleeve, the section of the rear end of the ejector rod 2 is square, and the ejector rod 2 can be rotated by a spanner to enable the ejector rod 2 to move back and forth relative to the bearing sleeve 5.
The external surface of the connecting sleeve of the bearing sleeve 5 is provided with threads, the sliding rod 8 can be connected through the threads, the sliding sleeve 7 is sleeved outside the sliding rod 8, the plug 9 is arranged at the rear end of the sliding rod 8, the external diameter of the plug 9 is larger than the internal diameter of the sliding sleeve 7, and the sliding sleeve 7 is prevented from falling off. To save effort, the handle can be fixed to the outside of the sliding sleeve 7.
When the crankpin needs to be replaced, the pumping unit is stopped to a position suitable for operation, and the crankpin is taken out, and the tool is put into the crankpin bushing. The ejector rod 2 is rotated, the frustum at the front end of the ejector rod 2 moves backwards, the pull claw 3 is unfolded, the drag hook on the pull claw 3 grasps the crank pin bushing, and the supporting table on the front end surface of the middle seat 1 is propped against the crank. The cap 4 is turned by a wrench to drive the pull claw 3 to move backward, so that the crank pin bushing is removed. When the wrench is not rotated, the slide bar 8 can be additionally arranged on the connecting sleeve, then the slide sleeve 7 moves back and forth on the slide bar 8, and the crank pin bushing can be taken out under the action of strong inertia force. When the crank pin bush is mounted, the bush is aligned with the bush hole, the bush is hooked by the pull claw 3, and the intermediate seat 1 is supported on the opposite side of the crank from the bush, and the crank pin bush can be mounted on the crank in the same manner as described above.
The tool is used in the stroke parameter adjustment of more than 80 pumping units at present, the taking and mounting processes are stable, the operation is safe, the equipment is not damaged, the ascending is not needed, and the operation can be completed at any height and any direction suitable for the operation. The tool has universality, is suitable for pumping units of different types and specifications, can quickly and conveniently realize the adjustment of the stroke adjustment of the pumping unit on the premise of not changing the structure of the pumping unit, can reduce the stroke adjustment operation time of the pumping unit by about 30 minutes, greatly improves the working efficiency, reduces the labor intensity of workers and has remarkable economic benefit.
Claims (7)
1. Crank pin bush takes out installation device, including intermediate seat (1), its characterized in that: the middle seat (1) is internally connected with the bearing sleeve (5) in a threaded manner, the front end of the bearing sleeve (5) is connected with a plurality of pull claws (3) uniformly distributed along the circumferential direction, the bearing sleeve (5) is internally connected with the ejector rod (2) in a threaded manner, the front end of the ejector rod (2) is provided with a frustum, and the diameter of the front end of the frustum is larger than that of the rear end.
2. The crankpin bushing take-out and mounting device according to claim 1, wherein: the rear end of the bearing sleeve (5) is provided with a connecting sleeve, the connecting sleeve is connected with a sliding rod (8), the rear end of the sliding rod (8) is provided with a plug (9), and the outside of the sliding rod (8) is sleeved with a sliding sleeve (7).
3. The crankpin bushing take-out mounting device according to claim 1 or 2, characterized in that: the pull claw (3) is connected to the bearing sleeve (5) through a rotating shaft, and a drag hook is arranged on the outer surface of the front end of the pull claw (3).
4. A crankpin bushing take-out mounting device according to claim 3, characterized in that: the front end face of the middle seat (1) is provided with a plurality of convex supporting tables.
5. A crankpin bushing take-out mounting device according to claim 3, characterized in that: a sleeve cap (4) is arranged between the rear end of the bearing sleeve (5) and the connecting sleeve, and the sleeve cap (4) is in an outer hexagonal shape.
6. A crankpin bushing take-out mounting device according to claim 3, characterized in that: the rear end of the ejector rod (2) extends out of the connecting sleeve, and the section of the rear end of the ejector rod (2) is square.
7. A crankpin bushing take-out mounting device according to claim 3, characterized in that: a fixing screw (6) is connected between the side wall of the bearing sleeve (5) and the ejector rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223273591.9U CN218984673U (en) | 2022-12-07 | 2022-12-07 | Crank pin bushing taking-out and mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223273591.9U CN218984673U (en) | 2022-12-07 | 2022-12-07 | Crank pin bushing taking-out and mounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218984673U true CN218984673U (en) | 2023-05-09 |
Family
ID=86192787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223273591.9U Active CN218984673U (en) | 2022-12-07 | 2022-12-07 | Crank pin bushing taking-out and mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218984673U (en) |
-
2022
- 2022-12-07 CN CN202223273591.9U patent/CN218984673U/en active Active
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