CN212218344U - Harmless dismounting device of hydraulic pump integral key shaft - Google Patents
Harmless dismounting device of hydraulic pump integral key shaft Download PDFInfo
- Publication number
- CN212218344U CN212218344U CN202020437100.1U CN202020437100U CN212218344U CN 212218344 U CN212218344 U CN 212218344U CN 202020437100 U CN202020437100 U CN 202020437100U CN 212218344 U CN212218344 U CN 212218344U
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- hydraulic pump
- external thread
- hollow jack
- thread sleeve
- spline shaft
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Abstract
The utility model relates to a harmless dismounting device of hydraulic pump integral key shaft, its characterized in that: the front end of the spline shaft is provided with a ring platform or a ring groove; the hydraulic pump spline shaft nondestructive dismounting device comprises an external thread sleeve, a bearing nut and a hollow jack; the external thread sleeve is formed by attaching a left semi-cylindrical sleeve and a right semi-cylindrical sleeve, the front end of the external thread sleeve is provided with an inner flanging, and the inner flanging is matched with the ring platform or the ring groove so that the inner flanging can be clamped with the ring platform or the ring groove; the hollow jack is sleeved on the external thread sleeve, and the inner wall surface of the hollow jack is attached to the external thread sleeve to limit the left and right semi-cylindrical sleeves; the bearing nut is in threaded fit with the external threaded pipe, the upper end of the hollow jack is propped against the lower end of the bearing nut, the lower end of the hollow jack is supported on a hydraulic pump shell, upward thrust is applied to the bearing nut through the hollow jack, the external threaded pipe is driven to move upwards, and the spline shaft is further driven to be separated from the hydraulic pump.
Description
Technical Field
The utility model relates to a hydraulic pump part extracting tool technical field, concretely relates to harmless dismounting device of hydraulic pump integral key shaft.
Background
At present, take ring platform or annular structure hydraulic pump integral key shaft to adopt a simple and easy threaded connection integral key shaft extractor, because of the reason of connected mode, intensity and application of force mode the limitation is very big on using, and the tight fit, the required strength is great is dismantled to the integral key shaft of rusty or large-scale hydraulic pump, use old-fashioned extractor or other modes to carry out the operation and cause the damage of hydraulic pump or spline extractor easily, can't effectively dismantle the change, be unfavorable for trading, maintaining, the development of maintenance work.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the invention aims to solve the problem that a spline shaft with a ring platform or a ring groove structure cannot be effectively disassembled under the condition that the spline shaft is rusted, tightly matched or large in size and the like for a hydraulic pump and needs large pulling force for disassembly. In addition, the nondestructive dismounting device is dismounting in a drawing mode, and the dismounting device cannot be damaged or abrade dismounted equipment, such as a shaft hole of a pump.
The technical scheme is as follows: the method comprises the following steps of providing a nondestructive dismounting device for a spline shaft of the hydraulic pump, wherein the front end of the spline shaft is provided with a ring platform or a ring groove;
the hydraulic pump spline shaft nondestructive dismounting device comprises an external thread sleeve, a bearing nut and a hollow jack;
the external thread sleeve is formed by attaching a left semi-cylindrical sleeve and a right semi-cylindrical sleeve, the front end of the external thread sleeve is provided with an inner flanging, and the inner flanging is matched with the ring platform or the ring groove so that the inner flanging can be clamped with the ring platform or the ring groove; the hollow jack is sleeved on the external thread sleeve, and the hollow part of the hollow jack limits the left and right semi-cylindrical sleeves; the bearing nut is in threaded fit with the external threaded pipe, the upper end of the hollow jack is propped against the lower end of the bearing nut, the lower end of the hollow jack is supported on a hydraulic pump shell, upward thrust is applied to the bearing nut through the hollow jack, the external threaded pipe is driven to move upwards, and the spline shaft is further driven to be separated from the hydraulic pump.
The force transmission device further comprises a force transmission cushion block, wherein the force transmission cushion block is arranged between the upper end of the hollow jack and the lower end of the bearing nut and used for transmitting thrust.
Further, the section of the inner wall surface of the hollow jack is circular or rectangular.
Furthermore, the external thread sleeve is of an external thread structure from the front end to the rear end.
Furthermore, the rear half part of the external thread sleeve is of an external thread structure, and the front half part of the external thread sleeve is a cylindrical surface. Is favorable for improving the strength of the front end of the sleeve.
Furthermore, the hollow part of the hollow jack is in sliding fit or clearance fit with the left and right semi-cylindrical sleeves.
The technical effects are as follows: the utility model discloses become to have ring platform or annular structure integral key shaft to dismantle the special frock of changing, can effectively demolish it, replace old-fashioned frock unstability, unreliable, unsafe dismantlement form, avoided the loss such as hydraulic pump damage that improper operation caused simultaneously, have great promotion effect to change, maintenance, the maintenance work of hydraulic pump integral key shaft.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural sectional view of embodiment 1 of the present invention;
FIG. 3 is a structural sectional view of embodiment 2 of the present invention;
wherein: the hydraulic pump comprises 1-an external thread sleeve, 2-a bearing nut, 3-a hollow jack, 4-a hydraulic pump shell, 5-a hydraulic pump spline shaft and 6-a force transmission cushion block.
Detailed Description
The following specific embodiments are given in conjunction with the accompanying drawings
the hydraulic pump spline shaft nondestructive dismounting device comprises an external thread sleeve, a bearing nut and a hollow jack;
the external thread sleeve is formed by attaching a left semi-cylindrical sleeve and a right semi-cylindrical sleeve, the front end of the external thread sleeve is provided with an inner flanging, and the inner flanging is matched with the ring platform or the ring groove so that the inner flanging can be clamped with the ring platform or the ring groove; the hollow jack is sleeved on the external thread sleeve, and the hollow part of the hollow jack is attached to the external thread sleeve to limit the left and right semi-cylindrical sleeves; the bearing nut is in threaded fit with the external threaded pipe, the upper end of the hollow jack is propped against the lower end of the bearing nut, the lower end of the hollow jack is supported on a hydraulic pump shell, upward thrust is applied to the bearing nut through the hollow jack, the external threaded pipe is driven to move upwards, and the spline shaft is further driven to be separated from the hydraulic pump.
The section of the inner wall surface of the hollow jack is circular.
the hydraulic pump spline shaft nondestructive dismounting device comprises an external thread sleeve, a bearing nut and a hollow jack;
the external thread sleeve is formed by attaching a left semi-cylindrical sleeve and a right semi-cylindrical sleeve, the front end of the external thread sleeve is provided with an inner flanging, and the inner flanging is matched with the ring platform or the ring groove so that the inner flanging can be clamped with the ring platform or the ring groove; the hollow jack is sleeved on the external thread sleeve, and the hollow part of the hollow jack limits the left and right semi-cylindrical sleeves; the bearing nut is in threaded fit with the external threaded pipe, the upper end of the hollow jack is propped against the lower end of the bearing nut, the lower end of the hollow jack is supported on a hydraulic pump shell, upward thrust is applied to the bearing nut through the hollow jack, the external threaded pipe is driven to move upwards, and the spline shaft is further driven to be separated from the hydraulic pump.
The force transmission cushion block is arranged between the upper end of the hollow jack and the lower end of the bearing nut and used for transmitting thrust.
The section of the inner wall surface of the hollow jack is circular.
Claims (6)
1. The utility model provides a harmless dismounting device of hydraulic pump integral key shaft which characterized in that: the front end of the spline shaft is provided with a ring platform or a ring groove;
the hydraulic pump spline shaft nondestructive dismounting device comprises an external thread sleeve, a bearing nut and a hollow jack;
the external thread sleeve is formed by attaching a left semi-cylindrical sleeve and a right semi-cylindrical sleeve, the front end of the external thread sleeve is provided with an inner flanging, and the inner flanging is matched with the ring platform or the ring groove so that the inner flanging can be clamped with the ring platform or the ring groove; the hollow jack is sleeved on the external thread sleeve, and the inner wall surface of the hollow jack is attached to the external thread sleeve to limit the left and right semi-cylindrical sleeves; the bearing nut is in threaded fit with the external threaded pipe, the upper end of the hollow jack is propped against the lower end of the bearing nut, the lower end of the hollow jack is supported on a hydraulic pump shell, upward thrust is applied to the bearing nut through the hollow jack, the external threaded pipe is driven to move upwards, and the spline shaft is further driven to be separated from the hydraulic pump.
2. The hydraulic pump spline shaft nondestructive dismounting device of claim 1, characterized in that: the force transmission cushion block is arranged between the upper end of the hollow jack and the lower end of the bearing nut and used for transmitting thrust.
3. The hydraulic pump spline shaft nondestructive dismounting device of claim 1, characterized in that: the section of the hollow part of the hollow jack is circular or rectangular.
4. The hydraulic pump spline shaft nondestructive dismounting device of claim 1, characterized in that: the external thread sleeve is of an external thread structure from the front end to the rear end.
5. The hydraulic pump spline shaft nondestructive dismounting device of claim 1, characterized in that: the rear half part of the external thread sleeve is of an external thread structure, and the front half part of the external thread sleeve is a cylindrical surface.
6. The hydraulic pump spline shaft nondestructive dismounting device of claim 1, characterized in that: the hollow part of the hollow jack is in sliding fit or clearance fit with the left and right semi-cylindrical sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437100.1U CN212218344U (en) | 2020-03-30 | 2020-03-30 | Harmless dismounting device of hydraulic pump integral key shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437100.1U CN212218344U (en) | 2020-03-30 | 2020-03-30 | Harmless dismounting device of hydraulic pump integral key shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212218344U true CN212218344U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020437100.1U Active CN212218344U (en) | 2020-03-30 | 2020-03-30 | Harmless dismounting device of hydraulic pump integral key shaft |
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| Country | Link |
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| CN (1) | CN212218344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618382A (en) * | 2021-09-06 | 2021-11-09 | 湖南南方通用航空发动机有限公司 | Spline shaft dismounting device |
-
2020
- 2020-03-30 CN CN202020437100.1U patent/CN212218344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618382A (en) * | 2021-09-06 | 2021-11-09 | 湖南南方通用航空发动机有限公司 | Spline shaft dismounting device |
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