CN218556186U - Hydraulic pump concave surface hole sliding bearing press mounting device - Google Patents
Hydraulic pump concave surface hole sliding bearing press mounting device Download PDFInfo
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- CN218556186U CN218556186U CN202222843457.1U CN202222843457U CN218556186U CN 218556186 U CN218556186 U CN 218556186U CN 202222843457 U CN202222843457 U CN 202222843457U CN 218556186 U CN218556186 U CN 218556186U
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- positioning sleeve
- sliding bearing
- hydraulic pump
- guide rod
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Abstract
The utility model relates to a hydraulic pump concave surface hole sliding bearing press mounting device, which belongs to the technical field of bearing press mounting; comprises a press machine, a positioning sleeve and a guide rod; the positioning sleeve is of a vertically arranged multi-diameter section cylindrical structure, a through hole which is communicated up and down is arranged at the axis of the positioning sleeve, an upper cylindrical surface and a lower cylindrical surface are respectively arranged on the outer side surfaces of the positioning sleeve, and the diameter of the upper cylindrical surface is larger than that of the lower cylindrical surface; the guide rod is of a vertically arranged multi-diameter section cylindrical structure and sequentially comprises an upper cylinder, a middle cylinder and a lower cylinder, wherein the diameters of the upper cylinder, the middle cylinder and the lower cylinder gradually decrease from top to bottom; the guide rod is inserted into the positioning sleeve, and an upper cylinder of the guide rod is in contact with the transition surface of the middle cylinder and the upper end surface of the positioning sleeve; the lower cylinder of the guide rod is inserted into the sliding bearing; the press acts on the upper end surface of the guide rod; the problem of relatively poor quality when the inside double-sliding bearing of hydraulic pump body pressure equipment at present is solved.
Description
Technical Field
The utility model belongs to the technical field of the bearing pressure equipment, concretely relates to hydraulic pump concave surface hole slide bearing pressure equipment device.
Background
As shown in fig. 1, 2 and 3, two groups of concave holes are arranged in the hydraulic pump body 1, each group of concave holes respectively comprises an upper inner cylindrical surface 2 and a lower inner cylindrical surface 3 which are coaxial, and the inner diameter of the upper inner cylindrical surface 2 is larger than that of the lower inner cylindrical surface 3. The axis of each group of concave surface holes is vertically arranged, two upper inner cylindrical surfaces 2 inside the two groups of concave surface holes are mutually communicated, and the two upper inner cylindrical surfaces 2 are not mutually communicated. The hydraulic pump requires a sliding bearing 4 to be fitted inside each of the two lower inner cylindrical surfaces 3 which are not connected.
The sliding bearing 4 is an open elastic bearing with a certain amount, the sliding bearing 4 cannot be pressed into an inner hole of a concave surface of a part at all under the free state without the aid of a tool and an external force, a traditional method has no professional positioning tool when the sliding bearing 4 is pressed, the method is simple, the working efficiency is low, a spindle is used for guiding downwards in the pressing process, a hammer is directly knocked in, the pressing direction of the sliding bearing 4 is inclined, the stress is not uniform, the plane of the part is deformed, the planeness is out of tolerance, the drawing requirement is 0.03mm, the actual measurement is 0.05-0.08 mm, the part is deformed (because the material is aluminum), burrs are generated on the bottom surface of the part, the end surface of a gear is scratched by the burrs, the one-time qualification rate of assembly is seriously influenced, and the conditions of low oil leakage volume efficiency of an oil pump and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a press mounting device for a sliding bearing of a concave hole of a hydraulic pump; the problem of relatively poor quality when the pressure equipment of inside two sliding bearing of hydraulic pump body at present is solved.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A press mounting device for a sliding bearing of a concave hole of a hydraulic pump comprises a press, a positioning sleeve and a guide rod; the positioning sleeve is of a vertically arranged multi-diameter-section cylindrical structure, a through hole which is communicated up and down is arranged at the axis of the positioning sleeve, an upper cylindrical surface and a lower cylindrical surface are respectively arranged on the outer side surfaces of the positioning sleeve, and the diameter of the upper cylindrical surface is larger than that of the lower cylindrical surface; the guide rod is of a vertically arranged multi-diameter section cylindrical structure and sequentially comprises an upper cylinder, a middle cylinder and a lower cylinder, wherein the diameters of the upper cylinder, the middle cylinder and the lower cylinder gradually decrease from top to bottom; the guide rod is inserted into the positioning sleeve, and an upper cylinder of the guide rod is in contact with the transition surface of the middle cylinder and the upper end surface of the positioning sleeve; the lower cylinder of the guide rod is inserted in the sliding bearing; the press acts on the upper end face of the guide rod.
Furthermore, the inner diameter of the through hole of the positioning sleeve is equal to the outer diameter of the sliding bearing.
Furthermore, the outer diameter of the lower end cylindrical surface of the positioning sleeve is equal to the inner diameter of the upper inner cylindrical surface of the hydraulic pump body, and the height of the lower end cylindrical surface is equal to the height of the upper inner cylindrical surface of the hydraulic pump body.
Furthermore, the outer diameter of the middle cylinder of the guide rod is equal to the inner diameter of the through hole of the positioning sleeve.
Further, the outer diameter of the lower cylinder of the guide rod is equal to the inner diameter of the sliding bearing.
Furthermore, the transition surface of the middle cylinder and the lower cylinder is a horizontal ring surface; the transition surface of the upper cylinder and the middle cylinder is a horizontal ring surface.
Furthermore, the positioning sleeve is inserted into the inner cylindrical surface of the upper inner circle of the pump body of the hydraulic pump; the transition plane between the upper inner cylindrical surface and the lower inner cylindrical surface inside the hydraulic pump body is in contact with the lower end face of the positioning sleeve.
Furthermore, the middle cylinder of the guide rod is contacted with the transition surface of the lower cylinder and the upper end surface of the sliding bearing.
The utility model discloses produced beneficial effect for prior art does:
through the utility model provides a pressure equipment device impresses slide bearing into the hydraulic pump body two lower inner cylinder faces with the atmospheric pressure mode, and the atress is even, and the part plane is indeformable, is 0.01-0.017 mm through the measurement plane degree. The flatness is not out of tolerance, the problem of damage to the sliding bearing is reduced, the sliding bearing is pressed in place, and the sliding bearing is high in bearing capacity, good in shock resistance, stable and reliable in work, low in noise, long in service life and the like.
Drawings
The invention will be described in further detail with reference to the accompanying drawings:
FIG. 1 is a front cross-sectional view of a pump body of a hydraulic pump;
FIG. 2 is a front cross-sectional view of a hydraulic pump body with a plain bearing mounted thereto;
FIG. 3 is a top view of a hydraulic pump body with plain bearings installed;
fig. 4 is a schematic structural view of the whole of the present invention;
FIG. 5 is a front cross-sectional view of the positioning sleeve;
FIG. 6 is a schematic view of the structure of the guide bar;
wherein, 1 is the pump body, 2 is upper inner cylinder face, 3 is lower inner cylinder face, 4 is the slide bearing, 5 is the position sleeve, 6 is the guide bar, 7 is the press, 8 is the via hole, 9 is the upper end cylinder face, 10 is the lower extreme cylinder face, 11 is the upper cylinder, 12 is the well cylinder, 13 is the lower cylinder.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.
As shown in fig. 4-6, the utility model provides a concave surface hole sliding bearing press mounting device for hydraulic pump, including press 7, position sleeve 5, guide bar 6.
The positioning sleeve 5 is of a vertically-arranged multi-diameter section cylindrical structure, a through hole 8 which is penetrated up and down is arranged at the axis of the positioning sleeve, and the inner diameter of the through hole 8 is equal to the outer diameter of the sliding bearing 4; the outer side surface of the cylinder is respectively provided with an upper cylindrical surface and a lower cylindrical surface, and the diameter of the upper cylindrical surface 9 is larger than that of the lower cylindrical surface 10. The outer diameter of the lower end cylindrical surface 10 is equal to the inner diameter of the upper inner cylindrical surface 2 of the hydraulic pump body 1, and the height of the lower end cylindrical surface 10 is equal to the height of the upper inner cylindrical surface 2 of the hydraulic pump body 1.
The positioning sleeve 5 is inserted into the inner cylindrical surface 2 of the hydraulic pump body 1. The transition plane between the upper inner cylindrical surface 2 and the lower inner cylindrical surface 3 inside the hydraulic pump body 1 is in contact with the lower end surface of the positioning sleeve 5. The guide rod 6 is vertically inserted downwards into the positioning sleeve 5, and an upper cylinder 11 of the guide rod 6 is in contact with a transition surface of a middle cylinder 12 and an upper end surface of the positioning sleeve 5.
The press 7 acts on the upper end face of the guide bar 6.
The utility model discloses a theory of operation does:
when two sliding bearings 4 need to be installed on two lower inner cylindrical surfaces 3 inside the hydraulic pump body 1, firstly, one sliding bearing 4 is placed at one lower inner cylindrical surface 3 inside the hydraulic pump body 1; then, the positioning sleeve 5 is placed at the corresponding upper inner cylindrical surface 2 in the pump body 1, and the sliding bearing 4 is ensured to be inserted into the lower end opening of the positioning sleeve 5; then, the guide rod 6 is inserted into the positioning sleeve 5, so that the lower cylinder 13 of the guide rod 6 is inserted into the sliding bearing 4, and the middle cylinder 12 of the guide rod 6 is ensured to be in contact with the transition surface of the lower cylinder 13 and the upper end surface of the sliding bearing 4; and finally, controlling the press machine 7 to press the guide rod 6 downwards, so that the guide rod 6 drives the sliding bearing 4 to be inserted into the lower inner cylindrical surface 3 of the pump body 1 until the transition surfaces of the upper cylinder 11 and the middle cylinder 12 of the guide rod 6 are contacted, and finishing the press mounting of the first sliding bearing 4.
Then the guide rod 6 and the positioning sleeve 5 are pulled out, and the above-mentioned process is installed to continuously press-fit the second sliding bearing 4 into the other lower inner cylindrical surface 3 in the pump body 1.
The mounting of the two slide bearings 4 is now completed.
Through a large number of use verifications, the sliding bearing 4 is pressed into the inner hole of the part in an air pressure mode of a press-mounting device, the stress is uniform, the plane of the part is not deformed, and the measured flatness is 0.01-0.017 mm. The flatness is not out of tolerance, the problem that the sliding bearing 4 is scratched due to damage can be solved, and the sliding bearing 4 is pressed in place, so that the bearing capacity of the sliding bearing 4 is high, the shock resistance is good, the work is stable and reliable, the noise is low, the service life is long, and the like.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a concave surface hole slide bearing pressure equipment device of hydraulic pump which characterized in that: comprises a press machine (7), a positioning sleeve (5) and a guide rod (6); the positioning sleeve (5) is of a vertically-arranged multi-diameter-section cylindrical structure, a through hole (8) which is communicated up and down is formed in the axis of the positioning sleeve, an upper cylindrical surface and a lower cylindrical surface are respectively arranged on the outer side surfaces of the positioning sleeve, and the diameter of the upper cylindrical surface (9) is larger than that of the lower cylindrical surface (10); the guide rod (6) is of a vertically arranged multi-diameter-section cylindrical structure and sequentially comprises an upper cylinder (11), a middle cylinder (12) and a lower cylinder (13) which gradually reduce in diameter from top to bottom; the guide rod (6) is inserted into the positioning sleeve (5), and an upper cylinder (11) of the guide rod (6) is in contact with the transition surface of the middle cylinder (12) and the upper end surface of the positioning sleeve (5); the lower cylinder (13) of the guide rod (6) is inserted in the sliding bearing (4); the press (7) acts on the upper end face of the guide rod (6).
2. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the inner diameter of the through hole (8) of the positioning sleeve (5) is equal to the outer diameter of the sliding bearing (4).
3. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the outer diameter of the lower end cylindrical surface (10) of the positioning sleeve (5) is equal to the inner diameter of the upper inner cylindrical surface (2) of the hydraulic pump body (1), and the height of the lower end cylindrical surface (10) is equal to the height of the upper inner cylindrical surface (2) of the hydraulic pump body (1).
4. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the outer diameter of the middle column (12) of the guide rod (6) is equal to the inner diameter of the through hole (8) of the positioning sleeve (5).
5. A press-fitting device for a concave hole sliding bearing of a hydraulic pump according to claim 1, characterized in that: the outer diameter of the lower cylinder (13) of the guide rod (6) is equal to the inner diameter of the sliding bearing (4).
6. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the transition surface of the middle cylinder (12) and the lower cylinder (13) is a horizontal ring surface; the transition surface of the upper cylinder (11) and the middle cylinder (12) is a horizontal ring surface.
7. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the positioning sleeve (5) is inserted into the inner cylindrical surface (2) of the upper inner cylinder of the hydraulic pump body (1); the transition plane between the upper inner cylindrical surface (2) and the lower inner cylindrical surface (3) in the hydraulic pump body (1) is contacted with the lower end surface of the positioning sleeve (5).
8. The press-fitting device for the sliding bearing with the concave hole of the hydraulic pump as claimed in claim 1, wherein: the middle cylinder (12) of the guide rod (6) is contacted with the transition surface of the lower cylinder (13) and the upper end surface of the sliding bearing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843457.1U CN218556186U (en) | 2022-10-27 | 2022-10-27 | Hydraulic pump concave surface hole sliding bearing press mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843457.1U CN218556186U (en) | 2022-10-27 | 2022-10-27 | Hydraulic pump concave surface hole sliding bearing press mounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218556186U true CN218556186U (en) | 2023-03-03 |
Family
ID=85318728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222843457.1U Active CN218556186U (en) | 2022-10-27 | 2022-10-27 | Hydraulic pump concave surface hole sliding bearing press mounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218556186U (en) |
-
2022
- 2022-10-27 CN CN202222843457.1U patent/CN218556186U/en active Active
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