CN219711770U - Sealing mechanism of hydraulic pump - Google Patents
Sealing mechanism of hydraulic pump Download PDFInfo
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- CN219711770U CN219711770U CN202320450018.6U CN202320450018U CN219711770U CN 219711770 U CN219711770 U CN 219711770U CN 202320450018 U CN202320450018 U CN 202320450018U CN 219711770 U CN219711770 U CN 219711770U
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- hydraulic pump
- sealing
- pump body
- rotating shaft
- sealing ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 176
- 238000009434 installation Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
The utility model discloses a sealing mechanism of a hydraulic pump, which relates to the technical field of hydraulic pumps and comprises a sealing mechanism main body of the hydraulic pump, wherein the sealing mechanism main body of the hydraulic pump comprises a hydraulic pump body and a rotating shaft, a pump body inner sealing structure is arranged in the hydraulic pump body, and a rotating shaft sealing structure is arranged outside the rotating shaft; the pump body inner sealing structure comprises a lining unit and a pump body sealing unit, wherein the lining unit is arranged on the inner side surface of the hydraulic pump body, and the pump body sealing unit is arranged outside the lining unit. According to the utility model, the inner sealing ring is installed through the clamping connection of the inner installation groove on the rotating shaft, the outer surface of the inner sealing ring is contacted with the inner surface of the end cover of the hydraulic pump body, the end cover of the hydraulic pump body is sealed, the annular pipe sealing convex strip and the annular groove are arranged between the contact surfaces of the inner sealing ring and the special-shaped sealing ring, the friction force is reduced in the rotating process of the rotating shaft, and the wear resistance between the inner sealing ring and the special-shaped sealing ring is improved.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pumps, and particularly relates to a sealing mechanism of a hydraulic pump.
Background
At present, a lifting mechanism of a commercial vehicle cab generally consists of a manual hydraulic pump, a hydraulic lifting cylinder, an oil pipe and the like, and mechanical energy is converted into hydraulic kinetic energy and then into mechanical energy, so that lifting and falling-back of the cab are realized. The lifting oil nozzle and the descending oil nozzle of the hydraulic pump in the prior art are downward, and then the high-pressure oil pipe is connected with the lifting oil nozzle and the descending oil nozzle of the hydraulic lifting cylinder, and the problem of poor sealing performance at the rotating shaft of the hydraulic pump easily exists in the structure, so that the sealing mechanism of the hydraulic pump is provided.
In the prior art, a Chinese patent document with publication number of CN207005292U and publication date of 2018, 02 and 13 is proposed to solve the above technical problems, and the technical scheme disclosed in the patent document is as follows: the utility model discloses a rotating shaft sealing mechanism for a hydraulic pump, which comprises a rotating shaft (2) inserted into a shaft hole of a pump body (1), and also comprises a bushing (3) arranged between the pump body (1) and the rotating shaft (2), wherein the bushing (3) comprises a cylindrical main body part (31), one end of the main body part (31) is provided with a flange part (32), the main body part (31) is inserted into the shaft hole of the pump body (1), and the flange part (32) is tightly attached to the end surface of the shaft hole of the pump body (1); a groove (21) is formed in the outer surface of the rotating shaft (2), and an O-shaped sealing ring (4) for sealing the outer surface of the rotating shaft (2) and the inner surface of the main body part (31) is arranged in the groove (21).
In order to solve the problem that the installation is inconvenient because two bushing O-shaped sealing rings are installed in grooves formed by two bushings in the inner hole of a hydraulic oil pump body in the prior art, the prior art adopts a single bushing and processes the grooves on the surface of the rotating shaft so that the rotating shaft and the bushing are matched and sealed, but the situation that the installation is simplified but the sealing is not tight enough because the grooves are processed on the rotating shaft and the O-shaped sealing rings are reinserted into the middle part of the single bushing, and the problem that the sealing performance is reduced seriously due to abrasion between the O-shaped sealing rings and the bushings after the rotating shaft and the pump body are used for a long time is caused.
Disclosure of Invention
The utility model aims to provide a sealing mechanism of a hydraulic pump
The sealing mechanism of the hydraulic pump comprises a sealing mechanism main body of the hydraulic pump, wherein the sealing mechanism main body of the hydraulic pump comprises a hydraulic pump body and a rotating shaft, a pump body inner sealing structure is arranged in the hydraulic pump body, and a rotating shaft sealing structure is arranged outside the rotating shaft; the pump body inner sealing structure comprises a lining unit and a pump body sealing unit, wherein the lining unit is arranged on the inner side surface of the hydraulic pump body, and the pump body sealing unit is arranged outside the lining unit; the rotating shaft sealing structure comprises an inner sealing unit and an outer sealing unit, wherein the inner sealing unit is arranged at the lower end of the rotating shaft, and the outer sealing unit is arranged at the upper end of the rotating shaft.
The technical scheme of the utility model is further improved as follows: the bushing unit includes a bushing fixedly installed at an inner surface of the hydraulic pump body.
By adopting the technical scheme, the lining is arranged on the inner wall of the hydraulic pump body, so that the special-shaped sealing ring is convenient to clamp and fix.
The technical scheme of the utility model is further improved as follows: the pump body sealing unit comprises a special-shaped sealing ring which is installed on the inner surface of the hydraulic pump body in a clamping way, and a clamping groove which is matched with the bushing is formed in the outer side surface of the special-shaped sealing ring.
By adopting the technical scheme, the inner surface of the special-shaped sealing ring is contacted with the outer surface of the rotating shaft to play a role in sealing the inside of the pump body.
The technical scheme of the utility model is further improved as follows: the inner sealing unit comprises an inner sealing ring which is installed on the outer surface of the lower end of the rotating shaft in a clamping mode, an installation groove which is matched with the inner sealing ring is formed in the inner surface of the hydraulic pump body, and the side surface of the inner sealing ring is in contact with the side surface of the special-shaped sealing ring.
By adopting the technical scheme, the outer surface of the inner mounting groove is provided with the annular pipe sealing convex strip, the surface of the special-shaped sealing ring is provided with the annular groove, friction force is reduced in the rotating process, and the wear resistance between the inner sealing ring and the special-shaped sealing ring is improved.
The technical scheme of the utility model is further improved as follows: the inner sealing unit further comprises an inner mounting groove formed in the outer surface of the lower end of the rotating shaft, and the outer surface of the inner mounting groove is clamped with the surface of the inner sealing ring.
By adopting the technical scheme, the inner mounting groove is convenient for clamping and mounting the inner sealing ring.
The technical scheme of the utility model is further improved as follows: the outer sealing unit comprises an outer sealing ring sleeved on the outer surface of the upper end of the rotating shaft, and one side surface of the outer sealing ring is clamped with the surface of the end cover of the hydraulic pump body.
By adopting the technical scheme, the outer sealing ring plays a role in three-stage sealing between the outer part of the rotating shaft and the outer contact surface of the end cover.
The technical scheme of the utility model is further improved as follows: the outer sealing unit further comprises a first outer mounting groove and a second outer mounting groove which are formed in the outer surface of the upper end of the rotating shaft, and the outer surfaces of the first outer mounting groove and the second outer mounting groove are clamped with the surface of the outer sealing ring.
By adopting the technical scheme, the first outer mounting groove and the second outer mounting groove are convenient for clamping and mounting the outer sealing ring.
The technical scheme of the utility model is further improved as follows: the outer sealing unit further comprises a pressing hoop sleeved on the outer surface of the upper end of the rotating shaft, a clamping groove matched with the outer sealing ring is formed in the middle of the pressing hoop, and the surface of the pressing hoop is fixedly connected with an end cover of the hydraulic pump body through bolts and nuts.
By adopting the technical scheme, the external sealing ring is compressed by the compression hoop, so that the tightness is improved, and the installation and the disassembly are convenient.
1. The beneficial effects of the utility model are as follows: the bush is at the inner wall of the hydraulic pump body, makes things convenient for the special-shaped sealing washer to carry out the joint fixedly, and special-shaped sealing washer internal surface and the surface contact of axis of rotation play the sealed effect to the inside of the pump body, and be convenient for install.
2. The beneficial effects of the utility model are as follows: the inner mounting groove on the rotating shaft is convenient for clamping and mounting the inner sealing ring, the outer surface of the inner sealing ring is contacted with the inner surface of the end cover of the hydraulic pump body to seal the end cover of the hydraulic pump body, and the annular pipe sealing convex strip and the annular groove are arranged between the contact surfaces of the inner sealing ring and the special-shaped sealing ring, so that friction force is reduced in the rotating process of the rotating shaft, and the wear resistance between the inner sealing ring and the special-shaped sealing ring is improved.
3. The beneficial effects of the utility model are as follows: the first outer installation groove and the second outer installation groove at the upper end of the rotating shaft are convenient for the clamping and the installation of the outer sealing ring, the outer sealing ring is tightly pressed by the matched pressing hoop, the sealing effect between the outer contact surface of the rotating shaft and the outer contact surface of the end cover is achieved, and meanwhile the installation and the disassembly are convenient.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the post-installation construction of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic view of the disassembled structure of the interior of the present utility model;
FIG. 4 is a schematic view of the internal rotating shaft mounting structure of the present utility model;
fig. 5 is a schematic cross-sectional structure of the special-shaped seal ring and the inner seal ring in the utility model.
Marked in the figure as: 1. a sealing mechanism body of the hydraulic pump; 11. a hydraulic pump body; 12. a rotating shaft; 2. a seal structure in the pump body; 21. a bushing; 22. a special-shaped sealing ring; 3. a rotary shaft sealing structure; 31. an inner seal ring; 32. an inner mounting groove; 33. an outer seal ring; 34. a first outer mounting groove; 35. a second outer mounting groove; 36. and (5) pressing the hoops.
Detailed Description
Example 1
As shown in 1-5, a sealing mechanism of a hydraulic pump comprises a sealing mechanism main body 1 of the hydraulic pump, wherein the sealing mechanism main body 1 of the hydraulic pump comprises a hydraulic pump body 11 and a rotating shaft 12, a pump body inner sealing structure 2 is arranged in the hydraulic pump body 11, and a rotating shaft sealing structure 3 is arranged outside the rotating shaft 12; the pump body internal sealing structure 2 comprises a lining unit and a pump body sealing unit, wherein the lining unit is arranged on the inner side surface of the hydraulic pump body 11, and the pump body sealing unit is arranged outside the lining unit; the rotary shaft sealing structure 3 comprises an inner sealing unit and an outer sealing unit, wherein the inner sealing unit is arranged at the lower end of the rotary shaft 12, the outer sealing unit is arranged at the upper end of the rotary shaft 12, the lining unit comprises a lining 21 fixedly arranged on the inner surface of the hydraulic pump body 11, the pump body sealing unit comprises a special-shaped sealing ring 22 which is installed on the inner surface of the hydraulic pump body 11 in a clamping manner, a clamping groove which is matched with the lining 21 is formed in the outer surface of the special-shaped sealing ring 22, the lining 21 is installed on the inner wall of the hydraulic pump body 11 in a clamping manner, and the inner surface of the special-shaped sealing ring 22 is contacted with the outer surface of the rotary shaft 12 to play a role in primary sealing inside the pump body.
Example 2
As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the inner sealing unit comprises an inner sealing ring 31 which is installed on the outer surface of the lower end of the rotating shaft 12 in a clamping manner, an installation groove which is matched with the inner sealing ring 31 is formed in the inner surface of the hydraulic pump body 11, the side surface of the inner sealing ring 31 is contacted with the side surface of the special-shaped sealing ring 22, the inner sealing unit further comprises an inner installation groove 32 which is formed in the outer surface of the lower end of the rotating shaft 12, the outer surface of the inner installation groove 32 is clamped with the surface of the inner sealing ring 31, the inner sealing ring 31 is conveniently clamped and installed in the inner installation groove 32, the outer surface of the inner sealing ring 31 is contacted with the inner surface of the end cover of the hydraulic pump body 11, the end cover of the hydraulic pump body 11 is subjected to secondary sealing, an annular pipe sealing convex strip and an annular groove are arranged between the contact surfaces of the inner sealing ring 31 and the special-shaped sealing ring 22, friction force is reduced in the rotating process of the rotating shaft 12, and the wear resistance between the inner sealing ring 31 and the special-shaped sealing ring 22 is improved.
Example 3
As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the outer sealing unit comprises an outer sealing ring 33 sleeved on the outer surface of the upper end of the rotating shaft 12, one side surface of the outer sealing ring 33 is clamped with the surface of the end cover of the hydraulic pump body 11, the outer sealing unit further comprises a first outer mounting groove 34 and a second outer mounting groove 35 which are formed in the outer surface of the upper end of the rotating shaft 12, the outer surfaces of the first outer mounting groove 34 and the second outer mounting groove 35 are clamped with the surface of the outer sealing ring 33, the outer sealing unit further comprises a pressing hoop 36 sleeved on the outer surface of the upper end of the rotating shaft 12, the middle part of the pressing hoop 36 is provided with a clamping groove matched with the outer sealing ring 33, the surface of the pressing hoop 36 is fixedly connected with the end cover of the hydraulic pump body 11 through bolts and nuts, the first outer mounting groove 34 and the second outer mounting groove 35 are convenient for clamping and mounting the outer sealing ring 33, the matching pressing hoop 36 is used for pressing the outer sealing ring 33, a three-level sealing effect between the outer contact surface of the rotating shaft 12 and the outer end cover is convenient to install and detach.
The working principle of the sealing mechanism of the hydraulic pump will be described in detail.
As shown in fig. 1 to 5, firstly, the special-shaped sealing ring 22 is clamped and fixed with the bushing 21 inside the hydraulic pump body 11 to perform primary sealing inside the pump body, then, the inner sealing ring 31 is clamped and fixed with the inner mounting groove 32 at the lower end of the rotating shaft 12, the rotating shaft 12 is mounted and fixed with the hydraulic pump body 11 to ensure that the inner sealing ring 31 and the special-shaped sealing ring 22 are contacted and embedded to rotate, the end cover of the hydraulic pump body 11 is subjected to secondary sealing, finally, the outer sealing ring 33 is clamped and fixed with the first outer mounting groove 34 and the second outer mounting groove 35, the outer side of the outer sealing ring 33 is pressed by using the pressing hoop 36 and then is fixed with the surface of the end cover of the hydraulic pump body 11 by using bolts and nuts, and tertiary sealing is performed between the outer contact surface of the rotating shaft 12 and the outer contact surface of the end cover, and the assembly of the sealing mechanism of the hydraulic pump is completed.
The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The sealing mechanism of the hydraulic pump is suitable for sealing assembly between a hydraulic pump body and a rotating shaft and comprises a sealing mechanism main body (1) of the hydraulic pump, wherein the sealing mechanism main body (1) of the hydraulic pump comprises a hydraulic pump body (11) and the rotating shaft (12), and is characterized in that a pump body inner sealing structure (2) is arranged in the hydraulic pump body (11), and a rotating shaft sealing structure (3) is arranged outside the rotating shaft (12);
the pump body inner sealing structure (2) comprises a lining unit and a pump body sealing unit, wherein the lining unit is arranged on the inner side surface of the hydraulic pump body (11), and the pump body sealing unit is arranged outside the lining unit;
the rotating shaft sealing structure (3) comprises an inner sealing unit and an outer sealing unit, wherein the inner sealing unit is arranged at the lower end of the rotating shaft (12), and the outer sealing unit is arranged at the upper end of the rotating shaft (12).
2. A sealing mechanism of a hydraulic pump according to claim 1, characterized in that the bushing unit comprises a bushing (21) fixedly mounted on the inner surface of the hydraulic pump body (11).
3. The sealing mechanism of the hydraulic pump according to claim 2, wherein the pump body sealing unit comprises a special-shaped sealing ring (22) which is clamped and installed on the inner surface of the hydraulic pump body (11), and a clamping groove matched with the bushing (21) is formed on the outer side surface of the special-shaped sealing ring (22).
4. A sealing mechanism of a hydraulic pump according to claim 3, characterized in that the inner sealing unit comprises an inner sealing ring (31) which is clamped and mounted on the outer surface of the lower end of the rotating shaft (12), the inner surface of the hydraulic pump body (11) is provided with a mounting groove which is matched with the inner sealing ring (31), and the side surface of the inner sealing ring (31) is contacted with the side surface of the special-shaped sealing ring (22).
5. The sealing mechanism of a hydraulic pump according to claim 4, wherein the inner sealing unit further comprises an inner mounting groove (32) formed on an outer surface of a lower end of the rotating shaft (12), and an outer surface of the inner mounting groove (32) is engaged with a surface of the inner seal ring (31).
6. The sealing mechanism of the hydraulic pump according to claim 1, wherein the outer sealing unit comprises an outer sealing ring (33) sleeved on the outer surface of the upper end of the rotating shaft (12), and one side surface of the outer sealing ring (33) is clamped with the surface of the end cover of the hydraulic pump body (11).
7. The sealing mechanism of a hydraulic pump according to any one of claims 1 to 6, characterized in that the outer sealing unit further includes a first outer mounting groove (34) and a second outer mounting groove (35) provided on an outer surface of an upper end of the rotating shaft (12), and an outer surface of the first outer mounting groove (34) and the second outer mounting groove (35) are engaged with a surface of the outer seal ring (33).
8. The sealing mechanism of a hydraulic pump according to any one of claims 1 to 6, characterized in that the outer sealing unit further comprises a pressing hoop (36) sleeved on the outer surface of the upper end of the rotating shaft (12), a clamping groove matched with the outer sealing ring (33) is formed in the middle of the pressing hoop (36), and the surface of the pressing hoop (36) is fixedly connected with an end cover of the hydraulic pump body (11) through bolts and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320450018.6U CN219711770U (en) | 2023-03-08 | 2023-03-08 | Sealing mechanism of hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320450018.6U CN219711770U (en) | 2023-03-08 | 2023-03-08 | Sealing mechanism of hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711770U true CN219711770U (en) | 2023-09-19 |
Family
ID=87981708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320450018.6U Active CN219711770U (en) | 2023-03-08 | 2023-03-08 | Sealing mechanism of hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711770U (en) |
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2023
- 2023-03-08 CN CN202320450018.6U patent/CN219711770U/en active Active
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