CN219747771U - Hydraulic pump tail shaft graphite ring seal assembly fixture - Google Patents
Hydraulic pump tail shaft graphite ring seal assembly fixture Download PDFInfo
- Publication number
- CN219747771U CN219747771U CN202321397546.6U CN202321397546U CN219747771U CN 219747771 U CN219747771 U CN 219747771U CN 202321397546 U CN202321397546 U CN 202321397546U CN 219747771 U CN219747771 U CN 219747771U
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- CN
- China
- Prior art keywords
- graphite ring
- tail shaft
- hydraulic pump
- seal assembly
- guide
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model relates to the technical field of hydraulic pump tail shaft assembly, in particular to a hydraulic pump tail shaft graphite ring sealing assembly fixture, which comprises: a base; the guide device is used for fixing the graphite ring sealing shell and is matched with the base to provide installation guide for the piston ring, the isolator, the spring, the bushing and the graphite ring; the pressing plate is used for pressing the piston ring, the isolator, the spring, the bushing and the graphite ring to realize the assembly of the graphite ring sealing assembly; and the compression nut penetrates through the pressing plate and is connected with the guide device and is used for providing a pressing force for the pressing plate through rotation. The utility model effectively solves the problem of inconvenient assembly of the piston ring and the isolator in the process of sealing and installing the graphite ring. The tail shaft sealing device has the characteristics of high efficiency, convenience and accuracy in use, and has remarkable effect of improving the installation efficiency and accuracy of tail shaft sealing assembly of pump products.
Description
Technical Field
The utility model relates to the technical field of hydraulic pump tail shaft assembly, in particular to an assembly fixture for a graphite ring seal assembly of a hydraulic pump tail shaft.
Background
Part of hydraulic pump products of the aircraft realize the sealing function by means of a graphite ring sealing component in a pump tail shaft and a plane seal matched with a steel bushing. As shown in fig. 1 and 2 (1. Graphite ring, 2. Bushing, 3. Isolator, 4. Piston ring, 5. Housing, 6. Spring), the graphite ring seal assembly acts to maintain the tail shaft seal of the pump and provide a preload force to maintain a tight fit with the steel bushing, which can have serious consequences for leakage of the tail shaft of the pump if the graphite ring seal assembly is not in place, thus insuring that the graphite ring seal is in place during product assembly. The original assembly method of the graphite sealing ring component is that an operator uses a manual assembly method to sequentially load the piston ring, the isolator, 18 small springs and the graphite bushing into the shell, and the assembly difficulty is that the piston ring and the graphite bushing shell need to be scratched by a scratch needle by the operator when the operator ensures that the springs are tightly pressed, so that the bottom of the isolator is tightly attached to the piston ring without protrusions, the operation is very inconvenient, time and labor are wasted, the operation difficulty of the installation method is high, the surface quality of the piston ring is easy to damage, the stability is poor, and the risk is high. Therefore, an efficient and convenient assembly fixture for the graphite ring sealing assembly of the tail shaft of the hydraulic pump is needed to be designed.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an assembly fixture for a graphite ring sealing assembly of a hydraulic pump tail shaft.
The technical problems to be solved by the utility model are realized by adopting the following technical scheme:
an assembly fixture for a graphite ring seal assembly of a tail shaft of a hydraulic pump, comprising:
the base is used for positioning the depth of the graphite ring seal shell before and after installation;
the guide device is used for fixing the graphite ring sealing shell and is matched with the base to provide installation guide for the piston ring, the isolator, the spring, the bushing and the graphite ring;
the pressing plate is used for pressing the piston ring, the isolator, the spring, the bushing and the graphite ring to realize the assembly of the graphite ring sealing assembly;
and the compression nut penetrates through the pressing plate and is connected with the guide device and is used for providing a pressing force for the pressing plate through rotation.
As a further improvement of the utility model, the overall dimensions are 65mm by 70mm.
As a further improvement of the utility model, the base is of a concave round hole-shaped structure, and a positioning groove is arranged in the base.
As a further development of the utility model, the bottom of the guide is provided with an annular protruding step, between which an installation guide surface is provided with the guide top.
As a further improvement of the utility model, a connecting threaded hole connected with the compression nut is arranged at the top center of the guide.
As a further improvement of the utility model, the pressing plate is provided with an avoiding groove extending from the center to the edge.
As a further improvement of the utility model, the bottom of the compression nut is provided with a connecting threaded column which is matched and connected with the connecting threaded hole.
As a further improvement of the utility model, the bottom of the compression nut is also provided with a pressing end block matched with the pressing plate.
The beneficial effects of the utility model are as follows:
the utility model provides the assembly fixture for the graphite ring sealing assembly of the hydraulic pump tail shaft, which effectively solves the problem of inconvenient assembly of the piston ring and the isolator in the process of sealing and installing the graphite ring. The tail shaft sealing device has the characteristics of high efficiency, convenience and accuracy in use, and has remarkable effect of improving the installation efficiency and accuracy of tail shaft sealing assembly of pump products.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic cross-sectional structural view of a graphite seal ring assembly;
FIG. 2 is a schematic diagram of an exploded construction of a graphite seal ring assembly;
FIG. 3 is a schematic diagram of the overall structure of the present utility model;
FIG. 4 is a schematic cross-sectional view of the present utility model;
FIG. 5 is a schematic cross-sectional view of a base of the present utility model;
FIG. 6 is a schematic cross-sectional view of a guide according to the present utility model;
FIG. 7 is a schematic perspective view of a platen according to the present utility model;
fig. 8 is a schematic perspective view of a compression nut according to the present utility model.
In the figure: 1. a graphite ring; 2. a bushing; 3. an isolator; 4. a piston ring; 5. a housing; 6. a spring; 11. a base; 111. a positioning groove; 22. a guide; 221. an annular protruding step; 222. installing a guide surface; 223. a connecting threaded hole; 33. a pressing plate; 331. avoiding slotting; 44. a compression nut; 441. connecting a threaded column; 442. the pressure end block.
Detailed Description
In order that the manner in which the utility model is attained, as well as the features and advantages thereof, will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
As shown in fig. 3 to 8, an assembly fixture for a sealing assembly of a graphite ring of a tail shaft of a hydraulic pump mainly comprises a base 11, a guide 22, a pressing plate 33 and a compression nut 44. The whole size of the tool is 65mm multiplied by 70mm, and the tool has the characteristics of light weight, convenience in use and the like.
The base 11 is of a concave round hole-shaped structure, and can realize the depth positioning of the graphite ring seal shell before and after installation. The inside of base 11 is provided with positioning groove 111, positioning groove 111's internal diameter size and graphite ring seal housing's external diameter size adaptation.
The bottom of the guide 22 is provided with an annular protruding step 221, a mounting guide surface 222 is arranged between the annular protruding step 221 and the top of the guide 22, a connecting threaded hole 223 is arranged at the center of the top of the guide 22, and the connecting threaded hole 223 is used for connecting the compression nut 44. The guide 22 is used for fixing the graphite ring sealing shell and is matched with the base 11 to provide installation guide for the piston ring, the isolator, the spring, the bushing and the graphite ring.
The pressing plate 33 is provided with an avoidance groove 331 extending from the center to the edge, and the pressing plate 33 is used for pressing a piston ring, an isolator, a spring, a bushing and a graphite ring to realize the assembly of the graphite ring sealing assembly.
The bottom of the compression nut 44 is provided with a connection screw post 441 cooperatively connected with the connection screw hole 223, and a pressing end block 442 cooperatively connected with the pressing plate 33. The compression nut 44 is connected to the guide 22 through the pressure plate 33 for providing an exerting force to the pressure plate 33 by rotation.
The working principle and the using flow of the utility model are as follows:
when the assembly tool is used, firstly, the guide 22 is arranged in the base 11, then the graphite ring sealing shell is deeply arranged in the guide 22, then the piston ring, the isolator, the eighteen springs and the graphite ring are sequentially arranged in the graphite ring sealing shell, then the graphite ring is pressed by the pressing plate 33, the connecting threaded column 441 at the bottom of the pressing nut 44 penetrates through the avoiding groove 331 on the pressing plate 33 to extend into the connecting threaded hole 223, the pressing end block 442 at the bottom of the pressing nut 44 is attached to the upper plate surface of the pressing plate 33, and the pressing plate 33 is pressed downwards by rotating the pressing nut 44, so that the piston ring, the isolator, the spring, the bushing and the graphite ring are sequentially pressed into the graphite ring sealing shell pump without manual pressing in the whole installation process, the problems of high operation difficulty, poor surface quality, poor stability and high risk of the piston ring are solved, and in addition, the assembly tool integrates the guide 22, the pressing plate 33 and the pressing nut 44 together, has an automatic alignment function, so that the assembly time of a graphite ring assembly is obviously shortened, and the assembly efficiency and accuracy of the graphite ring assembly are greatly improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a hydraulic pump tail shaft graphite ring seal assembly fixture which characterized in that: comprising the following steps:
the base (11) is used for positioning the depth of the graphite ring sealing ring shell before and after installation;
the guide device (22) is used for fixing the graphite ring sealing ring shell and is matched with the base (11) to provide installation guide for the piston ring, the isolator, the spring, the bushing and the graphite ring;
the pressing plate (33) is used for pressing the piston ring, the isolator, the spring, the bushing and the graphite ring to realize the assembly of the graphite ring sealing assembly;
a compression nut (44) connected to the guide (22) through the pressure plate (33) for providing a pressing force to the pressure plate (33) by rotation.
2. The hydraulic pump tail shaft graphite ring seal assembly fixture as claimed in claim 1, wherein: the overall dimensions were 65mm by 70mm.
3. The hydraulic pump tail shaft graphite ring seal assembly fixture as claimed in claim 1, wherein: the base (11) is of a concave round hole-shaped structure, and a positioning groove (111) is formed in the base (11).
4. The hydraulic pump tail shaft graphite ring seal assembly fixture as claimed in claim 1, wherein: the bottom of the guide (22) is provided with an annular protruding step (221), and a mounting guide surface (222) is arranged between the annular protruding step (221) and the top of the guide (22).
5. The hydraulic pump tail shaft graphite ring seal assembly fixture as set forth in claim 4, wherein: a connecting threaded hole (223) connected with the compression nut (44) is arranged at the top center of the guide (22).
6. The hydraulic pump tail shaft graphite ring seal assembly fixture as claimed in claim 1, wherein: the pressing plate (33) is provided with an avoidance slot (331) extending from the center to the edge.
7. The hydraulic pump tail shaft graphite ring seal assembly fixture as set forth in claim 5, wherein: the bottom of the compression nut (44) is provided with a connecting threaded column (441) which is in matched connection with the connecting threaded hole (223).
8. The hydraulic pump tail shaft graphite ring seal assembly tooling as set forth in claim 7, wherein: the bottom of the compression nut (44) is also provided with a pressing end block (442) matched with the pressing plate (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321397546.6U CN219747771U (en) | 2023-06-03 | 2023-06-03 | Hydraulic pump tail shaft graphite ring seal assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321397546.6U CN219747771U (en) | 2023-06-03 | 2023-06-03 | Hydraulic pump tail shaft graphite ring seal assembly fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219747771U true CN219747771U (en) | 2023-09-26 |
Family
ID=88073906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321397546.6U Active CN219747771U (en) | 2023-06-03 | 2023-06-03 | Hydraulic pump tail shaft graphite ring seal assembly fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219747771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798858A (en) * | 2023-12-08 | 2024-04-02 | 中国航发长江动力有限公司 | Installation fixture and assembly method of graphite ring and graphite installation ring |
-
2023
- 2023-06-03 CN CN202321397546.6U patent/CN219747771U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117798858A (en) * | 2023-12-08 | 2024-04-02 | 中国航发长江动力有限公司 | Installation fixture and assembly method of graphite ring and graphite installation ring |
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