CN216642928U - Internal part positioning structure of hydraulic shock absorber - Google Patents
Internal part positioning structure of hydraulic shock absorber Download PDFInfo
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- CN216642928U CN216642928U CN202122930092.1U CN202122930092U CN216642928U CN 216642928 U CN216642928 U CN 216642928U CN 202122930092 U CN202122930092 U CN 202122930092U CN 216642928 U CN216642928 U CN 216642928U
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Abstract
The utility model provides a positioning structure for internal parts of a hydraulic shock absorber, which comprises an external oil storage cylinder assembly, a bottom check valve assembly and an internal oil cylinder body, wherein the bottom check valve assembly and the internal oil cylinder body are arranged in the external oil storage cylinder assembly; the inner oil cylinder body is sleeved on the central circular truncated cone, so that positioning assembly between the bottom check valve assembly and the inner oil cylinder body is realized; and a positioning guide counter bore is formed in the outer oil storage cylinder assembly, and a positioning guide boss is inserted into the positioning guide counter bore to realize positioning assembly between the bottom check valve assembly and the outer oil storage cylinder assembly. The function of the internal part positioning of the oil pressure shock absorber can be realized, the function of the automatic guiding and positioning of the oil pressure shock absorber in the assembling process can be realized, and meanwhile, the fault that the internal part is displaced to cause the failure of the oil pressure shock absorber due to the knocking of foreign matters in the using process can be avoided.
Description
Technical Field
The utility model relates to the technical field of shock absorbers, in particular to a positioning structure for internal parts of a hydraulic shock absorber.
Background
The oil pressure vibration absorber product is widely applied to the suspension field of rail transit vehicles, plays the roles of vibration absorption and limiting connection, and transmits vibration and slows down vibration. Along with the improvement of the requirements on the running speed and the comfort of the rail transit vehicle, the requirements on the service life and the performance of an oil pressure shock absorber product are higher and higher.
When the oil pressure shock absorber with the one-way circulation structure works, internal hydraulic oil converts external mechanical energy into self heat energy and distributes the heat energy out to play a role in slowing down vibration, and therefore, internal parts are designed into a precise self-circulation hydraulic system to guarantee normal work of the oil pressure shock absorber. If the internal parts deviate due to the fact that the oil pressure shock absorber is not aligned in the assembling process or is impacted during working, a precise self-circulation hydraulic system in the oil pressure shock absorber can be caused to break down, the service life of the oil pressure shock absorber is greatly shortened, and a sealing system fails. At present, no mutual positioning measures exist among internal parts of the oil pressure shock absorber with a common single-circulation structure, the central coaxiality of all the parts cannot be guaranteed during assembly, and the sealing performance and the service life of the oil pressure shock absorber are greatly influenced.
In view of the above, there is a need for a positioning structure for internal components of a hydraulic shock absorber to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a positioning structure for internal parts of a hydraulic shock absorber, which aims to solve the problems of poor assembly coaxiality and influence on the sealing performance and the service life of the hydraulic shock absorber caused by no mutual positioning measures among the internal parts of the hydraulic shock absorber, and the specific technical scheme is as follows:
a positioning structure for internal parts of a hydraulic shock absorber comprises an outer oil storage cylinder assembly, and a bottom check valve assembly and an internal oil cylinder body which are both arranged in the outer oil storage cylinder assembly, wherein one side of the bottom check valve assembly is provided with a central round table, and the other side of the bottom check valve assembly is provided with a positioning guide boss; the inner oil cylinder body is sleeved on the central circular truncated cone, so that positioning assembly between the bottom check valve assembly and the inner oil cylinder body is realized; and the outer oil storage cylinder assembly is provided with a positioning guide counter bore, and the positioning guide boss is inserted into the positioning guide counter bore to realize positioning assembly between the bottom check valve assembly and the outer oil storage cylinder assembly.
Preferably, in the above technical scheme, the central circular truncated cone and the positioning guide boss are coaxial, and the axis of the positioning guide counter bore coincides with the axis of the outer oil storage cylinder assembly.
Preferably, in the above technical scheme, the inner cylinder body and the central circular truncated cone are in interference fit.
Preferably, in the above technical scheme, the positioning guide boss is in clearance fit with the positioning guide counter bore.
Preferably in the above technical scheme, the bottom check valve assembly includes a valve body, and the central circular truncated cone is disposed on the valve body.
Preferably, in the above technical solution, the bottom check valve assembly further comprises a check valve screw cap, and the check valve screw cap is fixed on the valve body through a bolt; the positioning guide boss is a protruding structure on the valve body, or the positioning guide boss is a part of the bolt protruding out of the valve body.
Preferably, in the above technical scheme, the outer oil storage cylinder assembly comprises a cylinder body and a chassis, the cylinder body is arranged on the chassis, and the positioning guide counter bore is arranged on the chassis.
Preferably, in the above technical solution, the axis of the cylinder coincides with the axis of the positioning guide counterbore.
Preferably, in the above technical scheme, the cylinder and the chassis are welded.
The technical scheme of the utility model has the following beneficial effects:
in the positioning structure, the bottom check valve component is inserted into the positioning guide counter bore of the outer oil storage cylinder component through the positioning guide boss, so that the degree of freedom of lower parts of the oil pressure shock absorber in the relative horizontal direction is limited, and the bottom check valve component is ensured not to be locally deformed due to center offset, so that a hydraulic oil self-circulation system in the oil pressure shock absorber fails; the inner oil cylinder body and the central circular truncated cone are in interference fit, and are mounted in a compression joint mode, so that the deflection freedom degree of the piston in reciprocating motion in the inner oil cylinder body is limited, and meanwhile, the bottom cavity is sealed.
Through the guide positioning combined design among the bottom check valve assembly, the outer oil storage cylinder assembly and the inner oil cylinder body, the function of positioning internal parts of the oil pressure shock absorber can be realized, the function of automatically guiding and positioning the oil pressure shock absorber in the assembling process can be realized, meanwhile, the fault that the internal parts are displaced to cause the failure of the oil pressure shock absorber due to the fact that foreign matters in the using process knock (such as flying stones) can be avoided, and the service life is prolonged.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is an assembled schematic view of a bottom check valve assembly, an outer reservoir assembly and an inner cylinder block in embodiment 1;
FIG. 2 is a schematic structural view of a bottom check valve assembly of embodiment 1;
FIG. 3 is a schematic view showing the construction of an outer reserve tube assembly in embodiment 1;
FIG. 4 is a schematic structural view of an internal cylinder body in embodiment 1;
FIG. 5 is a schematic view of the construction of the bottom check valve assembly of embodiment 2;
the oil cylinder comprises a bottom check valve assembly 1, a check valve screw cap 1.1, a check valve screw cap 1.2, an elastic element 1.3, a valve plate 1.4, a valve body 1.5, a central circular truncated cone 1.6, a positioning guide boss 2, an outer oil cylinder assembly 2.1, a positioning guide counter bore 2.2, a cylinder body 2.3, a chassis 3 and an inner oil cylinder body.
Detailed Description
In order that the utility model may be more fully understood, a more particular description of the utility model will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example 1:
referring to fig. 1-4, an internal part positioning structure of a hydraulic shock absorber comprises an outer oil storage cylinder assembly 2, and a bottom check valve assembly 1 and an inner oil cylinder body 3 both arranged inside the outer oil storage cylinder assembly 2, wherein one side of the bottom check valve assembly 1 is provided with a central circular truncated cone 1.5, and the other side thereof is provided with a positioning guide boss 1.6 (namely, the central circular truncated cone and the positioning guide boss are respectively arranged on two opposite sides); the inner oil cylinder body 3 is sleeved on the central circular truncated cone 1.5, so that positioning assembly between the bottom check valve assembly 1 and the inner oil cylinder body 3 is realized; and a positioning guide counter bore 2.1 is formed in the outer oil storage cylinder assembly 2, and the positioning guide boss 1.6 is inserted into the positioning guide counter bore 2.1, so that positioning assembly between the bottom check valve assembly 1 and the outer oil storage cylinder assembly 2 is realized.
Preferably, the central circular truncated cone 1.5 and the positioning guide boss 1.6 are coaxial, and the axis of the positioning guide counter bore 2.1 is superposed with the axis of the outer oil storage cylinder assembly 2; thereby ensuring the coaxiality of the assembly among the outer oil storage cylinder assembly 2, the bottom one-way valve assembly 1 and the inner oil cylinder body 3.
Further preferably, the inner cylinder body 3 and the central circular truncated cone 1.5 are in interference fit, as shown in fig. 1, 2 and 4, that is, the inner diameter phid 1 of the inner cylinder body 3 and the diameter phid 2 of the central circular truncated cone 1.5 are in interference fit, the height H2 of the central circular truncated cone 1.5, the height phid 2 and the height phid 1 can be adjusted according to actual conditions, and the inner cylinder body 3 and the central circular truncated cone 1.5 are press-fitted.
Referring to fig. 1-3, the positioning guide boss 1.6 is in clearance fit with the positioning guide counterbore 2.1, that is, the diameter phid 1 of the positioning guide boss 1.6 is in clearance fit with the inner diameter phid 2 of the positioning guide counterbore 2.1, and the depth H1 of the positioning guide counterbore 2.1, the height H1 of the positioning guide boss 1.6, the phid 1 and the phid 2 can all be adjusted according to actual conditions, so that the positioning guide boss 1.6 can be inserted into the positioning guide counterbore 2.1.
In this embodiment, the fit dimensions and tolerances of the interference fit and the clearance fit may be adjusted and modified according to design requirements.
Referring to fig. 2, the bottom check valve assembly 1 includes a check valve screw cap 1.1, an elastic element 1.2, a valve plate 1.3 and a valve body 1.4, and please refer to the prior art for the specific structural relationship and the operation principle of the bottom check valve assembly 1, which will not be further described here. As shown in fig. 2, in the present embodiment, the valve body 1.4 is of a low-noise structure, and the check valve screw cap 1.1 is fixed on the valve body 1.4 by bolts.
Specifically, the central circular truncated cone 1.5 is arranged on the valve body 1.4; the positioning guide boss 1.6 is a protruding structure on the valve body 1.4.
Referring to fig. 3, the outer oil storage cylinder assembly 2 comprises a cylinder body 2.2 and a chassis 2.3, the cylinder body 2.2 is arranged on the chassis 2.3, the positioning guide counter bore 2.1 is arranged on the chassis 2.3, and the axis of the cylinder body 2.2 is coincident with the axis of the positioning guide counter bore 2.1; preferably, the barrel 2.2 and the chassis 2.3 are welded.
In the present embodiment, the inner cylinder block 3 is preferably formed by machining a steel pipe or round steel.
The embodiment also provides an assembly method of the internal parts of the hydraulic shock absorber, which is characterized in that a press-fitting tool is firstly used for assembling (namely press-fitting) the central circular truncated cone 1.5 on the bottom check valve assembly 1 and the internal cylinder body 3, and the press-fitting tool can be of a pneumatic or hydraulic structure. Then place outer oil storage cylinder subassembly 2 perpendicularly, put into outer oil storage cylinder subassembly 2's inside with bottom check valve subassembly 1 and inside hydro-cylinder body 3 together for during location direction boss 1.6 inserts location direction counter bore 2.1, thereby accomplish outer oil storage cylinder subassembly 2, bottom check valve subassembly 1 and the assembly of 3 three location of inside hydro-cylinder body.
Example 2:
referring to fig. 5, the present embodiment is different from embodiment 1 in that: the check valve screw cap 1.1 is fixed on the valve body 1.4 through a bolt, and the positioning guide boss 1.6 is a part of the bolt protruding out of the valve body 1.4.
The valve body 1.4 illustrated in fig. 5 is of a conventional structure, and it should be noted that the valve body is of a low-noise structure or a conventional structure, and even in other structural forms, and is not necessarily related to the form of the positioning guide boss, and the positioning guide boss is a portion of the bolt protruding out of the valve body, or a protruding structure on the valve body 1.4 may be determined according to actual design requirements.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A positioning structure for internal parts of a hydraulic shock absorber comprises an outer oil storage cylinder assembly (2), and a bottom check valve assembly (1) and an internal oil cylinder body (3) which are arranged in the outer oil storage cylinder assembly (2), and is characterized in that one side of the bottom check valve assembly (1) is provided with a central round platform (1.5), and the other side of the bottom check valve assembly is provided with a positioning guide boss (1.6); the inner oil cylinder body (3) is sleeved on the central circular truncated cone (1.5), so that the positioning assembly between the bottom check valve assembly (1) and the inner oil cylinder body (3) is realized; the outer oil storage cylinder assembly (2) is provided with a positioning guide counter bore (2.1), and the positioning guide boss (1.6) is inserted into the positioning guide counter bore (2.1) to realize positioning assembly between the bottom check valve assembly (1) and the outer oil storage cylinder assembly (2).
2. The internal part positioning structure of the hydraulic shock absorber as claimed in claim 1, wherein the central truncated cone (1.5) and the positioning guide boss (1.6) are coaxial, and the axis of the positioning guide counter bore (2.1) is coincident with the axis of the outer oil storage cylinder assembly (2).
3. The hydraulic shock absorber internal part positioning structure according to claim 1, wherein the internal cylinder body (3) and the central circular truncated cone (1.5) are in interference fit.
4. The hydraulic shock absorber internal part positioning structure according to claim 1, wherein the positioning guide boss (1.6) and the positioning guide counter bore (2.1) are in clearance fit.
5. The internal part positioning structure of a hydraulic shock absorber according to any one of claims 1-4, wherein the bottom check valve assembly (1) comprises a valve body (1.4), and the central boss (1.5) is provided on the valve body (1.4).
6. The internal part positioning structure of the hydraulic shock absorber according to claim 5, wherein the bottom check valve assembly (1) further comprises a check valve screw cap (1.1), and the check valve screw cap (1.1) is fixed on the valve body (1.4) through a bolt; the positioning guide boss (1.6) is a protruding structure on the valve body (1.4), or the positioning guide boss (1.6) is a part of the bolt protruding out of the valve body (1.4).
7. The internal part positioning structure of a hydraulic shock absorber according to any one of claims 1-4, wherein the outer oil cylinder assembly (2) comprises a cylinder (2.2) and a chassis (2.3), the cylinder (2.2) is arranged on the chassis (2.3), and the positioning guide counter bore (2.1) is arranged on the chassis (2.3).
8. The hydraulic shock absorber internal part positioning structure according to claim 7, wherein the axis of the cylinder (2.2) coincides with the axis of the positioning guide counterbore (2.1).
9. The internal part positioning structure of a hydraulic shock absorber according to claim 8, wherein the cylinder (2.2) and the chassis (2.3) are welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122930092.1U CN216642928U (en) | 2021-11-26 | 2021-11-26 | Internal part positioning structure of hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122930092.1U CN216642928U (en) | 2021-11-26 | 2021-11-26 | Internal part positioning structure of hydraulic shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216642928U true CN216642928U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122930092.1U Active CN216642928U (en) | 2021-11-26 | 2021-11-26 | Internal part positioning structure of hydraulic shock absorber |
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| Country | Link |
|---|---|
| CN (1) | CN216642928U (en) |
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2021
- 2021-11-26 CN CN202122930092.1U patent/CN216642928U/en active Active
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