CN214728811U - Radial and axial precompression limiting rotating arm node device - Google Patents
Radial and axial precompression limiting rotating arm node device Download PDFInfo
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- CN214728811U CN214728811U CN202120634831.XU CN202120634831U CN214728811U CN 214728811 U CN214728811 U CN 214728811U CN 202120634831 U CN202120634831 U CN 202120634831U CN 214728811 U CN214728811 U CN 214728811U
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Abstract
The utility model discloses a spacing rocking arm node means of radial axial precompression mainly includes: rocking arm node overcoat, dabber and overload protection device, wherein the coaxial setting of overload protection device is in the dabber periphery, and coaxial setting is in rocking arm node overcoat internal week, and overload protection device includes two vulcanization body assembly and second rubber body, and vulcanization body assembly includes first rocking arm node endotheca, first rubber body and second rocking arm node endotheca, and first rubber body sets up between first rocking arm node endotheca and second rocking arm node endotheca. An overload protection device is arranged on the mandrel to prevent the node structure of the rotating arm from being damaged; the elastic retainer ring can effectively prevent the rotating arm node from axially moving and reduce abrasion; the radial and axial bidirectional precompression is realized by using the vulcanizing body assembly, and the fatigue resistance of the product is improved; the matched use of the inner sleeve and the outer sleeve of the pivot arm node of the axle box limits the radial displacement of the pivot arm node and prevents the rubber body from being damaged due to overlarge displacement.
Description
Technical Field
The utility model relates to a rail vehicle shock attenuation technical field, in particular to spacing rocking arm node means of radial axial precompression.
Background
The pivot arm node of the axle box, also called axle box positioning node, is generally installed in the pivot arm of a series of suspension parts, one end of the positioning pivot arm is fixedly connected with the cylindrical axle box body, and the other end is connected with a mounting seat welded on a framework through the pivot arm node made of rubber elasticity. The prior art includes the use of a swivel arm node structure with two sections of conical inner bores, the change of the rigidity performance by changing the size of the rubber profile and the diameter of the inner and outer sleeves, and the realization of the precompression of the elastic rubber body by adjusting the axial position of the inner and outer sleeves.
The conventional axle box rotating arm node is easy to have the phenomena of overlarge longitudinal rigidity and deflection rigidity, degumming, iron part dislocation and the like under the normal working state, so that the rubber body of the axle box rotating arm node is subjected to fatigue damage, and the service life of a product is seriously influenced.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
In order to overcome at least one defect of the prior art, the overload protection device is arranged on the mandrel, so that the node structure of the rotating arm is prevented from being damaged; the elastic retainer ring can effectively prevent the rotating arm node from axially moving, so that the abrasion is reduced; the radial and axial bidirectional precompression is realized by using the vulcanizing body assembly, so that the fatigue resistance of the product is improved; the collocation of overcoat has restricted rocking arm node radial displacement in axle box rocking arm node, prevents that the displacement from too big arousing the rubber body to destroy, the utility model discloses a following technical scheme.
(II) technical scheme
As a first aspect of the utility model, the utility model discloses a spacing rocking arm node means of radial axial precompression, include:
the overload protection device is coaxially arranged on the periphery of the mandrel, is coaxially arranged on the inner periphery of the rotating arm node outer sleeve and is in interference fit with the rotating arm node outer sleeve;
the overload protection device comprises two vulcanizing body assemblies and a second rubber body, and the vulcanizing body assemblies and the second rubber body are simultaneously and coaxially arranged on the periphery of the mandrel;
the vulcanization body assembly comprises a first rotating arm node inner sleeve, a first rubber body and a second rotating arm node inner sleeve, wherein the first rubber body is arranged between the first rotating arm node inner sleeve and the second rotating arm node inner sleeve.
In a possible embodiment, the swivel arm node device further comprises a circlip, which is coaxially arranged on the outer circumference of the mandrel for axial limitation.
In a possible embodiment, the two vulcanized body assemblies are symmetrically arranged at two ends of the second rubber body.
In a possible embodiment, the second rubber body is provided in the shape of a ring for damping axial forces to which the boom point is subjected.
In a possible implementation manner, one end of the first rotating arm node inner sleeve is provided with a first mounting groove, the first mounting groove comprises a dovetail groove and a straight groove, and the dovetail groove is used for mounting the first rubber body.
In a possible implementation manner, the first rubber body is in an annular circular truncated cone shape, and a compression groove is formed in the inner wall of the first rubber body and used for fixing the first rubber body.
In a possible embodiment, the second rotating arm node inner sleeve is in a circular truncated cone shape, and one end of the second rotating arm node inner sleeve is provided with a compression ring, and the compression ring is installed in the compression groove.
In a possible embodiment, the spindle is designed as a stepped shaft, preventing damage to the knuckle arrangement due to excessive axial loads.
In a possible embodiment, a second mounting groove is provided on the mandrel, and the second mounting groove is used for mounting the elastic check ring.
In one possible embodiment, the mandrel is provided as a one-piece forging.
(III) advantageous effects
The utility model discloses a spacing rocking arm node means of radial axial precompression and installation method has following beneficial effect:
1. the two vulcanizing body assemblies are symmetrically arranged at two ends of the second rubber body respectively, and the first rubber body is arranged between the first rotating arm node inner sleeve and the second rotating arm node inner sleeve, so that radial and axial bidirectional pre-compression is realized, the fatigue resistance of a product is improved, and the rotating arm node structure is prevented from being damaged.
2. The second rubber body is arranged between the two vulcanizing body assemblies, and further enables the rotating arm node to play a role in buffering when the rotating arm node is axially excited.
3. The elastic retainer ring can effectively prevent the rotating arm node from axially moving, so that abrasion is reduced.
4. The matched use of the inner sleeve and the outer sleeve of the pivot arm node of the axle box limits the radial displacement of the pivot arm node and prevents the rubber body from being damaged due to overlarge displacement.
5. The mandrel is an integral forging part, a stepped shaft structure is adopted, damage to the structure due to overlarge axial load is prevented, and overload protection is formed on a rotating arm node.
6. The precompression of the first rubber body of the pivot arm node of the axle box is realized through the relative positions of the first pivot arm node inner sleeve and the second pivot arm node inner sleeve, so that the first rubber body forms a radial and axial precompression structure, and a circular truncated cone structure is arranged in the structure and has a certain inclination, so that the axial or radial load borne by the pivot arm node can be decomposed, and the structural strength of the pivot arm node is improved.
Drawings
The embodiments described below with reference to the drawings are exemplary and intended to explain and illustrate the invention and should not be interpreted as limiting the scope of the invention.
Fig. 1 is a schematic three-dimensional structure diagram of a radial and axial precompression limiting rotating arm node device disclosed by the present invention;
fig. 2 is a cross-sectional view of a radial and axial precompression limiting rocker arm node device of the present disclosure;
fig. 3 is a cross-sectional view of a first boom node inner sleeve of the present disclosure;
FIG. 4 is a cross-sectional view of a first rubber body of the present disclosure;
fig. 5 is a cross-sectional view of the second rotating arm node inner sleeve disclosed in the present invention.
Reference numerals:
100. a node outer sleeve of the rotating arm; 200. a mandrel; 300. an overload protection device; 310. a vulcanized body assembly; 311. a first boom node inner sleeve; 3110. a first mounting groove; 312. a first rubber body; 3120. a compression groove; 313. a second rotating arm node inner sleeve; 3130. a compression ring; 320. a second rubber body; 400. a circlip is provided.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.
It should be noted that: in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are some embodiments of the present invention, not all embodiments, and features in embodiments and embodiments in the present application may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.
A first embodiment of a radial and axial precompression limiting tumbler node arrangement of the present disclosure is described in detail below with reference to fig. 1-5. The embodiment is mainly applied to the shock absorption of the railway vehicle, and the overload protection device is arranged on the mandrel to prevent the node structure of the rotating arm from being damaged; the elastic retainer ring can effectively prevent the rotating arm node from axially moving, so that the abrasion is reduced; the radial and axial bidirectional precompression is realized by using the vulcanizing body assembly, so that the fatigue resistance of the product is improved; the matched use of the inner sleeve and the outer sleeve of the pivot arm node of the axle box limits the radial displacement of the pivot arm node and prevents the rubber body from being damaged due to overlarge displacement.
As shown in fig. 1-2, the present embodiment mainly includes a boom node outer casing 100, a mandrel 200 and an overload protection device 300, the overload protection device 300 is mounted on the mandrel 200 to form a new assembly, and the new assembly is assembled with the boom node outer casing 100 in an interference fit manner by means of press fitting, so as to prevent the boom node structure from being damaged.
Wherein, a cavity is arranged on one end surface of the cylindrical rotating arm node outer sleeve 100, and the cavity penetrates through the rotating arm node outer sleeve 100 and is used for installing a new combination body consisting of the overload protection device 300 and the mandrel 200. Overload protection device 300 is coaxial setting on dabber 200 periphery, and coaxial setting is on rocking arm node overcoat 100 inner periphery, with rocking arm node overcoat 100 interference fit.
The overload protection device 300 comprises two vulcanized body assemblies 310 and a second rubber body 320, the vulcanized body assemblies 310 and the second rubber body 320 are simultaneously and coaxially arranged on the periphery of the mandrel 200, the second rubber body 320 is sleeved at the middle part of the mandrel 200, the two vulcanized body assemblies 310 are sleeved on the mandrel 200 and are symmetrically arranged at two ends of the second rubber body 320 respectively, the vulcanized body assemblies 310 realize radial and axial bidirectional pre-compression of rotating arm nodes, and further the fatigue resistance of products is improved.
The vulcanizing body assembly 310 comprises a first rotating arm node inner sleeve 311, a first rubber body 312 and a second rotating arm node inner sleeve 313, wherein the first rubber body 312 is arranged between the first rotating arm node inner sleeve 311 and the second rotating arm node inner sleeve 313, the first rotating arm node inner sleeve 311 and the second rotating arm node inner sleeve 313 are matched for use, a space is reserved in the middle for installing the first rubber body 312, and the vulcanizing body assembly 310 is formed by vulcanizing rubber bodies. Precompression of the axle box boom node first rubber body 312 is achieved by the relative positions of the first boom node inner sleeve 311 and the second boom node inner sleeve 313 so that the first rubber body 312 forms a radially and axially precompressed structure.
In one embodiment, the swivel arm node arrangement further comprises a circlip 400, the circlip 400 being coaxially arranged on the outer circumference of the spindle 200 for axial limitation.
In one embodiment, a second mounting groove is provided on the mandrel 200 for mounting the circlip 400.
After the mandrel 200 and the overload protection device 300 are installed in the rotating arm node outer sleeve 100, two installation grooves are respectively formed in two ends of the mandrel 200, and one elastic check ring 400 is installed in each second installation groove, so that one end face of the elastic check ring 400 is attached to one end face of the vulcanized body assembly 310, the overload protection device 300 is axially limited, axial movement of the rotating arm node of the axle box in the operation process is prevented, and the overall structural performance of the rotating arm node of the axle box is further improved.
In one embodiment, the mandrel 200 is configured as a stepped shaft to prevent damage to the knuckle arrangement due to excessive axial loads.
The mandrel 200 can be set as an integral forging piece, a stepped shaft structure is adopted, damage to a knot structure due to excessive axial load is prevented, overload protection is formed on a knuckle node, the mandrel 200 is set as three sections, the three sections comprise a second installation section for installing a second rubber body 320 and a first installation section and a third installation section for installing two vulcanized body combination bodies 310, and the diameter of the first installation section is the same as that of the third installation section and is smaller than that of the second installation section.
In one embodiment, the second rubber body 320 is configured in a ring shape to absorb the axial force applied to the pivot arm node, and the second rubber body 320 is mounted on the second mounting section and the two vulcanized body assemblies 310 are respectively mounted on the first mounting section and the third mounting section, such that the vulcanized body assemblies 310 are closely attached to the adjacent surfaces of the second rubber body 320, thereby forming a new assembly. Wherein the second rubber body 320 further cushions the boom node when it is axially excited.
As shown in fig. 3, in one embodiment, one end of the first pivot arm node inner sleeve 311 is provided with a first mounting groove 3110, and the first mounting groove 3110 includes a dovetail groove for mounting the first rubber body 312 and a straight groove.
The first rotating arm node inner sleeve 311 is cylindrical, a dovetail groove is formed in the inner circumferential direction of the first rotating arm node inner sleeve 311, the section of the dovetail groove inclines from outside to inside along the diameter direction of the mandrel 200, the inclined surface can enable axial or radial load borne by the rotating arm node to be decomposed, structural strength of the rotating arm node is improved, the first rubber body 312 is installed in the groove, the first rubber body 312 is axially limited, and the first rubber body 312 is prevented from being separated from the first rotating arm node inner sleeve 311. The straight slot in the first mounting slot 3110 is used for mounting the second boom node inner housing 313 such that the end surface of the second boom node inner housing 313 is flush with the end surface of the first boom node inner housing 311 when the second boom node inner housing 313 is mounted on the first boom node inner housing 311.
As shown in fig. 4, in one embodiment, the first rubber 312 is in the shape of an annular truncated cone, and the inclination angle of the truncated cone is the same as the inclination angle of the dovetail groove in the first inner pivot-arm joint sleeve 311, so that the first rubber 312 is installed in the first inner pivot-arm joint sleeve 311, and the outer peripheral arm of the first rubber 312 is tightly attached to the inner peripheral arm of the dovetail groove. The inner wall of the first rubber body 312 is provided with a compression groove 3120, the compression groove 3120 is annular, and the cross section is inclined from outside to inside along the diameter direction of the mandrel 200, so as to fix the first rubber body 312.
As shown in fig. 5, in one embodiment, the second boom node inner sleeve 313 has a circular truncated cone shape having an outer circumferential annular inclined plane inclined at the same angle as the inner circumferential arm of the compression groove 3120, a compression ring 3130 is provided at one end of the second boom node inner sleeve 313, the compression ring 3130 is fixedly provided at one end of the second boom node inner sleeve 313, the compression ring 3130 has a horn shape, one end surface having a smaller diameter is fixedly connected to an end surface of the second boom node inner sleeve 313, the compression ring 3130 is installed in the compression groove 3120, and the first rubber member 312 is fixed to the first boom node inner sleeve 311.
The first rubber 312 is fixedly installed between the first and second boom node inner sleeves 311 and 313 by the relative position of the first mounting groove 3110 provided on the first boom node inner sleeve 311 and the compression ring 3130 provided on the second boom node inner sleeve 313, so that the pre-compression of the first rubber 312 of the boom node of the axle box is realized, and the first rubber 312 forms a pre-compression structure in the radial and axial directions. The structure has the advantages that the inclined plane structure has a certain inclination, so that the axial or radial load borne by the rotating arm node can be decomposed, and the structural strength of the rotating arm node is improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A radial and axial precompression limiting tumbler node device, comprising: the overload protection device comprises a rotating arm node outer sleeve (100), a mandrel (200) and an overload protection device (300), wherein the overload protection device (300) is coaxially arranged on the periphery of the mandrel (200), is coaxially arranged on the inner periphery of the rotating arm node outer sleeve (100), and is in interference fit with the rotating arm node outer sleeve (100);
the overload protection device (300) comprises two vulcanized body combination bodies (310) and a second rubber body (320), wherein the vulcanized body combination bodies (310) and the second rubber body (320) are simultaneously and coaxially arranged on the periphery of the mandrel (200);
the vulcanizing body assembly (310) comprises a first rotating arm node inner sleeve (311), a first rubber body (312) and a second rotating arm node inner sleeve (313), wherein the first rubber body (312) is arranged between the first rotating arm node inner sleeve (311) and the second rotating arm node inner sleeve (313).
2. A radial and axial precompression limiting tumbler node device according to claim 1, characterized in that it further comprises a circlip (400), said circlip (400) being coaxially arranged on the outer circumference of the mandrel (200) for axial limiting.
3. A radially and axially precompression limiting tumbler node device according to claim 1, characterized in that said two vulcanizing body assemblies (310) are symmetrically arranged at both ends of said second rubber body (320).
4. A radial and axial precompression limiting tumbler node device according to claim 1, characterized in that the second rubber body (320) is arranged in a ring shape for damping axial forces experienced by the tumbler node.
5. A radial and axial precompression limiting tumbler node device according to claim 1, characterized in that one end of the first tumbler node inner sleeve (311) is provided with a first mounting groove (3110), and the first mounting groove (3110) comprises a dovetail groove for mounting the first rubber body (312) and a straight groove.
6. The radial and axial precompression limiting tumbler node device as claimed in claim 1, characterized in that the first rubber body (312) is in the shape of an annular truncated cone, and a compression groove (3120) is provided on the inner wall of the first rubber body (312) for fixing the first rubber body (312).
7. A radial and axial precompression limiting tumbler node device as claimed in claim 6, characterized in that the second tumbler node inner sleeve (313) is frustoconical and one end of the second tumbler node inner sleeve (313) is provided with a compression ring (3130), the compression ring (3130) being mounted in the compression groove (3120).
8. A radially and axially precompressed limiting tumbler node means according to claim 1, characterized in that said spindle (200) is configured as a stepped spindle, preventing damage to the tumbler node means due to excessive axial loads.
9. A radial and axial precompression limiting tumbler node device according to claim 2, characterized in that said mandrel (200) is provided with a second mounting groove for mounting a circlip (400).
10. A radial and axial precompression limiting tumbler node device as claimed in any of claims 8 to 9, wherein the mandrel is provided as a unitary forging.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120634831.XU CN214728811U (en) | 2021-03-25 | 2021-03-25 | Radial and axial precompression limiting rotating arm node device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120634831.XU CN214728811U (en) | 2021-03-25 | 2021-03-25 | Radial and axial precompression limiting rotating arm node device |
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| CN214728811U true CN214728811U (en) | 2021-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874564A (en) * | 2021-03-25 | 2021-06-01 | 中国铁道科学研究院集团有限公司铁道科学技术研究发展中心 | Radial and axial precompression limiting rotating arm node device and installation method |
-
2021
- 2021-03-25 CN CN202120634831.XU patent/CN214728811U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874564A (en) * | 2021-03-25 | 2021-06-01 | 中国铁道科学研究院集团有限公司铁道科学技术研究发展中心 | Radial and axial precompression limiting rotating arm node device and installation method |
| CN112874564B (en) * | 2021-03-25 | 2024-06-21 | 中国铁道科学研究院集团有限公司铁道科学技术研究发展中心 | Radial axial precompression limiting rotating arm node device and mounting method |
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