CN209833634U

CN209833634U - Central pin bush for railway vehicle bogie traction device

Info

Publication number: CN209833634U
Application number: CN201920578201.8U
Authority: CN
Inventors: 单建波; 周志远; 吴让军; 路惠强; 芮于杰; 石安
Original assignee: LIYANG ZHENGDA EQUIPMENT OF RAILWAY CO Ltd
Current assignee: LIYANG ZHENGDA EQUIPMENT OF RAILWAY CO Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2019-12-24
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a railway vehicle bogie is center pin bushing for draw gear, including overcoat, dabber, rubber layer, the dabber about overcoat central symmetry, the both sides of dabber are equipped with the rubber layer, dabber, rubber layer with the overcoat vulcanizes and connects, the outside of dabber is equipped with a plurality of opening recesses, fill up rubber in the opening recess, the both ends of dabber are equipped with first axial opening and second axial opening respectively, first axial opening and second axial opening are linked together, the rubber profile has all been seted up at the both ends on rubber layer, first axial opening is the round platform shape, second axial opening is cylindrical, first axial open-ended inner circle conical cone angle is greater than conical surface auto-lock angle, the both ends of dabber are outstanding the both ends outside and the outstanding length of overcoat equal. The central pin bush has the advantages that the central shaft structure is additionally provided with the grooves, the structure of the rubber molded surface is changed, and the torsional rigidity of the central pin bush is effectively improved.

Description

Central pin bush for railway vehicle bogie traction device

Technical Field

The utility model relates to a railway transportation vehicle accessory field particularly, relates to a central key bush for railway vehicle bogie draw gear.

Background

The central pin bush is formed by vulcanizing an inner steel bush, an outer steel bush and rubber, the central pin bush is extruded, gaps among the central pin, the central pin bush and the traction beam are eliminated, gapless traction is realized, and rubber deformation of the central pin bush can meet relative rotation between a vehicle body and a bogie, so that abrasion is eliminated. During the running process of the railway vehicle, when the vehicle is started and braked, longitudinal force and torsional force exist between the vehicle body and the bogie, and the central pin bush mainly plays a role in transmitting the longitudinal force and the torsional force between the vehicle body and the bogie so as to improve the vibration performance and the comfort of the vehicle. However, the central pin bush with the existing structure has low torsional rigidity, and cannot play a good role in flexible support when large torsional force exists between a vehicle body and a bogie, so that the central pin bush with a novel structure needs to be developed to solve the problems.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a central pin bush is used to railway vehicle bogie draw gear to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the central pin bush comprises an outer sleeve, a mandrel and a rubber layer, wherein the mandrel is symmetrical about the center of the outer sleeve, the rubber layer is arranged on two sides of the mandrel, the mandrel and the rubber layer are connected with the outer sleeve in a vulcanization mode, a plurality of opening grooves are formed in the outer side of the mandrel, rubber is filled in the opening grooves, a first axial opening and a second axial opening are formed in two ends of the mandrel respectively, the first axial opening and the second axial opening are communicated, and rubber forming surfaces are formed in two ends of the rubber layer.

Furthermore, the first axial opening is in a cone shape, the second axial opening is in a cylinder shape, and the cone angle of the inner cone of the first axial opening is larger than the cone self-locking angle.

Furthermore, two ends of the mandrel protrude to the outer sides of two ends of the outer sleeve, and protruding lengths of the two ends of the mandrel are equal.

Furthermore, the cross section of the rubber molding surface is in an elliptical arc shape, and the outer sleeve and the mandrel are made of steel materials.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model provides a pair of central pin bush's dabber structure has increased a plurality of recesses, has changed the structure of rubber profile, the effectual torsional rigidity who increases central pin bush.

(2) The utility model discloses a set up first axial opening and second axial opening and first axial open-ended inner circle conical surface cone angle at the dabber and be greater than the conical surface from the lock angle and be favorable to reducing the degree of difficulty of disassembling of core pin and central pin bushing.

(3) The utility model discloses a set up the rigidity that the rubber profiled surface has effectively reduced the rubber layer at the both ends on rubber layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a center pin bush for a railway vehicle bogie traction device according to an embodiment of the present invention.

Reference numerals:

1. a jacket; 2. a mandrel; 3. a rubber layer; 4. opening the groove; 5. a first axial opening; 6. a rubber molding surface; 7. the second axial direction is provided with a hole.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1, according to the embodiment of the present invention, a center pin bush for a traction device of a railway vehicle bogie includes an outer sleeve 1, a mandrel 2 and a rubber layer 3, wherein the mandrel 2 is symmetrical about the center of the outer sleeve 1, the two sides of the mandrel 2 are provided with the rubber layer 3, the mandrel 2 and the rubber layer 3 are connected with the outer sleeve 1 through vulcanization, the outer side of the mandrel 2 is provided with a plurality of open grooves 4, the open grooves 4 are filled with rubber, the two ends of the mandrel 2 are respectively provided with a first axial opening 5 and a second axial opening 7, the first axial opening 5 and the second axial opening 7 are communicated, and the two ends of the rubber layer 3 are both provided with rubber forming surfaces 6.

Through the above technical scheme of the utility model, primary shaft opening 5 is the round platform shape, secondary shaft opening 7 is cylindrical, primary shaft opening 5's inner circle conical cone angle is greater than the conical surface and is favorable to reducing the difficulty of disassembling of core pin and center pin cover from the lock angle, 2 the both ends of dabber are outstanding the both ends outside and the outstanding length of overcoat 1 equal, the cross-section of rubber profile 6 has effectively reduced the rigidity on rubber layer for oval arc, overcoat 1 is steel material with dabber 2.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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

1. The utility model provides a railway vehicle bogie is center pin bushing for draw gear, its characterized in that, includes overcoat (1), dabber (2), rubber layer (3), dabber (2) about overcoat (1) central symmetry, the both sides of dabber (2) are equipped with rubber layer (3), dabber (2), rubber layer (3) with overcoat (1) vulcanize and connect, the outside of dabber (2) is equipped with a plurality of open groove (4), fill up rubber in open groove (4), first axial opening (5) and second axial opening (7) have been seted up respectively to the both ends of dabber (2), first axial opening (5) and second axial opening (7) are linked together, rubber profiled surface (6) have all been seted up at the both ends of rubber layer (3).

2. A king pin bushing for a railway car truck draft gear according to claim 1, wherein said first axial opening (5) is frustoconical and said second axial opening (7) is cylindrical, the cone angle of the inner cone of said first axial opening (5) being greater than the cone self-locking angle.

3. A center pin bushing for a railway vehicle bogie traction device according to claim 1, wherein both ends of the mandrel (2) protrude outside both ends of the outer sleeve (1) by an equal length.

4. The center pin bush for a railway vehicle bogie traction apparatus according to claim 1, wherein the cross section of the rubber forming surface (6) is an elliptical arc, and the outer sleeve (1) and the mandrel (2) are both made of steel.