CN210712396U - Special passive form emery wheel of polishing of high-speed car of polishing - Google Patents
Special passive form emery wheel of polishing of high-speed car of polishing Download PDFInfo
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- CN210712396U CN210712396U CN201921229264.9U CN201921229264U CN210712396U CN 210712396 U CN210712396 U CN 210712396U CN 201921229264 U CN201921229264 U CN 201921229264U CN 210712396 U CN210712396 U CN 210712396U
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Abstract
The utility model discloses a special passive form emery wheel of polishing of high-speed sanding vehicle, including friction body, bearing steel bushing, deep groove bearing and dabber, wherein set up spiral slot and keyway on the bearing steel bushing, in friction body embedding spiral slot and the keyway. Aiming at the defects that the grinding wheel friction body is not firmly combined with the bearing steel sleeve and is easy to separate, the utility model provides a bearing steel sleeve which can be firmly combined with the grinding wheel friction body, the bearing steel sleeve adopts the design of a unique spiral groove and an even distribution key groove, so that the grinding wheel friction body is partially embedded into the spiral groove and the even distribution key groove of the bearing steel sleeve; meanwhile, the spiral direction of the spiral groove is crossed with the key groove, so that resistance is formed by the relative movement of the grinding wheel friction body and the bearing steel sleeve in all directions, and the two can be stably combined together. The utility model discloses in the full life cycle of passive form emery wheel of polishing, the emery wheel friction body can both be in the same place with bearing steel bushing's firm consolidation, and the nothing is not hard up and the obscission.
Description
Technical Field
The utility model relates to a special passive form grinding wheel of high-speed sanding vehicle.
Background
In the long-term use process of the steel rail, diseases, such as various damages and defects of corrugation, cracks, fat edges, peeling and the like, are inevitably generated, the service life of the steel rail and the train running safety are seriously influenced, and the steel rail grinding is an effective and universal means for preventing and repairing the surface defects of the steel rail, inhibiting contact fatigue, improving the wheel-rail relationship, prolonging the service life of the steel rail, and improving the train running stability, safety and passenger comfort level, which is generally accepted at home and abroad at present. In recent years, a foreign advanced high-speed grinding vehicle is introduced into China, and is taken as an important accessory for grinding steel rails, passive grinding wheels are paid attention to, due to the high-speed and heavy-load use environment, the performance requirements on the passive grinding wheels are extremely high, and the phenomenon that a grinding wheel friction body falls off and damages the steel rails often occurs in the actual use process of the domestic passive grinding wheels at present, so that the personal safety of constructors and the train running safety are seriously influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a special passive grinding wheel for a high-speed grinding wagon.
The utility model adopts the technical proposal that: the special passive grinding wheel for the high-speed grinding wagon comprises a friction body, a bearing steel sleeve, a deep groove bearing and a mandrel, wherein a spiral groove and a key groove are formed in the bearing steel sleeve, and the friction body is embedded into the spiral groove and the key groove.
Compared with the prior art, the utility model has the positive effects that:
aiming at the defects that the grinding wheel friction body is not firmly combined with the bearing steel sleeve and is easy to separate, the utility model provides a bearing steel sleeve which can be firmly combined with the grinding wheel friction body, the bearing steel sleeve adopts the design of a unique spiral groove and an even distribution key groove, so that the grinding wheel friction body is partially embedded into the spiral groove and the even distribution key groove of the bearing steel sleeve; meanwhile, the spiral direction of the spiral groove is crossed with the key groove, so that resistance is formed by the relative movement of the grinding wheel friction body and the bearing steel sleeve in all directions, and the two can be stably combined together.
The utility model discloses in the full life cycle of passive form emery wheel of polishing, the emery wheel friction body can both be in the same place with bearing steel bushing's firm consolidation, and the nothing is not hard up and the obscission.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a passive grinding wheel for a high-speed grinding wagon;
FIG. 2 is a structural diagram of a passive grinding wheel dedicated for a high-speed grinding wagon;
FIG. 3 is a high strength bearing steel bushing profile;
FIG. 4 is a structural design drawing of a high-strength bearing steel sleeve;
description of reference numerals: 1. a friction body; 2. a bearing steel sleeve; 21. a spiral groove; 22. a keyway; 23. a mandrel assembly hole; 24. assembling a deep groove bearing; 3. a deep groove bearing; 4. core shaft
Detailed Description
A passive grinding wheel for a high-speed grinding wagon, as shown in fig. 1 and 2, comprising: friction body 1, bearing steel sleeve 2, deep groove bearing 3, mandrel 4, etc.
The structure of the bearing steel sleeve 2 is shown in fig. 3 and 4, and comprises: spiral groove 21, keyway 22, dabber pilot hole 23, deep groove bearing fit position 24 etc. wherein:
the bearing steel sleeve 2 adopts the design of the spiral groove 21, so that the friction body 1 is embedded into the spiral groove 21 to enlarge the contact surface between the friction body 1 and the bearing steel sleeve 2, an embedded structure is formed, and the bearing steel sleeve 2 cannot move in the direction vertical to the end surface of the friction body 1.
The bearing steel sleeve 2 is designed by the key groove 22, so that the friction body 1 is embedded into the key groove 22, and the bearing steel sleeve 2 and the friction body 1 cannot be separated from each other to idle in the process that the friction body 1 rotates at a high speed by taking the mandrel 4 as the center.
The spiral direction of the spiral groove 21 is crossed with the key groove 22, so that resistance is formed on the relative movement of the friction body 1 and the bearing steel sleeve 2 in all directions, and the two can be stably combined together.
The bearings at the two ends of the bearing steel sleeve 2 adopt high-speed and high-temperature-resistant deep groove bearings 3, and the deep groove bearings 3 and the bearing steel sleeve 2 are assembled in an interference fit mode so as to ensure that the bearings do not fall off in a high-speed rotating state.
The mandrel 4 is quenched by high-strength carbon steel, so that the mandrel can bear the pressure applied by a polishing device of a high-speed polishing vehicle, and the phenomena of bending and fracture cannot occur. The mandrel 4 passes through the center of the deep groove bearing 3, and the mandrel and the deep groove bearing are in transition fit.
The friction body 1 is made of a material formed by mixing an abrasive binding agent and a filler, the mixed material is put into a die to coat the bearing steel sleeve 2, the pressure molding is carried out, the binding agent is heated and melted to be fully contacted with the surface of the bearing steel sleeve 2, the material of the friction body 1 is embedded into the spiral groove 21 and the key groove 22 of the bearing steel sleeve 2, and the friction body 1 and the bearing steel sleeve 2 form a firm bonding structure after the binding agent is solidified at high temperature.
Claims (8)
1. The utility model provides a special passive form emery wheel of polishing of high-speed sanding vehicle which characterized in that: the friction body is embedded into the spiral groove and the key groove.
2. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: the spiral direction of the spiral groove is crossed with the key groove.
3. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: and the deep groove bearing and the bearing steel sleeve are assembled in an interference fit mode.
4. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: the mandrel penetrates through the center of the deep groove bearing, and the mandrel and the deep groove bearing are in transition fit.
5. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: the friction body is made of a material formed by mixing an abrasive bonding agent and a filler.
6. The special passive grinding wheel for the high-speed grinding wagon of claim 5, wherein: the friction body is coated and partially embedded into the spiral groove and the key groove of the bearing steel sleeve, and a bonding structure is formed through high-temperature curing.
7. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: the deep groove bearing is a high-temperature-resistant deep groove bearing.
8. The special passive grinding wheel for the high-speed grinding wagon of claim 1, wherein: the mandrel is made of high-strength carbon steel through quenching treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921229264.9U CN210712396U (en) | 2019-07-31 | 2019-07-31 | Special passive form emery wheel of polishing of high-speed car of polishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921229264.9U CN210712396U (en) | 2019-07-31 | 2019-07-31 | Special passive form emery wheel of polishing of high-speed car of polishing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210712396U true CN210712396U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921229264.9U Active CN210712396U (en) | 2019-07-31 | 2019-07-31 | Special passive form emery wheel of polishing of high-speed car of polishing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210712396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816356A (en) * | 2021-01-18 | 2021-05-18 | 中铁隆昌铁路器材有限公司 | Grinding performance test device for quick grinding wheel |
-
2019
- 2019-07-31 CN CN201921229264.9U patent/CN210712396U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816356A (en) * | 2021-01-18 | 2021-05-18 | 中铁隆昌铁路器材有限公司 | Grinding performance test device for quick grinding wheel |
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