CN220890884U - High-speed train braking device - Google Patents
High-speed train braking device Download PDFInfo
- Publication number
- CN220890884U CN220890884U CN202322947730.XU CN202322947730U CN220890884U CN 220890884 U CN220890884 U CN 220890884U CN 202322947730 U CN202322947730 U CN 202322947730U CN 220890884 U CN220890884 U CN 220890884U
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- Prior art keywords
- friction block
- back plate
- positioning
- speed train
- block body
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- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 241000357293 Leptobrama muelleri Species 0.000 abstract description 42
- 238000000034 method Methods 0.000 abstract description 10
- 238000002955 isolation Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The utility model relates to the technical field of train braking, in particular to a high-speed train braking device, which comprises: the friction block body and the backboard are connected through rivets; the friction block steel back is arranged between the friction block body and the back plate, at least one positioning convex point is arranged on one surface of the friction block steel back facing the back plate, positioning counter bores are arranged on one surface of the back plate facing the friction block steel back, and the positioning convex points are arranged in one-to-one correspondence with the positioning counter bores. The positioning convex points are processed on the steel back of the friction block, and the positioning counter bores are processed at the corresponding positions of the back plate, so that the positioning convex points are matched into the positioning counter bores, the rotation trend of the friction block body can be effectively restrained, the vibration impact of the friction block body in the braking working process is converted into the impact of the positioning convex points on the steel back of the friction block and the positioning counter bores on the back plate, and the falling of the friction block caused by the fatigue fracture of the rivet due to the direct collision of the rivet and the inner wall of the rivet hole on the back plate is avoided.
Description
Technical Field
The utility model relates to the technical field of train braking, in particular to a high-speed train braking device.
Background
With the continuous development of China high-speed railways, people have increasingly greater demands on high-speed rail travel, so that higher demands are made on the braking safety performance of high-speed rail trains. At present, the parking brake in the running process of the high-speed train is realized by converting kinetic energy into heat energy to be consumed by virtue of friction between a brake pad and a brake disc. In a braking system, a braking sheet belongs to one of key parts, and is directly contacted with a braking disc for friction, so that the requirement on safety performance is high. The brake pad is installed on the brake pad support and is connected with the braking system, and the brake pad support applies pressure to the brake pad to the brake disc for mutual friction braking during braking.
The high-speed rail train is driven along the steel rail by the wheels in the running process, the brake pad is always in a severe vibration state in the brake pad support, and meanwhile, the brake pad can bear high-temperature, high-pressure and high-frequency braking force impact under the action of friction force in the braking process.
The brake pad of the high-speed train widely used at present mainly comprises parts such as a friction block, rivets, a back plate, a separation gasket and the like, wherein the friction block is riveted after passing through a steel back hole of the friction block, a central hole of the separation gasket and a stepped hole of the back plate through the rivets, so that the floating of the friction block is realized, and the friction block and the back plate form an integral brake pad. However, in the actual use process, the rivet frequently suffers from the action of braking friction force for a long time, and under the vibration impact action of shearing force and thermal load on the rivet, the rivet is easy to generate fatigue fracture, so that a friction block falls off, and the operation safety of a high-speed train is influenced.
Disclosure of utility model
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the rivets on the brake pad of the high-speed train in the prior art are easy to generate fatigue fracture and have potential safety hazards, so as to provide the high-speed train braking device.
In order to solve the technical problem, the present utility model provides a high-speed train braking device, comprising:
the friction block comprises a friction block body and a back plate which are arranged in a stacked manner, wherein the friction block body is connected with the back plate through rivets;
the friction block steel back is installed between the friction block body and the back plate, at least one positioning convex point is arranged on one surface of the friction block steel back facing the back plate, positioning counter bores are arranged on one surface of the back plate facing the friction block steel back, and the positioning convex points are installed in one-to-one correspondence with the positioning counter bores.
Optionally, an isolation gasket is installed between the friction block steel back and the backboard.
Optionally, the isolation gasket is movably arranged between the friction block steel back and the backboard.
Optionally, a plurality of positioning protruding points are arranged around the rivet at intervals along the circumferential direction.
Optionally, an auxiliary counter bore is formed in one face of the friction block steel back, which faces the friction block body, an auxiliary protrusion is formed in one face of the friction block body, which faces the friction block steel back, and the auxiliary protrusions are arranged in one-to-one correspondence with the auxiliary counter bores.
Optionally, the friction block body, the friction block steel back and the rivet are coaxially arranged.
Optionally, the cross section of the positioning convex point is round.
The technical scheme of the utility model has the following advantages:
1. The utility model provides a high-speed train braking device, comprising: the friction block body and the backboard are connected through rivets; the friction block steel back is arranged between the friction block body and the back plate, at least one positioning convex point is arranged on one surface of the friction block steel back facing the back plate, positioning counter bores are arranged on one surface of the back plate facing the friction block steel back, and the positioning convex points are arranged in one-to-one correspondence with the positioning counter bores.
When the high-speed train braking device is mounted on a train for use, a shearing force and a vibration impact of a thermal load are generated in the high-speed train braking device due to the action of braking friction force when the train is braked. The positioning convex points are processed on the steel back of the friction block, the positioning counter bores are processed at the corresponding positions of the back plate, so that the positioning convex points are matched into the positioning counter bores, the rotation trend of the friction block body can be effectively restrained, the vibration impact of the friction block body in the braking working process is converted into the impact of the positioning convex points on the steel back of the friction block and the positioning counter bores on the back plate, the falling of the friction block caused by the fatigue fracture of the rivet due to the direct collision of the rivet and the inner wall of the rivet hole on the back plate is avoided, and the safety coefficient of the high-speed train braking device in the working process is greatly improved.
2. The utility model provides a high-speed train braking device, wherein a plurality of positioning convex points are arranged around rivets at intervals along the circumferential direction. Through set up the location bump around the rivet along circumference for the location bump can restrict the relative motion between friction block steel backing and backplate around the rivet in the plane that friction block steel backing is located on each direction, protects the rivet in a plurality of directions, and then promotes arresting gear's security performance.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a sectional view of a high-speed train brake apparatus provided in an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a friction block steel backing provided in an embodiment of the present utility model.
Reference numerals illustrate: 1. a friction block body; 2. friction block steel backing; 3. a back plate; 4. a rivet; 5. an isolation spacer; 6. positioning the salient points; 7. positioning the counter bore; 8. an auxiliary protrusion; 9. and (5) assisting in countersinking.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Fig. 1 and 2 show a high-speed train braking device according to the present embodiment, which is used for being installed on a high-speed train as a brake pad. The high-speed train braking device includes: the friction block body 1 is laminated in sequence. The friction block steel back 2 and the backboard 3 are connected through rivets 4, and the friction block body 1, the friction block steel back 2 and the rivets 4 are coaxially arranged. Specifically, the friction block body 1 and the friction block steel back 2 are fixedly connected into an integral structure, and the friction block steel back 2 and the back plate 3 are fixedly connected through rivets.
The friction block steel back 2 is arranged between the friction block body 1 and the backboard 3, at least one positioning convex point 6 is arranged on one surface of the friction block steel back 2 facing the backboard 3, positioning counter bores 7 are arranged on one surface of the backboard 3 facing the friction block steel back 2, and the positioning convex points 6 are arranged in one-to-one correspondence with the positioning counter bores 7. Specifically, the positioning protruding points 6 and the positioning counter bores 7 are circumferentially arranged at intervals around the rivet 4. In this embodiment, the cross section of the positioning bump 6 is circular, and in some other embodiments, the cross section of the positioning bump 6 may be polygonal, curved polygonal, or other shapes.
An isolation gasket 5 is arranged between the friction block steel back 2 and the backboard 3, and the isolation gasket 5 is movably arranged between the friction block steel back 2 and the backboard 3. In this embodiment, the isolation pad 5 is a stainless steel ring-shaped pad, which is used to prevent the friction block steel back from directly contacting with the back plate, and to buffer the vibration of the brake device during operation. Simultaneously, when the braking device works, the friction block body 1 rubs with the brake disc on the axle to realize braking, and when in friction, a large amount of heat can be generated on the friction block body 1, and through the arrangement of the isolation gasket 5, the heat on the friction block body 1 can be smoothly transferred to the backboard 3, so that the heat dissipation area is increased, and the heat dissipation speed of the friction block body 1 can be accelerated. An auxiliary counter bore 9 is formed in one face of the friction block steel back 2, which faces the friction block body 1, an auxiliary protrusion 8 is formed in one face of the friction block body 1, which faces the friction block steel back 2, and the auxiliary protrusions 8 are arranged in one-to-one correspondence with the auxiliary counter bores 9. The auxiliary bulge 8 and the auxiliary counter bore 9 are matched, so that the stability of connection between the friction block body 1 and the friction block steel back 2 can be improved.
The positioning protruding points 6 in the embodiment are formed on the friction block steel back 2 through a stamping process, the punch on the stamping die is arranged on the back surface of the friction block steel back 2, impact force is applied to the punch, the positioning protruding points 6 can be formed on the front surface of the friction block steel back 2, and meanwhile the auxiliary counter bores 9 are formed on the back surface of the friction block steel back 2. In the high-temperature sintering forming process of the friction block body 1 and the friction block steel back 2, the friction block body 1 is softened and filled into the auxiliary counter bore 9 under the high-temperature effect, and the auxiliary bulge 8 is formed on the cooled friction block body 1. After sintering, the friction block body 1 is connected to the friction block steel back 2, the friction block steel back 2 is provided with a positioning convex point 6 protruding upwards, the friction block steel back 2 is in clearance fit in a positioning counter bore 7 on the back plate 3, the friction block steel back 2 is connected to the back plate 3 through a rivet 4, a separation gasket 5 with a buffering effect is arranged between the friction block steel back 2 and the rivet 4, and then a dovetail on the back plate 3 is matched in a dovetail groove of a high-speed rail brake clamp.
When the high-speed train braking device is mounted on a train for use, a shearing force and a vibration impact of a thermal load are generated in the high-speed train braking device due to the action of braking friction force when the train is braked. Through processing location bump 6 on the clutch block steel backing 2, processing out location counter bore 7 in backplate 3 corresponding position, make location bump 6 cooperate in the location counter bore 7, can effectively restrain the rotation trend of clutch block body 1, make the vibration impact of clutch block body 1 in the braking operation process convert into the striking of location bump 6 on the clutch block steel backing 2 and backplate 3 on location counter bore 7, avoided the clutch block that leads to the fact because of the rivet 4 fatigue fracture of rivet 4 with the rivet hole inner wall on backplate 3 drops, improved the factor of safety of high-speed train arresting gear in the course of working greatly.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. A high speed train braking device, comprising:
The friction block comprises a friction block body (1) and a back plate (3) which are arranged in a stacked manner, wherein the friction block body (1) is connected with the back plate (3) through rivets (4);
The friction block steel backing (2) is installed between the friction block body (1) and the backboard (3), one face of the friction block steel backing (2) facing the backboard (3) is provided with at least one positioning convex point (6), one face of the backboard (3) facing the friction block steel backing (2) is provided with a positioning counter bore (7), and the positioning convex points (6) are installed in one-to-one correspondence with the positioning counter bores (7).
2. A high-speed train brake arrangement according to claim 1, characterized in that a spacer (5) is mounted between the friction block steel backing (2) and the back plate (3).
3. A high-speed train brake arrangement according to claim 2, characterized in that the spacer (5) is movably arranged between the friction block steel backing (2) and the back plate (3).
4. A high speed train brake arrangement according to any one of claims 1 to 3, wherein the locating stud (6) is provided in a plurality circumferentially spaced apart relationship about the rivet (4).
5. A high-speed train brake apparatus according to any one of claims 1 to 3, wherein an auxiliary counter bore (9) is provided on a face of the friction block steel backing (2) facing the friction block body (1), an auxiliary protrusion (8) is provided on a face of the friction block body (1) facing the friction block steel backing (2), and the auxiliary protrusions (8) are provided in one-to-one correspondence with the auxiliary counter bores (9).
6. A high-speed train brake arrangement according to any one of claims 1 to 3, characterized in that the friction block body (1), the friction block steel backing (2) and the rivet (4) are coaxially arranged.
7. A high speed train brake arrangement according to any one of claims 1 to 3, wherein the locating stud (6) is circular in cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322947730.XU CN220890884U (en) | 2023-11-01 | 2023-11-01 | High-speed train braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322947730.XU CN220890884U (en) | 2023-11-01 | 2023-11-01 | High-speed train braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890884U true CN220890884U (en) | 2024-05-03 |
Family
ID=90871004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322947730.XU Active CN220890884U (en) | 2023-11-01 | 2023-11-01 | High-speed train braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890884U (en) |
-
2023
- 2023-11-01 CN CN202322947730.XU patent/CN220890884U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |