CN216867377U - Self-adjusting brake pad for motor train unit - Google Patents

Self-adjusting brake pad for motor train unit Download PDF

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Publication number
CN216867377U
CN216867377U CN202220015222.0U CN202220015222U CN216867377U CN 216867377 U CN216867377 U CN 216867377U CN 202220015222 U CN202220015222 U CN 202220015222U CN 216867377 U CN216867377 U CN 216867377U
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friction
brake pad
friction blocks
self
shaft pin
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CN202220015222.0U
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不公告发明人
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Shanghai Lianzong Rail Transit Technology Co ltd
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Shanghai Lianzong Rail Transit Technology Co ltd
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Abstract

The utility model provides a self-adjusting brake pad for a motor train unit, belonging to the technical field of manufacturing; the utility model comprises the following steps: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting holes; each friction block is provided with a shaft pin and is installed on the steel back through the installation hole through the shaft pin; the friction blocks are divided into a plurality of groups, and each group at least comprises one friction block; gaps are reserved between each group of friction blocks and the adjacent group of friction blocks; the friction block is a rectangular friction block; in each group of friction blocks, two adjacent friction blocks are in close contact with each other; and the steel back is also provided with a limiting boss which is used for contacting with the friction block. In the utility model, the friction blocks are arranged in groups and have gaps, so that eccentric wear of the friction blocks can be effectively reduced; and ensures good chip removal, ventilation and heat dissipation effects.

Description

Self-adjusting brake pad for motor train unit
Technical Field
The utility model relates to a brake pad manufacturing technology, in particular to a self-adjusting motor train unit brake pad, and belongs to the technical field of brake pad manufacturing production.
Background
At present, the disc brake system is adopted in the domestic motor train unit train, the huge kinetic energy of the train running is converted into heat energy through the friction between the brake pads and the brake disc, the running speed of the train is slowed down, and the motor train unit train is ensured to complete parking brake within a safe distance. The brake pad is the most critical execution component in the train braking system of the motor train unit, not only requires stable, wear-resisting and high temperature resistant friction coefficient, but also ensures the effective friction area of the brake pad and the brake disc, reduces the phenomena of unstable braking, abnormal wear, edge breakage, block falling and the like caused by eccentric wear, and improves the braking efficiency and the service life of the brake pad.
The powder metallurgy brake pad for the motor train unit in the prior art generally comprises a steel back plate, a dovetail block and a plurality of brake pad friction bodies; the steel back plate and the dovetail block are of an integrated forming structure, any brake pad friction body is fixed on the steel back plate through a large gasket and a rivet, and the large gasket is located between the brake pad friction body and the steel back plate.
Because the friction body is fixedly connected with the steel back plate, the brake pad can not be automatically adjusted during braking, the whole brake pad is easily worn eccentrically, the heat dissipation is poor, and the service life of the brake pad is shortened.
Therefore, it is a technical problem to be solved by those skilled in the art to develop a brake pad capable of continuously and effectively dissipating heat and having good braking performance and service life.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel self-adjusting type motor train unit brake pad, which can effectively remove chips and heat by reasonably arranging friction blocks, and can effectively solve the technical problem of eccentric wear of the friction blocks in the prior art.
The utility model discloses a self-adjusting motor train unit brake pad, which comprises: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting holes; each friction block is provided with a shaft pin, and is installed on the steel back through the shaft pin through the installation hole by a spring buckle;
the friction blocks are divided into a plurality of groups, and each group at least comprises one friction block; gaps are reserved between each group of friction blocks and the adjacent group of friction blocks;
the friction block is a rectangular friction block; in each group of friction blocks, two adjacent friction blocks are in close contact with each other; and the steel back is also provided with a limiting boss which is used for contacting with the friction block.
The self-adjusting motor train unit brake pad is characterized in that the friction block is provided with a back plate, and the shaft pin is arranged on the back plate; and the shaft pin is inserted into the mounting hole so that the back plate is attached to the steel backing.
The self-adjusting motor train unit brake pad is characterized in that the steel back is provided with an arc groove, and each mounting hole is positioned at the bottom of the center of the arc groove; the bearing pin is sleeved with a supporting seat; one side of the supporting seat is provided with an accommodating groove, and the other side of the supporting seat is provided with a spherical surface;
the friction block is in contact with the cambered surface groove through the spherical surface of the supporting seat.
The self-adjusting motor train unit brake pad is characterized in that a disc spring is sleeved on the shaft pin; the disc spring is positioned in the accommodating groove, and two sides of the disc spring are respectively contacted with the supporting seat and the back plate.
The self-adjusting motor train unit brake pad is characterized in that the bottom of the shaft pin is provided with a circular truncated cone, and the circular truncated cone is connected with the back plate; the disc-shaped spring is sleeved on the circular truncated cone.
The self-adjusting brake pad for the motor train unit comprises a disc spring, a back plate and a brake disc, wherein a hard wear-resistant gasket is arranged between the disc spring and the back plate; the hard wear-resistant gasket is sleeved at the bottom of the shaft pin.
The self-adjusting motor train unit brake pad is characterized in that the top end of the shaft pin is provided with an annular clamping groove, and the annular clamping groove is provided with a spring buckle; the friction block is installed on the steel back through the spring buckle.
The self-adjusting motor train unit brake pad is characterized in that the steel backing is provided with two symmetrically arranged steel backs, and each steel back is provided with 9 friction blocks; the friction blocks on each steel backing are divided into four groups, and the number of each group is 1, 2, 3 and 3.
The self-adjusting brake pad for the motor train unit comprises a plurality of friction blocks, wherein the width of a gap between every two adjacent friction blocks is 5-15 mm.
In the brake pad of the utility model, in the braking use process of the train, the friction blocks are arranged in groups and have gaps, so that the eccentric wear of the friction blocks can be effectively reduced; and ensures good chip removal, ventilation and heat dissipation effects.
Drawings
FIG. 1 is an overall schematic view of a self-adjusting motor train unit brake pad according to an embodiment of the utility model;
FIG. 2 is a schematic steel backing diagram of a self-adjusting motor train unit brake pad according to an embodiment of the utility model;
FIG. 3 is a schematic diagram of a friction block of a self-adjusting motor train unit brake pad according to an embodiment of the utility model;
FIG. 4 is a schematic overall sectional structure view of a self-adjusting motor train unit brake pad according to an embodiment of the utility model;
fig. 5 is a partially enlarged view of fig. 4.
Detailed Description
The structure of the self-adjusting motor train unit brake pad is mainly applied to the brake pad for the train.
As shown in fig. 1, and with reference to fig. 2-5; the self-adjusting motor train unit brake pad of the embodiment of the utility model comprises: a steel back 1 and a plurality of friction blocks 2; the steel back 1 is provided with a plurality of mounting holes 10; each friction block 2 is provided with a shaft pin 21, and is mounted on the steel back 1 through the mounting hole 10 by the shaft pin 21; one side of the steel back 1 is a mounting surface, and the other side is provided with a dovetail plate; the dovetail plate is used to mount the entire brake pad on the brake apparatus.
As shown in fig. 1, the friction blocks 2 are divided into a plurality of groups, each group including at least one friction block 2; and a gap is reserved between each group of friction blocks 2 and the adjacent group of friction blocks.
The friction block 2 is a rectangular friction block; in each group of friction blocks, two adjacent friction blocks 2 are in close contact with each other; the steel backing 1 is also provided with a limiting boss 11 which is used for contacting with the friction block 2.
In general, the steel back 1 has two symmetrically arranged blocks, and each steel back 1 is provided with 9 friction blocks; the friction blocks on each steel backing 1 are divided into four groups, and the number of each group is 1, 2, 3 and 3.
Furthermore, the width of the gap between the friction blocks of the adjacent groups is 5-15 mm.
In this embodiment, 18 friction bodies are divided into 8 groups and radially arranged to form a channel with a narrow inner part and a wide outer part, so as to ensure good chip removal, ventilation and heat dissipation effects.
In the self-adjusting brake pad for multiple unit trains of the present embodiment, as shown in fig. 3, the friction block 2 has a back plate 20, and the axle pin 21 is disposed on the back plate 20; the shaft pin 21 is inserted into the mounting hole 10 to make the back plate 20 fit with the steel back 1.
Further, as shown in fig. 4, an arc groove 14 is formed in the steel backing 1, and each mounting hole 10 is located at the central bottom of the arc groove 14; the shaft pin 21 is sleeved with a supporting seat 4; one side of the supporting seat 4 is a containing groove, and the other side is a spherical surface;
as shown in figures 4 and 5, the friction block 2 is contacted with the cambered surface groove 14 through the spherical surface of the support seat 4, so that surface contact is formed between the friction block and the steel back, and the floating effect and the low wear rate are maintained.
Preferably, the shaft pin 21 is further sleeved with a disk spring 3; the disc spring 3 is located in the accommodating groove, and two sides of the disc spring 3 are respectively contacted with the supporting seat 4 and the back plate 20.
In the embodiment, the self-adaptive floating of the friction body is realized by utilizing the spherical matching between the spherical support seat and the steel backing cambered surface groove and the floating structure formed by the disc springs, and the friction body is tightly attached to the surface of the brake disc, so that a good braking effect is achieved. In this embodiment, the spherical supporting seat is subjected to hardening heat treatment, and a hardening protective gasket can be added to protect the surface of the backboard, so that the disc spring is prevented from scratching the surface of the matched part, and the continuous effect of the floating mechanism is ensured.
Further, a circular truncated cone 23 is arranged at the bottom of the shaft pin 21 and is connected with the back plate 20 through the circular truncated cone 23; the disc spring 3 is sleeved on the circular truncated cone 23, so that the position of the disc spring is stable.
In this embodiment, a hard wear-resistant gasket 30 is further disposed between the disc spring 3 and the back plate 20; the hard wear-resistant gasket 30 is sleeved on the bottom of the shaft pin 21 and is generally sleeved on the circular truncated cone 23. Thereby preventing the belleville springs from scratching the backplate 20.
As shown in fig. 5, in the self-adjusting brake pad of the motor train unit according to the embodiment, an annular groove is formed at the top end of the shaft pin 21, and a spring buckle 22 is installed on the annular groove; the friction block 2 is mounted on the mounting hole through the spring buckle 22 to prevent the friction block from falling off from the mounting hole.
In addition, the steel backing and the dovetail plate are of an integrated metal structure. The integrated metal structure of the steel back and the dovetail plate has higher reliability than a riveting structure or a welding structure.
The left steel backing and the left dovetail plate are integrated metal structures which are machined and formed after casting; the right steel backing and the right dovetail plate are integrated metal structures which are machined and formed after casting.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art is: integral structures and incorporating the methods described in the various embodiments of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides a self-interacting formula EMUs brake block which characterized in that includes: a steel backing and a plurality of friction blocks; the steel backing is provided with a plurality of mounting holes; each friction block is provided with a shaft pin and is buckled and installed on the steel back through the shaft pin passing through the installation hole by a spring;
the friction blocks are divided into a plurality of groups, and each group at least comprises one friction block; gaps are reserved between each group of friction blocks and the adjacent group of friction blocks;
the friction block is a rectangular friction block; in each group of friction blocks, two adjacent friction blocks are in close contact with each other; the steel back is also provided with a limiting boss which is used for contacting with the friction block;
the friction block is provided with a back plate, and the shaft pin is arranged on the back plate; the shaft pin is inserted into the mounting hole so that the back plate is attached to the steel backing;
the steel backing is provided with an arc groove, and each mounting hole is positioned at the bottom of the center of the arc groove; the bearing pin is sleeved with a supporting seat; one side of the supporting seat is provided with an accommodating groove, and the other side of the supporting seat is provided with a spherical surface;
the friction block is in contact with the cambered surface groove through the spherical surface of the supporting seat;
a disc spring is sleeved on the shaft pin; the disc spring is positioned in the accommodating groove, and two sides of the disc spring are respectively contacted with the supporting seat and the back plate.
2. The self-adjusting motor train unit brake pad according to claim 1, wherein a circular truncated cone is arranged at the bottom of the shaft pin and connected with the back plate through the circular truncated cone; the disc-shaped spring is sleeved on the circular truncated cone.
3. The self-adjusting motor train unit brake pad according to claim 1, wherein a hard wear-resistant gasket is further arranged between the disc spring and the back plate; the hard wear-resistant gasket is sleeved at the bottom of the shaft pin.
4. The self-adjusting motor train unit brake pad according to claim 1, wherein an annular clamping groove is formed in the top end of the shaft pin, and a spring buckle is mounted on the annular clamping groove; the friction block is installed on the steel back through the spring buckle.
5. The self-adjusting motor train unit brake pad according to claim 1, wherein the steel backing is provided with two symmetrically arranged steel backs, and each steel back is provided with 9 friction blocks; the friction blocks on each steel backing are divided into four groups, and the number of each group is 1, 2, 3 and 3.
6. The self-adjusting motor train unit brake pad according to claim 5, wherein the width of the gap between the adjacent friction blocks is 5-15 mm.
CN202220015222.0U 2022-01-05 2022-01-05 Self-adjusting brake pad for motor train unit Active CN216867377U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220015222.0U CN216867377U (en) 2022-01-05 2022-01-05 Self-adjusting brake pad for motor train unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220015222.0U CN216867377U (en) 2022-01-05 2022-01-05 Self-adjusting brake pad for motor train unit

Publications (1)

Publication Number Publication Date
CN216867377U true CN216867377U (en) 2022-07-01

Family

ID=82151233

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220015222.0U Active CN216867377U (en) 2022-01-05 2022-01-05 Self-adjusting brake pad for motor train unit

Country Status (1)

Country Link
CN (1) CN216867377U (en)

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