CN210087879U - Brake friction plate abrasion detection structure - Google Patents
Brake friction plate abrasion detection structure Download PDFInfo
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- CN210087879U CN210087879U CN201920473597.XU CN201920473597U CN210087879U CN 210087879 U CN210087879 U CN 210087879U CN 201920473597 U CN201920473597 U CN 201920473597U CN 210087879 U CN210087879 U CN 210087879U
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- brake cylinder
- spring brake
- indicator switch
- assembly
- nut
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Abstract
The utility model discloses a brake friction plate abrasion detection structure, which belongs to the technical field of automobile axles and comprises a spring brake cylinder and an indicator switch assembly, wherein the spring brake cylinder and the indicator switch assembly comprise a spring brake cylinder and a welded nut assembly, an abrasion indicator switch and an adjusting gasket; a round hole structure is arranged on a base of the spring brake cylinder; a welding nut is welded on a base of the spring brake cylinder, and the welding nut is concentric with a round hole structure on the base of the spring brake cylinder; adjusting gaskets are arranged between the end faces of the weld nuts of the spring brake cylinder and the weld nut assembly and the wear indicator switch; the thread diameter of the wear indicator switch is screwed into the threaded hole of the welding nut, and the probe penetrates through a round hole in the base of the brake cylinder; the structure is characterized in that a wear indicator switch is arranged on a spring brake cylinder, and the piston extending distance of the spring brake cylinder is used for detecting the wear thickness of a friction plate. The wear indicator switch is exposed outside the axle, so that the maintenance is convenient, and the assembly efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the car axle, concretely relates to brake friction disc wearing and tearing detection structure.
Background
In domestic automobile axles, according to regulations, a brake friction and wear detection function needs to be added to improve safety. At present, a wear-off type sensor is additionally arranged in a friction plate of a brake. When the friction plate is worn to the limit thickness, the fuse of the sensor is worn off, so that the sensor is detected. With the structure, the sensor and the friction plate need to be replaced together, so that the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
For in solving current car axle, when the limit wearing and tearing thickness of surveying the stopper friction disc, adopt to grind disconnected formula sensor structure, when leading to the maintenance, the sensor needs to be together changed with the friction disc, and then leads to cost of maintenance to increase the scheduling problem, the utility model provides a novel stopper friction disc wearing and tearing are surveyed structure reduces the cost of maintenance change.
The utility model discloses a following technical scheme realizes:
a brake friction plate wear detection structure comprises a spring brake cylinder and indicator switch assembly 6, wherein the spring brake cylinder and indicator switch assembly 6 is in threaded connection with a gas chamber support 7 of a drum brake assembly 9, and the spring brake cylinder and indicator switch assembly 6 comprises a spring brake cylinder and weld nut assembly 3, a wear indicator switch 4 and an adjusting gasket 5; the spring brake cylinder and weld nut assembly 3 consists of a spring brake cylinder 1 and a weld nut 2, and a base of the spring brake cylinder 1 is provided with a circular hole structure; a welding nut 2 is welded on a base of the spring brake cylinder 1, and the welding nut 2 is concentric with a round hole structure on the base of the spring brake cylinder 1; an adjusting gasket 5 is arranged between the end face of the welding nut 2 of the spring brake cylinder and welding nut assembly 3 and the wear indicator switch 4 and is used for adjusting the axial distance of the wear indicator switch 4; the front end of the wear indicator switch 4 is provided with a thread diameter 19, the thread diameter 19 is provided with a probe 20, the thread diameter 19 is screwed into a threaded hole of the welding nut 2, and the probe 20 penetrates through a round hole in a base of the spring brake cylinder 1.
Furthermore, two threaded columns are arranged on the spring brake cylinder and indicator switch assembly 6, the two threaded columns are installed in distribution holes of an air chamber bracket 7 of the drum brake assembly 9, and the end faces of the threaded columns are attached; the nut 8 is screwed into the threaded stud of the spring brake cylinder and indicator switch assembly 6 and tightened.
The utility model discloses a brake friction disc wearing and tearing detection structure's principle as follows:
high-pressure gas enters the spring brake cylinder 1 to push the piston 12 to move linearly, the piston 12 drives the movable fork 13 to move linearly, the movable fork 13 drives the adjusting arm 14 to rotate, the adjusting arm 14 drives the cam shaft 15 to rotate, and the cam shaft 15 pushes the brake shoe 16 to open, so that the friction plate 17 and the brake drum 18 are in contact friction to realize a braking function. When the friction plate 17 is worn to the limit position, the lower bottom surface of the piston 12 pushes the probe 20 of the wear indicator switch 4 to move, and the detection function is realized.
Compared with the prior art, the utility model has the advantages as follows:
the utility model discloses a brake friction disc wearing and tearing detection structure is through installation wear indicator switch on spring brake jar to utilize spring brake jar's piston to stretch out the wearing and tearing thickness of distance detection friction disc. Compared with a wear-off sensor, the wear indicator switch with the structure does not need to be replaced together with a friction plate, so that the maintenance cost is saved; the wear indicator switch is exposed outside the axle, so that the maintenance is convenient; the installation of wear indicator switch is very simple and convenient, promotes assembly efficiency.
Drawings
Fig. 1 is a schematic structural view illustrating a brake friction plate wear detection structure applied to a rear axle assembly according to the present invention;
fig. 2a is a front view of a brake friction plate wear detection structure of the present invention applied to a drum brake assembly;
fig. 2b is a sectional view of a brake friction plate wear detection structure applied to a drum brake assembly according to the present invention;
fig. 3a is a front view of a spring brake cylinder and indicator switch assembly of a brake friction plate wear detection structure of the present invention;
fig. 3b is a sectional view taken along the line a-a of the spring brake cylinder and indicator switch assembly of a brake friction plate wear detection structure according to the present invention;
fig. 4a is a front view of a spring brake cylinder and weld nut assembly of a brake friction plate wear detection structure according to the present invention;
FIG. 4B is a sectional view of the spring brake cylinder and weld nut assembly of a brake friction plate wear detection structure according to the present invention from the B-B direction;
fig. 5 is a schematic structural view of a wear indicator switch of a brake friction plate wear detection structure according to the present invention;
in the figure: the brake system comprises a spring brake cylinder 1, a weld nut 2, a spring brake cylinder and weld nut assembly 3, a wear indicator switch 4, an adjusting gasket 5, a spring brake cylinder and indicator switch assembly 6, an air chamber bracket 7, a nut 8, a drum brake assembly 9, an axle housing assembly 10, a bolt 11, a piston 12, a movable fork 13, an adjusting arm 14, a cam shaft 15, a brake shoe 16, a friction plate 17, a brake drum 18, a thread diameter 19 and a probe 20.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 3b, a brake lining wear detection structure comprises a spring brake cylinder and indicator switch assembly 6, wherein the spring brake cylinder and indicator switch assembly 6 is in threaded connection with a gas chamber bracket 7 of a drum brake assembly 9, and the spring brake cylinder and indicator switch assembly 6 comprises a spring brake cylinder and weld nut assembly 3, a wear indicator switch 4 and an adjusting shim 5; the spring brake cylinder and weld nut assembly 3 consists of a spring brake cylinder 1 and a weld nut 2, and a base of the spring brake cylinder 1 is provided with a circular hole structure; a welding nut 2 is welded on a base of the spring brake cylinder 1, and the welding nut 2 is concentric with a round hole structure on the base of the spring brake cylinder 1; an adjusting gasket 5 is arranged between the end face of the welding nut 2 of the spring brake cylinder and welding nut assembly 3 and the wear indicator switch 4 and is used for adjusting the axial distance of the wear indicator switch 4; as shown in fig. 5, the front end of the wear indicator switch 4 is provided with a thread diameter 19, the thread diameter 19 is provided with a probe 20, the thread diameter 19 is screwed into a threaded hole of the weld nut 2, and the probe 20 passes through a round hole on the base of the spring brake cylinder 1.
As shown in fig. 1, a central hole of a drum brake assembly 9 is arranged in a circular male spigot of a brake flange of an axle housing assembly 10, and the end faces of the brake flange are attached; bolts 11 pass through distributed holes of the drum brake assembly 9, are screwed into distributed threaded holes of the axle housing assembly 10 and are tightened. As shown in fig. 2a, two threaded columns of the spring brake cylinder and indicator switch assembly 6 are installed into two distributed holes of the air chamber bracket 7 of the drum brake assembly 9, and the end faces are attached; the nut 8 is screwed into the thread diameter of the spring brake cylinder and indicator switch assembly 6 and is screwed tightly; the threaded hole of the movable fork 13 is screwed into the thread diameter of the piston 12 and is tightened with a nut.
Claims (2)
1. The brake friction plate wear detection structure is characterized by comprising a spring brake cylinder and indicator switch assembly (6), wherein the spring brake cylinder and indicator switch assembly (6) comprises a spring brake cylinder and welding nut assembly (3), a wear indicator switch (4) and an adjusting gasket (5); the spring brake cylinder and weld nut assembly (3) consists of a spring brake cylinder (1) and a weld nut (2), and a circular hole structure is arranged on a base of the spring brake cylinder (1); a welding nut (2) is welded on a base of the spring brake cylinder (1), and the welding nut (2) is concentric with a round hole structure on the base of the spring brake cylinder (1); an adjusting gasket (5) is arranged between the end face of the welding nut (2) of the spring brake cylinder and welding nut assembly (3) and the wear indicator switch (4) and is used for adjusting the axial distance of the wear indicator switch (4); the front end of the wear indicator switch (4) is provided with a thread diameter (19), a probe (20) is arranged on the thread diameter (19), the thread diameter (19) is screwed into a threaded hole of the welding nut (2), and the probe (20) penetrates through a round hole in a base of the spring brake cylinder (1).
2. A brake friction plate wear detection structure according to claim 1, characterized in that the spring brake cylinder and indicator switch assembly (6) is provided with two threaded columns which are arranged in distributed holes of an air chamber bracket (7) of a drum brake assembly (9) and are abutted with end faces; and a nut (8) is screwed into the threaded column of the spring brake cylinder and indicator switch assembly (6) and is screwed tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473597.XU CN210087879U (en) | 2019-04-10 | 2019-04-10 | Brake friction plate abrasion detection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473597.XU CN210087879U (en) | 2019-04-10 | 2019-04-10 | Brake friction plate abrasion detection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087879U true CN210087879U (en) | 2020-02-18 |
Family
ID=69473883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920473597.XU Active CN210087879U (en) | 2019-04-10 | 2019-04-10 | Brake friction plate abrasion detection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210087879U (en) |
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2019
- 2019-04-10 CN CN201920473597.XU patent/CN210087879U/en active Active
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