CN114439871A - Automatic brake shoe abrasion limit alarm device - Google Patents
Automatic brake shoe abrasion limit alarm device Download PDFInfo
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- CN114439871A CN114439871A CN202111404775.1A CN202111404775A CN114439871A CN 114439871 A CN114439871 A CN 114439871A CN 202111404775 A CN202111404775 A CN 202111404775A CN 114439871 A CN114439871 A CN 114439871A
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- brake shoe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
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- Mechanical Engineering (AREA)
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses an automatic alarm device for brake shoe abrasion reaching the limit, which comprises an airtight detector, a brake shoe abrasion layer, a brake shoe sensor and a brake shoe controller, wherein the airtight detector is arranged on the outer side of the back surface of the brake shoe abrasion layer and is provided with an airtight cavity and at least one detection protrusion part protruding into the abrasion layer; the buzzer alarm valve comprises a valve body, a main valve cavity arranged in the valve body, and an air inlet valve cavity, a buzzer valve cavity and a brake shoe gas receiving valve cavity which are respectively connected with the main valve cavity; the main valve cavity is provided with a valve core close to one end of the brake shoe gas connecting valve cavity, a spring arranged on the top of the valve core and a valve cover for pressing the spring; the brake shoe air inlet valve cavity is internally provided with a throttle bolt; the buzzer valve cavity is communicated with the buzzer and triggers the buzzer to work and alarm when air is supplied to the buzzer. The brake shoe wear limit automatic alarm device provided by the invention is convenient for maintainers to quickly and efficiently detect the brake shoe of the railway vehicle, and has the advantages of mechanical automatic alarm, high reliability and lower operation cost.
Description
Technical Field
The invention relates to the technical field, in particular to an automatic alarm device for brake shoe abrasion reaching the limit.
Background
The rail vehicle tread braking unit adopts a brake shoe to rub with a wheel tread, and energy conversion is carried out when the brake shoe is contacted with the wheel tread to finally brake and stop the vehicle. When the rail vehicle brakes, the arc-shaped tile block brake shoe presses the tread of the wheel, when the wheel and the brake shoe rub, the surface of the brake shoe is worn, and when the brake shoe is worn to a specified limit, the brake shoe needs to be replaced.
At present, brake shoe wearing and tearing state inspection is all inspected according to brake shoe wearing and tearing to limit sign through the manual work, because the environment is poor under the car, the visual detection error is great, and the vehicle tread has certain radian, causes the brake shoe wearing and tearing inhomogeneous, relies on manual inspection completely, and it will have certain potential safety hazard to change untimely.
The brake shoe abrasion detection device and the detection method (202010967338. X) invented by Yangrongrong and Lianqiao and the like adopt an electronic tag form, and vehicles such as trucks and the like do not have power-on conditions under the vehicles, so that the practical application has certain limitation.
The brake shoe is installed on the rail vehicle, and after long-term braking process, the brake shoe normally wears, and when wearing and tearing to the limit after, need in time change the brake shoe to avoid influencing braking safety, because the wheel tread for the rail transit vehicle is the conical surface, the brake shoe holds in the palm and receives external factors such as gravity to influence simultaneously, and the wearing and tearing are not totally even, and conventional manual measurement has certain error, and detects work load big.
Therefore, the technical problem solved by the invention is as follows: the brake shoe can still rapidly and efficiently detect the brake shoe abrasion condition of the railway vehicle under the condition of no power-on and the condition of low reliability of online power-on real-time detection, and the brake shoe which can reliably work is provided, and the brake shoe abrasion limit rapid detection and alarm device.
Disclosure of Invention
In order to overcome the defects of the prior art, the brake shoe abrasion limit automatic alarm device provided by the invention has the advantages that after the brake shoe abrasion limit is reached, the buzzer sends out buzzing sound, and a maintainer can arrange to replace the brake shoe in time according to a buzzing alarm position signal, so that the workload of the maintainer in checking is reduced, and meanwhile, the brake shoe abrasion limit automatic alarm device greatly ensures the train running safety.
The technical scheme adopted by the invention is as follows: automatic brake shoe wear limit alarm device includes:
the air-tightness detector is arranged on the outer side of the back surface of the wear-resistant layer of the brake shoe and is provided with an air-tightness cavity and at least one detection protrusion part protruding into the wear-resistant layer;
the buzzer alarm valve comprises a valve body, a main valve cavity arranged in the valve body, and an air inlet valve cavity, a buzzer valve cavity and a brake shoe gas receiving valve cavity which are respectively connected with the main valve cavity;
the main valve cavity is provided with a valve core close to one end of the brake shoe gas receiving valve cavity, a spring arranged at the top of the valve core and a valve cover for pressing the spring;
the brake shoe air inlet valve cavity comprises a brake shoe air inlet valve cavity and a valve core air inlet cavity, wherein the brake shoe air inlet valve cavity supplies air to the brake shoe air inlet valve cavity from the outside, the valve core air inlet cavity supplies air to a main valve cavity in which a valve core is arranged from the outside, and meanwhile, a throttling bolt is arranged in the brake shoe air inlet valve cavity;
the buzzer valve cavity is communicated with the buzzer and supplies gas into the valve cavity to trigger the buzzer to work and give an alarm;
the brake shoe is connected with the gas valve cavity, one end of the brake shoe is communicated with the main valve cavity, and the other end of the brake shoe is connected with the airtight cavity through the sealing joint;
the valve core is provided with a sealing boss and a buzzing groove which is arranged at a position corresponding to the air inlet cavity of the valve core and is recessed towards the central axial direction of the valve core.
Preferably, a spring support column extends from the valve core self-sealing boss to one end of the valve cover.
Preferably, the valve core is provided with a sealing groove at a position close to the sealing boss and/or close to the buzzer groove, and sealing elements are filled in the sealing grooves.
Preferably, the valve body is fixedly connected with a gas distribution nozzle at the outer side of the gas inlet valve cavity;
the air distribution nozzle comprises an air inlet connected with external compressed air and a convergence cavity respectively communicated with the brake shoe air inlet cavity and the valve core air inlet cavity.
Preferably, the air distribution nozzle is fixedly connected with the valve body in any one or more modes of welding, bonding, bolt connection and rivets.
Preferably, the shape of the detection protrusion protruding into the wear-resistant layer is a wedge structure.
Preferably, the number of said detecting protrusions is 2-4, evenly distributed throughout the outer edge of the shoe.
Preferably, the depth of each of the detection protrusion wedge structures is no greater than 3 cm.
Preferably, the airtightness detector is arranged in an airtight groove on the back outer side of the wear-resistant layer of the brake shoe, and the airtight groove is positioned in the brake shoe body.
Preferably, the airtight detector is further provided with an airtight access opening and/or a handle on the outer side.
Preferably, the buzzer is provided with a buzzer shell and a connecting rod penetrating through the buzzer shell;
one end of the connecting rod is fixed on the outer side of the buzzer shell through a locking nut, and the other end of the connecting rod is connected with the buzzer valve cavity through the buzzer base, so that an air source is obtained through the buzzer valve cavity to touch the buzzer.
Compared with the prior art, the invention has the beneficial effects that:
1. the automatic alarm device is suitable for offline reliable detection of the rail vehicle, can be quickly connected with, tested and detached from the brake shoe by using the automatic alarm device when the rail vehicle is not electrified, and completes quick offline detection.
2. The detection efficiency is improved: the cost of manual detection time is reduced, the automatic alarm device and the brake shoe are connected to ventilate and can be detected immediately, the existing detection is completely carried out manually, tools are used for detection after disassembly, the time period is long, each brake shoe spends 1 minute of detection time, each vehicle is provided with 8 brake shoes, a row of 6 marshalling subway vehicles spends 48 minutes, one subway line is calculated according to 30 trains, and 24 hours are wasted in single brake shoe detection.
3. Brake shoes can fully exert their maximum life: the existing brake shoe is generally marked in the wear-resistant depth direction of the brake shoe, and when the conventional detection is carried out, a worker usually observes that the wear reaches the limit scale mark by naked eyes, and usually the wear is replaced when the scale mark is not reached, so that the safety influence is avoided, and the brake shoe is wasted seriously.
4. And (3) rapid and efficient detection: when the train is inspected daily, the maintainer can in time accurately change the wearing and tearing to limit brake shoe according to bee calling organ sound, compare with artifical visual, not only improved workman's efficiency, can effectively prevent the risk that visual error caused moreover, entire system can be applied to subway, train etc. and use the rail vehicle of brake shoe braking. Because of using mechanical alarm, system's equipment reliability is high, and the operation vehicle also can be reformed transform.
In conclusion, the brake shoe abrasion limit automatic alarm device provided by the invention is convenient for a maintainer to quickly and efficiently detect the brake shoe of the rail vehicle, can effectively prevent risks caused by visual errors, has the advantages of mechanical alarm, high reliability of system equipment, low operation cost and wide application range, and can be used for operating vehicles.
Drawings
FIG. 1 is a structural diagram of an automatic alarm device for brake shoe wear limit;
FIG. 2 is a view showing the structure of brake shoe from the wear to the limit;
FIG. 3 is a cross-sectional view of a buzzer warning valve;
FIG. 4 is a cross-sectional view of a gas distributing nozzle of the automatic alarm device for brake shoe wear limit;
fig. 5 is a structural view of the buzzer 30;
wherein: 10-airtight detector, 11-airtight cavity, 12-handle, 13-sealed joint, 14-airtight access hole; 20-a buzzing alarm valve, 21-a valve body, 22-a main valve cavity, 23-an air inlet valve cavity, 231-a brake shoe air inlet valve cavity and 232-a valve core air inlet cavity; 24-a buzzer valve cavity, 25-a brake shoe gas receiving valve cavity, 26-a valve core, 261-a sealing boss, 262-a buzzer groove, 263, 264-a sealing groove and 265-a spring support column; 27-spring, 28-valve cover, 29-throttle bolt; 30-a buzzer, 31-a buzzer shell, 32-a connecting rod, 33-a buzzer base and 34-a locking nut; 40-brake shoe, 41-wear layer, 42-airtight groove, 43-detection protrusion, 50-gas separation nozzle, 51-gas inlet, 52-convergence cavity.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the combination or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description process of the embodiment of the present invention, the positional relationships of the devices such as "upper", "lower", "front", "rear", "left", "right", and the like in all the drawings are based on fig. 1.
As shown in FIG. 1, the automatic brake shoe wear limit alarm device comprises:
an airtight detector 10, which is arranged on the back outer side of the wear-resistant layer 41 of the brake shoe 40 and is provided with an airtight cavity 11 and at least one detection protrusion 43 protruding into the wear-resistant layer 41;
as shown in detail in fig. 3, the buzzer warning valve 20 comprises a valve body 21, a main valve cavity 22 arranged in the valve body 21, and an air inlet valve cavity 23, a buzzer valve cavity 24 and a brake shoe air receiving valve cavity 25 which are respectively connected with the main valve cavity 22;
the main valve cavity 22 is provided with a valve core 26 close to one end of the brake shoe gas receiving valve cavity 25, a spring 27 arranged at the top of the valve core 26 and a valve cover 28 for pressing the spring 27;
the gas inlet valve cavity 23 comprises a brake shoe gas inlet valve cavity 231 for supplying gas to the brake shoe gas receiving valve cavity 25 from the outside and a valve core gas inlet cavity 232 for supplying gas to the main valve cavity 22 for placing the valve core 26 from the outside, and meanwhile, a throttle bolt 29 is arranged in the brake shoe gas inlet valve cavity 231;
the buzzer valve cavity 24 is communicated with the buzzer 30, and when air is supplied to the buzzer 30, the buzzer 30 is triggered to work and alarm, so that the brake shoe abrasion limit alarm function is realized;
the brake shoe gas receiving valve cavity 25 is communicated with the main valve cavity 22 at one end, and is connected with the airtight cavity 11 through the sealing joint 13 at the other end so as to supply gas into the airtight detector 10;
the valve core 26 is provided with a sealing boss 261 for limiting the valve core to completely slide to one side of the brake shoe gas receiving cavity 25 and tightly pressed by a supply spring 27, and a buzzing groove 262 which is arranged at a position corresponding to the valve core gas inlet cavity 232 and axially dented towards the center of the valve core and is used for communicating the valve core gas inlet cavity 232 with the buzzer 30 so as to trigger the buzzer 30 to work.
The brake shoe abrasion reaching limit automatic alarm device of the invention is characterized in that:
compressed air enters the valve body 21 in two paths through the air inlet valve cavity 23 or the air distribution nozzle 50, enters the wear-limiting brake shoe in one path through the throttle bolt 29 (the brake shoe air inlet valve cavity 231) → the brake shoe air receiving valve cavity 25, and enters the main valve cavity 22 in the other path through the valve core air inlet cavity 232.
When the vehicle normally runs, under the action of compressed air force, the pressure in the main valve cavity 22 is small, the valve core 26 is forced to move to the right, and when the brake shoe is worn to the limit, the brake shoe has a detection protrusion 43 which is worn to the limit and is the same as the atmosphere. After the compressed air enters from the air inlet, one path of compressed air pushes the valve core 22 to move rightwards, at the moment, the compressed air of the buzzer is blocked, and the other path of compressed air enters the brake shoe through the output port.
When the detecting protrusion of the air-tightness detector 10 installed on the brake shoe 40 is worn to a predetermined position, the compressed air in the air-tightness cavity 11 of the air-tightness detector 10 leaks, the brake shoe in the buzzer alarm valve is connected with the air valve cavity 25, the main compressed air cannot be supplemented in time due to the action of the throttle bolt 29, the air pressure on the left side of the valve core 22 is smaller than the pressure of the spring 27 on the right side, at the moment, the total air enters the cavity in the buzzer 30 through the valve body 22, and impacts the buzzer 30 through the internal flow channel to make a sound, thereby playing a role in alarming.
From the spool 26 of the buzzer warning valve 20 of fig. 3, a spring support 265 also extends from the self-sealing boss 261 to the end of the bonnet 28, for supplying the spring 27 around its outside, supporting and defining the position of the spring 27 in the main valve chamber 22.
Preferably, the valve core 26 of the brake shoe wear-out-limiting automatic alarm device is provided with sealing grooves 263 and 264 near the sealing boss 261 and/or near the buzzer groove 262, and the sealing grooves 263 and 264 are filled with sealing elements, so as to enhance the sealing capability of the valve core and ensure the accuracy and stability of the alarm of the whole buzzer 30.
The valve body 21 of the brake shoe wear-to-limit automatic alarm device shown in fig. 3 is fixedly connected with a gas distribution nozzle 40 at the outer side of the air inlet valve cavity 23, so that compressed air entering from the outside is gathered and simultaneously supplied to the main valve cavity 22 and the brake shoe air receiving valve cavity 25, and the main valve cavity 22 and the brake shoe air receiving valve cavity 25 are guaranteed to have a good air linkage effect.
As can be seen from fig. 4, the air distributing nozzle 50 includes an air inlet 51 for connecting external compressed air, and a converging chamber 52 for respectively communicating the brake shoe air inlet valve chamber 231 and the valve core air inlet chamber 232, and after the compressed air enters the converging chamber 52 through the air inlet 51, a large amount of air is supplied to the side with large pressure according to the pressure of the brake shoe air inlet valve chamber 25 and the main valve chamber 22.
As shown in fig. 3 and 4, the gas distributing nozzle 50 is fixedly connected to the valve body 21 by any one or more of welding, bonding, bolting, and riveting, and other fixing connection methods are within the protection scope of the present invention, and a certain sealing measure is taken if necessary.
As seen in fig. 1 and 2, the shape of the detecting protrusion 43 that protrudes into the wear layer 41 of the brake shoe 40 is wedge-shaped so that the protruding detecting protrusion can give an alarm in time when the wear layer of the brake shoe 40 is reaching the wear limit.
Preferably, the number of the detecting protrusions 43 is 2-4, and the detecting protrusions are uniformly distributed on the outer edge of the whole brake shoe, so that the condition that the whole brake shoe reaches the limit can be effectively improved, and the accuracy of alarming and the safety and reliability of the whole railway vehicle brake shoe can be improved.
In a preferred embodiment, the wedge-shaped configuration of each of said detecting protrusions 43 has a depth not greater than 3cm, avoiding premature scrapping of the entire brake shoe 40, avoiding waste, and allowing an overall increase in the life of the brake shoe, with a greater reduction in costs, for rail vehicles requiring a greater use of the brake shoe.
From the automatic alarm device of fig. 1, the airtight detector 10 is disposed in the airtight groove 42 on the back outer side of the wear layer 41 of the brake shoe 40, and the airtight groove 42 is located inside the body of the brake shoe 40 and forms an integral structure with the brake shoe, so that the design is beneficial in that: the air-tight groove 42 and the at least one detection protrusion 43 protruding into the wear-resistant layer 41 are directly detected quickly when the brake shoe 40 is worn to leak the detection protrusion 43 after working for a period of time; another great advantage of this design is that the brake shoe 40 itself has a simple structure design, no additional configuration structure is required, no additional sealing is required, and the manufacturing cost and time are saved, so that the integration of the airtight detector 10 and the brake shoe 40 is realized, and the installation and the use are convenient. The outer edge of the wear-resistant layer of the whole brake shoe is integrally detected by detection personnel conveniently, and the detection result is more accurate.
As seen in fig. 5, the buzzer 30, has a buzzer housing 31, and a connecting rod 32 penetrating the buzzer housing 31;
connecting rod 32, one end is passed through lock nut 34 and is fixed in the buzzing shell 31 outside, and the other end still connects buzzing valve chamber 24 through buzzer base 33 to acquire the air supply through buzzing valve chamber 24 and touch buzzer 30, the design of this structure, its benefit makes things convenient for buzzer detection, dismantlement, installation and maintenance to use. In a normal implementation process, the buzzer shell 31 generally needs to be sealed and fixedly connected with the valve body 21 of the buzzer alarm valve 20, the connection mode can be as shown in fig. 5, a groove fit type sealing fit structure is arranged between the valve body 21 and the buzzer base 33, and a sealing structure can also be directly placed, which is within the protection scope of the present invention.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (11)
1. Automatic brake shoe abrasion limit alarming device is characterized by comprising:
an air-tightness detector (10) which is arranged on the outer side of the back surface of the wear-resistant layer (41) of the brake shoe (40) and is provided with an air-tightness cavity (11) and at least one detection protrusion part (43) protruding into the wear-resistant layer (41);
the buzzing alarm valve (20) comprises a valve body (21), a main valve cavity (22) arranged in the valve body (21), and an air inlet valve cavity (23), a buzzing valve cavity (24) and a brake shoe air connecting valve cavity (25) which are respectively connected with the main valve cavity (22);
the main valve cavity (22) is provided with a valve core (26) close to one end of the brake shoe gas-receiving valve cavity (25), a spring (27) arranged at the top of the valve core (26) and a valve cover (28) pressing the spring (27);
the gas inlet valve cavity (23) comprises a brake shoe gas inlet valve cavity (231) for supplying gas to the brake shoe gas receiving valve cavity (25) from the outside, and a valve core gas inlet cavity (232) for supplying gas to the main valve cavity (22) for placing the valve core (26) from the outside, and a throttling bolt (29) is arranged in the brake shoe gas inlet valve cavity (231);
the buzzer valve cavity (24) is communicated with the buzzer (30) and triggers the buzzer (30) to work and alarm when air is supplied into the valve cavity;
the brake shoe is connected with the gas valve cavity (25), one end of the brake shoe is communicated with the main valve cavity (22), and the other end of the brake shoe is connected with the airtight cavity (11) through a sealing joint (13);
the valve core (26) is provided with a sealing boss (261) and a buzzing groove (262) which is arranged at the position corresponding to the valve core air inlet cavity (232) and is axially recessed towards the center of the valve core.
2. The brake shoe wear limit automatic alarm device according to claim 1, characterized in that:
and a spring support column (265) extends from the valve core (26) self-sealing boss (261) to one end of the valve cover (28).
3. The brake shoe wear limit automatic alarm device according to claim 1, characterized in that:
and the valve core (26) is provided with sealing grooves (263, 264) at the positions close to the sealing boss (261) and/or the buzzing groove (262), and sealing elements are filled in the sealing grooves (263, 264).
4. The brake shoe wear limit automatic alarm device according to claim 1, characterized in that:
the valve body (21) is fixedly connected with a gas distributing nozzle (50) at the outer side of the gas inlet valve cavity (23);
the air distribution nozzle (50) comprises an air inlet (51) connected with external compressed air and a convergence cavity (52) respectively communicated with a brake shoe air inlet cavity (231) and a valve core air inlet cavity (232).
5. The brake shoe wear limit automatic alarm device according to claim 4, characterized in that:
the air distribution nozzle (50) is fixedly connected with the valve body (21) in any one or more modes of welding, bonding, bolt connection and rivets.
6. The brake shoe wear limit automatic alarm device according to claim 1, characterized in that:
the shape of the detection protrusion (43) protruding into the wear-resistant layer (41) is a wedge-shaped structure.
7. The brake shoe wear limit automatic alarm device according to claim 6, characterized in that:
the number of the detecting protrusions (43) is 2-4, and the detecting protrusions are uniformly distributed on the outer edge of the whole brake shoe.
8. The brake shoe wear limit automatic alarm device according to claim 6, characterized in that:
the depth of each wedge-shaped structure of the detection protrusion part (43) is not more than 3 cm.
9. The brake shoe wear limit automatic alarm device according to any one of claims 1 to 8, characterized in that:
the air tightness detector (10) is arranged in an air tightness groove (42) on the outer side of the back surface of a wear-resistant layer (41) of the brake shoe (40), and the air tightness groove (42) is positioned inside the body of the brake shoe (40).
10. The brake shoe wear limit automatic alarm device according to claim 9, characterized in that:
the outer side of the airtight detector (10) is also provided with an airtight access opening (14) and/or a handle (12).
11. The brake shoe wear limit automatic alarm device according to claim 9, characterized in that:
the buzzer (30) is provided with a buzzer shell (31) and a connecting rod (32) penetrating through the buzzer shell (31);
one end of the connecting rod (32) is fixed on the outer side of the buzzer shell (31) through a locking nut (34), and the other end of the connecting rod is connected with the buzzer valve cavity (24) through a buzzer base (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404775.1A CN114439871B (en) | 2021-11-24 | 2021-11-24 | Automatic alarm device for brake shoe abrasion limit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404775.1A CN114439871B (en) | 2021-11-24 | 2021-11-24 | Automatic alarm device for brake shoe abrasion limit |
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| Publication Number | Publication Date |
|---|---|
| CN114439871A true CN114439871A (en) | 2022-05-06 |
| CN114439871B CN114439871B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111404775.1A Active CN114439871B (en) | 2021-11-24 | 2021-11-24 | Automatic alarm device for brake shoe abrasion limit |
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|---|---|---|---|---|
| JPS4943683U (en) * | 1972-07-24 | 1974-04-17 | ||
| JPS5590733A (en) * | 1978-12-29 | 1980-07-09 | Toyota Motor Corp | Brake clearance limit alarming device for air over-hydraulic brake system |
| WO1992018787A1 (en) * | 1991-04-10 | 1992-10-29 | Alfred Teves Gmbh | Disc brake with holder for warning contact plug |
| JP2001140960A (en) * | 1999-11-19 | 2001-05-22 | Tokyo Buhin Kogyo Co Ltd | Brake lining wear detection device |
| CN201110326Y (en) * | 2007-08-28 | 2008-09-03 | 刘锦辉 | Warning device for clutch booster |
| CN204704298U (en) * | 2015-06-16 | 2015-10-14 | 山东科大机电科技股份有限公司 | Brake block abrasion is substitution detector more |
| CN206682196U (en) * | 2017-02-28 | 2017-11-28 | 山东科大机电科技股份有限公司 | Brake block abrasion automatic detection device |
| CN208311331U (en) * | 2018-06-11 | 2019-01-01 | 重庆中铃兆虎机车制造有限公司 | Water brake detection device |
| CN111795094A (en) * | 2020-08-12 | 2020-10-20 | 嘉兴学院 | Automobile brake pad wear sensor |
| CN112211933A (en) * | 2020-09-15 | 2021-01-12 | 深圳市远望谷信息技术股份有限公司 | Train brake shoe abrasion detection device and detection method |
-
2021
- 2021-11-24 CN CN202111404775.1A patent/CN114439871B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943683U (en) * | 1972-07-24 | 1974-04-17 | ||
| JPS5590733A (en) * | 1978-12-29 | 1980-07-09 | Toyota Motor Corp | Brake clearance limit alarming device for air over-hydraulic brake system |
| WO1992018787A1 (en) * | 1991-04-10 | 1992-10-29 | Alfred Teves Gmbh | Disc brake with holder for warning contact plug |
| JP2001140960A (en) * | 1999-11-19 | 2001-05-22 | Tokyo Buhin Kogyo Co Ltd | Brake lining wear detection device |
| CN201110326Y (en) * | 2007-08-28 | 2008-09-03 | 刘锦辉 | Warning device for clutch booster |
| CN204704298U (en) * | 2015-06-16 | 2015-10-14 | 山东科大机电科技股份有限公司 | Brake block abrasion is substitution detector more |
| CN206682196U (en) * | 2017-02-28 | 2017-11-28 | 山东科大机电科技股份有限公司 | Brake block abrasion automatic detection device |
| CN208311331U (en) * | 2018-06-11 | 2019-01-01 | 重庆中铃兆虎机车制造有限公司 | Water brake detection device |
| CN111795094A (en) * | 2020-08-12 | 2020-10-20 | 嘉兴学院 | Automobile brake pad wear sensor |
| CN112211933A (en) * | 2020-09-15 | 2021-01-12 | 深圳市远望谷信息技术股份有限公司 | Train brake shoe abrasion detection device and detection method |
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|---|---|
| CN114439871B (en) | 2023-07-28 |
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