CN114439871B - Automatic alarm device for brake shoe abrasion limit - Google Patents
Automatic alarm device for brake shoe abrasion limit Download PDFInfo
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- CN114439871B CN114439871B CN202111404775.1A CN202111404775A CN114439871B CN 114439871 B CN114439871 B CN 114439871B CN 202111404775 A CN202111404775 A CN 202111404775A CN 114439871 B CN114439871 B CN 114439871B
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses an automatic warning device for limiting abrasion of a brake shoe, which comprises an airtight detector, a sensor and a control unit, wherein the airtight detector is arranged on the outer side of the back surface of a wear-resistant layer of the brake shoe and is provided with an airtight cavity and at least one detection protruding 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 air 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 air receiving valve cavity, a spring arranged at the top of the valve core and a valve cover for compressing the spring; the air inlet valve cavity comprises a brake shoe air inlet valve cavity and a valve core air inlet cavity, and a throttle bolt is arranged in the brake shoe air inlet valve cavity; the buzzer valve cavity is communicated with the buzzer and is used for triggering the buzzer to alarm when the buzzer is supplied with air. The automatic brake shoe abrasion limit alarm device is convenient for an maintainer to rapidly and efficiently detect the brake shoe of the railway vehicle, and has the advantages of automatic mechanical alarm, high reliability and lower running cost.
Description
Technical Field
The invention relates to the technical field, in particular to an automatic warning device for limiting abrasion of a brake shoe.
Background
The tread braking unit of the railway vehicle adopts a brake shoe to rub the tread of the wheel, and energy conversion is carried out when the brake shoe contacts the tread of the wheel, so that the vehicle is braked and stopped finally. When the railway vehicle brakes, the arc-shaped shoe blocks press the tread of the wheel, when the wheel rubs with the shoe blocks, the surface of the shoe blocks will wear, and when the shoe blocks wear to the specified limit, the shoe blocks need to be replaced.
At present, the brake shoe abrasion state inspection is carried out according to the brake shoe abrasion limit mark through manual work, because the environment is poor under the vehicle, the visual detection error is great, and the tread of the vehicle has certain radian, causes brake shoe abrasion to be uneven, relies on manual inspection completely, and certain potential safety hazard exists in time of replacement.
Kong Lingrong, lai Yuanqiao et al discloses a brake shoe wear detection device and a detection method (202010967338. X) in the form of an electronic tag, and vehicles such as trucks and the like have no power-on condition under the vehicles, and have a certain limitation in practical application.
The brake shoe is installed on rail vehicle, after long-term braking process, the brake shoe is normally worn and torn, when wearing and tearing limit back, need in time change the brake shoe to avoid influencing braking safety, because rail transit vehicle is with the wheel tread as the conical surface, the brake shoe head receives external factor influences such as gravity simultaneously, and wearing and tearing are not completely even, and conventional manual measurement has certain error, and detects the work load greatly.
The technical problems solved by the invention are as follows: how to provide a brake shoe which can still rapidly and efficiently detect the abrasion condition of the brake shoe of a railway vehicle under the condition of no power supply and the condition of low reliability of online power supply real-time detection, and realize reliable work, and a brake shoe abrasion limit rapid detection and alarm device.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the automatic brake shoe abrasion limit alarm device which can make a buzzer sound after the abrasion of the brake shoe reaches the limit, and an maintainer can arrange the timely replacement of the brake shoe according to a buzzing alarm position signal, so that the workload of the maintainer is reduced, and the running safety of a train is greatly ensured.
The technical scheme adopted by the invention is as follows: an automatic brake shoe wear limit alarm device comprising:
an airtight detector, which is arranged on the outer side of the back of the wear-resistant layer of the brake shoe, and is provided with an airtight cavity and at least one detection protruding 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 air 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 air receiving valve cavity, a spring arranged at the top of the valve core and a valve cover for compressing the spring;
the air inlet valve cavity comprises a brake shoe air inlet valve cavity for supplying air to the brake shoe air receiving valve cavity from the outside and a valve core air inlet cavity for supplying air to a main valve cavity for placing a valve core from the outside, and meanwhile, a throttle bolt is arranged in the brake shoe air inlet valve cavity;
the buzzer valve cavity is communicated with the buzzer and is used for triggering the buzzer to work and alarm when air is supplied to the buzzer;
one end of the brake shoe air-connection valve cavity is communicated with the main valve cavity, and the other end of the brake shoe air-connection valve cavity is connected with the air-tight cavity through a sealing joint;
the valve core is provided with a sealing boss and a buzzing groove which is axially recessed towards the center of the valve core and is arranged at the position corresponding to the valve core air inlet cavity.
Preferably, the valve core self-sealing boss extends to one end of the valve cover to form a spring support column.
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 dividing nozzle at the outer side of the gas inlet valve cavity;
the air distributing nozzle comprises an air inlet connected with external compressed air and a converging cavity respectively communicated with the air inlet cavity of the brake shoe and the air inlet cavity of the valve core.
Preferably, the gas distributing nozzle is fixedly connected with the valve body through any one or a plurality of modes of welding, bonding, bolting and riveting.
Preferably, the detection protrusions protruding into the wear layer are wedge-shaped in shape.
Preferably, the number of the detecting protrusions is 2 to 4, and the detecting protrusions are uniformly arranged throughout the outer periphery of the brake shoe.
Preferably, the depth of each of the detection protrusion wedge structures is not more than 3cm.
Preferably, the airtight detector is disposed in an airtight groove on the outside of the back of the brake shoe wear layer, and the airtight groove is located inside the brake shoe body.
Preferably, the airtight detector is further provided with an airtight access hole and/or a handle at 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 acquired through the buzzer valve cavity to trigger the buzzer.
Compared with the prior art, the invention has the beneficial effects that:
1. be applicable to the reliable detection of off-line of rail vehicle, when rail vehicle does not switch on, can use this automatic alarm device, be connected, test and dismantlement with the brake shoe fast, accomplish quick off-line 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 and ventilated, the detection can be immediately carried out, the existing detection is carried out completely by manual work, the detection is carried out by using tools after the detection is needed to be disassembled, the time period is long, each brake shoe takes 1 minute more, 8 brake shoes are arranged on each train, 48 minutes are needed for 6 train-formed metro vehicles, and 24 hours are wasted for detecting only brake shoes by calculating 30 trains on one metro line.
3. The brake shoe can fully exert the maximum service life: the existing brake shoe is marked on the wear-resistant depth direction of the brake shoe, when conventional detection is carried out, a worker usually observes the abrasion to the limit scale mark by naked eyes, and the brake shoe is replaced when the scale mark is not reached, so that the safety influence is avoided, and the brake shoe is seriously wasted.
4. And (3) rapid and efficient detection: when the train is inspected daily, an maintainer can timely and accurately replace the abrasion limiting brake shoe according to the sound of the buzzer, compared with manual visual inspection, the efficiency of workers is improved, the risk caused by visual error can be effectively prevented, and the whole system can be applied to railway vehicles using brake shoes for braking such as subways and trains. Because of using mechanical alarm, the reliability of the system equipment is high, and the operation vehicle can be modified.
In summary, the brake shoe abrasion limit automatic alarm device is convenient for maintenance personnel to rapidly and efficiently detect the brake shoe of the railway vehicle, can effectively prevent risks caused by visual errors, has mechanical alarm and high reliability of system equipment, can reform an operating vehicle, has lower operating cost and has wide application range.
Drawings
FIG. 1 is a block diagram of an automatic brake shoe wear limit warning device;
FIG. 2 is a block diagram of a brake shoe wear to limit brake shoe wear;
FIG. 3 is a cross-sectional view of a buzzer alarm valve;
FIG. 4 is a cross-sectional view of a tap of the brake shoe wear limit automatic alarm device;
fig. 5 is a structural view of the buzzer 30;
wherein: 10-airtight detector, 11-airtight cavity, 12-handle, 13-sealing 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-buzzing valve cavity, 25-brake shoe air-receiving valve cavity, 26-valve core, 261-sealing boss, 262-buzzing groove, 263, 264-sealing groove, 265-spring support column; 27-springs, 28-valve covers and 29-throttle bolts; 30-buzzer, 31-buzzer shell, 32-connecting rod, 33-buzzer base and 34-locking nut; 40 parts of brake shoe, 41 parts of wear-resistant layer, 42 parts of airtight groove, 43 parts of detection protrusion, 50 parts of air dividing nozzle, 51 parts of air inlet and 52 parts of converging cavity.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated combinations or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not 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" and "right" in all the figures are all standardized in fig. 1.
As shown in fig. 1, the brake shoe wear limit automatic alarm device comprises:
an airtight detector 10 provided on the outside of the back surface of the wear layer 41 of the brake shoe 40, and having an airtight chamber 11 and at least one detection protrusion 43 protruding toward the wear layer 41;
as shown in fig. 3, and a buzzer alarm valve 20, comprising 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 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 air receiving valve cavity 25, a spring 27 arranged at the top of the valve core 26 and a valve cover 28 for compressing the spring 27;
the air inlet valve cavity 23 comprises a brake shoe air inlet valve cavity 231 for supplying air to the brake shoe air receiving valve cavity 25 from the outside and a valve core air inlet cavity 232 for supplying air 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 air inlet valve cavity 231;
the buzzer valve cavity 24 is communicated with the buzzer 30 and is used for triggering the buzzer 30 to work and alarm when the buzzer 30 is supplied with air, so that the brake shoe abrasion limit alarm function is achieved;
one end of the brake shoe air-connection valve cavity 25 is communicated with the main valve cavity 22, and the other end of the brake shoe air-connection valve cavity is connected with the airtight cavity 11 through the sealing joint 13 so as to supply air into the airtight detector 10;
the valve core 26 is provided with a sealing boss 261 for limiting the valve core to slide to one side of the brake shoe air receiving valve cavity 25 completely, pressing and stressing the valve core through a supply spring 27, and a buzzing groove 262 axially recessed towards the center of the valve core and arranged at a position corresponding to the valve core air inlet cavity 232 and used for communicating the valve core air inlet cavity 232 and the buzzer 30 so as to trigger the buzzer 30 to work.
The automatic warning device for the abrasion limit of the brake shoe comprises a brake shoe body, a brake block, a brake head and a brake head, wherein the brake block is provided with a brake head, and the brake head is provided with a brake head and a brake head, and:
compressed air enters the valve body 21 through the air inlet valve cavity 23 or the air dividing nozzle 50 in two paths, one path enters the abrasion limiting shoe through the throttle bolt 29 (the shoe air inlet valve cavity 231), the shoe air receiving valve cavity 25 and the other path enters the main valve cavity 22 through the valve core air inlet cavity 232.
When the vehicle is running normally, the pressure in the main valve chamber 22 is small and the valve core 26 is forced to move right under the action of the compressed air force, and when the brake shoe is worn to the limit, the brake shoe has the detection protruding part 43 to be worn to the limit opening and the atmosphere are the same. 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 inside of the brake shoe through the output port.
When the detection protruding part of the airtight detector 10 installed on the brake shoe 40 is worn to a preset position, compressed air in the airtight cavity 11 in the airtight detector 10 leaks, main compressed air cannot be supplemented in time due to the action of the throttle bolt 29 in the brake shoe air receiving valve cavity 25 in the buzzer alarm valve, the left air pressure of the valve core 22 is smaller than the right spring 27 pressure, and at the moment, total wind enters the inner cavity of the buzzer 30 through the valve body 22 and impacts the buzzer 30 through the inner flow channel to play a role in alarming.
From the spool 26 of the buzzer alarm valve 20 of fig. 3, a spring support post 265 also extends from the self-sealing boss 261 to one end of the valve cap 28 for feeding the spring 27 over its outside, supporting and defining the position of the spring 27 in the main valve chamber 22.
More preferably, the valve core 26 of the brake shoe abrasion limit automatic alarm device is provided with sealing grooves 263 and 264 near the sealing boss 261 and/or near the buzzer groove 262, and sealing elements are filled in the sealing grooves 263 and 264 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 abrasion limit automatic alarm device shown in fig. 3 is fixedly connected with a gas distributing nozzle 40 positioned at the outer side of the gas inlet valve cavity 23 so as to collect the compressed air entering from the outside and simultaneously supply gas to the main valve cavity 22 and the brake shoe gas receiving valve cavity 25, thereby ensuring that the main valve cavity 22 and the brake shoe gas receiving valve cavity 25 can have a better air linkage effect.
As can be seen from fig. 4, the air dividing nozzle 50 includes an air inlet 51 connected to external compressed air, and a converging cavity 52 respectively communicating with the brake shoe air inlet cavity 231 and the valve core air inlet cavity 232, and when compressed air enters the converging cavity 52 through the air inlet 51, a large amount of air is supplied to the side with high pressure according to the pressures of the brake shoe air receiving cavity 25 and the main valve cavity 22.
As shown in fig. 3 and 4, the gas distributing nozzle 50 is fixedly connected with the valve body 21 by any one or several methods of welding, bonding, bolting and riveting, so long as the gas distributing nozzle can be fixedly connected, other fixed connection methods are also within the protection scope of the present invention, and certain sealing measures are adopted if necessary.
As can be seen from fig. 1 and 2, the detection protrusion 43 protruding into the wear layer 41 of the brake shoe 40 has a wedge-shaped configuration so that the protruding detection protrusion can alarm in time when the wear layer of the brake shoe 40 is fast enough to wear.
More preferably, the number of the detecting protruding parts 43 is 2-4, and the detecting protruding parts 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 alarm accuracy and the safety and reliability of the whole railway vehicle brake shoe are improved.
In a more preferred embodiment, each of the said detecting protrusions 43 has a wedge-shaped structure having a depth of not more than 3cm, avoiding premature scrapping of the whole brake shoe 40, avoiding wastage, and, for railway vehicles requiring a large number of brake shoes, the overall brake shoe life is prolonged and the costs can be reduced to a greater extent.
From the automatic alarm device of fig. 1, the airtight detector 10 is disposed in the airtight groove 42 on the outer side of the back surface of the wear-resistant 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 has the following advantages: the airtight groove 42 and at least one detection protrusion 43 protruding toward the wear-resistant layer 41 are directly worn out to the detection protrusion 43 to leak after the brake shoe 40 works for a period of time, so that the detection can be quickly detected; another great benefit of this design is that the brake shoe 40 itself is simple in structural design, does not require additional formulation structure, does not require additional sealing, and saves manufacturing costs and time to achieve integration of the air tight detector 10 and the brake shoe 40, and is convenient to install and use. The detection personnel can conveniently detect the whole outer edge of the wear-resistant layer of the whole brake shoe, and the detection result is more accurate.
The airtight detector 10 is further provided with an airtight access opening 14 and/or a handle 12 on the outer side, wherein the airtight access opening 14 is mainly used for daily maintenance of the airtight detector 10, and the handle 12 is used for grasping and taking for mounting and dismounting, is used for facilitating mounting and dismounting, and maintains the sealing performance of the airtight detector, so that good detection is provided for a brake shoe.
As seen in fig. 5, the buzzer 30 has a buzzer housing 31, and a connection rod 32 penetrating through the buzzer housing 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, so that the buzzer 30 is triggered by acquiring an air source through the buzzer valve cavity 24. In a normal implementation process, the buzzer housing 31 needs to be sealed and fixedly connected with the valve body 21 of the buzzer alarm valve 20, and the connection mode can be as shown in fig. 5, and a groove matching type sealing matching structure is arranged between the valve body 21 and the buzzer base 33, and can also be directly placed, which is within the protection scope of the present invention.
The embodiments of the present invention are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present invention.
Claims (11)
1. Brake shoe wear reaches limit automatic alarm device, its characterized in that includes:
an airtight detector (10) arranged outside the back of the wear-resistant layer (41) of the brake shoe (40) and provided with an airtight cavity (11) and at least one detection protrusion (43) protruding toward the wear-resistant layer (41);
the buzzer 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 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 air receiving valve cavity (25), a spring (27) arranged at the top of the valve core (26), and a valve cover (28) for compressing the spring (27);
the air inlet valve cavity (23) comprises a brake shoe air inlet valve cavity (231) for supplying air to the brake shoe air receiving valve cavity (25) from the outside and a valve core air inlet cavity (232) for supplying air 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 air inlet valve cavity (231);
the buzzer valve cavity (24) is communicated with the buzzer (30) and is used for triggering the buzzer (30) to work and alarm when air is supplied to the buzzer;
one end of the brake shoe air-connection valve cavity (25) is communicated with the main valve cavity (22), and the other end of the brake shoe air-connection valve cavity is connected with the airtight cavity (11) through the sealing joint (13);
the valve core (26) is provided with a sealing boss (261) and a buzzing groove (262) which is axially recessed towards the center of the valve core and is arranged at a position corresponding to the valve core air inlet cavity (232).
2. The automatic brake shoe wear limit warning device of claim 1, wherein:
the valve core (26) is self-sealing with the boss (261) and extends to a spring support column (265) towards one end of the valve cover (28).
3. The automatic brake shoe wear limit warning device of claim 1, wherein:
and the valve core (26) is provided with a sealing groove (263, 264) at a position close to the sealing boss (261) and/or close to the buzzer groove (262), and the sealing groove (263, 264) is filled with a sealing element.
4. The automatic brake shoe wear limit warning device of claim 1, wherein:
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 distributing nozzle (50) comprises an air inlet (51) connected with external compressed air and a converging cavity (52) respectively communicated with the brake shoe air inlet valve cavity (231) and the valve core air inlet cavity (232).
5. The automatic brake shoe wear limit warning device of claim 4, wherein:
the gas distributing nozzle (50) is fixedly connected with the valve body (21) through any one or a plurality of modes of welding, bonding, bolting and riveting.
6. The automatic brake shoe wear limit warning device of claim 1, wherein:
the detection protrusion (43) protruding into the wear-resistant layer (41) has a wedge-shaped structure.
7. The automatic brake shoe wear limit warning device of claim 6, wherein:
the number of the detection protruding parts (43) is 2-4, and the detection protruding parts are uniformly distributed over the outer edge of the whole brake shoe.
8. The automatic brake shoe wear limit warning device of claim 6, wherein:
the depth of each of the detection protrusions (43) is not more than 3cm.
9. The automatic brake shoe wear limit warning device of any one of claims 1-8, wherein:
the airtight detector (10) is arranged in an airtight groove (42) on the outer side of the back surface of the wear-resistant layer (41) of the brake shoe (40), and the airtight groove (42) is positioned in the brake shoe (40) body.
10. The automatic brake shoe wear limit warning device of claim 9, wherein:
and the outer side of the airtight detector (10) is also provided with an airtight access hole (14) and/or a handle (12).
11. The automatic brake shoe wear limit warning device of claim 9, wherein:
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 |
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| CN114439871A CN114439871A (en) | 2022-05-06 |
| CN114439871B true 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 |
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| 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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| Publication number | Publication date |
|---|---|
| CN114439871A (en) | 2022-05-06 |
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