CN113776720A - Dynamic brake shoe pressure detection device - Google Patents
Dynamic brake shoe pressure detection deviceDownload PDFInfo
- Publication number
- CN113776720A CN113776720ACN202110905100.9ACN202110905100ACN113776720ACN 113776720 ACN113776720 ACN 113776720ACN 202110905100 ACN202110905100 ACN 202110905100ACN 113776720 ACN113776720 ACN 113776720A
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- Prior art keywords
- brake shoe
- metal
- pressure
- dynamic brake
- detection device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Translated fromChinese
Description
Technical Field
The invention relates to the technical field of rail vehicle braking systems, in particular to a dynamic brake shoe pressure detection device.
Background
With the development of railway transportation towards heavy load and high speed, in order to ensure the driving safety, the rail vehicle is inevitably required to have stable and sufficient braking force. Due to the design and the structure of the basic brake system, faults often occur, and even accidents such as brake force loss or band-type brakes occur. The pressure of each brake tile during braking can be grasped in time, on one hand, the data of the braking force of the railway vehicle can be obtained, and on the other hand, the brake fault can be found in time so as to prevent more serious accidents.
The existing mature technology can only detect the brake shoe pressure of the rail vehicle in a static state, and the rail vehicle can be put into use only by detaching a detection device after detection. Other more advanced technologies can detect the pressure of the dynamic brake shoe, but the structure of the brake shoe needs to be modified, while the structure of the brake shoe on a dynamic running vehicle is not allowed to be modified, and the brake shoe is synthesized by using a national standard high friction coefficient, and the size parameter of the brake shoe is fixed, so that the difficulty in modifying the brake shoe is extremely high; there are also some technologies to implement the detection of the dynamic brake shoe pressure by improving the structure of the existing tile support, for example, the chinese patent discloses a dynamic brake shoe pressure measuring device (application number: CN2017102645599), which improves the structure of the tile support, and the improvement of the structure of the tile support cannot evaluate the influence on the driving safety temporarily.
Disclosure of Invention
Aiming at the technical problem, the invention provides a device which can detect the pressure of the brake shoe of the railway vehicle under a dynamic condition without influencing the normal use of the brake shoe of the railway vehicle or changing a shoe support structure.
In order to achieve the purpose, the dynamic brake shoe pressure detection device provided by the invention is fixedly clamped between a brake shoe and a shoe support, and comprises a metal top shell, a metal bottom shell, a pressure guide body and a pressure sensor;
the edge of metal top shell and the edge sealing connection of metal drain pan and form the centre gripping chamber between metal top shell and the metal drain pan, the fixed conflict of the exposed surface of metal top shell in the inboard surface of tile support, the fixed conflict of the exposed surface of metal drain pan in the outside surface of brake shoe, pressure sensor and pressure guide body are by top to end centre gripping in the centre gripping intracavity.
When the vehicle brakes, the brake shoe support transmits the brake pressure to the brake shoe through the dynamic brake shoe pressure detection device, the pressure guide body transmits the brake pressure through the pressure sensor, and the brake force can be obtained by calculating and detecting the resistance change of the pressure sensor. Therefore, the dynamic brake shoe pressure is detected under the conditions that the normal use of the brake shoe is not influenced and the appearance of the shoe support is not changed, so that brake force data are provided for the rail vehicle in real time, a driver can better operate the rail vehicle conveniently, the fault of a basic brake system is early warned in real time, and the condition that the running safety of the rail vehicle is not influenced or the brake is damaged by insufficient brake force is prevented.
In the above technical solution, the present invention may be further modified as follows.
Preferably, the pressure sensor is a multipoint membrane pressure sensor.
Preferably, the pressure guide body comprises a plurality of sheet gaskets which correspond to the single-point pressure sensing areas of the pressure sensor one by one.
Preferably, the outer contour of the single sheet-like gasket is located inside the corresponding one-point pressure-sensitive area.
Preferably, the surface of the metal bottom shell facing the brake shoe is provided with a heat insulation cushion layer opposite to the single-point pressure sensing area of the pressure sensor.
Preferably, the metal top shell is of an arc curved surface structure matched with the tile support, the metal bottom shell is of an arc curved surface structure matched with the brake shoe, and the shape of the pressure sensor is matched with that of the metal top shell.
Preferably, buckles for fixing the dynamic brake shoe pressure detection device on the inner side surface of the shoe support are fixedly arranged on two sides of the metal bottom shell.
Preferably, a first through hole is formed in the middle of the metal top shell, a second through hole which is coaxial with the first through hole and is identical in shape is formed in the middle of the metal bottom shell, a limiting strip protruding out of the top surface of the metal bottom shell is arranged in the second through hole, the pressure sensor is provided with a avoiding hole avoiding the limiting strip, and the limiting strip is clamped in the first through hole and can move slightly along the axial direction of the first through hole.
Preferably, the sheet-like gasket is made of a non-metallic material having a low thermal conductivity.
Preferably, the metal top shell and the metal bottom shell are both made of metal materials with low heat conductivity coefficient and high hardness.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.
FIG. 1 is a schematic perspective view of a dynamic brake shoe pressure detecting device according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
in the drawings:
the metal top shell comprises ametal top shell 1, a first throughhole 11, ametal bottom shell 2, a second throughhole 21, asheet gasket 3, apressure sensor 4, a single-pointpressure sensing area 41, a heatinsulation cushion layer 5, abuckle 6 and alimiting strip 7.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 and fig. 2, the present embodiment discloses a dynamic brake shoe pressure detecting device, which includes ametal top shell 1, ametal bottom shell 2, a pressure guiding body and apressure sensor 4.
In this embodiment, the dynamic brake shoe pressure sensing device is fixedly clamped between the brake shoe and the shoe carrier without any modification to the structure of the brake shoe and the shoe carrier, which does not affect the normal use of the brake shoe and the shoe carrier.
As shown in fig. 1, the edge of themetal top shell 1 is connected with the edge of themetal bottom shell 2 in a sealing manner, and a clamping cavity is formed between themetal top shell 1 and themetal bottom shell 2, the exposed surface of themetal top shell 1 is fixedly abutted against the inner side surface of the tile support, and the exposed surface of themetal bottom shell 2 is fixedly abutted against the outer sidesurface pressure sensor 4 of the brake shoe and the pressure guide body are clamped in the clamping cavity from top to bottom.
When the vehicle brakes, the brake shoe support transmits the brake pressure to the brake shoe through the dynamic brake shoe pressure detection device, the pressure guide body transmits the brake pressure through thepressure sensor 4, and the brake force can be obtained by calculating and detecting the resistance change of thepressure sensor 4. Therefore, the dynamic brake shoe pressure can be detected under the conditions of not influencing the normal use of the brake shoe and not changing the appearance of the shoe support, so that brake force data are provided for the rail vehicle in real time, a driver can better operate the rail vehicle conveniently, the fault of a basic brake system is early warned in real time, and the condition that the running safety of the rail vehicle is not influenced or the brake is damaged by insufficient brake force is prevented.
In this embodiment, thepressure sensor 4 is a multi-point film pressure sensor, and the compressive strength of the multi-point film pressure sensor is not lower than 5MPa, so as to meet the requirement of the braking pressure on the measuring range.
As shown in fig. 2, the surface of themetal bottom shell 2 facing the brake shoe is provided with aheat insulation cushion 5 opposite to the single-pointpressure sensing area 41 of thepressure sensor 4.
In this embodiment, the metaltop shell 1, themetal bottom shell 2 and theheat insulation cushion 5 are made of metal materials with low heat conductivity coefficient and high hardness, such as 630 stainless steel, so that heat generated during brake of the brake shoe can be reduced to conduct to the multipoint film pressure sensor, the multipoint film pressure sensor is effectively protected, theheat insulation cushion 5 is welded on themetal bottom shell 2 to form theheat insulation cushion 5 with extremely high stability, and the multipoint film pressure sensor is adhered to the inner side wall of themetal top shell 1 through a double-sided adhesive tape, so that the fixing is convenient. The thicknesses of themetal top shell 1 and themetal bottom shell 2 are between 0.5mm and 0.8mm, preferably 0.5mm, so that the total thickness of the dynamic brake shoe pressure detection device can be reduced as much as possible while the metaltop shell 1 and themetal bottom shell 2 are not deformed under the action of friction force in the shearing direction.
As shown in fig. 2, the pressure guiding body includes a plurality ofsheet gaskets 3 corresponding to the single-pointpressure sensing areas 41 of thepressure sensor 4 one-to-one, thesheet gaskets 3 are made of non-metal materials with low thermal conductivity, and the outer contour of eachsheet gasket 3 is located at the inner side of the corresponding single-pointpressure sensing area 41, that is, the specification of eachsheet gasket 3 is smaller than that of the corresponding single-pointpressure sensing area 41, so that the braking pressure is transmitted through the single-pointpressure sensing area 41. The thickness of the pressure guide body is between 0.3mm and 0.5mm, preferably 0.3mm, and the sheet-shaped gasket 3 plays a role of isolation, so that thepressure sensor 4 is not in contact with themetal bottom shell 2, and the total thickness of the dynamic brake shoe pressure detection device is reduced.
In this embodiment, themetal top shell 1 has an arc curved surface structure adapted to the shoe holder, themetal bottom shell 2 has an arc curved surface structure adapted to the brake shoe, and the shape of thepressure sensor 4 is adapted to the shape of themetal top shell 1, so that each single-pointpressure sensing area 41 is distributed to be adapted to the contact surface of the brake shoe and the shoe holder, so that the brake pressure is completely transmitted through the single-point pressure sensing area.
In this embodiment, two sides of themetal bottom shell 2 are fixedly provided with afastener 6 for fixing the dynamic brake shoe pressure detection device on the inner side surface of the tile support, and thefastener 6 is preferably an S-shaped wing plate fastener matched with the tile support mounting hole, so as to conveniently and quickly fix the dynamic brake shoe pressure detection device on the tile support.
As shown in fig. 2, first through-hole 11 has been seted up at the middle part ofmetal top shell 1, the second through-hole 21 coaxial and the unanimous shape with first through-hole 11 is seted up at the middle part ofmetal drain pan 2, set up spacing 7 of protrusionmetal drain pan 2 top surface in the second through-hole 21,pressure sensor 4 has the hole of dodging of avoidingspacing 7, spacing 7 card is located in first through-hole 11 and can follow first through-hole 11 axial micrometric movement, the preferred thickness ofspacing 7 is 2mm-3mm, the material is 603 stainless steel's metal card strip, because of spacing 7 upper and lower card establishes in first through-hole 11, consequently, metaltop shell 1 andmetal drain pan 2 can't realize radial relative movement, can avoid metaltop shell 1 andmetal drain pan 2 radial relative movement to damage multiple spotfilm pressure sensor 4.
In conclusion, the dynamic brake shoe pressure detection device is suitable for being installed between the brake shoe and the shoe support in shape, can detect the dynamic brake shoe pressure under the condition that the normal and safe operation of the railway vehicle is not influenced, can provide braking force data for a driver of the railway vehicle in real time so that the driver can better operate the railway vehicle, can give an early warning to the fault of a basic braking system in time, and prevents the running safety of the railway vehicle from being damaged by insufficient braking force or band-type brakes. Meanwhile, the dynamic brake shoe pressure detection device can also detect the rail vehicle under the static condition, and both dynamic and static detection can be realized.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (10)
1. A dynamic brake shoe pressure detection device is fixedly clamped between a brake shoe and a shoe support and is characterized by comprising a metal top shell (1), a metal bottom shell (2), a pressure guide body and a pressure sensor (4);
the edge of metal top shell (1) and the edge sealing connection of metal drain pan (2), and form the centre gripping chamber between metal top shell (1) and metal drain pan (2), the fixed conflict in the inboard surface of tile support of the exposed surface of metal top shell (1), the fixed conflict in the outside surface of brake shoe of the exposed surface of metal drain pan (2), pressure sensor (4) and lead the pressure body by top to end centre gripping in the centre gripping intracavity.
2. A dynamic brake shoe pressure sensing device as claimed in claim 1, characterized in that said pressure sensor (4) is a multipoint membrane pressure sensor.
3. The dynamic brake shoe pressure detection device as claimed in claim 2, wherein the pressure guide body comprises a plurality of sheet-shaped gaskets (3) corresponding to the single-point pressure sensing areas (41) of the pressure sensor (4) one by one.
4. A dynamic brake shoe pressure sensing device as claimed in claim 3, characterized in that the outer contour of the individual sheet shim (3) is located inside the edge of the corresponding single point pressure sensing area (41).
5. The dynamic brake shoe pressure detection device according to claim 2, wherein the surface of the metal bottom shell (2) facing the brake shoe is provided with a heat insulation cushion layer (5) opposite to the single-point pressure sensing area (41) of the pressure sensor (4).
6. The dynamic brake shoe pressure detection device according to claim 1, wherein the metal top shell (1) is of a circular arc curved surface structure matched with the shoe support, the metal bottom shell (2) is of a circular arc curved surface structure matched with the brake shoe, and the shape of the pressure sensor (4) is matched with the shape of the metal top shell (1).
7. The dynamic brake shoe pressure detection device according to claim 1, wherein two sides of the metal bottom shell (2) are fixedly provided with buckles (6) for fixing the dynamic brake shoe pressure detection device on the inner side surface of the shoe support.
8. The dynamic brake shoe pressure detection device according to claim 1, wherein a first through hole (11) is formed in the middle of the metal top shell (1), a second through hole (21) which is coaxial with the first through hole (11) and has the same shape is formed in the middle of the metal bottom shell (2), a limiting strip (7) protruding out of the top surface of the metal bottom shell (2) is arranged in the second through hole (21), the pressure sensor (4) is provided with a avoiding hole avoiding the limiting strip (7), and the limiting strip (7) is clamped in the first through hole (11) and can move slightly along the axial direction of the first through hole (11).
9. A dynamic brake shoe pressure sensing device as claimed in any one of claims 3 or 4, characterized in that the said sheet-like shim (3) is made of non-metallic material with low thermal conductivity.
10. The dynamic brake shoe pressure detection device according to any one of claims 1 to 8, wherein the metal top shell (1) and the metal bottom shell (2) are made of metal material with low thermal conductivity and high hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905100.9ACN113776720B (en) | 2021-08-08 | 2021-08-08 | Dynamic brake shoe pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905100.9ACN113776720B (en) | 2021-08-08 | 2021-08-08 | Dynamic brake shoe pressure detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113776720Atrue CN113776720A (en) | 2021-12-10 |
| CN113776720B CN113776720B (en) | 2025-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110905100.9AActiveCN113776720B (en) | 2021-08-08 | 2021-08-08 | Dynamic brake shoe pressure detection device |
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| Country | Link |
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| CN (1) | CN113776720B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2524996Y (en)* | 2002-03-12 | 2002-12-11 | 襄樊铁路分局襄北机务段 | Work condition detector for locomotive unit brake |
| JP2010071854A (en)* | 2008-09-19 | 2010-04-02 | Central Japan Railway Co | Device for detecting pressing force of foundation brake device and device for calculating efficiency of foundation brake |
| CN104813060A (en)* | 2013-04-17 | 2015-07-29 | 意大利Itt有限责任公司 | Method for manufacturing a braking element with integrated sensor, in particular a brake pad, brake pad with integrated sensor, vehicle braking system and associated method |
| US20160076956A1 (en)* | 2014-09-15 | 2016-03-17 | Westinghouse Air Brake Technologies Corporation | Brake Force Sensor Arrangement for a Brake Unit |
| DE102018107521A1 (en)* | 2018-03-28 | 2019-10-02 | Sebastian Sauer | Contact pressure measuring and testing device for detecting the contact force generated by a friction body of a friction brake unit on a stationary vehicle wheel of a vehicle |
| CN111256898A (en)* | 2020-02-26 | 2020-06-09 | 中车齐齐哈尔车辆有限公司 | Brake shoe braking force testing component |
| CN211685054U (en)* | 2020-02-26 | 2020-10-16 | 中车齐齐哈尔车辆有限公司 | Brake pad braking force testing component |
| CN215910035U (en)* | 2021-08-08 | 2022-02-25 | 重庆市宇红轨道车辆配件有限公司 | Dynamic brake shoe pressure detection device |
- 2021
- 2021-08-08CNCN202110905100.9Apatent/CN113776720B/enactiveActive
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2524996Y (en)* | 2002-03-12 | 2002-12-11 | 襄樊铁路分局襄北机务段 | Work condition detector for locomotive unit brake |
| JP2010071854A (en)* | 2008-09-19 | 2010-04-02 | Central Japan Railway Co | Device for detecting pressing force of foundation brake device and device for calculating efficiency of foundation brake |
| CN104813060A (en)* | 2013-04-17 | 2015-07-29 | 意大利Itt有限责任公司 | Method for manufacturing a braking element with integrated sensor, in particular a brake pad, brake pad with integrated sensor, vehicle braking system and associated method |
| US20160076956A1 (en)* | 2014-09-15 | 2016-03-17 | Westinghouse Air Brake Technologies Corporation | Brake Force Sensor Arrangement for a Brake Unit |
| DE102018107521A1 (en)* | 2018-03-28 | 2019-10-02 | Sebastian Sauer | Contact pressure measuring and testing device for detecting the contact force generated by a friction body of a friction brake unit on a stationary vehicle wheel of a vehicle |
| CN111256898A (en)* | 2020-02-26 | 2020-06-09 | 中车齐齐哈尔车辆有限公司 | Brake shoe braking force testing component |
| CN211685054U (en)* | 2020-02-26 | 2020-10-16 | 中车齐齐哈尔车辆有限公司 | Brake pad braking force testing component |
| CN215910035U (en)* | 2021-08-08 | 2022-02-25 | 重庆市宇红轨道车辆配件有限公司 | Dynamic brake shoe pressure detection device |
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| Publication number | Publication date |
|---|---|
| CN113776720B (en) | 2025-07-08 |
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