CN214843788U - Calibration device for testing pin shaft load of brake shoe of axle of commercial vehicle - Google Patents
Calibration device for testing pin shaft load of brake shoe of axle of commercial vehicle Download PDFInfo
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- CN214843788U CN214843788U CN202120807280.2U CN202120807280U CN214843788U CN 214843788 U CN214843788 U CN 214843788U CN 202120807280 U CN202120807280 U CN 202120807280U CN 214843788 U CN214843788 U CN 214843788U
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- brake shoe
- pin shaft
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- calibration device
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Abstract
The utility model provides a calibration device for be used for commercial car axle brake shoe round pin axle load test, its characterized in that: the calibration device comprises an actuator, a clamping plate, a limiting plate, a bracket and a strain sensor; a base plate is arranged on the force application end surface of the actuator, and the clamp plate is connected with the base plate through a bolt; the bottom of the bracket is fixedly arranged, and the limiting plate is connected with the upper part of the bracket; a first through hole is formed in the left side face of the middle of the clamping plate, and a counter bore is formed in the left end of the first through hole; a second through hole is formed in the right side face of the middle of the limiting plate; the strain sensor is arranged on the brake shoe pin shaft and used for detecting the strain of the brake shoe pin shaft under load. By adopting the calibration device, the load and the strain of the brake shoe pin shaft can be calibrated, so that the corresponding load level can be obtained by testing the strain of the brake shoe pin shaft on a real vehicle.
Description
Technical Field
The utility model relates to an automobile manufacturing technical field, especially a calibration device that is used for commercial car axle brake shoe round pin axle load test.
Background
The brake mechanism of the commercial vehicle axle adopts a brake shoe pin shaft to connect and fix the shoe plate, the brake shoe pin shaft can bear certain load when the vehicle is in braking or other working conditions, when the brake shoe pin shaft is designed, the actual load level of the brake shoe pin shaft under the working conditions of vehicle braking, turning and the like needs to be obtained, and then checking calculation is carried out to determine whether the design is reliable or not and whether the use requirement is met or not. Due to the complexity of the structure and the use condition of the brake mechanism, the accurate load level of the brake mechanism cannot be obtained through CAE analysis and calculation, and on the other hand, due to the structural and spatial limitations of the brake mechanism, a force sensor or a torque sensor cannot be installed on a brake shoe pin shaft of the brake mechanism, so that the load level of the brake shoe pin shaft cannot be directly tested through a real vehicle.
SUMMERY OF THE UTILITY MODEL
To the problem in the background art, the utility model provides a calibration device for commercial car axle brake shoe round pin axle load test to among the solution prior art, be difficult to the problem of direct test axle brake shoe round pin axle load level.
The utility model aims at realizing through the technical scheme, it is including:
the utility model provides a calibration device for be used for commercial car axle brake shoe round pin axle load test, calibration device is used for demarcating the load of brake shoe round pin axle and meeting an emergency the relation, the brake shoe round pin axle includes columniform head and body, the diameter of head is greater than the diameter of body, its innovation point lies in: the calibration device comprises an actuator, a clamping plate, a limiting plate, a bracket and a strain sensor; a base plate is arranged on the force application end surface of the actuator, the clamp plate is connected with the base plate through a bolt, and the right side surface of the base plate is opposite to the left side surface of the clamp plate; the bottom of the bracket is fixedly arranged, the limiting plate is connected with the upper part of the bracket, and the right side surface of the limiting plate is attached to the left side surface of the bracket; a first through hole is formed in the left side face of the middle of the clamping plate, a counter bore is formed in the left end of the first through hole, the diameter of the first through hole is matched with that of the body, the diameter of the counter bore is matched with that of the head, and the depth of the counter bore is smaller than the thickness of the head; a second through hole is formed in the right side face of the middle of the limiting plate, the diameter of the second through hole is matched with that of the body, and the axis of the first through hole is collinear with that of the actuator; the strain sensor is arranged on the brake shoe pin shaft and used for detecting the strain of the brake shoe pin shaft under load.
Further, the limiting plate is connected with the support through a bolt, so that the limiting plate can be replaced according to brake shoe pin shafts of different models.
Due to the adoption of the technical scheme, the utility model discloses following advantage has: the calibration device can be used for obtaining the relation function of the load borne by the brake shoe pin shaft and the strain generated in advance, so that the calibration coefficient is obtained, the strain value of the brake shoe pin shaft on the real vehicle under various working conditions is tested, and the load level of the brake shoe pin shaft on the real vehicle can be calculated through the calibration coefficient. The calibration device is simple in structure and good in universality, and greatly reduces the cost and difficulty of the brake shoe pin shaft load test.
Drawings
The drawings of the present invention are described below.
Fig. 1 is a schematic view of the installation structure of the present invention.
In the figure: 1. a brake shoe pin shaft; 2. an actuator; 3. a splint; 4. a limiting plate; 5. a support; 6. a strain sensor; 7. a base plate; 11. a head portion; 12. a body.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The calibration device for the load test of the axle brake shoe pin shaft of the commercial vehicle as shown in the attached drawing 1 is used for calibrating the load and strain relation of the brake shoe pin shaft 1, the brake shoe pin shaft 1 comprises a cylindrical head 11 and a body 12, the diameter of the head 11 is larger than that of the body 12, and the calibration device comprises an actuator 2, a clamping plate 3, a limiting plate 4, a support 5 and a strain sensor 6; a base plate 7 is arranged on the force application end face of the actuator 2, the clamp plate 3 is connected with the base plate 7 through a bolt, and the right side face of the base plate 7 is opposite to the left side face of the clamp plate 3; the bottom of the bracket 5 is fixedly arranged, the limiting plate 4 is connected with the upper part of the bracket 5 through a bolt, and the right side surface of the limiting plate 4 is attached to the left side surface of the bracket 5; a first through hole is formed in the left side face of the middle of the clamping plate 3, a counter bore is formed in the left end of the first through hole, the diameter of the first through hole is matched with that of the body 12, the diameter of the counter bore is matched with that of the head 11, and the depth of the counter bore is smaller than the thickness of the head 11; a second through hole is formed in the right side face of the middle of the limiting plate 4, the diameter of the second through hole is matched with that of the body 12, and the axis of the first through hole is collinear with that of the actuator 2; the strain sensor 6 is arranged on the brake shoe pin shaft 1 and used for detecting the strain of the brake shoe pin shaft 1 under load.
When the brake shoe pin shaft structure is used, the body of the brake shoe pin shaft penetrates into the first through hole of the clamping plate, the head of the brake shoe pin shaft is sleeved in the counter bore of the clamping plate, then the clamping plate is connected with the base plate through the bolt, the end face of the head of the brake shoe pin shaft is in contact with the right side face of the base plate, a certain gap is reserved between the clamping plate and the base plate to ensure that a load applied by the actuator directly acts on the brake shoe pin shaft, then the positions of the actuator and the brake shoe pin shaft are adjusted, the end part of the main body of the brake shoe pin shaft is inserted into the second through hole of the limiting plate, and then the strain sensor is arranged on the surface of the main body of the brake shoe pin shaft. After the installation is finished, a plurality of groups of static axial forces are applied through the actuator, corresponding strain data of the brake shoe pin shaft in the process are collected through the strain sensor, a relation function of load and strain is obtained by utilizing the relation between different acting forces and corresponding strains, and the calibration coefficient is obtained. Then, only the strain data of the brake shoe pin shaft under each working condition needs to be tested on the real vehicle (the strain sensor is simple to install, the occupied space is small, and therefore the strain can be directly tested on the real vehicle), namely the actual load level data of the brake shoe pin shaft under each working condition can be calculated through the calibration coefficient.
Claims (2)
1. The utility model provides a calibration device for be used for commercial car axle brake shoe round pin axle load test, calibration device is used for demarcating the load and the strain relation of brake shoe round pin axle (1), brake shoe round pin axle (1) includes columniform head (11) and body (12), the diameter of head (11) is greater than the diameter of body (12), its characterized in that: the calibration device comprises an actuator (2), a clamping plate (3), a limiting plate (4), a bracket (5) and a strain sensor (6); a base plate (7) is arranged on the force application end face of the actuator (2), the clamp plate (3) is connected with the base plate (7) through a bolt, and the right side face of the base plate (7) is opposite to the left side face of the clamp plate (3); the bottom of the support (5) is fixedly arranged, the limiting plate (4) is connected with the upper part of the support (5), and the right side surface of the limiting plate (4) is attached to the left side surface of the support (5); a first through hole is formed in the left side face of the middle of the clamping plate (3), a counter bore is formed in the left end of the first through hole, the diameter of the first through hole is matched with that of the body (12), the diameter of the counter bore is matched with that of the head (11), and the depth of the counter bore is smaller than the thickness of the head (11); a second through hole is formed in the right side face of the middle of the limiting plate (4), the diameter of the second through hole is matched with that of the body (12), and the axis of the first through hole is collinear with that of the actuator (2); the strain sensor (6) is arranged on the brake shoe pin shaft (1) and used for detecting the strain of the brake shoe pin shaft (1) under load.
2. The calibration device for the axle brake shoe pin shaft load test of the commercial vehicle as claimed in claim 1, wherein: the limiting plate (4) is connected with the bracket (5) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807280.2U CN214843788U (en) | 2021-04-20 | 2021-04-20 | Calibration device for testing pin shaft load of brake shoe of axle of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807280.2U CN214843788U (en) | 2021-04-20 | 2021-04-20 | Calibration device for testing pin shaft load of brake shoe of axle of commercial vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN214843788U true CN214843788U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120807280.2U Active CN214843788U (en) | 2021-04-20 | 2021-04-20 | Calibration device for testing pin shaft load of brake shoe of axle of commercial vehicle |
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| CN (1) | CN214843788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354059A (en) * | 2021-12-24 | 2022-04-15 | 贵州航天凯山石油仪器有限公司 | Calibration method and device of non-bearing type load measuring instrument |
-
2021
- 2021-04-20 CN CN202120807280.2U patent/CN214843788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354059A (en) * | 2021-12-24 | 2022-04-15 | 贵州航天凯山石油仪器有限公司 | Calibration method and device of non-bearing type load measuring instrument |
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Address after: 401122 No.1, huanghuan North Road, Jinshan Avenue, northern New District, Yubei District, Chongqing Patentee after: SAIC Hongyan Automobile Co.,Ltd. Address before: 401122 No.1, huanghuan North Road, Jinshan Avenue, northern New District, Yubei District, Chongqing Patentee before: SAIC-IVECO HONGYAN commercial Vehicle Co.,Ltd. |