A test device for verifying the static torsional strength of a fixed brake caliper

Abstract

The present invention discloses a test device for verifying the static torsional strength of a fixed brake caliper, comprising a workbench, a driving assembly is arranged on the left side of the workbench, a fixed assembly is arranged on the right side of the workbench, a brake disc is arranged on the driving assembly, and the brake disc can rotate under the action of the driving assembly, a fixed brake caliper capable of realizing brake disc braking is arranged on the fixed assembly, and a transmission assembly is arranged between the brake disc and the fixed brake caliper, and the transmission assembly is used to transmit the torque generated by the driving assembly to the fixed brake caliper through the brake disc. When the entire test device is tested, the torque is directly transmitted through the hinge pin, rather than the torque transmission through the contact between the friction lining and the brake disc in the prior art, so that the device can meet the braking torque test requirement that the static torsional strength of the fixed brake caliper reaches three times the 1g deceleration.

Description

Technical Field

[0001] The invention belongs to the technical field of static torsion testing of a fixed brake caliper, and in particular relates to a testing device for verifying the static torsion strength of a fixed brake caliper. Background Art

[0002] With the rapid development of the automobile industry in recent years, the popularity of fixed brake calipers in new energy vehicles and high-end fuel vehicles has increased significantly due to their cool appearance, fast braking response, and good rigidity. Compared with traditional floating brake calipers, fixed brake calipers use opposing piston working logic. The brake calipers are equipped with pistons on both sides. When the brake pedal is pressed, the pistons can be pushed out at the same time to clamp the brake pads. The advantage is that it solves the common problem of non-linear braking of floating brake calipers, bringing a smoother and more delicate braking feel.

[0003] Fixed brake calipers generally have a multi-piston layout. Another advantage of the multi-piston layout is that it can be used with brake pads with a larger friction area. The larger friction area can provide better braking performance. On the other hand, new energy vehicles currently generally have stronger acceleration performance than traditional fuel vehicles and have a higher weight, so it is very necessary to equip them with fixed brake calipers with better braking performance.

[0004] During the braking process, the fixed brake caliper has to withstand huge braking torque, which is more than twice that of the floating brake caliper. Therefore, high requirements are placed on the torsional strength of the brake caliper. The commonly used test method, that is, the test method of the floating brake caliper, is to use hydraulic pressure to make the brake caliper work and clamp the rotating brake disc, that is, to use the static friction between the friction plate and the brake caliper to achieve the braking torque. However, the industry generally requires that the static torsional strength of the fixed brake caliper needs to reach three times the braking torque of 1g deceleration (about 12000N·m). When using this test method, the above requirements cannot be met. Summary of the invention

[0005] The present invention proposes a testing device for verifying the static torsional strength of a fixed brake caliper, so that when testing the static torsional strength of the fixed brake caliper, the braking torque test requirement of the static torsional strength of the fixed brake caliper reaching three times the 1g deceleration can be met.

[0006] To this end, the technical solution adopted by the present invention is: a testing device for verifying the static torsional strength of a fixed brake caliper, comprising a workbench, a driving component is arranged on the left side of the workbench, a fixed component is arranged on the right side of the workbench, a brake disc is arranged on the driving component, and the brake disc can rotate under the action of the driving component, a fixed brake caliper capable of realizing brake disc braking is arranged on the fixed component, a transmission component is arranged between the brake disc and the fixed brake caliper, and the transmission component is used to transmit the torque generated by the driving component to the fixed brake caliper through the brake disc.

[0007] As a preferred embodiment of the above scheme, the transmission component includes a friction lining that can be installed in a fixed brake caliper, and two connecting grooves are provided at intervals on the side of the friction lining close to the brake disc, and two hinge pins are penetrated through the brake disc, and both ends of each hinge pin are respectively extended into the connecting groove on the corresponding side, and a gap is left between the friction lining and the brake disc during testing.

[0008] Further preferably, the friction lining is made of a high-strength metal material.

[0009] Further preferably, the length of each connecting groove is greater than the effective braking radius of the fixed brake caliper.

[0010] Further preferably, the driving assembly comprises a static torsion motor arranged on the workbench via a static torsion motor seat, and a connecting assembly is arranged between an output end of the static torsion motor and the brake disc.

[0011] Further preferably, the connecting assembly comprises a connecting shaft, one end of the connecting shaft is connected to the output end of the static torsion motor via a coupling, and the other end of the connecting shaft is provided with a connecting flange for mounting the brake disc.

[0012] Further preferably, a torque sensor for testing torque is provided on the connecting shaft.

[0013] Further preferably, the fixing assembly comprises a fixing seat arranged on the workbench, and a mounting plate for mounting a fixed brake caliper is provided at one end of the fixing seat via a fixing flange.

[0014] Further preferably, a detection component for detecting the rotation angle of the brake disc is provided, the detection component comprises an encoder, the encoder is arranged on the static torsion motor seat through an encoder bracket, and a synchronous belt component is arranged between the encoder and the connecting shaft.

[0015] The beneficial effects of the present invention are as follows: when the entire test device is conducting a test, the torsion is transmitted to the brake disc through the driving component, and then the brake disc transmits the torque to the fixed brake caliper through the transmission component. At the same time, since the fixed brake caliper is fixedly installed, it can be used to test the static torsional strength of the fixed brake caliper; and due to the arrangement of the friction lining and the hinge pin, when the torque is transmitted, the torque is directly transmitted through the hinge pin, rather than adopting the prior art of transmitting the torque through the contact between the friction lining and the brake disc, so that the device can meet the braking torque test requirement that the static torsional strength of the fixed brake caliper reaches three times the 1g deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 For the purpose of illustrating the present invention Figure 1 .

[0017] Figure 2 For the purpose of illustrating the present invention Figure 2 .

[0018] Figure 3 It is a schematic diagram of the transmission component in the present invention.

[0019] Figure 4 It is a schematic diagram of the installation of the friction lining in the present invention.

[0020] Figure 5 It is a schematic diagram of the installation of the hinge pin in the present invention.

[0021] Figure 6 It is a schematic diagram of the friction lining in the present invention.

[0022] Figure 7 This is a torque time diagram when the present invention is used for testing.

[0023] Figure markings: workbench-1, brake disc-2, fixed brake caliper-3, friction lining-4, connecting groove-4a, hinge pin-5, static torque motor seat-6, static torque motor-7, connecting shaft-8, coupling-9, connecting flange-10, torque sensor-11, fixed seat-12, fixed flange-13, mounting plate-14, encoder-15, encoder bracket-16. DETAILED DESCRIPTION

[0024] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0025] like Figure 1-Figure 7 As shown, a test device for verifying the static torsional strength of a fixed brake caliper is mainly composed of a workbench 1, a brake disc 2, a fixed brake caliper 3, a driving assembly, a fixing assembly and a transmission assembly, wherein the brake disc 2 is arranged on the left side of the workbench through the driving assembly, and the brake disc 2 can rotate under the action of the driving assembly, the fixed brake caliper 3 is arranged on the right side of the workbench through the fixing assembly, and a transmission assembly is arranged between the brake disc 2 and the fixed brake caliper 3, so that the torque generated by the driving assembly is transmitted to the fixed brake caliper 3 through the brake disc 2 and the transmission assembly, thereby realizing the static torsional strength test of the fixed brake caliper.

[0026] The specific structure of the transmission component includes a friction lining 4 that can be installed in the fixed brake caliper 3. The structure of the friction lining is the same as the original lining structure of the fixed brake caliper, so it is easy to install. In order to achieve the transmission of torque, two connection grooves 4a are arranged at intervals on the side of the friction lining 4 close to the brake disc 2, and two hinge pins 5 are arranged through the brake disc 2, and both ends of each hinge pin 5 are respectively extended into the connection groove 4a on the corresponding side. During the test, a gap is left between the friction lining 4 and the brake disc 2, so that the torque is transmitted through the hinge pin.

[0027] Preferably, the friction lining is made of high-strength metal material, such as high manganese steel, etc. At the same time, in order to prevent the hinge pin from being separated from the connection groove during braking, the length of each connection groove 4a is greater than the effective braking radius of the fixed brake caliper. The effective braking radius of the fixed brake caliper refers to the distance from the rotation center to the force center of the friction lining. The depth and width of the connection groove are determined according to the torque required to be borne and the size of the fixed brake caliper.

[0028] The specific structure of the driving assembly includes a static torsion motor 7 arranged on the workbench 1 through a static torsion motor seat 6, and a connecting assembly is arranged between the output end of the static torsion motor 7 and the brake disc 2. The connecting assembly includes a connecting shaft 8, wherein one end of the connecting shaft 8 is connected to the output end of the static torsion motor 7 through a coupling 9, and the other end of the connecting shaft 8 is provided with a connecting flange 10 for mounting the brake disc 2.

[0029] In order to facilitate the detection of the torque applied to the fixed brake caliper, a torque sensor 11 for testing the torque is provided on the connecting shaft 8. At the same time, a detection component for detecting the rotation angle of the brake disc 2 is also provided, and the detection component includes an encoder 15, which is provided on the static torque motor seat 6 through an encoder bracket 16, and a synchronous belt assembly is provided between the encoder 15 and the connecting shaft 8.

[0030] The specific structure of the fixing assembly includes a fixing seat 12 arranged on the workbench 1 , and a mounting plate 14 for mounting the fixed brake caliper 3 is arranged at one end of the fixing seat 12 through a fixing flange 13 .

[0031] In order to facilitate the adjustment of torque, a reduction box can be provided at the output end of the static torque motor. In this case, the output shaft of the reduction box and the connecting shaft are connected by a coupling. The static torque strength test of the fixed brake caliper is carried out using this device, and the following results are obtained: Figure 7 From the torque-time diagram shown, it can be seen that the system is stable during the torque loading stage, and there is no slippage between the brake disc and the friction lining; the system has good rigidity, and the slope of the torque loading curve remains basically consistent, thus effectively ensuring that the fixed brake caliper can withstand the braking torque, thereby facilitating the strength of the brake caliper.

Claims

1. A testing device for verifying the static torsional strength of a fixed brake caliper, comprising a workbench (1), characterized in that: A drive assembly is arranged on the left side of the workbench (1), and a fixed assembly is arranged on the right side of the workbench; a brake disc (2) is arranged on the drive assembly, and the brake disc (2) can rotate under the action of the drive assembly; a fixed brake caliper (3) is arranged on the fixed assembly and can brake the brake disc (2); a transmission assembly is arranged between the brake disc (2) and the fixed brake caliper (3), and the transmission assembly is used to transmit the torque generated by the drive assembly to the fixed brake caliper (3) through the brake disc (2); The transmission component comprises a friction lining (4) which can be installed in a fixed brake caliper (3), two connection grooves (4a) are arranged at intervals on a side of the friction lining (4) close to the brake disc (2), two hinge pins (5) are arranged through the brake disc (2), and both ends of each hinge pin (5) extend into the connection groove (4a) on the corresponding side, and a gap is left between the friction lining (4) and the brake disc (2) during testing; The drive assembly comprises a static torsion motor (7) arranged on a workbench (1) via a static torsion motor seat (6), a connection assembly is arranged between an output end of the static torsion motor (7) and a brake disc (2), the connection assembly comprises a connection shaft (8), one end of the connection shaft (8) is connected to the output end of the static torsion motor (7) via a coupling (9), and the other end of the connection shaft (8) is provided with a connection flange (10) for mounting the brake disc (2).

2. The testing device for verifying the static torsional strength of a fixed brake caliper according to claim 1, characterized in that: The friction lining (4) is made of a high-strength metal material.

3. The testing device for verifying the static torsional strength of a fixed brake caliper according to claim 1, characterized in that: The length of each connecting groove (4a) is greater than the distance from the rotation center to the force center of the friction lining.

4. The testing device for verifying the static torsional strength of a fixed brake caliper according to claim 1, characterized in that: The connecting shaft (8) is provided with a torque sensor (11) for testing torque.

5. The testing device for verifying the static torsional strength of a fixed brake caliper according to claim 1, characterized in that: The fixing assembly comprises a fixing seat (12) arranged on a workbench (1), and one end of the fixing seat (12) is provided with a mounting plate (14) for mounting a fixed brake caliper (3) via a fixing flange (13).

6. The testing device for verifying the static torsional strength of a fixed brake caliper according to claim 1, characterized in that: A detection component for detecting the rotation angle of the brake disc (2) is also provided, the detection component comprising an encoder (15), the encoder (15) being arranged on the static torque motor seat (6) via an encoder bracket (16), and a synchronous belt component being arranged between the encoder (15) and the connecting shaft (8).

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