Brake cable fatigue testing device

Abstract

The utility model relates to the technical field of brake cable fatigue test devices, and discloses a brake cable fatigue test device, which comprises a test board, a brake cable, a force application spring, a weighing sensor, a power mechanism, an eccentric disc and a connecting rod, the two ends of the brake cable extend to the right sides of the two linear bearings correspondingly. One end of the brake cable is inserted into the positioning hole and the gap of the force application spring through the two ends of the U-shaped positioning insertion rod respectively, the deformation length of the force application spring can be adjusted, the brake cable does not need to be disassembled from a bolt on the force application spring and fixed again, and therefore adjustment between the brake cable and the force application spring is more convenient and rapid. The end, close to the eccentric disc, of the brake cable can rotate through the screw, so that the connecting rod and the adjusting block can slide on the front face of the sliding base to adjust the relative position, the step of disassembling bolts from the force application spring and the eccentric disc for reinstallation is not needed, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of brake line fatigue testing devices, in particular to a brake line fatigue testing device. Background Art

[0002] Braking safety performance is an important indicator for whether electric vehicles are qualified. Braking performance is divided into braking distance, braking force, braking durability, and brake line durability. Therefore, the brake line needs to be fatigue tested after production.

[0003] For example, the Chinese patent authorization announcement number is CN213180703U, an electric vehicle brake line fatigue test device, including a test platform, a brake line bracket is arranged on the left side of the upper surface of the test platform, a lifting bracket is arranged on the left side of the upper surface of the test platform, a brake line is arranged on the brake line bracket, the lifting bracket is supported on the lower side of the brake line, two linear bearings are arranged on the right side of the upper surface of the test platform, the two ends of the brake line are respectively inserted into the two linear bearings and extend to the right side of the two linear bearings, the right end of the brake line is connected to a force spring, the other end of the force spring is connected to a weighing sensor, and the weighing sensor is fixedly connected to the right side of the upper surface of the test platform;

[0004] The existing technology solves the problem that the test force value cannot be adjusted at will when the weight is hung in the traditional way; solves the problem that the cylinder test stroke is difficult to adjust; solves the problem that the test frequency of the traditional method is slow;

[0005] However, in the brake cable fatigue testing device, when adjusting the position of the brake cable end, the force spring and the eccentric disk to change the force, one end of the brake cable needs to be removed from the force spring and reinstalled, while the other end of the brake cable needs to be removed and installed when adjusting the position on the eccentric disk, resulting in cumbersome adjustment steps for the brake cable end and inconvenient operation. Utility Model Content

[0006] The utility model aims to provide a brake line fatigue testing device, which can be used for testing and adjusting the brake line without the need to disassemble the bolts from the force spring and the eccentric disk and reinstall them, and is quick and convenient.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brake line fatigue testing device, comprising a test bench, a brake line, a force spring, a weighing sensor, a power mechanism, an eccentric disk, and a connecting rod. Linear bearings and a lifting bracket are respectively installed on the top of the test bench. Both ends of the brake line extend to the right sides of the two groups of linear bearings respectively. One end of the brake line is connected to one end of the force spring, and the other end of the brake line is connected to the eccentric disk through the connecting rod. Positioning rods are respectively inserted into the ends of the brake lines close to the force springs, and the positioning rods are inserted into the gaps of the force springs at the ends away from the brake lines. A slide is fixedly installed on the front of the eccentric disk, a screw is rotatably connected inside the slide, and an adjustment block is threadedly installed on the outside of the screw.

[0008] Preferably, the brake line is supported on the top of the test bench through a linear bearing and the lifting bracket.

[0009] Preferably, a positioning hole is respectively opened at one end of the brake line close to the force spring, the positioning rod is a U-shaped structure, and the end of the positioning rod is inserted into the inner wall of the positioning hole.

[0010] Preferably, one end of the connecting rod is rotatably connected to the brake line, and the other end of the connecting rod is rotatably connected to the front side of the adjustment block.

[0011] Preferably, the power mechanism includes a mounting seat and a reduction motor, and the reduction motor on the mounting seat is fixedly connected to the eccentric disk via a rotating shaft.

[0012] Preferably, the adjusting block slides in the inner wall of the screw rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, one end of the brake line is respectively inserted into the positioning hole and the gap of the force spring through the two ends of the U-shaped positioning rod, so that the deformation length of the force spring can be adjusted. There is no need to disassemble the brake line from the bolt on the force spring and re-fix it. This makes it more convenient to adjust the brake line and the force spring. The end of the brake line close to the eccentric disk can be rotated by the screw rod, so that the connecting rod and the adjusting block can slide on the front side of the slide seat to adjust the relative position. There is no need to disassemble the bolts from the force spring and the eccentric disk and reinstall them. The operation is convenient and the steps are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0017] Figure 3This is a schematic diagram of the top structure of the test bench in the utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0019] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] In the figure: 1. test bench; 2. brake line; 3. force spring; 4. power mechanism; 5. connecting rod; 6. positioning rod; 7. slide seat; 21. linear bearing; 22. lifting bracket; 31. weighing sensor; 41. eccentric disk; 61. positioning hole; 71. screw; 72. adjustment block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-5 The utility model provides a technical solution: a brake line fatigue test device, including a test bench 1, a brake line 2, a force spring 3, a weighing sensor 31, a power mechanism 4, an eccentric disk 41, and a connecting rod 5. A linear bearing 21 and a lifting bracket 22 are respectively installed on the top of the test bench 1, and both ends of the brake line 2 extend to the right side of two sets of linear bearings 21;

[0023] One end of the brake line 2 is connected to one end of the force spring 3, and the other end of the brake line 2 is connected to the eccentric disk 41 through a connecting rod 5. The end of the brake line 2 close to the force spring 3 is respectively plugged with a positioning plug rod 6, and the end of the positioning plug rod 6 away from the brake line 2 is plugged into the gap of the force spring 3. A slide seat 7 is fixedly installed on the front of the eccentric disk 41, and a screw rod 71 is rotatably connected inside the slide seat 7. An adjusting block 72 is installed on the outside of the screw 71 through a thread.

[0024] The brake line 2 extends to the force spring 3 and the eccentric disk 41 through both ends, and the eccentric disk 41 is driven to rotate by the reduction motor in the power mechanism 4, so that the connecting rod 5 rotating on the front of the eccentric disk 41 drives the brake line 2 to move back and forth, and the other end of the connecting rod 5 will tighten or relax the force spring 3, thereby realizing the reciprocating pulling and releasing operation. The weighing sensor 31 is used to detect the force change of the brake line 2 during the test process. The technical solution for fatigue testing of the brake line 2 is a prior art and will not be elaborated here.

[0025] A flat block structure is installed at one end of the brake line 2 near the force spring 3, and the flat block structure is originally installed on the brake line 2. One end of the brake line 2 is respectively inserted into the positioning hole 61 and the gap of the force spring 3 through the two ends of the U-shaped positioning rod 6, so that the deformation length of the force spring 3 can be adjusted. There is no need to disassemble the brake line 2 from the bolts on the force spring 3 and re-fix it. This makes it more convenient to adjust the brake line 2 and the force spring 3, and the end of the brake line 2 near the eccentric disk 41 can be rotated by the screw 71, so that the connecting rod 5 and the adjusting block 72 can slide on the front side of the slide seat 7 to adjust the relative position. There is no need to disassemble the bolts from the force spring 3 and the eccentric disk 41 and reinstall them. The operation is convenient and the steps are simple.

[0026] The brake line 2 is supported on the top of the test bench 1 by linear bearings 21 and a lifting bracket 22 . The brake line 2 can be pulled out from the two sets of linear bearings 21 to adjust the relative lengths of the two ends.

[0027] Among them, a positioning hole 61 is opened at one end of the brake line 2 close to the force spring 3, the positioning rod 6 is a U-shaped structure, and the end of the positioning rod 6 is inserted into the inner wall of the positioning hole 61. One end of the brake line 2 is respectively inserted into the positioning hole 61 and the gap between the force spring 3 through the two ends of the U-shaped positioning rod 6, so that the deformation length of the force spring 3 can be adjusted.

[0028] Among them, one end of the connecting rod 5 is connected to the brake line 2 by rotation, and the other end of the connecting rod 5 is rotationally connected to the front of the adjusting block 72. The power mechanism 4 includes a mounting seat and a reduction motor. The reduction motor on the mounting seat is fixedly connected to the eccentric disk 41 through a rotating shaft. The adjusting block 72 slides in the inner wall of the screw 71, and the end of the brake line 2 close to the eccentric disk 41 can be rotated by the screw 71, so that the connecting rod 5 and the adjusting block 72 can slide on the front of the slide seat 7 to adjust the relative position. There is no need to disassemble the bolts from the force spring 3 and the eccentric disk 41 and reinstall them. The operation is convenient and the steps are simple.

[0029] Working principle: When in use, first extend the two ends of the brake line to be tested to one side of the two sets of linear bearings 21;

[0030] Then, one end of the brake line 2 can be inserted into the positioning hole 61 and the gap between the force spring 3 through the two ends of the U-shaped positioning rod 6;

[0031] After the other end of the brake line 2 is rotatably connected to the end of the connecting rod 5, the connecting rod 5 is rotatably installed on the front adjustment block 72 of the eccentric disk 41, and the eccentric disk 41 is driven to rotate by the reduction motor in the power mechanism 4, so that the connecting rod 5 rotating on the front of the eccentric disk 41 drives the brake line 2 to move back and forth, and the other end of the connecting rod 5 will tighten or relax the force spring 3, thereby realizing the reciprocating pulling and releasing operation, and the weighing sensor 31 is used to detect the force change of the brake line 2 during the test process;

[0032] Finally, when adjusting the relative position of the end of the brake line 2, one end of the brake line 2 is respectively inserted into the positioning hole 61 and the gap of the force spring 3 through the two ends of the U-shaped positioning rod 6, so that the deformation length of the force spring 3 can be adjusted, and the end of the brake line 2 close to the eccentric disk 41 can be rotated by the screw 71, so that the connecting rod 5 and the adjustment block 72 can slide on the front of the slide seat 7 to adjust the relative position. There is no need to disassemble the bolts from the force spring 3 and the eccentric disk 41 and reinstall them. The operation is convenient and the steps are simple.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake line fatigue test device, comprising a test bench (1), a brake line (2), a force spring (3), a weighing sensor (31), a power mechanism (4), an eccentric disk (41), and a connecting rod (5), characterized in that: A linear bearing (21) and a lifting bracket (22) are respectively installed on the top of the test bench (1), and the two ends of the brake line (2) extend to the right sides of the two groups of linear bearings (21). One end of the brake line (2) is connected to one end of the force spring (3), and the other end of the brake line (2) is connected to the eccentric disk (41) through the connecting rod (5). The end of the brake line (2) close to the force spring (3) is respectively inserted with a positioning rod (6), and the end of the positioning rod (6) away from the brake line (2) is inserted in the gap of the force spring (3). A slide seat (7) is fixedly installed on the front of the eccentric disk (41), and a screw rod (71) is rotatably connected inside the slide seat (7), and an adjustment block (72) is installed on the outside of the screw rod (71) through a thread.

2. A brake line fatigue testing device according to claim 1, characterized in that: The brake line (2) is supported on the top of the test bench (1) via a linear bearing (21) and the lifting bracket (22).

3. A brake line fatigue testing device according to claim 1, characterized in that: A positioning hole (61) is respectively provided at one end of the brake line (2) close to the force spring (3); the positioning rod (6) is a U-shaped structure; the end of the positioning rod (6) is inserted into the inner wall of the positioning hole (61).

4. A brake line fatigue testing device according to claim 1, characterized in that: One end of the connecting rod (5) is connected to the brake line (2) by rotation, and the other end of the connecting rod (5) is connected to the front side of the adjustment block (72) by rotation.

5. A brake line fatigue testing device according to claim 1, characterized in that: The power mechanism (4) comprises a mounting seat and a reduction motor, and the reduction motor on the mounting seat is fixedly connected to the eccentric disk (41) via a rotating shaft.

6. A brake line fatigue testing device according to claim 1, characterized in that: The adjusting block (72) slides in the inner wall of the screw rod (71).

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