Automobile brake hose flexural fatigue test device

Abstract

The utility model relates to the technical field of automobile part production, and discloses an automobile brake hose flexural fatigue test device which comprises a bottom plate, two sliding columns and a fixed column are fixedly connected to the right side of the top of the bottom plate, and a top plate is fixedly connected between the two sliding columns and the top of the fixed column. A clamping assembly is slidably connected between the outer walls of the two sliding columns, a reciprocating assembly is arranged at the tops of the sliding columns, two fixing plates are slidably connected to the outer walls of the fixing columns, an adjusting assembly is arranged in the fixing plate at the top, the clamping assembly comprises two sliding plates, and the interiors of the two sliding plates are slidably connected to the outer walls of the sliding columns. The front portion of the sliding plate is connected with a mounting plate through a fixing bolt, and the middle of the mounting plate is rotationally connected with an adjusting lead screw. According to the utility model, through the arrangement of the clamping assembly and the protection assembly, when the brake hose is clamped, tiny deformation and displacement of the hose in the test process can be effectively buffered and adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production, in particular to a flexure fatigue testing device for automobile brake hoses. Background Art

[0002] In automotive braking systems, the quality and performance of brake hoses are crucial. Brake hoses must operate reliably under a variety of complex operating conditions, and their flex fatigue performance is directly related to the safety and reliability of vehicle braking. Therefore, accurate and effective flex fatigue testing of brake hoses is a key component of automotive braking technology development and quality control.

[0003] Traditional brake hose testing equipment often suffers from numerous shortcomings. Most devices lack effective buffering and adaptive mechanisms for clamping the brake hose. When the brake hose undergoes slight deformation and displacement during testing, it is susceptible to severe surface damage due to the rigid clamping. This not only significantly shortens the hose's service life but also leads to biased test results, failing to accurately reflect the hose's fatigue performance. Because surface damage also compromises the hose's internal structural integrity and mechanical properties, test data cannot effectively guide actual production and application. Therefore, a flexural fatigue test device for automotive brake hoses was proposed. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a flexure fatigue test device for automobile brake hoses, aiming to improve the problem of severe surface damage caused by rigid clamping in the prior art.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a flexure fatigue test device for an automobile brake hose, comprising a bottom plate, two sliding columns and a fixed column fixedly connected to the right side of the top of the bottom plate, a top plate fixedly connected between the two sliding columns and the top of the fixed column, a clamping assembly slidably connected between the outer walls of the two sliding columns, a reciprocating assembly provided on the top of the sliding column, two fixed plates slidably connected to the outer walls of the fixed column, and an adjustment assembly provided inside the top fixed plate;

[0006] The clamping assembly includes two slides, which are slidably connected to the outer wall of the slide column. The front of the slide is connected to a mounting plate by a fixing bolt. The middle of the mounting plate is rotatably connected to an adjusting screw. The outer wall of the adjusting screw is threadedly connected to the adjusting plate. A protective assembly is provided inside the adjusting plate, and a connecting assembly is installed at the rear of the bottom slide.

[0007] As a further description of the above technical solution:

[0008] The protection component includes a limit plate, an outer wall of the limit plate is slidably connected to the inside of the adjustment plate, a clamping plate is fixedly connected to one side of the limit plate, and a plurality of first springs are fixedly connected to the other side of the limit plate.

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes a connecting plate, the top of the connecting plate is fixedly connected to the bottom of the fixing plate, the bottom side of the front of the connecting plate is fixedly connected to the driving plate, the top of the front side of the connecting plate is fixedly connected to the back of the skateboard at the bottom, and the inside of the driving plate is slidably connected to the outer wall of the sliding column.

[0011] As a further description of the above technical solution:

[0012] The reciprocating assembly includes a servo motor, which is mounted on the top of the base plate. The output end of the servo motor is fixedly connected to a turntable. The side of the turntable away from the servo motor is conveniently fixedly connected to an eccentric shaft. The side of the eccentric shaft away from the turntable is fixedly connected to a limiting sleeve. The outer wall of the eccentric shaft is rotatably connected to a connecting rod, and the end of the connecting rod away from the eccentric shaft is rotatably connected to the side of the drive plate away from the connecting plate.

[0013] As a further description of the above technical solution:

[0014] The adjustment assembly includes a pull rod and a positioning slot. The pull rod is slidably connected to the inside of the fixed plate at the top. The positioning slot is opened on the outer wall of the fixed column. The outer wall of the pull rod is fixedly connected to the limit block. The side of the pull rod away from the limit block is fixedly connected with a clamping block. The outer wall of the pull rod is provided with a second spring, and the inner wall of the positioning slot is provided with a fixing slot.

[0015] As a further description of the above technical solution:

[0016] A control system is fixedly connected to the left side of the top of the base plate, and the control system is electrically connected to the servo motor.

[0017] As a further description of the above technical solution:

[0018] One end of the first spring away from the limiting plate is mounted on the inner wall of the adjustment plate.

[0019] As a further description of the above technical solution:

[0020] The pull rod and the outer wall of the clamping block are slidably connected to the interior of the positioning groove, and the outer wall of the clamping block is slidably connected to the interior of the fixing groove.

[0021] The utility model has the following beneficial effects:

[0022] 1. The present invention utilizes a clamping assembly and a protective assembly to effectively buffer and accommodate minor deformation and displacement of the brake hose during testing. This minimizes damage to the hose surface and reduces the risk of premature hose failure due to mechanical contact during testing, extending the hose's service life while ensuring that test results truly reflect the hose's fatigue performance.

[0023] 2. In this utility model, the adjustment assembly allows for easy and precise adjustment of the fixing plate's position on the fixing post, ensuring a secure fixation. This allows the test device to accommodate testing requirements for brake hoses of varying lengths, significantly improving its versatility and reducing the cost and time associated with replacing or modifying the device due to varying hose lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of a flexural fatigue test device for automobile brake hoses proposed in the present utility model;

[0025] Figure 2 This is a schematic diagram of a servo motor for a flexural fatigue test device for automobile brake hoses proposed in the present invention;

[0026] Figure 3 This is a schematic diagram of a slide plate of a flexural fatigue test device for automobile brake hoses proposed in the present invention;

[0027] Figure 4 This is a cross-sectional view of an adjustment plate of a flexure fatigue test device for automobile brake hoses proposed in the utility model;

[0028] Figure 5 This is a cross-sectional view of a fixing plate of a flexural fatigue test device for automobile brake hoses proposed in the present utility model;

[0029] Figure 6 The utility model provides a schematic diagram of a fixing groove of a flexural fatigue test device for automobile brake hoses.

[0030] Legend:

[0031] 1. Bottom plate; 2. Sliding column; 3. Top plate; 4. Slide plate; 5. Mounting plate; 6. Adjusting screw; 7. Adjusting plate; 8. Limiting plate; 9. Clamping plate; 10. First spring; 11. Fixing column; 12. Fixing plate; 13. Connecting plate; 14. Driving plate; 15. Servo motor; 16. Turntable; 17. Eccentric shaft; 18. Limiting sleeve; 19. Connecting rod; 20. Pull rod; 21. Limiting block; 22. Second spring; 23. Block; 24. Positioning slot; 25. Fixing slot; 26. Control system. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment of a flexural fatigue test device for automobile brake hoses, comprising a base plate 1, which serves as the basic supporting component of the entire test device and provides a stable mounting platform for other components. Two sliding columns 2 and a fixed column 11 are fixedly connected on the top right side of the base plate 1. The two sliding columns 2 are parallel to each other and perpendicular to the base plate 1, and together with the fixed column 11, form a stable frame structure, which can withstand various forces and maintain the stability of the entire device during the test. A top plate 3 is fixedly connected between the two sliding columns 2 and the top of the fixed column 11, and the top plate 3 connects the top of the sliding column 2 and the top of the fixed column 11, further enhancing the stability of the frame structure. A clamping assembly is slidably connected between the outer walls of the two sliding columns 2, and the guiding effect of the sliding column 2 enables the clamping assembly to be fixed to the base plate 1. The components can move smoothly in the vertical direction, thereby realizing the clamping operation of different positions of the automobile brake hose and adapting to the flexing movement of the hose during the test. A reciprocating component is provided on the top of the sliding column 2. The reciprocating component can generate periodic linear motion, providing a power source for the test, so that the clamping component drives the brake hose to perform repeated flexing movements to simulate fatigue conditions in actual use. Two fixed plates 12 are slidably connected to the outer wall of the fixed column 11. An adjustment component is provided inside the top fixed plate 12. The fixed plate 12 can slide up and down on the fixed column 11 to adjust its position. An adjustment component is provided inside the top fixed plate 12. The adjustment component can easily control the position of the fixed plate 12 on the fixed column 11 and fix it to meet the test requirements of brake hoses of different lengths.

[0034] Reference Figure 2-Figure 4The clamping assembly includes two slide plates 4, which are internally slidably connected to the outer wall of the slide column 2. The slide plate 4 slides up and down smoothly with the help of the smooth outer wall of the slide column 2, so that the height position of the brake hose can be adjusted according to the length and test requirements of the brake hose. The front part of the slide plate 4 is connected to the mounting plate 5 by a fixing bolt. The fixing bolt enables the mounting plate 5 to be firmly mounted on the slide plate 4. It also facilitates the disassembly and replacement of the mounting plate 5 to adapt to different types of brake hose tests. The middle part of the mounting plate 5 is rotatably connected to the adjusting screw rod 6, which can rotate around its own axis. By rotating the adjusting screw rod 6, the precise position adjustment of subsequent components can be achieved. The outer wall of the adjusting screw rod 6 is threadedly connected to the adjusting plate 7. When the adjusting screw rod 6 rotates, the adjusting plate 7 is adjusted. The section plate 7 will move linearly along the axial direction of the adjusting screw rod 6, thereby realizing precise control of the clamping or loosening action of the brake hose. A protective component is provided inside the adjusting plate 7. The protective component can protect the hose in the process of clamping the brake hose, avoiding damage to the hose due to excessive clamping force. At the same time, it can also ensure that the hose will not deviate or fall off during the test, ensuring the accuracy and reliability of the test. A connecting component is installed at the rear of the bottom slide 4. The connecting component connects the slide 4 with other components, so that the slide 4 can drive the brake hose to perform flexural movement when it is driven by the reciprocating component, and maintain a stable connection relationship during the movement, so that the power transmission of the entire test device is smoother.

[0035] Reference Figure 4 The protective component includes a limit plate 8, the outer wall of the limit plate 8 is slidably connected to the inside of the adjusting plate 7, and the limit plate 8 can slide limitedly inside the adjusting plate 7. The sliding can buffer and adapt to the slight deformation and displacement of the brake hose during the test to a certain extent. A clamping plate 9 is fixedly connected to one side of the limit plate 8, and the clamping plate 9 is in direct contact with the brake hose. The hose is clamped by cooperating with the components on the other side. Its shape and surface material are designed to ensure sufficient clamping force while minimizing damage to the hose surface. A plurality of first springs 10 are fixedly connected to the other side of the limit plate 8. The first spring 10 can provide elastic buffering force. When the brake hose is subjected to external force during the test and produces a slight displacement, the first spring 10 will expand and contract accordingly, thereby absorbing and dispersing these external forces to prevent the hose from being damaged by sudden impact force. At the same time, it can also enable the clamping plate 9 to always maintain a stable clamping force on the hose, thereby ensuring the smooth progress of the test.

[0036] Reference Figure 2The connecting assembly includes a connecting plate 13, the top of the connecting plate 13 is fixedly connected to the bottom of the bottom fixing plate 12, indirectly connecting the fixing plate 12 and the slide 4, making the structure of the entire device more compact and stable. The bottom side of the front of the connecting plate 13 is fixedly connected to a driving plate 14, and the top of the front side of the connecting plate 13 is fixedly connected to the back of the bottom slide 4. The driving plate 14 serves as the connection point between the connecting assembly and the reciprocating assembly, and can transmit the power generated by the reciprocating assembly to the connecting plate 13, thereby driving the slide 4 and the clamping assembly to move. The driving plate 14 is internally slidably connected to the outer wall of the sliding column 2, and the sliding column 2 provides a guiding effect for the movement of the driving plate 14, so that the driving plate 14 can perform smooth linear motion along the sliding column 2 when pushed by the connecting rod 19, thereby driving the entire connecting assembly and the clamping assembly to perform stable flexural motion, avoiding shaking and offset during movement, and improving the accuracy of the test.

[0037] Reference Figure 1 and Figure 2 The reciprocating assembly includes a servo motor 15. The servo motor 15 serves as a power source and has high-precision speed control and position control capabilities. It can accurately output power according to the test requirements. The servo motor 15 is installed on the top of the base plate 1. The output end of the servo motor 15 is fixedly connected to a turntable 16. The turntable 16 rotates synchronously with the rotation of the servo motor 15, transmitting the rotational motion of the motor. The side of the turntable 16 away from the servo motor 15 is convenient for fixed connection with an eccentric shaft 17. The eccentric shaft 17 provides periodic push-pull power for the subsequent connecting rod 19. The eccentric shaft 17 is away from the servo motor 15. A limit sleeve 18 is fixedly connected to one side of the turntable 16. The limit sleeve 18 can limit the movement range of the connecting rod 19 to prevent it from excessive displacement or detachment during movement, thereby ensuring the stability and safety of the entire reciprocating assembly. The outer wall of the eccentric shaft 17 is rotatably connected to the connecting rod 19. The end of the connecting rod 19 away from the eccentric shaft 17 is rotatably connected to the side of the driving plate 14 away from the connecting plate 13. The connecting rod 19 swings under the drive of the eccentric shaft 17 and converts this swinging motion into linear motion at the other end, thereby pushing the driving plate 14 to perform reciprocating motion.

[0038] Reference Figure 5 and Figure 6The adjusting assembly includes a pull rod 20 and a positioning slot 24. The pull rod 20 is slidably connected to the inside of the top fixing plate 12, and the sliding operation is used to adjust the position of the fixing plate 12. The positioning slot 24 is opened on the outer wall of the fixing column 11, and the positioning slot 24 provides an accurate position reference for the positioning of the fixing plate 12, so that the fixing plate 12 can be accurately fixed to the fixing column 11 at the required height position. The outer wall of the pull rod 20 is fixedly connected to the limit block 21, and the limit block 21 can limit the sliding range of the pull rod 20 to prevent the pull rod 20 from falling out of the inside of the fixing plate 12. The pull rod 20 is fixedly connected to a card block 23 on the side away from the limit block 21. The outer wall of the pull rod 20 is sleeved with a second spring 22. The second spring 22 provides elastic force during the operation of the pull rod 20. When the pull rod 20 is pulled to make the card block 23 disengage from the fixing slot 25, the second spring 22 is compressed. After the pull rod 20 is released, the elastic force of the second spring 22 will make the card block 23 re-engage the fixing slot 25, which facilitates the adjustment and fixing operation of the position of the fixing plate 12. A fixing groove 25 is provided on the inner wall of the positioning groove 24, and the clamping block 23 cooperates with the fixing groove 25 on the inner wall of the positioning groove 24. When the clamping block 23 is inserted into the fixing groove 25, the fixing plate 12 can be firmly fixed on the fixing column 11, ensuring that the fixing plate 12 will not be displaced during the test.

[0039] Reference Figure 1 and Figure 2 A control system 26 is fixedly connected to the left side of the top of the base plate 1. The control system 26 serves as the control center of the entire test device and can monitor and control various parameters during the test. The control system 26 is electrically connected to the servo motor 15. The control system 26 can send control signals to the servo motor 15 to accurately control the start, stop and speed adjustment of the servo motor 15.

[0040] Reference Figure 4 The end of the first spring 10 away from the limit plate 8 is installed on the inner wall of the adjusting plate 7, so that the first spring 10 can work stably inside the adjusting plate 7. When the limit plate 8 is subjected to external force, the first spring 10 can effectively play its buffering and elastic support role, ensuring that the clamping force of the clamping plate 9 on the brake hose is always within a reasonable range. The hose will not loosen during the test due to too small a clamping force, nor will the hose be damaged due to too large a clamping force, thereby improving the reliability and safety of the test device in clamping the brake hose.

[0041] Reference Figure 5 and Figure 6The pull rod 20 and the outer wall of the block 23 are slidably connected inside the positioning groove 24. The sliding connection method enables the pull rod 20 to move up and down smoothly in the positioning groove 24, thereby driving the block 23 to perform corresponding actions, facilitating the position adjustment and fixing operation of the fixed plate 12 on the fixed column 11. The outer wall of the block 23 is slidably connected inside the fixing groove 25. When the block 23 slides into the fixing groove 25, a stable mechanical locking structure can be formed to firmly fix the fixing plate 12 on the fixing column 11, ensuring that the fixing plate 12 will not be displaced or shaken due to external force during the test, thereby ensuring the stability of the test device and the accuracy of the test results.

[0042] Working principle: When the brake hose needs to be subjected to a flexure test, the adjusting screw rod 6 is rotated, and the adjusting plate 7 is driven to move by rotating the adjusting screw rod 6. When the distance between the adjusting plate 7 and the slide plate 4 increases, the brake hose is placed between the adjusting plate 7 and the slide plate 4 and the adjusting screw rod 6 is reversed. By reversing the adjusting screw rod 6, the distance between the slide plate 4 and the adjusting plate 7 is reduced, thereby fixing the brake hose. In the process of fixing the hose, the clamping plate 9 will first contact the hose, causing the clamping plate 9 to slide and drive the limit plate 8 to slide, while squeezing the adjusting plate 7 and pushing the limit plate 8 and the clamping plate 9 to slide under the elastic action of the adjusting plate 7, so as to further fix the hose. Subsequently, the servo motor 15 is controlled to rotate by the control system 26. When the servo motor 15 rotates, it drives the turntable 16 to rotate and drives the deflection plate 8 to rotate. The spindle 17 rotates, thereby driving the connecting rod 19 to slide up and down, and then driving the driving plate 14 to slide up and down, so that the bottom slide plate 4 slides up and down, realizing the flexing movement of the hose. When the length of the hose changes, or the flexing position needs to be changed, the pull rod 20 is rotated to make the block 23 slide out from the inside of the fixed groove 25. Then, the pull rod 20 is pulled. When the pull rod 20 is pulled, it will drive the limit block 21 to slide and squeeze the second spring 22. When the block 23 is completely pulled out of the positioning groove 24, the position of the top fixed plate 12 can be adjusted. Then, the pull rod 20 is released, and the potential energy generated by the squeezing of the second spring 22 is reset, pushing the block 23 and the positioning groove 24 to engage. Then, the pull rod 20 is rotated to make the block 23 and the block 23 engage, thereby fixing the fixed plate 12.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexural fatigue test device for an automobile brake hose, comprising a base plate (1), characterized in that: Two sliding columns (2) and a fixed column (11) are fixedly connected to the right side of the top of the bottom plate (1), a top plate (3) is fixedly connected between the two sliding columns (2) and the top of the fixed column (11), a clamping assembly is slidably connected between the outer walls of the two sliding columns (2), a reciprocating assembly is provided on the top of the sliding column (2), two fixed plates (12) are slidably connected to the outer wall of the fixed column (11), and an adjustment assembly is provided inside the top fixed plate (12); The clamping assembly includes two slides (4), the two slides (4) are slidably connected to the outer wall of the slide column (2), the front of the slide (4) is connected to a mounting plate (5) through a fixing bolt, the middle of the mounting plate (5) is rotatably connected to an adjusting screw (6), the outer wall of the adjusting screw (6) is threadedly connected to an adjusting plate (7), a protective assembly is provided inside the adjusting plate (7), and a connecting assembly is installed at the rear of the bottom slide (4).

2. The automobile brake hose flexure fatigue test device according to claim 1, characterized in that: The protection component comprises a limit plate (8), the outer wall of the limit plate (8) is slidably connected to the inside of the adjustment plate (7), a clamping plate (9) is fixedly connected to one side of the limit plate (8), and a plurality of first springs (10) are fixedly connected to the other side of the limit plate (8).

3. The automobile brake hose flexure fatigue test device according to claim 2, characterized in that: The connecting assembly comprises a connecting plate (13), the top of the connecting plate (13) is fixedly connected to the bottom of the fixing plate (12), the bottom side of the front of the connecting plate (13) is fixedly connected to a driving plate (14), the top of the front side of the connecting plate (13) is fixedly connected to the back of the sliding plate (4) at the bottom, and the inside of the driving plate (14) is slidably connected to the outer wall of the sliding column (2).

4. The automobile brake hose flexure fatigue test device according to claim 3, characterized in that: The reciprocating assembly includes a servo motor (15), the servo motor (15) is mounted on the top of the base plate (1), the output end of the servo motor (15) is fixedly connected to a turntable (16), the side of the turntable (16) away from the servo motor (15) is conveniently fixedly connected to an eccentric shaft (17), the side of the eccentric shaft (17) away from the turntable (16) is fixedly connected to a limiting sleeve (18), the outer wall of the eccentric shaft (17) is rotatably connected to a connecting rod (19), and one end of the connecting rod (19) away from the eccentric shaft (17) is rotatably connected to the side of the drive plate (14) away from the connecting plate (13).

5. The automobile brake hose flexure fatigue test device according to claim 1, characterized in that: The adjustment assembly includes a pull rod (20) and a positioning groove (24), the pull rod (20) is slidably connected to the inside of the top fixed plate (12), the positioning groove (24) is opened on the outer wall of the fixed column (11), the outer wall of the pull rod (20) is fixedly connected to the limit block (21), the side of the pull rod (20) away from the limit block (21) is fixedly connected with a clamping block (23), the outer wall of the pull rod (20) is provided with a second spring (22), and the inner wall of the positioning groove (24) is provided with a fixing groove (25).

6. The automobile brake hose flexure fatigue test device according to claim 4, characterized in that: A control system (26) is fixedly connected to the left side of the top of the base plate (1), and the control system (26) is electrically connected to the servo motor (15).

7. The automobile brake hose flexure fatigue test device according to claim 2, characterized in that: One end of the first spring (10) away from the limiting plate (8) is mounted on the inner wall of the adjustment plate (7).

8. The automobile brake hose flexure fatigue test device according to claim 5, characterized in that: The pull rod (20) and the outer wall of the clamping block (23) are slidably connected inside the positioning groove (24), and the outer wall of the clamping block (23) is slidably connected inside the fixing groove (25).

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