Automobile seat bridge support fatigue resistance testing device

Abstract

The application discloses a kind of automobile seat bridge support fatigue resistance testing device, belong to fatigue strength detection technical field.Mainly including machine body, the upper end in the inside of machine body is provided with detection assembly, the detection assembly includes mounting plate, the middle part of mounting plate upper end is fixedly installed with hydraulic cylinder, the output end of hydraulic cylinder is fixedly installed with pressure sensor after penetrating mounting plate, the inside of machine body is provided with adjusting assembly for adjusting the detection position of detection assembly, the inside of machine body is provided with clamping assembly for clamping bridge support and moving assembly for driving the movement of clamping assembly.The application discloses a kind of automobile seat bridge support fatigue resistance testing device, adjusting assembly is moved along arc track by arc guide rail and gear transmission structure, can exert different angle pressure to bridge support, can simulate different direction load in actual use.

Description

Technical Field

[0001] This application relates to the field of fatigue strength testing technology, specifically a fatigue testing device for an automobile seat bridge bracket. Background Technology

[0002] As a key load-bearing component in automotive seat systems, the fatigue resistance of the car seat bridge bracket directly affects the long-term safety and reliability of the seat. During actual use, the bridge bracket often needs to withstand dynamic loads from different directions and angles. Especially under complex road conditions, the bracket is prone to fatigue damage, which in turn affects the overall structural stability of the seat and the safety of the occupants.

[0003] Currently, most fatigue testing devices for bridge supports on the market adopt a single-point loading testing method, that is, applying reciprocating pressure to a fixed position of the support through hydraulic or pneumatic devices to simulate the stress conditions during use. However, this type of device has some shortcomings. Traditional fatigue testing devices for bridge supports are difficult to simulate the complex loads from different directions in actual use, and cannot perform fatigue tests on bridge supports from multiple angles and positions, resulting in incomplete test results.

[0004] Therefore, it is necessary to provide a fatigue testing device for automotive seat bridge brackets to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a fatigue testing device for automobile seat bridge brackets, which solves the problem that it is impossible to perform fatigue testing on bridge brackets from multiple angles and positions, resulting in incomplete test results.

[0007] The technical solution adopted by this application to solve its technical problem is: a fatigue testing device for an automobile seat bridge support, comprising a body, a detection component disposed at the upper end of the body, the detection component comprising a mounting plate, a hydraulic cylinder fixedly mounted at the middle of the upper end of the mounting plate, a pressure sensor fixedly mounted at the output end of the hydraulic cylinder after passing through the mounting plate, an adjustment component for adjusting the detection position of the detection component disposed inside the body, a clamping component for clamping the bridge support and a moving component for driving the clamping component to move disposed inside the body.

[0008] Furthermore, a limiting plate is fixedly installed at the output end of the hydraulic cylinder, and guide rods are fixedly installed on both sides of the limiting plate, with the guide rods slidably connected to the mounting plate.

[0009] Furthermore, the adjustment assembly includes arc-shaped support frames fixedly installed on both sides inside the body, and arc-shaped guide rails fixedly installed on opposite sides of the two arc-shaped support frames. First sliders are slidably installed on the arc-shaped guide rails, and the mounting plate is fixedly installed between the two first sliders by bolts.

[0010] Furthermore, the adjustment assembly also includes a drive mechanism for driving the detection assembly to move. The drive mechanism includes a drive motor fixedly mounted on the upper end of the first slider. A gear is fixedly mounted on the output end of the drive motor after passing through the first slider. A semi-circular gear ring is fixedly mounted on the outer wall of the arc-shaped support frame. The gear meshes with the gear ring.

[0011] Furthermore, the adjustment component also includes a locking component for locking the position of the detection component. The locking component includes a first cylinder fixedly installed on both sides of the first slider. The output end of the first cylinder passes through the first slider and is fixedly installed with a limit pin. One side of the arc-shaped guide rail is provided with multiple sets of positioning holes, and the limit pin can be inserted into the positioning holes.

[0012] Furthermore, the clamping assembly includes a clamping platform, with mounting seats fixedly installed on both sides of the clamping platform. A mounting frame is fixedly installed on the mounting seats, and a second cylinder is rotatably installed on the upper end of the mounting frame. A connecting plate is also rotatably installed on the mounting frame. The upper end of the connecting plate is rotatably connected to the output end of the second cylinder. A pressure plate is fixedly installed in the middle of the connecting plate, and a clamping plate is fixedly installed at the lower end of the pressure plate. A groove for accommodating the bridge support is formed between the clamping plate and the base.

[0013] Furthermore, the moving component includes a positioning plate fixedly installed inside the body of the machine body, linear guide rails fixedly installed on both sides of the upper end of the positioning plate, a second slider slidably installed on the linear guide rails, a clamping platform fixedly installed on the second slider, an electric push rod fixedly installed in the middle of the positioning plate, a fixing plate fixedly installed at the rear end of the clamping platform, and the output end of the electric push rod fixedly connected to the fixing plate.

[0014] The beneficial effects of this application are: The fatigue testing device for automobile seat bridge bracket provided by this application has an adjustment component that drives the detection component to move along an arc-shaped trajectory through an arc-shaped guide rail and a gear transmission structure, which can apply pressure at different angles to the bridge bracket, simulate loads in different directions in actual use, and solve the problems of single-point loading and single testing angle of traditional devices.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of a fatigue testing device for an automobile seat bridge bracket according to this application; Figure 2 This is an internal schematic diagram of a fatigue testing device for an automobile seat bridge bracket according to this application; Figure 3 This is a partial structural schematic diagram of a fatigue testing device for an automobile seat bridge bracket according to this application; Figure 4 This is a schematic diagram of the drive assembly of a fatigue testing device for an automobile seat bridge bracket according to this application; Figure 5 This is a schematic diagram of the drive assembly and clamping assembly of a fatigue testing device for an automobile seat bridge bracket according to this application; Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0017] The following are the labeling elements in the figure: 1. Machine body; 2. Detection component; 21. Mounting plate; 22. Hydraulic cylinder; 23. Pressure sensor; 24. Limiting plate; 25. Guide rod; 3. Adjustment component; 31. Arc-shaped support frame; 32. First slider; 33. Drive motor; 34. Gear; 35. Gear ring; 36. Arc-shaped guide rail; 4. Locking component; 41. First cylinder; 42. Positioning hole; 5. Clamping component; 51. Clamping platform; 52. Base; 53. Mounting bracket; 54. Second cylinder; 55. Connecting plate; 56. Pressure plate; 57. Clamping plate; 6. Moving component; 61. Positioning plate; 62. Linear guide rail; 63. Second slider; 64. Electric push rod; 65. Fixing plate. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] like Figure 1-2 As shown, this application provides a fatigue testing device for an automotive seat bridge bracket, including a body 1 as an overall installation and protection carrier. The body 1 provides a stable installation space and support foundation for core components such as the detection component 2, adjustment component 3, and clamping component 5, avoiding data deviation caused by equipment shaking during the test and ensuring test accuracy. like Figure 3 As shown, the upper part of the machine body 1 is provided with a detection component 2 for applying test pressure and collecting data. The detection component 2 includes a horizontally set mounting plate 21. A hydraulic cylinder 22 is fixedly installed in the middle of the upper end of the mounting plate 21. The hydraulic cylinder 22 serves as the power source for fatigue testing and can output continuous and stable linear pressure to simulate the repeated loads borne by the bridge support during the use of a car seat.

[0021] A pressure sensor 23 is fixedly installed at the output end of the hydraulic cylinder 22 after passing through the mounting plate 21. The pressure sensor 23 can capture the pressure value applied to the bridge support by the hydraulic cylinder 22 in real time and transmit the data to the control system. This allows staff to monitor whether the test pressure meets the standard and record the pressure change curve, providing data support for fatigue performance analysis. A limit plate 24 is fixedly installed at the output end of the hydraulic cylinder 22. Guide rods 25 are fixedly installed on both sides of the limit plate 24. The guide rods 25 are slidably connected to the mounting plate 21. When the hydraulic cylinder 22 drives the output end to extend or retract, the guide rods 25 move synchronously with the limit plate 24. Through the sliding guiding action of the mounting plate 21, the movement direction of the limit plate 24 is restricted, ensuring that the limit plate 24 always remains horizontal, avoiding pressure application deviation that could lead to test data distortion, and ensuring that the pressure acts vertically on the test part of the bridge support. like Figure 3As shown, the machine body 1 is equipped with an adjustment component 3 for adjusting the detection position of the detection component 2. This component can adjust the pressure application angle and position according to different test locations on the bridge support, adapting to diverse testing needs. The adjustment component 3 includes arc-shaped support frames 31 fixedly installed on both sides inside the machine body 1, providing stable support for the arc-shaped guide rails 36. Arc-shaped guide rails 36 are fixedly installed on opposite sides of the two arc-shaped support frames 31, and first sliders 32 are slidably mounted on each arc-shaped guide rail 36. A mounting plate 21 is fixedly installed between the two first sliders 32 by bolts, forming a rigid connection between the mounting plate 21 and the first sliders 32. When the first sliders 32 slide along the arc-shaped guide rails 36, they can drive the entire detection component 2 to move synchronously, achieving arc-shaped adjustment of the pressure application position. The first slider 32 and the arc-shaped support frame 31 are provided with a drive mechanism for driving the detection component 2 to move. The drive mechanism includes a drive motor 33 fixedly installed on the upper end of the first slider 32. The drive motor 33 serves as a power source and can output stable rotational power. The output end of the drive motor 33 passes through the first slider 32 and is fixedly installed with a gear 34. A semi-circular gear ring 35 is fixedly installed on the outer wall of the arc-shaped support frame 31. The gear 34 meshes with the gear ring 35 to form a gear 34 transmission structure.

[0022] When the detection position needs to be adjusted, the drive motor 33 is started. The output end of the motor drives the gear 34 to rotate. The gear 34 rolls along the gear ring 35, which in turn drives the first slider 32 to slide along the arc-shaped guide rail 36. The detection component 2 moves synchronously with the slider. By controlling the forward and reverse rotation and speed of the drive motor 33, the moving direction and position of the detection component 2 can be adjusted to ensure that the pressure is applied to the preset test point. The first slider 32 and the guide rail are also provided with locking components 4 for locking the position of the detection component 2 to prevent the detection component 2 from shifting during the test. The locking component 4 includes a first cylinder 41 fixedly installed on both sides of the first slider 32. The output end of the first cylinder 41 passes through the first slider 32 and is fixedly installed with a limit pin. A number of positioning holes 42 are provided on one side of the guide rail, and the positioning holes 42 are evenly distributed along the arc-shaped guide rail 36.

[0023] When the detection component 2 moves to the target position, the first cylinder 41 is activated. The cylinder output pushes the limit pin through the corresponding positioning hole 42. The engagement of the limit pin with the positioning hole 42 restricts the sliding of the first slider 32, thereby locking the position of the detection component 2. This ensures stable pressure application during the test and improves the reliability of the test data. Figure 4-6As shown, the machine body 1 is internally equipped with a clamping assembly 5 for fixing the bridge support, ensuring that the support does not loosen or shift during testing and guaranteeing accurate pressure application. The clamping assembly 5 includes a clamping platform 51 for supporting the bridge support. Mounting seats are fixedly installed on both sides of the clamping platform 51, and the mounting seats provide fixed support for the mounting frame 53. The mounting frame 53 is fixedly installed at one end of the mounting seat. A second cylinder 54 is rotatably installed at the upper end of the mounting frame 53. The second cylinder 54 serves as a clamping power source and can output linear driving force. A connecting plate 55 is rotatably installed on the mounting frame 53. The upper end of the connecting plate 55 is rotatably installed with the output end of the second cylinder 54. A pressure plate 56 is fixedly installed in the middle of the connecting plate 55. A clamping plate 57 is fixedly installed at the lower end of the pressure plate 56. A groove for accommodating the bridge support is provided between the clamping plate 57 and the base 52. The shape of the groove is adapted to the bridge support to achieve precise positioning. When clamping the bridge support is required, place the support in the groove, activate the second cylinder 54, and the cylinder output end extends and retracts, causing the connecting plate 55 to rotate around the mounting bracket 53. When the cylinder output end extends, it pushes the connecting plate 55 downward, causing the pressure plate 56 and clamping plate 57 to move downward synchronously until the clamping plate 57 presses the bridge support tightly. When the cylinder output end retracts, it pulls the connecting plate 55 upward, and the clamping plate 57 releases, allowing the support to be removed. The cooperation between the clamping plate 57 and the groove ensures stable clamping of the bridge support while preventing excessive clamping force from deforming the support, thus guaranteeing the authenticity of the test. The clamping component 5 is a mature existing technology and will not be described in detail here. like Figure 4 As shown, a moving component 6 for driving the clamping assembly 5 to move is provided inside the machine body 1. The moving component 6 includes a positioning plate 61 fixedly installed inside the machine body 1. Linear guide rails 62 are fixedly installed on both sides of the upper end of the positioning plate 61. A second slider 63 is slidably installed on the linear guide rails 62. The clamping platform 51 is fixedly installed on the second slider 63, so that the clamping platform 51 can slide along the linear guide rails 62 with the slider. An electric push rod 64 is fixedly installed in the middle of the positioning plate 61. A fixed plate 65 is fixedly installed at the rear end of the clamping platform 51. The output end of the electric push rod 64 is fixedly connected to the fixed plate 65. When the electric push rod 64 is activated, the output end of the push rod extends and retracts, causing the fixed plate 65 to move, which in turn causes the clamping platform 51 and the second slider 63 to slide along the linear guide rail 62, thereby realizing the back-and-forth movement of the clamping assembly 5, which facilitates the clamping and installation of the bridge bracket.

[0024] Working principle: Place the bridge support to be tested on the clamping platform 51 of the clamping assembly 5, so that it is located in the groove between the clamping plate 57 and the base 52. Start the second cylinder 54 to push the connecting plate 55 and the pressure plate 56 down, so that the clamping plate 57 presses the support tightly and completes the fixation.

[0025] According to the test requirements, the position of the detection component 2 is adjusted by adjusting component 3, the drive motor 33 is started, the gear 34 is driven to rotate along the gear ring 35, the first slider 32 slides along the arc guide rail 36, thereby moving the detection component 2 to a preset angle or position. After reaching the target position, the first cylinder 41 in the locking component 4 is started, pushing the limit pin into the positioning hole 42 to fix the position of the detection component 2.

[0026] Activate the electric push rod 64 in the moving component 6 to push the clamping platform 51 to move back and forth along the linear guide rail 62 to adapt to different test distances.

[0027] Hydraulic cylinder 22 is activated, and its output end moves downward. Through pressure sensor 23, reciprocating pressure is applied to the bridge support to simulate the dynamic load in actual use. Guide rod 25 and limit plate 24 ensure that the pressure is applied vertically and stably to avoid off-center loading. Pressure sensor 23 collects pressure data in real time and transmits it to the control system to record the pressure change curve for analyzing the fatigue resistance of the support.

[0028] Stop hydraulic cylinder 22, release locking component 4, remove detection component 2, release clamping component 5, and remove the bridge support that has completed the test.

[0029] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fatigue testing device for an automobile seat bridge support, comprising a body (1), wherein a detection component (2) is provided at the upper end of the body (1), the detection component (2) includes a mounting plate (21), a hydraulic cylinder (22) is fixedly mounted at the middle of the upper end of the mounting plate (21), and a pressure sensor (23) is fixedly mounted at the output end of the hydraulic cylinder (22) after passing through the mounting plate (21), characterized in that: The body (1) is provided with an adjustment component (3) for adjusting the detection position of the detection component (2), and the body (1) is provided with a clamping component (5) for clamping the bridge support and a moving component (6) for driving the clamping component (5) to move.

2. The fatigue testing device for an automobile seat bridge support according to claim 1, characterized in that: The output end of the hydraulic cylinder (22) is also fixedly installed with a limiting plate (24), and guide rods (25) are fixedly installed on both sides of the limiting plate (24). The guide rods (25) are slidably connected to the mounting plate (21).

3. The fatigue testing device for an automobile seat bridge support according to claim 1, characterized in that: The adjustment component (3) includes an arc-shaped support frame (31) fixedly installed on both sides inside the body (1). An arc-shaped guide rail (36) is fixedly installed on the opposite side of the two arc-shaped support frames (31). A first slider (32) is slidably installed on the arc-shaped guide rail (36). The mounting plate (21) is fixedly installed between the two first sliders (32) by bolts.

4. The fatigue testing device for an automobile seat bridge support according to claim 3, characterized in that: The adjustment component (3) further includes a drive mechanism for driving the detection component (2) to move. The drive mechanism includes a drive motor (33) fixedly installed on the upper end of the first slider (32). The output end of the drive motor (33) passes through the first slider (32) and is fixedly installed with a gear (34). A semi-circular gear ring (35) is fixedly installed on the outer wall of the arc support frame (31). The gear (34) meshes with the gear ring (35).

5. The fatigue testing device for an automobile seat bridge support according to claim 3, characterized in that: The adjustment component (3) further includes a locking component (4) for locking the position of the detection component (2). The locking component (4) includes a first cylinder (41) fixedly installed on both sides of the first slider (32). The output end of the first cylinder (41) passes through the first slider (32) and is fixedly installed with a limit pin. The arc-shaped guide rail (36) has multiple sets of positioning holes (42) on one side, and the limit pin can be inserted into the positioning hole (42).

6. The fatigue testing device for an automobile seat bridge support according to claim 1, characterized in that: The clamping assembly (5) includes a clamping platform (51), with mounting seats fixedly installed on both sides of the clamping platform (51). A mounting frame (53) is fixedly installed on the mounting seats. A second cylinder (54) is rotatably installed on the upper end of the mounting frame (53). A connecting plate (55) is also rotatably installed on the mounting frame (53). The upper end of the connecting plate (55) is rotatably connected to the output end of the second cylinder (54). A pressure plate (56) is fixedly installed in the middle of the connecting plate (55). A clamping plate (57) is fixedly installed at the lower end of the pressure plate (56). A groove for accommodating the bridge support is formed between the clamping plate (57) and the base (52).

7. The fatigue testing device for an automobile seat bridge support according to claim 6, characterized in that: The moving component (6) includes a positioning plate (61) fixedly installed inside the body (1). Linear guide rails (62) are fixedly installed on both sides of the upper end of the positioning plate (61). A second slider (63) is slidably installed on the linear guide rails (62). The clamping platform (51) is fixedly installed on the second slider (63). An electric push rod (64) is fixedly installed in the middle of the positioning plate (61). A fixing plate (65) is fixedly installed at the rear end of the clamping platform (51). The output end of the electric push rod (64) is fixedly connected to the fixing plate (65).

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