Endurance test device based on automobile driving seat framework

Abstract

The utility model relates to the technical field of automobile part test equipment, in particular to an endurance test device based on an automobile driving seat framework, which comprises a base, a mounting plate, a loading device, a loading device and a vibration device, and is characterized in that the top wall of the base is provided with a supporting plate through the vibration device; the mounting plate is mounted on the top wall of the supporting plate through the loading device, two groups of mounting racks are symmetrically mounted on the top wall of the mounting plate, the loading device is mounted at one end of the top wall of the mounting plate, the test device can apply force to the seat framework from multiple dimensions, complex working conditions in actual driving are simulated more truly, and the test efficiency is improved. The accuracy and reliability of a test result are improved, high-precision position control and force loading can be realized by using a loading system consisting of a ball screw and a motor, and the performance of the seat framework under different conditions can be accurately evaluated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts testing equipment, in particular to a durability test device based on automobile driving seat skeleton. BACKGROUND

[0002] It is known that with the rapid development of the automobile industry, the safety, comfort and durability of automobile seats are increasingly demanding, in order to ensure that the seat can provide sufficient support and protection during long-term use, and maintain stable performance under various complex driving conditions, it must be strictly tested for durability.

[0003] The existing seat skeleton durability test equipment usually adopts a single dimension loading method or a simple static load test, which is difficult to accurately reproduce the various dynamic loads experienced by the seat during vehicle driving, for example, many traditional test equipment can only apply force in a single direction (such as longitudinal), unable to simulate the multi-directional stress on the seat when the vehicle accelerates, decelerates or turns, and unable to simulate the vibration and impact under dynamic conditions, which makes the test results lack of comprehensiveness and reliability. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the utility model provides a durability test device based on automobile driving seat skeleton.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of durability test device based on automobile driving seat skeleton, including base, mounting plate, load device, loading device and vibration device, the top wall of the base is installed with support plate by the vibration device, the top wall of the support plate is installed with the mounting plate by the loading device, the top wall of the mounting plate is symmetrically installed with two groups of mounting rack, the top wall of the mounting plate one end is installed with the load device, the loading device includes first fixed plate, first recess, first ball screw, first sliding block, first motor, second fixed plate, second recess, second ball screw, second sliding block and second motor, the top wall of the first fixed plate is longitudinally provided with the first recess, the first ball screw is rotatably installed in the first recess, one end of the first ball screw is installed with the first motor penetrating the first fixed plate, the first sliding block is screw-mounted on the first ball screw, the second fixed plate is fixedly installed on the top wall of the first sliding block, the top wall of the second fixed plate is transversely provided with the second recess, the second ball screw is rotatably installed in the second recess, one end of the second ball screw is installed with the second motor penetrating the second fixed plate, the second sliding block is screw-mounted on the second ball screw, and the top wall of the second sliding block is connected with the bottom wall of the mounting plate.

[0008] In order to load the seat skeleton, the utility model improves that, the load device includes rectangular block, rectangular slot, air cylinder, moving block, moving plate, support rod and load frame, the top wall of the mounting plate one end is installed with the rectangular block, the rectangular block is provided with the rectangular slot near one end of the mounting rack, the air cylinder is installed on the top wall of the rectangular block, the output end of the air cylinder penetrates the top wall of the rectangular block and extends to the rectangular slot and is installed with the moving block, the moving plate is fixedly installed on the side wall of the moving block, the bottom wall and the side wall of the moving plate are both installed with support rod, and the load frame is installed on the end, away from the moving plate, of the two groups of support rods.

[0009] In order to simulate actual vibration environment, the utility model improves that, the vibration device includes spring and vibration motor, multiple groups of the spring are installed between the bottom wall of the base and the support plate, the vibration motor is installed in the middle of the top wall of the base, and the output end of the vibration motor is connected with the bottom wall of the support plate.

[0010] In order to guide the first sliding block, the utility model improves that, the first fixed plate top wall is provided with first guide slot away from one end of the first recess, first guide rod is fixedly installed in the first guide slot, first guide block is slidably installed on the first guide rod, and the first guide block is fixedly connected with the bottom wall of the second fixed plate.

[0011] In order to guide the second slider, the utility model improves that the second fixed plate top wall is equipped with the second guide groove in the one end away from the second recess, the second guide groove is fixedly installed with the second guide rod, the second guide rod is slidably installed with the second guide block, and the second guide block is fixedly connected with the bottom wall of the mounting plate.

[0012] In order to guide the moving block, the utility model improves that the mounting plate is equipped with the guide frame in the top wall of the one end away from the rectangular block, the guide frame is fixedly installed with the third guide rod, the third guide rod is slidably installed with the third guide block, and the third guide block is fixedly connected with the one end away from the moving block of the moving plate.

[0013] Preferably, the utility model improves that the load frame is L type design.

[0014] Preferably, the utility model improves that the first motor and the second motor are all servo motors.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a kind of based on automobile driving seat skeleton's endurance test device, with following beneficial effects:

[0017] The based on automobile driving seat skeleton's endurance test device, by the loading device of being set, using the loading system of ball screw and servo motor, very high position control precision can be realized, this makes test device accurately simulate the various dynamic loads that vehicle acceleration, deceleration or turning exerts to seat skeleton, the device can exert force on seat skeleton in longitudinal and transverse two directions, to more truly simulate the complex working condition in actual driving, this multidimensional simulation helps to find potential problems in design, especially the performance of seat skeleton under different driving conditions.

[0018] The based on automobile driving seat skeleton's endurance test device, by the load device of being set, by the telescopic action of cylinder driving moving block along rectangular groove, and then moving plate, support rod and load frame move together, both dynamic load and static load can be applied, satisfy the testing demand of diversification, can adjust the action mode (such as speed, stroke etc.) of cylinder according to different testing demand, to realize the durability test of seat skeleton under different load conditions.

[0019] The durability test device based on the automobile driver seat framework, through the vibration device, according to the preset parameter adjustment vibration frequency and amplitude of the vibration motor, can accurately simulate various vibration conditions that may be encountered in the vehicle driving process, such as road bumps, engine vibration, etc., combined with the elastic properties of the spring, more comprehensively simulate the dynamic response of the vehicle under different road conditions, so as to better evaluate the performance of the seat framework under complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a first angle three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a second angle three-dimensional structure schematic view of the utility model;

[0022] Figure 3 It is a third angle three-dimensional structure schematic view of the utility model;

[0023] Figure 4 It is a fourth angle three-dimensional structure schematic view of the utility model.

[0024] In the drawing: 1, base; 2, mounting plate; 3, support plate; 4, mounting frame; 5, first fixed plate; 6, first recess; 7, first ball screw; 8, first sliding block; 9, first motor; 10, second fixed plate; 11, second recess; 12, second ball screw; 13, second sliding block; 14, second motor; 15, rectangular block; 16, rectangular groove; 17, air cylinder; 18, moving block; 19, moving plate; 20, support rod; 21, load frame; 22, spring; 23, vibration motor; 24, first guide groove; 25, first guide rod; 26, first guide block; 27, second guide groove; 28, second guide rod; 29, second guide block; 30, guide frame; 31, third guide rod; 32, third guide block. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please refer to Figures 1-4The application discloses a kind of based on automobile driving seat skeleton endurance test device, including base 1, mounting plate 2, load device, loading device and vibration device, the top wall of the base 1 is installed with support plate 3 by the vibration device, the top wall of the support plate 3 is installed with the mounting plate 2 by the loading device, the top wall of the mounting plate 2 is symmetrically installed with two groups of mounting frame 4, the top wall of the mounting plate 2 is installed with the load device, the loading device includes first fixed plate 5, first recess 6, first ball screw 7, first sliding block 8, first motor 9, second fixed plate 10, second recess 11, second ball screw 12, second sliding block 13 and second motor 14, the top wall of the first fixed plate 5 is longitudinally provided with the first recess 6, the first recess 6 is rotatably installed with the first ball screw 7, one end of the first ball screw 7 is installed with the first motor 9 penetrating the first fixed plate 5, the first ball screw 7 is screw-mounted with the first sliding block 8, the top wall of the first sliding block 8 is fixedly installed with the second fixed plate 10, the top wall of the second fixed plate 10 is transversely provided with the second recess 11, the second recess 11 is rotatably installed with the second ball screw 12, one end of the second ball screw 12 is installed with the second motor 14 penetrating the second fixed plate 10, the second ball screw 12 is screw-mounted with the second sliding block 13, and the top wall of the second sliding block 13 is connected with the bottom wall of the mounting plate 2, in the embodiment, first, automobile driving seat skeleton is installed between the two groups of mounting frame 4 on the mounting plate 2, ensure that seat skeleton is firmly fixed on mounting frame 4, to ensure that displacement does not occur during testing, load device can simulate the pressure exerted on seat by passengers or drivers of different weights, adjust the parameters of vibration device, such as frequency and amplitude, to simulate the vibration conditions caused by various road conditions encountered during vehicle driving, the first motor 9 drives the first ball screw 7 to rotate, drives the first sliding block 8 to move along the first recess 6, so as to realize the movement of the mounting plate 2 in longitudinal direction, at the same time, the second motor 14 drives the second ball screw 12 to rotate, drives the second sliding block 13 to move along the second recess 11, so that the mounting plate 2 can be adjusted in transverse direction, so as to simulate the dynamic load generated on seat skeleton under conditions such as vehicle acceleration, deceleration or turning, the test device can apply force to seat skeleton from multiple dimensions (longitudinal and transverse), more realistically simulate complex working conditions in actual driving, improve the accuracy and reliability of test results, by using the loading system composed of ball screw and motor, high-precision position control and force loading can be realized, which helps to accurately evaluate the performance of seat skeleton under different conditions.

[0027] In actual use, further load is applied to the seat framework, and in the embodiment, the load device comprises a rectangular block 15, a rectangular slot 16, a gas cylinder 17, a moving block 18, a moving plate 19, a support rod 20 and a load frame 21, the rectangular block 15 is installed at one end of the top wall of the mounting plate 2, the rectangular slot 16 is formed in one end of the rectangular block 15 close to the mounting frame 4, the gas cylinder 17 is installed on the top wall of the rectangular block 15, the moving block 18 is installed in the rectangular slot 16 through the top wall of the rectangular block 15 and extending from the output end of the gas cylinder 17, the moving plate 19 is fixedly installed on the side wall of the moving block 18, the support rod 20 is installed on the bottom wall and the side wall of the moving plate 19, and the load frame 21 is installed at the ends of the two groups of support rods 20 away from the moving plate 19, the gas cylinder 17 is started, the moving block 18 is driven to move along the rectangular slot 16 through the extension and retraction action of the gas cylinder 17, and then the moving plate 19, the support rod 20 and the load frame 21 are moved together, dynamic or static load is applied to the seat framework, the action mode (such as speed, stroke, etc.) of the gas cylinder 17 can be adjusted according to different test schemes, the durability test of the seat framework under different load conditions is realized, the load device driven by the gas cylinder 17 can very accurately control the size of the force applied to the seat framework, which helps to simulate the load conditions in various actual use scenarios and improves the authenticity and accuracy of the test.

[0028] In actual use, the actual vibration environment is further simulated, and in the embodiment, the vibration device comprises a spring 22 and a vibration motor 23, a plurality of groups of the spring 22 are installed between the bottom wall of the base 1 and the support plate 3, the vibration motor 23 is installed on the top wall of the base 1, the output end of the vibration motor 23 is connected with the bottom wall of the support plate 3, the vibration motor 23 is started, and the vibration frequency and amplitude are adjusted according to the preset parameters to simulate various vibration conditions that the vehicle may encounter in the actual driving process, such as road bumps, engine vibrations, etc., in combination with the elastic properties of the spring 22, the dynamic load distribution generated by the human body when sitting on the seat to the seat framework can be more accurately simulated, a more real experimental environment is provided for evaluating the safety and comfort of the seat, the response of the seat framework under different vibration conditions is observed and recorded, including but not limited to structural deformation, connection point loosening, etc., and sensors are used to monitor the key performance indicators of the seat framework in the vibration process in real time, such as stress distribution, displacement change, etc.

[0029] In actual use, the first sliding block 8 is further guided, in this embodiment, a first guide groove 24 is formed in the top wall of the first fixed plate 5 away from one end of the first groove 6, a first guide rod 25 is fixedly installed in the first guide groove 24, a first guide block 26 is slidably installed on the first guide rod 25, and the first guide block 26 is fixedly connected with the bottom wall of the second fixed plate 10. In the case of bearing a large load, relying only on the first ball screw 7 to support and guide the first sliding block 8 may cause excessive wear or structural deformation, and the presence of the first guide rod 25 and the first guide block 26 can help to disperse the load and reduce the pressure on the ball screw, prolonging its service life.

[0030] In actual use, the second sliding block 13 is further guided, in this embodiment, a second guide groove 27 is formed in the top wall of the second fixed plate 10 away from one end of the second groove 11, a second guide rod 28 is fixedly installed in the second guide groove 27, a second guide block 29 is slidably installed on the second guide rod 28, and the second guide block 29 is fixedly connected with the bottom wall of the mounting plate 2. The second guide block 29 slides on the second guide rod 28 to guide the movement of the second sliding block 13.

[0031] In actual use, the moving block 18 is further guided, in this embodiment, a guide frame 30 is installed on the top wall of the mounting plate 2 away from one end of the rectangular block 15, a third guide rod 31 is fixedly installed in the guide frame 30, a third guide block 32 is slidably installed on the third guide rod 31, and the third guide block 32 is fixedly connected with the end of the moving plate 19 away from the moving block 18. The design of the third guide rod 31 and the third guide block 32 can significantly improve the stability of the linear motion of the moving block 18 under the drive of the air cylinder 17, which reduces the shaking or deviation of the moving block 18 due to lateral force or misalignment, ensuring a more stable moving process.

[0032] Preferably, in this embodiment, the load carrier 21 is designed in an L shape. The L-shaped load carrier 21 can more closely simulate the actual posture and pressure distribution of a passenger sitting on a seat. For example, by placing a counterweight or a special pressure distribution pad on the horizontal part of the L-shaped load carrier 21, the pressure pattern exerted by the passenger's hips and back on the seat can be simulated.

[0033] Preferably, in this embodiment, the first motor 9 and the second motor 14 are both servo motors. Servo motors have a closed-loop control system and can monitor the position, speed, and torque of the motor in real time through a feedback mechanism (such as an encoder), thereby achieving extremely precise position control, which is crucial for linear motion applications that require precise positioning, such as simulating the dynamic load exerted on the seat when the vehicle accelerates, decelerates, or turns.

[0034] In order to explain the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A durability testing device based on an automobile driver's seat frame, comprising a base (1), a mounting plate (2), a load device, a loading device, and a vibration device, characterized in that: The top wall of the base (1) is fitted with a support plate (3) via the vibration device. The top wall of the support plate (3) is fitted with a mounting plate (2) via the loading device. Two sets of mounting brackets (4) are symmetrically mounted on the top wall of the mounting plate (2). The load device is mounted on one end of the top wall of the mounting plate (2). The loading device includes a first fixed plate (5), a first groove (6), a first ball screw (7), a first slider (8), a first motor (9), a second fixed plate (10), a second groove (11), a second ball screw (12), a second slider (13), and a second motor (14). The top wall of the first fixed plate (5) is longitudinally provided with the first groove (6). The first ball screw is rotatably mounted in the first groove (6). (7) One end of the first ball screw (7) passes through the first fixing plate (5) and is equipped with the first motor (9). The first ball screw (7) is threadedly installed with the first slider (8). The top wall of the first slider (8) is fixedly installed with the second fixing plate (10). The top wall of the second fixing plate (10) is laterally provided with the second groove (11). The second ball screw (12) is rotatably installed in the second groove (11). One end of the second ball screw (12) passes through the second fixing plate (10) and is equipped with the second motor (14). The second ball screw (12) is threadedly installed with the second slider (13). The top wall of the second slider (13) is connected to the bottom wall of the mounting plate (2).

2. The durability testing device based on an automobile driver's seat frame according to claim 1, characterized in that: The load device includes a rectangular block (15), a rectangular groove (16), a cylinder (17), a moving block (18), a moving plate (19), a support rod (20), and a load frame (21). The rectangular block (15) is installed on one end of the top wall of the mounting plate (2). The rectangular groove (16) is opened at one end of the rectangular block (15) near the mounting frame (4). The cylinder (17) is installed on the top wall of the rectangular block (15). The output end of the cylinder (17) passes through the top wall of the rectangular block (15) and extends into the rectangular groove (16) where the moving block (18) is installed. The moving plate (19) is fixedly installed on the side wall of the moving block (18). The bottom wall and side wall of the moving plate (19) are both equipped with support rods (20). The load frame (21) is installed at the end of the two sets of support rods (20) away from the moving plate (19).

3. The durability testing device based on an automobile driver's seat frame according to claim 2, characterized in that: The vibration device includes a spring (22) and a vibration motor (23). Multiple sets of the springs (22) are installed between the bottom wall of the base (1) and the support plate (3). The vibration motor (23) is installed in the middle of the top wall of the base (1). The output end of the vibration motor (23) is connected to the bottom wall of the support plate (3).

4. The durability testing device based on an automobile driver's seat frame according to claim 3, characterized in that: A first guide groove (24) is provided at the end of the top wall of the first fixing plate (5) away from the first groove (6). A first guide rod (25) is fixedly installed in the first guide groove (24). A first guide block (26) is slidably installed on the first guide rod (25). The first guide block (26) is fixedly connected to the bottom wall of the second fixing plate (10).

5. The durability testing device based on an automobile driver's seat frame according to claim 4, characterized in that: A second guide groove (27) is provided at one end of the top wall of the second fixing plate (10) away from the second groove (11). A second guide rod (28) is fixedly installed in the second guide groove (27). A second guide block (29) is slidably installed on the second guide rod (28). The second guide block (29) is fixedly connected to the bottom wall of the mounting plate (2).

6. The durability testing device based on an automobile driver's seat frame according to claim 5, characterized in that: A guide frame (30) is installed on the top wall of the mounting plate (2) away from the rectangular block (15). A third guide rod (31) is fixedly installed inside the guide frame (30). A third guide block (32) is slidably installed on the third guide rod (31). The third guide block (32) is fixedly connected to the end of the moving plate (19) away from the moving block (18).

7. The durability testing device based on an automobile driver's seat frame according to claim 6, characterized in that: The load rack (21) is an L-shaped design.

8. The durability testing device based on an automobile driver's seat frame according to claim 7, characterized in that: Both the first motor (9) and the second motor (14) are servo motors.

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