Seat fatigue test system

Abstract

The present invention relates to a seat fatigue test system, and relates to the technical field of seat fatigue test, and its main purpose is to realize multi-point test of seats. The main technical scheme adopted is: the seat fatigue test system includes: a test bench base, on which a seat installation area is arranged at the first position; a load loading part, including a first load loading component and a second load loading component, the first load loading component is arranged at the second position of the test bench base, and the second load loading component can be slidably arranged on a sliding track at the third position of the test bench base to adjust the relative position of the second load loading component to the seat installation area at the first position of the test bench base. Compared with the prior art, multi-point fatigue test can be conveniently completed.

Description

Technical Field

[0001] The invention relates to the technical field of seat fatigue testing, and in particular to a seat fatigue testing system. Background Art

[0002] The car seat fatigue test bench is mainly composed of a test seat fixture, a steel frame, and a simulated load servo actuator fixed on the steel frame. It is a test equipment for testing the fatigue performance of car seats. It can perform various simulated load tests and measure and control various data in real time. The test results directly affect the service life and safety factor of the car seat. It is an indispensable test and detection equipment to ensure the safe and reliable operation of automobiles.

[0003] During the fatigue test, the car seat is installed on the test seat fixture, and the position of the test seat bracket is adjusted to adjust the relative position of the fixed simulated load servo actuator and the car seat. After the adjustment, the simulated load servo actuator can apply a single simulated load test to the car seat.

[0004] There are at least the following problems in the prior art:

[0005] In some new car seat fatigue tests, fatigue tests need to be performed at multiple points on the car seat. The car seat fatigue test bench in the prior art cannot meet the needs of multi-point testing and needs to be matched with additional clamping equipment to complete multi-point fatigue testing. The work efficiency is low and the operation is not flexible enough. Summary of the invention

[0006] In view of this, the present invention provides a seat fatigue testing system, the main purpose of which is to achieve multi-point testing of the seat.

[0007] In order to achieve the above object, the present invention mainly provides the following technical solutions:

[0008] An embodiment of the present invention provides a seat fatigue testing system, comprising:

[0009] A test bench base, on which a seat mounting area is disposed at a first position;

[0010] The load loading part includes a first load loading component and a second load loading component. The first load loading component is arranged at the second position of the test bench base, and the second load loading component is slidably arranged on a sliding track at the third position of the test bench base to adjust the relative position of the second load loading component to the seat mounting area of ​​the first position of the test bench base.

[0011] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0012] Optionally, in the aforementioned seat fatigue testing system, the first load loading component includes at least one first load loading device and a first height adjustment device, and the at least one first load loading device is arranged on the height adjustment end of the first height adjustment device.

[0013] Optionally, in the aforementioned seat fatigue testing system, the first height adjustment device comprises at least two lifting guide posts, a lifting beam, and a lifting drive mechanism that are arranged opposite to each other;

[0014] The at least two lifting guide columns arranged opposite to each other include a first lifting guide column and a second lifting guide column arranged opposite to each other, the first lifting guide column is slidably connected with a first sliding sleeve, the second lifting guide column is slidably connected with a second sliding sleeve, and the lifting beam is respectively connected with the first sliding sleeve and the second sliding sleeve.

[0015] Optionally, in the aforementioned seat fatigue testing system, a first hydraulic locking component is provided on the first sliding sleeve, which can lock the first sliding sleeve on the first lifting guide column, and / or

[0016] The second sliding sleeve is provided with a second hydraulic locking component, which can lock the second sliding sleeve on the second lifting guide column.

[0017] Optionally, the aforementioned seat fatigue testing system further includes:

[0018] A linkage control unit, comprising a linkage controller and a linkage input device, wherein a controlled end of the linkage controller is electrically connected to the linkage input device, a first control end of the linkage controller is electrically connected to the lifting drive mechanism, and a second control end of the linkage controller is electrically connected to the first hydraulic locking component and / or the second hydraulic locking component;

[0019] The linkage controller is configured to control the first hydraulic locking component and / or the second hydraulic locking component to unlock after receiving the lifting drive mechanism command signal from the linkage input device, control the lifting drive mechanism to move, and control the first hydraulic locking component and / or the second hydraulic locking component to lock after executing the lifting drive mechanism command.

[0020] Optionally, in the aforementioned seat fatigue testing system, the connecting portion of the first load applying device is slidably connected in the length direction of the lifting beam.

[0021] Optionally, in the aforementioned seat fatigue testing system, the connecting portion comprises a third sliding sleeve, the third sliding sleeve is sleeved on the lifting beam and is rotationally connected to the lifting beam;

[0022] The third sliding sleeve is provided with a third hydraulic locking component to lock the third sliding sleeve on the lifting beam.

[0023] Optionally, in the aforementioned seat fatigue testing system, the third sliding sleeve is an open sliding sleeve;

[0024] The third hydraulic locking component includes a locking cylinder, a cylinder body of the locking cylinder is arranged on one side of the opening of the sliding sleeve, and a telescopic rod of the locking cylinder is arranged on the other side of the opening of the sliding sleeve. The size of the opening of the sliding sleeve is adjusted by driving the telescopic rod to extend and retract in the cylinder body, so that the third sliding sleeve is locked on the lifting beam or the locking of the third sliding sleeve and the lifting beam is released.

[0025] Optionally, in the aforementioned seat fatigue testing system, there are at least M first load applying devices, and the connecting parts of the M first load applying devices are respectively slidably connected in the length direction of the lifting beam, and M is a positive integer greater than or equal to 2;

[0026] At least M seat installation areas are arranged at a first position on the test bench base;

[0027] When the M first load loading devices slide to the first combination position of the lifting beam, the load loading ends of the M first load loading devices all face the same seat installation area. When the M first load loading devices slide to the second combination position of the lifting beam, the load loading ends of the M first load loading devices respectively face different seat installation areas.

[0028] Optionally, in the aforementioned seat fatigue testing system, the second load loading component includes at least one second load loading device and a second height adjustment device, and the at least one second load loading device is arranged on the height adjustment end of the second height adjustment device.

[0029] By means of the above technical solution, the seat fatigue testing system provided by the technical solution of the present invention has at least the following advantages:

[0030] In the technical solution provided by the embodiment of the present invention, the car seat to be tested can be installed on the seat installation area of ​​the test bench base. By adjusting the second load loading component to the relative position of the seat installation area of ​​the first position of the test bench base, the load loading end of the first load loading component and the load loading end of the second load loading component can simultaneously apply an alternating load to the car seat to be tested to perform a fatigue test. Compared with the prior art, multi-point fatigue testing can be conveniently completed.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0033] Figure 1 is a structural schematic diagram of a seat fatigue testing system provided by an embodiment of the present invention;

[0034] Figure 2 is a structural schematic diagram showing a partial structural perspective of a seat fatigue testing system provided by an embodiment of the present invention;

[0035] Figure 3 It is a schematic diagram of the connection structure between a first sliding sleeve and a first hydraulic locking component of a seat fatigue testing system provided by an embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the electrical connection structure of a linkage control unit of a seat fatigue test system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation, structure, features and effects of the seat fatigue test system proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0038] like Figure 1 As shown, a seat fatigue testing system proposed in one embodiment of the present invention includes: a test bench base 10 and a load loading part.

[0039] A seat installation area is provided at the first position of the test bench base 10, and a car seat z1 to be tested may be provided in the seat installation area. The load loading part includes a first load loading component 20 and a second load loading component 30. The first load loading component 20 is provided at the second position of the test bench base 10, and can apply an alternating load to the car seat to be tested provided in the seat installation area at the first position. The second load loading component 30 can be slidably provided on a sliding track at the third position of the test bench base 10 to adjust the relative position of the second load loading component 30 to the seat installation area at the first position of the test bench base 10, thereby adjusting the relative position of the second load loading component 30 and the car seat z1 to be tested provided in the seat installation area at the first position, so as to facilitate simultaneous application of an alternating load to the car seat z1 to be tested provided in the seat installation area at the first position.

[0040] In the technical solution provided by the embodiment of the present invention, the car seat to be tested can be installed on the seat installation area of ​​the test bench base. By adjusting the second load loading component to the relative position of the seat installation area of ​​the first position of the test bench base, the load loading end of the first load loading component and the load loading end of the second load loading component can simultaneously apply an alternating load to the car seat to be tested to perform a fatigue test. Compared with the prior art, multi-point fatigue testing can be conveniently completed.

[0041] The test bench base is in the shape of a flat plate and can be arranged on the bottom surface. The seat installation area can be one or more. Specifically, the seat installation area can be provided with a connecting seat that matches and connects with the bottom of the car seat to be tested.

[0042] like Figure 2 As shown, the first load loading component includes at least one first load loading device 21 and a first height adjustment device 22. The at least one first load loading device 21 is arranged on the height adjustment end of the first height adjustment device 22. The first height adjustment device 22 can be fixed on the test bench base 10, so that the height of the first load loading device 21 is adjustable to meet the application of alternating loads at different height positions of the car seat to be tested.

[0043] In a specific implementation, the first height adjustment device includes at least two lifting guide columns, a lifting beam, and a lifting drive mechanism that are arranged relatively to each other; the at least two lifting guide columns that are arranged relatively to each other include a first lifting guide column and a second lifting guide column that are arranged relatively to each other, a first sliding sleeve is slidably connected to the first lifting guide column, a second sliding sleeve is slidably connected to the second lifting guide column, and the lifting beam is connected to the first sliding sleeve and the second sliding sleeve respectively. The first load loading device is arranged on the lifting beam, and the output end of the lifting drive mechanism can be connected to the first sliding sleeve and the second sliding sleeve, or can be connected to the lifting beam to lift or lower the first load loading device. Specifically, the first lifting guide column may include two, and the two first lifting guide columns are arranged at intervals on one side of the test bench base, and the second lifting guide column may include two, and the two second lifting guide columns are arranged at intervals on the other side of the test bench base, the first sliding sleeves on the two first lifting guide columns on one side of the test bench base are integrated, and the second sliding sleeves on the two second lifting guide columns on the other side of the test bench base are integrated, and the lifting beam is connected to the integrated first sliding sleeve and the integrated second sliding sleeve respectively. The driving motor of the lifting drive mechanism can drive the height adjustment screw to rotate to adjust the height of the first sliding sleeve that is threadedly connected to the height adjustment screw. Alternatively, the hydraulic rod of the hydraulic cylinder of the lifting drive mechanism drives the height of the first sliding sleeve that is integrated.

[0044] The first sliding sleeve is provided with a first hydraulic locking component, which can lock the first sliding sleeve on the first lifting guide column. When the first hydraulic locking component is in a locked state, the first hydraulic locking component locks the first sliding sleeve on the first lifting guide column. When the first hydraulic locking component is in an unlocked state, the first hydraulic locking component releases the lock between the first sliding sleeve and the first lifting guide column. The second sliding sleeve is provided with a second hydraulic locking component, which can lock the second sliding sleeve on the second lifting guide column. When the second hydraulic locking component is in a locked state, the second hydraulic locking component locks the second sliding sleeve on the second lifting guide column. When the second hydraulic locking component is in an unlocked state, the second hydraulic locking component releases the lock between the second sliding sleeve and the second lifting guide column.

[0045] like Figure 2 and Figure 3As shown, the first sliding sleeve 221 is an open sliding sleeve; the first hydraulic locking component 23 includes a locking cylinder, the cylinder body of the locking cylinder is arranged on one side of the sliding sleeve opening, and the telescopic rod of the locking cylinder is arranged on the other side of the sliding sleeve opening. The size of the sliding sleeve opening is adjusted by driving the telescopic rod in the cylinder body to lock the first sliding sleeve 221 on the first lifting guide column 222 or release the first sliding sleeve 221 from the first lifting guide column 222. The second sliding sleeve is an open sliding sleeve; the second hydraulic locking component includes a locking cylinder, the cylinder body of the locking cylinder is arranged on one side of the sliding sleeve opening, and the telescopic rod of the locking cylinder is arranged on the other side of the sliding sleeve opening. The size of the sliding sleeve opening is adjusted by driving the telescopic rod in the cylinder body to lock the second sliding sleeve on the second lifting guide column or release the second sliding sleeve from the second lifting guide column.

[0046] In one embodiment provided by the present invention, Figure 4As shown, the seat fatigue test system further includes: a linkage control unit 40, the linkage control unit 40 includes a linkage controller and a linkage input device, the controlled end of the linkage controller is electrically connected to the linkage input device, the first control end of the linkage controller is electrically connected to the lifting drive mechanism of the first height adjustment device 22, and the second control end of the linkage controller is electrically connected to the first hydraulic locking component 23 and / or the second hydraulic locking component 24. The linkage controller is configured to control the first hydraulic locking component and / or the second hydraulic locking component to unlock and control the first height adjustment device lifting drive mechanism to move after receiving the first height adjustment device lifting drive mechanism command signal from the linkage input device, and control the first hydraulic locking component and / or the second hydraulic locking component to lock after executing the lifting drive mechanism command. The linkage input device may be provided with a first button and a second button, the first button may be used to control the lifting beam to rise, and the second button may be used to control the lifting beam to fall. After the first button is continuously triggered, a rising drive mechanism command signal is sent to the linkage controller. The linkage controller controls the first hydraulic locking component and / or the second hydraulic locking component to unlock and control the lifting drive mechanism to move upward according to the received rising drive mechanism command signal. After the first button is stopped being triggered, the linkage controller controls the first hydraulic locking component and / or the second hydraulic locking component to lock. After the second button is continuously triggered, a descending drive mechanism command signal is sent to the linkage controller. The linkage controller controls the first hydraulic locking component and / or the second hydraulic locking component to unlock and control the lifting drive mechanism to move downward according to the received descending drive mechanism command signal. After the second button is stopped being triggered, the linkage controller controls the first hydraulic locking component and / or the second hydraulic locking component to lock. For the first load loading component that outputs an alternating load, it can be stably positioned on the first height adjustment device.

[0047] In order to further improve the force direction of the alternating load, the connection part of the first load applying device is slidably connected in the length direction of the lifting beam of the first height adjusting device. The position of the force applied to the tested car seat can be changed by adjusting the position of the first load applying device in the length direction of the lifting beam.

[0048] Specifically, the lifting beam can be a beam with a polygonal outer wall, and the connecting portion of the first load-applying device is an inner polygonal sleeve matching the polygonal beam, and the inner polygonal sleeve is sleeved on the polygonal beam. The lifting beam can also adopt other outer wall shapes, such as Figure 2As shown, in another embodiment, the first height adjustment device lifting beam 223 adopts a cylindrical beam, and the first load-applying device connecting portion includes a third sliding sleeve 211, and the third sliding sleeve 211 is sleeved on the first height adjustment device lifting beam 23 and is rotatably connected to the first height adjustment device lifting beam 23; the third sliding sleeve is provided with a third hydraulic locking component, which can lock the third sliding sleeve on the first height adjustment device lifting beam.

[0049] The third sliding sleeve is an open sliding sleeve; the third hydraulic locking component includes a locking cylinder, a cylinder body of the locking cylinder is arranged on one side of the opening of the sliding sleeve, and a telescopic rod of the locking cylinder is arranged on the other side of the opening of the sliding sleeve, and the size of the opening of the sliding sleeve is adjusted by driving the telescopic rod to extend and retract in the cylinder body, so that the third sliding sleeve is locked on the lifting beam or the locking of the third sliding sleeve and the lifting beam is released.

[0050] There are at least M first load loading devices, and the connecting parts of the M first load loading devices are respectively slidably connected in the length direction of the lifting beam, and M is a positive integer greater than or equal to 2; at least M seat installation areas are set at the first position on the test bench base; when the M first load loading devices slide to the first combination position of the lifting beam, the load loading ends of the M first load loading devices are all facing the same seat installation area, and when the M first load loading devices slide to the second combination position of the lifting beam, the load loading ends of the M first load loading devices are respectively facing different seat installation areas.

[0051] The second load loading component includes at least one second load loading device 31 and a second height adjustment device 32. The at least one second load loading device 31 is arranged on the height adjustment end of the second height adjustment device 32, so that the height of the second load loading device 31 is adjustable to meet the application of alternating loads at different height positions of the car seat to be tested.

[0052] In a specific implementation, the second height adjustment device includes at least two lifting guide posts, a lifting beam, and a lifting drive mechanism that are arranged relatively; the at least two lifting guide posts that are arranged relatively include a third lifting guide post and a fourth lifting guide post that are arranged relatively, the third lifting guide post is slidably connected with a fourth sliding sleeve, the fourth lifting guide post is slidably connected with a fifth sliding sleeve, and the lifting beam is connected with the fourth sliding sleeve and the fifth sliding sleeve respectively. The second load loading device is arranged on the lifting beam, and the output end of the lifting drive mechanism can be connected with the fourth sliding sleeve and the fifth sliding sleeve, or can be connected with the lifting beam to lift or lower the second load loading device. Specifically, the third lifting guide post can include two, and the two third lifting guide posts are arranged at intervals on one side of the test bench base, and the fourth lifting guide post can include two, and the two fourth lifting guide posts are arranged at intervals on the other side of the test bench base, the fourth sliding sleeves on the two third lifting guide posts on one side of the test bench base are integrated, and the fifth sliding sleeves on the two fourth lifting guide posts on the other side of the test bench base are integrated, and the lifting beam is connected with the integrated fourth sliding sleeve and the integrated fifth sliding sleeve respectively. The driving motor of the lifting drive mechanism can drive the height adjustment screw to rotate to adjust the height of the fourth sliding sleeve that is threadedly connected to the height adjustment screw. Alternatively, the hydraulic rod of the hydraulic cylinder of the lifting drive mechanism drives the height of the fourth sliding sleeve that is integrated.

[0053] The sliding rails 11 are located on both sides of the test bench base 10 and are arranged along the sides of the test bench. The sliding base 321 at the bottom of the third lifting guide column is slidably connected to the sliding rail 11 on one side of the test bench base, and the sliding base at the bottom of the fourth lifting guide column is slidably connected to the sliding rail on the other side of the test bench base.

[0054] Specifically, it also includes a horizontal driving mechanism for driving the second load loading component to slide on the sliding track, and the horizontal driving mechanism can be a screw transmission mechanism, etc. A locking device can also be provided between the second load loading component and the test bench base to strengthen the restriction of sliding between the second load loading component and the test bench base.

[0055] The fourth sliding sleeve is provided with a fourth hydraulic locking component, which can lock the fourth sliding sleeve on the third lifting guide column. When the fourth hydraulic locking component is in a locked state, the fourth hydraulic locking component locks the fourth sliding sleeve on the third lifting guide column. When the fourth hydraulic locking component is in an unlocked state, the fourth hydraulic locking component releases the lock between the fourth sliding sleeve and the third lifting guide column. The fifth sliding sleeve is provided with a fifth hydraulic locking component, which can lock the fifth sliding sleeve on the fourth lifting guide column. When the fifth hydraulic locking component is in a locked state, the fifth hydraulic locking component locks the fifth sliding sleeve on the fourth lifting guide column. When the fifth hydraulic locking component is in an unlocked state, the fifth hydraulic locking component releases the lock between the fifth sliding sleeve and the fourth lifting guide column.

[0056] The third control terminal of the linkage controller is electrically connected to the lifting drive mechanism of the second height adjustment device, and the fourth control terminal of the linkage controller is electrically connected to the fourth hydraulic locking component and / or the fifth hydraulic locking component. The linkage controller is configured to control the fourth hydraulic locking component and / or the fourth locking part to unlock after receiving the second height adjustment device lifting drive mechanism command signal from the linkage input device, control the second height adjustment device lifting drive mechanism to move, and control the fourth hydraulic locking component and / or the fourth locking part to lock after executing the lifting drive mechanism command.

[0057] The connection part of the second load-applying device is slidably connected in the length direction of the second height-adjusting device lifting beam. The second height-adjusting device lifting beam adopts a cylindrical beam, and the second load-applying device connection part includes a sixth sliding sleeve, which is sleeved on the second height-adjusting device lifting beam and is rotatably connected with the second height-adjusting device lifting beam; the sixth sliding sleeve is provided with a sixth hydraulic locking component to lock the sixth sliding sleeve on the second height-adjusting device lifting beam.

[0058] The seat fatigue testing system provided by the embodiment of the present invention has the following advantages:

[0059] The two load-applying components can work independently and can perform seat fatigue tests on at least two seats at the same time. They can also perform coupling tests and apply multi-point tests to the same seat.

[0060] The first load loading device and the second load loading device can be adjusted in multiple degrees of freedom, and the adjustment process is convenient, and different seat specimens can be flexibly matched.

[0061] The linkage control unit can be automatically locked after adjustment, thereby improving the test efficiency. In the above embodiments, the description of each embodiment has its own emphasis, and for the part not described in detail in one embodiment, reference can be made to the relevant description of other embodiments.

[0062] It is understandable that the related features in the above devices can be referenced to each other. In addition, the "first", "second" and the like in the above embodiments are used to distinguish the various embodiments, and do not represent the advantages and disadvantages of the various embodiments.

[0063] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known structures and technologies are not shown in detail so as not to obscure the understanding of this description.

[0064] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed apparatus should not be interpreted as reflecting the intent that the claimed invention requires more features than those expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all of the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0065] Those skilled in the art will appreciate that the components in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The components in the embodiments may be combined into one component, and further may be divided into multiple subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all components of any device so disclosed may be combined in any combination, except that at least some of such features are mutually exclusive. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0066] In addition, it will be appreciated by those skilled in the art that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in combination thereof.

[0067] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of parts or components not listed in the claims. The word "one" or "an" preceding a part or component does not exclude the presence of a plurality of such parts or components. The present invention may be implemented by means of a device comprising several different parts. In a claim listing several parts, several of these parts may be embodied by the same component item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A seat fatigue testing system, characterized in that: include: A test bench base, on which a seat installation area is arranged at a first position; the installation area is at least one, and a connecting seat is arranged in the installation area, and the connecting seat is used to connect the seat to be tested; A load loading part, comprising a first load loading component and a second load loading component, wherein the first load loading component is arranged at the second position of the test bench base, and the second load loading component is slidably arranged on a sliding track at the third position of the test bench base, so as to adjust the relative position of the second load loading component to the seat installation area at the first position of the test bench base; The first load loading component comprises at least one first load loading device and a first height adjustment device, wherein the at least one first load loading device is arranged on a height adjustment end of the first height adjustment device; The first height adjustment device includes at least two lifting guide columns, a lifting beam, and a lifting drive mechanism that are arranged opposite to each other; The at least two lifting guide columns arranged opposite to each other include a first lifting guide column and a second lifting guide column arranged opposite to each other, the first lifting guide column is slidably connected with a first sliding sleeve, the second lifting guide column is slidably connected with a second sliding sleeve, and the lifting crossbeam is connected with the first sliding sleeve and the second sliding sleeve respectively; The first sliding sleeve is provided with a first hydraulic locking component, which can lock the first sliding sleeve on the first lifting guide column, and / or The second sliding sleeve is provided with a second hydraulic locking component, which can lock the second sliding sleeve on the second lifting guide column; The connecting portion of the first load applying device is slidably connected in the length direction of the lifting beam; The connecting portion comprises a third sliding sleeve, the third sliding sleeve is sleeved on the lifting beam and is rotatably connected to the lifting beam; The third sliding sleeve is provided with a third hydraulic locking component to lock the third sliding sleeve on the lifting beam; The third sliding sleeve is an open sliding sleeve; The third hydraulic locking component comprises a locking cylinder, a cylinder body of the locking cylinder is arranged on one side of the opening of the sliding sleeve, and a telescopic rod of the locking cylinder is arranged on the other side of the opening of the sliding sleeve, and the size of the opening of the sliding sleeve is adjusted by driving the telescopic rod to extend and retract in the cylinder body, so that the third sliding sleeve is locked on the lifting beam or the locking of the third sliding sleeve and the lifting beam is released; The second load loading component comprises at least one second load loading device and a second height adjustment device, wherein the at least one second load loading device is arranged on a height adjustment end of the second height adjustment device; The second height adjustment device includes at least two lifting guide columns arranged opposite to each other, a lifting beam, and a lifting drive mechanism; the at least two lifting guide columns arranged opposite to each other include a third lifting guide column and a fourth lifting guide column arranged opposite to each other; The third lifting guide column is slidably connected with a fourth sliding sleeve, the fourth lifting guide column is slidably connected with a fifth sliding sleeve, the lifting beam is respectively connected with the fourth sliding sleeve and the fifth sliding sleeve, and the second load loading device is arranged on the lifting beam; The sliding rails are located on both sides of the test bench base and are arranged along the sides of the test bench. The sliding base at the bottom of the third lifting guide column is slidably connected to the sliding rail on one side of the test bench base, and the sliding base at the bottom of the fourth lifting guide column is slidably connected to the sliding rail on the other side of the test bench base. The fourth sliding sleeve is provided with a fourth hydraulic locking component, which can lock the fourth sliding sleeve on the third lifting guide column; the fifth sliding sleeve is provided with a fifth hydraulic locking component, which can lock the fifth sliding sleeve on the fourth lifting guide column; The connecting portion of the second load-applying device is slidably connected in the length direction of the lifting beam of the second height-adjusting device, and the connecting portion of the second load-applying device comprises a sixth sliding sleeve, which is sleeved on the lifting beam of the second height-adjusting device and is rotatably connected with the lifting beam of the second height-adjusting device; a sixth hydraulic locking component is arranged on the sixth sliding sleeve to lock the sixth sliding sleeve on the lifting beam of the second height-adjusting device; there are at least M first load-applying devices, and the connecting portions of the M first load-applying devices are respectively slidably connected in the length direction of the lifting beam, and M is a positive integer greater than or equal to 2; At least M seat installation areas are arranged at a first position on the test bench base; When the M first load loading devices slide to the first combination position of the lifting beam, the load loading ends of the M first load loading devices all face the same seat installation area. When the M first load loading devices slide to the second combination position of the lifting beam, the load loading ends of the M first load loading devices respectively face different seat installation areas.

2. The seat fatigue testing system according to claim 1, characterized in that: Also includes: A linkage control unit, comprising a linkage controller and a linkage input device, wherein a controlled end of the linkage controller is electrically connected to the linkage input device, a first control end of the linkage controller is electrically connected to the lifting drive mechanism, and a second control end of the linkage controller is electrically connected to the first hydraulic locking component and / or the second hydraulic locking component; The linkage controller is configured to control the first hydraulic locking component and / or the second hydraulic locking component to unlock after receiving the lifting drive mechanism command signal from the linkage input device, control the lifting drive mechanism to move, and control the first hydraulic locking component and / or the second hydraulic locking component to lock after executing the lifting drive mechanism command.

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