Multi-person seat sandbag impact fatigue test device

Abstract

The utility model relates to a multi-person seat sandbag impact fatigue test device, comprising a test platform used for building and fixing each subsystem; the electric portal frame lifting platform is used for adjusting the impact height; the impact fatigue load loading system is used for repeatedly loading the impact seat load when the sandbag falls from the set height; the fixed stand column is used for fixing the impact fatigue load loading system; and the impact fatigue load control system is used for controlling the loading frequency and loading times of the impact load. According to the invention, 107 times (and more) of impact fatigue load borne by the multi-person seat in the actual use process can be simulated, the whole process is automatically and accurately controlled, and the complex, tedious and time-consuming repeated work of manual implementation is liberated. The method has great practical significance.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing, in particular to a multi-person seat sandbag impact fatigue testing device. Background Art

[0002] In order to study the product strength performance of multi-person seats after being subjected to impact fatigue loads during use, it is necessary to conduct impact fatigue tests on them. The specific content of the multi-person seat sandbag impact test is: first, under the preset height conditions, an object of specified weight (such as a sandbag) is freely dropped, and after completing the specified number of impacts, the deformation and other strength performance of the seat are evaluated.

[0003] Currently, in order to conduct impact fatigue tests on multi-person seats, the object needs to be dropped from a certain height and then lifted to the same height and dropped again to complete a certain number of cycles.

[0004] However, manually lifting heavy objects and then dropping them will not only fail to guarantee the test quality, but will also waste a lot of manpower and be inefficient. Therefore, a multi-person seat sandbag impact fatigue test device is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a multi-person seat sandbag impact fatigue test device, which can simulate the 10 7 The impact fatigue load of times (or more) is fully automated and precisely controlled, freeing up the manual labor to perform complex, tedious and time-consuming repetitive work, and solving the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-person seat sandbag impact fatigue test device, comprising a test platform, on which an electric gantry lifting platform, fixed columns and multi-person seats are arranged, on which the electric gantry lifting platform is arranged an impact fatigue load loading system, and on which an impact fatigue load control system is arranged.

[0007] Furthermore, the impact fatigue load loading system includes a cylinder, an electromagnet, a linear bearing slider, a linear bearing guide, a wire rope fixing bolt, a pulley fixing device, a shock-absorbing rubber pad, a wire rope, an impact load device, a shaft, a pulley, and a cylindrical roller bearing. One end of the cylinder is connected to a fixed column and the other end of the piston rod is connected to the electromagnet through a thread. The electromagnet magnetic switch is controlled by an impact fatigue load control system. When the magnetic switch is energized, the electromagnet has suction, and when the magnetic switch is de-energized, it has no suction. One end of the linear bearing guide is connected to the pulley fixing device by a screw and is used in conjunction with the linear bearing slider.

[0008] Furthermore, the linear bearing slider is provided with a threaded hole and a third through hole, the front end of the linear bearing slider is provided with a third through hole, one end of the wire rope passes through the third through hole, and the wire rope fixing bolt can be screwed into the threaded hole provided at the top of the linear bearing slider to press and fix the wire rope.

[0009] Furthermore, the pulley fixing device is provided with four waist-shaped holes on the upper part for connecting with the electric gantry lifting platform, the pulley fixing device is provided with a first through hole in the middle part, the wire rope passes through the first through hole, the pulley fixing device is provided with a shock-absorbing pad connecting countersunk hole in the middle part, the shock-absorbing pad connecting countersunk hole is provided with a shock-absorbing rubber pad inside, the pulley fixing device is provided with a bearing connecting countersunk hole at the front end, the bearing connecting countersunk hole is provided with a cylindrical roller bearing, a pulley and a shaft inside, the pulley fixing device is provided with a pulley fixing device connecting through hole at the rear end, and the pulley fixing device is connected to a linear bearing guide via the pulley fixing device connecting through hole.

[0010] Furthermore, a second through hole is provided on the shock-absorbing rubber pad, and the steel wire rope passes through the second through hole and is fixedly connected to the linear bearing slider.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0012] 1. The multi-person seat sandbag impact fatigue test device is equipped with a loading track to ensure multiple fatigue loading;

[0013] 2. The multi-person seat sandbag impact fatigue test device uses an electric gantry lifting platform to achieve fast and accurate adjustment of the impact height;

[0014] 3. The multi-person seat sandbag impact fatigue test device, combined with the counter and time relay in the impact fatigue control system, can achieve precise control of the loading frequency and loading times. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly structure of the utility model when an impact fatigue test is performed on a multi-person seat;

[0016] Figure 2 This is a schematic diagram of the structure of the impact fatigue load loading system of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly structure of the pulley, bearing, shaft, and pulley fixing device of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the linear bearing slider of the utility model;

[0019] Figure 5This is a schematic diagram of the three-dimensional structure of the pulley fixing device of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the shock-absorbing rubber pad of the utility model;

[0021] Figure 7 It is a block diagram of the overall structure of the utility model.

[0022] In the figure: 1. test platform, 2. electric gantry lifting platform; fixed column; 4. impact fatigue load loading system; 4-1. impact fatigue load control system; 5. multi-person seat; 6. cylinder; 7. electromagnet; 8. linear bearing guide; 9. linear bearing slider; 10. wire rope fixing bolt; 11. pulley fixing device; 12. shock-absorbing rubber pad; 13. wire rope; 14. sandbag; 15. shaft; 16. pulley; 17. cylindrical roller bearing; 901. fixed threaded hole; 902. third through hole; 1-1. fixed waist hole; 11-2. first through hole; 11-3. shock-absorbing pad connecting countersunk hole; 11-4. pulley fixing device connecting through hole; 11-5. bearing connecting countersunk hole; 12-1. second through hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-7 , an embodiment provided by the utility model:

[0025] A multi-person seat sandbag impact fatigue test device is used to perform impact fatigue tests on multi-person seats. The multi-person seat sandbag impact fatigue test device includes: a test platform 1, used to fix multi-person seats 5, an electric gantry lifting platform 2 and a fixed column 3, the test platform 1 is provided with evenly distributed threaded holes to facilitate the positioning of various systems and components, the electric gantry lifting platform 2 is used to fix the impact fatigue load loading system 4 and adjust the impact height, the impact fatigue load loading system 4 is used to apply impact loads to the multi-person seats 5, and the impact fatigue load control system 4-1 is connected to the impact fatigue load system 4 and is used to control the frequency and number of impact loads.

[0026] Follow the steps below during use:

[0027] First, the electric gantry lifting platform 2 is installed on the test platform 1 by screws;

[0028] Then, the pulley 16, the cylindrical roller bearing 17, and the shaft 15 are assembled on the pulley fixture 11;

[0029] Then, the assembled pulley fixing device 11 is connected to the electric gantry lifting platform 2 through the fixing waist hole 11-1;

[0030] Then, the rubber shock-absorbing pad 12 is placed into the shock-absorbing pad connection countersunk hole 11 - 3 of the pulley fixing device 11 to complete the connection between the rubber shock-absorbing pad 12 and the pulley fixing device 11 ;

[0031] Then, the linear bearing guide rail 8 is connected to the pulley fixing device connecting through hole 11-4 on the pulley fixing device 11 with bolts and nuts to complete the fixing of the linear bearing guide rail 8;

[0032] Then, the linear bearing slider 9 is inserted into the slot of the linear bearing guide rail 9 and the end surface of the linear bearing slider 9 is made to fit with the outer end surface of the rubber shock-absorbing pad 12;

[0033] Then, one end of the wire rope is passed through the pulley 16, the first through hole 11-2, the second through hole 12-1, and the third through hole 902;

[0034] Then, screw the wire rope fixing bolt 10 into the fixing threaded hole 901 to fix one end of the wire rope 13, and connect the other end to the sandbag 14;

[0035] Then, install the multi-person seat 5 on the test platform 1, and ensure that the sandbag 14 is located at the center of the seat cushion after falling;

[0036] Then, adjust the height of the electric gantry lifting platform 2 so that the falling height of the sandbag 14 meets the requirements;

[0037] Then, install the cylinder 6 on the fixed column 3 and connect the electromagnet 7. Adjust the installation height of the cylinder 6 and the installation position of the fixed column 3 according to the height and distance of the linear bearing slider 9 to ensure that the front end face of the electromagnet 7 fits with the rear end face of the linear bearing slider 9 when the cylinder 6 is extended. After the adjustment, fix the fixed column 3 to the test platform 1.

[0038] Then, repeat the above steps to install the impact fatigue load loading system 4 above each seat cushion of the multi-person seat 5;

[0039] Then, the impact fatigue load control system 4 - 1 is connected to the impact fatigue load loading system 4 to control the test frequency and the number of tests.

[0040] In summary, the multi-person seat sandbag impact fatigue test device can ensure multiple fatigue loading, can accurately adjust the impact height, can achieve precise control of the loading frequency and the number of loading times, and solves the problems raised in the background technology.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-person seat sandbag impact fatigue test device, comprising a test platform (1), characterized in that: The test platform (1) is provided with an electric gantry lifting platform (2), a fixed column (3) and a multi-person seat (5), the electric gantry lifting platform (2) is provided with an impact fatigue load loading system (4), and the impact fatigue load loading system (4) is provided with an impact fatigue load control system (4-1).

2. The multi-person seat sandbag impact fatigue test device according to claim 1, characterized in that: The impact fatigue load loading system (4) comprises a cylinder (6), an electromagnet (7), a linear bearing slider (9), a linear bearing guide rail (8), a wire rope fixing bolt (10), a pulley fixing device (11), a shock-absorbing rubber pad (12), a wire rope (13), an impact load device (14), a shaft (15), a pulley (16), and a cylindrical roller bearing (17). One end of the cylinder (6) is connected to a fixed column (3), and the other end of the piston rod is connected to the electromagnet (7) through a thread. The magnetic switch of the electromagnet (7) is controlled by the impact fatigue load control system (4-1). When the magnetic switch is powered on, the electromagnet has suction force, and when the magnetic switch is powered off, it has no suction force. One end of the linear bearing guide rail (8) is connected to the pulley fixing device (11) by a screw, and is used in conjunction with the linear bearing slider (9).

3. The multi-person seat sandbag impact fatigue test device according to claim 2, characterized in that: The linear bearing slider (9) is provided with a threaded hole (901) and a third through hole (902); the front end of the linear bearing slider (9) is provided with the third through hole (902); one end of the steel wire rope (13) passes through the third through hole (902); the steel wire rope fixing bolt (10) can be screwed into the threaded hole (901) provided at the top of the linear bearing slider (9) to press and fix the steel wire rope (13).

4. The multi-person seat sandbag impact fatigue test device according to claim 2, characterized in that: The pulley fixing device (11) is provided with four waist-shaped holes (11-1) on the upper part for connecting with the electric gantry lifting platform (2); the pulley fixing device (11) is provided with a first through hole (11-2) in the middle part, and the steel wire rope (13) passes through the first through hole (11-2); the pulley fixing device (11) is provided with a shock-absorbing pad connecting countersunk hole (11-3) in the middle part, and a shock-absorbing rubber pad is provided inside the shock-absorbing pad connecting countersunk hole (11-3). (12), a bearing connection counterbore (11-5) is arranged at the front end of the pulley fixing device (11), a cylindrical roller bearing (17), a pulley (16) and a shaft (15) are arranged inside the bearing connection counterbore (11-5), a pulley fixing device connection through hole (11-4) is arranged at the rear end of the pulley fixing device (11), and the pulley fixing device (11) is connected to a linear bearing guide rail (8) via the pulley fixing device connection through hole (11-4).

5. The multi-person seat sandbag impact fatigue test device according to claim 2, characterized in that: The shock-absorbing rubber pad (12) is provided with a second through hole (12-1), and the steel wire rope (13) passes through the second through hole (12-1) and is fixedly connected to the linear bearing slider (9).

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