Fixing device for testing strength of safety belt

Abstract

The utility model discloses a fixing device for safety belt strength testing, which relates to the technical field of safety belt strength testing and comprises a supporting platform and a fixing component, a fixing seat is arranged on the left side above the surface of the supporting platform, and the fixing component is arranged at the middle end of the top of the fixing seat. The fixing assembly comprises a servo motor, a lead screw, a connecting block, a connecting roller, a limiting groove, an anti-skid protrusion, a lead screw nut, a supporting rod, a movable plate, a limiting block, a sliding block and a sliding groove, and the connecting block is arranged at the end, away from the servo motor, of the lead screw. According to the fixing device for the safety belt strength test, the servo motor drives the screw rod to rotate, and the screw rod nut drives the supporting rod to longitudinally move along the outside of the screw rod, so that the sliding block at the top of the movable plate slides in the sliding groove, and therefore, when the movable plates approach each other, the safety belt is pressed into the limiting groove by using the limiting block, and the safety belt is clamped and fixed; and the safety belt is prevented from slipping in the strength testing process.

Description

Technical Field

[0001] The utility model relates to the technical field of seat belt strength testing, in particular to a fixing device for seat belt strength testing. Background Technique

[0002] An automobile seat belt, also known as a seat belt, is a kind of occupant restraint device. The seat belt consists of a buckle, a belt head, a webbing, a retractor and a load limiter. When encountering a sudden pull, the seat belt will automatically lock. In order to ensure the performance of the seat belt, it is necessary to conduct strength tests on it. During the seat belt strength test, it is necessary to fix the seat belt through a fixing device.

[0003] For example, the utility model with the application number CN202122550177.7 discloses a seat belt fixing device for seat belt strength testing. When this utility model is in use, it has the advantages of quick and convenient installation and being applicable to the fixation of different seat belts. However, the process is relatively cumbersome. For example, it is necessary to send the connecting roller into the fixing groove and then insert the limiting block into the rectangular groove, which takes a long time and affects the test efficiency.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a fixing device for seat belt strength testing is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fixing device for seat belt strength testing to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A fixing device for seat belt strength testing, including a support platform and a fixing component. A fixing seat is arranged on the left side above the surface of the support platform, and the fixing component is arranged in the middle of the top of the fixing seat. The fixing component includes a servo motor, a lead screw, a connecting block, a connecting roller, a limiting groove, an anti-slip protrusion, a lead screw nut, a support rod, a moving plate, a limiting block, a sliding block and a sliding groove. The output end of the servo motor penetrates through the fixing seat and is connected with the lead screw. The end of the lead screw away from the servo motor is provided with a connecting block, and the bottom end of the connecting block is connected with a connecting roller. The outer surface of the connecting roller is provided with a limiting groove, and the outer surface of the connecting roller is fixed with an anti-slip protrusion. The outside of the lead screw is connected with a lead screw nut, and the outside of the lead screw nut is connected with a support rod through a rotating shaft. The other end of the support rod is connected with a moving plate through a rotating shaft, and a limiting block is arranged below the side of the moving plate close to the lead screw. The top of the moving plate is connected with a sliding block, and the sliding groove is opened on the surface of the fixing seat.

[0007] Furthermore, a hydraulic rod is installed on the right side of the fixing seat, and the output end of the hydraulic rod is connected with a movable seat.

[0008] Furthermore, the fixed seat and the movable seat are symmetrically distributed about the vertical central axis of the surface of the support platform, and a fixing component is also installed at the middle end of the top of the movable seat.

[0009] Furthermore, the lead screw, the connecting block and the connecting roller are coaxially arranged, and the limiting grooves are annularly and equidistantly distributed along the outer circumference of the connecting roller.

[0010] Furthermore, there are four limiting grooves, moving plates and limiting blocks respectively, and the limiting blocks are in the shape of regular triangular prisms.

[0011] Furthermore, the structure of the limiting groove matches the structure of the limiting block, and the anti-slip protrusions are annularly and equidistantly distributed along the outer circumference of the connecting roller.

[0012] Furthermore, the lead screw and the moving plate are parallel to each other, and the moving plate is slidably connected to the sliding groove through a sliding block.

[0013] The utility model provides a fixing device for seat belt strength testing, which has the following beneficial effects:

[0014] 1. In the utility model, the servo motor drives the lead screw to rotate, and the lead screw nut drives the support rod to longitudinally displace along the outside of the lead screw, causing the sliding block on the top of the moving plate to slide in the sliding groove. Thus, when the moving plates approach each other, the seat belt is pressed into the limiting groove by the limiting blocks to clamp and fix the seat belt, avoiding the slippage of the seat belt during the strength test.

[0015] 2. When the two ends of the seat belt are fixed by two groups of fixing components and the surface is in a non-creased state, the hydraulic rod can be controlled to extend to make the movable seat horizontally displace away from the fixed seat, so that the seat belt is straightened due to the change in the increase of the distance between the movable seat and the fixed seat, that is, the tensile strength test of the seat belt is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a fixing device for seat belt strength testing according to the utility model;

[0017] Figure 2 It is a schematic diagram of the bottom view structure of the fixed seat of a fixing device for seat belt strength testing according to the utility model;

[0018] Figure 3 It is a three-dimensional structure schematic diagram of the connecting roller of a fixing device for seat belt strength testing according to the utility model.

[0019] In the figure: 1, support platform; 2, fixed seat; 3, hydraulic rod; 4, movable seat; 5, fixing component; 501, servo motor; 502, lead screw; 503, connecting block; 504, connecting roller; 505, limiting groove; 506, anti-slip protrusion; 507, lead screw nut; 508, support rod; 509, moving plate; 510, limiting block; 511, sliding block; 512, sliding groove. Detailed implementation manners

[0020] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] As Figures 1 to 3 shown, a fixing device for seat belt strength testing includes a support platform 1 and a fixing component 5. A fixed seat 2 is arranged on the upper left side of the surface of the support platform 1. The fixing component 5 is arranged at the middle end of the top of the fixed seat 2. The fixing component 5 includes a servo motor 501, a lead screw 502, a connecting block 503, a connecting roller 504, a limiting groove 505, an anti-slip protrusion 506, a lead screw nut 507, a support rod 508, a moving plate 509, a limiting block 510, a sliding block 511 and a sliding groove 512. The output end of the servo motor 501 penetrates through the fixed seat 2 and is connected to the lead screw 502. A connecting block 503 is arranged at one end of the lead screw 502 away from the servo motor 501. The bottom end of the connecting block 503 is connected to a connecting roller 504. A limiting groove 505 is opened on the outer surface of the connecting roller 504, and an anti-slip protrusion 506 is fixed on the outer surface of the connecting roller 504. A lead screw nut 507 is connected to the outside of the lead screw 502. The outside of the lead screw nut 507 is connected to a support rod 508 through a rotating shaft. The other end of the support rod 508 is connected to a moving plate 509 through a rotating shaft. A limiting block 510 is arranged below the side of the moving plate 509 close to the lead screw 502. A sliding block 511 is connected to the top of the moving plate 509. The sliding groove 512 is opened on the surface of the fixed seat 2. The lead screw 502, the connecting block 503 and the connecting roller 504 are coaxially arranged. The limiting grooves 505 are annularly and equidistantly distributed along the outer circumference of the connecting roller 504. There are four limiting grooves 505, moving plates 509 and limiting blocks 510 respectively. The limiting block 510 is in a regular triangular prism structure. The structure of the limiting groove 505 matches the structure of the limiting block 510. The anti-slip protrusions 506 are annularly and equidistantly distributed along the outer circumference of the connecting roller 504. The lead screw 502 and the moving plate 509 are parallel to each other. The moving plate 509 is slidably connected to the sliding groove 512 through the sliding block 511.

[0022] The specific operation is as follows. The servo motor 501 drives the lead screw 502 to rotate. The lead screw nut 507 drives the support rod 508 to perform longitudinal displacement along the outside of the lead screw 502, causing the sliding block 511 on the top of the moving plate 509 to slide in the chute 512. Thus, when the moving plates 509 approach each other, the safety belt is pressed into the limit groove 505 by the limit block 510, clamping and fixing the safety belt to prevent the safety belt from slipping during the strength test.

[0023] As Figure 1 shown, a hydraulic rod 3 is installed on the right side of the fixed seat 2, and the output end of the hydraulic rod 3 is connected to a movable seat 4. The fixed seat 2 and the movable seat 4 are symmetrically distributed about the vertical central axis of the surface of the support platform 1, and a fixing component 5 is also installed at the middle end of the top of the movable seat 4.

[0024] The specific operation is as follows. When the two ends of the safety belt are fixed by the two groups of fixing components 5 and the surface is in a non-creased state, the hydraulic rod 3 can be controlled to extend, causing the movable seat 4 to perform horizontal displacement away from the fixed seat 2, so that the safety belt is straightened due to the change in the increased distance between the movable seat 4 and the fixed seat 2, that is, the tensile strength test of the safety belt is realized.

[0025] In summary, for this fixing device for safety belt strength test, during use, first, a set of fixing components 5 is provided on each of the fixed seat 2 and the movable seat 4. When the hydraulic rod 3 retracts, the two ends of the safety belt to be tested are respectively wound around the outside of the connecting rollers 504 in the two groups of fixing components 5, and the two ends of the safety belt are pulled by hand to keep the surface of the safety belt as non-creased as possible;

[0026] At this time, the servo motor 501 is further controlled to drive the lead screw 502 to rotate. The lead screw nut 507 performs longitudinal displacement along the outside of the lead screw 502, changing the support angle of the support rod 508 for the moving plate 509, so that when the lead screw nut 507 moves downward, the sliding block 511 on the top of the moving plate 509 slides in the chute 512 towards the direction close to the lead screw 502. Thus, the safety belt is pressed into the limit groove 505 by the limit block 510 on one side below the moving plate 509, and the clamping and fixing of the safety belt can be completed. The anti-slip protrusions 506 are used to increase the friction force to prevent the safety belt from slipping during the strength test. During the process of the four moving plates 509 closing, the connecting roller 504 also rotates with the lead screw 502, so that the limit grooves 505 on the outer surface of the connecting roller 504 can correspond to the limit blocks 510 one by one;

[0027] After the two ends of the safety belt are fixed, the hydraulic rod 3 is extended to drive the movable seat 4 to perform horizontal rightward displacement to change the distance between the two connecting rollers 504, so that the safety belt is stressed and straightened, that is, the tensile strength test of the safety belt is realized. By implementing a simple fixing structure to fix the safety belt, the disadvantages of the existing fixing device with cumbersome steps and slow fixing speed are abandoned, and the test efficiency is improved.

[0028] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A fixing device for testing the strength of a safety belt, comprising a supporting platform (1) and a fixing assembly (5), characterized in that: A fixed seat (2) is arranged on the left side above the surface of the support platform (1); the fixed assembly (5) is arranged at the middle end of the top of the fixed seat (2); the fixed assembly (5) comprises a servo motor (501), a screw rod (502), a connecting block (503), a connecting roller (504), a limiting groove (505), an anti-slip protrusion (506), a screw nut (507), a support rod (508), a moving plate (509), a limiting block (510), a sliding block (511) and a sliding groove (512); the output end of the servo motor (501) passes through the fixed seat (2) and is connected to the screw rod (502); the end of the screw rod (502) away from the servo motor (501) is provided with a connecting block (503); and The bottom end of the connecting block (503) is connected to a connecting roller (504), a limiting groove (505) is provided on the outer surface of the connecting roller (504), and an anti-slip protrusion (506) is fixed on the outer surface of the connecting roller (504), the outside of the screw rod (502) is connected to a screw nut (507), and the outside of the screw nut (507) is connected to a support rod (508) via a rotating shaft, the other end of the support rod (508) is connected to a moving plate (509) via a rotating shaft, and a limiting block (510) is provided below a side of the moving plate (509) close to the screw rod (502), and a sliding block (511) is connected to the top of the moving plate (509), and the sliding groove (512) is provided on the surface of the fixed seat (2).

2. A safety belt strength test fixture according to claim 1, characterized in that: A hydraulic rod (3) is installed on the right side of the fixed seat (2), and the output end of the hydraulic rod (3) is connected to a movable seat (4).

3. A safety belt strength test fixture according to claim 2, characterized in that: The fixed seat (2) and the movable seat (4) are symmetrically distributed about the vertical center axis of the surface of the support platform (1), and a fixed component (5) is also installed at the top middle end of the movable seat (4).

4. A safety belt strength test fixture according to claim 1, characterized in that: The screw rod (502), the connecting block (503) and the connecting roller (504) are coaxially arranged, and the limiting grooves (505) are distributed in an annular shape and at equal intervals along the outer side of the connecting roller (504).

5. A safety belt strength test fixture according to claim 1, characterized in that: The limiting grooves (505), the movable plates (509) and the limiting blocks (510) are each provided in four numbers, and the limiting blocks (510) are in the shape of regular triangular prisms.

6. A safety belt strength test fixture according to claim 1, characterized in that: The structure of the limiting groove (505) matches that of the limiting block (510), and the anti-slip protrusions (506) are distributed in a ring-shaped manner and at equal intervals along the outer side of the connecting roller (504).

7. A safety belt strength test fixture according to claim 1, characterized in that: The screw rod (502) and the movable plate (509) are parallel to each other, and the movable plate (509) is slidably connected to the sliding groove (512) via a sliding block (511).

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