A detection device for automobile fastener tensile experiment

Abstract

This utility model relates to the field of fastener tensile testing technology, specifically disclosing a testing device for automotive fastener tensile testing. The device includes a workbench, a guide mechanism fixedly mounted on the top of the workbench, and a lifting plate passing through the guide mechanism. A tension cylinder is installed between the workbench and the lifting plate, with the telescopic end of the tension cylinder fixedly mounted below the lifting plate. A clamping mechanism for holding fasteners is also provided on the workbench and the lifting plate. A protective component is fixedly mounted above the workbench. The protective component includes a stainless steel plate, with a sound-insulating rubber plate on the inner wall of the stainless steel plate. A transparent baffle is connected to the front end of the protective component via a hinge. A buffer damping block is provided between the sound-insulating rubber plate and the stainless steel plate. This utility model protects the stainless steel plate with the sound-insulating rubber plate, preventing damage to the stainless steel plate from fragments generated during fastener tensile fracture.

Description

Technical Field

[0001] This utility model relates to the field of fastener tensile testing technology, and in particular to a testing device for automotive fastener tensile testing. Background Technology

[0002] The automotive fastener tensile test involves stretching the specimen axially until it breaks by applying an axial tensile force. The basic tensile mechanical properties of the material are determined by recording the force and displacement curves. During the test, the fastener is clamped between two fixtures and then subjected to a uniform tensile force, typically until it breaks.

[0003] When existing automotive fastener tensile testing equipment is used, the fastener breaks and produces fragments. These fragments can fly out and cause injury to the test personnel if they get into their eyes. The existing publicly available technical solution, announcement number CN220633764U, discloses a testing device for tensile testing of automotive fasteners, including a base and bolt fasteners. The top surface of the base is provided with a protective shell for safety protection, which protects the fasteners during testing and prevents metal fragments from flying out when the bolt fasteners break.

[0004] In actual implementation, the above-mentioned technical solution has a simple protective shell structure. For small fragments, the simple protective shell structure has a certain protective effect. However, for larger fragments or fasteners that are not properly installed and become loose during the stretching process, the protective shell will be subjected to a large impact. In this case, the simple protective shell structure will not play a good role. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for tensile testing of automotive fasteners. The device uses a sound-insulating rubber plate to protect the stainless steel plate and prevent damage to the stainless steel plate from fragments generated when the fastener breaks under tension, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a testing device for tensile testing of automotive fasteners, comprising a workbench, a guide mechanism fixedly provided on the top of the workbench, and a lifting plate passing through the guide mechanism, a tension cylinder installed between the workbench and the lifting plate, and the telescopic end of the tension cylinder fixedly installed below the lifting plate, a clamping mechanism for clamping fasteners also provided on the workbench and the lifting plate, and a protective component fixedly installed above the workbench; The protective component includes a stainless steel plate, and the inner wall of the stainless steel plate is provided with a sound-insulating rubber plate. The front end of the protective component is connected to a transparent baffle via a hinge, and a buffer damping block is provided between the sound-insulating rubber plate and the stainless steel plate.

[0007] Preferably, the guiding mechanism includes guide columns passing through the inside of the lifting plate, and the two sets of guide columns are located between the two sets of tension cylinders.

[0008] Preferably, the guiding mechanism further includes a buffer disc spring sleeved on the surface of the guide post, and a rubber plate sleeved on the surface of the guide post is fixedly provided on the top of the buffer disc spring.

[0009] Preferably, the rubber plate and the lifting plate are parallel to each other, and the rubber plate is elastically connected to the worktable through a buffer disc spring, the bottom of which is fixed to the worktable.

[0010] Preferably, the clamping mechanism includes an upper clamping ring mounted on the lifting plate and a lower clamping ring mounted on the worktable, wherein the lower clamping ring and the upper clamping ring are both composed of two opposing semi-circular ring structures.

[0011] Preferably, a sliding frame is fixedly installed on both the lower and upper clamping rings, and a guide groove is provided at the connection between the sliding frame and the lifting plate and the worktable.

[0012] Preferably, the guide slide groove is provided with a guide slider, and the guide slider is provided with a bidirectional lead screw. The bidirectional lead screw is installed on the clamping ring of the semi-circular structure through two sets of lead screw sleeves.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up protective components, a sound-insulating rubber plate is installed on the inner wall of the stainless steel plate to buffer fragments or fasteners and prevent them from directly impacting the stainless steel plate, thereby reducing noise caused by collisions. At the same time, the buffer damping block provides elastic support for the sound-insulating rubber plate, improving the buffer protection effect on the stainless steel plate. 2. Through the set guide mechanism, the lifting plate slides on the guide column when it moves upward. The guide column guides the movement of the lifting plate and avoids positional deviation of the lifting plate during movement, which would affect the tension of the fastener. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a schematic diagram of the structure of the workbench of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of A in the middle; Figure 4 This is a cross-sectional structural diagram of the stainless steel plate of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Lifting plate; 3. Guide mechanism; 301. Rubber plate; 302. Buffer disc spring; 303. Guide column; 4. Tension cylinder; 5. Clamping mechanism; 501. Upper clamping ring; 502. Lower clamping ring; 503. Sliding frame; 504. Two-way lead screw; 505. Guide slider; 506. Guide groove; 6. Protective components; 601. Stainless steel plate; 602. Sound insulation rubber plate; 603. Buffer damping block; 7. Transparent baffle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a technical solution: Please see Figures 1 to 4 A testing device for tensile testing of automotive fasteners includes a workbench 1, a guide mechanism 3 fixedly installed on the top of the workbench 1, and a lifting plate 2 passing through the guide mechanism 3. A tension cylinder 4 is installed between the workbench 1 and the lifting plate 2, and the telescopic end of the tension cylinder 4 is fixedly installed below the lifting plate 2. A clamping mechanism 5 for clamping fasteners is also provided on the workbench 1 and the lifting plate 2. A protective component 6 is fixedly installed on the top of the workbench 1. The protective component 6 includes a stainless steel plate 601, and the inner wall of the stainless steel plate 601 is provided with a sound-insulating rubber plate 602. The front end of the protective component 6 is connected to a transparent baffle 7 via a hinge. A buffer damping block 603 is provided between the sound-insulating rubber plate 602 and the stainless steel plate 601.

[0019] By adopting the above technical solution, the fastener is located in the clamping mechanism 5. The upper part of the fastener moves upward through the lifting plate 2 to be stretched. Once the fastener breaks or slips, it can impact the stainless steel plate 601. The inner wall of the stainless steel plate 601 is provided with a sound-insulating rubber plate 602 to buffer the fragments or fasteners and prevent them from directly impacting the stainless steel plate 601, thereby reducing the noise caused by the collision. At the same time, it can also protect the stainless steel plate 601. The buffer damping block 603 can further provide elastic support for the sound-insulating rubber plate 602, improving the buffer protection effect on the stainless steel plate 601. The front end of the stainless steel plate 601 can be easily observed through the transparent baffle 7 to observe the stretching of the fastener.

[0020] Specifically, such as Figure 2 As shown, the guide mechanism 3 includes guide columns 303 passing through the inside of the lifting plate 2. Two sets of guide columns 303 are located between two sets of tension cylinders 4. The guide mechanism 3 also includes a buffer disc spring 302 sleeved on the surface of the guide column 303. A rubber plate 301 sleeved on the surface of the guide column 303 is fixedly provided on the top of the buffer disc spring 302. The rubber plate 301 is parallel to the lifting plate 2 and is elastically connected to the worktable 1 through the buffer disc spring 302. The bottom of the buffer disc spring 302 is fixed on the worktable 1.

[0021] By adopting the above technical solution, when the lifting plate 2 moves upward, it slides on the guide column 303. The guide column 303 guides the movement of the lifting plate 2. The length of the buffer disc spring 302 is greater than the length of the tension cylinder 4. If the tension cylinder 4 is damaged, the extension rod of the tension cylinder 4 will retract inward, and the lifting plate 2 will lose external force and move downward until the lifting plate 2 comes into contact with the rubber plate 301, thereby squeezing the buffer disc spring 302, thus preventing the lifting plate 2 from falling and damaging the tension cylinder 4 located between the lifting plate 2 and the worktable 1.

[0022] Specifically, such as Figure 3 As shown, the clamping mechanism 5 includes an upper clamping ring 501 mounted on the lifting plate 2 and a lower clamping ring 502 mounted on the worktable 1. Both the lower clamping ring 502 and the upper clamping ring 501 are composed of two opposing semi-circular ring structures. A sliding frame 503 is fixedly installed on both the lower clamping ring 502 and the upper clamping ring 501. A guide groove 506 is provided at the connection between the sliding frame 503 and the lifting plate 2 and the worktable 1. A guide slider 505 is provided inside the guide groove 506, and a bidirectional lead screw 504 is provided inside the guide slider 505. The bidirectional lead screw 504 is installed on the semi-circular ring structure clamping ring through two sets of lead screw sleeves.

[0023] By adopting the above technical solution, the bidirectional lead screw 504 can be driven to rotate by a knob or motor. Under the action of the lead screw sleeve, the two opposing semi-circular ring structure clamping rings slide relative to each other through the guide slider 505 and the guide groove 506, thereby achieving clamping and fixing of the lower and upper halves of the fastener through the lower clamping ring 502 and the upper clamping ring 501.

[0024] Working principle: Open the transparent baffle 7 and place the fastener in the clamping mechanism 5. The bidirectional lead screw 504 can be rotated by a knob or motor. Under the action of the lead screw sleeve, the two opposing semi-circular ring structures slide relative to each other through the guide slider 505 and the guide groove 506. Thus, the lower and upper halves of the fastener are clamped and fixed through the lower clamping ring 502 and the upper clamping ring 501. After the tension cylinder 4 is started, it drives the lifting plate 2 to move upward. The upper half of the fastener moves upward through the lifting plate 2 to be stretched. Once the fastener breaks or slips, it can impact the sound insulation rubber plate 602 on the stainless steel plate 601, but will not directly hit the stainless steel plate 601, reducing the noise caused by the collision. At the same time, it can also protect the stainless steel plate 601. The buffer damping block 603 can further provide elastic support for the sound insulation rubber plate 602, improving the buffer protection effect on the stainless steel plate 601. The experimenter can observe the tension of the fastener through the transparent baffle 7.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A testing device for tensile testing of automotive fasteners, comprising a workbench (1), characterized in that: A guide mechanism (3) is fixedly installed on the top of the workbench (1), and a lifting plate (2) is installed on the guide mechanism (3). A tension cylinder (4) is installed between the workbench (1) and the lifting plate (2), and the telescopic end of the tension cylinder (4) is fixedly installed below the lifting plate (2). A clamping mechanism (5) for clamping fasteners is also provided on the workbench (1) and the lifting plate (2). A protective component (6) is fixedly installed above the workbench (1). The protective component (6) includes a stainless steel plate (601), and the inner wall of the stainless steel plate (601) is provided with a sound-insulating rubber plate (602). The front end of the protective component (6) is connected to a transparent baffle (7) by a hinge. A buffer damping block (603) is provided between the sound-insulating rubber plate (602) and the stainless steel plate (601).

2. The testing device for tensile testing of automotive fasteners according to claim 1, characterized in that: The guiding mechanism (3) includes guide columns (303) passing through the inside of the lifting plate (2), and the two sets of guide columns (303) are located between the two sets of tension cylinders (4).

3. The testing device for tensile testing of automotive fasteners according to claim 2, characterized in that: The guide mechanism (3) also includes a buffer disc spring (302) sleeved on the surface of the guide post (303), and a rubber plate (301) sleeved on the surface of the guide post (303) is fixedly provided on the top of the buffer disc spring (302).

4. The testing device for tensile testing of automotive fasteners according to claim 3, characterized in that: The rubber plate (301) is parallel to the lifting plate (2), and the rubber plate (301) is elastically connected to the worktable (1) through a buffer disc spring (302). The bottom of the buffer disc spring (302) is fixed on the worktable (1).

5. The testing device for tensile testing of automotive fasteners according to claim 4, characterized in that: The clamping mechanism (5) includes an upper clamping ring (501) mounted on the lifting plate (2) and a lower clamping ring (502) mounted on the worktable (1). The lower clamping ring (502) and the upper clamping ring (501) are both composed of two opposing semi-circular ring structures.

6. The testing device for tensile testing of automotive fasteners according to claim 5, characterized in that: Sliding frames (503) are fixedly installed on both the lower clamping ring (502) and the upper clamping ring (501). Guide grooves (506) are provided at the connection between the sliding frame (503) and the lifting plate (2) and the worktable (1).

7. The testing device for tensile testing of automotive fasteners according to claim 6, characterized in that: The guide slide (506) is provided with a guide slider (505) inside, and the guide slider (505) is provided with a bidirectional lead screw (504) inside. The bidirectional lead screw (504) is installed on the clamping ring of the semi-circular structure through two sets of lead screw sleeves.

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