Special safety helmet strength detection equipment

Abstract

The utility model relates to the technical field of safety helmet detection, and provides special safety helmet strength detection equipment which comprises a test box, an observation window and a fixed bin, the observation window is arranged on the outer wall of one side of the test box, a protective door is movably installed below the observation window, and a handle is installed on the side, away from the inner wall of the test box, of the protective door. A fixing bin is welded to the inner wall of the bottom end of the testing box, a fixing block is installed on the inner wall of the fixing bin, a straight rod is installed at the top end of the fixing block, the other end of the straight rod is fixed to the inner wall of the fixing bin, a sleeve is movably installed on the outer wall of the straight rod, and third installation blocks are symmetrically welded to the outer walls of the two sides of the sleeve. Pull rods are hinged to the two sides of the sleeve through third mounting blocks, transmission rods are welded to the ends, away from the sleeve, of the pull rods, a second telescopic air cylinder is arranged below the fixing block, and the problems that in the prior art, potential safety hazards exist in testing, the safety helmet cannot be fixed, and the testing result is inaccurate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety helmet detection, and specifically, to a special safety helmet strength detection device. Background Technique

[0002] The technical background of the special safety helmet strength detection device in the laboratory mainly involves improving the accuracy, efficiency and comprehensiveness of safety helmet quality monitoring. Safety helmets are key personal protective equipment in industries, construction and other dangerous environments. Ensuring the quality and strength of safety helmets is a key factor in protecting personnel's heads from injury.

[0003] The patent specification with the publication number of CN 217981104 U discloses a special safety helmet strength detection device. By setting a cabinet body, a bottom plate for placing a safety helmet is horizontally arranged at the inner bottom of the cabinet body, and a clamping assembly for clamping the left and right sides of the safety helmet is arranged at the top of the bottom plate; above the bottom plate, there is an impact object for impacting the safety helmet. A T-shaped rod is fixed at the top of the impact object. Above the impact object, there is a mounting block, and a through groove for the rod to pass through from bottom to top is opened on the mounting block. The vertical section of the rod can freely rotate in the through groove; a manual winch for pulling the impact object is installed at the top of the cabinet body, and a through hole communicating inside and outside is opened at the top of the cabinet body. The movable end of the rope on the manual winch passes through the through hole and is fixed at the top of the mounting block. The utility model enables the safety helmet to be detected in various ways.

[0004] However, in the implementation of the related technology, there are the following problems with an existing special safety helmet strength detection device: The test result detects the safety helmet by dropping a heavy object with a winch. It is necessary to replace the heavy object for different test forces, which is troublesome to operate. At the same time, there is no protective structure during the test, which is easy to cause harm to the test personnel. Moreover, the device cannot fix the test position of the safety helmet during the test, affecting the test effect. For this reason, we propose a problem of a special safety helmet strength detection device. Content of the Utility Model

[0005] The utility model provides a special safety helmet strength detection device, which solves the problems of potential safety hazards in testing and inaccurate test results in the related technology.

[0006] The technical solution of the utility model is as follows:

[0007] A special safety helmet strength detection device, comprising a test box, an observation window and a fixed bin. An observation window is provided on the outer wall of one side of the test box. A protective door is movably installed below the observation window. A handle is installed on the side of the protective door away from the inner wall of the test box. A fixed bin is welded to the inner wall of the bottom end of the test box. A fixed block is installed on the inner wall of the fixed bin. A straight rod is installed at the top end of the fixed block. The other end of the straight rod is fixed to the inner wall of the fixed bin. A sleeve is movably installed on the outer wall of the straight rod. Third mounting blocks are symmetrically welded to the outer walls on both sides of the sleeve. Both sides of the sleeve are hinged to a pull rod through the third mounting blocks. Transmission rods are welded to the ends of the pull rods away from the sleeve. A second telescopic cylinder is provided below the fixed block. Both ends of the second telescopic cylinder are connected to the bottom ends of the transmission rods. First mounting blocks are symmetrically installed on the outer walls of both sides of the test box. The middle positions of the transmission rods are movably installed on the outer walls of both sides of the test box through the first mounting blocks. A second mounting block is movably installed at the end of the transmission rod away from the second telescopic cylinder. A slider is welded to the outer wall of the second mounting block. An extrusion plate is welded to the top end of the slider. A second chute is provided on the outer wall of the fixed bin on the side away from the second telescopic cylinder. The slider is movably installed on the outer wall of the fixed bin through the second chute.

[0008] Preferably, a first telescopic cylinder is installed on the inner wall of the top end of the test box, and a test hammer is connected to the output end of the first telescopic cylinder.

[0009] Preferably, triangular support plates are provided on the outer wall of the extrusion plate, and the test hammer is located directly above the extrusion plate.

[0010] Preferably, first chutes are symmetrically provided on the inner walls of both sides of the test box, and the first chutes are L-shaped.

[0011] Preferably, round convex bodies are provided at both ends of the protective door, and the round convex bodies are matched with the first chutes.

[0012] Preferably, a limiting groove is provided at the bottom end of the test box, and the protective door is matched with the limiting groove.

[0013] Preferably, the cross section of the slider is trapezoidal, and the second chute is matched with the slider.

[0014] Preferably, the extrusion plate is of a rectangular structure, and convex bodies are uniformly provided on the outer wall of one side of the extrusion plate.

[0015] The working principle and beneficial effects of the present utility model are:

[0016] 1. In the present utility model, by arranging the extrusion plate, the second telescopic cylinder and the sleeve, the safety helmet is placed in the middle position of the extrusion plate, so that the test point is aligned directly below the test hammer. The second telescopic cylinder is started, and the telescopic movement of the second telescopic cylinder drives the transmission rod to move. The middle position of the transmission rod is limited by the sleeve and the pull rod, so that the upper half of the transmission rod rotates around the first mounting block, and its upper end pushes the second mounting block. The extrusion plate is limited by the second chute, so that the extrusion plate moves translationally and approaches along the second chute with the slider, clamping and fixing the safety helmet in the middle. This structure can not only perform extrusion force tests on both sides of the safety helmet, but also fix the safety helmet, facilitating the strength inspection of its top.

[0017] 2. In the present utility model, by arranging the test box, the protective door and the first chute, the handle is manually pulled upwards. The protective door moves upwards through the vertical groove of the handle, and the protective door is rotated and pushed into the horizontal groove of the first chute to clamp the safety helmet, so that the protective door blocks above the test hammer to prevent the test hammer from falling and hitting the staff. After the safety helmet is fixed, the protective door is reset, and it is clamped at the bottom end of the test box through the bottom end of the limiting groove, making the whole test box in a closed state, and observing the inside through the observation window. This structure can not only provide protection in the pre-detection work, but also provide protection for the staff during the detection, and at the same time, the internal detection situation can be directly observed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the main structure of the device proposed by the present utility model;

[0020] Figure 2 It is a schematic diagram of the half-sectional structure of the main body of the device proposed by the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the fixed bin proposed by the present utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the pull rod proposed by the present utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the first chute proposed by the present utility model.

[0024] In the figure: 1, test box; 2, observation window; 3, protective door; 4, handle; 5, limit groove; 6, first telescopic cylinder; 7, test hammer; 8, first chute; 9, fixed bin; 10, second chute; 11, first mounting block; 12, transmission rod; 13, second mounting block; 14, slider; 15, extrusion plate; 16, second telescopic cylinder; 17, fixed block; 18, straight rod; 19, sleeve; 20, pull rod; 21, third mounting block. Specific implementation mode

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] Embodiment 1: As Figures 1 to 5 shown, this embodiment proposes a special safety helmet strength detection device, including a test box 1, an observation window 2 and a fixed bin 9. An observation window 2 is arranged on the outer wall of one side of the test box 1. A protective door 3 is movably installed below the observation window 2. A handle 4 is installed on the side of the protective door 3 away from the inner wall of the test box 1. A fixed bin 9 is welded on the inner wall of the bottom end of the test box 1. A fixed block 17 is installed on the inner wall of the fixed bin 9. A straight rod 18 is installed at the top of the fixed block 17. The other end of the straight rod 18 is fixed on the inner wall of the fixed bin 9. A sleeve 19 is movably installed on the outer wall of the straight rod 18. Third mounting blocks 21 are symmetrically welded on the outer walls on both sides of the sleeve 19. Pull rods 20 are hinged to both sides of the sleeve 19 through the third mounting blocks 21. Transmission rods 12 are welded to the ends of the pull rods 20 away from the sleeve 19. A second telescopic cylinder 16 is arranged below the fixed block 17. Both ends of the second telescopic cylinder 16 are connected to the bottom end of the transmission rod 12. First mounting blocks 11 are symmetrically installed on the outer walls on both sides of the test box 1. The middle position of the transmission rod 12 is movably installed on the outer walls on both sides of the test box 1 through the first mounting blocks 11. A second mounting block 13 is movably installed at the end of the transmission rod 12 away from the second telescopic cylinder 16. A slider 14 is welded on the outer wall of the second mounting block 13. An extrusion plate 15 is welded to the top of the slider 14. A second chute 10 is arranged on the outer wall of the fixed bin 9 away from the second telescopic cylinder 16. The slider 14 is movably installed on the outer wall of the fixed bin 9 through the second chute 10.

[0027] In this embodiment, a triangular support plate is arranged on the outer wall of the extrusion plate 15. The test hammer 7 is located directly above the extrusion plate 15.

[0028] In this embodiment, round convex bodies are arranged at both ends of the protective door 3. The round convex bodies are matched with the first chute 8.

[0029] In this embodiment, the cross-section of the slider 14 is trapezoidal, and the second chute 10 matches the slider 14.

[0030] In this embodiment, the extrusion plate 15 has a rectangular structure, and convex bodies are uniformly arranged on the outer wall of one side of the extrusion plate 15.

[0031] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 When using this structure to fix the safety helmet and test the force on the vehicle, place the safety helmet in the middle of the extrusion plate 15, align the test point directly below the test hammer 7, start the second telescopic cylinder 16, drive the transmission rod 12 to move through the telescopic movement of the second telescopic cylinder 16, use the sleeve 19 and the pull rod 20 to limit the middle position of the transmission rod 12, make the upper half of the transmission rod 12 rotate around the first mounting block 11 as the axis, push the upper end of it against the second mounting block 13, use the second chute 10 to limit the extrusion plate 15, make the extrusion plate 15 move translationally and approach along the second chute 10 with the slider 14, and clamp and fix the safety helmet in the middle. This structure can not only test the extrusion force on both sides of the safety helmet, but also fix the safety helmet, facilitating the strength inspection of its top.

[0032] Embodiment 2: A first telescopic cylinder 6 is installed on the inner wall of the top end of the test box 1, and the output end of the first telescopic cylinder 6 is connected to a test hammer 7.

[0033] In this embodiment, first chutes 8 are symmetrically arranged on the inner walls of both sides of the test box 1, and the first chutes 8 are L-shaped.

[0034] In this embodiment, a limiting groove 5 is provided at the bottom end of the test box 1, and the protective door 3 matches the limiting groove 5.

[0035] Specifically, as shown in Figure 1 , Figure 3 and Figure 5 When using this structure, manually pull up the handle 4, make the protective door 3 move upward through the vertical groove of the handle 4, rotate the protective door 3, push the protective door 3 into the horizontal groove of the first chute 8, clamp the safety helmet, make the protective door 3 block above the test hammer 7 to prevent the test hammer 7 from falling and hitting the staff. After the safety helmet is fixed, reset the protective door 3, make it snap onto the bottom end of the test box 1 through the limiting groove 5, make the whole test box 1 in a closed state, and observe the inside through the observation window 2. This structure can not only provide protection during the pre-detection work, but also protect the staff during the detection, and at the same time, the internal detection situation can be directly observed.

[0036] Working principle: When performing strength detection, manually pull the handle 4 upwards to drive the protective door 3 to move in the vertical groove of the first chute 8, rotate the protective door 3, and push the entire protective door 3 horizontally into the horizontal groove provided in the first chute 8, so that the first chute 8 is located directly below the test hammer 7. Place the safety helmet in the middle position of the pressing plate 15, start the second telescopic cylinder 16, push the bottom end of the transmission rod 12 to expand outwards, and utilize the limiting effect of the sleeve 19 and the pull rod 20 on the transmission rod 12 to make the upper half of the transmission rod 12 rotate clockwise with the first mounting block 11 as the axis. Through the articulated connection structure of the transmission rod 12 and the second mounting block 13, its top pushes the second mounting block 13, and then utilize the limiting effect of the second chute 10 and the slider 14 on the pressing plate 15 to make the pressing plate 15 move inwards under the thrust of the second mounting block 13, clamp and fix both sides of the safety helmet. Reset the protective door 3, and make its bottom be clamped and fixed at the bottom end of the test box 1 through the limiting groove 5. Observe the interior through the observation window 2, perform strength detection by applying pressure to both sides of the safety helmet by the pressing plate 15, and then start the first telescopic cylinder 6 to use the test hammer 7 to strike the top of the safety helmet for strength detection. This structure can provide protection for the staff during the detection, prevent the test hammer 7 from falling and hitting the staff during the pre-preparation of the safety helmet detection, and can stably clamp both sides of the safety helmet and apply pressure to both sides simultaneously during the strength detection of the safety helmet to detect the strength, making the detection data more comprehensive.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A special helmet strength testing device, comprising a test box (1), an observation window (2) and a fixed bin (9), characterized in that: An observation window (2) is provided on the outer wall of one side of the test box (1), a protective door (3) is movably installed below the observation window (2), a handle (4) is installed on the side of the protective door (3) away from the inner wall of the test box (1), a fixed bin (9) is welded to the inner wall of the bottom end of the test box (1), a fixed block (17) is installed on the inner wall of the fixed bin (9), a straight rod (18) is installed on the top of the fixed block (17), the other end of the straight rod (18) is fixed to the inner wall of the fixed bin (9), a sleeve (19) is movably installed on the outer wall of the straight rod (18), third mounting blocks (21) are symmetrically welded to the outer walls of both sides of the sleeve (19), both sides of the sleeve (19) are hingedly connected to pull rods (20) through the third mounting blocks (21), and the end of the pull rod (20) away from the sleeve (19) is welded to a transmission rod (1 2), a second telescopic cylinder (16) is arranged below the fixed block (17), the two ends of the second telescopic cylinder (16) are connected to the bottom end of the transmission rod (12), the outer walls of the two sides of the test box (1) are symmetrically mounted with first mounting blocks (11), the middle position of the transmission rod (12) is movably mounted on the outer walls of the two sides of the test box (1) through the first mounting block (11), the end of the transmission rod (12) away from the second telescopic cylinder (16) is movably mounted with a second mounting block (13), the outer wall of the second mounting block (13) is welded with a slider (14), the top end of the slider (14) is welded with an extrusion plate (15), the outer wall of the fixed bin (9) away from the second telescopic cylinder (16) is provided with a second slide groove (10), and the slider (14) is movably mounted on the outer wall of the fixed bin (9) through the second slide groove (10).

2. A special helmet strength testing device according to claim 1, characterized in that: A first telescopic cylinder (6) is installed on the inner wall at the top of the test box (1), and a test hammer (7) is connected to the output end of the first telescopic cylinder (6).

3. A special helmet strength testing device according to claim 2, characterized in that: The outer wall of the extrusion plate (15) is provided with a triangular support plate, and the test hammer (7) is located directly above the extrusion plate (15).

4. A special helmet strength testing device according to claim 1, characterized in that: The inner walls on both sides of the test box (1) are symmetrically provided with first sliding grooves (8), and the first sliding grooves (8) are L-shaped.

5. A special safety helmet strength testing device according to claim 1, characterized in that: Both ends of the protective door (3) are provided with round convex bodies, and the round convex bodies match the first sliding groove (8).

6. A special helmet strength testing device according to claim 1, characterized in that: A limiting groove (5) is provided at the bottom end of the test box (1), and the protective door (3) and the limiting groove (5) match each other.

7. A special helmet strength testing device according to claim 1, characterized in that: The cross section of the sliding block (14) is trapezoidal, and the second sliding groove (10) and the sliding block (14) match each other.

8. A special helmet strength testing device according to claim 1, characterized in that: The extrusion plate (15) has a rectangular structure, and the outer wall of one side of the extrusion plate (15) is evenly provided with protrusions.

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