Safety guard strength detection auxiliary device

Abstract

This invention relates to an auxiliary device for testing the strength of safety protective gear, comprising a testing platform with a support frame mounted on it; a rolling groove is formed on the support frame, within which a universal ball is rotatably disposed; a support plate is also connected to the support frame, on which a rotatable rotating ring is disposed, and a rotation drive mechanism for driving the rotating ring to rotate is also mounted on the support plate; a connecting rod passing through the rotating ring is connected to the bottom end of the universal ball; a fixed frame is also connected to the support frame, on which a fixed ring is connected, and several sets of clamping components are disposed on the fixed ring; a push rod is disposed on the rotating ring. This invention, through the cooperation of the rotating ring and the various clamping components, allows for the tilting of the connecting rod and the angle change of the universal ball. Thus, without removing or disassembling the safety helmet or changing the position of the impact head assembly, testing of the top and side areas of the safety helmet can continue, effectively reducing manual workload and improving the completeness and representativeness of the test.

Description

Technical Field

[0001] This invention relates to the field of slope strength testing technology, and more specifically to an auxiliary device for testing the strength of safety gear. Background Technology

[0002] With the increasing national supervision of safe construction and the growing safety awareness of workers, all workers on construction sites are required to wear safety gear, the most common being the safety helmet. It provides some protection for the head and effectively reduces the chance of accidental injury or death during work. To ensure sufficient protection, safety helmets undergo impact absorption and puncture resistance testing before leaving the factory. Most existing testing devices use impact hammers and puncture hammers to test the helmets. However, these devices can only test the top area of ​​the helmet after positioning it. To test the sides, either the helmet needs to be repositioned or the impact and puncture hammers need to be adjusted, both of which require significant manual labor and reduce testing efficiency. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an auxiliary device for testing the strength of safety gear, so as to solve the problems of complex operation, large workload and low efficiency of the prior art.

[0004] This invention is achieved through the following technical solution:

[0005] An auxiliary device for testing the strength of safety gear includes a testing table with a support frame mounted on it.

[0006] The support frame is provided with a rolling groove, and a universal ball is rotatably installed in the rolling groove;

[0007] The support frame is also connected to a support plate, on which a rotatable rotating ring is provided, and a rotation drive mechanism for driving the rotating ring to rotate is also installed on the support plate.

[0008] The bottom of the omnidirectional ball is connected to a linkage rod that passes through the rotating ring, and the bottom of the linkage rod is connected to a gravity ball located below the rotating ring.

[0009] The support frame is also connected to a fixed frame, and the fixed frame is connected to a fixed ring. The fixed ring is provided with several sets of clamping assemblies arranged circumferentially along the linkage rod. Each clamping assembly includes a movable rod that passes through the fixed ring. An arc-shaped plate is connected to the inner side of the movable rod, and a conical head is connected to the outer end of the movable rod. The clamping assembly also includes a first spring that is connected to the arc-shaped plate and the fixed ring at both ends respectively. The first spring causes the movable rod to be positioned such that the arc-shaped plate abuts against the outer surface of the linkage rod, and the conical head is located outside the fixed ring.

[0010] The rotating ring is equipped with a push rod that can cooperate with the conical head to cause the movable rod to slide.

[0011] Furthermore, the outer surface of the linkage rod is provided with a plurality of linkage protrusions that abut against a plurality of the arc-shaped plates respectively.

[0012] Furthermore, the clamping assembly also includes two clamping guide groups located on both sides of the movable rod. The clamping guide group includes a clamping guide sleeve rod connected to the arc plate and a clamping guide sleeve partially sleeved on the clamping guide sleeve rod and connected to the fixed ring.

[0013] Furthermore, the rotation drive mechanism includes a mounting bracket mounted on the support plate, a rotation drive device mounted on the mounting bracket, and a drive gear connected to the output end of the rotation drive device;

[0014] A driven gear ring that meshes with the drive gear is sleeved on the rotating ring.

[0015] Furthermore, the transmission rod is also provided with a positioning hook located below the universal ball.

[0016] Furthermore, the transmission rod is also provided with a positioning adjustment mechanism;

[0017] The positioning and adjustment mechanism includes a fixed disc sleeved on the transmission rod and a movable disc sleeved on the transmission rod and movable relative to the transmission rod, wherein the positioning hook is connected to the movable disc;

[0018] The positioning adjustment mechanism also includes a positioning threaded tube connected to the movable disk and a positioning threaded rod rotatably connected to the fixed disk and threadedly engaged with the positioning threaded tube. A rocker wheel is connected to the bottom end of the positioning threaded rod.

[0019] Furthermore, a positioning guide sleeve is provided on the fixed plate;

[0020] The movable disk is provided with a positioning guide sleeve that is partially fitted onto the positioning guide rod.

[0021] Furthermore, the support frame is also provided with a limiting mechanism for limiting the rolling of the omnidirectional ball;

[0022] The limiting mechanism includes a fixed seat connected to the support frame, a T-shaped moving rod extending through the fixed seat, the large-diameter end of the T-shaped moving rod located outside the fixed seat, and a limiting friction block connected to the small-diameter end of the T-shaped moving rod;

[0023] The limiting mechanism also includes a second spring sleeved on the T-shaped moving rod. The second spring acts on the limiting friction block, causing the limiting friction block to abut against the universal ball.

[0024] The limiting mechanism also includes an electromagnet mounted on a fixed base and an iron block mounted on a limiting friction block that can electromagnetically engage with the electromagnet.

[0025] Furthermore, the working surface of the limiting friction block is provided with several friction grooves.

[0026] Furthermore, the testing platform is equipped with a vertical drive mechanism that can drive the support frame to move up and down.

[0027] Furthermore, the testing platform is equipped with a protective cover for surrounding the support frame.

[0028] The beneficial effects of this invention are as follows: In this invention, the rotation ring, in conjunction with each clamping component, allows for the tilting of the linkage rod and the change of the angle of the universal ball, thereby adjusting the position of the safety helmet relative to the impact head assembly. This allows for continued testing of the top and side areas of the safety helmet without disassembling or removing the helmet or changing the position of the impact head assembly, effectively reducing manual workload and improving the completeness and representativeness of the test. Furthermore, the positioning adjustment mechanism and positioning hook tighten the chin strap to position the safety helmet, improving its stability during testing and preventing accidental displacement. The limiting mechanism not only allows for the adjustment of the universal ball's angle but also limits the adjusted angle, preventing accidental rolling of the universal ball, thus effectively improving the accuracy of the test results. Attached Figure Description

[0029] Figures 1-2 This is a schematic diagram of the structure of a specific embodiment of the auxiliary device for testing the strength of safety gear according to the present invention during application;

[0030] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0031] Figure 4 and Figure 5 This is a schematic diagram of a specific embodiment of the auxiliary device for testing the strength of safety protective gear according to the present invention;

[0032] Figure 6 for Figure 4 Enlarged view of part B in the middle;

[0033] Figure 7 for Figure 4 Enlarged view of a section in the middle C;

[0034] Figure 8 for Figure 5 Enlarged view of a section in part D;

[0035] Figure 9 for Figure 8 A magnified view of part D in the middle.

[0036] In the diagram: 1. Detection device body; 101. Detection table; 102. Protective cover; 103. Impact head assembly; 201. Support plate; 202. Fixing frame; 203. Fixing ring; 204. Linkage protrusion; 205. Arc plate; 301. Clamping guide sleeve rod; 302. Clamping guide sleeve; 303. First spring; 401. Movable rod; 402. Conical head; 403. Circular ring; 404. Rotating ring; 405. Push rod; 501. Driven gear ring; 502. Drive gear; 601. Mounting frame; 602. Rotation drive device; 701. Fixed seat; 702. Limiting friction block; 801. Electromagnet; 80 2. Iron block; 803. T-shaped moving rod; 804. Second spring; 901. Adjusting guide sleeve rod; 902. Adjusting guide sleeve; 903. Height adjusting threaded tube; 904. Height adjusting threaded rod; 905. Third motor; 1001. Fixed plate; 1002. Positioning guide sleeve rod; 1003. Positioning guide sleeve; 1004. Positioning threaded rod; 1005. Positioning threaded tube; 1006. Rocker wheel; 11. Safety helmet; 1101. Chin strap; 12. Support frame; 13. Rolling groove; 14. Universal ball; 15. Linkage rod; 16. Gravity ball; 17. Moving plate; 18. Positioning hook; 19. Moving block. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0042] Please see Figure 1-9 The present invention provides a technical solution:

[0043] An auxiliary device for testing the strength of safety gear includes a testing table 101, on which a support frame 12 is installed;

[0044] The support frame 12 is provided with a rolling groove 13, and a universal ball 14 is rotatably disposed in the rolling groove 13;

[0045] A support plate 201 is also connected to the support frame 12. A rotatable rotating ring 404 is provided on the support plate 201. A rotation drive mechanism for driving the rotating ring 404 to rotate is also installed on the support plate 201.

[0046] The bottom end of the omnidirectional ball 14 is connected to a linkage rod 15 that passes through the rotating ring 404, and the bottom end of the linkage rod 15 is connected to a gravity ball 16 located below the rotating ring 404.

[0047] A fixed frame 202 is also connected to the support frame 12. A fixed ring 203 is connected to the fixed frame 202. Several sets of clamping components are arranged circumferentially along the linkage rod 15 on the fixed ring 203. Each clamping component includes a movable rod 401 that passes through the fixed ring 203. An arc plate 205 is connected to the inner side of the movable rod 401. A conical head 402 is connected to the outer end of the movable rod 401. The clamping component also includes a first spring 303 whose two ends are respectively connected to the arc plate 205 and the fixed ring 203. The first spring 303 causes the movable rod 401 to be positioned such that the arc plate 205 abuts against the outer surface of the linkage rod 15 and the conical head 402 is located outside the fixed ring 203.

[0048] The rotating ring 404 is provided with a push rod 405 that can cooperate with the conical head 402 to cause the movable rod 401 to slide.

[0049] In this embodiment, an impact head assembly 103 (including an impact hammer or a puncture hammer) is provided on the testing table 101. The safety helmet 11 is placed on the omnidirectional ball 14. At this time, the impact head assembly 103 can perform corresponding tests on the top area of ​​the safety helmet 11. When testing is required on other side areas of the safety helmet 11, the rotation drive mechanism is activated to rotate the rotating ring 404, and the push rod 405 moves accordingly. When the push rod 405 passes the specific conical head 402, the conical head 402, together with the movable rod 401, stretches the first spring 303 radially towards the axis of the fixed ring 203. This causes the linkage rod 15 to tilt in that direction. Correspondingly, the movable rod 401 and the conical head 402 of the clamping assembly on the other side of the linkage rod 15 compress the first spring 303 to make way for the tilted position. After the linkage rod 15 tilts, the universal ball 14 will roll appropriately in the rolling groove 13. This will cause the safety helmet positioned on the universal ball 14 to move accordingly. In this way, the side area of ​​the safety helmet can be moved to the top position, so that it can be tested by the impact head assembly 103.

[0050] Several sets of clamping components should be evenly distributed on the outer surface of the linkage 15. As the rotating ring 404 rotates, the push rod 405 can engage with the conical head 402 in any set of clamping components to achieve a specific tilt, thereby exposing a specific test area on the safety helmet directly below the impact head assembly 103.

[0051] When the push rod 405 is located in the area between two adjacent conical heads 402, the linkage 15 can be reset under the action of each first spring 303 and the gravity ball 16.

[0052] It is worth noting that the structure of the support frame 12 should have sufficient strength and stability to withstand the impact force of the impact head assembly 103.

[0053] Preferably, the outer surface of the linkage 15 is provided with a plurality of linkage protrusions 204 that abut against a plurality of the arc-shaped plates 205 respectively.

[0054] In this embodiment, the outer end of the linkage protrusion 204 can be spherical or hemispherical. When the linkage rod 15 is tilted due to force, the linkage protrusion 204 can reduce the friction between the arc plate 205 and the linkage rod 15, thereby improving the sensitivity of the linkage rod 15 to tilt.

[0055] Preferably, the clamping assembly further includes two clamping guide groups located on both sides of the movable rod 401. The clamping guide group includes a clamping guide sleeve 301 connected to the arc plate 205 and a clamping guide sleeve 302 partially sleeved on the clamping guide sleeve 301 and connected to the fixing ring 203.

[0056] In this embodiment, the stability of the movement of the movable rod 401 and the conical head 402 can be improved by the cooperation between the clamping guide sleeve 302 and the clamping guide rod 301.

[0057] To enable the rotation drive mechanism to drive the rotation of the rotating ring 404, preferably, the rotation drive mechanism includes a mounting bracket 601 mounted on the support plate 201, a rotation drive device 602 mounted on the mounting bracket 601, and a drive gear 502 connected to the output end of the rotation drive device 602.

[0058] The rotating ring 404 is fitted with a driven gear ring 501 that meshes with the drive gear 502.

[0059] In this embodiment, the rotation drive device 602 can be a geared motor. Activating the rotation drive device 602 drives the drive gear 502, which in turn drives the driven gear ring 501 and the rotating ring 404 to rotate.

[0060] Preferably, the transmission rod 15 is also provided with a positioning hook 18 located below the universal ball 14.

[0061] In this embodiment, the chin strap 1101 of the safety helmet 11 is passed through the positioning hook 18 and then assembled onto the safety helmet. The positioning hook 18 positions the chin strap 1101, which further improves the stability of the safety helmet 11's positioning. Figure 3 and Figure 4 As shown.

[0062] Preferably, the transmission rod 15 is further provided with a positioning adjustment mechanism;

[0063] The positioning adjustment mechanism includes a fixed disk 1001 sleeved on the transmission rod 15 and a movable disk 17 sleeved on the transmission rod 15 and movable relative to the transmission rod 15. The positioning hook 18 is connected to the movable disk 17.

[0064] The positioning adjustment mechanism also includes a positioning threaded tube 1005 connected to the movable disk 17 and a positioning threaded rod 1004 rotatably connected to the fixed disk 1001 and threadedly engaged with the positioning threaded tube 1005. A rocker wheel 1006 is connected to the bottom end of the positioning threaded rod 1004.

[0065] In this embodiment, when the chin strap 1101 becomes loose during the test, the rocker wheel 1006 can be rotated, and the distance between the moving disk 17 and the fixed disk 1001 can be adjusted by the cooperation of the positioning threaded rod 1004 and the positioning threaded tube 1005, thereby adjusting the tightness of the chin strap 1101 to achieve a more suitable position.

[0066] Preferably, the fixed disk 1001 is provided with a positioning guide sleeve 1002;

[0067] The movable disk 17 is provided with a positioning guide sleeve 1003 that is partially sleeved on the positioning guide sleeve 1002.

[0068] In this embodiment, the stability of the moving disk 17 moving up and down can be improved by the cooperation of the positioning guide sleeve 1003 and the positioning guide rod 1002.

[0069] Preferably, the support frame 12 is further provided with a limiting mechanism for limiting the rolling of the omnidirectional ball 14;

[0070] The limiting mechanism includes a fixed seat 701 connected to the support frame 12. A T-shaped moving rod 803 is provided through the fixed seat 701. The large diameter end of the T-shaped moving rod 803 is located outside the fixed seat 701, and the small diameter end of the T-shaped moving rod 803 is connected to a limiting friction block 702.

[0071] The limiting mechanism also includes a second spring 804 sleeved on the T-shaped moving rod 803. The second spring 804 acts on the limiting friction block 702, so that the limiting friction block 702 abuts against the universal ball 14.

[0072] The limiting mechanism also includes an electromagnet 801 mounted on a fixed base 701 and an iron block 802 mounted on a limiting friction block 702 and capable of electromagnetically engaging with the electromagnet 801.

[0073] In this embodiment, when the impact head assembly 103 impacts the safety helmet 11, a large impact force is generated. To prevent the omnidirectional ball 14 from rolling unexpectedly, a limiting mechanism is designed to limit the omnidirectional ball 14. Specifically, when it is necessary to tilt the linkage rod 15, the electromagnet 801 is energized to attract the iron block 802. At this time, the limiting friction block 702 disengages from the omnidirectional ball 14, and the omnidirectional ball 14 can roll as the linkage rod 15 is tilted. After the impact position is adjusted, the electromagnet 801 is de-energized. At this time, the limiting friction block 702 will abut against the omnidirectional ball 14, giving it a large friction force to limit the rolling of the omnidirectional ball 14. In this way, the accuracy of the detection results can be effectively improved.

[0074] To enhance friction, preferably, the working surface of the limiting friction block 702 is provided with a plurality of friction grooves.

[0075] Preferably, the testing platform 101 is provided with a vertical driving mechanism that can drive the support frame 12 to move up and down.

[0076] In this embodiment, to enable the up-and-down drive mechanism to drive the support frame 12, the support frame 12 can be connected to a movable seat 19. The up-and-down drive mechanism includes a height-adjusting threaded pipe 903 mounted on the testing table 101 and a height-adjusting threaded rod 904 rotatably connected to the movable seat 19 and capable of cooperating with the height-adjusting threaded pipe 903. The movable seat 19 is also equipped with a height-adjusting reduction motor 905 connected to the height-adjusting threaded rod 904. Activating the height-adjusting reduction motor 905 drives the height-adjusting threaded rod 904 to rotate, thereby achieving height adjustment of the movable seat 19 and the support frame 12. This facilitates adjustment of the distance between the safety helmet 11 and the impact head assembly 103. To improve the stability of the up-and-down movement of the movable seat 19 and the support frame 12, the testing table 101 is also equipped with an adjusting guide sleeve 901, and the movable seat 19 is connected with an adjusting guide sleeve 902 partially sleeved on the guide sleeve 901.

[0077] Preferably, the testing table 101 is provided with a protective cover 102 to surround the support frame 12. This prevents broken safety helmets from flying everywhere, effectively improving the safety performance of the work area.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An auxiliary device for testing the strength of safety protective gear, characterized in that: Includes a testing station (101), on which a support frame (12) is installed. A rolling groove (13) is provided on the support frame (12), and a universal ball (14) is rolled in the rolling groove (13). A support plate (201) is also connected to the support frame (12). A rotatable rotating ring (404) is provided on the support plate (201). A rotation drive mechanism for driving the rotating ring (404) to rotate is also installed on the support plate (201). The bottom end of the omnidirectional ball (14) is connected to a linkage rod (15) that passes through the rotating ring (404), and the bottom end of the linkage rod (15) is connected to a gravity ball (16) located below the rotating ring (404). A fixed frame (202) is also connected to the support frame (12). A fixed ring (203) is connected to the fixed frame (202). Several sets of clamping components are arranged in a circumferential direction along the linkage rod (15) on the fixed ring (203). Each clamping component includes a movable rod (401) that passes through the fixed ring (203). An arc plate (205) is connected to the inner side of the movable rod (401). A conical head (402) is connected to the outer end of the movable rod (401). The clamping component also includes a first spring (303) that is connected to the arc plate (205) and the fixed ring (203) at both ends respectively. The first spring (303) makes the position of the movable rod (401) configured such that the arc plate (205) abuts against the outer surface of the linkage rod (15), and the conical head (402) is located outside the fixed ring (203). The rotating ring (404) is provided with a push rod (405) that can cooperate with the conical head (402) to cause the movable rod (401) to slide.

2. The auxiliary device for testing the strength of safety protective gear according to claim 1, characterized in that: The outer surface of the linkage rod (15) is provided with a plurality of linkage protrusions (204) that abut against a plurality of the arc plates (205).

3. The auxiliary device for testing the strength of safety protective gear according to claim 1, characterized in that: The clamping assembly also includes two clamping guide groups located on both sides of the movable rod (401). The clamping guide group includes a clamping guide sleeve rod (301) connected to the arc plate (205) and a clamping guide sleeve (302) partially sleeved on the clamping guide sleeve rod (301) and connected to the fixing ring (203).

4. The auxiliary device for testing the strength of safety protective gear according to claim 1, characterized in that: The rotation drive mechanism includes a mounting bracket (601) mounted on the support plate (201), a rotation drive device (602) mounted on the mounting bracket (601), and a drive gear (502) connected to the output end of the rotation drive device (602). The rotating ring (404) is fitted with a driven gear ring (501) that meshes with the drive gear (502).

5. The auxiliary device for testing the strength of safety protective gear according to claim 1, characterized in that: The transmission rod (15) is also provided with a positioning hook (18) located below the universal ball (14).

6. The auxiliary device for testing the strength of safety protective gear according to claim 5, characterized in that: The transmission rod (15) is also provided with a positioning adjustment mechanism; The positioning adjustment mechanism includes a fixed disk (1001) sleeved on the transmission rod (15) and a movable disk (17) sleeved on the transmission rod (15) and movable relative to the transmission rod (15) and able to move up and down. The positioning hook (18) is connected to the movable disk (17). The positioning adjustment mechanism also includes a positioning threaded tube (1005) connected to the movable disk (17) and a positioning threaded rod (1004) rotatably connected to the fixed disk (1001) and threadedly engaged with the positioning threaded tube (1005). The bottom end of the positioning threaded rod (1004) is connected to a rocker wheel (1006). The fixed plate (1001) is provided with a positioning guide sleeve (1002). The movable disk (17) is provided with a positioning guide sleeve (1003) partially sleeved on the positioning guide sleeve rod (1002).

7. The auxiliary device for testing the strength of safety protective gear according to claim 1, characterized in that: The support frame (12) is also provided with a limiting mechanism for limiting the rolling of the universal ball (14); The limiting mechanism includes a fixed seat (701) connected to the support frame (12), a T-shaped moving rod (803) is provided through the fixed seat (701), the large diameter end of the T-shaped moving rod (803) is located outside the fixed seat (701), and the small diameter end of the T-shaped moving rod (803) is connected to a limiting friction block (702). The limiting mechanism also includes a second spring (804) sleeved on the T-shaped moving rod (803), the second spring (804) acting on the limiting friction block (702) so that the limiting friction block (702) abuts against the universal ball (14); The limiting mechanism also includes an electromagnet (801) mounted on a fixed base (701) and an iron block (802) mounted on a limiting friction block (702) and capable of electromagnetically engaging with the electromagnet (801).

8. The auxiliary device for testing the strength of safety protective gear according to claim 7, characterized in that: The working surface of the limiting friction block (702) is provided with several friction grooves.

9. The auxiliary device for testing the strength of safety protective gear according to any one of claims 1-8, characterized in that: The testing platform (101) is equipped with a vertical drive mechanism that can drive the support frame (12) to move up and down.

10. The auxiliary device for testing the strength of safety protective gear according to claim 9, characterized in that: The testing station (101) is provided with a protective cover (102) for surrounding the support frame (12).

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