Pressure resistance testing device for building safety helmet

Abstract

The utility model relates to the technical field of building safety detection, and discloses a building safety helmet withstand voltage test device which comprises a detection table, a safety helmet is arranged in the middle of the top of the detection table, protection plates are fixedly connected to the left side and the right side of the top of the detection table, and fixing blocks are fixedly connected to the bottoms of the protection plates. A transverse press is fixedly connected to the adjacent sides of the fixing blocks, an arc-shaped pressure block is fixedly connected to the output end of the transverse press, a top plate is fixedly connected between the tops of the protection plates, a vertical press is fixedly connected to the bottom of the top plate, and a pressure sensor is fixedly connected to the output end of the vertical press. According to the utility model, through mutual cooperation among the driving motor, the screw rod, the gear and the rack, the bottoms of the safety helmets are fixed on the detection bench to the greatest extent, so that different safety helmets can be limited and fixed, and the safety helmets are prevented from jumping out of the detection bench due to too poor limiting performance during a withstand voltage test.

Description

Technical Field

[0001] The utility model relates to the technical field of building safety detection, in particular to a pressure resistance testing device for a building safety helmet. Background Art

[0002] After production, existing hard hats need to undergo pressure resistance testing to detect whether the quality of the hard hats is up to standard. The use of a pressure resistance testing device for construction hard hats can evaluate the pressure resistance of hard hats to ensure that they can provide effective head protection in dangerous environments such as construction sites. It is an important tool for safety management in the construction industry and helps to protect the lives of workers. It is mainly used to evaluate the ability of hard hats to protect the head when subjected to external forces to ensure that the hard hats meet relevant standards and regulations.

[0003] After searching, the existing Chinese patent announcement number is: CN219590078U, which provides a fire safety helmet testing device. The patent uses a concave seat and a rotating shaft to facilitate adjusting the angle of the rotating plate. When the bottom surface of the rotating plate is parallel to the top surface of the concave seat, due to the action of the limiting block, it is convenient to place and support the next safety helmet, making it convenient for the staff to take it.

[0004] Although the above patent can perform pressure resistance safety tests on construction safety helmets after production, the above-mentioned fire safety helmet testing device still has the following problems: because some of the edges of the safety helmets are beveled or protruding, the test placement table cannot firmly fix different safety helmets, so that the safety helmets cannot be fixed when they are under pressure during the test and jump out of the placement table, thereby affecting the test of the safety helmet.

[0005] In view of the above problems, a pressure test device for a construction helmet is proposed. Utility Model Content

[0006] The utility model aims to provide a pressure test device for construction helmets, which solves the problems in the background art that the helmets cannot be fixed under pressure during testing and jump out of the placement table, and that when the helmets are observed and inspected through an observation window, the broken fragments may injure surrounding workers.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure resistance testing device for a construction safety helmet, comprising a testing platform, a safety helmet is arranged in the middle of the top of the testing platform, protective plates are fixedly connected to the left and right sides of the top of the testing platform, a fixed block is fixedly connected to the bottom of the protective plate, a horizontal press is fixedly connected to the adjacent side of the fixed block, an arc-shaped pressure block is fixedly connected to the output end of the horizontal press, a top plate is fixedly connected between the tops of the protective plates, a vertical press is fixedly connected to the bottom of the top plate, a pressure sensor is fixedly connected to the output end of the vertical press, a testing plate is fixedly connected to the bottom of the pressure sensor, a connecting frame is fixedly connected to the bottom of the testing platform, a limiting mechanism is arranged on the top of the connecting frame, a rotating motor is arranged at the bottom of the connecting frame, a gear is fixedly connected to the output end of the rotating motor, a fixing plate is fixedly connected to the left and right sides of the outer wall of the connecting frame, a driving motor is fixedly connected to the opposite side of the top of the fixing plate, and a screw is fixedly connected to the output end of the driving motor.

[0008] By adopting the above technical scheme, through the mutual cooperation between the driving motor, the lead screw, the gear and the rack, the bottom of the safety helmet can be fixed on the test bench to the maximum extent, so that different safety helmets can be restricted and fixed, to prevent the safety helmet from jumping out of the test bench due to poor restriction performance during the pressure test, affecting the test of the safety helmet, and causing the safety helmet to break during the test and cause the fragments to fly. At the same time, the observation window on one side can conveniently observe the pressure test process of the safety helmet, and the test situation can be directly observed.

[0009] As a further description of the above technical solution: the limiting mechanism includes a sliding groove, which is fixedly connected to the connecting frame, and two connecting shafts are slidably connected to the top of the inner wall of the sliding groove, and a rack is passed through and fixedly connected to the top of the connecting shaft, and connecting plates are fixedly connected to the left and right sides of the sliding groove, and a sliding groove is passed through and set on the top of the detection platform.

[0010] By adopting the above technical solution, the rotation of the gear causes the two meshing racks to reciprocate in the sliding groove 21 .

[0011] As a further description of the above technical solution: a baffle is fixedly connected to the front end of the bottom of the top plate, a display is passed through and fixedly connected to the front side of the baffle, and an observation window is fixedly connected to the rear end of the bottom of the top plate.

[0012] By adopting the above technical solution, the tested data is displayed on the display on the baffle, which is convenient for operators to record data.

[0013] As a further description of the above technical solution: a protective door is arranged at the bottom of the baffle, and the front end of the protective door is rotatably connected to the protective plate at one side opposite to the front end.

[0014] By adopting the above technical solution, the protection door and the protection plate are restricted, and the safety helmet is prevented from being broken and fragments flying during detection.

[0015] As a further description of the above technical solution: the four corners of the bottom of the detection platform are fixedly connected to support rods, and the bottom of the support rods is fixedly connected to moving wheels.

[0016] By adopting the above technical solution, the moving wheels at the bottom of the support rod can move the helmet testing device, making it convenient to move the device everywhere.

[0017] As a further description of the above technical solution: the gear and the rack are meshingly connected, and the top of the rack is fixedly connected to a limiting frame.

[0018] By adopting the above technical solution, the gear and the rack are meshed and connected, and the top of the rack is fixedly connected to the limiting frame.

[0019] As a further description of the above technical solution: the outer ring of the screw rod is rotatably connected to a nut pair, and the top of the nut pair is fixedly connected to an arc-shaped limiting rod.

[0020] By adopting the above technical solution, the nut pair drives the arc-shaped limit rod to limit and fix the bottom of the safety helmet on the top of the test bench, so as to prevent the fragments from flying when breaking during the test.

[0021] As a further description of the above technical solution: the nut pair is slidably connected to the slide groove, and the slide groove is slidably connected to the limit frame.

[0022] By adopting the above technical solution, the nut pair and the arc-shaped limit rod slide left and right and front and back in the slide groove to fix different safety bottoms.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. The utility model provides a pressure test device for a construction helmet. First, the bottom of the helmet is fixed on the test bench to the maximum extent through the cooperation between the driving motor, the lead screw, the gear and the rack, so that different helmets can be restricted and fixed, and the helmets are prevented from jumping out of the test bench due to poor restriction performance during the pressure test, which affects the test of the helmet.

[0025] 2. The utility model provides a pressure test device for a construction helmet. Through the restrictions of a protective door and a protective plate, the safety helmet is broken during the test and the fragments are splashed. At the same time, an observation window on one side can conveniently observe the pressure test process of the safety helmet, and the test situation can be directly observed to prevent the fragments generated when the safety helmet collapses from injuring the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the overall front view internal three-dimensional structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall main stereoscopic structure of the utility model;

[0028] Figure 3 It is a schematic diagram of the limiting mechanism of the utility model;

[0029] Figure 4 It is a schematic diagram of the overall rear-view three-dimensional structure of the utility model.

[0030] In the figure: 1. test table; 2. arc-shaped pressure block; 3. safety helmet; 4. observation window; 5. display; 6. top plate; 7. baffle; 8. vertical press; 9. pressure sensor; 10. test plate; 11. horizontal press; 12. slide; 13. protective door; 14. support rod; 15. moving wheel; 16. driving motor; 17. fixed plate; 18. protective plate; 19. fixed block; 20. connecting plate; 21. sliding groove; 22. limit frame; 23. arc-shaped limit rod; 24. screw; 25. nut pair; 26. gear; 27. connecting frame; 28. rack; 29. ​​connecting shaft; 30. rotating motor. DETAILED DESCRIPTION

[0031] 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.

[0032] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0033] Combination Figure 1-3The utility model is a construction helmet pressure test device, comprising a test platform 1, a helmet 3 is arranged in the middle of the top of the test platform 1, an arc-shaped pressure block 2 is fixedly connected to the output end of the horizontal press 11, a top plate 6 is fixedly connected between the tops of the protective plates 18, a vertical press 8 is fixedly connected to the bottom of the top plate 6, a pressure sensor 9 is fixedly connected to the output end of the vertical press 8, a test plate 10 is fixedly connected to the bottom of the pressure sensor 9, a screw rod 24 is fixedly connected to the output end of the drive motor 16, a baffle 7 is fixedly connected to the front end of the bottom of the top plate 6, a display 5 is penetrated and fixedly connected to the front side of the baffle 7, and the top plate 6 An observation window 4 is fixedly connected to the rear end of the bottom, a protective door 13 is provided at the bottom of the baffle 7, and the opposite side of the front end of the protective door 13 is rotatably connected to the protective plate 18. The four corners of the bottom of the testing platform 1 are fixedly connected to the support rod 14, and the bottom of the support rod 14 is fixedly connected to the moving wheel 15. The gear 26 is meshed with the rack 28, and the top of the rack 28 is fixedly connected to the limiting frame 22. The outer ring of the screw rod 24 is rotatably connected to the nut pair 25, and the top of the nut pair 25 is fixedly connected to the arc-shaped limiting rod 23. The nut pair 25 is slidably connected to the slide groove 12, and the slide groove 12 is slidably connected to the limiting frame 22.

[0034] The two driving motors 16 at the bottom of the testing platform 1 drive the nut pair 25 on the screw rod 24 to move toward the middle in the slide groove 12, driving the arc-shaped limit rod 23 to limit the bottom of the safety helmet 3, so that the safety helmet 3 may break during the test and cause fragments to fly. At the same time, the observation window 4 on one side can conveniently observe the pressure test process of the safety helmet 3, and the test situation can be directly observed.

[0035] Combination Figure 3 and Figure 4 A connecting frame 27 is fixedly connected to the bottom of the detection platform 1, and a limiting mechanism is arranged on the top of the connecting frame 27. The limiting mechanism includes a sliding groove 21, and the sliding groove 21 is fixedly connected to the connecting frame 27. Two connecting shafts 29 are slidably connected to the top of the inner wall of the sliding groove 21. A rack 28 passes through and is fixedly connected to the top of the connecting shaft 29. Connecting plates 20 are fixedly connected to the left and right sides of the sliding groove 21. A sliding groove 12 passes through and is arranged on the top of the detection platform 1. A rotating motor 30 is arranged at the bottom of the connecting frame 27, and a gear 26 is fixedly connected to the output end of the rotating motor 30.

[0036] The rotating motor 30 is started, and the output end of the rotating motor 30 drives the gear 26 to rotate. The rotation of the gear 26 causes the two meshing racks 28 to reciprocate in the sliding groove 21. The horizontal presses 11 on both sides or the top vertical press 8 are restricted when performing a pressure test on the safety helmet 3, so that it can be firmly fixed on the test bench 1 for fixing.

[0037] Combination Figure 2A protective plate 18 is fixedly connected to the left and right sides of the top of the testing platform 1, a fixed block 19 is fixedly connected to the bottom of the protective plate 18, a fixed plate 17 is fixedly connected to the left and right sides of the outer wall of the connecting frame 27, a driving motor 16 is fixedly connected to the opposite side of the top of the fixed plate 17, and a transverse press 11 is fixedly connected to the adjacent side of the fixed block 19.

[0038] The protection door 13 and the protection plate 18 limit the safety helmet 3 from breaking and causing fragments to fly during testing. At the same time, the observation window 4 on one side can facilitate the observation of the pressure test process of the safety helmet 3, and the test situation can be directly observed to prevent the fragments generated when the safety helmet 3 collapses from injuring the operator.

[0039] Working principle: open the front side of the pressure test device and place the helmet 3 that needs to be pressure tested in the middle of the top of the test platform 1, start the vertical press 8 at the bottom of the top plate 6, and the pressure sensor 9 and the test plate 10 at the bottom of the vertical press 8 perform a pressure test on the top of the helmet 3. The test data is displayed on the display 5 on the baffle 7, which is convenient for the operator to record the data. The two drive motors 16 at the bottom of the test platform 1 drive the nut pair 25 on the screw rod 24 to move toward the middle in the slide slot 12, driving the arc limit rod 23 to limit the bottom of the helmet 3, so that the helmet 3 under test The bottom is restricted on the test bench 1, and different safety helmets 3 can be fixed. At the same time, the rotating motor 30 is started, and the output end of the rotating motor 30 drives the gear 26 to rotate. The rotation of the gear 26 causes the two meshing racks 28 to reciprocate in the sliding groove 21. The arc-shaped limit rod 23 connected to the top of the rack 28 in the sliding groove 21 limits the position of the bottom edge of the safety helmet 3. The horizontal press 11 on both sides or the top vertical press 8 are restricted when performing a pressure resistance test on the safety helmet 3, so that it can be firmly fixed on the test bench 1 to prevent affecting the test of the safety helmet 3.

[0040] 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.

[0041] 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 pressure test device for a construction helmet, comprising a test bench (1), characterized in that: A safety helmet (3) is arranged in the middle of the top of the detection platform (1); protective plates (18) are fixedly connected to the left and right sides of the top of the detection platform (1); a fixed block (19) is fixedly connected to the bottom of the protective plate (18); a transverse press (11) is fixedly connected to the adjacent side of the fixed block (19); an arc-shaped pressure block (2) is fixedly connected to the output end of the transverse press (11); a top plate (6) is fixedly connected between the tops of the protective plates (18); a vertical press (8) is fixedly connected to the bottom of the top plate (6); a pressure sensor (9) is fixedly connected to the output end of the vertical press (8) The bottom of the pressure sensor (9) is fixedly connected to a detection plate (10); the bottom of the detection platform (1) is fixedly connected to a connecting frame (27); the top of the connecting frame (27) is provided with a limiting mechanism; the bottom of the connecting frame (27) is provided with a rotating motor (30); the output end of the rotating motor (30) is fixedly connected to a gear (26); the left and right sides of the outer wall of the connecting frame (27) are fixedly connected to a fixing plate (17); the opposite side of the top of the fixing plate (17) is fixedly connected to a driving motor (16); the output end of the driving motor (16) is fixedly connected to a lead screw (24).

2. A construction helmet pressure test device according to claim 1, characterized in that: The limiting mechanism comprises a sliding groove (21), the sliding groove (21) is fixedly connected to a connecting frame (27), two connecting shafts (29) are slidably connected to the top of the inner wall of the sliding groove (21), a rack (28) passes through and is fixedly connected to the top of the connecting shaft (29), connecting plates (20) are fixedly connected to the left and right sides of the sliding groove (21), and a sliding groove (12) passes through and is provided on the top of the detection platform (1).

3. A construction helmet pressure test device according to claim 1, characterized in that: The front end of the bottom of the top plate (6) is fixedly connected to a baffle (7), the front side of the baffle (7) is penetrated by and fixedly connected to a display (5), and the rear end of the bottom of the top plate (6) is fixedly connected to an observation window (4).

4. A construction helmet pressure test device according to claim 3, characterized in that: A protective door (13) is provided at the bottom of the baffle (7), and the opposite side of the front end of the protective door (13) is rotatably connected to the protective plate (18).

5. A construction helmet pressure test device according to claim 1, characterized in that: The four corners of the bottom of the detection platform (1) are all fixedly connected to support rods (14), and the bottom of the support rods (14) is fixedly connected to moving wheels (15).

6. A construction helmet pressure test device according to claim 1, characterized in that: The gear (26) is meshingly connected with the rack (28), and the top of the rack (28) is fixedly connected to the limiting frame (22).

7. A construction helmet pressure test device according to claim 1, characterized in that: The outer ring of the screw rod (24) is rotatably connected to a nut pair (25), and the top of the nut pair (25) is fixedly connected to an arc-shaped limiting rod (23).

8. A construction helmet pressure test device according to claim 7, characterized in that: The nut pair (25) is slidably connected to the slide groove (12), and the slide groove (12) is slidably connected to the limiting frame (22).

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