Safety helmet impact resistance puncture tester

Abstract

The utility model discloses an impact puncture resistance tester for a safety helmet, which comprises a bottom plate, a transition shaft is fixedly connected to the middle of the top of the bottom plate, a hollow threaded circular ring is fixedly connected to the bottom of the outer circumferential surface of the transition shaft, and a hollow cylinder is arranged above the transition shaft. The left side and the right side of the hollow cylinder are symmetrically and fixedly connected with connecting blocks. By arranging a hollow cylinder, a tray, a first connecting rod, a second connecting rod, a buckle and a hook, the hollow cylinder is screwed on a transition shaft 2 through a hollow threaded circular ring, the tray is screwed on the hollow cylinder, and the tray and the hollow cylinder are connected through the buckle and the hook by utilizing flexible connection of the first connecting rod and the second connecting rod. And the tray can protect the bottom of the head die under the non-contact condition, so that the situation that the test structure is inaccurate due to the impact on the head die caused by rebound after the drop hammer falls off is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tester, especially safety helmet impact penetration tester. BACKGROUND

[0002] Safety helmet is the cap that protects the head from falling objects and other specific factors. Safety helmet is composed of helmet shell, helmet liner, chin strap and accessories. Safety helmet impact penetration tester is mainly used for testing the impact absorption and penetration performance of safety helmet.

[0003] When the safety helmet impact penetration tester conducts a penetration test, the falling hammer may contact the head model due to bouncing, which may cause the tester to misjudge. Therefore, the safety helmet impact penetration tester is provided to solve the problems in the background. UTILITY MODEL CONTENTS

[0004] The safety helmet impact penetration tester can protect the bottom of the head model without contact and effectively prevent the falling hammer from rebounding and impacting the head model, which may cause inaccurate test results. The safety helmet impact penetration tester can also protect the head model from being touched accidentally and improve the accuracy of the tester.

[0005] To achieve the above-mentioned purpose, the safety helmet impact penetration tester comprises a bottom plate, an overpass shaft fixedly connected to the top center of the bottom plate, a hollow threaded ring fixedly connected to the bottom of the outer circumference of the overpass shaft, a hollow cylinder provided above the overpass shaft, a third thread provided at the bottom of the inner circumference of the hollow cylinder, a second thread provided at the top of the outer cylinder surface of the hollow cylinder, a hollow threaded ring and a third thread threadedly connected, a connecting block fixedly connected to the left and right sides of the hollow cylinder, a first connecting rod rotatably connected to the right end of the connecting block, a hollow internal threaded column rotatably connected to the right end of the first connecting rod, a second connecting rod provided at the right side of the hollow internal threaded column, a first thread provided at the left end of the circumference of the second connecting rod, a first thread and a hollow internal threaded column threadedly connected, a buckle fixedly connected to the right end top of the first thread, a tray provided above the hollow cylinder, a hook fixedly connected to the bottom left and right sides of the tray, a buckle and a hook hung, a threaded hole provided in the middle of the tray, a threaded hole and a second thread threadedly connected, a support rod provided at the outer circumference of the tray, a second through hole provided at the upper and lower ends of the support rod, a third thread hole provided at the outer circumference of the tray, a second thread hole provided below the second through hole, and the second thread hole provided in the bottom plate. The second thread hole and the third thread hole are used to fix the support rod on the tray and the bottom plate, respectively.

[0006] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0007] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0008] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0009] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0010] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0011] According to the safety helmet impact penetration resistance tester, the first threaded hole is arranged on the circumference of the hollow threaded ring, the first through hole is arranged at the bottom of the circumference of the hollow cylinder, and the first screw is arranged outside the first through hole.

[0012] Beneficial effects:

[0013] 1. The utility model discloses a hollow cylinder, a tray, a first connecting rod, a second connecting rod, a buckle and a hook are arranged, the hollow cylinder is screwed on the transition shaft 2 through the hollow threaded ring, the tray is screwed on the hollow cylinder, the flexible connection between the tray and the hollow cylinder is utilized again to first connecting rod and second connecting rod, and the buckle and the hook are connected, so that flexible disassembly and assembly are realized, the tray protects the bottom of the head mould without contact, and effectively prevents the impact of the rebounding hammer on the head mould after falling, so that the inaccuracy of the test structure is avoided.

[0014] 2. The utility model discloses a supporting rod and a tray are arranged around the tray, and the supporting rod with a certain inclination angle is arranged around the tray, so that the hammer can rebound in the direction away from the head mould when falling, the hammer is prevented from falling in the direction of the head mould, the head mould is protected from being touched by mistake, and the accuracy of the tester is improved.

[0015] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. DESCRIPTION OF DRAWINGS

[0016] The utility model is further illustrated below in combination with the drawings and embodiments;

[0017] Figure 1 It is whole structure perspective display drawing of safety helmet impact penetration resistance tester of the utility model;

[0018] Figure 2 It is detail display of the utility model safety helmet impact penetration resistance tester's bracing bar;

[0019] Figure 3 It is detail view of tray bottom of safety helmet impact penetration resistance tester of the utility model;

[0020] Figure 4 It is Figure 3 Enlarged view of A in

[0021] Figure 5 It is detail view of tray bottom of safety helmet impact penetration resistance tester of the utility model.

[0022] Legend:

[0023] 1, bottom plate;2, transition shaft;3, hollow thread ring;4, first threaded hole;5, hollow cylinder;6, first through hole;7, first screw;8, connecting block;9, first connecting rod;10, hollow inner thread column;11, second connecting rod;12, first thread;13, buckle;14, second thread;15, tray;16, threaded through hole;17, hook;18, bracing bar;19, third thread;20, second through hole;21, second screw;22, second threaded hole;23, third threaded hole;24, head mold;25, guard plate;26, rack;27, drop hammer. Specific implementation

[0024] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings, and the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0025] Refer to Figures 1-5The utility model discloses a safety helmet impact penetration resistance tester, it includes bottom plate 1, the top middle fixed connection of bottom plate 1 has transition shaft 2, the bottom fixed connection of the outer circumference surface of transition shaft 2 has hollow thread ring 3, the top of transition shaft 2 is provided with hollow cylinder 5, the inner circumference surface bottom of hollow cylinder 5 is seted up with third thread 19, the outer cylindrical surface top of hollow cylinder 5 is seted up with second thread 14, hollow thread ring 3 is connected with third thread 19 screw, the left and right sides symmetry fixed connection of hollow cylinder 5 has connecting block 8, the right end rotation connection of connecting block 8 has first connecting rod 9, the right end rotation connection of first connecting rod 9 has hollow inner thread column 10, the left end of the circumference surface of second connecting rod 11 is seted up with first thread 12, first thread 12 is connected with hollow inner thread column 10 screw, the right end top fixed connection of first thread 12 has buckle 13, and buckle 13 is hung in the hook 17, and in the tightening of the second connecting rod 11, tray 15 is fastened on hollow cylinder 5, the top of hollow cylinder 5 is provided with tray 15, the bottom left and right sides fixed connection of tray 15 has hook 17, and buckle 13 is hung in hook 17, and the middle of tray 15 is seted up with threaded hole 16, threaded hole 16 is connected with second thread 14 screw, and the outside circumference of tray 15 is provided with bracing piece 18, and bracing piece 18 has certain inclination angle, can benefit when drop hammer 27 falls down, plays the protection effect to head mould 24, and drop hammer 27 is bounced to the direction of being away from head mould 24, the upper and lower ends of bracing piece 18 are all seted up with second through hole 20, and the outside circumference of tray 15 is seted up with third thread hole 23, and the lower second through hole 20 is provided with second thread hole 22, and second thread hole 22 is seted up in the inside of bottom plate 1.

[0026] The circumference of hollow thread ring 3 is seted up with first thread hole 4, and the bottom of the circumference of hollow cylinder 5 is seted up with first through hole 6, and the outside of first through hole 6 is provided with first screw 7, first screw 7 is inserted into first through hole 6 and is connected with first thread hole 4 screw, the upper second through hole 20 is provided with second screw 21, and the upper second screw 21 is inserted into second through hole 20 and is connected with third thread hole 23 screw, and the lower second screw 21 is inserted into second through hole 20 and is connected with second thread hole 22 screw, the top all around of bottom plate 1 is provided with guard plate 25, the rear side of rear guard plate 25 is provided with gantry 26, and the top of gantry 26 is provided with drop hammer 27, the top middle of transition shaft 2 is provided with head mould 24, the number of bracing piece 18 is multiple, buckle 13 is U-shaped, and hook 17 is L-shaped.

[0027] Working principle: the hollow cylinder 5 is screwed on the hollow threaded ring 3, the tray 15 is screwed on the hollow cylinder 5, the hollow cylinder 5 and the tray 15 surround the transition shaft 2 and the bottom of the head mold 24, then the support rod 18 is used to protect the head mold 24 by a circle on the outer periphery of the tray 15, the safety helmet is worn on the head mold 24, and the release hammer 27 is used to carry out the safety helmet safety test.

[0028] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A safety hat impact penetration resistance tester comprising: The bottom plate (1) is characterized in that the top middle of the bottom plate (1) is fixedly connected with a transition shaft (2), the bottom of the outer circumferential surface of the transition shaft (2) is fixedly connected with a hollow threaded ring (3), the upper part of the transition shaft (2) is provided with a hollow cylinder (5), the inner circumferential surface of the hollow cylinder (5) is provided with a third thread (19) at the bottom, the outer cylindrical surface of the hollow cylinder (5) is provided with a second thread (14) at the top, the hollow threaded ring (3) is threadedly connected with the third thread (19), the left and right sides of the hollow cylinder (5) are fixedly connected with a connecting block (8), the right end of the connecting block (8) is rotatably connected with a first connecting rod (9), the right end of the first connecting rod (9) is rotatably connected with a hollow inner threaded column (10), the right side of the hollow inner threaded column (10) is provided with a second connecting rod (11), the circumferential surface of the second connecting rod (11) is provided with a first thread (12) at the left end, the first thread (12) is threadedly connected with the hollow inner threaded column (10), the right end of the first thread (12) is fixedly connected with a buckle (13) at the top, the upper part of the hollow cylinder (5) is provided with a tray (15), the bottom of the tray (15) is fixedly connected with a hook (17) on the left and right sides, the buckle (13) is hung with the hook (17), the middle part of the tray (15) is provided with a threaded hole (16), the threaded hole (16) is threadedly connected with the second thread (14), the outer side of the tray (15) is provided with a supporting rod (18), the upper and lower ends of the supporting rod (18) are both provided with a second through hole (20), the outer side of the tray (15) is provided with a third threaded hole (23), the lower part of the second threaded hole (22) is provided with a second threaded hole (22) below the second through hole (20), and the second threaded hole (22) is arranged inside the bottom plate (1).

2. The safety hat impact penetration resistance tester of claim 1, wherein, The circumferential surface of the hollow threaded ring (3) is provided with a first threaded hole (4), the circumferential bottom of the hollow cylinder (5) is provided with a first through hole (6), and the outer side of the first through hole (6) is provided with a first screw (7).

3. The safety hat impact penetration resistance tester of claim 2, wherein, The first screw (7) is inserted into the first through hole (6) and is threadedly connected with the first threaded hole (4).

4. The safety hat impact penetration resistance tester of claim 1, wherein, The upper part of the second through hole (20) is provided with a second screw (21), the upper part of the second screw (21) is inserted into the second through hole (20) and is threadedly connected with the third threaded hole (23).

5. The safety hat impact penetration resistance tester of claim 4, wherein, The lower part of the second screw (21) is inserted into the second through hole (20) and is threadedly connected with the second threaded hole (22).

6. The safety hat impact penetration resistance tester of claim 1, wherein, The top of the bottom plate (1) is provided with a protective plate (25) around, the back of the protective plate (25) is provided with a rack (26), and the top of the rack (26) is provided with a drop hammer (27).

7. The safety hat impact penetration resistance tester of claim 1, wherein, The top end of the transition shaft (2) is provided with a head mold (24), the number of the supporting rods (18) is plural, the buckle (13) is U-shaped, and the hook (17) is L-shaped.

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