CN218382173U

CN218382173U - Impact resistance detection device for safety helmet

Info

Publication number: CN218382173U
Application number: CN202222363136.1U
Authority: CN
Inventors: 程建军; 何聪; 吴英源; 张均丽
Original assignee: Guangdong Yaoke Engineering Testing Technology Co ltd
Current assignee: Guangdong Yaoke Engineering Testing Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-01-24
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses a safety helmet performance detection device technical field's an impact resistance detection device for safety helmet, the on-line screen storage device comprises a base, the type of falling L support, can open the pillar, pressure sensor, the layer board, the screw hole board, plastics five stars handle bolt, the head mould, the electro-magnet, plastics stop collar, spacing post, the puncture hammer, run through the through-hole, just reverse buncher, winding wire rope's winding up roller, drag hook subassembly and dynamometry display, manual operation just reverse buncher release wire rope, wire rope and drag hook subassembly pass can open and can insert after the pillar and run through in the hole, just reverse buncher can make wire rope rotate the winding through the winding up roller again and accomodate, spacing post and puncture hammer are mentioned, at last manual spacing post and the puncture hammer segment distance of lifting up make spacing post insert in the plastics stop collar, open the electro-magnet and make its absorption fixed, dismantle the drag hook subassembly, accomplish experiment preparation work, the device convenient operation, labor capacity has been reduced, and has the practicality.

Description

Impact resistance detection device for safety helmet

Technical Field

The utility model relates to a safety helmet performance detection device technical field specifically is a shock resistance detection device for safety helmet.

Background

The safety helmet is a hat which can protect the head of a person from being hurt by falling objects and other specific factors. The production of safety helmets has specific safety production standards, and national standards GB2811-2007 can know that the requirements of physical properties, technical properties and inspection rules, management, marks and packaging of safety helmets used in industry are stipulated, the safety helmets are suitable for safety helmets used in industry, and other supplemented special properties are only suitable for corresponding special places, and impact resistance detection needs to be carried out in the production process of the safety helmets, so that the safety helmets meet the standard requirements, and then impact resistance detection equipment needs to be designed. For example, CN209513203U discloses an impact resistance detection device for a safety helmet, which comprises an environment box, wherein the environment box is a rectangular box body, and a head die is arranged in the middle of the inner bottom surface of the environment box; the receiving switch a is arranged at the central position of the top surface in the environment box; the central position of the bottom surface of the receiving switch a is connected with the conical head group; the cone head group comprises an electromagnet rod and a puncture hammer; the bottom end of the electromagnet rod is provided with a sucker type electromagnet, and the sucker type electromagnet is electrically connected with the receiving switch a; the bottom end of the puncture hammer is opposite to the center of the top surface of the head die; the electric heating tubes are arranged on two sides in the environment box and are electrically connected with the receiving switch b; a remote control receiving switch a is arranged in the receiving switch a, and a remote control receiving switch b and an environment temperature controller are arranged in the receiving switch b; this scheme adopts sealed structure, can better control safety helmet impact resistance test's ambient temperature, conveniently detect safety helmet impact resistance under the uniform temperature, but the device need manually lift awl head group from the below to the top adsorb fixedly, intensity of labour is great, can make the experimenter arm ache when detecting for a long time, so need design the impact resistance detection device who conveniently lifts the weight of whereabouts among the actual testing process urgently, based on this, the utility model discloses a an impact resistance detection device for safety helmet to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shock resistance detection device for safety helmet to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an impact resistance detection device for safety helmet, includes base and the type of falling L support, the type of falling L support vertical fixation is in the upper surface rear side central authorities of base, the inboard middle part of the type of falling L support is vertical to be fixed with and to open the pillar, can open the pillar and constitute by two semicircle pipes that hinge and hasp are connected, the upper surface front side of base just is located and to be fixed with pressure sensor under can opening the pillar, pressure sensor's top block has the layer board, the top of layer board is vertical to be fixed with a pair of screw hole board about can opening pillar central symmetry interval, the level runs through the spiro union has plastics five star handle bolt, both sides between the plastics five star handle bolt centre gripping has the head mould, the inner chamber top of the type of falling L support is fixed with the diaphragm, the bottom central authorities of diaphragm are fixed with the electro-magnet, the outer wall below of electro-magnet is fixed with plastics stop collar, the bottom of electro-magnet adsorbs the spacing post of pegging graft at plastics stop collar inner chamber, the bottom of spacing post puncture, be provided with around the coaxial outer wall of the spacing post around, the outer wall of the speed governing motor is fixed with the wire rope winding signal of the outer wall of the wire rope, the fixed the outer wall of the motor shaft is connected the turn-up the pressure of the rotary cabinet, the pressure of the wire rope connects the fixed with the drag hook and is installed the backward rotary signal of the drag hook and is fixed the backward rotary cabinet, the reverse type of the drag-roll cabinet, the drag-type of the motor.

Preferably, a grid plate positioned between the openable protection tube and the inverted-L-shaped bracket is fixed on the upper surface of the base.

Preferably, a triangular rib plate is welded between the lower part of the outer wall of the inverted L-shaped support and the rear side of the upper surface of the base.

Preferably, roller chain plates are embedded and fixed in the inner walls of the two semicircular pipes of the openable protection pipe in a protruding mode.

Preferably, a guide plate is obliquely fixed on the right side of the top of the rear semicircular tube of the openable protection tube.

Preferably, the drag hook subassembly includes the hard plastic coupler body that the long right side in left side is short, the internal surface that the left side of hard plastic coupler body is close to the outer end is provided with the installation blind hole, the vertical fixation stretches out there is the spring beam in the installation blind hole, the right side of hard plastic coupler body has cup jointed U type piece through the pivot rotation, the outer end of U type piece is provided with the spacing jack that is used for connecting wire rope, the outer wall of U type piece runs through the spiro union and has extended to the spacing bolt of spacing jack inboard.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a spacing post and the puncture hammer of electro-magnet absorption body coupling, place safety helmet experimental samples on the head mould, pressure sensor can measure initial pressure state, utilize the dynamometry display to show, after the electro-magnet outage, spacing post and puncture hammer pound to safety helmet experimental samples under the action of gravity, pressure sensor and dynamometry display can cooperate and measure impact pressure, know this batch of experimental samples's shock resistance, if send the metal impact sound, explain that the puncture hammer has impaled safety helmet experimental samples, then this sample is unqualified, fall behind when spacing post and puncture hammer are whole, manual operation just reverse buncher release wire rope, wire rope and drag hook subassembly can insert the perforating hole after passing and can opening the pillar, just reverse buncher can make wire rope rotate the winding again through the winding, spacing post and puncture hammer are mentioned, it makes spacing post insert in the spacing cover to lift spacing post and puncture hammer apart from manually at last, it adsorbs fixedly to open the electro-magnet, dismantle the drag hook subassembly, accomplish and prepare experimental work, the device convenient operation, the amount has been reduced, the amount of labor, practical utility model has.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic structural view of the hook assembly of fig. 1.

In the drawings, the reference numbers indicate the following list of parts:

1-base, 2-inverted L-shaped bracket, 3-openable protective tube, 4-pressure sensor, 5-supporting plate, 6-threaded pore plate, 7-plastic five-star handle bolt, 8-head die, 9-containing cabinet, 10-transverse plate, 11-electromagnet, 12-plastic limiting sleeve, 13-limiting column, 14-puncturing hammer, 15-through hole, 16-positive and negative rotation speed regulating motor, 17-winding roller, 18-drag hook component, 19-force measuring display, 180-hard plastic hook body, 181-installation blind hole, 182-spring rod, 183-U-shaped block, 184-limiting jack and 185-limiting bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an impact resistance detection device for a safety helmet comprises a base 1, an inverted L-shaped support 2 and a supporting plate 5, wherein the inverted L-shaped support 2 is vertically fixed at the center of the rear side of the upper surface of the base 1, a triangular rib plate is welded between the lower part of the outer wall of the inverted L-shaped support 2 and the rear side of the upper surface of the base 1 to prevent the inverted L-shaped support 2 and the base 1 from being broken, an openable protection pipe 3 is vertically fixed at the middle part of the inner side of the inverted L-shaped support 2 through an upper welding cross beam and a lower welding cross beam, the openable protection pipe 3 is composed of two semicircular pipes connected through a hinge and a lock catch, wherein the hinge is installed above and below the joint end surfaces of the two semicircular pipes, a movable part and a fixed part of the lock catch are respectively installed on the other outer wall of the two semicircular pipes, a grid plate positioned between the openable protection pipe 3 and the inverted L-shaped support 2 is fixed on the upper surface of the base 1 to play a protection role, prevent unqualified safety helmet experimental samples from being splashed and injured to an operator standing at the rear side by fragments generated by collision, a pressure sensor 4 is fixed at the front side of the upper surface of a base 1 and is positioned under an openable protection tube 3, the top of the pressure sensor 4 is matched and clamped by a groove arranged at the bottom of a supporting plate 5, a pair of threaded hole plates 6 is vertically fixed at the top of the supporting plate 5 at intervals symmetrically relative to the center of the openable protection tube 3, a plastic five-star handle bolt 7 horizontally penetrates through the threaded hole plates 6 in a threaded manner, an arc-shaped clamping block is rotatably arranged between the outer ends of the plastic five-star handle bolts 7 at two sides through a bearing to clamp a head die 8, the head die 8 is selected according to the safety helmet experimental samples with different inner cavity shapes and sizes, a transverse plate 10 is fixed at the top of an inner cavity of an inverted L-shaped support 2, an electromagnet 11 is fixed at the center of the bottom of the transverse plate 10, a plastic limit sleeve 12 is fixed below the outer wall of the electromagnet 11, the bottom of the electromagnet 11 is magnetically adsorbed with a limit column 13 inserted in an inner cavity of a plastic limit sleeve 12, the bottom of the limit column 13 is coaxially welded with a puncture hammer 14, the puncture hammer 14 is enabled to coincide with a vertical axis of an openable guard tube 3 and a head die 8, a through hole 15 is arranged between the front side and the rear side of the outer wall of the limit column 13, a forward-reverse speed regulating motor 16 is fixed on the right side of the bottom of a transverse plate 10, a winding roller 17 wound with a steel wire rope is fixedly sleeved on the outer wall of a motor shaft of the forward-reverse speed regulating motor 16, a drag hook assembly 18 is fixed on the outer end of the steel wire rope, a containing cabinet 9 is installed in the middle of the back of the inverted L-shaped support 2, a force measuring display 19 connected with a pressure sensor 4 is installed in the inner cavity of the containing cabinet 9, rollers are fixed on the inner walls of two semicircular tubes of the openable guard tube 3 in a protruding mode through screws, when the integral body formed by pulling the limit column 13 and the puncture hammer 14 upwards, the limit column 13 and the inner wall of the openable guard tube 3 are prevented from repeatedly impacting and rubbing, the roller can reduce the moving resistance, and meanwhile, a guide plate is obliquely fixed on the right side of the top of the semicircular tube 3 behind the openable guard tube, the guard plate is located below the drag hook assembly, and can automatically release the drag hook assembly 18, and can automatically release the drag hook in the drag hook 3.

Referring to fig. 3, the retractor assembly 18 includes a hard plastic hook 180 with a long left side and a short right side, the hard material may be nylon 66, a blind mounting hole 181 is formed in an inner surface of the left side of the hard plastic hook 180 near an outer end, a spring rod 182 is vertically fixed in the blind mounting hole 181, the spring rod 182 can be completely retracted into an inner cavity of the blind mounting hole 181 by pressing, a U-shaped block 183 is rotatably sleeved on the right side of the hard plastic hook 180 through a rotating shaft, a limiting insertion hole 184 for connecting a steel wire rope is formed in an outer end of the U-shaped block 183, a limiting bolt 185 extending to an inner side of the limiting insertion hole 184 penetrates through an outer wall of the U-shaped block 183, and specifically: after the steel wire rope is inserted into the limiting blind hole 184, the steel wire rope is fixed by screwing the limiting bolt 185.

Use the utility model relates to a during shock resistance detection device for safety helmet: firstly, an electromagnet 11 is connected with a lead and a plug through a remote control switch and a step-down rectifier, the rotating speed of a forward and reverse speed regulating motor 16 is adjusted to a proper value, the electric equipment is integrally connected with commercial power through the lead and the plug, a proper head die 8 is fixed, a safety helmet experiment sample is clamped at the top of the head die, a steel wire rope is released through the forward and reverse speed regulating motor 16, then a spring rod 182 is pressed, a hard plastic hook body 180 is inserted into a through hole 15, the spring rod 182 is popped out after passing through the through hole 15, further the hard plastic hook body 180 is prevented from being separated from a limit post 13, the forward and reverse speed regulating motor 16 can rotate reversely to enable the steel wire rope to drive the limit post 13 and a puncture hammer 14 to move upwards, finally, the limit post 13 and the puncture hammer 14 are manually lifted for a short distance to enable the limit post 13 to be inserted into a plastic limit sleeve 12, the electromagnet 11 is opened to be adsorbed and fixed, then the spring rod 182 is pressed and the hard plastic hook body 180 is pulled outwards, and experiment preparation work is completed;

at the start of the experiment: the pressure sensor 4 can measure the initial pressure state, the force measurement display 19 is used for displaying, when the electromagnet 11 is powered off, the limiting column 13 and the puncture hammer 14 smash towards the safety helmet experimental sample under the action of gravity, the pressure sensor 4 and the force measurement display 19 can be matched for measuring impact pressure, the impact resistance of the batch of experimental samples is known, and if metal impact sound is emitted, the puncture hammer 14 pierces the safety helmet experimental sample to be in contact with the head die 8, the sample is unqualified.

It is worth noting that: the model of the pressure sensor is DEE-A-5T, the model of the force measuring display is YL-325, the model of the electromagnet is XDA-34/25, the model of the positive and negative rotation speed regulating motor is 3IK15RGN, all the devices are common devices, and belong to the prior mature technology, and the electrical connection relationship, the specific circuit structure and the using operation method are not repeated herein.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an impact resistance detection device for safety helmet, includes base (1) and type of falling L support (2), its characterized in that: the device is characterized in that the inverted L-shaped support (2) is vertically fixed in the center of the rear side of the upper surface of the base (1), an openable protective tube (3) is vertically fixed in the middle of the inner side of the inverted L-shaped support (2), the openable protective tube (3) is composed of two semicircular tubes connected through a hinge and a lock catch, a pressure sensor (4) is fixed in the front of the upper surface of the base (1) and is positioned right below the openable protective tube (3), a supporting plate (5) is clamped at the top of the pressure sensor (4), a pair of threaded hole plates (6) are vertically fixed at the top of the supporting plate (5) at intervals symmetrically with respect to the center of the openable protective tube (3), a plastic five-star handle bolt (7) horizontally penetrates through the threaded hole plates (6), a head die (8) is clamped between the plastic five-star handle bolts (7) at two sides, a transverse plate (10) is fixed at the top of the inner cavity of the inverted L-shaped support (2), a transverse plate (11) is fixed in the center of the bottom of the transverse plate (10), a magnetic force sleeve (12) is fixed below the outer wall of the electromagnet (11), a through hole (13) is welded at one side of the limiting column (13), and a through hole (13) is arranged at the front and back of the limiting column (13) and is coaxially inserted in the middle of the limiting column (13), the bottom right side of diaphragm (10) is fixed with just reversing buncher (16), the fixed winding up roller (17) that has twined wire rope that have cup jointed of motor shaft outer wall of just reversing buncher (16), wire rope's outer end is fixed with drag hook subassembly (18), the back mid-mounting of falling L type support (2) has holds cabinet (9), hold the inner chamber of cabinet (9) and install dynamometry display (19) with pressure sensor (4) signal connection.

2. The impact resistance detection device for the helmet as claimed in claim 1, wherein: and a grid plate positioned between the openable protective pipe (3) and the inverted L-shaped support (2) is fixed on the upper surface of the base (1).

3. An impact resistance detecting apparatus for helmet according to claim 2, wherein: a triangular rib plate is welded between the lower portion of the outer wall of the inverted L-shaped support (2) and the rear side of the upper surface of the base (1).

4. The impact resistance detection device for the helmet as claimed in claim 1, wherein: the inner walls of the two semicircular pipes of the openable protection pipe (3) are respectively convexly embedded and fixed with a roller chain plate.

5. The impact resistance detection device for the helmet as claimed in claim 4, wherein: a guide plate is obliquely fixed on the right side of the top of the rear semicircular pipe of the openable protection pipe (3).

6. An impact resistance detecting apparatus for helmet according to claim 1, wherein: draw hook subassembly (18) include the short hard plastic coupler body (180) in the long right side in left side, the left side of hard plastic coupler body (180) is provided with installation blind hole (181) near the internal surface of outer end, the vertical fixation has stretched out spring beam (182) in installation blind hole (181), the right side of hard plastic coupler body (180) has cup jointed U type piece (183) through the pivot rotation, the outer end of U type piece (183) is provided with spacing jack (184) that are used for connecting wire rope, the outer wall of U type piece (183) runs through the spiro union has the spacing bolt (185) that extend to spacing jack (184) inboard.