Pressure-bearing performance detection device for fire fighting helmet

Abstract

The utility model relates to the technical field of fire-fighting helmet detection devices, in particular to a fire-fighting helmet pressure-bearing performance detection device, which comprises a box body and a fire-fighting helmet, two groups of fixed limiting plates are fixed on the surface of the box body, the two groups of fixed limiting plates are arranged on the inner side of the fire-fighting helmet, two groups of movable limiting plates are connected on the surface of the box body in a sliding manner, and the two groups of movable limiting plates are arranged on the inner side of the fire-fighting helmet. The two groups of moving limiters are arranged on the outer side of the fire fighting helmet; the device has the beneficial effects that the springs generate thrust on the sliding blocks under the elastic action of the springs, so that the two sets of movable limiting parts are pressed on the two symmetrical end faces of the fire fighting helmet correspondingly, the two ends of the fire fighting helmet are clamped between the two sets of fixed limiting plates and the movable limiting parts, and therefore the fire fighting helmet is positioned in the middle of the bottom end of the box body; and meanwhile, the positions of the fixed limiting plate and the movable limiting plate avoid electric telescopic rods arranged on two symmetrical inner side walls of the box body in the prior art, so that the influence of the fixed limiting plate and the movable limiting plate for positioning on the extrusion test of the helmet is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire helmet's detection device technical field, concretely is a kind of fire helmet's pressure-bearing performance detection device. BACKGROUND

[0002] Fire helmet's pressure-bearing performance detection device is the key equipment to ensure that fire helmet can withstand certain pressure in emergency rescue operation, protect the safety of fireman's head.

[0003] In prior art, the patent document with application number CN202121586799.9 disclosed by China National Intellectual Property Office is disclosed in a kind of fire helmet pressure-bearing performance detection device, including box, box bottom is fixedly arranged with base, control valve group is suitably arranged outside base, head mould is fixedly arranged in the inside lower portion of box, electric telescopic rod is fixedly arranged in the inside both sides of box, extrusion block is suitably arranged in the inside of electric telescopic rod, screw slide rail is embedded in the both sides of box, first slider and second slider are nested and arranged outside screw slide rail.The utility model is symmetrical by both sides electric telescopic rod, and electric telescopic rod can be extended to head mould, fire helmet can be extruded and tested by electric telescopic rod driving extrusion block to extend to head mould, extrusion force is the force 800N that fire helmet test needs to withstand, if extrusion is completed, fire helmet is not deformed, it is qualified, solve the problem that cannot be extruded and tested.

[0004] However, positioning of fire helmet in prior art is simply completed by head mould, which cannot provide good positioning for fire helmet, and head mould provides support for fire helmet when extruding fire helmet, so that the real pressure-bearing performance of fire helmet cannot be tested. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of fire helmet's pressure-bearing performance detection device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of fire helmet's pressure-bearing performance detection device, comprising: box and fire helmet, the surface of the box is fixed with two groups of fixed limit plates, two groups of fixed limit plates are arranged in the inside of fire helmet, the surface of the box is slidably connected with two groups of mobile limit, two groups of mobile limit are arranged in the outside of fire helmet.

[0007] Preferably, the fixed limit plate and the mobile limit are both arc-shaped plate body structures, and the two groups of fixed limit plates and the two groups of mobile limit are symmetrically distributed about the fire helmet.

[0008] Preferably, two groups of slide rails are formed on the surface of the box, and the two groups of slide rails are symmetrically distributed about the fire helmet.

[0009] Preferably, the slide rail is in a rectangular groove structure, a sliding block is slidingly connected in the slide rail, the sliding block is in a rectangular block structure, and the top end of the sliding block is fixed at the bottom end of the moving limiting.

[0010] Preferably, a spring is fixed on the surface of the sliding block, and the other end of the spring is fixed on the inner wall of the groove of the slide rail.

[0011] Preferably, the end of the two groups of fixed limiting plates away from each other is fixed with a first gasket, and the end of the two groups of moving limiting plates close to each other is fixed with a second gasket.

[0012] Preferably, the top end of the moving limiting is fixed with a knob slot, and the knob slot is in a rectangular groove structure.

[0013] Compared with the prior art, the fire helmet pressure-bearing performance detection device has the advantages that:

[0014] The fire helmet pressure-bearing performance detection device provided by the utility model first pulls the two groups of moving limitings away from each other, the moving limitings drive the sliding blocks to slide in the slide rails, the movement of the sliding blocks causes the springs to be compressed, then the two ends of the fire helmet are placed between the two groups of fixed limitings and the moving limitings, then the moving limitings are slowly released, the springs generate a thrust on the sliding blocks under the elastic action of the springs, so that the two groups of moving limitings are pressed on the two symmetrical end faces of the fire helmet respectively, the two ends of the fire helmet are clamped between the two groups of fixed limitings and the moving limitings, so that the fire helmet is positioned in the middle of the bottom end of the box body, and the positions of the fixed limitings and the moving limitings avoid the electric telescopic rods arranged on the two symmetrical inner side walls of the box body in the prior art, so that the extrusion test of the fixed limitings and the moving limitings on the helmet is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a sectional structural schematic view of the utility model;

[0017] Figure 3 It is Figure 2 It is an enlarged schematic view of the structure at A in the middle.

[0018] In the drawing: the box body 1, the fire helmet 2, the fixed limiting plate 3, the moving limiting plate 4, the slide rail 5, the sliding block 6, the spring 7, the knob slot 8, the first gasket 9, and the second gasket 10. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries on further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiments, only to explain the embodiment of the utility model, and not for the limitation of the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0020] Embodiment one: please refer to Figures 1 to 3 The utility model provides a kind of technical scheme: a fire helmet pressure-bearing performance detection device, comprising: box 1 and fire helmet 2, the surface of the box 1 is fixed with two groups of fixed limit plate 3, two groups of fixed limit plate 3 are arranged in the inner side of fire helmet 2, the surface of the box 1 is slidably connected with two groups of mobile limit 4, two groups of mobile limit 4 are arranged in the outer side of fire helmet 2, fixed limit plate 3 and mobile limit 4 are all arc plate body structure, two groups of fixed limit plate 3 and two groups of mobile limit 4 are about fire helmet 2 symmetrical distribution, the surface of the box 1 is equipped with two groups of slide rail 5, two groups of slide rail 5 are about fire helmet 2 symmetrical distribution, slide rail 5 is rectangular groove body structure, slide rail 5 is slidably connected with sliding block 6, sliding block 6 is rectangular block structure, the top of sliding block 6 is fixed in the bottom of mobile limit 4, the surface of sliding block 6 is fixed with spring 7, the other end of spring 7 is fixed in the groove body inner wall of slide rail 5.

[0021] Actual use, first two groups of mobile limit 4 are pulled to the direction of mutual far away, mobile limit 4 drives sliding block 6 to slide in slide rail 5, the movement of sliding block 6 leads to spring 7 being compressed, then the two ends of fire helmet 2 are placed between two groups of fixed limit plate 3 and mobile limit 4, then slowly release mobile limit 4, spring 7 generates thrust to sliding block 6 under the self elasticity, so that two groups of mobile limit 4 are respectively pressed on the two end faces of symmetrical fire helmet 2, the two ends of fire helmet 2 are clamped in two groups of fixed limit plate 3 and mobile limit 4, so as to position fire helmet 2 in the middle of the bottom of box 1, the position of fixed limit plate 3 and mobile limit 4 avoids the electric telescopic rod arranged on the two symmetrical inner side walls of box 1 in the prior art, avoids the influence of the extrusion test of fixed limit plate 3 and mobile limit 4 used for positioning on helmet.

[0022] Embodiment two: on the basis of embodiment one, in order to realize the positioning effect of two groups of fixed limit plate 3 and mobile limit 4 to fire helmet 2, the end of two groups of fixed limit plate 3 away from each other is fixed with first gasket 9, the end of two groups of mobile limit 4 close to each other is fixed with second gasket 10.

[0023] The surface of the fixed limiting plate 3 is fixed with a first gasket 9, and the surface of the movable limiting plate 4 is fixed with a second gasket 10. When the fire helmet 2 is clamped between the fixed limiting plate 3 and the movable limiting plate 4, the first gasket 9 and the second gasket 10 are in contact with the fire helmet 2. Both the first gasket 9 and the second gasket 10 are made of soft and elastic rubber material, so that the friction between the first gasket 9, the second gasket 10 and the fire helmet 2 is large. The large friction makes the positioning effect of the fixed limiting plate 3 and the movable limiting plate 4 on the fire helmet 2 better.

[0024] In example three, based on example two, in order to conveniently pull the movable limiting plate 4, a notch slot 8 is fixed at the top end of the movable limiting plate 4. The notch slot 8 is in a rectangular slot structure.

[0025] The surface of the movable limiting plate 4 is relatively smooth, so the notch slot 8 is arranged at the top end of the movable limiting plate 4. When the movable limiting plate 4 needs to be pulled, the finger is buckled into the notch slot 8 to pull, so that the movable limiting plate 4 can be more conveniently pulled.

[0026] In actual use, first, two groups of movable limiting plates 4 are pulled away from each other. The movable limiting plate 4 drives the sliding block 6 to slide in the sliding rail 5. The movement of the sliding block 6 causes the spring 7 to be compressed. Then, the two ends of the fire helmet 2 are placed between the two groups of fixed limiting plates 3 and movable limiting plates 4. Then, the movable limiting plate 4 is slowly released. The spring 7 generates a pushing force on the sliding block 6 under the elastic action of itself, so that the two groups of movable limiting plates 4 are respectively pressed on the two symmetrical end faces of the fire helmet 2. The two ends of the fire helmet 2 are clamped between the two groups of fixed limiting plates 3 and movable limiting plates 4, so as to position the fire helmet 2 in the middle of the bottom end of the box body 1. At the same time, the positions of the fixed limiting plate 3 and the movable limiting plate 4 avoid the electric telescopic rod arranged on the two symmetrical inner side walls of the box body 1 in the prior art, so as to avoid the influence of the extrusion test of the helmet by the fixed limiting plate 3 and the movable limiting plate 4 used for positioning. The surface of the fixed limiting plate 3 is fixed with a first gasket 9, and the surface of the movable limiting plate 4 is fixed with a second gasket 10. When the fire helmet 2 is clamped between the fixed limiting plate 3 and the movable limiting plate 4, the first gasket 9 and the second gasket 10 are in contact with the fire helmet 2. Both the first gasket 9 and the second gasket 10 are made of soft and elastic rubber material, so that the friction between the first gasket 9, the second gasket 10 and the fire helmet 2 is large. The large friction makes the positioning effect of the fixed limiting plate 3 and the movable limiting plate 4 on the fire helmet 2 better. The surface of the movable limiting plate 4 is relatively smooth, so the notch slot 8 is arranged at the top end of the movable limiting plate 4. When the movable limiting plate 4 needs to be pulled, the finger is buckled into the notch slot 8 to pull, so that the movable limiting plate 4 can be more conveniently pulled.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the pressure resistance performance of a fire helmet, comprising: The utility model relates to a box (1) and fire helmet (2), its characterized in be: the surface of box (1) is fixed with two groups of fixed limiting plate (3), two groups of fixed limiting plate (3) are set in the inner side of fire helmet (2), and the surface of box (1) is slidably connected with two groups of mobile limiting (4), and two groups of mobile limiting (4) are set in the outer side of fire helmet (2).

2. The pressure resistance performance detection device of a fire helmet according to claim 1, characterized in that: The fixed limiting plate (3) and mobile limiting (4) are both arc plate body structure, and two groups of fixed limiting plate (3) and two groups of mobile limiting (4) are symmetrically distributed about fire helmet (2).

3. The pressure resistance performance detection device of a fire helmet according to claim 2, characterized in that: The surface of box (1) is provided with two groups of slide rails (5), and two groups of slide rails (5) are symmetrically distributed about fire helmet (2).

4. The pressure resistance performance detection device of a fire helmet according to claim 3, characterized in that: The slide rail (5) is rectangular groove body structure, and the slide rail (5) is slidably connected with a sliding block (6), the sliding block (6) is rectangular block structure, and the top of sliding block (6) is fixed on the bottom of mobile limiting (4).

5. The device for detecting the pressure resistance performance of a fire helmet according to claim 4, characterized in that: The surface of sliding block (6) is fixed with spring (7), and the other end of spring (7) is fixed on the groove inner wall of slide rail (5).

6. The pressure resistance performance detection device of a fire helmet according to claim 1, characterized in that: Two groups of fixed limiting plate (3) are fixed with first gasket (9) on the end away from each other, and two groups of mobile limiting (4) are fixed with second gasket (10) on the end close to each other.

7. The pressure resistance performance detection device of a fire helmet according to claim 1, characterized in that: The top of mobile limiting (4) is fixed with a handle slot (8), and the handle slot (8) is rectangular groove body structure.

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