CN210533658U

CN210533658U - Impact resistance test machine of simple safety helmet

Info

Publication number: CN210533658U
Application number: CN201921901853.7U
Authority: CN
Inventors: 佟新日; 熊安平; 李平; 方福天
Original assignee: China Construction Civil Engineering Co Ltd
Current assignee: China Construction Civil Engineering Co Ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-05-15
Anticipated expiration: 2029-11-06

Abstract

A simple impact resistance testing machine for safety helmets comprises a base platform, a bracket and an impact rod; the bracket is connected to one side of the long edge of the base platform and comprises a vertical rod, an upper cross rod and a lower cross rod; an upper limiting rod is arranged in the middle of the upper cross rod; two upper limiting rods are arranged in parallel at intervals; an upper limiting block is connected between the two upper limiting rods; the middle part of the upper limiting block is provided with a first hole which penetrates through the impact rod; a lower limiting rod is arranged in the middle of the lower cross rod and at the position corresponding to the upper limiting rod; a lower limiting block is connected between the two lower limiting rods; the middle part of the lower limiting block is provided with a second hole which penetrates through the impact rod; the impact rod is vertically inserted into the first hole and the second hole; spacing holes are arranged on the impact rod at intervals; the inserted rod is inserted in the limiting hole, and the impact rod is temporarily fixed on the upper limiting rod or the lower limiting rod. The utility model provides a cost that the puncture test of shocking resistance of traditional safety helmet consumed expensive, be not convenient for job site use and time-wasting's technical problem.

Description

Impact resistance test machine of simple safety helmet

Technical Field

The utility model belongs to building engineering construction field especially relates to a simple and easy impact resistance test machine of safety helmet.

Background

The safety helmet as one head protecting article consists of one helmet shell, one helmet lining, one lower cheek belt and one back hoop. When the head of an operator is impacted by a falling object, the impact force is firstly decomposed to the whole area of the skull by utilizing the helmet shell and the helmet liner in an instant, then most of the impact force is absorbed by utilizing the elastic deformation, the plastic deformation and the allowable structural damage of the buffer structure of each part of the helmet, and the impact force finally applied to the head of the operator is reduced to be below 4900N, so that the head of the operator is protected. The shell material of the safety helmet plays an important role in the overall impact resistance of the safety helmet. However, some workers or even managers do not consider the protection function and the correct using method of the safety helmet, and even many managers purchase fake and fake safety helmets for the workers. The fake safety helmet is often unable to hit once in front of the impact force of falling from a high place and hitting by an object. Therefore, the impact performance of the safety helmet needs to be tested before the safety helmet is used, but the current impact puncture resistance testing machine for the safety helmet is high in manufacturing cost, inconvenient to use on a construction site and waste a large amount of time when the safety helmet is sent to a special detection mechanism for detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple and easy safety helmet's impact resistance test machine, the expense that the puncture test that shocks resistance that will solve traditional safety helmet consumed is expensive, the job site of being not convenient for use and the technical problem of waste time.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A shock resistance testing machine of a simple safety helmet comprises a base platform, a bracket and an impact rod; the base platform is fixed on the ground; the bracket is connected to one side of the long edge of the base platform and comprises an upright rod, an upper cross rod and a lower cross rod; the two upright posts are respectively arranged at the corners at the two ends of the long edge; the upper cross rod is connected between the tops of the two vertical rods; the lower cross bar is arranged below the upper cross bar; an upper limiting rod is arranged in the middle of the upper cross rod; the two upper limiting rods are arranged in parallel at intervals along the transverse direction; each upper limiting rod is longitudinally connected to the upper cross rod and is positioned right above the base platform; an upper limiting block is connected between the two upper limiting rods; the middle part of the upper limiting block is provided with a first hole penetrating through the impact rod; a lower limiting rod is arranged in the middle of the lower cross rod and at a position corresponding to the upper limiting rod; a lower limiting block is connected between the two lower limiting rods; the middle part of the lower limiting block is provided with a second hole which penetrates through the impact rod; the impact rod is vertically inserted into the first hole and the second hole; limiting holes are formed in the impact rod at intervals; the limiting hole is inserted with an inserting rod, and the impact rod is temporarily fixed on the upper limiting rod or the lower limiting rod through the inserting rod.

Preferably, the length of the base platform is 1000 mm-1500 mm, the width of the base platform is not less than 500 mm-800 mm, and the thickness of the base platform is not less than 40 mm.

Preferably, the height of the vertical rod is 1.2-1.8 m; the distance between the lower cross rod and the upper cross rod ranges from 250mm to 350 mm.

Preferably, the distance between the two upper limiting rods is 50-70 mm; the distance between the two lower limiting rods is 50 mm-70 mm.

Preferably, the length of the impact rod is not less than 1000 mm; the mass of the impact rod is 1 kg-3 kg.

Preferably, an inclined strut is arranged between the upright rod and the base platform.

Preferably, the base platform is provided with through holes at intervals, and the base platform is fixed on the ground through bolts penetrating through the through holes.

Compared with the prior art, the utility model has the following characteristics and beneficial effect.

1. The utility model discloses utilize old and useless shaped steel member and abandonment to climb a net piece and made simple and easy safety helmet test machine, carry out simple impact puncture test to the safety helmet, in the experimentation, only need extract the inserted bar, the impact bar falls by oneself promptly and carries out impact test to the safety helmet of below, and it is expensive to have solved traditional puncture test that shocks resistance and consume, is not convenient for job site use and waste time's technical problem.

2. The utility model is provided with an upper limit rod and a lower limit rod on the bracket, and is provided with an upper limit block at the end parts of the two upper limit rods and a lower limit block at the end parts of the two lower limit rods; the design of the structure limits the left-right and front-back movement of the impact rod, so that the impact rod can only move vertically to perform impact test on the safety helmet.

3. Utilize the utility model discloses to the safety helmet shape test that shocks resistance, guarantee the requirement for quality of job site safety helmet, guarantee construction worker's personal safety.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic plan view of the present invention.

Fig. 3 is a schematic side view of the present invention.

Fig. 4 is a schematic front structural view of the present invention.

Fig. 5 is the plan structure diagram of the middle and upper limiting block of the present invention.

Fig. 6 is a schematic view of a plane structure of the middle and lower limiting block of the present invention.

Reference numerals: 1-base platform, 2-bracket, 2.1-upright rod, 2.2-upper cross rod, 2.3-lower cross rod, 3-impact rod, 4-upper limit rod, 5-lower limit rod, 6-upper limit block, 7-limit hole, 8-diagonal brace, 9-inserted rod, 10-perforation, 11-bolt, 12-first hole, 13-lower limit block and 14-second hole.

Detailed Description

As shown in fig. 1-6, the impact resistance testing machine of the simple safety helmet comprises a base platform 1, a bracket 2 and an impact rod 3; the base platform 1 is fixed on the ground; the support 2 is connected to one side of the long side of the base platform 1 and comprises a vertical rod 2.1, an upper cross rod 2.2 and a lower cross rod 2.3; two upright posts 2.1 are arranged at the corners at the two ends of the long edge respectively; the upper cross rod 2.2 is connected between the tops of the two upright rods 2.1; the lower cross bar 2.3 is arranged below the upper cross bar 2.2; an upper limiting rod 4 is arranged in the middle of the upper cross rod 2.2; two upper limiting rods 4 are arranged in parallel at intervals along the transverse direction; each upper limiting rod 4 is longitudinally connected to the upper cross rod 2.2 and is positioned right above the base platform 1; an upper limiting block 6 is connected between the two upper limiting rods 4; a first hole 12 penetrating through the impact rod 3 is formed in the middle of the upper limiting block 6; a lower limiting rod 5 is arranged in the middle of the lower cross rod 2.3 and at the position corresponding to the upper limiting rod 4; a lower limiting block 13 is connected between the two lower limiting rods 5; a second hole 14 penetrating through the impact rod 3 is formed in the middle of the lower limiting block 13; the impact rod 3 is vertically inserted into the first hole 12 and the second hole 14; the impact rod 3 is provided with limit holes 7 at intervals; inserted bar 9 is inserted in limiting hole 7, and inserted bar 9 fixes impact rod 3 on last spacing pole 4 or lower spacing pole 5 temporarily.

In this embodiment, the length of base platform 1 is 1000mm ~1500mm, and the width of base platform 1 is for being not less than 500mm ~800mm, and the thickness of base platform 1 is not less than 40 mm.

In this embodiment, the base platform 1 includes a rectangular frame, a top panel and a bottom panel; the rectangular frame is formed by welding section steel rod pieces end to end; the top panel and the bottom panel are both made of steel plate meshes and are respectively welded at the top and the bottom of the rectangular frame.

In the embodiment, the height of the upright rod 2.1 is 1.2-1.8 m; the distance between the lower cross rod 2.3 and the upper cross rod 2.2 is 250 mm-350 mm.

In this embodiment, the bracket 2 is formed by welding steel bar members.

In the embodiment, the distance between the two upper limiting rods 4 is 50 mm-70 mm; the distance between the two lower limiting rods 5 is 50 mm-70 mm.

In this embodiment, the length of the impact rod 3 is not less than 1000 mm; the mass of the impact rod 3 is 1 kg-3 kg.

In this embodiment, an inclined strut 8 is arranged between the upright rod 2.1 and the base platform 1.

In this embodiment, the base platform 1 is provided with through holes 10 at intervals, and the base platform 1 is fixed on the ground through bolts 11 penetrating through the through holes 10.

In this embodiment, the upper limiting block 6 is connected between the front ends of the two upper limiting rods 4; the lower limit block 13 is connected between the front ends of the two lower limit rods 5.

In this embodiment, the outer end of the insert rod 9 exceeds the outer side of the limiting hole 7, and a pull rope is connected to the outer end of the insert rod 9; when the test is performed, the insertion rod 9 is pulled out by the pull rope, so that the impact rod 3 falls down to perform the impact test on the helmet.

The above embodiments are not exhaustive of the specific embodiments, and other embodiments are possible, and the above embodiments are intended to illustrate, but not limit the scope of the present invention, and all applications coming from the simple changes of the present invention fall within the scope of the present invention.

Claims

1. A simple impact resistance testing machine for safety helmets comprises a base platform (1), a bracket (2) and an impact rod (3); the method is characterized in that: the base platform (1) is fixed on the ground; the support (2) is connected to one side of the long side of the base platform (1) and comprises a vertical rod (2.1), an upper cross rod (2.2) and a lower cross rod (2.3); two upright posts (2.1) are respectively arranged at the corners of two ends of the long edge; the upper cross rod (2.2) is connected between the tops of the two upright rods (2.1); the lower cross bar (2.3) is arranged below the upper cross bar (2.2); an upper limiting rod (4) is arranged in the middle of the upper cross rod (2.2); the two upper limiting rods (4) are arranged in parallel at intervals along the transverse direction; each upper limiting rod (4) is longitudinally connected to the upper cross rod (2.2) and is positioned right above the base platform (1); an upper limiting block (6) is connected between the two upper limiting rods (4); a first hole (12) penetrating through the impact rod (3) is formed in the middle of the upper limiting block (6); a lower limiting rod (5) is arranged in the middle of the lower cross rod (2.3) and at the position corresponding to the upper limiting rod (4); a lower limiting block (13) is connected between the two lower limiting rods (5); a second hole (14) penetrating through the impact rod (3) is formed in the middle of the lower limiting block (13); the impact rod (3) is vertically inserted into the first hole (12) and the second hole (14); limiting holes (7) are arranged on the impact rod (3) at intervals; inserted bar (9) are inserted into the limiting holes (7), and impact bars (3) are temporarily fixed on the upper limiting rods (4) or the lower limiting rods (5) through the inserted bars (9).

2. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: the length of base platform (1) is 1000mm ~1500mm, and the width of base platform (1) is for not being less than 500mm ~800mm, and the thickness of base platform (1) is not less than 40 mm.

3. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: the height of the upright rod (2.1) is 1.2-1.8 m; the distance between the lower cross rod (2.3) and the upper cross rod (2.2) is 250 mm-350 mm.

4. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: the distance between the two upper limiting rods (4) is 50-70 mm; the distance between the two lower limiting rods (5) is 50-70 mm.

5. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: the length of the impact rod (3) is not less than 1000 mm; the mass of the impact rod (3) is 1 kg-3 kg.

6. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: an inclined strut (8) is arranged between the upright rod (2.1) and the base platform (1).

7. The impact resistance testing machine for the crash helmet as set forth in claim 1, wherein: the base platform (1) is provided with through holes (10) at intervals, and the base platform (1) is fixed on the ground through bolts (11) penetrating through the through holes (10).