CN2079557U

CN2079557U - Damping handle

Info

Publication number: CN2079557U
Application number: CN 90222623
Authority: CN
Inventors: 张延明
Original assignee: INST OF SAFETY PROTECTION OF ENVIRONMENT MINISTRY OF METALLURGY
Current assignee: INST OF SAFETY PROTECTION OF ENVIRONMENT MINISTRY OF METALLURGY
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1991-06-26

Abstract

The utility model relates to a shock absorption handle for hand-held vibration tools, which is characterized in that the shock absorption handle comprises a section of hollow metal pipe or a high-intensity rigid non-metal pipe. A connection rod which is connected with a shock source body, shock absorption materials, a shock isolation compression spring and a shock absorption extension spring are arranged in the pipe. The shock absorption handle is connected with the shock source body through the screw threads which are on the connection rod; the two ends of the shock absorption handle are sealed by an end cap; the protective sleeve of the shock absorption handle is made of viscoelastic materials, and the surface of the protective sleeve has raised grains or bulge nipples; the shock absorption handle can be disassembled, and the parts of the shock absorption handle can be replaced. The shock absorption effect is obvious when the shock absorption handle is used, and the shock absorption handle is helpful to prevent the occupational shock sickness and can prolong the workers' implement holding operation time so that the labor productivity can be raised.

Description

Damping handle

The utility model belongs to vibrations machinery, particularly a kind of damping handle of hand-held vibrations instrument.

Various countries all have taken some precautions to the harm that human body brings to vibrations when research and design vibrations instrument, except whole damping and individual protection, use local damping handle comprising design.The handle of the instrument of hand-held vibrations both at home and abroad mostly is rigid structure at present, becomes one with focal body, and what have adheres to the sheath of a vibration-absorptive material system at the handle outer surface, to realize local damping.For example, China YT series hand-held drifter, FDAC VFQ-2.10 hand electric abrasive machine, the VFE20X hand-held disintegrating machines of the interior mounted engine that Japan-US cooperation is made etc. all are this band sheath rigid handles.Its weak point is that damping effect is poor, and because of handle and focal body directly link, arm is directly accepted vibrations by handle, and the workman can not grip for a long time, and is helpless to alleviate and even eliminates the damaging effect of vibrations to human body, and handle can not be dismantled, change.

The utility model purpose is the damping defective at the handle for tool of hand-held vibrations now, improve handle arrangement, improve damping effect, make vibrations be relieved to minimum level the harm of human body, thereby prolong the operating time that the workman grips the vibrations instrument, improve the equipment work efficiency.

The damping handle of hand-held vibrations instrument described in the utility model, constitute by handle and sheath, this handle comprises one section hollow tube handle (7), and this pipe can be connecting rod (1), vibration-absorptive material layer (5), shock insulation compression spring (6) and the damping extension spring (8), the handle two ends that connect focal body to be housed in metal tube or high-intensity rigidity non-metallic pipe, the pipe sealed by end cap (4), (10).Connecting rod (1) and damping extension spring (8) are carried out hook and are connected, and there is nut (2) the connecting rod end, by rotating the elasticity that nut can regulating spring.The vibration-absorptive material layer is made by the viscoelastic material compression molding, and its surface band ripple or nipple are outstanding, to increase elasticity, use adhesive bond during assembling.

When damping handle described in the utility model was used for air rock drill, the feel vibrations greatly alleviated than former handle, were subjected to the operator and welcome.On the rock drilling testing stand, carry out damping test,, show that the single order vibration frequency reduces by 18% with SC16 light oscillograph record shocking waveshape.Acceleration amplitude reduces 68～78%, and hand steered power is 6 kilograms, and damping effect is remarkable.Use the utility model damping handle, can obviously improve the subjective sensation of workman to vibrations, prevention occupational commotio can prolong the operating time that grips the vibrations instrument simultaneously, improves the equipment work efficiency.This damping handle is simple in structure, and is easy for installation, and can dismantle, change, thus the service life of prolongation facility.

Accompanying drawing 1 is the damping handle that single head connects focal body, (1) is connecting rod among the figure, and (2) are nuts, and (3) are packing rings, (4) be drive end bearing bracket, (5) be the vibration-absorptive material layer, (6) are shock insulation compression springs, and (7) are the hollow tube handles, (8) be the damping extension spring, (9) be the spring abutment mass, (10) are rear end caps, and (11) are the handle sheaths.

Accompanying drawing 2 is damping handles that double end connects focal body, and the title of (1), (2), (5), (6), (7), (8), (11) is identical with Fig. 1 among the figure.

Below in conjunction with accompanying drawing embodiment is described in detail.

Embodiment 1, and as seen 1 be the damping handle that a kind of single head connects focal body in conjunction with the accompanying drawings, and handle (7) is one section metal tube or high strength rigidity non-metallic pipe.Drive end bearing bracket (4) and rear end cap (10) are equipped with in the pipe handle two ends, with handle by being threaded.The interior filling vibration-absorptive material of drive end bearing bracket (4) (5) can be the viscoelastic material of rubber and so on.The centre bit of hollow tube handle (7) is equipped with connecting rod (1), an end cutting thread of this connecting rod, and stretch out drive end bearing bracket (4) and focal body and carry out and be threaded, the length of thread segment is decided according to actual needs, is generally 30～50 millimeters.With being connected of nut (2) and packing ring (3) fixed connecting rod (1) and focal body, and the tightness of adjustable springs (8).Shock insulation compression spring (6) is enclosed within on the connecting rod (1).Damping extension spring (8) is carried out hook with connecting rod (1) and is connected, and the one end is fixed on the terminal boss hole intraocular of connecting rod (1), and the other end is hooked on the spring abutment mass (9).Hollow tube handle (7) outside is surrounded by handle sheath (11), and it should have suitable thickness and elasticity, can use the compression molding of plastics material, and anti-skidding ripple or nipple projection can be with in its surface.

Embodiment 2, and as seen 2 be the damping handle that a kind of double end connects focal body in conjunction with the accompanying drawings.The handle two ends respectively have a connecting rod (1) to connect focal body, without end cap, and directly compress vibration-absorptive material (5) by nut (2), and the inner surface of hollow tube handle (7) has the boss of supporting vibration-absorptive material (5).The connected mode of damping extension spring (8) and shock insulation compression spring (6), and handle sheath (11), all the damping handle with the connection of single head shown in the accompanying drawing 1 focal body is identical.

Claims

1, a kind of damping handle of hand-held vibrations instrument, constitute by handle and sheath, it is characterized in that this handle comprises one section hollow tube, the connecting rod, vibration-absorptive material layer, shock insulation compression spring and the damping extension spring that connect focal body are housed in the pipe, the handle two ends are by end cap seal.

2, handle according to claim 1 is characterized in that described connecting rod and damping extension spring implementation hook is connected, and there is nut the connecting rod end, by rotating the elasticity that nut comes regulating spring.

3, handle according to claim 1 is characterized in that described vibration-absorptive material layer made by the viscoelastic material compression molding, its surface band ripple or nipple projection.