CN2693874Y

CN2693874Y - Concrete vibrating spear silencer

Info

Publication number: CN2693874Y
Application number: CN 200420048288
Authority: CN
Inventors: 刘倩; 刘秉衡
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-20
Filing date: 2004-04-20
Publication date: 2005-04-20
Anticipated expiration: 2014-04-20

Abstract

The utility model discloses a silencer. The purpose is to provide a concrete vibrating spear silencer with simple structure and obvious effect. The concrete vibrating spear silencer comprises a sleeve barrel, a sound absorption layer, a support ring, a barrier ring and a sealing ring. The sleeve barrel is a flexible soft barrel. The internal wall lining of the sleeve barrel is provided with the sound absorption layer. The sound absorption layer id connected with the support ring. The frond end of the sleeve barrel is connected with the barrier ring, and the tail end is connected with the sealing ring. The utility model is suitable for molding the concrete at construction sites.

Description

A kind of concrete vibration bar noise damper

Technical field

The utility model relates to a kind of noise damper, specifically, relates to a kind of plug-in type concrete vibration bar noise damper.

Background technology

The plug-in type concrete vibration bar of prior art, the noise that is produced in the work progress is bigger at the scene, is a kind of serious noise pollution source, has not only endangered people's physical and mental health, and has reduced the production efficiency of construction, has influenced economic benefit of enterprises.

Summary of the invention

The purpose of this utility model is to overcome defective of the prior art, and a kind of noise damper that can reduce noise is provided.

For realizing described purpose, take following technical proposals: the utility model comprises sleeve, sound absorbing layer, support ring, stops circle and sealing ring, described sleeve is flexible flexible sleeve, its inwall is lined with sound absorbing layer, one or more support ring in described sound absorbing layer and the sleeve cavity is connected, and the head of described sleeve is connected with stopping to enclose, and afterbody is connected with sealing ring, vibrating head and flexible axle can pass support ring, slidably reciprocate in the cavity of sleeve.

The endoporus of described support ring radially has one or more groove; Stop the external diameter of the external diameter of circle more than or equal to sleeve, internal diameter is more than or equal to the external diameter of vibrating head; The internal diameter of sealing ring is more than or equal to the external diameter of flexible axle.

The beneficial effects of the utility model are: (1) is simple in structure; (2) effect is obvious.

Description of drawings

Fig. 1 is a sectional view of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1.

Among the figure: sleeve 1 sound absorbing layer 2 support rings 3 stop circle 4 sealing rings 5

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

Sleeve 1 is flexible flexible sleeve, is lined with sound absorbing layer 2 on the inwall, and sound absorbing layer 2 is connected with one or more support ring 3, and the head of sleeve 14 is connected with stopping circle, the afterbody of sleeve 1 and sealing ring 5 be connected.For the concrete bits that adhere on the shell that prevents vibrating head accumulate in sleeve 1, solidify, on the endoporus of support ring 3, radially have one or more groove, be convenient to the discharge of concrete bits.Stop the external diameter of circle 4 internal diameter more than or equal to vibrating head, can make vibrating head can be therefrom sliding extension smoothly, stop the external diameter of the external diameter of circle 4 more than or equal to sleeve 1, help to prevent that sleeve 1 from stretching with vibrating head slotting and enter in the layer of concrete.The internal diameter of sealing ring 5 is convenient to flexible axle and is slided in the cavity of sleeve 1, stretches more than or equal to the external diameter of flexible axle.

When not inserting cast-in-place layer of concrete as yet after vibrating head starts, because vibrating head is in sleeve 1 and the sealing ring 5 formed cavitys, the noise that vibrating head produced will be absorbed by the sound absorbing layer 2 in the sleeve 1, and the noise intensity that passes to the external world is greatly reduced.

When vibrating head need insert when vibrating in the layer of concrete, can will stop that circle 4 contacts with cast-in-place concrete surface, stop that circle 4 will stop sleeve 1 to stretch with vibrating head slotting and enter in the layer of concrete, guarantee that sleeve 1 can be in outside the surface of layer of concrete all the time, and vibrating head and flexible axle can slide to stretch out from sleeve 1 and insert in the layer of concrete, vibrate in the predetermined degree of depth.At this moment, stop that circle 4, sleeve 1 and sealing ring 5 form a sound-absorbing cavity, vibrating head is fully absorbed at the outside noise that produces of layer of concrete, and vibrating head will be absorbed at the inner noise that produces of layer of concrete by cast-in-place concrete.Because sleeve 1 is flexible flexible sleeve, is convenient to be used with flexible axle.

Claims

1, a kind of concrete vibration bar noise damper, comprise sleeve (1), sound absorbing layer (2), support ring (3), stop circle (4) and sealing ring (5), it is characterized in that, described sleeve (1) is flexible flexible sleeve, its inwall is lined with sound absorbing layer (2), described sound absorbing layer (2) is connected with one or more support ring (3) in sleeve (1) cavity, the head of described sleeve (1) is connected with stopping circle (4), the afterbody of described sleeve (1) is connected with sealing ring (5), and vibrating head and flexible axle can pass support ring (3) and slidably reciprocate flexible in the cavity of sleeve (1).

2, noise damper according to claim 1 is characterized in that, on the endoporus of described support ring (3), radially has one or more groove.

3, noise damper according to claim 1 is characterized in that, the described external diameter that stops the external diameter of circle (4) more than or equal to sleeve (1), and internal diameter is more than or equal to the external diameter of vibrating head.

4, noise damper according to claim 1 is characterized in that, the internal diameter of described sealing ring (5) is more than or equal to the external diameter of flexible axle.