CN201579769U

CN201579769U - Air pick with integrated precision casting type inner cylinder body and screw type muffling cover

Info

Publication number: CN201579769U
Application number: CN2010200103414U
Authority: CN
Inventors: 李华宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-17
Filing date: 2010-01-17
Publication date: 2010-09-15
Anticipated expiration: 2020-01-17

Abstract

The utility model relates to an air pick with an integrated precision casting type inner cylinder body and a screw type muffling cover, wherein a cylinder body comprises an inner cylinder body and an outer cylinder body, the inner cylinder body is an integrated precision casting, in which a plurality of straight line air ways are arranged, the outer cylinder body is a seamless cylinder tube, and the two are precisely assembled in transition. A muffling cover is a double-layer inverted ventilation twice turnback screw type structure, and the inner wall of a muffling cover liner is provided with a screw type reinforcing rib. The liner and the muffling cover are orderly sleeved on the outer cylinder body, and a contact position of a handle and a connecting sleeve is provided with a steel sleeve. The air pick has the advantages of reasonable structure, high precision, high mechanical strength, low noise, and comfortable holding of the handle. Compared with an existing air pick, the air pick has low product cost and long service life.

Description

Inner cylinder body is that whole precision casting silencer cover is screw type pneumatic pick

Technical field

The utility model relates to pneumatic pick, and particularly inner cylinder body is design and the manufacturing technology field that whole precision casting silencer cover is screw type pneumatic pick.

Background technology

It is a lot of to make the pneumatic pick kind model of using at present both at home and abroad, and structure is not quite similar, and product is constantly progressive, but there is following shortcoming in great majority: the one, and cylinder body is made up of inner cylinder body, outer cylinder body and lower cylinder body.Wherein cylinder body is processed with a material all in one piece, will require to bore the deep hole of 100-140mm in it according to the different model pneumatic pick, the task difficulty height, and labour intensity is big.Inferior part of the cylinder block will be placed spacer, spacer must be packed into the hot pressing mode that expands outward, therefore can't reach the hardness requirement; Inner cylinder body is connected with screw thread or welding manner with lower cylinder body, and the long-time vibration gas leakage that easily comes off causes the shortening in service life of whole cylinder body.The 2nd, adopt the straight line exhaust or protect the silencer cover of outer exhaust with plastic casing, erasure effect is bad, and noise is more than 90 decibels.The 3rd, vibration force is very strong during the pneumatic pick operation, and handle and adapter sleeve contact site very easily wear and tear, and influences whole pneumatic pick service life.

Summary of the invention

The purpose of this utility model is that it is that whole precision casting silencer cover is screw type pneumatic pick that a kind of inner cylinder body is provided.

The utility model is achieved by the following technical solution.

The utility model carries out key improvement at the shortcoming that exists on the existing pneumatic pick structure:

1. inner cylinder body is a whole precision casting, and it has the precision casting of many linear air flues in being, inner cylinder body comprises lower cylinder body.Outer cylinder body is processed by seamless steel pipe.Inside and outside cylinder body precise transition assembling.This cylinder body is applicable to various model pneumatic picks.This pneumatic pick machining accuracy height, mechanical strength height, long service life.

2. silencer cover adopts the double-deck inverted ventilation structure of turning back for twice.Silencer cover is a vulcanie, and the silencer cover liner is that engineering plastics, its inwall have spiral reinforcing rod, and the inwall of silencer cover liner and the spiral reinforcing rod on it constitute the double-deck inverted ventilation spiral air discharge structure that turns back for twice.The pneumatic pick noise can be reduced to the 60-70 decibel.

3. handle and adapter sleeve contact site add steel bushing, and the friction of handle and adapter sleeve contact site seriously adds a steel bushing for this reason when using pneumatic pick between handle inside and adapter sleeve contact site, and extended its service life.

The utility model has the advantages that, simple in structure, precision height, mechanical strength height; Noise is low; Between handle and the adapter sleeve steel bushing is arranged, long service life.With existing pneumatic pick ratio, cost can save 1/3rd.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1: the utility model is analysed and observe the back structural representation.

Fig. 2: A-A cutaway view among Fig. 1.

Fig. 3: inner cylinder body front view.

Fig. 4: B-B cutaway view among Fig. 3.

Fig. 5: handle cutaway view.

Fig. 6: silencer cover cutaway view.

The specific embodiment

The utility model is assembled by following parts:

The 1-handle, 2-spring, 3-ventilation valve, 4-adapter sleeve, 5-ring set, 6-adapter sleeve cushion block, 7-disc spring, the spherical valve of 8-, 9-silencer cover, 10-silencer cover liner, the 11-inner cylinder body, 12-outer cylinder body, 13-drill sleeve, 14-end spring, 15-shock absorbing ring, the 16-bore bit, the 17-pin, 18-body spacer, 19-impacts head, 20-alignment pin, stop ring in the 21-, 22-cover cap, 23-valve case, 24-wing nut, the 25-coupling, 26-pipe joint, 27-back-up ring, 28-steel bushing.

As Fig. 1, Fig. 3, shown in Figure 4, inner cylinder body 11 is the whole precision castings with many linear air flues, and outer cylinder body 12 is to be processed by seamless steel pipe.Inner cylinder body 11 and the assembling of outer cylinder body 12 precise transition.

As shown in Figure 6, the silencer cover liner 10 that interior table has spiral reinforcing rod is sleeved on the outer cylinder body 12 successively with silencer cover 9, is connected with handle 1 on the silencer cover 9.

As shown in Figure 5, the contact site has steel bushing 28 between handle 1 and the adapter sleeve 4.

Claims

1. inner cylinder body is that whole precision casting silencer cover is screw type pneumatic pick, mainly by handle, adapter sleeve, the damping device of bottom, bore bit, the gas-tpe fitting device on end spring and pneumatic pick top is formed, the resistance of valve valve is housed in the adapter sleeve, the impact head is housed in the cylinder body, cylinder body is equipped with silencer cover outward, it is characterized in that inner cylinder body (11) is the whole precision casting of one group of linear air flue of an interior tool, outer cylinder body (12) is a seamless steel pipe, inner cylinder body (11) and the assembling of outer cylinder body (12) precise transition

Silencer cover is the double-deck inverted ventilation sped structure that turns back for twice, engineering plastics silencer cover liner (10) inwall has the spirality reinforcement, silencer cover liner (10) is contained in outer cylinder body (12) outside, hardness rubber silencer cover (9) is contained in silencer cover liner (10) outside, silencer cover (9) top is connected with handle (1)

Handle (1) inwall and adapter sleeve (4) contact site are provided with steel bushing (28).