CN201546723U

CN201546723U - Improved structure of sleeve

Info

Publication number: CN201546723U
Application number: CN2009202489290U
Authority: CN
Inventors: 王大伟; 陈志超; 张伟强; 张金库; 曲晓明; 宋利锋
Original assignee: Sany Heavy Equipment Co Ltd
Current assignee: Sany Heavy Equipment Co Ltd
Priority date: 2009-11-27
Filing date: 2009-11-27
Publication date: 2010-08-11
Anticipated expiration: 2019-11-27

Abstract

The utility model relates to the field of excavating machinery, in particular to an improved structure of a sleeve in a telescopic outer tube for a coal mine tunnel tunneling machine, which solves the problems in the prior art that surfacing copper has extremely high coarseness after being processed, and is easy to fall off when welding a surfaced portion. The improved structure comprises a sleeve and a surfacing layer, wherein the inner surface of the sleeve is provided with a chute, and an anti-corrosion layer is welded on the inner surface of the sleeve. A circle of chute is processed on the inner surface of the sleeve, the adhering force of the surfacing layer is improved, a MIG welding method is adopted, a layer of aluminum bronze is welded on the inner surface of the sleeve as a soft part of the friction pair, the service life of the whole friction pair is improved, and meanwhile, the problems that the surfacing layer is stripped when in work because the surfaced surface is extremely smooth.

Description

A kind of improvement structure of sleeve

Affiliated technical field

The utility model relates to the road heading machinery field, is specially the improvement structure of a kind of coal mine roadway development machine with the outer telescopic tube middle sleeve.

Background technology

At present, the coal mine roadway development machine uses outer telescopic tube and flexible inner core when work, sleeve interior surface in the outer telescopic tube rubs mutually with flexible interior tube outer surface, if flexible inner core and sleeve all adopt carbon steel material, wearing and tearing each other are comparatively serious, so adopt the built-up welding layer of copper in most of sleeve as a side soft in the friction pair, thereby raising abrasion resistance, in actual production during surfacing of Cu, because mostly being machine, sleeve interior surface adds the back use, roughness is too high, and the built-up welding part is easy to generate obscission when work, influence usability.

The utility model content

In order to overcome the drawback of the existing mode of production, the purpose of this utility model is to provide a kind of improvement structure of sleeve, and the sleeve top layer roughness after processing that solves surfacing of Cu in the prior art is too high, causes the built-up welding part to be easy to generate the problem that comes off when work.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of improvement structure of sleeve, this structure comprises sleeve, overlay cladding, and sleeve interior surface has groove, and the sleeve interior surface built-up welding has wearing layer.

Described groove is a vee-cut.

Described groove is: working width is that 1mm, the degree of depth are that 1mm, spacing distance are the vee-cut of 2mm.

Described wearing layer is the wearing layer of welding built-up welding.

Described wearing layer is the aluminium bronze overlay cladding.

Described sleeve is the carbon steel sleeve.

The beneficial effects of the utility model are:

1, the utility model adopts the aluminium bronze welding wire to carry out built-up welding in sleeve interior surface, as the work plane of outer telescopic tube with flexible interior tube outer surface friction, simultaneously peel off problem in order to overcome the too high overlay cladding that brings of sleeve overlaying surface roughness, the special groove of sleeve interior surface being processed certain depth, increase the adhesive power of overlay cladding, make fusion better, effectively prevent the problem of peeling off that overlay cladding causes because of the built-up welding smooth surface.

2, the utility model is at the dark groove of the inner surface car 1mm-2mm of sleeve; reduce the smooth degree of total inner surface; adopt the welding method of welding (MIG); with the aluminium bronze welding wire along the good groove built-up welding of car in sleeve interior surface; adopt multi-pass welding during built-up welding; will extend one section laterally in the seam position, to guarantee enough chipping allowances.

3, the utility model processing method is simple, and is easy to operate, improves the application life of sleeve, reduces cost.

Description of drawings:

Fig. 1 is a schematic diagram of structure of the present utility model.

Fig. 2 (a) is groove processing figure of the present utility model.

Fig. 2 (b) is the I place enlarged drawing of Fig. 2 (a).

Among the figure, 1. sleeve; 2. aluminium bronze overlay cladding; 3. groove.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As Fig. 1-shown in Figure 2, the utility model mainly comprises sleeve 1, aluminium bronze overlay cladding 2, and carbon steel sleeve 1 inner surface has groove 3, at carbon steel sleeve 1 inner surface built-up welding layer of aluminum bronze wearing layer, forms aluminium bronze overlay cladding 2.

Shown in Fig. 2 (a)-Fig. 2 (b), at carbon steel sleeve 1 inner surface turning working width is 1mm, and the degree of depth is 1mm, and spacing distance is the vee-cut 3 of 2mm, with the smooth degree of reduction entire sleeve 1 inner surface, thereby increase the adhesive power of overlay cladding at sleeve 1 inner surface; Adopt welding (MIG) method, at sleeve 1 inner surface built-up welding layer of aluminum bronze wearing layer, form aluminium bronze overlay cladding 2, thereby improve the abrasion resistance of sleeve 1 as a side soft in the friction pair with the aluminium bronze welding wire.

Claims

1. the improvement structure of a sleeve is characterized in that, this structure comprises sleeve, overlay cladding, and sleeve interior surface has groove, and the sleeve interior surface built-up welding has wearing layer.

2. according to the improvement structure of the described sleeve of claim 1, it is characterized in that described groove is a vee-cut.

3. according to the improvement structure of the described sleeve of claim 1, it is characterized in that described groove is: working width is that 1mm, the degree of depth are that 1mm, spacing distance are the vee-cut of 2mm.

4. according to the improvement structure of the described sleeve of claim 1, it is characterized in that described wearing layer is the wearing layer of welding built-up welding.

5. according to the improvement structure of the described sleeve of claim 1, it is characterized in that described wearing layer is the aluminium bronze overlay cladding.

6. according to the improvement structure of the described sleeve of claim 1, it is characterized in that described sleeve is the carbon steel sleeve.