CN2795486Y

CN2795486Y - Cutting ring

Info

Publication number: CN2795486Y
Application number: CN 200520070638
Authority: CN
Inventors: 顾祖良; 殷建明; 肖平安; 单小宏
Original assignee: P-TECH POWDER INJECTION MOLDING CHANGSHU PTE LTD
Current assignee: P-TECH POWDER INJECTION MOLDING CHANGSHU PTE LTD
Priority date: 2005-04-08
Filing date: 2005-04-08
Publication date: 2006-07-12
Anticipated expiration: 2015-04-08

Abstract

The utility model relates to a cutting ring used for crushing the bulk materials of concrete on a concrete conveying pump, which belongs to a cutting tool. The utility model is composed of a steel body 1 and a wear resistant ring 2 which is combined with the steel body 1 via a soldering layer C, wherein a steel body dummy club 11 is formed in the middle of a faying face on which the steel body 1 and the wear resistant ring 2 are combined; a cavity 21 is formed on the wear resistant ring 2 at the position corresponding to the steel body dummy club 11; the steel body dummy club 11 protrudes into the cavity 21. The utility model improves the structures of the steel body 1 and the wear resistant ring 2, so that the joint between a ring body of the wear resistant ring 2 and the steel body 1 shows multiple folding line combination. The utility model efficiently prevents the problem that the wear resistant ring 2 becomes loose due to the early cracks of the wear resistant ring 2 along the welding faying face of the soldering layer C during use, so that the service life of the utility model can be prolonged.

Description

Cutting ring

Technical field

The utility model relates to a kind of cutting ring, uses on concrete pump, and the bulk materials fragmentation with in the concrete belongs to cutting tool.

Background technique

Chinese patent notice of authorization CN2610113Y discloses the long-life cutting ring that a kind of concrete pump is used, and its structure is by shown in Figure 1, and it is the wear ring 2 that is convex ring shape by the inwall welding-on to the endoporus 3 of the outer surface of steel body 1 and steel body 1 on the whole; Arc-welding has hard alloy abrasion-resistant layer 4 on the outer diametric plane of steel body 1; Arc-welding has hard alloy abrasion-resistant layer 5 on the inwall of endoporus 3 deep layers.The technical contribution of this patent is to make the surface wear degree of cutting ring remain to the degree of wearing and tearing synchronously with endoporus 3, improve the whole service life of cutting ring by this, thereby solved in the prior art existing endoporus 3 than the fast problem of cemented carbide surface wear on steel body 1 surface.Yet still have shortcoming, the axial contact surface between the one, steel body 1 and wear ring 2 is for to contact firmly, and the load-carrying ability that causes withstanding shocks is poor, occur easily occurring separating between wear ring 2 and the steel body 1, and also be that wear ring 2 comes off too early; Its two, no matter be that hard alloy abrasion-resistant layer 4 or wear ring 2 all belong to direct abrading section, in use very easily crack the problem that wear ring comes off too early that causes by impulsive load.

Chinese patent notice of authorization CN2639555Y also discloses a kind of cutting ring that is used on the concrete pump, this patented technology scheme is intended to improve the wear resistance and the impact strength of cutting ring, concrete structure is by shown in Figure 2, on as the steel part 1 of cutting ring ring body by mosaic mode with wear ring 2 arc-welding of a T-shaped ring structure of shape on the surface of steel body 1 and the endoporus 3 of steel body 1, because the technical spirit of this patent is equal to the technical spirit of last patent basically, therefore, the two place's deficiencies that have last patent equally.

Summary of the invention

Task of the present utility model is to provide a kind of wear ring that can effectively prevent to come off and integrally improve the cutting ring in working life.

Task of the present utility model is finished like this, and a kind of cutting ring is formed by steel body 1 with by the wear ring 2 that brazing layer C is combined on the steel body 1, and the middle part of the junction plane that described steel body 1 combines with wear ring 2 is formed with steel body boss 11; Described wear ring 2 is formed with cavity 21 at the position corresponding to described steel body boss 11, and steel body boss 11 protrudes in cavity 21.

The sectional shape of steel body boss 11 described in the utility model is trapezoidal, and the shape of the cavity 21 that matches with it also is trapezoidal.

The utility model is owing to done improvement to the structure of steel body 1 and wear ring 2, making the ring body of wear ring 2 and binding site between the steel body 1 show as multiple broken line combines, can prevent effectively in use because of wear ring 2 cracks the problem that wear ring 2 gets loose that causes too early along the solder bond face of brazing layer C, to improve the service life that produces.

Description of drawings

Figure 1 shows that the sectional view of the cutting ring in the prior art.

Figure 2 shows that the sectional view of the another kind of cutting ring in the prior art.

Figure 3 shows that the overall structure figure of the utility model cutting ring.

Figure 4 shows that the sectional view of Fig. 3.

Embodiment

Ask for an interview Fig. 3, the steel body 1 of one orate 3, this steel body 1 forms steel body boss 11 with the middle part of the junction plane that wear ring 2 mutually combines, the height of this steel body boss 11 and width with so that it is received into or claims to coincide is advisable in the cavity 21 of wear ring 2 formed bell shape, that is to say, what wear ring 2 was constituted on the whole is the wear ring 2 of a bell shape, and the vacancy position in its cover chamber is compensated by steel body boss 11.Fixedly perform to ultimate attainment degree for what make wear ring 2 and steel body boss 11, so the sectional shape of steel body boss 11 is processed into trapezoidal, the shape of cavity 21 is also right.Make wear ring 2 and steel body 1 pricker solid by brazing layer C.As can be seen from the figure, material is to show as multiple broken line welded structure form by combining of brazing layer C between the steel body 1 of wear ring 2 and the load performance excellence that withstands shocks of cemented carbide high-abrasive material, thereby can hinder crackle effectively along the junction plane rapid diffusion, avoid wear ring 2 to occur becoming flexible too early and even coming off.It is on probation that the claimant transfers to applying unit with the cutting ring of the utility model structure, behind delivering concrete 1.5 ten thousand steres, observe, the result shows that wear ring 2 is still keeping excellent fixed relationship with steel body 1, and the position of wear ring 2 that is positioned at endoporus 3 places of steel body 1 does not have influence yet and continues to use sign.

Claims

1, a kind of cutting ring is formed by steel body (1) with by the wear ring (2) that brazing layer C is combined on the steel body (1), it is characterized in that the middle part of the junction plane that described steel body (1) combines with wear ring (2) is formed with steel body boss (11); Described wear ring (2) is formed with cavity (21) at the position corresponding to described steel body boss (11), and steel body boss (11) protrudes in cavity (21).

2, cutting ring according to claim 1 is characterized in that the sectional shape of described steel body boss (11) is trapezoidal, and the shape of the cavity that matches with it (21) also is trapezoidal.