Glasses plate and cutting ring for concrete delivery pump

Abstract

The invention discloses glasses plate and a cutting ring used for a concrete delivery pump, comprising a base and a hard alloy ring arranged on the cutting surface of the base; the hard alloy ring radially consists of a plurality of hard alloy blocked; the internal edge of the hard alloy block is folded and extends into a material delivery hole along the internal wall of the material delivery hole which is arranged on the base; a hard alloy cirque attached to the internal wall of the material delivery hole is assembled in the material delivery hole of the base; a linear spacing is reserved between adjacent hard alloy blocks in the material delivery hole at the cutting surface; the hard alloy blocks and the adjacent surfaces of the base are welded together; the linear spacing between adjacent hard alloy blocks are filled with welding flux. The glasses plate and cutting ring has good anti-wear and anti-shock performance and long service life.

Description

technical field [0001] The invention relates to accessories for concrete conveying equipment, in particular spectacle plates and cutting rings for concrete conveying pumps. Background technique [0002] The spectacle plate and the cutting ring are a pair of closely matched and relatively moving parts used on the concrete delivery pump (concrete pump). The cutting ring that swings when pumping concrete plays a cutting role on the concrete. Since concrete passes through the feed hole of the spectacle plate and the cutting ring, the inner wall of the feed hole of the spectacle plate and the cutting ring and the mating surface of the spectacle plate and the cutting ring, that is, the cutting surface, should be treated with wear resistance. [0003] At present, a commonly used cemented carbide spectacle plate has a structure as shown in Figures 1 and 3. A hard alloy ring 1 is embedded in the cutting surface of the spectacle plate substrate 2 by welding to form a wear-resistant pl...

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Problems solved by technology

However, this scheme has many basic components and different shapes, which undoubtedly increases the amount of processing, especially for hard alloys, which is difficult to process, so this method actually increases the difficulty of processing and welding of products. Also increased the workload of processing and welding

[0013] (2) Using Z-shaped sheets and fan-shaped plates whose edges are folded lines, although it is possible to make the adjacent fan-shaped plates and adjacent Z-shaped sheets snap together, and by making the butt joints between adjacent plates and sheets become It is bent to improve its airtightness to prevent the concrete mortar from leaking from the joint, but the problem brought by the use of the broken line edge is not only the difficulty of processing, but also the low processing accuracy, and at the same time, affected by the processing accuracy and assembly accuracy, it is actually difficult to ensure end-to-end connection The joint between the fan-shaped plate and the Z-shaped sheet forms a tight extrusion, but it is easy to form a leak point at the joint and cause the seal to fail

[0014] (3) Since the Z-shaped sheet in the discharge hole, the fan-shaped plate on the cutting surface, and the bar-shaped block on the outer ring are independent parts welded to the substrate, and the adjacent Z-shaped sheets, the adjacent fan-shaped The plates are squeezed together to form an occlusal structure and try to make the fold-line splicing gap as small as possible to achieve the sealing effect. The splicing seams between the end-to-end parts are not and cannot be welded, that is, only in the Z-shaped sheet The upper and lower edges and the inner and outer edges of the fan-shaped plate are welded to the substrate, resulting in poor overall performance and low bonding strength with the substrate

In the process of use, the direction of force on the hard alloy plate and sheet at the cutting surface and in the discharge hole is different (the impact force on the fan-shaped plate at the cutting surface is along the width direction of the fan-shaped plate during cutting), and the During the impact, the impact force on the local plates, sheets, and bars is all transmitted to the flux at the welding place, and because the above-mentioned parts are only welded at both ends, it is very easy to cause the hard alloy fan-shaped plate or Z-shaped sheet to fall off, or Due to the impact fracture between the cemented carbide material and the substrate due to missing welding, the entire product will be scrapped, which will reduce its service life

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