Board hammer with dual functions of striking and squeezing

Abstract

The invention belongs to the technical field of crushing equipment, and particularly relates to a board hammer with dual functions of striking and squeezing. The board hammer with the dual functions of striking and squeezing comprises a hammer handle, a hammer shaft, a rotary hammer, a hexagonal flange face bolt, a U-shaped sheath, a positioning threaded rod and a fixed screw, wherein a shaft holeis formed in the hammer handle; the hammer shaft is arranged in the shaft hole in an interference fit manner; the rotary hammer is arranged on the hammer shaft; and the U-shaped sheath has a protection effect on the hammer handle. The hammer handle of the board hammer is manufactured from low-alloy high-strength steel, and has high strength and high toughness; and the rotary hammer is manufactured from high manganese steel and has good abrasive resistance. When the board hammer works, the rotary hammer rotates under the impact of materials, thus, the striking area is increased, and the material striking efficiency is high; the cross section of the rotary hammer is of a circular ring and four-leaf clover-like structure; the four-leaf clover-like structure generates rotary driving force under the impact of the materials, so that the rotary hammer squeezes part of the materials; the use function of the board hammer is increased; the fineness of discharged materials is small; the servicelife of the board hammer is prolonged; and the economic benefits are good. The board hammer with the dual functions of striking and squeezing is an innovation in the design and manufacturing of the board hammer.

Description

technical field [0001] The invention belongs to the technical field of crushing equipment, and in particular relates to a blow bar with dual functions of striking and squeezing. Background technique [0002] In mining, smelting, building materials and many other fields, a large amount of raw materials and reused waste need to be processed by crushers every year. The impact crusher has the advantages of simple structure, large crushing ratio, low energy consumption, high output, light weight, etc. It is widely used in various ore crushing, railway, highway, energy, cement, chemical, construction and other industries. [0003] The impact crusher is a machine that crushes materials by repeated impacts. The blow bar is fixedly installed on the high-speed rotating rotor, and several counter-attack blow bars are arranged at different angles along the crushing cavity. When the material enters the action area of ​​the blow bar, it is first crushed by the first impact of the blow b...

AI Technical Summary

Problems solved by technology

[0006] 1) The blow bar only has the function of hitting and crushing the material. After repeated hitting for many times, it may still not be able to reach the final particle size required. low efficiency

[0007] 2) In the entire structure of the blow bar, the wear-resistant surface cannot move relatively, causing the damaged part of the blow bar surface to always be at almost the same position, even if the striking surface is spliced ​​by multiple wear-resistant blocks, the damaged There is always a wear-resistant block in a fixed position, and the damaged wear-resistant block is partially damaged instead of a whole piece, and replacement causes waste of resources; while the working object of the blow bar is a material of different material, shape, and particle size. It is impossible to determine the specific location where the blow bar is vulnerable to damage during design, and it is also impossible to strengthen it in a targeted manner during manufacture

The entire crushing equipment has undergone major changes, but there is no more innovation in the technical solution of the hammer head. During the working process, the function of the rotary hammer and the fixed hammer (or movable hammer) rotating in opposite directions to squeeze the material cannot be completed.

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