Special bucket tooth of high-frequency crushing hammer

Abstract

The invention discloses a special bucket tooth of a high-frequency crushing hammer. The special bucket tooth mainly comprises a tooth sleeve, a tooth root and a gap adjusting mechanism, wherein the tooth sleeve is symmetric left and right, the front end of the tooth sleeve is in a wedge shape, the rear part of the tooth sleeve is arranged on the tooth root in a sleeved manner and fixed on the tooth root through the gap adjusting mechanism; the cross section of the front part of the tooth sleeve is in a rectangular shape, an inner hole in the rear part of the tooth sleeve is a symmetric wedged hole with a rectangular cross section; the tooth root is in bilateral symmetry and in a wedge shape and is provided with a wedged through hole from the front and rear surfaces to the middle part; the gap adjusting mechanism comprises an upper wedged pin, a screw and a lower wedged pin, the upper wedged pin and the lower wedged pin are longitudinally symmetrically arranged in the wedged through hole of the tooth root, an oblique plane of each of the upper wedged pin and the lower wedged pin is attached to an oblique plane of the through hole of the tooth root, and the screw penetrates through the holes of the upper wedged pin and the lower wedged pin and is screwed through threads. When a gap is produced by the abrasion between the inner hole of the tooth sleeve and the matched surface of the tooth root, the gap can be conveniently eliminated through the relative movement of the tooth sleeve and the tooth root, i.e. the tooth sleeve cannot swing relative to the tooth root, so that the accuracy for selecting an acting point of the crushing hammer can be improved.

Description

technical field [0001] The invention relates to a special bucket tooth for a high-frequency breaking hammer with an inventive structure. Background technique [0002] The high-frequency breaker is driven by the hydraulic energy provided by the hydraulic system of the main engine to drive the hydraulic motor, which drives a pair of eccentric wheels in the vibration box to rotate through gear transmission, thereby forming an exciting force that changes according to the sinusoidal law, causing the breaker to generate high-frequency vibration. It is a construction machinery attachment that vibrates and crushes the work through the bucket teeth. [0003] The high-frequency breaker can replace the hydraulic breaker in a large range. It is suitable for various types of mines, quarries, tunnel construction, foundation breaking, building demolition, and beaches, ditches, rivers, wetlands and other work sites, especially for low-Platinum hardness. In 7 types of rocks such as sandston...

AI Technical Summary

Problems solved by technology

Because the main function of the high-frequency breaker is crushing, and the main function of the bucket teeth of the excavator is excavation. Therefore, when the bucket teeth of the excavator are used on the high-frequency breaker, there are structural deficiencies in the following aspects: 1. In order to facilitate excavation, the front cross section of the bucket teeth of the excavator is small in thickness direction, so it is easy to break during the crushing operation

2. Since the front cross-section of the excavator bucket tooth sleeve is small in thickness direction, when the width of the gear sleeve is the same, the volume capacity of the wear-resistant metal of the same length gear sleeve is small, resulting in excessive wear. The frequency of stopping to replace bucket teeth during work increases, which affects the working efficiency of crushing operations

3. Although the contact between the inner hole of the gear sleeve and the matching surface on the tooth root is wedge-shaped or conical, the connection between the gear sleeve and the tooth root is fixed by a pin. During work, when the inner hole of the gear sleeve and the tooth root After the mating surface on the root is worn, there will be a gap between the mating surfaces, which cannot be eliminated, resulting in a relative swing of the tooth sleeve relative to the tooth root, which is very unfavorable for the selection of the force point of the breaking hammer

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