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Bearing of a breaking device tool

A crushing device and tool technology, applied in the field of tool bushings, can solve problems such as the difficulty of replacing bearing bushes, and achieve the effects of low manufacturing costs, shortened use interruptions, and reduced manufacturing costs

Inactive Publication Date: 2008-06-11
SANDVIK MINING & CONSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with known solutions is that it is difficult and slow to replace worn bearing bushes in field conditions

Method used

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  • Bearing of a breaking device tool
  • Bearing of a breaking device tool
  • Bearing of a breaking device tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In FIG. 1 , a breaker 1 is arranged on a boom 3 in an excavator 2 . The breaker 1 can be a hydraulic, pneumatic or electric device. The crushing device 1 is pressed by the boom 3 on the material 4 to be crushed, at the same time a compressive stress pulse can be provided to a tool 6 connected to the hammer by means of an impact device 5 in the hammer and this tool 6 transmits this stress pulse to the material to be crushed. broken material. The impact device 5 generally comprises a reciprocating impact piston which impacts the impact surface of the upper end of the tool 6 . In some cases, the percussion element may be an element other than a reciprocating percussion piston. Furthermore, there may be a protective casing around the breaker 1, protecting the breaker from damage and contamination.

[0032] It may be noted that in this application the lower part 1a of the hammer refers to the end on the side of the tool 6, while the upper part 1b of the hammer refers to t...

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PUM

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Abstract

The invention relates to a method for assembling a breaker tool with a bearing, a breaker and a tool bushing. The tool (6) of the crushing device (1, 40) is equipped with a bearing, wherein at least one bearing bush (14) is made of bearing material and is arranged in the bearing space (25). There is a clearance fit between the bearing bush and the bearing space, whereby the bearing bush can be inserted manually into the bearing space. During use, the tool is supplied with a compressive stress pulse by means of the percussion device (5), whereby a stress wave (9) is transmitted in the tool, which stress wave generates motion on the tool surface in a direction perpendicular to the tool surface. This movement is transmitted to the bearing bush and deforms the bearing bush in the radial direction so that the bearing bush is pressed against the bearing space.

Description

technical field [0001] The invention relates to a method for assembling a crushing device tool with a bearing, a crushing device and a tool bushing for the bearing. The crushing device includes at least a frame, a tool and an impact device. By means of the impact element in the impact device, a compressive stress pulse is generated in the tool, which further transmits the compressive stress pulse to the material to be crushed. A bearing bush is arranged in the bearing space around the tool, a sliding surface on the inner periphery of the bearing bush engages the tool with the bearing so as to be movable in the axial direction of the tool. The objects of the invention are described in more detail in the preambles of the independent claims. Background technique [0002] A breaker is a breaking device that is used as an auxiliary device for an excavator or another machine tool when materials such as rock, concrete or other relatively hard materials are to be broken. The impa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25D17/00
CPCB25D2250/331B25D2222/54B25D2222/31B25D17/08Y10T29/49826E02F3/36E02F5/16
Inventor 奥西·卡赫拉
Owner SANDVIK MINING & CONSTR OY
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