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A bearing in connection with a boom

A technology of supports and sliding supports, applied in the direction of linear motion bearings, bearings, shafts and bearings, can solve problems such as affecting the positioning accuracy of rock drilling machines, and achieve the effect of saving money in processing

Active Publication Date: 2012-11-07
EPIROC ROCK DRILLS AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Voids can affect positioning accuracy of rock drilling rigs

Method used

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  • A bearing in connection with a boom
  • A bearing in connection with a boom
  • A bearing in connection with a boom

Examples

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Embodiment Construction

[0026] Several embodiments of the present invention will be described below on the basis of the drawings.

[0027] figure 1 An application field of the support according to an aspect of the present invention is shown. A cantilever 1 of the type according to the invention is flexibly arranged (or configured) in relation to a carrying device 2 for the cantilever. The working cylinder 3 is flexibly connected with the carrying device 2 and the cantilever to vertically cantilever 1. At the end of the boom 1, an example of a rock drilling equipment 4 operated by the boom 1 is shown. The rock drilling equipment is a known type of equipment, and it will not be further described here.

[0028] When manipulating the rock drilling equipment and performing drilling, the boom 1 needs to be extended to position the drilling equipment. For this purpose, the cantilever 1 can be extended telescopically, and is equipped with an outer arm 5 and an inner arm 6. The outer arm 5 includes, for exampl...

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Abstract

The invention discloses a bearing related to a telescopically extensible boom (1), comprising an outer arm (5) with a front end and an inner arm (6) which is arranged in the front end and can be moved axially inside the outer arm (5). The outer arm and the inner arm comprise square tubes. Flat surfaces of the inner arm (6) extend along corresponding flat surfaces of the outer arm (5), and the boom (1) has four longitudinal sides. The bearing comprises a bearing box (10) designed as a casing with four walls (10a to 1Od) which together form a square tube structure. The bearing box (10) comprises a plurality of sliding bearings (l1a to 11d, 12a to 12d) and is inserted into the front end of the outer arm (5) between the outer arm (5) and the inner arm (6). The sliding bearings (l1a to 11d, 12a to 12d) are arranged in the walls (10a to 1Od) of the bearing box (10) and are applied against the corresponding flat surfaces of the outer arm (5) and the inner arm (6), wherein the flat surfaces extend along each other. Arranged adjustment devices (15, 20, 17a to 17c) which are related to at least one wall (10a to 10c) and are axially arranged are used for adjusting the gap between at least one sliding bearing (11a to 11c, 12a to 12c) and the applied surfaces of the inner arm (6) and the outer arm (5).

Description

Technical field [0001] The present invention relates to abearing related to a boom that can be extended telescopically. In particular, the cantilever as described herein relates to a cantilever associated with a rock drilling machine for supporting rock drilling equipment. Background technique [0002] The use of a cantilever of the type described here is, for example, in connection with a drilling rig, which may include a carrying device provided with the cantilever, on which rock drilling equipment is provided. The carrying device may be provided with a plurality of such cantilevers. Drilling rigs of this type are known and will not be described here. In order to improve the accessibility and range of drilling equipment on such a boom, a telescopic device is often used to make the boom extendable. This type of device is referred to herein as being telescopically deployed. This means that the cantilever has two or more arms, which are displaceable relative to each other in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/02F16C25/02F16C29/12
CPCF16C29/02B66C23/707
Inventor F·萨夫
Owner EPIROC ROCK DRILLS AB
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