Hydraulic pipe protection structure of construction machinery

Abstract

The invention provides a hydraulic pipe protection structure of an engineering machine, which can simply install a pipe retainer on an insertion hole part of a bottom plate, retain the operation of a hydraulic pipe by the installed pipe retainer and additionally reduce the number of the parts. A sleeve (11) for retaining the hydraulic pipe (7) is installed in the insertion hole (1a) of the bottom plate (1) and integrally composed of an upper cylinder wall (11a), a plurality of clamping slices (11e), a flange part (11b), a lower cylinder wall (11e) and a plurality of claw parts (11f). The hydraulic pipe (7) inserted into an insertion space (11d) of the sleeve (11) is connected with a belt (13) clamped on a projection part (11e1) of the clamping slice (11e). In addition, the sleeve (11) is embedded into the insertion hole (1a) of the bottom plate (1) by the claw parts (11f).

Description

technical field [0001] The present invention relates to a hydraulic pipe protection structure for a construction machine, which is mounted on a construction machine such as a hydraulic excavator, and includes a pipe holding portion arranged in an insertion hole portion of a bottom plate of a cab and holding a hydraulic pipe passing through the insertion hole. Background technique [0002] As such a conventional technique, there is a technique disclosed in Patent Document 1. This prior art is configured to fix the divided fixing bracket to the vehicle surface, that is, the insertion hole portion formed on the ground of the cab of the construction machine, that is, the floor plate, by using fastening screws, so that the rotating body can rotate freely. The ground shaft is supported by the fixed bracket, and a tube holding portion that holds a control tube passing through the insertion hole, that is, a hydraulic tube, is fitted in the rotating body. With such a configuration, ...

AI Technical Summary

Problems solved by technology

However, in this prior art, when the tube holder is mounted on the insertion hole portion of the vehicle surface and the control tube is held by the installed tube holder, it is necessary to fit the tube holder holding the control tube into the vehicle surface. The work on the rotating body, the work of supporting the rotating body shaft on the fixed bracket, and the work of fixing the fixed bracket to the vehicle surface with mounting screws make it easy to increase the number of work steps

In addition, this prior art requires a divided fixing bracket, mounting fastening screw, rotating body, and pipe holding portion, so the number of parts increases.

Because of this, there is a problem in the prior art that such a tube holder is installed in the insertion hole portion of the vehicle surface, and the work required to hold the control tube by the installed tube holder is increased.

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