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Engineering machinery

A technology for engineering machinery and engines, which is applied in the direction of mechanical equipment, cranes, engine components, etc., can solve problems such as environmental pollution and counterweight pollution, and achieve the effect of cleaning the surface of the counterweight and inhibiting the spread of gaps

Inactive Publication Date: 2013-01-09
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is worried that the attached exhaust gas soot will pollute the counterweight and flow to the ground through rainwater to cause environmental pollution.

Method used

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  • Engineering machinery
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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0065] First, use Figure 1 ~ Figure 3 A basic structure of a small hydraulic excavator (mini excavator) as a construction machine in the first embodiment of the present invention will be described.

[0066] figure 1 is a perspective view of a small hydraulic excavator in this embodiment, figure 2 is a side view of the hydraulic excavator. image 3 From figure 1 The hydraulic excavator shown with the additional counterweight removed and only the standard counterweight installed, is the same as figure 1 A perspective view of the same small hydraulic excavator. In the following description, the hydraulic excavator is figure 1 In the state shown, the operator's front side, rear side, right side, and left side when the operator sits on the driver's seat are defined as the front side, rear side, right side, and left side.

[0067] exist Figure 1 ~ Figure 3 Among them, the hydraulic excavator has an undercarriage 1 , an upper revolving body 2 and a front working machine 3 ....

no. 2 approach

[0090] use Figure 9 ~ Figure 11 The main part of the construction machine in the second embodiment of the present invention will be described.

[0091] Figure 9 It is a combination of the rotating frame and counterweight part of the upper rotating body, and the exhaust device mounted on the rotating frame. Figure 5 The same partial cutaway side view, Figure 10 It is a diagram showing the additional weight and the exhaust gas leakage prevention exhaust pipe viewed from the inner surface side of the additional weight. For comparison, it also shows the state with the additional weight installed at the same time. Image 6 the same graph, Figure 11 It is the decomposed expression of the rotating frame, standard counterweight and additional counterweight and Figure 7 same graph.

[0092] In the present embodiment, the exhaust gas leakage preventing exhaust pipe 40A is integrally cast with the additional weight 15 on the peripheral side of the second notch 38 on the inner ...

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PUM

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Abstract

The invention provides engineering machinery. The engineering machinery comprises an exhaust device which allows a front end part of a noise-eliminating tail pipe to be inserted into a notch part formed below a standard counterweight, and thus allows waste gas to be exhausted downwards and backwards from the notch part below the standard counterweight; under the condition that an additional counterweight is mounted, the waste gas is inhibited from spreading to the clearance between the additional counterweight and the standard counterweight. A exhaust leakage-preventing exhaust pipe (40) is mounted on the inner surface of the additional counterweight (15) so as to realize bridging connection of a first notch part (37) of the standard counterweight (13) with a second notch part (38) of the additional counterweight (15); the clearance (C) between the standard counterweight (13) and the additional counterweight (15) is blocked; the front end part of the noise-eliminating tail pipe (33) is inserted into the exhaust leakage-preventing exhaust pipe (40).

Description

technical field [0001] The present invention relates to construction machines such as hydraulic excavators, and more particularly to construction machines having a structure suitable for preventing exhaust gas from interfering with counterweights formed when additional counterweights (incremental counterweights) are mounted on standard counterweights. Leaks in crevices. Background technique [0002] Generally, a construction machine such as a hydraulic excavator includes an undercarriage; an upper revolving unit rotatably mounted on the undercarriage; [0003] In addition, the upper revolving body has: a revolving frame on which the front working machine is mounted on the front side; a driver's seat provided on a bottom plate erected on the revolving frame; a counterweight provided on the rear end side of the revolving frame; an engine located on the front side of the counterweight; and an exhaust device for exhausting exhaust gas of the engine to the outside, and the like....

Claims

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Application Information

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IPC IPC(8): E02F9/00
CPCB60K13/04B66C23/72E02F9/18F01N13/20
Inventor 国领修川本纯也宫原康弘
Owner NIHON KENKI CO LTD