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Working vehicle

A technology for engineering vehicles and car bodies, which is applied to vehicle parts, vehicle safety arrangements, tractors, etc., and can solve problems such as ultra-small maneuverability and increased radius of maneuver that will damage small hydraulic excavators

Inactive Publication Date: 2008-08-13
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when the balance weight W is protruded rearward, the radius of gyration at the rear end of the upper revolving body C on which the balance weight W is mounted will increase unnecessarily, which will impair the ultra-small rear maneuverability of the small hydraulic excavator A.

Method used

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Embodiment Construction

[0031] Next, the construction vehicle of the present invention will be described in detail based on the drawings showing the embodiments.

[0032] Figure 1~ Figure 4 , which represents an embodiment of the present invention applicable to a small hydraulic excavator of a kind of engineering vehicle of the present invention, the above-mentioned small hydraulic excavator (engineering vehicle) 1 has a lower walking body 2 of a walking mechanism in the form of a crawler belt and an assembly support An upper revolving body (vehicle body) 3 on the undercarriage 2 .

[0033] On the front part of the upper swing body 3, an excavation work implement (work implement) 4 having a boom 4a, a forearm 4b, and a bucket 4c is provided. ) seated driver's seat 5.

[0034] On the other hand, an engine (not shown) for traveling and working implements is mounted on the rear portion of the upper swing body 3, and the above-mentioned driver's seat 5 is provided on a cover covering the engine (not s...

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PUM

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Abstract

A working vehicle which comprises a work machine in the front section of the vehicle body and is provided with a counterweight in the rear section of the vehicle body, in which the counterweight is formed in a condition that the upper surface of the counterweight is positioned higher than the seating surface of an operator seat provided in the vehicle body, and in which a moment of the rear section of the vehicle can be increased without forming the counterweight to bulge backward, thus the work range for the work machine can be expanded without damaging the work performance of other functions.

Description

technical field [0001] The invention relates to an engineering vehicle which is composed of working implements at the front of the vehicle body and balance counterweights at the rear of the vehicle body. Background technique [0002] Conventionally, construction vehicles equipped with work tools at the front of the vehicle body have employed a configuration in which a balance counterweight is installed at the rear of the vehicle body in order to maintain the front-rear balance when operating the above-mentioned work tools (for example, refer to JP-A-10-140607). . [0003] Figure 7A , Figure 7B , represents an existing small hydraulic excavator as an example of an engineering vehicle, the small hydraulic excavator (engineering vehicle) A has a lower traveling body B with a running mechanism in the form of a crawler belt and is assembled and supported on the lower traveling body B The upper gyroscopic body C. [0004] On the front part of the upper swing body C, an excava...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/18E02F9/08B60R21/00B60R21/13B62D21/18B62D49/08B66C23/74B66F9/075
CPCB60R21/131B60R2021/0081E02F9/18G06F1/3246G06F9/445
Inventor 大塚欣一清水幸夫
Owner KOMATSU LTD