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Suspension device for working vehicle

A suspension device and work vehicle technology, which is applied to tracked vehicles, motor vehicles, transportation and packaging, etc., can solve problems such as poor ride feel and large impact, and achieve the effects of stabilizing excavation operations, ensuring driving force, and improving ride feel.

Inactive Publication Date: 2012-05-16
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, in the above-mentioned conventional suspension device, on uneven ground or the like, only during non-work travel such as moving on the spot, when the traveling device 4 on one side crosses the obstacle M, the part of the obstacle M will also be hit. To be temporarily lifted from the ground and then to be lowered (see Figure 9 (a) to (d)), there is a problem that the impact when falling is large, and the ride quality during non-working driving is poor.

Method used

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  • Suspension device for working vehicle
  • Suspension device for working vehicle
  • Suspension device for working vehicle

Examples

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Embodiment Construction

[0043] Next, specific embodiments of the suspension device for a work vehicle according to the present invention will be described with reference to the drawings. In addition, the embodiment described below is the example which applied this invention to the bulldozer which is a work vehicle, However, Of ​​course, it is not limited to this. In addition, hereinafter, unless otherwise specified, the front, rear, left, and right directions correspond to the front, rear, left, and right directions when the driver is seated in the driver's seat.

[0044] (Explanation of the overall structure of the bulldozer)

[0045] figure 1 The bulldozer 1 shown includes: a vehicle body 3 with a driver's cab 2 constituting a cab; crawler-type traveling devices (only the left side in the figure) 4, 4' arranged on the left and right sides of the vehicle body 3; The front working machine (dozer blade device) 5 arranged on the front side of the vehicle body 3; the rear working machine (dozer blade...

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PUM

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Abstract

A suspension device for a working vehicle, capable of improving the ride comfort of the vehicle when the vehicle travels without working such as when the vehicle only moves between sites on an uneven ground, etc. and capable of stably assuring driving force when the vehicle travels while working such as when the vehicle performs excavation work on an uneven ground etc. A suspension device (60) for a bulldozer (1), comprising a equalizer bar (61) for connecting underbody devices (4, 4') arranged on both sides of the vehicle body (3), the equalizer bar (61) being provided to the vehicle body (3) so as to be rockable up and down, wherein the suspension device (60) is provided with rocking angle change cylinders (65) which serve as maximum rocking angle change means for changing the maximum rocking angle of the equalizer bar (61).

Description

technical field [0001] The present invention relates to a suspension device of a work vehicle using a stabilizer bar. Background technique [0002] As a work vehicle, for example, a bulldozer is configured to include a vehicle body and crawler-type traveling devices arranged on left and right sides of the vehicle body. In this type of bulldozer, with regard to a conventional suspension device using a balance bar for ensuring stable driving force on uneven ground, etc., the Figure 9 The schematic diagrams of (a) to (d) are described below. [0003] exist Figure 9 In the suspension device shown in (a), the respective front portions of the left and right traveling devices 4, 4' are connected by a balance bar 61. In this balance bar 61 , the central portion thereof is connected to a vehicle body (not shown) via a pin having a rotation axis in the horizontal direction, and supports the vehicle body swingably around the pin as a rotation center. [0004] On the other hand, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D55/10E02F9/02E02F9/22
CPCB62D55/084E02F9/028B62D55/112B62D55/0842E02F9/2257
Inventor 久礼一树
Owner KOMATSU LTD
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