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Working machine posture control valve constitution and lifting device of working machine

A lifting device and working machine technology, which is applied to the lifting devices of agricultural machinery, agricultural machinery and implements, and adjustment devices, etc., can solve problems such as offset and fluctuation of the spool operating point, and achieve the realization of the number of parts, the reduction of piping, and the realization of The effect of miniaturization

Pending Publication Date: 2008-03-12
KANZAKI KOKYUKOKI MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the dimensional accuracy of the solenoid valve control, the operating point of the spool fluctuates, and the movement of the valve pushed by the spool fluctuates. Depending on the situation, the timing of discharging the oil in the cylinder may deviate.

Method used

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  • Working machine posture control valve constitution and lifting device of working machine
  • Working machine posture control valve constitution and lifting device of working machine
  • Working machine posture control valve constitution and lifting device of working machine

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Embodiment Construction

[0062] Hereinafter, the embodiments of the present invention will be described in detail using the drawings. Furthermore, in the following description, although a tractor that pulls a cultivator as a ground work vehicle is described, as long as it is a vehicle that uses hydraulic pressure to raise and lower a work machine that performs work on the ground, it may be a vehicle other than it. vehicle. For example, it may be a vehicle with a ground preparation work machine, a vehicle with a soil drilling work machine, a vehicle with a seedling work machine, a vehicle with a lawn mower work machine, or the like. In addition, the hydraulic control circuit described below is an example for explanation, as long as it is used to reduce the work machine, and is used to use a composite control valve, that is, to use an electromagnetic control valve, a spool that can use an electromagnetic control valve The hydraulic control circuit of the compound control valve combined with the push-open ch...

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Abstract

The present invention provides a working machine position and posture controlling used valve structure of the earth-working vehicle, is the working machine position and posture controlling used valve structure of the earth-working vehicle to supply the pressure oil from the hydraulic pump to the working machine elevation-and-subsidence used hydraulic cylinder for elevating or subsiding the working machine of the earth-working vehicle and the working machine inclining used hydraulic cylinder for inclining the working machine, the device is characterized in that the upper-and-lower position adjusting valve body which forms the upper-and-lower position adjusting valve that is used to adjust the upper-and-lower position of the working machine of the earth-working vehicle and the inclining adjusting valve body that composes the inclining adjusting valve for adjusting the inclining angle of the working machine are integrated at the condition that the oil way which are arranged at the inner side of the intermediate between the two valve bodies are directly connected with the oil way at the inner side of the two valve bodies or at the condition that the oil ways arranged at the inner side of the two valve bodies are directly connected.

Description

Technical field [0001] The present invention relates to a work machine lifting device of a ground work vehicle, and more particularly to a work machine lifting device of a ground work vehicle that uses hydraulic pressure to lift the work machine. Background technique [0002] The tractor, which is a ground work vehicle, can use an engine mounted on the front part of the vehicle body to rotationally drive the tilling claws of the work machine provided at the rear part of the vehicle body. The working machine is connected to the rear part of the vehicle body so as to be able to move up and down (up and down) by an upper link, a lower link, and the like. The working machine can realize the adjustment of the left and right inclination by the hydraulic cylinder for working machine tilt, and can realize the raising and lowering by the hydraulic cylinder for lifting of the working machine. That is, the two lower arms used to support the working machine on the lower side of the vehicle b...

Claims

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Application Information

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IPC IPC(8): A01B63/10A01B63/32F15B13/02
Inventor 镰田稔
Owner KANZAKI KOKYUKOKI MFG
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