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Work vehicle

A technology for operating vehicles and nozzles, which is applied in agriculture, transmissions, and components with teeth, etc., can solve the problems of increased corrosion, achieve the effects of preventing noise and vibration, improving work efficiency, and stopping reliably

Active Publication Date: 2016-08-17
ISEKI & CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, if the power of the hydraulic transmission is maintained, the number of pistons assembled in the hydraulic transmission is reduced to increase the discharge amount of working oil equivalent to one piston, and the two grooves 84 spray The degree of erosion of the two recesses 88a, 88a on one side of the wall surface forming the nozzle in the valve plate 86 where the discharged working oil collides also increases.

Method used

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Embodiment Construction

[0043] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

[0044] figure 1 and figure 2 It is a side view and a top view of a passenger-type rice transplanter equipped with a fertilization device as a granular material output device which is a typical example of the seedling transplanter of the present invention. This passenger-use rice transplanter 1 with a fertilizing device is equipped with a seedling planting unit 4 capable of being raised and lowered via a lifting link device 3 on the rear side of the traveling vehicle body 2, and a fertilizing device 5 is provided on the rear upper side of the traveling vehicle body 2. main part of . The boarding operator faces the advancing direction of the riding-type rice transplanter, and the left and right directions are respectively referred to as left and right, and the advancing direction and the backward direction are respectively referred to as front and rear.

[0045] The...

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Abstract

The present invention provides a working vehicle equipped with a hydraulic transmission device capable of preventing the nozzle of a valve plate from being corroded by working oil sprayed from the groove of the valve plate toward the nozzle in the valve plate. This work vehicle is provided with a hydraulic transmission including an input shaft actuated by receiving a driving force from a drive source, an input-side hydraulic cylinder block rotating integrally with the input shaft, and a The hydraulic cylinder block on the output side that is rotated by the hydraulic pressure of the cylinder block, and the output shaft that rotates integrally with the hydraulic cylinder block on the output side, each of the hydraulic cylinder block on the input side or the hydraulic cylinder block on the output side is equipped with a plurality of hydraulic pressure Cylinder, a valve plate (86) is provided with a nozzle port for working oil from the hydraulic cylinder, and a plurality of grooves (84) are provided in the nozzle port. inner cross.

Description

technical field [0001] The present invention relates to a work vehicle equipped with a hydraulic transmission. Background technique [0002] The valve plate 86 of the hydraulic continuously variable transmission (HST) commonly used in work vehicles is Figure 13 The shape shown, such as Figure 13 As shown in the top view of the valve plate 86 in (a), on the valve plate 86, on the same circumference around the center O of the valve plate 86, for example, a spout 88 made of one side and a spout 89 on the other side are provided. Six nozzles (spaces) formed as arc-shaped long holes. In addition, a pair of grooves (notches) 84 arranged in parallel are formed on the wall surface of the valve plate 86 forming the above-mentioned nozzles, and the grooves 84 facilitate movement of hydraulic oil during acceleration or deceleration. The two grooves 84 are capable of jetting hydraulic oil toward the arc-shaped nozzle at a predetermined angle. [0003] Such as Figure 13 In (b), as s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/42A01C11/02
CPCA01C11/006F16H61/0009F16H61/42F16H2061/0046A01C11/02F16H39/14F16H2061/6605
Inventor 阪田贤一郎小松卓司
Owner ISEKI & CO LTD