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Control valve group for harvester

A technology for controlling valves and harvesters, which is applied in the hydraulic field, can solve problems such as operator fatigue, large range of motion, and complicated operation of the operator, and achieve the effects of reducing research and development costs and facilitating installation

Active Publication Date: 2016-12-07
ZHEJIANG HAIHONG HYDRAULIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of the existing mechanically controlled hydraulic system is that it is inconvenient to control. It is often necessary to install multiple joysticks in the cab. The operation of the operator is complicated and the range of motion is large, which is easy to cause fatigue to the operator.
In order to improve the convenience of operation, it is necessary to modify the harvester, but currently there is no reasonable solution in the industry that can simplify the operation while ensuring the stability of the system

Method used

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  • Control valve group for harvester
  • Control valve group for harvester
  • Control valve group for harvester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The control valve group of the harvester includes valve body 1, oil inlet interface 1a, oil return interface 1b, electromagnetic reversing valve one 2, electromagnetic reversing valve two 3, electromagnetic reversing valve three 4, diverter valve 6, interface one 1c , interface two 1d, secondary oil inlet 1e and interface three 1f.

[0037] Specifically, as figure 2 As shown, the first electromagnetic reversing valve 2 , the second electromagnetic reversing valve 3 , and the third electromagnetic reversing valve 4 are all arranged on the valve body 1 , and the diverter valve 6 is located in the valve body 1 . In this embodiment, the first electromagnetic reversing valve 2 , the second electromagnetic reversing valve 3 and the third electromagnetic reversing valve 4 are three-position four-way M-type electromagnetic valves.

[0038] like figure 1 As shown, the oil inlet port 1a is connected to the diverter valve 6 through the main oil circuit 5, and the diverter valv...

Embodiment 2

[0044] This embodiment discloses another application mode of the control valve group of the harvester in the hydraulic control system, such as Figure 11 As shown, in this embodiment, the conical screw plug 2 12 is removed so that the secondary oil inlet passage 9 can directly communicate with the control oil passage 2 8, and then the interface 2 1d and the secondary oil inlet 1e are blocked, and the interface 1 1c The oil return interface 1b is connected in the valve body 1, and the interface 3 1f is connected to the oil inlet of the header steering independent control valve 21. This connection method is suitable for, for example, the attached Figure 12 The hydraulic control system of the traditional mechanical control shown is modified to realize electric control and mechanical control, and the cost is low; but the steering cylinder 23 cannot be linked with the header cylinder 22, the reel cylinder 19 and the grain unloading cylinder 20.

Embodiment 3

[0046] The technical solution in this embodiment is basically the same as the technical solution in Embodiment 1. The difference is that in this embodiment, the secondary oil inlet passage 9 and the control oil passage 2 8 are connected, and there is a through valve body at the connection between the two. 1, the plugging hole is fixedly connected with a plugging piece, and the plugging piece can block the secondary oil inlet passage 9 and the control oil passage two 8. Install a plugging piece with a plugging head on the plugging hole, and block the secondary oil inlet passage 9 and the control oil passage 2 8 through the plugging head; install a plugging piece without a plugging head on the plugging hole , It is possible to connect the blocked secondary oil inlet passage 9 with the control oil passage two 8.

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Abstract

The invention provides a control valve group for a harvester and belongs to the technical field of hydraulic pressure. According to the control valve group for the harvester, the problem that combining of electronic control and mechanical control is difficult to achieve through a hydraulic system is solved. The control valve group for the harvester comprises a valve body. The valve body is provided with an oil inlet connector and an oil return connector. A first electromagnetic directional valve, a second electromagnetic directional valve and a third electromagnetic directional valve are fixed to the valve body. The valve body is internally provided with a flow divider valve which divides an oil circuit into a first control oil circuit and a second control oil circuit. The first control oil circuit communicates with an oil inlet of the first electromagnetic directional valve. A first connector communicating with an oil return opening of the first electromagnetic directional valve is arranged on the valve body. A second connector communicating with the second control oil circuit is arranged on the valve body. A secondary oil inlet is formed in the valve body. The valve body is internally provided with a secondary oil inlet circuit communicating with the secondary oil inlet. The second electromagnetic directional valve and the third electromagnetic directional valve are connected to the secondary oil inlet circuit in series. The valve body is provided with a third connector communicating with an oil return opening of the third electromagnetic directional valve. The secondary oil inlet circuit and the second control oil circuit can communicate with each other or can be blocked.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure and relates to a control valve group of a harvester. Background technique [0002] The harvester is an integrated machine for harvesting crops, which can complete the entire harvesting process from harvesting to loading. Existing harvesters are all provided with a hydraulic system for controlling the movement of the harvester, which can realize the control of the harvester steering system, high-position gun barrel, header, reel and grain unloading mechanism. [0003] At present, the hydraulic system of the harvester mainly adopts the mode of mechanical operation, and the various actions of the harvester are controlled through the joystick. For example, the applicant once applied for a Chinese patent [Application No. 201410035276.3; Authorized Notice No. CN 103742682A]. The background technology of this patent analyzes a common mechanically controlled hydraulic system. It can be seen f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/06
CPCF15B13/06
Inventor 何贤剑陈净生呼延宏高振家
Owner ZHEJIANG HAIHONG HYDRAULIC TECH
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