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Control Mechanism and Method for Smooth Switching of Combine Harvester's Forward Speed

A combine harvester, advance speed technology, applied to harvesters, agricultural machinery and implements, cutters, etc., can solve problems that are not conducive to harvesting operations of harvesters, hydraulic system impact, etc.

Active Publication Date: 2020-09-11
NANJING AGRI MECHANIZATION INST MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the switch between manual and automatic operation can be realized through buttons or switches, but during the switching process, due to the mismatch between the position of the handle and the output current of the controller, there will be a step change in the control current, which is not conducive to the harvesting operation of the harvester. There are also shocks to the system

Method used

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  • Control Mechanism and Method for Smooth Switching of Combine Harvester's Forward Speed
  • Control Mechanism and Method for Smooth Switching of Combine Harvester's Forward Speed
  • Control Mechanism and Method for Smooth Switching of Combine Harvester's Forward Speed

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Embodiment Construction

[0019] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0020] Such as figure 1 As shown, the control mechanism for the smooth switching of the forward speed of the combine harvester includes a switch button, a control handle, a first relay, a second relay, a third relay, a PLC controller, an amplifier, and a handle matching actuator, which are used to obtain the forward speed, The PLC controllers for harvesting quality and implement load are respectively connected to the switching button, the first relay, the second relay, the third relay and the amplifier, and each relay is respectively provided with a common contact, a normally open contact and a normally closed contact; One relay is respectively connected with the control handle, the variable pump, and the amplifier; the second relay is respectively connected with the forward power supply of the handle actuator and the handle matching actuator used to co...

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Abstract

The invention provides a control mechanism and method for stable switching of a forward speed of a combined harvester and relates to the technical field of combined harvesters. According to the control mechanism, a PLC (Programmable Logic Controller) is connected with a switching button, a first relay, a second relay, a third relay and an amplifier separately; the first relay is connected with a control handle, a variable pump and the amplifier separately; the second relay is connected with a handle executing mechanism forward power supply and a handle matching executing mechanism separately;the third relay is connected with a handle executing mechanism reverse power supply and the handle matching executing mechanism separately. By adopting the control mechanism provided by the invention,the aims that the structure is simple, smooth transition is realized in a manual / automatic switching process, hydraulic impact is prevented and the service life of a chassis hydraulic walking systemis prolonged are achieved.

Description

technical field [0001] The invention relates to the technical field of combine harvesters, in particular to the technical field of smooth forward speed switching control. Background technique [0002] With the development of combine harvester automation and intelligent technology, the automatic control technology of combine harvester forward speed will also be gradually realized. For the chassis drive system combined with HST and mechanical gearbox and the hydraulic travel transmission system with manual displacement control variable pump, both of them convert the manual input mechanical signal into a hydraulic control signal, and change the pump displacement through this signal To adjust the forward speed, to realize the automatic control of the forward speed on this type of machine is generally to add an auxiliary actuator on the operating handle to push the joystick to realize the forward speed adjustment. In this case, in the process of switching between manual and auto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01D41/127
CPCA01D41/127
Inventor 金梅关卓怀王刚李海同吴崇友江涛沐森林
Owner NANJING AGRI MECHANIZATION INST MIN OF AGRI
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