Harvester escape hydraulic control system and method

Abstract

The application discloses a kind of harvester escape hydraulic control system and method, it is related to agricultural machinery technical field, the first oil port of right rear proportional flow valve and the first oil port of left rear proportional flow valve are respectively connected the first oil port of pump body, the second oil port of right rear proportional flow valve connects the first oil port of right rear drive module, the second oil port of left rear proportional flow valve connects the first oil port of left rear drive module, the second oil port of right rear drive module and the second oil port of left rear drive module are respectively connected the second oil port of pump body, right rear proportional flow valve is controlled by right rear proportional flow valve pilot valve, left rear proportional flow valve is controlled by left rear proportional flow valve pilot valve, right rear drive module is used to drive right rear wheel rotation, left rear drive module is used to drive left rear wheel rotation.The application can realize the automatic escape of harvester, improve work efficiency, reduce labor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery technology, in particular to a harvester escape hydraulic control system and method. BACKGROUND

[0002] With the continuous improvement of people's living standards, the requirement of reducing labor intensity in agricultural production is more intense, and light and simple agricultural equipment is accepted by the new generation of farmers.

[0003] Among them, various crop harvesters, such as wheat harvesters, are a kind of light and simple agricultural harvesting equipment. The wheat harvester is mainly composed of a vehicle part and a harvesting system part. Limited by cost considerations, the travel of the harvester is in the front drive mode, which will cause the harvester to be trapped in some slippery and muddy or undulating fields, and the harvester cannot travel normally, resulting in the situation of being trapped, and then being pulled out by other manpower or vehicles, which seriously affects the work efficiency and even cannot continue to work. SUMMARY

[0004] The purpose of the present application is to provide a harvester escape hydraulic control system and method to solve the problems existing in the prior art, realize the automatic escape of the harvester, improve the work efficiency, and reduce the labor.

[0005] To achieve the above purpose, the present application provides the following scheme:

[0006] The present application provides a harvester escape hydraulic control system, comprising a right rear drive module, a left rear drive module, a right rear proportional flow valve, a right rear proportional flow valve pilot valve, a left rear proportional flow valve, a left rear proportional flow valve pilot valve and a pump body, the first oil port of the right rear proportional flow valve and the first oil port of the left rear proportional flow valve are connected to the first oil port of the pump body, the second oil port of the right rear proportional flow valve is connected to the first oil port of the right rear drive module, the second oil port of the left rear proportional flow valve is connected to the first oil port of the left rear drive module, the second oil port of the right rear drive module and the second oil port of the left rear drive module are connected to the second oil port of the pump body, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve, the right rear drive module is used for driving the right rear wheel to rotate, and the left rear drive module is used for driving the left rear wheel to rotate.

[0007] Preferably, the right rear drive module is a right rear drive motor, and the left rear drive module is a left rear drive motor.

[0008] Preferably, the pump body is a closed pump.

[0009] Preferably, the drain port of the right rear proportional flow valve and the drain port of the left rear proportional flow valve can communicate with the oil return.

[0010] The application also provides a hydraulic control method of the harvester escape hydraulic control system.

[0011] When the right rear wheel needs to be independently forward rotated, the pump body is forward rotated and the right rear proportional flow valve pilot valve is opened at maximum opening degree, hydraulic oil flows to the first oil port of the right rear proportional flow valve through the first oil port of the pump body, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve and is opened at maximum opening degree, then hydraulic oil flows to the first oil port of the right rear drive module through the second oil port of the right rear proportional flow valve, and the right rear drive module drives the right rear wheel to be forward rotated at full speed, and meanwhile, hydraulic oil flows to the second oil port of the pump body through the second oil port of the right rear drive module.

[0012] When the right rear wheel needs to be independently reverse rotated, the pump body is reverse rotated and the right rear proportional flow valve pilot valve is opened at maximum opening degree, hydraulic oil flows to the second oil port of the right rear drive module through the second oil port of the pump body, and drives the right rear drive module to be reverse rotated, hydraulic oil flows to the first oil port of the pump body through the right rear proportional flow valve, meanwhile, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve and is opened at maximum opening degree, and the right rear drive module drives the right rear wheel to be reverse rotated at full speed.

[0013] When the left rear wheel needs to be independently forward rotated, the pump body is forward rotated and the left rear proportional flow valve pilot valve is opened at maximum opening degree, hydraulic oil flows to the first oil port of the left rear proportional flow valve through the first oil port of the pump body, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve and is opened at maximum opening degree, then hydraulic oil flows to the first oil port of the left rear drive module through the second oil port of the left rear proportional flow valve, and the left rear drive module drives the left rear wheel to be forward rotated at full speed, and meanwhile, hydraulic oil flows to the second oil port of the pump body through the second oil port of the left rear drive module.

[0014] When the left rear wheel needs to be independently reverse rotated, the pump body is reverse rotated and the left rear proportional flow valve pilot valve is opened at maximum opening degree, hydraulic oil flows to the second oil port of the left rear drive module through the second oil port of the pump body, and drives the left rear drive module to be reverse rotated, hydraulic oil flows to the first oil port of the pump body through the left rear proportional flow valve, meanwhile, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve and is opened at maximum opening degree, and the right rear drive module drives the right rear wheel to be reverse rotated at full speed.

[0015] When the right rear wheel and the left rear wheel need to advance at the same time but at different speeds, the pump body, the right rear proportional flow valve pilot valve and the left rear proportional flow valve pilot valve can be adjusted to any opening, hydraulic oil flows to the first oil port of the right rear proportional flow valve and the first oil port of the left rear proportional flow valve through the first oil port of the pump body, hydraulic oil flows to the first oil port of the right rear drive module through the second oil port of the right rear proportional flow valve, and flows to the first oil port of the left rear drive module through the second oil port of the left rear proportional flow valve, and drives the right rear wheel to rotate forward, and drives the left rear wheel to rotate forward, and the rotation speeds of the left rear wheel and the right rear wheel are different, at the same time, hydraulic oil flows to the second oil port of the pump body through the second oil port of the right rear drive module and the second oil port of the left rear drive module.

[0016] When the right rear wheel and the left rear wheel need to reverse at the same time but at different speeds, the pump body, the right rear proportional flow valve pilot valve and the left rear proportional flow valve pilot valve can be adjusted to any opening, hydraulic oil flows to the second oil port of the left rear drive module and the second oil port of the right rear drive module through the second oil port of the pump body, the right rear drive module drives the right rear wheel to reverse, and the left rear drive module drives the left rear wheel to reverse, and the rotation speeds of the left rear wheel and the right rear wheel are different, at the same time, hydraulic oil flows to the first oil port of the pump body through the first oil port of the left rear proportional flow valve and the first oil port of the right rear proportional flow valve.

[0017] The present application has the following technical effects relative to the prior art:

[0018] The harvesting machine escape hydraulic control system provided by the application, the first oil port of the pump body is connected with the right rear proportional flow valve, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve, the right rear proportional flow valve is connected with the first oil port of the right rear wheel drive module, the second oil port of the right rear wheel drive module is connected with the second oil port of the pump body, and a right rear drive module loop is formed; the first oil port of the pump body is connected with the left rear proportional flow valve, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve, the left rear proportional flow valve is connected with the first oil port of the left rear wheel drive module, the second oil port of the left rear wheel drive module is connected with the second oil port of the pump body, and a left rear drive module loop is formed. Through the above design, the original pump body and other hydraulic elements in the harvesting system are used, only one hydraulic control system is added, and the drive module installed on the rear wheel of the vehicle is used to realize the four-wheel drive function of the vehicle, thereby realizing the self-escape function, so that the harvester can adapt to various complex ground conditions, and the engine power and complex control system of the vehicle do not need to be increased, and the advantages of environmental protection, green, energy saving and high escape efficiency are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without any creative effort based on these drawings also belong to the protection scope of the present application.

[0020] Figure 1 Structure diagram of the hydraulic control system for the harvester escape in the embodiment one;

[0021] In the figure: 1-right rear drive module, 2-left rear drive module, 3-right rear proportional flow valve, 4-right rear proportional flow valve pilot valve, 5-left rear proportional flow valve, 6-left rear proportional flow valve pilot valve, 7-pump body, 8-oil return, 9-right rear wheel, 10-left rear wheel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the protection scope of the present application.

[0023] The purpose of the present application is to provide a harvester escape hydraulic control system and method to solve the problems in the prior art, realize the automatic escape of the harvester, improve the work efficiency, and reduce the labor.

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment one

[0026] As Figure 1As shown, the embodiment provides a harvester escape hydraulic control system, which comprises a right rear drive module 1, a left rear drive module 2, a right rear proportional flow valve 3, a right rear proportional flow valve pilot valve 4, a left rear proportional flow valve 5, a left rear proportional flow valve pilot valve 6 and a pump body 7, the first oil port of the right rear proportional flow valve 3 and the first oil port of the left rear proportional flow valve 5 are connected to the first oil port of the pump body 7 respectively, the second oil port of the right rear proportional flow valve 3 is connected to the first oil port of the right rear drive module 1, and the second oil port of the left rear proportional flow valve 5 is connected to the first oil port of the left rear drive module 2, the right rear drive module 1 and the left rear drive module 2 can rotate simultaneously or separately, and can also rotate at the same speed but at different speeds, the second oil port of the right rear drive module 1 and the second oil port of the left rear drive module 2 are connected to the second oil port of the pump body 7 respectively, the right rear proportional flow valve 3 is controlled by the right rear proportional flow valve pilot valve 4, and the left rear proportional flow valve 5 is controlled by the left rear proportional flow valve pilot valve 6, thereby adjusting the flow rate of the right rear proportional flow valve 3 and the left rear proportional flow valve 5 respectively, so as to control the start-stop and rotating speed of the right rear drive module 1 and the left rear drive module 2 respectively, the right rear drive module 1 is used to drive the right rear wheel 9 to rotate, and the left rear drive module 2 is used to drive the left rear wheel 10 to rotate, thereby controlling the steering and rotating speed of the left rear wheel 10 and the right rear wheel 9 through two main oil paths respectively.

[0027] Specifically, the right rear drive module 1 is a right rear drive motor, and the left rear drive module 2 is a left rear drive motor.

[0028] The pump body 7 is a closed pump.

[0029] The drain port of the right rear proportional flow valve 3 and the drain port of the left rear proportional flow valve 5 can be communicated with the oil return 8.

[0030] Embodiment two

[0031] The embodiment provides a hydraulic control method based on the harvester escape hydraulic control system in embodiment one, which comprises the following cases:

[0032] When the right rear wheel 9 needs to be individually forward rotated (for example, when the left rear wheel 10 slips), the pump body 7 is forward rotated, the right rear proportional flow valve pilot valve 4 is opened at the maximum opening, hydraulic oil flows from the first oil port of the pump body 7 to the first oil port of the right rear proportional flow valve 3, the right rear proportional flow valve 3 is controlled by the right rear proportional flow valve pilot valve 4 and is opened at the maximum opening, then hydraulic oil flows from the second oil port of the right rear proportional flow valve 3 to the first oil port of the right rear drive module 1, and the right rear drive module 1 drives the right rear wheel 9 to be forward rotated at full speed, at the same time, hydraulic oil flows from the second oil port of the right rear drive module 1 to the second oil port of the pump body 7.

[0033] When the right rear wheel 9 needs to be reversed alone (for example, when the left rear wheel 10 slips), the pump body 7 is reversed, and the right rear proportional flow valve pilot valve 4 is opened at the maximum opening, hydraulic oil flows from the second oil port of the pump body 7 to the second oil port of the right rear drive module 1, and drives the right rear drive module 1 to reverse, hydraulic oil flows from the right rear proportional flow valve 3 to the first oil port of the pump body 7, at the same time, the right rear proportional flow valve 3 is controlled by the right rear proportional flow valve pilot valve 4 to open at the maximum opening, and the right rear drive module 1 drives the right rear wheel 9 to reverse at full speed;

[0034] When the left rear wheel 10 needs to be forward alone (for example, when the right rear wheel 9 slips), the pump body 7 is forward, and the left rear proportional flow valve pilot valve 6 is opened at the maximum opening, hydraulic oil flows from the first oil port of the pump body 7 to the first oil port of the left rear proportional flow valve 5, and the left rear proportional flow valve 5 is controlled by the left rear proportional flow valve pilot valve 6 and opened at the maximum opening, then hydraulic oil flows from the second oil port of the left rear proportional flow valve 5 to the first oil port of the left rear drive module 2, and drives the left rear drive module 2 to drive the left rear wheel 10 to forward at full speed, at the same time, hydraulic oil flows from the second oil port of the left rear drive module 2 to the second oil port of the pump body 7;

[0035] When the left rear wheel 10 needs to be reversed alone (for example, when the right rear wheel 9 slips), the pump body 7 is reversed, and the left rear proportional flow valve pilot valve 6 is opened at the maximum opening, hydraulic oil flows from the second oil port of the pump body 7 to the second oil port of the left rear drive module 2, and drives the left rear drive module 2 to reverse, hydraulic oil flows from the left rear proportional flow valve 5 to the first oil port of the pump body 7, at the same time, the left rear proportional flow valve 5 is controlled by the left rear proportional flow valve pilot valve 6 to open at the maximum opening, and the right rear drive module 1 drives the right rear wheel 9 to reverse at full speed;

[0036] When the right rear wheel 9 and the left rear wheel 10 need to be forward at the same time but at different speeds, the pump body 7 is forward, the right rear proportional flow valve pilot valve 4 and the left rear proportional flow valve pilot valve 6 can be adjusted to any opening, hydraulic oil flows from the first oil port of the pump body 7 to the first oil port of the right rear proportional flow valve 3 and the first oil port of the left rear proportional flow valve 5 respectively, hydraulic oil flows from the second oil port of the right rear proportional flow valve 3 to the first oil port of the right rear drive module 1, and from the second oil port of the left rear proportional flow valve 5 to the first oil port of the left rear drive module 2, and drives the right rear drive module 1 to drive the right rear wheel 9 to forward, and the left rear drive module 2 to drive the left rear wheel 10 to forward, and the speeds of the left rear wheel 10 and the right rear wheel 9 are different, at the same time, hydraulic oil flows from the second oil port of the right rear drive module 1 and the second oil port of the left rear drive module 2 to the second oil port of the pump body 7, this situation can be used to realize the left rear wheel 10 and the right rear wheel 9 to select different speeds to forward and escape;

[0037] When the right rear wheel 9 and the left rear wheel 10 need to be reversed at the same time but at different speeds: the pump body 7 is reversed, the right rear proportional flow valve pilot valve 4 and the left rear proportional flow valve pilot valve 6 can be adjusted to any opening, the hydraulic oil flows to the second oil port of the left rear drive module 2 and the second oil port of the right rear drive module 1 through the second oil port of the pump body 7, the right rear drive module 1 drives the right rear wheel 9 to reverse, and the left rear drive module 2 drives the left rear wheel 10 to reverse, and the rotation speeds of the left rear wheel 10 and the right rear wheel 9 are different, at the same time, the hydraulic oil flows to the first oil port of the pump body 7 through the first oil port of the left rear proportional flow valve 5 and the first oil port of the right rear proportional flow valve 3, and this case can be used to realize the different speeds of the left rear wheel 10 and the right rear wheel 9 in reverse.

[0038] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for the general skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A harvester get-out-of-trouble hydraulic control system characterized by: The right rear drive module, the left rear drive module, the right rear proportional flow valve, the right rear proportional flow valve pilot valve, the left rear proportional flow valve, the left rear proportional flow valve pilot valve and the pump body, the first oil port of the right rear proportional flow valve and the first oil port of the left rear proportional flow valve are connected with the first oil port of the pump body respectively, the second oil port of the right rear proportional flow valve is connected with the first oil port of the right rear drive module, the second oil port of the left rear proportional flow valve is connected with the first oil port of the left rear drive module, the second oil port of the right rear drive module and the second oil port of the left rear drive module are connected with the second oil port of the pump body respectively, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve, the right rear drive module is used for driving the right rear wheel to rotate, and the left rear drive module is used for driving the left rear wheel to rotate; When the right rear wheel needs to be driven to advance alone, the pump body is driven to rotate, the right rear proportional flow valve pilot valve is opened at the maximum opening degree, hydraulic oil flows to the first oil port of the right rear proportional flow valve through the first oil port of the pump body, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve and is opened at the maximum opening degree, then hydraulic oil flows to the first oil port of the right rear drive module through the second oil port of the right rear proportional flow valve, the right rear drive module drives the right rear wheel to rotate at the maximum speed, and simultaneously, hydraulic oil flows to the second oil port of the pump body through the second oil port of the right rear drive module; When the right rear wheel needs to be driven to reverse alone, the pump body is driven to rotate reversely, the right rear proportional flow valve pilot valve is opened at the maximum opening degree, hydraulic oil flows to the second oil port of the right rear drive module through the second oil port of the pump body, and the right rear drive module is driven to rotate reversely, hydraulic oil flows to the first oil port of the pump body through the right rear proportional flow valve, simultaneously, the right rear proportional flow valve is controlled by the right rear proportional flow valve pilot valve and is opened at the maximum opening degree, and the right rear drive module drives the right rear wheel to rotate reversely at the maximum speed; When the left rear wheel needs to be driven to advance alone, the pump body is driven to rotate, the left rear proportional flow valve pilot valve is opened at the maximum opening degree, hydraulic oil flows to the first oil port of the left rear proportional flow valve through the first oil port of the pump body, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve and is opened at the maximum opening degree, then hydraulic oil flows to the first oil port of the left rear drive module through the second oil port of the left rear proportional flow valve, the left rear drive module drives the left rear wheel to rotate at the maximum speed, and simultaneously, hydraulic oil flows to the second oil port of the pump body through the second oil port of the left rear drive module. When the left rear wheel needs to be reversed alone, the pump body is reversed, the left rear proportional flow valve pilot valve is opened at maximum opening, hydraulic oil flows to the second oil port of the left rear drive module through the second oil port of the pump body, and drives the left rear drive module to reverse, hydraulic oil flows to the first oil port of the pump body through the left rear proportional flow valve, at the same time, the left rear proportional flow valve is controlled by the left rear proportional flow valve pilot valve to open at maximum opening, and the right rear drive module drives the right rear wheel to reverse at full speed; When the right rear wheel and the left rear wheel need to be forward at the same time but at different speeds, the pump body is forward, the right rear proportional flow valve pilot valve and the left rear proportional flow valve pilot valve can be adjusted to any opening, hydraulic oil flows to the first oil port of the right rear proportional flow valve and the first oil port of the left rear proportional flow valve through the first oil port of the pump body respectively, hydraulic oil flows to the first oil port of the right rear drive module through the second oil port of the right rear proportional flow valve, and flows to the first oil port of the left rear drive module through the second oil port of the left rear proportional flow valve, and drives the right rear drive module to drive the right rear wheel to forward, and the left rear drive module to drive the left rear wheel to forward, and the rotating speeds of the left rear wheel and the right rear wheel are different, at the same time, hydraulic oil flows to the second oil port of the pump body through the second oil port of the right rear drive module and the second oil port of the left rear drive module; When the right rear wheel and the left rear wheel need to be reversed at the same time but at different speeds, the pump body is reversed, the right rear proportional flow valve pilot valve and the left rear proportional flow valve pilot valve can be adjusted to any opening, hydraulic oil flows to the second oil port of the left rear drive module and the second oil port of the right rear drive module through the second oil port of the pump body respectively, the right rear drive module drives the right rear wheel to reverse, and the left rear drive module drives the left rear wheel to reverse, and the rotating speeds of the left rear wheel and the right rear wheel are different, at the same time, hydraulic oil flows to the first oil port of the pump body through the first oil port of the left rear proportional flow valve and the first oil port of the right rear proportional flow valve.

2. The harvester escape hydraulic control system of claim 1, wherein: The right rear drive module is a right rear drive motor; the left rear drive module is a left rear drive motor.

3. The harvester escape hydraulic control system of claim 1, wherein: The pump body is a closed pump.

4. The harvester escape hydraulic control system of claim 1, wherein: The drain port of the right rear proportional flow valve and the drain port of the left rear proportional flow valve can be communicated to return oil. The pump body is a closed pump. The drain port of the right rear proportional flow valve and the drain port of the left rear proportional flow valve can be communicated to return oil.

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