CN114321033A - Novel free wheel control device and control method - Google Patents
Novel free wheel control device and control method Download PDFInfo
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- CN114321033A CN114321033A CN202111673483.8A CN202111673483A CN114321033A CN 114321033 A CN114321033 A CN 114321033A CN 202111673483 A CN202111673483 A CN 202111673483A CN 114321033 A CN114321033 A CN 114321033A
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Abstract
A novel free wheel control device comprises a free wheel, a hydraulic motor and a hydraulic pump, wherein the hydraulic motor is used for controlling the free wheel, the hydraulic pump is used for controlling the hydraulic motor, a high pressure port of the hydraulic pump is communicated with a high pressure cavity of the hydraulic motor through a high pressure pipeline, a low pressure port of the hydraulic pump is communicated with a low pressure cavity of the hydraulic motor through a low pressure pipeline, and a free pipeline is communicated between the high pressure pipeline and the low pressure pipeline; the device still includes the free valves, and the free valves includes high pressure control valve, low pressure control valve and free control valve, and the high pressure control valve is installed on high-pressure pipeline, and the low pressure control valve is installed on low-pressure pipeline, and free control valve installs on free pipeline. This application can lead to and make the walking motor can carry out automatic switch-over between action wheel and follow driving wheel to eliminate the poor tire in vehicle driving process road surface and skid, the not enough tunnel potential safety hazard that occupies of power, and then guarantee that the vehicle can not appear the wheel condition of skidding at the in-process of traveling, improve vehicle adaptation performance.
Description
Technical Field
The invention relates to the technical field of coal mine underground continuous mining carriers, in particular to a novel free wheel control device and a control method of the novel free wheel control device.
Background
Traditional colliery is heavy carrier in pit does not have automatic freewheel auto-change over device, because colliery is colliery air humidity great in the pit, the tunnel road surface of traveling is poor, and light is not enough, and the noise is great, and it is great to adopt the transport car overall dimension even in addition, and the during operation driver has the sight blind area, therefore often breaks down in the pit very easily, occupies the road in the pit, influences other vehicles current.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a novel free wheel control device which can ensure that a slipping tire of a vehicle can normally run by switching the slipping tire into a free wheel.
Another object of the present invention is to provide a control method of the above-described novel freewheel control device.
The technical problem to be solved by the present invention is achieved by the following technical means. The invention relates to a novel free wheel control device, which comprises a free wheel, a hydraulic motor and a hydraulic pump, wherein the hydraulic motor is used for controlling the free wheel;
the device still includes the free valves, and the free valves includes high pressure control valve, low pressure control valve and free control valve, and the high pressure control valve is installed on high-pressure pipeline, and the low pressure control valve is installed on low-pressure pipeline, and free control valve installs on free pipeline.
The technical problem to be solved by the present invention can be further solved by the following technical solution, wherein for the above-mentioned novel freewheel control method, the high-pressure control valve and the low-pressure control valve are both linked with the freewheel control valve.
The technical problem to be solved by the present invention can be further solved by the following technical solution, wherein for the above-mentioned novel free wheel control method, the hydraulic pump is a closed pump.
The technical problem to be solved by the present invention can be further solved by the following technical solution, in the above-mentioned novel freewheel control method, the free pipe is arranged at a side close to the hydraulic motor, and the high-pressure control valve and the low-pressure control valve are arranged at a side close to the hydraulic pump.
The technical problem to be solved by the present invention can be further solved by the following technical solutions, and for the above-mentioned novel freewheel control device, a novel freewheel control method includes the following contents:
(1) when the working condition is heavy load, the high pressure control valve and the low pressure control valve are opened, the free control valve is closed, high pressure oil flows into a high pressure cavity of the hydraulic motor from a high pressure port of the hydraulic pump through a high pressure pipeline, low pressure oil in a low pressure cavity of the hydraulic motor flows into a low pressure port of the hydraulic pump through a low pressure pipeline, the hydraulic motor normally runs to generate driving force, and the free wheel is used as a driving wheel;
(2) when the hydraulic motor is in a no-load working condition, the high-pressure control valve and the low-pressure control valve are closed, the free control valve is opened, the high-pressure cavity of the hydraulic motor is communicated with the low-pressure cavity of the hydraulic motor through the free pipeline to form a closed loop, the hydraulic motor is in a free state, and the free wheel is used as a driven wheel.
The technical problem to be solved by the invention can be further realized by the following technical scheme that for the novel free wheel control method, when the free wheel control method is used for skidding, the high-pressure control valve and the low-pressure control valve are closed, the free control valve is opened, the high-pressure cavity of the hydraulic motor is communicated with the low-pressure cavity of the hydraulic motor through the free pipeline to form a closed loop, so that the hydraulic motor is in a free state, the skidding wheel is switched to the free state, and the vehicle can be ensured to rapidly run out.
Compared with the prior art, the invention can control the high-pressure oil port and the low-pressure oil port of the walking motor, so that the walking motor can be automatically switched between the driving wheel and the driven wheel, thereby eliminating the potential safety hazard that the road surface is poor in tire slip and the power is insufficient to occupy a roadway in the driving process of the vehicle, further ensuring that the wheel slip condition of the vehicle cannot occur in the driving process of the vehicle, and improving the adaptive use performance of the vehicle.
Drawings
Fig. 1 is a hydraulic schematic of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a novel free wheel control device comprises a free wheel, a hydraulic motor for controlling the free wheel and a hydraulic pump for controlling the hydraulic motor, wherein a high pressure port of the hydraulic pump is communicated with a high pressure cavity of the hydraulic motor through a high pressure pipeline, a low pressure port of the hydraulic pump is communicated with a low pressure cavity of the hydraulic motor through a low pressure pipeline, and a free pipeline is communicated between the high pressure pipeline and the low pressure pipeline; the free wheel is used for being installed on a vehicle for use, particularly a coal mine underground continuous mining carrier, the hydraulic motor is used for driving the free wheel to provide power for the free wheel, the hydraulic pump is used for driving the hydraulic motor to provide power for the hydraulic motor, and specifically, the high-pressure pipeline and the low-pressure pipeline are matched with a high-pressure cavity and a low-pressure cavity of the hydraulic motor, and the hydraulic motor is driven to act through hydraulic oil;
the device still includes the free valves, and the free valves includes high pressure control valve, low pressure control valve and free control valve, and the high pressure control valve is installed on high-pressure pipeline, and the low pressure control valve is installed on low-pressure pipeline, and free control valve installs on free pipeline. The free valve group is used for controlling the on-off of a high-pressure pipeline through a high-pressure control valve, controlling the on-off of a low-pressure pipeline through a low-pressure control valve, controlling the on-off of the free pipeline through the free control valve, and further controlling the free wheel through a hydraulic motor, so that the free wheel can be switched between the driving wheel and the driven wheel, and the better matched wheel can be conveniently operated normally.
The high-pressure control valve and the low-pressure control valve are both linked with the free control valve, the high-pressure control valve and the low-pressure control valve are opened and closed at the same time, the free control valves are just opposite, when the high-pressure control valve and the low-pressure control valve are opened at the same time, the free control valves are closed, and when the high-pressure control valve and the low-pressure control valve are closed at the same time, the free control valves are opened.
The hydraulic pump is a closed pump, the installation space occupied by the closed pump is small, the hydraulic oil damage is low, the cost is reduced, and the use is convenient.
The free pipeline is arranged on one side close to the hydraulic motor, and the high-pressure control valve and the low-pressure control valve are arranged on one side close to the hydraulic pump, so that the flowing length of hydraulic oil in the hydraulic motor is reduced when the hydraulic motor needs to be switched into a free state, and the hydraulic motor can rapidly reach the free state conveniently.
A novel free wheel control method comprises the following steps that the number of driving wheels is required to be switched to change the running speed according to the running speed of a vehicle, and the vehicle has two basic working conditions when the vehicle is used for improving the working efficiency according to the use requirement of the vehicle on a coal mine:
(1) when the working condition is heavy load, the high-pressure control valve and the low-pressure control valve are opened, the free control valve is closed, high-pressure oil flows into a high-pressure cavity of the hydraulic motor from a high-pressure port of the hydraulic pump through a high-pressure pipeline, low-pressure oil in a low-pressure cavity of the hydraulic motor flows into a low-pressure port of the hydraulic pump through a low-pressure pipeline, the hydraulic motor is enabled to normally run to generate driving force, and the free wheel is used as a driving wheel, so that the driving force which is large enough is improved;
(2) when the vehicle is in a no-load working condition, the high-pressure control valve and the low-pressure control valve are closed, the free control valve is opened, the high-pressure cavity of the hydraulic motor is communicated with the low-pressure cavity of the hydraulic motor through the free pipeline to form a closed loop, so that the hydraulic motor is in a free state, and the free wheel is used as a driven wheel, so that the running speed of the whole vehicle is increased;
secondly, when skidding, close high-pressure control valve and low-pressure control valve, open the free control valve, the high-pressure chamber of hydraulic motor passes through the free pipeline and communicates with the low-pressure chamber of hydraulic motor and forms a closed loop, makes the hydraulic motor become free state, switches into free state with the wheel that skids, guarantees that the vehicle is gone out fast to guarantee the safety and the production of colliery work.
Claims (6)
1. A novel free wheel control device is characterized in that: the hydraulic pump is characterized by comprising a free wheel, a hydraulic motor for controlling the free wheel and a hydraulic pump for controlling the hydraulic motor, wherein a high pressure port of the hydraulic pump is communicated with a high pressure cavity of the hydraulic motor through a high pressure pipeline, a low pressure port of the hydraulic pump is communicated with a low pressure cavity of the hydraulic motor through a low pressure pipeline, and a free pipeline is also communicated between the high pressure pipeline and the low pressure pipeline;
the device still includes the free valves, and the free valves includes high pressure control valve, low pressure control valve and free control valve, and the high pressure control valve is installed on high-pressure pipeline, and the low pressure control valve is installed on low-pressure pipeline, and free control valve installs on free pipeline.
2. The novel freewheel control device according to claim 1 characterized in that: and the high-pressure control valve and the low-pressure control valve are both linked with the free control valve.
3. The novel freewheel control device according to claim 1 characterized in that: the hydraulic pump is a closed pump.
4. The novel freewheel control device according to claim 1 characterized in that: the free pipeline is arranged on one side close to the hydraulic motor, and the high-pressure control valve and the low-pressure control valve are arranged on one side close to the hydraulic pump.
5. A novel free wheel control method is characterized in that: the method uses the novel freewheel control device according to any of claims 1-4, whose contents are as follows:
(1) when the working condition is heavy load, the high pressure control valve and the low pressure control valve are opened, the free control valve is closed, high pressure oil flows into a high pressure cavity of the hydraulic motor from a high pressure port of the hydraulic pump through a high pressure pipeline, low pressure oil in a low pressure cavity of the hydraulic motor flows into a low pressure port of the hydraulic pump through a low pressure pipeline, the hydraulic motor normally runs to generate driving force, and the free wheel is used as a driving wheel;
(2) when the hydraulic motor is in a no-load working condition, the high-pressure control valve and the low-pressure control valve are closed, the free control valve is opened, the high-pressure cavity of the hydraulic motor is communicated with the low-pressure cavity of the hydraulic motor through the free pipeline to form a closed loop, the hydraulic motor is in a free state, and the free wheel is used as a driven wheel.
6. The novel freewheel control method according to claim 5 characterized in that: when the vehicle skids, the high-pressure control valve and the low-pressure control valve are closed, the free control valve is opened, the high-pressure cavity of the hydraulic motor is communicated with the low-pressure cavity of the hydraulic motor through the free pipeline to form a closed loop, so that the hydraulic motor becomes a free state, the skidding wheel is switched to the free state, and the vehicle can be ensured to run out quickly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673483.8A CN114321033A (en) | 2021-12-31 | 2021-12-31 | Novel free wheel control device and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673483.8A CN114321033A (en) | 2021-12-31 | 2021-12-31 | Novel free wheel control device and control method |
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| CN114321033A true CN114321033A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111673483.8A Pending CN114321033A (en) | 2021-12-31 | 2021-12-31 | Novel free wheel control device and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909359A (en) * | 2022-07-14 | 2022-08-16 | 湖南创远高新机械有限责任公司 | Closed hydraulic system and major diameter raise boring machine who uses thereof |
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2021
- 2021-12-31 CN CN202111673483.8A patent/CN114321033A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909359A (en) * | 2022-07-14 | 2022-08-16 | 湖南创远高新机械有限责任公司 | Closed hydraulic system and major diameter raise boring machine who uses thereof |
| CN114909359B (en) * | 2022-07-14 | 2022-11-15 | 湖南创远高新机械有限责任公司 | Closed hydraulic system and major diameter raise boring machine who uses thereof |
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