CN214061766U - Hydraulic system for realizing electric control of loader work - Google Patents
Hydraulic system for realizing electric control of loader work Download PDFInfo
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- CN214061766U CN214061766U CN202023003274.6U CN202023003274U CN214061766U CN 214061766 U CN214061766 U CN 214061766U CN 202023003274 U CN202023003274 U CN 202023003274U CN 214061766 U CN214061766 U CN 214061766U
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Abstract
A hydraulic system for realizing electric control of the working of a loader comprises a pilot oil source valve, a pilot valve and a multi-way reversing valve, wherein the pilot oil source valve is connected with an electromagnetic reversing valve, the electromagnetic reversing valve is provided with an oil inlet, a right oil outlet and a left oil outlet, the oil inlet is connected with the pilot oil source valve, the right oil outlet is connected with the pilot valve, the left oil outlet is connected with an electric proportional pressure reducing valve bank, and the electric proportional pressure reducing valve bank is connected with the multi-way reversing valve; due to the adoption of the technical scheme, the hydraulic system can be manually controlled in a non-electrified state; under the on-state, but manual control became invalid, hydraulic system electric control establishes ties automatically controlled return circuit on the basis of originally leading the manipulation oil circuit, has realized equipment's electric control, just the technical scheme of the utility model simple structure, it is with low costs, easily realize.
Description
Technical Field
The utility model relates to a loader field especially relates to a hydraulic system of loader.
Background
During the operation of the loader, the action of the loader is to control the valve rod of the multi-way reversing valve to change positions through the pilot valve, so that the reversing of pressure oil is realized, the oil flows to different oil cylinder cavities, the oil cylinders are pushed to act, the moving arm is lifted or descended, and the bucket is collected or dumped, so that the loader works. In the process, the pilot valve is a pilot control source, and various actions are finally realized by manually operating the pilot valve.
The prior art has the defect that only manual pilot control can be carried out, and electric control cannot be carried out.
Disclosure of Invention
The utility model aims to solve the technical problem that a realize automatically controlled hydraulic system of loader work is provided, improve on current manual guide controls hydraulic system's basis, make the loader realize electric control.
In order to solve the technical problem, the technical scheme of the utility model is that: a hydraulic system for realizing electric control of the working of a loader comprises a pilot oil source valve, a pilot valve and a multi-way reversing valve, wherein the pilot oil source valve is connected with an electromagnetic reversing valve, the electromagnetic reversing valve is provided with an oil inlet, a right oil outlet and a left oil outlet, the oil inlet is connected with the pilot oil source valve, the right oil outlet is connected with the pilot valve, the left oil outlet is connected with an electric proportional pressure reducing valve bank, and the electric proportional pressure reducing valve bank is connected with the multi-way reversing valve; an electric control loop is connected in series in the original manual pilot control hydraulic system, so that the electric control of the working device is realized.
As a preferred technical scheme, the electric proportional pressure reducing valve group comprises four same electric proportional pressure reducing valves, a first oil inlet, a second oil inlet and an oil outlet are arranged on each electric proportional pressure reducing valve, the first oil inlet is connected with a pilot valve, the second oil inlet is connected with an electromagnetic reversing valve, and the four oil outlets are respectively connected with a multi-way reversing valve; an electric control loop is connected in series in the hydraulic system, so that electric control is realized.
According to the preferable technical scheme, when the electromagnetic directional valve is not electrified, the right oil outlet is normally open, and when the electric proportional pressure reducing valve is not electrified, the first oil inlet is normally open; the scheme ensures that the hydraulic system is in manual pilot control when not electrified and is in electric control when electrified.
As a preferred technical scheme, the pilot valve comprises a boom pilot valve and a bucket pilot valve, wherein the boom pilot valve and the bucket pilot valve share one valve body; the multi-way reversing valve comprises a movable arm descending guide port, a movable arm lifting guide port, a bucket collecting guide port and a bucket outward turning guide port.
As an improvement of the above technology, two interfaces of the movable arm pilot valve are respectively connected with first oil inlets of two electric proportional pressure reducing valves, and oil outlets of the two electric proportional pressure reducing valves are respectively connected with a movable arm descending pilot port and a movable arm lifting pilot port; two interfaces of the bucket pilot valve are respectively connected with first oil inlets of the other two electric proportional reducing valves, oil outlets of the other two electric proportional reducing valves are respectively connected with a bucket collecting pilot port and a bucket outward turning pilot port, and second oil inlets of the four electric proportional reducing valves are connected with left oil outlets of the electromagnetic reversing valve; electric control of the boom and the bucket is realized.
Due to the adoption of the technical scheme, the hydraulic system is manually controlled in a non-electrified state; under the on-state, but manual control became invalid, hydraulic system electric control establishes ties automatically controlled return circuit on the basis of originally leading the manipulation oil circuit, has realized equipment's electric control, just the technical scheme of the utility model simple structure, it is with low costs, easily realize.
Drawings
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
FIG. 1 is a schematic illustration of a loader hydraulic system that is now disclosed;
fig. 2 is a schematic structural diagram of the present invention;
in the figure: 1-a pilot oil source valve; 2-a pilot valve; 3-a multi-way reversing valve; 4, an electromagnetic directional valve; 41-an oil inlet; 42-right oil outlet; 43-left oil outlet; 5-electric proportional pressure reducing valve group; 51-electric proportional pressure reducing valve; 52-a first oil inlet; 53-a second oil inlet; 54-an oil outlet; 21-a boom pilot valve; 22-a bucket pilot valve; 31-boom lowering pilot port; 32-boom lift pilot port; 33-bucket closing guide port; 34-bucket evagination pilot port.
Detailed Description
In order to facilitate understanding of the present invention, the following description is made with reference to the embodiments and the accompanying drawings, and the description of the embodiments is not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may include, for example, electrical connections, communication between two elements, direct connection, and indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the loader hydraulic system is now disclosed, and for pilot operation, that is, by manually operating the operating lever of the pilot valve 2, the pilot oil pushes the spool of the multi-way directional valve 3 to move through the pilot valve 2, so as to implement the movement of the working device.
As shown in fig. 2, a hydraulic system for realizing electric control of loader operation includes a pilot oil source valve 1, a pilot valve 2 and a multi-way directional valve 3, the pilot oil source valve 1 is connected to an electromagnetic directional valve 4, the electromagnetic directional valve 4 is provided with an oil inlet 41, a right oil outlet 42 and a left oil outlet 43, the oil inlet 41 is connected to the pilot oil source valve 1, the right oil outlet 42 is connected to the pilot valve 2, the left oil outlet 43 is connected to an electric proportional pressure reducing valve group 5, and the electric proportional pressure reducing valve group 5 is connected to the multi-way directional valve 3.
The electro-proportional pressure reducing valve group 5 comprises four same electro-proportional pressure reducing valves 51, a first oil inlet 52, a second oil inlet 53 and oil outlets 54 are arranged on the electro-proportional pressure reducing valves 51, the first oil inlet 52 is connected with the pilot valve 2, the second oil inlet 53 is connected with the electromagnetic directional valve 4, and the four oil outlets 54 are respectively connected with the multi-way directional valve 3.
When the electromagnetic directional valve 4 is not electrified, the right oil outlet 42 is normally open, and when the electric proportional pressure reducing valve 51 is not electrified, the first oil inlet 52 is normally open.
The pilot valve 2 includes a boom pilot valve 21 and a bucket pilot valve 22, and the boom pilot valve 21 and the bucket pilot valve 22 share one valve body; the multi-way directional control valve 3 includes a boom-down pilot port 31, a boom-up pilot port 32, a bucket-in pilot port 33, and a bucket-out pilot port 34.
Two interfaces of the movable arm pilot valve 21 are respectively connected with first oil inlets 52 of two electric proportional reducing valves 51, and oil outlets 54 of the two electric proportional reducing valves 51 are respectively connected with the movable arm descending pilot port 31 and the movable arm lifting pilot port 32; two interfaces of the bucket pilot valve 22 are respectively connected with first oil inlets 52 of the other two electric proportional reducing valves 51, oil outlets 54 of the other two electric proportional reducing valves 51 are respectively connected with the bucket collecting pilot port 33 and the bucket outward turning pilot port 34, and second oil inlets 53 of the four electric proportional reducing valves 51 are connected with a left oil outlet 43 of the electromagnetic directional valve 4.
When the electromagnetic directional valve 4 is not powered on, the right oil outlet 42 of the electromagnetic directional valve 4 is normally opened, the pilot oil of the pilot oil source valve 1 flows out from the right oil outlet 42 and enters the pilot valve 2, and flows into the electro-proportional pressure reducing valve 51 through the pilot valve 2, at the moment, the first oil inlet 52 of the electro-proportional pressure reducing valve 51 is normally opened, the pilot oil enters the multi-way directional valve 3 through the first oil inlet 52, and the valve core is pushed to realize the movement of the working device.
When the electromagnetic directional valve is powered on, the pilot oil of the pilot oil source valve 1 flows out from the left oil outlet 43 of the electromagnetic directional valve 4, the electric proportional pressure reducing valve group 5 opens the second oil inlet 53 of the corresponding electric proportional pressure reducing valve 51 according to the received electric signal, and the pilot oil enters the multi-way directional valve 3 through the opened second oil inlet 53 to push the valve core to realize the movement of the working device. By supplying different currents to the electric proportional pressure reducing valve group 5, the electric proportional pressure reducing valve 51 has different pressures, the valve core has different opening degrees, and the flow rates of pilot oil flowing through the valve core are different, so that different action speeds are achieved.
The utility model discloses an improve prior art, realized loader movable arm and scraper bowl hydraulic system's manual pilot control and electric control optional use, for manual first arrival control when the valves of adding do not switch on, be electric control after the valves circular telegram, the user can select according to the work demand of self, and the improvement scheme is simple feasible, and is with low costs.
To sum up, the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.
Claims (5)
1. The utility model provides a realize automatically controlled hydraulic system of loader work, includes guide's oil supply valve (1), pilot valve (2) and multichannel switching-over valve (3), its characterized in that: the pilot oil source valve (1) is connected with the electromagnetic reversing valve (4), the electromagnetic reversing valve (4) is provided with an oil inlet (41), a right oil outlet (42) and a left oil outlet (43), the oil inlet (41) is connected with the pilot oil source valve (1), the right oil outlet (42) is connected with the pilot valve (2), the left oil outlet (43) is connected with the electric proportional pressure reducing valve bank (5), and the electric proportional pressure reducing valve bank (5) is connected with the multi-way reversing valve (3).
2. A hydraulic system for electrically controlling the operation of a loader according to claim 1, wherein: the electric proportional pressure reducing valve group (5) comprises four same electric proportional pressure reducing valves (51), a first oil inlet (52), a second oil inlet (53) and an oil outlet (54) are arranged on the electric proportional pressure reducing valves (51), the first oil inlet (52) is connected with the pilot valve (2), the second oil inlet (53) is connected with the electromagnetic directional valve (4), and the four oil outlets (54) are respectively connected with the multi-way directional valve (3).
3. A hydraulic system for electrically controlling the operation of a loader according to claim 2, wherein: when the electromagnetic directional valve (4) is not electrified, the right oil outlet (42) is normally opened, and when the electric proportional pressure reducing valve (51) is not electrified, the first oil inlet (52) is normally opened.
4. A hydraulic system for electrically controlling the operation of a loader according to claim 3, wherein: the pilot valve (2) comprises a movable arm pilot valve (21) and a bucket pilot valve (22), and the movable arm pilot valve (21) and the bucket pilot valve (22) share one valve body; the multi-way reversing valve (3) comprises a movable arm descending guide port (31), a movable arm lifting guide port (32), a bucket closing guide port (33) and a bucket outward turning guide port (34).
5. The hydraulic system for realizing the electric control of the loader operation according to claim 4, wherein: two interfaces of the movable arm pilot valve (21) are respectively connected with first oil inlets (52) of two electric proportional reducing valves (51), and oil outlets (54) of the two electric proportional reducing valves (51) are respectively connected with a movable arm descending pilot port (31) and a movable arm lifting pilot port (32); two interfaces of the bucket pilot valve (22) are respectively connected with first oil inlets (52) of the other two electric proportional reducing valves (51), oil outlets (54) of the other two electric proportional reducing valves (51) are respectively connected with a bucket collecting bucket pilot port (33) and a bucket outward turning pilot port (34), and second oil inlets (53) of the four electric proportional reducing valves (51) are connected with left oil outlets (43) of the electromagnetic reversing valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003274.6U CN214061766U (en) | 2020-12-15 | 2020-12-15 | Hydraulic system for realizing electric control of loader work |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003274.6U CN214061766U (en) | 2020-12-15 | 2020-12-15 | Hydraulic system for realizing electric control of loader work |
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| CN214061766U true CN214061766U (en) | 2021-08-27 |
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| CN202023003274.6U Active CN214061766U (en) | 2020-12-15 | 2020-12-15 | Hydraulic system for realizing electric control of loader work |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757203A (en) * | 2021-09-13 | 2021-12-07 | 徐工集团工程机械股份有限公司科技分公司 | Loader electric control hydraulic system and loader |
| CN114087249A (en) * | 2021-11-18 | 2022-02-25 | 国能神东煤炭集团有限责任公司 | Electro-hydraulic pressure control system and control method |
-
2020
- 2020-12-15 CN CN202023003274.6U patent/CN214061766U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757203A (en) * | 2021-09-13 | 2021-12-07 | 徐工集团工程机械股份有限公司科技分公司 | Loader electric control hydraulic system and loader |
| CN113757203B (en) * | 2021-09-13 | 2022-04-15 | 徐工集团工程机械股份有限公司科技分公司 | Loader electric control hydraulic system and loader |
| CN114087249A (en) * | 2021-11-18 | 2022-02-25 | 国能神东煤炭集团有限责任公司 | Electro-hydraulic pressure control system and control method |
| CN114087249B (en) * | 2021-11-18 | 2023-05-26 | 国能神东煤炭集团有限责任公司 | Electrohydraulic pressure control system and control method |
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Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
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