CN212615666U - Hydraulic control system - Google Patents
Hydraulic control system Download PDFInfo
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- CN212615666U CN212615666U CN202020717208.6U CN202020717208U CN212615666U CN 212615666 U CN212615666 U CN 212615666U CN 202020717208 U CN202020717208 U CN 202020717208U CN 212615666 U CN212615666 U CN 212615666U
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Abstract
The utility model discloses a hydraulic control system, include: a drive motor; the oil pump is fixedly connected with an output shaft of the driving motor and is provided with an input port and an output port; the oil tank stores hydraulic oil and is at least communicated with the input port; the reversing valve is provided with a first state and a second state, the reversing valve is provided with a first oil port and a second oil port, and the first oil port is communicated with the oil tank; when the reversing valve is in a first state, the first oil port is communicated with the second oil port; when the reversing valve is in a second state, the first oil port is not communicated with the second oil port; the hydraulic oil cylinder comprises a cylinder body and a piston rod which is telescopically arranged in the cylinder body, the cylinder body is suitable for being communicated with the second oil port to drive the piston rod to reciprocate in the cylinder body, and the second oil port forms a first node between the oil pump and the cylinder body.
Description
Technical Field
The utility model relates to the field of mechanical equipment, especially, relate to a hydraulic control system.
Background
The hydraulic oil cylinder has a telescopic function, and the cylinder body is controlled to jack up or fall back through the pressure of hydraulic oil. Moving parts in the machine may be raised or lowered, for example, in a motor vehicle compartment dump. In the prior art, a hydraulic system is complex, inconvenient to control, poor in reliability and high in maintenance cost.
Disclosure of Invention
The utility model discloses aim at solving one of the problem that above-mentioned prior art exists, provide a hydraulic control system, this hydraulic control system simple structure controls the convenience, and the reliability is high, and maintenance cost is low.
In order to achieve the above object, the present invention provides a hydraulic control system, including:
a drive motor;
the oil pump is fixedly connected with an output shaft of the driving motor and is provided with an input port and an output port;
the oil tank stores hydraulic oil and is at least communicated with the input port;
the reversing valve is provided with a first state and a second state, the reversing valve is provided with a first oil port and a second oil port, and the first oil port is communicated with the oil tank;
when the reversing valve is in a first state, the first oil port is communicated with the second oil port; when the reversing valve is in a second state, the first oil port is not communicated with the second oil port;
the hydraulic oil cylinder comprises a cylinder body and a piston rod which is telescopically arranged in the cylinder body, the cylinder body is suitable for being communicated with the second oil port so as to drive the piston rod to reciprocate in the cylinder body, and the second oil port forms a first node between the oil pump and the cylinder body;
when the hydraulic oil cylinder needs to extend and move, the driving motor acts, and the reversing valve is in a second state; when the hydraulic oil cylinder needs to retract, the driving motor stops acting, and the reversing valve is in a first state.
In the technical scheme, when the hydraulic oil cylinder needs to do extension movement, the reversing valve is in a second state, the driving motor works to drive the oil pump to pump hydraulic oil in the oil tank, and the hydraulic oil flows out of the oil tank, enters the oil pump through the input port, flows out of the output port and enters the hydraulic oil cylinder; when the hydraulic oil cylinder needs to do contraction movement, the reversing valve is in a first state, the driving motor stops working, and hydraulic oil in the hydraulic oil cylinder flows back to the oil tank through the second port and the first port in sequence; the hydraulic control system is simple in structure, convenient to operate and control, high in reliability and low in maintenance cost.
In addition, according to the utility model discloses a hydraulic control system can also have following technical characterstic:
in an example of the present invention, the present invention further includes:
the check valve is connected between the first node and the oil pump, so that the hydraulic oil flows towards the direction of the hydraulic oil cylinder from the oil pump.
In an example of the present invention, the present invention further includes:
the overflow valve is provided with an inlet end and an outlet end, the inlet end is communicated with the cylinder body, the outlet end is communicated with the oil tank,
wherein the inlet end forms a second node (SD) between the oil pump and the check valve;
and when the pressure value of the output port of the oil pump is greater than the preset value of the overflow valve, the inlet end is communicated with the outlet end.
In an example of the present invention, the present invention further includes:
a steering handle configured to be coupled to the directional valve for driving the directional valve to switch between a first state and a second state;
when the hydraulic oil cylinder needs to extend and move, an operating handle is controlled to enable the reversing valve to be in a second state; when the hydraulic oil cylinder needs to retract, the operating handle is operated to enable the reversing valve to be in a first state.
In an example of the present invention, the direction valve is a two-position two-way solenoid valve.
In an example of the present invention, the present invention further includes:
the speed reducer comprises an input shaft and an output shaft, the input shaft is connected with the driving motor, and the output shaft is connected with the oil pump.
In an example of the present invention, the present invention further includes:
a filter disposed between the oil tank and the oil pump.
In an example of the present invention, the present invention further includes:
the controller is electrically connected with the reversing valve, the driving motor and the overflow valve and is used for controlling the reversing valve to be switched between the first state and the second state;
when the hydraulic oil cylinder needs to extend and move, the controller controls the driving motor to act and controls the reversing valve to be in a second state; when the hydraulic oil cylinder needs to retract, the controller controls the driving motor to stop acting and controls the reversing valve to be in a first state.
In an example of the present invention, the present invention further includes:
the detection device is used for detecting the hydraulic value of the hydraulic oil cylinder, and when the detection device detects that the hydraulic oil in the hydraulic oil cylinder reaches a set value, the oil pump is controlled to stop working.
In an example of the present invention, the detection device is a pressure detection device.
The following description of the preferred embodiments of the present invention will be made in detail with reference to the accompanying drawings, so that the features and advantages of the invention can be easily understood.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control system according to an embodiment of the present invention.
Description of reference numerals:
a hydraulic control system 100;
a drive motor 110;
an oil pump 120;
an input port 121;
an output port 122;
a fuel tank 130;
a direction change valve 140;
a first oil port 141;
a second oil port 142;
a hydraulic ram 150;
a relief valve 160;
an inlet end 161;
an outlet end 162;
a pilot terminal 163;
a check valve 170;
a filter 180;
a detection device 190;
a first node FD;
a second node SD;
and a third node TD.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The following description is provided with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the invention as defined by the claims. It includes various specific details to assist in this understanding, but these details should be construed as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that changes and modifications may be made to the various embodiments described herein without departing from the scope of the present invention, which is defined by the following claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
It will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims.
Although expressions such as "1 st", "2 nd", "first" and "second" may be used to describe the respective elements of the present invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one element from another.
References herein to "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships, which may change accordingly when the absolute position of the object being described changes.
The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular references include plural references unless there is a significant difference in context, scheme or the like between them.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
According to the utility model discloses a hydraulic control system 100, include:
a drive motor 110;
an oil pump 120, the oil pump 120 being fixedly coupled to an output shaft of the driving motor 110, and the oil pump 120 having an input port 121 and an output port 122;
the oil tank 130 stores hydraulic oil inside, and is at least communicated with the input port 121;
a direction change valve 140, the direction change valve 140 having a first state and a second state, the direction change valve 140 having a first oil port 141 and a second oil port 142, the first oil port 141 being in communication with the oil tank 130;
when the reversing valve 140 is in the first state, the first oil port 141 is communicated with the second oil port 142; when the direction valve 140 is in the second state, the first oil port 141 is not communicated with the second oil port 142;
a hydraulic cylinder 150 including a cylinder body and a piston rod telescopically disposed in the cylinder body, the cylinder body being adapted to communicate with the second oil port 142 to drive the piston rod to reciprocate in the cylinder body, wherein the second oil port 142 forms a first node FD between the oil pump 120 and the cylinder body;
when the hydraulic oil cylinder 150 needs to extend, the driving motor 110 acts, and the reversing valve 140 is in a second state; when the retraction of the hydraulic cylinder 150 is required, the driving motor 110 stops and the direction valve 140 is in the first state.
Specifically, when the hydraulic cylinder 150 needs to make an extending movement, the reversing valve 140 is in the second state, the driving motor 110 operates to drive the oil pump 120 to pump the hydraulic oil in the oil tank 130, the hydraulic oil flows out of the oil tank 130, enters the oil pump 120 through the input port 121, flows out of the output port 122, and enters the hydraulic cylinder 150; when the hydraulic oil cylinder 150 needs to do contraction movement, the reversing valve 140 is in a first state, the driving motor 110 stops working, and hydraulic oil in the hydraulic oil cylinder 150 flows back to the oil tank 130 through the second port and the first port in sequence; the hydraulic control system 100 is simple in structure, convenient to operate and control, high in reliability and low in maintenance cost.
In an example of the present invention, the present invention further includes:
and the check valve 170 is connected between the first node FD and the oil pump 120, so that the hydraulic oil flows from the oil pump 120 to the hydraulic oil cylinder 150, and thus the hydraulic oil in the cylinder body cannot be guided between the oil pump 120 and the first node FD. An on-off valve may be disposed between the first node FD and the oil pump 120, and when pressure relief is required, the on-off valve is controlled to be turned off and the direction valve 140 is controlled to be in the first state.
In an example of the present invention, the present invention further includes:
a relief valve 160 having an inlet end 161 and an outlet end 162, the inlet end 161 communicating with the cylinder, the outlet end 162 communicating with the tank 130,
wherein the inlet port 161 forms a second node SD between the oil pump 120 and the check valve 170;
when the pressure value of the output port 122 of the oil pump 120 is greater than the preset value of the relief valve 160, the inlet end 161 is communicated with the outlet end 162.
That is to say, the overflow valve 160 is used for adjusting the pressure of the hydraulic control system 100, and when the output port 122 of the oil pump 120 is greater than the preset value of the overflow valve 160, the overflow valve 160 is conducted, so as to perform the function of pressure relief protection; for example, when hydraulic cylinder 150 is in a fully extended state, and the pressure continues to increase at this time, overflow valve 160 may be turned on to protect hydraulic control system 100, and overflow valve 160 may not be turned on in a general situation, that is, the preset value of overflow valve 160 is greater than the normal working pressure of hydraulic cylinder 150;
it is worth noting that the relief valve further comprises a pilot terminal 163, said pilot terminal 163 being connected between the check valve 170 and the first node FD and forming a third node TD; when the pilot end 163 detects that the pressure between the hydraulic oil cylinder 150 and the check valve 170 is greater than the preset value of the relief valve 160, the inlet end 161 and the outlet end 162 are communicated for relief.
In an example of the present invention, the present invention further includes:
a joystick configured to be coupled to the direction valve 140 for driving the direction valve 140 to switch between a first state and a second state;
when the hydraulic oil cylinder 150 needs to extend, the operation handle is operated to enable the reversing valve 140 to be in a second state; when retraction of the hydraulic ram 150 is required, the operating handle is manipulated to place the directional valve 140 in the first state.
That is, manual adjustment of the directional valve 140 may be accomplished by operating the handle so that the directional valve 140 can be toggled between the first state and the second state. Preferably, the directional valve 140 is a two-position, two-way solenoid valve.
In an example of the present invention, the present invention further includes:
a decelerator including an input shaft coupled with the driving motor 110 and an output shaft coupled with the oil pump 120; the rotation speed of the driving motor 110 can be reduced to suit the rotation speed condition of the oil pump 120 by providing a speed reducer.
In an example of the present invention, the present invention further includes:
a filter 180, the filter 180 being disposed between the oil tank 130 and the oil pump 120; because mechanical system can produce impurity in the operation process repeatedly, for example, metal fillings etc. and these impurity can accelerate mechanical structure's wearing and tearing in mechanical system, can filter the impurity among the hydraulic system through setting up filter 180, make the hydraulic oil that flows in the system cleaner, do benefit to extension hydraulic system's life.
In an example of the present invention, the present invention further includes:
a controller electrically connected to the direction switching valve 140 and the driving motor 110 for controlling the direction switching valve 140 to switch between the first state and the second state;
when the hydraulic oil cylinder 150 needs to extend, the controller controls the driving motor 110 to act and controls the reversing valve 140 to be in a second state; when the hydraulic oil cylinder 150 needs to retract, the controller controls the driving motor 110 to stop acting and controls the reversing valve 140 to be in a first state;
the driving motor 110 and the reversing valve 140 can be conveniently adjusted by the controller, so that the hydraulic oil cylinder 150 can be conveniently lifted and retracted.
In an example of the present invention, the present invention further includes:
the detection device 190 is used for detecting the hydraulic value of the hydraulic oil cylinder 150, and when the detection device 190 detects that the hydraulic oil in the hydraulic oil cylinder 150 reaches a set value, the oil pump 120 is controlled to stop working;
specifically, the detection device 190 is electrically connected to the controller, and when the detection device 190 detects that the hydraulic oil in the hydraulic oil cylinder 150 reaches a set value, the detection device controls the oil pump 120 to stop working, and controls the overflow valve 160 to be in a non-conducting state and the reversing valve 140 to be in a second state. Preferably, the detecting device 190 is a pressure detecting device 190.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Those skilled in the art will appreciate that various features of the various embodiments of the invention described hereinabove may be omitted, added to, or combined in any manner accordingly. Moreover, the simple transformation and the solution of adapting and functional structure transformation to the prior art, which can be thought of by those skilled in the art, all belong to the protection scope of the present invention.
While the invention has been shown and described with reference to various embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A hydraulic control system, comprising:
a drive motor (110);
an oil pump (120), wherein the oil pump (120) is fixedly coupled with an output shaft of the driving motor (110), and the oil pump (120) is provided with an input port (121) and an output port (122);
the oil tank (130) stores hydraulic oil inside, and is at least communicated with the input port (121);
a direction valve (140), the direction valve (140) having a first state and a second state, the direction valve (140) having a first oil port (141) and a second oil port (142), the first oil port (141) being communicated with the oil tank (130);
when the reversing valve (140) is in a first state, the first oil port (141) is communicated with the second oil port (142); when the reversing valve (140) is in a second state, the first oil port (141) is not communicated with the second oil port (142);
a hydraulic ram (150) comprising a cylinder body and a piston rod telescopically disposed within the cylinder body, the cylinder body adapted to communicate with the second oil port (142) to drive the piston rod to reciprocate within the cylinder body, wherein the second oil port (142) forms a first node (FD) between the oil pump (120) and the cylinder body;
when the hydraulic oil cylinder (150) needs to extend and move, the driving motor (110) acts, and the reversing valve (140) is in a second state; when the hydraulic oil cylinder (150) needs to retract, the driving motor (110) stops acting, and the reversing valve (140) is in a first state.
2. The hydraulic control system of claim 1, further comprising:
a check valve (170), the check valve (170) being connected between the first node (FD) and the oil pump (120) such that hydraulic oil flows from the oil pump (120) in a direction toward the hydraulic ram (150).
3. The hydraulic control system of claim 2, further comprising:
a relief valve (160), the relief valve (160) having an inlet end (161) and an outlet end (162), the inlet end (161) communicating with the cylinder, the outlet end (162) communicating with the tank (130),
wherein the inlet end (161) forms a second node (SD) between the oil pump (120) and the check valve (170);
when the pressure value of the output port (122) of the oil pump (120) is larger than the preset value of the overflow valve (160), the inlet end (161) is communicated with the outlet end (162).
4. The hydraulic control system of claim 1, further comprising:
a steering handle configured to be coupled to the direction valve (140) for driving the direction valve (140) to switch between a first state and a second state;
when the hydraulic oil cylinder (150) needs to extend and move, an operating handle is operated to enable the reversing valve (140) to be in a second state; when retraction of the hydraulic oil cylinder (150) is required, an operating handle is operated so that the reversing valve (140) is in a first state.
5. The hydraulic control system of claim 1,
the reversing valve (140) is a two-position two-way electromagnetic valve.
6. The hydraulic control system of claim 1, further comprising:
the speed reducer comprises an input shaft and an output shaft, the input shaft is connected with the driving motor (110), and the output shaft is connected with the oil pump (120).
7. The hydraulic control system of claim 1, further comprising:
a filter (180), the filter (180) being disposed between the oil tank (130) and the oil pump (120).
8. The hydraulic control system of claim 1, further comprising:
a controller electrically connected to the direction valve (140) and the drive motor (110) for controlling the direction valve (140) to switch between the first state and the second state;
when the hydraulic oil cylinder (150) needs to extend and move, the controller controls the driving motor (110) to act and controls the reversing valve (140) to be in a second state; when the hydraulic oil cylinder (150) needs to retract, the controller controls the driving motor (110) to stop acting and controls the reversing valve (140) to be in a first state.
9. The hydraulic control system of claim 1, further comprising:
the detection device (190) is used for detecting the hydraulic value of the hydraulic oil cylinder (150), and when the detection device (190) detects that the hydraulic oil in the hydraulic oil cylinder (150) reaches a set value, the oil pump (120) is controlled to stop working.
10. The hydraulic control system of claim 9,
the detection device (190) is a pressure detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020717208.6U CN212615666U (en) | 2020-04-30 | 2020-04-30 | Hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020717208.6U CN212615666U (en) | 2020-04-30 | 2020-04-30 | Hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212615666U true CN212615666U (en) | 2021-02-26 |
Family
ID=74710629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020717208.6U Active CN212615666U (en) | 2020-04-30 | 2020-04-30 | Hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212615666U (en) |
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2020
- 2020-04-30 CN CN202020717208.6U patent/CN212615666U/en active Active
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