CN111536090A - Hydraulic control system and excavator - Google Patents
Hydraulic control system and excavator Download PDFInfo
- Publication number
- CN111536090A CN111536090A CN202010384343.8A CN202010384343A CN111536090A CN 111536090 A CN111536090 A CN 111536090A CN 202010384343 A CN202010384343 A CN 202010384343A CN 111536090 A CN111536090 A CN 111536090A
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- valve
- control system
- hydraulic control
- pipeline
- hydraulic
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- 230000003993 interaction Effects 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of excavators, in particular to a hydraulic control system and an excavator. The hydraulic control system includes: the system comprises a controller, a first valve, a second valve and a man-machine interaction device; the first valve is arranged on the first pipeline, the second valve is arranged on the second pipeline, one end of the first pipeline is used for being communicated with an oil inlet of the machine tool, and one end of the second pipeline is used for being communicated with an oil outlet of the machine tool; the man-machine interaction device is used for controlling the first valve and the second valve through the controller. The excavator comprises the hydraulic control system. The invention is convenient for replacing machines and tools, can realize the control of different machines and tools, and is labor-saving and time-saving.
Description
Technical Field
The invention relates to the technical field of excavators, in particular to a hydraulic control system and an excavator.
Background
At present, the excavator is more and more widely applied, and the excavator is not only applied to earthwork excavation operation, but also is applied to various working conditions such as crushing, hoisting, soil compacting, wood grabbing, wood planting and the like in an auxiliary manner. In practical application, a hydraulic pipeline of the breaking hammer, a hydraulic pipeline of the hydraulic shear and a control pipeline are separately arranged on the excavator, so that labor and time are wasted when the two-way operation machines such as the breaking hammer, the hydraulic shear and the like are switched.
Disclosure of Invention
The invention aims to provide a hydraulic control system and an excavator, and aims to solve the technical problem that labor and time are wasted when bidirectional operation machines such as a breaking hammer and a hydraulic shear are switched in the prior art.
The present invention provides a hydraulic control system, including: the system comprises a controller, a first valve, a second valve and a man-machine interaction device; the first valve is arranged on a first pipeline, the second valve is arranged on a second pipeline, one end of the first pipeline is used for being communicated with an oil inlet of an implement, and one end of the second pipeline is used for being communicated with an oil outlet of the implement; the human-computer interaction device is used for controlling the first valve and the second valve through the controller.
In any of the above technical solutions, further, the first valve is a proportional electromagnetic spill valve, and the second valve is a proportional electromagnetic spill valve; the controller can control the opening degree of the first valve and the opening degree of the second valve respectively.
In any of the above technical solutions, further, the human-computer interaction device is a display screen; the display screen is electrically connected with the controller, and the display screen can display different machine tool modes.
In any of the above technical solutions, further, the implement is a breaking hammer or a hydraulic shear; the implement modes include a breaking hammer mode and a hydraulic shear mode, wherein,
when the breaking hammer mode is selected, the opening degree of the first valve is a set value, and the opening degree of the second valve is fully opened;
when the hydraulic shear mode is selected, the opening degree of the first valve and the opening degree of the second valve can be arbitrarily set by a user, respectively.
In any of the above technical solutions, further, the hydraulic control system further includes an operating mechanism, and the operating mechanism is electrically connected to the controller and is used for controlling the action of the implement.
In any of the above technical solutions, further, the hydraulic control system further includes an electromagnetic directional valve, and the other end of the first pipeline and the other end of the second pipeline are respectively communicated with the electromagnetic directional valve.
In any one of the above technical solutions, further, a first stop valve is disposed on the first pipeline, and the first valve is located between the electromagnetic directional valve and the first stop valve;
and a second stop valve is arranged on the second pipeline, and the second valve is positioned between the electromagnetic directional valve and the second stop valve.
In any of the above technical solutions, further, the electromagnetic directional valve is a three-position four-way valve.
In any of the above technical solutions, further, the hydraulic control system further includes a hydraulic pump, and the hydraulic pump is communicated with the electromagnetic directional valve.
The invention also provides an excavator which comprises the hydraulic control system.
Compared with the prior art, the invention has the following beneficial effects:
the present invention provides a hydraulic control system, comprising: the system comprises a controller, a first valve, a second valve and a man-machine interaction device; the first valve is arranged on the first pipeline, the second valve is arranged on the second pipeline, one end of the first pipeline is used for being communicated with an oil inlet of the machine tool, and one end of the second pipeline is used for being communicated with an oil outlet of the machine tool; the man-machine interaction device is used for controlling the first valve and the second valve through the controller. After the first pipeline and the second pipeline are connected with the machine tool, the man-machine interaction device is used for controlling the first valve and the second valve, so that different machine tools can share one set of pipeline, a controller and the man-machine interaction device, the operation of replacing the machine tool is simplified, the machine tool is controlled conveniently, and labor and time are saved.
The invention also provides an excavator, which comprises the hydraulic control system. Based on the analysis, the excavator is convenient for replacing machines and tools, can realize the control of different machines and tools, and is labor-saving and time-saving.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a hydraulic control system according to a first embodiment of the present invention;
fig. 2 is an electrical control schematic diagram of a hydraulic control system according to a first embodiment of the present invention.
Icon:
101-a controller; 102-a first valve; 103-a second valve;
104-a display screen; 105-a first conduit; 106-a second conduit;
107-a steering mechanism; 108-a solenoid directional valve; 109-a hydraulic pump;
110-a fuel tank; 111-a first stop valve; 112-a second stop valve;
113-a machine tool; 201-electric control valve group.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 and 2, an embodiment of the present invention provides a hydraulic control system, including: the system comprises a controller 101, a first valve 102, a second valve 103 and a human-computer interaction device; the first valve 102 is installed on a first pipeline 105, the second valve 103 is installed on a second pipeline 106, one end of the first pipeline 105 is used for being communicated with an oil inlet of the machine 113, and one end of the second pipeline 106 is used for being communicated with an oil outlet of the machine 113; the human-computer interaction device is used for controlling the first valve 102 and the second valve 103 through the controller 101. The controller 101 can control the opening degrees of the first valve 102 and the second valve 103. The man-machine interaction device is convenient for the user to operate. Different implements 113 may share the first and second conduits 105, 106.
The hydraulic control system provided by the embodiment is connected with the implement 113 through the first pipeline 105 and the second pipeline 106, and then the first valve 102 and the second valve 103 are controlled through the human-computer interaction device, so that the implement 113 is controlled conveniently, and labor and time are saved. When the breaking hammer needs to be used, the hydraulic shear installed on the excavator is detached, and then the breaking hammer is installed.
In an optional scheme of this embodiment, the first valve 102 is a proportional electromagnetic spill valve, and the second valve 103 is a proportional electromagnetic spill valve; the controller 101 can control the opening degree of the first valve 102 and the opening degree of the second valve 103, respectively. The proportional electromagnetic overflow valve is adopted, so that electric control is convenient to realize, and the controller 101 can conveniently control the overflow pressure of the proportional electromagnetic overflow valve. The first valve 102 and the second valve 103 are electrically connected to the controller 101, respectively. It should be noted that the first valve 102 and the second valve 103 are not limited to a proportional electromagnetic spill valve, and may be other valves or valve groups capable of implementing control functions thereof.
In an optional scheme of this embodiment, the human-computer interaction device is a display screen 104; the display screen 104 is electrically connected to the controller 101, and the display screen 104 can display different implement modes. The display of implement modes, and thus switching, is facilitated by display screen 104, and it is also facilitated for the user to identify what mode the current hydraulic control system is in; the display screen 104 may be a touch display screen 104, or may be a display screen 104 with keys. It should be noted that the human-computer interaction device may also be a switch, and the switch switches between different mold modes through high and low levels.
In an alternative of this embodiment, the implement 113 may be a breaking hammer or a hydraulic shear; the machine tool mode comprises a breaking hammer mode and a hydraulic shear mode, wherein when the breaking hammer mode is selected, the opening degree of the first valve 102 is a set value, and the opening degree of the second valve 103 is a full opening degree; when the hydraulic shear mode is selected, the opening degree of the first valve 102 and the opening degree of the second valve 103 can be arbitrarily set by the user, respectively. Through the presetting of different modes, the selection of a user is facilitated.
Specifically, when the hammer mode is selected, the opening degree of the first valve 102 is a set value, and the first pipeline corresponds to a hammer high-pressure pipeline; the second valve 103 is fully open and the second line 106 corresponds to the return line of the hammer. When the hydraulic shear mode is selected, the opening degree of the first valve 102 and the opening degree of the second valve 103 may be set by the user in the display screen 104, for example: the user can arbitrarily set the ratio of the opening degree of the first valve 102 to the opening degree of the second valve 103 in the display screen 104.
In an alternative embodiment, the hydraulic control system further includes a control mechanism 107, and the control mechanism 107 is electrically connected to the controller 101 for controlling the operation of the implement 113. After different implement modes are selected, the operation of the breaking hammer or the hydraulic shear is realized through the operating mechanism 107.
In an optional scheme of this embodiment, the hydraulic control system further includes a solenoid directional valve 108, and the other end of the first pipeline 105 and the other end of the second pipeline 106 are respectively communicated with the solenoid directional valve 108. The change of the oil path flow direction between different implement modes can be realized through the electromagnetic directional valve 108. The electromagnetic directional valve can be electrically connected with the controller, the electromagnetic directional valve 108 can be a proportional electromagnetic directional valve, and the control mechanism controls the direction change and the flow control of the electromagnetic directional valve through the controller.
Specifically, the solenoid directional valve 108 may be a three-position, four-way valve; the other end of the first pipeline 105 is communicated with an A port of the three-position four-way valve, and the other end of the second pipeline 106 is communicated with a B port of the three-position four-way valve. The first valve, the second valve and the electromagnetic directional valve may form an electronic control valve set 201.
In an alternative scheme of this embodiment, a first stop valve 111 is disposed on the first pipeline 105, and the first valve 102 is located between the electromagnetic directional valve 108 and the first stop valve 111; a second cut-off valve 112 is disposed on the second pipeline 106, and the second valve 103 is located between the electromagnetic directional valve 108 and the second cut-off valve 112. The safety protection of the control system can be achieved by providing the first stop valve 111 and the second stop valve 112.
Specifically, the first valve 102 is located between the port a of the three-position four-way valve and the first cut-off valve 111; the second valve 103 is located between the port B of the three-position four-way valve and the second cut-off valve 112.
In an alternative of this embodiment, the hydraulic control system further includes a hydraulic pump 109, and the hydraulic pump 109 is in communication with the electromagnetic directional valve 108. The pumping of the oil is achieved by a hydraulic pump 109. The output end of the hydraulic pump 109 is communicated with the port P of the three-position four-way valve. The T port of the three-position four-way valve is communicated with the oil tank 110.
According to the hydraulic control system provided by the embodiment of the invention, after the breaking hammer mode or the hydraulic shear mode is selected on the display screen 104, and after the controller 101 receives the mode selection signal sent by the display screen 104, the controller 101 determines the running electric control program according to the mode selection signal, namely, the first electric valve and the second valve 103 are controlled, and a user operates the operating mechanism 107 to realize corresponding actions of the hydraulic shear or the breaking hammer. When the breaking hammer mode is selected, the breaking hammer is controlled to break through the action of the operating mechanism 107; when the hydraulic shear mode is selected, the opening degrees of the first valve 102 and the second valve 103 are set by a user, and the opening and closing operations of the hydraulic shears are controlled by the operation of the operating mechanism 107.
In summary, the hydraulic control system provided in the embodiment of the present invention can achieve the purpose of switching between different implement modes and full electric control on the basis of removing the pedal switch of the breaking hammer. For the control mode of the breaking hammer, a breaking hammer pedal switch and a pilot pipeline are not required to be added; the breaking hammer and the hydraulic shear share a set of steering mechanism 107.
Example two
The second embodiment of the invention provides an excavator, which comprises the hydraulic control system provided by the first embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
Claims (10)
1. A hydraulic control system, comprising: the system comprises a controller (101), a first valve (102), a second valve (103) and a human-computer interaction device; the first valve (102) is installed on a first pipeline (105), the second valve (103) is installed on a second pipeline (106), one end of the first pipeline (105) is used for being communicated with an oil inlet of an implement (113), and one end of the second pipeline (106) is used for being communicated with an oil outlet of the implement (113); the human-computer interaction device is used for controlling the first valve (102) and the second valve (103) through the controller (101).
2. The hydraulic control system of claim 1, wherein the first valve (102) is a proportional electromagnetic spill valve and the second valve (103) is a proportional electromagnetic spill valve; the controller (101) is capable of controlling the opening of the first valve (102) and the opening of the second valve (103), respectively.
3. The hydraulic control system of claim 1 or 2, wherein the human interaction device is a display screen (104); the display screen (104) is electrically connected with the controller (101), and the display screen (104) can display different machine tool modes.
4. The hydraulic control system of claim 3, wherein the implement (113) is a breaking hammer or a hydraulic shear; the implement modes include a breaking hammer mode and a hydraulic shear mode, wherein,
when the breaking hammer mode is selected, the opening degree of the first valve (102) is a set value, and the opening degree of the second valve (103) is fully opened;
when the hydraulic shear mode is selected, the opening degree of the first valve (102) and the opening degree of the second valve (103) can be arbitrarily set by a user, respectively.
5. The hydraulic control system of claim 1 or 2, further comprising an operating mechanism (107), the operating mechanism (107) being electrically connected to the controller (101) for controlling the action of the implement (113).
6. The hydraulic control system according to claim 1, further comprising a solenoid directional valve (108), and the other end of the first line (105) and the other end of the second line (106) communicate with the solenoid directional valve (108), respectively.
7. The hydraulic control system of claim 6, wherein a first shut-off valve (111) is provided on the first line (105), and the first valve (102) is located between the electromagnetic directional valve (108) and the first shut-off valve (111);
and a second stop valve (112) is arranged on the second pipeline (106), and the second valve (103) is positioned between the electromagnetic directional valve (108) and the second stop valve (112).
8. The hydraulic control system of claim 6 or 7, wherein the solenoid directional valve (108) is a three-position, four-way valve.
9. The hydraulic control system of claim 6 or 7, further comprising a hydraulic pump (109), the hydraulic pump (109) being in communication with the solenoid directional valve (108).
10. An excavator comprising a hydraulic control system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010384343.8A CN111536090A (en) | 2020-05-08 | 2020-05-08 | Hydraulic control system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010384343.8A CN111536090A (en) | 2020-05-08 | 2020-05-08 | Hydraulic control system and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN111536090A true CN111536090A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010384343.8A Pending CN111536090A (en) | 2020-05-08 | 2020-05-08 | Hydraulic control system and excavator |
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| Country | Link |
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| CN (1) | CN111536090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203584939U (en) * | 2013-10-31 | 2014-05-07 | 宝钢不锈钢有限公司 | Hydraulic drive valve device used for controlling pressure of AOD furnace |
| CN109826273A (en) * | 2019-03-29 | 2019-05-31 | 三一重机有限公司 | Hydraulic pilot control system and excavator |
| CN110792644A (en) * | 2019-10-12 | 2020-02-14 | 柳州柳工挖掘机有限公司 | High-low pressure quick-change hydraulic system of excavator |
-
2020
- 2020-05-08 CN CN202010384343.8A patent/CN111536090A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203584939U (en) * | 2013-10-31 | 2014-05-07 | 宝钢不锈钢有限公司 | Hydraulic drive valve device used for controlling pressure of AOD furnace |
| CN109826273A (en) * | 2019-03-29 | 2019-05-31 | 三一重机有限公司 | Hydraulic pilot control system and excavator |
| CN110792644A (en) * | 2019-10-12 | 2020-02-14 | 柳州柳工挖掘机有限公司 | High-low pressure quick-change hydraulic system of excavator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
| CN114352592B (en) * | 2022-01-24 | 2023-09-22 | 三一重机有限公司 | Hydraulic control system and working machine |
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Application publication date: 20200814 |