CN110966274A - Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof - Google Patents
Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof Download PDFInfo
- Publication number
- CN110966274A CN110966274A CN201911400623.7A CN201911400623A CN110966274A CN 110966274 A CN110966274 A CN 110966274A CN 201911400623 A CN201911400623 A CN 201911400623A CN 110966274 A CN110966274 A CN 110966274A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- handle
- oil inlet
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
Abstract
The invention provides a hydraulic locking oil way, an engineering machinery hydraulic system and a control method thereof, and belongs to the technical field of engineering machinery. The hydraulic locking oil circuit includes: the hydraulic control system comprises an oil inlet path P, an oil return path T, a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is communicated with the oil inlet path P, an oil return port of the handle hydraulic assembly is communicated with the oil return path T, the electromagnetic valve is arranged on the oil inlet path P, and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path P. The hydraulic system of the engineering machinery comprises the hydraulic locking circuit, an engineering machinery body, a controller and a locking device. The control method of the hydraulic system of the engineering machinery is applied to the hydraulic system of the engineering machinery, and whether the handle hydraulic assembly is effectively operated by the handle can be realized by controlling the on-off of the electromagnetic valve, so that the occurrence of major accidents is avoided.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a hydraulic locking oil way, an engineering machinery hydraulic system and a control method thereof.
Background
The operation handle is designed on the engineering machinery such as a loader, an excavating loader, a wheel excavator and the like, and the operation of the operation handle can realize other walking-unrelated actions such as the rotation action of an engineering machinery platform such as an excavator and the like, the lifting action of a movable arm, the descending action of the movable arm, the excavating action of an arm, the unloading action of the arm, the excavating action of the arm, the unloading action of the arm, the excavating action of a bucket.
At present, in the traveling process of engineering machinery, particularly, a wheel excavator, a loader and the like have high traveling speed, an operation handle is easy to trigger and move, and due to the fact that the operation handle is not locked, a corresponding control unit is controlled to move, and accidents such as collision, overturning and the like are easy to cause.
Disclosure of Invention
The invention aims to provide a hydraulic locking oil circuit, an excavator hydraulic system and a control method thereof, which can realize whether a handle hydraulic assembly is effectively operated by a handle or not by controlling the on-off of an electromagnetic valve, and avoid the occurrence of major accidents.
The embodiment of the invention is realized by the following steps:
in one aspect of the embodiments of the present invention, there is provided a hydraulic lock oil passage, including: the hydraulic control system comprises an oil inlet path P, an oil return path T, a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is communicated with the oil inlet path P, an oil return port of the handle hydraulic assembly is communicated with the oil return path T, the electromagnetic valve is arranged on the oil inlet path P, and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path P.
Optionally, the handle hydraulic assembly comprises a left handle hydraulic assembly and a right handle hydraulic assembly, an oil inlet and an oil outlet of the left handle hydraulic assembly are respectively communicated with the oil inlet path P and the oil return path T, and an oil inlet and an oil outlet of the right handle hydraulic assembly are respectively communicated with the oil inlet path P and the oil return path T.
Optionally, the oil inlet path P includes a main oil inlet path and a first oil inlet branch and a second oil inlet branch which are respectively communicated with the main oil inlet path, the first oil inlet branch is communicated with the oil inlet of the left handle hydraulic assembly, and the second oil inlet branch is communicated with the oil inlet of the right handle hydraulic assembly.
Optionally, the oil return path T includes a total oil return path, and a first oil return branch and a second oil return branch that are respectively communicated with the total oil return path, the first oil return branch is communicated with an oil return port of the left handle hydraulic assembly, and the second oil return branch is communicated with an oil return port of the right handle hydraulic assembly.
Optionally, the solenoid valve includes first solenoid valve and second solenoid valve, and first solenoid valve setting is on first oil feed branch road, and the second solenoid valve setting is on second oil feed branch road.
Optionally, set up the solenoid valve on total oil inlet way for the break-make of control total oil inlet way.
Optionally, the handle hydraulic assembly comprises a plurality of working passages connected in parallel to each other for providing hydraulic oil to different actuators, respectively, each working passage being provided with a pressure reducing valve.
In another aspect of the embodiments of the present invention, there is provided an engineering machine hydraulic system, including: the hydraulic locking oil circuit comprises an engineering machine body, a controller, a locking device and the hydraulic locking oil circuit, wherein a handle in the engineering machine body can be selectively connected with a handle hydraulic assembly, and the controller is electrically connected with an electromagnetic valve and the locking device in the hydraulic locking oil circuit respectively.
Optionally, the handle comprises a left handle and a right handle, the left handle is selectively connectable to the left handle hydraulic assembly, and the right handle is selectively connectable to the right handle hydraulic assembly.
In one aspect of the embodiments of the present invention, a method for controlling a hydraulic system of an engineering machine is provided, including: in the above hydraulic system for construction machinery, the control method includes:
receiving a control signal sent by a locking device;
and adjusting the on-off of the electromagnetic valve according to the control signal so as to control the circulation of the hydraulic oil in the oil inlet passage P to the handle hydraulic assembly.
Optionally, the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve and the second electromagnetic valve are respectively electrically connected with a controller in the hydraulic system of the engineering machinery, the hydraulic handle assembly in the hydraulic system of the engineering machinery comprises a left handle hydraulic assembly and a right handle hydraulic assembly, the first electromagnetic valve is arranged on an oil inlet P of the left handle hydraulic assembly, the second electromagnetic valve is arranged on an oil inlet P of the right handle hydraulic assembly, and the controller receives a signal sent by a locking device in the hydraulic system of the engineering machinery and used for controlling the first electromagnetic valve to be switched on and switched off so as to control the working state of the left handle hydraulic assembly;
the controller receives a signal which is sent by the locking device and used for controlling the second electromagnetic valve, and controls the on-off of the second electromagnetic valve so as to control the working state of the right handle hydraulic component.
The embodiment of the invention has the beneficial effects that:
according to the hydraulic locking oil path provided by the embodiment of the invention, whether hydraulic oil in the oil inlet path P flows is determined through the on-off of the electromagnetic valve, and specifically, the hydraulic locking oil path comprises: oil inlet P, oil return T, handle hydraulic assembly and solenoid valve, handle hydraulic assembly's oil inlet and the switch-on of oil inlet P, realize the fuel feeding to handle hydraulic assembly, handle hydraulic assembly's oil return opening and the switch-on of oil return T, realize the oil return to handle hydraulic assembly, the solenoid valve sets up on oil inlet P, the control solenoid valve is electrified or not electrified, the solenoid valve is arranged in controlling the hydraulic oil circulation in oil inlet P, when hydraulic oil does not get into handle hydraulic assembly, how the action of handle is all invalid, therefore, this hydraulic locking oil circuit can be through the break-make of control solenoid valve, realize the handle to handle hydraulic assembly whether effective operation, avoid the emergence of major accident.
The engineering machinery hydraulic system provided by the embodiment of the invention adopts the hydraulic locking oil circuit, and is electrically connected with the electromagnetic valve through the controller, so that the on-off of the electromagnetic valve is controlled, whether the handle hydraulic assembly is effectively operated by the handle is realized, and the occurrence of major accidents is avoided.
The engineering machinery hydraulic system control method provided by the embodiment of the invention adopts the engineering machinery hydraulic system, can control the on-off of the electromagnetic valve, realizes whether the handle is used for effectively operating the handle hydraulic component or not, and avoids the occurrence of major accidents.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a hydraulic locking oil circuit provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic system of a construction machine according to an embodiment of the invention;
fig. 3 is a flowchart of a hydraulic system control method for locking the operation of a handle of a construction machine according to an embodiment of the present invention.
Icon: 10-a controller; 20-a locking device; 100-left handle hydraulic assembly; 110-a first solenoid valve; 111-a first oil inlet branch; 112-a first oil return branch; 200-right handle hydraulic assembly; 210-a second solenoid valve; 211-a second oil inlet branch; 212-second oil return branch.
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 drawings in the embodiments of the present invention, and it is obvious 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.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic structural diagram of a hydraulic lock oil path provided in the present invention, and referring to fig. 1, an embodiment of the present invention provides a hydraulic lock oil path, including: the hydraulic control system comprises an oil inlet path P, an oil return path T, a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is communicated with the oil inlet path P, an oil return port of the handle hydraulic assembly is communicated with the oil return path T, the electromagnetic valve is arranged on the oil inlet path P, and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path P.
It should be noted that, the electromagnetic valve is turned on, that is, the electromagnetic valve is powered on, hydraulic oil in the oil inlet P flows through the electromagnetic valve and enters the handle hydraulic assembly, when the handle selects different working conditions, the valve core of the corresponding hydraulic element in the handle hydraulic assembly is opened by the oil pressure of the hydraulic oil, and the hydraulic oil flows into the corresponding executing element through the hydraulic element, so as to implement the executing action of the working condition; the electromagnetic valve is not connected, namely the electromagnetic valve is not electrified, the hydraulic oil in the oil inlet path P flows through the electromagnetic valve and is blocked, and the hydraulic oil cannot enter the handle hydraulic assembly, so that no matter how the handle selects any working condition, the execution action corresponding to the working condition cannot be realized, namely, at the moment, any action of the handle is invalid.
The embodiment of the invention provides a hydraulic locking oil way, which comprises: the oil inlet of the handle hydraulic component is communicated with the oil inlet P, so that oil supply to the handle hydraulic component is realized, an oil return port of the handle hydraulic component is communicated with the oil return T, oil return to the handle hydraulic component is realized, the electromagnetic valve is arranged on the oil inlet P, the control electromagnetic valve is powered on or not powered on, the electromagnetic valve is used for controlling whether hydraulic oil in the oil inlet P flows or not, when the hydraulic oil does not enter the handle hydraulic component, the handle is ineffective in action, namely, locking of the handle is realized, and therefore the hydraulic locking oil way can realize effective operation of the handle hydraulic component by the handle through controlling the on-off of the electromagnetic valve, and occurrence of major accidents is avoided.
In this embodiment, the handle hydraulic assemblies include a left handle hydraulic assembly 100 and a right handle hydraulic assembly 200, an oil inlet and an oil outlet of the left handle hydraulic assembly 100 are respectively communicated with the oil inlet path P and the oil return path T, and an oil inlet and an oil outlet of the right handle hydraulic assembly 200 are respectively communicated with the oil inlet path P and the oil return path T.
It should be noted that, because the handle hydraulic assemblies include the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200, and the oil inlet and the oil outlet of the left handle hydraulic assembly 100 and the oil inlet and the oil outlet of the right handle hydraulic assembly 200 are respectively communicated with the oil inlet path P and the oil return path T, the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 are independent of each other.
In this embodiment, the oil inlet path P includes a main oil inlet path, and a first oil inlet branch 111 and a second oil inlet branch 211 respectively communicated with the main oil inlet path, the first oil inlet branch 111 is communicated with an oil inlet of the left handle hydraulic component 100, and the second oil inlet branch 211 is communicated with an oil inlet of the right handle hydraulic component 200.
It should be noted that, as can be seen from the above description, the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 are independent from each other, and therefore, two branches of the main oil path of the oil inlet path P are parallel to each other, that is, the first oil inlet branch 111 and the second oil inlet branch 211 which are respectively communicated with the main oil path, so as to realize respective corresponding supply of hydraulic oil.
In this embodiment, the oil return path T includes a main oil return path and a first oil return branch 112 and a second oil return branch 212 respectively communicated with the main oil return path, the first oil return branch 112 is communicated with the oil return port of the left handle hydraulic assembly 100, and the second oil return branch 212 is communicated with the oil return port of the right handle hydraulic assembly 200.
It should be noted that, as described above, since the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 are independent from each other, and the main oil inlet path is parallel to the first oil inlet branch 111 and the second oil inlet branch 211, it is necessary to parallel to the main oil return path the first oil return branch 112 and the second oil return branch 212, so that the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 form a complete hydraulic circuit respectively.
In this embodiment, the solenoid valve includes a first solenoid valve 110 and a second solenoid valve 210, the first solenoid valve 110 is disposed on the first oil inlet branch 111, and the second solenoid valve 210 is disposed on the second oil inlet branch 211.
It should be noted that, because the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 are independent from each other, and to lock the oil passages of the two handle hydraulic assemblies, electromagnetic valves need to be respectively arranged on the oil inlet passages of the corresponding left handle hydraulic assembly 100 and the right handle hydraulic assembly 200, so as to lock the oil passages of the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 respectively.
Optionally, in this embodiment, a solenoid valve may be further disposed on the total oil inlet path to control the on-off of the total oil inlet path.
In this embodiment, the handle hydraulic assembly includes a plurality of working passages connected in parallel to each other for respectively supplying hydraulic oil to different actuators, and each working passage is provided with a pressure reducing valve.
It should be noted that, the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 both include working passages that are arranged in parallel and used for providing hydraulic oil for different execution elements respectively, and when the electromagnetic valves corresponding to the gears are powered on, according to different working conditions, the operators operate to enable the handles to select different working conditions, so that hydraulic oil flows through the pressure reducing valve, and the valve core corresponding to the pressure reducing valve is opened, so that the hydraulic oil in the oil inlet passage P enters the execution element corresponding to the working condition, and the action corresponding to the working condition is completed.
The hydraulic locking oil way provided by the embodiment of the invention comprises a left handle hydraulic assembly 100 and a right handle hydraulic assembly 200, wherein an oil inlet P of each corresponding handle hydraulic assembly is connected with an electromagnetic valve, a first electromagnetic valve 110 and a second electromagnetic valve 210, and the first electromagnetic valve 110 and the second electromagnetic valve 210 respectively and correspondingly control the on-off of the oil inlet of the left handle hydraulic assembly 100 and the oil inlet of the right handle hydraulic assembly 200, so that whether the left handle hydraulic assembly 100 and the right handle hydraulic assembly 200 are effectively operated by the left handle and the right handle respectively is realized, and the safety factor is improved.
Fig. 2 is a schematic structural diagram of a hydraulic system of an engineering machine according to an embodiment of the present invention, and referring to fig. 2, in another aspect of the embodiment of the present invention, a hydraulic system of an engineering machine is provided, including: the hydraulic locking oil circuit comprises an engineering machine body, a controller 10, a locking device 20 and the hydraulic locking oil circuit, wherein a handle in the engineering machine body can be selectively connected with a handle hydraulic assembly, and the controller 10 is respectively electrically connected with an electromagnetic valve in the hydraulic locking oil circuit and the locking device 20.
The construction machine body is a mechanical equipment necessary for a comprehensive mechanized construction work required for road surface construction and maintenance, mobile lifting, loading and unloading work, and various construction works. The controller 10 is configured to control whether the first solenoid valve 110 and the second solenoid valve 210 are powered on according to the received signal, so as to correspondingly control on/off of the corresponding first oil inlet branch 111 and the corresponding second oil inlet branch 211. The lockout device 20 is primarily used to provide the controller 10 with a signal that controls whether the first solenoid valve 110 and the second solenoid valve 210 are energized.
In this embodiment, the handles include a left handle that is selectively connectable to the left handle hydraulic assembly 100 and a right handle that is selectively connectable to the right handle hydraulic assembly 200.
It should be noted that the engineering machine body includes two handles, the left handle and the right handle correspond to the left handle hydraulic component 100 and the right handle hydraulic component 200 respectively, and the left handle and the right handle can be selectively connected with the corresponding left handle hydraulic component 100 and the right handle hydraulic component 200, so as to implement different working conditions.
Fig. 3 is a flowchart of a method for controlling a hydraulic system of a handle motion lock of a construction machine according to an embodiment of the present invention, and referring to fig. 3, in an aspect of the embodiment of the present invention, a method for controlling a hydraulic system of a construction machine is provided, including: the hydraulic system of the engineering machinery comprises the following control methods:
s10: receives a control signal from the locking device 20.
S20: and adjusting the on-off of the electromagnetic valve according to the control signal so as to control the circulation of the hydraulic oil in the oil inlet passage P to the handle hydraulic assembly.
It should be noted that the control signal sent by the locking device 20 is a signal for controlling whether the first solenoid valve 110 and the second solenoid valve 210 are powered, and the controller 10 receives the signal, pre-processes the signal, and then correspondingly sends the signal to the first solenoid valve 110 and the second solenoid valve 210 to respectively control the states of the corresponding solenoid valves.
Illustratively, the construction machine body is an excavator, the left handle of the excavator controls left rotation, right rotation, arm unloading and arm excavating of the excavator, the right handle of the excavator controls bucket unloading, bucket excavating, boom descending and boom lifting of the excavator, the locking device 20 transmits signals for controlling the first electromagnetic valve 110 and the second electromagnetic valve 210 to the controller 10, the controller 10 respectively controls whether the first electromagnetic valve 110 and the second electromagnetic valve 210 are powered or not after preprocessing the signals, for example, the controller 10 controls the first electromagnetic valve 110 to be powered and the second electromagnetic valve 210 not to be powered, at this time, hydraulic oil enters the left handle hydraulic assembly 100, the excavator needs left rotation, the left handle is selectively communicated with an oil path for controlling left rotation, so that a valve core of a pressure reducing valve for controlling left rotation is opened, hydraulic oil flows through the pressure reducing valve and enters a main valve to push the valve core of the main valve, the left swing hydraulic main circuit is opened so that hydraulic oil enters the swing motor to complete a swing motion, and the excavator completes the left swing motion, and since the second solenoid valve 210 is not energized, hydraulic oil cannot enter the right handle hydraulic assembly 200, and the excavator cannot move regardless of the selective connection of the right handle to the hydraulic components that control the bucket unloading, bucket digging, boom lowering, and boom raising, that is, even if the right handle is inadvertently touched, the excavator is safe.
In this embodiment, the electromagnetic valve includes a first electromagnetic valve 110 and a second electromagnetic valve 210, the first electromagnetic valve 110 and the second electromagnetic valve 210 are respectively electrically connected with a controller 10 in the hydraulic system of the engineering machinery, the hydraulic handle assembly in the hydraulic system of the engineering machinery includes a left handle hydraulic assembly 100 and a right handle hydraulic assembly 200, the first electromagnetic valve 110 is arranged on an oil inlet P of the left handle hydraulic assembly 100, the second electromagnetic valve 210 is arranged on the oil inlet P of the right handle hydraulic assembly 200, and the controller 10 receives a signal sent by a locking device 20 in the hydraulic system of the engineering machinery to control the first electromagnetic valve 110, and controls the on-off of the first electromagnetic valve 110 to control the working state of the left handle hydraulic assembly 100;
the controller 10 receives a signal sent by the locking device 20 to control the second solenoid valve 210, and controls the on/off of the second solenoid valve 210 to control the working state of the right handle hydraulic assembly 200.
According to the engineering machinery hydraulic system and the control method thereof provided by the embodiment of the invention, the controller 10 controls whether the first electromagnetic valve 110 and the second electromagnetic valve 210 are powered or not by acquiring the signal sent by the locking device 20, so that whether hydraulic oil in the oil inlet path P enters the left handle hydraulic assembly 100 or the right handle hydraulic assembly 200 or not is controlled, whether the left handle operates the left handle hydraulic assembly 100 or not is achieved, or whether the right handle operates the right handle hydraulic assembly 200 or not is achieved, and occurrence of major accidents is avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hydraulic lock oil passage, comprising: the hydraulic oil return device comprises an oil inlet path (P), an oil return path (T), a handle hydraulic assembly and an electromagnetic valve, wherein an oil inlet of the handle hydraulic assembly is communicated with the oil inlet path (P), an oil return port of the handle hydraulic assembly is communicated with the oil return path (T), the electromagnetic valve is arranged on the oil inlet path (P), and the electromagnetic valve is used for controlling the circulation of hydraulic oil in the oil inlet path (P).
2. The hydraulic locking circuit according to claim 1, wherein the handle hydraulic assembly comprises a left handle hydraulic assembly (100) and a right handle hydraulic assembly (200), an oil inlet and an oil outlet of the left handle hydraulic assembly (100) are respectively communicated with the oil inlet path (P) and the oil return path (T), and an oil inlet and an oil outlet of the right handle hydraulic assembly (200) are respectively communicated with the oil inlet path (P) and the oil return path (T).
3. The hydraulic locking oil way according to claim 2, wherein the oil inlet path (P) comprises a main oil inlet path and a first oil inlet branch (111) and a second oil inlet branch (211) which are respectively communicated with the main oil inlet path, the first oil inlet branch (111) is communicated with an oil inlet of the left handle hydraulic assembly (100), and the second oil inlet branch (211) is communicated with an oil inlet of the right handle hydraulic assembly (200).
4. The hydraulic lock circuit of claim 2, wherein the oil return path (T) comprises a main oil return path and a first oil return branch (112) and a second oil return branch (212) respectively communicated with the main oil return path, the first oil return branch (112) is communicated with an oil return port of the left handle hydraulic assembly (100), and the second oil return branch (212) is communicated with an oil return port of the right handle hydraulic assembly (200).
5. The hydraulic locking circuit according to claim 3, wherein the solenoid valve includes a first solenoid valve (110) and a second solenoid valve (210), the first solenoid valve (110) is provided on the first oil feed branch (111), and the second solenoid valve (210) is provided on the second oil feed branch (211).
6. The hydraulic lock circuit of claim 1, wherein the handle hydraulic assembly includes a plurality of working passages connected in parallel to each other for supplying the hydraulic oil to different actuators, respectively, each of the working passages being provided with a pressure reducing valve.
7. A hydraulic system for a construction machine, comprising a construction machine body, a controller (10), a locking device (20) and a hydraulic locking oil circuit according to any one of claims 1 to 6, wherein a handle in the construction machine body can be selectively connected with a handle hydraulic assembly in the hydraulic locking oil circuit, and the controller (10) is electrically connected with a solenoid valve in the hydraulic locking oil circuit and the locking device (20) respectively.
8. The work machine hydraulic system of claim 7, wherein the handle comprises a left handle selectively connectable to a left handle hydraulic assembly (100) in the hydraulically locked circuit and a right handle selectively connectable to a right handle hydraulic assembly (200) in the hydraulically locked circuit.
9. A method for controlling a hydraulic system of a working machine, which is applied to the hydraulic system of a working machine according to any one of claims 7 to 8, the method comprising:
receiving a control signal sent by a locking device (20);
and adjusting the on-off of the electromagnetic valve according to the control signal so as to control the circulation of the hydraulic oil in the oil inlet path (P) to the handle hydraulic component.
10. The method of controlling a hydraulic system of a construction machine according to claim 9, wherein the solenoid valves in the hydraulic system of the construction machine include a first solenoid valve (110) and a second solenoid valve (210), the first solenoid valve (110) and the second solenoid valve (210) are respectively electrically connected to a controller (10) in the hydraulic system of the construction machine, the hydraulic handle assembly in the hydraulic system of the construction machine includes a left handle hydraulic assembly (100) and a right handle hydraulic assembly (200), the first solenoid valve (110) is disposed on the oil inlet path (P) of the left handle hydraulic assembly (100), the second solenoid valve (210) is disposed on the oil inlet path (P) of the right handle hydraulic assembly (200), and the controller (10) receives a signal for controlling the first solenoid valve (110) from a locking device (20) in the hydraulic system of the construction machine, controlling the on-off of the first electromagnetic valve (110) to control the working state of the left handle hydraulic assembly (100);
the controller (10) receives a signal which is sent by the locking device (20) and used for controlling the second electromagnetic valve (210), and controls the on-off of the second electromagnetic valve (210) so as to control the working state of the right handle hydraulic assembly (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911400623.7A CN110966274B (en) | 2019-12-30 | 2019-12-30 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911400623.7A CN110966274B (en) | 2019-12-30 | 2019-12-30 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110966274A true CN110966274A (en) | 2020-04-07 |
| CN110966274B CN110966274B (en) | 2022-06-07 |
Family
ID=70037628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911400623.7A Active CN110966274B (en) | 2019-12-30 | 2019-12-30 | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110966274B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376646A (en) * | 2020-12-18 | 2021-02-19 | 徐工集团工程机械股份有限公司科技分公司 | Loader hydraulic system with safety locking function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509266A (en) * | 2009-02-23 | 2009-08-19 | 三一重机有限公司 | Control method for improving smoothening capability of excavator |
| CN202298698U (en) * | 2011-08-18 | 2012-07-04 | 山推工程机械股份有限公司 | Hydraulic control handle operating device for land leveler |
| CN102561937A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Adjustable rock drilling control system of hydraulic rock drilling machine |
| CN202358844U (en) * | 2011-11-22 | 2012-08-01 | 徐州重型机械有限公司 | Liquid control handle of crane and crane |
| CN102900719A (en) * | 2012-10-15 | 2013-01-30 | 常德中联重科液压有限公司 | Hydraulic switching device, hydraulic system and engineering machinery |
| CN105041732A (en) * | 2015-09-18 | 2015-11-11 | 上海中联重科桩工机械有限公司 | Control system having automatic earth shaking function and rotary drilling rig |
| CN205331086U (en) * | 2016-01-27 | 2016-06-22 | 宁波中宁伟业液压有限公司 | All -hydraulic amphibious tank hydraulic drive control system that travels |
| CN109183870A (en) * | 2018-09-19 | 2019-01-11 | 柳州柳工挖掘机有限公司 | Excavator swing arm hydraulic control system and lift control method |
| CN110329912A (en) * | 2019-07-17 | 2019-10-15 | 北汽福田汽车股份有限公司 | Crane control system and crane with it |
-
2019
- 2019-12-30 CN CN201911400623.7A patent/CN110966274B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509266A (en) * | 2009-02-23 | 2009-08-19 | 三一重机有限公司 | Control method for improving smoothening capability of excavator |
| CN202298698U (en) * | 2011-08-18 | 2012-07-04 | 山推工程机械股份有限公司 | Hydraulic control handle operating device for land leveler |
| CN202358844U (en) * | 2011-11-22 | 2012-08-01 | 徐州重型机械有限公司 | Liquid control handle of crane and crane |
| CN102561937A (en) * | 2012-01-20 | 2012-07-11 | 中船重工中南装备有限责任公司 | Adjustable rock drilling control system of hydraulic rock drilling machine |
| CN102900719A (en) * | 2012-10-15 | 2013-01-30 | 常德中联重科液压有限公司 | Hydraulic switching device, hydraulic system and engineering machinery |
| CN105041732A (en) * | 2015-09-18 | 2015-11-11 | 上海中联重科桩工机械有限公司 | Control system having automatic earth shaking function and rotary drilling rig |
| CN205331086U (en) * | 2016-01-27 | 2016-06-22 | 宁波中宁伟业液压有限公司 | All -hydraulic amphibious tank hydraulic drive control system that travels |
| CN109183870A (en) * | 2018-09-19 | 2019-01-11 | 柳州柳工挖掘机有限公司 | Excavator swing arm hydraulic control system and lift control method |
| CN110329912A (en) * | 2019-07-17 | 2019-10-15 | 北汽福田汽车股份有限公司 | Crane control system and crane with it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376646A (en) * | 2020-12-18 | 2021-02-19 | 徐工集团工程机械股份有限公司科技分公司 | Loader hydraulic system with safety locking function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110966274B (en) | 2022-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104870831B (en) | Hydraulic control device and construction machine with same | |
| JP5859857B2 (en) | Hydraulic circuit for construction machinery | |
| KR100665113B1 (en) | Haydraulic circuit for heavy equipment | |
| CN105317074B (en) | Engineering machinery | |
| KR102510852B1 (en) | Hydraulic system and hydraulic control method for construction machine | |
| CN104812967B (en) | Engineering machinery | |
| CN103459857A (en) | Hydraulic drive of machinery | |
| EP3093398A1 (en) | Control circuit and control method for boom energy regeneration | |
| CN110966274B (en) | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof | |
| CN114207292B (en) | Hydraulic system for construction machine | |
| CN109563695B (en) | Control valve for excavator and excavator | |
| KR102045075B1 (en) | Electronic control valve blocks for main control valves of construction machinery | |
| CN211113858U (en) | Protection control device and excavator during pilot operation failure | |
| EP2910796B9 (en) | Assembly with a control valve device with a float position | |
| JP2000204604A (en) | Revolution locking device for construction machine | |
| JP2002046978A (en) | Hydraulic circuit for crane | |
| CN109281881A (en) | Engineering machinery and its upper-part rotation control system | |
| CN212104246U (en) | Excavator digging arm operating condition switches locking means | |
| CN201264890Y (en) | Remote steering control apparatus for leading steering controlled wheel type loader | |
| CN110905033B (en) | Excavator hydraulic system with double working modes | |
| JP3339821B2 (en) | Work machine locking method and locking device | |
| CN219491141U (en) | Excavator hydraulic system and double-arm excavator | |
| KR101156859B1 (en) | Apparatus for preventing unexpected operation of an excavator | |
| CN219298323U (en) | Excavator hydraulic system and excavator | |
| EP3821136B1 (en) | Hydraulic machine comprising a hydraulic circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |