CN114033775B - Multifunctional large-flow hydraulic system and control method thereof - Google Patents
Multifunctional large-flow hydraulic system and control method thereof Download PDFInfo
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- CN114033775B CN114033775B CN202111392656.9A CN202111392656A CN114033775B CN 114033775 B CN114033775 B CN 114033775B CN 202111392656 A CN202111392656 A CN 202111392656A CN 114033775 B CN114033775 B CN 114033775B
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- 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
- F15B21/087—Control strategy, e.g. with block diagram
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
- F15B1/033—Installations or systems with accumulators having accumulator charging devices with electrical control means
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- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- 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 utility model provides a multi-functional large-traffic hydraulic system, including oil tank pump package unit, pressure control unit, conventional valves integrated element and large-traffic valves integrated element, oil tank pump package unit includes the oil tank, the pump package, conventional valves integrated element includes the solenoid valve, the relief pressure valve, speed governing valve and three-position cross solenoid valve, large-traffic valves integrated element includes the solenoid valve, two-position two-way solenoid valve and energy storage ware subassembly, the pump package communicates with first actuating mechanism after first solenoid valve in proper order, first relief pressure valve, first speed governing valve, three-position cross solenoid valve, the pump package communicates with second actuating mechanism after second solenoid valve, the second speed governing valve in proper order, the pump package communicates with third actuating mechanism after third solenoid valve, the second relief pressure valve in proper order, the pump package communicates with the energy storage ware subassembly after the fourth solenoid valve, the energy storage ware subassembly communicates with fourth actuating mechanism after the two-position two-way solenoid valve. The design can provide large flow and can realize concentrated use of the hydraulic power source.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a multifunctional high-flow hydraulic system and a control method thereof, which are mainly suitable for providing high-flow hydraulic power sources capable of realizing centralized use.
Background
The hydraulic control technology field is widely applied to various industries, such as machine tool industry, metallurgical industry, engineering machinery, agricultural machinery, automobile industry, light spinning industry, ship industry and other civil industries, and further such as national defense industry and other military industries, due to the fact that the hydraulic control technology field has a plurality of outstanding advantages. In a word, in all engineering technical fields, the hydraulic control technology can be adopted in the occasions related to mechanical equipment, and the application prospect is bright. The hydraulic system can provide hydraulic driving force for the driving mechanism, but the existing hydraulic system can not provide power sources for the execution mechanisms under different working conditions in the same period, and can not provide instantaneous large-flow power sources for the execution mechanisms under specific working conditions.
Disclosure of Invention
The invention aims to overcome the defects and problems in the prior art and provide a multifunctional large-flow hydraulic system which has large flow and can realize centralized use of hydraulic power sources and a control method thereof.
In order to achieve the above object, the technical solution of the present invention is: a multifunctional large-flow hydraulic system comprises an oil tank pump unit, a conventional valve group integrated unit and a large-flow valve group integrated unit;
the oil tank pump unit comprises an oil tank and a pump unit, the pump unit is connected with the motor, an oil inlet of the pump unit is communicated with an oil outlet of the oil tank, and an oil return port of the oil tank is communicated with a total oil return channel;
the conventional valve group integrated unit comprises a first electromagnetic ball valve, a second electromagnetic ball valve, a third electromagnetic ball valve, a first pressure reducing valve, a second pressure reducing valve, a first speed regulating valve, a second speed regulating valve and a three-position four-way electromagnetic reversing valve, wherein an oil outlet of a pump group is communicated with a first executing mechanism after passing through the first electromagnetic ball valve, the first pressure reducing valve, the first speed regulating valve, the three-position four-way electromagnetic reversing valve and a first oil inlet channel in sequence, the first executing mechanism is communicated with a total oil return channel after passing through an oil return channel and the three-position four-way electromagnetic reversing valve in sequence, the oil outlet of the pump group is communicated with a second executing mechanism after passing through the second electromagnetic ball valve, the second speed regulating valve and the second oil inlet channel in sequence, the second executing mechanism is communicated with the total oil return channel, and the oil outlet of the pump group is communicated with the third executing mechanism after passing through the third electromagnetic ball valve, the second pressure reducing valve and the third oil inlet channel in sequence;
the large-flow valve group integrated unit comprises a fourth electromagnetic ball valve, a large-diameter plug-in type two-position two-way electromagnetic valve and an energy accumulator assembly, wherein an oil outlet of the pump group is communicated with the energy accumulator assembly after passing through the fourth electromagnetic ball valve in sequence, and the energy accumulator assembly is communicated with a fourth executing mechanism after passing through the large-diameter plug-in type two-position two-way electromagnetic valve and a fourth oil inlet path in sequence, and the fourth executing mechanism is communicated with the total oil return path.
A first pressure gauge and a first pressure sensor are arranged on a pipeline between the first speed regulating valve and the three-position four-way electromagnetic reversing valve; and a second pressure gauge and a second pressure sensor are arranged on a pipeline between the second pressure reducing valve and the third oil inlet pipeline.
And a third pressure gauge and a third pressure sensor are arranged on the energy accumulator assembly.
The energy accumulator assembly is communicated with an oil return port of the oil tank through an energy accumulator oil return channel.
The oil tank pump unit further comprises a stop valve and a flexible connector, and an oil outlet of the oil tank is communicated with an oil inlet of the pump unit after passing through the stop valve and the flexible connector in sequence.
The oil tank pump unit also comprises an oil return filter and an air cooler, and an oil return port of the oil tank is communicated with the total oil return channel after passing through the oil return filter and the air cooler in sequence.
The hydraulic system also comprises a pressure control unit, wherein the pressure control unit comprises an electromagnetic overflow valve, and an oil outlet of the pump set is communicated with the total oil return channel after passing through the electromagnetic overflow valve.
The pressure control unit further comprises a fine filter, and the oil outlet of the pump set is communicated with the first electromagnetic ball valve, the second electromagnetic ball valve, the third electromagnetic ball valve and the fourth electromagnetic ball valve after sequentially passing through the fine filter.
And a fourth pressure gauge and a fourth pressure sensor are arranged on the pipeline between the fine filter and the first electromagnetic ball valve, the second electromagnetic ball valve, the third electromagnetic ball valve and the fourth electromagnetic ball valve.
A control method of a multifunctional high-flow hydraulic system, the control method comprising the steps of:
the motor drives the pump group to output hydraulic oil in the oil tank;
hydraulic oil flows into the first actuating mechanism after sequentially passing through the first electromagnetic ball valve, the first pressure reducing valve, the first speed regulating valve, the three-position four-way electromagnetic reversing valve and the first oil inlet passage, drives the first actuating mechanism to act, and hydraulic oil flowing out of the first actuating mechanism flows into the oil tank after sequentially passing through the oil return passage, the three-position four-way electromagnetic reversing valve and the total oil return passage;
the hydraulic oil flows into the second executing mechanism after sequentially passing through the second electromagnetic ball valve, the second speed regulating valve and the second oil inlet path, drives the second executing mechanism to act, and the hydraulic oil flowing out of the second executing mechanism flows into the oil tank through the total oil return path;
the hydraulic oil flows into the third actuating mechanism after sequentially passing through the third electromagnetic ball valve, the second pressure reducing valve and the third oil inlet passage, drives the third actuating mechanism to act, and the hydraulic oil flowing out of the third actuating mechanism flows into the oil tank through the total oil return passage;
hydraulic oil flows into the energy accumulator assembly through the fourth electromagnetic ball valve to charge the energy accumulator assembly, and when the pressure of the energy accumulator assembly reaches the required specified requirement, the fourth electromagnetic ball valve stops charging the energy accumulator assembly; when the pressure release flow of the energy accumulator assembly is controlled, at the moment, the large-diameter plug-in type two-position two-way electromagnetic valve is opened after being electrified, the energy accumulator assembly releases hydraulic oil, and the large-flow hydraulic oil flows into the fourth actuating mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve and the fourth oil inlet passage, so that the fourth actuating mechanism is driven to act, and the hydraulic oil flowing out of the fourth actuating mechanism flows into the oil tank through the total oil return passage.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the multifunctional large-flow hydraulic system and the control method thereof, a motor drives a pump group to output hydraulic oil in an oil tank, the hydraulic oil sequentially passes through a first electromagnetic ball valve, a first pressure reducing valve, a first speed regulating valve, a three-position four-way electromagnetic reversing valve and a first oil inlet channel and then flows into a first executing mechanism, the first executing mechanism is driven to act, the hydraulic oil sequentially passes through a second electromagnetic ball valve, a second speed regulating valve and a second oil inlet channel and then flows into a second executing mechanism, the second executing mechanism is driven to act, and the hydraulic oil sequentially passes through a third electromagnetic ball valve, a second pressure reducing valve and a third oil inlet channel and then flows into a third executing mechanism to drive a third executing mechanism to act; hydraulic oil flows into the energy accumulator assembly through the fourth electromagnetic ball valve to charge the energy accumulator assembly, and when the pressure of the energy accumulator assembly reaches the required specified requirement, the fourth electromagnetic ball valve stops charging the energy accumulator assembly; when receiving the pressure release flow of the control energy accumulator assembly, at the moment, the large-diameter plug-in type two-position two-way electromagnetic valve is opened after being electrified, the energy accumulator assembly releases hydraulic oil, and the large-flow hydraulic oil flows into the fourth executing mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve and the fourth oil inlet path to drive the fourth executing mechanism to act; in the design, the hydraulic system can provide power sources for the execution mechanisms under different working conditions in the same period, and simultaneously, can provide instantaneous large-flow power sources for the execution mechanisms under specific working conditions. Therefore, the invention can provide a hydraulic power source with large flow and can realize centralized use.
2. In the multifunctional large-flow hydraulic system and the control method thereof, a first pressure gauge and a first pressure sensor are arranged on a pipeline between a first speed regulating valve and a three-position four-way electromagnetic reversing valve; a second pressure gauge and a second pressure sensor are arranged on a pipeline between the second pressure reducing valve and the third oil inlet pipeline, and the pressure gauge and the pressure sensor are used for monitoring the system pressure; the energy accumulator component is provided with a third pressure gauge and a third pressure sensor, when the third pressure sensor detects that the pressure of the energy accumulator component meets the required specified requirement, a signal is fed back to the control system, and the control system controls the fourth electromagnetic ball valve to stop charging the energy accumulator component when the power is lost; the accumulator assembly is communicated with an oil return port of the oil tank through an accumulator oil return channel, so that safety accidents caused by long-term high pressure of the accumulator assembly are prevented. Therefore, the invention has high reliability.
3. According to the multifunctional large-flow hydraulic system and the control method thereof, an oil outlet of an oil tank is communicated with an oil inlet of a pump set after passing through a stop valve and a flexible connector in sequence, and when the pump is overhauled, the stop valve is closed to prevent oil in the oil tank from flowing out; the flexible connector is additionally arranged to prevent the motor from vibrating to cause the loosening of the pipeline; the oil return port of the oil tank is communicated with the total oil return channel after passing through the oil return filter and the wind type cooler in sequence, oil is ensured to be clean through the oil return filter, and the wind type cooler is used for cooling loop hydraulic oil. Therefore, the invention has convenient maintenance and high reliability.
4. According to the multifunctional large-flow hydraulic system and the control method thereof, the oil outlet of the pump set is communicated with the total oil return channel after passing through the electromagnetic overflow valve, and the electromagnetic overflow valve plays roles in overflow and unloading, so that the reliability of the system is improved; the oil outlet of the pump set is respectively communicated with the first electromagnetic ball valve, the second electromagnetic ball valve, the third electromagnetic ball valve and the fourth electromagnetic ball valve after sequentially passing through the fine filter, and the fine filter is used for filtering oil, so that the cleanliness of hydraulic oil can reach the requirements required by a system, and faults of a valve part and the like caused by impurities in the oil are prevented; and a fourth pressure gauge and a fourth pressure sensor are arranged on the pipeline between the fine filter and the first electromagnetic ball valve, the second electromagnetic ball valve, the third electromagnetic ball valve and the fourth electromagnetic ball valve and are used for monitoring the pressure value of the system. Therefore, the invention has high reliability.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the tank pump unit of fig. 1.
Fig. 3 is a schematic structural view of the pressure control unit in fig. 1.
Fig. 4 is a schematic view of the structure of the conventional valve block integrated unit of fig. 1.
Fig. 5 is a schematic diagram of the structure of the large-flow valve block integrated unit in fig. 1.
In the figure: the hydraulic pump unit 1, the oil tank 101, the pump unit 102, the motor 103, the total oil return channel 104, the stop valve 105, the flexible connector 106, the oil return filter 107, the wind cooler 108, the hydraulic sensor 109, the air cleaner 110, the temperature sensor 111, the liquid level meter 112, the ball valve 113, the first one-way valve 114, the pressure control unit 2, the electromagnetic relief valve 201, the fine filter 202, the fourth pressure meter 203, the fourth pressure sensor 204, the second one-way valve 205, the conventional valve integrated unit 3, the first electromagnetic ball valve 301, the second electromagnetic ball valve 302, the third electromagnetic ball valve 303, the first pressure reducing valve 304, the second pressure reducing valve 305, the first speed regulating valve 306, the second speed regulating valve 307, the three-position four-way electromagnetic reversing valve 308, the first oil inlet channel 309, the oil return channel 310, the second oil inlet channel 311, the third oil inlet channel 312, the first pressure meter 313, the first pressure sensor 314, the second pressure meter 316, the large-flow valve integrated unit 4, the fourth electromagnetic ball valve 401, the large-path plug-in two-in type two-position ball valve assembly 403, the energy accumulator assembly 305, the fourth pressure accumulator assembly 405, the third pressure accumulator assembly 406, the third pressure accumulator assembly 404, and the third pressure gauge 404.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 5, a multifunctional high-flow hydraulic system includes an oil tank pump unit 1, a conventional valve group integration unit 3, and a high-flow valve group integration unit 4;
the oil tank pump unit 1 comprises an oil tank 101 and a pump unit 102, wherein the pump unit 102 is connected with a motor 103, an oil inlet of the pump unit 102 is communicated with an oil outlet of the oil tank 101, and an oil return port of the oil tank 101 is communicated with a total oil return channel 104;
the conventional valve group integrated unit 3 comprises a first electromagnetic ball valve 301, a second electromagnetic ball valve 302, a third electromagnetic ball valve 303, a first pressure reducing valve 304, a second pressure reducing valve 305, a first speed regulating valve 306, a second speed regulating valve 307 and a three-position four-way electromagnetic reversing valve 308, wherein an oil outlet of the pump group 102 is communicated with a first executing mechanism after passing through the first electromagnetic ball valve 301, the first pressure reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic reversing valve 308 and a first oil inlet passage 309 in sequence, the first executing mechanism is communicated with a total oil return passage 104 after passing through an oil return passage 310 and the three-position four-way electromagnetic reversing valve 308 in sequence, an oil outlet of the pump group 102 is communicated with a second executing mechanism after passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet passage 311 in sequence, the second executing mechanism is communicated with the total oil return passage 104, and the oil outlet of the pump group 102 is communicated with the total oil return passage 104 after passing through the third electromagnetic ball valve 303, the second pressure reducing valve 305 and the third oil inlet passage 312 in sequence;
the large-flow valve group integration unit 4 comprises a fourth electromagnetic ball valve 401, a large-diameter plug-in two-position two-way electromagnetic valve 402 and an energy accumulator assembly 403, an oil outlet of the pump group 102 is communicated with the energy accumulator assembly 403 after passing through the fourth electromagnetic ball valve 401 in sequence, the energy accumulator assembly 403 is communicated with a fourth executing mechanism after passing through the large-diameter plug-in two-position two-way electromagnetic valve 402 and a fourth oil inlet path 404 in sequence, and the fourth executing mechanism is communicated with the total oil return path 104.
A first pressure gauge 313 and a first pressure sensor 314 are arranged on a pipeline between the first speed regulating valve 306 and the three-position four-way electromagnetic directional valve 308; a second pressure gauge 315 and a second pressure sensor 316 are installed on the pipeline between the second pressure reducing valve 305 and the third oil inlet path 312.
A third pressure gauge 405 and a third pressure sensor 406 are mounted on the accumulator assembly 403.
The accumulator assembly 403 communicates with the return port of the tank 101 via an accumulator return 407.
The oil tank pump unit 1 further comprises a stop valve 105 and a flexible connector 106, and an oil outlet of the oil tank 101 is communicated with an oil inlet of the pump unit 102 after passing through the stop valve 105 and the flexible connector 106 in sequence.
The oil tank pump unit 1 further comprises an oil return filter 107 and an air cooler 108, and an oil return port of the oil tank 101 is communicated with the total oil return channel 104 after passing through the oil return filter 107 and the air cooler 108 in sequence.
The hydraulic system further comprises a pressure control unit 2, the pressure control unit 2 comprises an electromagnetic relief valve 201, and an oil outlet of the pump set 102 is communicated with the total oil return path 104 after passing through the electromagnetic relief valve 201.
The pressure control unit 2 further comprises a fine filter 202, and oil outlets of the pump set 102 are respectively communicated with a first electromagnetic ball valve 301, a second electromagnetic ball valve 302, a third electromagnetic ball valve 303 and a fourth electromagnetic ball valve 401 after sequentially passing through the fine filter 202.
The fourth pressure gauge 203 and the fourth pressure sensor 204 are arranged on the pipeline between the fine filter 202 and the first electromagnetic ball valve 301, the second electromagnetic ball valve 302, the third electromagnetic ball valve 303 and the fourth electromagnetic ball valve 401.
A control method of a multifunctional high-flow hydraulic system, the control method comprising the steps of:
the motor 103 drives the pump set 102 to output hydraulic oil in the oil tank 101;
hydraulic oil flows into the first actuating mechanism after sequentially passing through the first electromagnetic ball valve 301, the first pressure reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic directional valve 308 and the first oil inlet passage 309, drives the first actuating mechanism to act, and the hydraulic oil flowing out of the first actuating mechanism flows into the oil tank 101 after sequentially passing through the oil return passage 310, the three-position four-way electromagnetic directional valve 308 and the total oil return passage 104;
the hydraulic oil flows into the second executing mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet path 311, drives the second executing mechanism to act, and the hydraulic oil flowing out of the second executing mechanism flows into the oil tank 101 through the total oil return path 104;
the hydraulic oil flows into the third actuating mechanism after sequentially passing through the third electromagnetic ball valve 303, the second pressure reducing valve 305 and the third oil inlet channel 312, drives the third actuating mechanism to act, and the hydraulic oil flowing out of the third actuating mechanism flows into the oil tank 101 through the total oil return channel 104;
hydraulic oil flows into the accumulator assembly 403 through the fourth electromagnetic ball valve 401 to charge the accumulator assembly 403, and when the pressure of the accumulator assembly 403 reaches the required requirement, the fourth electromagnetic ball valve 401 stops charging the accumulator assembly 403; when receiving the pressure release flow of the energy accumulator assembly 403, at this time, the large-diameter plug-in type two-position two-way electromagnetic valve 402 is opened after being electrified, the energy accumulator assembly 403 releases hydraulic oil, the large-flow hydraulic oil flows into the fourth executing mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve 402 and the fourth oil inlet path 404, the fourth executing mechanism is driven to act, and the hydraulic oil flowing out of the fourth executing mechanism flows into the oil tank 101 through the total oil return path 104.
The principle of the invention is explained as follows:
the hydraulic power source centralized control device can provide power sources for the execution mechanisms under different working conditions in the same time period, can provide instantaneous large-flow power sources for the execution mechanisms under specific working conditions, realizes the centralized control of the hydraulic power sources, and ensures that the required hydraulic power sources are provided for a plurality of execution mechanisms in the same occasion at the same time.
The main oil way of the oil tank pump group unit is hydraulic oil which is provided by the pump group for the power driving circuit and meets the total requirement of pressure and flow, and the oil return circuit can take away the heat generated by the system through a cooling medium, so that the temperature of the oil tank is ensured to be maintained within the range of design working conditions. The oil tank stores hydraulic oil required by the system; the liquid level sensor, the temperature sensor and the liquid level meter are used for storing and monitoring the state of hydraulic oil in the oil tank; the motor starts to drive a pump group (a duplex pump, namely a big pump and a small pump, which are used for outputting different flow rates and different pressures and providing hydraulic power for various execution mechanisms, so as to reduce the functional loss and save energy sources), and the hydraulic oil in the oil tank is sucked through a stop valve (closed when the pump is overhauled and the oil in the oil tank is prevented from flowing out) and a flexible connector (the motor is prevented from vibrating to cause the release of a pipeline), and the hydraulic oil is generated by the pump and is sent into a hydraulic system; the total oil return pipeline is used for receiving the hydraulic oil of the oil return pipeline of the actuating mechanism and returning the hydraulic oil to the oil tank, the hydraulic oil of the loop is cooled by the wind type cooler, and the hydraulic oil is filtered by the oil return filter to ensure that the oil is clean.
The pressure control unit is mainly used for setting the safety pressure of the system and also used for filtering impurities of the hydraulic system to ensure the cleanliness of oil liquid of the hydraulic system. The hydraulic oil output by the pump set enters through P1 'and P2', when the electromagnetic overflow valve is not electrified, the system is not loaded, the oil is directly returned to the oil tank through the oil inlet and return pipeline of the electromagnetic overflow valve, at the moment, the pump set runs in a no-load mode, and the pressure value of the system monitored by the pressure gauge and the pressure sensor is the oil return pressure; when the electromagnetic overflow valve is powered on, the system is loaded, at the moment, the pump set is loaded, and hydraulic oil enters the system after passing through a fine filter (used for filtering oil, so that the cleanliness of the hydraulic oil can reach the requirements required by the system, and faults of a valve part and the like caused by impurities in the oil are prevented).
The conventional valve group integrated unit mainly forms a plurality of branch circuits through a pressure valve, a direction valve and a flow valve, the flow and the pressure of each branch circuit are different, and the valve can be controlled to be opened and closed to provide sufficient hydraulic oil for various execution mechanisms under different working conditions. The conventional valve group integrated unit of the design is divided into 5 branches, and sufficient hydraulic power sources are respectively provided for 5 relatively independent actuating mechanisms. First actuator (1 and 2): the hydraulic oil flows into an electromagnetic ball valve (electricity is obtained) and a pressure reducing valve (the pressure is set to be in a pressure range required by an actuating mechanism) through a pressure regulating valve (the flow is set to be in a flow range required by the actuating mechanism), flows into an electromagnetic reversing valve (electricity is obtained at the left position or the right position) through a speed regulating valve (the flow is set to be in a flow range required by the actuating mechanism) and flows out to an oil inlet path 1 and an oil inlet path 2 to supply the required hydraulic oil to a first actuating mechanism 1 and 2 respectively, the actuating mechanism is driven to act, and returns to an oil tank after being gathered through an oil return path 1 and a return path 2, so that the normal movement of the actuating mechanism is ensured by an open closed-loop system; second actuator (3 and 4): the hydraulic oil flows into an electromagnetic ball valve (power is supplied) under the same working condition with consistent pressure requirements, flows into second execution mechanisms 3 and 4 through a speed regulating valve (the flow is set to be the flow range required by the execution mechanisms), drives the execution mechanisms to act, and flows back to an oil tank after being summarized to a total oil return path through an execution mechanism oil path; third actuator (5): the hydraulic oil flows into an electromagnetic ball valve (power is supplied) and then flows into a third actuating mechanism 5 through a pressure reducing valve (the pressure is set to be the pressure range required by the actuating mechanism) under the working condition that the pressure requirement is different from that of the second actuating mechanisms 3 and 4, the actuating mechanism is driven to act, and the actuating mechanism oil way is summarized to a total oil return way to the oil tank.
The large-flow valve group integration unit is mainly used for realizing the pressurization of the energy accumulator assembly by controlling the opening and closing of the valve element, and instantly providing large-flow hydraulic oil for the executing mechanism by the opening and closing of the valve element when the pressure of the energy accumulator assembly reaches the required pressure; when the accumulator assembly is in a standby state after being pressurized, if the follow-up working condition action is canceled due to other reasons, a manual stop valve (normally closed) below the accumulator assembly is opened at the moment, hydraulic oil in the accumulator assembly can directly flow back to the oil tank through an oil return pipeline, and safety accidents caused by long-term high pressure of the accumulator assembly are prevented. Fourth actuator (6): hydraulic oil flows into the energy accumulator assembly through the electromagnetic ball valve (power is obtained) to charge the energy accumulator assembly, and when the pressure of the energy accumulator assembly reaches the required specified requirement, a pressure sensor feeds back a signal to a control system, and at the moment, the electromagnetic ball valve (power is lost) stops charging the energy accumulator assembly; when the pressure release flow of the energy accumulator assembly is received and controlled, the large-diameter plug-in type two-position two-way electromagnetic valve is powered on, the electromagnetic valve is opened, the energy accumulator assembly instantaneously releases pressure oil, large-flow hydraulic oil is provided for the fourth actuating mechanism 6, the actuating mechanism is driven to act, the actuating mechanism oil way is summarized to the total oil return way to return to the oil tank, and the quick action of the actuating mechanism is ensured.
Example 1:
referring to fig. 1 to 5, a multifunctional high-flow hydraulic system includes an oil tank pump unit 1, a conventional valve group integration unit 3, and a high-flow valve group integration unit 4;
the oil tank pump unit 1 comprises an oil tank 101 and a pump unit 102, wherein the pump unit 102 is connected with a motor 103, an oil inlet of the pump unit 102 is communicated with an oil outlet of the oil tank 101, and an oil return port of the oil tank 101 is communicated with a total oil return channel 104;
the conventional valve group integrated unit 3 comprises a first electromagnetic ball valve 301, a second electromagnetic ball valve 302, a third electromagnetic ball valve 303, a first pressure reducing valve 304, a second pressure reducing valve 305, a first speed regulating valve 306, a second speed regulating valve 307 and a three-position four-way electromagnetic reversing valve 308, wherein an oil outlet of the pump group 102 is communicated with a first executing mechanism after passing through the first electromagnetic ball valve 301, the first pressure reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic reversing valve 308 and a first oil inlet passage 309 in sequence, the first executing mechanism is communicated with a total oil return passage 104 after passing through an oil return passage 310 and the three-position four-way electromagnetic reversing valve 308 in sequence, an oil outlet of the pump group 102 is communicated with a second executing mechanism after passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet passage 311 in sequence, the second executing mechanism is communicated with the total oil return passage 104, and the oil outlet of the pump group 102 is communicated with the total oil return passage 104 after passing through the third electromagnetic ball valve 303, the second pressure reducing valve 305 and the third oil inlet passage 312 in sequence;
the large-flow valve group integration unit 4 comprises a fourth electromagnetic ball valve 401, a large-diameter plug-in two-position two-way electromagnetic valve 402 and an energy accumulator assembly 403, an oil outlet of the pump group 102 is communicated with the energy accumulator assembly 403 after passing through the fourth electromagnetic ball valve 401 in sequence, the energy accumulator assembly 403 is communicated with a fourth executing mechanism after passing through the large-diameter plug-in two-position two-way electromagnetic valve 402 and a fourth oil inlet path 404 in sequence, and the fourth executing mechanism is communicated with the total oil return path 104.
According to the scheme, the control method of the multifunctional high-flow hydraulic system comprises the following steps of:
the motor 103 drives the pump set 102 to output hydraulic oil in the oil tank 101;
hydraulic oil flows into the first actuating mechanism after sequentially passing through the first electromagnetic ball valve 301, the first pressure reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic directional valve 308 and the first oil inlet passage 309, drives the first actuating mechanism to act, and the hydraulic oil flowing out of the first actuating mechanism flows into the oil tank 101 after sequentially passing through the oil return passage 310, the three-position four-way electromagnetic directional valve 308 and the total oil return passage 104;
the hydraulic oil flows into the second executing mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet path 311, drives the second executing mechanism to act, and the hydraulic oil flowing out of the second executing mechanism flows into the oil tank 101 through the total oil return path 104;
the hydraulic oil flows into the third actuating mechanism after sequentially passing through the third electromagnetic ball valve 303, the second pressure reducing valve 305 and the third oil inlet channel 312, drives the third actuating mechanism to act, and the hydraulic oil flowing out of the third actuating mechanism flows into the oil tank 101 through the total oil return channel 104;
hydraulic oil flows into the accumulator assembly 403 through the fourth electromagnetic ball valve 401 to charge the accumulator assembly 403, and when the pressure of the accumulator assembly 403 reaches the required requirement, the fourth electromagnetic ball valve 401 stops charging the accumulator assembly 403; when receiving the pressure release flow of the energy accumulator assembly 403, at this time, the large-diameter plug-in type two-position two-way electromagnetic valve 402 is opened after being electrified, the energy accumulator assembly 403 releases hydraulic oil, the large-flow hydraulic oil flows into the fourth executing mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve 402 and the fourth oil inlet path 404, the fourth executing mechanism is driven to act, and the hydraulic oil flowing out of the fourth executing mechanism flows into the oil tank 101 through the total oil return path 104.
Example 2:
the basic content is the same as in example 1, except that:
a first pressure gauge 313 and a first pressure sensor 314 are arranged on a pipeline between the first speed regulating valve 306 and the three-position four-way electromagnetic directional valve 308; a second pressure gauge 315 and a second pressure sensor 316 are installed on the pipeline between the second pressure reducing valve 305 and the third oil inlet path 312; a third pressure gauge 405 and a third pressure sensor 406 are mounted on the accumulator assembly 403.
Example 3:
the basic content is the same as in example 1, except that:
the accumulator assembly 403 communicates with the return port of the tank 101 via an accumulator return 407.
Example 4:
the basic content is the same as in example 1, except that:
the oil tank pump unit 1 further comprises a stop valve 105 and a flexible connector 106, and an oil outlet of the oil tank 101 is communicated with an oil inlet of the pump unit 102 after passing through the stop valve 105 and the flexible connector 106 in sequence; the oil tank pump unit 1 further comprises an oil return filter 107 and an air cooler 108, and an oil return port of the oil tank 101 is communicated with the total oil return channel 104 after passing through the oil return filter 107 and the air cooler 108 in sequence.
Example 5:
the basic content is the same as in example 1, except that:
the hydraulic system further comprises a pressure control unit 2, wherein the pressure control unit 2 comprises an electromagnetic relief valve 201, and an oil outlet of the pump set 102 is communicated with the total oil return path 104 after passing through the electromagnetic relief valve 201; the pressure control unit 2 further comprises a fine filter 202, and the oil outlet of the pump set 102 is respectively communicated with a first electromagnetic ball valve 301, a second electromagnetic ball valve 302, a third electromagnetic ball valve 303 and a fourth electromagnetic ball valve 401 after passing through the fine filter 202 in sequence; the fourth pressure gauge 203 and the fourth pressure sensor 204 are arranged on the pipeline between the fine filter 202 and the first electromagnetic ball valve 301, the second electromagnetic ball valve 302, the third electromagnetic ball valve 303 and the fourth electromagnetic ball valve 401.
Claims (4)
1. The multifunctional large-flow hydraulic system is characterized by comprising an oil tank pump unit (1), a conventional valve group integration unit (3) and a large-flow valve group integration unit (4);
the oil tank pump unit (1) comprises an oil tank (101) and a pump unit (102), wherein the pump unit (102) is connected with a motor (103), an oil inlet of the pump unit (102) is communicated with an oil outlet of the oil tank (101), and an oil return port of the oil tank (101) is communicated with a total oil return channel (104); the oil tank pump unit (1) further comprises a stop valve (105) and a flexible connector (106), and an oil outlet of the oil tank (101) is communicated with an oil inlet of the pump unit (102) after passing through the stop valve (105) and the flexible connector (106) in sequence; the oil tank pump unit (1) further comprises an oil return filter (107) and an air cooler (108), and an oil return port of the oil tank (101) is communicated with the total oil return channel (104) after passing through the oil return filter (107) and the air cooler (108) in sequence;
the conventional valve group integrated unit (3) comprises a first electromagnetic ball valve (301), a second electromagnetic ball valve (302), a third electromagnetic ball valve (303), a first pressure reducing valve (304), a second pressure reducing valve (305), a first speed regulating valve (306), a second speed regulating valve (307) and a three-position four-way electromagnetic reversing valve (308), wherein an oil outlet of a pump group (102) is sequentially communicated with a first executing mechanism after passing through the first electromagnetic ball valve (301), the first pressure reducing valve (304), the first speed regulating valve (306), the three-position four-way electromagnetic reversing valve (308) and a first oil inlet channel (309), the first executing mechanism is sequentially communicated with a total oil return channel (104) after passing through an oil return channel (310) and the three-position four-way electromagnetic reversing valve (308), an oil outlet of the pump group (102) is sequentially communicated with a second executing mechanism after passing through the second electromagnetic ball valve (302), the second speed regulating valve (307) and the second oil inlet channel (311), the second executing mechanism is sequentially communicated with the total oil return channel (104), and the oil outlet of the pump group (102) is sequentially communicated with the third executing mechanism (312) after passing through the third electromagnetic ball valve (303), the second pressure reducing valve (305) and the third executing mechanism;
the large-flow valve group integrated unit (4) comprises a fourth electromagnetic ball valve (401), a large-path plug-in two-position two-way electromagnetic valve (402) and an energy accumulator assembly (403), wherein an oil outlet of the pump group (102) is communicated with the energy accumulator assembly (403) after passing through the fourth electromagnetic ball valve (401) in sequence, and the energy accumulator assembly (403) is communicated with a fourth executing mechanism after passing through the large-path plug-in two-position two-way electromagnetic valve (402) and a fourth oil inlet path (404) in sequence, and the fourth executing mechanism is communicated with the total oil return path (104); the energy accumulator assembly (403) is communicated with an oil return port of the oil tank (101) through an energy accumulator oil return path (407);
the hydraulic system further comprises a pressure control unit (2), the pressure control unit (2) comprises an electromagnetic overflow valve (201), and an oil outlet of the pump set (102) is communicated with the total oil return channel (104) after passing through the electromagnetic overflow valve (201); the pressure control unit (2) further comprises a fine filter (202), and the oil outlet of the pump set (102) is respectively communicated with a first electromagnetic ball valve (301), a second electromagnetic ball valve (302), a third electromagnetic ball valve (303) and a fourth electromagnetic ball valve (401) after sequentially passing through the fine filter (202); and a fourth pressure gauge (203) and a fourth pressure sensor (204) are arranged on the pipeline between the fine filter (202) and the first electromagnetic ball valve (301), the second electromagnetic ball valve (302), the third electromagnetic ball valve (303) and the fourth electromagnetic ball valve (401).
2. A multi-function, high flow hydraulic system as claimed in claim 1, wherein: a first pressure gauge (313) and a first pressure sensor (314) are arranged on a pipeline between the first speed regulating valve (306) and the three-position four-way electromagnetic reversing valve (308); a second pressure gauge (315) and a second pressure sensor (316) are arranged on a pipeline between the second pressure reducing valve (305) and the third oil inlet pipeline (312).
3. A multi-function, high flow hydraulic system as claimed in claim 1, wherein: a third pressure gauge (405) and a third pressure sensor (406) are mounted on the accumulator assembly (403).
4. A method of controlling a multi-functional high flow hydraulic system as set forth in claim 1, wherein: the control method comprises the following steps:
the motor (103) drives the pump set (102) to output hydraulic oil in the oil tank (101);
hydraulic oil flows into the first actuating mechanism after sequentially passing through the first electromagnetic ball valve (301), the first pressure reducing valve (304), the first speed regulating valve (306), the three-position four-way electromagnetic directional valve (308) and the first oil inlet path (309), drives the first actuating mechanism to act, and the hydraulic oil flowing out of the first actuating mechanism flows into the oil tank (101) after sequentially passing through the oil return path (310), the three-position four-way electromagnetic directional valve (308) and the total oil return path (104);
the hydraulic oil flows into a second executing mechanism after sequentially passing through a second electromagnetic ball valve (302), a second speed regulating valve (307) and a second oil inlet path (311), so as to drive the second executing mechanism to act, and the hydraulic oil flowing out of the second executing mechanism flows into an oil tank (101) through a total oil return path (104);
the hydraulic oil flows into a third actuating mechanism after sequentially passing through a third electromagnetic ball valve (303), a second pressure reducing valve (305) and a third oil inlet channel (312), so as to drive the third actuating mechanism to act, and the hydraulic oil flowing out of the third actuating mechanism flows into an oil tank (101) through a total oil return channel (104);
hydraulic oil flows into the accumulator assembly (403) through the fourth electromagnetic ball valve (401) to charge the accumulator assembly (403), and when the pressure of the accumulator assembly (403) reaches the required specified requirement, the fourth electromagnetic ball valve (401) stops charging the accumulator assembly (403); when the pressure release flow of the energy accumulator assembly (403) is controlled, at the moment, the large-diameter plug-in type two-position two-way electromagnetic valve (402) is opened after being electrified, the energy accumulator assembly (403) releases hydraulic oil, and the large-flow hydraulic oil flows into the fourth actuating mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve (402) and the fourth oil inlet path (404), so as to drive the fourth actuating mechanism to act, and the hydraulic oil flowing out of the fourth actuating mechanism flows into the oil tank (101) through the total oil return path (104).
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| CN114033775A (en) | 2022-02-11 |
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