CN114033775A - Multifunctional high-flow hydraulic system and control method thereof - Google Patents
Multifunctional high-flow hydraulic system and control method thereof Download PDFInfo
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- CN114033775A CN114033775A CN202111392656.9A CN202111392656A CN114033775A CN 114033775 A CN114033775 A CN 114033775A CN 202111392656 A CN202111392656 A CN 202111392656A CN 114033775 A CN114033775 A CN 114033775A
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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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Abstract
A multifunctional high-flow hydraulic system comprises an oil tank pump unit, a pressure control unit, a conventional valve set integration unit and a high-flow valve set integration unit, wherein the oil tank pump unit comprises an oil tank and a pump set, the conventional valve set integration unit comprises an electromagnetic ball valve, a pressure reducing valve, a speed regulating valve and a three-position four-way electromagnetic reversing valve, the high-flow valve set integration unit comprises an electromagnetic ball valve, the pump set is communicated with the first execution mechanism after sequentially passing through the first electromagnetic ball valve, the first pressure reducing valve, the first speed regulating valve and the three-position four-way electromagnetic reversing valve, the pump set is communicated with the second execution mechanism after sequentially passing through the second electromagnetic ball valve and the second speed regulating valve, the pump set is communicated with the third execution mechanism after sequentially passing through the third electromagnetic ball valve and the second pressure reducing valve, the pump set is communicated with the accumulator assembly after passing through the fourth electromagnetic ball valve, and the accumulator assembly is communicated with the fourth execution mechanism after passing through the two-position two-way electromagnetic valve. The design can provide a large flow and can realize a hydraulic power source for centralized use.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a multifunctional large-flow hydraulic system and a control method thereof, which are mainly suitable for providing a large-flow hydraulic power source capable of realizing centralized use.
Background
The hydraulic control technology field is widely applied to various industries, such as machine tool industry, metallurgy industry, engineering machinery, agricultural machinery, automobile industry, light textile industry, ship industry and other civilian 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 relating 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 a power source for the actuating mechanisms under different working conditions at the same time period, and can not provide a power source with instantaneous large flow for the actuating 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 high-flow hydraulic system which has high flow and can realize a hydraulic power source used in a centralized way and a control method thereof.
In order to achieve the above purpose, the technical solution of the invention is as follows: a multifunctional high-flow hydraulic system comprises an oil tank pump unit, a conventional valve group integrated unit and a high-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 main oil return path;
the conventional valve set integration 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, the oil outlet of the pump group is communicated with a first actuating mechanism after sequentially passing through a first electromagnetic ball valve, a first pressure reducing valve, a first speed regulating valve, a three-position four-way electromagnetic directional valve and a first oil inlet path, the first actuating mechanism is communicated with a main oil return path after sequentially passing through an oil return path and the three-position four-way electromagnetic directional valve, the oil outlet of the pump group is communicated with a second actuating mechanism after passing through a second electromagnetic ball valve, a second speed regulating valve and a second oil inlet path in sequence, the second actuating mechanism is communicated with a total oil return path, an oil outlet of the pump group is communicated with a third execution mechanism through a third electromagnetic ball valve, a second pressure reducing valve and a third oil inlet channel in sequence, and the third execution mechanism is communicated with a main oil return channel;
the high-flow valve group integrated unit comprises a fourth electromagnetic ball valve, a large-path plug-in type two-position two-way electromagnetic valve and an energy accumulator assembly, an oil outlet of the pump group is communicated with the energy accumulator assembly after sequentially passing through the fourth electromagnetic ball valve, the energy accumulator assembly is communicated with a fourth execution mechanism after sequentially passing through the large-path plug-in type two-position two-way electromagnetic valve and a fourth oil inlet path, and the fourth execution mechanism is communicated with a 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 directional valve; and a second pressure gauge and a second pressure sensor are mounted on a pipeline between the second pressure reducing valve and the third oil inlet way.
And a third pressure gauge and a third pressure sensor are mounted on the energy accumulator assembly.
And the energy accumulator component is communicated with an oil return port of the oil tank through an energy accumulator oil return path.
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 sequentially passing through the stop valve and the flexible connector.
The oil tank pump unit further comprises an oil return filter and an air cooler, and an oil return port of the oil tank is communicated with a total oil return path after sequentially passing through the oil return filter and the air cooler.
The hydraulic system further comprises a pressure control unit, the pressure control unit comprises an electromagnetic overflow valve, and an oil outlet of the pump set is communicated with the main oil return path after passing through the electromagnetic overflow valve.
The pressure control unit further comprises a fine filter, and an 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 respectively after sequentially passing through the fine filter.
And a fourth pressure gauge and a fourth pressure sensor are arranged on pipelines 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 comprises the following steps:
the motor drives the pump set to output the hydraulic oil in the oil tank;
hydraulic oil sequentially flows into a first actuating mechanism through a first electromagnetic ball valve, a first pressure reducing valve, a first speed regulating valve, a three-position four-way electromagnetic directional valve and a first oil inlet path to drive the first actuating mechanism to act, and the hydraulic oil flowing out of the first actuating mechanism sequentially flows into an oil tank through an oil return path, the three-position four-way electromagnetic directional valve and a main oil return path;
hydraulic oil flows into a second actuating mechanism after sequentially passing through a second electromagnetic ball valve, a second speed regulating valve and a second oil inlet circuit to drive the second actuating mechanism to act, and the hydraulic oil flowing out of the second actuating mechanism flows into an oil tank through a main oil return circuit;
hydraulic oil flows into a third actuating mechanism after sequentially passing through a third electromagnetic ball valve, a second pressure reducing valve and a third oil inlet way, the third actuating mechanism is driven to act, and the hydraulic oil flowing out of the third actuating mechanism flows into an oil tank through a main oil return way;
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 a pressure releasing flow for controlling the energy accumulator assembly is received, at the moment, the large-path plug-in type two-position two-way electromagnetic valve is powered on and then is opened, the energy accumulator assembly releases hydraulic oil, large-flow hydraulic oil sequentially flows into the fourth execution mechanism after passing through the large-path plug-in type two-position two-way electromagnetic valve and the fourth oil inlet path, the fourth execution mechanism is driven to act, and hydraulic oil flowing out of the fourth execution mechanism flows into the oil tank through the total oil return path.
Compared with the prior art, the invention has the beneficial effects that:
1. in the multifunctional large-flow hydraulic system and the control method thereof, a motor drives a pump set to output hydraulic oil in an oil tank, the hydraulic oil flows into a first execution mechanism after sequentially passing through a first electromagnetic ball valve, a first pressure reducing valve, a first speed regulating valve, a three-position four-way electromagnetic directional valve and a first oil inlet path to drive the first execution mechanism to act, the hydraulic oil flows into a second execution mechanism after sequentially passing through a second electromagnetic ball valve, a second speed regulating valve and a second oil inlet path to drive the second execution mechanism to act, and the hydraulic oil flows into a third execution mechanism after sequentially passing through a third electromagnetic ball valve, a second pressure reducing valve and a third oil inlet path to drive the third execution 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 a pressure release flow for controlling the energy accumulator assembly is received, at the moment, the large-path plug-in type two-position two-way electromagnetic valve is powered on and then opened, the energy accumulator assembly releases hydraulic oil, and the large-flow hydraulic oil flows into the fourth execution mechanism after sequentially passing through the large-path plug-in type two-position two-way electromagnetic valve and the fourth oil inlet path to drive the fourth execution mechanism to act; in the design, the hydraulic system can provide power sources for the actuating mechanisms under different working conditions at the same time period, and meanwhile, the hydraulic system can also provide a power source with instantaneous large flow for the actuating mechanisms under specific working conditions. Therefore, the hydraulic power source can provide large flow and realize centralized use.
2. In the multifunctional high-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 directional valve; a second pressure gauge and a second pressure sensor are mounted on a pipeline between the second pressure reducing valve and the third oil inlet way, and the pressure gauge and the pressure sensor are used for monitoring the system pressure; a third pressure gauge and a third pressure sensor are installed on the energy accumulator assembly, when the third pressure sensor detects that the pressure of the energy accumulator assembly 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 lose power and stop charging the energy accumulator assembly; the energy accumulator component is communicated with an oil return port of the oil tank through an energy accumulator oil return path, so that safety accidents caused by long-term high pressure of the energy accumulator component are prevented. Therefore, the invention has high reliability.
3. In the multifunctional high-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 sequentially passing through a stop valve and a flexible connector, and when a 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 pipeline from loosening caused by the vibration of the motor; the oil return port of the oil tank is communicated with the main oil return path after sequentially passing through the oil return filter and the air cooler, the oil is guaranteed to be clean through the oil return filter, and the return hydraulic oil is cooled through the air cooler. Therefore, the invention has convenient maintenance and high reliability.
4. In the multifunctional high-flow hydraulic system and the control method thereof, the oil outlet of the pump set is communicated with the main oil return path after passing through the electromagnetic overflow valve, and the electromagnetic overflow valve plays roles of overflowing and unloading, thereby improving the reliability of the system; an oil outlet of the pump set is sequentially communicated with the first electromagnetic ball valve, the second electromagnetic ball valve, the third electromagnetic ball valve and the fourth electromagnetic ball valve after passing through a fine filter, and the fine filter is used for filtering oil liquid, so that the cleanliness of the hydraulic oil can meet the requirement required by a system, and faults of valves and the like caused by impurities in the oil liquid are prevented; and a fourth pressure meter and a fourth pressure sensor are arranged on pipelines 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 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 oil tank pump unit of fig. 1.
Fig. 3 is a schematic view of the structure of the pressure control unit of fig. 1.
Fig. 4 is a schematic structural view of the conventional valve block integration unit of fig. 1.
Fig. 5 is a schematic structural diagram of the large flow valve block integrated unit in fig. 1.
In the figure: the system comprises an oil tank and pump group unit 1, an oil tank 101, a pump group 102, a motor 103, a total oil return path 104, a stop valve 105, a flexible connector 106, an oil return filter 107, a wind cooler 108, a hydraulic sensor 109, an air filter 110, a temperature sensor 111, a liquid level meter 112, a ball valve 113, a first check valve 114, a pressure control unit 2, an electromagnetic overflow valve 201, a fine filter 202, a fourth pressure gauge 203, a fourth pressure sensor 204, a second check valve 205, a conventional valve group integrated unit 3, 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, a three-position four-way electromagnetic directional valve 308, a first oil inlet path 309, an oil return path 310, a second oil inlet path 311, a third oil inlet path 312, a first pressure gauge 313, a first pressure sensor 314, a second pressure gauge 315, a second pressure sensor 316, a third pressure gauge 316, a fourth pressure gauge 203, a fourth pressure sensor 205, a fourth pressure sensor, The high-flow valve group integrated unit 4, a fourth electromagnetic ball valve 401, a large-diameter plug-in two-position two-way electromagnetic valve 402, an energy accumulator assembly 403, a fourth oil inlet path 404, a third pressure gauge 405, a third pressure sensor 406 and an energy accumulator oil return path 407.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 5, a multifunctional high flow hydraulic system includes an oil tank pump unit 1, a conventional valve set integration unit 3, and a high flow valve set integration unit 4;
the oil tank pump set unit 1 comprises an oil tank 101 and a pump set 102, the pump set 102 is connected with a motor 103, an oil inlet of the pump set 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 main oil return path 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 reducing valve 304, a second 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 execution mechanism after sequentially passing through the first electromagnetic ball valve 301, the first reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic reversing valve 308 and a first oil inlet path 309, the first execution mechanism is communicated with a main oil return path 104 after sequentially passing through an oil return path 310 and the three-position four-way electromagnetic reversing valve 308, an oil outlet of the pump group 102 is communicated with a second execution mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and a second oil inlet path 311, the second execution mechanism is communicated with the main oil return path 104, and an oil outlet of the pump group 102 sequentially passes through the third electromagnetic ball valve 303, the second reducing valve 305, the third electromagnetic ball valve 303, the second reducing valve 305, the third electromagnetic ball valve 307, the third speed regulating valve 307 and the third oil outlet of the third oil return path 308 are communicated with the total oil return path 308, the total oil return path 104, The third oil inlet path 312 is communicated with a third actuating mechanism, and the third actuating mechanism is communicated with the main oil return path 104;
the large-flow valve group integrated unit 4 comprises a fourth electromagnetic ball valve 401, a large-path plug-in type 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 sequentially passing through the fourth electromagnetic ball valve 401, the energy accumulator assembly 403 is communicated with a fourth execution mechanism after sequentially passing through the large-path plug-in type two-position two-way electromagnetic valve 402 and a fourth oil inlet 404, and the fourth execution mechanism is communicated with a 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 a pipe between the second pressure reducing valve 305 and the third oil inlet passage 312.
A third pressure gauge 405 and a third pressure sensor 406 are mounted to the accumulator assembly 403.
The accumulator assembly 403 communicates with the oil return of the oil tank 101 via an accumulator oil 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 sequentially passing through the stop valve 105 and the flexible connector 106.
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 path 104 sequentially through the oil return filter 107 and the air cooler 108.
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 unit 102 is communicated with the main oil return path 104 through the electromagnetic overflow valve 201.
The pressure control unit 2 further comprises a fine filter 202, and an oil outlet of the pump unit 102 sequentially passes through the fine filter 202 and then 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.
And a fourth pressure gauge 203 and a fourth pressure sensor 204 are arranged on pipelines 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 comprises the following steps:
the motor 103 drives the pump set 102 to output the hydraulic oil in the oil tank 101;
hydraulic oil sequentially flows into the first execution mechanism 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 to drive the first execution mechanism to act, and the hydraulic oil flowing out of the first execution mechanism sequentially flows into the oil tank 101 through the oil return path 310, the three-position four-way electromagnetic directional valve 308 and the main oil return path 104;
the hydraulic oil flows into the second execution mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet path 311, the second execution mechanism is driven to act, and the hydraulic oil flowing out of the second execution mechanism flows into the oil tank 101 through the main 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 reducing valve 305 and the third oil inlet path 312, the third actuating mechanism is driven to act, and the hydraulic oil flowing out of the third actuating mechanism flows into the oil tank 101 through the main oil return path 104;
hydraulic oil flows into the energy accumulator component 403 through the fourth electromagnetic ball valve 401 to charge the energy accumulator component 403, and when the pressure of the energy accumulator component 403 reaches the required specified requirement, the fourth electromagnetic ball valve 401 stops charging the energy accumulator component 403; when a pressure releasing flow of the control energy accumulator assembly 403 is received, at this time, the large-diameter plug-in type two-position two-way electromagnetic valve 402 is powered on and then opened, the energy accumulator assembly 403 releases hydraulic oil, large-flow hydraulic oil flows into the fourth execution mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve 402 and the fourth oil inlet 404, the fourth execution mechanism is driven to act, and hydraulic oil flowing out of the fourth execution mechanism flows into the oil tank 101 through the main oil return path 104.
The principle of the invention is illustrated as follows:
this design can provide the power supply for the actuating mechanism of different operating modes at same period, still can provide instantaneous large-traffic power supply for the actuating mechanism of specific operating mode simultaneously, realizes hydraulic power source centralized control, guarantees to provide required hydraulic power source for a plurality of actuating mechanisms of same occasion simultaneously.
The main oil circuit of the oil tank pump unit is hydraulic oil which is provided by the pump unit for a power driving loop and meets the overall requirement on pressure and flow, and the oil return circuit can take away heat generated by the system through a cooling medium, so that the temperature of the oil tank is maintained within the range of the designed working condition. 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 is started to drive a pump set (a duplex pump, namely a big pump and a small pump, which are used for outputting different flow and different pressure, and providing hydraulic power for various actuating mechanisms, so that the functional loss is reduced, and the energy is saved), hydraulic oil in an oil tank is sucked through a stop valve (which is closed when the pump is overhauled and prevents the oil in the oil tank from flowing out) and a flexible connector (which prevents a pipeline from loosening caused by the vibration of the motor), and the hydraulic oil generated by the pump outlet is sent into a hydraulic system; the main oil return pipeline is used for receiving hydraulic oil of an oil return circuit of the execution mechanism to flow back to the oil tank, and the hydraulic oil of the circuit is cooled by the air cooler and filtered by the oil return filter to ensure that the oil is clean.
The pressure control unit is mainly used for setting the safe pressure of the system and simultaneously filtering impurities in the hydraulic system to ensure the cleanliness of oil in the hydraulic system. 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 directly enters an oil return pipeline through the electromagnetic overflow valve and returns to an oil tank, the pump set operates in no-load mode at the moment, and system pressure values monitored by a pressure gauge and a pressure sensor are oil return pressure; when the electromagnetic overflow valve is electrified, the system is loaded, the pump set is loaded at the moment, and the hydraulic oil enters the system after passing through a fine filter (used for filtering oil liquid, so that the cleanliness of the hydraulic oil can meet the requirement required by the system, and the faults of valves and the like caused by impurities in the oil liquid are prevented).
The conventional valve set integration unit mainly forms a plurality of branch paths by combining a pressure valve, a directional valve and a flow valve, the flow and the pressure of each branch path are different, and sufficient hydraulic oil can be provided for various actuating mechanisms under different working conditions by controlling the opening and closing of a valve element. The conventional valve group integrated unit is divided into 5 branches, and sufficient hydraulic power sources are provided for 5 relatively independent actuating mechanisms respectively. First actuators (1 and 2): the hydraulic oil flows into an electromagnetic ball valve (power is obtained) and a pressure reducing valve (pressure is set to be within a pressure range required by an actuating mechanism), then branches flow into an electromagnetic reversing valve (left-position or right-position power is obtained) through a speed regulating valve (flow is set to be within a flow range required by the actuating mechanism), flows out to an oil inlet circuit 1 and an oil inlet circuit 2 to respectively supply the required hydraulic oil for the first actuating mechanism 1 and the first actuating mechanism 2, drives the actuating mechanism to act, then flows to an oil return circuit through the oil return circuits 1 and 2, is gathered and then flows back to an oil tank, and an open closed-loop system is formed to ensure the normal movement of the actuating mechanism; second actuator (3 and 4): the hydraulic oil flows into the electromagnetic ball valve (to be electrified) and then flows into the second actuating mechanisms 3 and 4 through the speed regulating valve (the flow is set to be the flow range required by the actuating mechanism) to drive the actuating mechanisms to act, and then is gathered to a total oil return circuit through the oil circuit of the actuating mechanisms to flow back to the oil tank; third actuator (5): the hydraulic oil flows into an electromagnetic ball valve (power is obtained) and then flows into a third execution mechanism 5 through a pressure reducing valve (the pressure is set to be within the pressure range required by the execution mechanism) to drive the execution mechanism to act, and the oil paths of the execution mechanism are gathered to a total oil return path and then flow back to an oil tank.
The high-flow valve group integrated unit is mainly used for realizing the pressurization of the energy accumulator assembly by controlling the opening and closing of the valve member, and instantly providing high-flow hydraulic oil for the actuating mechanism by opening and closing the valve member when the pressure of the energy accumulator assembly reaches the required pressure; the accumulator assembly is in a standby state after being pressurized, if follow-up working conditions are cancelled due to other reasons, a manual stop valve (normally closed) below the accumulator assembly is opened, hydraulic oil in the accumulator assembly can directly flow back to an 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 electromagnetic ball valve (power is obtained) to the energy accumulator assembly to charge the energy accumulator assembly, when the pressure of the energy accumulator assembly reaches the required specified requirement, the pressure sensor feeds back a signal to the control system, and the electromagnetic ball valve (power loss) stops charging the energy accumulator assembly; when the pressure releasing flow of the energy accumulator assembly is received and controlled, the large-drift-diameter plug-in type two-position two-way electromagnetic valve is electrified, the electromagnetic valve is opened, the energy accumulator assembly releases pressure oil instantly, large-flow hydraulic oil is provided for the fourth executing mechanism 6, the executing mechanism is driven to act, the oil circuit of the executing mechanism is gathered to the main oil return circuit and flows back to the oil tank, and the quick action of the executing mechanism is guaranteed.
Example 1:
referring to fig. 1 to 5, a multifunctional high flow hydraulic system includes an oil tank pump unit 1, a conventional valve set integration unit 3, and a high flow valve set integration unit 4;
the oil tank pump set unit 1 comprises an oil tank 101 and a pump set 102, the pump set 102 is connected with a motor 103, an oil inlet of the pump set 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 main oil return path 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 reducing valve 304, a second 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 execution mechanism after sequentially passing through the first electromagnetic ball valve 301, the first reducing valve 304, the first speed regulating valve 306, the three-position four-way electromagnetic reversing valve 308 and a first oil inlet path 309, the first execution mechanism is communicated with a main oil return path 104 after sequentially passing through an oil return path 310 and the three-position four-way electromagnetic reversing valve 308, an oil outlet of the pump group 102 is communicated with a second execution mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and a second oil inlet path 311, the second execution mechanism is communicated with the main oil return path 104, and an oil outlet of the pump group 102 sequentially passes through the third electromagnetic ball valve 303, the second reducing valve 305, the third electromagnetic ball valve 303, the second reducing valve 305, the third electromagnetic ball valve 307, the third speed regulating valve 307 and the third oil outlet of the third oil return path 308 are communicated with the total oil return path 308, the total oil return path 104, The third oil inlet path 312 is communicated with a third actuating mechanism, and the third actuating mechanism is communicated with the main oil return path 104;
the large-flow valve group integrated unit 4 comprises a fourth electromagnetic ball valve 401, a large-path plug-in type 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 sequentially passing through the fourth electromagnetic ball valve 401, the energy accumulator assembly 403 is communicated with a fourth execution mechanism after sequentially passing through the large-path plug-in type two-position two-way electromagnetic valve 402 and a fourth oil inlet 404, and the fourth execution mechanism is communicated with a total oil return path 104.
According to the scheme, the control method of the multifunctional large-flow hydraulic system comprises the following steps:
the motor 103 drives the pump set 102 to output the hydraulic oil in the oil tank 101;
hydraulic oil sequentially flows into the first execution mechanism 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 to drive the first execution mechanism to act, and the hydraulic oil flowing out of the first execution mechanism sequentially flows into the oil tank 101 through the oil return path 310, the three-position four-way electromagnetic directional valve 308 and the main oil return path 104;
the hydraulic oil flows into the second execution mechanism after sequentially passing through the second electromagnetic ball valve 302, the second speed regulating valve 307 and the second oil inlet path 311, the second execution mechanism is driven to act, and the hydraulic oil flowing out of the second execution mechanism flows into the oil tank 101 through the main 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 reducing valve 305 and the third oil inlet path 312, the third actuating mechanism is driven to act, and the hydraulic oil flowing out of the third actuating mechanism flows into the oil tank 101 through the main oil return path 104;
hydraulic oil flows into the energy accumulator component 403 through the fourth electromagnetic ball valve 401 to charge the energy accumulator component 403, and when the pressure of the energy accumulator component 403 reaches the required specified requirement, the fourth electromagnetic ball valve 401 stops charging the energy accumulator component 403; when a pressure releasing flow of the control energy accumulator assembly 403 is received, at this time, the large-diameter plug-in type two-position two-way electromagnetic valve 402 is powered on and then opened, the energy accumulator assembly 403 releases hydraulic oil, large-flow hydraulic oil flows into the fourth execution mechanism after sequentially passing through the large-diameter plug-in type two-position two-way electromagnetic valve 402 and the fourth oil inlet 404, the fourth execution mechanism is driven to act, and hydraulic oil flowing out of the fourth execution mechanism flows into the oil tank 101 through the main oil return path 104.
Example 2:
the basic contents are the same as 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 mounted on a pipeline between the second pressure reducing valve 305 and the third oil inlet passage 312; a third pressure gauge 405 and a third pressure sensor 406 are mounted to the accumulator assembly 403.
Example 3:
the basic contents are the same as example 1, except that:
the accumulator assembly 403 communicates with the oil return of the oil tank 101 via an accumulator oil return 407.
Example 4:
the basic contents are the same as 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 sequentially passing through the stop valve 105 and the flexible connector 106; 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 path 104 sequentially through the oil return filter 107 and the air cooler 108.
Example 5:
the basic contents are the same as example 1, except that:
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 unit 102 is communicated with the main oil return path 104 after passing through the electromagnetic overflow valve 201; the pressure control unit 2 further comprises a fine filter 202, and an oil outlet of the pump unit 102 sequentially passes through the fine filter 202 and 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; and a fourth pressure gauge 203 and a fourth pressure sensor 204 are arranged on pipelines 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 (10)
1. A multifunctional high-flow hydraulic system is characterized by comprising an oil tank pump unit (1), a conventional valve set integration unit (3) and a high-flow valve set integration unit (4);
the oil tank pump set unit (1) comprises an oil tank (101) and a pump set (102), the pump set (102) is connected with a motor (103), an oil inlet of the pump set (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 main oil return path (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 reducing valve (304), a second 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 through the first electromagnetic ball valve (301), the first 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) in sequence, the first executing mechanism is communicated with a main oil return channel (104) through an oil return channel (310) and the three-position four-way electromagnetic reversing valve (308) in sequence, and an oil outlet of the pump group (102) is communicated with a second executing mechanism through the second electromagnetic ball valve (302), the second speed regulating valve (307) and a second oil inlet channel (311) in sequence, the second execution mechanism is communicated with the main oil return path (104), an oil outlet of the pump group (102) is communicated with the third execution mechanism after sequentially passing through a third electromagnetic ball valve (303), a second reducing valve (305) and a third oil inlet path (312), and the third execution mechanism is communicated with the main oil return path (104);
the high-flow valve group integrated unit (4) comprises a fourth electromagnetic ball valve (401), a large-path cartridge type 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 sequentially passing through the fourth electromagnetic ball valve (401), the energy accumulator assembly (403) is communicated with a fourth execution mechanism after sequentially passing through the large-path cartridge type two-position two-way electromagnetic valve (402) and a fourth oil inlet path (404), and the fourth execution mechanism is communicated with a general oil return path (104).
2. A multi-functional high flow hydraulic system according to claim 1, characterized in 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); and a second pressure gauge (315) and a second pressure sensor (316) are arranged on a pipeline between the second reducing valve (305) and the third oil inlet channel (312).
3. A multi-functional high flow hydraulic system according to claim 1, characterized in that: and a third pressure gauge (405) and a third pressure sensor (406) are arranged on the energy accumulator component (403).
4. A multi-functional high flow hydraulic system according to claim 1, characterized in that: 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).
5. A multi-functional high flow hydraulic system according to claim 1, characterized in 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 sequentially passing through the stop valve (105) and the flexible connector (106).
6. A multi-functional high flow hydraulic system according to claim 1, characterized in that: 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 a total oil return path (104) sequentially through the oil return filter (107) and the air cooler (108).
7. A multi-functional high flow hydraulic system according to claim 1, characterized in that: 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 main oil return path (104) through the electromagnetic overflow valve (201).
8. A multi-functional high flow hydraulic system according to claim 7, characterized in that: the pressure control unit (2) further comprises a fine filter (202), and an oil outlet of the pump unit (102) is communicated with 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) after sequentially passing through the fine filter (202).
9. A multi-functional high flow hydraulic system according to claim 8, characterized in that: and a fourth pressure gauge (203) and a fourth pressure sensor (204) are arranged on pipelines 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).
10. A control method of the multifunctional high flow hydraulic system according to claim 1, characterized in that: the control method comprises the following steps:
the motor (103) drives the pump set (102) to output the hydraulic oil in the oil tank (101);
hydraulic oil sequentially flows into a first execution mechanism after passing through a first electromagnetic ball valve (301), a first pressure reducing valve (304), a first speed regulating valve (306), a three-position four-way electromagnetic directional valve (308) and a first oil inlet path (309) to drive the first execution mechanism to act, and the hydraulic oil flowing out of the first execution mechanism sequentially flows into an oil tank (101) after passing through an oil return path (310), the three-position four-way electromagnetic directional valve (308) and a total oil return path (104);
hydraulic oil sequentially flows into a second execution mechanism through a second electromagnetic ball valve (302), a second speed regulating valve (307) and a second oil inlet path (311) to drive the second execution mechanism to act, and the hydraulic oil flowing out of the second execution mechanism flows into an oil tank (101) through a main oil return path (104);
hydraulic oil sequentially flows into a third execution mechanism after passing through a third electromagnetic ball valve (303), a second reducing valve (305) and a third oil inlet channel (312) to drive the third execution mechanism to act, and the hydraulic oil flowing out of the third execution mechanism flows into an oil tank (101) through a main oil return channel (104);
hydraulic oil flows into the energy storage assembly (403) through the fourth electromagnetic ball valve (401) to charge the energy storage assembly (403), and when the pressure of the energy storage assembly (403) meets the required specified requirement, the fourth electromagnetic ball valve (401) stops charging the energy storage assembly (403); when a pressure releasing flow of the control energy accumulator assembly (403) is received, at the moment, the large-path plug-in type two-position two-way electromagnetic valve (402) is powered on and then opened, the energy accumulator assembly (403) releases hydraulic oil, large-flow hydraulic oil sequentially flows into the fourth execution mechanism after passing through the large-path plug-in type two-position two-way electromagnetic valve (402) and the fourth oil inlet path (404) to drive the fourth execution mechanism to act, and hydraulic oil flowing out of the fourth execution mechanism flows into the oil tank (101) through the total oil return path (104).
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| CN114033775B (en) | 2023-06-23 |
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