WO2022222574A1 - 采用液控单向阀配流的径向柱塞液压装置及工作方法 - Google Patents
采用液控单向阀配流的径向柱塞液压装置及工作方法 Download PDFInfo
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- WO2022222574A1 WO2022222574A1 PCT/CN2022/075493 CN2022075493W WO2022222574A1 WO 2022222574 A1 WO2022222574 A1 WO 2022222574A1 CN 2022075493 W CN2022075493 W CN 2022075493W WO 2022222574 A1 WO2022222574 A1 WO 2022222574A1
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- pressure
- valve body
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- cavity
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000000712 assembly Effects 0.000 claims abstract description 46
- 238000000429 assembly Methods 0.000 claims abstract description 46
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000002828 fuel tank Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/053—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
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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
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/0403—Details, component parts specially adapted of such engines
- F03C1/0435—Particularities relating to the distribution members
- F03C1/0438—Particularities relating to the distribution members to cylindrical distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/0447—Controlling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0452—Distribution members, e.g. valves
- F04B1/0456—Cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/06—Control
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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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the invention relates to a radial plunger hydraulic device and a working method adopting a hydraulic control check valve for flow distribution.
- Radial piston hydraulic pump is a type of hydraulic power unit used to provide oil with a certain pressure to the hydraulic system.
- Radial piston hydraulic motor is a kind of commonly used hydraulic actuator, which is used to drive the working mechanism to rotate at a certain speed.
- the output power of a hydraulic pump or hydraulic motor depends on its working pressure and flow. The higher the working pressure, the greater the output power and the greater the load it can drive.
- the flow distribution methods adopted by the existing radial plunger hydraulic device mainly include three types: axial flow distribution, end face flow distribution and one-way valve flow distribution.
- the devices using shaft distribution and end distribution can work in pump state and motor state respectively, that is, when torque is input from the transmission shaft, the device can work in the pump state and pump out high-pressure fluid; When the fluid is flowing, the device can work in the motor state, and the torque is output from the transmission shaft; however, because there is a gap in the above two distribution structures, and with the wear of the moving pair, the gap will gradually increase. Raise is limited.
- the one-way valve distribution has good sealing performance and can be used in radial piston hydraulic pumps to achieve high pressure and ultra-high pressure, but because ordinary one-way valves only allow one-way flow, they cannot be used for radial piston hydraulic motors. Distribution, this type of radial piston hydraulic device can only work in the pump state.
- the present invention provides a radial plunger hydraulic device and a working method using a hydraulic control check valve for flow distribution, which overcomes the deficiencies of the prior art.
- One of the technical solutions adopted by the present invention to solve its technical problems is:
- a radial plunger hydraulic device with hydraulic control check valve distribution which includes a casing, a plurality of plunger assemblies, a main shaft, a first hydraulic control check valve with the same number as the plunger assemblies and one-to-one correspondence, and A second hydraulic control check valve and a flow distribution plate with the same number of plunger assemblies and one-to-one correspondence;
- the casing is provided with a plurality of plunger cavities and a distribution cavity, and the distribution cavity is provided with a high-pressure general port and a low-pressure general port;
- Each plunger assembly can slide up and down in the corresponding plunger cavity
- the main shaft is rotatably connected to the housing and drives and connects all the plunger assemblies
- the distribution plate is rotatably mounted in the distribution cavity and is fixedly connected to the main shaft, and is provided with a high-pressure distribution groove that is always communicated with the high-pressure main port and a low-pressure distribution groove that is always communicated with the low-pressure main port;
- Each first hydraulically controlled check valve includes a first check valve body and a first check valve core, and the first check valve body is provided with a first movable cavity, a first valve body oil control cavity, and a first valve body.
- a high-pressure cavity of the first valve body and a low-pressure cavity of the first valve body, the first one-way valve core is movably mounted in the first one-way valve body and can control the communication between the high-pressure cavity of the first valve body and the low-pressure cavity of the first valve body
- the first valve body low pressure cavity is connected with the corresponding plunger cavity
- the first valve body high pressure cavity is connected with the high pressure general port
- the first valve body oil control cavity is alternately connected with the high pressure distribution groove and the low pressure distribution groove;
- Each second hydraulic control check valve has the same structure as the first hydraulic control check valve and includes a second check valve body and a second check valve core, and the second check valve body is provided with a second movable valve body. cavity, the second valve body oil control cavity, the first valve body high pressure cavity and the first valve body low pressure cavity, the second one-way valve core is movably mounted in the second one-way valve body and can control the second valve body high pressure
- the connection between the cavity and the low pressure cavity of the second valve body, the high pressure cavity of the second valve body is communicated with the corresponding plunger cavity, the low pressure cavity of the second valve body is communicated with the low pressure general port, the oil control cavity of the second valve body is communicated with the high pressure
- the distribution groove and the low pressure distribution groove are alternately connected.
- the high-pressure distribution grooves are provided with two, and they are all arc-shaped, the two high-pressure distribution grooves are the first high-pressure distribution groove and the second high-pressure distribution groove, and the low-pressure distribution groove
- the two low-pressure distribution grooves are respectively the first low-pressure distribution groove and the second low-pressure distribution groove, wherein the first high-pressure distribution groove and the first low-pressure distribution groove are located on the same circumference and symmetrically arranged, and the first low-pressure distribution groove is arranged symmetrically.
- the two high-pressure distribution grooves and the second low-pressure distribution grooves are located on the same circumference and are symmetrically arranged; the bottom wall of the distribution cavity is provided with a first control port that communicates with the oil control cavity of the first valve body, and the first control port is connected to the first high pressure
- the circumference where the distribution groove is located corresponds to; the bottom wall of the distribution chamber is provided with a second control port communicated with the oil control chamber of the second valve body, and the second control port corresponds to the circumference where the second high pressure distribution groove is located.
- the front of the distribution plate is provided with several high-pressure distribution holes that are always connected with the high-pressure main port
- the side of the distribution plate is provided with several low-pressure distribution holes that are always connected to the low-pressure main port
- the two high pressure distribution grooves and the two low pressure distribution grooves are located on the back of the distribution plate, and the two high pressure distribution grooves are always connected with the high pressure distribution holes, and the two low pressure distribution grooves are always connected with the low pressure distribution holes.
- the first one-way valve core includes a first valve core column and a first valve core block and a second valve core block respectively fixed at both ends of the first valve core column, the first valve core block
- the valve core column is movably sleeved in the first movable cavity and can drive the first valve core block and the second valve core block to move synchronously, the first valve core block is located in the oil control cavity of the first valve body, and the first valve core block moves the A valve body oil control chamber is divided into two independent first valve body oil control chambers, the second valve core block is located in the first valve body high pressure chamber and can open the first valve body high pressure chamber and close the first valve body high pressure There is a first valve core elastic member, the first valve core elastic member is sandwiched between the first valve core block and the first valve body oil control cavity cavity wall; the second one-way valve core It includes a second valve core column, a third valve core block and a fourth valve core block respectively fixed on both ends of the second valve core column, the second valve core column is
- the third valve core block moves synchronously with the fourth valve core block, the third valve core block is located in the second valve body oil control cavity, and the third valve core block separates the second valve body oil control cavity into two independent second valve body oil control chambers
- the fourth valve core block is located in the high pressure chamber of the second valve body and can move between opening the high pressure chamber of the second valve body and closing the high pressure chamber of the second valve body, and a second valve core elastic member is additionally provided, the The second valve core elastic member is sandwiched between the third valve core block and the wall of the oil control cavity of the second valve body.
- the first valve core block is provided with a first pressure-receiving surface facing one of the first valve body oil control sub-chambers
- the second valve core block is provided with a second pressure-receiving surface
- the second pressure-receiving surface is provided on the second valve core block.
- the area of a pressure-receiving surface is larger than the area of the second pressure-receiving surface;
- the third valve core block is provided with a third pressure receiving surface facing one of the second valve body oil control sub-chambers, and the fourth valve core block is provided with a fourth pressure surface
- the pressure-receiving surface, the area of the third pressure-receiving surface is larger than the area of the fourth pressure-receiving surface;
- the first one-way valve body is also provided with a first pressure relief hole, and the first pressure relief hole communicates with another first valve body to control oil
- the second one-way valve body is also provided with a second pressure relief hole, and the second pressure relief hole communicates with another second valve body oil control sub-cavity and the first valve body low pressure cavity.
- the working method of the radial plunger hydraulic device using the hydraulic control check valve for flow distribution which applies the radial plunger hydraulic device using the hydraulic control check valve for flow distribution, including:
- the high-pressure main port is connected to the pressure oil source, the high-pressure main port is the oil inlet, and the low-pressure main port is the oil outlet:
- the corresponding first valve body oil control chamber is connected to the high pressure distribution groove
- the corresponding second valve body oil control chamber is connected to the low pressure distribution groove
- the first one-way spool is connected.
- the high pressure chamber of the first valve body is controlled to be connected with the low pressure chamber of the first valve body
- the second one-way valve core controls the high pressure chamber of the second valve body to be disconnected from the low pressure chamber of the second valve body, and the high pressure oil flows through the high pressure general port
- the high pressure chamber of the first valve body and the low pressure chamber of the first valve body enter the corresponding plunger cavity, push the plunger to move downward, the volume of the plunger cavity increases, and drive the main shaft to make a positive circular motion until the plunger assembly reaches bottom position;
- both the main shaft and the valve plate rotate 180 degrees in the forward direction, the corresponding first valve body oil control chamber is connected with the low pressure distribution groove, and the corresponding second valve body oil control chamber is connected with the high pressure distribution groove connected, the first one-way valve core controls the high pressure chamber of the first valve body to be disconnected from the low pressure chamber of the first valve body, and the second one-way valve core controls the high pressure chamber of the second valve body to lead to the low pressure chamber of the second valve body
- the plunger assembly moves upward, the volume of the plunger cavity is reduced, and the oil in the plunger cavity passes through the high pressure cavity of the second valve body and the second valve body.
- the low-pressure chamber flows out from the low-pressure main port to realize the periodic motion of a single plunger assembly; the reciprocating motion of several plunger assemblies makes the main shaft continue to rotate in a positive direction, realizing the conversion of hydraulic energy into mechanical energy;
- the high-pressure general port is connected to the high-pressure fuel tank or hydraulic load, the high-pressure general port is the oil outlet, the low-pressure general port is connected to the low-pressure oil tank, and the low-pressure general port is the oil inlet:
- the reverse rotation of the main shaft drives at least one plunger assembly to move downward from the top position, the corresponding plunger cavity volume increases, and a vacuum is generated.
- the low-pressure distribution groove or the high-pressure distribution groove is connected, and the second one-way valve core controls the communication between the high-pressure chamber of the second valve body and the low-pressure chamber of the second valve body;
- the first check valve core controls the high pressure chamber of the first valve body to be disconnected from the low pressure chamber of the first valve body, and the oil in the low pressure tank flows through the low pressure general port, the low pressure chamber of the second valve body, and the second valve body.
- the high-pressure cavity enters the plunger cavity until the plunger assembly moves to the bottom position, at which time the main shaft drives the valve plate to reversely rotate 180 degrees;
- the main shaft continues to rotate 180 degrees in the opposite direction, the plunger assembly begins to move upward, the corresponding plunger cavity volume decreases, and the pressure increases, and its pressure is higher than the pressure at the high-pressure oil tank or the hydraulic load.
- the first valve body controls the oil
- the cavity is connected to the low pressure distribution groove or the high pressure distribution groove, and the first one-way valve core controls the first valve body high pressure cavity to communicate with the first valve body low pressure cavity; whether the second valve body oil control cavity is connected to the low pressure distribution groove or the high pressure distribution
- the grooves are connected, and the second one-way valve core controls the disconnection between the high pressure chamber of the second valve body and the low pressure chamber of the second valve body, and the oil in the plunger chamber flows through the low pressure chamber of the first valve body and the low pressure chamber of the first valve body.
- each plunger chamber After the high-pressure chamber enters the high-pressure oil tank or the hydraulic load, the oil discharge movement of the plunger assembly is realized; driven by the reverse rotation of the main shaft, each plunger chamber inhales the low-pressure oil, and forms the pressure oil to discharge, Realize the conversion of mechanical energy into hydraulic energy.
- a radial plunger hydraulic device with hydraulic control check valve distribution which includes a casing, a plurality of plunger assemblies, a main shaft, a rotating shaft, and a first hydraulic control check valve with the same number as the plunger assemblies and one-to-one correspondence. valve and the second hydraulic control check valve;
- the casing is provided with several plunger cavities, a rotating shaft cavity, a high-pressure oil circuit and a low-pressure oil circuit;
- Each plunger assembly can slide up and down in the corresponding plunger cavity
- the main shaft is rotatably connected to the housing and drives and connects all the plunger assemblies
- the rotating shaft is rotatably mounted in the rotating shaft cavity and is fixedly connected to the main shaft, and its outer periphery is provided with a control oil groove, a pressure relief oil groove, a first distribution ring groove and a second distribution ring groove, and the control oil groove is always in communication with the high-pressure oil circuit,
- the pressure relief oil groove is always in communication with the low pressure oil circuit, the first distribution ring groove is divided into the first distribution upper half ring groove and the first distribution lower half ring groove, and the second distribution ring groove is divided into the second distribution upper half ring groove and the second distribution ring groove.
- the lower half ring groove of distribution, the control oil groove is always connected with the upper half ring groove of the first distribution and the lower half ring groove of the second distribution, and the pressure relief oil groove is always connected with the lower half ring groove of the first distribution and the upper half ring groove of the second distribution ;
- Each first hydraulic control check valve includes a first check valve body and a first check valve core, and the first check valve body is provided with a first valve body oil control chamber, a first valve body high pressure chamber and a first valve body.
- a valve body low pressure chamber, the first one-way valve core is movably mounted in the first one-way valve body and can control the on-off between the first valve body high pressure chamber and the first valve body low pressure chamber, the first valve body
- the low-pressure cavity of the body is communicated with the corresponding plunger cavity
- the high-pressure cavity of the first valve body is communicated with the high-pressure oil circuit
- the oil control cavity of the first valve body is alternately connected to the first distribution upper half ring groove and the first distribution lower half ring groove ;
- Each second hydraulically controlled check valve has the same structure as the first hydraulically controlled check valve and includes a second check valve body and a second check valve core, and the second check valve body is provided with a second valve The body control oil cavity, the second valve body high pressure cavity and the second valve body low pressure cavity, the second valve body high pressure cavity is communicated with the corresponding plunger cavity, the second valve body low pressure cavity is communicated with the low pressure oil circuit, the second valve body The oil control cavity is alternately connected with the second distribution upper half ring groove and the second distribution lower half ring groove.
- the rotating shaft is provided with two first connecting oil holes and two second connecting oil holes extending along its axial direction, and one of the first connecting oil holes connects the control oil groove with the first oil hole.
- the distribution upper half ring groove is connected, and the other first connection oil hole connects the control oil groove with the second distribution lower half ring groove; one of the second connection oil holes connects the pressure relief oil groove with the first distribution lower half ring groove After connecting, the other second connecting oil hole connects the pressure relief oil groove with the second distribution upper half ring groove.
- the casing includes a casing body and a manifold, the main shaft is rotatably attached to the casing body and protrudes from the front end face of the casing body, and the plunger cavity is arranged on the outer circumference of the casing body, so
- the confluence disc is fixedly connected to the rear end of the shell body, the rotating shaft cavity is arranged on the confluence disc and penetrates the confluence disc front and rear;
- the shell body is provided with a first high pressure oil passage section and a first low pressure oil passage section, and the confluence disc is provided with The second high-pressure oil passage communicated with the first high-pressure oil passage and the second low-pressure oil passage communicated with the first low-pressure oil passage, the first high-pressure oil passage and the second high-pressure oil passage form the high-pressure oil passage, the first A low-pressure oil passage and a second low-pressure oil passage form the low-pressure oil passage.
- the outer periphery of the confluence disc is provided with a confluence disc high pressure ring groove and a confluence disc low pressure ring groove
- the bottom wall of the confluence disc high pressure ring groove is provided with a liquid resistance installation hole which is always communicated with the control oil groove
- the bottom wall of the low-pressure ring groove of the manifold is provided with a low-pressure flow hole which is always connected with the pressure relief oil groove, the high-pressure ring groove of the manifold and the liquid resistance mounting hole form the second high-pressure oil passage, and the low-pressure
- the annular groove and the low-pressure flow hole form the second low-pressure oil passage
- the housing body is provided with a first oil-controlling hole that communicates with the oil-controlling cavity of the first valve body, and a first oil-controlling hole for connecting the high-pressure ring groove of the manifold with the first oil-controlling cavity.
- the confluence disc is provided with a second oil-control branch hole that communicates with the first oil-control branch hole, and the second oil-control branch hole corresponds to the first distribution ring groove; the shell body There is also a third oil control hole that communicates with the oil control cavity of the second valve body, and a first low pressure through hole for connecting the low pressure ring groove of the confluence disc with the low pressure cavity of the second valve body.
- the third oil control through hole is connected with the fourth oil control through hole, and the fourth oil control through hole corresponds to the second distribution ring groove.
- a radial plunger hydraulic device with hydraulic control check valve distribution which includes a casing, several plunger assemblies, a main shaft, a manifold, a manifold, and the same number of plunger assemblies and one-to-one correspondence with the first A hydraulic control check valve and a second hydraulic control check valve;
- the casing is provided with several plunger cavities, several first valve cavities, several second valve cavities, an assembly cavity, a high-pressure oil circuit and a low-pressure oil circuit;
- Each plunger assembly can slide up and down in the corresponding plunger cavity
- the main shaft is rotatably connected to the housing and drives and connects all the plunger assemblies
- the confluence disc is fixedly connected in the assembly cavity, and its outer periphery is provided with a first annular groove and a second annular groove respectively communicated with the high-pressure oil circuit and the low-pressure oil circuit, and the end face is also provided with a distribution cavity;
- the distribution plate is rotatably mounted in the distribution cavity and is connected to the main shaft by transmission, and is provided with a high-pressure distribution groove that can be communicated with the high-pressure oil circuit and a low-pressure distribution groove that can be communicated with the low-pressure oil circuit;
- Each first hydraulically controlled check valve includes a first check valve body and a first check valve core, the first check valve body is installed in the first valve cavity and is provided with a first valve body oil control cavity , the first valve body high pressure chamber and the first valve body low pressure chamber, the first one-way valve core is movably mounted in the first one-way valve body and can control the first valve body high pressure chamber and the first valve body low pressure chamber
- the first valve body low pressure cavity is connected with the corresponding plunger cavity
- the first valve body high pressure cavity is connected with the first ring groove
- the first valve body oil control cavity is alternated with the high pressure distribution groove and the low pressure distribution groove connect;
- Each second hydraulically controlled check valve has the same structure as the first hydraulically controlled check valve and includes a second check valve body and a second check valve core, and the second check valve body is provided with a second valve
- the body control oil chamber is alternately connected with the high pressure distribution groove and the low pressure distribution groove.
- the bottom wall of the distribution chamber is provided with a plurality of first confluence holes arranged at annular intervals and communicated with the oil control chamber of the first valve body, and a plurality of first confluence holes arranged at an annular interval and connected with the oil control chamber of the second valve body Connected second confluence holes, the first confluence hole and the second confluence hole are arranged concentrically and the first confluence hole is located in the inner ring of the second confluence hole; the back of the distribution plate abuts against the bottom wall of the distribution cavity and the high pressure distribution groove Both the low-pressure distribution groove and the high-pressure distribution groove are located on the back of the distribution plate, and the first and second confluence holes can be alternately connected to the high-pressure distribution groove and the low-pressure distribution groove respectively.
- the high-pressure distribution grooves are provided with two, and both are arc-shaped, the two high-pressure distribution grooves are respectively a high-pressure inner distribution groove and a high-pressure outer distribution groove, and there are two low-pressure distribution grooves, And both are arc-shaped, the two low-pressure distribution grooves are the low-pressure inner distribution groove and the low-pressure outer distribution groove, wherein the high-pressure inner distribution groove and the low-pressure inner distribution groove are located on the same circumference and symmetrically arranged, and the high-pressure outer distribution groove and the low-pressure outer distribution groove are arranged symmetrically.
- the distribution grooves are located on the same circumference and are symmetrically arranged; the first confluence hole corresponds to the circumference where the high-pressure inner distribution groove is located; the second confluence hole corresponds to the circumference where the high-pressure outer distribution groove is located; the distribution plate
- the front side is provided with two high-pressure distribution holes which are respectively communicated with the two high-pressure distribution grooves, and the side of the distribution plate is provided with two low-pressure distribution holes respectively connected with the two low-pressure distribution grooves;
- the end face of the casing is also provided with A first control high-pressure port communicated with the two high-pressure distribution holes, and a second control low-pressure port communicated with the two low-pressure distribution holes is further provided on the outer peripheral surface of the manifold.
- the first and second confluence holes both extend to the outer peripheral surface of the confluence disc; the casing is further provided with a first control oil hole that communicates with the first valve body oil control cavity and a second control oil hole communicated with the oil control cavity of the second valve body, the first control oil hole is communicated with the first confluence hole, and the second control oil hole is communicated with the second confluence hole.
- These radial plunger hydraulic devices use hydraulically controlled check valve for flow distribution, which provides a new flow distribution method. Thanks to the excellent sealing performance of the hydraulically controlled check valve, the hydraulic motor can work under high pressure, and High volumetric efficiency can be achieved. These devices can be used not only as hydraulic motors, but also as hydraulic pumps, and can be used in hydraulic systems that need to achieve a power recovery function.
- FIG. 1 is a perspective exploded schematic view of the radial piston hydraulic motor of the first embodiment.
- FIG. 2 is an axial cross-sectional schematic diagram of the radial piston hydraulic motor according to the first embodiment.
- FIG. 3 is a schematic side view of A-A of FIG. 2 .
- FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 .
- FIG. 5 is a schematic cross-sectional view of the first hydraulically controlled check valve according to the first embodiment.
- FIG. 6 is a schematic exploded perspective view of the first hydraulically controlled check valve according to the first embodiment.
- FIG. 7 is a three-dimensional structural view of the distribution plate according to the first embodiment.
- FIG. 8 is a schematic front view of the distribution plate of the first embodiment.
- FIG. 9 is a schematic diagram showing the principle of the hydraulic motor of the first embodiment.
- FIG. 10 is a schematic diagram showing the principle of the hydraulic pump of the first embodiment.
- FIG. 11 is a schematic exploded perspective view of the radial piston hydraulic device according to the second embodiment.
- FIG. 12 shows a longitudinal cross-sectional view of the radial piston hydraulic device of the second embodiment.
- FIG. 13 shows one of the schematic cross-sectional views of the radial piston hydraulic device according to the second embodiment.
- FIG. 14 shows the second schematic cross-sectional view of the radial piston hydraulic device according to the second embodiment.
- FIG. 15 shows one of the schematic cross-sectional views of the housing body.
- FIG. 16 shows the second schematic cross-sectional view of the case body.
- FIG. 17-1 shows one of the schematic cross-sectional views of the busbar according to the second embodiment.
- FIG. 17-2 shows the second schematic cross-sectional view of the busbar according to the second embodiment.
- FIG. 17-3 shows the third schematic cross-sectional view of the busbar according to the second embodiment.
- FIG. 18 is a schematic side view of the rotating shaft of the second embodiment.
- FIG. 19 is a schematic cross-sectional view of the rotating shaft of the second embodiment.
- FIG. 20-1 is a schematic cross-sectional view taken along line C-C of FIG. 19 .
- FIG. 20-2 is a schematic cross-sectional view of D-D of FIG. 19 .
- FIG. 20-3 shows a schematic cross-sectional view along the line E-E of FIG. 19 .
- FIG. 20-4 is a schematic cross-sectional view of F-F of FIG. 19 .
- FIG. 21-1 is a schematic cross-sectional view of the first hydraulic control check valve of the second embodiment.
- FIG. 21-2 is a schematic side view of the first hydraulic control check valve of the second embodiment.
- FIG. 22 is a schematic exploded perspective view of the radial plunger hydraulic device of the third embodiment.
- FIG. 23 shows one of the cross-sectional views of the radial plunger hydraulic device of the third embodiment.
- FIG. 24 shows the second cross-sectional view of the radial piston hydraulic device of the third embodiment.
- FIG. 25-1 is a schematic cross-sectional view of the busbar according to the third embodiment.
- FIG. 25-2 is a schematic top view of the busbar of the third embodiment.
- 25-3 is a schematic side view of the busbar of the third embodiment.
- FIG. 25-4 is a schematic cross-sectional view along G-G of FIG. 25-2 .
- Fig. 25-5 is a schematic cross-sectional view of Fig. 25-2 along H-H.
- FIG. 26-1 shows a schematic bottom view of the distribution plate of the third embodiment.
- FIG. 26-2 shows a schematic cross-sectional view of the distribution plate of the third embodiment.
- FIG. 26-3 is a schematic top view of the distribution plate of the third embodiment.
- connection and “fixed connection” should be understood in a broad sense, that is, there is no displacement relationship and relative rotation relationship between the two.
- Any connection means that is to say including non-removable fixed connection, detachable fixed connection, integrated and fixed connection by other means or elements.
- FIG. 1 and FIG. 10 are specific embodiments of the radial piston hydraulic device using hydraulic control check valve for flow distribution.
- the radial plunger hydraulic device using hydraulic control check valve distribution includes a housing 200, a plurality of plunger assemblies, a main shaft 300, and a first hydraulic control unit with the same number of plunger assemblies and one-to-one correspondence.
- the casing 200 is provided with a plurality of plunger chambers 210 and a distribution chamber 220 , and the distribution chamber 220 is provided with a high-pressure general port 221 and a low-pressure general port 222 .
- the casing 200 includes a shaft end cover 230 , a casing body 240 and a distribution end cover 250 that are connected in sequence and arranged coaxially, and the casing body 240 is provided with the plunger.
- Cavity 210, the distribution cavity 220 is enclosed between the distribution end cover 250 and the rear end face of the casing body 240; on the outer peripheral surface of the distribution end cover 250 .
- the housing body 240 includes a housing body seat 241 and a plunger pressing cover 242 , and the plunger cavity 210 is enclosed between the plunger pressing cover 242 and the side surface of the housing body seat 241 .
- each plunger cavity 210 is correspondingly provided with a first hydraulic check valve and a second hydraulic check valve.
- the number of plunger cavities 210 is not limited to this, and may also be 8 or 10.
- the plunger assembly can slide up and down in the plunger cavity 210 .
- the plunger assembly includes a plunger 500 and a connecting rod shoe 510 , the plunger 500 is slidably connected in the plunger cavity 210 up and down, and the top of the connecting rod shoe 510 is sleeved on the plunger 500
- the eccentric wheel 520 is sleeved outside the main shaft 300, the bottom end of the connecting rod shoe 510 abuts on the eccentric wheel 520, the plunger return ring
- the 530 is sleeved on the bottom end of the connecting rod slipper 510, and the plunger 500 slides up and down in the plunger cavity 210 to drive the eccentric wheel 520 and the main shaft 300 to rotate through the connecting rod slipper 510 and the return ring 530, which is the work of the hydraulic motor.
- the rotation of the main shaft 300 can drive the plunger 500 to slide up and down in the plunger cavity 210 through the connecting rod shoe 510 and the return ring 530, which is the work of the hydraulic motor.
- the rotation of the main shaft 300 can drive the plunge
- the main shaft 300 is rotatably attached to the housing and is drivingly connected to the plunger assembly.
- the left and right sides of the eccentric wheel 520 are respectively provided with a first bearing 540 and a second bearing 550 to stably support the main shaft 300 .
- the end of the main shaft 300 is provided with a first transmission key hole 310 .
- the distribution plate 400 is rotatably mounted in the distribution cavity 220 and is connected to the main shaft 300 in a driving manner.
- a transmission short shaft 320 is further included.
- the back of the distribution plate 400 is provided with a second transmission key hole 410 , and both ends of the transmission short shaft 320 are respectively connected with the first transmission key hole 310 .
- the second transmission key hole 410 is inserted and matched; there is also a locking screw 330 , the locking screw 330 is screwed with the transmission short shaft 320 after passing through the distribution plate 400 .
- the distribution plate 400 and the main shaft 300 can be rotated synchronously.
- the two high-pressure distribution grooves are the first high-pressure distribution groove 430 and the second high-pressure distribution groove, respectively.
- Slot 440 there are two low-pressure distribution grooves, both of which are arc-shaped and located on the back of the distribution plate 400.
- the two low-pressure distribution grooves are the first low-pressure distribution groove 450 and the second low-pressure distribution groove 460.
- the first high-pressure distribution groove The grooves 430 and the first low pressure distribution grooves 450 are located on the same large circumference and symmetrically arranged, and the second high pressure distribution grooves 440 and the second low pressure distribution grooves 460 are located on the same small circumference and symmetrically arranged.
- the front of the distribution plate 400 is provided with four high-pressure distribution holes 401 which are always connected with the high-pressure main port 221 , wherein two high-pressure distribution holes 401 are located on the small circumference and are connected with the second high-pressure distribution hole 401 .
- the high-pressure distribution groove 440 is communicated with each other, and the other two high-pressure distribution holes 401 are located on the large circumference and communicate with the first high-pressure distribution groove 430 .
- the front surface of the distribution plate 400 is further provided with a high-pressure guide groove 402 , and the high-pressure guide groove 402 communicates with the four high-pressure distribution holes 401 and communicates with the high-pressure main port 221 correspondingly.
- the high pressure oil in it enters the high pressure diversion groove 402 through the high pressure main port 221 , and then enters the first high pressure distribution groove 430 and the second high pressure distribution groove through the high pressure distribution hole 401 within 440.
- the side of the distribution plate 400 is provided with four low-pressure distribution holes 403 that are always communicated with the low-pressure main port 222.
- Two of the low-pressure distribution holes 403 are connected to the first low-pressure distribution groove 450, and the other two low-pressure distribution holes 403 are connected to the first low-pressure distribution groove 403.
- the two low-pressure distribution grooves 460 are communicated with each other.
- the low pressure oil in the first low pressure distribution groove 450 and the second low pressure distribution groove 460 enters the gap 404 between the distribution plate 400 and the distribution cavity 220 through the respective low pressure distribution holes 403, It flows from the gap 404 to the low pressure main port 222 and then enters the low pressure fuel tank 12 .
- the hydraulic motor further includes a wear-resistant plate 480, the wear-resistant plate 480 is sandwiched between the distribution plate 400 and the bottom wall of the distribution chamber 220, and the transmission short shaft 320 passes through the wear-resistant plate 480.
- the grinding disc 480 is then inserted into the second transmission key hole 410 .
- a support sleeve 490 is also provided on the outer circumference of the transmission stub shaft 320 , and the outer circumference of the support sleeve 490 is located at the connection between the shell body 240 and the wear-resistant disc 480 .
- the number of the first hydraulic control one-way valves I, II, III, IV and V is five, and they are all laterally arranged in the housing body 240 .
- each of the first hydraulic control check valves I, II, III, IV, V includes a first check valve body and a first check valve core, the first check valve body A first movable chamber 110, a first valve body oil control chamber 120, a first valve body high pressure chamber 130 and a first valve body low pressure chamber 140 are provided, and the first one-way valve core is movably mounted in the first one-way valve body And it can control the connection between the first valve body high pressure chamber 130 and the first valve body low pressure chamber 140, the first valve body low pressure chamber 140 is communicated with the corresponding plunger chamber 210, the first valve body high pressure chamber 130 and The high-pressure main port 221 is connected to each other, and the first valve body oil control chamber 120 is alternately connected to the high-pressure distribution groove and the low-pressure distribution groove.
- the central axis of the casing 200 is K1K2 , wherein the end close to K1 is the rear end of the casing 200 , and the end close to K2 is the front end of the casing 200 .
- the end close to K1 is the rear end of the casing 200
- the end close to K2 is the front end of the casing 200 .
- five annularly arranged high-pressure ports 243 and five annularly arranged low-pressure ports 244 located on the same circumference of the high-pressure ports 243 are provided at the K1 end face of the casing body 240 .
- the five high-pressure ports 243 are directly connected to the high-pressure total
- the ports 221 communicate with each other, and the five low-pressure ports 244 communicate with the gap 404 between the distribution plate 400 and the distribution cavity 220 .
- the K1 end face of the housing body is also provided with five annularly spaced first control ports 223 and five annularly spaced apart second control ports 224 located outside the first control ports 223 , and the first control ports 223 are connected to the distribution plate 400 .
- the first high-pressure distribution groove 430 and the first low-pressure distribution groove 450 are located in the large circle corresponding to the second control port 224 and the small circle where the second high-pressure distribution groove 440 and the second low-pressure distribution groove 460 of the distribution plate 400 are located.
- the first valve body oil control chamber 120 communicates with the first control port 223 through the first oil control pipe 610 .
- the high pressure chamber 130 of the first valve body communicates with the corresponding high pressure port 243
- the low pressure chamber 140 of the first valve body and the plunger chamber 210 are connected through the first low pressure pipe 620 .
- the first one-way valve body includes a first valve body 111 and a second valve body 112 , and the first valve body oil control cavity is enclosed between the first valve body 111 and the second valve body 112 .
- the center of the left end face of the second valve body 112 is provided with the first movable chamber 110
- the center of the right end face of the second valve body 112 is provided with the first valve body high pressure chamber 130
- the first valve body The low pressure chamber 140 transversely penetrates the second valve body 112
- the first movable chamber 110 , the first valve body high pressure chamber 130 and the first valve body low pressure chamber 140 communicate with each other.
- the inner wall of the high-pressure chamber 130 of the first valve body is provided with a first guide slope 131 .
- the outer peripheral surface of the first valve body 111 is provided with a first annular groove 113
- the bottom wall of the first annular groove 113 is provided with a plurality of first through holes 114
- the first through holes 114 communicate with the first valve body oil control cavity 120
- the outer periphery of the second valve body 112 is provided with a second annular groove 115
- the bottom wall of the second annular groove 115 is provided with a number of second through holes 116, which communicate with the low-pressure cavity 140 of the first valve body .
- the first one-way valve core includes a first valve core column 150 and a first valve core block 160 and a second valve core block 170 respectively fixed on both ends of the first valve core column 150.
- the first valve core column 150 The movable sleeve is connected in the first movable cavity 110 and can drive the first valve core block 160 and the second valve core block 170 to move synchronously.
- the first valve core block 160 is located in the first valve body oil control cavity 120 and the first valve core block 160 divides the first valve body oil control chamber 120 into two independent first valve body oil control chambers 121 , and the second valve core block 170 is located in the first valve body high pressure chamber 130 and can open the first valve body high pressure chamber 130 and closing the high pressure chamber 130 of the first valve body, and a first valve core elastic member 180 is additionally provided.
- the first valve core elastic member 180 is sandwiched between the first valve core block 160 and the first valve body oil control chamber 120 between the cavity walls.
- the first valve core block 160 is provided with a conical first pressure receiving surface 161 facing one of the first valve body oil control sub-chambers 121
- the second valve core block 170 is provided with a flat second pressure receiving surface 161 .
- the area of the first pressing surface 161 is larger than the area of the second pressing surface 171 .
- the first one-way valve body is further provided with a first pressure relief hole 190 , and the first pressure relief hole 190 communicates with the other first valve body oil control sub-chamber 121 and the first valve body low pressure chamber 140 .
- the first pressure relief hole 190 can avoid the situation that the first one-way spool cannot move due to dead space in the first valve body oil control chamber 121 located on the right side.
- the second valve core block 170 is further provided with a second guide slope 172 that can cooperate with the first guide slope 131.
- the valve body high pressure chamber 130 is in the In the closed state, on the contrary, when the second guide slope 172 leaves the first guide slope 131, the valve body high pressure chamber 130 is in an open state.
- the first valve core block 160 When the radial plunger hydraulic device is in the state of the hydraulic motor, if the first valve body oil control chamber 120 inputs high pressure oil, and the high pressure oil is the same as the oil pressure in the first valve body high pressure chamber, the first valve core block 160 The pressure received is greater than the pressure received by the second valve core block 170, so that the first one-way valve core moves toward the direction of the second valve core block 170, so that the second valve core block 170 opens the valve body high pressure chamber 130, and the valve body high pressure The cavity 130 is communicated with the low pressure cavity 140 of the valve body; if the first valve body oil control cavity 120 inputs low pressure oil, the pressure on the first valve core block 160 is less than the pressure on the second valve core block 170, so that the first one-way valve The core moves toward the direction of the first valve core block 160 so that the second valve core block 170 closes the valve body high pressure chamber 130 , and the valve body high pressure chamber 130 is disconnected from the valve body low pressure chamber 140 .
- the number of the second hydraulic control check valves VI, VII, VIII, IX, and X is set to five, and the second hydraulic control check valve has the same structure as the first hydraulic control check valve.
- Each of the second hydraulic control check valves VI, VII, VIII, IX, and X includes a second check valve body and a second check valve core.
- Two valve body oil control chamber, first valve body high pressure chamber and first valve body low pressure chamber, the second one-way valve core is movably mounted in the second one-way valve body and can control the second valve body high pressure chamber and the first valve body low pressure chamber.
- the high pressure chamber of the second valve body is communicated with the corresponding plunger chamber 210
- the low pressure chamber of the second valve body is communicated with the low pressure general port 222
- the oil control chamber of the second valve body is connected with the high pressure flow distribution
- the tank and the low pressure distribution tank are alternately connected.
- the second one-way valve core includes a second valve core column, a third valve core block and a fourth valve core block respectively fixed on both ends of the second valve core column, and the second valve core column is movably sleeved on the first valve core column.
- the second movable cavity can drive the third valve core block and the fourth valve core block to move synchronously.
- the third valve core block is located in the second valve body oil control cavity and the third valve core block divides the second valve body oil control cavity into two an independent second valve body oil control sub-chamber
- the fourth valve core block is located in the high pressure chamber of the second valve body and can move between opening the high pressure chamber of the second valve body and closing the high pressure chamber of the second valve body.
- the second valve core elastic piece is sandwiched between the third valve core block and the cavity wall of the oil control cavity of the second valve body.
- the third valve core block is provided with a third pressure receiving surface facing one of the second valve body oil control chambers
- the fourth valve core block is provided with a fourth pressure receiving surface, and the area of the third pressure receiving surface is larger than that of the fourth pressure receiving surface. Pressure surface area.
- the second one-way valve body is further provided with a second pressure relief hole, and the second pressure relief hole communicates with another second valve body oil control sub-chamber and the first valve body low pressure chamber.
- the high pressure chamber of the second valve body communicates with the corresponding plunger chamber 210 through the second high pressure pipe 710
- the low pressure chamber of the second valve body communicates with the low pressure port 244 through the second low pressure pipe 720 .
- the second valve body oil control chamber communicates with the second control port 224 through the second oil control pipe 730 .
- the working method of the radial plunger hydraulic device with hydraulic control check valve distribution When the radial plunger hydraulic device is a hydraulic motor, the high pressure main port is connected to the pressure oil source 11, the high pressure main port is the oil inlet, and the low pressure main port is the oil inlet. The port is connected to the low pressure oil tank 12 and the low pressure general port 222 is the oil outlet.
- the plunger assemblies Take one of the plunger assemblies as an example:
- the corresponding first valve body oil control chamber 120 is connected to the high pressure distribution groove
- the corresponding second valve body oil control chamber is connected to the low pressure distribution groove
- the first one-way valve The core controls the high pressure chamber 130 of the first valve body to communicate with the low pressure chamber 140 of the first valve body
- the second one-way valve core controls the disconnection between the high pressure chamber of the second valve body and the low pressure chamber of the second valve body, and the high pressure oil flows through
- the high pressure general port 221, the first valve body high pressure chamber 130, and the first valve body low pressure chamber 140 then enter the corresponding plunger chamber 210, push the plunger 500 to move downward, the volume of the plunger chamber 210 increases, and drives the main shaft 300 to move. Circular motion in a positive direction until the plunger assembly reaches the lower bottom position. Since the second one-way valve is always in a closed state during this process, the oil in the plunger cavity 210 will not flow out through the second one-way valve.
- both the main shaft 300 and the valve plate 400 are rotated 180 degrees in the forward direction, the corresponding first valve body oil control chamber 120 is connected to the low pressure distribution groove, and the corresponding second valve body oil control chamber Connected with the high-pressure distribution groove, the first one-way valve core controls the first valve body high-pressure chamber 130 to disconnect from the first valve body low-pressure chamber 140, and the second one-way valve core controls the second valve body high-pressure chamber 102 and the first valve body.
- the low-pressure chambers of the two valve bodies are connected to each other.
- the plunger assembly moves upward, the volume of the plunger cavity 210 decreases, and the oil in the plunger cavity 210 passes through the first
- the high pressure chamber of the second valve body and the low pressure chamber of the second valve body flow out from the low pressure main port 222 to realize the periodic movement of a single plunger assembly; during this process, the first one-way valve is in a closed state, and the oil in the plunger cavity 210 does not flow. will flow out through the first one-way valve.
- the reciprocating motion of the several plunger assemblies makes the main shaft 300 continuously rotate in the positive direction, so as to realize the conversion of hydraulic energy into mechanical energy.
- the flow direction of the oil is: pressure oil source 11 ⁇ high pressure general port 221 ⁇ first valve body high pressure chamber 130 ⁇ first valve body low pressure chamber 140 ⁇ plunger chamber 210 ⁇ second valve body high pressure Cavity ⁇ low-pressure chamber of the second valve body ⁇ low-pressure general port 222 ⁇ low-pressure fuel tank 12.
- ABCDE represents the five first control ports 223, which control the on-off of the five first hydraulic control check valves I, II, III, IV, and V in turn;
- abcde represents the five second control ports 224, which control the five first control check valves in turn.
- the first control port A is in communication with the first valve body oil control chamber 120 of the first hydraulically controlled check valve I, and the second control port a is connected to the first valve body oil control chamber 120 of the second hydraulically controlled check valve X.
- the first hydraulic control check valve I and the second hydraulic control check valve X correspond to the same plunger cavity 210 .
- the first control port E is communicated with the first valve body oil control chamber of the first hydraulic control check valve V
- the second control port e is communicated with the first valve body oil control chamber of the second hydraulic control check valve VI. .
- the first control port B is located in the first high pressure distribution groove 430, and the second control port b is located in the second low pressure distribution groove 460, then the first liquid
- the high pressure chamber of the first valve body of the control check valve II is connected with the low pressure chamber of the first valve body, the first hydraulic control check valve II is opened, and the high pressure chamber of the second valve body of the second hydraulic control check valve VII is connected to the first valve body.
- the low-pressure chambers of the two valve bodies are disconnected, and the second hydraulic control check valve VII is closed.
- the high-pressure oil in the high-pressure oil tank 11 enters the high-pressure port 243 through the high-pressure main port 221, and then flows from the high-pressure port 243 through the first valve body.
- the high pressure cavity and the low pressure cavity of the first valve body enter the corresponding plunger cavity 210 , drive the plunger 500 and the connecting rod shoe 510 to move downward, and then drive the eccentric wheel 520 to rotate, and finally drive the main shaft 300 to rotate.
- the first control port E is located in the first low pressure distribution groove 450, and the second control port e is located in the second high pressure distribution groove 440, then the first hydraulic control one-way
- the high pressure chamber of the first valve body of the valve V is disconnected from the low pressure chamber of the first valve body, the first hydraulic control check valve V is closed, and the high pressure chamber of the second valve body of the second hydraulic control check valve VI is connected to the second valve body.
- the low-pressure chamber is connected, and the second hydraulic control check valve VI is opened.
- the plunger 500 in the plunger chamber 210 moves upward to push the high-pressure oil in the plunger chamber 210 to pass through the high-pressure chamber of the second valve body and the first valve.
- the low pressure chamber of the second valve body enters the low pressure port 244 , flows through the gap 404 between the distribution plate 400 and the distribution chamber 220 and finally flows out from the low pressure main port 222 into the low pressure fuel tank 12 .
- the distribution plate rotates 180 degrees on this basis, the first control port E is located in the first high-pressure distribution groove 430, and the second control port e is located in the second low-pressure distribution groove 460.
- the state of B and the second control port b realizes that the first hydraulic control check valve and the second hydraulic control check valve are alternately conducted to perform flow distribution action.
- the working method of the radial plunger hydraulic device with hydraulic control check valve distribution is a hydraulic pump, the high pressure main port 221 is connected to the high pressure oil tank or the hydraulic load 13 and the high pressure main port 221 is the oil outlet.
- the low pressure general port 222 is connected to the low pressure fuel tank 14 and the low pressure general port 222 is the oil inlet:
- the reverse rotation of the main shaft 300 drives at least one plunger assembly to move downward from the top position, the corresponding plunger cavity 210 increases in volume, and a vacuum is generated.
- the body control oil chamber is connected to the low pressure distribution groove or the high pressure distribution groove, and the second one-way valve core controls the communication between the second valve body high pressure chamber and the second valve body low pressure chamber; regardless of whether the first valve body oil control chamber 120 is connected with the low pressure distribution
- the first check valve core controls the high pressure chamber 130 of the first valve body to be disconnected from the low pressure chamber 140 of the first valve body, and the oil in the low pressure oil tank 14 flows through the low pressure main port 222, the second valve body
- the low-pressure cavity of the valve body and the high-pressure cavity of the second valve body enter the plunger cavity 210 until the plunger assembly moves to the bottom position, at which time the main shaft 300 drives the valve plate 400 to rotate 180 degrees in the opposite direction;
- the main shaft 300 continues to rotate 180 degrees in the opposite direction, the plunger assembly starts to move upward, the volume of the corresponding plunger cavity 210 decreases, and the pressure increases, and its pressure is higher than the pressure at the high-pressure oil tank or the hydraulic load 13.
- the valve body oil control chamber 120 is connected to the low pressure distribution groove or the high pressure distribution groove, and the first one-way valve core controls the first valve body high pressure chamber 130 to communicate with the first valve body low pressure chamber 140;
- the low-pressure distribution groove or the high-pressure distribution groove are connected, the second one-way valve core controls the high-pressure chamber of the second valve body to be disconnected from the low-pressure chamber of the second valve body, and the oil in the plunger chamber 210 flows through the first valve body
- the low pressure chamber 140 and the high pressure chamber 130 of the first valve body enter the high pressure oil tank or the hydraulic load 13 to realize the oil discharge movement of the plunger assembly;
- each plunger cavity 210 inhales low-pressure oil, and forms pressure oil for discharge, realizing the conversion of mechanical energy into hydraulic energy.
- the flow direction of the oil is opposite to that of the oil in the state of the hydraulic motor, as follows: the low pressure oil tank 14 ⁇ the low pressure general port 222 ⁇ the second valve body low pressure chamber ⁇ the second valve body high pressure chamber ⁇ the plunger Chamber 210 ⁇ first valve body low pressure chamber 140 ⁇ first valve body high pressure chamber 130 ⁇ high pressure general port 221 ⁇ hydraulic load 13.
- the working process of the hydraulic pump and the working process of the hydraulic motor are in the opposite state.
- the opening or closing of the first hydraulic control check valve and the second hydraulic control check valve is only determined by the pressure of the plunger cavity 210, and the first valve body oil control cavity and the second valve body oil control cavity are determined only by the pressure of the plunger cavity 210. It does not work.
- the first hydraulic control check valve and the second hydraulic control check valve have the same functions as ordinary check valves.
- the second embodiment of the radial plunger hydraulic device using hydraulic control check valve distribution includes a housing 1000, five plunger assemblies , a main shaft 2000, a rotating shaft 3000, five first hydraulic control check valves and five second hydraulic control check valves.
- the housing 1000 is provided with five plunger cavities 1100 , a shaft cavity 1200 , a high-pressure oil circuit and a low-pressure oil circuit.
- the housing 1000 includes a housing body 1300 and a manifold 1400 , the plunger cavity 1100 is disposed on the outer periphery of the housing body 1300 , and the manifold 1400 is fixed to the housing body 1300 The rear end of the shaft cavity 1200 is disposed on the manifold 1400 and runs through the manifold 1400 front and rear.
- the housing body 1300 is provided with a first high-pressure oil passage 1310 and a first low-pressure oil passage 1320
- the manifold 1400 is provided with a first high-pressure oil passage 1310 connected to it.
- the second high-pressure oil passage connected to the first low-pressure oil passage 1320 and the second low-pressure oil passage communicated with the first low-pressure oil passage 1320, the first high-pressure oil passage 1310 and the second high-pressure oil passage form the high-pressure oil passage, and the first low-pressure oil passage 1320
- the low-pressure oil passage is formed with the second low-pressure oil passage.
- the first high pressure oil passage section 1310 and the first low pressure oil passage section 1320 both extend to the side of the housing body 1300 .
- the outer periphery of the manifold 1400 is provided with a high pressure ring groove 1410 and a low pressure ring groove 1420 of the manifold, and the bottom wall of the high pressure ring groove 1410 of the manifold is provided with a constant connection with the rotating shaft.
- the liquid resistance installation hole 1430 communicated with the control oil groove, the bottom wall of the low pressure ring groove 1420 of the manifold is provided with a low pressure flow hole 1440 which is always connected with the pressure relief oil groove of the rotating shaft; and the high pressure ring groove 1410 of the manifold is connected to
- the liquid resistance installation hole 1430 forms the second high pressure oil passage section, and the low pressure ring groove 1420 and the low pressure flow hole 1440 of the manifold form the second low pressure oil passage section.
- each side of the casing body 1300 is provided with a plunger cover 1330 , and the plunger cover 1330 and each side of the casing body 1300 form a plunger cavity 1100 .
- each first hydraulic control check valve includes a first check valve body 4100 and a first check valve core 4200, and the first check valve body 4100 is provided with There are a first valve body oil control chamber 4110, a first valve body high pressure chamber 4120 and a first valve body low pressure chamber 4130, the first one-way valve core 4200 is movably mounted in the first one-way valve body 4100 and can be controlled
- the connection between the first valve body high pressure chamber 4120 and the first valve body low pressure chamber 4130, the first valve body low pressure chamber 4130 is connected with the corresponding plunger chamber 1100, and the first valve body high pressure chamber 4120 is connected with the high pressure oil circuit
- the first valve body oil control chamber 4110 is alternately connected to the first distribution upper half ring groove 3400 and the first distribution lower half ring groove 3500.
- the first one-way valve body 4100 is provided with a first movable cavity 4140
- the first one-way valve core 4200 includes a first valve core column 4210 and two fixedly connected to the first valve core column 4210 respectively.
- the first valve core block 4220 and the second valve core block 4230 at the end of the valve core block 4220, the first valve core block 4210 is movably sleeved in the first movable cavity 4140 and can drive the first valve core block 4220 and the second valve core block 4230 to synchronize Move
- the first valve core block 4220 is located in the first valve body oil control chamber 4110
- the first valve core block 4220 separates the first valve body oil control chamber 4110 into two independent first valve body oil control chambers 4111 and 4112.
- the second valve core block 4230 is located in the high pressure chamber 4120 of the first valve body and can move between opening the high pressure chamber 4120 of the first valve body and closing the high pressure chamber 4120 of the first valve body, and a first valve core elastic member 4300 is additionally provided.
- the first valve core elastic member 4300 is sandwiched between the first valve core block 4220 and the cavity wall of the first valve body oil control cavity 4110 .
- each second hydraulically controlled check valve includes a second check valve body 5100 and a second check valve core 5200, and the second check valve body 5100 is provided with a second valve body oil control cavity , the second valve body high pressure chamber and the second valve body low pressure chamber, the second one-way valve core 5200 is movably mounted in the second one-way valve body 5100 and can control the second valve body high pressure chamber and the second valve body
- the connection between the low pressure chambers of the second valve body is connected with the corresponding plunger chamber
- the second valve body low pressure chamber is connected with the low pressure oil circuit
- the second valve body oil control chamber is connected with the second distribution upper half ring
- the grooves 3600 and the lower half ring grooves 3700 of the second flow distribution are alternately connected.
- the second one-way valve body is provided with a second movable cavity
- the second one-way valve core includes a second valve core column and a third valve core respectively fixed on both ends of the second valve core column and the fourth valve core block
- the second valve core column is movably sleeved in the second movable cavity and can drive the third valve core block to move synchronously with the fourth valve core block
- the third valve core block is located in the second valve core block
- the second valve body oil control chamber is divided into two independent second valve body oil control chambers by the third valve core block
- the fourth valve core block is located in the high pressure chamber of the second valve body and can be opened when the first valve body is opened.
- the second valve body moves between the high pressure chamber and the second valve body high pressure chamber, and a second valve core elastic member is additionally provided.
- the second valve core elastic member is sandwiched between the third valve core block and the second valve body oil control cavity. between the walls.
- the structure of the second one-way valve is exactly the same as that of the first one-way valve.
- the housing body 1300 is provided with a first oil control hole 1350 that communicates with the first valve body oil control chamber 4110 , and is used to communicate the manifold high pressure ring groove 141 with the first valve
- the first high pressure through hole 1360 in the high pressure chamber 4120 of the body, the manifold 1400 is provided with a second oil control hole 1450 that communicates with the first oil control hole 1350 , and the second oil control hole 1450 is connected with the first distribution ring of the rotating shaft 3000 As shown in FIG.
- the housing body 1300 is further provided with a third oil control hole 1370 communicating with the oil control cavity of the second valve body, and a low pressure ring groove 1420 for connecting the manifold and the second valve body
- the first low pressure through hole 1380 of the low pressure chamber, the manifold 1400 is further provided with a fourth oil control through hole 1460 communicated with the third oil control branch hole 1370 , the fourth oil control through hole 1460 and the second distribution ring groove of the rotating shaft 3000 Corresponding.
- Each plunger assembly can slide up and down within the corresponding plunger cavity 1100 .
- each plunger assembly includes a plunger 1500, a plunger shoe 1510 and a plunger return ring 1520, the plunger 1500 is slidably connected in the plunger cavity 1100 up and down, and the plunger shoe 1510
- the top end is sleeved in the plunger 1500
- the bottom end of the plunger shoe 1510 is abutted against the outer ring of the double row full cylindrical roller bearing 2100
- the plunger return ring 1520 is sleeved at the bottom end of the plunger shoe 1510
- the main shaft 2000 is rotatably attached to the housing 1000 and is drivingly connected to all the plunger assemblies.
- the main shaft 2000 is rotatably attached to the housing body 1300 and protrudes from the front end surface of the housing body 1300 .
- the rotating shaft 3000 is rotatably mounted in the rotating shaft cavity 1200 and is fixedly connected to the main shaft 2000.
- the outer periphery of the rotating shaft 3000 is provided with a control oil groove 3200, a pressure relief oil groove 3300, a first distribution ring groove and a second distribution ring groove.
- the high pressure oil circuit is always connected, the pressure relief oil groove 3300 is always connected with the low pressure oil circuit, the first distribution ring groove is divided into the first distribution upper half ring groove 3400 and the first distribution lower half ring groove 3500, and the second distribution ring groove is divided into the first distribution ring groove.
- the second distribution upper half ring groove 3600 and the second distribution lower half ring groove 3700, the control oil groove 3200 is always connected with the first distribution upper half ring groove 3400 and the second distribution lower half ring groove 3700, and the pressure relief oil groove 3300 is always connected with the first distribution ring groove 3400 and the second distribution lower half ring groove 3700.
- the lower half ring groove 3500 for distribution is communicated with the second upper half ring groove 3600 for distribution.
- the rotating shaft 3000 is provided with two first connecting oil holes 3800 and two second connecting oil holes 3900 extending along its axial direction,
- One of the first connection oil holes 3800 connects the control oil groove 3200 with the first distribution upper half ring groove 3400, and the other first connection oil hole 3800 connects the control oil groove 3200 with the second distribution lower half ring groove 3700;
- One of the second connection oil holes 3900 connects the pressure relief oil groove 3300 with the first distribution lower half ring groove 3500, and the other second connection oil hole 3900 connects the pressure relief oil groove 3300 with the second distribution upper half ring groove 3600 Pass.
- the working method of the radial piston hydraulic device includes:
- the high pressure oil circuit is connected to the pressure oil source, the high pressure oil circuit is the oil inlet channel, and the low pressure oil circuit is the oil outlet channel:
- the corresponding first valve body oil control cavity 4110 is connected to the first distribution upper half ring groove 3400, then the first valve body oil control cavity 4110 flows into the high pressure oil, so that the first valve body oil control cavity 4110 flows into the high pressure oil.
- the one-way valve core 4200 controls the first valve body high pressure chamber 4120 to communicate with the first valve body low pressure chamber 4130; the corresponding second valve body oil control chamber is connected to the second distribution upper half ring groove 3600, then the second valve body
- the body control oil chamber flows into the low pressure oil, so that the second one-way valve core 5200 controls the second valve body high pressure chamber to disconnect from the second valve body low pressure chamber, and the high pressure oil flows through the high pressure oil circuit and the first valve body high pressure chamber 4120 ,
- the low-pressure cavity 4130 of the first valve body enters the corresponding plunger cavity 1100, pushes the plunger 1500 to move downward, the volume of the plunger cavity 1100 increases, and drives the main shaft 2000 to make a positive circular motion until the plunger assembly reaches the bottom bit.
- the flow direction of the high-pressure oil is as follows: the high-pressure oil enters the high-pressure ring groove 1410 of the manifold from the first high-pressure oil section 1310, then enters the high-pressure chamber 4120 of the first valve body through the first high-pressure through hole 1360, and then flows from the first valve body.
- the low pressure chamber 4130 enters the plunger chamber 1100 .
- the plunger assembly When the plunger assembly is in the bottom position, the main shaft 2000 and the rotating shaft 3000 both rotate 180 degrees in the forward direction, and the corresponding first valve body oil control chamber 4110 is connected to the first distribution lower half ring groove 3500, then the first valve body
- the oil control chamber 4110 flows into the low pressure oil, so that the first one-way valve core 4200 controls the first valve body high pressure chamber 4120 to be disconnected from the first valve body low pressure chamber 4130; the corresponding second valve body oil control chamber and the lower half of the second distribution flow
- the ring groove 3700 is connected, the oil control chamber of the second valve body flows into the high pressure oil, so that the second check valve core 5200 controls the high pressure chamber of the second valve body to communicate with the low pressure chamber of the second valve body;
- the plunger assembly Under the action of the thrust and the inertial force of the main shaft, the plunger assembly moves upward, the volume of the plunger cavity 1100 is reduced, and the oil in the plunger cavity 1100 passes through the high pressure cavity of the second valve
- the oil flow in the plunger cavity 1100 is directed as follows: the oil in the plunger cavity 1100 passes through the second valve body high pressure cavity, the second valve body low pressure cavity, and the second valve body low pressure cavity.
- a low pressure through hole 1380 flows from the low pressure ring groove 1420 of the manifold through the first low pressure oil section and then flows out.
- the reciprocating motion of several plunger assemblies makes the main shaft 2000 continuously rotate in the positive direction, so as to realize the conversion of hydraulic energy into mechanical energy.
- the high-pressure oil circuit is connected to the high-pressure oil tank or the hydraulic load, the high-pressure oil circuit is the oil outlet channel, the low-pressure oil circuit is connected to the low-pressure oil tank, and the low-pressure oil circuit is the oil inlet channel;
- the reverse rotation of the main shaft 2000 drives at least one plunger assembly to move downward from the top position, then the volume of the corresponding plunger cavity 1100 increases, and a vacuum is generated, and the pressure in the plunger cavity 1100 is lower than the low-pressure fuel tank.
- the valve body oil control cavity is connected to the second distribution upper half ring groove 3600, the second one-way valve core 5200 controls the second valve body high pressure cavity to communicate with the second valve body low pressure cavity; the first valve body oil control cavity 4110 is connected to the second valve body low pressure cavity.
- the first half ring groove 3400 of the first valve body is connected, the first one-way valve core 4200 controls the first valve body high pressure chamber 4120 to be disconnected from the first valve body low pressure chamber 4130, and the oil in the low pressure tank flows through the first low pressure oil in turn.
- the road section 1320, the low pressure ring groove 1420 of the manifold, the first low pressure through hole 1380, the second valve body low pressure cavity, and the second valve body high pressure cavity enter the plunger cavity 1100 until the plunger assembly moves to the bottom position.
- the main shaft 2000 drives the rotating shaft 3000 to reversely rotate 180 degrees;
- the main shaft 2000 continues to rotate 180 degrees in the opposite direction, the plunger assembly starts to move upward, the volume of the corresponding plunger cavity 1100 decreases, and the pressure increases, and its pressure is higher than the pressure at the high-pressure oil tank or the hydraulic load.
- the body control oil chamber 4110 is connected to the first distribution lower half ring groove 3500, the first one-way valve core 4200 controls the first valve body high pressure chamber 4120 to communicate with the first valve body low pressure chamber 4130; the second valve body oil control chamber is connected to The second distributing lower half ring groove 3700 is connected, the second one-way valve core 5200 controls the high pressure chamber of the second valve body to be disconnected from the low pressure chamber of the second valve body, and the oil in the plunger chamber 1100 flows through the first valve body in turn.
- the valve body low pressure chamber 4130, the first valve body high pressure chamber 4120, the first high pressure through hole 1360, and the manifold high pressure ring groove 1410 enter the high pressure oil tank or the hydraulic load to realize the oil discharge movement of the plunge
- the plurality of plunger assemblies are driven by the reverse rotation of the main shaft 2000, and each plunger cavity 1100 inhales low-pressure oil, and forms pressure oil for discharge, realizing the conversion of mechanical energy into hydraulic energy.
- the radial plunger hydraulic device includes a housing 6000, five plunger assemblies, a main shaft 7000, a confluence Disk 8000, a distribution plate 9000, a first hydraulic control check valve, and five second hydraulic control check valves.
- the main shaft 7000 is rotatably attached to the housing 6000 and is connected to all the plunger assemblies in a driving manner, and each plunger assembly can slide up and down in the corresponding plunger cavity 6100 .
- the main shaft 7000 includes a main shaft body 7100 and a rotating shaft 7200 , and the plunger assembly is connected with the main shaft body 7100 in a driving manner.
- the center of the manifold 8000 is provided with a shaft hole 8100 , the shaft 7200 passes through the shaft hole 8100 and two ends of the shaft 7200 are respectively connected to the main shaft 7100 and the distribution plate 9000 .
- the plunger assembly includes a plunger 7300, a plunger shoe 7400, and a plunger return ring 7500.
- a first annular groove 8200 and a second annular groove 8300 communicate with the high-pressure oil passage 6140 and the low-pressure oil passage 6150 on the outer periphery of the manifold 8000, respectively, and a distribution cavity 8400 is also provided on the end surface thereof.
- the manifold 8000 is provided with a manifold boss 8500
- the distribution cavity 8400 is set at the manifold boss 8500
- the manifold 9000 is connected to the manifold boss 8500 .
- 8500 face flush
- the bottom wall of the distribution chamber 8400 is provided with five first confluence holes 8441 and five annularly spaced ones, which are arranged at annular intervals and communicate with the first valve body oil control chamber.
- the second confluence hole 8442 communicated with the oil control cavity of the second valve body, the first confluence hole 8441 and the second confluence hole 8442 are arranged concentrically, and the first confluence hole 8441 is located in the inner circle of the second confluence hole 8442 .
- the first and second bus holes 8441 and 8442 both extend to the outer peripheral surface of the bus plate 8000 .
- the housing 6000 is further provided with a first control oil hole 6220 communicating with the oil control cavity of the first valve body and a second control oil hole 6230 communicating with the oil control cavity of the second valve body , the first control oil hole 6220 communicates with the first confluence hole 8441 , and the second control oil hole 6230 communicates with the second confluence hole 8442 .
- the flow distribution of the distribution plate 9000 to the first valve body oil control cavity and the second valve body oil control cavity is converted into the flow distribution to the first confluence hole 8441 and the second confluence hole 8442 on the bottom wall of the flow distribution cavity 8400 .
- the distribution plate 9000 is rotatably mounted in the distribution cavity 8400 and connected to the main shaft 7000 in a driving manner.
- the back of the distribution plate 9000 abuts against the bottom wall of the distribution cavity 8400 , and the high-pressure distribution groove and the low-pressure distribution groove are both located on the back of the distribution plate 9000 , the first confluence hole 8441 and the second confluence hole 8442 can be respectively The high pressure distribution groove and the low pressure distribution groove are alternately connected.
- FIG. 26-1 there are two high-pressure distribution grooves, both of which are arc-shaped. There are two distribution grooves, both of which are arc-shaped.
- the two low-pressure distribution grooves are a low-pressure inner distribution groove 9300 and a low-pressure outer distribution groove 9400.
- the high-pressure inner distribution groove 9100 and the low-pressure inner distribution groove 9300 are located on the same circumference.
- the high-pressure outer distribution groove 9200 and the low-pressure outer distribution groove 9400 are located on the same circumference and arranged symmetrically; the first confluence hole 8441 corresponds to the circumference where the high-pressure inner distribution groove 9100 is located; the second confluence hole 8442 Corresponding to the circumference where the high-pressure outer distribution groove 9200 is located.
- the front of the distribution plate 9000 is provided with an eccentric groove 9110 and two high-pressure distribution holes 9120 respectively connected with the two high-pressure distribution grooves.
- the two high-pressure distribution holes 9120 Located in the eccentric groove 9110.
- the radial plunger hydraulic device further includes a wear-resistant gasket 9400 , as shown in FIG. 23 , the wear-resistant gasket 9400 is sandwiched between the distribution plate 9000 and the bottom wall of the distribution cavity 8400 .
- Each first hydraulically controlled check valve includes a first check valve body 9500 and a first check valve core.
- the first check valve body 9500 is provided with a first valve body oil control chamber 9510, a first valve body high pressure
- the cavity 9520 and the first valve body low pressure cavity 9530, the first valve body oil control cavity 9510 are alternately connected with the high pressure distribution groove and the low pressure distribution groove. That is, the rotation of the distribution plate 9000 can make the first manifold hole 8441 connect with the high-pressure inner distribution groove 9100 and the low-pressure inner distribution groove 9300 alternately.
- Each second hydraulically controlled check valve includes a second check valve body 9600 and a second check valve core.
- the second check valve body 9600 is provided with a second valve body oil control chamber 9610, a second valve body high pressure
- the cavity 9620 and the second valve body low pressure cavity 9630, the second one-way valve core is movably mounted in the second one-way valve body 9600 and can control the second valve body high pressure cavity 9620 and the second valve body low pressure cavity 9630
- the second valve body high pressure chamber 9620 communicates with the corresponding plunger chamber
- the second valve body low pressure chamber 9630 communicates with the second ring groove 8300
- the second valve body oil control chamber 9610 communicates with the high pressure distribution groove
- the low pressure distribution grooves are switched on alternately.
- the rotation of the distribution plate 9000 can make the second confluence hole 8442 connect with the high-pressure external distribution groove 9200 and the low-pressure external distribution groove 9400 alternately.
- the specific structure of the second one-way valve is exactly the same as that of the first one-way valve.
- the working method of the radial piston hydraulic device is:
- the high pressure oil circuit 6140 is connected to the pressure oil source, the high pressure oil circuit is the oil inlet channel, and the low pressure oil circuit 6150 is the oil outlet channel:
- the corresponding first valve body oil control chamber 9510 is connected to the high-pressure distribution groove, that is, the first confluence hole 8441 is connected to the high-pressure inner distribution groove 9100.
- the valve core controls the first valve body high pressure chamber 9520 to communicate with the first valve body low pressure chamber 9530; the corresponding second valve body oil control chamber 9610 is connected to the low pressure distribution groove, that is, the second confluence hole 8442 and the low pressure If the external distribution groove 9400 is connected, the second one-way valve core controls the high pressure chamber 9520 of the second valve body to be disconnected from the low pressure chamber 9530 of the second valve body, and the high pressure oil flows through the high pressure oil passage 6140, the first ring groove 8200, The first valve body high pressure cavity 9520 and the first valve body low pressure cavity 9530 enter the corresponding plunger cavity 6100, push the plunger 7300 to move downward, the volume of the plunger cavity 6100 increases, and drives the main shaft 7000 to make a positive circular motion, until
- the main shaft rotates 180 degrees in the forward direction, and the corresponding first valve body oil control chamber 9510 is connected to the low pressure distribution groove, that is, the first confluence hole 8411 is connected to the low pressure inner distribution groove 9300
- the first one-way valve core controls the first valve body high pressure chamber 9520 to be disconnected from the first valve body low pressure chamber 9530; the corresponding second valve body oil control chamber 9610 is communicated with the high pressure distribution groove, that is, the second valve body
- the confluence hole 8442 is communicated with the high pressure outer distribution groove 9200, then the second one-way valve core controls the second valve body high pressure chamber 9620 to communicate with the second valve body low pressure chamber 9630, and the thrust of other plunger components and the inertia of the main shaft 7000
- the plunger assembly moves upward, the volume of the plunger cavity 6100 decreases, and the oil in the plunger cavity 6100 passes through the second valve body high pressure cavity 9620, the second valve body low pressure cavity 9
- the reciprocating motion of several plunger assemblies makes the main shaft 7000 continuously rotate in the positive direction, so as to realize the conversion of hydraulic energy into mechanical energy.
- the high-pressure oil circuit 6140 is connected to the high-pressure oil tank or the hydraulic load, and the high-pressure oil circuit is an oil outlet channel, and the low-pressure oil circuit 6150 is connected to the low-pressure oil tank and the low-pressure oil circuit is an oil inlet channel;
- the reverse rotation of the main shaft 7000 drives at least one plunger assembly to move downward from the top position, the corresponding plunger cavity 6100 increases in volume, and a vacuum is generated, and the pressure in the plunger cavity 6100 is lower than the low-pressure fuel tank.
- the second The valve body oil control chamber 9610 is connected to the high pressure outer distribution groove 9200, the second one-way valve core controls the second valve body high pressure chamber 9620 to communicate with the second valve body low pressure chamber 9630; the first valve body oil control chamber 9510 is connected to the low pressure inner
- the distribution tank 9300 is connected, the first one-way valve core controls the first valve body high pressure chamber 9520 to be disconnected from the first valve body low pressure chamber 9530, and the oil in the low pressure tank flows through the low pressure oil circuit 6150 and the second ring groove 8300 ,
- the second valve body low pressure chamber 9630 and the second valve body high pressure chamber 9620 enter the plunger chamber 6100 until the plunger assembly moves to the bottom position, at which time the spindle 7000 drives the rotating shaft to
- the main shaft 7000 continues to rotate 180 degrees in the opposite direction, the plunger assembly starts to move upward, the volume of the corresponding plunger cavity 6100 decreases, the pressure increases, and its pressure is higher than the pressure at the high-pressure oil tank or the hydraulic load, at this time, the first valve
- the body control oil cavity 9510 is connected with the high pressure inner distribution groove 9100, the first one-way valve core controls the first valve body high pressure cavity 9520 to communicate with the first valve body low pressure cavity 9530; the second valve body oil control cavity 9610 is connected with the low pressure external flow distribution
- the groove 9400 is connected, the second one-way valve core controls the second valve body high pressure chamber 9620 to be disconnected from the second valve body low pressure chamber 9630, and the oil in the plunger chamber 6100 flows through the first valve body low pressure chamber 9530,
- the first valve body high pressure chamber 9520 and the first ring groove 8200 enter the high pressure oil tank or the hydraulic load to realize the oil discharge movement of the plunger assembly; driven by the reverse rotation of the main shaft 7000, each
- the invention discloses a radial plunger hydraulic device and a working method using a hydraulic control one-way valve for flow distribution.
- the radial plunger hydraulic device comprises a casing, a plurality of plunger assemblies, a main shaft, and the same number as the plunger assemblies and one A corresponding first hydraulic control one-way valve, a second hydraulic control one-way valve corresponding to the same number as the plunger assembly, and a flow distribution plate.
- the radial piston hydraulic device adopts hydraulic control check valve for flow distribution, which provides a new flow distribution method. Thanks to the excellent sealing performance of the hydraulic control check valve, the hydraulic motor can work under high pressure, and can achieve relatively high pressure. High volumetric efficiency.
- the device can be used not only as a hydraulic motor, but also as a hydraulic pump, and can be used in a hydraulic system that needs to realize a power recovery function, and has industrial practicability.
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Abstract
采用液控单向阀配流的径向柱塞液压装置及工作方法,径向柱塞液压装置包括壳体(200)、若干个柱塞组件、一个主轴(300)、与柱塞组件个数相同且一一对应的第一液控单向阀、与柱塞组件个数相同且一一对应的第二液控单向阀和一个配流盘(400)。该径向柱塞液压装置采用液控单向阀配流,提供了一种全新的配流方式,得益于液控单向阀极佳的密封性,液压马达可工作在高压下,且可达到较高的容积效率。该装置不仅可以作为液压马达使用,也可作为液压泵使用,能够用于需要实现功率回收功能的液压系统中。
Description
本发明涉及采用液控单向阀配流的径向柱塞液压装置及工作方法。
径向柱塞液压泵是一类液压动力装置,用于为液压系统提供具有一定压力的油液。径向柱塞液压马达是一类常用的液压执行元件,用于驱动工作机构以一定的速度旋转。液压泵或液压马达的输出功率取决于其工作压力和流量,工作压力越高,其输出功率越大,也就能驱动更大的负载。
现有的径向柱塞液压装置所采用的配流方式主要包括:轴配流、端面配流和单向阀配流三种。其中采用轴配流和端面配流的装置都可分别工作在泵状态和马达状态,即当由传动轴输入转矩时,装置可工作在泵状态,向外泵出高压流体;而当向装置输入高压流体时,装置可工作在马达状态,由传动轴向外输出转矩;但是由于上述两种配流结构中存在间隙,且随着运动副的磨损,间隙将逐渐增大,因此,其工作压力的提高受到限制。单向阀配流具有良好的密封性,能够用于径向柱塞液压泵,实现高压和超高压,但是由于普通的单向阀只允许单向流动,因此无法用于为径向柱塞液压马达配流,该类径向柱塞液压装置仅能工作在泵状态。
发明内容
本发明提供了采用液控单向阀配流的径向柱塞液压装置及工作方 法,其克服了背景技术所存在的不足。本发明解决其技术问题所采用的技术方案之一是:
采用液控单向阀配流的径向柱塞液压装置,它包括壳体、若干个柱塞组件、一个主轴、与柱塞组件个数相同且一一对应的第一液控单向阀、与柱塞组件个数相同且一一对应的第二液控单向阀和一个配流盘;
所述壳体内设有若干个柱塞腔和一个配流腔,所述配流腔设有高压总口和低压总口;
每一柱塞组件可在对应的柱塞腔内上下滑动;
所述主轴转动装接在壳体且传动连接所有的柱塞组件;
所述配流盘转动装接在配流腔内且其固定连接主轴,其设有始终与高压总口相连通的高压配流槽和始终与低压总口相连通的低压配流槽;
每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体设有第一活动腔、第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与高压总口相连通,第一阀体控油腔与高压配流槽和低压配流槽交替接通;
每一第二液控单向阀结构与第一液控单向阀结构相同且其包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二活动腔、第二阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第二单向阀芯活动装接在第二单向阀体内且其可控制第二阀体高压腔与第二阀体低压腔之 间的通断,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与低压总口相连通,第二阀体控油腔与高压配流槽和低压配流槽交替接通。
一较佳实施例之中:所述高压配流槽设有两个,且均呈圆弧形,两个高压配流槽分别为第一高压配流槽和第二高压配流槽,低压配流槽设有两个,且均呈圆弧形,两个低压配流槽分别为第一低压配流槽和第二低压配流槽,其中,第一高压配流槽与第一低压配流槽位于同一圆周上且对称布置,第二高压配流槽与第二低压配流槽位于同一圆周上且对称布置;所述配流腔底壁设有与第一阀体控油腔相连通的第一控制端口,该第一控制端口与第一高压配流槽所处的圆周相对应;所述配流腔底壁设有与第二阀体控油腔相连通的第二控制端口,该第二控制端口与第二高压配流槽所处的圆周相对应。
一较佳实施例之中:所述配流盘正面设有始终与高压总口相连通的若干个高压分流孔,所述配流盘侧面设有始终与低压总口相连通的若干个低压分流孔,两个高压配流槽和两个低压配流槽均位于配流盘背面,且两个高压配流槽与高压分流孔始终连通,两个低压配流槽与低压分流孔始终连通。
一较佳实施例之中:所述第一单向阀芯包括第一阀芯柱和分别固接在第一阀芯柱两端的第一阀芯块和第二阀芯块,所述第一阀芯柱活动套接在第一活动腔内且可带动第一阀芯块与第二阀芯块同步移动,第一阀芯块位于第一阀体控油腔内且第一阀芯块将第一阀体控油腔分隔为两个独立的第一阀体控油分腔,第二阀芯块位于第一阀体高压腔内且其可在 打开第一阀体高压腔和关闭第一阀体高压腔之间活动,另设有第一阀芯弹性件,该第一阀芯弹性件夹置在第一阀芯块和第一阀体控油腔腔壁之间;所述第二单向阀芯包括第二阀芯柱和分别固接在第二阀芯柱两端的第三阀芯块和第四阀芯块,所述第二阀芯柱活动套接在第二活动腔内且可带动第三阀芯块与第四阀芯块同步移动,第三阀芯块位于第二阀体控油腔内且第三阀芯块将第二阀体控油腔分隔为两个独立的第二阀体控油分腔,第四阀芯块位于第二阀体高压腔内且其可在打开第二阀体高压腔和关闭第二阀体高压腔之间活动,另设有第二阀芯弹性件,该第二阀芯弹性件夹置在第三阀芯块和第二阀体控油腔腔壁之间。
一较佳实施例之中:所述第一阀芯块设有朝向其中一第一阀体控油分腔的第一受压面,所述第二阀芯块设有第二受压面,第一受压面面积大于第二受压面面积;所述第三阀芯块设有朝向其中一第二阀体控油分腔的第三受压面,所述第四阀芯块设有第四受压面,第三受压面面积大于第四受压面面积;所述第一单向阀体还设有第一泄压孔,该第一泄压孔连通另一第一阀体控油分腔和第一阀体低压腔;所述第二单向阀体还设有第二泄压孔,该第二泄压孔连通另一第二阀体控油分腔和第一阀体低压腔。
本发明解决其技术问题所采用的技术方案之二是:
采用液控单向阀配流的径向柱塞液压装置的工作方法,其应用所述的采用液控单向阀配流的径向柱塞液压装置,包括:
该径向柱塞液压装置为液压马达时,高压总口与压力油源相连且高 压总口为进油口,低压总口为出油口:
当其中一个柱塞组件位于上顶位时,对应的第一阀体控油腔与高压配流槽相接通,对应的第二阀体控油腔与低压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相导通,第二单向阀芯控制第二阀体高压腔与第二阀体低压腔相断开,高压油液流经高压总口、第一阀体高压腔、第一阀体低压腔后进入对应的柱塞腔内,推动柱塞下行运动,柱塞腔容积增大,并带动主轴做正向圆周运动,直至柱塞组件到达下底位;
当该柱塞组件位于下底位时,主轴和配流盘均正向旋转180度,对应的第一阀体控油腔与低压配流槽相接通,对应的第二阀体控油腔与高压配流槽相连通,则第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相断开,第二单向阀芯控制第二阀体高压腔与第二阀体低压腔相导通,在其他柱塞组件的推力以及主轴惯性力的作用下,该柱塞组件上行运动,柱塞腔容积减小,柱塞腔内的油液通过第二阀体高压腔、第二阀体低压腔后从低压总口流出,实现单个柱塞组件的周期运动;若干个柱塞组件往复运动使主轴持续正向旋转,实现将液压能转化为机械能;
该径向柱塞液压装置为液压泵时,高压总口与高压油箱或液压负载相连且高压总口为出油口,低压总口与低压油箱相连且低压总口为进油口:
主轴反向转动带动至少一个柱塞组件从上顶位开始下行运动,则对应的柱塞腔容积增大,产生真空,柱塞腔内的压力低于低压油箱,无论 第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相连通;无论第一阀体控油腔与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相断开,低压油箱的油液流经低压总口、第二阀体低压腔、第二阀体高压腔进入该柱塞腔内,直至柱塞组件移动至下底位,此时主轴带动配流盘反向旋转了180度;
主轴继续反向转动180度,该柱塞组件开始上行运动,对应的柱塞腔容积减小,压力增大,其压力高于高压油箱或液压负载处的压力,此时无论第一阀体控油腔与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相连通;无论第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相断开,柱塞腔内的油液流经第一阀体低压腔、第一阀体高压腔后进入高压油箱或液压负载处,实现该柱塞组件的排油运动;若干个柱塞组件在主轴的反向转动带动下,各个柱塞腔吸入低压油液,并形成压力油排出,实现机械能转换为液压能。
本发明解决其技术问题所采用的技术方案之三是:
采用液控单向阀配流的径向柱塞液压装置,它包括壳体、若干个柱塞组件、一个主轴、一个转轴、与柱塞组件个数相同且一一对应的第一液控单向阀和第二液控单向阀;
所述壳体设有若干个柱塞腔、一个转轴腔、一个高压油路和一个低压油路;
每一柱塞组件可在对应的柱塞腔内上下滑动;
所述主轴转动装接在壳体且传动连接所有的柱塞组件;
所述转轴转动装接在转轴腔内且其固定连接主轴,其外周设有控制油槽、泄压油槽、第一配流环槽和第二配流环槽,所述控制油槽与高压油路始终连通,泄压油槽与低压油路始终连通,第一配流环槽分隔成第一配流上半环槽和第一配流下半环槽,第二配流环槽分隔呈第二配流上半环槽和第二配流下半环槽,控制油槽始终与第一配流上半环槽和第二配流下半环槽相连通,泄压油槽始终与第一配流下半环槽与第二配流上半环槽相连通;
每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体设有第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与高压油路相连通,第一阀体控油腔与第一配流上半环槽、第一配流下半环槽交替接通;
每一第二液控单向阀结构与第一液控单向阀结构相同且其包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二阀体控油腔、第二阀体高压腔和第二阀体低压腔,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与低压油路相连通,第二阀体控油腔与第二配流上半环槽、第二配流下半环槽交替接通。
一较佳实施例之中:所述转轴设有沿着其轴向方向延伸的两个第一 连接油孔和两个第二连接油孔,其中一个第一连接油孔将控制油槽与第一配流上半环槽进行接通,另一个第一连接油孔将控制油槽与第二配流下半环槽进行接通;其中一个第二连接油孔将泄压油槽与第一配流下半环槽进行接通,另一个第二连接油孔将泄压油槽与第二配流上半环槽进行接通。
一较佳实施例之中:所述壳体包括壳本体和汇流盘,所述主轴转动装接在壳本体且其伸出壳本体之前端面,所述柱塞腔设置在壳本体的外周,所述汇流盘固接在壳本体的后端,所述转轴腔设置在汇流盘且前后贯穿汇流盘;所述壳本体设有第一高压油路段和第一低压油路段,所述汇流盘设有与第一高压油路段相连通的第二高压油路段和与第一低压油路段相连通的第二低压油路段,第一高压油路段与第二高压油路段形成所述的高压油路,第一低压油路段与第二低压油路段形成所述的低压油路。
一较佳实施例之中:所述汇流盘外周设有汇流盘高压环槽和汇流盘低压环槽,所述汇流盘高压环槽底壁设有始终与控制油槽相连通的液阻安装孔,所述汇流盘低压环槽底壁设有始终与泄压油槽相连通的低压流孔,所述汇流盘高压环槽与液阻安装孔形成所述的第二高压油路段,所述汇流盘低压环槽与低压流孔形成所述的第二低压油路段;所述壳本体设有与第一阀体控油腔相连通的第一控油分孔、以及用于连通汇流盘高压环槽与第一阀体高压腔的第一高压通孔,所述汇流盘设有与第一控油分孔相连通的第二控油分孔,第二控油分孔与第一配流环槽相对应;所 述壳本体还设有与第二阀体控油腔相连通的第三控油分孔、以及用于连通汇流盘低压环槽与第二阀体低压腔的第一低压通孔,所述汇流盘还设有与第三控油分孔相连通的第四控油通孔,第四控油通孔与第二配流环槽相对应。
本发明解决其技术问题所采用的技术方案之四是:
采用液控单向阀配流的径向柱塞液压装置,它包括壳体、若干个柱塞组件、一个主轴、一个汇流盘、一个配流盘、与柱塞组件个数相同且一一对应的第一液控单向阀和第二液控单向阀;
所述壳体设有若干个柱塞腔、若干个第一阀腔、若干个第二阀腔、一个装配腔、一个高压油路和一个低压油路;
每一柱塞组件可在对应的柱塞腔内上下滑动;
所述主轴转动装接在壳体且传动连接所有的柱塞组件;
所述汇流盘固接在装配腔内,其外周设有分别与高压油路、低压油路相连通的第一环槽和第二环槽,且其端面还设有配流腔;
所述配流盘转动装接在配流腔内且其传动连接主轴,其设有可与高压油路相连通的高压配流槽和可与低压油路相连通的低压配流槽;
每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体安装在第一阀腔内且其设有第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与第一环槽相连通,第一阀 体控油腔与高压配流槽、低压配流槽交替接通;
每一第二液控单向阀结构与第一液控单向阀结构相同且其包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二阀体控油腔、第二阀体高压腔和第二阀体低压腔,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与第二环槽相连通,第二阀体控油腔与高压配流槽、低压配流槽交替接通。
一较佳实施例之中:所述配流腔底壁设有若干个环形间隔布置且与第一阀体控油腔相连通的第一汇流孔和若干个环形间隔布置且与第二阀体控油腔相连通的第二汇流孔,第一汇流孔与第二汇流孔同心布置且第一汇流孔位于第二汇流孔内圈;所述配流盘背面靠抵在配流腔底壁且所述高压配流槽和低压配流槽均位于配流盘背面,第一汇流孔与第二汇流孔可分别与高压配流槽、低压配流槽交替接通。
一较佳实施例之中:所述高压配流槽设有两个,且均呈圆弧形,两个高压配流槽分别为高压内配流槽和高压外配流槽,低压配流槽设有两个,且均呈圆弧形,两个低压配流槽分别为低压内配流槽和低压外配流槽,其中,高压内配流槽与低压内配流槽位于同一圆周上且对称布置,高压外配流槽与低压外配流槽位于同一圆周上且对称布置;所述第一汇流孔与高压内配流槽所处的圆周相对应;所述第二汇流孔与高压外配流槽所处的圆周相对应;所述配流盘正面设有两个分别与两个高压配流槽相连通的高压分流孔,所述配流盘侧面设有两个分别与两个低压配流槽相连通的低压分流孔;所述壳体端面还设有与两个高压分流孔相连通的 第一控制高压口,所述汇流盘外周面还设有与两个低压分流孔相连通的第二控制低压口。
一较佳实施例之中:所述第一汇流孔和第二汇流孔均延伸至汇流盘的外周面;所述壳体还设有与第一阀体控油腔相连通的第一控制油孔以及与第二阀体控油腔相连通的第二控制油孔,第一控制油孔与第一汇流孔相连通,第二控制油孔与第二汇流孔相连通。
本技术方案与背景技术相比,它具有如下优点:
1.该些径向柱塞液压装置采用液控单向阀配流,提供了一种全新的配流方式,得益于液控单向阀极佳的密封性,液压马达可工作在高压下,且可达到较高的容积效率。该些装置不仅可以作为液压马达使用,也可作为液压泵使用,能够用于需要实现功率回收功能的液压系统中。
2.结构紧凑,传动简单,防泄漏措施良好。
下面结合附图和实施例对本发明作进一步说明。
图1绘示了第一实施例的径向柱塞液压马达的立体分解示意图。
图2绘示了第一实施例的径向柱塞液压马达的的轴向剖视示意图。
图3绘示了图2的A-A侧视示意图。
图4绘示了图2的B-B剖视图。
图5绘示了第一实施例的第一液控单向阀的剖视示意图。
图6绘示了第一实施例的第一液控单向阀的立体分解示意图。
图7绘示了第一实施例的配流盘的立体结构图。
图8绘示了第一实施例的配流盘的正面示意图。
图9绘示了第一实施例的液压马达的原理示意图。
图10绘示了第一实施例的液压泵的原理示意图。
图11绘示了第二实施例的径向柱塞液压装置的立体分解示意图。
图12绘示了第二实施例的径向柱塞液压装置的纵向剖视图。
图13绘示了第二实施例的径向柱塞液压装置的剖视示意图之一。
图14绘示了第二实施例的径向柱塞液压装置的剖视示意图之二。
图15绘示了壳本体的剖视示意图之一。
图16绘示了壳本体的剖视示意图之二。
图17-1绘示了第二实施例的汇流盘的剖视示意图之一。
图17-2绘示了第二实施例的汇流盘的剖视示意图之二。
图17-3绘示了第二实施例的汇流盘的剖视示意图之三。
图18绘示了第二实施例的转轴的侧视示意图。
图19绘示了第二实施例的转轴的剖视示意图。
图20-1绘示了图19的C-C剖视示意图。
图20-2绘示了图19的D-D剖视示意图。
图20-3绘示了图19的E-E剖视示意图。
图20-4绘示了图19的F-F剖视示意图。
图21-1绘示了第二实施例的第一液控单向阀的剖视示意图。
图21-2绘示了第二实施例的第一液控单向阀的侧视示意图。
图22绘示了第三实施例的径向柱塞液压装置的立体分解示意图。
图23绘示了第三实施例的径向柱塞液压装置的剖视图之一。
图24绘示了第三实施例的径向柱塞液压装置的剖视图之二。
图25-1绘示了第三实施例的汇流盘的剖视示意图。
图25-2绘示了第三实施例的汇流盘的俯视示意图。
图25-3绘示了第三实施例的汇流盘的侧视示意图。
图25-4绘示了图25-2的G-G剖视示意图。
图25-5绘示了图25-2的H-H剖视示意图。
图26-1绘示了第三实施例的配流盘的仰视示意图。
图26-2绘示了第三实施例的配流盘的剖视示意图。
图26-3绘示了第三实施例的配流盘的俯视示意图。
本发明的权利要求书、说明书及上述附图中,除非另有明确限定,如使用术语“第一”、“第二”或“第三”等,都是为了区别不同对象,而不是用于描述特定顺序。
本发明的权利要求书、说明书及上述附图中,除非另有明确限定,对于方位词,如使用术语“中心”、“横向”、“纵向”、“水平”、“垂直”、“顶”、“底”、“内”、“外”、“上”、“下”、“前”、“后”、“左”、“右”、“顺时针”、“逆时针”等指示方位或位置关系乃基于附图所示的方位和位置关系,且仅是为了便于叙述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位或以特定的方位构造和操作,所以也不能理解为限制本发明的具体保护范围。
本发明的权利要求书、说明书及上述附图中,除非另有明确限定,如 使用术语“固接”、“固定连接”,应作广义理解,即两者之间没有位移关系和相对转动关系的任何连接方式,也就是说包括不可拆卸的固定连接、可拆卸的固定连接、连为一体以及通过其他装置或元件固定连接。
本发明的权利要求书、说明书及上述附图中,如使用术语“包括”、“具有”、以及它们的变形,意图在于“包含但不限于”。
请查阅图1和图10,为采用液控单向阀配流的径向柱塞液压装置的具体实施例。所述的采用液控单向阀配流的径向柱塞液压装置,包括壳体200、若干个柱塞组件、一个主轴300、与柱塞组件个数相同且一一对应的第一液控单向阀、与柱塞组件个数相同且一一对应的第二液控单向阀和一个配流盘400。
所述壳体200内设有若干个柱塞腔210和一个配流腔220,所述配流腔220设有高压总口221和低压总口222。
本实施例中,如图1所示,所述壳体200包括依次连接且同轴布置的轴端盖230、壳本体240和配流端盖250,所述壳本体240设有所述的柱塞腔210,所述配流端盖250与壳本体240之后端面之间围成所述的配流腔220;所述高压总口221设置在配流端盖250之侧端面上,所述低压总口222设置在配流端盖250之外周面上。且,所述壳本体240包括壳本体座241和柱塞压盖242,柱塞压盖242与壳本体座241侧面之间围成所述的柱塞腔210。所述柱塞压盖242设有5个,柱塞腔210设有5个,每一柱塞腔210对应设置有一个第一液压单向阀和一个第二液压单向阀。柱塞腔210的个数不以此为限,也可为8个、10个不等。
所述柱塞组件可在柱塞腔210内上下滑动。
本实施例中,所述柱塞组件包括柱塞500和连杆滑靴510,所述柱塞500上下滑动连接在柱塞腔210内,所述连杆滑靴510顶端套接在柱塞500内,另设有偏心轮520和柱塞回程环530,所述偏心轮520套接在主轴300外,所述连杆滑靴510底端靠抵在偏心轮520上,所述柱塞回程环530套接在连杆滑靴510底端处,柱塞500在柱塞腔210内上下滑动可通过连杆滑靴510和回程环530带动偏心轮520和主轴300转动,此为液压马达的工作状态;或者,主轴300转动可通过连杆滑靴510和回程环530带动柱塞500在柱塞腔210内上下滑动,此为液压泵的工作状态。
所述主轴300转动装接在壳体且传动连接柱塞组件。如图2所示,偏心轮520的左右两侧分别设置有第一轴承540和第二轴承550,以对主轴300进行稳定支撑。且,如图1所示,所述主轴300末端设有第一传动键孔310。
所述配流盘400转动装接在配流腔220内且其传动连接主轴300,其设有始终与高压总口221相连通的高压配流槽和始终与低压总口222相连通的低压配流槽。
本实施例中,如图2所示,还包括传动短轴320,所述配流盘400背面设有第二传动键孔410,所述传动短轴320的两端分别与第一传动键孔310、第二传动键孔410相插接配合;另设有锁接螺钉330,该锁接螺钉330穿过配流盘400后与传动短轴320相螺接。由此,配流盘400与主轴 300可进行同步转动。
本实施例中,如图7所示,所述高压配流槽设有两个且均呈圆弧形并位于配流盘背面,两个高压配流槽分别为第一高压配流槽430和第二高压配流槽440,低压配流槽设有两个且均呈圆弧形并位于配流盘400背面,两个低压配流槽分别为第一低压配流槽450和第二低压配流槽460,其中,第一高压配流槽430与第一低压配流槽450位于同一大圆周上且对称布置,第二高压配流槽440与第二低压配流槽460位于同一小圆周上且对称布置。
本实施例中,如图8所示,所述配流盘400正面设有始终与高压总口221相连通的四个高压分流孔401,其中两个高压分流孔401位于小圆周上并与第二高压配流槽440相连通,另外两个高压分流孔401位于大圆周上并与第一高压配流槽430相连通。且,配流盘400正面还设有高压导流槽402,该高压导流槽402与四个高压分流孔401均连通且其与高压总口221相对应的连通。由此,高压油箱11作为进油箱时,其内的高压油液经过高压总口221后进入高压导流槽402内,再经过高压分流孔401进入第一高压配流槽430和第二高压配流槽440内。
所述配流盘400侧面设有始终与低压总口222相连通的四个低压分流孔403,其中两个低压分流孔403与第一低压配流槽450相连通,另外两个低压分流孔403与第二低压配流槽460相连通。且,如图4所示,配流盘400与配流腔220之间具有间隙404,低压总口222以及四个低压分流孔403均与该间隙404相连通。由此,低压油箱12作为出油箱时, 第一低压配流槽450和第二低压配流槽460内的低压油液通过各自的低压分流孔403进入配流盘400与配流腔220之间的间隙404,并从间隙404流至低压总口222后进入低压油箱12。
本实施例中,如图2所示,该液压马达还包括耐磨盘480,该耐磨盘480夹置在配流盘400和配流腔220底壁之间,所述传动短轴320穿过耐磨盘480后再与第二传动键孔410相插接。最好,在传动短轴320外周还设有支承套筒490,该支承套筒490外周位于壳本体240和耐磨盘480的连接处。
所述第一液控单向阀Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ个数具有五个,且均横向布置在壳本体240内。
如图5、6所示:每一第一液控单向阀Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ均包括第一单向阀体和第一单向阀芯,所述第一单向阀体设有第一活动腔110、第一阀体控油腔120、第一阀体高压腔130和第一阀体低压腔140,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔130与第一阀体低压腔140之间的通断,第一阀体低压腔140与对应的柱塞腔210相连通,第一阀体高压腔130与高压总口221相连通,第一阀体控油腔120与高压配流槽和低压配流槽交替接通。
具体的,壳体200之中心轴线为K1K2,其中靠近K1处的一端为壳体200的后端,靠近K2处的一端为壳体200的前端。如图3所示,壳本体240的K1端面处设有五个环形布置的高压端口243以及五个环形布置且位于高压端口243同一圆周上的低压端口244,五个高压端口243直接与 高压总口221相连通,五个低压端口244与配流盘400和配流腔220之间的间隙404相连通。壳本体的K1端面还设有五个环形间隔布置的第一控制端口223和五个环形间隔布置并位于第一控制端口223外侧的第二控制端口224,且第一控制端口223与配流盘400的第一高压配流槽430和第一低压配流槽450所处的大圆周相对应,第二控制端口224与配流盘400的第二高压配流槽440和第二低压配流槽460所处的小圆周相对应。同时,第一阀体控油腔120通过第一控油管610与第一控制端口223相连通。且,第一阀体高压腔130与对应的高压端口243相连通,第一阀体低压腔140与柱塞腔210之间通过第一低压管620相连接。
如图5、6所示,第一单向阀体包括第一阀体111和第二阀体112,第一阀体111与第二阀体112之间围成所述第一阀体控油腔120,第二阀体112左端面之中心设有所述的第一活动腔110,第二阀体112右端面之中心设有所述的第一阀体高压腔130,所述第一阀体低压腔140横向贯穿第二阀体112,第一活动腔110、第一阀体高压腔130和第一阀体低压腔140三者相连通。且,第一阀体高压腔130内壁设有第一导向斜面131。
第一阀体111外周面设有第一环形凹槽113,第一环形凹槽113底壁设有若干个第一通孔114,该第一通孔114与第一阀体控油腔120相连通;第二阀体112外周设有第二环形凹槽115,第二环形凹槽115底壁设有若干个第二通孔116,该第二通孔116与第一阀体低压腔140相连通。
所述第一单向阀芯包括第一阀芯柱150和分别固接在第一阀芯柱150两端的第一阀芯块160和第二阀芯块170,所述第一阀芯柱150活动套接 在第一活动腔110内且可带动第一阀芯块160与第二阀芯块170同步移动,第一阀芯块160位于第一阀体控油腔120内且第一阀芯块160将第一阀体控油腔120分隔为两个独立的第一阀体控油分腔121,第二阀芯块170位于第一阀体高压腔130内且其可在打开第一阀体高压腔130和关闭第一阀体高压腔130之间活动,另设有第一阀芯弹性件180,该第一阀芯弹性件180夹置在第一阀芯块160和第一阀体控油腔120腔壁之间。
所述第一阀芯块160设有朝向其中一第一阀体控油分腔121且呈圆锥形的第一受压面161,所述第二阀芯块170设有呈平直面的第二受压面171,第一受压面161面积大于第二受压面171面积。且,所述第一单向阀体还设有第一泄压孔190,该第一泄压孔190连通另一第一阀体控油分腔121和第一阀体低压腔140。该第一泄压孔190可避免位于右侧的第一阀体控油分腔121出现死腔导致的第一单向阀芯无法移动的情况发生。且,第二阀芯块170还设有可与第一导向斜面131相配合的第二导向斜面172,当第二导向斜面172靠抵在第一导向斜面131上时,阀体高压腔130处于关闭的状态,反之,第二导向斜面172离开第一导向斜面131时,阀体高压腔130处于打开的状态。
径向柱塞液压装置为液压马达状态时,若第一阀体控油腔120输入高压油液,且该高压油液与第一阀体高压腔的油液压强相同,则第一阀芯块160受到的压力大于第二阀芯块170受到的压力,使得第一单向阀芯朝着第二阀芯块170的方向移动以使第二阀芯块170打开阀体高压腔130,阀体高压腔130与阀体低压腔140相连通;若第一阀体控油腔120 输入低压油液,第一阀芯块160受到的压力小于第二阀芯块170受到的压力,使得第一单向阀芯朝着第一阀芯块160的方向移动以使第二阀芯块170关闭阀体高压腔130,阀体高压腔130与阀体低压腔140相断开。
所述第二液控单向阀Ⅵ、Ⅶ、Ⅷ、Ⅸ、Ⅹ个数设为五个,且第二液控单向阀与第一液控单向阀的结构完全相同。
每一第二液控单向阀Ⅵ、Ⅶ、Ⅷ、Ⅸ、Ⅹ均包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二活动腔、第二阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第二单向阀芯活动装接在第二单向阀体内且其可控制第二阀体高压腔与第二阀体低压腔之间的通断,第二阀体高压腔与对应的柱塞腔210相连通,第二阀体低压腔与低压总口222相连通,第二阀体控油腔与高压配流槽和低压配流槽交替接通。
所述第二单向阀芯包括第二阀芯柱和分别固接在第二阀芯柱两端的第三阀芯块和第四阀芯块,所述第二阀芯柱活动套接在第二活动腔内且可带动第三阀芯块与第四阀芯块同步移动,第三阀芯块位于第二阀体控油腔内且第三阀芯块将第二阀体控油腔分隔为两个独立的第二阀体控油分腔,第四阀芯块位于第二阀体高压腔内且其可在打开第二阀体高压腔和关闭第二阀体高压腔之间活动,另设有第二阀芯弹性件,该第二阀芯弹性件夹置在第三阀芯块和第二阀体控油腔腔壁之间。
所述第三阀芯块设有朝向其中一第二阀体控油分腔的第三受压面,所述第四阀芯块设有第四受压面,第三受压面面积大于第四受压面面积。且,所述第二单向阀体还设有第二泄压孔,该第二泄压孔连通另一第二 阀体控油分腔和第一阀体低压腔。
具体的,如图3所示,第二阀体高压腔通过第二高压管710与对应的柱塞腔210相连通,第二阀体低压腔通过第二低压管720与低压端口244相连通,第二阀体控油腔通过第二控油管730与第二控制端口224相连通。
采用液控单向阀配流的径向柱塞液压装置的工作方法,该径向柱塞液压装置为液压马达时,高压总口与压力油源11相连且高压总口为进油口,低压总口与低压油箱12相连且低压总口222为出油口,以其中一个柱塞组件为例:
当其中一个柱塞组件位于上顶位时,对应的第一阀体控油腔120与高压配流槽相接通,对应的第二阀体控油腔与低压配流槽相接通,第一单向阀芯控制第一阀体高压腔130与第一阀体低压腔140相导通,第二单向阀芯控制第二阀体高压腔与第二阀体低压腔相断开,高压油液流经高压总口221、第一阀体高压腔130、第一阀体低压腔140后进入对应的柱塞腔210内,推动柱塞500下行运动,柱塞腔210容积增大,并带动主轴300做正向圆周运动,直至柱塞组件到达下底位。由于该过程中第二单向阀始终处于关闭状态,柱塞腔210内的油液不会通过第二单向阀流出。
当该柱塞组件位于下底位时,主轴300和配流盘400均正向旋转了180度,对应的第一阀体控油腔120与低压配流槽相接通,对应的第二阀体控油腔与高压配流槽相连通,则第一单向阀芯控制第一阀体高压腔130 与第一阀体低压腔140相断开,第二单向阀芯控制第二阀体高压腔102与第二阀体低压腔相导通,在其他柱塞组件的推力以及主轴300惯性力的作用下,该柱塞组件上行运动,柱塞腔210容积减小,柱塞腔210内的油液通过第二阀体高压腔、第二阀体低压腔后从低压总口222流出,实现单个柱塞组件的周期运动;该过程中第一单向阀处于关闭状态,柱塞腔210内的油液不会通过第一单向阀流出。
若干个柱塞组件往复运动使主轴300持续正向旋转,实现将液压能转化为机械能。
也即,液压马达状态下,油液的流向为:压力油源11→高压总口221→第一阀体高压腔130→第一阀体低压腔140→柱塞腔210→第二阀体高压腔→第二阀体低压腔→低压总口222→低压油箱12。
结合图9,进一步说明该液压马达的工作原理:
其中,ABCDE代表五个第一控制端口223,依次控制五个第一液控单向阀Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ的通断;abcde代表五个第二控制端口224,依次控制五个第二液控单向阀Ⅵ、Ⅶ、Ⅷ、Ⅸ、Ⅹ的通断。
具体的,第一控制端口A与第一液控单向阀Ⅰ的第一阀体控油腔120相连通,第二控制端口a与第二液控单向阀Ⅹ的第一阀体控油腔120相连通,且第一液控单向阀Ⅰ和第二液控单向阀Ⅹ对应同一个柱塞腔210。依次类推,第一控制端口E与第一液控单向阀Ⅴ的第一阀体控油腔相连通,第二控制端口e与第二液控单向阀Ⅵ的第一阀体控油腔相连通。
此时,以第一控制端口B和第二控制端口b为例,第一控制端口B 位于第一高压配流槽430内,第二控制端口b位于第二低压配流槽460内,则第一液控单向阀Ⅱ的第一阀体高压腔与第一阀体低压腔相导通,第一液控单向阀Ⅱ打开,第二液控单向阀Ⅶ的第二阀体高压腔与第二阀体低压腔相断开,第二液控单向阀Ⅶ关闭,则,高压油箱11内的高压油液通过高压总口221进入高压端口243,接着从高压端口243流经第一阀体高压腔、第一阀体低压腔进入对应的柱塞腔210内,带动柱塞500和连杆滑靴510向下移动,进而带动偏心轮520转动,最终带动主轴300转动。
以第一控制端口E和第二控制端口e为例,第一控制端口E位于第一低压配流槽450内,第二控制端口e位于第二高压配流槽440内,则第一液控单向阀Ⅴ的第一阀体高压腔与第一阀体低压腔相断开,第一液控单向阀Ⅴ关闭,第二液控单向阀Ⅵ的第二阀体高压腔与第二阀体低压腔相导通,第二液控单向阀Ⅵ打开,此时柱塞腔210内的柱塞500向上移动,以推动柱塞腔210内的高压油液通过第二阀体高压腔、第二阀体低压腔进入低压端口244处,并流经配流盘400与配流腔220之间的间隙404最后从低压总口222流出至低压油箱12内。若在此基础上配流盘转动180度,则第一控制端口E位于第一高压配流槽430内,第二控制端口e位于第二低压配流槽460内,此时,可参考上述第一控制端口B和第二控制端口b的状态,实现了第一液控单向阀和第二液控单向阀交替导通以进行配流动作。
采用液控单向阀配流的径向柱塞液压装置的工作方法,该径向柱塞 液压装置为液压泵时,高压总口221与高压油箱或液压负载13相连且高压总口221为出油口,低压总口222与低压油箱14相连且低压总口222为进油口:
主轴300反向转动带动至少一个柱塞组件从上顶位开始下行运动,则对应的柱塞腔210容积增大,产生真空,柱塞腔210内的压力低于低压油箱14,无论第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相连通;无论第一阀体控油腔120与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔130与第一阀体低压腔140相断开,低压油箱14的油液流经低压总口222、第二阀体低压腔、第二阀体高压腔进入该柱塞腔210内,直至柱塞组件移动至下底位,此时主轴300带动配流盘400反向旋转了180度;
主轴300继续反向转动180度,该柱塞组件开始上行运动,对应的柱塞腔210容积减小,压力增大,其压力高于高压油箱或液压负载13处的压力,此时无论第一阀体控油腔120与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔130与第一阀体低压腔140相连通;无论第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相断开,柱塞腔210内的油液流经第一阀体低压腔140、第一阀体高压腔130后进入高压油箱或液压负载13处,实现该柱塞组件的排油运动;
若干个柱塞组件在主轴300的反向转动带动下,各个柱塞腔210吸 入低压油液,并形成压力油排出,实现机械能转换为液压能。
也即,液压泵状态下,油液的流向与液压马达状态下的油液流向相反,为:低压油箱14→低压总口222→第二阀体低压腔→第二阀体高压腔→柱塞腔210→第一阀体低压腔140→第一阀体高压腔130→高压总口221→液压负载13。
如图10所示,该液压泵的工作过程与液压马达的工作过程呈相反的状态。且,液压泵状态下,第一液控单向阀与第二液控单向阀的打开或关闭仅通过柱塞腔210的压力大小决定,第一阀体控油腔和第二阀体控油腔并不起作用,此时,第一液控单向阀与第二液控单向阀与普通的单向阀作用相同。
请查阅图11至图21-2,采用液控单向阀配流径向柱塞液压装置的第二实施例,所述的径向柱塞液压装置,它包括壳体1000、五个柱塞组件、一个主轴2000、一个转轴3000、五个第一液控单向阀以及五个第二液控单向阀。
所述壳体1000设有五个柱塞腔1100、一个转轴腔1200、一个高压油路和一个低压油路。
本实施例中,如图11所示,所述壳体1000包括壳本体1300和汇流盘1400,所述柱塞腔1100设置在壳本体1300的外周,所述汇流盘1400固接在壳本体1300的后端,所述转轴腔1200设置在汇流盘1400且前后贯穿汇流盘1400。
本实施例中,如图15和图16所示,所述壳本体1300设有第一高压 油路段1310和第一低压油路段1320,所述汇流盘1400设有与第一高压油路段1310相连通的第二高压油路段和与第一低压油路段1320相连通的第二低压油路段,第一高压油路段1310与第二高压油路段形成所述的高压油路,第一低压油路段1320与第二低压油路段形成所述的低压油路。如图23-2所示,第一高压油路段1310和第一低压油路段1320均延伸至壳本体1300的侧面。
本实施例中,如图17-2所示,所述汇流盘1400外周设有汇流盘高压环槽1410和汇流盘低压环槽1420,所述汇流盘高压环槽1410底壁设有始终与转轴之控制油槽相连通的液阻安装孔1430,所述汇流盘低压环槽1420底壁设有始终与转轴之泄压油槽相连通的低压流孔1440;且,所述汇流盘高压环槽1410与液阻安装孔1430形成所述的第二高压油路段,所述汇流盘低压环槽1420与低压流孔1440形成所述的第二低压油路段。
如图11所示,所述壳本体1300每一条边上均设置有柱塞压盖1330,柱塞压盖1330与壳本体1300的每一条边上围成一个柱塞腔1100。
本实施例中,第一液控单向阀和第二液控单向阀的结构与第一实施例的第一液控单向阀和第二液控单向阀的结构基本相同。如图21-1至图21-2所示,每一第一液控单向阀均包括第一单向阀体4100和第一单向阀芯4200,所述第一单向阀体4100设有第一阀体控油腔4110、第一阀体高压腔4120和第一阀体低压腔4130,所述第一单向阀芯4200活动装接在第一单向阀体4100内且其可控制第一阀体高压腔4120与第一阀体低压腔4130之间的通断,第一阀体低压腔4130与对应的柱塞腔1100相连 通,第一阀体高压腔4120与高压油路相连通,第一阀体控油腔4110与第一配流上半环槽3400、第一配流下半环槽3500交替接通。
本实施例中,所述第一单向阀体4100设有第一活动腔4140,所述第一单向阀芯4200包括第一阀芯柱4210和分别固接在第一阀芯柱4210两端的第一阀芯块4220和第二阀芯块4230,所述第一阀芯柱4210活动套接在第一活动腔4140内且可带动第一阀芯块4220与第二阀芯块4230同步移动,第一阀芯块4220位于第一阀体控油腔4110内且第一阀芯块4220将第一阀体控油腔4110分隔为两个独立的第一阀体控油分腔4111、4112,第二阀芯块4230位于第一阀体高压腔4120内且其可在打开第一阀体高压腔4120和关闭第一阀体高压腔4120之间活动,另设有第一阀芯弹性件4300,该第一阀芯弹性件4300夹置在第一阀芯块4220和第一阀体控油腔4110腔壁之间。
如图14所示,每一第二液控单向阀均包括第二单向阀体5100和第二单向阀芯5200,所述第二单向阀体5100设有第二阀体控油腔、第二阀体高压腔和第二阀体低压腔,所述第二单向阀芯5200活动装接在第二单向阀体5100内且其可控制第二阀体高压腔与第二阀体低压腔之间的通断,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与低压油路相连通,第二阀体控油腔与第二配流上半环槽3600、第二配流下半环槽3700交替接通。
本实施例中,所述第二单向阀体设有第二活动腔,所述第二单向阀芯包括第二阀芯柱和分别固接在第二阀芯柱两端的第三阀芯块和第四阀 芯块,所述第二阀芯柱活动套接在第二活动腔内且可带动第三阀芯块与第四阀芯块同步移动,第三阀芯块位于第二阀体控油腔内且第三阀芯块将第二阀体控油腔分隔为两个独立的第二阀体控油分腔,第四阀芯块位于第二阀体高压腔内且其可在打开第二阀体高压腔和关闭第二阀体高压腔之间活动,另设有第二阀芯弹性件,该第二阀芯弹性件夹置在第三阀芯块和第二阀体控油腔腔壁之间。本实施例中,第二单向阀与第一单向阀结构完全相同。
本实施例中,如图13所示,所述壳本体1300设有与第一阀体控油腔4110相连通的第一控油分孔1350、以及用于连通汇流盘高压环槽141与第一阀体高压腔4120的第一高压通孔1360,所述汇流盘1400设有与第一控油分孔1350相连通的第二控油分孔1450,第二控油分孔1450与转轴3000的第一配流环槽相对应;如图14所示,所述壳本体1300还设有与第二阀体控油腔相连通的第三控油分孔1370、以及用于连通汇流盘低压环槽1420与第二阀体低压腔的第一低压通孔1380,所述汇流盘1400还设有与第三控油分孔1370相连通的第四控油通孔1460,第四控油通孔1460与转轴3000的第二配流环槽相对应。
每一柱塞组件可在对应的柱塞腔1100内上下滑动。
本实施例中,每一柱塞组件均包括柱塞1500、柱塞滑靴1510和柱塞回程环1520,所述柱塞1500上下滑动连接在柱塞腔1100内,所述柱塞滑靴1510顶端套接在柱塞1500内,所述柱塞滑靴1510底端抵在双列满圆柱滚子轴承2100外圈,所述柱塞回程环1520套接在柱塞滑靴1510底 端处,柱塞1500在柱塞腔210内上下滑动可通过柱塞滑靴1510和柱塞回程环1520带动主轴2000转动;或者,主轴2000转动可通过柱塞滑靴1510和柱塞回程环1520带动柱塞1500在柱塞腔1100内上下滑动。
所述主轴2000转动装接在壳体1000且传动连接所有的柱塞组件。
本实施例中,所述主轴2000转动装接在壳本体1300且其伸出壳本体1300之前端面。
所述转轴3000转动装接在转轴腔1200内且其固定连接主轴2000,其外周设有控制油槽3200、泄压油槽3300、第一配流环槽和第二配流环槽,所述控制油槽3200与高压油路始终连通,泄压油槽3300与低压油路始终连通,第一配流环槽分隔成第一配流上半环槽3400和第一配流下半环槽3500,第二配流环槽分隔呈第二配流上半环槽3600和第二配流下半环槽3700,控制油槽3200始终与第一配流上半环槽3400和第二配流下半环槽3700相连通,泄压油槽3300始终与第一配流下半环槽3500与第二配流上半环槽3600相连通。
本实施例中,如图20-1至图20-4所示,所述转轴3000设有沿着其轴向方向延伸的两个第一连接油孔3800和两个第二连接油孔3900,其中一个第一连接油孔3800将控制油槽3200与第一配流上半环槽3400进行接通,另一个第一连接油孔3800将控制油槽3200与第二配流下半环槽3700进行接通;其中一个第二连接油孔3900将泄压油槽3300与第一配流下半环槽3500进行接通,另一个第二连接油孔3900将泄压油槽3300与第二配流上半环槽3600进行接通。
该径向柱塞液压装置的工作方法,包括:
该径向柱塞液压装置为液压马达时,高压油路与压力油源相连且高压油路为进油通道,低压油路为出油通道:
当其中一个柱塞组件位于上顶位时,对应的第一阀体控油腔4110与第一配流上半环槽3400相接通,则第一阀体控油腔4110流入高压油液,使得第一单向阀芯4200控制第一阀体高压腔4120与第一阀体低压腔4130相导通;对应的第二阀体控油腔与第二配流上半环槽3600相接通,则第二阀体控油腔流入低压油液,使得第二单向阀芯5200控制第二阀体高压腔与第二阀体低压腔相断开,高压油液流经高压油路、第一阀体高压腔4120、第一阀体低压腔4130后进入对应的柱塞腔1100内,推动柱塞1500下行运动,柱塞腔1100容积增大,并带动主轴2000做正向圆周运动,直至柱塞组件到达下底位。具体的,高压油液的流向为:高压油液从第一高压油路段1310进入汇流盘高压环槽1410后经过第一高压通孔1360进入第一阀体高压腔4120,再从第一阀体低压腔4130进入柱塞腔1100内。
当该柱塞组件位于下底位时,主轴2000和转轴3000均正向旋转180度,对应的第一阀体控油腔4110与第一配流下半环槽3500相接通,则第一阀体控油腔4110流入低压油液,使得第一单向阀芯4200控制第一阀体高压腔4120与第一阀体低压腔4130相断开;对应的第二阀体控油腔与第二配流下半环槽3700相连通,则第二阀体控油腔流入高压油液,使得第二单向阀芯5200控制第二阀体高压腔与第二阀体低压腔相导通; 在其他柱塞组件的推力以及主轴惯性力的作用下,该柱塞组件上行运动,柱塞腔1100容积减小,柱塞腔1100内的油液通过第二阀体高压腔、第二阀体低压腔后从低压油路流出,实现单个柱塞组件的周期运动;具体的,柱塞腔1100内的油液走向为:柱塞腔1100内的油液通过第二阀体高压腔、第二阀体低压腔、第一低压通孔1380后从汇流盘低压环槽1420流经第一低压油路段后流出。
若干个柱塞组件往复运动使主轴2000持续正向旋转,实现将液压能转化为机械能。
而当该径向柱塞液压装置为液压泵时:高压油路与高压油箱或液压负载相连且高压油路为出油通道,低压油路与低压油箱相连且低压油路为进油通道;
主轴2000反向转动带动至少一个柱塞组件从上顶位开始下行运动,则对应的柱塞腔1100容积增大,产生真空,柱塞腔1100内的压力低于低压油箱,此时,第二阀体控油腔与第二配流上半环槽3600相接通,第二单向阀芯5200控制第二阀体高压腔与第二阀体低压腔相连通;第一阀体控油腔4110与第一配流上半环槽3400相接通,第一单向阀芯4200控制第一阀体高压腔4120与第一阀体低压腔4130相断开,低压油箱的油液依次流经第一低压油路段1320、汇流盘低压环槽1420、第一低压通孔1380、第二阀体低压腔、第二阀体高压腔进入该柱塞腔1100内,直至柱塞组件移动至下底位,此时主轴2000带动转轴3000反向旋转了180度;
主轴2000继续反向转动180度,该柱塞组件开始上行运动,对应的 柱塞腔1100容积减小,压力增大,其压力高于高压油箱或液压负载处的压力,此时,第一阀体控油腔4110与第一配流下半环槽3500相接通,第一单向阀芯4200控制第一阀体高压腔4120与第一阀体低压腔4130相连通;第二阀体控油腔与第二配流下半环槽3700相接通,第二单向阀芯5200控制第二阀体高压腔与第二阀体低压腔相断开,柱塞腔1100内的油液依次流经第一阀体低压腔4130、第一阀体高压腔4120、第一高压通孔1360、汇流盘高压环槽1410后进入高压油箱或液压负载处,实现该柱塞组件的排油运动;
若干个柱塞组件在主轴2000的反向转动带动下,各个柱塞腔1100吸入低压油液,并形成压力油排出,实现机械能转换为液压能。
请查阅图22至图26-3,为径向柱塞液压装置的第三实施例,所述径向柱塞液压装置,它包括壳体6000、五个柱塞组件、一个主轴7000、一个汇流盘8000、一个配流盘9000、第一液控单向阀、以及五个第二液控单向阀。
所述主轴7000转动装接在壳体6000且传动连接所有的柱塞组件,每一柱塞组件可在对应的柱塞腔6100内上下滑动。
本实施例中,所述主轴7000包括主轴体7100和转轴7200,且所述柱塞组件与主轴体7100相传动连接。所述汇流盘8000之中心设有转轴孔8100,所述转轴7200穿过转轴孔8100且其两端分别与主轴体7100和配流盘9000相连接。
如图22所示,所述柱塞组件包括柱塞7300、柱塞滑靴7400和柱塞 回程环7500。
所述汇流盘8000外周设有分别与高压油路6140、低压油路6150相连通的第一环槽8200和第二环槽8300,且其端面还设有配流腔8400。
本实施例中,如图25-1所示,所述汇流盘8000设有汇流盘凸台8500,所述配流腔8400设置在汇流盘凸台8500处,所述配流盘9000与汇流盘凸台8500端面相齐平
本实施例中,如图25-2所示,所述配流腔8400底壁设有五干个环形间隔布置且与第一阀体控油腔相连通的第一汇流孔8441和五个环形间隔布置且与第二阀体控油腔相连通的第二汇流孔8442,第一汇流孔8441与第二汇流孔8442同心布置且第一汇流孔8441位于第二汇流孔8442内圈。且,如图25-4和图25-5所示,所述第一汇流孔8441和第二汇流孔8442均延伸至汇流盘8000的外周面。
如图23和图24所示,所述壳体6000还设有与第一阀体控油腔相连通的第一控制油孔6220以及与第二阀体控油腔相连通的第二控制油孔6230,第一控制油孔6220与第一汇流孔8441相连通,第二控制油孔6230与第二汇流孔8442相连通。由此,将配流盘9000对第一阀体控油腔和第二阀体控油腔的配流转化为对配流腔8400底壁的第一汇流孔8441和第二汇流孔8442的配流。
所述配流盘9000转动装接在配流腔8400内且其传动连接主轴7000,其设有可与高压油路相连通的高压配流槽和可与低压油路相连通的低压配流槽。
本实施例中,所述配流盘9000背面靠抵在配流腔8400底壁且所述高压配流槽和低压配流槽均位于配流盘9000背面,第一汇流孔8441与第二汇流孔8442可分别与高压配流槽、低压配流槽交替接通。
本实施例中,如图26-1所示,所述高压配流槽设有两个,且均呈圆弧形,两个高压配流槽分别为高压内配流槽9100和高压外配流槽9200,低压配流槽设有两个,且均呈圆弧形,两个低压配流槽分别为低压内配流槽9300和低压外配流槽9400,其中,高压内配流槽9100与低压内配流槽9300位于同一圆周上且对称布置,高压外配流槽9200与低压外配流槽9400位于同一圆周上且对称布置;所述第一汇流孔8441与高压内配流槽9100所处的圆周相对应;所述第二汇流孔8442与高压外配流槽9200所处的圆周相对应。
本实施例中,如图26-3所示,所述配流盘9000正面设有一个偏心凹槽9110和两个分别与两个高压配流槽相连通的高压分流孔9120,两个高压分流孔9120位于偏心凹槽9110内。所述配流盘9000侧面设有两个分别与两个低压配流槽相连通的低压分流孔9130。本实施例中,该径向柱塞液压装置还包括耐磨垫片9400,如图23所示,该耐磨垫片9400夹置在配流盘9000与配流腔8400底壁之间。
每一第一液控单向阀均包括第一单向阀体9500和第一单向阀芯,所述第一单向阀体9500设有第一阀体控油腔9510、第一阀体高压腔9520和第一阀体低压腔9530,第一阀体控油腔9510与高压配流槽、低压配流槽交替接通。也即,配流盘9000转动可使得第一汇流孔8441与高压内 配流槽9100、低压内配流槽9300进行交替接通。
每一第二液控单向阀均包括第二单向阀体9600和第二单向阀芯,所述第二单向阀体9600设有第二阀体控油腔9610、第二阀体高压腔9620和第二阀体低压腔9630,所述第二单向阀芯活动装接在第二单向阀体9600内且其可控制第二阀体高压腔9620与第二阀体低压腔9630之间的通断,第二阀体高压腔9620与对应的柱塞腔相连通,第二阀体低压腔9630与第二环槽8300相连通,第二阀体控油腔9610与高压配流槽、低压配流槽交替接通。也即,配流盘9000转动可使得第二汇流孔8442与高压外配流槽9200、低压外配流槽9400进行交替接通。第二单向阀的具体结构与第一单向阀的具体结构完全相同。
径向柱塞液压装置的工作方法,为:
该径向柱塞液压装置为液压马达时,高压油路6140与压力油源相连且高压油路为进油通道,低压油路6150为出油通道:
当其中一个柱塞组件位于上顶位时,对应的第一阀体控油腔9510与高压配流槽相接通,也即,第一汇流孔8441与高压内配流槽9100相连通,则第一单向阀芯控制第一阀体高压腔9520与第一阀体低压腔9530相导通;对应的第二阀体控油腔9610与低压配流槽相接通,也即,第二汇流孔8442与低压外配流槽9400相连通,则第二单向阀芯控制第二阀体高压腔9520与第二阀体低压腔9530相断开,高压油液流经高压油路6140、第一环槽8200、第一阀体高压腔9520、第一阀体低压腔9530后进入对应的柱塞腔6100内,推动柱塞7300下行运动,柱塞腔6100容积 增大,并带动主轴7000做正向圆周运动,直至柱塞组件到达下底位;
当该柱塞组件位于下底位时,主轴正向旋转180度,对应的第一阀体控油腔9510与低压配流槽相接通,也即,第一汇流孔8411与低压内配流槽9300相连通,则第一单向阀芯控制第一阀体高压腔9520与第一阀体低压腔9530相断开;对应的第二阀体控油腔9610与高压配流槽相连通,也即,第二汇流孔8442与高压外配流槽9200相连通,则第二单向阀芯控制第二阀体高压腔9620与第二阀体低压腔9630相导通,在其他柱塞组件的推力以及主轴7000惯性力的作用下,该柱塞组件上行运动,柱塞腔6100容积减小,柱塞腔6100内的油液通过第二阀体高压腔9620、第二阀体低压腔9630、第二环槽8300后从低压油路6150流出,实现单个柱塞组件的周期运动;
若干个柱塞组件往复运动使主轴7000持续正向旋转,实现将液压能转化为机械能。
该径向柱塞液压装置为液压泵时,高压油路6140与高压油箱或液压负载相连且高压油路为出油通道,低压油路6150与低压油箱相连且低压油路为进油通道;
主轴7000反向转动带动至少一个柱塞组件从上顶位开始下行运动,则对应的柱塞腔6100容积增大,产生真空,柱塞腔6100内的压力低于低压油箱,此时,第二阀体控油腔9610与高压外配流槽9200相接通,第二单向阀芯控制第二阀体高压腔9620与第二阀体低压腔9630相连通;第一阀体控油腔9510与低压内配流槽9300相接通,第一单向阀芯控制 第一阀体高压腔9520与第一阀体低压腔9530相断开,低压油箱的油液流经低压油路6150、第二环槽8300、第二阀体低压腔9630、第二阀体高压腔9620进入该柱塞腔6100内,直至柱塞组件移动至下底位,此时主轴7000带动转轴反向旋转了180度;
主轴7000继续反向转动180度,该柱塞组件开始上行运动,对应的柱塞腔6100容积减小,压力增大,其压力高于高压油箱或液压负载处的压力,此时,第一阀体控油腔9510与高压内配流槽9100相接通,第一单向阀芯控制第一阀体高压腔9520与第一阀体低压腔9530相连通;第二阀体控油腔9610与低压外配流槽9400相接通,第二单向阀芯控制第二阀体高压腔9620与第二阀体低压腔9630相断开,柱塞腔6100内的油液流经第一阀体低压腔9530、第一阀体高压腔9520、第一环槽8200后进入高压油箱或液压负载处,实现该柱塞组件的排油运动;若干个柱塞组件在主轴7000的反向转动带动下,各个柱塞腔6100吸入低压油液,并形成压力油排出,实现机械能转换为液压能。
以上所述,仅为本发明较佳实施例而已,故不能依此限定本发明实施的范围,即依本发明专利范围及说明书内容所作的等效变化与修饰,皆应仍属本发明涵盖的范围内。
本发明公开了采用液控单向阀配流的径向柱塞液压装置及工作方法,径向柱塞液压装置包括壳体、若干个柱塞组件、一个主轴、与柱塞组件个数相同且一一对应的第一液控单向阀、与柱塞组件个数相同且一一对应的第二液控单向阀和一个配流盘。该径向柱塞液压装置采用液控单向阀配流,提供了一种全新的配流方式,得益于液控单向阀极佳的密 封性,液压马达可工作在高压下,且可达到较高的容积效率。该装置不仅可以作为液压马达使用,也可作为液压泵使用,能够用于需要实现功率回收功能的液压系统中,具有工业实用性。
Claims (14)
- 采用液控单向阀配流的径向柱塞液压装置,其特征在于:它包括壳体、若干个柱塞组件、一个主轴、与柱塞组件个数相同且一一对应的第一液控单向阀、与柱塞组件个数相同且一一对应的第二液控单向阀和一个配流盘;所述壳体内设有若干个柱塞腔和一个配流腔,所述配流腔设有高压总口和低压总口;每一柱塞组件可在对应的柱塞腔内上下滑动;所述主轴转动装接在壳体且传动连接所有的柱塞组件;所述配流盘转动装接在配流腔内且其固定连接主轴,其设有始终与高压总口相连通的高压配流槽和始终与低压总口相连通的低压配流槽;每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体设有第一活动腔、第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与高压总口相连通,第一阀体控油腔与高压配流槽和低压配流槽交替接通;每一第二液控单向阀均包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二活动腔、第二阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第二单向阀芯活动装接在第二单向阀体内且其可控制第二阀体高压腔与第二阀体低压腔之间的通断,第二阀体高压腔与对应 的柱塞腔相连通,第二阀体低压腔与低压总口相连通,第二阀体控油腔与高压配流槽和低压配流槽交替接通。
- 根据权利要求1所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述高压配流槽设有两个,且均呈圆弧形,两个高压配流槽分别为第一高压配流槽和第二高压配流槽,低压配流槽设有两个,且均呈圆弧形,两个低压配流槽分别为第一低压配流槽和第二低压配流槽,其中,第一高压配流槽与第一低压配流槽位于同一圆周上且对称布置,第二高压配流槽与第二低压配流槽位于同一圆周上且对称布置;所述配流腔底壁设有与第一阀体控油腔相连通的第一控制端口,该第一控制端口与第一高压配流槽所处的圆周相对应;所述配流腔底壁设有与第二阀体控油腔相连通的第二控制端口,该第二控制端口与第二高压配流槽所处的圆周相对应。
- 根据权利要求2所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述配流盘正面设有始终与高压总口相连通的若干个高压分流孔,所述配流盘侧面设有始终与低压总口相连通的若干个低压分流孔,两个高压配流槽和两个低压配流槽均位于配流盘背面,且两个高压配流槽与高压分流孔始终连通,两个低压配流槽与低压分流孔始终连通。
- 根据权利要求1所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述第一单向阀芯包括第一阀芯柱和分别固接在第一阀芯柱两端的第一阀芯块和第二阀芯块,所述第一阀芯柱活动套接在第一活动腔内且可带动第一阀芯块与第二阀芯块同步移动,第一阀芯块位于第 一阀体控油腔内且第一阀芯块将第一阀体控油腔分隔为两个独立的第一阀体控油分腔,第二阀芯块位于第一阀体高压腔内且其可在打开第一阀体高压腔和关闭第一阀体高压腔之间活动,另设有第一阀芯弹性件,该第一阀芯弹性件夹置在第一阀芯块和第一阀体控油腔腔壁之间;所述第二单向阀芯包括第二阀芯柱和分别固接在第二阀芯柱两端的第三阀芯块和第四阀芯块,所述第二阀芯柱活动套接在第二活动腔内且可带动第三阀芯块与第四阀芯块同步移动,第三阀芯块位于第二阀体控油腔内且第三阀芯块将第二阀体控油腔分隔为两个独立的第二阀体控油分腔,第四阀芯块位于第二阀体高压腔内且其可在打开第二阀体高压腔和关闭第二阀体高压腔之间活动,另设有第二阀芯弹性件,该第二阀芯弹性件夹置在第三阀芯块和第二阀体控油腔腔壁之间。
- 根据权利要求4所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述第一阀芯块设有朝向其中一第一阀体控油分腔的第一受压面,所述第二阀芯块设有第二受压面,第一受压面面积大于第二受压面面积;所述第三阀芯块设有朝向其中一第二阀体控油分腔的第三受压面,所述第四阀芯块设有第四受压面,第三受压面面积大于第四受压面面积;所述第一单向阀体还设有第一泄压孔,该第一泄压孔连通另一第一阀体控油分腔和第一阀体低压腔;所述第二单向阀体还设有第二泄压孔,该第二泄压孔连通另一第二阀体控油分腔和第一阀体低压腔。
- 采用液控单向阀配流的径向柱塞液压装置的工作方法,其应用权利要求1至5中任意一项所述的采用液控单向阀配流的径向柱塞液压装 置,其特征在于:包括:该径向柱塞液压装置为液压马达时,高压总口与压力油源相连且高压总口为进油口,低压总口为出油口:当其中一个柱塞组件位于上顶位时,对应的第一阀体控油腔与高压配流槽相接通,对应的第二阀体控油腔与低压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相导通,第二单向阀芯控制第二阀体高压腔与第二阀体低压腔相断开,高压油液流经高压总口、第一阀体高压腔、第一阀体低压腔后进入对应的柱塞腔内,推动柱塞下行运动,柱塞腔容积增大,并带动主轴做正向圆周运动,直至柱塞组件到达下底位;当该柱塞组件位于下底位时,主轴和配流盘均正向旋转180度,对应的第一阀体控油腔与低压配流槽相接通,对应的第二阀体控油腔与高压配流槽相连通,则第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相断开,第二单向阀芯控制第二阀体高压腔与第二阀体低压腔相导通,在其他柱塞组件的推力以及主轴惯性力的作用下,该柱塞组件上行运动,柱塞腔容积减小,柱塞腔内的油液通过第二阀体高压腔、第二阀体低压腔后从低压总口流出,实现单个柱塞组件的周期运动;若干个柱塞组件往复运动使主轴持续正向旋转,实现将液压能转化为机械能;该径向柱塞液压装置为液压泵时,高压总口与高压油箱或液压负载相连且高压总口为出油口,低压总口与低压油箱相连且低压总口为进油口:主轴反向转动带动至少一个柱塞组件从上顶位开始下行运动,则对应的柱塞腔容积增大,产生真空,柱塞腔内的压力低于低压油箱,无论第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相连通;无论第一阀体控油腔与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相断开,低压油箱的油液流经低压总口、第二阀体低压腔、第二阀体高压腔进入该柱塞腔内,直至柱塞组件移动至下底位,此时主轴带动配流盘反向旋转了180度;主轴继续反向转动180度,该柱塞组件开始上行运动,对应的柱塞腔容积减小,压力增大,其压力高于高压油箱或液压负载处的压力,此时无论第一阀体控油腔与低压配流槽或高压配流槽相接通,第一单向阀芯控制第一阀体高压腔与第一阀体低压腔相连通;无论第二阀体控油腔与低压配流槽或高压配流槽相接通,第二单向阀芯均控制第二阀体高压腔与第二阀体低压腔相断开,柱塞腔内的油液流经第一阀体低压腔、第一阀体高压腔后进入高压油箱或液压负载处,实现该柱塞组件的排油运动;若干个柱塞组件在主轴的反向转动带动下,各个柱塞腔吸入低压油液,并形成压力油排出,实现机械能转换为液压能。
- 采用液控单向阀配流的径向柱塞液压装置,其特征在于:它包括壳体、若干个柱塞组件、一个主轴、一个转轴、与柱塞组件个数相同且一一对应的第一液控单向阀和第二液控单向阀;所述壳体设有若干个柱塞腔、一个转轴腔、一个高压油路和一个低 压油路;每一柱塞组件可在对应的柱塞腔内上下滑动;所述主轴转动装接在壳体且传动连接所有的柱塞组件;所述转轴转动装接在转轴腔内且其固定连接主轴,其外周设有控制油槽、泄压油槽、第一配流环槽和第二配流环槽,所述控制油槽与高压油路始终连通,泄压油槽与低压油路始终连通,第一配流环槽分隔成第一配流上半环槽和第一配流下半环槽,第二配流环槽分隔呈第二配流上半环槽和第二配流下半环槽,控制油槽始终与第一配流上半环槽和第二配流下半环槽相连通,泄压油槽始终与第一配流下半环槽与第二配流上半环槽相连通;每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体设有第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与高压油路相连通,第一阀体控油腔与第一配流上半环槽、第一配流下半环槽交替接通;所述第二液控单向阀结构与第一液控单向阀结构相同且其包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二阀体控油腔、第二阀体高压腔和第二阀体低压腔,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与低压油路相连通,第二阀体控油腔与第二配流上半环槽、第二配流下半环槽交替接通。
- 根据权利要求7所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述转轴设有沿着其轴向方向延伸的两个第一连接油孔和两个第二连接油孔,其中一个第一连接油孔将控制油槽与第一配流上半环槽进行接通,另一个第一连接油孔将控制油槽与第二配流下半环槽进行接通;其中一个第二连接油孔将泄压油槽与第一配流下半环槽进行接通,另一个第二连接油孔将泄压油槽与第二配流上半环槽进行接通。
- 根据权利要求8所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述壳体包括壳本体和汇流盘,所述主轴转动装接在壳本体且其伸出壳本体之前端面,所述柱塞腔设置在壳本体的外周,所述汇流盘固接在壳本体的后端,所述转轴腔设置在汇流盘且前后贯穿汇流盘;所述壳本体设有第一高压油路段和第一低压油路段,所述汇流盘设有与第一高压油路段相连通的第二高压油路段和与第一低压油路段相连通的第二低压油路段,第一高压油路段与第二高压油路段形成所述的高压油路,第一低压油路段与第二低压油路段形成所述的低压油路。
- 根据权利要求9所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述汇流盘外周设有汇流盘高压环槽和汇流盘低压环槽,所述汇流盘高压环槽底壁设有始终与控制油槽相连通的液阻安装孔,所述汇流盘低压环槽底壁设有始终与泄压油槽相连通的低压流孔,所述汇流盘高压环槽与液阻安装孔形成所述的第二高压油路段,所述汇流盘低压环槽与低压流孔形成所述的第二低压油路段;所述壳本体设有与第一阀体控油腔相连通的第一控油分孔、以及用于连通汇流盘高压环槽与 第一阀体高压腔的第一高压通孔,所述汇流盘设有与第一控油分孔相连通的第二控油分孔,第二控油分孔与第一配流环槽相对应;所述壳本体还设有与第二阀体控油腔相连通的第三控油分孔、以及用于连通汇流盘低压环槽与第二阀体低压腔的第一低压通孔,所述汇流盘还设有与第三控油分孔相连通的第四控油通孔,第四控油通孔与第二配流环槽相对应。
- 采用液控单向阀配流的径向柱塞液压装置,其特征在于:它包括壳体、若干个柱塞组件、一个主轴、一个汇流盘、一个配流盘、与柱塞组件个数相同且一一对应的第一液控单向阀和第二液控单向阀;所述壳体设有若干个柱塞腔、若干个第一阀腔、若干个第二阀腔、一个装配腔、一个高压油路和一个低压油路;每一柱塞组件可在对应的柱塞腔内上下滑动;所述主轴转动装接在壳体且传动连接所有的柱塞组件;所述汇流盘固接在装配腔内,其外周设有分别与高压油路、低压油路相连通的第一环槽和第二环槽,且其端面还设有配流腔;所述配流盘转动装接在配流腔内且其传动连接主轴,其设有可与高压油路相连通的高压配流槽和可与低压油路相连通的低压配流槽;每一第一液控单向阀均包括第一单向阀体和第一单向阀芯,所述第一单向阀体安装在第一阀腔内且其设有第一阀体控油腔、第一阀体高压腔和第一阀体低压腔,所述第一单向阀芯活动装接在第一单向阀体内且其可控制第一阀体高压腔与第一阀体低压腔之间的通断,第一阀体低压腔与对应的柱塞腔相连通,第一阀体高压腔与第一环槽相连通,第一阀 体控油腔与高压配流槽、低压配流槽交替接通;所述第二液控单向阀结构与第一液控单向阀结构相同且其包括第二单向阀体和第二单向阀芯,所述第二单向阀体设有第二阀体控油腔、第二阀体高压腔和第二阀体低压腔,第二阀体高压腔与对应的柱塞腔相连通,第二阀体低压腔与第二环槽相连通,第二阀体控油腔与高压配流槽、低压配流槽交替接通。
- 根据权利要求11所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述配流腔底壁设有若干个环形间隔布置且与第一阀体控油腔相连通的第一汇流孔和若干个环形间隔布置且与第二阀体控油腔相连通的第二汇流孔,第一汇流孔与第二汇流孔同心布置且第一汇流孔位于第二汇流孔内圈;所述配流盘背面靠抵在配流腔底壁且所述高压配流槽和低压配流槽均位于配流盘背面,第一汇流孔与第二汇流孔可分别与高压配流槽、低压配流槽交替接通。
- 根据权利要求12所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述高压配流槽设有两个,且均呈圆弧形,两个高压配流槽分别为高压内配流槽和高压外配流槽,低压配流槽设有两个,且均呈圆弧形,两个低压配流槽分别为低压内配流槽和低压外配流槽,其中,高压内配流槽与低压内配流槽位于同一圆周上且对称布置,高压外配流槽与低压外配流槽位于同一圆周上且对称布置;所述第一汇流孔与高压内配流槽所处的圆周相对应;所述第二汇流孔与高压外配流槽所处的圆周相对应;所述配流盘正面设有两个分别与两个高压配流槽相连通 的高压分流孔,所述配流盘侧面设有两个分别与两个低压配流槽相连通的低压分流孔;所述壳体端面还设有与两个高压分流孔相连通的第一控制高压口,所述汇流盘外周面还设有与两个低压分流孔相连通的第二控制低压口。
- 根据权利要求13所述的采用液控单向阀配流的径向柱塞液压装置,其特征在于:所述第一汇流孔和第二汇流孔均延伸至汇流盘的外周面;所述壳体还设有与第一阀体控油腔相连通的第一控制油孔以及与第二阀体控油腔相连通的第二控制油孔,第一控制油孔与第一汇流孔相连通,第二控制油孔与第二汇流孔相连通。
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