CN114060341B - Regeneration valve, multi-way valve, hydraulic system and engineering machinery - Google Patents
Regeneration valve, multi-way valve, hydraulic system and engineering machinery Download PDFInfo
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- CN114060341B CN114060341B CN202111457130.4A CN202111457130A CN114060341B CN 114060341 B CN114060341 B CN 114060341B CN 202111457130 A CN202111457130 A CN 202111457130A CN 114060341 B CN114060341 B CN 114060341B
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- 230000008929 regeneration Effects 0.000 title claims abstract description 133
- 238000011069 regeneration method Methods 0.000 title claims abstract description 133
- 239000012530 fluid Substances 0.000 claims abstract description 98
- 238000004891 communication Methods 0.000 claims description 21
- 238000010276 construction Methods 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 11
- 239000011148 porous material Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a regeneration valve, a multi-way valve, a hydraulic system and engineering machinery, wherein the regeneration valve comprises: regenerating the valve body; the load holding valve comprises a first one-way valve, a holding valve inlet communicated with the outlet end of the first one-way valve and arranged on the regeneration valve body, and a holding valve control fluid port for introducing hydraulic fluid for reversely conducting the first one-way valve; the first control valve comprises a first control valve cavity, a first control valve core, a first control valve inlet, a first control valve outlet and a first control valve control fluid inlet which are arranged on the regeneration valve body; the first electromagnetic valve comprises a first electromagnetic valve inlet and a first electromagnetic valve outlet, and the first electromagnetic valve outlet is respectively communicated with the first control valve control fluid inlet and the holding valve control fluid inlet; the first check valve chamber extends from a first surface of the regeneration valve body toward the inside, the first control valve chamber extends from a second surface of the regeneration valve body toward the inside, and the first surface intersects the second surface.
Description
Technical Field
The invention relates to the field of engineering equipment, in particular to a regeneration valve, a multi-way valve, a hydraulic system and engineering machinery.
Background
The hydraulic excavator is an engineering machine with wide application, and mainly comprises a get-off device, a turning device and a working device, wherein the working device of the hydraulic excavator comprises a movable arm valve core, a bucket rod valve core, a bucket valve core and a corresponding executing mechanism. Because the hydraulic excavator has to undergo one reciprocating motion in each working cycle, and high pressure and large flow are required when the movable arm and the bucket rod act, the movable arm and the bucket consume most of the energy of the hydraulic excavator, and the sum of the energy consumed by the movable arm and the bucket exceeds 50% of the total output energy of the main pump. The energy when the movable arm falls down and the bucket rod is not utilized by the common hydraulic excavator, so that the energy is dissipated in a heat energy form at the throttle opening of the main valve core, the temperature of the system oil is increased, air pockets are caused, the hydraulic system of the hydraulic excavator is damaged, and the service life of the hydraulic excavator is shortened.
At present, some engineering machinery enterprises at home and abroad have made related researches on the aspects of flow regeneration and energy recovery of a hydraulic excavator, and the hydraulic excavator increases the overflow area of oil by increasing the width of a throttle opening and the diameter of a valve core so as to achieve the purpose of reducing pressure loss and energy consumption; the main valve of the hydraulic excavator realizes the regeneration in the valve or the regeneration in the valve core by additionally arranging a regeneration oil duct in the main valve or the valve core. However, this design increases the difficulty and cost of machining the main valve, and the amount of regeneration is not optimistic and the operating mode is poorly adapted.
In the technical scheme of the prior art, aiming at the problems of flow regeneration and energy recovery of a main valve of an excavator, the prior art generally realizes in-valve regeneration or in-valve regeneration by additionally arranging a regeneration oil duct in the main valve or in the valve core.
The technical scheme in the prior art has the following defects:
1. the main valve is complex in structure and the processing difficulty is increased due to the fact that the regeneration oil duct is additionally arranged in the main valve;
2. The regeneration oil duct is additionally arranged in the main valve, so that the volume of the main valve is increased, the installation space of the main valve is limited, and the manufacturing cost is increased;
3. in the regeneration in the valve core, the rigidity of the valve core can be reduced because the regeneration oil duct is arranged in the valve core;
4. in the regeneration of the valve core, the rigidity of the valve core is reduced, so that the matching precision of the valve core and a valve core hole is affected, and the processing difficulty and the processing cost of the valve core of the movable arm are increased;
5. In the regeneration in the valve and the valve core, the oil passage diameter is set, the regeneration amount is low, the independent control and adjustment cannot be carried out, and the working condition adaptability is poor;
6. Because the regeneration oil duct is arranged on the valve core, the setting of the valve core shoulder is affected, and the through-flow capacity of the valve core is reduced;
7. In the regeneration in the valve and the valve core, the regeneration pressure loss is increased and the regeneration amount is reduced due to the limitation of the space in the regeneration oil duct.
Disclosure of Invention
The present invention aims to provide a regeneration valve, a multi-way valve, a hydraulic system and a construction machine, which are used for solving the problem that the structure of a main control valve for controlling a main hydraulic actuator of the hydraulic system is complex in the related art.
According to an aspect of an embodiment of the present invention, there is provided a regeneration valve including:
Regenerating the valve body;
The load holding valve comprises a first one-way valve, a holding valve inlet communicated with the outlet end of the first one-way valve and arranged on the regeneration valve body, and a holding valve control fluid port for introducing hydraulic fluid for reversely conducting the first one-way valve, wherein the first one-way valve comprises a first one-way valve cavity arranged on the regeneration valve body and a first one-way valve core arranged in the first one-way valve cavity;
The first control valve comprises a first control valve cavity arranged on the regeneration valve body, a first control valve core arranged in the first control valve cavity, a first control valve inlet communicated with the inlet end of the first one-way valve, a first control valve outlet for outputting hydraulic fluid and a first control valve control fluid inlet for introducing the hydraulic fluid which enables the first control valve inlet and the first control valve outlet to be communicated; and
The first electromagnetic valve comprises a first electromagnetic valve inlet and a first electromagnetic valve outlet, and the first electromagnetic valve outlet is respectively communicated with the first control valve control fluid inlet and the holding valve control fluid inlet so that the first check valve is conducted reversely and simultaneously the first control valve inlet and the first control valve outlet are conducted;
the first check valve chamber extends from a first surface of the regeneration valve body toward the inside, the first control valve chamber extends from a second surface of the regeneration valve body toward the inside, and the first surface intersects the second surface.
In some embodiments, the regeneration valve further comprises a first flow passage configured to communicate the inlet end of the first check valve with the inlet of the first control valve, the first flow passage being provided on the regeneration valve body and communicating the first control valve chamber with the first check valve chamber.
In some embodiments, the regeneration valve further comprises a second check valve, an inlet end of the second check valve being in communication with the first control valve outlet, an outlet end of the second check valve being configured to output hydraulic fluid output when the first check valve is in reverse conduction, the second check valve comprising a second check valve chamber extending from the second surface of the regeneration valve body toward the interior, the regeneration valve further comprising a second flow passage communicating the inlet end of the second check valve with the first control valve outlet, the second flow passage being located between the first control valve chamber and the second check valve chamber and communicating the first control valve chamber and the second check valve chamber.
In some embodiments, the second check valve chamber is parallel with the first control valve chamber.
In some embodiments, the load holding valve further comprises a state control valve configured to reverse-conduct the first one-way valve, the state control valve comprising:
A state control valve body provided with a valve cavity and a holding valve control fluid port;
the first pore canal is communicated with the first one-way valve cavity and the valve cavity of the state control valve;
A return port configured to drain hydraulic fluid;
The state control valve core is arranged in the valve cavity of the state control valve and is configured to move under the drive of the hydraulic fluid introduced by the control fluid port of the holding valve so as to lead the return port to be communicated with the first pore passage.
In some embodiments, the status control valve is mounted on the first surface of the regeneration valve body.
In some embodiments, the regeneration valve body is a rectangular plate-like structure, one of the first surface and the second surface being located at one end in a length direction of the regeneration valve body, and the other being located at one end in a width direction of the regeneration valve body.
In some embodiments, the first control valve further comprises a first control valve end cap covering the opening of the first control valve chamber on the second surface, the first solenoid valve is mounted outside the first control valve end cap, and the end cap is provided with a passage communicating the first solenoid valve outlet and the first control valve control fluid inlet.
In some embodiments, the regeneration valve further comprises:
The second control valve comprises a second control valve cavity arranged on a third surface of the regeneration valve body, which is opposite to the second surface, a second control valve core arranged in the second control valve cavity, a second control valve inlet communicated with the inlet end of the first one-way valve, a second control valve outlet for outputting hydraulic fluid and a second control valve control fluid inlet for introducing the hydraulic fluid which enables the second control valve inlet and the second control valve outlet to be communicated; and
The second solenoid valve comprises a second solenoid valve inlet and a second solenoid valve outlet, and the second solenoid valve outlet is respectively communicated with the second control valve control fluid inlet and the holding valve control fluid inlet so that the first check valve is conducted reversely and simultaneously the second control valve inlet and the second control valve outlet are conducted.
In some embodiments, the regeneration valve further comprises a third flow passage configured to communicate the inlet end of the first check valve with the inlet of the second control valve, the third flow passage being provided on the regeneration valve body and communicating the second control valve chamber with the first check valve chamber.
In some embodiments, the regeneration valve further comprises a third check valve, an inlet end of the third check valve being in communication with the second control valve outlet, an outlet end of the third check valve being configured to output hydraulic fluid output when the first check valve is in reverse conduction, the third check valve comprising a third check valve chamber extending from a third surface of the regeneration valve body toward the interior, the regeneration valve further comprising a fourth flow passage communicating the inlet end of the third check valve with the second control valve outlet, the fourth flow passage being located between the second control valve chamber and the first check valve chamber and communicating the second control valve chamber and the first check valve chamber.
In some embodiments of the present invention, in some embodiments,
The second control valve and the first control valve are symmetrically arranged at two sides of the first unidirectional valve cavity.
According to another aspect of the present application there is also provided a multiple valve comprising a regeneration valve as defined above, the regeneration valve being one of the multiple valves.
According to another aspect of the present application, there is also provided a hydraulic system including:
the above-described regeneration valve;
A first hydraulic actuator including an outlet port coupled to the inlet port of the holding valve;
and the second hydraulic actuating mechanism or the energy accumulator is communicated with the outlet of the first control valve.
In some embodiments, the hydraulic system further includes a reversing valve for controlling the first hydraulic actuator, the reversing valve being provided separate from the regeneration valve.
According to another aspect of the present application, there is also provided a construction machine, which in some embodiments comprises the hydraulic system described above.
By applying the technical scheme of the invention, the regeneration valve is independent of the main control valve of the main hydraulic actuator of the hydraulic system, and is beneficial to simplifying the structure of the main control valve relative to the mode of adding a flow path on the main control valve.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 shows a schematic diagram of a regeneration valve according to an embodiment of the present invention;
FIG. 2 shows a schematic structural view of a regeneration valve according to an embodiment of the present invention;
FIG. 3 shows a schematic diagram of a hydraulic system of an embodiment of the present invention; and
Fig. 4 shows a system schematic of a work machine according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the regeneration valve in the present embodiment includes a regeneration valve body 12, a load holding valve 3, a first control valve 4, and a first solenoid valve 1.
Wherein the load holding valve 3 comprises a first check valve 301, a holding valve inlet 303 communicated with an outlet end of the first check valve 301 and provided on the regeneration valve body 12, and a holding valve control fluid port 308 for introducing hydraulic fluid for reverse conducting the first check valve 301, the first check valve 301 comprises a first check valve cavity provided on the regeneration valve body 12 and a first check valve core provided in the first check valve cavity
The first control valve 4 includes a first control valve chamber provided on the regeneration valve body 12, a first control valve spool provided in the first control valve chamber, a first control valve inlet 403 communicating with an inlet end of the first check valve 301, a first control valve outlet 404 for outputting hydraulic fluid, and a first control valve control fluid inlet 402 for introducing hydraulic fluid that communicates the first control valve inlet 403 and the first control valve outlet 404.
The first solenoid valve 1 includes a first solenoid valve inlet 101 and a first solenoid valve outlet 102, the first solenoid valve outlet 102 being in communication with a first control valve control fluid inlet 402 and a holding valve control fluid inlet 308, respectively, to allow the first check valve 301 to be in reverse communication while the first control valve inlet 403 and the first control valve outlet 404 are in communication.
The first check valve chamber extends inward from a first surface of the regeneration valve body 12, and the first control valve chamber extends inward from a second surface of the regeneration valve body 12, the first surface intersecting the second surface.
In this embodiment, the regeneration valve is independent of the main control valve of the hydraulic system controlling the main hydraulic actuator, which is advantageous for simplifying the structure of the main control valve relative to the manner of adding a flow path to the main control valve, and further, since the structure of the regeneration valve of this embodiment is relatively simple, it is advantageous for simplifying the flow path in the valve, thereby reducing the blocking effect of the regeneration valve on the hydraulic fluid and reducing the pressure drop generated by the hydraulic fluid.
The working principle of the regeneration valve of the present embodiment is described by taking a hydraulic actuator as a hydraulic cylinder as an example as follows:
The rodless chamber of the hydraulic cylinder and the holding valve inlet 303. When it is necessary to define the piston rod of the hydraulic cylinder in the fixed position, the first solenoid valve 1 is not energized, and the hydraulic fluid in the rodless chamber of the hydraulic cylinder cannot flow through the outlet end of the first check valve 301 to the inlet end, and therefore, the hydraulic fluid in the rodless chamber of the hydraulic cylinder cannot be discharged, thereby holding the piston rod in the fixed position.
When the piston rod of the hydraulic cylinder is retracted into the cylinder body of the hydraulic cylinder, the first electromagnetic valve 1 can be electrified, the first electromagnetic valve inlet 101 and the first electromagnetic valve outlet 102 are communicated, the hydraulic fluid introduced by the first electromagnetic valve inlet 101 flows to the first control valve control fluid inlet 402 and the holding valve control fluid inlet 308, so that the first check valve 301 is reversely communicated, the first control valve inlet 403 and the first control valve outlet 404 are communicated at the same time, the hydraulic fluid discharged from the rodless cavity of the hydraulic cylinder flows to the inlet end through the outlet end of the first check valve, and then the hydraulic fluid output by the first control valve 4 can be used for providing hydraulic fluid to other hydraulic executing elements or providing hydraulic fluid to an energy accumulator through the first control valve inlet 403 and the first control valve outlet 404.
The first check valve 301 further includes a first check valve spring 302 disposed within the first check valve chamber, the first check valve spring 302 for urging the first check valve element toward a position closing the orifice between the inlet end and the outlet end of the first check valve. When hydraulic fluid is input into the inlet end of the first check valve 301, the hydraulic fluid pushes the first check valve to move so as to conduct from the inlet end to the outlet end of the first check valve 301.
When hydraulic fluid is supplied to the holding valve control fluid inlet 308, the hydraulic fluid may reverse the first check valve 301, i.e., hydraulic fluid may flow from the outlet end to the inlet end of the first check valve 301.
The regeneration valve further comprises a first flow passage 9 configured to communicate the inlet end of the first check valve 301 with the first control valve inlet 403, the first flow passage 9 being provided on the regeneration valve body 12 and communicating the first control valve chamber with the first check valve chamber. The first check valve cavity extends from the first surface of the regeneration valve body 12 to the inside, and the first control valve cavity extends from the second surface of the regeneration valve body 12 to the inside, so that the first flow passage 9 for communicating the first control valve cavity and the first check valve cavity has a simple structure and small blocking effect on hydraulic fluid, and is beneficial to reducing the pressure drop of the regeneration valve on the hydraulic fluid.
In some embodiments, the first flow channel 9 is an arcuate flow channel. In other embodiments, the first flow channel 9 is a linear flow channel.
The regeneration valve further comprises a second check valve 6, the inlet end 601 of the second check valve 6 being in communication with the first control valve outlet 404, the outlet end 602 of the second check valve 6 being configured to output hydraulic fluid output when the first check valve 301 is in reverse conduction, the second check valve 6 comprising a second check valve chamber extending from the second surface of the regeneration valve body 12 towards the inside, the regeneration valve further comprising a second flow passage 8 in communication with the inlet end 601 of the second check valve 6 and the first control valve outlet 404, the second flow passage 8 being located between and in communication with the first control valve chamber and the second check valve chamber.
The outlet end of the second non-return valve 6 is used for supplying hydraulic fluid to other hydraulic actuators or accumulators.
The second flow passage 8 directly connects the first control valve cavity and the second one-way valve cavity, which is beneficial to reducing the blocking effect of the regeneration valve on hydraulic fluid and reducing the pressure drop of the hydraulic fluid in the regeneration valve.
In some embodiments, the second flow channel 8 is a linear flow channel, in other embodiments, the second flow channel 8 is an arcuate flow channel.
The second check valve 6 further comprises a second check valve plug 10 arranged outside the second check valve cavity, the second check valve 6 further comprises a second check valve spring 603 arranged in the second check valve cavity, and the second check valve spring 603 is used for pushing the second check valve plug towards a position closing a pore channel between an inlet end 601 and an outlet end 602 of the second check valve. When the inlet end 601 of the second non-return valve 6 is fed by hydraulic fluid, the hydraulic fluid pushes the second non-return valve to move so as to make the inlet end 601 to the outlet end 602 of the second non-return valve 6 conductive.
In some embodiments, the second check valve chamber is parallel to the first control valve chamber to simplify the configuration of the flow path within the regeneration valve and reduce the pressure drop of the hydraulic fluid as it flows through the regeneration valve.
The load holding valve 3 further includes a state control valve configured to reverse-conduct the first check valve 301, the state control valve including a state control valve body 311, a first orifice 307, and a return port Dr3.
The state control valve body 311 is provided with a valve cavity and a holding valve control fluid port 308; the first orifice 307 communicates with the first check valve chamber and the valve chamber of the state control valve; a return port Dr3 configured to discharge hydraulic fluid;
The state control valve spool 304 is provided in the valve chamber of the state control valve, and is configured to move by the hydraulic fluid introduced from the holding valve control fluid port 308 to communicate the return port Dr3 with the first port 307.
The state control valve body 311 further includes a state control valve spring 309, the state control valve 309 being configured to urge the state control valve spool 304 toward a position closing the first port 307 and the return port Dr 3.
When the first electromagnetic valve 1 is powered on, one path of hydraulic fluid output through the electromagnetic pressure reducing valve outlet 102 enters the holding valve control fluid port 308 of the load holding valve 3, overcomes the elastic force of the state control valve spring 309, pushes the state control valve core 304 to move, cuts off the flow path between the second pore channel 306 and the first pore channel 307 of the load holding valve 3, so that the oil in the spring cavity of the first one-way valve 301 of the load holding valve 3 enters the return port Dr3 through the oil duct III and the first pore channel 307 to unload, and the locking function of the actuating mechanism of the load holding valve 3 is relieved.
A state control valve 311 is installed on the first surface of the regeneration valve body 12, and the state control valve may be in communication with the first check valve 301 installed in the first surface through a flow path, due to the simplified structure, shortened flow path, and reduced pressure drop generated by the hydraulic fluid.
The regeneration valve body 12 has a rectangular plate-like structure, and one of the first surface and the second surface is located at one end in the length direction of the regeneration valve body 12, and the other is located at one end in the width direction of the regeneration valve body 12.
The first control valve 4 further comprises a first control valve end cap 401 covering the opening of the first control valve chamber on the second surface, the first solenoid valve 1 is mounted outside the first control valve end cap 401, and the end cap 401 is provided with a passage communicating the first solenoid valve outlet 102 and the first control valve control fluid inlet 402.
A spring chamber is provided within the first control valve end cap 401, the spring chamber having a first control valve spring 406 provided therein, the first control valve spring 406 being configured to urge the first control valve spool towards a position closing the passage between the first control valve inlet 403 and the first control valve outlet 404, the first control valve control fluid inlet 402 for introducing hydraulic fluid for bringing the first control valve inlet 403 and the first control valve outlet 404 into communication.
The regeneration valve in some embodiments further comprises a second control valve 5 and a second solenoid valve 2.
The second control valve 5 includes a second control valve chamber provided on a third surface of the regeneration valve body 12 facing away from the second surface, a second control valve spool provided in the second control valve chamber, a second control valve inlet 503 communicating with an inlet end of the first check valve 301, a second control valve outlet 504 for outputting hydraulic fluid, and a second control valve control fluid inlet 502 for introducing hydraulic fluid that makes the second control valve inlet 503 and the second control valve outlet 504 conductive; and
The second solenoid valve 2 includes a second solenoid valve inlet 201 and a second solenoid valve outlet 202, the second solenoid valve outlet 202 being in communication with a second control valve control fluid inlet 502 and a holding valve control fluid inlet 308, respectively, to allow the first check valve 301 to be in reverse communication while the second control valve inlet 503 and the second control valve outlet 504 are in communication.
The second control valve 5 further comprises a second control valve end cap 501 covering the opening of the second control valve chamber on the third surface, the second solenoid valve 2 is mounted outside the second control valve end cap 501, and the end cap 501 is provided with a passage communicating the second solenoid valve outlet 202 and the second control valve control fluid inlet 502.
A spring chamber is provided in the second control valve end cap 501, in which a second control valve spring 506 is provided, the second control valve spring 506 being configured to urge the second control valve spool towards a position closing the passage between the second control valve inlet 503 and the second control valve outlet 504, the second control valve control fluid inlet 502 being for introducing hydraulic fluid for bringing the second control valve inlet 503 and the second control valve outlet 504 into communication.
The second control valve 5 further includes a third flow passage 13 configured to communicate the inlet end of the first check valve 301 with the second control valve inlet 503, the third flow passage 13 being provided on the regeneration valve body 12 and communicating the second control valve chamber with the first check valve chamber.
The regeneration valve further comprises a third check valve 7, the inlet end 701 of the third check valve 7 being in communication with the second control valve outlet 504, the outlet end 702 of the third check valve 7 being configured to output hydraulic fluid output when the first check valve 301 is in reverse conduction, the third check valve 7 comprising a third check valve chamber extending from a third surface of the regeneration valve body 12 towards the inside, the regeneration valve further comprising a fourth flow passage 14 communicating the inlet end 701 of the third check valve 7 with the second control valve outlet 504, the fourth flow passage 14 being located between the second control valve chamber and the first check valve chamber and communicating the second control valve chamber and the first check valve chamber.
The third check valve 7 further comprises a third check valve plug 11 arranged outside the second check valve cavity, the third check valve 7 further comprises a third check valve spring 703 arranged in the second check valve cavity, and the third check valve spring 703 is used for pushing the third check valve plug towards a position closing a pore channel between an inlet end 701 and an outlet end 702 of the third check valve. When hydraulic fluid is input at the inlet end 701 of the third check valve 7, the hydraulic fluid pushes the third check valve to move so as to make the inlet end 701 to the outlet end 702 of the third check valve 7 conductive.
The matching relationship between the third check valve 7, the second control valve 5 and the load holding valve 3 is substantially the same as the matching relationship between the second check valve 6, the first control valve 4 and the load holding valve 3, and the working principle thereof will not be described herein.
The second control valve 5 and the first control valve 4 are symmetrically arranged on both sides of the first check valve chamber. The internal mechanism of the regeneration valve is simplified, the flow path between the valves is shortened or smoothed by reasonably arranging the positions of the valves, which is advantageous for reducing the pressure drop when the hydraulic fluid flows through the regeneration valve.
According to another aspect of the present application, there is also provided a multiple valve comprising the above-described regeneration valve 100, the regeneration valve being one of the multiple valves.
According to another aspect of the present application, there is also provided a hydraulic system including a regeneration valve 100 and a first hydraulic actuator 200, as shown in connection with fig. 3 and 4. The hydraulic system further comprises a second hydraulic actuator 400 or an accumulator 500. The first hydraulic actuator 200 includes an outlet to the holding valve inlet 303; the second hydraulic actuator 400 or accumulator 500 communicates with the first control valve outlet 404.
In some embodiments, one of the second hydraulic actuator 400 and the accumulator 500 communicates with the outlet end 602 of the second check valve 6 and the other communicates with the outlet end 702 of the third check valve 7.
The hydraulic system includes a directional valve 300 for controlling the first hydraulic actuator 200, the directional valve 300 being provided separately from the regeneration valve 100.
According to another aspect of the present application, there is also provided a construction machine including the hydraulic system described above.
Referring to fig. 4, the construction machine includes a boom capable of swinging and a power unit 600 for driving the boom to swing. The construction machine further comprises a multi-way valve of the hydraulic system, the multi-way valve comprising a boom work link 700 controlling a hydraulic cylinder driving the boom, the boom work link being in communication with the regeneration valve.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather, any modification, equivalent replacement, improvement or the like which comes within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (16)
1. A regeneration valve, comprising:
A regeneration valve body (12);
A load holding valve (3) comprising a first check valve (301), a holding valve inlet (303) communicating with an outlet end of the first check valve (301) and provided on the regeneration valve body (12), and a holding valve control fluid port (308) for introducing hydraulic fluid for reverse conducting the first check valve (301), the first check valve (301) comprising a first check valve cavity provided on the regeneration valve body (12) and a first check valve spool provided within the first check valve cavity;
A first control valve (4) including a first control valve chamber provided on the regeneration valve body (12), a first control valve spool provided in the first control valve chamber, a first control valve inlet (403) communicating with an inlet end of the first check valve (301), a first control valve outlet (404) for outputting hydraulic fluid, and a first control valve control fluid inlet (402) for introducing hydraulic fluid that causes the first control valve inlet (403) and the first control valve outlet (404) to communicate; and
A first solenoid valve (1) comprising a first solenoid valve inlet (101) and a first solenoid valve outlet (102), the first solenoid valve outlet (102) being in communication with the first control valve control fluid inlet (402) and the holding valve control fluid inlet (308), respectively, to render the first check valve (301) reverse conducting while the first control valve inlet (403) and the first control valve outlet (404) are conducting;
The first check valve chamber extends inward from a first surface of the regeneration valve body (12), the first control valve chamber extends inward from a second surface of the regeneration valve body (12), and the first surface intersects the second surface.
2. The regeneration valve according to claim 1, further comprising a first flow passage (9) configured to communicate an inlet end of the first check valve (301) with the first control valve inlet (403), the first flow passage (9) being provided on the regeneration valve body (12) and communicating the first control valve chamber with the first check valve chamber.
3. The regeneration valve according to claim 1, further comprising a second one-way valve (6), an inlet end (601) of the second one-way valve (6) being in communication with the first control valve outlet (404), an outlet end (602) of the second one-way valve (6) being configured to output hydraulic fluid output when the first one-way valve (301) is in reverse conduction, the second one-way valve (6) comprising a second one-way valve chamber extending inwardly from the second surface of the regeneration valve body (12), the regeneration valve further comprising a second flow passage (8) communicating the inlet end (601) of the second one-way valve (6) with the first control valve outlet (404), the second flow passage (8) being located between and in communication with the first control valve chamber and the second one-way valve chamber.
4. A regeneration valve as claimed in claim 3, wherein the second check valve chamber is parallel to the first control valve chamber.
5. The regeneration valve according to claim 1, characterized in that the load holding valve (3) further comprises a state control valve configured to reverse-conduct the first one-way valve (301), the state control valve comprising:
A state control valve body (311) provided with a valve cavity and the holding valve control fluid port (308);
A first port (307) communicating the first check valve chamber and the valve chamber of the state control valve;
A return port (Dr 3) configured to drain hydraulic fluid;
a state control valve element (304) provided in a valve chamber of the state control valve and configured to be moved by a hydraulic fluid introduced from the holding valve control fluid port (308) to communicate the return port (Dr 3) with the first port (307).
6. A regeneration valve according to claim 5, characterized in that the status control valve body (311) is mounted on the first surface of the regeneration valve body (12).
7. The regeneration valve according to claim 1, characterized in that the regeneration valve body (12) has a rectangular plate-like structure, and one of the first surface and the second surface is located at one end in a length direction of the regeneration valve body (12), and the other is located at one end in a width direction of the regeneration valve body (12).
8. The regeneration valve according to claim 1, characterized in that the first control valve (4) further comprises a first control valve end cap (401) covering the opening of the first control valve chamber on the second surface, the first solenoid valve (1) being mounted outside the first control valve end cap (401), the first control valve end cap (401) being provided with a channel communicating the first solenoid valve outlet (102) and the first control valve control fluid inlet (402).
9. The regeneration valve of claim 1, further comprising:
A second control valve (5) including a second control valve chamber provided on a third surface of the regeneration valve body (12) facing away from the second surface, a second control valve spool provided in the second control valve chamber, a second control valve inlet (503) communicating with an inlet end of the first check valve (301), a second control valve outlet (504) for outputting hydraulic fluid, and a second control valve control fluid inlet (502) for introducing hydraulic fluid that causes the second control valve inlet (503) and the second control valve outlet (504) to communicate; and
The second solenoid valve (2) comprises a second solenoid valve inlet (201) and a second solenoid valve outlet (202), and the second solenoid valve outlet (202) is respectively communicated with the second control valve control fluid inlet (502) and the holding valve control fluid inlet (308) so that the first check valve (301) is conducted reversely and simultaneously the second control valve inlet (503) and the second control valve outlet (504) are conducted.
10. The regeneration valve of claim 9, further comprising a third flow passage (13) configured to communicate an inlet end of the first check valve (301) with the second control valve inlet (503), the third flow passage (13) being provided on the regeneration valve body (12) and communicating the second control valve chamber with the first check valve chamber.
11. The regeneration valve according to claim 9, characterized in that it further comprises a third non-return valve (7), an inlet end (701) of the third non-return valve (7) being in communication with the second control valve outlet (504), an outlet end (702) of the third non-return valve (7) being configured to output hydraulic fluid output when the first non-return valve (301) is in reverse conduction, the third non-return valve (7) comprising a third non-return valve chamber extending from the third surface of the regeneration valve body (12) towards the inside, the regeneration valve further comprising a fourth flow passage (14) communicating the inlet end (701) of the third non-return valve (7) with the second control valve outlet (504), the fourth flow passage (14) being located between and communicating the second control valve chamber and the first non-return valve chamber.
12. The regeneration valve of claim 9, wherein the valve is configured to,
The second control valve (5) and the first control valve (4) are symmetrically arranged at two sides of the first unidirectional valve cavity.
13. A multi-way valve, characterized in that it comprises a regeneration valve (100) according to any one of claims 1 to 12, said regeneration valve being one working way of said multi-way valve.
14. A hydraulic system, comprising:
The regeneration valve (100) of any one of claims 1 to 12;
-a first hydraulic actuator (200) comprising an outlet to said holding valve inlet (303);
a second hydraulic actuator (400) or accumulator (500) is in communication with the first control valve outlet (404).
15. The hydraulic system of claim 14, further comprising a reversing valve (300) for controlling the first hydraulic actuator (200), the reversing valve (300) being provided separate from the regeneration valve (100).
16. A construction machine comprising a hydraulic system according to claim 14 or 15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111457130.4A CN114060341B (en) | 2021-12-01 | 2021-12-01 | Regeneration valve, multi-way valve, hydraulic system and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111457130.4A CN114060341B (en) | 2021-12-01 | 2021-12-01 | Regeneration valve, multi-way valve, hydraulic system and engineering machinery |
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| CN114060341A CN114060341A (en) | 2022-02-18 |
| CN114060341B true CN114060341B (en) | 2024-06-04 |
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| CN202111457130.4A Active CN114060341B (en) | 2021-12-01 | 2021-12-01 | Regeneration valve, multi-way valve, hydraulic system and engineering machinery |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767207A (en) * | 2012-08-06 | 2012-11-07 | 徐工集团工程机械股份有限公司 | Excavator boom energy regenerating device and boom energy regenerating valve block thereof |
| CN103452149A (en) * | 2013-08-26 | 2013-12-18 | 中外合资沃得重工（中国）有限公司 | Potential energy recovery hydraulic control device for movable arm of excavator |
| CN103790196A (en) * | 2014-01-17 | 2014-05-14 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy recycle control device of hydraulic excavator |
| CN104314904A (en) * | 2014-08-19 | 2015-01-28 | 合肥长源液压股份有限公司 | Integrated valve for energy recovery and reuse of excavator and capable of preventing overload |
| CN110541857A (en) * | 2019-09-26 | 2019-12-06 | 江苏恒立液压科技有限公司 | Regenerative control hydraulic system |
| CN110872857A (en) * | 2019-11-29 | 2020-03-10 | 徐州徐工液压件有限公司 | Multifunctional energy recovery device and hydraulic excavator system carrying same |
| CN210829927U (en) * | 2019-09-26 | 2020-06-23 | 江苏恒立液压科技有限公司 | Hydraulic control system |
| CN113323072A (en) * | 2021-06-16 | 2021-08-31 | 徐州阿马凯液压技术有限公司 | Self-control multifunctional reversing valve group and hydraulic excavator carrying same |
-
2021
- 2021-12-01 CN CN202111457130.4A patent/CN114060341B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767207A (en) * | 2012-08-06 | 2012-11-07 | 徐工集团工程机械股份有限公司 | Excavator boom energy regenerating device and boom energy regenerating valve block thereof |
| CN103452149A (en) * | 2013-08-26 | 2013-12-18 | 中外合资沃得重工（中国）有限公司 | Potential energy recovery hydraulic control device for movable arm of excavator |
| CN103790196A (en) * | 2014-01-17 | 2014-05-14 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy recycle control device of hydraulic excavator |
| CN104314904A (en) * | 2014-08-19 | 2015-01-28 | 合肥长源液压股份有限公司 | Integrated valve for energy recovery and reuse of excavator and capable of preventing overload |
| CN110541857A (en) * | 2019-09-26 | 2019-12-06 | 江苏恒立液压科技有限公司 | Regenerative control hydraulic system |
| CN210829927U (en) * | 2019-09-26 | 2020-06-23 | 江苏恒立液压科技有限公司 | Hydraulic control system |
| CN110872857A (en) * | 2019-11-29 | 2020-03-10 | 徐州徐工液压件有限公司 | Multifunctional energy recovery device and hydraulic excavator system carrying same |
| CN113323072A (en) * | 2021-06-16 | 2021-08-31 | 徐州阿马凯液压技术有限公司 | Self-control multifunctional reversing valve group and hydraulic excavator carrying same |
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| CN114060341A (en) | 2022-02-18 |
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