CN114233699B - Separable hydraulic cylinder double-acting energy feedback system and method thereof - Google Patents
Separable hydraulic cylinder double-acting energy feedback system and method thereof Download PDFInfo
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- CN114233699B CN114233699B CN202111317610.0A CN202111317610A CN114233699B CN 114233699 B CN114233699 B CN 114233699B CN 202111317610 A CN202111317610 A CN 202111317610A CN 114233699 B CN114233699 B CN 114233699B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 162
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 238000005381 potential energy Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003031 feeding effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 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
- 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
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
- F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
- F05B2220/70642—Application in combination with an electrical generator of the alternating current (A.C.) type of the synchronous type
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a separable double-acting energy feedback system of a hydraulic cylinder and a method thereof. The hydraulic oil pump comprises an oil tank, a hydraulic cylinder, an oil motor, an oil pump and a motor, wherein a first pipeline connector and a second pipeline connector are respectively arranged at the top of the hydraulic cylinder and the bottom of the hydraulic cylinder, the oil tank is communicated with the first pipeline connector through an oil supply pipe, the second pipeline connector is communicated with the oil motor, the oil motor is communicated with the oil tank through an oil return pipe, the oil tank is communicated with the oil pump, the oil pump is communicated with the second pipeline connector through an oil supply pipe, the first pipeline connector is communicated with the oil tank through an oil return pipe, a first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the oil motor, the motor and the oil pump, two ends of the second rotating shaft are respectively communicated with the left side face and the right side face of the motor, the left end of the second rotating shaft is connected with the first rotating shaft, and the right end of the second rotating shaft is connected with the third rotating shaft through a separable coupling component. The beneficial effects of the invention are as follows: potential energy of hydraulic oil return can be converted into electric energy.
Description
Technical Field
The invention relates to the technical field of hydraulic cylinders, in particular to a separable hydraulic cylinder double-acting energy feedback system and a method thereof.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston; the hydraulic cylinder basically consists of a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are necessary for other devices depending on the specific application. The hydraulic cylinder has three main types, namely a piston cylinder, a plunger cylinder and a swing cylinder, wherein the piston cylinder and the plunger cylinder realize reciprocating linear motion, output speed and thrust, and the swing cylinder realize reciprocating swing and output angular speed (rotating speed) and torque.
The existing vertical installation type hydraulic cylinder can form extremely large potential energy due to dead weight and external load when falling, and a conventional oil way is a direct oil return tank, so that energy waste is easily caused.
Disclosure of Invention
The invention provides a separable type double-acting energy feeding system of a hydraulic cylinder and a method thereof, which are used for overcoming the defect of energy waste caused by direct oil return of pressure oil in the hydraulic cylinder when a piston in the vertically-installed hydraulic cylinder falls down in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a separable pneumatic cylinder is two effect and is presented can system, includes oil tank, pneumatic cylinder, oil motor, oil pump and motor, the top of pneumatic cylinder and the bottom of pneumatic cylinder are equipped with pipeline interface one and pipeline interface two respectively, be linked together through oil supply pipe one between oil tank and the pipeline interface one, be linked together through oil return pipe one between pipeline interface two and the oil motor, between oil pump and the oil tank, be linked together through oil supply pipe two between oil pump and the pipeline interface two, still be linked together through oil return pipe two between pipeline interface one and the oil tank, be equipped with pivot one, pivot two, pivot three on oil motor, the oil pump respectively, the both ends of pivot two link up the left and right sides face of motor respectively, be connected through separable shaft coupling subassembly between the left end of pivot two and the pivot one, between the right-hand member of pivot two and the pivot three.
The hydraulic cylinder is a vertically installed hydraulic cylinder; the hydraulic cylinder is arranged above the oil motor, and the oil motor is arranged above the oil tank; the motor acts bi-directionally, both as a motor and as a generator. When the motor is used as a motor, the second rotating shaft and the third rotating shaft are fixedly connected through the separable coupler assembly, the second rotating shaft and the first rotating shaft are separated, and when the oil pump works, the third rotating shaft on the second rotating shaft rotates, oil is pumped into the hydraulic cylinder from the oil tank through the second oil supply pipe, so that a piston rod on the hydraulic cylinder moves upwards, and meanwhile, the second rotating shaft on the motor is driven to synchronously rotate; when the hydraulic cylinder is used as a generator, the second rotating shaft and the first rotating shaft are fixedly connected through the separable coupler assembly, the second rotating shaft and the third rotating shaft are separated, pressure oil at the bottom of the hydraulic cylinder flows back into the oil tank through the oil return pipe once the oil motor under the action of gravity and external load, and the first rotating shaft on the oil motor is pushed to rotate when the pressure oil flows through the oil motor, so that the second rotating shaft on the motor is driven to synchronously rotate, the motor starts to generate electricity, the purpose of converting potential energy of hydraulic oil return into electric energy can be well achieved through the design, and the waste of resources is reduced. Simple structure and convenient implementation.
Preferably, the motor is fixed on the bottom plate, the motor is fixed on the upper end face of the motor base, a bottom plate chute is arranged on the bottom plate, the bottom plate chute is respectively arranged on the left side and the right side of the motor base, sliding seats are slidably connected on the bottom plate chute, the oil pump and the oil motor are respectively fixed on the two sliding seats, separating oil cylinders are respectively fixed on the left side and the right side of the motor base, and the two sliding seats are respectively fixedly connected with piston rods of the two separating oil cylinders. The first rotating shaft, the second rotating shaft and the third rotating shaft are positioned on the same straight line, the oil motor is driven to move by starting the left separating oil cylinder, separation or fixation of the second rotating shaft and the third rotating shaft is achieved, the oil pump is driven to move by starting the right separating oil cylinder, separation or fixation of the second rotating shaft and the first rotating shaft is achieved, and the switching basis is automatic switching according to the ascending and descending states of the hydraulic cylinder. Through the design of bottom plate spout and sliding seat, played the guide effect to the removal of oil motor and the removal of oil pump.
Preferably, the separable coupler assembly comprises a rotating shaft sliding groove arranged on the left end face and the right end face of the rotating shaft, the rotating shaft sliding groove on the left end face of the rotating shaft is matched with the first rotating shaft, the rotating shaft sliding groove on the right end face of the rotating shaft is matched with the rotating shaft in a three-phase mode, a plurality of side sliding grooves are uniformly distributed on the inner side wall of the rotating shaft sliding groove in an annular mode, clamping pins are arranged in the side sliding grooves, and clamping grooves matched with the clamping pins are formed in the side wall of the first rotating shaft and the side wall of the third rotating shaft. Under the natural state: the first rotating shaft and the third rotating shaft are respectively inserted into rotating shaft sliding grooves on the left end face and the right end face of the second rotating shaft, and are in a clamping state with the second rotating shaft through the matching of the clamping pin and the clamping groove; when a piston rod on the hydraulic cylinder ascends, the separation oil cylinder on the left side is started to separate the rotating shaft II from the rotating shaft I (at the moment, a bayonet lock in a sliding groove of the rotating shaft on the left side is automatically separated from a bayonet groove on the rotating shaft I), so that a motor and an oil motor are separated, then an oil pump works, so that the piston rod on the hydraulic cylinder ascends and drives the motor to work, and the separation oil cylinder on the left side automatically resets after the ascending is finished; when a piston rod on the hydraulic cylinder falls, the separation oil cylinder on the right side is started to separate the second rotating shaft from the third rotating shaft (at the moment, the clamping pin in the sliding groove of the right rotating shaft is automatically separated from the clamping groove on the third rotating shaft), so that the motor and the oil pump are separated, and then the oil motor is driven to work through falling pressure oil, so that the motor is driven to generate electricity, and the separation oil cylinder on the right side is automatically reset after the falling is finished.
Preferably, the shape of the bayonet lock is cuboid, still be equipped with the spring in the side spout, the one end of spring is connected with the bottom surface of side slip groove, the other end of spring is connected with the one end of bayonet lock, the other end of bayonet lock just is located the other end that is close to pivot spout bottom surface one side and bayonet lock and is located the other end that keeps away from pivot spout bottom surface one side and all is equipped with the fillet, the shape of draw-in groove and the shape phase-match of bayonet lock other end. The spring plays a role in connecting the bayonet lock with the side chute, and can push the bayonet lock at the position of the bayonet lock slot. Through the shape design of bayonet lock, can make pivot one (or pivot three) and pivot two realize separating or joint smoothly, can guarantee again that pivot one (or pivot three) is when driving the pivot two and rotate, can be in pivot two's pivot spout steadily all the time.
Preferably, a side cavity matched with the side sliding groove is formed in the second rotating shaft, the side cavity is arranged on the side surface of the side sliding groove, all the side sliding grooves and all the side cavities are located in the same plane, a through groove and a through hole are formed between the side sliding groove and the side cavity, a top block is arranged in the side sliding groove, one face of the top block is fixedly connected with the other end of the spring, a guiding inclined plane I and a guiding inclined plane II which are matched with each other are respectively arranged between the other face of the top block and the end face of one end of the clamping pin, a compression rod I matched with the through groove is fixed on the top block, the compression rod I penetrates through the through groove to be arranged in the side cavity and is in sliding connection with the through groove, a compression rod II matched with the through hole is arranged on the side wall of the clamping pin, an axial sliding groove matched with one end of the compression rod II is arranged on the side wall of the clamping pin, one end of the compression rod II is arranged on the axial sliding groove and is in sliding connection with the through hole, a torsion spring seat is fixed in the side cavity, the compression rod I and the compression rod II is arranged on the side spring seat is in contact with the two ends of the compression rod I and the compression rod II. When the first rotating shaft (or the third rotating shaft) is inserted into the rotating shaft sliding groove, the clamping pin in the sideslip groove can move towards the bottom surface of the sideslip groove under the pressure action of the side wall of the first rotating shaft (or the third rotating shaft), and the clamping pin can smoothly move in the sideslip groove through the relative sliding design between the axial sliding groove and the second pressing rod and the relative sliding design between the through groove and the first pressing rod. When the first rotating shaft (or the third rotating shaft) drives the second rotating shaft to rotate, the clamping pin can be pressed on the side wall (one side close to the side cavity) of the side sliding groove under the action of the first rotating shaft (or the third rotating shaft), one end of the second pair of swinging rods of the pressing rod generates pressure, the other end of the swinging rod can generate counter pressure on the first pressing rod and the jacking block under the action of the torsion spring seat, the counter pressure is converted into an outward thrust of the jacking block to the clamping pin under the action of the first guiding inclined surface and the second guiding inclined surface, the clamping pin is further firmly jacked at the clamping groove through the thrust, the stability of the first rotating shaft and the third rotating shaft when the second rotating shaft is driven to rotate is improved, and vibration noise is prevented.
Preferably, the energy feedback device further comprises a first energy feedback valve, a second energy feedback valve and a safety valve, wherein the first oil supply pipe and the first oil return pipe are both arranged on the first energy feedback valve, the second oil supply pipe and the second oil return pipe are both arranged on the second energy feedback valve, the oil tank and the second pipeline interface are further communicated through three phases of the oil supply pipe, the first pipeline interface and the oil tank are further communicated through three phases of the oil return pipe, and the third oil supply pipe and the third oil return pipe are both arranged on the safety valve. The energy feedback valve is used for controlling the switch and the flow rate of the first oil supply pipe and the first oil return pipe; the energy feedback valve II plays a role in controlling the switch and the flow rate of the oil supply pipe II and the oil return pipe II; by additionally arranging the bypass safety valve, once the feed system fails, the feed system can automatically cut into the bypass loop, and normal production of equipment is not affected.
Preferably, the motor further comprises a frequency converter, an LCL circuit, a three-phase power grid and an AFE, wherein a wire connector is arranged on the motor, the wire connector, the frequency converter, the LCL circuit and the three-phase power grid are sequentially connected in series, and the frequency converter and the AFE are connected in parallel. When the motor is used as a generator, the generated current can be converted into three-phase 380V and 50HZ electric energy through the treatment of a frequency converter, an AFE (active front end) and an LCL circuit (feed filter loop), and the electric energy is transmitted back to a power grid, so that the waste of resources is reduced. And by adopting the AFE, the feedback electric energy is high in quality and free of distortion, and reliable grid connection can be realized.
Preferably, the motor is of the permanent magnet synchronous motor type. The feeding effect is good, and the efficiency can reach 92%.
The invention also provides a separable hydraulic cylinder double-acting energy feeding method, which comprises the following steps:
when the hydraulic cylinder needs to ascend, a second rotating shaft on the motor is controlled to be in three-phase connection with a first rotating shaft on the oil pump, and separated from the first rotating shaft on the oil motor, then pressure oil is pumped into the hydraulic cylinder from an oil tank through a second oil supply pipe by the oil pump, and when the third rotating shaft on the oil pump rotates, the second rotating shaft on the motor is driven to synchronously rotate, so that the motor works as a motor;
when the hydraulic cylinder needs to fall, a second rotating shaft on the motor is controlled to be connected with a first rotating shaft on the oil motor and separated from a third rotating shaft on the oil pump, and when pressure oil in the hydraulic cylinder falls back to the oil tank through the oil motor under the action of gravity and external load, the first rotating shaft on the oil motor is pushed to rotate, so that the second rotating shaft on the motor is driven to synchronously rotate, and the motor starts to generate electricity as a generator.
The motor can be driven by the oil pump to work as a motor, and can also be driven by the oil motor to generate electricity as a generator, so that the waste of resources is reduced.
Preferably, the current generated by the motor in the second step is converted into electric energy of 380V and 50HZ in three phases through the treatment of a frequency converter, an AFE circuit and an LCL circuit, and the electric energy is transmitted back to a three-phase power grid. The waste of resources is reduced.
The beneficial effects of the invention are as follows: potential energy of hydraulic oil return can be converted into electric energy, so that waste of resources is reduced; the structure is simple, and the implementation is convenient; the stability of the first rotating shaft and the third rotating shaft when driving the second rotating shaft to rotate is improved, and vibration noise is prevented from being generated; by additionally arranging the bypass safety valve, once the feed system fails, the feed system can automatically cut into a bypass loop, and normal production of equipment is not affected; by adopting the AFE, the feedback electric energy has high quality and no distortion, and can realize reliable grid connection; the feeding effect is good.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a structural connection diagram of the first, second and third rotating shafts in FIG. 1;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
fig. 4 is an enlarged view at C in fig. 3;
FIG. 5 is a cross-sectional view at B-B in FIG. 2;
FIG. 6 is a cross-sectional view at D in FIG. 5;
fig. 7 is a perspective view of the bayonet.
In the figure: 1. the hydraulic cylinder, 2, 3, pipe interface two, 4, safety, 5, supply three, 6, supply three, oil tank, 8, base plate, 9, base plate, 10, slide, 11, oil motor, 12, shaft one, 13, separate cylinder, 14, motor seat, 15, motor 16, shaft two, 17, shaft three, 18, oil pump, 19, AFE,20, 21, three-phase grid, 22, LCL, 23, return two, 24, feed two, 25, supply two, 26, return one, 27, feed two, 28, supply one, 29, shaft slide, 31, side slide, 32, spring, 33, bayonet, 34, fillet, 35, bayonet, 36, guide ramp two, 37, top block, 38, guide ramp one, 39, through slot, 40, first, 41, 42, torsion spring seat, 43, through hole 44, second, 45, side slide.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
In the embodiment shown in fig. 1, a separable hydraulic cylinder double-acting energy feeding system comprises an oil tank 7, a hydraulic cylinder 1, an oil motor 11, an oil pump 18 and a motor 15, wherein a first pipeline connector 2 and a second pipeline connector 3 are respectively arranged at the top of the hydraulic cylinder 1 and the bottom of the hydraulic cylinder 1, the oil tank 7 and the first pipeline connector 2 are communicated through a first oil supply pipe 28, the second pipeline connector 3 and the oil motor 11, the oil motor 11 and the oil tank 7 are sequentially communicated through a first oil return pipe 26, the oil tank 7 and the oil pump 18, the oil pump 18 and the second pipeline connector 3 are sequentially communicated through a second oil supply pipe 25, the first pipeline connector 2 and the oil tank 7 are also communicated through a second oil return pipe 23, a first rotating shaft 12, a second rotating shaft 16 and a third rotating shaft 17 are respectively arranged on the oil motor 11, the motor 15 and the oil pump 18, two ends of the second rotating shaft 16 are respectively communicated with the left side surface and the right side surface of the motor 15, the left end of the second rotating shaft 16 and the first rotating shaft 12, and the right end of the second rotating shaft 16 and the third rotating shaft 17 are respectively connected through separable coupling components.
As shown in fig. 1, the motor cabinet further comprises a bottom plate 8, a motor cabinet 14 is fixed on the bottom plate 8, a motor 15 is fixed on the upper end face of the motor cabinet 14, a bottom plate sliding groove 9 is arranged on the bottom plate 8, the bottom plate sliding groove 9 is respectively arranged on the left side and the right side of the motor cabinet 14, sliding seats 10 are slidingly connected on the bottom plate sliding groove 9, an oil pump 18 and an oil motor 11 are respectively fixed on the two sliding seats 10, separating oil cylinders 13 are respectively fixed on the left side and the right side of the motor cabinet 14, and the two sliding seats 10 are respectively fixedly connected with piston rods of the two separating oil cylinders 13.
As shown in fig. 2 and fig. 3, the separable coupling assembly comprises a rotating shaft sliding groove 29 arranged on the left end face and the right end face of a rotating shaft II 16, the rotating shaft sliding groove 29 on the left end face of the rotating shaft II 16 is matched with a rotating shaft I12, the rotating shaft sliding groove 29 on the right end face of the rotating shaft II 16 is matched with a rotating shaft III 17, a plurality of sideslip grooves 31 are uniformly distributed on the inner side wall of the rotating shaft sliding groove 29 in a ring shape, clamping pins 33 are arranged in the sideslip grooves 31, and clamping grooves 35 matched with the clamping pins 33 are formed in the side wall of the rotating shaft I12 and the side wall of the rotating shaft III 17.
As shown in fig. 4 and 7, the bayonet lock 33 is rectangular, the side sliding groove 31 is also provided with a spring 32, one end of the spring 32 is connected with the bottom surface of the side sliding groove 31, the other end of the spring 32 is connected with one end of the bayonet lock 33, the other end of the bayonet lock 33 is positioned at one side close to the bottom surface of the rotating shaft sliding groove 29 and the other end of the bayonet lock 33 and at one side far from the bottom surface of the rotating shaft sliding groove 29, round corners 34 are arranged, and the shape of the bayonet lock 35 is matched with the shape of the other end of the bayonet lock 33.
As shown in fig. 5 and 6, a side cavity 45 matched with the side sliding groove 31 is arranged in the second rotating shaft 16, the side cavity 45 is arranged on the side surface of the side sliding groove 31, all the side sliding grooves 31 and all the side cavities 45 are located in the same plane, a through groove 39 and a through hole 43 are arranged between the side sliding groove 31 and the side cavity 45, a top block 37 is arranged in the side sliding groove 31, one surface of the top block 37 is fixedly connected with the other end of the spring 32, a guiding inclined plane 38 and a guiding inclined plane 36 which are matched with each other are respectively arranged between the other surface of the top block 37 and the end surface of one end of the bayonet 33, a first pressing rod 40 matched with the through groove 39 is fixed on the top block 37, the first pressing rod 40 passes through the through groove 39 and is arranged in the side cavity 45 and is in sliding connection with the through groove 39, a second pressing rod 44 matched with the through hole 43 is arranged on the bayonet 33, an axial sliding groove 46 matched with one end of the bayonet 33 is arranged on the side wall of the bayonet 33, one end of the second pressing rod 44 is arranged on the axial sliding groove 46 and is in sliding connection with the other end of the spring seat 43, the other end of the pressing rod 44 passes through the through hole 43 and is in the side cavity 45 and is in sliding connection with the through hole 43, the first pressing rod and the second pressing rod 41 is in sliding seat 41 is in contact with the opposite end of the first pressing rod 41 and the second pressing rod 41 is in the opposite end is in contact with the second pressing rod 41.
As shown in fig. 1, the energy feedback valve further comprises a first energy feedback valve 27, a second energy feedback valve 24 and a safety valve 4, wherein the first oil supply pipe 28 and the first oil return pipe 26 are both arranged on the first energy feedback valve 27, the second oil supply pipe 25 and the second oil return pipe 23 are both arranged on the second energy feedback valve 24, the oil tank 7 and the second pipeline interface 3 are also communicated through the third oil supply pipe 5, the first pipeline interface 2 and the oil tank 7 are also communicated through the third oil return pipe 6, and the third oil supply pipe 5 and the third oil return pipe 6 are both arranged on the safety valve 4.
As shown in fig. 1, the motor 15 is provided with a wire connector, which is connected in series with the frequency converter 20, the LCL circuit 22 and the three-phase power grid 21 in sequence, and the frequency converter 20 is connected in parallel with the AFE 19.
The motor 15 is of the permanent magnet synchronous motor type.
The invention also provides a separable hydraulic cylinder double-acting energy feeding method, which comprises the following steps:
when the hydraulic cylinder 1 needs to ascend, a second rotating shaft 16 on the motor 15 is controlled to be connected with a third rotating shaft 17 on the oil pump 18 and separated from a first rotating shaft 12 on the oil motor 11, then pressure oil is pumped into the hydraulic cylinder 1 from the oil tank 7 through a second oil supply pipe 25 by the oil pump 18, and when the third rotating shaft 17 on the oil pump 18 rotates, the second rotating shaft 16 on the motor 15 is driven to synchronously rotate, so that the motor 15 works as a motor;
when the hydraulic cylinder 1 needs to fall, the second rotating shaft 16 on the control motor 15 is connected with the first rotating shaft 12 on the oil motor 11 and separated from the third rotating shaft 17 on the oil pump 18, and when the pressure oil in the hydraulic cylinder 1 falls back to the oil tank 7 through the oil motor 11 under the action of gravity and external load, the first rotating shaft 12 on the oil motor 11 is pushed to rotate, so that the second rotating shaft 16 on the motor 15 is driven to synchronously rotate, and at the moment, the motor 15 serves as a generator to start generating electricity.
Preferably, in the second step, the current generated by the motor 15 is converted into electric energy of three phases 380V and 50HZ through the processing of the frequency converter 20, the AFE19 and the LCL circuit 22, and the electric energy is transmitted back to the three-phase power grid 21.
Working principle:
in a natural state, the first rotating shaft 12 and the third rotating shaft 17 are respectively inserted into rotating shaft sliding grooves 29 on the left end face and the right end face of the second rotating shaft 16, and are in clamping connection with the second rotating shaft 16 through the matching of the clamping pin 33 and the clamping groove 35.
When the piston rod on the hydraulic cylinder 1 needs to go up, the separating cylinder 13 on the left side is started to separate the rotating shaft two 16 from the rotating shaft one 12 (the bayonet 33 in the rotating shaft chute 29 on the left side can be automatically separated from the bayonet slot 35 on the rotating shaft one 12), so as to separate the motor 15 from the oil motor 11. At this time, the oil pump 18 works, the rotating shaft III 17 starts to rotate, pressure oil is pumped into the hydraulic cylinder 1 from the oil tank 7 through the oil supply pipe II 25, a piston rod on the hydraulic cylinder 1 moves upwards, meanwhile, the rotating shaft II 16 on the motor 15 is driven to rotate synchronously, at this time, the motor 15 serves as a motor, and the separating oil cylinder 13 on the left side automatically resets after the upward movement of the piston rod on the hydraulic cylinder 1 is finished.
When the piston rod on the hydraulic cylinder 1 needs to fall, the second rotating shaft 16 and the third rotating shaft 17 are separated by starting the separating oil cylinder 13 on the right side (the bayonet 33 in the sliding groove 29 of the second rotating shaft 29 can be automatically separated from the bayonet slot 35 on the third rotating shaft 17), so as to separate the motor 15 and the oil pump 18. When the hydraulic cylinder 1 falls down to return oil, the pressure oil at the bottom of the hydraulic cylinder 1 flows back to the oil tank 7 through the oil motor 11 by gravity and under the action of external load through the first oil return pipe 26, and when the pressure oil flows through the oil motor 11, the first rotating shaft 12 on the oil motor 11 is pushed to rotate, so as to drive the second rotating shaft 16 on the motor 15 to synchronously rotate, at the moment, the motor 15 starts to generate electricity as a generator (the generated current can be converted into electric energy of three phases 380V and 50HZ through the treatment of the frequency converter 20, the AFE19 (active front end) and the LCL circuit 22 (feed filter circuit), and is conveyed back to the three-phase power grid 21), and the separation oil cylinder 13 on the right side automatically resets after the falling.
Claims (8)
1. The utility model provides a separable pneumatic cylinder is two effect and is presented ability system, its characterized in that includes oil tank (7), pneumatic cylinder (1), oil motor (11), oil pump (18) and motor (15), the top of pneumatic cylinder (1) and the bottom of pneumatic cylinder (1) are equipped with pipeline interface one (2) and pipeline interface two (3) respectively, be linked together through oil feed pipe one (28) between oil tank (7) and pipeline interface one (2), be linked together through oil return pipe one (26) between oil motor (11) and oil tank (7) between pipeline interface two (3) and oil motor (11), be linked together through oil return pipe one (26) between oil tank (7) and oil pump (18), be linked together through oil feed pipe two (25) between oil pump (18) and pipeline interface two (3), still be linked together through oil return pipe two (23) between pipeline interface one (2) and oil tank (7), be equipped with one (12) pivot, two (16) on motor (15) and oil pump (18) respectively, three (17) between two pivot (16) two ends of pivot (12) respectively, the pivot (16) are link up between two sides respectively The right end of the second rotating shaft (16) and the third rotating shaft (17) are connected through a separable shaft coupling assembly, the separable shaft coupling assembly comprises rotating shaft sliding grooves (29) arranged on the left end face and the right end face of the second rotating shaft (16), the rotating shaft sliding grooves (29) on the left end face of the second rotating shaft (16) are matched with the first rotating shaft (12), the rotating shaft sliding grooves (29) on the right end face of the second rotating shaft (16) are matched with the third rotating shaft (17), a plurality of sideslip grooves (31) are uniformly distributed on the inner side wall of the rotating shaft sliding grooves (29) in an annular mode, clamping pins (33) are arranged in the sideslip grooves (31), clamping grooves (35) matched with the clamping pins (33) are formed in the side wall of the first rotating shaft (12) and the side wall of the third rotating shaft (17), springs (32) are arranged in the sideslip grooves (31), one ends of the springs (32) are connected with the bottom surfaces of the sideslip grooves (31), the other ends of the springs (32) are connected with the bottom surfaces of the clamping pins (33) which are close to one side of the rotating shaft sliding grooves (29), the other ends of the springs (33) are far away from the bottom surfaces of the clamping pins (33), the shape of the clamping groove (35) is matched with the shape of the other end of the clamping pin (33).
2. The separable hydraulic cylinder double-acting energy feeding system according to claim 1, further comprising a base plate (8), wherein a motor base (14) is fixed on the base plate (8), a motor (15) is fixed on the upper end face of the motor base (14), a base plate sliding groove (9) is arranged on the base plate (8), the base plate sliding groove (9) is respectively arranged on the left side and the right side of the motor base (14), sliding bases (10) are slidingly connected on the base plate sliding groove (9), an oil pump (18) and an oil motor (11) are respectively fixed on the two sliding bases (10), separating oil cylinders (13) are respectively fixed on the left side surface and the right side surface of the motor base (14), and the two sliding bases (10) are respectively fixedly connected with piston rods of the two separating oil cylinders (13).
3. The separable hydraulic cylinder double-acting energy feed system as claimed in claim 1, wherein a side cavity (45) matched with the side sliding groove (31) is arranged in the second rotating shaft (16), the side cavity (45) is arranged on the side surface of the side sliding groove (31) and all side sliding grooves (31) and all side cavities (45) are positioned in the same plane, a through groove (39) and a through hole (43) are arranged between the side sliding groove (31) and the side cavities (45), a top block (37) is arranged in the side sliding groove (31), one surface of the top block (37) is fixedly connected with the other end of the spring (32), a guide inclined surface I (38) and a guide inclined surface II (36) matched with each other are respectively arranged between the other surface of the top block (37) and the end surface of one end of the clamping pin (33), a pressing rod I (40) matched with the through groove (39) is fixed on the top block (37), a pressing rod I (40) penetrates through the through groove (39) and is arranged in the side cavity (45) and is connected with the through groove (39), a pressing rod II (44) matched with the clamping pin (33) is arranged on the end of the clamping pin (33), one end of a second compression bar (44) is installed on an axial sliding groove (46) and is in sliding connection with the second compression bar, the other end of the second compression bar (44) penetrates through a through hole (43) to be placed in a side cavity (45) and is in sliding connection with the through hole (43), a torsion spring seat (42) is fixed in the side cavity (45), a swing rod (41) is installed on the torsion spring seat (42), the first compression bar (40) and the second compression bar (44) are all placed on the same side of the swing rod (41) and are respectively located at two ends of the swing rod (41), and the first compression bar (40) and the second compression bar (44) are all in contact with the swing rod (41).
4. The separable hydraulic cylinder double-acting energy feeding system according to claim 1, further comprising an energy feeding valve I (27), an energy feeding valve II (24) and a safety valve (4), wherein the oil feeding pipe I (28) and the oil return pipe I (26) are both arranged on the energy feeding valve I (27), the oil feeding pipe II (25) and the oil return pipe II (23) are both arranged on the energy feeding valve II (24), the oil tank (7) and the pipeline interface II (3) are also communicated through an oil feeding pipe III (5), the pipeline interface I (2) and the oil tank (7) are also communicated through an oil return pipe III (6), and the oil feeding pipe III (5) and the oil return pipe III (6) are both arranged on the safety valve (4).
5. The separable hydraulic cylinder double-acting energy feeding system according to claim 1, further comprising a frequency converter (20), an LCL circuit (22), a three-phase power grid (21) and an AFE (19), wherein the motor (15) is provided with a wire connector, the frequency converter (20), the LCL circuit (22) and the three-phase power grid (21) are sequentially connected in series, and the frequency converter (20) and the AFE (19) are connected in parallel.
6. A separable hydraulic cylinder double-acting energy feed system according to claim 1, characterized in that the motor (15) is of the permanent magnet synchronous motor type.
7. The method for feeding energy of a separable hydraulic cylinder double-acting energy feeding system according to claim 1, comprising the steps of:
when the hydraulic cylinder (1) needs to ascend, controlling a second rotating shaft (16) on the motor (15) to be connected with a third rotating shaft (17) on the oil pump (18) and separated from a first rotating shaft (12) on the oil motor (11), then pumping pressure oil into the hydraulic cylinder (1) from an oil tank (7) through a second oil supply pipe (25) by the oil pump (18), and driving the second rotating shaft (16) on the motor (15) to synchronously rotate when the third rotating shaft (17) on the oil pump (18) rotates so as to enable the motor (15) to work as a motor;
when the hydraulic cylinder (1) needs to fall, a second rotating shaft (16) on the control motor (15) is connected with a first rotating shaft (12) on the oil motor (11) and separated from a third rotating shaft (17) on the oil pump (18), and when pressure oil in the hydraulic cylinder (1) falls back to the oil tank (7) through the oil motor (11) under the action of gravity and external load, the first rotating shaft (12) on the oil motor (11) is pushed to rotate, so that the second rotating shaft (16) on the motor (15) is driven to synchronously rotate, and the motor (15) is used as a generator to start generating electricity.
8. The energy feeding method of the separable hydraulic cylinder double-acting energy feeding system according to claim 7, wherein in the second step, the current generated by the motor (15) is converted into electric energy of three phases 380V and 50HZ through the treatment of the frequency converter (20), the AFE (19) and the LCL circuit (22), and the electric energy is transmitted back to the three-phase power grid (21).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570346A (en) * | 2004-05-09 | 2005-01-26 | 浙江大学 | Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology |
| CN1683797A (en) * | 2005-03-15 | 2005-10-19 | 浙江大学 | Double pump-motor hydraulic driving system for lifting oil cylinder of engineering machine |
| CN103671306A (en) * | 2013-11-21 | 2014-03-26 | 中国石油化工股份有限公司 | Hydraulic power device and potential energy converting and operating methods thereof |
| CN108194437A (en) * | 2018-02-28 | 2018-06-22 | 福建工程学院 | A kind of potential energy recycling and the pump hydraulic energy conserving system of electric machine speed regulation |
| CN108591144A (en) * | 2018-07-02 | 2018-09-28 | 福建工程学院 | The distributed direct of the double accumulators of the double constant displacement pumps of motor driving drives excavator hydraulic system |
| CN211816932U (en) * | 2020-01-13 | 2020-10-30 | 济宁一建钢结构工程有限公司 | Detachable assembly type building steel structure |
-
2021
- 2021-11-09 CN CN202111317610.0A patent/CN114233699B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570346A (en) * | 2004-05-09 | 2005-01-26 | 浙江大学 | Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology |
| CN1683797A (en) * | 2005-03-15 | 2005-10-19 | 浙江大学 | Double pump-motor hydraulic driving system for lifting oil cylinder of engineering machine |
| CN103671306A (en) * | 2013-11-21 | 2014-03-26 | 中国石油化工股份有限公司 | Hydraulic power device and potential energy converting and operating methods thereof |
| CN108194437A (en) * | 2018-02-28 | 2018-06-22 | 福建工程学院 | A kind of potential energy recycling and the pump hydraulic energy conserving system of electric machine speed regulation |
| CN108591144A (en) * | 2018-07-02 | 2018-09-28 | 福建工程学院 | The distributed direct of the double accumulators of the double constant displacement pumps of motor driving drives excavator hydraulic system |
| CN211816932U (en) * | 2020-01-13 | 2020-10-30 | 济宁一建钢结构工程有限公司 | Detachable assembly type building steel structure |
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Address after: No. 29 Xiacheng Road, Tonglu County, Hangzhou City, Zhejiang Province, 311599 Patentee after: Hangzhou Baoxie Electromechanical Technology Co.,Ltd. Country or region after: China Address before: 311500 No. 29, Xiacheng Road, Tonglu County, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Baoxie Electromechanical Technology Co.,Ltd. Country or region before: China |