CN216589339U - Two-way hydraulic cylinder double-acting energy feedback structure - Google Patents
Two-way hydraulic cylinder double-acting energy feedback structure Download PDFInfo
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- CN216589339U CN216589339U CN202122777414.3U CN202122777414U CN216589339U CN 216589339 U CN216589339 U CN 216589339U CN 202122777414 U CN202122777414 U CN 202122777414U CN 216589339 U CN216589339 U CN 216589339U
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 40
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005381 potential energy Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 129
- 230000001502 supplementing effect Effects 0.000 description 13
- 239000002699 waste material Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a bidirectional double-acting energy feedback structure of a hydraulic cylinder, and aims to provide a bidirectional double-acting energy feedback structure of the hydraulic cylinder, which can convert potential energy of hydraulic return oil into electric energy. The hydraulic cylinder comprises a hydraulic cylinder, a bidirectional oil pump motor, an oil tank and a motor, wherein a first pipeline interface and a second pipeline interface are respectively arranged at the top of the hydraulic cylinder and the bottom of the hydraulic cylinder, the first pipeline interface and the second pipeline interface are respectively communicated through oil pipes between the second pipeline interface and the bidirectional oil pump motor, between the bidirectional oil pump motor and the oil tank and between the oil tank and the first pipeline interface, a first rotating shaft and a second rotating shaft are respectively arranged on the motor and the bidirectional oil pump motor, and the first rotating shaft and the second rotating shaft are detachably connected through a coupler. The beneficial effects of the utility model are: the potential energy of the hydraulic return oil can be converted into electric energy; the structure is simple, and the implementation is convenient; a bypass safety valve is additionally arranged, so that once the feed system fails, the bypass loop can be automatically switched in, and the normal production of equipment is not influenced; the feedback electric energy has high quality, no distortion and good feed effect.
Description
Technical Field
The utility model relates to the related technical field of hydraulic cylinders, in particular to a bidirectional double-acting energy feedback structure of a hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary. The hydraulic cylinder has three types, namely a piston cylinder, a plunger cylinder and a swing cylinder, wherein the piston cylinder and the plunger cylinder realize reciprocating linear motion and output speed and thrust, and the swing cylinder realizes reciprocating swing and outputs angular speed (rotating speed) and torque.
The dead weight and the external load can form great potential energy when the existing vertical installation type hydraulic cylinder falls, and the conventional oil way is a direct oil return tank, so that energy waste is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bidirectional hydraulic cylinder double-acting energy feedback structure capable of converting potential energy of hydraulic oil return into electric energy, and aims to overcome the defect that energy is wasted due to the fact that pressure oil in a hydraulic cylinder directly returns to an oil tank when a piston in a vertically-mounted hydraulic cylinder falls down in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a two-way pneumatic cylinder two effects present ability structure, includes pneumatic cylinder, two-way oil pump motor, oil tank and motor, the top of pneumatic cylinder and the bottom of pneumatic cylinder are equipped with pipeline interface one and pipeline interface two respectively, all be linked together through oil pipe between pipeline interface two and the two-way oil pump motor, between two-way oil pump motor and the oil tank, between oil tank and the pipeline interface one, be equipped with pivot one and pivot two on the motor and on the two-way oil pump motor respectively, pivot one and pivot two pass through the shaft coupling and can dismantle the connection.
The hydraulic cylinder is a vertically-mounted hydraulic cylinder. The hydraulic cylinder is arranged above the bidirectional oil pump motor, and the bidirectional oil pump motor is arranged above the oil tank. The motor and the bidirectional oil pump motor are bidirectional: when the motor is used as a motor, the bidirectional oil pump motor is used as an oil pump, the rotating shaft I on the motor is controlled to rotate forwards to drive the rotating shaft II on the oil pump to rotate forwards synchronously, oil is pumped into the hydraulic cylinder from the oil tank, and a piston rod on the hydraulic cylinder moves upwards; when the motor is used as a generator, the bidirectional oil pump motor is used as an oil motor, when pressure oil at the bottom of the hydraulic cylinder falls back to an oil tank through the oil motor under the action of gravity and external load, the pressure oil can push a second rotating shaft on the oil motor to rotate reversely to drive a first rotating shaft on the generator to rotate reversely synchronously, so that the generator starts to generate electricity, the aim of converting potential energy of hydraulic return oil into electric energy can be well achieved through the design, and the waste of resources is reduced. Simple structure and convenient implementation.
Preferably, a cylindrical cavity is arranged in the bidirectional oil pump motor, one end of a second rotating shaft is arranged on the right end wall of the cylindrical cavity, the other end of the second rotating shaft penetrates through the left end wall of the cylindrical cavity and is fixedly connected with the first rotating shaft, the second rotating shaft is rotatably connected with the bidirectional oil pump motor, the axle center of the second rotating shaft and the axle center of the cylindrical cavity are parallel to each other and are positioned on the same horizontal plane, the axle center of the second rotating shaft and the axle center of the cylindrical cavity are staggered, a disc is sleeved on the second rotating shaft and is fixedly connected with the second rotating shaft, the disc is arranged in the cylindrical cavity and is rotatably connected with the cylindrical cavity, the diameter of the disc is smaller than that of the cylindrical cavity, the height of the disc is equal to that of the cylindrical cavity, the outer side wall of the disc is in contact with the inner side wall of the cylindrical cavity, and a plurality of vane grooves are arranged on the outer side wall of the disc, the blade groove is annular evenly distributed about pivot two, sliding connection has the blade in the blade groove, the width of blade equals the height of cylindrical cavity, be connected through compression spring between the one end of blade and the bottom surface in blade groove, the other end of blade and cylindrical cavity's inside wall contact, cylindrical cavity's top and cylindrical cavity's bottom are equipped with upper shed and under shed respectively, all be connected through oil pipe between pipeline interface two and the upper shed, between under shed and the oil tank. The blade is pressed on the outer side wall of the cylindrical cavity all the time under the elastic force action of the compression spring, and the area between the inner side wall of the cylindrical cavity and the outer side wall of the disc is divided into a plurality of sealed working cavities by the blade. When the motor is used as a motor to drive the second rotating shaft and the disc on the second rotating shaft to rotate positively, the volume of the sealed working cavity at the lower opening is gradually increased, so that vacuum is generated, pressure oil in the oil tank is sucked in through the oil pipe, the volume of the sealed working cavity at the upper opening is gradually reduced, the pressure oil in the sealed working cavity is discharged to the upper opening, and the pressure oil is pumped into the hydraulic cylinder through the oil pipe. When pressure oil at the bottom of the hydraulic cylinder enters the sealed working cavity at the upper opening under the action of gravity and external load, due to the fact that the stress areas of the blades on the two sides are different, the torque formed by the stress difference of the blades pushes the disc (the second rotating shaft) to start to rotate reversely, the first rotating shaft on the motor is driven to rotate reversely synchronously, the motor serves as a generator to generate electricity at the moment, the purpose of converting potential energy of hydraulic return oil into electric energy is well achieved, and waste of resources is reduced.
Preferably, the fuel tank further comprises a control valve, wherein a first cavity is arranged on the left side and the right side of the interior of the control valve, an upper through hole and a lower through hole are respectively arranged on the top surface of the first cavity and the bottom surface of the first cavity, the lower through hole and the upper opening of the first cavity on the left side are communicated through a fixed pipe, the upper through hole of the first cavity on the left side and the upper opening of the first cavity on the right side are communicated through oil pipes, the upper through hole of the first cavity on the right side and the upper through hole of the second pipeline interface, the lower through hole of the first cavity on the right side and the lower through hole of the first pipeline interface are communicated through oil pipes, a left guide plate and a right guide plate are respectively fixed in the first cavity on the left side and the right cavity, a left guide through hole and a right guide through hole are respectively arranged on the left guide plate and the right guide plate, a left slide rod and a right slide rod are respectively connected in the left guide through hole and the right guide through hole in a sliding manner, a left valve core and a right valve core are respectively fixed at the bottom end of the left slide rod and the top end of the right slide rod, and the left valve core are matched with the lower through hole of the first cavity, the left slide bar and the right slide bar are respectively connected with the right guide plate and the right valve core, a linkage assembly is arranged inside the control valve, the left slide bar and the right slide bar are both connected with the linkage assembly, a switch assembly is arranged in the fixed pipe, and the switch assembly is connected with the left valve core. The hydraulic cylinder is arranged above the control valve, and the control valve is arranged above the bidirectional oil pump motor. In a natural state, the left valve core is pressed at the lower through hole of the left cavity I under the action of the elastic force of the left spring, the right valve core is pressed at the upper through hole of the right cavity I under the action of the elastic force of the right spring, and the control valve is in a closed state at the moment. When the bidirectional oil pump motor is used as an oil pump, pressure oil can automatically jack the left valve core from the lower through hole of the left cavity I under the pressure action of the oil pump (the right valve core is also opened simultaneously under the action of the linkage assembly), the control valve is in an automatic opening state at the moment, the pressure oil in the oil tank can be smoothly pumped into the hydraulic cylinder through the pipeline interface II, and a piston rod in the hydraulic cylinder is driven to move upwards. When a piston rod in the hydraulic cylinder needs to move downwards, the left valve core is jacked open from a lower through hole of the left cavity I through the switch assembly, (the right valve core is also opened simultaneously under the action of the linkage assembly), the control valve is in a passive opening state at the moment, pressure oil can also smoothly flow back to an oil tank through the oil motor through the pipeline interface II under the action of gravity and external load, and meanwhile, the bidirectional oil pump motor is used as the oil motor to drive the motor to generate electricity.
Preferably, the linkage assembly comprises a second cavity arranged in the control valve, the second cavity is positioned between the first cavities, a left connecting through hole and a right connecting through hole are respectively arranged between the first cavity of the second cavity and the first cavity of the right side, a left movable rod and a right movable rod are respectively connected in the left connecting through hole and the right connecting through hole in a sliding manner, the left movable rod is arranged above the left sliding rod, the left end of the left movable rod is arranged in the first cavity of the left side and positioned at the right side of the left sliding rod, a left transmission rod is arranged between the left movable rod and the left sliding rod, the left end of the left movable rod and the top end of the left sliding rod are respectively hinged with two ends of the left transmission rod, the right movable rod is arranged below the right sliding rod, the right end of the right movable rod is arranged in the first cavity of the right side and positioned at the left side of the right sliding rod, a right transmission rod is arranged between the right movable rod and the right sliding rod, the right-hand member of right side movable rod and the bottom of right slide bar are articulated mutually with the both ends of right transfer line respectively, install the gear in the cavity two, the right-hand member of left side movable rod is arranged in the cavity two and is fixed with rack one on it, the left end of right side movable rod is arranged in the cavity two and is fixed with rack two on it, rack one and rack two are arranged in the upper and lower both sides of gear respectively and all are engaged with the gear mutually, be connected through reset spring one between the right side wall of rack one and cavity two, be connected through reset spring two between the left side wall of rack two and cavity two. An acute angle formed between the left sliding rod and the left transmission rod is always larger than 45 degrees; the acute angle formed between the right slide bar and the right transmission rod is always smaller than 45 degrees. When the left valve core is jacked open, the left sliding rod moves upwards at the moment, the left movable rod (the first rack) is driven to move rightwards under the transmission action of the left transmission rod, the gear rotates, the right movable rod (the second rack) is driven to move leftwards, and then the right sliding rod is driven to move downwards under the transmission action of the right transmission rod, so that the right valve core leaves the upper through hole of the first right cavity, and the purpose of opening the right valve core is achieved. Wherein the first reset spring and the second reset spring respectively play the reset role of the left movable rod and the right movable rod.
Preferably, the switch assembly comprises a torsion spring seat, the torsion spring seat is respectively fixed on the inner side walls of the two opposite sides of the fixed pipe, a rotating plate is arranged on the torsion spring seat, one side of the rotating plate is installed on the torsion spring seat and is rotationally connected with the torsion spring seat, the other side of the rotating plate is hinged with an electromagnet, the torsion spring seat and the electromagnet are located in the same vertical plane, a baffle matched with the electromagnet is fixed on the inner side wall of the fixed pipe, the baffle is arranged below the electromagnet, a connecting rod is arranged at the bottom of the left valve core, a lower through hole penetrating through the left cavity I of the connecting rod is arranged inside the fixed pipe, one end of the connecting rod is fixedly connected with the left valve core, the other end of the connecting rod is provided with an oblique rod matched with the rotating plate, one end of the oblique rod is fixedly connected with the connecting rod, and an obtuse angle is formed between the two ends of the oblique rod and the connecting rod, the other end of the diagonal rod is positioned on the side surface of the rotating plate and faces the rotating plate. Wherein the fixed pipe is square pipe, and the width of rotor plate and the interior width phase-match of fixed pipe. Under the natural state, the rotating plate and the electromagnet are attached to the inner side wall of the fixed pipe under the action of the torsion spring seat; when the control valve is passively opened, the two electromagnets can be electrified simultaneously, the electromagnets are enabled to generate opposite magnetic fields, the two electromagnets are close to each other under the action of magnetic force, the rotating plates on the two sides are driven to rotate, the inclined rods and the connecting rods are jacked upwards, and then the left valve core is jacked open from the lower through hole of the left cavity I, the purpose of opening the control valve is achieved, and at the moment, due to the fact that the rotating plates on the two sides are folded, the channel inside the fixed pipe is made to be small, pressure oil flows to the oil motor from the fixed pipe, the driving force to the blades is increased along with the increase, and the power generation efficiency of the motor is improved. When the control valve is automatically opened, the baffle plate plays a role in blocking pressure oil, and the rotating plate is prevented from rotating under the impact of the pressure oil.
Preferably, the oil-gas separator further comprises a safety valve and an oil supplementing valve, the pipeline interface I is communicated with the oil tank, the pipeline interface II is communicated with the oil tank through a safety oil pipe I and a safety oil pipe II, the safety oil pipe I and the safety oil pipe II are both installed on the safety valve, a side through hole is formed in the side wall of the fixed pipe and located above the torsion spring seat, the pipeline interface I is communicated with the oil tank, the pipeline interface II is communicated with the side through hole through a oil supplementing pipe I and a oil supplementing pipe II, and the oil supplementing pipe I and the oil supplementing pipe II are both installed on the oil supplementing valve. The safety valve plays a role in controlling the opening and closing and the flow rate of the first safety oil pipe and the second safety oil pipe; the oil supplementing valve plays a role in controlling the opening and closing and the flow rate of the oil supplementing pipe I and the oil supplementing pipe II. By additionally arranging the bypass safety valve, once the feed system fails, the bypass loop can be automatically switched in, and the normal production of equipment is not influenced; through addding the oil supplementing valve, in case the pressure of falling back of pneumatic cylinder is not enough, accessible oil supplementing loop mends oil to pipeline interface one, guarantees that the pneumatic cylinder can normally fall back.
Preferably, the motor further comprises a four-quadrant servo driver, an LCL circuit and a three-phase power grid, wherein a wire connector is arranged on the motor, and the wire connector, the four-quadrant servo driver, the LCL circuit and the three-phase power grid are sequentially connected in series. When the motor is used as a motor, the three-phase power grid can supply power to the motor and provide electric energy for the motor; when the motor is used as a generator, the generated current can be converted into three-phase 380V and 50HZ electric energy through the processing of the four-quadrant servo driver and the LCL circuit, and the three-phase 380V and 50HZ electric energy is transmitted back to a power grid, so that the waste of resources is reduced. The four-quadrant servo driver is adopted, so that the feedback electric energy quality is high, the distortion is avoided, and the feed effect is good.
Preferably, the motor is of the type a permanent magnet synchronous motor. The feed effect is good, and the efficiency can reach 92%.
The utility model has the beneficial effects that: the potential energy of hydraulic return oil can be converted into electric energy, so that the waste of resources is reduced; the structure is simple, and the implementation is convenient; the power generation efficiency of the motor is improved; a bypass safety valve is additionally arranged, so that once the feed system fails, the bypass loop can be automatically switched in, and the normal production of equipment is not influenced; an oil supplementing valve is additionally arranged, so that once the falling pressure of the hydraulic cylinder is insufficient, oil can be supplemented to a first pipeline interface through an oil supplementing loop, and the hydraulic cylinder can normally fall back; the feedback electric energy has high quality, no distortion and good feed effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the connection between the electric motor, the bi-directional oil pump motor and the control valve of FIG. 1;
FIG. 3 is a schematic view of the internal structure of FIG. 2;
FIG. 4 is a schematic diagram of the structure at the control valve of FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 3 at the location of the fixed tube;
FIG. 6 is a schematic view of the structure at the bi-directional oil pump motor of FIG. 3;
fig. 7 is another internal structural view of the bi-directional oil pump motor of fig. 2.
In the figure: 1. three-phase electric network, 2, LCL circuit, 3, four-quadrant servo driver, 4, motor, 5, wire connector, 6, rotating shaft I, 7, rotating shaft II, 8, two-way oil pump motor, 9, control valve, 10, oil tank, 11, safety valve, 12, oil supply valve, 13, pipeline connector II, 14, pipeline connector I, 15, hydraulic cylinder, 16, upper through hole, 17, cavity I, 18, lower through hole, 19, fixed pipe, 20, lower opening, 21, cylindrical chamber, 22, upper opening, 23, left slide bar, 24, left guide plate, 25, left guide through hole, 26, left spring, 27, left valve core, 28, connecting rod, 29, return spring II, 30, rack II, 31, cavity II, 32, right connecting through hole, 33, right movable rod, 34, 35. the hydraulic cylinder comprises a right sliding rod, 36, a right guide plate, 37, a right guide through hole, 38, a right spring, 39, a right valve core, 40, a first return spring, 41, a gear, 42, a first rack, 43, a left connecting through hole, 44, a left movable rod, 45, a left transmission rod, 46, a torsion spring seat, 47, a diagonal rod, 48, a rotating plate, 49, an electromagnet, 50, a baffle, 51, a side through hole, 52, a disc, 53, a blade, 54, a blade groove and 55, and a compression spring.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a bidirectional double-acting energy feedback structure of a hydraulic cylinder comprises a hydraulic cylinder 15, a bidirectional oil pump motor 8, an oil tank 10 and a motor 4, wherein a first pipeline connector 14 and a second pipeline connector 13 are respectively arranged at the top of the hydraulic cylinder 15 and the bottom of the hydraulic cylinder 15, the first pipeline connector 13 is communicated with the bidirectional oil pump motor 8, the bidirectional oil pump motor 8 is communicated with the oil tank 10, the oil tank 10 is communicated with the first pipeline connector 14 through oil pipes, a first rotating shaft 6 and a second rotating shaft 7 are respectively arranged on the motor 4 and the bidirectional oil pump motor 8, and the first rotating shaft 6 and the second rotating shaft 7 are detachably connected through a coupler.
As shown in fig. 2 and 3, a cylindrical chamber 21 is arranged inside the bidirectional oil pump motor 8, one end of a second rotating shaft 7 is installed on the right end wall of the cylindrical chamber 21, the other end of the second rotating shaft 7 penetrates through the left end wall of the cylindrical chamber 21 and is fixedly connected with a first rotating shaft 6, the second rotating shaft 7 is rotatably connected with the bidirectional oil pump motor 8, as shown in fig. 6 and 7, the axis of the second rotating shaft 7 and the axis of the cylindrical chamber 21 are parallel to each other and are positioned on the same horizontal plane, the axis of the second rotating shaft 7 and the axis of the cylindrical chamber 21 are arranged in a staggered manner, a disk 52 is sleeved on the second rotating shaft 7, the disk 52 is fixedly connected with the second rotating shaft 7, the disk 52 is placed in the cylindrical chamber 21 and is rotatably connected with the cylindrical chamber 21, the diameter of the disk 52 is smaller than the diameter of the cylindrical chamber 21, the height of the disk 52 is equal to the height of the cylindrical chamber 21, the outer side wall of the disk 52 is in contact with the inner side wall of the cylindrical chamber 21, the outer side wall of the disc 52 is provided with a plurality of blade grooves 54, the blade grooves 54 are uniformly distributed in an annular shape relative to the second rotating shaft 7, blades 53 are connected in the blade grooves 54 in a sliding mode, the width of each blade 53 is equal to the height of the cylindrical chamber 21, one ends of the blades 53 are connected with the bottom surface of the blade grooves 54 through compression springs 55, the other ends of the blades 53 are in contact with the inner side wall of the cylindrical chamber 21, as shown in fig. 1 and 7, the top of the cylindrical chamber 21 and the bottom of the cylindrical chamber 21 are respectively provided with an upper opening 22 and a lower opening 20, and the second pipeline connector 13 is connected with the upper opening 22 and the lower opening 20 is connected with the oil tank 10 through oil pipes.
As shown in fig. 2 and 3, the fuel tank further comprises a control valve 9, the left side and the right side of the inside of the control valve 9 are respectively provided with a first cavity 17, the top surface of the first cavity 17 and the bottom surface of the first cavity 17 are respectively provided with an upper through hole 16 and a lower through hole 18, the lower through hole 18 of the first cavity 17 on the left side is communicated with the upper opening 22 through a fixed pipe 19, as shown in fig. 1 and 3, the upper through hole 16 of the first cavity 17 on the left side is communicated with the second pipeline connector 13, the upper through hole 16 of the first cavity 17 on the right side is communicated with the first pipeline connector 14, and the lower through hole 18 of the first cavity 17 on the right side is communicated with the fuel tank 10 through a fuel pipe, as shown in fig. 4, a left guide plate 24 and a right guide plate 36 are respectively fixed in the first cavity 17 on the left side and the right side, the left guide plate 24 and the right guide plate 36 are respectively provided with a left guide through hole 25 and a right guide through hole 37, and a left slide rod 23 and a right slide rod 35 are respectively connected in the left guide through hole 25 and the right guide through hole 37, a left valve core 27 and a right valve core 39 are respectively fixed at the bottom end of the left sliding rod 23 and the top end of the right sliding rod 35, the left valve core 27 is matched with a lower through hole 18 of the left cavity I17, the right valve core 39 is matched with an upper through hole 16 of the right cavity I17, a left spring 26 and a right spring 38 are respectively sleeved on the left sliding rod 23 and the right sliding rod 35, two ends of the left spring 26 are respectively connected with the left guide plate 24 and the left valve core 27, two ends of the right spring 38 are respectively connected with the right guide plate 36 and the right valve core 39, a linkage assembly is arranged inside the control valve 9, the left sliding rod 23 and the right sliding rod 35 are both connected with the linkage assembly, a switch assembly is arranged in the fixed pipe 19, and the switch assembly is connected with the left valve core 27.
As shown in fig. 4, the linkage assembly includes a second cavity 31 disposed inside the control valve 9, the second cavity 31 is located between the first cavities 17, a left connecting through hole 43 and a right connecting through hole 32 are respectively disposed between a left side wall of the second cavity 31 and the first cavity 17 on the left side and between a right side wall of the second cavity 31 and the first cavity 17 on the right side, a left movable rod 44 and a right movable rod 33 are respectively slidably connected in the left connecting through hole 43 and the right connecting through hole 32, the left movable rod 44 is disposed above the left sliding rod 23, a left end of the left movable rod 44 is disposed in the first cavity 17 on the left side and is located on the right side of the left sliding rod 23, a left transmission rod 45 is disposed between the left movable rod 44 and the left sliding rod 23, a left end of the left movable rod 44 and a top end of the left sliding rod 23 are respectively hinged to two ends of the left transmission rod 45, the right movable rod 33 is disposed below the right sliding rod 35, a right end of the right movable rod 33 is disposed in the first cavity 17 on the right side and is located on the left side of the right sliding rod 35, a right transmission rod 34 is arranged between the right movable rod 33 and the right sliding rod 35, the right end of the right movable rod 33 and the bottom end of the right sliding rod 35 are hinged to two ends of the right transmission rod 34 respectively, a gear 41 is installed in the cavity II 31, the right end of the left movable rod 44 is arranged in the cavity II 31 and is fixedly provided with a rack I42, the left end of the right movable rod 33 is arranged in the cavity II 31 and is fixedly provided with a rack II 30, the rack I42 and the rack II 30 are arranged on the upper side and the lower side of the gear 41 respectively and are meshed with the gear 41, the rack I42 is connected with the right side wall of the cavity II 31 through a return spring I40, and the rack II 30 is connected with the left side wall of the cavity II 31 through a return spring II 29.
As shown in fig. 5, the switch assembly includes a torsion spring seat 46, the torsion spring seats 46 are respectively fixed on the inner side walls of the two opposite sides of the fixed pipe 19, the torsion spring seat 46 is provided with a rotating plate 48, one side of the rotating plate 48 is installed on the torsion spring seat 46 and is rotatably connected with the same, the other side of the rotating plate 48 is hinged with an electromagnet 49, the torsion spring seat 46 and the electromagnet 49 are located in the same vertical plane, the inner side wall of the fixed pipe 19 is fixed with a baffle 50 matched with the electromagnet 49, the baffle 50 is located below the electromagnet 49, the bottom of the left valve core 27 is provided with a connecting rod 28, the connecting rod 28 penetrates through the lower through hole 18 of the left cavity one 17 and is located inside the fixed pipe 19, one end of the connecting rod 28 is fixedly connected with the left valve core 27, the other end of the connecting rod 28 is provided with an inclined rod 47 matched with the rotating plate 48, one end of the inclined rod 47 is fixedly connected with the connecting rod 28 and forms an obtuse angle therebetween, the other end of the diagonal rod 47 is located at the side of the rotating plate 48 and faces the rotating plate 48.
As shown in fig. 1, the anti-theft oil-leakage protection device further comprises a safety valve 11 and an oil-supplementing valve 12, the first pipeline connector 14 is communicated with the oil tank 10, the second pipeline connector 13 is communicated with the oil tank 10 through the first safety oil pipe and the second safety oil pipe, the first safety oil pipe and the second safety oil pipe are both installed on the safety valve 11, a side through hole 51 is formed in the side wall of the fixing pipe 19, the side through hole 51 is located above the torsion spring seat 46, the first pipeline connector 14 is communicated with the oil tank 10, the second pipeline connector 13 is communicated with the second side through the first oil-supplementing pipe, and the first oil-supplementing pipe and the second oil-supplementing pipe are both installed on the oil-supplementing valve 12.
As shown in fig. 1, the three-phase power grid system further comprises a four-quadrant servo driver 3, an LCL circuit 2 and a three-phase power grid 1, wherein a wire connector 5 is arranged on a motor 4, and the wire connector 5, the four-quadrant servo driver 3, the LCL circuit 2 and the three-phase power grid 1 are sequentially connected in series.
The motor 4 is of the permanent magnet synchronous type.
Firstly, the ascending principle of the hydraulic cylinder 15:
the electric motor 4 functions as an electric motor, and the bidirectional oil pump motor 8 functions as an oil pump.
The three-phase power grid 1 supplies power to the motor 4, the first rotating shaft 6 on the motor 4 is controlled to rotate forwards to drive the second rotating shaft 7 on the bidirectional oil pump motor 8 and the disc 52 on the bidirectional oil pump motor to rotate forwards synchronously, the volume of the sealed working cavity at the lower opening 20 is gradually increased to generate negative pressure vacuum, pressure oil in the oil tank 10 is sucked in through the oil pipe, the volume of the sealed working cavity at the upper opening 22 is gradually reduced to discharge the pressure oil in the sealed working cavity to the upper opening 22, and the pressure oil is pumped to the control valve 9 through the fixing pipe 19.
The pressure oil automatically jacks the left valve core 27 from the lower through hole 18 of the left cavity I17 under the pressure action of the bidirectional oil pump motor 8, when the left valve core 27 is pushed, the left sliding rod 23 moves upwards at the moment, the left movable rod 44 (the rack I42) is driven to move rightwards under the transmission action of the left transmission rod 45, the gear 41 rotates, the right movable rod 33 (the rack II 30) is driven to move leftwards, the right sliding rod 35 is driven to move downwards under the transmission action of the right transmission rod 34, the right valve core 39 simultaneously leaves the upper through hole 16 of the right cavity I17, the control valve 9 is in an automatic opening state at the moment, the pressure oil in the oil tank 10 can be smoothly pumped into the hydraulic cylinder 15 through the pipeline connector II 13, and the piston rod on the hydraulic cylinder 15 is driven to move upwards.
Secondly, the descending principle of the hydraulic cylinder 15:
the electric machine 4 functions as a generator, and the bidirectional oil pump motor 8 functions as an oil motor.
The two electromagnets 49 are simultaneously electrified to generate opposite magnetic fields, at this time, the two electromagnets 49 approach each other under the action of magnetic force to drive the rotating plates 48 on the two sides to rotate, the inclined rod 47 and the connecting rod 28 are jacked upwards, and the left valve core 27 is jacked open from the lower through hole 18 of the left cavity one 17 (meanwhile, the right valve core 39 also leaves the upper through hole 16 of the right cavity one 17), at this time, the control valve 9 is in a passive open state, and pressure oil at the bottom of the hydraulic cylinder 15 falls back into the oil tank 10 through the control valve 9 and the bidirectional oil pump motor 8 under the action of gravity and external load.
When pressure oil enters a sealed working cavity at the upper opening 22 of the bidirectional oil pump motor 8 through the fixed pipe 19, due to the fact that the stress areas of the blades 53 on the two sides are different, the disc 52 (the second rotating shaft 7) is pushed to rotate reversely by torque formed by the stress differences of the blades 53, the first rotating shaft 6 on the motor 4 is driven to rotate reversely synchronously, the motor 4 starts to generate electricity, and the generated current can be converted into three-phase electric energy of 380V and 50HZ through the processing of the four-quadrant servo driver 3 and the LCL circuit 2 and then is transmitted back to the three-phase power grid 1.
Claims (8)
1. The utility model provides a two-way pneumatic cylinder two effects present ability structure, characterized by, includes pneumatic cylinder (15), two-way oil pump motor (8), oil tank (10) and motor (4), the top of pneumatic cylinder (15) and the bottom of pneumatic cylinder (15) are equipped with pipeline interface one (14) and pipeline interface two (13) respectively, all be linked together through oil pipe between pipeline interface two (13) and two-way oil pump motor (8), between two-way oil pump motor (8) and oil tank (10), between oil tank (10) and pipeline interface one (14), be equipped with pivot one (6) and pivot two (7) on motor (4) and two-way oil pump motor (8) respectively, pivot one (6) and pivot two (7) can dismantle the connection through the shaft coupling.
2. The double-acting energy feedback structure of the bidirectional hydraulic cylinder as claimed in claim 1, wherein a cylindrical chamber (21) is provided inside the bidirectional oil pump motor (8), one end of the second rotating shaft (7) is mounted on the right end wall of the cylindrical chamber (21), the other end of the second rotating shaft (7) penetrates through the left end wall of the cylindrical chamber (21) and is fixedly connected with the first rotating shaft (6), the second rotating shaft (7) is rotatably connected with the bidirectional oil pump motor (8), the axis of the second rotating shaft (7) and the axis of the cylindrical chamber (21) are parallel to each other and are located on the same horizontal plane, the axis of the second rotating shaft (7) and the axis of the cylindrical chamber (21) are arranged in a staggered manner, a disc (52) is sleeved on the second rotating shaft (7), the disc (52) is fixedly connected with the second rotating shaft (7), the disc (52) is placed in the cylindrical chamber (21) and is rotatably connected with the cylindrical chamber, the diameter of the disc (52) is smaller than that of the cylindrical chamber (21), the height of the disc (52) is equal to that of the cylindrical chamber (21), the outer side wall of the disc (52) is in contact with the inner side wall of the cylindrical chamber (21), a plurality of blade grooves (54) are formed in the outer side wall of the disc (52), the blade grooves (54) are uniformly distributed in an annular mode relative to the second rotating shaft (7), blades (53) are connected in the blade grooves (54) in a sliding mode, the width of each blade (53) is equal to that of the cylindrical chamber (21), one ends of the blades (53) are connected with the bottom surface of each blade groove (54) through compression springs (55), the other ends of the blades (53) are in contact with the inner side wall of the cylindrical chamber (21), and the top of the cylindrical chamber (21) and the bottom of the cylindrical chamber (21) are respectively provided with an upper opening (22) and a lower opening (20), and the second pipeline connector (13) is connected with the upper opening (22), and the lower opening (20) is connected with the oil tank (10) through oil pipes.
3. The double-acting energy feedback structure of the bidirectional hydraulic cylinder as claimed in claim 2, further comprising a control valve (9), wherein the left side and the right side of the inside of the control valve (9) are respectively provided with a first cavity (17), the top surface of the first cavity (17) and the bottom surface of the first cavity (17) are respectively provided with an upper through hole (16) and a lower through hole (18), the lower through hole (18) and the upper opening (22) of the first cavity (17) on the left side are communicated through a fixed pipe (19), the upper through hole (16) and the pipe connector II (13) of the first cavity (17) on the left side are communicated through an oil pipe, the upper through hole (16) and the pipe connector I (14) of the first cavity (17) on the right side are communicated through an oil pipe, the lower through hole (18) and the oil tank (10) of the first cavity (17) on the right side are respectively fixed with a left guide plate (24) and a right guide plate (36) in the first cavity (17), the hydraulic control valve is characterized in that a left guide through hole (25) and a right guide through hole (37) are formed in the left guide plate (24) and the right guide plate (36) respectively, a left sliding rod (23) and a right sliding rod (35) are connected in the left guide through hole (25) and the right guide through hole (37) in a sliding mode respectively, a left valve core (27) and a right valve core (39) are fixed to the bottom end of the left sliding rod (23) and the top end of the right sliding rod (35) respectively, the left valve core (27) is matched with a lower through hole (18) of a left cavity I (17), the right valve core (39) is matched with an upper through hole (16) of a right cavity I (17), a left spring (26) and a right spring (38) are sleeved on the left sliding rod (23) and the right sliding rod (35) respectively, two ends of the left spring (26) are connected with the left guide plate (24) and the left valve core (27) respectively, and two ends of the right spring (38) are connected with the right guide plate (36) respectively, The left sliding rod (23) and the right sliding rod (35) are both connected with the linkage assembly, a switch assembly is arranged in the fixed pipe (19), and the switch assembly is connected with the left valve core (27).
4. The double-acting energy feedback structure of the bidirectional hydraulic cylinder as recited in claim 3, wherein the linkage assembly comprises a second cavity (31) disposed inside the control valve (9), the second cavity (31) is disposed between the first cavities (17), a left connecting through hole (43) and a right connecting through hole (32) are respectively disposed between a left side wall of the second cavity (31) and the first cavity (17) on the left side, and between a right side wall of the second cavity (31) and the first cavity (17) on the right side, a left movable rod (44) and a right movable rod (33) are respectively slidably connected inside the left connecting through hole (43) and the right connecting through hole (32), the left movable rod (44) is disposed above the left sliding rod (23), a left end of the left movable rod (44) is disposed inside the first cavity (17) on the left side and on the right side of the left sliding rod (23), a left transmission rod (45) is disposed between the left movable rod (44) and the left sliding rod (23), the top of the left end of left side movable rod (44) and left slide bar (23) is articulated mutually with the both ends of left transfer line (45) respectively, the below of right slide bar (35) is arranged in right side movable rod (33), the right-hand member of right side movable rod (33) is arranged in right side cavity (17) and is located the left side of right slide bar (35), be equipped with right transfer line (34) between right side movable rod (33) and right slide bar (35), the right-hand member of right side movable rod (33) and the bottom of right slide bar (35) are articulated mutually with the both ends of right transfer line (34) respectively, install gear (41) in cavity two (31), the right-hand member of left side movable rod (44) is arranged in cavity two (31) and is fixed with rack one (42) on it, the left end of right side movable rod (33) is arranged in cavity two (31) and is fixed with rack two (30) on it, rack one (42) and rack two (30) are arranged in the upper and lower both sides of gear (41) respectively and all mesh mutually with gear (41) The rack I (42) is connected with the right side wall of the cavity II (31) through a return spring I (40), and the rack II (30) is connected with the left side wall of the cavity II (31) through a return spring II (29).
5. A two-way double-acting energy feedback structure of a hydraulic cylinder according to claim 3, wherein the switch assembly comprises a torsion spring seat (46), the torsion spring seats (46) are respectively fixed on the inner side walls of two opposite sides of the fixed pipe (19), a rotating plate (48) is arranged on the torsion spring seat (46), one side of the rotating plate (48) is mounted on the torsion spring seat (46) and is rotatably connected with the torsion spring seat, the other side of the rotating plate (48) is hinged with an electromagnet (49), the torsion spring seat (46) and the electromagnet (49) are located in the same vertical plane, a baffle plate (50) matched with the electromagnet (49) is fixed on the inner side wall of the fixed pipe (19), the baffle plate (50) is arranged below the electromagnet (49), a connecting rod (28) is arranged at the bottom of the left valve core (27), and a lower through hole (18) of the connecting rod (28) penetrating through the left cavity I (17) is arranged in the fixed pipe (19) The portion, the one end and the left case (27) fixed connection of connecting rod (28), the connecting rod (28) other end is equipped with and rotates flitch (48) assorted down tube (47), the one end and connecting rod (28) fixed connection of down tube (47) and be the obtuse angle setting between the two, the other end of down tube (47) is located the side of rotating flitch (48) and just is towards rotating flitch (48).
6. The double-acting energy feedback structure of the bidirectional hydraulic cylinder as recited in claim 5, further comprising a safety valve (11) and an oil compensating valve (12), wherein the first pipe connector (14) is communicated with the oil tank (10), the second pipe connector (13) is communicated with the oil tank (10) through the first safety oil pipe and the second safety oil pipe, the first safety oil pipe and the second safety oil pipe are both mounted on the safety valve (11), the side wall of the fixed pipe (19) is provided with a side through hole (51), the side through hole (51) is located above the torsion spring seat (46), the first pipe connector (14) is communicated with the oil tank (10), the second pipe connector (13) is communicated with the side through hole (51), and the first oil compensating pipe and the second oil compensating pipe are both mounted on the oil compensating valve (12).
7. The double-acting energy feedback structure of the bidirectional hydraulic cylinder as claimed in claim 1, further comprising a four-quadrant servo driver (3), an LCL circuit (2) and a three-phase power grid (1), wherein the motor (4) is provided with a wire connector (5), and the wire connector (5), the four-quadrant servo driver (3), the LCL circuit (2) and the three-phase power grid (1) are sequentially connected in series.
8. A bi-directional hydraulic cylinder double action energy feedback structure as claimed in claim 1, characterized in that said electric motor (4) is of the type of a permanent magnet synchronous motor.
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| CN202122777414.3U CN216589339U (en) | 2021-11-15 | 2021-11-15 | Two-way hydraulic cylinder double-acting energy feedback structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321037A (en) * | 2021-11-15 | 2022-04-12 | 杭州宝协机电科技有限公司 | Bidirectional hydraulic cylinder double-acting energy feedback system and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321037A (en) * | 2021-11-15 | 2022-04-12 | 杭州宝协机电科技有限公司 | Bidirectional hydraulic cylinder double-acting energy feedback system and method thereof |
| CN114321037B (en) * | 2021-11-15 | 2023-12-22 | 杭州宝协机电科技有限公司 | Bidirectional hydraulic cylinder double-acting energy feedback system and method thereof |
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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 |