CN211550111U - Hydraulic system with double hydraulic cylinders - Google Patents
Hydraulic system with double hydraulic cylinders Download PDFInfo
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- CN211550111U CN211550111U CN201922428624.4U CN201922428624U CN211550111U CN 211550111 U CN211550111 U CN 211550111U CN 201922428624 U CN201922428624 U CN 201922428624U CN 211550111 U CN211550111 U CN 211550111U
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Abstract
The utility model relates to a hydraulic system with double hydraulic cylinders, which comprises a first oil tank, a second oil tank, a hydraulic pump, a reversing valve, a first hydraulic cylinder and a second hydraulic cylinder; the first oil tank is communicated with the hydraulic pump and the reversing valve through oil inlet pipelines, the outlet a ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively communicated with a connecting pipeline a and communicated with the reversing valve through a parallel pipeline a, the outlet b ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively communicated with a connecting pipeline b and communicated with the reversing valve through a parallel pipeline b, the reversing valve is communicated with the second oil tank through an oil return pipeline, and the connecting pipeline a is provided with a constant delivery pump; the oil inlet pipeline is communicated with an energy storage pipeline, one end of the energy storage pipeline is connected with an energy accumulator, a pipeline damping piece is arranged at a position, close to the energy accumulator, of the energy storage pipeline, and the energy accumulator is communicated with a circulating cooling water pipeline. The utility model has the advantages of as follows: avoid the impact and the vibration of hydraulic pressure pipeline and components and parts inner wall, effectively avoid the leakage of fluid.
Description
The technical field is as follows:
the utility model belongs to the hydraulic system field, concretely relates to hydraulic system of two pneumatic cylinders.
Background art:
hydraulic systems have wide application in the field of industrial production, mainly for converting the pressure of hydraulic oil into a rotary or reciprocating movement of a mechanism. The hydraulic system comprises a power element, an execution element, a control element, an auxiliary element and hydraulic oil. Wherein the power element (such as a hydraulic pump) is used for converting the mechanical energy of the prime mover into the pressure energy of the liquid; the action of an actuating element (such as a hydraulic cylinder) is to convert the pressure of liquid into mechanical energy and drive a load to do linear reciprocating motion or rotary motion; control elements, such as various hydraulic valves, control and regulate the pressure, flow, and direction of fluid in the hydraulic system. The auxiliary elements comprise an oil tank, an oil pipe, an oil filter and the like.
In some large-scale mechanical equipment, need two pneumatic cylinders to carry out the simultaneous drive, and during the transmission of two pneumatic cylinders, then the pressure in the whole hydraulic system pipeline will be big, just can take out the fluid in the oil tank fast to two hydraulic pumps, realize the transmission of hydraulic pump, but the hydraulic system of this kind of two pneumatic cylinders has following problem: 1. when redundant liquid kinetic energy exists in a pipeline of the hydraulic system, the liquid kinetic energy is transmitted in the pipeline in a pressure wave mode to form a hydraulic impact pipeline and the inner walls of all components, so that large vibration is generated; 2. when hydraulic system is in the time of the state of suddenly shutting down, near the hydraulic pump and advance near the pressure of oil pipe way very big, fluid not only produces impact and vibration to hydraulic line and components and parts inner wall this moment, and under the great condition of pressure, fluid temperature rises, and fluid viscosity reduces, and fluid in the hydraulic system can follow the connection play of pipeline and leak, even install the energy storage ware on the pipeline and absorb this part hydraulic shock, also can't effectively improve this defect.
The utility model has the following contents:
the utility model aims at overcoming the not enough above, provide a hydraulic system of two pneumatic cylinders, avoid the impact and the vibration of hydraulic pressure pipeline and components and parts inner wall, effectively avoid the leakage of fluid.
The purpose of the utility model is realized through the following technical scheme: a hydraulic system with double hydraulic cylinders comprises a first oil tank, a second oil tank, a hydraulic pump, a reversing valve, a first hydraulic cylinder and a second hydraulic cylinder;
the first oil tank is communicated with the hydraulic pump and the reversing valve through oil inlet pipelines, the outlet a ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively communicated with a connecting pipeline a and communicated with the reversing valve through a parallel pipeline a, the outlet b ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively communicated with a connecting pipeline b and communicated with the reversing valve through a parallel pipeline b, the reversing valve is communicated with the second oil tank through an oil return pipeline, and the connecting pipeline a is provided with a constant delivery pump;
the oil inlet pipeline is communicated with an energy storage pipeline, one end of the energy storage pipeline is connected with an energy accumulator, a pipeline damping piece is arranged at a position, close to the energy accumulator, of the energy storage pipeline, and the energy accumulator is communicated with a circulating cooling water pipeline.
The utility model discloses a further improvement lies in: the energy accumulator comprises a shell, an air cavity cover arranged at one end of the shell and an oil cavity cover arranged at the other end of the shell, wherein an inflation valve is arranged on the air cavity cover;
the shell comprises an aluminum alloy outer ring body and an aluminum alloy inner ring body arranged in the aluminum alloy outer ring body, a cavity communicated with a circulating cooling water pipeline is arranged between the aluminum alloy outer ring body and the aluminum alloy inner ring body, the two side ends of the aluminum alloy outer ring body and the aluminum alloy inner ring body are fixedly connected, a cavity is arranged in the aluminum alloy inner ring body, a piston is arranged in the cavity, the outer side wall of the piston is in contact with the inner wall of the cavity, and the cavity is divided into an air cavity chamber and an oil cavity chamber by the.
The utility model discloses a further improvement lies in: the aluminum alloy outer ring body is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with two ends of a circulating cooling water pipeline, a temperature sensor is arranged at the position, close to the water outlet, of the circulating cooling water pipeline, and the circulating cooling water pipeline is sequentially connected with a condenser, a vacuum pump and a circulating pump along the outlet to the inlet direction.
The utility model discloses a further improvement lies in: the outer part of the aluminum alloy inner ring body is sequentially sleeved with radiating fins along the long axis direction of the aluminum alloy inner ring body, the radiating fins are of an annular structure, and gaps are formed between every two adjacent radiating fins.
The utility model discloses a further improvement lies in: the pipeline shock absorption piece comprises a rubber air bag, and the rubber air bag is sleeved at the position, close to the energy accumulator, of the energy storage pipeline.
The utility model discloses a further improvement lies in: the energy storage pipeline is provided with a stop valve.
The utility model discloses a further improvement lies in: the position of advancing oil pipe way on being close to the hydraulic pump has an overflow pipeline, has overflow valve and overflow pipeline's one end on the overflow pipeline and leads to first oil tank.
The utility model discloses a further improvement lies in: the energy storage pipeline is communicated with the overflow pipeline through a branch pipe.
The utility model discloses a further improvement lies in: the oil inlet pipeline is provided with a one-way valve.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses set up the constant delivery pump on the connecting line a of connecting the hydraulic pump, make the fluid ration flow direction hydraulic pump in the oil inlet pipe way, when the oil pressure force in the oil inlet pipe way is great, the setting of constant delivery pump plays the effect of protection hydraulic pump, guarantee the fluid flow, and unnecessary oil pressure force flows to the energy storage ware through the energy storage pipeline, the hydraulic shock of effective absorption pipeline of setting up of energy storage ware, the constant delivery pump cooperates with both energy storage ware, can effectively satisfy the different flow demand of two pneumatic cylinders, unnecessary oil pressure force has also been guaranteed to absorb simultaneously.
2. When a hydraulic system is suddenly stopped, the pressure in a pipeline suddenly rises, oil quickly enters an energy accumulator through an energy storage pipeline, the oil in the energy accumulator is cooled through a circulating cooling water pipeline, a rubber air bag is arranged at the position, close to the energy accumulator, of the energy storage pipeline, vibration caused by impact of high-pressure oil on the pipeline is effectively solved, the oil in the energy accumulator is used by a hydraulic cylinder after the temperature of the oil in the energy accumulator is reduced, and under a special condition, the pipeline pressure is effectively absorbed, and the temperature of the oil can be reduced.
3. The cooling water in the circulating cooling water pipeline enters the condenser to be cooled, then the shell of the energy accumulator circulates, the oil liquid enters the oil cavity chamber of the energy accumulator, the oil liquid entering the energy accumulator is cooled in a water cooling mode, and the radiating fins in the shell further play a role in radiating.
Description of the drawings:
fig. 1 is a structural layout diagram of the hydraulic system of the dual hydraulic cylinders in the hydraulic cylinder transmission state of the present invention.
Fig. 2 is a structural layout diagram of the hydraulic system of the dual hydraulic cylinders in the hydraulic cylinder reset state of the present invention.
Fig. 3 is a schematic diagram illustrating the connection of the energy accumulator of the hydraulic system of the dual hydraulic cylinder according to the present invention.
Fig. 4 is a schematic structural diagram of an energy accumulator of a hydraulic system of a dual hydraulic cylinder according to the present invention.
Reference numbers in the figures:
1-an oil tank, 2-a second oil tank, 3-a hydraulic pump, 4-a reversing valve, 5-a first hydraulic cylinder, 6-a second hydraulic cylinder, 7-an oil inlet pipeline, 8-an outlet end a, 9-an outlet end b, 10-a parallel pipeline a, 11-a parallel pipeline b, 12-an oil return pipeline, 13-an energy storage pipeline, 14-an energy accumulator, 15-a circulating cooling water pipeline, 16-a rubber bag, 17-a stop valve, 18-an overflow pipeline, 19-an overflow valve, 20-a branch pipe, 21-a connecting pipeline a, 22-a connecting pipeline b and 23-a one-way valve;
141-shell, 142-air cavity cover, 143-oil cavity cover, 144-gas charging valve, 145-aluminum alloy outer ring body, 146-aluminum alloy inner ring body, 147-cavity, 148-piston, 149-air cavity, 150-oil cavity, 151-water inlet, 152-water outlet, 153-temperature sensor, 154-condenser, 155-vacuum pump, 156-circulating pump and 157-radiating fin.
The specific implementation mode is as follows:
in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship, such as those based on the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that the structures or units indicated must have a specific orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise specified or limited, terms such as "connected," "provided," "having," and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, or directly connected, and may be connected through an intermediate medium, and those skilled in the art can understand the basic meaning of the above terms in the present invention according to specific situations.
Fig. 1 and fig. 2 show an embodiment of a hydraulic system of a dual hydraulic cylinder according to the present invention, which includes a first oil tank 1, a second oil tank 2, a hydraulic pump 3, a reversing valve 4, a first hydraulic cylinder 5, and a second hydraulic cylinder 6;
the first oil tank 1 is communicated with the hydraulic pump 3 and the reversing valve 4 through an oil inlet pipeline 7, the outlet a ends 8 of the first hydraulic cylinder 5 and the second hydraulic cylinder 6 are respectively communicated with a connecting pipeline a21 and are communicated with the reversing valve 4 through a parallel pipeline a10, the outlet b ends 9 of the first hydraulic cylinder 5 and the second hydraulic cylinder 6 are respectively communicated with a connecting pipeline b22 and are communicated with the reversing valve 4 through a parallel pipeline b11, the reversing valve 4 is communicated with the second oil tank 2 through an oil return pipeline 12, and the connecting pipeline a21 is provided with a fixed displacement pump 24;
as shown in fig. 3, the oil inlet pipeline 7 is communicated with an energy storage pipeline 13, one end of the energy storage pipeline 13 is connected with an energy accumulator 14, a pipeline shock absorption member is arranged at a position of the energy storage pipeline 13 close to the energy accumulator 14, and the energy accumulator 14 is communicated with a circulating cooling water pipeline 15.
With regard to the hydraulic cylinder 6: the hydraulic cylinder 6 comprises a hydraulic rod arranged inside, a cavity formed in the hydraulic cylinder 6 by the hydraulic rod is a rod cavity, and a cavity positioned on the back face of the hydraulic rod in the hydraulic cylinder 6 is a rodless cavity. The hydraulic cylinder 6 and the electro-hydraulic directional valve 5 are all commercially available products, and therefore, detailed description is omitted.
The working principle of the hydraulic system is as follows:
during hydraulic cylinder transmission, the oil inlet pipeline 7 and the oil outlet pipeline 8 are respectively communicated with the left position of the reversing valve 5, as shown in fig. 1, the oil inlet pipeline 7 is communicated with the end A and the end C of the left position of the reversing valve 5 and respectively flows into the rodless cavity of the hydraulic cylinder through the outlet end a 8 of the hydraulic cylinder to the two connecting pipelines a21 through the parallel pipeline a10, so that a hydraulic rod is pushed to transmit, at the moment, oil in the rod cavity of the hydraulic cylinder is communicated with the end B and the end D of the left position of the reversing valve 5 through the connecting pipeline B22 and the parallel pipeline B11 in sequence through the outlet end B9 and finally flows into the second oil tank 2. The oil flow direction of the fixed displacement pump 24 can be set, and if the oil pressure in the pipeline is excessive, the excessive oil pressure flows to the energy accumulator 14 through the energy accumulation pipeline 13 to play the roles of absorbing the pipeline oil pressure and accumulating energy.
When the hydraulic cylinder is reset, the oil inlet pipeline 7 and the oil outlet pipeline 8 are respectively communicated with the right position of the reversing valve 5, as shown in fig. 2, the oil inlet pipeline 7 is communicated with the G end and the H end of the right position of the reversing valve 5 and respectively flows to the two connecting pipelines b22 through the outlet b end 9 of the hydraulic cylinder to the rod cavity of the hydraulic cylinder through the parallel pipeline b11, so that the hydraulic rod is reversely pushed to reset the hydraulic cylinder, and at the moment, oil in the rodless cavity is communicated with the E end and the F end of the right position of the reversing valve 5 through the outlet a end 8 and flows into the second oil tank 12 through the parallel pipeline a 10.
The utility model discloses set up constant delivery pump 24 on the connecting line a21 of connecting the hydraulic pump, make the fluid ration flow direction hydraulic pump 3 in the oil inlet pipe way 7, when the fluid pressure volume in the oil inlet pipe way 7 is great, the setting of constant delivery pump 3 plays the effect of protection hydraulic pump 3, guarantee the fluid flow, and unnecessary fluid pressure volume flows to energy storage ware 14 through energy storage pipeline 13, energy storage ware 14 sets up the hydraulic shock of effective absorption pipeline, constant delivery pump 3 and the cooperation of energy storage ware 14 both, can effectively satisfy the different flow demands of two pneumatic cylinders, unnecessary fluid pressure volume has also been guaranteed simultaneously and has been absorbed.
Further, as shown in fig. 4, the accumulator 14 includes a housing 141, an air chamber cover 142 disposed at one end of the housing 141, and an oil chamber cover 143 disposed at the other end of the housing 141, the air chamber cover 142 having an inflation valve 144 thereon;
the casing 141 comprises an aluminum alloy outer ring body 145 and an aluminum alloy inner ring body 146 arranged in the aluminum alloy outer ring body 145, a cavity communicated with the circulating cooling water pipeline 15 is formed between the aluminum alloy outer ring body 145 and the aluminum alloy inner ring body 146, the aluminum alloy outer ring body 145 is fixedly connected with two side ends of the aluminum alloy inner ring body 146, a cavity 147 is formed in the aluminum alloy inner ring body 146, a piston 148 is arranged in the cavity 147, the outer side wall of the piston 148 is in contact with the inner wall of the cavity 147, and the cavity 147 is divided into an air cavity 149 and an oil cavity 150 by the piston 148.
The aluminum alloy outer ring body 145 is provided with a water inlet 151 and a water outlet 152, the water inlet 151 and the water outlet 152 are communicated with two ends of the circulating cooling water pipeline 15, a temperature sensor 153 is arranged at a position of the circulating cooling water pipeline 15 close to the water outlet 152, and the circulating cooling water pipeline 15 is sequentially connected with a condenser 154, a vacuum pump 155 and a circulating pump 156 along an outlet to an inlet direction.
Further, the outer portion of the aluminum alloy inner ring 146 is sequentially sleeved with heat dissipation fins 157 along the long axis direction of the aluminum alloy inner ring 146, the heat dissipation fins 157 are of an annular structure, and a gap is formed between two adjacent heat dissipation fins 157.
After cooling water in the circulating cooling water pipeline 15 enters the condenser 154 to be cooled, the cooling water circulates inside the housing 141 of the energy accumulator 14, the oil enters the oil chamber 150 of the energy accumulator 14, the oil entering the energy accumulator 14 is cooled through water cooling, and the heat dissipation fins 157 in the housing further play a role in heat dissipation.
Further, the pipeline shock absorption part comprises a rubber air bag 16, and the rubber air bag 16 is sleeved at the position, close to the energy accumulator 14, of the energy storage pipeline 13.
When a hydraulic system is suddenly stopped, the pressure in a pipeline suddenly rises, oil quickly enters an energy accumulator 14 through an energy storage pipeline 13, the oil in the energy accumulator 14 is cooled through a circulating cooling water pipeline 15, a rubber air bag 16 is arranged at the position, close to the energy accumulator 14, of the energy storage pipeline 13, vibration caused by impact of high-pressure oil on the pipeline is effectively solved, the oil in the energy accumulator 14 is used by a hydraulic cylinder after the temperature of the oil is reduced, and under special conditions, the pressure of the pipeline is effectively absorbed, and the temperature of the oil can be reduced.
Working principle of the accumulator 14: the gas chamber cover 142 of the accumulator 14 is charged with gas, the gas enters the gas chamber 149, the compression piston 148 pushes the oil in the oil chamber 150 to flow from the energy storage pipeline 13 to the hydraulic system, when the pressure in the hydraulic system is higher than the gas pressure, the pressure of the oil pushes the piston 148 to move upwards, and at the moment, the oil enters the oil chamber 150, so that the effects of releasing the pipeline pressure of the hydraulic system and storing energy are achieved.
The utility model discloses a vacuum pump 155 and circulating pump 156 set up in the position of recirculated cooling water pipeline 15 flow direction energy storage ware 14, avoid the circulating water to rise the back and exert an influence to vacuum pump 155 and circulating pump 156 through the shell 141 temperature of energy storage ware 14.
The utility model discloses well inlet tube 151 sets up to relative position with outlet pipe 152, if inlet tube 151 is in the upper end of shell 141 one side, outlet pipe 152 is at the lower extreme of shell 141 opposite side, or inlet tube 151 is at the lower extreme of shell 141 one side, outlet pipe 152 is in the upper end of shell 141 opposite side, the circulating water flows to outlet pipe 152 through inlet tube 151, in the flow process, through vacuum pump 155 and circulating pump 156, the circulating water can flow round a plurality of annular radiating fin 157, annular radiating fin 157 not only plays the effect of water conservancy diversion, avoid the circulating water to produce the vortex in shell 141 and consequently shell 141 vibrates, and the area of contact of circulating water with radiating fin 157 has also been improved, and the radiating effect is improved.
Furthermore, the energy storage pipeline 13 is provided with a stop valve 17, and the stop valve 17 is arranged to facilitate the replacement of the energy accumulator 14 in the later maintenance.
Furthermore, an overflow pipeline 18 is arranged on the oil inlet pipeline 7 and close to the hydraulic pump 3, an overflow valve 19 is arranged on the overflow pipeline 18, one end of the overflow pipeline 18 leads to the first oil tank 1, and oil at the overflow position in the oil inlet pipeline 7 flows into the first oil tank 1 through the overflow pipeline 18.
Further, the energy storage pipeline 13 is communicated with the overflow pipeline 18 through a branch pipe 20, and once the oil on the energy storage pipeline 13 overflows, the oil can flow into the first oil tank 1 through the overflow pipeline 18.
Furthermore, the oil inlet pipeline 7 is provided with a one-way valve 23, so that the phenomenon of overflow of oil on the oil inlet pipeline 7 is avoided.
The present invention is not limited to the above-described embodiments, and the description of the embodiments and the description is only illustrative of the principles of the present invention, and various changes and modifications can be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a hydraulic system of two pneumatic cylinders which characterized in that: the hydraulic control system comprises a first oil tank (1), a second oil tank (2), a hydraulic pump (3), a reversing valve (4), a first hydraulic cylinder (5) and a second hydraulic cylinder (6);
the first oil tank (1) is communicated with the hydraulic pump (3) and the reversing valve (4) through an oil inlet pipeline (7), outlet a ends (8) of the first hydraulic cylinder (5) and the second hydraulic cylinder (6) are respectively communicated with a connecting pipeline a (21) and are communicated with the reversing valve (4) through a parallel pipeline a (10), outlet b ends (9) of the first hydraulic cylinder (5) and the second hydraulic cylinder (6) are respectively communicated with a connecting pipeline b (22) and are communicated with the reversing valve (4) through a parallel pipeline b (11), the reversing valve (4) is communicated with the second oil tank (2) through an oil return pipeline (12), and a quantitative pump (24) is arranged on the connecting pipeline a (21);
the oil inlet pipeline (7) is communicated with an energy storage pipeline (13), one end of the energy storage pipeline (13) is connected with an energy accumulator (14), a pipeline damping piece is arranged at a position, close to the energy accumulator (14), of the energy storage pipeline (13), and the energy accumulator (14) is communicated with a circulating cooling water pipeline (15).
2. The hydraulic system of a twin hydraulic cylinder as defined in claim 1, wherein: the energy accumulator (14) comprises a shell (141), an air cavity cover (142) arranged at one end of the shell (141) and an oil cavity cover (143) arranged at the other end of the shell (141), wherein an inflation valve (144) is arranged on the air cavity cover (142);
the shell (141) comprises an aluminum alloy outer ring body (145) and an aluminum alloy inner ring body (146) arranged in the aluminum alloy outer ring body (145), a cavity communicated with the circulating cooling water pipeline (15) is formed between the aluminum alloy outer ring body (145) and the aluminum alloy inner ring body (146), the aluminum alloy outer ring body (145) is fixedly connected with two side ends of the aluminum alloy inner ring body (146), a cavity (147) is arranged in the aluminum alloy inner ring body (146), a piston (148) is arranged in the cavity (147), the outer side wall of the piston (148) is in contact with the inner wall of the cavity (147), and the cavity (147) is divided into an air cavity (149) and an oil cavity (150) by the piston (148).
3. The hydraulic system of a twin hydraulic cylinder as defined in claim 2, wherein: the aluminum alloy outer ring body (145) is provided with a water inlet (151) and a water outlet (152), the water inlet (151) and the water outlet (152) are communicated with two ends of a circulating cooling water pipeline (15), a temperature sensor (153) is arranged at the position, close to the water outlet (152), of the circulating cooling water pipeline (15), and the circulating cooling water pipeline (15) is sequentially connected with a condenser (154), a vacuum pump (155) and a circulating pump (156) along an outlet to an inlet direction.
4. The hydraulic system of a twin hydraulic cylinder as defined in claim 3, wherein: the outer portion of the aluminum alloy inner ring body (146) is sequentially sleeved with radiating fins (157) along the long axis direction of the aluminum alloy inner ring body (146), the radiating fins (157) are of an annular structure, and gaps are formed between every two adjacent radiating fins (157).
5. The hydraulic system of a twin hydraulic cylinder as defined in claim 1, wherein: the pipeline shock absorption piece comprises a rubber air bag (16), and the rubber air bag (16) is sleeved at the position, close to the energy accumulator (14), of the energy storage pipeline (13).
6. The hydraulic system of a twin hydraulic cylinder as defined in claim 5, wherein: the energy storage pipeline (13) is provided with a stop valve (17).
7. The hydraulic system of a twin hydraulic cylinder as defined in claim 1, wherein: an overflow pipeline (18) is arranged on the oil inlet pipeline (7) and close to the hydraulic pump (3), an overflow valve (19) is arranged on the overflow pipeline (18), and one end of the overflow pipeline (18) is communicated with the first oil tank (1).
8. The hydraulic system of a twin hydraulic cylinder as defined in claim 7, wherein: the energy storage pipeline (13) is communicated with the overflow pipeline (18) through a branch pipe (20).
9. The hydraulic system of a twin hydraulic cylinder as defined in claim 8, wherein: the oil inlet pipeline (7) is provided with a one-way valve (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922428624.4U CN211550111U (en) | 2019-12-30 | 2019-12-30 | Hydraulic system with double hydraulic cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922428624.4U CN211550111U (en) | 2019-12-30 | 2019-12-30 | Hydraulic system with double hydraulic cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211550111U true CN211550111U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922428624.4U Active CN211550111U (en) | 2019-12-30 | 2019-12-30 | Hydraulic system with double hydraulic cylinders |
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| Country | Link |
|---|---|
| CN (1) | CN211550111U (en) |
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2019
- 2019-12-30 CN CN201922428624.4U patent/CN211550111U/en active Active
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