CN220646337U - Hydraulic system of leveling machine - Google Patents
Hydraulic system of leveling machine Download PDFInfo
- Publication number
- CN220646337U CN220646337U CN202322371817.7U CN202322371817U CN220646337U CN 220646337 U CN220646337 U CN 220646337U CN 202322371817 U CN202322371817 U CN 202322371817U CN 220646337 U CN220646337 U CN 220646337U
- Authority
- CN
- China
- Prior art keywords
- oil
- way
- pressure
- pressure oil
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 247
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a hydraulic system of a leveling machine, which comprises an oil supply assembly, an oil cylinder and a hydraulic motor; the oil supply assembly comprises an oil tank, and a first motor pump group and a second motor pump group are arranged in the oil tank; the first pressure oil way and the second pressure oil way are provided with pressure valves at the rear end of the first motor pump set, and a first overflow valve is connected between the first pressure oil way and the first oil return way and between the second pressure oil way and the second oil return way; through adjusting the proportional reversing valve, the pressure oil overflows through the first overflow valve of first pressure oil circuit or second pressure oil circuit, and the first oil return way or second oil return way returns, realizes finely adjusting the distance between the upper row roller and the lower row roller, and through the positive and negative rotation and the stepless speed change of variable frequency motor and electromagnetic reversing valve adjustment hydraulic motor, simple structure can realize the independent control of hydro-cylinder and hydraulic motor, and the equipment integration is high.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems, in particular to a hydraulic system of a leveling machine.
Background
The leveler is mainly applied to leveling plates with various specifications and plates cut into blocks, and is suitable for leveling various cold and hot rolled plates. When the leveling machine is used for leveling, the distance between the upper row roller and the lower row roller needs to be adjusted so as to adapt to plates with different thicknesses, and meanwhile, the rollers need to be controlled to rotate so as to convey the plates.
In the prior art, chinese patent with the document number of CN211778268U discloses a straightening roller transmission hydraulic system of a leveling machine, belongs to the technical field of hydraulic control, and aims to realize real-time dynamic control of the rotating speed of the straightening roller. The hydraulic oil return system comprises a hydraulic motor, a forward rotation oil inlet pipeline, a reverse rotation oil inlet pipeline, a main oil return pipeline, a forward rotation oil return branch, a reverse rotation oil return branch, an electro-hydraulic proportional valve and an electro-hydraulic servo valve; a forward rotation switch valve is arranged on the forward rotation oil inlet pipeline; a reversing switch valve is arranged on the reversing oil inlet pipeline; the electro-hydraulic proportional valve and the electro-hydraulic servo valve are connected in parallel on the main oil inlet pipeline. The technical scheme can realize the rotation speed control of the hydraulic motor, but has a complex structure, and can not realize independent control of the hydraulic motor and the oil cylinder at the same time.
Therefore, it is necessary to design a hydraulic system for a leveler with a simple structure and high integration level.
Disclosure of Invention
In view of the foregoing shortcomings of the prior art, it is an object of the present utility model to provide a hydraulic leveler system that solves one or more of the problems of the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the hydraulic system of the leveling machine comprises an oil supply assembly, an oil cylinder and a hydraulic motor;
the oil supply assembly comprises an oil tank, the oil tank is provided with at least three oil outlets and three oil return ports, the oil outlets are respectively connected with a first pressure oil way, a second pressure oil way and a third pressure oil way, the oil return ports are respectively connected with the first oil return way, the second oil return way and the third oil return way, a first motor pump set and a second motor pump set are arranged in the oil tank, the first motor pump set supplies oil to the first pressure oil way and the second pressure oil way, and the second motor pump set supplies oil to the third pressure oil way;
the rear ends of the first pressure oil way and the second pressure oil way are positioned at the rear end of the first motor pump group and are connected with a first working oil way through a proportional reversing valve, the first working oil way is connected with a first working oil port of an oil cylinder, the rear end of the second pressure oil way is connected with a second working oil port of the oil cylinder, and a first overflow valve is connected between the first pressure oil way and the first oil return way and between the second pressure oil way and the second oil return way;
the rear ends of the third pressure oil way and the third oil return way are connected with a second working oil way and a third working oil way through electromagnetic directional valves, the second working oil way is connected with a third working oil port of the hydraulic motor, the third working oil way is connected with a fourth working oil port of the hydraulic motor, and a second overflow valve is connected between the third pressure oil way and the third oil return way.
Further, the front ends of the first pressure oil way and the second pressure oil way, which are positioned at the front end of the first motor pump group, are respectively connected with the first oil absorption filter, and the rear ends of the first pressure oil way and the second pressure oil way, which are positioned at the rear end of the first motor pump group, are respectively connected with the high-pressure filter.
Further, the first pressure oil way and the second pressure oil way are positioned at the rear end of the first motor pump set and are respectively connected with the first pressure measuring joint, the first pressure sensor, the energy accumulator and the safety valve in sequence, and the safety valve is communicated with the oil tank.
Further, electromagnetic ball valves are further arranged on the first pressure oil way and the second pressure oil way.
Further, the third pressure oil way is located the second motor pump package front end and connects the second oil absorption filter, the third pressure oil way is located second motor pump package rear end and connects gradually check valve, second pressure sensor, second pressure measurement joint.
Further, the hydraulic system of the leveling machine further comprises an air cooler, and two ends of the air cooler are respectively connected with an oil outlet and an oil return port of the oil tank.
Further, the air cooler is also connected with a pipeline filter.
Further, the first motor pump group comprises two oil pumps and a motor, the motor drives the two oil pumps simultaneously, the second motor pump group comprises two oil pumps and a variable frequency motor, and the variable frequency motor drives the two oil pumps simultaneously.
Further, a liquid level meter, an air filter, a liquid level and temperature sensor, an oil drain ball valve, a cleaning cover and a standby port are also arranged on the oil tank.
Further, a bracket is further arranged on the oil tank, and the air cooler is arranged on the bracket.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the hydraulic system of the leveling machine, the proportional reversing valve is adjusted, the pressure oil overflows through the first overflow valve of the first pressure oil way or the second pressure oil way, and then returns through the first oil return way or the second oil return way, so that the distance between the upper row roller and the lower row roller is finely adjusted, the forward and reverse rotation and stepless speed change of the hydraulic motor are adjusted through the variable frequency motor and the electromagnetic reversing valve, the structure is simple, independent control of the oil cylinder and the hydraulic motor can be realized, and the equipment integration level is high.
And (II) the hydraulic system of the leveling machine further comprises an air cooler, wherein two ends of the air cooler are respectively connected with an oil outlet and an oil return port of the oil tank, the air cooler comprises a fan and an oil pump, the fan is used for cooling pressure oil pumped from the oil tank by the oil pump, the cooled pressure oil returns to the oil tank, and the service life and the safety of the hydraulic system are improved.
And thirdly, a support is further arranged on the oil tank, the air cooler is arranged on the support, the pressure valve, the first overflow valve, the safety valve, the first pressure sensor, the first pressure measuring probe and the energy accumulator are integrated on the same oil path integrated block and are arranged on the oil tank, and the one-way valve, the second pressure sensor, the second pressure measuring probe, the electromagnetic reversing valve and the second overflow valve are integrated on the same oil path integrated block and are arranged on the oil tank, so that the space utilization rate is improved.
Drawings
Fig. 1 shows a connection diagram of a hydraulic system of a leveler according to an embodiment of the present utility model.
Fig. 2 shows a connection relationship diagram of an oil cylinder in a hydraulic system of a leveler according to an embodiment of the present utility model.
Fig. 3 shows a connection relationship diagram of a hydraulic motor in a hydraulic system of a leveler according to an embodiment of the present utility model.
Fig. 4 shows a connection relationship diagram of an air cooler in a hydraulic system of a leveler according to an embodiment of the present utility model.
Fig. 5 shows a schematic front view of a hydraulic system of a leveler according to an embodiment of the present utility model.
Fig. 6 shows a schematic top view of a hydraulic system of a leveler according to an embodiment of the present utility model.
The reference numerals in the drawings:
1. an oil tank; 11. an air filter; 12. a liquid level gauge; 13. an oil drain ball valve; 14. cleaning the cover; 15. a liquid level and temperature sensor; 16. a standby port; 17. a bracket; 2. a first pressure oil path; 20. a first oil return path; 21. a first oil absorption filter; 22. a first motor pump unit; 23. a high pressure filter; 24. a pressure valve; 25. a first overflow valve; 26. an accumulator; 261. a safety valve; 262. a first pressure sensor; 27. a first pressure tap; 28. an electromagnetic ball valve; 29. a proportional reversing valve; 3. a second pressure oil path; 30. a second oil return path; 4. an oil cylinder; 41. a first working oil path; 5. a hydraulic motor; 51. a second working oil path; 52. a third working oil passage; 6. a third pressure oil path; 60. a third oil return path; 61. a second oil absorption filter; 62. a second motor pump unit; 63. a one-way valve; 64. a second pressure sensor; 65. a second pressure tap; 66. an electromagnetic reversing valve; 67. a second overflow valve; 7. an air cooler; 71. a pipeline filter.
Detailed Description
For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.
In the description of the present utility model, the positional or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In order to more clearly describe the structure of the hydraulic system of the leveler, the present utility model defines the terms "front end" and "rear end", specifically, "front end" means an end of the oil passage near the oil return port and the oil outlet port of the oil tank 1, and "rear end" means an end of the oil passage far from the oil return port and the oil outlet port of the oil tank 1, taking fig. 1 as an example, the lower end of the first pressure oil passage 2 in fig. 1 is the front end, and the upper end of the first pressure oil passage 2 in fig. 1 is the rear end.
Example 1
Referring to fig. 1, 2, 3, 4, 5 and 6, a hydraulic system of a leveler includes an oil supply unit, an oil cylinder 4 and a hydraulic motor 5;
the oil supply assembly comprises an oil tank 1, wherein the oil tank 1 is provided with at least three oil outlets and three oil return ports, the oil outlets are respectively connected with a first pressure oil way 2, a second pressure oil way 3 and a third pressure oil way 6, the oil return ports are respectively connected with a first oil return way 20, a second oil return way 30 and a third oil return way 60, a first motor pump unit 22 and a second motor pump unit 62 are arranged in the oil tank 1, the first motor pump unit 22 supplies oil to the first pressure oil way 2 and the second pressure oil way 3, and the second motor pump unit 62 supplies oil to the third pressure oil way 6;
the first pressure oil way 2 and the second pressure oil way 3 are provided with pressure valves 24 at the rear ends of the first motor pump group 22, and the pressure valves 24 are used for controlling the pressures in the first pressure oil way 2, the first oil return way 20, the second pressure oil way 3 and the second oil return way 30. The rear ends of the first pressure oil way 2 and the first oil return way 20 are connected with a first working oil way 41 through a proportional reversing valve 29, the first working oil way 41 is connected with a first working oil port of the oil cylinder 4, the rear end of the second pressure oil way 3 is connected with a second working oil port of the oil cylinder 4, and a first overflow valve 25 is connected between the first pressure oil way 2 and the first oil return way 20 and between the second pressure oil way 3 and the second oil return way 30;
the rear ends of the third pressure oil path 6 and the third oil return path 60 are connected with the second working oil path 51 and the third working oil path 52 through an electromagnetic reversing valve 66, the second working oil path 51 is connected with a third working oil port of the hydraulic motor 5, the third working oil path 52 is connected with a fourth working oil port of the hydraulic motor 5, a second overflow valve 67 is connected between the third pressure oil path 6 and the third oil return path 60, and the second overflow valve 67 is used for controlling the pressure in the third pressure oil path 6 and the third oil return path 60.
Specifically, the number of the cylinders 4 is four, and the number of the hydraulic motors 5 is two.
Referring to fig. 1 and 2, further, the first pressure oil circuit 2 and the second pressure oil circuit 3 are located at the front end of the first motor pump unit 22 and are respectively connected to the first oil suction filter 21, and the first pressure oil circuit 2 and the second pressure oil circuit 3 are located at the rear end of the first motor pump unit 22 and are respectively connected to the high pressure filter 23. The first oil suction filter 21 and the high pressure filter 23 are used for reducing and controlling pollution impurities in the hydraulic system and protecting an oil pump and other hydraulic components.
Referring to fig. 1 and 2, further, the first pressure oil circuit 2 and the second pressure oil circuit 3 are located at the rear end of the first motor pump unit 22, and are respectively connected with the first pressure measuring connector 27, the first pressure sensor 262, the accumulator 26 and the safety valve 261 in sequence, the safety valve 261 is communicated with the oil tank 1, the first pressure sensor 262 is used for detecting the pressure in the first pressure oil circuit 2, the accumulator 26 is used for preventing leakage and maintaining pressure of the hydraulic system, and the safety valve 261 is used for releasing pressure of the hydraulic system.
Referring to fig. 1 and 2, further, electromagnetic ball valves 28 are further disposed on the first pressure oil path 2 and the second pressure oil path 3, and the electromagnetic ball valves 28 are used for controlling the start and stop of the oil cylinder 4.
Referring to fig. 1 and 3, further, the third pressure oil path 6 is located at the front end of the second motor pump set 62 and connected to the second oil suction filter 61, the third pressure oil path 6 is located at the rear end of the second motor pump set 62 and connected to the check valve 63, the second pressure sensor 64, and the second pressure measuring connector 65 in sequence, and the check valve 63 is used for stopping pressure oil in the third pressure oil path 6.
Referring to fig. 1, 4, 5 and 6, further, the hydraulic system of the leveler further comprises an air cooler 7, wherein two ends of the air cooler 7 are respectively connected with an oil outlet and an oil return port of the oil tank 1. The air cooler 7 comprises a motor, a fan and an oil pump, wherein the motor is used for driving the fan and the oil pump, the fan is used for cooling the pressure oil pumped from the oil tank 1 by the oil pump, and the cooled pressure oil returns to the oil tank 1.
Referring to fig. 1, 4, 5 and 6, further, the air cooler 7 is also connected to a pipeline filter 71.
Referring to fig. 1 and 2, further, the first motor-pump unit 22 includes two oil pumps and a motor, the motor drives the two oil pumps simultaneously, and the second motor-pump unit 62 includes two oil pumps and a variable frequency motor, and the variable frequency motor drives the two oil pumps simultaneously.
Referring to fig. 1, 2, 5 and 6, further, the oil tank 1 is further provided with a liquid level gauge 12, an air filter 11, a liquid level and temperature sensor 15, an oil drain ball valve 13, a cleaning cover 14 and a standby port 16, wherein the liquid level and temperature sensor 15 is used for detecting the liquid level and temperature of the medium in the oil tank 1, and the oil drain ball valve 13 is used for draining the medium.
Referring to fig. 1, 2, 5 and 6, further, a bracket 17 is further disposed on the oil tank 1, and the air cooler 7 is disposed on the bracket 17. Specifically, the pressure valve 24, the first relief valve 25, the safety valve 261, the first pressure sensor 262, the first pressure measuring probe and the accumulator 26 are integrated on the same oil path integrated block and are mounted on the oil tank 1, and the check valve 63, the second pressure sensor 64, the second pressure measuring probe, the electromagnetic directional valve 66 and the second relief valve 67 are integrated on the same oil path integrated block and are mounted on the oil tank 1, so that the space utilization rate is improved.
The specific working procedure of the utility model is as follows:
when the leveler works, the plate needs to be conveyed by rollers, and the distance between the upper die and the lower die is controlled. When the first motor pump set 22 and the second motor pump set 62 are started, the two electromagnetic ball valves 28 are powered, the pressure oil is supplied to the first working oil port of the oil cylinder 4 through the first pressure oil path 2, the proportional reversing valve 29 and the first working oil path 41, and is supplied to the second working oil port of the oil cylinder 4 through the second pressure oil path 3, and when the distance between the upper row roller and the lower row roller needs to be finely adjusted, the pressure oil overflows through the first overflow valve 25 of the first pressure oil path 2 or the second pressure oil path 3 and returns through the first return oil path 20 or the second return oil path 30 through the proportional reversing valve 29.
The pressure oil is supplied to a third working oil port of the hydraulic motor 5 through a third pressure oil path 6 and a second working oil path 51, the fourth working oil port of the hydraulic motor 5 is returned to the oil tank 1 through a third working oil path 52 and a third oil return path 60, the forward rotation of the hydraulic motor 5 is realized, or the electromagnetic directional valve 66 is used for reversing, the pressure oil is supplied to the fourth working oil port of the hydraulic motor 5 through the third pressure oil path 6 and the third working oil path 52, and the third working oil port of the hydraulic motor 5 is returned to the oil tank 1 through the second working oil path 51 and the third oil return path 60, so that the reverse rotation of the hydraulic motor 5 is realized.
The air cooler 7 is used for cooling the pressure oil pumped by the oil pump.
The hydraulic system of the leveling machine, provided by the utility model, has the advantages that the oil way pressure is 10-20 MPa and the flow is 11-35L/min during working, and VG46 antiwear hydraulic oil is adopted as a system medium to meet the equipment requirement of the leveling machine.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A hydraulic system of a leveling machine is characterized in that: the hydraulic system of the leveling machine comprises an oil supply assembly, an oil cylinder and a hydraulic motor;
the oil supply assembly comprises an oil tank, the oil tank is provided with at least three oil outlets and three oil return ports, the oil outlets are respectively connected with a first pressure oil way, a second pressure oil way and a third pressure oil way, the oil return ports are respectively connected with the first oil return way, the second oil return way and the third oil return way, a first motor pump set and a second motor pump set are arranged in the oil tank, the first motor pump set supplies oil to the first pressure oil way and the second pressure oil way, and the second motor pump set supplies oil to the third pressure oil way;
the rear ends of the first pressure oil way and the second pressure oil way are positioned at the rear end of the first motor pump group and are connected with a first working oil way through a proportional reversing valve, the first working oil way is connected with a first working oil port of an oil cylinder, the rear end of the second pressure oil way is connected with a second working oil port of the oil cylinder, and a first overflow valve is connected between the first pressure oil way and the first oil return way and between the second pressure oil way and the second oil return way;
the rear ends of the third pressure oil way and the third oil return way are connected with a second working oil way and a third working oil way through electromagnetic directional valves, the second working oil way is connected with a third working oil port of the hydraulic motor, the third working oil way is connected with a fourth working oil port of the hydraulic motor, and a second overflow valve is connected between the third pressure oil way and the third oil return way.
2. A leveler hydraulic system as set forth in claim 1 wherein: the first pressure oil way and the second pressure oil way are positioned at the front end of the first motor pump set and are respectively connected with the first oil absorption filter, and the rear end of the first motor pump set is respectively connected with the high-pressure filter.
3. A leveler hydraulic system as set forth in claim 2 wherein: the first pressure oil way and the second pressure oil way are positioned at the rear end of the first motor pump set and are respectively connected with the first pressure measuring joint, the first pressure sensor, the energy accumulator and the safety valve in sequence, and the safety valve is communicated with the oil tank.
4. A leveler hydraulic system as set forth in claim 3 wherein: and electromagnetic ball valves are further arranged on the first pressure oil way and the second pressure oil way.
5. A leveler hydraulic system as set forth in claim 1 wherein: the third pressure oil way is positioned at the front end of the second motor pump set and connected with the second oil suction filter, and the third pressure oil way is positioned at the rear end of the second motor pump set and connected with the one-way valve, the second pressure sensor and the second pressure measuring connector in sequence.
6. A leveler hydraulic system as set forth in claim 1 wherein: the hydraulic system of the leveling machine further comprises an air cooler, and two ends of the air cooler are respectively connected with an oil outlet and an oil return port of the oil tank.
7. A leveler hydraulic system as set forth in claim 6 wherein: the air cooler is also connected with a pipeline filter.
8. A leveler hydraulic system as set forth in claim 1 wherein: the first motor pump group comprises two oil pumps and a motor, the motor drives the two oil pumps simultaneously, the second motor pump group comprises two oil pumps and a variable frequency motor, and the variable frequency motor drives the two oil pumps simultaneously.
9. A leveler hydraulic system as set forth in claim 1 wherein: the oil tank is also provided with a liquid level meter, an air filter, a liquid level and temperature sensor, an oil drain ball valve, a cleaning cover and a standby port.
10. A leveler hydraulic system as set forth in claim 6 wherein: the oil tank is also provided with a bracket, and the air cooler is arranged on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322371817.7U CN220646337U (en) | 2023-09-01 | 2023-09-01 | Hydraulic system of leveling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322371817.7U CN220646337U (en) | 2023-09-01 | 2023-09-01 | Hydraulic system of leveling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220646337U true CN220646337U (en) | 2024-03-22 |
Family
ID=90267588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322371817.7U Active CN220646337U (en) | 2023-09-01 | 2023-09-01 | Hydraulic system of leveling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220646337U (en) |
-
2023
- 2023-09-01 CN CN202322371817.7U patent/CN220646337U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203702744U (en) | Hydraulic lubrication integrated oil supply system | |
| CN113669312A (en) | Closed hydraulic control system and engineering machinery | |
| CN105545833B (en) | A kind of energy-saving lathe hydraulic power unit and its drive method | |
| CN220646337U (en) | Hydraulic system of leveling machine | |
| CN109854547A (en) | Long-range pressure regulation load-sensitive hydraulic station | |
| CN209129958U (en) | It is a kind of for driving the hydraulic system of super high-pressure hydrogen compressor | |
| CN107726031A (en) | A kind of crosscutting production line thin oil lubricant heating system | |
| CN215111966U (en) | Hydraulic lubrication integrated system | |
| CN216199342U (en) | Closed hydraulic control system and engineering machinery | |
| CN204099314U (en) | The automatic thickness hydraulic control system of high low pressure independence split | |
| CN103967859A (en) | Closed hydraulic system for controlling stable rotation of upper roller on four-roller veneer reeling machine | |
| CN211101084U (en) | Oil coating and die oil supply equipment for aluminum foil of high-speed punch press | |
| CN209800384U (en) | remote pressure regulating load sensitive hydraulic station | |
| CN220268061U (en) | Variable-speed transmission energy-saving device of bending machine | |
| CN103573610B (en) | A kind of hydraulic variable flow plunger pump repairing and Rinsing unit and method | |
| CN108678936B (en) | Pump operation control method | |
| CN110743964A (en) | Oil coating and die oil supply equipment for aluminum foil of high-speed punch press | |
| CN220365812U (en) | Multifunctional hydraulic circulation system for AGC system | |
| CN218493740U (en) | Closed hydraulic drive double-cylinder high-efficiency hydraulic pressurizing water injection equipment | |
| CN213206179U (en) | Servo hydraulic system of cast aluminum forming machine | |
| CN220435134U (en) | Hydraulic system of thickener | |
| CN215673535U (en) | Gear box oil level control system and operation machinery | |
| CN219243317U (en) | Hydrogen compressor system and hydrogen adding station | |
| CN219914860U (en) | Hydraulic torque converter test bed | |
| CN221074806U (en) | Intelligent double-pump hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |