CN113482521B - Parallel power system of rotary drilling rig - Google Patents
Parallel power system of rotary drilling rig Download PDFInfo
- Publication number
- CN113482521B CN113482521B CN202110838442.3A CN202110838442A CN113482521B CN 113482521 B CN113482521 B CN 113482521B CN 202110838442 A CN202110838442 A CN 202110838442A CN 113482521 B CN113482521 B CN 113482521B
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- China
- Prior art keywords
- motor
- generator
- storage unit
- energy storage
- transfer case
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- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 238000004146 energy storage Methods 0.000 claims abstract description 38
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000005381 potential energy Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/008—Winding units, specially adapted for drilling operations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Power Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a parallel power system of a rotary drilling rig, which comprises: the system comprises an engine, a transfer case, a master controller, an energy storage unit, a motor driving subsystem and a hydraulic driving subsystem. The motor driving subsystem is connected with the first output shaft of the transfer case and is used for providing power for the main winch and comprises a generator, a motor control unit, a motor and a speed reducer; the hydraulic driving subsystem is connected with the second output shaft of the transfer case and is used for providing power for other working devices, and the hydraulic driving subsystem comprises a main pump, a secondary pump, a main hydraulic system and a secondary hydraulic system. When the drill rod is lowered, the power system can reversely drag the motor to generate electricity, and the electric energy is fed back to the generator and the energy storage unit to assist the engine to provide a part of power; meanwhile, when the engine runs lightly, the generator is utilized to generate electricity, so that the engine works in a fuel economy area, and the purpose of energy conservation is achieved.
Description
Technical Field
The invention belongs to the field of engineering machinery, and particularly relates to a parallel power system of a rotary drilling rig.
Background
The rotary drilling rig is a pile engineering machine, and is increasingly widely applied according to the excellent performance in the construction of various large-scale pile foundations. However, with the increasing market competition, the problems of high fuel consumption and poor emission are attracting attention.
In the rotary digging operation process, the main winch is frequently lowered to release a large amount of gravitational potential energy, in the prior art, the main winch system basically adopts an open-loop hydraulic driving system, and the energy is basically consumed on the throttling loss of the balance valve, so that the energy is wasted, the heat load of the system is increased, and the service life of the hydraulic element is reduced. The energy in the process of lowering the main winch is stored for reuse, so that the fuel economy of the engine is improved, the emission is reduced, and the method has very important significance.
In a hybrid power rotary drilling rig of a patent CN102155160A, an engine, a generator and a main pump are arranged in series, an auxiliary pump is independently driven by a motor, and a formed hybrid power system has an energy recycling function, however, the axial length of a structure arranged in series is generally longer, and the reliability of a generator shaft and a main pump shaft is not facilitated for the working condition characteristics of severe vibration during the working of the rotary drilling rig; the power of the auxiliary hydraulic system passes through the generator, the motor and the auxiliary pump, so that more energy conversion links exist, and energy loss exists; the main hoisting mechanism comprises a clutch and has a complex structure. In the patent CN211924055U hybrid power system for engineering machinery and hybrid power rotary drilling rig, an engine, a generator and a main pump are installed in series, reliability problems are also existed, and the power head is driven by a motor, the impact strength at the moment of starting is inferior to that of the hydraulic motor, so that the soil throwing performance of the power head is poor, and the construction time is additionally prolonged.
Disclosure of Invention
The invention aims to provide a parallel power system of a rotary drilling rig, which has the advantages of good fuel economy, high reliability, high transmission efficiency and good soil throwing performance of a power head.
The invention is realized by adopting the following technical scheme:
a parallel power system for a rotary drilling rig, comprising: the system comprises an engine, a transfer case, a motor driving subsystem, a hydraulic driving subsystem, an energy storage unit and a master controller;
an output shaft of the engine is connected with an input shaft of the transfer case, and the output shaft of the transfer case comprises a transfer case I output shaft and a transfer case II output shaft;
the motor driving subsystem is connected with an I output shaft of the transfer case and is used for lifting and lowering the main winch and recovering the lowering potential energy; the motor driving subsystem comprises a generator, a motor control unit, a motor and a speed reducer; the generator is connected with an I output shaft of the transfer case, and the motor is coaxially connected with the main winch through a speed reducer; the energy storage unit is respectively connected with the generator and the motor through the motor control unit;
the hydraulic driving subsystem is connected with the II output shaft of the transfer case and is used for providing power for the hydraulic device, and the hydraulic driving subsystem comprises a pump which is coaxially connected with the II output shaft of the transfer case.
And the master controller is respectively connected with the engine, the pump, the motor control unit and the energy storage unit in a signal way.
In some embodiments, the motor control unit is respectively connected with the generator, the motor and the energy storage unit, and is used for detecting and controlling the operation state of the motor driving subsystem, and comprises:
after receiving the lifting and lowering instructions of the main winch sent by the master controller, the motor control unit correspondingly changes the load current of the generator and the motor, thereby realizing the main winch action;
and determining the electric energy flow direction among the generator, the motor and the energy storage unit according to the electric energy use requirement.
Further, according to the electric energy demand, the electric energy flow direction among the generator, the motor and the energy storage unit is determined, and the method comprises the following steps:
when the lifting speed on the main winch is high, the power requirement is high, and the generator and the energy storage unit supply power for the motor together;
when the lifting speed of the main winch is low, the power requirement is low, one part of electric energy of the generator is supplied to the motor, and the other part of electric energy charges the energy storage unit;
when the drill rod is lowered, the main winch reversely drags the motor to generate electricity, and the electricity is fed back to the generator and the energy storage unit to provide a part of power for the auxiliary engine.
In some embodiments, when the hydraulic driving subsystem is in light operation, the master controller controls the engine to drive the generator to generate electricity at the same time, so that the engine works in a fuel economy area to achieve the purpose of energy saving.
In some embodiments, the pump comprises a primary pump and a secondary pump; the main pump and the auxiliary pump are coaxially connected with the II output shaft of the transfer case and are respectively used for providing pressure oil for the main hydraulic system and the auxiliary hydraulic system to realize hydraulic driving.
Further, in some embodiments, the main hydraulic system includes a multi-way valve, a power head motor, and a swing motor, and the main pump is connected to the power head motor and the swing motor through the multi-way valve, respectively, where the power head motor is used to drive the power head device, and the swing motor is used to drive the boarding swing device.
In some embodiments, the parallel power system of the rotary drilling rig further comprises an electronic radiator, wherein the electronic radiator is connected with the energy storage unit, and the energy storage unit is used for providing electric energy required by heat dissipation for the electronic radiator; and the electronic radiator is connected with the main controller through signals and is used for receiving a radiating instruction issued by the main controller.
Compared with the prior art, the invention has the beneficial effects that:
1. the pump and the generator are arranged in parallel, so that the axial length is short, and the vibration resistance is high.
2. When the drill rod is lowered, the main winch reversely drags the motor to generate electricity, electric energy is fed back to the generator and the energy storage unit, a part of power is provided for the auxiliary of the engine, and the fuel consumption of the engine is saved.
3. When the engine runs lightly, the engine drives the generator to generate electricity, so that the engine works in a fuel economy area, and the purpose of energy conservation is achieved.
4. Because the hydraulic components such as pumps, motors, balance valves, pipelines, joints and the like in the hydraulic drive system have pressure loss, the transmission efficiency is low, the energy loss of the main hoisting system driven by the motor is small, and the transmission efficiency is high.
5. The power head is driven by a hydraulic motor, so that the impact force at the moment of starting is large, and the soil throwing performance is good.
Drawings
Fig. 1 is a schematic diagram of the system principle of the present invention.
In the figure: 1. an engine; 2. a transfer case; 3. a main pump; 4. a main hydraulic system; 4-1, a multiway valve; 4-2, a power head motor; 4-3, a rotary motor; 5. a sub-pump; 6. a secondary hydraulic system; 7. a generator; 8. a motor control unit; 9. a motor; 10. a speed reducer; 11. a main winch; 12. a master controller; 13. an energy storage unit; 14. a drill rod; 15. a pulley frame; 16. an electronic heat sink.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may also include different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
As shown in fig. 1, a parallel power system of a rotary drilling rig includes: the engine 1, transfer case 2, motor drive subsystem, hydraulic drive subsystem, general controller 12, energy storage unit 13 and electronic radiator 16.
An output shaft of the engine 1 is connected with an input shaft of the transfer case 2, and the output shaft of the transfer case comprises a transfer case I output shaft and a transfer case II output shaft;
the motor driving subsystem is connected with the I output shaft of the transfer case and is used for providing power for the main winch 11, and comprises a generator 7, a motor control unit 8, a motor 9 and a speed reducer 10; the generator 7 is connected with an I output shaft of the transfer case, the motor 9 is coaxially connected with the main winch 11 through the speed reducer 10, and the energy storage unit 13 is respectively connected with the generator 7 and the motor 9 through the motor control unit 8;
the hydraulic driving subsystem is connected with the II output shaft of the transfer case and is used for providing power for the hydraulic working device, and the hydraulic driving subsystem comprises a pump which is coaxially connected with the II output shaft of the transfer case.
In some embodiments, the pump comprises a main pump 3 and a secondary pump 5, and the hydraulic drive subsystem further comprises a main hydraulic system 4 and a secondary hydraulic system 6. The main pump and the auxiliary pump are coaxially connected with the II output shaft of the transfer case and are respectively used for providing pressure oil for the main hydraulic system and the auxiliary hydraulic system, realizing hydraulic driving and providing power for other working devices except the main winch.
Further, the master controller 12 is in signal connection with the engine 1, the main pump 3, the auxiliary pump 5, the motor control unit 8, the energy storage unit 13 and the electronic radiator 16, and is used for signal communication among various elements. Such as, but not limited to: the signals comprise an engine target rotating speed signal, an engine actual rotating speed signal, a main pump control current, a secondary pump control current, a motor control signal, a main winch working mode signal, a voltage signal of an energy storage unit, a charging and discharging state signal of the energy storage unit, a control voltage of an electronic radiator and the like.
Further, the motor control unit 8 is respectively connected with the generator 7, the motor 9 and the energy storage unit 13 by using electric wires for detecting and controlling the operation state of the motor driving subsystem. When the motor control unit receives the lifting and lowering instructions of the main winch sent by the main controller, the motor control unit correspondingly changes the load current of the generator and the motor, so that the main winch is realized. Meanwhile, the motor control unit determines the electric energy flow direction among the generator, the motor and the energy storage unit according to the electric energy use requirement. For example, when the lifting speed on the main winch is fast, the power demand is large, and the generator and the energy storage unit supply power for the motor together; when the lifting speed of the main winch is low, the power requirement is low, the generator only supplies part of electric energy to the motor, and the other part of electric energy can charge the energy storage unit.
In some embodiments, when the drill pipe 14 is lowered, the main winch 11 is driven by the gravity of the drill pipe, the motor is reversely dragged to generate electricity, and the electricity is fed back to the generator and the energy storage unit, and at the moment, the generator is converted into a motor working condition to provide a part of power for the engine assistance. When the engine runs lightly, the engine drives the generator to generate electricity at the same time, so that the engine works in a fuel economy area, the phenomenon that the engine only burns oil and does not do work is avoided, and the energy-saving purpose is achieved.
Further, the main hydraulic system comprises a multi-way valve 4-1, a power head motor 4-2 and a rotary motor 4-3, wherein the main pump is respectively connected with the power head motor 4-2 and the rotary motor 4-3 through the multi-way valve 4-1, the power head motor 4-2 is used for driving a power head device, and the rotary motor 4-3 is used for driving a boarding rotary device. The power head device and the boarding rotary device are driven by a hydraulic motor.
In some embodiments, the parallel power system of the rotary drilling rig, the electronic radiator 16 is connected with an energy storage unit, and the energy storage unit provides electric energy required by heat dissipation for the electronic radiator; the electronic radiator is in signal connection with the overall controller 12 and is used for receiving a radiating instruction issued by the overall controller.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (3)
1. A parallel power system for a rotary drilling rig, comprising: the system comprises an engine, a transfer case, a motor driving subsystem, a hydraulic driving subsystem, an energy storage unit and a master controller;
an output shaft of the engine is connected with an input shaft of the transfer case, and the output shaft of the transfer case comprises a transfer case I output shaft and a transfer case II output shaft;
the motor driving subsystem is connected with an I output shaft of the transfer case and is used for lifting and lowering the main winch and recovering the lowering potential energy; the motor driving subsystem comprises a generator, a motor control unit, a motor and a speed reducer; the generator is connected with an I output shaft of the transfer case, and the motor is coaxially connected with the main winch through a speed reducer; the energy storage unit is respectively connected with the generator and the motor through the motor control unit;
the hydraulic driving subsystem is connected with the II output shaft of the transfer case and is used for providing power for the hydraulic device, and the hydraulic driving subsystem comprises a pump which is coaxially connected with the II output shaft of the transfer case;
the master controller is respectively connected with the engine, the pump, the motor control unit and the energy storage unit in a signal manner;
the motor control unit is connected with the generator, the motor and the energy storage unit respectively and is used for detecting and controlling the running state of the motor driving subsystem and comprises the following components:
after receiving the lifting and lowering instructions of the main winch sent by the master controller, the motor control unit correspondingly changes the load current of the generator and the motor, thereby realizing the main winch action;
according to the electric energy use requirement, determining the electric energy flow direction among the generator, the motor and the energy storage unit;
wherein according to the electric energy demand of using, decide the electric energy flow direction between generator, motor and the energy storage unit three, include: when the lifting speed on the main winch is high, the power requirement is high, and the generator and the energy storage unit supply power for the motor together; when the lifting speed of the main winch is low, the power requirement is low, one part of electric energy of the generator is supplied to the motor, and the other part of electric energy charges the energy storage unit; when the drill rod is lowered, the main winch reversely drags the motor to generate electricity, and the electric energy is fed back to the generator and the energy storage unit to provide a part of power for the auxiliary of the engine;
when the hydraulic driving subsystem is in light operation, the master controller controls the engine to drive the generator to generate electricity at the same time, so that the engine works in a fuel economy area;
the pump comprises a main pump and a secondary pump; the main pump and the auxiliary pump are coaxially connected with the II output shaft of the transfer case and are respectively used for providing pressure oil for the main hydraulic system and the auxiliary hydraulic system to realize hydraulic driving; the main hydraulic system comprises a multi-way valve, a power head motor and a rotary motor, wherein the main pump is respectively connected with the power head motor and the rotary motor through the multi-way valve, the power head motor is used for driving the power head device, and the rotary motor is used for driving the boarding rotary device.
2. The parallel power system of the rotary drilling rig according to claim 1, further comprising an electronic radiator connected with the energy storage unit, wherein the energy storage unit provides electric energy required for heat dissipation to the electronic radiator.
3. The parallel power system of the rotary drilling rig according to claim 2, wherein the electronic radiator is in signal connection with the main controller and is used for receiving a heat dissipation instruction issued by the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838442.3A CN113482521B (en) | 2021-07-23 | 2021-07-23 | Parallel power system of rotary drilling rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110838442.3A CN113482521B (en) | 2021-07-23 | 2021-07-23 | Parallel power system of rotary drilling rig |
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| CN113482521A CN113482521A (en) | 2021-10-08 |
| CN113482521B true CN113482521B (en) | 2024-04-05 |
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| CN202110838442.3A Active CN113482521B (en) | 2021-07-23 | 2021-07-23 | Parallel power system of rotary drilling rig |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115199254A (en) * | 2022-08-15 | 2022-10-18 | 上海中联重科桩工机械有限公司 | Rotary drilling rig power system, rotary drilling rig control method and rotary drilling rig |
| CN115559955A (en) * | 2022-10-28 | 2023-01-03 | 上海中联重科桩工机械有限公司 | Hybrid rotary drilling rig, hydraulic system thereof and control method of hydraulic system |
| CN115653031A (en) * | 2022-12-27 | 2023-01-31 | 徐州徐工矿业机械有限公司 | Power system of large-scale positive shovel type mining excavator |
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| CN102155160A (en) * | 2011-01-29 | 2011-08-17 | 湖南山河智能机械股份有限公司 | Hybrid rotary drilling machine |
| CN202970675U (en) * | 2012-09-29 | 2013-06-05 | 徐州雷曼机械科技有限公司 | Hydraulic control system for rotary expansion device of rotary drilling rig |
| CN110104576A (en) * | 2019-06-04 | 2019-08-09 | 上海中联重科桩工机械有限公司 | Rotary drilling rig master winch control system and rotary drilling rig |
| CN211924055U (en) * | 2019-12-25 | 2020-11-13 | 郑州宇通客车股份有限公司 | Hybrid power system for engineering machinery and hybrid power rotary drilling rig |
| CN112412330A (en) * | 2020-12-07 | 2021-02-26 | 郑州郑宇重工有限公司 | Power system of pure electric direct-drive rotary drilling rig and multi-motor cooperative control algorithm |
| CN112897372A (en) * | 2021-03-25 | 2021-06-04 | 徐州徐工基础工程机械有限公司 | Main hoisting system of rotary drilling rig |
| CN213575414U (en) * | 2020-10-14 | 2021-06-29 | 郑州郑宇重工有限公司 | Multimode hydraulic drive power system |
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2021
- 2021-07-23 CN CN202110838442.3A patent/CN113482521B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155160A (en) * | 2011-01-29 | 2011-08-17 | 湖南山河智能机械股份有限公司 | Hybrid rotary drilling machine |
| CN202970675U (en) * | 2012-09-29 | 2013-06-05 | 徐州雷曼机械科技有限公司 | Hydraulic control system for rotary expansion device of rotary drilling rig |
| CN110104576A (en) * | 2019-06-04 | 2019-08-09 | 上海中联重科桩工机械有限公司 | Rotary drilling rig master winch control system and rotary drilling rig |
| CN211924055U (en) * | 2019-12-25 | 2020-11-13 | 郑州宇通客车股份有限公司 | Hybrid power system for engineering machinery and hybrid power rotary drilling rig |
| CN213575414U (en) * | 2020-10-14 | 2021-06-29 | 郑州郑宇重工有限公司 | Multimode hydraulic drive power system |
| CN112412330A (en) * | 2020-12-07 | 2021-02-26 | 郑州郑宇重工有限公司 | Power system of pure electric direct-drive rotary drilling rig and multi-motor cooperative control algorithm |
| CN112897372A (en) * | 2021-03-25 | 2021-06-04 | 徐州徐工基础工程机械有限公司 | Main hoisting system of rotary drilling rig |
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| CN113482521A (en) | 2021-10-08 |
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