WO2022041997A1 - Outil de levage de pale et système hydraulique associé - Google Patents

Outil de levage de pale et système hydraulique associé Download PDF

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Publication number
WO2022041997A1
WO2022041997A1 PCT/CN2021/102467 CN2021102467W WO2022041997A1 WO 2022041997 A1 WO2022041997 A1 WO 2022041997A1 CN 2021102467 W CN2021102467 W CN 2021102467W WO 2022041997 A1 WO2022041997 A1 WO 2022041997A1
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WO
WIPO (PCT)
Prior art keywords
oil
oil cylinder
port
arm
blade
Prior art date
Application number
PCT/CN2021/102467
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English (en)
Chinese (zh)
Inventor
章钟伟
张竹
武宁
黄可唯
黄建伟
苏伟
Original Assignee
江苏金风科技有限公司
成都世唯科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏金风科技有限公司, 成都世唯科技有限公司 filed Critical 江苏金风科技有限公司
Priority to KR1020237009526A priority Critical patent/KR20230058651A/ko
Publication of WO2022041997A1 publication Critical patent/WO2022041997A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/445—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated
    • B66C1/447—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated by hydraulic or pneumatic motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/61—Assembly methods using auxiliary equipment for lifting or holding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/406—Transmission of power through hydraulic systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present disclosure relates to the technical field of wind power generation, and in particular, to a blade hoisting tool and a hydraulic system thereof.
  • the length of the blades of offshore units has exceeded 90 meters and the weight is more than 35 tons. Due to the problem of blade weight, the traditional direct-drive unit cranking structure and the double-fed unit cranking structure need to bear more and more loads, which leads to the cranking process.
  • the deformation of the end cover structure of the middle generator (connecting position with the crankshaft) affects the normal operation of the unit, and due to the long blade length, the three-blade installation has a great risk of turning over due to the limitation of the installation ship.
  • the hydraulic system of the existing blade hoisting tool cannot guarantee the safety of the blade hoisting process, and cannot effectively control the rotation of the blade.
  • the hydraulic system of the existing blade lifting tool has poor safety, including poor reliability of the blade lifting tool of the hydraulic system, low operation efficiency, and inability to adjust the clamping force of the blade at any time.
  • An aspect of the present disclosure is to provide a hydraulic system capable of driving three oil cylinders to expand and contract so as to control a blade clamp to clamp a blade.
  • Another aspect of the present disclosure is to provide a blade hoisting tool capable of changing the clamping force for clamping the blade during the blade hoisting process.
  • a hydraulic system for a blade hoisting tool characterized by comprising: a driving unit for driving hydraulic oil in the hydraulic system to form an oil supply path and an oil return path, and passing the oil supply path Supply oil to the oil cylinder or release the hydraulic oil of the oil cylinder through the oil return path, and the oil cylinder includes a first oil cylinder with a first small cavity and a first large cavity, a second oil cylinder with a second small cavity and a second large cavity, and a third oil cylinder with a second small cavity and a second large cavity.
  • the third oil cylinder with the large cavity and the third small cavity; the first pressure maintaining unit is connected between the first oil cylinder and the driving unit to make the first oil cylinder supply oil and return oil; the second pressure maintaining unit is connected between the second oil cylinder and the driving unit. between the driving units so that the second oil cylinder can supply oil and return oil; the third pressure maintaining unit is connected between the third oil cylinder and the driving unit so that the third oil cylinder can supply oil and return oil; the first valve unit, the second valve unit and the The third valve unit, the first valve unit is arranged on the oil supply path and the oil return path of the first oil cylinder, the second valve unit is arranged on the oil supply path and the oil return path of the second oil cylinder, and the third valve unit is arranged on the third On the oil supply path and the oil return path of the oil cylinder, the first oil cylinder, the second oil cylinder and the third oil cylinder are used for driving the blade clamp of the blade hoisting tool to clamp the blade.
  • a blade lifting tool including the above hydraulic system.
  • a single-blade hoisting tool includes the above hydraulic system for the blade hoisting tool, the single-blade hoisting tool further includes a blade clamp, and the blade clamp includes: an upper clamping assembly comprising: A pressing arm and an upper vertical arm extending downward from one end of the pressing arm, wherein the pressing arm can pivot relative to the upper vertical arm; the lower clamping assembly includes a supporting arm and extends upward from one end of the supporting arm The lower vertical arm is connected with the upper vertical arm, and the upper clamping component and the lower clamping component form a space for clamping the blades; the first locking component locks the upper vertical arm relative to the lower vertical arm; the second The locking assembly includes a third oil cylinder for locking the pressing arm relative to the upper vertical arm, wherein the first oil cylinder is connected between the upper vertical arm and the lower vertical arm for driving the upper clamping assembly relative to the lower clamping assembly The assembly moves to adjust the distance between the pressing arm and the supporting arm, and the second
  • the hydraulic system according to the embodiment of the present disclosure can perform a clamping operation on the blade, and can control the clamping force within a certain range.
  • the hydraulic system according to the embodiment of the present disclosure can prevent the oil pressure of the hydraulic system from continuously decreasing due to leakage of hydraulic elements.
  • the hydraulic system according to the embodiment of the present disclosure can prevent the shock caused by the jerky movement of the clamping cylinder.
  • the blade hoisting jig according to the embodiment of the present disclosure is adapted to hoist at least a single blade of an offshore wind turbine.
  • FIG. 1 is a schematic diagram of a hydraulic system according to an embodiment of the present disclosure
  • FIG. 2 is a perspective view of a blade lifting tool according to an embodiment of the present disclosure
  • FIG. 3 is a perspective view of a blade clamp according to an embodiment of the present disclosure.
  • FIG. 4 is a perspective view of a clamp assembly according to a first embodiment of the present disclosure
  • FIG. 5 is an exploded perspective view of the clamp assembly according to the first embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a clamp assembly according to a second embodiment of the present disclosure.
  • the hydraulic system according to the embodiment of the present disclosure can drive three oil cylinders to expand and contract.
  • the hydraulic system according to the embodiment of the present disclosure may be adapted to drive the clamping mechanism of the blade hoisting tool, thereby clamping the blade during the hoisting process.
  • FIG. 1 is a schematic diagram of a hydraulic system according to an embodiment of the present disclosure.
  • the hydraulic system may include driving units 4 and 04 , a first pressure maintaining unit, a second pressure maintaining unit, a third pressure maintaining unit, a first valve unit 28 , a second valve unit 31 , and a third valve unit 35.
  • the driving units 4 and 04 may be power elements of the hydraulic system, and may be, for example, hydraulic pumps, etc.
  • the driving units 4 and 04 may drive hydraulic oil in the hydraulic system to form an oil supply path and an oil return path, and send the oil to the hydraulic system through the oil supply path. Oil supply to the cylinder or release of hydraulic oil from the cylinder through the return path.
  • the hydraulic system according to the embodiment of the present disclosure may be used to drive at least three oil cylinders to telescopic.
  • the hydraulic system according to the present disclosure can control the sequential expansion and contraction of three oil cylinders.
  • the number of the locking cylinders may be two or more.
  • the above-mentioned oil cylinders may include three oil cylinders, for example, three oil cylinders (the first oil cylinder 115 , the second oil cylinder 117 and the third oil cylinder 1182 ) as shown in FIG. 1 .
  • the three oil cylinders can be used to drive the blade jig of the blade hoisting tool to clamp the blade.
  • the first oil cylinder 115 has a first small cavity and a first large cavity
  • the second oil cylinder 117 has a second small cavity and a second large cavity
  • the third oil cylinder 1182 has a third large cavity and a third small cavity, wherein the small cavity is There is a rod cavity for installing the piston rod, and the large cavity is a rodless cavity.
  • the first small cavity and the first large cavity of the first oil cylinder 115, the second small cavity and the second large cavity of the second oil cylinder 117, and the third large cavity and the third small cavity of the third oil cylinder 1182 can be separated by the piston open.
  • oil can be supplied to the second small cavity and the hydraulic oil in the second large cavity can be released, and when the piston rod of the second oil cylinder 117 needs to be extended , which can supply oil to the second large cavity and release the hydraulic oil in the second small cavity.
  • the oil supply and return method of the large and small cavities can be the same as that of the first oil cylinder 115 and the second oil cylinder 117 .
  • the drive units 4 and 04 can supply the hydraulic oil of the hydraulic oil tank 01 to the various elements of the hydraulic system, and in addition, the hydraulic oil of the hydraulic system can also be collected in the hydraulic oil tank.
  • a pressure maintaining unit may be provided between the oil cylinders and the driving unit.
  • the first pressure maintaining unit can be connected between the first oil cylinder 115 and the driving units 4 and 04, and can communicate with the first large cavity and the first small cavity, so that the first oil cylinder 115 can supply oil and return oil.
  • the second pressure maintaining unit may be connected between the second oil cylinder 117 and the driving units 4 and 04 and may be communicated with the second large cavity and the second small cavity, so that the second oil cylinder 117 can supply oil and return oil.
  • the third pressure maintaining unit may be connected between the third oil cylinder 1182 and the driving units 4 and 04 and may be communicated with the third large cavity and the third small cavity, so that the third oil cylinder 1182 can supply oil and return oil.
  • the "communication" between the two components refers to the formation of a flow path of hydraulic oil between the two components, which may refer to the direct connection or indirect connection of the two components.
  • the pressure maintaining unit may include a balance valve or a hydraulic lock, etc.
  • a pressure maintaining unit such as a balance valve or a hydraulic valve
  • components such as an accumulator may not be included, thereby reducing the complexity of the oil circuit and reducing costs.
  • the first pressure maintaining unit may include a first two-way hydraulic lock 29, and the first two-way hydraulic lock 29 may be provided on the oil supply path and the oil return path of the first oil cylinder 115.
  • the second pressure maintaining The unit may include a second two-way hydraulic lock 32, the second two-way hydraulic lock 32 may be disposed on the oil supply path and the oil return path of the second oil cylinder 117, and the third pressure maintaining unit may include a third two-way hydraulic lock 36.
  • the third two-way hydraulic lock 36 The hydraulic lock 36 is provided on the oil supply path and the oil return path of the third oil cylinder 1182 .
  • a throttle valve may be designed for the oil circuit of the first oil cylinder 115 .
  • the hydraulic system according to the embodiment of the present disclosure may further include a first one-way throttle valve 27 and a second one-way throttle valve 41 .
  • the first one-way throttle valve can be connected between the first two-way hydraulic lock 29 and the first large cavity
  • the second one-way throttle valve 41 can be connected between the first two-way hydraulic lock 29 and the first small cavity.
  • the design of the throttle valve and the hydraulic lock can improve the stability of the hydraulic oil of the first oil cylinder, maintain pressure, and improve the stability of the expansion and contraction of the first oil cylinder.
  • a redundant design can be made for the first cylinder.
  • the redundant design oil circuit of the first oil cylinder may be exactly the same as the main oil circuit of the first oil cylinder, which will not be repeated here.
  • the hydraulic lock in the redundantly designed oil circuit of the first oil cylinder can be replaced with a balance valve (eg, a two-way balance valve).
  • the main oil circuit of the first oil cylinder can also use a balance valve, for example, the hydraulic lock on the main oil circuit of the first oil cylinder can be replaced with a two-way balance valve, or two one-way balance valves independent of each other, the balance valve Large and small cavities that can be rigidly attached to the cylinder.
  • the two balancing valves are independent of each other means that the two balancing valves are two separate and independently manufactured components, not that there is no hydraulic oil flow between the two balancing valves.
  • the connection between the pressure holding element and the large and small cavities of the oil cylinder can be a rigid connection.
  • the first valve unit 28 , the second valve unit 31 and the third valve unit 35 can all be provided on the oil supply path and the oil return path, for example, the first valve unit 28 can be provided on both the first oil cylinder
  • the oil supply path of 115 is also arranged on the oil return path of the first oil cylinder 115.
  • the second valve unit 31 can be arranged not only on the oil supply path of the second oil cylinder 117, but also on the oil return path of the second oil cylinder 117. on the oil return path.
  • the third valve unit 35 may be provided on both the oil supply path of the third oil cylinder 1182 and the oil return path of the third oil cylinder 1182 .
  • first valve unit 28 can be connected between the first two-way hydraulic lock 29 and the drive units 4 and 04
  • second valve unit 31 can be connected between the second two-way hydraulic lock 32 and the drive units 4 and 04
  • first The three-valve unit 35 may be connected between the third two-way hydraulic lock 36 and the drive units 4 and 04 .
  • the first valve unit 28, the second valve unit 31 and the third valve unit 35 may comprise a single hydraulic valve, may be a unit comprising a plurality of hydraulic valves, or may be separate components integrating a plurality of hydraulic valves.
  • the first valve unit 28 , the second valve unit 31 , and the third valve unit 35 may include directional valves (eg, electro-proportional directional control valves), and the first valve unit 28 , the second valve unit 31 , and the third valve unit 35 are all A multi-position, multi-port reversing valve may be included.
  • the first valve unit 28 may include a first electrical proportional reversing valve
  • the second valve unit 31 may include a second electrical proportional reversing valve
  • the third valve unit 35 may include a third electrical proportional reversing valve
  • the first electrical proportional reversing valve may have pressure compensators.
  • the first valve unit 28 , the second valve unit 31 and the third valve unit 35 may also be common reversing valves.
  • the first valve unit 28 , the second valve unit 31 and the third valve unit 35 may include a first 4/3-way reversing valve, a second 4/3-way reversing valve, and a third 4/3-way reversing valve, respectively.
  • the first 4/3-way reversing valve may have a first P port, a first T port, a first A port and a first B port
  • the second 4/3-way reversing valve may have a second P port, a second T port port, the second port A and the second port B
  • the third three-position four-way reversing valve may have the third port P, the third port T, the third port A and the third port B.
  • the first P port, the second P port and the third P port can be communicated with the drive units 4 and 04
  • the first T port, the second T port and the third T port can be communicated with the hydraulic oil tank of the hydraulic system
  • the second A port and the third A port can be communicated with the A1 port of the first two-way hydraulic lock 29, the A1 port of the second two-way hydraulic lock 32, and the A1 port of the third two-way hydraulic lock 36, respectively.
  • the second B port and the third B port can be respectively communicated with the B1 port of the first two-way hydraulic lock 29, the B1 port of the second two-way hydraulic lock 32 and the B1 port of the third two-way hydraulic lock 36, and A2 of the first two-way hydraulic lock 29.
  • the port, the A2 port of the second two-way hydraulic lock 32 and the A2 port of the third two-way hydraulic lock 36 can be communicated with the first small cavity, the second small cavity and the third small cavity respectively, and the B2 port of the first two-way hydraulic lock 29,
  • the B2 port of the second two-way hydraulic lock 32 and the B2 of the third two-way hydraulic lock 36 may be communicated with the first large cavity, the second large cavity and the third large cavity, respectively.
  • the valve unit and pressure keeping unit can be regarded as hydraulic components on the cylinder side.
  • the oil supply inlets of the plurality of valve units may have a common node (eg, a first common node F).
  • the first valve unit 28 which is a three-position four-way reversing valve, to make it switch to the left.
  • the first valve unit 28 The first P port communicates with the first B port, the first A port communicates with the first T port, and the oil supply path is drive unit ⁇ first P port ⁇ first B port ⁇ first two-way hydraulic lock 29 ⁇ first one-way Throttle valve 27 ⁇ first large cavity, and the oil return path is first small cavity ⁇ second one-way throttle valve 41 ⁇ first A port ⁇ first T port ⁇ hydraulic oil tank.
  • the first oil cylinder 115 When the first oil cylinder 115 needs to be retracted, power can be supplied to the first valve unit 28 to reverse the direction to the right.
  • the first P port is communicated with the first A port
  • the first B port is communicated with the first T port
  • the oil supply path is the drive unit ⁇ the first P port ⁇ the first A port ⁇ the first two-way hydraulic lock 29 ⁇ the second one-way throttle valve 41 ⁇ the first small cavity
  • the oil return path is the first large cavity ⁇ the first One-way throttle valve 27 ⁇ first two-way hydraulic lock 29 ⁇ first B port ⁇ first T port ⁇ hydraulic oil tank.
  • the second valve unit 31 which is a three-position, four-way reversing valve, to make it switch to the left.
  • the second P port of the second valve unit 31 is connected to the The two B ports are connected, the second A port is connected with the second T port, the oil supply path is the drive unit ⁇ the second P port ⁇ the second B port ⁇ the second two-way hydraulic lock 32 ⁇ the second large cavity, and the oil return path is the first The second small cavity ⁇ the second two-way hydraulic lock 32 ⁇ the second port A ⁇ the second port T ⁇ the hydraulic oil tank.
  • the second oil cylinder 117 When the second oil cylinder 117 needs to be retracted, power can be supplied to the second valve unit 31 to reverse the direction to the right.
  • the second P port is communicated with the second A port
  • the second B port is communicated with the second T port
  • the oil supply path is the drive unit ⁇ the second P port ⁇ the second A port ⁇ the second two-way hydraulic lock 32 ⁇ the second small cavity
  • the oil return path is the second large cavity ⁇ the second two-way hydraulic lock 32 ⁇ the second B port ⁇ Second T port ⁇ Hydraulic oil tank.
  • the manner of supplying and returning the hydraulic oil when the third oil cylinder 1182 extends and retracts can be the same as that of the second oil cylinder 117 , which will not be repeated here.
  • the hydraulic system according to the embodiment of the present disclosure may further include a control unit, and the control unit may be configured to control the driving units 4 and 04 , the first valve unit 28 , the second valve unit 31 and the third valve unit 35 to control the first valve unit 31 and the third valve unit 35 .
  • the oil cylinder to the third oil cylinder are operated sequentially.
  • the first oil cylinder 115 and the second oil cylinder 117 can be controlled to extend and retract to a predetermined position, and then the third oil cylinder 1182 can be controlled to extend to lock the clamping mechanism of the blade hoisting tool.
  • the predetermined positions of the first oil cylinder 115 and the second oil cylinder 117 may be determined according to the size of the blade (eg, the diameter of the blade at the position to be clamped), for example, the expansion and contraction of the first oil cylinder 115 to the predetermined position may refer to the first oil cylinder 115 is telescopic to the extent that the upper clamping assembly and the lower clamping assembly can be opened and closed enough to accommodate the blades, and the second oil cylinder 117 telescopic to a predetermined position can mean that the second oil cylinder 117 is telescopic to make the upper clamping assembly and the lower clamping assembly to the blade.
  • the clamping force is sufficient to ensure the normal hoisting position of the blade.
  • the first oil cylinder 115 can be controlled to expand and contract first, and then the second oil cylinder 117 can be controlled to expand and contract, or the first oil cylinder 115 and the second oil cylinder 117 can be controlled to expand and contract at the same time.
  • the control unit may be implemented by hardware such as an integrated circuit, or by a combination of hardware and software. Although the control unit is not specifically shown in the drawings, as an example, when the hydraulic system is used to control the cylinders of the blade lifting tool, the control unit may be part of the blade lifting tool.
  • control unit can control various controllable components in the hydraulic system (eg, solenoid valves, reversing valves, drive units, etc.) to power or de-energize (or change their working mode), or send control commands to the controllable components , make the first oil cylinder, the second oil cylinder and the third oil cylinder expand and contract, and finally control the clamping mechanism of the blade hoisting tool to clamp the blade.
  • various controllable components in the hydraulic system eg, solenoid valves, reversing valves, drive units, etc.
  • redundant oil circuit design can be performed for the first oil cylinder, the second oil cylinder, and the third oil cylinder, so as to improve the safety of the system.
  • the oil supply and return method of the redundant design oil circuit is the same as that of the main oil circuit, and the structure of the redundant design oil circuit is also the same as that of the corresponding main oil circuit, which will not be repeated here.
  • the pressure holding unit, valve unit, solenoid valve, etc. can be regarded as hydraulic components on the cylinder side.
  • the hydraulic components on the cylinder side and the corresponding oil circuit can be designed with redundancy.
  • the oil circuit on the hydraulic tank side can also be redundant.
  • Other designs, for example, a one-way valve may be provided for the oil supply path of the hydraulic pump, and a relief valve may be provided between the supply return path and the oil return path.
  • the output port of the driving unit 04 may be connected to the inlet of the first check valve 07, and the outlet of the first check valve 07 may be connected to a common oil supply node (first common node F) between the respective valve units.
  • first common node F a common oil supply node
  • a first shut-off valve may be provided between the first check valve 07 and the common fuel supply node.
  • a second shut-off valve may be provided between the second one-way valve 7 and the common fuel supply node.
  • the first relief valve 6 may be provided between the node between the first check valve 07 and the drive unit 04 and the oil return path of the hydraulic oil tank, and may be provided at the node between the second check valve 7 and the drive unit 4 A second relief valve 06 is provided between it and the oil return path of the hydraulic oil tank.
  • the oil return filter 5 can be provided on the oil return path of the hydraulic oil tank, and the supply oil filters 02 and 2 can be provided on the oil supply path of the hydraulic oil tank, and the air filter 3 can also be provided on the hydraulic oil tank.
  • auxiliary components eg, stop valve, check valve, pressure sensor, oil filter
  • the hydraulic system according to the embodiment of the present disclosure may further include an accumulator 24 and a pressure sensor 25, and both the accumulator 24 and the pressure sensor 25 may be connected to the first large cavity of the first oil cylinder 115 and the first pressure maintaining unit Node E between.
  • the accumulator 24 can supplement the pressure of the oil circuit of the first oil cylinder according to the oil pressure detected by the pressure sensor 25, so as to ensure the stable expansion and contraction of the first oil cylinder.
  • the hydraulic system according to the embodiment of the present disclosure can be used to drive at least three oil cylinders of the blade hoisting tool to telescopic.
  • the hydraulic system according to the embodiments of the present disclosure may be used for the clamping mechanism of the blade hoisting tool to clamp the blade.
  • the following describes a vane hoisting tool (eg, a single vane hoisting tool) to which the hydraulic system of the present disclosure is applicable.
  • FIG. 2 is a perspective view of a blade lifting tool according to an embodiment of the present disclosure
  • FIG. 3 is a perspective view of a clamping mechanism according to an embodiment of the present disclosure
  • FIG. 4 is a perspective view of a clamping assembly according to the first embodiment of the present disclosure
  • 5 is an exploded perspective view of the clamp assembly according to the first embodiment of the present disclosure
  • FIG. 6 is a schematic view of the clamp assembly according to the second embodiment of the present disclosure.
  • Blade lifting jigs may include the hydraulic systems described above.
  • the hydraulic system can be used to drive the clamping mechanism to clamp the blade, and can change the clamping force of the clamping blade.
  • a blade lifting tool may include a clamping mechanism.
  • the blade hoisting tool may further include a hanger 200, a pitch rotation mechanism 400 and a counterweight unit 1000.
  • the counterweight unit 1000 may be connected to the hanger 200.
  • the counterweight unit 1000 may be fixedly connected to one end of the telescopic member 300.
  • the telescopic member 300 The other end of the blade may be connected to the hanger 200 , and the pitch rotation mechanism 400 may be used to adjust the inclination angle or pitch angle of the blade, and may be connected to the hanger 200 .
  • the hanger 200 may include a hanger bar 210, a hanging point connecting beam 220, and a lifting lug 230, and a pitch rotation mechanism 400 may be disposed below the hanging point connecting beam 220, and may be connected to the blade clamp.
  • the pitch rotation mechanism 400 can drive the blade clamp to rotate in the air, so as to adjust the pitch angle of the blade.
  • the clamping mechanism may include a main beam 120 and blade clamps 100 disposed at both ends of the main beam 120 , and the blade clamp may include an upper clamping assembly, a lower clamping assembly, a first locking assembly 116 and a second locking assembly Component 118 .
  • the hanger 200 may also include a pitch drive assembly that rotates the clamping mechanism together with the blade about an axis, which can adjust the pitch angle of the blade to facilitate installation of the blade.
  • the upper clamping assembly may include a pressing arm 111 and an upper vertical arm 112 , the pressing arm 111 can pivot relative to the upper vertical arm 112 and can press the blade, and the upper vertical arm 112 can One end of the pressing arm 111 extends downward.
  • the pressing arm 111 can be pivoted relative to the upper vertical arm 112, which can increase the opening and closing degree of the blade clamp, and is convenient for clamping the blade.
  • the upper part of the upper vertical arm 112 is provided with a pivot shaft 1121 , and the pressing arm 111 can be connected to the upper vertical arm 112 through the pivot shaft 1121 .
  • the lower clamping assembly may include a supporting arm 113 and a lower upright arm 114, the lower upright arm 114 may extend upward from one end of the supporting arm 113, and the lower upright arm 114 and the upper upright arm 112 may be connected to each other.
  • the upper clamping assembly and the lower clamping assembly may form a space for clamping the blades.
  • the first locking assembly 116 can lock the upper vertical arm 112 relative to the lower vertical arm 114 , and the locking of the upper vertical arm 112 relative to the lower vertical arm 114 can prevent loosening when the upper and lower clamping assemblies clamp the blade.
  • the second locking assembly 118 may include a third oil cylinder 1182 and may be used to lock the pressing arm 111 relative to the upper upright arm 112 . As described above, since the pressing arm 111 can be pivoted, the second locking assembly 118 locks the pressing arm 111 to prevent the pressing arm 111 from opening and closing unexpectedly, thereby reducing safety hazards.
  • the first oil cylinder 115 can be connected between the upper vertical arm 112 and the lower vertical arm 114 for driving the upper clamping assembly to move relative to the lower clamping assembly, so as to adjust the distance between the pressing arm 111 and the supporting arm 113 .
  • the first oil cylinder 115 can be extended to increase the distance between the upper vertical arm 112 and the lower vertical arm 114 , and the first oil cylinder 115 can be retracted to reduce the distance between the upper vertical arm 112 and the lower vertical arm 114 .
  • one end (eg, the upper end) of the first oil cylinder 115 may be connected to the upper vertical arm 112 , and the other end (eg, the lower end) of the first oil cylinder 115 may be connected to the lower vertical arm 114 .
  • the first oil cylinder 115 drives the upper vertical arm 112 to move to a predetermined position, it can be locked by the first locking assembly 116 .
  • the first locking assembly 116 may include a first locking piece 1161, a second locking piece 1162 and a first driving member 1163, the first locking piece 1161 may be mounted on one of the lower upright arm 114 and the upper upright arm 112, the second lock The piece 1162 may be mounted on the other of the lower riser 114 and the upper riser 112 .
  • the second locking piece 1162 may be opposite to the first locking piece 1161 and may have a locking position and an unlocking position, in which the second locking piece 1162 is combined with the first locking piece 1161 to lock the upper and lower clamping assemblies In the unlocked position, the second locking member 1162 can be disengaged from the first locking member 1161 , so that the upper vertical arm 112 can move relative to the lower vertical arm 114 .
  • the first driving member 1163 may be connected with the second locking member 1162 for driving the second locking member 1162 to move to at least one of the locking position and the unlocking position.
  • the first driving member 1163 may be an oil cylinder, and may be a fourth oil cylinder other than the above-mentioned three oil cylinders, the fourth oil cylinder may be a locking oil cylinder, and its driving oil circuit may be the same as that of the third oil cylinder 1182 .
  • the first locking member 1161 may be a long rack and may extend along the direction in which the upper vertical arm 112 moves relative to the lower vertical arm 114
  • the second locking member 1162 may be a short rack and may be connected with Opposite to the long rack, the second locking member 1162 can move in a direction perpendicular to the direction in which the upper vertical arm 112 moves relative to the lower vertical arm 114 under the driving of the first driving member 1163.
  • the short rack and The long racks are meshed with each other, and the short rack is provided at one end of the first driving member 1163 , for example, the short rack may be provided at one end of the piston rod of the first driving member 1163 .
  • the pressing arm 111 may be connected to the upper standing arm 112 through a pivot shaft 1121 .
  • the second oil cylinder 117 can drive the pressing arm 111 to rotate relative to the upper vertical arm 112 around the pivot axis 1121, so that the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 is changed (for example, The tilt angle can vary from greater than 90 degrees to less than 90 degrees).
  • One end (eg, the lower end) of the second oil cylinder 117 may be hinged with the lower part of the upper vertical arm 112 , and the other end (eg, the upper end) of the second oil cylinder 117 may be hinged with the end of the pressing arm 111 , thereby driving the pressing arm 111 It rotates relative to the upper upright arm 112 around the pivot axis 1121 .
  • the second oil cylinder 117 can be extended to increase the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 , and the second oil cylinder 117 can be retracted to reduce the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 .
  • control unit may control the power supply to the second valve unit 31 , for example, to change the direction of the second valve unit 31 to the left, so as to increase the inclination angle between the pressing arm 111 and the upper vertical arm 112 .
  • the second oil cylinder 117 When the second oil cylinder 117 is retracted to a predetermined position, the second oil cylinder can be restricted from retracting by the second locking assembly 118 .
  • the second locking assembly 118 may also include a stop for limiting retraction of the second cylinder 117 .
  • the stop part may be a locking wedge 1181
  • the locking wedge 1181 may have a locking position and an unlocking position, in the locking position, the locking wedge 1181 may abut against the upper end of the second oil cylinder 117 to limit the retraction of the upper end , in the unlocking position, the locking wedge 1181 is disengaged from the upper end of the second oil cylinder 117, and the third oil cylinder 1182 can be installed on the pressing arm 111 for driving the locking wedge 1181 to move to at least one of the locking position and the unlocking position place.
  • the locking wedge 1181 may have an inclined surface 1181 a, and in the locking position, the inclined surface 1181 a of the locking wedge 1181 abuts against the lower portion of the upper end of the second oil cylinder 117 in the direction in which the upper end of the second oil cylinder 117 is retracted, so as to limit the movement of the second oil cylinder 117 .
  • the upper end is retracted.
  • the second locking assembly 118 may further include a support frame 1183 , the support frame 1183 may be installed on the upper part of the upper vertical arm 112 , the locking wedge 1181 may be installed on the support frame 1183 , and can be along one end close to or away from the second oil cylinder 117 move in the direction.
  • the support frame 1183 may be formed with a groove 1184 extending along the telescopic stroke of one end of the second oil cylinder 117 to guide the movement trajectory of the one end of the second oil cylinder 117, and after one end of the second oil cylinder 117 is retracted, the groove 1184 is recessed.
  • the bottom of slot 1184 supports the one end.
  • the stopper may also include an eccentric 1280 and a baffle 1281.
  • the third oil cylinder 1182 drives the eccentric 1280 to move.
  • the baffle 1281 can be squeezed with the eccentric wheel 1280 to lock the blade clamping.
  • the third oil cylinder 1182 can push and pull the eccentric wheel 1280, thereby realizing the clamping opening. release.
  • control unit can control the supply of power to the third valve unit 35, for example, to change the direction of the third valve unit 35 to the left, so as to control the extension of the third oil cylinder 1182, thereby driving the eccentric wheel 1280 to move, and the eccentric wheel 1280 is blocked by the baffle plate 1281 squeeze to lock.
  • the control unit may be configured to control the first valve unit 28 , the second valve unit 31 and the third valve unit 35 to supply power to control the clamping mechanism to clamp the blades, and to control the telescopic degree of each oil cylinder to adjust the clamping force.
  • a blade lifting tool (eg, a single blade lifting tool) according to an embodiment of the present disclosure may further include a pressure sensor for sensing the clamping force of the upper and lower clamping assemblies on the blade, and the pressure sensor may Installed on the pressing arm 111 or the supporting arm 113 .
  • the control unit may be configured to control the power supply to the first valve unit 28 to adjust the distance between the pressing arm 111 and the supporting arm 113 .
  • the control unit may control power supply to the second valve unit 31 and power off the first valve unit 28 in response to the clamping force reaching the first predetermined value to adjust the inclination angle of the pressing arm 111 relative to the upper vertical arm 112 .
  • the control unit may control power to the third valve unit 35 and power off the second valve unit 31 in response to the clamping force reaching the second predetermined value, so as to lock the pressing arm 111 relative to the upper vertical arm 112 .
  • the hydraulic system according to the embodiment of the present disclosure can simultaneously drive three oil cylinders to expand and contract.
  • the hydraulic system according to the embodiment of the present disclosure can prevent the follow-up of the three oil cylinders, and can take both safety and energy saving into consideration.
  • the hydraulic system according to the embodiment of the present disclosure can drive the clamping mechanism of the blade hoisting tool to clamp the blade, and can control the clamping force within a certain range.
  • the hydraulic system according to the embodiment of the present disclosure can prevent the system oil pressure from continuously decreasing due to leakage of hydraulic elements.
  • the hydraulic system according to the embodiment of the present disclosure can prevent the shock caused by the jerky movement of the clamping cylinder.
  • the blade hoisting jig according to the embodiment of the present disclosure is adapted to hoist at least a single blade of an offshore wind turbine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un outil de levage de pale et un système hydraulique associé. Le système hydraulique comprend : des unités d'entraînement (4, 04), qui entraînent de l'huile hydraulique dans le système hydraulique pour former des trajets d'alimentation d'huile et des trajets de retour d'huile, et qui fournissent de l'huile à des cylindres à huile par le biais des trajets d'alimentation d'huile ou libèrent l'huile hydraulique dans les cylindres à huile par le biais des trajets de retour d'huile, les cylindres à huile comprenant un premier cylindre à huile (115), un deuxième cylindre à huile (117), et un troisième cylindre à huile (1182) ; une première unité de maintien de pression, reliée entre le premier cylindre à huile (115) et les unités d'entraînement (4, 04) pour permettre une alimentation d'huile et un retour d'huile du premier cylindre à huile (115) ; une deuxième unité de maintien de pression, reliée entre le deuxième cylindre à huile (117) et les unités d'entraînement (4, 04) pour permettre une alimentation d'huile et un retour d'huile du deuxième cylindre à huile (117) ; une troisième unité de maintien de pression, reliée entre le troisième cylindre à huile (1182) et les unités d'entraînement (4, 04) pour permettre une alimentation d'huile et un retour d'huile du troisième cylindre à huile (1182) ; et une première unité formant vanne (28), une deuxième unité formant vanne (31), et une troisième unité formant vanne (35), mises en œuvre respectivement sur les trajets d'alimentation d'huile et les trajets de retour d'huile du premier cylindre à huile (115), du deuxième cylindre à huile (117), et du troisième cylindre à huile (1182), le premier cylindre à huile (115), le deuxième cylindre à huile (117) et le troisième cylindre à huile (1182) étant utilisés pour entraîner des brides de pale de l'outil de levage de pale pour serrer une pale.
PCT/CN2021/102467 2020-08-26 2021-06-25 Outil de levage de pale et système hydraulique associé WO2022041997A1 (fr)

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WO2023052655A1 (fr) * 2021-09-29 2023-04-06 Optimus Crane, S.L. Dispositif et procédé de retenue de charges et système d'élévation de charges
CN114233707A (zh) * 2021-11-08 2022-03-25 中船华南船舶机械有限公司 一种叶片安装盘车的液压系统的控制方法

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