CN116425067A - Wind mechanism and hydraulic control system thereof - Google Patents

Wind mechanism and hydraulic control system thereof Download PDF

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Publication number
CN116425067A
CN116425067A CN202210005766.3A CN202210005766A CN116425067A CN 116425067 A CN116425067 A CN 116425067A CN 202210005766 A CN202210005766 A CN 202210005766A CN 116425067 A CN116425067 A CN 116425067A
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CN
China
Prior art keywords
valve
pressure
telescopic cylinder
pressure oil
communicated
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Pending
Application number
CN202210005766.3A
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Chinese (zh)
Inventor
章钟伟
马静
单晓晨
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Jiangsu Goldwind Science and Technology Co Ltd
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Jiangsu Goldwind Science and Technology Co Ltd
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Application filed by Jiangsu Goldwind Science and Technology Co Ltd filed Critical Jiangsu Goldwind Science and Technology Co Ltd
Priority to CN202210005766.3A priority Critical patent/CN116425067A/en
Publication of CN116425067A publication Critical patent/CN116425067A/en
Pending legal-status Critical Current

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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
    • B66D1/28—Other constructional details
    • B66D1/30—Rope, cable, or chain drums or barrels
    • 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
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • 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
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/42—Control devices non-automatic
    • B66D1/44—Control devices non-automatic pneumatic of hydraulic
    • 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
    • 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
    • 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
    • F15B13/025—Pressure reducing valves
    • 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
    • F15B13/029—Counterbalance valves
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • 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

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

Abstract

The invention discloses a wind-pulling mechanism and a hydraulic control system thereof.

Description

Wind mechanism and hydraulic control system thereof
Technical Field
The invention relates to the technical field of lifting equipment for fan blades, in particular to a wind-pulling mechanism and a hydraulic control system thereof.
Background
The single-machine capacity of the offshore wind turbine generator set in China is gradually increased, the length of the blades of the offshore wind turbine generator set is increased along with the increasing of the lengths of the blades of the offshore wind turbine generator set, the lengths of the blades of the offshore wind turbine generator set are longer than 90 meters, the weight of the blades of the offshore wind turbine generator set exceeds 38 tons, and the installation of the offshore wind turbine generator set on the market cannot be met under the condition that the hanging weight and the hanging height of the offshore wind turbine generator set are limited, so that single-blade hanging becomes a mainstream mode of hanging the offshore wind turbine generator set in the future.
As the length of the blade becomes longer and the weight becomes heavier, the difficulty of hoisting the blade becomes greater and greater. When the single-blade lifting appliance is used for lifting the blades, the lifting appliance and the inclined angle of the blades need to be concerned at any time due to the large windward area of the blades and the lifting appliance, and the wind-holding mechanism is used for carrying out real-time adjustment. The condition that the wire rope of wind mechanism can appear disorder rope in receive and releases the in-process, and light then can influence the regulation to hoist and blade angle, and heavy then can lead to wire rope wearing and tearing even fracture, causes very serious result.
Disclosure of Invention
The invention aims to provide a wind-pulling mechanism capable of solving the rope disorder problem and a hydraulic control system thereof.
The invention provides a wind-pulling mechanism, which comprises a mechanism main body and a winding drum rotatably arranged on the mechanism main body, wherein a steel wire rope is wound on the winding drum; the device also comprises a telescopic cylinder and a limiting part movably connected with the mechanism main body, wherein the limiting part is used for limiting the rope outlet position of the steel wire rope at a preset position; the fixing part of the telescopic cylinder is fixed on the mechanism main body, and the telescopic part is connected with the limiting part; the telescopic cylinder can drive the limiting part to move along with the rope outlet position of the steel wire rope.
According to the invention, the limiting component for restraining the rope outlet position of the steel wire rope is movably connected to the mechanism main body, and the telescopic cylinder is used for driving the limiting component to move along with the rope outlet position of the steel wire rope, so that the steel wire rope is limited at a preset position, the rope disorder problem can be solved, and the telescopic cylinder is simple in driving mode and high in accuracy.
Optionally, the device further comprises an angle detector for detecting the rotation angle of the winding drum, and the telescopic cylinder is controlled to act according to the rotation angle detected by the angle detector and the target parameter.
Optionally, the limiting component is slidably mounted on the mechanism main body.
Optionally, the device further comprises a controller, wherein the controller receives a detection signal of the angle detector, controls the telescopic cylinder to act according to the rotation angle detected by the angle detector and the target parameter, and controls the first cavity and the second cavity of the telescopic cylinder to be simultaneously communicated with the same low-pressure oil circuit when the rotation speed of the winding drum exceeds a preset value.
In addition, the invention also provides a hydraulic control system for controlling the action of the telescopic cylinder in the wind-collecting mechanism, which comprises a high-pressure oil way, a low-pressure oil way, a pressure control part and a reversing valve;
the pressure control component is arranged on the high-pressure oil way, the reversing valve is arranged on the downstream of the pressure control component, and when the reversing valve is positioned at the first position, the high-pressure oil way is communicated with the first cavity of the telescopic cylinder, and the second cavity is communicated with the low-pressure oil way; when the reversing valve is positioned at the second position, the high-pressure oil way is communicated with the second cavity of the telescopic cylinder, and the first cavity is communicated with the low-pressure oil way.
Optionally, the pressure control component comprises a pressure reducing valve and an overflow valve, an outlet of the pressure reducing valve is communicated with a working port of the reversing valve, and the overflow valve is arranged on a communicating pipeline between an overflow port of the pressure reducing valve and the low-pressure oil circuit.
Optionally, the two working ports of the reversing valve are respectively communicated with the first cavity and the second cavity through a first pipeline and a second pipeline, the reversing valve further comprises a shuttle valve, the shuttle valve comprises a first inlet, a second inlet and an outlet, the first inlet and the second inlet are respectively communicated with the first pipeline and the second pipeline, and the outlet is communicated with a low-pressure oil way.
Optionally, the first pipeline and the second pipeline are respectively provided with a first back pressure valve and a second back pressure valve, a first inlet of the shuttle valve is connected to a connecting pipeline between the first back pressure valve and the reversing valve, and a second inlet of the shuttle valve is connected to a connecting pipeline between the second back pressure valve and the reversing valve; the first back pressure valve and the second back pressure valve are respectively internally provided with two flow passages which are connected in parallel and can be communicated reversely through corresponding pressure components arranged on the flow passages.
Optionally, the device further comprises a third pipeline connected between the first cavity and the low-pressure oil way, and a fourth pipeline connected between the second cavity and the low-pressure oil way, wherein the third pipeline and the fourth pipeline are provided with a first control valve and a second control valve, when the rotation speed of the winding drum exceeds a preset value, the first control valve and the second control valve are in a communication state, and the first cavity and the second cavity are simultaneously communicated with the low-pressure oil way through the first control valve and the second control valve respectively; otherwise, the first control valve and the second control valve are in an open state.
Optionally, the reversing valve includes a three-position four-way electric proportional valve, and when the spool rotation speed of the spool exceeds a preset value, the reversing valve is in a third position: and each working port of the reversing valve is disconnected.
Optionally, the hydraulic pump and a pressure oil filter connected to the outlet of the hydraulic pump are further included, and the outlet of the pressure oil filter is communicated with the inlet of the pressure control component.
Drawings
FIG. 1 is a schematic diagram of a wind-collecting mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the relative positions of the telescopic cylinder, the limiting member and the wire rope in one embodiment of the present invention;
FIG. 3 is a schematic diagram of a hydraulic control system in one embodiment of the invention;
FIG. 4 is a logic diagram of the control of the wind-up mechanism according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a wind collecting mechanism according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the relative positions of the telescopic cylinder, the limiting member and the wire rope in one embodiment of the present invention; fig. 3 is a schematic diagram of a hydraulic control system in an embodiment of the invention.
The invention provides a wind-pulling mechanism which comprises a mechanism main body 101, a winding drum 102, a steel wire rope 103, a telescopic cylinder 9 and a limiting part 104.
The reel 102 is rotatably arranged on the mechanism main body 101, the reel 102 is wound with the steel wire rope 103, one end of the steel wire rope 103 is fixed with the reel 102, then the reel 102 is wound with a plurality of circles according to a certain rule, a part of the steel wire rope 103 can extend out of the reel 102, and the length of an extending section of the steel wire rope 103 can be adjusted by rotating the reel 102 according to hoisting requirements. The free end of the wire 103 is connected to a hanging member, such as a hook or the like. The limiting member 104 in the present invention is movably connected to the mechanism body 101, and in one example, the limiting member 104 can reciprocally slide with respect to the mechanism body 101. The main body 101 mainly provides a mounting base for components in the wind-collecting mechanism, and the structure of the main body can be determined according to specific application environments and is not limited herein.
The limiting component 104 is used for limiting the rope outlet position of the steel wire rope 103 to a preset position; the person skilled in the art can plan in advance the predetermined position of the constraint corresponding to the rope-out position according to the actual hoisting situation, and the planning strategy is not disclosed herein and does not affect the understanding and implementation of the technical solution defined herein by the person skilled in the art. The predetermined positions that constrain the payout positions of the wire ropes 103 generally correspond one-to-one with the payout positions of the wire ropes 103.
The fixing part 91 of the telescopic cylinder 9 is fixed on the mechanism main body 101, and the telescopic part 92 is connected with the limiting component 104; as understood in conjunction with fig. 2, the limiting component 104 in the present invention mainly serves to constrain the rope outgoing position of the steel rope 103, where the limiting component 104 may include a limiting hole, and the limiting hole constrains the movement range of the rope portion near the rope outgoing position of the steel rope 103, so as to constrain the position of the steel rope 103. The specific shape of the limiting member 104 is not limited herein as long as it can perform reliable restraint on the payout position of the wire rope 103.
The telescopic cylinder 9 in the invention can drive the limiting component 104 to move along with the rope outlet position of the steel wire rope 103, that is, the limiting component 104 in the invention can relatively move relative to the mechanism main body 101 under the action of the driving force of the telescopic cylinder 9 so as to adapt to the change of the rope outlet position of the steel wire rope 103. Since the wire ropes 103 are arranged in multiple layers on the reel 102 in the radial direction, the rope outlet positions of the wire ropes 103 are reciprocally changed along the axial direction of the reel 102, and correspondingly, the telescopic cylinders 9 drive the limiting members 104 to reciprocally move along the axial direction of the reel 102.
According to the invention, the limiting component 104 for restraining the rope outlet position of the steel wire rope 103 is movably connected to the mechanism main body 101, and the telescopic cylinder 9 is utilized to drive the limiting component 104 to move along with the rope outlet position of the steel wire rope 103, so that the steel wire rope 103 is limited at a preset position, the rope disorder problem can be solved, and the telescopic cylinder 9 is simple in driving mode and high in accuracy.
In one example, the wind-collecting mechanism further comprises an angle detector for detecting the rotation angle of the spool 102, and the telescopic cylinder 9 controls the telescopic cylinder 9 to act according to the rotation angle detected by the angle detector and the target parameter. That is, the angle detector can acquire the rotation angle of the drum 102 in real time, and the controller can acquire the rope-out position of the status wire rope 103 in real time. The target parameter is a length parameter of the steel wire rope 103 which is released or recovered when the initial position reaches the target position or a rotation angle of the winding drum 102, and the length parameter or the rotation angle of the winding drum 102 can be input into the system by an operator according to actual requirements, and can be calculated by the system. When the wire rope 103 is lowered or recovered to the target position, the reel 102 stops rotating, and the controller can calculate the displacement of the extension or retraction of the telescopic cylinder 9 according to the parameters detected by the angle detector, so as to control the extension or retraction of the telescopic cylinder 9.
As described above, the controller may receive the detection signal of the angle detector, and control the telescopic cylinder 9 to act according to the rotation angle detected by the angle detector and the target parameter, and when the rotation speed of the spool 102 exceeds the preset value, the controller controls the first cavity 93 and the second cavity 94 of the telescopic cylinder 9 to simultaneously communicate with the same low pressure oil circuit, that is, when the rotation speed of the spool 102 is relatively fast, the pressures of the two cavities of the telescopic cylinder 9 are the same, and the movable portion 92 may act along with the limiting member 104 to adapt to the requirement of the working condition.
The low-pressure oil passage may be an oil passage that communicates with the oil tank.
The telescopic cylinder 9 may be an oil cylinder or an air cylinder. Taking the telescopic cylinder 9 as an oil cylinder for example, a hydraulic control system for controlling stable and accurate movement of the telescopic cylinder 9 is further provided.
The hydraulic control system provided by the invention comprises a high-pressure oil circuit, a low-pressure oil circuit, a pressure control component and a reversing valve 3. The high-pressure oil path mainly provides power for hydraulic oil flow, and a power source in the high-pressure oil path in one embodiment can be the hydraulic pump 1, and the hydraulic pump 1 provides power for hydraulic oil flow.
The pressure control part is arranged on the high-pressure oil way, and the pressure control part mainly aims at controlling the constant pressure entering the telescopic cylinder 9 so as to ensure that the telescopic cylinder 9 stretches out or recovers at a constant speed. The pressure control member may take various forms, and may be a single pressure valve, such as the pressure reducing valve 11 or the relief valve 10, or may be a composite structure formed by two or more valves, such as a combination of the pressure reducing valve 11 and the relief valve 10, or other forms, or the like. A specific form of the pressure control member will be described in detail later.
The reversing valve 3 is arranged downstream of the pressure control means, and is defined upstream and downstream in relation to the direction of flow of the hydraulic oil in the high-pressure oil circuit, for both means the means through which the hydraulic oil flows first being defined upstream and for the means through which the hydraulic oil flows opposite being defined downstream. When the reversing valve 3 is positioned at the first position, the high-pressure oil way is communicated with the first cavity 93 of the telescopic cylinder 9, and the second cavity 94 is communicated with the low-pressure oil way; when the reversing valve 3 is in the second position, the high-pressure oil path is communicated with the second cavity 94 of the telescopic cylinder 9, and the first cavity 93 is communicated with the low-pressure oil path. The working time of the reversing valve 3 in the first position and the second position can be judged according to the initial rope outlet position and the target rope outlet position of the steel wire rope 103.
The hydraulic control system controls the pressure control component to control the telescopic cylinder 9 to stably move at a constant speed, so that the shaking phenomenon of the steel wire rope 103 is reduced.
The reversing valve 3 in the above embodiment may be an electric proportional valve, for example, a three-position four-way electric proportional valve, but may be other types of reversing valves, for example, a solenoid valve, etc. The technical scheme and the technical effect are further described by taking the reversing valve 3 as a three-position four-way electric proportional valve as an example.
The three-position four-way electric proportional valve comprises a first working port, a second working port, a third working port and a fourth working port, wherein the first working port is communicated with a high-pressure oil way, the second working port is communicated with a low-pressure oil way, the third working port is communicated with a first cavity 93 of the telescopic cylinder 9, and the fourth working port is communicated with a second cavity 94 of the telescopic cylinder 9. When the three-position four-way electric proportional valve is in the first position, the first working port is communicated with the third working port, the second working port is communicated with the fourth working port, and when the three-position four-way electric proportional valve is in the second position, the first working port is communicated with the fourth working port, and the second working port is communicated with the third working port. When in the third position, each working port is disconnected.
In a specific example, the pressure control component includes a pressure reducing valve 11 and an overflow valve 10, and an outlet of the pressure reducing valve 11 is communicated with a working port of the reversing valve 3, as shown in fig. 3, and an outlet of the pressure reducing valve 11 is communicated with a first working port of the three-position four-way electric proportional valve. The pressure reducing valve 11 can ensure that the electric proportional valve is opened linearly, the control flow is more accurate, and therefore the position and the speed of the telescopic cylinder 9 can be controlled more accurately. The relief valve 10 is provided in a communication line between the relief port of the relief valve 11 and the low-pressure oil line.
The overflow valve 10 can further ensure the safety of the hydraulic system, and can discharge the pressure when the pressure of the system is too high, so that the safety of the system operation is ensured.
In one example, the two working ports of the reversing valve 3 communicate with the first and second chambers 93, 94 of the telescopic cylinder 9 via the first and second lines L1, L2, respectively. The hydraulic control system further comprises a shuttle valve 4, the shuttle valve 4 comprises a first inlet P1, a second inlet P2 and an outlet P3, the first inlet P1 and the second inlet P2 are respectively communicated with the first pipeline L1 and the second pipeline L2, and the outlet P3 is communicated with the low-pressure oil way.
In this embodiment, the shuttle valve 4 is further connected to the low-pressure oil path and the pipeline system downstream of the reversing valve 3, and by reasonably setting the opening pressures of the first inlet P1 and the second inlet P2 of the shuttle valve 4, when the reversing valve 3 fails, the hydraulic oil flowing back from the hydraulic cylinder can return to the low-pressure oil path through the shuttle valve 4, so that the safety and reliability of the system are improved.
And the shuttle valve 4 and the pressure control component act together, so that the electric proportional valve can be opened linearly, and the operability is better.
In the invention, a first back pressure valve 5 and a second back pressure valve 6 are respectively arranged on a first pipeline L1 and a second pipeline L2, a first inlet of a shuttle valve 4 is connected with a connecting pipeline between the first back pressure valve 5 and a reversing valve 3, and a second inlet of the shuttle valve 4 is connected with a connecting pipeline between the second back pressure valve 6 and the reversing valve 3; the interiors of the first back pressure valve 5 and the second back pressure valve 6 each include two flow passages which are connected in parallel and which are reversely capable of being conducted through the corresponding pressure members provided thereon.
Specifically, the pressure components on the two parallel and reversely opened flow paths of the first back pressure valve 5 and the second back pressure valve 6 may be a check valve and an overflow valve 10, and taking the first back pressure valve 5 as an example, the flow path in which the check valve is located has a conduction direction as follows: from the reversing valve 3 to the first chamber, the flow passage where the overflow valve 10 is located has a conduction direction of: the first chamber flows to the reversing valve 3.
The back pressure valve improves the rigidity of the hydraulic system, prevents inaccurate positions caused by shaking of the oil cylinder, and further ensures the running stability of the telescopic cylinder 9.
In each of the above embodiments, the hydraulic control system further includes a third pipeline connected between the first cavity and the low-pressure oil line, a fourth pipeline connected between the second cavity and the low-pressure oil line, the third pipeline and the fourth pipeline are provided with a first control valve 7 and a second control valve 8, when the rotation speed of the spool 102 exceeds a preset value, the first control valve 7 and the second control valve 8 are in a communication state, and the first cavity and the second cavity are simultaneously communicated with the low-pressure oil line through the first control valve 7 and the second control valve 8 respectively; otherwise, the first control valve 7 and the second control valve 8 are in the open state.
The first control valve 7 and the second control valve 8 are shown as two-position two-way control valves. When the telescopic cylinder 9 needs to be in a floating state (such as when the rope is rapidly released), the first control valve 7 and the second control valve 8 can be in a communicating state, and the telescopic cylinder can freely float and swing along with external load.
In addition, the outlet of the hydraulic pump 1 in the above embodiments is further provided with a pressure filter 2, the outlet of the pressure filter 2 is communicated with the inlet of the pressure control component, and the pressure filter 2 can filter the hydraulic oil in the system and stabilize the working pressure of the system.
As will be appreciated in connection with fig. 4, in one embodiment, the specific control logic is generally as follows:
s0, pre-storing a corresponding relation module between the rotation angle of the winding drum 102 and the standard extension length of the telescopic part 92 of the telescopic cylinder in the controller;
the rotation angle of the winding drum 102 represents the lower length of the steel wire rope to a certain extent, so that the outlet position of the steel wire rope on the winding drum can be determined;
s1, detecting the rotation angle of the current state of the winding drum 102 through an angle detector, and detecting the extension length of the current state of the telescopic part 92 of the telescopic cylinder through a displacement sensor;
s2, searching the standard extension length of the telescopic part in the corresponding relation module according to the rotation angle of the current state, and controlling the current value of the electric proportional valve according to the standard extension length of the telescopic part so that the extension length of the current state and the standard extension length are within a preset difference range;
the ideal state is to control the current state extension length to be equal to the standard extension length, and of course, in order to improve the control efficiency, the difference between the current state extension length and the standard extension length can be allowed to be within a predetermined difference range, and the predetermined difference range can be reasonably set according to the specific application environment.
S3, judging whether the rotation angle of the winding drum reaches a target angle, if so, executing step S4, otherwise, controlling the winding drum to rotate and continuing to execute step S1.
S4, stopping the rotation of the winding drum.
In the above embodiment, the rotation angle of the winding drum 102 is detected by the angle detector to control the movement displacement of the telescopic cylinder 9, and the control response speed is relatively high.
The above describes in detail one of the embodiments provided by the present invention. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (11)

1. The wind-pulling mechanism comprises a mechanism main body (101) and a winding drum (102) rotatably arranged on the mechanism main body (101), wherein a steel wire rope (103) is wound on the winding drum (102); the device is characterized by further comprising a telescopic cylinder (9) and a limiting component (104) movably connected to the mechanism main body (101), wherein the limiting component (104) is used for restraining the rope outlet position of the steel wire rope (103) at a preset position; the fixing part of the telescopic cylinder (9) is fixed on the mechanism main body (101), and the telescopic part is connected with the limiting part (104); the telescopic cylinder (9) can drive the limiting component (104) to move along with the rope outlet position of the steel wire rope (103).
2. The wind-collecting mechanism according to claim 1, further comprising an angle detector for detecting a rotation angle of the spool (102), the telescopic cylinder (9) controlling the telescopic cylinder (9) to act according to the rotation angle detected by the angle detector and a target parameter.
3. A wind-collecting mechanism according to claim 2, wherein the limiting member (104) is slidably mounted to the mechanism body (101).
4. A wind-collecting mechanism according to claim 2 or 3, further comprising a controller which receives the detection signal of the angle detector, and controls the telescopic cylinder (9) to act according to the rotation angle detected by the angle detector and the target parameter, and when the rotation speed of the winding drum (102) exceeds a preset value, the controller controls the first cavity and the second cavity of the telescopic cylinder (9) to simultaneously communicate with the same low-pressure oil path.
5. A hydraulic control system for controlling the action of a telescopic cylinder (9) in the wind-collecting mechanism according to any one of claims 1 to 4, characterized by comprising a high-pressure oil circuit, a low-pressure oil circuit, a pressure control component and a reversing valve (3);
the pressure control component is arranged on the high-pressure oil way, the reversing valve (3) is arranged on the downstream of the pressure control component, when the reversing valve (3) is positioned at a first position, the high-pressure oil way is communicated with a first cavity (93) of the telescopic cylinder (9), and a second cavity (94) is communicated with a low-pressure oil way; when the reversing valve (3) is positioned at the second position, the high-pressure oil way is communicated with a second cavity (94) of the telescopic cylinder (9), and the first cavity (93) is communicated with the low-pressure oil way.
6. The hydraulic control system according to claim 5, wherein the pressure control means includes a pressure reducing valve (11) and an overflow valve (10), an outlet of the pressure reducing valve (11) communicates with a working port of the reversing valve (3), and the overflow valve (10) is provided on a communication pipe between the overflow port of the pressure reducing valve (11) and the low-pressure oil passage.
7. The hydraulic control system according to claim 6, wherein the two working ports of the reversing valve (3) are respectively communicated with the first cavity (93) and the second cavity (94) through a first pipeline (L1) and a second pipeline (L2), the hydraulic control system further comprises a shuttle valve (4), the shuttle valve (4) comprises a first inlet (P1), a second inlet (P2) and an outlet (P3), the first inlet (P1) and the second inlet (P2) are respectively communicated with the first pipeline (L1) and the second pipeline (L2), and the outlet (P3) is communicated with a low-pressure oil way.
8. The hydraulic control system according to claim 7, wherein the first line (L1) and the second line (L2) are provided with a first back pressure valve (5) and a second back pressure valve (6), respectively, the first inlet (P1) of the shuttle valve (4) is connected to a connecting line between the first back pressure valve (5) and the reversing valve (3), and the second inlet (P2) of the shuttle valve (4) is connected to a connecting line between the second back pressure valve (6) and the reversing valve (3); the first back pressure valve (5) and the second back pressure valve (6) are internally provided with two flow passages which are connected in parallel and can be communicated reversely through corresponding pressure components arranged on the flow passages.
9. The hydraulic control system according to any one of claims 5 to 8, further comprising a third line connected between the first chamber (93) and the low-pressure line, a fourth line connected between the second chamber (94) and the low-pressure line, the third line and the fourth line being provided with a first control valve (7) and a second control valve (8), the first control valve (7) and the second control valve (8) being in a communication state when the rotational speed of the spool (102) exceeds a preset value, the first chamber (93) and the second chamber (94) being simultaneously in communication with the low-pressure line through the first control valve (7) and the second control valve (8), respectively; otherwise, the first control valve (7) and the second control valve (8) are in an open state.
10. A hydraulic control system according to any one of claims 5 to 8, characterized in that the reversing valve (3) comprises a three-position four-way electric proportional valve, the reversing valve (3) being in a third position when the rotational speed of the spool (102) exceeds a preset value, the working ports of the reversing valve (3) being disconnected.
11. The hydraulic control system according to any one of claims 5 to 8, further comprising a hydraulic pump (1) and a pressure oil filter (2) connected to an outlet of the hydraulic pump (1), an outlet of the pressure oil filter (2) being in communication with an inlet of the pressure control member.
CN202210005766.3A 2022-01-04 2022-01-04 Wind mechanism and hydraulic control system thereof Pending CN116425067A (en)

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CN202210005766.3A CN116425067A (en) 2022-01-04 2022-01-04 Wind mechanism and hydraulic control system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210005766.3A CN116425067A (en) 2022-01-04 2022-01-04 Wind mechanism and hydraulic control system thereof

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CN116425067A true CN116425067A (en) 2023-07-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116853973A (en) * 2023-09-05 2023-10-10 河南科技学院 Crane winding drum with steel wire rope detection function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116853973A (en) * 2023-09-05 2023-10-10 河南科技学院 Crane winding drum with steel wire rope detection function
CN116853973B (en) * 2023-09-05 2023-12-05 河南科技学院 Crane winding drum with steel wire rope detection function

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