CN112174000B - Double-hydraulic winch lifting control device - Google Patents
Double-hydraulic winch lifting control device Download PDFInfo
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- CN112174000B CN112174000B CN202011061344.5A CN202011061344A CN112174000B CN 112174000 B CN112174000 B CN 112174000B CN 202011061344 A CN202011061344 A CN 202011061344A CN 112174000 B CN112174000 B CN 112174000B
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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
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- 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
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- 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
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a double-hydraulic winch lifting control device, which realizes the functions of synchronously lifting and lowering a drilling machine by switching a reversing control sheet to supply oil when the drilling machine is lifted and lowered; in the process of lifting and lowering the drilling machine, a synchronous deviation value is displayed in real time through a synchronous controller, and a reversing control sheet is operated to perform displacement compensation on a single hydraulic winch so as to enable the single hydraulic winch to synchronously move upwards or downwards; when the reversing control piece is restored to the middle position, the oil way is decompressed, and the hydraulic winch brakes; the reversing control sheet can also control a single hydraulic winch. The hydraulic winch synchronous control system has the hydraulic winch synchronous lifting and lowering functions and the hydraulic winch terminal point automatic compensation synchronous deviation function, can realize independent control on a single hydraulic winch, meets the installation requirement of a drilling machine, and has a manual and automatic double braking system, so that the safety problem in the lifting and lowering process of the drilling machine is guaranteed.
Description
Technical Field
The invention belongs to the technical field of petroleum drilling and production machinery, and particularly relates to a lifting control device of a double-hydraulic winch.
Background
As a large-tonnage device, an oil rig can safely and stably lift and lower under the condition of heavy load. The lifting and the lowering of the traditional drilling machine are mainly realized by adopting a drilling main winch, the drilling machine can be lifted and lowered only after the equipment such as machinery, electric control equipment and the like are installed and debugged on site, but along with the development of drilling technology, some deep well drilling machines and ultra-deep well drilling machines structurally limit the lifting of the drilling machine which cannot be completed by adopting the drilling main winch, meanwhile, the drilling machine is lighter and faster to disassemble and assemble along with the requirement of people when the drilling machine is used, more and more petroleum drilling machines adopt an independent hydraulic lifting mode to save the transition time, but when the drilling machine is lifted and lowered by adopting the hydraulic winch, the problems of downward sliding of the hydraulic winch, pipeline explosion prevention, exceeding load and the like can occur.
The main reason for the problems is the unbalance loading problem in the layout of the drilling machine, but the steel wire rope is flexibly connected with the drilling machine, so that the problem of the synchronism and the safety of the drilling machine during the lifting and the lowering are always difficult points, and the invention provides the lifting control device of the double-hydraulic winch for realizing the safe and stable lifting and lowering of the petroleum drilling machine.
Disclosure of Invention
The invention aims to provide a lifting control device of a double-hydraulic winch, which solves the problem of synchronism of a drilling machine during lifting and lowering.
The technical scheme adopted by the invention is that the double-hydraulic winch lifting control device comprises an oil supply port and an oil return port;
the oil supply port is connected with a pressure reducing valve, a first reversing control sheet, a second reversing control sheet and a third reversing control sheet in parallel in sequence through a pipeline;
the pressure reducing valve is sequentially connected with a hydraulic control reversing valve and a manual reversing valve in series, the manual reversing valve is respectively connected with a first closed brake and a second closed brake, the first closed brake is connected with a first hydraulic winch, and the second closed brake is connected with a second hydraulic winch;
the first hydraulic winch is connected with a first encoder, and the first encoder is connected with a synchronous controller; one end of the first hydraulic winch is respectively connected with a fourth balance valve D and a first balance valve B, the fourth balance valve D is sequentially connected with a second reversing control sheet and an oil return port in series, and the first balance valve B is sequentially connected with a synchronous flow dividing motor, a one-way throttle valve, the second balance valve B and a first reversing control sheet in series; the other end of the first hydraulic winch is respectively connected with a second balance valve A and a fourth balance valve A, the second balance valve A is sequentially connected with a first reversing control sheet and an oil return port in series, and the fourth balance valve A is connected with a third reversing control sheet;
the second hydraulic winch is connected with a second encoder, and the second encoder is connected with the synchronous controller; one end of the second hydraulic winch is connected with a fourth balance valve B and a first balance valve A respectively; the fourth balance valve B is sequentially connected with a third reversing control sheet and an oil return port in series; the first balance valve A is connected with the synchronous flow dividing motor; the other end of the second hydraulic winch is connected with a fourth balance valve C, and the fourth balance valve C is connected with a second reversing control sheet.
The first reversing control piece is connected with a third shuttle valve through a pipeline, the second reversing control piece is connected with a second shuttle valve through a pipeline, and the third reversing control piece is connected with a third shuttle valve through a pipeline; the first shuttle valve is sequentially connected with a second shuttle valve, a third shuttle valve and a one-way buffer damper in series, and the one-way buffer damper is connected with a hydraulic control reversing valve in series.
The synchronous flow-dividing motor comprises a synchronous flow-dividing motor body, a first one-way overflow valve and a second one-way overflow valve, the synchronous flow-dividing motor is respectively connected with the first one-way overflow valve and the second one-way overflow valve, the first one-way overflow valve is connected with a first balance valve A, and the second one-way overflow valve is connected with a first balance valve B.
And a line between the first hydraulic winch and the fourth balance valve A is sequentially communicated with a line between the first balance valve A, the fourth balance valve C and the second hydraulic winch.
And the first hydraulic winch is connected with a third balance valve A in parallel, and the second hydraulic winch is connected with a third balance valve B in parallel.
The beneficial effect of the invention is that,
the double-hydraulic winch lifting control device can compensate the real-time synchronous deviation of the hydraulic winch in the synchronous lifting and lowering processes of the drilling machine, and can realize the function of completing the synchronous lifting and lowering of the drilling machine under the condition of the layout unbalance loading of the deep well drilling machine; the hydraulic winch synchronous lifting and lowering device has the functions of synchronous lifting and lowering of the hydraulic winch and automatic compensation of synchronous deviation of the hydraulic winch terminal point, and can realize independent control of a single hydraulic winch and meet the installation requirement of a drilling machine; and secondly, an automatic brake and manual brake double-brake system in the device can realize the safety protection in the lifting and lowering processes of the drilling machine.
Drawings
FIG. 1 is a schematic diagram of a dual hydraulic winch hoist control apparatus of the present invention;
in the figure, 1, a load-sensitive multi-way reversing valve, 1-1, a first reversing control plate, 1-2, a second reversing control plate, 1-3, a third reversing control plate, 3, a pressure reducing valve, 4, a hydraulic control reversing valve, 5, a manual reversing valve, 6, a first-stage balance valve, 6-1, a first balance valve A, 6-2, a first balance valve B, 7, a second-stage balance valve, 7-1, a second balance valve A, 7-2, a second balance valve B, 8, a synchronous controller, 9, a closed brake, 9-1, a first closed brake, 9-2, a second closed brake, 10-1, a first encoder, 10-2, a second encoder, 11-1, a first hydraulic winch, 11-2, a second hydraulic winch, 12, a third-stage balance valve, 12-1, a third balance valve A, 12-2 parts of a third balance valve B, 13 parts of a pressure relief valve, 14-1 parts of a fourth balance valve A, 14-2 parts of a fourth balance valve B, 14-3 parts of a fourth balance valve C, 14-4 parts of a fourth balance valve D, 15-1 parts of a first one-way overflow valve, 15-2 parts of a second one-way overflow valve, 16 parts of a synchronous flow splitting motor, 17 parts of a one-way throttle valve, 18-1 parts of a third shuttle valve, 18-2 parts of a second shuttle valve, 18-3 parts of a first shuttle valve and 19 parts of one-way buffer damping.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a lifting control device of a double-hydraulic winch, which comprises an oil supply port and an oil return port; the oil supply port is connected in parallel with a pressure reducing valve 3, a first reversing control sheet 1-1, a second reversing control sheet 1-2 and a third reversing control sheet 1-3 in sequence through a pipeline;
the pressure reducing valve 3 is sequentially connected with a hydraulic control reversing valve 4 and a manual reversing valve 5 in series, and the manual reversing valve 5 is respectively connected with a first closed brake 9-1 and a second closed brake 9-2; the first closed brake 9-1 is connected with a first hydraulic winch 11-1, and the second closed brake 9-2 is connected with a second hydraulic winch 11-2;
one end of the first hydraulic winch 11-1 is respectively connected with a fourth balance valve D14-4 and a first balance valve B6-2, the fourth balance valve D14-4 is sequentially connected with a second reversing control sheet 1-2 and an oil return port in series, and the first balance valve B6-2 is sequentially connected with a synchronous flow dividing motor 16, a one-way throttle valve 17, a second balance valve B7-2 and a first reversing control sheet 1-1 in series; the other end of the first hydraulic winch (11-1) is respectively connected with a second balance valve A7-1 and a fourth balance valve A14-1, the second balance valve A7-1 is sequentially connected with a first reversing control sheet 1-1 and an oil return port in series, and the fourth balance valve A14-1 is connected with a third reversing control sheet 1-3;
one end of the second hydraulic winch 11-2 is respectively connected with a fourth balance valve B14-2 and a first balance valve A6-1; the fourth balance valve B14-2 is sequentially connected with the third reversing control sheet 1-3 and the oil return port in series; the first balance valve A6-1 is connected with the synchronous flow dividing motor 16; the other end of the second hydraulic winch 11-2 is connected with a fourth balance valve C14-3, and the fourth balance valve C14-3 is connected with a second reversing control plate 1-2.
The first reversing control sheet 1-1 is connected with a first shuttle valve 18-3 through a pipeline, the second reversing control sheet 1-2 is connected with a second shuttle valve 18-2 through a pipeline, and the third reversing control sheet 1-3 is connected with a third shuttle valve 18-1 through a pipeline; the first shuttle valve 18-3 is sequentially connected with a second shuttle valve 18-2, a third shuttle valve 18-1 and a one-way buffer damper 19 in series, and the one-way buffer damper 19 is connected with the hydraulic control reversing valve 4 in series.
The first hydraulic winch 11-1 is connected with a first encoder 10-1, and the first encoder 10-1 is connected with a synchronous controller 8; the second hydraulic winch 11-2 is connected with a second encoder 10-2, and the second encoder 10-2 is connected with the synchronous controller 8.
The synchronous flow-dividing motor 16 comprises a synchronous flow-dividing motor 16 body, a first one-way overflow valve 15-1 and a second one-way overflow valve 15-2, the synchronous flow-dividing motor 16 is respectively connected with the first one-way overflow valve 15-1 and the second one-way overflow valve 15-2, the first one-way overflow valve 15-1 is connected with a first balance valve A6-1, and the second one-way overflow valve (15-2) is connected with a first balance valve B6-2.
The line between the first hydraulic winch (11-1) and the fourth balance valve A (14-1) is communicated with the line between the first balance valve A (6-1), the fourth balance valve C (14-3) and the second hydraulic winch (11-2) in sequence.
The first hydraulic winch 11-1 is connected with a third balance valve A12-1 in parallel, and the second hydraulic winch 11-2 is connected with a third balance valve B12-2 in parallel.
The working flow of the invention is that,
referring to fig. 1, when the drilling machine rises, the first reversing control sheet 1-1 is switched to the left position, under the action of the one-way buffer damping 19, the closed brake 9 firstly releases the mechanical brake of the hydraulic winch, because the opening ratios of the first-stage balance valve 6, the second-stage balance valve 7 and the third-stage balance valve 12 are different, under the action of high-pressure oil, the first-stage balance valve 6, the second-stage balance valve 7 and the third-stage balance valve 12 are sequentially opened, the high-pressure oil supplies oil to the two hydraulic winches through the synchronous shunt motor 16, and the hydraulic winches synchronously rise the drilling machine.
In the lifting process, the rotation data of the winch drum is transmitted to the synchronous controller 8 in real time through the encoder 10, the stroke and the synchronous deviation value of the steel wire ropes of the two hydraulic winches are displayed in real time, and an alarm signal is sent out when the synchronous deviation value reaches a numerical value set by an operator. In the lifting process, an operator can simultaneously operate the second reversing control sheet 1-2 or the third reversing control sheet 1-3 to perform displacement compensation on a single hydraulic winch, so that the two hydraulic winches are synchronously lifted.
When the handle of the reversing control piece is restored to the neutral position, the first-stage balance valve 6 and the second-stage balance valve 7 are closed, the hydraulic winch brakes, the load feedback oil path is subjected to pressure release in a delayed mode under the action of the one-way buffer damping 19, the closed brake 9 brakes, the manual reversing valve 5 can be controlled at any time in the lifting process, the reversing enables the closed brake 9 to release pressure and brake, and the third-stage balance valve 12 can automatically brake the hydraulic winch under the accidental conditions of pipeline bursting and the like. When one hydraulic winch reaches the end point, the other hydraulic winch can continue to lift under the action of the first one-way overflow valve 15-1 and the second one-way overflow valve 15-2 to reach the end point. When the positioning pin shaft needs to be installed, the second reversing control sheet 1-2 or the third reversing control sheet 1-3 can be controlled to control a single hydraulic winch, and therefore the lifting work of the drilling machine is completed.
When the drilling machine is lowered, the first reversing control sheet 1-1 is switched to the right position, under the action of the one-way buffer damping 19, the closed brake 9 firstly relieves the mechanical brake of the hydraulic winch, under the action of high-pressure oil, the first-stage balance valve 6, the second-stage balance valve 7 and the third-stage balance valve 12 are sequentially opened, the high-pressure oil supplies oil to the two hydraulic winches to lower the hydraulic winches, the return oil of the hydraulic winches is converged into one path through the reversing control sheet and the pipeline thereof to return oil after passing through the synchronous shunt motor 16, and the drilling machine is synchronously lowered during oil return.
In the lowering process, the rotation data of the winch drum is transmitted to the synchronous controller 8 in real time through the encoder 10, the stroke and the synchronous deviation value of the steel wire ropes of the two hydraulic winches are displayed in real time, and an alarm signal is sent out when the synchronous deviation value reaches a set value. In the lowering process, an operator can simultaneously operate the second reversing control sheet 1-2 or the third reversing control sheet 1-3 to carry out displacement compensation on the single hydraulic winch so that the two hydraulic winches are synchronously lifted. When the handle of the reversing control piece is restored to the neutral position, the first-stage balance valve 6 and the second-stage balance valve 7 are closed, the hydraulic winch brakes, due to the action of the one-way buffer damping 19, the load feedback oil path is subjected to pressure release in a delayed mode, the closed brake 9 brakes, meanwhile, the manual reversing valve 5 can be controlled to reverse at any time in the lowering process, the closed brake 9 is subjected to pressure release braking, the second-stage balance valve 7 solves the problems of impact load and stall when the drilling machine is lowered to cross the gravity center position, and the third-stage balance valve 12 can automatically brake the hydraulic winch under the accidental conditions that a pipeline bursts and the like. When the drilling machine is placed down to a preset position and the positioning pin shaft is installed, the second reversing control sheet 1-2 or the third reversing control sheet 1-3 can be controlled to control a single hydraulic winch, and therefore the drilling machine is placed down.
The principle of operation of the components of the present invention is,
as shown in fig. 1, a first reversing control sheet 1-1 is used for controlling the synchronous movement direction and speed of two hydraulic winches, and a second reversing control sheet 1-2 and a third reversing control sheet 1-3 respectively and independently control the direction and speed of a single hydraulic winch; the pressure reducing valve 3 provides a pilot fluid source as a brake fluid source of the hydraulic winch; the hydraulic control reversing valve 4 is controlled by a load feedback oil path to realize the braking control of the winch, meanwhile, a one-way buffer damper 19 is arranged on the load feedback oil path, and the one-way buffer damper 19 is used for adjusting the braking sequence of the hydraulic braking and the mechanical braking of the hydraulic winch; secondly, the purpose of controlling the winch can be realized by adopting a common reversing valve to match with the reducing valve 3, the shuttle valve group 18 and the one-way buffer damper 19.
The synchronous shunt motor 16 can realize the synchronous motion of the two hydraulic winches under the condition of unbalance loading; the one-way overflow valve 15 is used for performing terminal compensation on synchronous deviation of the hydraulic winch and simultaneously supplementing oil to the hydraulic motor, so that the motor is prevented from being empty; the one-way throttle valve 17 throttles the return oil of the synchronous shunt motor. The synchronous flow dividing motor is arranged on a lifting oil supply loop of the hydraulic winch, and the fourth balance valve A14-1, the fourth balance valve B14-2, the fourth balance valve C14-3 and the fourth balance valve D14-4 are arranged in a winch single-action control loop, so that the 'stall' of the hydraulic winch in single action can be prevented, and the 'hydraulic braking' function of a single winch can be realized.
The primary balance valve 6 is used for achieving the functions of synchronizing, transferring control oil paths and pressure maintaining of the isolation hydraulic winch, the secondary balance valve 7 is used for stall control and hydraulic braking of the hydraulic winch, and the tertiary balance valve 12 is directly installed on the hydraulic winch body and used for preventing accidents such as hydraulic pipeline bursting. Secondly, the first-stage balance valve 6 and the second-stage balance valve 7 can be replaced by hydraulic locks, explosion-proof valves and the like.
The closed brake 9 is directly arranged on the hydraulic winch body and used for parking braking of the winch, and an external hydraulic source is adopted to control braking; the hydraulic control reversing valve 4 realizes mechanical braking of the hydraulic winch by controlling the on-off of an external control liquid source of the closed brake 9, the problem of 'slipping down' when the double-hydraulic winch works and stops is solved by controlling, the hydraulic control reversing valve 4 is linked with the three reversing control plates, when the three reversing control plates reverse, the hydraulic control reversing valve 4 reverses accordingly, the closed brake 9 is opened, and when the three reversing control plates reset, the hydraulic control reversing valve 4 resets to release the pressure of the external control liquid source of the closed brake 9 for braking, so that 'automatic braking' of the hydraulic winch is realized. Meanwhile, the manual reversing valve 5 arranged on the external control hydraulic source has override control, and the brake can be manually controlled at any time.
The hydraulic winch 11 body is provided with a closed brake 9 and a pressure release valve 13, and a winding drum encoder interface is reserved. The pressure release valve 13 is used to prevent the hydraulic motor from being damaged by excessive oil pressure discharged from the hydraulic motor.
The synchronous controller 8 is used for processing the data of the encoder 10 and displaying the real-time displacement and the synchronous deviation of the steel wire ropes of the two hydraulic winches, and has an alarm function of overlarge synchronous deviation; the encoder 10 is installed on the hydraulic winch and measures the rotating speed of the winding drum in real time. When the three reversing control pieces are controlled by the electric proportion, the synchronous controller 8 can be adopted to control the three reversing control pieces to realize the automatic control function of the hydraulic winch.
The double-hydraulic winch lifting control device can achieve the functions of synchronously lifting and lowering the drilling machine under the condition of unbalanced loading of the deep well drilling machine layout, can also achieve independent control over a single hydraulic winch, and meets the installation requirement of the drilling machine.
Claims (5)
1. A double-hydraulic winch lifting control device is characterized by comprising an oil supply port and an oil return port; the oil supply port is connected with a pressure reducing valve (3), a first reversing control sheet (1-1), a second reversing control sheet (1-2) and a third reversing control sheet (1-3) in parallel in sequence through a pipeline;
the pressure reducing valve (3) is sequentially connected with a hydraulic control reversing valve (4) and a manual reversing valve (5) in series, and the manual reversing valve (5) is respectively connected with a first closed brake (9-1) and a second closed brake (9-2); the first closed brake (9-1) is connected with a first hydraulic winch (11-1), and the second closed brake (9-2) is connected with a second hydraulic winch (11-2);
one end of the first hydraulic winch (11-1) is respectively connected with a fourth balance valve D (14-4) and a first balance valve B (6-2), the fourth balance valve D (14-4) is sequentially connected with a second reversing control sheet (1-2) and an oil return port in series, and the first balance valve B (6-2) is sequentially connected with a synchronous flow dividing motor (16), a one-way throttle valve (17), a second balance valve B (7-2) and a first reversing control sheet (1-1) in series; the other end of the first hydraulic winch (11-1) is respectively connected with a second balance valve A (7-1) and a fourth balance valve A (14-1), the second balance valve A (7-1) is sequentially connected with a first reversing control sheet (1-1) and an oil return port in series, and the fourth balance valve A (14-1) is connected with a third reversing control sheet (1-3);
one end of the second hydraulic winch (11-2) is respectively connected with a fourth balance valve B (14-2) and a first balance valve A (6-1); the fourth balance valve B (14-2) is sequentially connected with a third reversing control sheet (1-3) and an oil return port in series; the first balance valve A (6-1) is connected with a synchronous flow dividing motor (16); the other end of the second hydraulic winch (11-2) is connected with a fourth balance valve C (14-3), and the fourth balance valve C (14-3) is connected with a second reversing control sheet (1-2);
the first hydraulic winch (11-1) is connected with a first encoder (10-1), and the first encoder (10-1) is connected with a synchronous controller (8); the second hydraulic winch (11-2) is connected with a second encoder (10-2), and the second encoder (10-2) is connected with the synchronous controller (8).
2. The dual-hydraulic winch lifting control device as claimed in claim 1, wherein the first reversing control plate (1-1) is connected with a first shuttle valve (18-3) through a pipeline, the second reversing control plate (1-2) is connected with a second shuttle valve (18-2) through a pipeline, and the third reversing control plate (1-3) is connected with a third shuttle valve (18-1) through a pipeline;
the first shuttle valve (18-3) is sequentially connected with a second shuttle valve (18-2), a third shuttle valve (18-1) and a one-way buffer damper (19) in series, and the one-way buffer damper (19) is connected with the hydraulic control reversing valve (4) in series.
3. The dual-hydraulic winch hoisting control device according to claim 1, wherein the synchronous shunt motor (16) comprises a synchronous shunt motor (16) body, a first one-way overflow valve (15-1) and a second one-way overflow valve (15-2), the synchronous shunt motor (16) is respectively connected with the first one-way overflow valve (15-1) and the second one-way overflow valve (15-2), the first one-way overflow valve (15-1) is connected with a first balance valve A (6-1), and the second one-way overflow valve (15-2) is connected with a first balance valve B (6-2).
4. The twin hydraulic winch hoist control apparatus of claim 1, wherein the line between the first hydraulic winch (11-1) and the fourth balance valve a (14-1) is further connected to the line between the first balance valve a (6-1) and the fourth balance valve C (14-3) and the second hydraulic winch (11-2).
5. The twin hydraulic winch lift control apparatus of claim 1, wherein a third balance valve a (12-1) is connected in parallel to the first hydraulic winch (11-1), and a third balance valve B (12-2) is connected in parallel to the second hydraulic winch (11-2).
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| CN114014191B (en) * | 2021-12-03 | 2023-08-18 | 中船华南船舶机械有限公司 | Hydraulic system of double-insurance winch |
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| NO138839C (en) * | 1977-02-16 | 1979-06-06 | Bergens Mek Verksted | HYDRAULIC WINCH SYSTEM FOR SWINGING THE LOAD BOOM |
| US4218883A (en) * | 1978-08-18 | 1980-08-26 | A/S Bergens Mekaniske Verksteder | Hydraulic system for operation of two winches |
| JP2000240605A (en) * | 1999-02-22 | 2000-09-05 | Yutani Heavy Ind Ltd | Synchronization controller for hydraulic actuator |
| CN108423577B (en) * | 2017-11-30 | 2019-10-15 | 中船华南船舶机械有限公司 | A kind of crane autobalance and force balance system and method |
| CN109019340B (en) * | 2018-09-29 | 2019-09-17 | 武汉船用机械有限责任公司 | A kind of bistable rope winch hydraulic system of tension Independent adjustable |
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|---|---|
| CN112174000A (en) | 2021-01-05 |
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