CN109279528B - Winch pressurization follow-up system and control method - Google Patents
Winch pressurization follow-up system and control method Download PDFInfo
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- CN109279528B CN109279528B CN201811339332.7A CN201811339332A CN109279528B CN 109279528 B CN109279528 B CN 109279528B CN 201811339332 A CN201811339332 A CN 201811339332A CN 109279528 B CN109279528 B CN 109279528B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0125—Motor operated winches
- B66D2700/0133—Fluid actuated
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
Abstract
The invention relates to a winch pressurization follow-up system and a control method, wherein the winch pressurization follow-up system comprises a pressure pump, a pressurization winch, a working winch, a pressurization winch multistage overflow valve and a working winch multistage overflow valve, the pressurization winch multistage overflow valve comprises a Y7 low-pressure floating electromagnetic valve and a Y6 high-pressure floating electromagnetic valve which enables a pressure difference to be generated between a port B and a port A of the pressurization winch, the working winch multistage overflow valve comprises a Y9 low-pressure floating electromagnetic valve and a Y8 high-pressure floating electromagnetic valve which enables a pressure difference to be generated between the port B and the port A of the working winch, and the invention combines an operating system of the working winch and the pressurization winch into a set of operating system, thereby saving cost and simplifying operation flow.
Description
Technical Field
The invention relates to a winch pressurization follow-up system and a control method.
Background
In the construction process of large-scale piling equipment, a drilling tool is required to be increased by one downward pressure when drilling in harder rock stratum, so that the drilling speed is increased.
There are three currently used pressurization methods:
1. pressurizing the drilling tool by self gravity;
2. pressurizing the pressurizing oil cylinder;
3. pressurizing winch for pressurizing.
The winch pressurization has the advantages of long pressurization stroke, large pressurization force and the like, and is the most widely applied pressurization method for large-scale piling equipment. Because of the different modes of driving the drill rod by the power head, the piling equipment has different pressurizing structures, and the power head and the drill rod are rigidly connected and cannot move relatively, the pressurizing winch still acts on the power head, but must move simultaneously with the working winch and have opposite moving directions, the pressurizing needs close matching of the two winches, but the prior system for matching the two winches is not realized, so that the condition of rope disorder or breakage of a steel wire rope and the like easily occurs during working.
Disclosure of Invention
The invention solves the defects of the prior art and provides a winch pressurization follow-up system and a control method which combine the operating systems of working winches and pressurization winches into one set of operating system, save the cost and simplify the operation flow.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the winch pressurization follow-up system comprises a pressure pump for generating pressure oil, a multi-way valve for controlling the pressure oil entering the pressurizing winch and the working winch, a pressurizing winch multistage overflow valve for realizing high-low pressure floating of the pressurizing winch by controlling the pressure oil difference between an opening A and an opening B of the pressurizing winch, and a working winch multistage overflow valve for realizing high-low pressure floating of the working winch by controlling the pressure oil pressure difference between the opening A and the opening B of the working winch, wherein the pressurizing winch multistage overflow valve comprises a Y7 low-pressure floating electromagnetic valve and a Y6 high-pressure floating electromagnetic valve for generating a pressure difference between the opening B and the opening A of the pressurizing winch, and the working winch multistage overflow valve comprises a Y9 low-pressure floating electromagnetic valve and a Y8 high-pressure floating electromagnetic valve for generating a pressure difference between the opening B and the opening A of the working winch.
Further, when the pressurizing winch pressurizes, the pressure value generated between the pressurizing winch multistage overflow valves is 5MPa.
Further, when the working winch is pressurized, the pressure value generated between the working winch multistage overflow valves is 5MPa.
Further, the device comprises an electric handle for controlling the Hall principle of rope winding and unwinding actions of the working winch and the pressurizing winch, and a PLC for receiving and processing electric proportional signals of the electric handle; and the electric proportional signal output by the PLC controls the multi-way valve, the pressurizing winch multi-stage overflow valve and the working winch multi-stage overflow valve.
Further, the device also comprises an SB1 button for controlling the pressurization of the pressurization winch and an SB2 button for controlling the floating of the working winch, wherein the start of the pressurization winch is indicated when the SB1 button is started, and the start of the floating of the working winch is indicated when the SB2 button is started.
Further, the output signal of the PLC is connected with the display, all data are monitored on the display screen in real time, and detection and maintenance are facilitated.
A control method of winch pressurization follow-up system is used for controlling the winch pressurization follow-up system, firstly, a PLC detects whether an SB2 button is opened,
when the SB2 button is started, the control of the electric handle is invalid, the PLC detects whether the SB1 button is started or not, and when the SB1 button is started, the Y8 high-voltage floating electromagnetic valve is powered on, and the pressurizing winch pressurizes and receives ropes; when SB2 is not opened, the Y9 low-pressure floating electromagnetic valve is electrified, and the pressurizing winch receives the rope at low pressure;
when the SB2 button is not started, the electric handle transmits the lifting signal and the lowering signal to the PLC, and the PLC compares the lifting signal voltage value (namely, the rope collecting signal voltage value) SP1 with 0 or the lowering signal voltage value (namely, the rope releasing signal voltage value) SP2 with 0;
when SP1 is more than 0 and the Y6 high-voltage floating electromagnetic valve is electrified, the working winch is lifted up;
when SP2 is more than 0, the PLC detects whether the SB1 button is opened, and when SB1 is opened, the Y8 high-voltage floating electromagnetic valve is powered on, and the pressurizing winch pressurizes and receives ropes; when SB2 is not opened, the Y9 low-voltage floating electromagnetic valve is electrified, and the winch is pressurized to take up the rope at low voltage.
After the technical scheme is adopted, the invention has the following advantages:
1. the pressurizing winch and the working winch are respectively provided with the pressurizing winch multi-stage overflow valve and the working winch multi-stage overflow valve, so that the high-low pressure floating functions of the pressurizing winch and the working winch are increased, the following two states are increased, the working winch is used for winding and unwinding the rope, when the pressurizing winch is used for unwinding the rope, the back pressure generated by high-pressure floating is given to the drill rod and the power head through the control of the pressurizing winch multi-stage overflow valve, so that the pressurizing winch always provides a downward pretightening force for the steel wire rope when the working winch is used for winding and unwinding the rope, the pressurizing winch is in a low-pressure rope winding state, the pressurizing winch is controlled to be slightly faster than the working winch rope winding speed through PCL, the pressurizing winch steel wire rope is always in a stressed state, and the steel wire rope is ensured not to be disordered.
2. The operation of working winch and pressurizing winch are combined into an electric handle of a Hall principle, the handle signals are received and processed by a PLC, and the PLC outputs electric proportional signals to control the pressurizing winch multistage overflow valve and the working winch multistage overflow valve, so that the logic control of the working winch and the pressurizing winch is realized.
In summary, this device can realize the required all states of pressurization hoist and work with work hoist and work, multistage overflow valve function, can satisfy all operating conditions, guaranteed the security and the reliability of machine operation again, simple installation does not need to increase extra detection device, and input and output all get into PLC, can all monitor on the display screen real-time with all data through the processing of PLC and display, be convenient for detect and maintain.
Drawings
Fig. 1 is a hydraulic schematic of the present invention.
FIG. 2 is a schematic diagram of the structure of the pressurized winch and the working winch of the present invention.
Fig. 3 is a control schematic of the present invention.
In the figure: 1. a pressure pump; 2. a make-up pump, a 3-way valve; 4. a pressurized winch multistage overflow valve; 5. pressurizing and hoisting; 6. working winch; 7. an oil supplementing back pressure one-way valve; 8. a shuttle valve; 9. working winch multistage overflow valve; 10. a pressurization pressure regulating valve.
Description of the embodiments
The invention will be further described in detail below with reference to the drawings and examples of implementation for a better understanding of the invention, but the embodiments of the invention are not limited thereto, and the scope of protection of the invention also relates to equivalent technical means that can be conceived by a person skilled in the art based on the inventive concept.
As shown in fig. 1 and 2, the winch pressurization follow-up system is mainly applied to piling equipment with a power head 12 rigidly connected with a drill rod 11 as shown in fig. 2, and comprises a pressure pump 1 for generating pressure oil, a multiway valve 3 for controlling the pressure oil entering a pressurizing winch 5 and a working winch 6, a pressurizing winch multistage overflow valve 4 for realizing high-low pressure floating of the pressurizing winch by controlling the pressure oil difference between an opening A and an opening B, and a working winch multistage overflow valve 9 for realizing high-low pressure floating of the working winch by controlling the pressure oil pressure difference between the opening A and the opening B, wherein the pressurizing winch multistage overflow valve 4 comprises a Y7 low-pressure floating electromagnetic valve and a Y6 high-pressure floating electromagnetic valve for generating a pressure difference between the opening B and the opening A of the pressurizing winch, the working winch multistage overflow valve 9 comprises a Y9 low-pressure floating electromagnetic valve and a Y8 high-pressure floating electromagnetic valve for generating a pressure difference between the opening B and the opening A of the pressurizing winch, when the pressurizing winch is pressurized, the pressure value generated between the pressurizing winch multistage overflow valve 4 is 5MPa, and the pressure value generated between the working winch multistage overflow valve 9 when the working winch is pressurized.
In the embodiment, the device comprises an electric handle for controlling the Hall principle of rope winding and unwinding actions of a working winch and a pressurizing winch, and a PLC for receiving and processing electric proportional signals of the electric handle; the electric proportion signal that PLC output control multiplex valve 3, pressurization hoist multistage overflow valve 4 and work hoist multistage overflow valve 9 still include the SB1 button that is used for controlling the electricity of the unsteady solenoid valve of Y6 high pressure, the SB2 button that is used for controlling the electricity of the unsteady solenoid valve of Y9 low pressure and the SP3 button that is used for adjusting pressurization hoist pressure value size, the SB1 button represents when opening and starts pressurization hoist pressurization, the SB2 button represents when opening that work hoist is opened and is floated, PLC's output signal is connected with the display, monitors all data on the display screen in real time, is convenient for detect and maintain.
A control method of a winch pressurization follow-up system, which is used for controlling the winch pressurization follow-up system, and is shown in the following marked in the figure 3:
the input is: SP1, SP2: the working winch handle signal is 0-5V analog quantity, and the corresponding analog quantity in the controller is 0-5000.
SP3: and the signal of the pressurizing adjusting knob is 0-5V analog quantity.
SB1: the pressure selection button is pressed, and the signal is 0V and 24V switching value.
SB2: the floating selection button of the winch is operated, and the signal is 0V and 24V switching value.
The output is: y1, Y2: the electromagnetic valve for winding and unwinding the rope is operated, and the control signal is PWM current of 0-1000 mA.
Y3, Y4: the electromagnetic valve for winding and unwinding the rope is pressurized, and the control signal is PWM current of 0-1000 mA.
Y8, Y9: the high-low voltage floating electromagnetic valve of the working winch is controlled by a 24V switching power supply.
Y5: the pressure of the pressurized winch regulates the electromagnetic valve, and the control signal is PWM current of 0-1000 mA.
Y6, Y7; the control signal of the high-low voltage floating electromagnetic valve of the pressurized winch is 24V switching power supply.
The specific control method comprises the following steps: first the PLC detects whether the SB2 button is on,
when the SB2 button is started, the control of the electric handle is invalid, the PLC detects whether the SB1 button is started or not, and when the SB1 button is started, the Y8 high-voltage floating electromagnetic valve is powered on, and the hoisting is pressurized to collect the rope at high voltage; when SB2 is not opened, the Y9 low-voltage floating electromagnetic valve is electrified, and the winch is pressurized to take up the rope at low voltage;
when the SB2 button is not started, the electric handle transmits the lifting signal and the lowering signal to the PLC, and the PLC compares the lifting signal voltage value (namely, the rope collecting signal voltage value) SP1 with 0 or the lowering signal voltage value (namely, the rope releasing signal voltage value) SP2 with 0;
when SP1 is more than 0 and the Y6 high-voltage floating electromagnetic valve is electrified, the working winch is pressurized and lifted up;
when SP2 is more than 0, the PLC detects whether the SB1 button is opened, and when SB1 is opened, the Y8 high-voltage floating electromagnetic valve is powered on, and the pressurizing winch pressurizes and receives ropes; when SB2 is not opened, the Y9 low-voltage floating electromagnetic valve is electrified, and the winch is pressurized to take up the rope at low voltage.
Wherein the corresponding numerical values are displayed through a display screen connected with the PLC.
In addition, it should be noted that, the present invention is not limited to the above embodiments, and as long as the parts thereof are not described in specific dimensions or shapes, the parts may be any dimensions or shapes suitable for the structures thereof, and any changes in the material composition thereof, and all the structural designs provided by the present invention are all modifications of the present invention, which should be considered to be within the scope of the present invention.
Claims (4)
1. A control method of a winch pressurization follow-up system is characterized by comprising the following steps of: the hydraulic winch comprises a winch pressurization follow-up system, wherein the winch pressurization follow-up system comprises a pressure pump (1) for generating pressure oil, a multiway valve (3) for controlling the pressure oil entering the pressurizing winch (5) and the working winch (6), a pressurizing winch multistage overflow valve (4) for realizing high-low pressure floating of the pressurizing winch (5) by controlling the pressure oil pressure difference between an opening A and an opening B of the pressurizing winch (5), and a working winch multistage overflow valve (9) for realizing high-low pressure floating of the working winch (6) by controlling the pressure oil pressure difference between the opening A and the opening B of the working winch (6), wherein the pressurizing winch multistage overflow valve (4) comprises a Y7 low-pressure floating electromagnetic valve and a Y6 high-pressure floating electromagnetic valve for generating a pressure difference between the opening B and the opening A of the pressurizing winch (5), and further comprises an electric proportional control (SB) button (2) for controlling the actions of a winding rope and a releasing handle of the pressurizing winch (5) and an electric proportional control system for receiving and controlling the electric signals of the pressurizing winch (SB 1 and the pressurizing winch (SB 2); the electric proportional signal output by the PLC controls the multi-way valve (3), the pressurizing winch multi-stage overflow valve (4) and the working winch multi-stage overflow valve (9), the starting of the pressurizing winch (5) is indicated when the SB1 button is started, and the starting of the working winch (6) is indicated when the SB2 button is started; the specific control steps are as follows:
first the PLC detects whether the SB2 button is on,
when the SB2 button is started, the control of the electric handle is invalid, the PLC detects whether the SB1 button is started or not, when the SB1 button is started, the Y8 high-voltage floating electromagnetic valve is powered on, and the pressurizing winch (5) pressurizes and takes up ropes; when SB2 is not opened, the Y9 low-pressure floating electromagnetic valve is electrified, and the pressurizing winch (5) receives the rope at low pressure;
when the SB2 button is not started, the electric handle transmits the lifting signal and the lowering signal to the PLC, and the PLC compares the lifting signal voltage value SP1 to be 0 or the lowering signal voltage value SP2 to be 0 of the electric handle;
when SP1 is more than 0 and a Y6 high-voltage floating electromagnetic valve is electrified, the working winch (6) is lifted up;
when SP2 is more than 0, the PLC detects whether the SB1 button is opened, when SB1 is opened, the Y8 high-voltage floating electromagnetic valve is powered on, and the pressurizing winch (5) pressurizes and takes up ropes; when SB2 is not opened, the Y9 low-pressure floating electromagnetic valve is electrified, and the pressurizing winch (5) receives the rope at low pressure.
2. The control method of the hoisting pressurization follow-up system according to claim 1, characterized in that: when the pressurizing winch (5) pressurizes, the pressure value generated between the pressurizing winch multistage overflow valves (4) is 5MPa.
3. The control method of the hoisting pressurization follow-up system according to claim 2, characterized in that: when the working winch (6) is pressurized, the pressure value generated between the working winch multistage overflow valves (9) is 5MPa.
4. The control method of the hoisting pressurization follow-up system according to claim 1, characterized in that: and the output signal of the PLC is connected with a display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811339332.7A CN109279528B (en) | 2018-11-12 | 2018-11-12 | Winch pressurization follow-up system and control method |
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| CN201811339332.7A CN109279528B (en) | 2018-11-12 | 2018-11-12 | Winch pressurization follow-up system and control method |
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| CN110985458B (en) * | 2020-01-06 | 2021-11-12 | 武汉船用机械有限责任公司 | Multistage differential pressure control hydraulic system |
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| CN109279528A (en) | 2019-01-29 |
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