CN115402961A - Closed type winch tensioning control system and method and diaphragm wall hydraulic grab bucket - Google Patents
Closed type winch tensioning control system and method and diaphragm wall hydraulic grab bucket Download PDFInfo
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- CN115402961A CN115402961A CN202211036767.0A CN202211036767A CN115402961A CN 115402961 A CN115402961 A CN 115402961A CN 202211036767 A CN202211036767 A CN 202211036767A CN 115402961 A CN115402961 A CN 115402961A
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- Prior art keywords
- tensioning
- closed
- control valve
- controller
- motor
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Classifications
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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
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
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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
- B66D1/54—Safety gear
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
Abstract
A closed type winch tensioning control system and method and a continuous wall hydraulic grab bucket comprise a closed type pump and a motor which are connected with each other, wherein the input end of a controller is connected with a pressure sensor, an engine control unit and a display, and the output end of the controller is connected with coils of a first control valve and a second control valve. According to the loosening state of the steel wire rope caused by different stratums or different bucket weights, the hoisting tension parameter in the display is adjusted, the controller reads real-time rotating speed information of the engine control unit, and the controller is matched with corresponding motor target displacement and pump displacement to achieve hoisting tension. This application is through hoist tensioning control solution grab bucket touch end under the different stratum and when the grab bucket is closed wire rope lax lead to the grooving incline problem, and the closed system of adoption has avoided energy loss simultaneously to and can the quick adjustment tensioning, make it improve the perpendicular quality of grooving and wire rope life.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a closed type winch tensioning control system and method and a continuous wall hydraulic grab bucket.
Background
Engineering machinery equipment such as continuous wall hydraulic grab bucket, rotary drilling rig etc. for realizing high-efficient construction, wherein promoted the speed that the hoist was carried and is put, for realizing energy-conservation, wherein hydraulic system has adopted closed system, and closed system can reduce pressure loss and improve the stationarity when commuting.
When the continuous wall hydraulic grab bucket is placed down along with the winch at a high speed and touches the bottom, the steel wire rope is over-released and loosened due to reasons of inertia, parking braking delay and the like, the winch is loosened due to the reaction force of a soil layer when the grab bucket body grabs the soil, and then the grab bucket body is inclined during construction, so that the quality of the formed groove is reduced. At present, most winches are loosened by manually operating winches to realize tensioning through experience by a mechanic, and automatic tensioning is realized through an overflow valve and a reversing valve.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a closed type winch tensioning control system and method with simple structure and good effect and a hydraulic diaphragm wall grab bucket.
The invention is realized by the following technical scheme: the utility model provides a closed hoist tensioning control system, includes interconnect's closed pump and motor, be equipped with pressure sensor on the pipeline that closed pump and motor are connected, the closed pump is connected with first control valve, the motor is connected with the second control valve, still includes the controller, the input of controller is connected with pressure sensor, engine speed sensor and display, first control valve and second control valve are connected to the output of controller.
It further comprises the following steps: the closed pump is a bidirectional variable pump, and the motor is a bidirectional variable motor.
The closed pump and the motor form a closed system, and an oil inlet and an oil outlet of the closed pump are respectively in pipeline connection with an oil inlet and an oil outlet of the motor.
The first control valve is a double-coil electric proportional valve and comprises a first control valve coil I and a first control valve coil II.
The second control valve is a single coil electro-proportional magnetic valve and includes a second control valve coil.
The display is provided with a winding tension parameter setting button.
A method of closed hoist tensioning control system comprising the steps of:
s1, setting a winding tension parameter on a display;
s2, reading real-time rotating speed information of the engine measured by an engine rotating speed sensor and a winding tension force parameter set by a display by a controller, and calculating and storing matched target tension pressure information;
s3, the controller matches the target displacement of the corresponding motor according to the stored target tensioning pressure information;
and S4, the controller compares the target tensioning pressure information with the real-time tensioning pressure measured by the pressure sensor, and adjusts the displacement of the closed pump in the tensioning direction if the target tensioning pressure information and the real-time tensioning pressure tend to be equal.
In step S3, the controller adjusts the current value of the second control valve according to the curve relation between the current of the second control valve and the motor displacement to realize the required motor displacement.
In the step S4, the controller adjusts the current value of the first control valve in real time according to the curve relation between the current of the first control valve and the closed pump displacement, and the first control valve controls the closed pump displacement in the tensioning direction.
The continuous wall hydraulic grab bucket comprises a closed type hoisting tensioning control system and further comprises a closed type hoisting tensioning control method.
The invention has the following advantages: according to the closed type winch tensioning control system and method and the continuous wall hydraulic grab bucket, the problem of deviation of grooving caused by loosening of the steel wire rope when the grab bucket touches the bottom and is closed under different strata is solved through winch tensioning control, meanwhile, the adopted closed type system avoids energy loss, tensioning can be rapidly adjusted, grooving vertical quality is improved, and the service life of the steel wire rope is prolonged.
Drawings
FIG. 1 is a control flow diagram of the present invention;
FIG. 2 is a hydraulic schematic of the present invention;
FIG. 3 is a schematic diagram of the electrical operation of the present invention;
FIG. 4 is a control valve coil current versus displacement graph of the present invention;
in the figure: 1. a pressure sensor, 2, a closed pump, 3, a motor, 4, a first control valve, 41, a first control valve coil I, 42, a first control valve coil II, 5, a second control valve,
51. a second control valve coil 6, an engine control unit 7, a display 8 and a controller.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention and are not intended to limit the present invention.
As shown in fig. 2 to 3, the closed type hoisting tensioning control system comprises a closed type pump 2 and a motor 3 which are connected with each other, wherein a pressure sensor 1 is arranged on a pipeline connected between the closed type pump 2 and the motor 3, the closed type pump 2 is connected with a first control valve 4, the motor 3 is connected with a second control valve 5, the closed type hoisting tensioning control system further comprises a controller 8, an input end of the controller 8 is connected with the pressure sensor 1, an engine speed sensor 6 and a display 7, and an output end of the controller 8 is connected with the first control valve 4 and the second control valve 5. The display 7 is provided with a winding tension parameter setting button. The closed type winch tensioning control system comprises a closed type pump and a motor which are connected end to form a closed type system, and the adopted closed type system avoids energy loss, can quickly adjust tensioning and improves construction efficiency; a pipeline of the closed system is provided with a pressure sensor for detecting real-time tensioning pressure; the closed type pump is connected with a control valve for controlling the rotation direction and the displacement of the pump, and the valve controls the power on and off and the size of the power on current through a controller; the motor is connected with a control valve for controlling the displacement, and the valve is also controlled by the controller; the display is used for setting the hoisting tension force parameter and transmitting the parameter to the controller, can also be set by other modes such as a knob and the like, and adjusts the hoisting tension force parameter in the display according to the slack state of the steel wire rope caused by different stratums or different weight of the bucket body; the engine speed sensor is arranged to transmit the engine speed information to the controller in real time; when the device is used, the controller controls the tensioning pressure to be constant according to the set tensioning force parameter and the real-time rotating speed information of the engine, and adjusts the discharge capacity of the closed pump and the discharge capacity of the motor, so that the problem of grooving deflection caused by looseness of a steel wire rope when a grab bucket body touches the bottom and grabs soil under different stratums is solved, the grooving vertical quality is improved, and the service life of the steel wire rope is prolonged; meanwhile, the adopted closed system avoids energy loss, can quickly adjust tensioning and improves construction efficiency.
As shown in fig. 2 to 3, in the closed hoisting and tensioning control system, the closed pump 2 is a bidirectional variable pump, and the motor 3 is a bidirectional variable motor. The closed pump 2 and the motor 3 form a closed system, and an oil inlet and an oil outlet of the closed pump 2 are respectively connected with an oil inlet and an oil outlet of the motor 3 through pipelines. The oil inlet and outlet of the closed pump are respectively in pipeline connection with the oil inlet and outlet of the motor, and the pressure of the closed pump is equal to that of the motor by neglecting pipeline pressure loss; the pressure sensor is arranged in a tensioning oil way which is connected with the motor and used for detecting real-time tensioning pressure.
As shown in fig. 2 to 3, the first control valve 4 is a double-coil electro proportional valve, and the first control valve 4 includes a first control valve coil i 41 and a first control valve coil ii 42. The second control valve 5 is a single-coil electromagnetic proportional valve. The first control valve is a double-coil electric proportional valve and is used for adjusting the displacement and the rotation direction of the closed pump 2; the closed pump control system comprises a first control valve coil I and a first control valve coil II, wherein the first control valve coil I or the first control valve coil II is electrified to guide control oil into and out of a stroke piston and control the positive or negative rotation of the closed pump, and the displacement can be adjusted by the size of the electrified current; the second control valve is a single coil electromagnetic proportional valve for adjusting the displacement of the motor.
A method of closed hoist tensioning control system as shown in fig. 1 and 4, comprising the steps of:
s1, setting a winding tension parameter on a display 7; the hoisting tension force parameter in the display can be adjusted according to the loosening state of the steel wire rope caused by different stratums or different weight of the bucket body;
s2, reading real-time rotating speed information of the engine measured by the engine rotating speed sensor 6 and a winding tensioning force parameter set by the display 7 by the controller 8, and calculating and storing matched target tensioning pressure information;
s3, the controller 8 matches the target displacement of the corresponding motor according to the stored target tensioning pressure information;
the controller 8 adjusts the current value of the second control valve 5 according to the curve relation between the current of the second control valve 5 and the displacement of the motor 3 to realize the required displacement of the motor;
s4, the controller 8 compares the target tensioning pressure information with the real-time tensioning pressure measured by the pressure sensor 1, and adjusts the displacement of the closed pump 2 in the tensioning direction if the target tensioning pressure information and the real-time tensioning pressure tend to be equal;
the controller 8 adjusts the current value of the first control valve 4 in real time according to the curve relation between the current of the first control valve 4 and the displacement of the closed type pump 2, and the first control valve 4 controls the displacement of the closed type pump 2 in the tensioning direction, and the assumption is that: the first control valve coil I41 is in the hoisting and lifting direction, namely the tensioning direction, and the current value of the first control valve coil 41 is adjusted to realize the displacement of the closed pump 2 in the required tensioning direction.
The continuous wall hydraulic grab bucket comprises the closed type hoisting tensioning control system and the closed type hoisting tensioning control method.
The closed type winch tensioning control system and method and the continuous wall hydraulic grab solve the problem that a steel wire rope is loosened to cause deviation of a formed groove when the grab bottom is touched and the grab is closed under different stratums through winch tensioning control, and meanwhile, the adopted closed type system avoids energy loss, can quickly adjust tensioning, improves the vertical quality of the formed groove, prolongs the service life of the steel wire rope and improves construction efficiency.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a closed hoist tensioning control system which characterized in that: comprises a closed pump (2) and a motor (3) which are connected with each other,
a pressure sensor (1) is arranged on a pipeline connecting the closed pump (2) and the motor (3), the closed pump (2) is connected with a first control valve (4),
the motor (3) is connected with a second control valve (5),
also comprises a controller (8),
the input end of the controller (8) is electrically connected with the pressure sensor (1), the engine control unit (6) and the display (7),
the output end of the controller (8) is electrically connected with the first control valve (4) and the second control valve (5).
2. The closed hoist tensioning control system of claim 1, wherein: the closed pump (2) is a bidirectional variable pump, and the motor (3) is a bidirectional variable motor.
3. The closed hoist tensioning control system of claim 1, wherein: the closed system is formed by the closed pump (2) and the motor (3), and an oil inlet and an oil outlet of the closed pump (2) are respectively in pipeline connection with an oil inlet and an oil outlet of the motor (3).
4. The closed hoist tensioning control system of claim 1, wherein: the first control valve (4) is a double-coil electro proportional valve, and the first control valve (4) comprises a first control valve coil I (41) and a first control valve coil II (42).
5. The closed hoist tensioning control system of claim 1, wherein: the second control valve (5) is a single coil electro proportional valve, the second control valve (5) comprising a second control valve coil (51).
6. The closed hoist tensioning control system of claim 1, wherein: the display (7) is provided with a parameter setting of the winding tension.
7. A method of using the closed hoist tensioning control system of claim 1, wherein: the method comprises the following steps:
s1, setting a winding tension parameter on a display (7);
s2, reading real-time rotating speed information of an engine control unit (6) and a winding tension parameter set by a display (7) by a controller (8), and calculating and storing matched target tension pressure information;
s3, the controller (8) matches the target displacement corresponding to the motor according to the stored target tensioning pressure information;
and S4, comparing the target tensioning pressure information with the real-time tensioning pressure measured by the pressure sensor (1) by the controller (8), and adjusting the displacement of the closed pump (2) in the tensioning direction when the target tensioning pressure information and the real-time tensioning pressure tend to be equal.
8. The closed winch tensioning control method according to claim 7, wherein: in the step S3, the controller (8) adjusts the current value of the second control valve (5) according to the curve relation between the current of the second control valve (5) and the displacement of the motor (3) to realize the required displacement of the motor.
9. The closed winch tensioning control method according to claim 7, wherein: in the step S4, the controller (8) adjusts the current value of the first control valve (4) according to the curve relation between the current of the first control valve (4) and the displacement of the closed pump (2), and the first control valve (4) controls the displacement of the closed pump (2) in the tensioning direction.
10. Continuous wall hydraulic grab bucket, its characterized in that: the closed hoist tensioning control system comprising any one of claims 1 to 6, further comprising the closed hoist tensioning control method of any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036767.0A CN115402961A (en) | 2022-08-29 | 2022-08-29 | Closed type winch tensioning control system and method and diaphragm wall hydraulic grab bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211036767.0A CN115402961A (en) | 2022-08-29 | 2022-08-29 | Closed type winch tensioning control system and method and diaphragm wall hydraulic grab bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115402961A true CN115402961A (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211036767.0A Pending CN115402961A (en) | 2022-08-29 | 2022-08-29 | Closed type winch tensioning control system and method and diaphragm wall hydraulic grab bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115402961A (en) |
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2022
- 2022-08-29 CN CN202211036767.0A patent/CN115402961A/en active Pending
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