CN115010026B - Method for monitoring main winch sucking idle sliding rod of rotary drilling rig - Google Patents
Method for monitoring main winch sucking idle sliding rod of rotary drilling rig Download PDFInfo
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- CN115010026B CN115010026B CN202210814357.8A CN202210814357A CN115010026B CN 115010026 B CN115010026 B CN 115010026B CN 202210814357 A CN202210814357 A CN 202210814357A CN 115010026 B CN115010026 B CN 115010026B
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- channel
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- lowering
- throttle valve
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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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- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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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
Abstract
A method for monitoring a main winch sucking slippage rod of a rotary drilling rig adopts a device for monitoring the main winch sucking slippage rod of the rotary drilling rig, and comprises a controller, a display screen, a lifting channel detection module and a lowering channel detection module; the lifting channel detection module comprises a lifting channel throttle valve and pressure sensors on two sides of the lifting channel throttle valve; the descending channel detection module comprises a descending channel throttle valve and pressure sensors on two sides of the descending channel throttle valve; the controller is respectively connected with each pressure sensor and the display screen; the method comprises the following specific steps: firstly, connecting a lifting channel detection module and a lowering channel detection module in a lifting channel and a lowering channel of a main winding motor; and starting the main winding motor, respectively measuring the pressure of each pressure sensor, calculating the flow of a lifting channel and the flow of a lowering channel by the controller according to the measured pressure, further calculating the volume efficiency of the main winding motor during working, comparing the volume efficiency with the standard volume efficiency of the main winding motor, and alarming if the volume efficiency is lower than the standard volume efficiency of the main winding motor.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a method for monitoring a main winch air-suction slide rod of a rotary drilling rig.
Background
The rotary drilling rig is a fully hydraulically-driven hole-taking and filling pile construction machine widely used in foundation construction, and is a periodically circulating device which drives a drill rod to drive a drill bucket to rotate, cut and drill by means of a power head, and then lifts the drill rod drill bucket to the outside of a hole through a main hoisting steel wire rope to discharge soil. The main winch is a particularly important part of the rotary drilling rig, and the performance of the main winch directly determines the performance of the whole rotary drilling rig. The sliding rod is one of the most difficult faults of a main hoisting device of the rotary drilling rig, the root cause of the sliding rod is suction emptying, a hoisting motor lifting cavity cannot form a pressure cavity due to suction emptying, further braking cannot be performed, and the reasons of suction emptying mainly include leakage, insufficient oil supplement, poor system matching and the like. The leakage, especially the leakage of the main winding motor can change along with the increase of the working life of the rotary drilling rig, because parts in the main winding motor, such as a plunger, a cylinder body, a flow distribution disc, a sliding shoe and the like, can be worn along with the working time, the volumetric efficiency of the main winding motor is reduced, the leakage amount is increased, when the leakage amount is greater than the oil supplement amount, the main winding motor can be sucked, and the brake cannot be completed to slide a rod. The sliding rod damages the winch device when the sliding rod is light, and the sliding rod causes the safety accidents of smashing the rod, burying the drill and even tipping the drilling machine when the sliding rod is heavy. Therefore, the volumetric efficiency of the motor needs to be monitored to prevent the occurrence of the sucking slip rod accident.
In the existing method, a main winding motor is generally detached from a main machine to be connected with a professional test bench to detect the volumetric efficiency, the main winding motor is repaired or replaced when having a problem, the problem is solved, the main winding motor is assembled again, time and labor are consumed, and a pipeline is exposed on a construction site for a long time, so that the hydraulic system is easily polluted.
Therefore, a new method for monitoring the main winch and the idle rod of the rotary drilling rig needs to be designed, and detection can be rapidly completed on a construction site.
Disclosure of Invention
The invention aims to provide a method for monitoring the rod sucking and slipping of a main winch of a rotary drilling rig, and aims to solve the problem that the rod sucking and slipping of the main winch of the rotary drilling rig is difficult to monitor and prevent in the prior art.
In order to achieve the purpose, the invention provides a method for monitoring the main winch sucking slippage rod of the rotary drilling rig, wherein a device for monitoring the main winch sucking slippage rod of the rotary drilling rig is adopted in the method for monitoring the main winch sucking slippage rod of the rotary drilling rig, and the device for monitoring the main winch sucking slippage rod of the rotary drilling rig comprises a controller, a display screen, a lifting channel detection module and a lowering channel detection module;
the lifting channel detection module comprises a lifting channel inlet pressure sensor, a lifting channel throttle valve and a lifting channel outlet pressure sensor; the lifting channel inlet pressure sensor is arranged at the inlet end of the lifting channel throttle valve, and the lifting channel outlet pressure sensor is arranged at the outlet end of the lifting channel throttle valve;
the lower channel detection module comprises a lower channel inlet pressure sensor, a lower channel throttle valve and a lower channel outlet pressure sensor; the pressure sensor at the inlet of the lower channel is arranged at the inlet end of the throttle valve of the lower channel, and the pressure sensor at the outlet of the lower channel is arranged at the outlet end of the throttle valve of the lower channel;
the controller is respectively connected with the lifting channel inlet pressure sensor, the lifting channel outlet pressure sensor, the lowering channel inlet pressure sensor, the lowering channel outlet pressure sensor and the display screen;
the method comprises the following specific steps:
connecting a lifting channel detection module in a lifting channel of a main winding motor, and connecting a lowering channel detection module in a lowering channel of the main winding motor;
starting a main winding motor, respectively measuring the inlet end pressure P1 of a lifting channel throttle valve and the outlet end pressure P2 of the lifting channel throttle valve through a lifting channel inlet pressure sensor and a lifting channel outlet pressure sensor, respectively measuring the inlet end pressure P3 of a lowering channel throttle valve and the outlet end pressure P4 of the lowering channel throttle valve through a lowering channel inlet pressure sensor and a lowering channel outlet pressure sensor,
the controller calculates a lifting channel flow Q1 through the measured inlet end pressure P1 of the lifting channel throttle valve and the measured outlet end pressure P2 of the lifting channel throttle valve, calculates a lowering channel flow Q2 through the measured inlet end pressure P3 of the lowering channel throttle valve and the measured outlet end pressure P4 of the lowering channel throttle valve, further calculates a volume efficiency eta of the main winding motor during working, compares the calculated volume efficiency eta of the main winding motor during working with a standard volume efficiency of the main winding motor which is arranged in the controller in advance, and outputs an alarm signal to the display screen to display alarm information when the volume efficiency eta of the main winding motor during working is lower than the standard volume efficiency of the main winding motor.
In a specific embodiment, the controller is a programmable controller.
In a specific embodiment, the orifice sectional areas of the orifices of the lift passage throttle valve and the lower passage throttle valve are the same.
In a specific embodiment, the calculation formula of the lift channel flow Q1 is:
the calculation formula of the flow Q2 of the downward channel is as follows:
the calculation formula of the volumetric efficiency eta of the main winding motor during working is as follows:
wherein, C q Is the flow coefficient, A 0 ρ is the density of the fluid, which is the orifice cross-sectional area.
In a specific embodiment, the display screen is a human-computer interaction display screen.
In a specific embodiment, when no detection is needed, the lift port of the main roll motor is connected to the lift access port and the lower port of the main roll motor is connected to the lower access port;
when detection is needed, a lifting channel detection module and a lowering channel detection module are respectively accessed, wherein the lifting channel detection module is accessed between a lifting port and a lifting channel port of a main winding motor, and the lowering channel detection module is accessed between a lowering port and a lowering channel port of the main winding motor;
the lifting port of the main winding motor, the lifting channel port, the lowering port of the main winding motor, the lowering channel port, and the connecting ports on the lifting channel detection module and the lowering channel detection module are all ports in the form of quick-change connectors.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a method for preventing the sucking and the emptying of the slide rod by detecting the volumetric efficiency of the main hoisting motor on line in a construction site without disassembling and assembling the motor, which not only saves time and labor, but also reduces the risk of polluting a hydraulic system.
The invention can quickly determine whether the main winding motor needs to be maintained or replaced, plays a better monitoring role, and effectively prevents the main winch of the rotary drilling rig from sucking the slipping rod.
The ports to be connected are all ports in a quick-change connector form, so that the connection process is convenient and quick.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic illustration of a monitoring process according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of monitoring information delivery according to an embodiment of the present invention;
wherein, 1, lifting the entrance pressure sensor of the channel; 2. a lift channel throttle valve; 3. a hoistway exit pressure sensor; 4. a primary reel motor; 5. an inlet pressure sensor of the lowering channel; 6. a discharging channel throttle valve; 7. a pressure sensor at the outlet of the lowering channel; a1, lowering a port; a2, lowering a channel port; b1, lifting a port; b2, lifting the channel port.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A method for monitoring a main winch slippage absorbing rod of a rotary drilling rig adopts a device for monitoring the main winch slippage absorbing rod of the rotary drilling rig, and the device for monitoring the main winch slippage absorbing rod of the rotary drilling rig comprises a controller, a display screen, a lifting channel detection module and a lowering channel detection module;
the lifting channel detection module comprises a lifting channel inlet pressure sensor 1, a lifting channel throttle valve 2 and a lifting channel outlet pressure sensor 3; the lifting channel inlet pressure sensor 1 is arranged at the inlet end of the lifting channel throttle valve 2, and the lifting channel outlet pressure sensor 3 is arranged at the outlet end of the lifting channel throttle valve 2;
the descending channel detection module comprises a descending channel inlet pressure sensor 5, a descending channel throttle valve 6 and a descending channel outlet pressure sensor 7; the lower channel inlet pressure sensor 5 is arranged at the inlet end of the lower channel throttle valve 6, and the lower channel outlet pressure sensor 7 is arranged at the outlet end of the lower channel throttle valve 6;
the controller is respectively connected with the lifting channel inlet pressure sensor 1, the lifting channel outlet pressure sensor 3, the lowering channel inlet pressure sensor 5, the lowering channel outlet pressure sensor 7 and the display screen;
the method comprises the following specific steps:
firstly, connecting a lifting channel detection module in a lifting channel of a main winding motor 4, and connecting a lowering channel detection module in a lowering channel of the main winding motor 4;
the main winding motor 4 is started, the inlet pressure P1 of the lifting channel throttle valve 2 and the outlet pressure P2 of the lifting channel throttle valve 2 are respectively measured by a lifting channel inlet pressure sensor 1 and a lifting channel outlet pressure sensor 3, the inlet pressure P3 of the lowering channel throttle valve 6 and the outlet pressure P4 of the lowering channel throttle valve 6 are respectively measured by a lowering channel inlet pressure sensor 5 and a lowering channel outlet pressure sensor 7,
the controller calculates a lifting channel flow Q1 through the measured inlet end pressure P1 of the lifting channel throttle valve 2 and the measured outlet end pressure P2 of the lifting channel throttle valve 2, calculates a lowering channel flow Q2 through the measured inlet end pressure P3 of the lowering channel throttle valve 6 and the measured outlet end pressure P4 of the lowering channel throttle valve 6, further calculates a volumetric efficiency eta of the main winding motor 4 during working, compares the calculated volumetric efficiency eta of the main winding motor 4 during working with a standard volumetric efficiency of the main winding motor 4 which is arranged in the controller in advance, and outputs an alarm signal to the display screen to enable the display screen to display alarm information when the volumetric efficiency eta of the main winding motor 4 during working is lower than the standard volumetric efficiency of the main winding motor 4.
The controller is a programmable controller.
The orifice sectional areas of the orifices of the lift passage throttle valve 2 and the lower passage throttle valve 6 are the same.
The calculation formula of the flow Q1 of the lifting channel is as follows:
the calculation formula of the flow Q2 of the downward channel is as follows:
the calculation formula of the volumetric efficiency η when the main winding motor 4 operates is:
wherein, C q Is the flow coefficient, A 0 The cross-sectional area of the orifice, ρ is the density of the fluid, and both are constant values.
The display screen is a man-machine interaction display screen, and related control operation is conveniently carried out.
When detection is not needed, a lifting port B1 of the main winding motor 4 is connected with a lifting channel port B2, and a lowering port A1 of the main winding motor 4 is connected with a lowering channel port A2;
when detection is needed, a lifting channel detection module and a lowering channel detection module are respectively accessed, wherein the lifting channel detection module is accessed between a lifting port B1 and a lifting channel port B2 of a main roll motor 4, and the lowering channel detection module is accessed between a lowering port A1 and a lowering channel port A2 of the main roll motor 4;
the promotion port B1 of main roll motor 4, promotion passageway port B2, the main roll motor 4 transfer port A1, transfer passageway port A2 and promote passageway detection module and transfer the connection port on the passageway detection module and be the port of quick change coupler form, easy dismounting, labour saving and time saving.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions and substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. A method for monitoring a main winch sucking slippage rod of a rotary drilling rig is characterized in that a device for monitoring the main winch sucking slippage rod of the rotary drilling rig is adopted, and the device for monitoring the main winch sucking slippage rod of the rotary drilling rig comprises a controller, a display screen, a lifting channel detection module and a lowering channel detection module;
the lifting channel detection module comprises a lifting channel inlet pressure sensor (1), a lifting channel throttle valve (2) and a lifting channel outlet pressure sensor (3); the lifting channel inlet pressure sensor (1) is arranged at the inlet end of the lifting channel throttle valve (2), and the lifting channel outlet pressure sensor (3) is arranged at the outlet end of the lifting channel throttle valve (2);
the lower channel detection module comprises a lower channel inlet pressure sensor (5), a lower channel throttle valve (6) and a lower channel outlet pressure sensor (7); the lower channel inlet pressure sensor (5) is arranged at the inlet end of the lower channel throttle valve (6), and the lower channel outlet pressure sensor (7) is arranged at the outlet end of the lower channel throttle valve (6);
the controller is respectively connected with the lifting channel inlet pressure sensor (1), the lifting channel outlet pressure sensor (3), the lowering channel inlet pressure sensor (5), the lowering channel outlet pressure sensor (7) and the display screen;
the method comprises the following specific steps:
firstly, connecting a lifting channel detection module in a lifting channel of a main roll motor (4), and connecting a lowering channel detection module in a lowering channel of the main roll motor (4);
starting a main winding motor (4), respectively measuring an inlet end pressure P1 of a lifting channel throttle valve (2) and an outlet end pressure P2 of the lifting channel throttle valve (2) through a lifting channel inlet pressure sensor (1) and a lifting channel outlet pressure sensor (3), respectively measuring an inlet end pressure P3 of a lowering channel throttle valve (6) and an outlet end pressure P4 of the lowering channel throttle valve (6) through a lowering channel inlet pressure sensor (5) and a lowering channel outlet pressure sensor (7),
the controller calculates a lifting channel flow Q1 through the measured inlet end pressure P1 of the lifting channel throttle valve (2) and the measured outlet end pressure P2 of the lifting channel throttle valve (2), calculates a lowering channel flow Q2 through the measured inlet end pressure P3 of the lowering channel throttle valve (6) and the measured outlet end pressure P4 of the lowering channel throttle valve (6), further calculates a volume efficiency eta of the main winding motor (4) during working, compares the calculated volume efficiency eta of the main winding motor (4) during working with a standard volume efficiency of the main winding motor (4) which is arranged in the controller in advance, and outputs an alarm signal to a display screen to display alarm information when the volume efficiency eta of the main winding motor (4) during working is lower than the standard volume efficiency of the main winding motor (4).
2. The method for monitoring the idle rod of the main winch of the rotary drilling rig according to claim 1, wherein the controller is a programmable controller.
3. The method for monitoring the main winch sucking idle rod of the rotary drilling rig according to claim 1, wherein the orifice cross-sectional areas of the orifices of the lifting channel throttle valve (2) and the lowering channel throttle valve (6) are the same.
4. The method for monitoring the main winch sucking idle rod of the rotary drilling rig according to claim 3, wherein the calculation formula of the flow Q1 of the lifting channel is as follows:
the calculation formula of the flow Q2 of the lowering channel is as follows:
the calculation formula of the volume efficiency eta when the main winding motor (4) works is as follows:
wherein, C q Is the flow coefficient, A 0 ρ is the density of the fluid, which is the orifice cross-sectional area.
5. The method for monitoring the idle rod of the main winch of the rotary drilling rig according to claim 1, wherein the display screen is a human-computer interaction display screen.
6. The method for monitoring the main winch sucking slippage of the rotary drilling rig according to claim 1, wherein when detection is not needed, a lifting port (B1) of a main winding motor (4) is connected with a lifting channel port (B2), and a lowering port (A1) of the main winding motor (4) is connected with a lowering channel port (A2);
when detection is needed, a lifting channel detection module and a lowering channel detection module are respectively accessed, wherein the lifting channel detection module is accessed between a lifting port (B1) and a lifting channel port (B2) of a main winding motor (4), and the lowering channel detection module is accessed between a lowering port (A1) and a lowering channel port (A2) of the main winding motor (4);
the lifting port (B1) and the lifting channel port (B2) of the main roll motor (4), the lowering port (A1) and the lowering channel port (A2) of the main roll motor (4), and the connecting ports on the lifting channel detection module and the lowering channel detection module are all ports in the form of quick-change connectors.
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| CN202210814357.8A CN115010026B (en) | 2022-07-12 | 2022-07-12 | Method for monitoring main winch sucking idle sliding rod of rotary drilling rig |
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| CN115010026B true CN115010026B (en) | 2023-04-18 |
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