CN113915179A - Spiral pile forming system and method with main hoisting speed and power head rotating speed matched in real time and rotary drilling rig - Google Patents
Spiral pile forming system and method with main hoisting speed and power head rotating speed matched in real time and rotary drilling rig Download PDFInfo
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- CN113915179A CN113915179A CN202111163680.5A CN202111163680A CN113915179A CN 113915179 A CN113915179 A CN 113915179A CN 202111163680 A CN202111163680 A CN 202111163680A CN 113915179 A CN113915179 A CN 113915179A
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- speed
- power head
- rotating speed
- real time
- main hoisting
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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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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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
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
- B66D1/46—Control devices non-automatic electric
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
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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
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
The invention discloses a spiral pile forming system and method for matching a main hoisting speed and a power head rotating speed in real time and a rotary drilling rig, wherein the system comprises a first reversing valve, a second reversing valve, a first pump, a second pump, a main hoisting motor, a power head motor and a controller, and further comprises the following steps: the first knob, the second knob, the first proportional pressure reducing valve and the second proportional pressure reducing valve; the first knob is used for outputting pilot pressure to the first reversing valve by controlling the first proportional pressure reducing valve so as to set the rotating speed of the power head, the second knob is used for setting the multiplying power between the main hoisting speed and the rotating speed of the power head, and the controller is used for controlling the second proportional pressure reducing valve to output feedback pressure to the second pump according to the rotating speed of the power head and the set multiplying power so as to adjust the main hoisting speed in real time and enable the main hoisting speed to be matched with the rotating speed of the power head in real time. The invention can realize real-time matching of the main hoisting speed and the power head rotating speed, reduce the manual operation difficulty and improve the working efficiency.
Description
Technical Field
The invention relates to a spiral pile forming system and method with a main hoisting speed and a power head rotating speed matched in real time and a rotary drilling rig, and belongs to the technical field of engineering machinery.
Background
The rotary drilling rig is a pile-worker type hole-forming operation device, and in some construction fields, spiral pile-forming operation is required, namely the rotary drilling rig is required to perform lifting operation by a main winch while performing power head rotation operation, a raised structure is arranged in the circumferential direction of a drill bit, a spiral pit is formed on the wall of the hole along with the rotation and the lifting of the drill bit, and the spiral pit is directly filled when concrete is poured.
The spiral pile-forming operation is carried out, the most important is the matching of the rotation speed and the lifting speed of the drill bit, and the constant multiplying power relation between the rotation speed of the drill bit and the lifting speed is required to be kept for enabling the thread pitch of the formed spiral pits to be regular and uniform. This requires that the rotary drilling rig has the following functional requirements: the method comprises the steps of firstly, matching the main hoisting speed with the rotating speed of the power head in real time, secondly, realizing the adjustable matching relationship of the main hoisting speed and the rotating speed of the power head according to different pile-forming thread pitch requirements, thirdly, when the rotating speed of the power head fluctuates due to the change of the load of a drill bit, automatically adjusting the main hoisting speed in time, fourthly, the multiplying power of the main hoisting speed and the rotating speed of the power head must be constant all the time, and the precision is high.
In the prior art, during actual operation, a manipulator operates a first handle to rotate a power head and operates a second handle to lift a main winch, the opening of the handles is manually controlled, the constant matching relationship between the speed of the main winch and the rotating speed of the power head is difficult to keep, and a formed spiral pile is irregular and basically cannot meet construction requirements.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a spiral pile forming system and method for matching the main hoisting speed with the rotating speed of a power head in real time and a rotary drilling rig, which can realize the real-time matching of the main hoisting speed and the rotating speed of the power head, reduce the manual operation difficulty and improve the working efficiency.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
in a first aspect, the present invention provides a spiral pile-forming system with a main hoisting speed matched with a power head rotation speed in real time, which includes a first directional valve, a second directional valve, a first pump, a second pump, a main hoisting motor, a power head motor and a controller, wherein the first pump is used for supplying oil to the main hoisting motor through the first directional valve, and the second pump is used for supplying oil to the power head motor through the second directional valve, and the system further includes: the first knob, the second knob, the first proportional pressure reducing valve and the second proportional pressure reducing valve;
the first knob is used for outputting pilot pressure to the first reversing valve by controlling the first proportional pressure reducing valve so as to set the rotating speed of the power head, and the rotating speed of the power head is marked as n;
the second knob is used for setting a multiplying power between a main winding speed and a power head rotating speed, the main winding speed is marked as ʋ, and the multiplying power is marked as delta;
and the controller is used for controlling the second proportional pressure reducing valve to output feedback pressure to the second pump according to the rotating speed of the power head and the set multiplying power, so that the main hoisting speed meets ʋ = delta x n, and the real-time matching between the main hoisting speed and the rotating speed of the power head is realized for performing spiral pile forming.
In a preferred embodiment, the controller is electrically connected with a pressure relay, the pressure relay is connected with a second handle, and the pressure relay is used for monitoring whether the second handle is opened or not.
In a preferred embodiment, the controller is electrically connected with a spiral piling mode switch, and the spiral piling mode switch is used for controlling the start and stop of the spiral piling mode.
As a preferred embodiment, a first shuttle valve is arranged between the first proportional pressure reducing valve and the first reversing valve, a first handle is connected to the first shuttle valve, and the first shuttle valve is used for realizing manual or automatic reversing of the first reversing valve.
In a preferred embodiment, a second shuttle valve is arranged between the second proportional pressure reducing valve and the second reversing valve, the second shuttle valve is connected with the second pump, and the second shuttle valve is used for feeding back an output pressure signal of the second proportional pressure reducing valve or a feedback pressure signal of the second reversing valve to the second pump.
As a preferred embodiment, the controller is further electrically connected with a first rotation speed sensor for detecting the rotation speed of the power head in real time and a second rotation speed sensor for detecting the main winding speed in real time.
In a second aspect, the invention provides a spiral pile-forming method, which adopts a system for matching the main hoisting speed with the rotating speed of a power head in real time, and comprises the following steps:
the controller obtains the set power head rotating speed n when the first knob controls the pilot pressure output by the first proportional pressure reducing valve to the first reversing valve;
the controller obtains the multiplying power delta between the main winding speed set by the second knob and the rotating speed of the power head;
the controller controls the second proportional pressure reducing valve to output feedback pressure to the second pump according to the rotating speed of the power head and the set multiplying power so as to adjust the main winding speed ʋ in real time, the main winding speed meets v = delta x n in real time, and real-time matching of the main winding speed and the rotating speed of the power head is achieved.
As a preferred embodiment, after acquiring the multiplying factor δ between the main winding speed v and the power head rotation speed n set by the second knob, the controller further includes the following steps:
the controller acquires the start-stop state of the second handle monitored by the pressure relay;
the controller acquires the power head rotating speed detected by the first rotating speed sensor in real time and the main hoisting speed detected by the second rotating speed sensor in real time;
the controller obtains the start-stop state of the spiral pile forming mode switch.
As a preferred embodiment, when the second handle is in an open state and the spiral pile forming mode switch is in an open state, the controller controls the second proportional pressure reducing valve to output feedback pressure to the second pump, so as to adjust the main hoisting speed in real time, and the main hoisting speed meets the requirement of v = δ × n in real time, thereby realizing real-time matching of the main hoisting speed and the rotation speed of the power head.
When the second handle is in a closed state or the spiral pile forming mode switch is in a closed state, the controller controls the second proportional pressure reducing valve to enable the second proportional pressure reducing valve to stop outputting feedback pressure to the second pump.
In a third aspect, the invention further provides a rotary drilling rig, which comprises a spiral pile forming system with the main hoisting speed matched with the rotating speed of the power head in real time.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a spiral pile forming system with a main hoisting speed matched with a power head rotating speed in real time, which comprises a pump I, a pump II, a main hoisting motor, a power head motor, a controller, a first knob, a second knob, a first proportional pressure reducing valve, a second proportional pressure reducing valve and the like, wherein the first knob can be used for outputting pilot pressure to a first reversing valve by controlling the first proportional pressure reducing valve so as to set the rotating speed of the power head, the second knob can be used for setting multiplying power between the main hoisting speed and the rotating speed of the power head, and the controller can be used for controlling the second proportional pressure reducing valve to output feedback pressure to the pump II according to the rotating speed of the power head and the set multiplying power so as to adjust the main hoisting speed in real time, so that the main hoisting speed is matched with the rotating speed of the power head in real time, the manual operation difficulty is reduced, and the working efficiency is improved.
2. The invention provides a spiral pile-forming method, which adopts a system that the main hoisting speed is matched with the rotating speed of a power head in real time, and a controller controls a second proportional pressure reducing valve to output feedback pressure to a second pump by acquiring the rotating speed of the power head and according to the rotating speed of the power head and the set multiplying power so as to adjust the main hoisting speed in real time and ensure that the main hoisting speed is matched with the rotating speed of the power head in real time. The invention can meet the requirements of different pile-forming screw pitches by setting different multiplying powers, and meanwhile, the method has the advantages of quick response, high output speed precision and the like.
3. The invention also provides a rotary drilling rig which comprises a spiral pile forming system with the main hoisting speed matched with the rotating speed of the power head in real time. The rotary drilling rig can keep the main hoisting speed and the power head rotating speed constant by adopting the spiral pile forming system so as to form a spiral pile shape with regular and uniform thread pitch and meet the construction requirement.
Drawings
Fig. 1 is a schematic diagram of a spiral pile-forming system in which a main hoisting speed is matched with a power head rotating speed in real time according to an embodiment of the present invention;
fig. 2 is a flowchart of a spiral pile-forming method for matching a main hoisting speed and a power head rotation speed in real time according to an embodiment of the present invention;
in the figure: 1. a first pump; 2. a second pump; 3. a first direction changing valve; 4. a second directional control valve; 5. a power head motor; 6. a main hoist motor; 7. a first handle; 8. a second handle; 9. a first rotational speed sensor; 10. a second rotational speed sensor; 11. a controller; 12. a pressure relay; 13. a first proportional pressure reducing valve; 14. a second proportional pressure reducing valve; 15. a first shuttle valve; 16. a second shuttle valve; 17. a first knob; 18. a second knob; 19. spiral pile-forming mode switch.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The first embodiment is as follows:
the invention provides a spiral pile forming system with a main hoisting speed matched with a power head rotating speed in real time, and the system comprises a first reversing valve 3, a second reversing valve 4, a first pump 1, a second pump 2, a main hoisting motor 6, a power head motor 5 and a controller 11, and also comprises: a first knob 17, a second knob 18, a first proportional pressure relief valve 13 and a second proportional pressure relief valve 14.
The first pump 1 is connected with the first reversing valve 3, the first reversing valve 3 is connected with the power head motor 5, the second pump 2 is connected with the second reversing valve 4, and the second reversing valve 4 is connected with the main hoisting motor 6, and it should be understood by those skilled in the art that the first pump 1 is used for supplying oil to the main hoisting motor 6 through the first reversing valve 3, and the second pump 2 is used for supplying oil to the power head motor 5 through the second reversing valve 4.
In this embodiment, the controller 11 is electrically connected to a first knob 17, the first knob 17 is connected to the first proportional pressure reducing valve 13, and the first knob 17 is configured to control the first proportional pressure reducing valve 13 to output pilot pressure to the first directional valve 3, so that the pilot pressure output by the first proportional pressure reducing valve 13 corresponds to the output flow of the first directional valve 3 one by one, and is used to set the rotation speed of the power head, thereby setting the automatic rotation and the initial rotation speed of the power head motor 5.
In this embodiment, the power head rotation speed mark is n, the controller 11 is further electrically connected to a first rotation speed sensor 9, the first rotation speed sensor 9 is used for detecting the power head rotation speed in real time, and the controller 11 acquires the power head rotation speed through the first rotation speed sensor 9.
The controller 11 is electrically connected with a second knob 18, the second knob 18 is used for setting a multiplying power between a main hoisting speed and a power head rotating speed, the main hoisting speed is marked as ʋ, the multiplying power is marked as delta, the controller 11 is further electrically connected with a second rotating speed sensor 10, the second rotating speed sensor 10 is used for detecting the main hoisting speed in real time, the controller 11 can control the second proportional pressure reducing valve 14 to output feedback pressure to the second pump 2 according to the power head rotating speed and the set multiplying power so as to adjust the main hoisting speed in real time, the main hoisting speed is enabled to meet ʋ = delta x n, and real-time matching of the main hoisting speed and the power head rotating speed is achieved.
It should be noted that the multiplying factor between the main hoisting speed set by the second knob 18 and the rotation speed of the power head refers to the pitch size when the pile is spirally formed, that is, the hoisting distance of the main hoisting when the power head rotates for one turn, and those skilled in the art can set different multiplying factors to meet the requirements of different pile-forming pitches.
In this embodiment, the controller 11 is further electrically connected to a pressure relay 12, the second handle 8 is connected to the pressure relay 12, and the pressure relay 12 is configured to monitor whether the second handle 8 is turned on, that is, detect whether there is a pressure output on the second handle 8 through the pressure relay 12, so as to determine whether the second handle 8 is turned on, in which case, the controller 11 can obtain a signal indicating whether the second handle 8 is turned on, which is monitored by the pressure relay 12.
In order to control the power head to rotate to perform spiral pile forming operation, the controller 11 is electrically connected with a spiral pile forming mode switch 19, the spiral pile forming mode switch 19 is used for controlling starting and stopping of a spiral pile forming mode, when the spiral pile forming mode switch 19 is opened or closed, the controller 11 can obtain a pressure output signal of the second handle 8 or no pressure output signal through the pressure relay 12, so that whether the second handle 8 is opened or not is judged, when the second handle 8 is opened, the fact that the rotary drilling rig is performing main hoisting lifting action is indicated, and when the second handle 8 is closed, the main hoisting stops acting.
In order to realize manual or automatic reversing of the power head, a first shuttle valve 15 is further arranged in the system, the first shuttle valve 15 is arranged between the first proportional pressure reducing valve 13 and the first reversing valve 3, a first handle 7 is connected to the first shuttle valve 15, and the first shuttle valve 15 is used for realizing manual or automatic reversing of the first reversing valve 3.
Specifically, an output port of the first proportional pressure reducing valve 13 is connected with an input port of a first shuttle valve 15, an output port of the first handle 7 is connected with an input port of the first shuttle valve 15, an output port of the first shuttle valve 15 is connected with a pilot port of the first reversing valve 3, manual and automatic reversing of the first reversing valve 3 can be realized by connecting the first proportional pressure reducing valve 13 in parallel with the first handle 7, and it should be understood that the first handle 7 can still realize normal reversing operation of the first reversing valve 3.
In this embodiment, a second shuttle valve 16 is disposed between the second proportional pressure reducing valve 14 and the second direction valve 4, the second shuttle valve 16 is connected to the second pump 2, and the second shuttle valve 16 is configured to feed back an output pressure signal of the second proportional pressure reducing valve 14 or a feedback pressure signal of the second direction valve 4 to the second pump 2.
Specifically, the output port of the second proportional pressure reducing valve 14 is connected with the input port of the second shuttle valve 16, the feedback port of the second reversing valve 4 is connected with the input port of the second shuttle valve 16, and the output port of the second shuttle valve 16 is connected with the feedback port of the second pump 2. When the second shuttle valve 16 is connected with the feedback ports of the second proportional pressure reducing valve 14 and the second reversing valve 4, the second shuttle valve 16 can realize the override control of the feedback pressure of the pump II 2, and when the control signal of the second proportional pressure reducing valve 14 is interrupted, the second reversing valve 4 can still realize the control of the feedback pressure of the pump II 2.
The controller 11 adopts closed-loop PID control with the multiplying power δ as a control target to control the second proportional pressure reducing valve 14, has the advantages of rapid response, high output speed precision and the like, and can ensure that the main winding speed has good stability and high precision, thereby ensuring that the main winding speed is matched with the rotating speed of the power head in real time.
When the second handle 8 is opened and the spiral pile forming mode switch 19 is opened, the controller 11 controls the feedback pressure output from the second proportional pressure reducing valve 14 to the pump two 2 in real time through the acquired main winding speed v signal and power head rotation speed n signal and closed-loop PID control with the multiplying factor δ as a control target, so that the main winding speed meets v = δ × n in real time, that is, when the second handle 8 is opened and the spiral pile forming mode switch 19 is opened, the rotary drilling rig can perform subsequent spiral pile forming construction operation.
When the second handle 8 is closed or the spiral pile forming mode switch 19 is closed, the control signal output to the second proportional pressure reducing valve 14 by the controller 11 is immediately interrupted and the initial value is restored, the rotary drilling rig does not perform spiral pile forming construction operation any more, and only the original construction state is maintained.
Example two:
the invention provides a spiral pile-forming method, which adopts the spiral pile-forming system with the main hoisting speed matched with the rotating speed of a power head in real time, and a flow chart of the method, please refer to fig. 2, comprises the following steps:
the method comprises the following steps: the controller 11 obtains the set power head rotating speed n when the first knob 17 controls the pilot pressure output by the first proportional pressure reducing valve 13 to the first reversing valve 3;
step two: the controller 11 obtains the multiplying factor delta between the main winding speed set by the second knob 18 and the rotating speed of the power head;
step three: the controller 11 controls the second proportional pressure reducing valve 14 to output feedback pressure to the second pump 2 according to the rotation speed of the power head and the set multiplying power, so as to adjust the main winding speed ʋ in real time, and the main winding speed meets the requirement of v = δ × n in real time, so that the main winding speed is matched with the rotation speed of the power head in real time.
According to the invention, the feedback signal of the second pump 2 is adjusted in real time through the controller 11, so that the second reversing valve 4 can respond quickly, when the rotation speed of the power head fluctuates due to the change of the drill bit load of the rotary drilling rig, the main hoisting speed can be adjusted along with the change of the drill bit load, so that the main hoisting speed is matched with the rotation speed of the power head in real time, and the rotary drilling rig has the advantages of high output speed precision and the like. Meanwhile, the invention can meet the requirements of different pile-forming screw pitches by setting different multiplying powers.
Example three:
the invention also provides a rotary drilling rig, which adopts the spiral pile forming system with the main hoisting speed matched with the rotating speed of the power head in real time.
The rotary drilling rig can keep the main hoisting speed and the power head rotating speed constant by adopting the spiral pile forming system so as to carry out spiral pile forming, thereby forming a spiral pile shape with regular and uniform thread pitch and meeting the construction requirement.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a spiral stake system that main hoist speed and unit head rotational speed match in real time, includes first switching-over valve, second switching-over valve, pump one, pump two, main hoist motor, unit head motor and controller, and pump one is used for supplying oil to main hoist motor through first switching-over valve, and the pump two-purpose is used for supplying oil to the unit head motor through second switching-over valve, its characterized in that still includes: the first knob, the second knob, the first proportional pressure reducing valve and the second proportional pressure reducing valve;
the first knob is used for outputting pilot pressure to the first reversing valve by controlling the first proportional pressure reducing valve so as to set the rotating speed of the power head, and the rotating speed of the power head is marked as n;
the second knob is used for setting a multiplying power between a main winding speed and a power head rotating speed, the main winding speed is marked as ʋ, and the multiplying power is marked as delta;
and the controller is used for controlling the second proportional pressure reducing valve to output feedback pressure to the second pump according to the rotating speed of the power head and the set multiplying power, so that the main hoisting speed meets ʋ = delta x n, and the real-time matching between the main hoisting speed and the rotating speed of the power head is realized for performing spiral pile forming.
2. The spiral pile-forming system with the main hoisting speed matched with the power head rotating speed in real time as claimed in claim 1, wherein the controller is electrically connected with a pressure relay, the pressure relay is connected with a second handle, and the pressure relay is used for monitoring whether the second handle is opened or not.
3. The spiral pile-forming system with the main hoisting speed matched with the power head rotating speed in real time according to claim 1, wherein the controller is electrically connected with a spiral pile-forming mode switch, and the spiral pile-forming mode switch is used for controlling starting and stopping of a spiral pile-forming mode.
4. The spiral pile-forming system with the main hoisting speed matched with the power head rotating speed in real time according to claim 1, wherein a first shuttle valve is arranged between the first proportional pressure reducing valve and the first reversing valve, a first handle is connected to the first shuttle valve, and the first shuttle valve is used for realizing manual or automatic reversing of the first reversing valve.
5. The spiral pile-forming system with the main hoisting speed matched with the power head rotating speed in real time according to claim 1, wherein a second shuttle valve is arranged between the second proportional pressure reducing valve and a second reversing valve, the second shuttle valve is connected with a second pump, and the second shuttle valve is used for feeding back an output pressure signal of the second proportional pressure reducing valve or a feedback pressure signal of the second reversing valve to the second pump.
6. The spiral pile-forming system with the main hoisting speed matched with the power head rotating speed in real time as claimed in claim 1, wherein the controller is further electrically connected with a first rotating speed sensor for detecting the power head rotating speed in real time and a second rotating speed sensor for detecting the main hoisting speed in real time.
7. A spiral pile forming method adopts a system for matching the main hoisting speed and the rotating speed of a power head in real time according to any one of claims 1 to 6, and is characterized by comprising the following steps:
the controller obtains the set power head rotating speed n when the first knob controls the pilot pressure output by the first proportional pressure reducing valve to the first reversing valve;
the controller obtains the multiplying power delta between the main winding speed set by the second knob and the rotating speed of the power head;
the controller controls the second proportional pressure reducing valve to output feedback pressure to the second pump according to the rotating speed of the power head and the set multiplying power so as to adjust the main winding speed ʋ in real time, the main winding speed meets v = delta x n in real time, and real-time matching of the main winding speed and the rotating speed of the power head is achieved.
8. The spiral pile forming method for matching the main hoisting speed with the power head rotating speed in real time according to claim 7, wherein after the controller obtains a multiplying factor δ between the main hoisting speed v set by the second knob and the power head rotating speed n, the method further comprises the following steps:
the controller acquires the start-stop state of the second handle monitored by the pressure relay;
the controller acquires the power head rotating speed detected by the first rotating speed sensor in real time and the main hoisting speed detected by the second rotating speed sensor in real time;
the controller obtains the start-stop state of the spiral pile forming mode switch.
9. The spiral pile-forming method of real-time matching of the main hoisting speed and the power head rotation speed according to claim 8,
when the second handle is in an open state and the spiral pile forming mode switch is in an open state, the controller controls the second proportional pressure reducing valve to output feedback pressure to the second pump, and adjusts the main hoisting speed in real time, so that the main hoisting speed meets v = delta x n in real time, and the real-time matching of the main hoisting speed and the rotating speed of the power head is realized;
when the second handle is in a closed state or the spiral pile forming mode switch is in a closed state, the controller controls the second proportional pressure reducing valve to enable the second proportional pressure reducing valve to stop outputting feedback pressure to the second pump.
10. A rotary drilling rig is characterized by comprising the spiral pile forming system which is used for matching the main hoisting speed with the rotating speed of a power head in real time according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111163680.5A CN113915179A (en) | 2021-09-30 | 2021-09-30 | Spiral pile forming system and method with main hoisting speed and power head rotating speed matched in real time and rotary drilling rig |
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| CN202111163680.5A CN113915179A (en) | 2021-09-30 | 2021-09-30 | Spiral pile forming system and method with main hoisting speed and power head rotating speed matched in real time and rotary drilling rig |
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| CN102424336A (en) * | 2011-11-25 | 2012-04-25 | 北京市三一重机有限公司 | Rotary drilling rig and main winch placing down speed control device thereof |
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| CN106522208A (en) * | 2016-12-13 | 2017-03-22 | 杜宪春 | Intelligent electrical control system and control method of screw pile machine |
| CN211874414U (en) * | 2020-02-13 | 2020-11-06 | 徐州工程学院 | Automatic lifting control device of long spiral drilling machine |
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|---|---|---|---|---|
| US4047311A (en) * | 1974-09-23 | 1977-09-13 | Kelley Charles S | Automatic grab bucket with pressure responsive solenoid control |
| JPH05268788A (en) * | 1992-01-23 | 1993-10-15 | Mitsubishi Electric Corp | Variable speed hoist |
| CN201206571Y (en) * | 2008-05-30 | 2009-03-11 | 湖南奥盛特重工科技有限公司 | Complex control system for main hoist and power head of rotary drill rig |
| CN102424336A (en) * | 2011-11-25 | 2012-04-25 | 北京市三一重机有限公司 | Rotary drilling rig and main winch placing down speed control device thereof |
| CN202611677U (en) * | 2012-05-30 | 2012-12-19 | 郑州正弘桩工机械制造有限公司 | Control system of drilling machine and long spiral drilling machine with control system |
| CN104879058A (en) * | 2015-06-04 | 2015-09-02 | 四川吉赛特科技有限公司 | Pneumatic-hydraulic modular drill rig |
| CN106522208A (en) * | 2016-12-13 | 2017-03-22 | 杜宪春 | Intelligent electrical control system and control method of screw pile machine |
| CN211874414U (en) * | 2020-02-13 | 2020-11-06 | 徐州工程学院 | Automatic lifting control device of long spiral drilling machine |
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