Double-winch linkage control system of long spiral drilling machine and control method of double-winch linkage control system

Abstract

The invention discloses a double-winch linkage control system of a long spiral drilling machine and a control method of the double-winch linkage control system. The double-winch linkage control system comprises a pilot control oil way and a main control oil way. The pilot control oil way comprises a gear pump, a multi-way valve, a first handle, a second handle, a pressure sensor and an electromagnetic directional valve. The main control oil way comprises a hydraulic oil tank, a first plunger pump, an engine, a second plunger pump, a multi-way valve, a main coil floating electromagnetic valve, a main coil motor, a pressurization floating electromagnetic valve and a pressurization winch motor. When the main winch lifts, the pressurizing winch is in a floating state and acts along with the main winch, and the lifting rope speed V1 of the main winch is the same as the floating rope speed V2 of the pressurizing winch. When the pressurizing winch is lowered, the main winch is in a floating state and acts along with the pressurizing winch. The floating rope speed V3 of the main winch is the same as the lowering rope speed V4 of the pressurizing winch, the floating rope speed V3 of the main winch can be achieved by adjusting the main winch floating electromagnetic valve to control the current so as to adjust the opening of the valve element, and the purpose of controlling the floating rope speed V3 of the main winch is achieved.

Description

Technical Field

[0001] The invention belongs to the field of engineering machinery, and in particular relates to a double-winch linkage control system of a long spiral drilling rig and a control method thereof. Background Art

[0002] Long spiral drilling rigs can be used for rapid drilling operations in soil layers and are suitable for concrete bored piles in building foundation projects. They have the advantages of rapid drilling and pouring while lifting the drill.

[0003] At present, the long spiral drilling rig drives the power head to move up and down along the drill mast, and the same handle is used to control the main reel lifting and pressurized lowering. At present, there are situations such as excessive main reel lifting pressure and loose wire rope due to speed mismatch. Therefore, it is necessary to match the movement speed of the main winch and the pressurized winch, so that when the long spiral is lifted, the main reel lifting speed is controlled to meet the pressurized floating speed, and the main reel floating speed is adjusted to meet the pressurized lowering speed during the lowering sequence to prevent the wire rope from loosening due to speed mismatch. Summary of the invention

[0004] In view of the above problems, the present invention aims to solve the problem of loose wire rope caused by the asynchronous speed when the main reel and the pressure winch of the long spiral drilling machine are linked.

[0005] The invention discloses a double winch linkage control system for a long spiral drilling machine, comprising a pilot control oil circuit and a main control oil circuit; the pilot control oil circuit comprises a gear pump, a multi-way valve, a handle 1, a handle 2, a pressure sensor and an electromagnetic reversing valve; the gear pump connects the handle 1 and the handle 2; the handle 1 and the handle 2 are respectively connected to the multi-way valve and the electromagnetic reversing valve; the multi-way valve is connected to the electromagnetic reversing valve, and the handle 1 and the handle 2 are both connected to the pressure sensor; The main control oil circuit includes a hydraulic oil tank, a plunger pump 1, an engine, a plunger pump 2, a multi-way valve, a main roll floating solenoid valve, a main roll motor, a pressurized floating solenoid valve and a pressurized winch motor; the engine is connected to the plunger pump 2, the plunger pump 2 is connected to the plunger pump 1, the plunger pump 1 is connected to the gear pump, the plunger pump 2, the plunger pump 1 and the gear pump are all connected to the hydraulic oil tank; the plunger pump 2 is connected to the main roll floating solenoid valve through the multi-way valve, and the main roll floating solenoid valve is connected to the main roll motor; the plunger pump 1 is connected to the pressurized floating solenoid valve through the multi-way valve, and the pressurized floating solenoid valve is connected to the pressurized winch motor; the multi-way valve is connected to the hydraulic oil tank.

[0006] Furthermore, the plunger pump 1 and the plunger pump 2 are both electronically controlled pumps.

[0007] Furthermore, the main reel floating solenoid valve is a proportionally controlled reversing valve, which is used to adjust the floating speed of the main reel motor when it follows the lowering of the pressurized winch by controlling the value of the input current.

[0008] Accordingly, the control method of the above-mentioned long spiral drilling rig double winch linkage control system is: In rotary drilling mode, the main winch and pressure winch need to act independently. Operating handle one changes the direction of the multi-way valve, and plunger pump one supplies oil to activate the pressure winch motor; operating handle two changes the direction of the multi-way valve, and plunger pump two supplies oil to activate the main winch motor.

[0009] Furthermore, in the long spiral mode, handle two needs to control the main reel lifting and pressurized lowering actions, and handle one does not participate in the action control; the pressure sensor detects the pressure signal output by handle two, and the controller outputs the corresponding control current according to the identified pressure signal, thereby controlling the main pump displacement and providing the required flow for the motor; in the long spiral function, the solenoid valve reversing valve is energized, and the long spiral power head is raised and lowered by operating handle two; handle two is lifted to control the main reel lifting, at which time the pressurized floating solenoid valve is energized, and the pressurized motor is in a floating state, following the movement of the main winch; handle two is pressed down to control the pressurized lowering, at which time the main reel floating solenoid valve is energized, and the main reel motor is in a floating state, following the movement of the pressurized winch.

[0010] Furthermore, if it is detected during the lowering process that the pin shaft weighing weight is less than the set target value, the controller reduces the control current of the pressurized floating solenoid valve, the opening of the main reel floating solenoid valve is reduced, and the floating speed is reduced to avoid over-releasing of the wire rope due to excessive main reel speed.

[0011] Furthermore, when the wire rope is over-released, that is, when the weighing sensor detects that the weighing weight is less than the set weight, a smaller control current is given to the plunger pump to maintain the minimum displacement output of the pump, thereby achieving automatic tightening of the wire rope.

[0012] Furthermore, the target value of the weight is set to 3 tons.

[0013] The present invention has at least the following beneficial effects: The long spiral drilling rig double winch linkage control system and control method of the present invention, when the main winch is lifted, the pressure winch is in a floating state, following the main winch action, and the main winch lifting rope speed V1 is the same as the pressure winch floating rope speed V2. When the pressure winch is lowered, the main winch is in a floating state, following the pressure winch action. The main winch floating rope speed V3 is the same as the pressure winch lowering rope speed V4. The main winch floating rope speed V3 can be achieved by adjusting the main reel floating solenoid valve control current and then adjusting the valve core opening, so as to achieve the purpose of controlling the main reel floating rope speed V3. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the principle diagram of the hydraulic system of the present invention; In the figure: 1. Hydraulic oil tank, 2. Plunger pump 1, 3. Engine, 4. Plunger pump 2, 6. Multi-way valve, 7. Handle 1, 8. Handle 2, 9. Pressure sensor, 10. Solenoid reversing valve, 11. Main reel floating solenoid valve, 12. Main reel motor, 13. Pressurized floating solenoid valve, 14. Pressurized winch motor. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0016] Embodiment 1, as Figure 1 As shown, this embodiment provides a long spiral drilling machine double winch linkage control system, including a pilot control oil circuit and a main control oil circuit; the pilot control oil circuit includes a gear pump 5, a multi-way valve 6, a handle 1 7, a handle 2 8, a pressure sensor 9 and an electromagnetic reversing valve 10; the gear pump 5 is connected to the handle 1 7 and the handle 2 8; the handle 1 7 and the handle 2 8 are respectively connected to the multi-way valve 6 and the electromagnetic reversing valve 10; the multi-way valve 6 is connected to the electromagnetic reversing valve 10, and the handle 1 7 and the handle 2 8 are both connected to the pressure sensor 9; The main control oil circuit includes a hydraulic oil tank 1, a plunger pump 2, an engine 3, a plunger pump 2, a multi-way valve 6, a main roll floating solenoid valve 11, a main roll motor 12, a pressurized floating solenoid valve 13 and a pressurized winch motor 14; the engine 3 is connected to the plunger pump 24, the plunger pump 24 is connected to the plunger pump 2, the plunger pump 2 is connected to the gear pump 5, the plunger pump 24, the plunger pump 2 and the gear pump 5 are all connected to the hydraulic oil tank 1; the plunger pump 24 is connected to the main roll floating solenoid valve 11 through the multi-way valve 6, and the main roll floating solenoid valve 11 is connected to the main roll motor 12; the plunger pump 2 is connected to the pressurized floating solenoid valve 13 through the multi-way valve 6, and the pressurized floating solenoid valve 13 is connected to the pressurized winch motor 14; the multi-way valve 6 is connected to the hydraulic oil tank 1.

[0017] Embodiment 2, this embodiment provides a control method for the double winch linkage control system of the long spiral drilling rig described in Embodiment 1, comprising the following steps: In rotary drilling mode, the main winch and pressure winch need to act independently, the operating handle 17 makes the multi-way valve reversing 6, and the plunger pump 12 supplies oil to make the pressure winch motor act. The operating handle 28 makes the multi-way valve 6 reversing, and the plunger pump 24 supplies oil to make the main winch motor act.

[0018] In the long spiral mode, handle 28 needs to control the main reel lifting and pressurized lowering action, and handle 17 does not participate in the action control. Plunger pump 12 and plunger pump 24 are electronically controlled pumps. The pressure sensor 9 detects the pressure signal output by the handle. The controller outputs the corresponding control current according to the identified pressure signal, and then controls the displacement of the main pump to provide the required flow for the motor. In the long spiral function, the solenoid valve reversing valve 10 is energized, and the rise and fall of the long spiral power head are realized by operating handle 28. The handle 28 is lifted to control the main reel lifting. At this time, the pressurized floating solenoid valve 13 is energized, and the pressurized motor 14 is in a floating state and follows the main winch. The handle 28 is pressed down to control the pressurized lowering. At this time, the main reel floating solenoid valve 11 is energized, and the main reel motor 12 is in a floating state and follows the pressurized winch. If the pin shaft weighing weight is detected to be less than the set target value of 3 tons during the lowering process, the controller reduces the floating solenoid valve control current, the main reel floating solenoid valve opening is reduced, and the floating speed is reduced to avoid excessive release of the wire rope caused by the main reel speed being too fast.

[0019] The solenoid valve 11 is a proportionally controlled reversing valve, which can adjust the floating speed of the main winding motor 12 when following the lowering of the pressurized winch by controlling the value of the input current, so as to avoid over-releasing of the main winding wire rope.

[0020] When the wire rope is over-released, that is, when the weighing sensor detects that the weighing weight does not meet 3 tons, a 200mA control current is given to the plunger pump to maintain the minimum displacement output of the pump, so that the wire rope is automatically tightened.

[0021] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. And in the drawings of the present invention, the filling pattern is only to distinguish the layers, without any other limitation.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double winch linkage control system for a long spiral drilling rig, characterized in that: It comprises a pilot control oil circuit and a main control oil circuit; the pilot control oil circuit comprises a gear pump (5), a multi-way valve (6), a handle 1 (7), a handle 2 (8), a pressure sensor (9) and an electromagnetic reversing valve (10); the gear pump (5) is connected to the handle 1 (7) and the handle 2 (8); the handle 1 (7) and the handle 2 (8) are respectively connected to the multi-way valve (6) and the electromagnetic reversing valve (10); the multi-way valve (6) is connected to the electromagnetic reversing valve (10); the handle 1 (7) and the handle 2 (8) are both connected to the pressure sensor (9); The main control oil circuit comprises a hydraulic oil tank (1), a plunger pump 1 (2), an engine (3), a plunger pump 2 (4), a multi-way valve (6), a main reel floating solenoid valve (11), a main reel motor (12), a pressurized floating solenoid valve (13) and a pressurized hoisting motor (14); the engine (3) is connected to the plunger pump 2 (4), the plunger pump 2 (4) is connected to the plunger pump 1 (2), the plunger pump 1 (2) is connected to the gear pump (5), the plunger pump 2 (4), the plunger pump 1 (2) and the gear pump (5) are all connected to the hydraulic oil tank (1); the plunger pump 2 (4) is connected to the main reel floating solenoid valve (11) through the multi-way valve (6), the main reel floating solenoid valve (11) is connected to the main reel motor (12); the plunger pump 1 (2) is connected to the pressurized floating solenoid valve (13) through the multi-way valve (6), the pressurized floating solenoid valve (13) is connected to the pressurized hoisting motor (14); the multi-way valve (6) is connected to the hydraulic oil tank (1).

2. The double winch linkage control system for a long spiral drilling rig according to claim 1 is characterized in that: The plunger pump 1 (2) and the plunger pump 2 (4) are both electrically controlled pumps.

3. The double winch linkage control system for a long spiral drilling rig according to claim 1 is characterized in that: The main reel floating solenoid valve (11) is a proportionally controlled reversing valve, which is used to adjust the floating speed of the main reel motor (12) when it follows the lowering of the pressurized winch by controlling the value of the input current.

4. The control method of the double winch linkage control system of the long spiral drilling rig according to claim 1 is characterized in that: In the rotary drilling mode, the main winch and the pressure winch need to be operated independently. The operating handle 1 (7) changes the direction of the multi-way valve (6), and the plunger pump 1 (2) supplies oil to activate the pressure winch motor (14); the operating handle 2 (8) changes the direction of the multi-way valve (6), and the plunger pump 2 (4) supplies oil to activate the main winch motor (12).

5. The control method of the double winch linkage control system of the long spiral drilling rig according to claim 1 is characterized in that: In the long spiral mode, handle 2 (8) needs to control the main reel lifting and pressurized lowering actions, and handle 1 (7) does not participate in the action control; the pressure sensor (9) detects the pressure signal output by handle 2 (8), and the controller outputs the corresponding control current according to the identified pressure signal, thereby controlling the displacement of the main pump to provide the required flow for the motor; in the long spiral function, the solenoid valve reversing valve (10) is energized, and the long spiral power head is raised and lowered by operating handle 2 (8); handle 2 (8) is lifted to control the main reel lifting, at which time the pressurized floating solenoid valve (13) is energized, and the pressurized motor (14) is in a floating state and follows the movement of the main winch; handle 2 (8) is pressed down to control the pressurized lowering, at which time the main reel floating solenoid valve (11) is energized, and the main reel motor (12) is in a floating state and follows the movement of the pressurized winch.

6. The control method of the double winch linkage control system of the long spiral drilling rig according to claim 5 is characterized in that: If the pin shaft weighing weight is detected to be less than the set target value during the lowering process, the controller reduces the control current of the pressurized floating solenoid valve (13), the opening of the main reel floating solenoid valve (11) is reduced, and the floating speed is reduced to avoid over-releasing of the wire rope due to excessive main reel speed.

7. The control method of the double winch linkage control system of the long spiral drilling rig according to claim 6 is characterized in that: When the wire rope is over-released, that is, when the weighing sensor detects that the weighing weight is less than the set weight, a smaller control current is given to the plunger pump 2 (4) to maintain the minimum displacement output of the pump, thereby achieving automatic tensioning of the wire rope.

8. The control method of the double winch linkage control system of the long spiral drilling rig according to claim 7, characterized in that: The target weight is set at 3 tons.

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