Counterweight self-dismounting method of rotary drilling rig

Abstract

According to the counter weight self-disassembling method of the rotary drilling rig, the rotary drilling rig comprises a rotary table, a counter weight, a mast assembly, an auxiliary winch steel wire rope and an auxiliary winch, the counter weight and the mast assembly are both arranged on the rotary table, the auxiliary winch steel wire rope is wound around the mast assembly, one end of the auxiliary winch steel wire rope is connected with the auxiliary winch, and the other end of the auxiliary winch steel wire rope extends out of the mast assembly; the counterweight self-dismounting method of the rotary drilling rig comprises the following steps: S1, carrying out amplitude variation operation on the rotary drilling rig to enable a rope outlet point, extending out of a mast assembly, of an auxiliary winch steel wire rope to be positioned right above a counterweight; s2, lowering an auxiliary winch steel wire rope and connecting the auxiliary winch steel wire rope with a counterweight; s3, the amplitude variation operation is conducted on the rotary drilling rig again, so that the balance weight is moved to the target position; and S4, the auxiliary winch steel wire rope is separated from the balance weight. According to the counter weight self-dismounting method of the rotary drilling rig, the counter weight of the rotary drilling rig can be dismounted without using extra hoisting equipment, so that the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a counterweight self-disassembly method for a rotary drilling rig. Background Art

[0002] The rotary drilling rig is a basic construction equipment with the advantages of strong applicability, high degree of automation, high hole-making efficiency and low environmental pollution. The rotary drilling rig consists of a crawler chassis, a vehicle part, a mast assembly, a drilling system and a hydraulic system. The crawler chassis is used for mobile driving, and the vehicle part and others are used for drilling operations.

[0003] During the construction of the rotary drilling rig, in order to maintain the balance of the body, a counterweight structure is set on the rotating platform of the upper part to move the center of gravity of the rotary drilling rig relatively backward, so that the body of the rotary drilling rig does not tilt forward when the rotary drilling rig is lifted, and to ensure that the body of the rotary drilling rig does not tip over when drilling.

[0004] However, due to traffic control requirements, the counterweight of the rotary drilling rig needs to be removed and transported separately after construction is completed. Usually, the installation and removal of the counterweight requires the use of additional lifting equipment (such as a crane), which is not only time-consuming and labor-intensive but also costly. Summary of the invention

[0005] In view of this, the present invention provides a self-disassembly method for the counterweight of a rotary drilling rig, which can disassemble the counterweight of the rotary drilling rig without using additional lifting equipment, thereby saving costs.

[0006] An embodiment of the present invention provides a method for self-disassembly of a counterweight of a rotary drilling rig, wherein the rotary drilling rig comprises a turntable, a counterweight, a mast assembly, an auxiliary winch wire rope and an auxiliary winch, wherein the counterweight and the mast assembly are both arranged on the turntable, the auxiliary winch wire rope is wound on the mast assembly and one end of the auxiliary winch wire rope is connected to the auxiliary winch, and the other end of the auxiliary winch wire rope extends from the mast assembly, and the method for self-disassembly of the counterweight of the rotary drilling rig comprises: Step S1: performing a luffing operation on the rotary drilling rig so that the exit point of the auxiliary winch wire rope extending from the mast assembly is located directly above the counterweight; Step S2: lowering the auxiliary hoisting wire rope and connecting the auxiliary hoisting wire rope to the counterweight; Step S3: performing a luffing operation on the rotary drilling rig again to move the counterweight to a target position; Step S4: Separating the auxiliary winch wire rope from the counterweight.

[0007] Furthermore, there are multiple counterweights, and steps S1 to S4 are repeated to move each counterweight to a corresponding target position.

[0008] Furthermore, the step S3 includes: using the auxiliary winch to reel in the auxiliary winch wire rope to lift the counterweight, performing a boom operation on the rotary drilling rig so that the rope exit point where the auxiliary winch wire rope extends from the mast assembly is located directly above the target position, and releasing the auxiliary winch wire rope to lower the counterweight to the target position.

[0009] Furthermore, the rotary drilling rig also includes a drill rod and a drilling tool. Before the rotary drilling rig removes the counterweight, the drill rod and the drilling tool are first removed from the rotary drilling rig.

[0010] Furthermore, the rotary drilling rig also includes a luffing mechanism, and the mast assembly is arranged on the luffing mechanism; the luffing operation of the rotary drilling rig includes using the luffing mechanism to adjust the angle between the mast assembly and the horizontal plane and / or the distance between the mast assembly and the turntable.

[0011] Furthermore, the mast assembly includes a mast and an anchor frame arranged on the mast, the anchor frame is provided with a first pulley frame, the first pulley frame is provided with a first pulley and a second pulley at both ends, and the mast is provided with a third pulley; the auxiliary hoisting wire rope is sequentially wound around the third pulley, the second pulley and the first pulley, and the position where the auxiliary hoisting wire rope extends from the first pulley is the rope exit point where the auxiliary hoisting wire rope extends from the mast assembly.

[0012] Furthermore, the rotary drilling rig also includes a main winch wire rope and a main winch. A second pulley frame is also provided on the anchor frame. The main winch wire rope is wound on the second pulley frame. One end of the main winch wire rope is connected to the main winch, and the other end of the main winch wire rope is connected to the drill rod. The drilling tool is connected to one end of the drill rod.

[0013] Furthermore, projections of the first pulley frame and the second pulley frame on a vertical plane in the length direction of the mast are arranged at an acute angle.

[0014] Furthermore, the auxiliary winch is arranged on the turntable.

[0015] Furthermore, the auxiliary winch is located between the luffing mechanism and the counterweight.

[0016] In summary, the counterweight self-disassembly method of the rotary drilling rig of the present invention utilizes the auxiliary winch and the auxiliary winch wire rope of the rotary drilling rig to disassemble the counterweight, thereby achieving the following beneficial effects: 1. No need to use additional lifting equipment, saving the use cost and time cost of deploying lifting equipment.

[0017] 2. It can give full play to the role of the auxiliary winch of the rotary drilling rig, realize multiple uses of one machine, and improve the use value of the rotary drilling rig.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a rotary drilling rig according to a preferred embodiment of the present invention.

[0020] Figure 2 It is a step diagram of a method for self-disassembly of a counterweight of a rotary drilling rig according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0022] Figure 1 It is a structural schematic diagram of a rotary drilling rig according to a preferred embodiment of the present invention. Figure 2 This is a step diagram of the counterweight self-disassembly method of the rotary drilling rig in the preferred embodiment of the present invention. Please refer to Figure 1 and Figure 2 The rotary drilling rig includes a turntable 1, a counterweight 2, a mast assembly 3, an auxiliary hoisting wire rope 4 and an auxiliary hoisting 5. The counterweight 2 and the mast assembly 3 are both arranged on the turntable 1. The auxiliary hoisting wire rope 4 is wound on the mast assembly 3 and one end is connected to the auxiliary hoisting 5. The other end of the auxiliary hoisting wire rope 4 extends from the mast assembly 3. The counterweight self-disassembly method of the rotary drilling rig of this embodiment includes: Step S1: performing a luffing operation on the rotary drilling rig so that the exit point of the auxiliary winch wire rope 4 extending from the mast assembly 3 is located directly above the counterweight 2; Step S2: lowering the auxiliary hoisting wire rope 4 and connecting the auxiliary hoisting wire rope 4 to the counterweight 2; Step S3: performing a luffing operation on the rotary drilling rig again to move the counterweight 2 to the target position; Step S4: Separate the auxiliary hoisting wire rope 4 from the counterweight 2.

[0023] In the counterweight self-disassembly method of the rotary drilling rig of the present invention, the counterweight of the rotary drilling rig can be disassembled without using additional lifting equipment, which saves costs and can give full play to the role of the auxiliary winch of the rotary drilling rig, realizing multiple uses of one machine and improving the use value of the rotary drilling rig.

[0024] In this embodiment, there are multiple counterweights 2, and multiple counterweights 2 are overlapped and arranged at one end of the turntable 1. The above steps S1 to S4 can be repeated to move each counterweight 2 to the corresponding target position. The target position can be the loading part of the transfer vehicle. The counterweight is disassembled and assembled separately, which can reduce the weight of the counterweight moved each time and maintain the stability of the whole machine.

[0025] Furthermore, the above step S3 includes: using the auxiliary winch 5 to reel in the auxiliary winch wire rope 4 to lift the counterweight 2, performing a luffing operation on the rotary drilling rig so that the auxiliary winch wire rope 4 extending from the mast assembly 3 is located directly above the target position, and releasing the auxiliary winch wire rope 4 to lower the counterweight 2 to the target position. The auxiliary winch wire rope 4 and the counterweight 2 can be connected by a clamp or a sling, and can be connected with manual assistance.

[0026] The rotary drilling rig also includes a drill rod 6 and a drilling tool 7. Before the rotary drilling rig disassembles the counterweight 2, the drill rod 6 and the drilling tool 7 are first disassembled from the rotary drilling rig. During the transportation of the rotary drilling rig, the drill rod 6 and the drilling tool 7 can also be transported separately. When the drill rod 6 and the drilling tool 7 need to be transported separately, the drill rod 6 and the drilling tool 7 can be disassembled from the rotary drilling rig first, which can reduce the weight of the rotary drilling rig and make the whole machine more stable when the counterweight 2 is disassembled.

[0027] The rotary drilling rig also includes a luffing mechanism 8, and the mast assembly 3 is arranged on the luffing mechanism 8. The luffing operation of the rotary drilling rig includes adjusting the angle between the mast assembly 3 and the horizontal plane and / or the distance between the mast assembly 3 and the turntable 1 by using the luffing mechanism 8. The luffing mechanism 8 includes, for example, a tripod, a boom, a support rod, a luffing cylinder, etc. When the mast assembly 3 is tilted to a certain angle by the luffing mechanism 8, the exit point of the auxiliary hoisting wire rope 4 extending from the mast assembly 3 can be located directly above the counterweight 2.

[0028] The mast assembly 3 includes a mast 31 and an anchor frame 32 disposed on the mast 31, a first pulley frame 321 is disposed on the anchor frame 32, a first pulley 3211 and a second pulley 3212 are disposed at both ends of the first pulley frame 321, and a third pulley 3213 is disposed on the mast 31; the auxiliary hoisting wire rope 4 is extended from the auxiliary hoisting 5 and is wound around the third pulley 3213, the second pulley 3212 and the first pulley 3211 in sequence, and the position where the auxiliary hoisting wire rope 4 extends from the first pulley 3211 is the exit point of the auxiliary hoisting wire rope 4 extending from the mast assembly 3. The auxiliary hoisting wire rope 4 can be raised or lowered by retracting the auxiliary hoisting 5.

[0029] Furthermore, the rotary drilling rig further includes a main hoisting wire rope 9 and a main hoisting 10, and a second pulley frame 322 is further provided on the anchor frame 32, the main hoisting wire rope 9 is wound on the second pulley frame 322, one end of the main hoisting wire rope 9 is connected to the main hoisting 10, and the other end of the main hoisting wire rope 9 is connected to the drill rod 6, and the drilling tool 7 is connected to one end of the drill rod 6. In this embodiment, a pulley is provided at each end of the second pulley frame 322, and the main hoisting wire rope 9 is wound on two pulleys on the second pulley frame 322 to be distributed on both sides of the mast 31.

[0030] The projections of the first pulley frame 321 and the second pulley frame 322 on the vertical plane in the length direction of the mast 31 are arranged at an acute angle. That is, the first pulley 3211 of the first pulley frame 321 is farther away from the plane where the second pulley frame 322 and the mast 31 are located than the second pulley 3212.

[0031] In this embodiment, the auxiliary winch 5 is arranged on the turntable 1 .

[0032] Furthermore, the auxiliary winch 5 is specifically located between the luffing mechanism 8 and the counterweight 2. A cab 11 is also provided on the turntable 1, the luffing mechanism 8 is located on one side of the cab 11, and the auxiliary winch 5 is arranged between the cab 11 and the counterweight 2. When the auxiliary winch 5 lifts the counterweight 2, the auxiliary winch 5 is arranged between the luffing mechanism 8 and the counterweight 2 to further improve the stability of the whole machine.

[0033] The counterweight self-disassembly method of the rotary drilling rig of the present invention utilizes the auxiliary winch and the auxiliary winch wire rope of the rotary drilling rig to disassemble the counterweight, thereby achieving the following beneficial effects: 1. No need to use additional lifting equipment, saving the use cost and time cost of deploying lifting equipment.

[0034] 2. It can give full play to the role of the auxiliary winch of the rotary drilling rig, realize multiple uses of one machine, and improve the use value of the rotary drilling rig.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for self-disassembly of a counterweight of a rotary drilling rig, the rotary drilling rig comprising a turntable (1), a counterweight (2), a mast assembly (3), an auxiliary hoisting wire rope (4) and an auxiliary hoisting wire rope (5), the counterweight (2) and the mast assembly (3) being both arranged on the turntable (1), the auxiliary hoisting wire rope (4) being wound on the mast assembly (3) and one end of which is connected to the auxiliary hoisting wire rope (5), and the other end of which protrudes from the mast assembly (3), characterized in that: The counterweight self-disassembly method of the rotary drilling rig comprises: Step S1: performing a luffing operation on the rotary drilling rig so that the exit point of the auxiliary winch wire rope (4) extending from the mast assembly (3) is located directly above the counterweight (2); Step S2: lowering the auxiliary hoisting wire rope (4) and connecting the auxiliary hoisting wire rope (4) to the counterweight (2); Step S3: performing a luffing operation on the rotary drilling rig again to move the counterweight (2) to a target position; Step S4: separating the auxiliary hoisting wire rope (4) from the counterweight (2).

2. The counterweight self-disassembly method of a rotary drilling rig according to claim 1, characterized in that: There are multiple counterweights (2), and steps S1 to S4 are repeated to move each counterweight (2) to a corresponding target position.

3. The counterweight self-disassembly method of a rotary drilling rig according to claim 1 or 2, characterized in that: The step S3 comprises: utilizing the auxiliary winch (5) to reel in the auxiliary winch wire rope (4) to lift the counterweight (2), performing a luffing operation on the rotary drilling rig so that the exit point of the auxiliary winch wire rope (4) extending from the mast assembly (3) is located directly above the target position, and releasing the auxiliary winch wire rope (4) to lower the counterweight (2) to the target position.

4. The counterweight self-disassembly method of a rotary drilling rig according to claim 3, characterized in that: The rotary drilling rig further comprises a drill rod (6) and a drilling tool (7). Before the counterweight (2) is disassembled from the rotary drilling rig, the drill rod (6) and the drilling tool (7) are first disassembled from the rotary drilling rig.

5. The counterweight self-disassembly method of a rotary drilling rig according to claim 3, characterized in that: The rotary drilling rig further comprises a luffing mechanism (8), and the mast assembly (3) is arranged on the luffing mechanism (8); performing a luffing operation on the rotary drilling rig comprises using the luffing mechanism (8) to adjust the angle between the mast assembly (3) and a horizontal plane and / or the distance between the mast assembly (3) and the turntable (1).

6. The counterweight self-disassembly method of a rotary drilling rig according to claim 5, characterized in that: The mast assembly (3) comprises a mast (31) and an anchor frame (32) arranged on the mast (31); a first pulley frame (321) is arranged on the anchor frame (32); a first pulley (3211) and a second pulley (3212) are arranged at both ends of the first pulley frame (321); a third pulley (3213) is arranged on the mast (31); the auxiliary hoisting wire rope (4) is wound around the third pulley (3213), the second pulley (3212) and the first pulley (3211) in sequence; the position where the auxiliary hoisting wire rope (4) extends from the first pulley (3211) is the rope exit point where the auxiliary hoisting wire rope (4) extends from the mast assembly (3).

7. The counterweight self-disassembly method of a rotary drilling rig according to claim 6, characterized in that: The rotary drilling rig further comprises a main hoisting wire rope (9) and a main hoisting (10); a second pulley frame (322) is further provided on the anchor frame (32); the main hoisting wire rope (9) is wound on the second pulley frame (322); one end of the main hoisting wire rope (9) is connected to the main hoisting (10); the other end of the main hoisting wire rope (9) is connected to the drill rod (6); and the drilling tool (7) is connected to one end of the drill rod (6).

8. The counterweight self-disassembly method of a rotary drilling rig according to claim 7, characterized in that: Projections of the first pulley frame (321) and the second pulley frame (322) on a vertical plane in the length direction of the mast (31) are arranged at an acute angle.

9. The counterweight self-disassembly method of a rotary drilling rig according to claim 5, characterized in that: The auxiliary winch (5) is arranged on the turntable (1).

10. The counterweight self-disassembly method of a rotary drilling rig according to claim 9, characterized in that: The auxiliary winch (5) is located between the luffing mechanism (8) and the counterweight (2).

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