Multi-stage drill rod disassembly device and disassembly method for column drilling rig

Abstract

The present invention discloses a multi-stage drill rod disassembly device for a column-type drilling rig, comprising a rod disassembly sleeve and a bearing sleeve; the rod disassembly sleeve is cylindrical; one end of the rod disassembly sleeve is provided with a drill rod clamping cavity, and the other end is provided with a motor power head installation cavity; a notch is provided on the outer wall of one end of the rod disassembly sleeve; the notch is located on the side where the drill rod clamping cavity is located; the notch is annular and is coaxially arranged with the rod disassembly sleeve; a receiving groove is provided in the notch; a steel ball is installed in the receiving groove; the inner end of the steel ball extends into the drill rod clamping cavity. The multi-stage drill rod disassembly device of the present invention replaces the traditional manual disassembly, and the drill rod disassembly is labor-saving and convenient, which greatly reduces the labor of workers and saves disassembly time.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine drilling equipment, in particular to a multi-stage drill rod disassembly device and a disassembly method for a column-type drilling rig. Background Art

[0002] At present, the main types of drilling equipment used in coal mines are coal-electricity drilling rigs, pneumatic drilling rigs, hydraulic drilling rigs, etc. In the flammable and explosive environment of coal mines, the State Administration of Work Safety has strictly restricted the use of live equipment, and the elimination of coal-electricity drilling rigs is inevitable; pneumatic drilling rigs are also being gradually eliminated due to their high noise, low torque, low efficiency, short life and other shortcomings; at this stage, the large and medium-sized drilling rigs used in coal mines are mainly hydraulic drilling rigs, which have advantages such as high torque, low noise, reliable operation, and long life that other types of drilling rigs cannot match.

[0003] Due to the large size of the equipment and the deep drilling, the drill rods of the column type emulsion drilling rig are composed of multiple sections. After the drilling is completed, these drill rods need to be disassembled from the column type emulsion drilling rig. At present, workers all use manual disassembly. Due to the large size and weight, the disassembly of the drill rod not only requires a lot of physical labor, but also consumes a lot of time. Based on this, how to design a column type drilling rig multi-stage drill rod disassembly device and disassembly method is the technical problem to be solved by the present invention. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-stage drill rod disassembly device for a column-type drilling rig and a disassembly method thereof.

[0005] The present invention solves the above technical problems through the following technical means:

[0006] A multi-stage drill rod disassembly device for a column-type drilling rig comprises a rod disassembly sleeve and a bearing sleeve; the rod disassembly sleeve is cylindrical; a drill rod clamping cavity is provided at one end of the rod disassembly sleeve, and a motor power head installation cavity is provided at the other end; a notch is provided on the outer wall of one end of the rod disassembly sleeve; the notch is located on the side where the drill rod clamping cavity is located; the notch is annular and is coaxially arranged with the rod disassembly sleeve; a receiving groove is provided in the notch; a steel ball is installed in the receiving groove; the inner end of the steel ball extends into the drill rod clamping cavity; a mounting opening is provided on the side wall of the rod disassembly sleeve; the mounting opening is located on the side where the motor power head installation cavity is located; the bearing sleeve is slidably sleeved on the outside of the rod disassembly sleeve and is located at the end where the notch is located; the inner wall of the bearing sleeve protrudes to form an annular tightening portion; the tightening portion is coaxially sleeved on the outside of the notch.

[0007] Preferably, in the multi-stage drill rod disassembly device of the column-type drilling rig, a first stop iron is installed at one end of the rod disassembly sleeve; the first stop iron is arranged perpendicular to the rod disassembly sleeve, and a stop ring cooperating with the first stop iron is arranged on the inner wall of one end of the bearing sleeve close to the first stop iron.

[0008] Preferably, in the multi-stage drill rod disassembly device for a column-type drilling rig, a second stopper is installed at the installation opening.

[0009] Preferably, in the multi-stage drill rod disassembly device for a column-type drilling rig, the first stop iron and the second stop iron are both fixed to the rod disassembly sleeve by screws.

[0010] The method for disassembling multi-stage drill rods of a column drilling rig comprises the following steps:

[0011] The first drill rod is fixed to limit its rotation, the motor is started and rotated in the opposite direction, the first drill rod is disengaged from the power head, the rod unloader of the present invention is installed on the motor power head through the motor power head installation cavity, the installation port and the linkage clamping block, the end of the first drill rod is extended into the drill rod clamping cavity, the bearing sleeve is pushed to make it move axially along the power head, so that the tightening part presses the steel ball, and the steel ball is stuck in the flat groove of the drill rod and cannot move radially. At this time, the first drill rod is reconnected to the power head through the rod unloader of the present invention, the second drill rod is fixed to limit its rotation, the motor rotates in the opposite direction, the first drill rod is disengaged from the second drill rod, and the first drill rod is completely disassembled, and all drill rods can be disassembled in turn.

[0012] The advantages of the present invention are: the multi-stage drill rod disassembly device of the present invention replaces the traditional manual disassembly, the drill rod disassembly is labor-saving and convenient, the labor load of workers is greatly reduced, and the disassembly time is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal structure of the rod unloader of the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The multi-stage drill rod disassembly device of a column-type drilling rig comprises a rod disassembly sleeve 1 and a bearing sleeve 2; the rod disassembly sleeve 1 is cylindrical; one end of the rod disassembly sleeve 1 is provided with a drill rod clamping cavity 101, and the other end is provided with a motor power head installation cavity 12; a notch 11 is provided on the outer wall of one end of the rod disassembly sleeve 1; the notch 11 is located on the side where the drill rod clamping cavity 101 is located; the notch 11 is annular and is coaxially arranged with the rod disassembly sleeve 1; a receiving groove 111 is provided in the notch 11; A steel ball 112 is installed in the receiving groove 111; the inner end of the steel ball 112 extends into the drill rod clamping cavity 101; a mounting opening 13 is provided on the side wall of the rod unloading sleeve 1; the mounting opening 13 is located on the side where the motor power head mounting cavity 12 is located; the bearing sleeve 2 is slidably sleeved on the outside of the rod unloading sleeve 1 and is located at the end where the notch 11 is located; the inner wall of the bearing sleeve 2 protrudes to form an annular tightening portion 21; the tightening portion 21 is coaxially sleeved on the outside of the notch 11;

[0017] The diameter of the drill rod clamping cavity 101 is designed to be the same as or slightly larger than the diameter of the drill rod, ensuring that the drill rod can extend into the drill rod clamping cavity 101; the number of steel balls 112 is designed to be the same as the number of drill rod flat grooves, and the position corresponds to the position of the drill rod flat grooves, so that the steel balls 112 are clamped in the drill rod flat grooves one by one to limit the rotation of the drill rod; in order to ensure that the tightening portion 21 has a pressing effect on the steel balls 112, the diameter of the steel balls 2 is greater than the side wall thickness of the rod unloading sleeve 1 at the notch 11, and the inner diameter of the tightening portion 21 is equal to or slightly larger than the outer diameter of the rod unloading sleeve 1 at the notch 11; the inner diameter of the bearing sleeve 2 is greater than the outer diameter of the rod unloading sleeve 1, and the bearing sleeve 2 is sleeved on the outside of the rod unloading sleeve 1, that is, the bearing sleeve 2 can slide axially relative to the rod unloading sleeve 1; the diameter of the motor power head mounting cavity 12 is equal to or slightly larger than the outer diameter of the motor power head; a linkage clamping block 3 is provided on the motor power head, and the linkage clamping block 3 is clamped in the mounting port, so that the motor power head drives the device to rotate;

[0018] The multi-stage drill rod disassembly device of the present invention replaces the traditional manual disassembly, and the drill rod disassembly is labor-saving and convenient, which greatly reduces the labor of workers and saves disassembly time.

[0019] Preferably, in order to prevent the bearing sleeve 2 from slipping out of the notch 11, a first stop iron 14 is installed at one end of the unloading rod sleeve 1; the first stop iron 14 is arranged perpendicular to the unloading rod sleeve 1, and a retaining ring 22 cooperating with the first stop iron is arranged on the inner wall of one end of the bearing sleeve 2 close to the first stop iron 14.

[0020] Preferably, in order to ensure that the motor power head and the unloading rod sleeve 1 are firmly connected and do not separate, a second stopper 15 is installed at the installation opening 13 .

[0021] Preferably, in order to facilitate the installation of the first stop iron 14 and the second stop iron 15 , the first stop iron 14 and the second stop iron 15 are both fixed to the unloading rod sleeve 1 by screws 16 .

[0022] The method for disassembling multi-stage drill rods of a column drilling rig comprises the following steps:

[0023] The first drill rod is fixed to limit its rotation, the motor is started and rotated in the opposite direction, the first drill rod is disengaged from the power head, the rod unloader of the present invention is installed on the motor power head through the motor power head mounting cavity 12, the mounting port 13 and the linkage block 3, the end of the first drill rod is extended into the drill rod clamping cavity 101, the bearing sleeve 2 is pushed to make it move axially along the power head, so that the tightening part 21 presses the steel ball 112, the steel ball 112 is stuck in the flat groove of the drill rod and cannot move radially, at this time, the first drill rod is reconnected to the power head through the rod unloader of the present invention, the second drill rod is fixed to limit its rotation, the motor rotates in the opposite direction, the first drill rod is disengaged from the second drill rod, the first drill rod is completely disassembled, and all the drill rods can be disassembled in turn.

[0024] It should be noted that, in this article, if there are first and second, etc., relational terms 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage drill rod disassembly device for a column drilling rig, characterized in that: The invention comprises a rod unloading sleeve (1) and a bearing sleeve (2); the rod unloading sleeve (1) is cylindrical; a drill rod clamping cavity (101) is provided at one end of the rod unloading sleeve (1), and a motor power head installation cavity (12) is provided at the other end; a notch (11) is provided on the outer wall of one end of the rod unloading sleeve (1); the notch (11) is located on the side where the drill rod clamping cavity (101) is located; the notch (11) is annular and is coaxially arranged with the rod unloading sleeve (1); a receiving groove (111) is provided in the notch (11); a steel ball (112) is installed in the receiving groove (111); the inner end of the steel ball (112) extends into the drill rod clamping cavity (101), the number of the steel balls (112) is designed to be the same as the number of the drill rod flat grooves, and the positions of the steel balls (112) correspond to the positions of the drill rod flat grooves; The side wall of the unloading rod sleeve (1) is provided with a mounting opening (13); the mounting opening (13) is located on the side where the motor power head mounting cavity (12) is located; the bearing sleeve (2) is slidably sleeved on the outside of the unloading rod sleeve (1) and is located at the end where the notch (11) is located; the inner wall of the bearing sleeve (2) protrudes to form an annular tightening portion (21); the tightening portion (21) is coaxially sleeved on the outside of the notch (11); A first stopper (14) is installed at one end of the unloading rod sleeve (1); the first stopper (14) is arranged perpendicular to the unloading rod sleeve (1); and a stopper ring (22) cooperating with the first stopper is arranged on the inner wall of one end of the bearing sleeve (2) close to the first stopper (14); A second stopper (15) is installed at the installation opening (13); The first stop iron (14) and the second stop iron (15) are both fixed to the rod removal sleeve (1) by means of screws (16).

2. A method for disassembling a multi-stage drill pipe disassembly device for a column drilling rig according to claim 1, comprising the following steps: The first drill rod is fixed to restrict its rotation, the motor is started and rotated in the reverse direction, the first drill rod is disengaged from the power head, the multi-stage drill rod disassembly device is mounted on the motor power head through the motor power head mounting cavity (12), the mounting port (13) and the linkage clamping block (3), the end of the first drill rod is inserted into the drill rod clamping cavity (101), the bearing sleeve (2) is pushed to make it move along the axial direction of the power head, so that the pressing part (21) presses the steel ball (112), the steel ball (112) is stuck in the flat groove of the drill rod and cannot move radially, at this time, the first drill rod is reconnected with the power head through the multi-stage drill rod disassembly device, the second drill rod is fixed to restrict its rotation, the motor rotates in the reverse direction, the first drill rod is disengaged from the second drill rod, the first drill rod is completely disassembled, and all the drill rods can be disassembled in sequence.

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