Positioning device of geological drilling hole bottom cutting equipment

Abstract

The utility model relates to a positioning device of geological drilling hole bottom cutting equipment, and belongs to the technical field of geological drilling. According to the technical scheme, a fixed driving motor is connected with a forward and reverse lead screw mechanism through a rotating device, the forward and reverse lead screw mechanism is a transmission pair formed by a forward and reverse lead screw, a forward lead screw nut and a reverse lead screw nut, the forward lead screw nut is provided with a second pushing sliding block, the reverse lead screw nut is provided with a first pushing sliding block, and an anchoring block is arranged between the first pushing sliding block and the second pushing sliding block; the forward and reverse lead screw rotates to drive the forward lead screw nut and the reverse lead screw nut to move face to face or relative to each other and drive the first pushing sliding block and the second pushing sliding block to move face to face or relative to each other, and therefore the anchoring block located between the first pushing sliding block and the second pushing sliding block can stretch out and retract. The forward and reverse lead screw mechanism is combined with the sliding block and the anchoring block, so that geological drilling hole bottom cutting equipment is firmly positioned in a drill rod, cutting is stable, and the operation efficiency of cutting off the drill rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a positioning device of geological drilling hole bottom cutting equipment belongs to geological drilling technical field. BACKGROUND

[0002] In geological drilling, when the drill pipe or casing is stuck in the hole and cannot be pulled out, a geological drilling hole bottom cutting equipment is used to cut the drill pipe or casing in the hole, and the remaining pipe material is pulled out to reduce losses. The existing geological drilling hole bottom cutting equipment has many problems in positioning in the drill pipe, such as: Chinese utility model patent application 202310787971.4 entitled "a hole bottom power cutting device for drill pipe in a hole in a wireline coring accident", which uses an inflatable rubber ring for fixing and positioning. The positioning is not firm, which causes unstable cutting and affects the operation efficiency of cutting the drill pipe. SUMMARY

[0003] The utility model aims to provide a positioning device of geological drilling hole bottom cutting equipment, which is firm in positioning in the drill pipe, stable in cutting, and improves the operation efficiency of cutting the drill pipe, solving the above technical problems in the background art.

[0004] The technical scheme of the utility model is:

[0005] A positioning device of geological drilling hole bottom cutting equipment, comprising a fixed drive motor, a rotating device, a forward and reverse screw mechanism, a push block one, an anchor block and a push block two; the fixed drive motor is connected with the forward and reverse screw mechanism through the rotating device, the forward and reverse screw mechanism is a transmission pair formed by a forward and reverse screw, a forward screw nut and a reverse screw nut, the push block two is provided on the forward screw nut, the push block one is provided on the reverse screw nut, the anchor block is arranged between the push block one and the push block two, and the anchor block is in sliding contact with the push block one and the push block two through the inclined dovetail groove structure; the forward and reverse screw drives the forward screw nut and the reverse screw nut to move towards or away from each other through rotation, and drives the push block one and the push block two to move towards or away from each other, so as to realize the extension and recovery of the anchor block between the push block one and the push block two.

[0006] Further, the forward and reverse screw is a forward and reverse trapezoidal screw.

[0007] Further, the push block one and the push block two are hollow shaft structures, and the forward and reverse screw passes through them; the inclined dovetail groove structure is a dovetail groove structure arranged on the inclined surface, and the inclined surface of the end of the push block one and the push block two is provided with a dovetail groove, which is matched with the dovetail on the upper and lower inclined surfaces of the anchor block.

[0008] Further, the anchor block outer side is provided with a rhombus anti-skid block, which contacts with the drill pipe wall and plays a good fixing role.

[0009] Further, the positive screw nut and the push block one and the reverse screw nut and the push block two are connected together by screws.

[0010] Further, the fixed drive motor is externally provided with a drive motor shell.

[0011] Further, the number of the anchor blocks is four, which are evenly distributed around the positive and reverse screw rods; the positive and reverse screw rod mechanism is provided with a fixed shell, which is a hollow pipe structure, and four square long grooves are arranged on the pipe wall, and the four anchor blocks are arranged in the square long grooves.

[0012] When the positive and reverse screw rods rotate clockwise, the positive and reverse screw nuts are driven to move inward, the push block one and the push block two are driven to move inward, the corresponding inclined dovetail grooves drive the anchor blocks to move outward, the anchor blocks are in contact with the drill pipe wall and are tensioned, and the fixing of the cutting device is realized.

[0013] When the positive and reverse screw rods rotate counterclockwise, the positive and reverse screw nuts are driven to move outward, the push block one and the push block two are driven to move outward, the corresponding inclined dovetail groove structures drive the anchor blocks to move inward, the anchor blocks are separated from the drill pipe wall and are recovered into the fixed shell.

[0014] The utility model has the advantages that the positive and reverse screw rod mechanism, the sliding block and the anchor block are combined, the geological drilling hole bottom cutting equipment is firmly positioned in the drill pipe, cutting is stable, and the operation efficiency of cutting the drill pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the anchor block anchoring before state schematic drawing of the utility model embodiment;

[0016] Figure 2 It is the anchor block anchoring after state schematic drawing of the utility model embodiment;

[0017] Figure 3 It is the anchor block schematic drawing of the utility model embodiment;

[0018] Figure 4 It is the geological drilling hole bottom cutting equipment structure schematic drawing of the utility model embodiment;

[0019] In the figure: hole bottom signal transmission module 1, the utility model 2, rotating module 3, hole bottom cutting module 4, fixed drive motor 5, rotating device 6, reverse screw nut 7, positive and negative screw 8, push slider one 9, anchor block 10, push slider two 11, positive screw nut 12, fixed shell 13, drive motor shell 14, drill rod 15, dovetail 25. DETAILED DESCRIPTION

[0020] The utility model is further described by examples in combination with the drawings.

[0021] Referring to the drawings Figure 1 And 2 The embodiment provides a positioning device of geological drilling hole bottom cutting equipment, which comprises a fixed drive motor 5, a rotating device 6, a positive and negative screw mechanism, a push slider one 9, an anchor block 10 and a push slider two 11; the fixed drive motor 5 is connected with the positive and negative screw mechanism through the rotating device 6; the positive and negative screw mechanism is a transmission pair formed by a positive and negative screw 8, a positive screw nut 12 and a reverse screw nut 7; the positive screw nut 12 is provided with the push slider two 11; the reverse screw nut 7 is provided with the push slider one 9; the anchor block 10 is arranged between the push slider one 9 and the push slider two 11; the anchor block 10 is in sliding contact with the push slider one 9 and the push slider two 11 through inclined surface dovetail groove structures respectively; the positive and negative screw 8 drives the positive screw nut and the reverse screw nut to move towards each other or away from each other through rotation, and drives the push slider one 9 and the push slider two 11 to move towards each other or away from each other, so that the anchor block between the push slider one 9 and the push slider two 11 is extended or recovered.

[0022] Preferably, the positive and negative screw 8 is a positive and negative trapezoidal screw.

[0023] Referring to the drawings Figures 1-3 The push slider one 9 and the push slider two 11 are hollow shaft structures, and the positive and negative screw 8 passes through the hollow shaft structures; the inclined surface dovetail groove structure is a dovetail groove structure arranged on an inclined surface; the inclined surface of the end of the push slider one 9 and the push slider two 11 is provided with a dovetail groove, which is matched with a dovetail 25 on the upper and lower inclined surfaces of the anchor block 10 respectively.

[0024] Preferably, a rhombic anti-skid block is arranged on the outer side of the anchor block 10, which can be in contact with the pipe wall of the drill rod 15 and play a good fixing role.

[0025] In the embodiment, the positive screw nut and the push slider one, and the reverse screw nut and the push slider two are connected together by screws.

[0026] In the embodiment, the fixed drive motor 5 is externally provided with a drive motor shell 14.

[0027] In the embodiment, the number of the anchor blocks 10 is four, which are evenly distributed around the lead-screw 8; the lead-screw mechanism is provided with a fixed shell 13, which is a hollow tube structure, and four square long grooves are provided on the tube wall, and the four anchor blocks are arranged in the square long grooves respectively.

[0028] The use process of the utility model:

[0029] When the lead-screw rotates clockwise, the lead-screw nut is driven to move inward, the sliding block one and the sliding block two are driven to move inward, the corresponding inclined dovetail groove pushes the anchor block 10 outward, the anchor block 10 is in contact with the pipe wall of the drill pipe 15 and is tensioned, and the fixing of the cutting device is realized. Because the trapezoidal screw has good self-locking characteristics, the fixing of the fixing device can be realized when the motor is turned off.

[0030] When the lead-screw rotates counterclockwise, the lead-screw nut is driven to move outward, the sliding block one and the sliding block two are driven to move outward, the corresponding inclined dovetail groove structure pulls the anchor block 10 inward, the anchor block 10 is separated from the pipe wall of the drill pipe 15, and is recovered into the fixed shell. The displacement control signal of the fixed driving motor can control the anchor block 10 to return to the original position.

[0031] In the embodiment, the rotating device 6 comprises a bearing and a shaft, which are common rotating mechanisms in the art.

[0032] In the embodiment, the fixed driving motor 5 is a direct current motor.

[0033] In the embodiment, reference is made to the accompanying Figure 1 The bottom cutting equipment for geological drilling comprises a bottom signal transmission module 1, the utility model 2, a rotating module 3 and a bottom cutting module 4, the bottom signal transmission module 1 is connected with the utility model 2, the rotating module 3 and the bottom cutting module 4 and transmits signals. The utility model is arranged above the cutting device of the bottom cutting equipment for geological drilling, the bottom cutting equipment for geological drilling (including the utility model) is conveyed to the cutting position in the drill pipe 15, the fixed driving motor 5 drives the lead-screw mechanism to rotate, the sliding block one 9 and the sliding block two 11 are driven to move inward, the corresponding inclined dovetail groove pushes the anchor block 10 outward, the anchor block 10 is in contact with the pipe wall of the drill pipe 15 and is tensioned, and the fixing of the cutting device is realized; the rotating module 3 and the bottom cutting module 4 complete the cutting of the pipe wall of the drill pipe. After the cutting is completed, the lead-screw mechanism is reversely rotated, the anchor block is retracted, and the bottom cutting equipment for geological drilling is taken out.

Claims

1. A positioning device for a geological drilling hole bottom cutting apparatus, characterised in that: The application relates to a driving device for a telescopic anchor, which comprises a fixed driving motor (5), a rotating device (6), a positive and negative screw mechanism, a pushing block one (9), an anchor block (10) and a pushing block two (11); the fixed driving motor (5) is connected with the positive and negative screw mechanism through the rotating device (6); the positive and negative screw mechanism is a transmission pair formed by a positive and negative screw (8), a positive screw nut (12) and a negative screw nut (7); the positive screw nut (12) is provided with the pushing block two (11); the negative screw nut (7) is provided with the pushing block one (9); the anchor block (10) is arranged between the pushing block one (9) and the pushing block two (11) and is in sliding contact with the pushing block one (9) and the pushing block two (11) through a bevel dovetail groove structure; the positive and negative screw (8) drives the positive screw nut and the negative screw nut to move towards or away from each other through rotation, and drives the pushing block one (9) and the pushing block two (11) to move towards or away from each other, so that the anchor block between the pushing block one (9) and the pushing block two (11) is extended or retracted.

2. A positioning device for a geological drilling hole bottom cutting apparatus according to claim 1, characterized in that: The positive and negative screw (8) is a positive and negative trapezoidal screw.

3. A positioning device for a geological drilling hole bottom cutting apparatus according to claim 1 or 2, characterised in that: The pushing block one (9) and the pushing block two (11) are hollow shaft structures, and the positive and negative screw (8) passes through the hollow shaft structures; the bevel dovetail groove structure is a dovetail groove structure arranged on a bevel, and the bevels on the ends of the pushing block one (9) and the pushing block two (11) are each provided with a dovetail groove which is matched with a dovetail (25) on the upper and lower sides of the anchor block (10).

4. A positioning device for a geological drilling hole bottom cutting apparatus according to claim 1 or 2, characterized in that: The anchor block (10) is provided with a rhombic anti-skid block on the outer side.

5. A positioning device for a geological drilling hole bottom cutting apparatus according to claim 3, characterized in that: The number of the anchor blocks (10) is four, and the four anchor blocks are evenly distributed around the positive and negative screw (8).

6. A positioning device for a geological drilling hole bottom cutting apparatus according to claim 5, characterized in that: The positive and negative screw mechanism is provided with a fixed shell (13), and the fixed shell (13) is a hollow pipe structure, the pipe wall is provided with four square long grooves, and the four anchor blocks are arranged in the square long grooves.

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