Stable conveying device for drill rod of raise boring machine

Abstract

The stable conveying device for the drill rod of the raise boring machine comprises a first clamping block which is clamped in a mounting cylinder in a sliding mode and is screwed with an output shaft of a motor, two supporting legs of a second clamping block are inserted in the mounting cylinder, and transmission wheels are meshed between the supporting legs and the first clamping block. When the motor drives the first clamping block to move, the second clamping block can be driven to move in the direction opposite to the moving direction of the first clamping block through the transmission effect of the transmission wheel, and the stroke needed for clamping the drill rod can be shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reverse circulation drilling machines, and particularly relates to a reverse circulation drilling machine drill rod stable conveying device. BACKGROUND

[0002] The reverse circulation drilling machine is driven by the motor of the drilling machine to drive the hydraulic motor, the hydraulic motor drives the swivel, and the hydraulic power is used to transmit the torque to the drilling tool system to drive the drill rod and the drill bit to rotate. The rolling cutter on the pilot hole drill bit or the reaming drill bit makes pure rolling or micro-slippage along the bottom rock working surface under the action of the drilling pressure. At the same time, the axial pulling and pressing force generated by the main machine oil cylinder also acts on the pilot hole drill bit or the reaming drill bit through the power head and the drill rod, so that the rolling cutter of the pilot hole drill bit rolls under the action of the drilling pressure to generate impact load, and the rolling cutter teeth produce impact, extrusion and shearing action on the rock to break the rock. The drill rod needs to be installed on the drilling machine, and a conveying device is needed to make the center of the drill rod consistent with the vertical center and make the drill rod perpendicular to the hole and drill the pilot hole in the forward direction. However, the existing conveying device has poor stability, which causes the drill rod to tilt on the ground when contacting the drilling machine, thereby increasing the construction difficulty.

[0003] The patent with the publication number CN217760906U discloses a reverse circulation drilling machine drill rod stable conveying device, which clamps the drill rod by moving the second clamping block towards the first clamping block, thereby ensuring the stability of the drill rod. However, since the first clamping block is in a fixed state, the movement stroke required for the first clamping block and the second clamping block to close and clamp the drill rod is large. Therefore, the inventor proposes a reverse circulation drilling machine drill rod stable conveying device. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a reverse circulation drilling machine drill rod stable conveying device which can reduce the required stroke for clamping the drill rod.

[0005] The technical solution of the present application is as follows:

[0006] The present application provides a reverse circulation drilling machine drill rod stable conveying device, which comprises a first clamping block slidingly connected to the inside of the mounting cylinder and rotatably connected to the output shaft of the motor, and two legs of a second clamping block are inserted into the inside of the mounting cylinder, and a transmission wheel is engaged between the legs and the first clamping block.

[0007] When the motor drives the first clamping block to move, the transmission wheel is used for transmission, which drives the second clamping block to move in the opposite direction of the first clamping block, thereby reducing the required stroke for clamping the drill rod.

[0008] In some implementations, the first clamping block comprises a limiting cylinder rotatably connected to the output shaft of the motor.

[0009] In some implementations, the limiting cylinder is coaxially arranged with the mounting cylinder.

[0010] In some implementations, the outer wall of the limiting cylinder is provided with a sliding groove clamped with the mounting cylinder.

[0011] In some implementations, the sliding groove is arranged in parallel with the axis of the limiting cylinder.

[0012] In some implementations, the sliding grooves are uniformly distributed along the circumference of the limiting cylinder.

[0013] In some implementations, the transmission wheels are symmetrically arranged on both sides of the limiting cylinder.

[0014] In some implementations, the axis of the transmission wheel is perpendicular to the axis of the limiting cylinder.

[0015] In some implementations, the inner wall of the supporting leg is provided with a limiting slot for clamping the transmission wheel.

[0016] In some implementations, the limiting slot is parallel to the axis of the limiting cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0017] Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings, it should be understood that the embodiments described below are only used to explain the present application, but not to limit the scope of the present application, in the drawings:

[0018] Fig. 1 is a schematic view of a stabilizing and conveying device for a drill rod of a reverse circulation drilling rig according to an embodiment of the present application;

[0019] Fig. 2 is a schematic view of the installation of a first clamp block and a second clamp block according to an embodiment of the present application;

[0020] Fig. 3 is a schematic view of a second clamp block according to an embodiment of the present application;

[0021] REFERENCE NUMERALS:

[0022] 10, mounting cylinder; 11, motor; 12, limiting strip; 13, transmission wheel;

[0023] 20, first clamp block; 21, limiting cylinder; 22, sliding groove;

[0024] 30, second clamp block; 31, supporting leg; 32, limiting slot;

[0025] 40, drill rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments, it should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

[0027] In the related art, the anti-well drilling machine is driven by the motor of the drilling machine to drive the hydraulic motor, and the hydraulic power is used to transmit the torque to the drilling tool system to drive the drill pipe and the drill bit to rotate. The hob on the pilot hole drill bit or the reaming drill bit rolls along the bottom rock working surface under the action of the drilling pressure. At the same time, the axial tension and compression force generated by the main machine oil cylinder also acts on the pilot hole drill bit or the reaming drill bit through the power head and the drill pipe, so that the hob of the pilot hole drill bit rolls under the action of the drilling pressure, generates an impact load, and the hob teeth produce impact, extrusion and shearing effect on the rock, crush the rock, and the drill pipe is installed on the drilling machine. The conveying device is used to make the center of the drill pipe consistent with the vertical center, and the drill pipe is perpendicular to the hole and the forward construction drill pilot hole. However, the stability of the existing conveying device is poor, which causes the drill pipe to tilt on the ground when contacting the drilling machine, increasing the construction difficulty.

[0028] The patent with publication number CN217760906U discloses a kind of anti-well drilling machine drill pipe stable conveying device, it is by second clamping block towards first clamping block moves and clamps drill pipe, to guarantee the stability of drill pipe. However, since first clamping block is in fixed state, it leads to the movement stroke required for first clamping block and second clamping block to close and clamp drill pipe is larger.

[0029] The present embodiment provides a kind of anti-well drilling machine drill pipe stable conveying device, which can reduce the stroke required for clamping drill pipe.

[0030] Please refer to Figs. 1-3 In the present embodiment, a kind of anti-well drilling machine drill pipe stable conveying device includes first clamping block 20 that is slidably connected in the inside of installation cylinder 10 and is engaged with the output shaft of motor 11, two supporting legs 31 of second clamping block 30 are inserted into the inside of installation cylinder 10, and transmission wheel 13 is engaged between supporting leg 31 and first clamping block 20.

[0031] The technical scheme of the present embodiment is adopted, when motor 11 drives first clamping block 20 to move, the transmission effect of transmission wheel 13 is used, which will drive second clamping block 30 to move in the opposite direction of the moving direction of first clamping block 20, to reduce the stroke required for clamping drill pipe 40.

[0032] It should be noted that the present embodiment is based on the improvement of the patent with publication number CN217760906U, named a kind of anti-well drilling machine drill pipe stable conveying device, transmission wheel 13 can be used to make first clamping block 20 and second clamping block 30 move oppositely, to reduce the stroke required for clamping drill pipe 40.

[0033] In the embodiment, the motor 11 is fixedly connected to the inside of the mounting cylinder 10, and the output shaft of the motor 11 is coaxially arranged with the axis of the mounting cylinder 10, the first clamping block 20 comprises a limiting cylinder 21 screwed with the output shaft of the motor 11, and the limiting cylinder 21 is coaxially arranged with the mounting cylinder 10, the limiting cylinder 21 is screwed outside the output shaft of the motor 11, and a sliding groove 22 for clamping the mounting cylinder 10 is arranged on the outer wall of the limiting cylinder 21, specifically, the sliding groove 22 is arranged in parallel with the axis of the limiting cylinder 21, and the sliding groove 22 is uniformly distributed along the circumference of the limiting cylinder 21, a limiting strip 12 is formed on the inner wall of the mounting cylinder 10, the limiting strip 12 is arranged in one-to-one correspondence with the sliding groove 22, and the limiting strip 12 and the sliding groove 22 form a sliding clamping fit, so that the limiting cylinder 21 is only allowed to move along the axis of the mounting cylinder 10, and the rotation of the limiting cylinder 21 inside the mounting cylinder 10 is prevented, and when the motor 11 works, the first clamping block 20 can be driven by the limiting cylinder 21 to move along the axial direction of the mounting cylinder 10.

[0034] In addition, the transmission wheel 13 is rotatably connected inside the mounting cylinder 10, and the transmission wheel 13 is symmetrically arranged on both sides of the limiting cylinder 21, the axis of the transmission wheel 13 is perpendicular to the axis of the limiting cylinder 21, the transmission wheel 13 is in meshing transmission connection with the limiting cylinder 21, and the limiting cylinder 21 can drive the transmission wheel 13 to rotate when moving along the axial direction of the mounting cylinder 10.

[0035] In addition, the second clamping block 30 is integrally formed in a U shape, the two legs 31 of the second clamping block 30 are inserted into the inside of the mounting cylinder 10, and the two legs 31 are symmetrically arranged on both sides of the limiting cylinder 21, the two legs 31 are parallel to the axis of the mounting cylinder 10, a limiting groove 32 for clamping the transmission wheel 13 is arranged on the inner wall of the leg 31, the extending direction of the limiting groove 32 is parallel to the axis of the limiting cylinder 21, the groove bottom of the limiting groove 32 is provided with teeth for meshing with the transmission wheel 13, and the transmission wheel 13 is rotatably clamped in the limiting groove 32, so that the rotation of the transmission wheel 13 can prevent the second clamping block 30 from rotating inside the mounting cylinder 10, and the rotation of the transmission wheel 13 can drive the second clamping block 30 to move along the axial direction of the mounting cylinder 10.

[0036] It should be noted that the transmission wheel 13 is arranged between the leg 31 and the limiting cylinder 21, the limiting cylinder 21 moves along the axial direction of the mounting cylinder 10 under the drive of the motor 11, so that the moving direction of the leg 31 is opposite to the moving direction of the limiting cylinder 21, that is, the moving directions of the first clamping block 20 and the second clamping block 30 are opposite, that is, the first clamping block 20 and the second clamping block 30 will be synchronously moved in opposite directions to clamp the drill rod 40, compared with the clamping mode of single clamping block movement, the stroke required for clamping the drill rod in the embodiment is smaller.

[0037] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the scope of the present application.

Claims

1. A reverse circulation drilling machine drill pipe stabilizing and conveying device, characterized in that, The first clamping block is slidably clamped in the installation cylinder and screwed with the output shaft of the motor, and the two legs of the second clamping block are inserted into the installation cylinder, and the transmission wheels are engaged between the legs and the first clamping block.

2. The anti-inwell drilling rig drill rod stable conveying device according to claim 1, characterized in that, The first clamping block comprises a limiting cylinder screwed with the output shaft of the motor.

3. The anti-inwell drilling rig drill rod stable conveying device according to claim 2, characterized in that, The limiting cylinder is coaxially arranged with the installation cylinder.

4. The anti-inwell drilling rig drill rod stable conveying device according to claim 3, characterized in that, The outer wall of the limiting cylinder is provided with a sliding groove clamped with the installation cylinder.

5. The anti-inwell drilling rig drill rod stable conveying device according to claim 4, characterized in that, The sliding groove is arranged in parallel with the axis of the limiting cylinder.

6. The anti-inwell drilling rig drill rod stable conveying device according to claim 5, characterized in that, The sliding grooves are uniformly distributed along the circumference of the limiting cylinder.

7. The anti-inwell drilling rig drill rod stable conveying device according to claim 6, characterized in that, The transmission wheels are symmetrically arranged on both sides of the limiting cylinder.

8. The anti-inwell drilling rig drill rod stable conveying device according to claim 7, characterized in that, The axis of the transmission wheel is perpendicular to the axis of the limiting cylinder.

9. The anti-inwell drilling rig drill rod stable conveying device according to claim 8, characterized in that, The inner wall of the leg is provided with a limiting groove for clamping the transmission wheel.

10. The anti-inwell drilling rig drill rod stable conveying device according to claim 9, characterized in that, The limiting groove is parallel to the axis of the limiting cylinder.

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