Automatic drill jamming prevention structure of underground drill jumbo

Abstract

The utility model discloses an automatic anti-jamming drill structure of an underground drill jumbo, which relates to the technical field of drill jumbo and comprises a mounting seat, a protective cover is fixedly arranged at the bottom of the mounting seat, a bottom plate is movably arranged in the protective cover, a drill bit part is arranged on the bottom surface of the bottom plate, an anti-jamming breaking sleeve is sleeved on the outer wall of the drill bit part in a threaded manner, and the anti-jamming breaking sleeve is sleeved on the outer wall of the drill bit part. A guide groove is formed in the outer wall of the anti-clamping and anti-breaking sleeve. When the drill bit part rotates, the anti-clamping crushing sleeve is promoted to move up and down in the axial direction of the drill bit part, at the moment, the guide rod slides along the inner wall of the guide groove, so that the anti-clamping crushing sleeve is promoted to rotate, and ores are crushed and dredged through rotation while the anti-clamping crushing sleeve moves up and down; the possibility that the drill bit is clamped by ore is reduced; the bottom plate is conveniently pulled to move upwards through the spring, meanwhile, the cam rod is conveniently driven to rotate through the second motor, the bottom plate is promoted to drive the drill bit part to move up and down along with rotation of the cam rod, and therefore the drill bit part is buffered.

Description

Technical Field

[0001] This utility model relates to the field of rock drilling rig technology, and in particular to an automatic anti-jamming structure for an underground rock drilling rig. Background Technology

[0002] Drill bits are important tools used in pile foundation construction to anchor foundation walls and tunnel walls. When drilling into bedrock, the drill bit may become stuck intermittently when breaking the rock layer due to obstruction of the anchor hole or hard rock in the underlying strata. This prevents the torsional elasticity from being released, making the rock-breaking process of the drill bit extremely unstable. This will directly damage the cutting carbide cutting bits and reduce the life of the drill bit and the lower drilling tools.

[0003] An existing patent (publication number: CN220791127U) discloses an anti-jamming mechanism for a rock drilling rig, belonging to the technical field of rock drilling rigs. It includes a mounting plate, a spring fixedly mounted on the bottom of the mounting plate, a cross plate fixedly mounted on the bottom of the spring, a motor and two fixed plates fixedly mounted on the bottom of the cross plate, and a first bevel gear fixedly mounted on the output shaft of the motor. In implementing this solution, the following problem was found in the existing technology, which has not been adequately resolved: When in use, the device only uses the motor to drive the crushing teeth to rotate and crush large pieces of rock behind the drill bit; however, the synchronous rotation of the crushing teeth with the drill bit results in poor rock crushing effectiveness. Utility Model Content

[0004] To improve the aforementioned device, which only uses a motor to drive the crushing teeth to rotate and crush large pieces of rock behind the drill bit, but the crushing teeth rotate synchronously with the drill bit, resulting in poor rock crushing effect.

[0005] This utility model provides an automatic anti-jamming structure for a downhole drilling rig, which adopts the following technical solution:

[0006] An automatic anti-jamming structure for a downhole drilling rig includes a mounting base, a protective cover fixedly installed at the bottom of the mounting base, a base plate movably installed inside the protective cover, a drill bit component installed on the bottom surface of the base plate, an anti-jamming and breakage sleeve threaded onto the outer wall of the drill bit component, a guide groove formed on the outer wall of the anti-jamming and breakage sleeve, two guide rods fixedly installed at the bottom of the base plate, the lower ends of the two guide rods slidingly engaging with the inner wall of the guide groove, and the upper end of the anti-jamming and breakage sleeve slidingly engaging with the inner wall of the guide rods.

[0007] The above technical solution involves first installing the mounting base on the trolley, and then crushing the mine by rotating the drill bit. When the drill bit rotates, it causes the anti-jamming crushing sleeve to move up and down along the axial direction of the drill bit. At this time, the guide rod slides along the inner wall of the guide groove, thereby causing the anti-jamming crushing sleeve to rotate.

[0008] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the mounting base is provided with several fastening bolts.

[0009] The above technical solution allows for easy fixing of the mounting base onto the trolley using fastening bolts.

[0010] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the bottom of the protective cover is provided with a through hole for the anti-jamming breakage sleeve to pass through, and the anti-jamming breakage sleeve is movably disposed in the through hole.

[0011] The above technical solution allows the anti-jamming and breakage sleeve to move up and down along the inner wall of the through hole, and the protective cover facilitates the protection of the drive unit and other components of the drill bit.

[0012] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the drill bit component includes a first motor, a reciprocating screw, and a drill bit body. The first motor is fixedly mounted on the bottom of the base plate, one end of the reciprocating screw is fixedly connected to the rotating shaft of the first motor, and the other end of the reciprocating screw is fixedly connected to the upper end of the drill bit body.

[0013] The above technical solution allows the first motor to easily drive the reciprocating screw and the drill bit body to rotate, which in turn facilitates the crushing of the ore as the drill bit body rotates.

[0014] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the anti-jamming breakage sleeve includes a nut, a connecting pipe, and a breakage toothed ring. The nut is threaded onto a reciprocating screw, the connecting pipe is rotatably disposed at the bottom of the nut, the breakage toothed ring is fixedly disposed at the lower end of the connecting pipe, two limiting rods are symmetrically disposed on the outer wall of the nut, and the guide groove is formed on the outer wall of the connecting pipe.

[0015] The above technical solution allows for the nut to be limited by the cooperation of the limiting rod and the guide rod, thereby causing the nut to move up and down when the reciprocating screw rotates. At the same time, the nut drives the connecting pipe and the crushing tooth ring to move synchronously.

[0016] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the guide rod is L-shaped, and a limiting groove is provided on the side wall of the guide rod. The end of the limiting rod away from the nut is inserted into the limiting groove and slides in cooperation with the inner wall of the limiting groove.

[0017] The above technical solution allows for the nut to be limited by the cooperation of the limiting rod and the limiting groove, thereby causing the reciprocating screw to rotate and control the nut to move up and down.

[0018] Optionally, in the above-mentioned automatic anti-jamming structure for a downhole drilling rig, the top surface of the base plate is connected to the mounting base by a number of springs, and limit blocks are fixedly installed at both ends of the base plate. The limit blocks slide in cooperation with the inner wall of the protective cover. A second motor is installed on the inner wall of the protective cover, and a cam rod is fixedly installed on the rotating shaft of the second motor. The cam rod slides against the top surface of the base plate.

[0019] The above technical solution allows the base plate to be easily pulled up by the spring, while the second motor facilitates the rotation of the cam rod. As the cam rod rotates, the base plate causes the drill bit to move up and down.

[0020] In summary, this utility model has at least one of the following beneficial effects:

[0021] When the drill bit rotates, it causes the anti-jamming break sleeve to move up and down along the axial direction of the drill bit. At this time, the guide rod slides along the inner wall of the guide groove, thereby causing the anti-jamming break sleeve to rotate. By rotating while the anti-jamming break sleeve moves up and down, it can crush and clear the ore, thereby reducing the possibility of the ore getting stuck in the drill bit.

[0022] The spring facilitates the upward movement of the base plate, while the second motor facilitates the rotation of the cam rod. As the cam rod rotates, it causes the base plate to move the drill bit up and down, thus buffering the drill bit. Attached Figure Description

[0023] Figure 1 This is a partial three-dimensional structural cross-sectional view of the present invention;

[0024] Figure 2 This is a schematic diagram of a partial three-dimensional unfolded structure of this utility model.

[0025] In the diagram: 1. Mounting base; 11. Fastening bolt; 2. Protective cover; 21. Through hole; 22. Second motor; 23. Cam rod; 3. Base plate; 31. Spring; 32. Limiting block; 4. Drill bit assembly; 41. First motor; 42. Reciprocating screw; 43. Drill bit body; 5. Anti-jamming and breakage sleeve; 51. Nut; 52. Connecting pipe; 53. Breaking toothed ring; 54. Limiting rod; 6. Guide groove; 7. Guide rod; 71. Limiting groove. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-2 The present invention will be described in further detail below.

[0027] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2One embodiment of this utility model is an automatic anti-jamming structure for a downhole drilling rig, which includes a mounting base 1 and a plurality of fastening bolts 11 on the mounting base 1. The fastening bolts 11 facilitate the fixing of the mounting base 1 on the rig.

[0028] A protective cover 2 is fixedly installed at the bottom of the mounting base 1. A base plate 3 is movably installed inside the protective cover 2. A drill bit 4 is installed on the bottom surface of the base plate 3. The top surface of the base plate 3 is connected to the mounting base 1 by several springs 31. Limiting blocks 32 are fixedly installed at both ends of the base plate 3. The limiting blocks 32 slide with the inner wall of the protective cover 2. A second motor 22 is installed on the inner wall of the protective cover 2. A cam rod 23 is fixedly installed on the rotating shaft of the second motor 22. The cam rod 23 slides against the top surface of the base plate 3. The springs 31 facilitate pulling the base plate 3 upward. At the same time, the second motor 22 facilitates driving the cam rod 23 to rotate. As the cam rod 23 rotates, it causes the base plate 3 to drive the drill bit 4 to move up and down, thereby buffering the drill bit 4.

[0029] The outer wall of the drill bit 4 is threaded with an anti-jamming and breakage sleeve 5. The bottom of the protective cover 2 is provided with a through hole 21 for the anti-jamming and breakage sleeve 5 to pass through. The anti-jamming and breakage sleeve 5 is movably disposed in the through hole 21. The through hole 21 allows the anti-jamming and breakage sleeve 5 to move up and down along the inner wall of the through hole 21. The protective cover 2 facilitates the protection of the drive part and other components of the drill bit 4, thereby reducing the possibility of ore getting stuck inside the device.

[0030] The drill bit assembly 4 includes a first motor 41, a reciprocating screw 42, and a drill bit body 43. The first motor 41 is fixedly mounted on the bottom of the base plate 3. One end of the reciprocating screw 42 is fixedly connected to the rotating shaft of the first motor 41, and the other end of the reciprocating screw 42 is fixedly connected to the upper end of the drill bit body 43. The first motor 41 facilitates the rotation of the reciprocating screw 42 and the drill bit body 43. As the drill bit body 43 rotates, it facilitates the crushing of the ore. The rotation of the reciprocating screw 42 controls the up-and-down movement of the anti-jamming crushing sleeve 5.

[0031] The outer wall of the anti-jamming and breakage sleeve 5 is provided with a guide groove 6. Two guide rods 7 are fixedly installed at the bottom of the base plate 3. The lower ends of the two guide rods 7 are slidably engaged with the inner wall of the guide groove 6, and the upper end of the anti-jamming and breakage sleeve 5 is slidably engaged with the inner wall of the guide rods 7. The anti-jamming and breakage sleeve 5 includes a nut 51, a connecting pipe 52, and a breakage toothed ring 53. The nut 51 is threaded onto the reciprocating screw 42. The connecting pipe 52 is rotatably installed at the bottom of the nut 51. The breakage toothed ring 53 is fixedly installed at the lower end of the connecting pipe 52. Two limiting rods 54 are symmetrically arranged on the outer wall of the nut 51. The guide groove 6 is opened on the outer wall of the connecting pipe 52. The limiting rods 54 cooperate with the guide rods 7 to facilitate the limiting of the nut 51, so that when the reciprocating screw 42 rotates, the nut 51 moves up and down. At the same time, the nut 51 drives the connecting pipe 52 and the breakage toothed ring 53 to move synchronously. At the same time, the guide rods 7 cooperate with the guide groove 6 to drive the connecting pipe 52 to rotate the breakage toothed ring 53.

[0032] The guide rod 7 is L-shaped, and a limiting groove 71 is provided on the side wall of the guide rod 7. The end of the limiting rod 54 away from the nut 51 is inserted into the limiting groove 71 and slides in cooperation with the inner wall of the limiting groove 71. The cooperation between the limiting rod 54 and the limiting groove 71 facilitates the limiting of the nut 51, thereby causing the reciprocating screw 42 to rotate and control the up and down movement of the nut 51.

[0033] Working principle: When using the automatic anti-jamming structure of the underground rock drilling rig, the mounting base 1 is first installed on the rig. Then, the drill bit 4 is rotated to break the mine. When the drill bit 4 rotates, it causes the anti-jamming breaking sleeve 5 to move up and down along the axial direction of the drill bit 4. At this time, the guide rod 7 slides along the inner wall of the guide groove 6, thereby causing the anti-jamming breaking sleeve 5 to rotate. By rotating while the anti-jamming breaking sleeve 5 moves up and down, the ore is broken and cleared, thereby reducing the possibility of the ore getting stuck on the drill bit 4.

[0034] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An automatic anti-jamming structure for a downhole drilling rig, comprising a mounting base (1), characterized in that: The bottom of the mounting base (1) is fixedly provided with a protective cover (2), and a base plate (3) is movably provided inside the protective cover (2). A drill bit (4) is provided on the bottom surface of the base plate (3). An anti-jamming and breakage sleeve (5) is threaded on the outer wall of the drill bit (4). A guide groove (6) is opened on the outer wall of the anti-jamming and breakage sleeve (5). Two guide rods (7) are fixedly provided at the bottom of the base plate (3). The lower ends of the two guide rods (7) slide in cooperation with the inner wall of the guide groove (6). The upper end of the anti-jamming and breakage sleeve (5) slides in cooperation with the inner wall of the guide rods (7).

2. The automatic anti-sticking structure for downhole drilling rigs according to claim 1, characterized in that: The mounting base (1) is provided with several fastening bolts (11).

3. The automatic anti-sticking structure for downhole drilling rigs according to claim 1, characterized in that: The bottom of the protective cover (2) is provided with a through hole (21) for the anti-jamming and breakage sleeve (5) to pass through, and the anti-jamming and breakage sleeve (5) is movably disposed in the through hole (21).

4. The automatic anti-sticking structure for downhole drilling rigs according to claim 1, characterized in that: The drill bit assembly (4) includes a first motor (41), a reciprocating screw (42) and a drill bit body (43). The first motor (41) is fixedly installed at the bottom of the base plate (3). One end of the reciprocating screw (42) is fixedly connected to the rotating shaft of the first motor (41), and the other end of the reciprocating screw (42) is fixedly connected to the upper end of the drill bit body (43).

5. The automatic anti-sticking structure for downhole drilling rigs according to claim 4, characterized in that: The anti-jamming and breakage sleeve (5) includes a nut (51), a connecting pipe (52), and a breaking toothed ring (53). The nut (51) is threaded onto the reciprocating screw (42). The connecting pipe (52) is rotatably disposed at the bottom of the nut (51). The breaking toothed ring (53) is fixedly disposed at the lower end of the connecting pipe (52). Two limiting rods (54) are symmetrically disposed on the outer wall of the nut (51). The guide groove (6) is opened on the outer wall of the connecting pipe (52).

6. The automatic anti-sticking structure for downhole drilling rigs according to claim 5, characterized in that: The guide rod (7) is L-shaped, and a limiting groove (71) is provided on the side wall of the guide rod (7). The end of the limiting rod (54) away from the nut (51) is inserted into the limiting groove (71) and slides in cooperation with the inner wall of the limiting groove (71).

7. The automatic anti-sticking structure for downhole drilling rigs according to claim 1, characterized in that: The top surface of the base plate (3) is connected to the mounting base (1) by a number of springs (31). Limiting blocks (32) are fixedly provided at both ends of the base plate (3). The limiting blocks (32) slide in cooperation with the inner wall of the protective cover (2). A second motor (22) is provided on the inner wall of the protective cover (2). A cam rod (23) is fixedly provided on the rotating shaft of the second motor (22). The cam rod (23) slides against the top surface of the base plate (3).

Images