CN220185040U

CN220185040U - Reamer for geological drilling

Info

Publication number: CN220185040U
Application number: CN202222454697.2U
Authority: CN
Inventors: 冯松宝; 汪宏志; 程琛; 许攀; 武文静
Original assignee: Third Exploration Team Of Anhui Coalfield Geology Bureau; Suzhou University
Current assignee: Third Exploration Team Of Anhui Coalfield Geology Bureau; Suzhou University
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-12-15
Anticipated expiration: 2032-09-16

Abstract

The utility model relates to a reamer for geological drilling, which comprises a motor, a drill rod and a drill bit, wherein the upper end of the drill rod is fixedly connected with the output end of the motor, the lower end of the drill rod is fixedly connected with the drill bit, a guide groove is formed in the inner surface of the drill rod, a pushing block is connected to the inner surface of the guide groove in a sliding manner, the lower end of the pushing block is of a conical structure, the upper surface of the pushing block is fixedly connected with an adjusting mechanism, and a chute is formed in the inner bottom wall of the drill rod; according to the utility model, through the arrangement of the drill rod, the drill bit, the pushing block, the adjusting mechanism, the sliding chute and the reaming cutter, when geological drilling is carried out, the drill bit is used for pre-drilling, the driving shaft is rotated by the screwdriver to enable the pushing block to move downwards, the reaming cutter is extruded and then protrudes out of the drill rod for secondary drilling, and the reaming cutter is used for reaming the pre-drilling.

Description

Reamer for geological drilling

Technical Field

The utility model relates to the technical field of hole expanders, in particular to a hole expander for geological drilling.

Background

Reaming drilling refers to the process of performing secondary drilling in the original exploration drilling by using a corresponding reaming tool or drilling tool so as to cut and enlarge the caliber of the original drilling to a required caliber. When geological drilling is performed, reaming operation is often required for the whole hole due to the requirements of casing pipe lowering and casing pipe following in a drilled hole.

The utility model of patent publication No. CN216381217U discloses a borehole geological drilling reaming device, including power cone, auxiliary box, rotary positioning mechanism and lift power unit, power cone outer wall both sides fixed mounting has two rotation axes, power cone one end movable mounting has the auxiliary box is kept away from to the rotation axis, auxiliary box inner wall fixed mounting has rotary positioning mechanism, power cone internally fixed mounting has lift power unit, rotary positioning mechanism includes servo motor, rubber slab, hydraulic telescoping rod and backup pad, servo motor is fixed with in auxiliary box inside wall upper end, servo motor output axle head and rotation axis keep away from power cone one end fixed connection. Although the rotary positioning mechanism drives the power cone to rotate by three hundred sixty degrees through the two servo motors, flexible control of the cone drill bit is realized, the whole device is positioned through the four hydraulic telescopic rods, and the stability of operation is improved, however, the rotary positioning mechanism needs to drill secondarily on the basis of the original hole after pre-drilling by using a drilling tool, so that the reaming effect is achieved, the problem that reaming equipment needs to be replaced in the drilling process is caused, the workload of workers is increased, and the geological drilling efficiency is reduced.

Disclosure of Invention

The embodiment of the utility model provides a reamer for geological drilling, which can solve the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a reamer for geological drilling, includes motor, drilling rod and drill bit, the upper end and the output fixed connection of motor of drilling rod, the lower extreme and the drill bit fixed connection of drilling rod, the guide way has been seted up to the internal surface of drilling rod, the internal surface sliding connection of guide way has the ejector pad, the lower extreme of ejector pad is the toper structure, the upper surface fixedly connected with adjustment mechanism of ejector pad, the spout has been seted up to the interior bottom wall of drilling rod, the reaming sword groove has been seted up on the circumference of drilling rod, the inside sliding connection of spout has the reaming cutter.

Preferably, the adjusting mechanism comprises a screw rod, a screw sleeve, a driven bevel gear, a driving bevel gear and a driving shaft, wherein the lower end of the screw rod is fixedly connected with the middle part of the upper surface of the push block, the screw sleeve is connected with the upper end of the screw rod in a threaded manner, the driven bevel gear is fixedly connected with the outer surface of the screw sleeve, the upper end of the screw sleeve is connected with an inner top wall bearing of the drill rod, the driving bevel gear is meshed with the driven bevel gear, and the driving shaft is fixedly connected with the driving bevel gear.

Preferably, the side of the drill rod is provided with an adjusting hole, and one end of the driving shaft positioned in the adjusting hole is provided with a cross groove.

Preferably, the surface of the drill bit and the surface of the reaming tool are both provided with anti-wear protrusions.

Preferably, the longitudinal section of the chute is in an inverted T shape, the lower end of the reaming cutter is matched with the chute, and the upper end of the reaming cutter is provided with an inclined plane which is matched with the conical structure of the lower end of the pushing block.

Preferably, a spring is arranged between the inner side wall of the chute and the reaming cutter.

Preferably, the motor is provided with a lifting mechanism for driving the motor to lift; elevating system includes support, guide bar, electric telescopic handle and mounting panel, the bottom of support is used for fixed with ground, the inside of support is provided with the guide bar, sliding connection has the mounting panel on the guide bar, motor and mounting panel fixed connection, the upper end fixedly connected with electric telescopic handle of support, electric telescopic handle's flexible end and mounting panel fixed connection.

Preferably, a plurality of ground nails are arranged at the edge of the lower end of the bracket.

Compared with the prior art, the utility model has the advantages that through the arrangement of the drill rod, the drill bit, the pushing block, the adjusting mechanism, the chute and the reaming cutter, when geological drilling is carried out, the drill bit is used for pre-drilling, the driving shaft is rotated by the screwdriver to enable the pushing block to move downwards, the reaming cutter is extruded and then protrudes out of the drill rod to carry out secondary drilling, and the reaming cutter is used for reaming the pre-drilling.

Drawings

FIG. 1 is a schematic cross-sectional view of a drill rod according to the present utility model;

FIG. 2 is a schematic diagram of the front structure of the present utility model;

fig. 3 is a right-side view of the driving shaft of the present utility model.

In the figure: 1. a motor; 2. a drill rod; 3. a drill bit; 4. a pushing block; 5. an adjusting mechanism;

501. a screw rod; 502. a screw sleeve; 503. a driven bevel gear; 504. a drive bevel gear;

505. a driving shaft; 6. a chute; 7. reaming a cutter groove; 8. reaming tools; 9. a lifting mechanism; 901. a bracket; 902. a guide rod; 903. an electric telescopic rod; 904. a mounting plate; 10. a spring; 11. a cross groove; 12. ground nails; 13. an adjustment aperture; 14. a guide groove.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the technical solutions of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

As shown in fig. 1 to 3, a reamer for geological drilling comprises a motor 1, a drill rod 2 and a drill bit 3, wherein the upper end of the drill rod 2 is fixedly connected with the output end of the motor 1, the lower end of the drill rod 2 is fixedly connected with the drill bit 3, a guide groove 14 is formed in the inner surface of the drill rod 2, a push block 4 is slidably connected to the inner surface of the guide groove 14, the lower end of the push block 4 is of a conical structure, an adjusting mechanism 5 is fixedly connected to the upper surface of the push block 4, a sliding groove 6 is formed in the inner bottom wall of the drill rod 2, a reaming cutter groove 7 is formed in the circumferential direction of the drill rod 2, and a reaming cutter 8 is slidably connected to the inner portion of the sliding groove 6.

When the drilling machine is specifically used, the support 901 is fixed on the ground through the ground nail 12, the motor 1 and the electric telescopic rod 903 are connected with an external power supply and then started, the motor 1 drives the drill bit 3 to rotate, the electric telescopic rod 903 gradually pushes the drill bit 3 to move downwards to pre-drill, the drill bit 3 is withdrawn after the pre-drilling is completed, the driving shaft 505 is rotated through a screwdriver according to the size of a required hole expansion, the driving shaft 505 drives the bevel gear 504, the driven bevel gear 503, the threaded sleeve 502 and the screw 501 to drive the push block 4 to move downwards by a corresponding distance, under the guiding action of the sliding groove 6, the reaming tool 8 protrudes out of the drill rod 2 after being extruded by the push block 4, the motor 1 and the electric telescopic rod 903 are started again, the reaming operation is carried out on the pre-drilling, the drill bit 3 is withdrawn after the reaming is completed, the driving shaft 505 is reversely rotated through the screwdriver, and the reaming tool 8 is reset under the restoring elastic action of the spring 10.

In order to achieve the purpose of adjustable reaming diameter, preferably, the adjusting mechanism 5 comprises a screw rod 501, a screw sleeve 502, a driven bevel gear 503, a driving bevel gear 504 and a driving shaft 505, wherein the lower end of the screw rod 501 is fixedly connected with the middle part of the upper surface of the push block 4, the screw sleeve 502 is in threaded connection with the upper end of the screw rod 501, the driven bevel gear 503 is fixedly connected with the outer surface of the screw sleeve 502, the upper end of the screw sleeve 502 is connected with an inner top wall bearing of the drill rod 2, the driving bevel gear 504 is meshed with the driven bevel gear 503, the driving bevel gear 504 is driven to rotate when the driving shaft 505 positively rotates, the driven bevel gear 503 drives the screw sleeve 502 to rotate, the screw rod 501 drives the push block 4 to move downwards under the guiding action of the guide groove 14, and similarly, the screw rod 501 drives the push block 4 to move upwards when the driving shaft 505 reversely rotates.

In order to achieve the purpose of convenient adjustment, preferably, the side surface of the drill rod 2 is provided with an adjusting hole 13, one end of the driving shaft 504 positioned in the adjusting hole 13 is provided with a cross groove 11, and the driving shaft 504 can be rotated by using a screwdriver through the arrangement of the cross groove 11.

In order to extend the service life of the drill bit 3 and the reamer 8, it is preferable that the surface of the drill bit 3 and the surface of the reamer 8 are provided with wear-preventing protrusions.

In order to achieve better stability of the reaming cutter 8, preferably, the longitudinal section of the chute 6 is in an inverted T shape, the lower end of the reaming cutter 8 is matched with the chute 6, and the upper end of the reaming cutter 8 is provided with an inclined plane which is matched with the conical structure of the lower end of the push block 4.

In order to achieve the purpose of conveniently resetting the reaming cutter 8, preferably, a spring 10 is arranged between the inner side wall of the chute 6 and the reaming cutter 8, and when the reaming cutter 8 is not influenced by the push block 4, the spring 10 drives the reaming cutter 8 to reset.

In order to achieve the purpose of drilling, preferably, the motor 1 is provided with a lifting mechanism 9 for driving the motor to lift; the elevating system 9 includes support 901, guide bar 902, electric telescopic rod 903 and mounting panel 904, and the bottom of support 901 is used for fixed with ground, and the inside of support 901 is provided with guide bar 902, and sliding connection has mounting panel 904 on the guide bar 902, motor 1 and mounting panel 904 fixed connection, the upper end fixedly connected with electric telescopic rod 903 of support 901, the flexible end and the mounting panel 904 fixed connection of electric telescopic rod 903, electric telescopic rod 903 can drive motor 1 and move down, realizes drilling or reaming operation.

For the purpose of facilitating the fixing of the present utility model, it is preferable that the lower end edge of the bracket 901 is provided with a plurality of ground nails 12.

Compared with the prior art, the utility model adopts the arrangement of the drill rod 2, the drill bit 3, the push block 4, the adjusting mechanism 5, the chute 6 and the reaming cutter 8, when geological drilling is carried out, firstly, the drill bit 3 is used for pre-drilling, the driving shaft 504 is rotated by using the screwdriver to enable the push block 4 to move downwards, the reaming cutter 8 protrudes out of the drill rod 2 after being extruded for secondary drilling, and the reaming cutter 8 is used for reaming the pre-drilling.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A reamer for geological drilling, characterized by: including motor (1), drilling rod (2) and drill bit (3), the upper end of drilling rod (2) and the output fixed connection of motor (1), the lower extreme and the drill bit (3) fixed connection of drilling rod (2), guide slot (14) have been seted up to the internal surface of drilling rod (2), the internal surface sliding connection of guide slot (14) has ejector pad (4), the lower extreme of ejector pad (4) is the toper structure, the upper surface fixedly connected with adjustment mechanism (5) of ejector pad (4), spout (6) have been seted up to the interior bottom wall of drilling rod (2), reaming sword groove (7) have been seted up on the circumference of drilling rod (2), the inside sliding connection of spout (6) has reaming cutter (8).

2. A reamer for geological drilling according to claim 1, wherein: the adjusting mechanism (5) comprises a screw rod (501), a screw sleeve (502), a driven bevel gear (503), a driving bevel gear (504) and a driving shaft (505), wherein the lower end of the screw rod (501) is fixedly connected with the middle part of the upper surface of the push block (4), the screw sleeve (502) is connected with the upper end of the screw rod (501) in a threaded manner, the driven bevel gear (503) is fixedly connected with the outer surface of the screw sleeve (502), the upper end of the screw sleeve (502) is connected with an inner top wall bearing of the drill rod (2), the driving bevel gear (504) is meshed with the driven bevel gear (503), and the driving shaft (505) is fixedly connected with the driving bevel gear (504).

3. A reamer for geological drilling according to claim 2, wherein: an adjusting hole (13) is formed in the side face of the drill rod (2), and a cross groove (11) is formed in one end, located inside the adjusting hole (13), of the driving shaft (505).

4. A reamer for geological drilling according to claim 1, wherein: the surface of the drill bit (3) and the surface of the reaming cutter (8) are both provided with anti-abrasion protrusions.

5. A reamer for geological drilling according to claim 1, wherein: the longitudinal section of the chute (6) is in an inverted T shape, the lower end of the reaming cutter (8) is matched with the chute (6), and the upper end of the reaming cutter (8) is provided with an inclined plane which is matched with the conical structure of the lower end of the pushing block (4).

6. A reamer for geological drilling according to claim 1, wherein: a spring (10) is arranged between the inner side wall of the chute (6) and the reaming cutter (8).

7. A reamer for geological drilling according to claim 1, wherein: the motor (1) is provided with a lifting mechanism (9) for driving the motor to lift;

elevating system (9) are including support (901), guide bar (902), electric telescopic handle (903) and mounting panel (904), the bottom of support (901) is used for fixed with ground, the inside of support (901) is provided with guide bar (902), sliding connection has mounting panel (904) on guide bar (902), motor (1) and mounting panel (904) fixed connection, the upper end fixedly connected with electric telescopic handle (903) of support (901), the flexible end and mounting panel (904) fixed connection of electric telescopic handle (903).

8. A reamer for geological drilling according to claim 7, wherein: the lower end edge of the bracket (901) is provided with a plurality of ground nails (12).