A drilling device capable of adjusting a borehole trajectory

Abstract

The application discloses a drilling device capable of adjusting a borehole trajectory, which comprises a mounting plate installed on a drilling rig arm, a drill rod rotatably connected to the mounting plate, one end of the drill rod being in transmission cooperation with the drilling rig arm, the other end of the drill rod being fixedly connected with a universal joint, one end of the universal joint away from the drill rod being fixedly connected with a connecting rod, and the distal end of the connecting rod being fixedly connected with a drill bit; an adjusting mechanism is fixedly installed at the end of the drill rod close to the universal joint, the adjusting mechanism is in rotational cooperation with the connecting rod, and the adjusting mechanism is used for adjusting the inclination angle of the connecting rod; the mounting plate is installed on the drilling rig arm, the drilling rig arm drives the drill rod to rotate and the displacement of the mounting plate, the drill rod drives the connecting rod and the drill bit to rotate through the universal joint when rotating; when it is necessary to adjust the drilling direction of the drill bit, the direction of the connecting rod is deflected by controlling the adjusting mechanism, the drilling direction of the drilling device can be adjusted, and the problem that the drilling direction cannot be adjusted during the drilling process in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel and underground engineering drilling and blasting excavation technology, and particularly relates to a drilling device capable of adjusting a blast hole trajectory. BACKGROUND

[0002] Tunnels are common construction contents in highway engineering construction. In the drilling and blasting method construction, the angle of the drill rod and the spacing of the peripheral holes need to be strictly controlled during drilling to ensure that the blast holes are straight and the angles are correct.

[0003] However, in the actual drilling process, the hole may be not straight due to improper control of the angle of the drill rod, and even the hole may be out of limit. However, the existing drilling device can only drill straight holes and cannot adjust the direction of drilling during drilling.

[0004] Therefore, it is urgent to provide a drilling device capable of adjusting a blast hole trajectory to solve the above problems. SUMMARY

[0005] The present application aims to provide a drilling device capable of adjusting a blast hole trajectory to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides a drilling device capable of adjusting a blast hole trajectory, which comprises a mounting plate mounted on a drill arm, a drill rod rotatably connected to the mounting plate, one end of the drill rod in transmission cooperation with the drill arm, the other end of the drill rod fixedly connected with a universal joint, the end of the universal joint away from the drill rod fixedly connected with a connecting rod, and the end of the connecting rod fixedly connected with a drill bit; an adjusting mechanism fixedly installed at the end of the drill rod close to the universal joint, the adjusting mechanism in rotational cooperation with the connecting rod, and the adjusting mechanism used for adjusting the inclination angle of the connecting rod.

[0007] Preferably, the adjusting mechanism comprises a positioning cylinder fixedly sleeved on the drill rod, the universal joint is arranged in the positioning cylinder, and a gap is arranged between the universal joint and the cylinder wall of the positioning cylinder; the end of the positioning cylinder close to the connecting rod is provided with an adjusting piece, and the adjusting piece is in contact cooperation with the connecting rod.

[0008] Preferably, the adjusting piece comprises a plurality of mounting seats fixedly installed on the inner wall of the positioning cylinder, the number of the mounting seats is not less than three, and the mounting seats are equidistantly arranged along the circumference of the positioning cylinder; a telescopic cylinder is installed on the mounting seat, the end of the telescopic cylinder is fixedly connected with a support plate, and the connecting rod is in contact cooperation with the support plate.

[0009] Preferably, the support plate is an arc-shaped plate.

[0010] Preferably, the mounting plate is provided with a cutting mechanism coaxially sleeved outside the drill rod, and a gap is formed between the end of the cutting mechanism away from the mounting plate and the connecting rod, and the outer diameter of the cutting mechanism is not greater than the outer diameter of the drill bit.

[0011] Preferably, the cutting mechanism comprises a positioning sleeve sleeved outside the drill rod, the mounting plate is provided with a locking piece, and the positioning sleeve is detachably connected to the mounting plate through the locking piece; the end of the positioning sleeve away from the mounting plate is provided with a connecting sleeve, the connecting sleeve is sleeved on the drill rod in a sliding manner, and the adjusting mechanism is arranged in the connecting sleeve; the outer wall of the connecting sleeve is fixedly provided with a cutting tool bit, and the cutting tool bit is arranged along the axial direction of the connecting sleeve; the end of the positioning sleeve close to the connecting sleeve is provided with a limiting piece, and the positioning sleeve is limitedly matched with the connecting sleeve through the limiting piece.

[0012] Preferably, the limiting piece comprises a first limiting strip plate fixedly connected to the end of the positioning sleeve close to the connecting sleeve, the outer wall of the end of the connecting sleeve close to the positioning sleeve is fixedly connected with a second limiting strip plate, the first limiting strip plate and the second limiting strip plate are correspondingly arranged, and the cutting tool bit and the second limiting strip plate are on the same straight line.

[0013] Preferably, the end of the connecting sleeve close to the drill bit is fixedly connected with a rubber sheath, and the end of the rubber sheath is rotationally matched with the connecting rod.

[0014] Preferably, the locking piece comprises a threaded rod penetrating through the mounting plate, a pressing block is sleeved on the threaded rod, a locking disc is fixedly sleeved on the outer wall of the end of the positioning sleeve close to the mounting plate, and the locking disc is located between the pressing block and the mounting plate; both ends of the threaded rod are threadedly connected with nuts, and the pressing block is pressed on the locking disc through the nuts.

[0015] Preferably, the side of the pressing block close to the locking disc is fixedly connected with an anti-skid pad.

[0016] Compared with the prior art, the present application has the following advantages and technical effects:

[0017] The drilling device provided by the present application can realize the adjustment of the hole trajectory, is mounted on the drilling machine arm through the mounting plate, and is driven to rotate by the drilling machine arm and the displacement of the mounting plate. When the drill rod rotates, the connecting rod and the drill bit are driven to rotate by the universal joint and are pushed forward, so that the drilling operation is realized. When it is necessary to adjust the drilling direction of the drill bit, the direction of the connecting rod is deflected by controlling the adjusting mechanism, so that the drilling direction of the drilling device is adjusted, and the problem that the drilling direction cannot be adjusted during drilling in the prior art is solved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the drilling device of the present invention that enables adjustment of borehole trajectory;

[0020] Figure 2 This is a front view of the drilling device of the present invention that enables adjustment of borehole trajectory;

[0021] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0022] Figure 4 for Figure 2 A cross-sectional view along the BB direction;

[0023] In the diagram: 1. Mounting plate; 2. Drill rod; 3. Universal joint; 4. Connecting rod; 5. Drill bit; 6. Positioning cylinder; 7. Mounting base; 8. Telescopic cylinder; 9. Support plate; 10. Positioning sleeve; 11. Connecting sleeve; 12. Grooving cutter head; 13. First limiting strip; 14. Second limiting strip; 15. Rubber sheath; 16. Threaded rod; 17. Clamping block; 18. Locking disc; 19. Nut. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 4 As shown, the present invention provides a drilling device capable of adjusting the borehole trajectory, including a mounting plate 1 mounted on a drilling arm, a drill rod 2 rotatably connected to the mounting plate 1, one end of the drill rod 2 being drivenly engaged with the drilling arm, and the other end of the drill rod 2 being fixedly connected to a universal joint 3, the end of the universal joint 3 away from the drill rod 2 being fixedly connected to a connecting rod 4, and the end of the connecting rod 4 being fixedly connected to a drill bit 5; an adjustment mechanism is fixedly installed at the end of the drill rod 2 near the universal joint 3, the adjustment mechanism being rotatably engaged with the connecting rod 4, and the adjustment mechanism being used to adjust the tilt angle of the connecting rod 4.

[0026] In use, the drilling device is installed on the drilling rig arm through the mounting plate 1, the drilling rod 2 is rotated through the rotation of the drilling rig arm and the displacement of the mounting plate 1, the connecting rod 4 and the drill bit 5 are rotated through the universal joint 3 when the drilling rod 2 rotates, and the drilling rod 2 is pushed forward, so that the drilling operation is realized. When it is necessary to adjust the drilling direction of the drill bit 5, the direction of the connecting rod 4 is deflected through the control of the adjusting mechanism, so that the drilling direction of the drilling device is adjusted.

[0027] Further optimization scheme, in order to not affect the rotation of the universal joint 3 and ensure that the drilling rod 2 can normally drive the connecting rod 4 and the drill bit 5 to rotate, the adjusting mechanism comprises a positioning cylinder 6 fixedly sleeved on the drilling rod 2, the universal joint 3 is arranged in the positioning cylinder 6, and a gap is arranged between the universal joint 3 and the cylinder wall of the positioning cylinder 6; an adjusting part is arranged at one end of the positioning cylinder 6 close to the connecting rod 4, and the adjusting part is in contact with the connecting rod 4.

[0028] Further optimization scheme, the adjusting part comprises a plurality of mounting seats 7 fixedly installed on the inner wall of the positioning cylinder 6, the number of the mounting seats 7 is not less than three, and the mounting seats 7 are equidistantly arranged along the circumference of the positioning cylinder 6; a telescopic cylinder 8 is installed on the mounting seat 7, and the distal end of the telescopic cylinder 8 is fixedly connected with a supporting plate 9; the connecting rod 4 is in contact with the supporting plate 9.

[0029] The telescopic cylinder 8 can adopt an electric telescopic rod or a hydraulic rod, a plurality of pipelines are arranged in the drilling rod 2, each pipeline corresponds to one mounting seat 7, electric wires or hydraulic oil is laid in the pipeline, a pipeline joint is arranged at one end of the drilling rod 2 close to the mounting plate 1, when it is necessary to adjust the direction of the connecting rod 4, after the drilling direction required by the drill bit 5 is determined, the telescopic cylinder 8 is controlled to extend or retract, so that the connecting rod 4 can be adjusted within a certain angle, the drilling direction of the drill bit 5 can be adjusted within 0-5°, and the angle depends on the size of the inner diameter of the positioning cylinder 6.

[0030] Further optimization scheme, in order to ensure effective support of the connecting rod 4 and prevent uncontrolled deviation of the connecting rod 4, the supporting plate 9 is an arc plate.

[0031] Further optimization scheme, in order to have an energy-gathering effect during blasting, a slotting mechanism is arranged on the mounting plate 1, the slotting mechanism is coaxially sleeved outside the drilling rod 2, a gap is arranged between one end of the slotting mechanism away from the mounting plate 1 and the connecting rod 4, and the outer diameter of the slotting mechanism is not greater than the outer diameter of the drill bit 5.

[0032] The slotting mechanism can groove the inner wall of the drilling hole, the grooving direction is along the tunnel design contour line, the overbreak and underbreak phenomenon is effectively reduced, and the blasting efficiency is improved.

[0033] Further optimization scheme, the cutting mechanism includes a positioning sleeve 10 sleeved outside the drill rod 2, the mounting plate 1 is provided with a locking piece, the positioning sleeve 10 is detachably connected with the mounting plate 1 through the locking piece; the end of the positioning sleeve 10 away from the mounting plate 1 is provided with a connecting sleeve 11, the connecting sleeve 11 is sleeved on the drill rod 2, and the adjusting mechanism is arranged in the connecting sleeve 11; the outer wall of the connecting sleeve 11 is fixedly provided with a cutting tool bit 12, the cutting tool bit 12 is arranged along the axis direction of the connecting sleeve 11; the end of the positioning sleeve 10 close to the connecting sleeve 11 is provided with a limiting piece, and the positioning sleeve 10 is limitedly matched with the connecting sleeve 11 through the limiting piece.

[0034] In use, the position of the positioning sleeve 10 is locked through the locking piece, so that the position of the connecting sleeve 11 is limited through the limiting piece, and then the cutting tool bit 12 on the connecting sleeve 11 is used to realize the cutting of the inner wall of the drill hole. The specific process is as follows: after the drill bit 5 drills, the drill arm drives the mounting plate 1 to push forward, so that the connecting sleeve 11 is pushed forward under the action of the positioning sleeve 10, when the front end of the connecting sleeve 11 reaches the working face, the connecting sleeve 11 is pushed into the blast hole under the forward pushing force of the positioning sleeve 10, the drilling and cutting work are carried out synchronously, and the drilling and cutting work are completed synchronously when the predetermined drilling depth is reached. Affected by the drill rod 2, when the drilling direction of the drill bit 5 is adjusted, the cutting operation cannot cut the drill hole after the adjustment direction.

[0035] Further optimization scheme, in order to facilitate the positioning of the position of the connecting sleeve 11, so as to determine the position of the cutting on the inner wall of the drill hole, the limiting piece includes a first limiting strip plate 13 fixedly connected to the end of the positioning sleeve 10 close to the connecting sleeve 11, the outer wall of the end of the connecting sleeve 11 close to the positioning sleeve 10 is fixedly connected with a second limiting strip plate 14, the first limiting strip plate 13 and the second limiting strip plate 14 are correspondingly arranged, and the cutting tool bit 12 and the second limiting strip plate 14 are on the same straight line.

[0036] Further optimization scheme, in order to avoid the debris in the drill hole from entering the positioning cylinder 6 and affecting the rotation of the universal joint 3, the end of the connecting sleeve 11 close to the drill bit 5 is fixedly connected with a rubber sheath 15, and the end of the rubber sheath 15 is rotationally matched with the connecting rod 4.

[0037] Further optimization scheme, in order to facilitate the adjustment of the position of the first limiting strip plate 13 on the positioning sleeve 10, the locking piece includes a threaded rod 16 penetrating the mounting plate 1, a pressing block 17 is sleeved on the threaded rod 16, a locking disc 18 is fixedly sleeved on the outer wall of the end of the positioning sleeve 10 close to the mounting plate 1, and the locking disc 18 is located between the pressing block 17 and the mounting plate 1; the two ends of the threaded rod 16 are threadedly connected with nuts 19, and the pressing block 17 is pressed on the locking disc 18 through the nuts 19.

[0038] In use, the nut 19 on the side of the mounting plate 1 away from the positioning sleeve 10 is attached to the mounting plate 1 and the position of the nut 19 is kept unchanged, then the other nut 19 is rotated to press the pressing block 17 against the locking disc 18 by the nut 19, and the position of the positioning sleeve 10 is fixed by the two nuts 19, so that the position of the cutting groove cutter head 12 on the connecting sleeve 11 is determined conveniently.

[0039] Further optimization scheme is that the anti-skid pad is fixedly connected to the side of the pressing block 17 close to the locking disc 18 to ensure the fixing effect of the pressing block 17 on the locking disc 18.

[0040] The drilling device provided by the present application can realize borehole trajectory adjustment, and the working principle is as follows: the drilling device is installed on the drilling machine arm through the mounting plate 1, then the drilling machine arm drives the drill rod 2 to rotate and push the mounting plate 1 forward, the drill rod 2 drives the connecting rod 4 and the drill bit 5 to rotate and advance forward through the universal joint 3, so that the drilling operation is realized. After the drill bit 5 drills, the drilling machine arm pushes the mounting plate 1 forward, so that the connecting sleeve 11 is pushed forward under the action of the positioning sleeve 10, when the front end of the connecting sleeve 11 reaches the working face, the connecting sleeve 11 is pushed into the borehole under the forward pushing force of the positioning sleeve 10, the cutting groove cutter head 12 on the connecting sleeve 11 realizes the cutting groove operation, the drilling and cutting groove operations are simultaneously performed, the predetermined drilling depth is reached, and the drilling and cutting groove operations are simultaneously completed. When it is necessary to adjust the drilling direction of the drill bit 5, the direction of the connecting rod 4 is deflected through the control of the telescopic cylinder 8, under the action of the universal joint 3, the transmission effect of the drill rod 2 on the connecting rod 4 can still be maintained, the connecting rod 4 rotates with the drill rod 2, and the drilling direction of the drilling device can be adjusted. After the drilling and cutting groove operations are simultaneously completed, the drill rod 2 is retracted, the drill bit 5 provides an outward pushing force for the connecting sleeve 11 to pull it out, the drill rod 2 is reset, and a drilling work cycle is completed.

[0041] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any change or replacement that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.

Claims

1. A drilling apparatus capable of borehole trajectory adjustment, characterized by, The application relates to a drilling device, which comprises a mounting plate (1) installed on a drilling rig arm, a drill rod (2) rotatably connected to the mounting plate (1), one end of the drill rod (2) being in transmission cooperation with the drilling rig arm, the other end of the drill rod (2) being fixedly connected with a universal joint (3), one end of the universal joint (3) away from the drill rod (2) being fixedly connected with a connecting rod (4), and the end of the connecting rod (4) being fixedly connected with a drill bit (5); an adjusting mechanism is fixedly installed at one end of the drill rod (2) close to the universal joint (3), the adjusting mechanism is in rotational cooperation with the connecting rod (4), and the adjusting mechanism is used for adjusting the inclination angle of the connecting rod (4). The adjusting mechanism comprises a positioning cylinder (6) fixedly sleeved on the drill rod (2), the universal joint (3) is arranged in the positioning cylinder (6), and a gap is arranged between the universal joint (3) and the cylinder wall of the positioning cylinder (6); an adjusting piece is arranged at one end of the positioning cylinder (6) close to the connecting rod (4), the adjusting piece is in contact cooperation with the connecting rod (4); the adjusting piece comprises a plurality of mounting seats (7) fixedly installed on the inner wall of the positioning cylinder (6), the number of the mounting seats (7) is not less than three, and the mounting seats (7) are equidistantly arranged along the circumference of the positioning cylinder (6); a telescopic cylinder (8) is installed on the mounting seat (7), the end of the telescopic cylinder (8) is fixedly connected with a supporting plate (9), the connecting rod (4) is in contact cooperation with the supporting plate (9); a slotting mechanism is installed on the mounting plate (1), the slotting mechanism is coaxially sleeved on the outer side of the drill rod (2), a gap is arranged between one end of the slotting mechanism away from the mounting plate (1) and the connecting rod (4), and the outer diameter of the slotting mechanism is not greater than the outer diameter of the drill bit (5); the slotting mechanism comprises a positioning sleeve (10) sleeved on the outer side of the drill rod (2), a locking piece is installed on the mounting plate (1), the positioning sleeve (10) is detachably connected with the mounting plate (1) through the locking piece; a connecting sleeve (11) is arranged at one end of the positioning sleeve (10) away from the mounting plate (1), the connecting sleeve (11) is slidably sleeved on the drill rod (2), and the adjusting mechanism is arranged in the connecting sleeve (11); a slotting cutter head (12) is fixedly arranged on the outer wall of the connecting sleeve (11) and arranged along the axial direction of the connecting sleeve (11); a limiting piece is arranged at one end of the positioning sleeve (10) close to the connecting sleeve (11), and the positioning sleeve (10) is in limiting cooperation with the connecting sleeve (11) through the limiting piece.

2. The borehole drilling apparatus capable of borehole trajectory adjustment of claim 1, wherein, The supporting plate (9) is an arc-shaped plate.

3. The borehole drilling apparatus capable of borehole trajectory adjustment of claim 1, wherein, The limiting piece comprises a first limiting baffle (13) fixedly connected to the positioning sleeve (10) near one end of the connecting sleeve (11), and a second limiting baffle (14) fixedly connected to the outer wall of the connecting sleeve (11) near one end of the positioning sleeve (10), the first limiting baffle (13) and the second limiting baffle (14) are correspondingly arranged, and the cutting slot cutter head (12) and the second limiting baffle (14) are on the same straight line.

4. The borehole drilling apparatus capable of borehole trajectory adjustment of claim 1, wherein, The connecting sleeve (11) is fixedly connected with a rubber sheath (15) near one end of the drill bit (5), and the end of the rubber sheath (15) is rotationally connected with the connecting rod (4).

5. The borehole drilling apparatus capable of borehole trajectory adjustment of claim 1, wherein, The locking piece comprises a threaded rod (16) penetrating through the mounting plate (1), a pressing block (17) sleeved on the threaded rod (16), a locking disc (18) fixedly sleeved on the outer wall of one end of the positioning sleeve (10) near the mounting plate (1), and the locking disc (18) is located between the pressing block (17) and the mounting plate (1); both ends of the threaded rod (16) are threadedly connected with nuts (19), and the pressing block (17) is pressed on the locking disc (18) through the nuts (19).

6. The borehole drilling apparatus capable of borehole trajectory adjustment of claim 5, wherein, The pressing block (17) is fixedly connected with a non-slip pad on one side near the locking disc (18).

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