Drilling device capable of adjusting blast hole track

Abstract

The invention discloses a drilling device capable of realizing blast hole track adjustment, which comprises a mounting plate mounted on a drilling machine arm, a drilling rod is rotatably connected to the mounting plate, one end of the drilling rod is in transmission fit with the drilling machine arm, the other end of the drilling rod is fixedly connected with a universal joint, and one end, far away from the drilling rod, of the universal joint is fixedly connected with a connecting rod; the tail end of the connecting rod is fixedly connected with a drill bit; an adjusting mechanism is fixedly installed at the end, close to the universal joint, of the drill rod, rotationally matched with the connecting rod and used for adjusting the inclination angle of the connecting rod. The mounting plate is mounted on the drilling machine arm, the drilling machine arm drives the drill rod to rotate and the mounting plate to move, and the drill rod drives the connecting rod and the drill bit to rotate through the universal joint when rotating; when the drilling direction of the drill bit needs to be adjusted, 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 in the prior art, the drilling direction cannot be adjusted in the drilling process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel and underground engineering drilling and blasting excavation, and in particular to a drilling device capable of adjusting blast hole trajectory. Background Art

[0002] Tunnels are a common construction content in highway engineering construction. In the drilling and blasting construction, during the drilling process, it is necessary to strictly control the angle of the drill rod and the spacing of the surrounding holes to ensure that the blasthole is straight and the angle is correct.

[0003] However, in the actual drilling process, improper control of the drill rod angle often results in the hole being not straight, or even the inclined hole exceeding the limit. However, the existing drilling device can generally only perform straight hole drilling, and cannot adjust the drilling direction during the drilling process.

[0004] Therefore, it is urgent to provide a drilling device that can adjust the trajectory of the blast hole to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a drilling device capable of adjusting the trajectory of the blast hole, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a drilling device capable of adjusting the trajectory of a blasthole, comprising a mounting plate mounted on a drill rig arm, a drill rod being rotatably connected to the mounting plate, one end of the drill rod being in transmission cooperation with the drill rig arm, the other end of the drill rod being fixedly connected to a universal joint, an end of the universal joint away from the drill rod being fixedly connected to a connecting rod, the end of the connecting rod being fixedly connected to a drill bit; an adjustment mechanism is fixedly mounted on an end of the drill rod close to the universal joint, the adjustment mechanism is rotatably cooperated with the connecting rod, and the adjustment mechanism is used to adjust the inclination angle of the connecting rod.

[0007] Preferably, the adjustment mechanism includes a positioning cylinder fixedly mounted 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; an adjusting piece is arranged at one end of the positioning cylinder close to the connecting rod, and the adjusting piece is in contact and cooperate with the connecting rod.

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

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

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

[0011] Preferably, the grooving mechanism includes a positioning sleeve sleeved on the outside of the drill rod, a locking piece is installed on the mounting plate, and the positioning sleeve is detachably connected to the mounting plate through the locking piece; a connecting sleeve is provided at one end of the positioning sleeve away from the mounting plate, the connecting sleeve is slidably sleeved on the drill rod, and the adjustment mechanism is arranged in the connecting sleeve; a grooving cutter head is fixedly provided on the outer wall of the connecting sleeve, and the grooving cutter head is arranged along the axial direction of the connecting sleeve; a limiting piece is provided at one end of the positioning sleeve close to the connecting sleeve, and the positioning sleeve is limitedly matched with the connecting sleeve through the limiting piece.

[0012] Preferably, the limiting member includes a first limiting strip fixedly connected to the positioning sleeve near one end of the connecting sleeve, and a second limiting strip fixedly connected to the outer wall of the connecting sleeve near one end of the positioning sleeve, the first limiting strip and the second limiting strip are arranged correspondingly, and the grooving cutter head and the second limiting strip are on the same straight line.

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

[0014] Preferably, the locking member includes a threaded rod passed through the mounting plate, a clamping block is sleeved on the threaded rod, a locking plate is fixedly sleeved on the outer wall of one end of the positioning sleeve close to the mounting plate, and the locking plate is located between the clamping block and the mounting plate; both ends of the threaded rod are threadedly connected with nuts, and the clamping block is pressed against the locking plate through the nuts.

[0015] Preferably, a non-slip pad is fixedly connected to a side of the pressing block close to the locking disk.

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

[0017] The drilling device capable of adjusting the trajectory of the blasthole provided by the present invention is installed on the drilling arm through the mounting plate, and the drilling arm drives the rotation of the drill rod and the displacement of the mounting plate. When the drill rod rotates, the connecting rod and the drill bit are driven to rotate through the universal joint and move forward, thereby realizing the drilling operation. When the drilling direction of the drill bit needs to be adjusted, the drilling direction of the drilling device can be adjusted by controlling the adjustment mechanism to deflect the direction of the connecting rod, thereby solving the problem that the drilling direction cannot be adjusted during the drilling process in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the drilling device capable of adjusting the trajectory of the blast hole according to the present invention;

[0020] Figure 2 It is a front view of the drilling device capable of adjusting the trajectory of the blast hole according to the present invention;

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

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

[0023] In the figure: 1. mounting plate; 2. drill rod; 3. universal joint; 4. connecting rod; 5. drill bit; 6. positioning cylinder; 7. mounting seat; 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 disk; 19. nut. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] like Figures 1 to 4 As shown, the present invention provides a drilling device capable of adjusting the trajectory of a blasthole, comprising a mounting plate 1 mounted on a drill arm, a drill rod 2 being rotatably connected to the mounting plate 1, one end of the drill rod 2 being transmission-coordinated with the drill arm, the other end of the drill rod 2 being fixedly connected with a universal joint 3, an end of the universal joint 3 being fixedly connected with a connecting rod 4 at a distance from the drill rod 2, and a drill bit 5 being fixedly connected with the end of the connecting rod 4; an adjusting mechanism being fixedly mounted on an end of the drill rod 2 close to the universal joint 3, the adjusting mechanism being rotatably coordinated with the connecting rod 4, and the adjusting mechanism being used to adjust the inclination angle of the connecting rod 4.

[0026] When the present invention is in use, the drilling device is mounted on the drilling arm through the mounting plate 1, and the drilling arm drives the drill rod 2 to rotate and the mounting plate 1 to move. When the drill rod 2 rotates, the connecting rod 4 and the drill bit 5 are driven to rotate through the universal joint 3 and move forward, thereby realizing the drilling operation. When the drilling direction of the drill bit 5 needs to be adjusted, the direction of the connecting rod 4 is deflected by controlling the adjustment mechanism, so that the drilling direction of the drilling device can be adjusted.

[0027] To further optimize the solution, in order not to affect the rotation of the universal joint 3 and to ensure that the drill rod 2 can normally drive the connecting rod 4 and the drill bit 5 to rotate, the adjustment mechanism includes a positioning cylinder 6 fixedly mounted 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, and the adjusting piece is in contact with the connecting rod 4.

[0028] A further optimized solution is that the adjusting member includes a plurality of mounting seats 7 fixedly mounted on the inner wall of the positioning tube 6, the number of the mounting seats 7 is not less than three, and the plurality of mounting seats 7 are arranged at equal intervals along the circumference of the positioning tube 6; a telescopic cylinder 8 is installed on the mounting seat 7, the end of the telescopic cylinder 8 is fixedly connected to a support plate 9, and the connecting rod 4 is in contact with the support plate 9.

[0029] The telescopic cylinder 8 can adopt an electric telescopic rod or a hydraulic rod. By setting multiple pipelines inside the drill rod 2, each pipeline corresponds to a mounting seat 7, and by laying wires in the pipeline or filling hydraulic oil, a pipeline joint is set at one end of the drill rod 2 close to the mounting plate 1. When it is necessary to adjust the direction of the connecting rod 4, after determining the required drilling direction of the drill bit 5, the connecting rod 4 can be adjusted within a certain angle by controlling the extension and retraction of the telescopic cylinder 8. Subject to the limitation of the positioning tube 6 and the limit of the drill bit 5 during the drilling process, the adjustable range of the drilling direction of the drill bit 5 is generally between 0-5°, and the angle depends on the inner diameter of the positioning tube 6.

[0030] According to a further optimization scheme, in order to ensure effective support for the connecting rod 4 and prevent the connecting rod 4 from uncontrolled deviation, the supporting plate 9 is an arc-shaped plate.

[0031] To further optimize the solution, in order to achieve the energy-gathering effect during blasting, a grooving mechanism is installed on the mounting plate 1, and the grooving mechanism is coaxially sleeved on the outside of the drill pipe 2. A gap is provided between the end of the grooving mechanism away from the mounting plate 1 and the connecting rod 4, and the outer diameter of the grooving mechanism is not greater than the outer diameter of the drill bit 5.

[0032] The grooving mechanism can be used to groove the inner wall of the borehole so that the grooving direction is along the designed contour line of the tunnel, effectively reducing the over-break and under-break phenomenon and improving the blasting efficiency.

[0033] A further optimized solution is that the grooving mechanism includes a positioning sleeve 10 sleeved on the outside of the drill rod 2, a locking piece is installed on the mounting plate 1, and the positioning sleeve 10 is detachably connected to the mounting plate 1 through the locking piece; a connecting sleeve 11 is provided at the 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 adjustment mechanism is arranged in the connecting sleeve 11; a grooving cutter head 12 is fixedly provided on the outer wall of the connecting sleeve 11, and the grooving cutter head 12 is arranged along the axial direction of the connecting sleeve 11; a limiting piece is provided at the end of the positioning sleeve 10 close to the connecting sleeve 11, and the positioning sleeve 10 is limitedly matched with the connecting sleeve 11 through the limiting piece.

[0034] When in use, the position of the positioning sleeve 10 is locked by the locking member, so that the position of the connecting sleeve 11 is limited by the setting of the limit member, and then the grooving cutter head 12 on the connecting sleeve 11 is used to cut grooves on the inner wall of the borehole. The specific process is as follows: after the drill bit 5 is drilled, the drilling rig arm drives the mounting plate 1 to push forward, thereby pushing the connecting sleeve 11 forward under the action of the positioning sleeve 10. When the front end of the connecting sleeve 11 reaches the face of the face, it is pushed into the blasthole under the forward driving force of the positioning sleeve 10. The drilling and grooving work are carried out simultaneously, and when the predetermined drilling depth is reached, the drilling and grooving work are completed simultaneously. Affected by the drill rod 2, when the drilling direction of the drill bit 5 is adjusted, the grooving operation cannot cut grooves on the borehole after the adjustment direction.

[0035] A further optimized solution is to facilitate the positioning of the connecting sleeve 11, thereby determining the position of the groove on the inner wall of the drill hole. The limiting member includes a first limiting strip 13 fixedly connected to the positioning sleeve 10 near one end of the connecting sleeve 11, and a second limiting strip 14 is fixedly connected to the outer wall of the connecting sleeve 11 near one end of the positioning sleeve 10. The first limiting strip 13 and the second limiting strip 14 are arranged correspondingly, and the grooving cutter head 12 and the second limiting strip 14 are on the same straight line.

[0036] To further optimize the solution, in order to prevent debris from entering the positioning tube 6 during drilling and affecting the rotation of the universal joint 3, a rubber sheath 15 is fixedly connected to one end of the connecting sleeve 11 close to the drill bit 5, and the end of the rubber sheath 15 is rotatably matched with the connecting rod 4.

[0037] A further optimized solution is provided to facilitate adjustment of the position of the first limiting strip 13 on the positioning sleeve 10, and the locking member includes a threaded rod 16 passed through the mounting plate 1, and a clamping block 17 is sleeved on the threaded rod 16. A locking plate 18 is fixedly sleeved on the outer wall of one end of the positioning sleeve 10 close to the mounting plate 1, and the locking plate 18 is located between the clamping block 17 and the mounting plate 1; nuts 19 are threadedly connected at both ends of the threaded rod 16, and the clamping block 17 is pressed on the locking plate 18 through the nuts 19.

[0038] When in use, the nut 19 located on the side of the mounting plate 1 away from the positioning sleeve 10 is fitted with the mounting plate 1 and the position of the nut 19 is kept unchanged. Then, by rotating the other nut 19, the clamping block 17 is pressed against the locking plate 18 by the nut 19. The position of the positioning sleeve 10 is fixed by the setting of the two nuts 19, thereby facilitating the determination of the position of the grooving cutter head 12 on the connecting sleeve 11.

[0039] According to a further optimization scheme, in order to ensure the fixing effect of the clamping block 17 on the locking disk 18 , a non-slip pad is fixedly connected to one side of the clamping block 17 close to the locking disk 18 .

[0040] The drilling device provided by the present invention can realize the adjustment of the trajectory of the blasthole. The working principle is as follows: the drilling device is installed on the drilling arm through the mounting plate 1, and then the drilling arm is used to drive the drill rod 2 to rotate and push the mounting plate 1 forward. When the drill rod 2 rotates, it drives the connecting rod 4 and the drill bit 5 to rotate through the universal joint 3 and push forward, thereby realizing the drilling operation. After the drill bit 5 drills, the drilling arm drives the mounting plate 1 to push forward, thereby pushing the connecting sleeve 11 forward under the action of the positioning sleeve 10. When the front end of the connecting sleeve 11 reaches the face of the tunnel, it is pushed into the blasthole under the forward driving force of the positioning sleeve 10, and the grooving operation is realized by using the grooving cutter head 12 on the connecting sleeve 11, so that the drilling and grooving work are carried out simultaneously, and when the predetermined drilling depth is reached, the drilling and grooving work are completed simultaneously. When the drilling direction of the drill bit 5 needs to be adjusted, the direction of the connecting rod 4 is deflected by controlling 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, so that 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 grooving work is completed synchronously, the drill rod 2 is recovered, the drill bit 5 provides an external thrust to the connecting sleeve 11 to pull it out, and the drill rod 2 is reset, and a drilling work cycle is completed.

[0041] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A drilling device capable of adjusting the trajectory of a blast hole, characterized in that: The invention comprises a mounting plate (1) mounted on a drill rig arm, a drill rod (2) being rotatably connected to the mounting plate (1), one end of the drill rod (2) being in transmission cooperation with the drill rig arm, 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), the end of the connecting rod (4) being fixedly connected to a drill bit (5); an adjustment mechanism being fixedly mounted on the end of the drill rod (2) close to the universal joint (3), the adjustment mechanism being in rotation cooperation with the connecting rod (4), and the adjustment mechanism being used to adjust the inclination angle of the connecting rod (4).

2. The drilling device capable of adjusting the blast hole trajectory according to claim 1, characterized in that: The adjustment mechanism comprises a positioning cylinder (6) fixedly sleeved on the drill rod (2), the universal joint (3) being arranged in the positioning cylinder (6), and a gap being arranged between the universal joint (3) and the cylinder wall of the positioning cylinder (6); an adjustment member is arranged at one end of the positioning cylinder (6) close to the connecting rod (4), and the adjustment member is in contact with and cooperates with the connecting rod (4).

3. The drilling device capable of adjusting the trajectory of the blast hole according to claim 2, characterized in that: The adjusting member comprises a plurality of mounting seats (7) fixedly mounted on the inner wall of the positioning tube (6), the number of the mounting seats (7) being no less than three, and the plurality of mounting seats (7) being arranged at equal intervals along the circumference of the positioning tube (6); a telescopic cylinder (8) is mounted on the mounting seat (7), the end of the telescopic cylinder (8) being fixedly connected to a support plate (9), and the connecting rod (4) is in contact with and fits with the support plate (9).

4. The drilling device capable of adjusting the trajectory of the blast hole according to claim 3, characterized in that: The support plate (9) is an arc-shaped plate.

5. The drilling device capable of adjusting the trajectory of the blast hole according to claim 1, characterized in that: A grooving mechanism is mounted on the mounting plate (1), the grooving mechanism is coaxially sleeved on the outside of the drill rod (2), a gap is provided between the end of the grooving mechanism away from the mounting plate (1) and the connecting rod (4), and the outer diameter of the grooving mechanism is not greater than the outer diameter of the drill bit (5).

6. The drilling device capable of adjusting the trajectory of the blast hole according to claim 5, characterized in that: The grooving mechanism comprises a positioning sleeve (10) sleeved on the outside of the drill rod (2), a locking piece is installed on the mounting plate (1), and the positioning sleeve (10) is detachably connected to the mounting plate (1) through the locking piece; a connecting sleeve (11) is provided 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 grooving cutter head (12) is fixedly arranged on the outer wall of the connecting sleeve (11), and the grooving cutter head (12) is arranged along the axial direction of the connecting sleeve (11); a limiting piece is provided at one end of the positioning sleeve (10) close to the connecting sleeve (11), and the positioning sleeve (10) is limitedly matched with the connecting sleeve (11) through the limiting piece.

7. The drilling device capable of adjusting the trajectory of the blast hole according to claim 6, characterized in that: The limiting member comprises a first limiting strip (13) fixedly connected to one end of the positioning sleeve (10) close to the connecting sleeve (11); a second limiting strip (14) is fixedly connected to the outer wall of the connecting sleeve (11) close to one end of the positioning sleeve (10); the first limiting strip (13) and the second limiting strip (14) are arranged correspondingly, and the grooving cutter head (12) and the second limiting strip (14) are on the same straight line.

8. The drilling device capable of adjusting the trajectory of the blast hole according to claim 6, characterized in that: A rubber sheath (15) is fixedly connected to one end of the connecting sleeve (11) close to the drill bit (5), and the end of the rubber sheath (15) is rotatably matched with the connecting rod (4).

9. The drilling device capable of adjusting the trajectory of the blast hole according to claim 6, characterized in that: The locking member comprises a threaded rod (16) inserted into the mounting plate (1), a clamping block (17) being sleeved on the threaded rod (16), a locking plate (18) being fixedly sleeved on the outer wall of one end of the positioning sleeve (10) close to the mounting plate (1), and the locking plate (18) being located between the clamping block (17) and the mounting plate (1); nuts (19) are threadedly connected at both ends of the threaded rod (16), and the clamping block (17) is pressed onto the locking plate (18) through the nut (19).

10. The drilling device capable of adjusting the trajectory of the blast hole according to claim 9, characterized in that: A non-slip pad is fixedly connected to one side of the pressing block (17) close to the locking plate (18).

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