A vertical adjustment structure for rotary drilling machine

Abstract

The present invention discloses a vertical adjustment structure for a rotary drilling machine, comprising a mast and a support arm, wherein the front and rear ends of the top of the support arm are hinged with a first electric push rod respectively, two mutually symmetrical ball seats are provided on one side of the mast, and the other end of the first electric push rod is provided with a first ball pin, the outer surface of the first ball pin is slidably connected to the inner cavity of the ball seat, and the mast is fixedly provided with a vertical detection mechanism, a buffer mechanism is connected between the support arm and the mast, and angle adjustment mechanisms with locking functions are respectively provided on the opposite sides of the lower end of the mast, the angle adjustment mechanism includes mutually meshing planetary gears, an adjustment bracket with adjustable spacing and a connecting bracket rotatable around the planetary gears, and a clamping mechanism for locking the mast is provided at the bottom of the mast. The present invention realizes automatic leveling of the drill bit during construction and improves drilling accuracy by arranging an angle adjustment mechanism on the mast in combination with a horizontal detection device, and at the same time, a clamping mechanism is provided to ensure the verticality of the drill rod during drilling.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, in particular to a verticality adjustment structure for a rotary drilling rig. Background Art

[0002] A rotary drilling rig is a comprehensive drilling rig characterized by rapid drilling speed, minimal pollution, and high maneuverability. It utilizes a short spiral drill bit for dry excavation, while a rotary drill bit can also be used for wet excavation with a mud wall. The rotary drilling rig can be used with a hammer to break up hard formations before drilling. When used with an enlarging drill bit, it can be expanded at the bottom of the hole. The rotary drilling rig utilizes multi-layer telescopic drill pipes, minimizing drilling time and labor intensity. It also eliminates the need for mud circulation and deslagging, resulting in cost savings and making it particularly suitable for foundation construction in urban areas.

[0003] During construction, the existing rotary drilling rig cannot always maintain a vertical position on the ground due to the fluctuating flatness of the ground. As a result, the rotary drilling rig cannot be used on ground with poor flatness. Chinese patent publication number CN113202421A discloses a "safety monitoring device for a rotary drilling rig". The verticality of the rotary drilling rig's drill bit relative to the ground is adjusted by adjusting the height of the electric telescopic rods on both sides. However, the drill bit often exhibits a certain degree of polarization during downward rotation, which can easily cause the drill bit to tilt, resulting in a large error in drilling accuracy and a certain offset in the final position of the drill bit entering the ground. Summary of the Invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a verticality adjustment structure for a rotary drilling rig. By arranging an angle adjustment mechanism combined with a horizontal detection device on the mast, the drill bit can be automatically leveled during construction, thereby improving the drilling accuracy. At the same time, the present invention is provided with a clamping mechanism to ensure the verticality of the drill rod during the drilling process of the rotary drilling rig.

[0005] The technical solutions of the present invention are as follows:

[0006] A verticality adjustment structure for a rotary drilling rig comprises a mast and a support arm, wherein the front and rear ends of the top of the support arm are respectively hinged with a first electric push rod, two mutually symmetrical ball sockets are provided on the side of the mast close to the support arm, and the other end of the first electric push rod is provided with a first ball pin, the outer surface of the first ball pin is slidably connected to the inner cavity of the ball socket, the mast is fixedly provided with a verticality detection mechanism, a buffer mechanism is connected between the support arm and the mast, and angle adjustment mechanisms with locking functions are respectively provided on the opposite sides of the lower end of the mast, the angle adjustment mechanism comprises mutually meshing planetary gears, an adjustment bracket with adjustable spacing and a connecting bracket rotatable around the planetary gears, and a clamping mechanism for locking the mast is provided at the bottom of the mast.

[0007] Furthermore, the angle adjustment mechanism includes two adjustment brackets arranged in parallel up and down, the inner wall of the adjustment bracket is close to the outer wall of the mast, the adjustment bracket includes a first support bracket and a second support bracket, and a second electric push rod is connected between the first support bracket and the second support bracket.

[0008] Furthermore, the connecting bracket is a U-shaped bracket, and a third electric push rod is provided at either end of the connecting bracket, and a second ball pin is provided at both ends of the connecting bracket, and an arc-shaped limiting groove is provided on the outer circumferential surface of the second ball pin. A spherical inner cavity is provided on the outer side of the adjustment bracket, and a third limiting block is provided in the spherical inner cavity. The second ball pin is slidably connected with the spherical inner cavity under the limiting action of the third limiting block and the arc-shaped limiting groove.

[0009] Furthermore, the planetary gear includes a sun gear and a ring gear, and several planetary gears are meshed between the sun gear and the ring gear. The sun gear is connected to the output end of the motor, and the connecting bracket is fixedly connected to the transmission shaft. The ring gear is fixedly connected to the transmission shaft, driving the connecting bracket to rotate around the transmission shaft.

[0010] Furthermore, the buffer mechanism includes a spring and a universal joint transmission assembly. The universal joint transmission assembly is symmetrically connected to the left side of the support arm in the front and rear directions. The output end of the universal joint transmission assembly is fixedly connected to the spring, and the other end of the spring is fixedly connected to the mast.

[0011] Furthermore, the universal joint transmission assembly includes a first universal joint fork, a universal cross shaft and a second universal joint fork. The inner cavity of the first universal joint fork is transmission-connected to the inner cavity of the second universal joint fork through the universal cross shaft. Rotation grooves are respectively provided at the front and rear positions on the left side of the support arm. A first limit block is provided at the input end of the first universal joint fork, and the outer surface of the first limit block is slidingly connected to the inner surface of the rotation groove.

[0012] Furthermore, two limit rods are symmetrically arranged on the front and rear right side of the mast, a slide groove is arranged inside the limit rod, and a second limit block is arranged at the output end of the second universal joint fork, and the second limit block is sleeved in the limit rod through the slide groove and is slidably connected to the slide groove.

[0013] Furthermore, a drill rod is arranged parallel to the left side of the mast, and a first fixing frame and a second fixing frame are fixedly connected to the upper and lower sides of the drill rod and the mast respectively. The verticality detection mechanism includes a first verticality detector and a second verticality detector. The first verticality detector is located on the front side of the first fixing frame, and the second verticality detector is located on the left side of the second fixing frame.

[0014] Furthermore, the clamping mechanism includes a fourth electric push rod, and a plurality of clamping blocks are provided at the bottom of the fourth electric push rod.

[0015] Furthermore, the bottom end of the support arm is fixedly connected to a slewing mechanism, the top of the slewing mechanism is fixedly provided with a control room parallel to the support arm, the front and rear sides of the slewing mechanism are respectively connected to running crawlers parallel to each other, a pulley frame is provided on the top of the mast, a winch is provided at the tail end of the control room, a steel wire rope is wound around the winch, the steel wire rope passes through the pulley frame and the other end of the steel wire rope is fixedly connected to the top of the drill pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention is provided with a verticality detector and an angle adjustment mechanism. The angle adjustment mechanism adjusts the drill rod according to the horizontal sensing result to ensure that the drill rod remains vertical when the ground is uneven or the vehicle body is tilted. At the same time, the clamping mechanism has a locking function, which can lock the drill rod to avoid the polarization generated during the drilling process affecting the verticality of the drill rod, thereby ensuring the stability of the drill rod during operation.

[0018] (2) The present invention is provided with a plurality of electric push rods. Compared with the electro-hydraulic push rods, the electric push rods are screw-driven and self-locking with threads, with high positioning accuracy and good self-locking performance, no risk of liquid leakage, and convenient maintenance during long-term use; at the same time, the telescopic lengths of the front and rear push rods are controlled respectively through the horizontal sensing results to adjust the verticality of the mast on the front side of the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a partial cross-sectional view of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic structural diagram of the angle adjustment mechanism of the present invention;

[0023] Figure 5 This is a cross-sectional view of the angle adjustment mechanism of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Mast; 2. Support arm; 21. Rotation slot; 3. First electric push rod; 31. First ball stud; 4. Ball seat; 5. Verticality detection mechanism; 51. First fixing bracket; 52. Second fixing bracket; 53. First verticality detector; 54. Second verticality detector; 6. Buffer mechanism; 61. Spring; 62. Universal joint transmission assembly; 621. First universal joint fork; 622. Universal cross shaft; 623. Second universal joint fork; 624. First limit block; 625. Second limit block; 63. Limit rod; 631. Slideway; 7. Angle adjustment mechanism; 71. Planetary gear; 7 11. Sun gear; 712. Ring gear; 713. Planetary gear; 72. Adjusting bracket; 721. First supporting bracket; 722. Second supporting bracket; 723. Second electric push rod; 724. Spherical inner cavity; 725. Third limiting block; 73. Connecting bracket; 731. Third electric push rod; 732. Second ball stud; 733. Arc-shaped limiting groove; 734. Drive shaft; 8. Drill rod; 9. Rotating mechanism; 10. Control room; 11. Running crawler; 12. Pulley frame; 13. Winch; 14. Wire rope; 15. Clamping mechanism; 151. Fourth electric push rod; 152. Clamping block. DETAILED DESCRIPTION

[0026] In order to make the contents of the present invention easier to understand, the technical solutions of the present invention are further described below in conjunction with specific implementation methods and drawings, but the present invention is not limited thereto.

[0027] See also Figure 1 、 Figure 2 and Figure 3The invention provides a technical solution: a vertical adjustment structure for a rotary drilling rig, comprising a mast 1 and a support arm 2, wherein the support arm 2 is formed by connecting two front and rear support plates with a support block, and the front and rear ends of the top of the support arm 2 are respectively hinged with a first electric push rod 3, and the mast 1 is adjusted according to the length of movement of the free ends of the two first electric push rods 3 before and after adjustment, and the first electric push rod 3 is used to improve the positioning accuracy of the drilling hole. Two ball seats 4 are fixedly and symmetrically provided on the right side of the mast 1, and a first ball pin 31 is provided at the other end of the first electric push rod 3, and the outer surface of the first ball pin 31 is slidably connected to the inner cavity of the ball seat 4, and the first ball pin 31 and the ball seat 4 form a ball joint. , so that the first electric push rod 3 and the mast 1 can rotate at any angle around the center of the first ball pin 31. The mast 1 is fixedly provided with a verticality detection mechanism 5, which is used to detect the verticality of the drill rod 8. A buffer mechanism 6 is connected between the support arm 2 and the mast 1. Angle adjustment mechanisms 7 with locking functions are respectively provided on the opposite sides of the lower end of the mast 1. The inner side of the angle adjustment mechanism 7 always fits the mast 1. The angle adjustment mechanism 7 includes mutually meshing planetary gears 71, an adjustment bracket 72 with adjustable spacing and a connecting bracket 73 that can rotate around the planetary gear 71. A clamping mechanism 15 for locking the mast 1 is provided at the bottom of the mast 1.

[0028] Combine Figure 4 The angle adjustment mechanism 7 includes two adjustment brackets 72 arranged in parallel above and below. The inner wall of the adjustment bracket 72 is always close to the outer wall of the mast 1. The adjustment bracket 72 includes a first support bracket 721 and a second support bracket 722. A second electric push rod 723 is connected between the first support bracket 721 and the second support bracket 722. The second electric push rod 723 can be adjusted to adapt to different sizes of the mast 1, thereby improving the applicability of the angle adjustment mechanism 7.

[0029] Combine Figure 5 The connecting bracket 73 is a U-shaped bracket, and a third electric push rod 731 is provided at either end of the connecting bracket 73. Second ball pins 732 are respectively provided at both ends of the connecting bracket 73, and an arc-shaped limiting groove 733 is provided on the outer circumference of the second ball pin 732. A spherical inner cavity 724 is provided on the outer side of the adjusting bracket 72, and a third limiting block 725 is provided in the spherical inner cavity 724. The second ball pins 732 on both sides are slidably connected to the spherical inner cavities 724 on the upper and lower sides of the adjusting bracket 72 under the limiting action of the third limiting block 725 and the arc-shaped limiting groove 733. The first support bracket 721 and the second support bracket 722 can both rotate within a certain range around the connected second ball pin 732.

[0030] Specifically, the planetary gear 71 includes a sun gear 711 and a ring gear 712, and a number of planetary gears 713 are meshed between the sun gear 711 and the ring gear 712. The sun gear 711 is connected to the output end of the motor, and the motor drives the sun gear 711 to rotate. The connecting bracket 73 is fixedly connected to the transmission shaft 734, and the ring gear 712 is fixedly connected to the transmission shaft 734, driving the adjustment bracket 72 and the connecting bracket 73 to rotate around the transmission shaft 734 at the same time, thereby adjusting the verticality of the mast 1. At the same time, under the deceleration action of the planetary gear 71, when the sun gear 711 rotates, the ring gear 712 drives the connecting bracket 73 to rotate slowly, which is convenient for adjusting the verticality of the mast 1.

[0031] Specifically, the buffer mechanism 6 includes a spring 61 and a universal joint transmission assembly 62. The universal joint transmission assembly 62 is symmetrically connected to the left side of the support arm 2. The output end of the universal joint transmission assembly 62 is fixedly connected to the spring 61, and the other end of the spring 61 is fixedly connected to the mast 1.

[0032] Specifically, the universal joint transmission assembly 62 includes a first universal joint fork 621, a universal cross shaft 622 and a second universal joint fork 623. The inner cavity of the first universal joint fork 621 is connected to the inner cavity of the second universal joint fork 623 through the universal cross shaft 622. The front and rear positions on the left side of the support arm 2 are respectively provided with a rotation groove 21 with an inclined axis. The rotation groove 21 is a stepped circular groove. The input end of the first universal joint fork 621 is provided with a circular first limit block 624. The outer surface of the first limit block 624 is slidably connected to the inner surface of the rotation groove 21. The first limit block 624 can rotate around the axis in the rotation groove 21.

[0033] Specifically, two limit rods 63 are symmetrically arranged on the front and back of the right side of the mast 1, a slide groove 631 is provided in the limit rod 63, and a second limit block 625 is provided at the output end of the second universal joint fork 623. The second limit block 625 is sleeved in the limit rod 63 through the slide groove 631 and is slidably connected with the slide groove 631. The annular protrusion on the edge of the slide groove 631 limits the moving distance of the second limit block 625. At the same time, the spring 61 is also sleeved in the limit rod 63. Under the action of the spring 61, the shaking speed of the mast 1 is slowed down to avoid large-scale movement of the mast 1 and collision.

[0034] Specifically, a drill rod 8 is arranged parallel to the left side of the mast 1, and a first fixing frame 51 and a second fixing frame 52 are fixedly connected on the upper and lower sides between the drill rod 8 and the mast 1 respectively. The first fixing frame 51 and the second fixing frame 52 are used to fix the first verticality detector 53 and the second verticality detector 54 respectively, and are also used to fix the positional relationship between the mast 1 and the drill rod 8.

[0035] Specifically, the verticality detection mechanism 5 includes a first verticality detector 53 and a second verticality detector 54. The first verticality detector 53 is located on the front side of the first fixing frame 51, and the second verticality detector 54 is located on the left side of the second fixing frame 52. The first verticality detector 53 is used to detect the verticality of the mast 1 on the front side, and at the same time outputs the detection result to the control motor for controlling the third electric push rod 731. By simultaneously extending and retracting the third electric push rods 731 on the angle adjustment mechanisms 7 on both sides, the angle adjustment mechanism 7 always clamps the mast 1, and the third limit block 725 and the arc limit groove 73 are adjusted. 3, the adjusting bracket 72 connected to the third electric push rod 731 on the angle adjustment mechanism 7 moves, and at the same time, the upper and lower adjusting brackets 72 respectively rotate around the connected second ball stud 732 until the first verticality detector 53 detects that the mast 1 is in a vertical state; the second verticality detector 54 is used to detect the verticality of the mast 1 on the left side, and at the same time, controls the motor controlling the sun gear 711 according to the detection result, and rotates the sun gear 711, thereby driving the ring gear 712 and the connecting bracket 73 to rotate until the second verticality detector 54 detects that the mast 1 is in a vertical state.

[0036] Specifically, the clamping mechanism 15 includes a fourth electric push rod 151, and a plurality of clamping blocks 152 are provided at the bottom of the fourth electric push rod 151. When the fourth electric push rod 151 is extended, the clamping blocks 152 can be extended into the ground and lock the mast 1 to prevent the drill rod 8 from being polarized during the downward rotation and cutting process, causing the drill bit to tilt and the hole to shift.

[0037] Specifically, the bottom end of the support arm 2 is fixedly connected to a slewing mechanism 9, and a control room 10 parallel to the support arm 2 is fixedly provided on the top of the slewing mechanism 9. The slewing mechanism 9 simultaneously drives the support arm 2 and the control room 10 to rotate to a suitable position. The front and rear sides of the slewing mechanism 9 are respectively connected to mutually parallel running crawlers 11, which are convenient for moving the rotary drilling rig. A pulley frame 12 is provided on the top of the mast 1, and a winch 13 is provided at the tail end of the control room 10. The winch 13 is wrapped with a wire rope 14. The wire rope 14 passes through the pulley frame 12 and the other end of the wire rope 14 is fixedly connected to the top of the drill pipe 8.

[0038] Working principle of the present invention:

[0039] When the running crawler 11 runs to a specific working position, the slewing mechanism 9 drives the control room 10 and the support arm 2 to rotate to a suitable position, and adjusts the telescopic distance of the first electric push rods 3 on both sides respectively, until the drill rod 8 moves to the vicinity of the drilling position, and the slewing mechanism 9 stops moving; at this time, the verticality of the mast 1 is detected by the first verticality detector 53, and the control motor of the third electric push rod 731 is controlled according to the detection result, and the third electric push rods 731 on the angle adjustment mechanisms 7 on both sides are simultaneously extended and retracted. Under the limiting action of the third limit block 725 and the arc-shaped limit groove 733, the adjustment bracket 72 connected to the third electric push rod 731 on the angle adjustment mechanism 7 is moved, and the upper and lower two The adjusting brackets 72 rotate around the connected second ball pins 732 until the first verticality detector 53 detects that the mast 1 is in a vertical state; the second verticality detector 54 is used to detect the verticality of the mast 1 on the left side, and at the same time, the motor controlling the sun gear 711 is controlled according to the detection result, and the sun gear 711 is rotated to drive the ring gear 712 and the connecting bracket 73 to rotate until the second verticality detector 54 detects that the mast 1 is in a vertical state; the fourth electric push rod 151 is stretched, and the clamping block 152 can be extended into the ground and lock the mast 1 to prevent the drill rod 8 from being polarized to a certain extent during the downward rotation and cutting process, causing the drill bit to tilt and the hole to shift.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vertical adjustment structure for a rotary drilling rig, characterized by: The utility model comprises a mast (1) and a support arm (2), wherein the front and rear ends of the top of the support arm (2) are respectively hinged with a first electric push rod (3), and the side of the mast (1) close to the support arm (2) is provided with two mutually symmetrical ball seats (4), and the other end of the first electric push rod (3) is provided with a first ball pin (31), and the outer surface of the first ball pin (31) is slidably connected with the inner cavity of the ball seat (4), and the mast (1) is fixedly provided with a verticality detection mechanism (5), and a buffer mechanism (6) is connected between the support arm (2) and the mast (1), and the lower end of the mast (1) is respectively provided with two opposite sides with locking functions. The invention relates to an angle adjustment mechanism (7) which comprises planetary gears (71) meshing with each other, an adjustment bracket (72) with adjustable spacing, and a connecting bracket (73) which can rotate around the planetary gears (71); a clamping mechanism (15) for locking the mast (1) is provided at the bottom of the mast (1); the connecting bracket (73) is a U-shaped bracket; a third electric push rod (731) is provided at either end of the connecting bracket (73); a second ball pin (732) is provided at each end of the connecting bracket (73); an arc-shaped limiting groove (733) is provided on the outer circumferential surface of the second ball pin (732). ), the outer side of the adjustment bracket (72) is provided with a spherical inner cavity (724), a third limiting block (725) is provided in the spherical inner cavity (724), and the second ball pin (732) is slidably connected to the spherical inner cavity (724) under the limiting action of the third limiting block (725) and the arc-shaped limiting groove (733); the buffer mechanism (6) includes a spring (61) and a universal joint transmission assembly (62), the left side of the support arm (2) is symmetrically connected to the universal joint transmission assembly (62), the output end of the universal joint transmission assembly (62) is fixedly connected to the spring (61), the spring ( 61) is fixedly connected to the mast (1); the universal joint transmission assembly (62) includes a first universal joint fork (621), a universal cross shaft (622) and a second universal joint fork (623), the inner cavity of the first universal joint fork (621) is transmission-connected to the inner cavity of the second universal joint fork (623) through the universal cross shaft (622), and a rotation groove (21) is respectively provided at the front and rear positions on the left side of the support arm (2), and a first limit block (624) is provided at the input end of the first universal joint fork (621), and the outer surface of the first limit block (624) is slidingly connected to the inner surface of the rotation groove (21).

2. The verticality adjustment structure for a rotary drilling rig according to claim 1, characterized in that: The angle adjustment mechanism (7) comprises two adjustment brackets (72) arranged in parallel up and down, the inner wall of the adjustment bracket (72) is in close contact with the outer wall of the mast (1), the adjustment bracket (72) comprises a first support bracket (721) and a second support bracket (722), and a second electric push rod (723) is connected between the first support bracket (721) and the second support bracket (722).

3. The verticality adjustment structure for a rotary drilling rig according to claim 1, characterized in that: The planetary gear (71) includes a sun gear (711) and a ring gear (712), a plurality of planetary gears (713) are meshed between the sun gear (711) and the ring gear (712), the sun gear (711) is connected to the output end of the motor, the connecting bracket (73) is fixedly connected to a transmission shaft (734), and the ring gear (712) is fixedly connected to the transmission shaft (734), driving the connecting bracket (73) to rotate around the transmission shaft (734).

4. The verticality adjustment structure for a rotary drilling rig according to claim 1, characterized in that: Two limiting rods (63) are symmetrically arranged on the right side of the mast (1) in front and back directions. A sliding groove (631) is arranged in the limiting rod (63). A second limiting block (625) is arranged at the output end of the second universal joint fork (623). The second limiting block (625) is sleeved in the limiting rod (63) through the sliding groove (631) and is slidably connected to the sliding groove (631).

5. The verticality adjustment structure for a rotary drilling rig according to claim 1, characterized in that: A drill rod (8) is arranged parallel to the left side of the mast (1); a first fixing frame (51) and a second fixing frame (52) are fixedly connected on upper and lower sides between the drill rod (8) and the mast (1); the verticality detection mechanism (5) comprises a first verticality detector (53) and a second verticality detector (54); the first verticality detector (53) is located on the front side of the first fixing frame (51), and the second verticality detector (54) is located on the left side of the second fixing frame (52).

6. The verticality adjustment structure for a rotary drilling rig according to claim 1, characterized in that: The clamping mechanism (15) comprises a fourth electric push rod (151), and a plurality of clamping blocks (152) are provided at the bottom of the fourth electric push rod (151).

7. The verticality adjustment structure for a rotary drilling rig according to claim 5, characterized in that: The bottom end of the support arm (2) is fixedly connected to a slewing mechanism (9), the top of the slewing mechanism (9) is fixedly provided with a control room (10) which is parallel to the support arm (2), the front and rear sides of the slewing mechanism (9) are respectively connected to running crawlers (11) which are parallel to each other, the top of the mast (1) is provided with a pulley frame (12), the tail end of the control room (10) is provided with a winch (13), the winch (13) is wound with a steel wire rope (14), the steel wire rope (14) passes through the pulley frame (12), and the other end of the steel wire rope (14) is fixedly connected to the top of the drill rod (8).

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