Advanced grouting drill rod

Abstract

The invention relates to the technical field of grouting drill rods, and discloses an advanced grouting drill rod which comprises a rod body, a stud is arranged at the top of the rod body, and a drill bit is fixedly mounted at the bottom of the rod body. When a movable disc rotates, a sliding rod, a fixed disc, a connecting rod, an extrusion block and an extrusion strip are pulled through an arc-shaped groove formed in the surface of the movable disc to move towards the center point close to the movable disc, and when the extrusion strip moves, the extrusion strip abuts against the surface of blockages in a rod body, so that the blockages are extruded and crushed; the situation that the rod body cannot be used again due to the fact that the grouting channel is blocked by solidified grout is prevented, resource waste is reduced, construction cost is reduced, a large amount of time is not needed to deal with the blocking problem or wait for a new drill rod to be in place, it is guaranteed that the construction process can be smoothly carried out according to plans, and the construction delay situation caused by drill rod faults is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of grouting drill rods, in particular to an advanced grouting drill rod. Background Art

[0002] With the continuous development of modern engineering construction, the scale and complexity of underground projects (such as mining, tunneling, and subway construction) are increasing. During the construction of these underground projects, they often need to traverse various complex rock and soil environments. The pores, cracks, and insufficient stability of the rock and soil itself can easily lead to engineering disasters such as collapse, water inrush, and mud bursts, posing a serious threat to the safety of construction workers, as well as the progress and quality of the project. To effectively address these potential risks, advanced support technology has emerged. Advanced grouting, as an important advanced support method, injects grout into the rock and soil to fill its pores and cracks, enhancing its strength and stability while also playing a key role in stopping water, thereby creating relatively safe and reliable working conditions for subsequent underground engineering construction.

[0003] However, existing pre-grouting drill pipes often experience blockages in the grouting channel due to the solidification of the injected slurry inside the drill pipe. Blockages in the drill pipe grouting channel are difficult to clear quickly, and each such situation requires the construction process to be interrupted. The construction team must spend a considerable amount of time troubleshooting the drill pipe blockage or waiting for the procurement and delivery of new drill pipes. This disrupts the continuity of the pre-grouting work, severely impacting the construction progress and preventing the project from proceeding as planned, potentially leading to a series of other problems such as construction delays. Summary of the Invention

[0004] Technical problems solved In view of the deficiencies of the prior art, the present invention provides an advanced grouting drill rod, which solves the problem that the injected slurry solidifies inside the drill rod and causes blockage of the grouting channel.

[0005] (2) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an advance grouting drill rod, comprising a rod body, a stud is provided at the top of the rod body, and a drill bit is fixedly installed at the bottom of the rod body; it also includes an extrusion assembly for squeezing and crushing the solidified slurry blocked inside the rod body; a moving assembly for clearing the blocked rod body; a movable assembly for knocking and generating vibration inside the blocked rod body; the extrusion assembly includes: a fixed ring, which is fixedly installed on the top of the rod body, a movable disk is rotatably connected to the inner side of the fixed ring, an arc groove is provided on the surface of the movable disk, a sliding rod is slidably connected to the inner side of the arc groove, a fixed disk is fixedly installed on the surface of the sliding rod, the fixed disk is attached to the top of the movable disk, a connecting rod is fixedly installed on the surface of the sliding rod, the connecting rod passes through the movable disk, an extrusion block is fixedly installed on the surface of the connecting rod, and an extrusion bar is fixedly installed on the surface of the extrusion block.

[0006] Preferably, a strip groove is provided on the surface of the fixed ring, a control block is slidably connected to the inner side of the strip groove, and the control block is fixedly mounted on the surface of the movable disk.

[0007] Preferably, the moving component includes: a fixed rod, one end of which is fixedly mounted on the top of the movable disk, and a turntable is fixedly mounted on the other end of the fixed rod, a retaining ring is provided on the surface of the turntable, the retaining ring is fixedly mounted on the top of the fixed ring, and the turntable is rotatably connected to the inner side of the retaining ring.

[0008] Preferably, a star-shaped groove is provided on the surface of the turntable, a sliding rod 1 is slidably connected to the inner side of the star-shaped groove, a movable block is fixedly installed on the top of the sliding rod 1, and a sliding rod 2 is fixedly installed on the top of the movable block.

[0009] Preferably, a connecting block is fixedly installed on the inner side of the clamping ring, a sliding groove is provided on the surface of the connecting block, the sliding rod 2 is slidably connected to the inside of the connecting block, a moving rod passes through the surface of the movable block, and a contact plate is fixedly installed on the bottom of the moving rod.

[0010] Preferably, the movable component includes: a long rod, the long rod is fixedly mounted on the top of the turntable, a rotating shaft is fixedly mounted on the surface of the long rod, the stud is rotatably connected to the top of the rotating shaft, a reciprocating groove is opened inside the rotating shaft, and a telescopic rod is slidably connected to the inside of the reciprocating groove.

[0011] Preferably, a connecting column is fixedly installed on the inner side of the telescopic rod, the movable rod is slidably connected to the inside of the connecting column, and a knocking plate is fixedly installed on the top of the movable rod.

[0012] Preferably, a return spring is fixedly mounted on the surface of the moving rod, and the return spring is fixedly mounted inside the moving rod.

[0013] Preferably, there are three extrusion blocks, and the three extrusion blocks are arranged in a circular array with the center point of the movable disk as the center of the circle.

[0014] Preferably, the cross-section of the extrusion strip is triangular, and the cross-section of the movable block is rectangular.

[0015] (3) Beneficial effects Compared with the prior art, the present invention provides an advanced grouting drill rod, which has the following beneficial effects: 1. The advance grouting drill rod utilizes the setting of the extrusion assembly and drives the movable disk to rotate inside the fixed ring through the manual operation control block. When the movable disk rotates, the sliding rod, fixed disk, connecting rod, extrusion block and extrusion bar are pulled toward the center point of the movable disk through the arc groove opened on the surface of the movable disk. When the extrusion bar moves, it will resist the surface of the blockage inside the rod body, thereby squeezing and crushing it, preventing the rod body from being unable to be reused due to the grouting channel being blocked by solidified slurry, reducing resource waste and construction costs. There is no need to spend a lot of time dealing with blockage problems or waiting for new drill rods to be in place, ensuring that the construction process can proceed smoothly as planned and avoiding construction delays caused by drill rod failures.

[0016] 2. The advance grouting drill rod utilizes the setting of the moving component. When the movable disk rotates, it will also drive the turntable to rotate inside the clamping ring through the fixed rod. When the turntable rotates, it will resist the sliding rod and move closer to the center point of the turntable. When the sliding rod moves, it will drive the movable block on the top of the sliding rod to swing closer to the center point of the turntable. When the movable block swings, it will also drive the moving rod to move in the same direction as the swinging of the movable block. When the rotating shaft rotates, it will drive the telescopic rod to move downward. When the telescopic rod moves downward, it will drive the moving rod to resist the top of the blockage and push it, preventing some blockages that may appear due to squeezing and crushing from remaining in the grouting channel, thereby improving and optimizing the grouting effect, extending the service life of the drill rod, and improving construction efficiency.

[0017] 3. The advance grouting drill rod is set up with a movable component. When the resistance plate hits the top of the blockage, the moving rod will slide upward on the inner wall of the connecting column and stretch the reset spring connected between the moving rod and the connecting column. When the telescopic rod moves upward, it will also drive the knocking plate to move upward. When the telescopic rod moves upward, the resistance of the resistance plate to the blockage is released, so that the moving rod is reset under the action of the reset spring, and at the same time, the knocking plate quickly returns to its position and knocks on the top of the connecting column. The rapid knocking of the connecting column by the knocking plate generates vibration, which can cause the rod body to vibrate, thereby preventing the blockage from sticking firmly and local blockages from being missed, enhancing the dredging effect and ensuring the performance of the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the front view structure of an advanced grouting drill rod proposed by the present invention; Figure 2 This is a side view structural diagram of an advanced grouting drill rod proposed by the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of an advanced grouting drill rod proposed by the present invention; Figure 4 This is a front view structural diagram of an advanced grouting drill rod extrusion assembly proposed by the present invention; Figure 5 This is a front view structural diagram of an advanced grouting drill rod moving assembly proposed by the present invention; Figure 6 This is a front view structural diagram of an advanced grouting drill rod movable assembly proposed by the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of an advanced grouting drill rod connection column proposed by the present invention.

[0019] In the figure: 1. Rod body; 2. Stud; 3. Drill bit; 4. Extrusion assembly; 41. Fixed ring; 42. Movable disk; 43. Arc groove; 44. Sliding rod; 45. Fixed disk; 46. Connecting rod; 47. Extrusion block; 48. Extrusion strip; 49. Strip groove; 410. Control block; 5. Moving assembly; 51. Fixed rod; 52. Turntable; 53. Snap ring; 54. Star groove; 55. Sliding rod 1; 56. Movable block; 57. Sliding rod 2; 58. Connecting block; 59. Slide groove; 510. Moving rod; 511. Contact disk; 6. Movable assembly; 61. Long rod; 62. Rotating shaft; 63. Reciprocating slide groove; 64. Telescopic rod; 65. Connecting column; 66. Knocking disk; 67. Return spring DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7 As shown, an advanced grouting drill rod comprises a rod body 1, a stud 2 is provided on the top of the rod body 1, and a drill bit 3 is fixedly installed on the bottom of the rod body 1; It also includes an extrusion assembly 4 for squeezing and crushing the solidified slurry that is blocked inside the rod body 1; The moving component 5 is used to dredge the blocked rod body 1; The movable component 6 is used to knock the blocked interior of the rod body 1 and generate vibration; First, the extrusion assembly 4 includes: a fixed ring 41, which is fixedly mounted on the top of the rod body 1, and a movable disk 42 is rotatably connected to the inner side of the fixed ring 41. An arc groove 43 is provided on the surface of the movable disk 42, and a slide rod 44 is slidably connected to the inner side of the arc groove 43. A fixed disk 45 is fixedly mounted on the surface of the slide rod 44, and the fixed disk 45 is attached to the top of the movable disk 42. A connecting rod 46 is fixedly mounted on the surface of the slide rod 44, and the connecting rod 46 passes through the movable disk 42. An extrusion block 47 is fixedly mounted on the surface of the connecting rod 46, and an extrusion block 47 is fixedly mounted on the surface of the extrusion block The pressure strips 48 can apply pressure to the blockage through multiple groups of triangular extrusion strips 48 arranged on the surface of the extrusion block 47. The shape characteristics of the triangular extrusion strips 48 make the pressure at the contact point relatively greater when applying pressure to the blockage, and can more easily cut into the interior of the blockage, like a "sharp blade", gradually decomposing and breaking the blockage into smaller pieces. Compared with the planar extrusion structure, it is more helpful to quickly destroy the original integrity of the blockage, improve the crushing efficiency, and make the originally relatively tight and stubborn blockage easier to further process.

[0022] Secondly, a strip groove 49 is opened on the surface of the fixed ring 41, and a control block 410 is slidably connected to the inner side of the strip groove 49. The control block 410 is fixedly installed on the surface of the movable disk 42. The strip groove 49 opened on the surface of the fixed ring 41 can drive the control block 410 to slide on the inner side of the fixed ring 41.

[0023] The movable assembly 5 comprises a fixed rod 51, one end of which is fixedly mounted on the top of the movable disk 42, and a rotating disk 52 is fixedly mounted on the other end of the fixed rod 51. A snap ring 53 is provided on the surface of the rotating disk 52, and the snap ring 53 is fixedly mounted on the top of the fixed ring 41. The rotating disk 52 is rotatably connected to the inner side of the snap ring 53. A star-shaped groove 54 is provided on the surface of the rotating disk 52, and a sliding rod 1 55 is slidably connected to the inner side of the star groove 54. A movable block 56 is fixedly mounted on the top of the sliding rod 1 55, and a sliding rod 2 57 is fixedly mounted on the top of the movable block 56. A connecting block 58 is fixedly mounted on the inside of the snap ring 53, and a sliding groove 59 is provided on the surface of the connecting block 58. The sliding rod 2 57 is slidably connected to the inside of the connecting block 58. A moving rod 510 passes through the surface of the movable block 56, and a resistance disk 511 is fixedly mounted on the bottom of the moving rod 510, which can drive the sliding rod 2 57 to slide on the inner side of the connecting block 58 through the sliding groove 59 provided on the surface of the connecting block 58.

[0024] Furthermore, the movable component 6 includes: a long rod 61, which is fixedly installed on the top of the turntable 52, a rotating shaft 62 is fixedly installed on the surface of the long rod 61, the stud 2 is rotatably connected to the top of the rotating shaft 62, a reciprocating groove 63 is opened inside the rotating shaft 62, and a telescopic rod 64 is slidably connected to the inner side of the reciprocating groove 63, a connecting column 65 is fixedly installed on the inner side of the telescopic rod 64, a moving rod 510 is slidably connected to the inside of the connecting column 65, and a knocking plate 66 is fixedly installed on the top of the moving rod 510, which can be driven by the reciprocating groove 63 opened inside the rotating shaft 62 to drive the telescopic rod 64 to slide back and forth when the rotating shaft 62 rotates.

[0025] Furthermore, a return spring 67 is fixedly installed on the surface of the moving rod 510, and the return spring 67 is fixedly installed inside the moving rod 510. The return spring 67 set on the surface of the moving rod 510 can achieve the effect of returning the moving rod 510 after the moving rod 510 releases the resistance to the blockage.

[0026] Finally, there are three extrusion blocks 47, and the three extrusion blocks 47 are arranged in a circular array with the center point of the movable disk 42 as the center of the circle. The cross-section of the extrusion bar 48 is triangular, and the triangular extrusion bar 48 can be used to achieve an extrusion effect on the blockage. The cross-section of the movable block 56 is rectangular, and the rectangular movable block 56 can be used to improve the connection effect with the movable rod 510.

[0027] Working principle: when the advance grouting drill rod is used, it can be connected to the drilling rig through the stud 2 on the surface, and after the drilling rig is started, it drives the rod body 1 and the drill bit 3 to rotate, rotate and advance, and continuously penetrate into the rock and soil. When the borehole reaches the designed depth, the rod body 1 becomes an important channel for grouting. The grouting equipment transports the configured slurry to the inside of the rod body 1 for use. After use, the slurry poured into the inside of the rod body 1 solidifies and causes the grouting channel of the rod body 1 to be blocked. The manual operation control block 410 is used to drive the movable disk 42 to rotate inside the fixed ring 41. When the movable disk 42 rotates, the arc groove 43 opened on the surface of the movable disk 42 will pull the sliding rod 44 and the fixed disk 45 to the center point close to the movable disk 42. When the sliding rod 44 moves, it will drive the movement of the connecting rod 46. When the connecting rod 46 moves, it will drive the movement of the squeezing block 47 and the squeezing strip 48. When the squeezing strip 48 moves, it will resist the surface of the blockage inside the rod body 1, thereby squeezing and crushing it, preventing the rod body 1 from being unable to be used again due to the clogging of the grouting channel by the solidified slurry, reducing resource waste, reducing construction costs, avoiding frequent replacement of new drill rods, and improving the efficiency and economy of the use of drill rods. When it is necessary to continue the advance grouting construction in the future, the grouting function of the drill rod can be quickly restored, without spending a lot of time dealing with the blockage problem or waiting for the new drill rod to be in place, ensuring that the construction process can proceed smoothly as planned, and avoiding construction delays caused by drill rod failures.

[0028] When the movable disk 42 rotates, it will also drive the rotating disk 52 to rotate inside the retaining ring 53 through the fixed rod 51. When the rotating disk 52 rotates, it will contact the sliding rod 1 55 through the star-shaped groove 54 opened on the surface of the rotating disk 52 and move toward the center point of the rotating disk 52. When the sliding rod 1 55 moves, it will drive the movable block 56 on the top of the sliding rod 1 55 to swing toward the center point of the rotating disk 52. When the movable block 56 swings, it will drive the sliding rod 2 57 to slide in the sliding groove 59 opened on the surface of the connecting block 58. When the movable block 56 swings, it will also drive the moving rod 510 to move in the same direction as the swinging direction of the movable block 56, and drive the movable disk 42 to rotate. The rotation of the rotating shaft 62 will drive the telescopic rod 64 to move downward through the reciprocating slide 63 provided inside it. When the telescopic rod 64 moves downward, it will drive the moving rod 510 and the connecting column 65 to move downward, so that the contact plate 511 at the bottom of the moving rod 510 contacts the top of the blockage and pushes it, preventing some of the blockage that may occur due to squeezing and crushing from remaining in the grouting channel, resulting in the grouting channel not being able to be completely restored to normal flow, further ensuring that the blockage in the channel can be effectively handled and cleared as much as possible, thereby improving and optimizing the grouting effect, extending the service life of the drill rod, and improving construction efficiency.

[0029] When the moving rod 510 hits the top of the blockage, the moving rod 510 will slide upward on the inner wall of the connecting column 65 and stretch the return spring 67 connected between the moving rod 510 and the connecting column 65. Since a reciprocating groove 63 is provided inside the rotating shaft 62, when the telescopic rod 64 moves to the bottom end of the rotating shaft 62, the telescopic rod 64 will be driven to move upward while the rotating shaft 62 continues to rotate. When the telescopic rod 64 moves upward, it will also drive the knocking plate 66 to move upward. When the telescopic rod 64 moves upward, the resistance of the contact plate 511 to the blockage is released, so that the moving rod 510 is reset under the action of the return spring 67, and at the same time, the knocking plate 66 is quickly returned to its position and knocked on the top of the connecting column 65. The rapid knocking of the knocking plate 66 by the connecting column 65 generates vibration, which can cause the rod body 1 to vibrate, thereby preventing the blockage from sticking firmly and local blockages from being missed, enhancing the dredging effect and ensuring the performance of the drill rod.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A pre-grouting drill rod, comprising a rod body (1), characterized in that: A stud (2) is provided on the top of the rod body (1), and a drill bit (3) is fixedly mounted on the bottom of the rod body (1); It also includes an extrusion assembly (4) for extruding and crushing the solidified slurry that is blocked inside the rod body (1); A moving assembly (5) for clearing the blocked rod (1); A movable component (6) is used to knock the blocked interior of the rod body (1) and generate vibration; The extrusion assembly (4) comprises: a fixed ring (41), the fixed ring (41) is fixedly mounted on the top of the rod body (1), a movable disk (42) is rotatably connected to the inner side of the fixed ring (41), an arc groove (43) is provided on the surface of the movable disk (42), a slide rod (44) is slidably connected to the inner side of the arc groove (43), a fixed disk (45) is fixedly mounted on the surface of the slide rod (44), the fixed disk (45) is attached to the top of the movable disk (42), a connecting rod (46) is fixedly mounted on the surface of the slide rod (44), the connecting rod (46) passes through the movable disk (42), an extrusion block (47) is fixedly mounted on the surface of the connecting rod (46), and an extrusion strip (48) is fixedly mounted on the surface of the extrusion block (47).

2. The advance grouting drill rod according to claim 1, characterized in that: A strip groove (49) is provided on the surface of the fixed ring (41), and a control block (410) is slidably connected inside the strip groove (49), and the control block (410) is fixedly mounted on the surface of the movable disk (42).

3. The advanced grouting drill rod according to claim 1, characterized in that: The moving assembly (5) comprises a fixed rod (51), one end of which is fixedly mounted on the top of the movable disk (42), and a turntable (52) is fixedly mounted on the other end of the fixed rod (51), a retaining ring (53) is provided on the surface of the turntable (52), the retaining ring (53) is fixedly mounted on the top of the fixed ring (41), and the turntable (52) is rotatably connected to the inner side of the retaining ring (53).

4. The advanced grouting drill rod according to claim 3, characterized in that: A star-shaped groove (54) is provided on the surface of the turntable (52), a sliding rod (55) is slidably connected to the inner side of the star-shaped groove (54), a movable block (56) is fixedly installed on the top of the sliding rod (55), and a sliding rod (57) is fixedly installed on the top of the movable block (56).

5. The advanced grouting drill rod according to claim 4, characterized in that: A connecting block (58) is fixedly installed on the inner side of the clamping ring (53), a sliding groove (59) is provided on the surface of the connecting block (58), the sliding rod (57) is slidably connected to the inside of the connecting block (58), a moving rod (510) passes through the surface of the movable block (56), and a contact plate (511) is fixedly installed on the bottom of the moving rod (510).

6. The advanced grouting drill rod according to claim 5, characterized in that: The movable assembly (6) comprises a long rod (61), the long rod (61) being fixedly mounted on the top of the turntable (52), a rotating shaft (62) being fixedly mounted on the surface of the long rod (61), the stud (2) being rotatably connected to the top of the rotating shaft (62), a reciprocating groove (63) being provided inside the rotating shaft (62), and a telescopic rod (64) being slidably connected inside the reciprocating groove (63).

7. The advanced grouting drill rod according to claim 6, characterized in that: A connecting column (65) is fixedly mounted on the inner side of the telescopic rod (64), the moving rod (510) is slidably connected to the inside of the connecting column (65), and a knocking plate (66) is fixedly mounted on the top of the moving rod (510).

8. The advanced grouting drill rod according to claim 5, characterized in that: A return spring (67) is fixedly mounted on the surface of the moving rod (510), and the return spring (67) is fixedly mounted inside the moving rod (510).

9. The advanced grouting drill rod according to claim 1, characterized in that: Three extrusion blocks (47) are provided, and the three extrusion blocks (47) are arranged in a circular array with the center point of the movable disk (42) as the center of the circle.

10. The advanced grouting drill rod according to claim 4, characterized in that: The cross section of the extrusion strip (48) is triangular, and the cross section of the movable block (56) is rectangular.

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