A drill pipe for advanced grouting

Abstract

The application relates to the technical field of grouting drill pipes, and discloses an advanced grouting drill pipe, which comprises a rod body, a stud is arranged at the top of the rod body, and a drill bit is fixedly installed at the bottom of the rod body. The advanced grouting drill pipe is provided with an extrusion assembly, a movable disc is driven to rotate in the inside of a fixed ring through manual operation of a control block, when the movable disc rotates, the movable disc surface is provided with an arc-shaped groove, the arc-shaped groove pulls a sliding rod, a fixed disc, a connecting rod, an extrusion block and an extrusion strip to move towards the center point close to the movable disc, when the extrusion strip moves, the extrusion strip abuts against the surface of the blockage in the inside of the rod body, so that the blockage is extruded and crushed, the rod body cannot be used again due to the blockage of the grouting channel by the solidified slurry, resource waste is reduced, construction cost is reduced, a large amount of time is not needed to spend on processing the blockage problem or waiting for a new drill pipe to be in place, the construction process can be smoothly pushed forward according to the plan, and the construction delay caused by the drill pipe fault is avoided.

Description

Technical Field

[0001] This invention relates to the field of grouting drill pipe technology, specifically to an advanced grouting drill pipe. Background Technology

[0002] With the continuous development of modern engineering construction, the scale and complexity of underground engineering projects (such as mining, tunnel excavation, and subway construction) are increasing. During the construction of these underground projects, it is often necessary to traverse various complex rock and soil environments. The inherent porosity, fissures, and instability of the rock and soil can easily trigger engineering disasters such as collapses, water inrushes, and mudslides, posing a serious threat to the lives of construction workers and the progress and quality of the project. To effectively address these potential risks, advanced support technology has emerged. Among these, advanced grouting, as an important advanced support method, injects grout into the rock and soil mass to fill its pores and fissures, enhancing the strength and stability of the rock and soil mass while playing a crucial role in water stoppage, thus creating relatively safe and reliable working conditions for subsequent underground engineering construction.

[0003] However, existing advanced grouting drill rods often experience blockages in the grouting channels due to the solidification of the injected grout inside the rod. These blockages are difficult to clear quickly, forcing construction to be interrupted each time. The construction team spends significant time dealing with the blockages or waiting for new drill rods to be procured and delivered, disrupting the continuity of the advanced grouting process and severely impacting the construction schedule. This prevents the project from progressing according to plan and may lead to a series of chain reactions, including project delays. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an advanced grouting drill rod, which solves the problem of grout solidifying inside the drill rod and causing blockage of the grouting channel.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an advanced grouting drill rod, comprising a rod body, a stud provided at the top of the rod body, and a drill bit fixedly installed at the bottom of the rod body; further comprising an extrusion assembly for extruding and crushing grout that has solidified inside the rod body; a moving assembly for clearing blockages in the rod body; and a movable assembly for striking and vibrating the blockage inside the rod body; the extrusion assembly comprises: a fixed ring fixedly installed at the top of the rod body, a movable disc rotatably connected to the inner side of the fixed ring, an arc-shaped groove on the surface of the movable disc, a sliding rod slidably connected to the inner side of the arc-shaped groove, a fixed disc fixedly installed on the surface of the sliding rod, the fixed disc fitting against the top of the movable disc, a connecting rod fixedly installed on the surface of the sliding rod, the connecting rod penetrating the movable disc, an extrusion block fixedly installed on the surface of the connecting rod, and an extrusion strip fixedly installed on the surface of the extrusion block.

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

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

[0008] Preferably, the turntable surface is provided with a star-shaped groove, a sliding rod 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, and a second sliding rod is fixedly installed on the top of the movable block.

[0009] Preferably, a connecting block is fixedly installed on the inner side of the retaining ring, a sliding groove is formed on the surface of the connecting block, the sliding rod is slidably connected inside the connecting block, a moving rod passes through the surface of the movable block, and an abutment plate is fixedly installed at the bottom of the moving rod.

[0010] Preferably, the movable component includes: a long rod, which is fixedly installed on the top of the turntable, a rotating shaft is fixedly installed on the surface of the long rod, a stud is rotatably connected to the top of the rotating shaft, a reciprocating groove is provided inside the rotating shaft, and a telescopic rod is slidably connected to the inner side 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 inside the connecting column, and a striking plate is fixedly installed on the top of the movable rod.

[0012] Preferably, a return spring is fixedly installed on the surface of 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.

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

[0015] Compared with the prior art, the present invention provides an advanced grouting drill rod, which has the following beneficial effects: 1. This advanced grouting drill rod utilizes an extrusion assembly. A manually operated control block drives a movable disc to rotate within a fixed ring. As the movable disc rotates, it pulls the sliding rod, fixed disc, connecting rod, extrusion block, and extrusion strip towards the center of the movable disc via an arc-shaped groove on its surface. When the extrusion strip moves, it presses against the surface of any blockages inside the rod, crushing and breaking them up. This prevents the rod from becoming unusable due to blockages in the grouting channel caused by solidified grout, reducing resource waste and construction costs. It eliminates the need to spend significant time dealing with blockages or waiting for new drill rods, ensuring the construction process proceeds smoothly as planned and avoiding delays caused by drill rod malfunctions.

[0016] 2. This advanced grouting drill rod utilizes a movable component. When the movable disc rotates, it also drives the turntable to rotate inside the retaining ring via a fixed rod. As the turntable rotates, it abuts against a sliding rod, moving it closer to the center point of the turntable. When the sliding rod moves, it causes the movable block at the top of the sliding rod to swing closer to the center point of the turntable. When the movable block swings, it also causes the movable rod to move in the same direction as the swinging block. When the shaft rotates, it causes the telescopic rod to move downwards. When the telescopic rod moves downwards, it causes the movable rod to abut against the top of the blockage and push it, preventing any blockage that might have been crushed by squeezing from remaining in the grouting channel. This improves the grouting effect, extends the service life of the drill rod, and increases construction efficiency.

[0017] 3. This advanced grouting drill rod utilizes a movable component. When the contact plate abuts against the top of the blockage, the moving rod slides upward on the inner wall of the connecting column, stretching the return spring connecting the moving rod and the connecting column. When the telescopic rod moves upward, it also drives the striking plate upward. When the telescopic rod moves upward, it releases the contact plate from the blockage, allowing the moving rod to return to its original position under the action of the return spring. Simultaneously, the striking plate quickly returns to its original position and strikes the top of the connecting column. The vibration generated by the striking plate on the connecting column causes the rod body to vibrate, thus preventing the blockage from sticking firmly and preventing partial blockage from being missed, enhancing the unblocking effect and ensuring the performance of the drill rod. Attached Figure Description

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

[0019] In the diagram: 1. Rod; 2. Stud; 3. Drill bit; 4. Extrusion assembly; 41. Fixed ring; 42. Movable disc; 43. Arc groove; 44. Slide rod; 45. Fixed disc; 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. Slide rod one; 56. Movable block; 57. Slide rod two; 58. Connecting block; 59. Slide groove; 510. Moving rod; 511. Abutment disc; 6. Moving assembly; 61. Long rod; 62. Rotating shaft; 63. Reciprocating slide groove; 64. Telescopic rod; 65. Connecting column; 66. Striking disc; 67. Return spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-7 As shown, an advanced grouting drill rod includes a rod body 1, a stud 2 is provided at the top of the rod body 1, and a drill bit 3 is fixedly installed at the bottom of the rod body 1; It also includes an extrusion assembly 4, used to extrude and crush the slurry that has solidified inside the rod body 1; The movable component 5 is used to clear the blockage in the rod 1; The active component 6 is used to tap and vibrate the inside of the blocked rod 1; First, the extrusion assembly 4 includes: a fixed ring 41, which is fixedly installed on the top of the rod 1; a movable disk 42 is rotatably connected to the inner side of the fixed ring 41; an arc-shaped groove 43 is formed on the surface of the movable disk 42; a slide rod 44 is slidably connected to the inner side of the arc-shaped groove 43; a fixed disk 45 is fixedly installed on the surface of the slide rod 44, and the fixed disk 45 fits against the top of the movable disk 42; a connecting rod 46 is fixedly installed 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 installed on the surface of the connecting rod 46; and an extrusion block 47 is fixedly installed on the surface of the extrusion block 47. The pressure bar 48 can pressurize the blockage by using multiple sets of triangular pressure bars 48 set on the surface of the pressure block 47. The shape of the triangular pressure bar 48 makes the pressure at the contact point relatively greater when it applies pressure to the blockage, which can more easily cut into the interior of the blockage. Like a series of "sharp blades", it gradually decomposes and breaks the blockage into smaller pieces. Compared with a planar extrusion structure, it is more helpful to quickly destroy the original integrity of the blockage, improve the crushing efficiency, and make the originally tight and stubborn blockage easier to process further.

[0022] Secondly, a strip groove 49 is provided 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 control block 410 can be driven to slide inside the fixed ring 41 through the strip groove 49 provided on the surface of the fixed ring 41.

[0023] Furthermore, the movable component 5 includes: a fixed rod 51, one end of which is fixedly installed on the top of the movable disk 42, and a turntable 52 fixedly installed on the other end of the fixed rod 51. A retaining ring 53 is provided on the surface of the turntable 52, and the retaining ring 53 is fixedly installed on the top of the fixed ring 41. The turntable 52 is rotatably connected to the inner side of the retaining ring 53. A star-shaped groove 54 is opened 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. A sliding rod 57 is fixedly installed on the top of the movable block 56. A connecting block 58 is fixedly installed on the inner side of the retaining ring 53. A sliding groove 59 is opened 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. An abutment disk 511 is fixedly installed at the bottom of the moving rod 510. The sliding rod 57 can be driven to slide inside the connecting block 58 through the sliding groove 59 opened on the surface of the connecting block 58.

[0024] Furthermore, the active 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. A stud 2 is rotatably connected to the top of the rotating shaft 62. A reciprocating groove 63 is opened inside the rotating shaft 62. A telescopic rod 64 is slidably connected to the inside of the reciprocating groove 63. A connecting post 65 is fixedly installed inside the telescopic rod 64. A moving rod 510 is slidably connected inside the connecting post 65. A striking plate 66 is fixedly installed on the top of the moving rod 510. The telescopic rod 64 can be driven to slide up and down reciprocally when the rotating shaft 62 rotates through the reciprocating groove 63 opened inside the rotating shaft 62.

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

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

[0027] Working principle: When the pre-grouting drill rod is used, it can be connected to the drilling rig through the stud 2 on its surface. After the drilling rig starts, it drives the rod body 1 and drill bit 3 to rotate and advance, continuously penetrating deeper 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 delivers the prepared grout into the rod body 1 for use. After use, the grout injected into the rod body 1 solidifies, causing blockage of the grouting channel. The movable disc 42 is driven to rotate inside the fixed ring 41 by manually operating the control block 410. When the movable disc 42 rotates, it pulls the sliding rod 44 and the fixed disc 45 closer to the center point of the movable disc 42 through the arc groove 43 on the surface of the movable disc 42. The movement of the sliding rod 44 causes the connecting rod 46 to move, which in turn causes the extrusion block 47 and extrusion strip 48 to move. When the extrusion strip 48 moves, it comes into contact with the surface of the blockage inside the rod 1, thus crushing and extruding it. This prevents the rod 1 from becoming unusable due to the blockage of the grouting channel by solidified grout, reducing resource waste, lowering construction costs, avoiding frequent replacement of new drill rods, and improving the efficiency and economy of drill rod use. When it is necessary to continue advanced grouting construction, the grouting function of the drill rod can be quickly restored without spending a lot of time dealing with blockages or waiting for new drill rods to arrive. This ensures that the construction process can proceed smoothly as planned and avoids construction delays caused by drill rod failure.

[0028] When the movable disk 42 rotates, it also drives the turntable 52 to rotate inside the retaining ring 53 via the fixed rod 51. When the turntable 52 rotates, it moves closer to the center point of the turntable 52 by abutting the sliding rod 55 through the star-shaped groove 54 on the surface of the turntable 52. When the sliding rod 55 moves, it drives the movable block 56 at the top of the sliding rod 55 to swing closer to the center point of the turntable 52. When the movable block 56 swings, it drives the sliding rod 57 to slide at the groove 59 on the surface of the connecting block 58. When the movable block 56 swings, it also drives the moving rod 510 to move in the same direction as the swing of the movable block 56, and when the movable disk 42 rotates, it drives the sliding rod 510 to move. The rotation of the shaft 62 causes the telescopic rod 64 to move downwards via the reciprocating groove 63 inside. When the telescopic rod 64 moves downwards, it causes the moving rod 510 and the connecting column 65 to move downwards. This causes the contact plate 511 at the bottom of the moving rod 510 to abut against the top of the blockage and push it. This prevents some of the blockage that may have been crushed by squeezing from remaining in the grouting channel, which would prevent the grouting channel from being fully restored to its original state. This further ensures that the blockage in the channel can be effectively treated and cleaned as much as possible, improving the grouting effect, extending the service life of the drill rod, and improving construction efficiency.

[0029] When the moving rod 510 abuts against the top of the blockage, it slides upward on the inner wall of the connecting post 65, stretching the return spring 67 connecting the moving rod 510 and the connecting post 65. Since the rotating shaft 62 has a reciprocating groove 63 inside, when the telescopic rod 64 moves to the bottom of the rotating shaft 62, it will drive the telescopic rod 64 to move upward while the rotating shaft 62 continues to rotate. When the telescopic rod 64 moves upward, it will also drive the striking plate 66 to move upward. When the telescopic rod 64 moves upward, it will release the contact plate 511 from the blockage, so that the moving rod 510 will be reset under the action of the return spring 67. At the same time, the striking plate 66 will quickly return to its position and strike the top of the connecting post 65. The rapid striking of the connecting post 65 and the striking plate 66 will generate vibration, which can cause the rod body 1 to vibrate, thereby preventing the blockage from sticking firmly and preventing partial blockage from being missed, enhancing the unblocking 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" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A pre-grouting drill rod, comprising a rod body (1), characterized in that: A stud (2) is provided at the top of the rod (1), and a drill bit (3) is fixedly installed at the bottom of the rod (1). It also includes an extrusion assembly (4) for extruding and crushing the slurry that has solidified inside the rod (1); The movable component (5) is used to clear the blockage in the rod (1); The active component (6) is used to tap and vibrate the inside of the blocked rod (1); The extrusion assembly (4) includes: a fixed ring (41), which is fixedly installed on the top of the rod (1). A movable disc (42) is rotatably connected to the inner side of the fixed ring (41). An arc-shaped groove (43) is formed on the surface of the movable disc (42). A slide rod (44) is slidably connected to the inner side of the arc-shaped groove (43). A fixed disc (45) is fixedly installed on the surface of the slide rod (44). The fixed disc (45) fits against the top of the movable disc (42). A connecting rod (46) is fixedly installed on the surface of the slide rod (44). The connecting rod (46) passes through the movable disc (42). An extrusion block (47) is fixedly installed on the surface of the connecting rod (46), and an extrusion strip (48) is fixedly installed on the surface of the extrusion block (47). A strip groove (49) is opened on the surface of the fixing ring (41), and a control block (410) is slidably connected to the inside of the strip groove (49). The control block (410) is fixedly installed on the surface of the movable disk (42). The moving component (5) includes: a fixing rod (51), one end of which is fixedly installed on the top of the movable disk (42), and the other end of which is fixedly installed on a turntable (52). The surface of the turntable (52) is provided with A retaining ring (53) is provided, which is fixedly installed on the top of the fixed ring (41). The turntable (52) is rotatably connected to the inner side of the retaining ring (53). A star-shaped groove (54) is opened 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). A sliding rod (57) is fixedly installed on the top of the movable block (56). A connecting block (58) is fixedly installed on the inner side of the retaining ring (53). A sliding groove (59) is opened on the surface of the connecting block (58). The sliding rod (57) is... (57) Sliding connection inside the connecting block (58), the movable block (56) has a moving rod (510) penetrating through its surface, and a contact plate (511) is fixedly installed at the bottom of the moving rod (510). The movable component (6) includes: a long rod (61), the long rod (61) is fixedly installed on the top of the turntable (52), and 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 inside the reciprocating groove (63).

2. The advanced grouting drill rod according to claim 1, characterized in that: A connecting column (65) is fixedly installed on the inner side of the telescopic rod (64), and the movable rod (510) is slidably connected inside the connecting column (65). A striking plate (66) is fixedly installed on the top of the movable rod (510).

3. The advanced grouting drill rod according to claim 1, characterized in that: A return spring (67) is fixedly installed on the surface of the moving rod (510).

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

5. The advanced grouting drill rod according to claim 1, 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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