A high-pressure jet grouting pile grouting elevation limit control device

Abstract

The present invention discloses a high-pressure rotary jet pile grouting elevation limit control device, comprising a verification drill, the verification drill supported on the ground by a plurality of support rods, a vertical column in a vertical state provided on the verification drill, a cross block fixedly connected to the top of the vertical column, rollers rotatably connected at both ends of the cross block, a traction line provided on the two rollers, one end of the traction line connected by a driving device, and the other end connected to a moving block, wherein a plurality of drill rods are vertically provided on the moving block. The present invention drives a reel to rotate by a rotating motor, thereby driving the wire to be wound on the reel. Since the length of the wire is fixed, the more the wound wire is, the more the limit plate is moved up. If the reel is driven to rotate in the opposite direction, the wire is released. Since the length of the wire is fixed, the more the released wire is, the more the limit plate is moved down. Thus, the up and down movement of the limit plate is controlled by the rotating motor, thereby controlling the up and down movement of the plurality of drill rods, achieving precise control of the movement of the drill rods, avoiding overdrilling, and controlling the elevation.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a high-pressure rotary jet pile grouting elevation limit control device. Background Art

[0002] High-pressure rotary grouting is a process that combines high-pressure water jet cutting technology and chemical grouting technology for building foundation reinforcement. Its principle is to use slurry making, pumping, drilling and other equipment, and place the ejector with a nozzle installed at the bottom of the grouting pipe at a predetermined depth in the soil layer. The soft underground soil is shredded by high-pressure water flow and compressed air flow, and then cement slurry is injected to mix with the shredded soil to form a reinforced pile.

[0003] The patent document with publication number CN111577136A and invention name is a high-pressure rotary jet pile hole construction integrated device and its construction method, which discloses a high-pressure rotary jet pile hole construction integrated device, including a rotary jet drill, a high-pressure jet drill rod and a triple tube; the triple tube is fixed at the bottom of the high-pressure jet drill rod, and a down-the-hole hammer is fixed at the bottom of the triple tube; the triple tube includes a slurry ejector, an inner air ejector and an outer air ejector arranged in sequence from the inside to the outside, the down-the-hole hammer is connected to the power head through the high-pressure jet drill rod to transmit power, the slurry ejector is connected to the power head through the high-pressure jet drill rod to transmit power, and the slurry ejector is connected to the power head through the high-pressure jet drill rod to transmit power. The ejector is provided with a slurry outlet hole, and correspondingly, the internal air outlet ejector is provided with an internal air outlet hole; the external air ejector is provided with an external air hole; the slurry outlet hole and the internal air outlet hole are on the same horizontal plane, and the external air hole is located below the slurry outlet hole and the internal air outlet hole. It also includes a slurry stirring barrel, which is connected to the high-pressure grouting pump through a slurry storage barrel, and the high-pressure grouting pump is connected to the triple pipe through a high-pressure slurry pipeline; the high-pressure slurry pipeline is connected to the slurry outlet hole on the slurry ejector, and the internal high-pressure air pipe and the external high-pressure air pipe are respectively equipped with an internal connecting valve and an external connecting valve.

[0004] The above technical solution adopts a construction technology that combines triple pipes with a down-the-hole hammer. By optimizing the construction technical parameters, the obtained pile body has high strength and good construction quality. Compared with the traditional high-pressure rotary jet pile construction method, it requires less mechanical materials, has low costs, and is safe and fast to construct. However, the inventors have found that the above technical solution has the following defects:

[0005] The construction of high-pressure jet grouting piles requires drilling holes first and then grouting. Before drilling holes, it is necessary to determine whether the drill rod length of the drilling rig is consistent with the drill rod scale and to clarify the design bottom elevation of the jet grouting pile. However, the existing technology lacks a restriction function on the drill rod, which makes it easy to over-drill and unable to control the elevation. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-pressure jet grouting pile grouting elevation limit control device, which adds a limiting function to the drill rod to avoid overdrilling and control the elevation.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A high-pressure rotary jet pile grouting elevation limit control device comprises a verification drill, the verification drill is supported on the ground by a plurality of support rods, a vertical column in a vertical state is provided on the verification drill, a cross block is fixedly connected to the top of the vertical column, rollers are rotatably connected to both ends of the cross block, traction lines are provided on the two rollers, one end of the traction line is connected by a driving device, and the other end is connected to a moving block, a plurality of drill rods are vertically provided on the moving block, and spiral drill pieces are provided on the outer walls of the drill rods, and the control device further comprises a limiting component, which can adjust the height of each drill rod;

[0009] A plurality of cylinders are fixedly connected to the bottom of the moving block, the number of the cylinders being the same as the number of the drill rods, the cylinders being hollow, the inner diameter of the cylinders being the same as the outer diameter of the drill rods, and the inner circumferential walls of the cylinders being slidably connected to the corresponding drill rods;

[0010] The limiting component includes a limiting plate, which is perpendicular to each of the cylinders. The limiting plate is provided with a plurality of through holes, the number of the through holes being the same as the number of the cylinders, the inner diameter of the through holes being the same as the outer diameter of the cylinders, and the through holes being slidably connected to the corresponding cylinders.

[0011] The cylinder is provided with a rectangular groove, which is communicated with the interior of the cylinder. The drill rod is provided with an annular groove, the outer diameter of the annular groove is the same as the outer diameter of the drill rod, and the inner diameter of the annular groove is smaller than the outer diameter of the drill rod. A clamping block is fixedly connected to the inner peripheral wall of the through hole, and the clamping block has an arc surface that is adapted to the annular groove. The clamping block passes through the rectangular groove and enters the annular groove.

[0012] Preferably, the vertical column is provided with two symmetrical vertical slots, the vertical slots and the virtual central axis of the vertical column are arranged parallel to each other, and the moving block is slidably connected to the vertical slots.

[0013] Preferably, both sides of the moving block are fixedly connected with a fixed plate, and the end of the fixed plate away from the moving block is fixedly connected with a disc, the disc is located in the corresponding vertical groove and is slidingly connected to the inner side wall of the vertical groove, and the width of the vertical groove is the same as the diameter of the disc.

[0014] Preferably, the limit plate is fixedly connected to at least one rotating motor, the output shaft of the rotating motor is fixedly connected to a reel, the movable block is rotatably connected to at least one fixed pulley, the reel is connected to a wire, the wire passes around the fixed pulley and is connected to the limit plate.

[0015] Preferably, the reel is provided with an inner groove, the inner groove is fixedly connected with a first buckle, one end of the wire is fastened to the first buckle, the movable block is fixedly connected with two mounting plates, the two mounting plates are rotatably connected with a rotating shaft, the rotating shaft passes through the center of the fixed pulley and is fixedly connected to the fixed pulley, the limiting plate is also fixedly connected with at least one second buckle, the other end of the wire is fastened to the second buckle.

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

[0017] 1. In the present invention, when the moving block moves, the disc moves synchronously in the same direction, and the disc slides vertically in the vertical groove, thereby stabilizing the movement of the moving block, preventing the moving block from deflecting and swinging during movement, and contributing to the stability of the drill rod. At the same time, it avoids the difficulty of a separate traction line in controlling the moving block well, overcoming the problem that the moving block is easily deflected and swings when moving up or down.

[0018] 2. The present invention drives the reel to rotate by driving a rotating motor, thereby driving the wire to be wound on the reel. Since the length of the wire is fixed, the more wire is wound, the higher the limit plate will move up. If the reel is driven to rotate in the opposite direction, the wire will be released. Since the length of the wire is fixed, the more wire is released, the lower the limit plate will move. The upward and downward movement of the limit plate can be controlled by the rotating motor, thereby controlling the upward and downward movement of multiple drill rods, thereby achieving precise control of the movement of the drill rods, avoiding over-drilling, and controlling the elevation.

[0019] 3. In order to better control the winding and unwinding of the wire and prevent it from escaping from the reel, an inner groove is provided on the reel. The wire is wound and unwound in the inner groove and is not easily escaping from the reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a high-pressure jet grouting pile grouting elevation limit control device proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure between a moving block and multiple drill rods in a high-pressure jet grouting pile grouting elevation limit control device proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the moving block and the fixed pulley in a high-pressure jet grouting pile grouting elevation limit control device proposed by the present invention;

[0023] Figure 4 This is a structural diagram of a cylinder and a drill rod in a high-pressure jet grouting pile grouting elevation limit control device proposed by the present invention;

[0024] Figure 5This is a schematic diagram of the structure of the limit plate and the limit plate in the high-pressure rotary jet pile grouting elevation limit control device proposed by the present invention.

[0025] In the picture:

[0026] 10. Drilling rig; 11. Support rod; 12. Vertical column; 13. Cross block; 14. Roller; 15. Pull line; 16. Moving block; 17. Drill rod; 18. Auger drill bit;

[0027] 20. Vertical slot; 21. Fixed plate; 22. Disc; 23. Cylinder; 24. Limiting plate; 25. Through hole; 26. Rectangular slot; 27. Annular slot; 28. Block;

[0028] 30. Rotating motor; 31. Reel; 32. Fixed pulley; 33. Wire; 34. Inner groove; 35. First clip; 36. Mounting plate; 37. Rotating shaft; 38. Second clip. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Reference Figure 1-Figure 5 A high-pressure rotary jet pile grouting elevation limit control device includes a verification drill 10, which is supported on the ground by multiple support rods 11. The verification drill rig 10 is provided with a vertical column 12 in a vertical state, and a horizontal block 13 is fixedly connected to the top of the vertical column 12. The two ends of the horizontal block 13 are rotatably connected to rollers 14. A traction line 15 is provided on the two rollers 14, and one end of the traction line 15 is connected by a driving device, and the other end is connected to a moving block 16. The moving block 16 is vertically provided with multiple drill rods 17, and the outer wall of the drill rod 17 is provided with a spiral drill piece 18. The control device also includes a limiting component, which can adjust the height of each drill rod 17.

[0031] The driving device controls the traction line 15 by winding and releasing the traction line 15. When the traction line 15 is wound, the traction line 15 drives the moving block 16 to move upward. When the traction line 15 is released, the traction line 15 drives the moving block 16 to move downward.

[0032] Furthermore, the vertical column 12 is provided with two symmetrical vertical slots 20 . The vertical slots 20 are arranged parallel to the virtual central axis of the vertical column 12 . The moving block 16 is slidably connected to the vertical slots 20 .

[0033] The traction line 15 alone is difficult to control the moving block 16 well, and the moving block 16 is prone to deflection and swing when it moves up or down. Therefore, a component that helps stabilize the movement of the moving block 16 is provided between the moving block 16 and the vertical column 12.

[0034] Furthermore, fixed plates 21 are fixedly connected to both sides of the moving block 16, and a disc 22 is fixedly connected to one end of the fixed plate 21 away from the moving block 16. The disc 22 is located in the corresponding vertical groove 20 and is slidingly connected to the inner wall of the vertical groove 20. The width of the vertical groove 20 is the same as the diameter of the disc 22.

[0035] When the moving block 16 moves, the disc 22 moves synchronously in the same direction, and the disc 22 slides vertically in the vertical groove 20, thereby stabilizing the movement of the moving block 16, preventing the moving block 16 from deflecting and swinging during movement, and contributing to the stability of the drill rod 17.

[0036] Furthermore, a plurality of cylinders 23 are fixedly connected to the bottom of the movable block 16. The number of the cylinders 23 is the same as the number of the drill rods 17. The cylinders 23 are hollow structures. The inner diameter of the cylinders 23 is the same as the outer diameter of the drill rods 17. The inner circumferential wall of the cylinders 23 is slidably connected to the corresponding drill rods 17.

[0037] The drill rod 17 can slide in the corresponding cylinder 23, and the portion of the drill rod 17 that slides out of the cylinder 23 is controlled to control the elevation.

[0038] Furthermore, the limiting component includes a limiting plate 24, which is perpendicular to each cylinder 23. The limiting plate 24 is provided with a plurality of through holes 25. The number of through holes 25 is the same as the number of cylinders 23. The inner diameter of the through hole 25 is the same as the outer diameter of the cylinder 23. The through hole 25 is slidably connected to the corresponding cylinder 23.

[0039] The limiting plate 24 is slidably connected to the plurality of cylinders 23. When the limiting plate 24 moves up or down, it will synchronously drive the plurality of drill rods 17 to move up or down.

[0040] Furthermore, the cylinder 23 is provided with a rectangular groove 26, which is connected to the interior of the cylinder 23, and the drill rod 17 is provided with an annular groove 27. The outer diameter of the annular groove 27 is the same as the outer diameter of the drill rod 17, and the inner diameter of the annular groove 27 is smaller than the outer diameter of the drill rod 17. A clamping block 28 is fixedly connected to the inner wall of the through hole 25. The clamping block 28 has a curved surface that is adapted to the annular groove 27. The clamping block 28 passes through the rectangular groove 26 and enters the annular groove 27.

[0041] Reference Attachment Figure 4 And attached Figure 5The block 28 passes through the rectangular groove 26 and enters the annular groove 27, thereby pressing against the drill rod 17. When the limit plate 24 moves up or down, it will synchronously drive multiple drill rods 17 to move up or down. At the same time, the drill rod 17 can rotate relative to the cylinder 23 and the block 28, or a motor can be set in each cylinder 23 to drive the drill rod 17 to rotate.

[0042] Furthermore, the limit plate 24 is fixedly connected to at least one rotating motor 30. The rotating motor 30 is a prior art and will not be described in detail here. The output shaft of the rotating motor 30 is fixedly connected to a reel 31. The moving block 16 is rotatably connected to at least one fixed pulley 32. The reel 31 is connected to a wire 33. The wire 33 passes around the fixed pulley 32 and is connected to the limit plate 24.

[0043] By driving the rotating motor 30, the reel 31 is driven to rotate, thereby driving the wire 33 to be wound on the reel 31. Since the length of the wire 33 is fixed, the more wire 33 is wound, the more the limit plate 24 moves up. If the reel 31 is driven to rotate in the opposite direction, since the length of the wire 33 is fixed, the more wire 33 is released, the limit plate 24 moves down, thereby realizing the control of the up and down movement of the limit plate 24 by the rotating motor 30, and then controlling the up and down movement of multiple drill rods 17, so as to achieve precise control of the movement of the drill rod 17, avoid over-drilling, and control the elevation.

[0044] Furthermore, the reel 31 is provided with an inner groove 34, the inner groove 34 is fixedly connected to a first buckle 35, one end of the wire 33 is fastened to the first buckle 35, the moving block 16 is fixedly connected to two mounting plates 36, the two mounting plates 36 are rotatably connected to a rotating shaft 37, the rotating shaft 37 passes through the center of the fixed pulley 32 and is fixedly connected to the fixed pulley 32, the limiting plate 24 is also fixedly connected to at least one second buckle 38, the other end of the wire 33 is fastened to the second buckle 38.

[0045] In order to better control the wire 33 and prevent it from escaping from the reel 31, an inner groove 34 is provided in the reel 31. The wire 33 is wound in the inner groove 34 and is not easily escaping from the reel 31.

[0046] Reference Attachment Figure 3 A hole is opened in the mounting plate 36, and a bearing accessory is arranged in the hole. The outer ring of the bearing accessory is fixedly connected to the inner circumferential wall of the hole, and the inner ring of the bearing accessory is fixedly connected to the outer circumferential wall of the rotating shaft 37, thereby realizing the rotational connection between the rotating shaft 37 and the mounting plate 36. The rotating shaft 37 is fixedly arranged coaxially with the fixed pulley 32.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-pressure jet grouting pile grouting elevation limit control device, characterized in that: The invention comprises a verification drilling rig (10), wherein the verification drilling rig (10) is supported on the ground by a plurality of support rods (11), and a vertical column (12) in a vertical state is provided on the verification drilling rig (10), and a horizontal block (13) is fixedly connected to the top of the vertical column (12), and rollers (14) are rotatably connected at both ends of the horizontal block (13), and a traction line (15) is provided on the two rollers (14), one end of the traction line (15) is connected to a driving device, and the other end is connected to a moving block (16), and a plurality of drill rods (17) are vertically provided on the moving block (16), and the outer wall of the drill rod (17) is provided with a spiral drill piece (18), and the control device further comprises a limiting component, and the limiting component can adjust the height of each drill rod (17); A plurality of cylinders (23) are fixedly connected to the bottom of the moving block (16), the number of the cylinders (23) is the same as the number of the drill rods (17), the cylinders (23) are hollow structures, the inner diameter of the cylinders (23) is the same as the outer diameter of the drill rods (17), and the inner circumferential wall of the cylinders (23) is slidably connected to the corresponding drill rods (17); The limiting component comprises a limiting plate (24), the limiting plate (24) being perpendicular to each of the cylinders (23), the limiting plate (24) being provided with a plurality of through holes (25), the number of the through holes (25) being the same as the number of the cylinders (23), the inner diameter of the through hole (25) being the same as the outer diameter of the cylinder (23), and the through hole (25) being slidably connected to the corresponding cylinder (23); The cylinder (23) is provided with a rectangular groove (26), which is communicated with the interior of the cylinder (23); the drill rod (17) is provided with an annular groove (27); the outer diameter of the annular groove (27) is the same as the outer diameter of the drill rod (17), and the inner diameter of the annular groove (27) is smaller than the outer diameter of the drill rod (17); a clamping block (28) is fixedly connected to the inner peripheral wall of the through hole (25); the clamping block (28) has an arc surface, which is adapted to the annular groove (27); the clamping block (28) passes through the rectangular groove (26) and enters the annular groove (27).

2. A high-pressure jet grouting pile grouting elevation limit control device according to claim 1, characterized in that: The vertical column (12) is provided with two symmetrical vertical slots (20), the vertical slots (20) and the virtual central axis of the vertical column (12) are arranged parallel to each other, and the moving block (16) is slidably connected to the vertical slots (20).

3. A high-pressure jet grouting pile grouting elevation limit control device according to claim 2, characterized in that: Both sides of the moving block (16) are fixedly connected with a fixed plate (21), and one end of the fixed plate (21) away from the moving block (16) is fixedly connected with a disc (22), and the disc (22) is located in the corresponding vertical groove (20) and is slidably connected to the inner side wall of the vertical groove (20), and the width of the vertical groove (20) is the same as the diameter of the disc (22).

4. A high-pressure jet grouting pile grouting elevation limit control device according to claim 3, characterized in that: The limiting plate (24) is fixedly connected to at least one rotating motor (30), the output shaft of the rotating motor (30) is fixedly connected to a reel (31), the moving block (16) is rotatably connected to at least one fixed pulley (32), the reel (31) is connected to a wire (33), the wire (33) passes around the fixed pulley (32) and is connected to the limiting plate (24).

5. A high-pressure jet grouting pile grouting elevation limit control device according to claim 4, characterized in that: The reel (31) is provided with an inner groove (34), the inner groove (34) is fixedly connected with a first buckle (35), one end of the wire (33) is fastened to the first buckle (35), the moving block (16) is fixedly connected with two mounting plates (36), the two mounting plates (36) are rotatably connected with a rotating shaft (37), the rotating shaft (37) passes through the center of the fixed pulley (32) and is fixedly connected to the fixed pulley (32), the limiting plate (24) is also fixedly connected with at least one second buckle (38), the other end of the wire (33) is fastened to the second buckle (38).

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