High-pressure rotary jet grouting structure reinforcing device and reinforcing method thereof

Abstract

The application discloses a high-pressure rotary jet grouting structure reinforcing device and a reinforcing method thereof, which comprises a first fixing mechanism, a second fixing mechanism and a supporting rod, the supporting rod comprises a screw rod part at the upper part and a smooth rod part at the lower part, the lug seat at the end of the first fixing mechanism is screwed on the screw rod part, the first fixing mechanism and the second fixing mechanism comprise a mounting seat with an opening on one side, the top of the mounting seat is provided with a limiting ring for guiding the grouting pipe to pass through, and the mounting seat and the limiting ring are connected through fasteners. The mounting seat and the limiting ring are set as the main components of the fixing mechanism, the grouting pipe can be effectively guided and fixed, and the main part of the grouting pipe can be effectively fixed under the action of the first fixing mechanism and the second fixing mechanism which are distributed upwards and downwards.

Description

Technical Field

[0001] This invention relates to the field of high-pressure jet grouting structure reinforcement technology, and in particular to a high-pressure jet grouting structure reinforcement device and its reinforcement method. Background Technology

[0002] High-pressure jet grouting piles use high-pressure rotating nozzles to inject cement slurry into the soil layer and mix it with the soil to form a continuous overlapping cement-reinforced body. The construction requires less land and has lower noise. However, the grouting structure generally lacks reinforcement devices, and the grouting pipe may sway slightly due to mechanical vibration, causing the grout flowing out of the grouting pipe to spill onto the ground, resulting in a waste of resources. Chinese invention patent CN 218990184 U discloses a high-pressure jet grouting pile grouting structure reinforcement device, including a base plate and a grouting pipe. Two limiting columns are fixedly connected to the top of the base plate, and a connecting block is slidably connected to the two limiting columns. A screw rod is screwed into the inside of the connecting block. A limiting block is fixedly connected to the side wall of one of the two limiting columns. A handle is fixedly connected to the screw rod through the limiting block. Two connecting blocks are fixedly connected to the side wall of the connecting block, and a sliding groove is fixedly connected to the side wall of the two connecting blocks. A bidirectional screw rod is rotatably connected inside the sliding groove. Two sliders are screwed onto the bidirectional screw rod, and clamping blocks are fixedly connected to the side wall of the sliders. This device allows fixing nails to be inserted into the ground to fix the connecting blocks, while the clamping blocks can clamp the grouting pipe. However, this positioning method only achieves the fixation of the lower part of the grouting pipe, and the overall fixation of the grouting pipe is not strong, making it easy for the grouting pipe to fall out of the fixing device. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a high-pressure jet grouting structure reinforcement device and method, which addresses the deficiencies of existing technologies and solves the problems mentioned in the background section.

[0004] A high-pressure jet grouting structure reinforcement device according to the present invention includes a first fixing mechanism, a second fixing mechanism, and a support rod. The support rod includes an upper threaded rod portion and a lower smooth rod portion. The lug at the end of the second fixing mechanism is screwed onto the threaded rod portion. The first fixing mechanism and the second fixing mechanism include a mounting seat with an opening on one side. A limiting ring for guiding the grouting pipe through is provided on the top of the mounting seat. The mounting seat and the limiting ring are connected by fasteners. The fasteners include a rod body and a first connector and a second connector provided at both ends thereon. The fasteners are connected to the mounting seat and the limiting ring respectively by bolts.

[0005] Furthermore, a support block is rotatably connected to the bottom of the support rod.

[0006] Furthermore, the first fixing mechanism is movably connected to the bare rod portion.

[0007] Furthermore, the mounting base has clearance grooves on both sides of its open end, and through grooves on the sides of the clearance grooves, which are connected by connectors.

[0008] Furthermore, the connecting component is a bolt and nut connector.

[0009] In the above scheme, the top of the mounting base and the side of the limiting ring are both provided with annularly distributed connecting holes.

[0010] Furthermore, the opening directions of the first connector and the second connector are perpendicular to each other.

[0011] Furthermore, the inner ring of the limiting ring is provided with a wear-resistant layer.

[0012] The present invention also provides a reinforcement method for the above-mentioned high-pressure jet grouting structure reinforcement device, comprising the following steps:

[0013] 1) First, pass the grouting pipe through the second fixing mechanism and the first fixing mechanism sequentially from the top, so that the grouting pipe is simultaneously constrained and fixed by the mounting seat and the limiting ring.

[0014] 2) The second fixing mechanism is driven to move up and down by rotating the support rod;

[0015] 3) The opening size of the mounting base can be adjusted by the connecting parts. Through multiple fasteners distributed on the outside of the limiting ring, a stable connection between the mounting base and the limiting ring can be achieved, thereby effectively improving the stability of the grouting pipe.

[0016] Beneficial effects of this invention:

[0017] 1. The high-pressure jet grouting structure reinforcement device of the present invention has a simple and reasonable structural design and strong practicality.

[0018] 2. This invention, by setting an mounting base and a limiting ring as the main components of the fixing mechanism, can effectively guide and fix the grouting pipe. Furthermore, the first and second fixing mechanisms, distributed vertically, effectively fix the main body of the grouting pipe. The height of the second fixing mechanism can be adjusted by the support rod to achieve the effect of constraining and limiting the pipe at different positions. By setting clearance grooves, through grooves, and connecting parts, the movable end of the mounting base can be tightened, thereby ensuring full contact between the inner wall of the mounting base and the grouting pipe to improve the fixing effect. This invention can adapt to fixing pipes of different sizes, effectively expanding the applicability of the device.

[0019] 3. The present invention uses a fastener consisting of a first connector, a rod, and a second connector to achieve an effective connection between the mounting base and the limiting ring under the action of bolts. Furthermore, since the fasteners are evenly distributed around the limiting ring, stress concentration is avoided, resulting in a more uniform force distribution on the connection mechanism and improved connection stability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the fixing mechanism of the present invention.

[0023] In the figure: 1 First fixing mechanism, 11 Second fixing mechanism, 12 Ear seat, 13 Support rod, 131 Screw part, 132 Smooth rod part, 14 Mounting seat, 15 Limiting ring, 16 Relief groove, 17 Through groove, 18 Connector, 19 Fastener, 191 First connector, 192 Rod body, 193 Second connector, 2 Bolt, 21 Grouting pipe, 22 Support block. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] like Figure 1-2 The high-pressure jet grouting structure reinforcement device shown includes a first fixing mechanism 1, a second fixing mechanism 11, and a support rod 13. The support rod 13 includes an upper screw part 131 and a lower smooth rod part 132. The lug 12 at the end of the second fixing mechanism 11 is screwed onto the screw part 131, and the height of the second fixing mechanism 11 can be adjusted under the action of the support rod 13 to achieve the effect of constraining and limiting the pipe body at different positions.

[0026] The first fixing mechanism 1 and the second fixing mechanism 11 include a mounting base 14 with an opening on one side. The top of the mounting base 14 is provided with a limiting ring 15 for guiding the grouting pipe 21 through. By setting the mounting base 14 and the limiting ring 15 as the main components of the fixing mechanism, the grouting pipe 21 can be effectively guided and fixed. Furthermore, under the action of the first fixing mechanism 1 and the second fixing mechanism 11 distributed vertically, the main body of the grouting pipe 21 can be effectively fixed.

[0027] The mounting base 14 and the limiting ring 15 are connected by fasteners 19. The top of the mounting base 14 and the side of the limiting ring 15 are provided with annularly distributed connecting holes.

[0028] The fastener 19 includes a rod 192 and a first connector 191 and a second connector 193 disposed at its two ends. The fastener 19 is connected to the mounting base 14 and the limiting ring 15 respectively by bolts 2. By setting the fastener consisting of the first connector 191, the rod 192 and the second connector 193, the opening directions of the first connector 191 and the second connector 192 are perpendicular to each other. Under the action of the bolts 2, the mounting base 14 and the limiting ring 15 can be effectively connected. Furthermore, since the fastener 19 is evenly distributed around the limiting ring 15, the problem of stress concentration is avoided, making the connection mechanism more uniformly stressed and improving the connection stability.

[0029] A support block 22 is rotatably connected to the bottom of the support rod 13. The support block 22 is placed on the ground to provide stable support for the connecting mechanism on the support rod 13.

[0030] The first fixing mechanism 1 is movably connected to the smooth rod 132. Specifically, the difference between the first fixing mechanism 1 and the second fixing mechanism 11 is that the ear seat at the end of the first fixing mechanism 1 is provided with a limiting circular hole that rotatably engages with the smooth rod 132, so that the first fixing mechanism 1 and the support rod 13 can only rotate. The ear seat 12 at the end of the second fixing mechanism 11 is provided with a threaded hole that matches the thread of the screw 131.

[0031] The mounting base 14 has clearance grooves 16 on both sides of its open end, and through grooves 17 on the sides of the clearance grooves 16. The through grooves 17 are connected by a connector 18. The connector 18 is a bolt and nut connector. By setting the clearance grooves 16, through grooves 17 and connectors 18, the movable end of the mounting base 14 can be tightened, so that the inner wall of the mounting base 14 can fully contact the grouting pipe 21 to improve the fixing effect. It can adapt to the fixing of pipes of different sizes and effectively expand the application range of the device.

[0032] The inner ring of the limiting ring 15 is provided with a wear-resistant layer. The design of the wear-resistant layer can prevent the grouting pipe 21 from colliding with the inner ring of the limiting ring 15, and at the same time achieve the wear-resistant effect.

[0033] The reinforcement method of the above-mentioned high-pressure jet grouting structure reinforcement device is as follows:

[0034] First, the grouting pipe 21 is passed sequentially through the second fixing mechanism 11 and the first fixing mechanism 1 from the top, so that the grouting pipe 21 is synchronously constrained and fixed by the mounting base 14 and the limiting ring 15. At this time, the second fixing mechanism 11 can be driven to move up and down by rotating the support rod 13, thereby meeting the positioning requirements in different environments. Under the action of the connector 18, the opening size of the mounting base 14 can be adjusted, so that grouting pipes 21 of different diameters can fit against the inner wall of the mounting base 14 to improve their fixing effect. Furthermore, through multiple fasteners distributed on the outside of the limiting ring 15, a stable connection between the mounting base 14 and the limiting ring 15 can be achieved, thereby effectively improving the stability of the grouting pipe 21 and providing sufficient guarantee for the subsequent grouting process.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure jet grouting structure reinforcement device, characterized in that: The system includes a first fixing mechanism (1), a second fixing mechanism (11), and a support rod (13). The support rod (13) includes an upper screw part (131) and a lower smooth rod part (132). The lug (12) at the end of the second fixing mechanism (11) is screwed onto the screw part (131). The first fixing mechanism (1) and the second fixing mechanism (11) include a mounting seat (14) with an opening on one side. The top of the mounting seat (14) is provided with a limiting ring (15) for guiding the grouting pipe (21) through. The mounting seat (14) and the limiting ring (15) are connected to each other. The components are connected by fasteners (19), which include a rod (192) and a first connector (191) and a second connector (193) at both ends. The fasteners (19) are connected to the mounting base (14) and the limiting ring (15) by bolts (2) respectively. The first fixing mechanism (1) is movably connected to the bare rod (132). The mounting base (14) has clearance grooves (16) on both sides of the open end. The clearance grooves (16) have through grooves (17) on the side. The through grooves (17) are connected by connectors (18). The top of the mounting base (14) and the side of the limiting ring (15) are provided with annularly distributed connecting holes; the opening directions of the first connector (191) and the second connector (193) are perpendicular to each other; the bottom of the support rod (13) is rotatably connected to a support block (22).

2. The high-pressure jet grouting structure reinforcement device according to claim 1, characterized in that, The connector (18) is a bolt and nut connector.

3. The high-pressure jet grouting structure reinforcement device according to claim 1, characterized in that, The inner ring of the limiting ring (15) is provided with a wear-resistant layer.

4. A reinforcement method for the high-pressure jet grouting structure reinforcement device according to claim 1, characterized in that: Includes the following steps: 1) First, pass the grouting pipe (21) through the second fixing mechanism (11) and the first fixing mechanism (1) from the top, so that the grouting pipe (21) is simultaneously constrained and fixed by the mounting seat (14) and the limiting ring (15). 2) The second fixing mechanism (11) is driven to move up and down by rotating the support rod (13); 3) Under the action of the connector (18), the opening size of the mounting base (14) can be adjusted. Through multiple fasteners distributed on the outside of the limiting ring (15), the mounting base (14) and the limiting ring (15) can be stably connected, thereby effectively improving the stability of the grouting pipe (21).

Images