A reinforcement device for soft foundation treatment of a composite foundation in municipal engineering

Abstract

The present application relates to a reinforcement device for soft foundation treatment of a composite foundation in municipal engineering, belonging to the technical field of soft foundation reinforcement. In order to solve the problem that the construction period of soft foundation reinforcement is relatively long due to the setting of a large number of soil piles on the foundation, it includes a drill pipe. A threaded blade is arranged on the side wall of the drill pipe. An annular groove is formed in the drill pipe, and the annular groove is arranged along the length direction of the drill pipe. A driving pipe is inserted into the annular groove. An installation groove is formed in the outer side wall of the drill pipe. An extension rod is rotatably connected in the installation groove. A receiving groove is formed in the inner wall of the installation groove. A push rod is connected to the outer side wall of the driving pipe. The push rod is located in the receiving groove, and the push rod is movably inserted into the installation groove. A slider is arranged on the side wall of the push rod. A chute is formed in the side wall of the extension rod, and the depth of the chute gradually becomes shallower from the end of the extension rod far from the rotation connection point to the end close to the rotation connection point. The present application has the effect of reducing the number of soil piles set on the foundation.

Description

Technical Field

[0001] This application relates to the technical field of soft foundation reinforcement, and in particular to a reinforcement device for soft foundation treatment of composite foundation in municipal engineering. Background Art

[0002] Soft foundation treatment, also known as soft soil foundation reinforcement treatment, is a process that, before construction, if the foundation is not strong enough, in order to prevent accidents such as building settlement and cracking after construction, the soft foundation needs to be treated to make its settlement firm enough and improve the consolidation degree and stability of the soft foundation to the design requirements.

[0003] In related technologies, soft foundation treatment includes multiple construction methods, among which the grouting reinforcement method is a commonly used treatment method; the grouting reinforcement method is to move a machine equipped with a drill rod to the foundation to be reinforced, then start the drill rod to rotate and move down into the foundation. The drill rod is provided with threaded blades, and a grouting channel is opened inside the drill rod. The drill rod drives the threaded blades to drill holes in the foundation, and then the drill rod is pulled out along the hole. When pulling out, concrete is injected into the hole through the grouting channel at the same time. Then the drill rod is inserted into the hole again and rotated to stir the concrete and soil, so that the concrete and soil are fully mixed to form a soil pile with higher strength, and thus the reinforcement treatment of the soft foundation can be completed.

[0004] In view of the above related technologies, after the drill rod drives the threaded blades to drill holes in the foundation, the diameter of the holes in the foundation is fixed. Subsequently, the pouring and stirring of concrete are carried out in the holes with a fixed diameter, so that the diameter of the finally formed soil pile is the same as the diameter of the hole. However, the diameter of the holes drilled by the drill rod driving the threaded blades is limited, resulting in a limited diameter of the soil pile; therefore, a larger number of soil piles need to be set on the foundation to meet the overall density of the soil piles, so as to meet the reinforcement strength of the soft foundation, which leads to a longer construction period for soft foundation reinforcement. Summary of the Invention

[0005] In order to reduce the number of soil piles set on the foundation and shorten the construction period of soft foundation reinforcement, this application provides a reinforcement device for soft foundation treatment of composite foundation in municipal engineering.

[0006] A reinforcement device for soft foundation treatment of composite foundation in municipal engineering provided by this application adopts the following technical solutions:

[0007] A reinforcement device for soft foundation treatment of a composite foundation in municipal engineering, including a drill rod. Threaded blades are arranged on the side wall of the drill rod. An annular groove is formed inside the drill rod, and the annular groove is opened along the length direction of the drill rod. A driving pipe is inserted into the annular groove; an installation groove is formed on the outer side wall of the drill rod, and an extension rod is rotatably connected in the installation groove. A receiving groove is formed on the inner wall of the installation groove. A push rod is connected to the outer side wall of the driving pipe, and the push rod is located in the receiving groove. The push rod is movably inserted into the installation groove; a slider is arranged on the side wall of the push rod, and a sliding groove is formed on the side wall of the extension rod. The depth of the sliding groove gradually becomes shallower from the end of the extension rod away from the rotation connection point to the end close to the rotation connection point.

[0008] By adopting the above technical scheme, start the drill rod to rotate and move downward into the foundation. The drill rod drives the threaded blades to drill holes in the foundation, and then the drill rod is pulled out along the hole. When pulling out the drill rod, concrete is injected into the hole of the foundation through the grouting hole at the same time; insert the drill rod into the hole again, start the driving pipe to rotate in the annular groove, the driving pipe drives the push rod to insert into the corresponding installation groove, and at the same time the slider is inserted into the sliding groove. As the driving pipe rotates, the push rod further inserts into the installation groove and drives the slider to slide on the bottom wall of the sliding groove. Since the depth of the sliding groove gradually becomes shallower from the end of the extension rod away from the rotation connection point to the end close to the rotation connection point, when the slider moves, it pushes the extension rod, causing the extension rod to rotate and protrude from the installation groove and protrude from the side wall of the drill rod. When the extension rod rotates and protrudes along the side wall of the drill rod to a position exceeding the threaded blades, stop the rotation of the driving pipe. At this time, start the drill rod to rotate, drive the extension rod to rotate, and at the same time move the drill rod up and down to realize the stirring of concrete and soil. Since the protruding position of the extension rod exceeds the threaded blades, the extension rod can scrape the soil on the inner wall of the hole and mix it with the concrete. While the drill rod rotates, it moves up and down along the hole, so that the soil on the entire inner wall of the hole can be scraped off, thereby increasing the inner diameter of the hole, making the diameter of the finally formed soil pile larger than the diameter of the hole drilled by the drill rod at the beginning, thus expanding the diameter of the soil pile, reducing the number of soil piles on the foundation during construction, and also meeting the overall density of the soil piles and the reinforcement strength of the soft foundation, thereby shortening the construction period of soft foundation reinforcement.

[0009] Preferably, limiting grooves are formed on the two opposite inner side walls of the sliding groove, and the limiting grooves are opened along the length direction of the sliding groove; limiting rods are arranged on the side wall of the slider, and the limiting rods are inserted into the limiting grooves.

[0010] By adopting the above technical scheme, when the slider moves, it drives the limiting rod to slide along the length direction of the limiting groove. The arrangement of the limiting rod and the limiting groove can limit the position of the slider in the sliding groove, prevent the slider from slipping out of the sliding groove when moving in the sliding groove, and at the same time prevent the situation that the slider moves excessively and causes the extension rod to rotate and reset in the direction of the installation groove.

[0011] Preferably, the side wall of the extension rod near one end of the push rod is provided with an inclined plane wall, and the sliding groove is also opened on the inclined plane wall.

[0012] By adopting the above technical solution, when the push rod moves to push the extension rod, there is a distance between the inclined plane wall of the extension rod and the inner wall of the installation groove, which is convenient for the push rod to be inserted into the installation groove and reduces the restriction of the extension rod on the movement of the push rod.

[0013] Preferably, the slider is a cylindrical block, the slider is rotatably connected to the side wall of the push rod, and the slider can roll along the inner wall of the sliding groove; a circumferential groove is opened on the end wall of the slider, the circumferential groove is coaxially arranged with the slider, and one end of the limiting rod is inserted into the circumferential groove and can slide relatively along the circumferential groove.

[0014] By adopting the above technical solution, the moving mode of the slider in the sliding groove changes from sliding to rolling, thereby reducing the friction between the slider and the inner bottom wall of the sliding groove when the slider moves, and reducing the resistance of the push rod to push the extension rod; at the same time, the setting of the circumferential groove enables the slider to roll and the limiting rod can slide relatively along the circumferential groove, so that the rolling of the slider is not restricted by the limiting rod, and the limiting rod can always limit the position of the slider in the sliding groove.

[0015] Preferably, a sealing ring is embedded in the circumferential groove, and a notch for the limiting rod to pass through is opened on the sealing ring.

[0016] Since the working environment of the drill pipe is located in the foundation, it is easy for soil to leak into the circumferential groove, causing blockage of the circumferential groove, making it difficult for the limiting rod to slide relatively along the circumferential groove, and the limiting rod will immediately limit the rolling of the slider, making it difficult for the slider to roll in the sliding groove; by adopting the above technical solution, when the limiting rod slides relatively along the circumferential groove, the sealing ring can be driven to rotate in the circumferential groove through the end wall of the notch, so that the sealing ring can seal the circumferential groove, prevent soil and concrete from entering the circumferential groove, reduce the occurrence of blockage of the circumferential groove, and enable the limiting rod to slide relatively along the circumferential groove smoothly.

[0017] Preferably, a fixed ball is arranged on the side wall of the push rod, an embedding groove is opened on the side wall of the slider, the embedding groove is opened along the circumference of the slider, the cross section of the embedding groove is a circular groove shape, and the caliber of the groove opening of the embedding groove is smaller than the diameter of the fixed ball.

[0018] Under normal circumstances, the slider needs to be rotatably connected to the side wall of the retracting rod through a rotating shaft, and the rotating shaft needs to extend from both ends of the slider to be connected to the push rod. Therefore, when the slider is inserted into the chute, it will drive the rotating shaft to be inserted into the chute synchronously. Therefore, when the chute is opened, it is necessary to consider the position of the rotating shaft and open it wider; by adopting the above technical solution, when the push rod moves, it drives the fixed ball to push the slider to move. When the slider rolls in the chute, the fixed ball slides along the length direction of the embedded groove at the same time. The setting of the fixed ball and the embedded groove can realize the rotating connection of the slider on the side wall of the push rod, and can avoid the situation that the chute needs to make way for the rotating shaft in the traditional rotating connection of the slider, resulting in the widening of the chute groove width.

[0019] Preferably, a shovel plate is provided on the side wall of the fixed ball. The shovel plate is inclined. One end of the shovel plate is connected to the side wall of the fixed ball, and the other end is in contact with the inner wall of the embedded groove.

[0020] Since the working environment of the drill pipe is located in the foundation, it is easy for soil to leak into the embedded groove, causing blockage of the embedded groove, making it difficult for the fixed ball to slide along the embedded groove again. As a result, the relative position of the slider and the fixed ball is fixed, making it difficult for the slider to roll in the chute again; by adopting the above technical solution, when the fixed ball slides along the length direction of the embedded groove, it can drive the shovel plate to shovel the soil in the embedded groove out of the embedded groove to clean the sliding of the fixed ball in the embedded groove, reducing the interference caused by the soil entering the embedded groove to the movement of the fixed ball, resulting in the situation that the slider is difficult to roll.

[0021] Preferably, an inclined panel is provided on the side wall of the slider. One side of the inclined panel protrudes along the side wall of the slider.

[0022] By adopting the above technical solution, when the push rod pushes the slider to roll in the chute, the side wall of the inclined panel will be in contact with the inner wall of the chute and rotate as the slider rolls; when the push rod moves in the reverse direction, it will drive the slider to move in the reverse direction in the chute. At this time, the slider will roll and drive the cross-sectional wall of the inclined panel to be in contact with the inner wall of the chute, thereby preventing the slider from rolling. The slider will slide along the inner wall of the chute under the drive of the push rod, and when the slider slides, it drives the inclined panel to shovel the soil in the chute out of the chute.

[0023] Preferably, a connecting groove is provided on the side wall of the slider. The inclined panel is an elastic plate; one side of the inclined panel is connected to the inner wall of the connecting groove, and the other side protrudes from the connecting groove; the inclined panel can be bent and inserted into the connecting groove.

[0024] When the inclined panel is directly fixed to the side wall of the slider, when the slider rolls and drives the inclined panel to adhere to the inner wall of the chute, the inclined panel will push up the slider against the rolling of the slider. When the slider rolls and drives the inclined panel to separate from the inner wall of the chute, the slider will fall relative to the inner bottom wall of the chute, thus affecting the rolling of the slider; by adopting the above technical solution, when the push rod pushes the slider to roll in the chute, when the side wall of the side panel adheres to the inner wall of the chute, it will be pushed and inserted into the connecting groove under the reaction force of the inner wall of the chute to avoid affecting the rolling of the slider.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Since the protruding position of the extension rod exceeds the threaded blade, the extension rod can scrape the soil on the inner wall of the hole and mix it with the concrete. While the drill rod rotates and moves up and down along the hole, the soil on the entire inner wall of the hole can be scraped off, thereby increasing the inner diameter of the hole, making the diameter of the finally formed soil pile larger than the diameter of the hole drilled by the drill rod at the beginning, thus expanding the diameter of the soil pile. During construction, the number of soil piles on the foundation can be reduced, and the overall density of the soil piles can be satisfied, and the reinforcement strength of the soft foundation can be satisfied, thereby shortening the construction period of the soft foundation reinforcement.

[0027] 2. The rolling setting of the slider, the cooperation of the limiting groove and the limiting rod, and the setting of the circumferential groove enable the slider to roll stably in the chute.

[0028] 3. The closed ring can close the circumferential groove, prevent soil and concrete from entering the circumferential groove, reduce the occurrence of blockage in the circumferential groove, and enable the limiting rod to slide smoothly relative to the circumferential groove. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of a reinforcement device for soft foundation treatment of a municipal engineering composite foundation in an embodiment of the present application.

[0030] Figure 2 is a schematic cross-sectional view for reflecting the positional relationship between the extension rod and the installation groove in an embodiment of the present application.

[0031] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0032] Figure 4 is a schematic structural diagram for reflecting the connection relationship between the push rod and the extension rod in an embodiment of the present application.

[0033] Figure 5 is Figure 4 an enlarged schematic view of part B in

[0034] Description of reference numerals: 1. Mounting base; 2. Drill pipe; 21. Grouting hole; 22. Annular groove; 221. Driving pipe; 23. Mounting groove; 24. Receiving groove; 25. Threaded blade; 3. Extension rod; 31. Slide groove; 32. Limit groove; 33. Inclined wall; 4. Push rod; 41. Fixed ball; 411. Shoveling plate; 5. Slide block; 51. Insertion groove; 52. Circumferential groove; 53. Limit rod; 54. Connection groove; 55. Inclined panel; 56. Sealing ring; 561. Notch. Detailed implementation manners

[0035] The following further elaborates on this application in conjunction with the Figures 1-5 accompanying drawings.

[0036] An embodiment of this application discloses a reinforcement device for soft foundation treatment of a composite foundation in municipal engineering. Referring to Figure 1 , the reinforcement device for soft foundation treatment of a composite foundation in municipal engineering includes a mounting base 1 and a drill pipe 2. The drill pipe 2 is rotatably connected to the mounting base 1. An electric motor for driving the drill pipe 2 to rotate is provided on the mounting base 1. The drill pipe 2 can also move vertically on the mounting base 1. A threaded blade 25 is fixedly connected to the outer side wall of the drill pipe 2. The threaded blade 25 is arranged along the length direction of the drill pipe 2. A grouting hole 21 is formed in the drill pipe 2. The grouting hole 21 is opened along the length direction of the drill pipe 2. One end of the grouting hole 21 communicates with the end wall of the drill pipe 2, and the other end communicates with the side wall of the lower end of the drill pipe 2.

[0037] Referring to Figure 1 , an annular groove 22 is formed in the drill pipe 2. The annular groove 22 is opened downward from the upper end wall of the drill pipe 2 along the length direction of the drill pipe 2. A driving pipe 221 is inserted into the annular groove 22. The upper end of the driving pipe 221 extends out along the upper end wall of the drill pipe 2. The driving pipe 221 can be driven to rotate by the cooperation structure of the electric motor, belt and pulley on the end wall of the drill pipe 2.

[0038] Referring to Figure 2 and Figure 3 , a plurality of mounting grooves 23 are formed in the outer side wall of the drill pipe 2. The plurality of mounting grooves 23 are evenly opened along the length direction and circumferential direction of the drill pipe 2. One mounting groove 23 is located between two segments of the threaded blade 25. An extension rod 3 is rotatably connected to the inner side wall of the mounting groove 23. A receiving groove 24 is formed in the inner side wall of the mounting groove 23. The receiving groove 24 communicates with the annular groove 22. A plurality of push rods 4 are welded to the outer side wall of the driving pipe 221. The push rods 4 are located in the receiving groove 24. The driving pipe 221 can drive the push rods 4 to insert into the corresponding mounting grooves 23.

[0039] Referring to Figure 2 and Figure 3 , a slide block 5 is rotatably connected to the side wall of the push rod 4. The slide block 5 is a cylindrical block. A slide groove 31 is formed in the side wall of the extension rod 3. The groove depth of the slide groove 31 gradually becomes shallower from the end of the extension rod 3 far from the rotation connection point to the end close to the rotation connection point. The slide block 5 can be movably inserted into the slide groove 31.

[0040] Start the rotation of the drill pipe 2 and move it downward into the foundation. The drill pipe 2 drives the threaded blade 25 to drill holes in the foundation, and then the drill pipe 2 is pulled out along the hole. When pulling out, the concrete is injected into the hole in the foundation through the grouting hole 21 at the same time as the drill pipe 2; insert the drill pipe 2 into the hole again, start the drive pipe 221 to rotate in the annular groove 22, the drive pipe 221 drives the push rod 4 to insert into the corresponding installation groove 23, and at the same time the slider 5 is inserted into the chute 31. As the drive pipe 221 rotates, the push rod 4 further inserts into the installation groove 23 and drives the slider 5 to roll on the bottom wall of the chute 31. Since the depth of the chute 31 gradually becomes shallower from the end of the extension rod 3 away from the rotation connection point to the end close to the rotation connection point, when the slider 5 moves, it pushes the extension rod 3, causing the extension rod 3 to rotate and protrude from the installation groove 23 and at the same time protrude from the side wall of the drill pipe 2. When the extension rod 3 rotates along the side wall of the drill pipe 2 and protrudes to a position exceeding the threaded blade 25, the rotation of the drive pipe 221 can be stopped. At this time, start the rotation of the drill pipe 2 to drive the extension rod 3 to rotate, and at the same time move the drill pipe 2 up and down to realize the stirring of the concrete and the soil.

[0041] Refer to Figure 3 、 Figure 4 and Figure 5 , on the two opposite inner side walls of the chute 31, limit grooves 32 are opened. The limit grooves 32 are opened along the length direction of the chute 31. A limit rod 53 is provided on the side wall of the slider 5, and the limit rod 53 is inserted into the limit groove 32; a circumferential groove 52 is opened on the end wall of the slider 5. The circumferential groove 52 is coaxially arranged with the slider 5, and the end of the limit rod 53 away from the limit groove 32 is inserted into the circumferential groove 52; the arrangement of the limit rod 53 and the limit groove 32 can limit the position of the slider 5 in the chute 31, prevent the slider 5 from slipping out of the chute 31 when moving in the chute 31, and at the same time can also prevent the situation that the slider 5 moves excessively and causes the extension rod 3 to rotate and reset in the direction of the installation groove 23. The setting of the circumferential groove 52 enables the slider 5 to roll and the limit rod 53 to slide relative to each other along the circumferential groove 52, so that the rolling of the slider 5 is not restricted by the limit rod 53, and the limit rod 53 can always limit the position of the slider 5 in the chute 31.

[0042] Refer to Figure 3 、 Figure 4 and Figure 5 , the side wall of the extension rod 3 close to the push rod 4 is provided with an inclined surface wall 33. The chute 31 and the limit groove 32 are both opened on the inclined surface wall 33. When the push rod 4 moves to push the extension rod 3, there is a gap between the inclined surface wall 33 of the extension rod 3 and the inner wall of the installation groove 23, which is convenient for the push rod 4 to insert into the installation groove 23 and reduces the restriction of the extension rod 3 on the movement of the push rod 4.

[0043] Refer to Figure 4 and Figure 5, a closed ring 56 is embedded in the circumferential groove 52. A notch 561 is formed in the closed ring 56. The limiting ring passes through the notch 561, and the closed ring 56 is clamped in the circumferential groove 52. When the limiting rod 53 slides relatively along the circumferential groove 52, the closed ring 56 is driven to rotate in the circumferential groove 52 through the end wall of the notch 561, so that the circumferential groove 52 can be closed, reducing the situation of soil and concrete entering the circumferential groove 52.

[0044] Refer to Figure 4 and Figure 5 , a fixed ball 41 is fixedly connected to the side wall of the push rod 4. An embedding groove 51 is formed in the side wall of the slider 5. The embedding groove 51 is formed along the circumference of the slider 5. The cross section of the embedding groove 51 is a circular groove, and the caliber of the notch of the embedding groove 51 is smaller than the diameter of the fixed ball 41. When the push rod 4 moves, the fixed ball 41 is driven to push the slider 5 to move. When the slider 5 rolls in the sliding groove 31, the fixed ball 41 slides along the length direction of the embedding groove 51 at the same time. The setting of the fixed ball 41 and the embedding groove 51 can realize the rotational connection of the slider 5 on the side wall of the push rod 4, and can avoid the situation that the sliding groove 31 needs to be widened to make way for the rotating shaft due to the traditional rotating shaft connection of the slider 5.

[0045] Refer to Figure 5 , a shovel plate 411 is arranged on the side wall of the fixed ball 41. The shovel plate 411 is inclined. One end of the shovel plate 411 is connected to the side wall of the fixed ball 41, and the other end is attached to the inner wall of the embedding groove 51. When the fixed ball 41 slides along the length direction of the embedding groove 51, the shovel plate 411 can be driven to shovel the soil in the embedding groove 51 out of the embedding groove 51, so as to clean the sliding of the fixed ball 41 in the embedding groove 51, reducing the situation that the soil entering the embedding groove 51 interferes with the movement of the fixed ball 41, resulting in difficulty in rolling of the slider 5.

[0046] Refer to Figure 5 , a connecting groove 54 is formed in the side wall of the slider 5. An inclined panel 55 is arranged in the connecting groove 54. The inclined panel 55 is an elastic metal plate. One side of the inclined panel 55 is connected to the inner wall of the connecting groove 54, and the other side protrudes from the connecting groove 54. The inclined panel 55 can be bent and inserted into the connecting groove 54. When the push rod 4 pushes the slider 5 to roll in the sliding groove 31, the side wall of the inclined panel 55 will be attached to the inner wall of the sliding groove 31 and be pushed to insert into the connecting groove 54 under the reaction force of the inner wall of the sliding groove 31 to avoid affecting the rolling of the slider 5. When the push rod 4 moves in the reverse direction, the slider 5 will be driven to move in the reverse direction in the sliding groove 31. At this time, the slider 5 will roll to drive the cross-sectional wall of the inclined panel 55 to be attached to the inner wall of the sliding groove 31, thus preventing the slider 5 from rolling. The slider 5 will slide along the inner wall of the sliding groove 31 under the drive of the push rod 4, and the slider 5 will drive the inclined panel 55 to shovel the soil in the sliding groove 31 out of the sliding groove 31 when sliding.

[0047] The implementation principle of a reinforcement device for soft foundation treatment of a composite foundation in municipal engineering in an embodiment of the present application is as follows: Start the rotation of the drill rod 2 and lower it into the foundation. The drill rod 2 drives the threaded blade 25 to drill holes in the foundation. Then, the drill rod 2 is pulled out along the hole. When pulled out, concrete is injected into the hole in the foundation through the grouting hole 21 at the same time; the drill rod 2 is inserted into the hole again, and the driving pipe 221 is started to rotate in the annular groove 22. The driving pipe 221 drives the push rod 4 to insert into the corresponding installation groove 23. At the same time, the slider 5 is inserted into the chute 31. As the driving pipe 221 rotates, the push rod 4 further inserts into the installation groove 23 and drives the slider 5 to roll on the bottom wall of the chute 31. Since the depth of the chute 31 gradually becomes shallower from the end of the extension rod 3 far away from the rotation connection point to the end close to the rotation connection point, when the slider 5 moves, it pushes the extension rod 3, causing the extension rod 3 to rotate and protrude from the installation groove 23 and protrude from the side wall of the drill rod 2. When the extension rod 3 rotates and protrudes along the side wall of the drill rod 2 to a position exceeding the threaded blade 25, the rotation of the driving pipe 221 can be stopped. At this time, start the rotation of the drill rod 2 to drive the extension rod 3 to rotate, and at the same time, the drill rod 2 moves up and down. Since the protruding position of the extension rod 3 exceeds the threaded blade 25, the extension rod 3 can scrape the soil on the inner wall of the hole and mix it with the concrete. While the drill rod 2 rotates, it moves up and down along the hole, so that the soil on the entire inner wall of the hole can be scraped off, thereby increasing the inner diameter of the hole and making the diameter of the finally formed soil pile larger than the diameter of the hole initially drilled by the drill rod 2, thus expanding the diameter of the soil pile, reducing the number of soil piles on the foundation during construction, and also meeting the overall density of the soil piles and the reinforcement strength of the soft foundation, thereby shortening the construction period of the soft foundation reinforcement.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reinforcement device for soft foundation treatment of a composite foundation in municipal engineering, including a drill pipe (2), wherein a threaded blade (25) is arranged on the side wall of the drill pipe (2), and it is characterized in that, An annular groove (22) is formed in the drill pipe (2), the annular groove (22) is formed along the length direction of the drill pipe (2), and a driving pipe (221) is inserted into the annular groove (22); an installation groove (23) is formed in the outer side wall of the drill pipe (2), an extension rod (3) is rotatably connected in the installation groove (23), a receiving groove (24) is formed in the inner wall of the installation groove (23), a push rod (4) is connected to the outer side wall of the driving pipe (221), the push rod (4) is located in the receiving groove (24), and the push rod (4) can be movably inserted into the installation groove (23); a sliding block (5) is arranged on the side wall of the push rod (4), a sliding groove (31) is formed in the side wall of the extension rod (3), and the groove depth of the sliding groove (31) gradually becomes shallower from the end of the extension rod (3) far from the rotation connection point to the end close to the rotation connection point. Limiting grooves (32) are formed in the two opposite inner side walls of the sliding groove (31), and the limiting grooves (32) are formed along the length direction of the sliding groove (31); a limiting rod (53) is arranged on the side wall of the sliding block (5), and the limiting rod (53) is inserted into the limiting groove (32).

2. The reinforcement device for soft foundation treatment of the municipal engineering composite foundation according to claim 1, characterized in that, The side wall of the extension rod (3) close to the push rod (4) is provided with an inclined surface wall (33), and the sliding groove (31) is formed on the inclined surface wall (33) at the same time.

3. The reinforcement device for soft foundation treatment of the municipal engineering composite foundation according to claim 1, characterized in that, The sliding block (5) is a cylindrical block, the sliding block (5) is rotatably connected to the side wall of the push rod (4), and the sliding block (5) can roll along the inner wall of the sliding groove (31); a circumferential groove (52) is formed in the end wall of the sliding block (5), the circumferential groove (52) is coaxially arranged with the sliding block (5), and one end of the limiting rod (53) is inserted into the circumferential groove (52) and can relatively slide along the circumferential groove (52).

4. The reinforcement device for soft foundation treatment of municipal engineering composite foundation according to claim 3, characterized in that, A sealing ring (56) is embedded in the circumferential groove (52), and a notch (561) for the limiting rod (53) to pass through is formed in the sealing ring (56).

5. The reinforcement device for soft foundation treatment of municipal engineering composite foundation according to claim 3, characterized in that, A fixed ball (41) is arranged on the side wall of the push rod (4), an embedding groove (51) is formed in the side wall of the sliding block (5), the embedding groove (51) is formed along the circumference of the sliding block (5), the cross section of the embedding groove (51) is a circular groove shape, and the aperture of the groove opening of the embedding groove (51) is smaller than the diameter of the fixed ball (41).

6. The reinforcement device for soft foundation treatment of municipal engineering composite foundation according to claim 5, characterized in that, A shovel plate (411) is arranged on the side wall of the fixed ball (41), the shovel plate (411) is obliquely arranged, one end of the shovel plate (411) is connected to the side wall of the fixed ball (41), and the other end is attached to the inner wall of the embedding groove (51).

7. The reinforcement device for soft foundation treatment of municipal engineering composite foundation according to claim 3, characterized in that, An inclined surface plate (55) is arranged on the side wall of the sliding block (5), and one side of the inclined surface plate (55) protrudes along the side wall of the sliding block (5).

8. The reinforcement device for soft foundation treatment of municipal engineering composite foundation according to claim 7, characterized in that, A connecting groove (54) is formed in the side wall of the sliding block (5), and the inclined surface plate (55) is an elastic plate; one side of the inclined surface plate (55) is connected to the inner wall of the connecting groove (54), and the other side protrudes from the connecting groove (54); the inclined surface plate (55) can be bent and inserted into the connecting groove (54).

Images