A multifunctional stirring device for reinforcing soft soil foundation and a reinforcement method using the same

Abstract

The invention relates to the technical field of soft soil foundation reinforcement, and specifically to a multifunctional stirring device for soft soil foundation reinforcement and a reinforcement method using the same, comprising a connecting head, a slurry storage tank is fixedly installed at the bottom of the connecting head, a rotating mechanism is arranged inside the slurry storage tank, the rotating mechanism comprises a supporting arm, a rotating beam is rotatably arranged at the bottom of the supporting arm, and a transmission mechanism is arranged in the space formed by the transmission groove and the cover; the invention adopts the design of the rotating mechanism and the transmission mechanism, when it is necessary to solidify the deep soft soil, a plurality of stirring heads are penetrated into the soft soil through the rotating beam, so that the plurality of stirring heads rotate while the stirring heads and the rotating beam realize revolution with the supporting arm as the center, so that the curing agent is quickly and fully mixed into the soft soil in all directions, and the plurality of stirring heads are arranged in the vertical direction, so that the soft soils at different depths can be solidified at the same time, so that the deep soft soil can be solidified conveniently and quickly.

Description

Technical Field

[0001] The invention relates to the technical field of soft soil foundation reinforcement, in particular to a multifunctional stirring device for soft soil foundation reinforcement and a reinforcement method using the same. Background Art

[0002] Soft soil foundation reinforcement technology is to solidify and repair loose soft soil on site without replacement. It can be used for large-area shallow solidification treatment and is widely used in roadbed solidification of high-speed construction access roads and swamp solidification. During the construction process, the curing agent is transported to the front powerful mixing head through a hose. The mixing head mixes deep underground to achieve the effect of in-situ solidification of the soft soil. The mixing device is a drilling tool commonly used in foundation engineering. Its main function is to stir in the soil layer through rotational motion. It is especially suitable for reinforcement operations under relatively soft geological conditions such as soft soil, sand, and clay.

[0003] A Chinese patent with prior art announcement number CN118326974B discloses a soft soil in-situ solidification device and construction method, including a stirring arm, a stirring head and a feeding device. When the invention is blocked by foreign matter, under the action of the pressure inside the feeding pipe, the elastic petal on the corresponding side is deformed and expanded, and the elastic petal on the other side is pulled to contract through the connecting sleeve to discharge the foreign matter and avoid blockage of the feeding pipe. No additional drive unit is required, and it is easy and efficient to use.

[0004] The Chinese patent with the prior art announcement number CN116180712B discloses a powerful stirring device and its application, including a cone head, a stirring ring and a material injection plate that are fixedly connected in sequence. The powerful stirring device provided by the application embodiment can determine the number of stirring rings to be loaded and unloaded according to the soft soil solidification depth, and each stirring ring is provided with two grouting pots at both ends to fully ensure the efficiency and quality of soft soil stirring and grouting. The bottom end of the device is a circular cone head, which can reduce the cone head resistance during the stirring and sinking process of the device.

[0005] The above-mentioned and similar prior arts, when curing deep soft soil, usually involve inserting two stirring heads into the soft soil and performing reciprocating up and down motions to fully flip the soft soil so that it can be mixed with the curing agent for curing. However, the two stirring heads of the prior art are always on both sides of the rotary drill bit. When stirring and curing are performed on the same plane, this will inevitably result in the soft soil in other directions of the rotary drill bit not being able to be mixed with the curing agent, which is not conducive to the uniformity of the curing agent. Subsequently, it is necessary to change the planar working position of the stirring head to stir and mix the soft soil in other directions again, which increases the workload and affects the curing efficiency. In addition, when stirring and curing are performed in the vertical direction, it is necessary to change the vertical working position of the stirring head for stirring and mixing, which increases the construction time.

[0006] Therefore, the present invention provides a multifunctional stirring device for reinforcing soft soil foundations, which can quickly stir and solidify deep-layer and large-area shallow-layer soft soil. Summary of the invention

[0007] Aiming at the problems that the mixing head in the prior art has low solidification efficiency for deep soft soil and low solidification efficiency for large-area shallow soft soil, a multifunctional mixing device for reinforcing soft soil foundation is provided.

[0008] Another object of the present invention is to provide a reinforcement method using a multifunctional stirring device for reinforcing a soft soil foundation.

[0009] The technical solution adopted by the present invention to solve its technical problem is:

[0010] A multifunctional stirring device for reinforcing soft soil foundation comprises a connecting head, a slurry storage tank is fixedly installed at the bottom of the connecting head, the bottom of the slurry storage tank is in a through-hole state, a rotating mechanism is arranged inside the slurry storage tank, the rotating mechanism comprises a supporting arm, a telescopic rod is rotatably installed on one side of the supporting arm through a fixed plate, a rotating beam is rotatably arranged at the bottom of the supporting arm, transmission grooves are respectively provided on both sides of the rotating beam, sealing covers are respectively fixedly installed on both sides of the rotating beam through bolts, a transmission mechanism is arranged in the space formed by the transmission groove and the sealing cover, the transmission mechanism comprises a plurality of rotating valves, a stirring head is fixedly installed on one side of the rotating valve through bolts; the rotating mechanism is equipped to drive the plurality of stirring heads to rotate with the rotating beam as the center through the supporting arm, and the spatial position of the stirring head is changed by driving the rotating beam to rotate through the telescopic rod; the transmission mechanism is equipped to drive the plurality of stirring heads to rotate at the same time.

[0011] Furthermore, a slurry inlet valve is installed through one side of the slurry storage tank.

[0012] Furthermore, the rotating mechanism also includes a driving motor, which is fixedly installed on the inner side of the top wall of the slurry storage tank. A V-shaped rod is fixedly installed on the output end of the driving motor, and both ends of the V-shaped rod are fixedly installed on the top of the support arm. The top position of the support arm is cylindrical, and the bottom position is square. The support arm is rotatably installed at the through hole position at the bottom of the slurry storage tank through a sealed bearing. Pillars are fixedly installed on both sides of the support arm, and T-channels are opened through the inside of the support arm and the pillars. The T-channel penetrating the top of the support arm is a water inlet, and the T-channel penetrating the inside of the pillar is a water outlet. The output end of the telescopic rod is rotatably connected to the side of the rotating beam close to the slurry inlet valve through a fixed plate.

[0013] Furthermore, a rotating groove is provided at the top of the rotating beam, a plurality of reinforcing rods are fixedly installed on the inner side of the rotating groove, slurry storage grooves are provided on the inner walls on both sides of the rotating groove, and the pillars are rotatably installed on the inner side of the slurry storage grooves through sealed bearings.

[0014] Furthermore, transmission grooves are respectively provided on both sides of the rotating beam, and a plurality of support columns are fixedly installed on the inner wall of the two transmission grooves close to each other. A slurry delivery channel is opened through the interior of the rotating beam, and the liquid inlet of the slurry delivery channel is opened through the inner wall of the slurry storage tank, and the liquid outlets of the slurry delivery channel are respectively opened through the interior of the support columns, and the slurry delivery channel deviates from the center position of the rotating beam, and an electromagnetic valve is fixedly installed at the liquid outlet of the slurry delivery channel on one side of the support column.

[0015] Furthermore, the rotary valve is rotationally connected to the outer side of the support column through a bearing, and is rotationally connected to the inner side of the cover through a bearing. The two rotary valves at the top of the inner side of the transmission groove are transmission-connected through a group of sprocket transmission group 1, and the two rotary valves at the bottom are transmission-connected through another group of sprocket transmission group 1. The two rotary valves near the middle position on the inner side of the transmission groove are transmission-connected through sprocket transmission group 2, and sprocket transmission group 2 is located on one side of sprocket transmission group 1.

[0016] Furthermore, a bidirectional motor is fixedly installed inside the rotating beam, the output end of the bidirectional motor is arranged at the center position of the support column and is rotatably connected to the support column through a bearing, and a plurality of connecting plates are fixedly installed on the outer side of the output end of the bidirectional motor, and the connecting plates are fixedly installed on the inner wall of the rotating valve.

[0017] Furthermore, a plurality of slurry outlet pipes are installed through the interior of the stirring head.

[0018] Preferably, the curing agent includes a slurry formed by mixing cement, fly ash, lime and other materials in a certain proportion.

[0019] A reinforcement method using a multifunctional stirring device for reinforcing a soft soil foundation, the steps are as follows:

[0020] S1, introduce curing agent, connect the slurry inlet valve with the external curing agent pipeline, so that the curing agent fills the inner side of the slurry delivery channel;

[0021] S2. Select one of the following processes based on the actual situation:

[0022] a. Start the bidirectional motor to drive all the mixing heads to rotate, and vertically penetrate the rotating beam into the deep soft soil;

[0023] b. Start the telescopic rod to retract and drive the rotating beam to rotate, and the rotating beam rotates 90° to a horizontal state;

[0024] S3. Based on the selection in S2, select one of the following processes:

[0025] c. When S2 selects process a, the solenoid valve is selectively started according to the mixing head drilled into the soft soil, so that the curing agent flows from the slurry delivery channel through the slurry outlet pipe into the soft soil;

[0026] d. When S2 selects process b, start the bidirectional motor to drive all the mixing heads to rotate, penetrate the horizontal rotating beam into the shallow soft soil, and open all the solenoid valves.

[0027] The following steps are also included:

[0028] S4, start the driving motor to drive the support arm to rotate, so that the support arm drives all the stirring heads to perform orbital stirring with the support arm as the center through the rotating beam.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The multifunctional stirring device for reinforcing soft soil foundation described in the present invention adopts the design of a rotating mechanism and a transmission mechanism. When it is necessary to solidify the deep soft soil, multiple stirring heads are pushed deep into the soft soil through a rotating beam, so that the multiple stirring heads rotate while the stirring heads and the rotating beam revolve around the support arm as the center. Under the action of the double rotation, the curing agent is quickly and fully mixed into the soft soil in all directions. The multiple stirring heads are arranged in a vertical direction, so that soft soils at different depths can be solidified at the same time, which is convenient and fast for solidifying the deep soft soil and improves the construction solidification effect.

[0031] (2) The multifunctional mixing device for reinforcing soft soil foundation described in the present invention, when it is necessary to solidify shallow soft soil, first drives the rotating beam to rotate to a horizontal position through the telescopic rod, so that multiple mixing heads can realize self-rotation and revolution along the horizontal plane under the action of the rotating mechanism and the transmission mechanism, thereby increasing the mixing and solidification area of ​​the mixing head, facilitating the mixing and solidification of a large area of ​​shallow soft soil, and being able to change the mixing and solidification working mode according to the construction scene, further improving the construction solidification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the stirring device of the present invention;

[0034] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the slurry storage tank of the present invention;

[0035] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the inner side of the rotating mechanism of the present invention;

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating beam of the present invention;

[0037] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the slurry delivery channel of the present invention;

[0038] Figure 6 It is a three-dimensional structural schematic diagram of the transmission mechanism of the present invention;

[0039] Figure 7 It is a schematic diagram of the three-dimensional structure of the bottom section of the rotation of the present invention;

[0040] Figure 8 It is a schematic diagram of the three-dimensional structure of the stirring head of the present invention;

[0041] Fig. 9 It is a schematic diagram of the three-dimensional structure of the stirring device after the telescopic rod of the present invention is retracted;

[0042] Fig.10 It is an operation flow chart of the stirring device of the present invention.

[0043] In the figure: 1. Connector; 2. Slurry storage tank; 3. Slurry inlet valve; 4. Rotating mechanism; 41. Driving motor; 42. V-shaped rod; 43. Support arm; 44. Pillar; 45. T-channel; 46. Telescopic rod; 5. Rotating beam; 6. Rotating groove; 7. Reinforcing rod; 8. Slurry storage groove; 9. Transmission groove; 10. Support column; 11. Slurry delivery channel; 12. Solenoid valve; 13. Cover; 14. Transmission mechanism; 141. Rotating valve; 142. Sprocket transmission group 1; 143. Sprocket transmission group 2; 15. Bidirectional motor; 16. Connecting plate; 17. Agitating head; 18. Slurry outlet pipe. DETAILED DESCRIPTION

[0044] In order to make the technical means, technical features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0045] Example: Figure 1-Figure 10As shown, a multifunctional stirring device for reinforcing a soft soil foundation according to the present invention comprises a connecting head 1, a slurry storage tank 2 is fixedly mounted at the bottom of the connecting head 1, the bottom of the slurry storage tank 2 is in a through-hole state, a rotating mechanism 4 is arranged inside the slurry storage tank 2, the rotating mechanism 4 comprises a supporting arm 43, a telescopic rod 46 is rotatably mounted on one side of the supporting arm 43 through a fixed plate, and the rotating mechanism 4 is configured to drive a plurality of stirring heads 17 to rotate with a rotating beam 5 as a circle center through the supporting arm 43, and to drive the rotating beam 5 to rotate through the telescopic rod 46 to change the spatial position of the stirring head 17; The rotating mechanism 4 also includes a driving motor 41, which is fixedly installed on the inner side of the top wall of the slurry storage tank 2. A V-shaped rod 42 is fixedly installed on the output end of the driving motor 41, and both ends of the V-shaped rod 42 are fixedly installed on the top of a support arm 43. The top position of the support arm 43 is cylindrical, and the bottom position is square. The support arm 43 is rotatably installed at the through hole position at the bottom of the slurry storage tank 2 through a sealed bearing. Pillars 44 are fixedly installed on both sides of the support arm 43, and the output end of the telescopic rod 46 is rotatably connected to the side of the rotating beam 5 close to the slurry inlet valve 3 through a fixed plate.

[0046] Specifically, the connector 1 can provide connection support with an external power device, and can be fixedly connected to the excavation equipment through bolts penetrating the connector 1, so as to control the mixing device for construction. The connector 1 can provide stable support for the slurry storage tank 2, and the slurry storage tank 2 can provide storage space for external curing agent. The slurry storage tank 2 can provide a placement space for the drive motor 41, and the drive motor 41 can provide a rotational driving force for the V-shaped rod 42. The two ends of the V-shaped rod 42 are located at a position off-center from the top of the support arm 43. In order to leave the center position of the top of the support arm 43 empty and facilitate the opening of the T-channel 45, the cylindrical shape of the top of the support arm 43 can be conveniently rotatably connected to the through hole at the bottom of the slurry storage tank 2. The support arm 43 can provide stable support for the pillar 44, and the pillar 44 can provide rotation support for the rotating beam 5. When the drive motor 41 During operation, the driving motor 41 drives the support arm 43 to rotate, and the support arm 43 drives the rotating beam 5 to rotate through the pillar 44, so that the mixing head 17 can realize orbital revolution with the support arm 43 as the center, thereby improving the mixing efficiency of the mixing head 17, and the telescopic rod 46 can provide a rotation connection for the support arm 43 and the rotating beam 5 at the same time through the fixed plate. When the telescopic rod 46 contracts, the output end of the telescopic rod 46 drives the rotating beam 5 to rotate, so that the rotating beam 5 rotates 90° with the pillar 44 as the center under the support of the pillar 44, thereby changing the rotating beam 5 from a vertical state to a horizontal state. The rotating beam 5 in the vertical state can quickly solidify deep soft soil, and the rotating beam 5 in the horizontal state can quickly solidify shallow soft soil, which is convenient for workers to choose different solidification construction methods according to actual construction scenarios and improve construction efficiency.

[0047] In this embodiment, a rotating beam 5 is rotatably provided at the bottom of the support arm 43, transmission grooves 9 are respectively opened on both sides of the rotating beam 5, and covers 13 are respectively fixedly installed on both sides of the rotating beam 5 by bolts, a rotating groove 6 is opened on the top of the rotating beam 5, and a plurality of reinforcing rods 7 are fixedly installed on the inner side of the rotating groove 6, and slurry storage grooves 8 are respectively opened on the inner walls of both sides of the rotating groove 6, and the support column 44 is rotatably installed on the inner side of the slurry storage groove 8 through a sealed bearing, and transmission grooves 9 are respectively opened on both sides of the rotating beam 5, and a plurality of support columns 10 are fixedly installed on the inner wall of the side where the two transmission grooves 9 are close to each other.

[0048] Specifically, the rotating beam 5 can provide an opening space for the transmission groove 9, and the transmission groove 9 can provide a working space for the transmission mechanism 14. The rotating beam 5 can provide screw holes for bolt connection for the cover 13. The cover 13 is fixed to both sides of the rotating beam 5 by bolts, and the cover 13 can be disassembled and assembled, which is convenient for subsequent maintenance of the stirring device. The rotating beam 5 can provide an opening space for the rotating groove 6. The rotating groove 6 can provide a rotation space for the support arm 43. The rotating groove 6 can provide a stable support for the reinforcing rod 7. The reinforcing rod 7 can provide support for the rotating beam 5 with the rotating groove 6. When the rotating beam 5 rotates to a horizontal state for work, the reinforcing rod 7 can prevent the rotating beam 5 from being deformed by force during construction. The rotating groove 6 can provide an opening space for the slurry storage tank 8. The slurry storage tank 8 can provide rotation support for the pillar 44 through a sealed bearing. There is a gap between the plane part of the pillar 44 and the plane part of the slurry storage tank 8. The gap can facilitate the transition of the curing agent from the T-shaped through hole to the slurry delivery channel 11.

[0049] In this embodiment, a transmission mechanism 14 is arranged in the space formed by the transmission groove 9 and the cover 13, and the transmission mechanism 14 includes a plurality of rotating valves 141, and a stirring head 17 is fixedly installed on one side of the rotating valve 141 by bolts; the transmission mechanism 14 is assembled to simultaneously drive the plurality of stirring heads 17 to rotate, the rotating valve 141 is rotationally connected to the outer side of the support column 10 through a bearing, and is rotationally connected to the inner side of the cover 13 through a bearing, the two rotating valves 141 at the top of the inner side of the transmission groove 9 are transmission-connected through a group of sprocket transmission group 1 142, the two rotating valves 141 at the bottom are transmission-connected through another group of sprocket transmission group 1 142, and the two rotating valves 141 near the middle position on the inner side of the transmission groove 9 are transmission-connected through a sprocket transmission group 2 143, and the sprocket transmission group 2 143 is located on one side of the sprocket transmission group 1 142.

[0050] Specifically, the rotary valve 141 is rotatably connected to the cover 13 via a bearing sleeved on the outside, and the rotary valve 141 is rotatably connected to the support column 10 via a bearing sleeved on the outside of the support column 10. The multiple rotary valves 141 are transmission-connected via a sprocket transmission group 1 142 and a sprocket transmission group 2 143. The sprocket transmission group 1 142 and the sprocket transmission group 2 143 are respectively composed of two sprockets and a chain. The sprocket transmission group 1 142 and the sprocket transmission group 2 143 can realize the simultaneous rotation of multiple rotary valves 141, and the rotary valve 141 can provide a fixed connection for the mixing head 17, thereby enabling the multiple mixing heads 17 to rotate simultaneously. The rotation of the rotary valve 141 in coordination with the revolution of the mixing head 17 can quickly stir the soft soil in multiple directions, so that the curing agent can be fully mixed with the soft soil, thereby improving the curing construction efficiency.

[0051] In this embodiment, a bidirectional motor 15 is fixedly installed inside the rotating beam 5, the output end of the bidirectional motor 15 is arranged at the center position of the support column 10, and is rotatably connected to the support column 10 through a bearing, and a plurality of connecting plates 16 are fixedly installed on the outer side of the output end of the bidirectional motor 15, and the connecting plates 16 are fixedly installed on the inner wall of the rotating valve 141.

[0052] Specifically, the interior of the rotating beam 5 can provide a placement space for the bidirectional motor 15, and the connecting plate 16 can provide a stable connection between the output end of the bidirectional motor 15 and the inner side of the rotating valve 141, so that the bidirectional motor 15 provides a rotational driving force for the stirring heads 17 on both sides through the connecting plate 16. When the output end of the bidirectional motor 15 drives a rotating valve 141 on both sides to rotate through the connecting plate 16, under the transmission action of the sprocket transmission group 1 142 and the sprocket transmission group 2 143, all the stirring heads 17 on both sides can rotate at the same time, so that all the stirring heads 17 have the same stirring speed, thereby improving the stirring and mixing effect.

[0053] In this embodiment, a slurry inlet valve 3 is installed on one side of the slurry storage tank 2, a T-channel 45 is opened inside the support arm 43 and the pillar 44, the T-channel 45 passing through the top of the support arm 43 is a water inlet, and the T-channel 45 passing through the pillar 44 is a water outlet, a slurry delivery channel 11 is opened inside the rotating beam 5, the liquid inlet of the slurry delivery channel 11 is opened through the inner wall of the slurry storage tank 8, and the liquid outlets of the slurry delivery channel 11 are respectively opened inside the support column 10, and the slurry delivery channel 11 deviates from the center position of the rotating beam 5, an electromagnetic valve 12 is fixedly installed at the liquid outlet of the slurry delivery channel 11 on one side of the support column 10, and a plurality of slurry outlet pipes 18 are installed inside the stirring head 17.

[0054] Specifically, the support arm 43 can provide a through-opening space for the T-channel 45, and the T-channel 45 is opened at the center position of the support arm 43, the rotating beam 5 can provide a through-opening space for the slurry delivery channel 11, and through the opening of the slurry storage tank 8, the slurry storage tank 8 can provide a transitional transmission function for the liquid flow between the T-channel 45 and the slurry delivery channel 11, the support column 10 can provide a stable support for the solenoid valve 12, the stirring head 17 can provide a through-support for the slurry discharge pipe 18, the solenoid valve 12 can control the closure of the liquid outlet of the slurry delivery channel 11, and then can selectively control the slurry discharge pipes 18 at different vertical positions to spray the curing agent, so that the staff can select the corresponding slurry discharge pipe 18 to spray the curing agent according to the stirring head 17 deep in the soft soil, so as to prevent the excessive spraying of the curing agent.

[0055] A reinforcement method using a multifunctional stirring device for reinforcing a soft soil foundation, the steps are as follows:

[0056] S1, introducing curing agent, connecting the slurry inlet valve 3 with the external curing agent pipeline, so that the curing agent fills the inner side of the slurry delivery channel 11;

[0057] S2. Select one of the following processes based on the actual situation:

[0058] a. Start the bidirectional motor 15 to drive all the mixing heads 17 to rotate, and vertically move the rotating beam 5 into the deep soft soil;

[0059] b. Start the telescopic rod 46 to contract and drive the rotating beam 5 to rotate, and the rotating beam 5 rotates 90° to a horizontal state;

[0060] S3. Based on the selection in S2, select one of the following processes:

[0061] c. When S2 selects process a, the solenoid valve 12 is selectively started according to the mixing head 17 drilled into the soft soil, so that the curing agent flows from the slurry delivery channel 11 through the slurry outlet pipe 18 into the soft soil;

[0062] d. When S2 selects process b, the bidirectional motor 15 is started to drive all the mixing heads 17 to rotate, the horizontal rotating beam 5 is pushed deep into the shallow soft soil, and all the solenoid valves 12 are opened.

[0063] The following steps are also included:

[0064] S4, start the driving motor 41 to drive the support arm 43 to rotate, so that the support arm 43 drives all the stirring heads 17 to perform orbital stirring with the support arm 43 as the center through the rotating beam 5.

[0065] Working principle: The initial state is as follows Figure 1As shown, the staff first connects the slurry inlet valve 3 with the external curing agent pipeline, and then starts the bidirectional motor 15, so that the output end of the bidirectional motor 15 drives the two rotary valves 141 to rotate through the connecting plate 16, and under the transmission action of the sprocket transmission group 1 142 and the sprocket transmission group 2 143, all the rotary valves 141 rotate at the same time, and then the rotary valve drives all the mixing heads 17 to rotate;

[0066] When the staff needs to solidify the deep soft soil, the rotating beam 5 is vertically inserted into the soft soil, and the rotating beam 5 drives the self-rotating mixing head 17 to drill into the soft soil, so that the mixing head 17 drives the surrounding soft soil to turn over, and the electromagnetic valve 12 is selectively started according to the mixing head 17 drilled into the soft soil, and only the electromagnetic valve 12 corresponding to the mixing head 17 immersed in the soft soil is opened, and the external curing agent enters the inner side of the slurry storage tank 2 through the slurry inlet valve 3, and then the curing agent enters the slurry storage tank 8 through the T-channel 45, so that the curing agent passes through the liquid outlet of the infusion pipeline corresponding to the support column 10. It enters the inner side of the mixing head 17 and flows into the soft soil through the slurry outlet pipe 18. Then the staff starts the driving motor 41, so that the driving motor 41 drives the support arm 43 to rotate, so that the support arm 43 drives all the mixing heads 17 to revolve around the support arm 43 as the center through the rotating beam 5. Under the dual rotation of the revolution and rotation of the mixing head 17, the curing agent is quickly and fully mixed in the soft soil, and the multiple mixing heads 17 arranged in the vertical direction can simultaneously cure the soft soils of different depths. The combination of the two facilitates the rapid curing of the deep soft soil.

[0067] When the staff needs to solidify the shallow soft soil, the staff starts the telescopic rod 46 to retract, so that the output end of the telescopic rod 46 drives the rotating beam 5 to rotate, and the rotating beam 5 rotates 90° to a horizontal state (such as Fig. 9 As shown), the rotating beam 5 is then inserted into the shallow soft soil, all the solenoid valves 12 are opened, and the drive motor 41 is started to drive the rotating beam 5 to rotate horizontally, so that the rotating beam 5 drives all the stirring heads 17 to revolve with the support arm 43. At this time, the rotating beam 5 rotates to drive a large area of ​​soft soil to turn over and mix with the curing agent, so as to quickly and conveniently cure a large area of ​​shallow soft soil.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional stirring device for reinforcing a soft soil foundation, comprising a connecting head (1), characterized in that: A slurry storage tank (2) is fixedly mounted on the bottom of the connector (1), the bottom of the slurry storage tank (2) being in a through-hole state, a rotating mechanism (4) is arranged inside the slurry storage tank (2), the rotating mechanism (4) comprising a support arm (43), a telescopic rod (46) being rotatably mounted on one side of the support arm (43) via a fixed plate, a rotating beam (5) being rotatably mounted on the bottom of the support arm (43), transmission grooves (9) being respectively provided on both sides of the rotating beam (5), sealing covers (13) being respectively fixedly mounted on both sides of the rotating beam (5) via bolts, the transmission grooves (9) and the sealing covers being respectively connected to the support arm (43 ... A transmission mechanism (14) is arranged in the space formed by the cover (13), the transmission mechanism (14) comprising a plurality of rotary valves (141), a stirring head (17) being fixedly mounted on one side of the rotary valve (141) by means of bolts, the two rotary valves (141) at the top of the inner side of the transmission groove (9) being transmission-connected via a group of sprocket transmission group 1 (142), the two rotary valves (141) at the bottom being transmission-connected via another group of sprocket transmission group 1 (142), and the two rotary valves (141) at the inner side of the transmission groove (9) near the middle position being transmission-connected via a sprocket transmission group 2 (143); The rotating mechanism (4) further comprises a driving motor (41), the driving motor (41) being fixedly mounted on the inner side of the top wall of the slurry storage tank (2), a V-shaped rod (42) being fixedly mounted on the output end of the driving motor (41), and both ends of the V-shaped rod (42) being fixedly mounted on the top of a support arm (43), the top of the support arm (43) being in a cylindrical shape, and the bottom being in a square shape, the support arm (43) being rotatably mounted on a through hole at the bottom of the slurry storage tank (2) via a sealed bearing, pillars (44) being fixedly mounted on both sides of the support arm (43), a T-shaped channel (45) being provided through the inside of the support arm (43) and the pillar (44), the T-shaped channel (45) penetrating the top of the support arm (43) being a water inlet, and the T-shaped channel (45) penetrating the inside of the pillar (44) being a water outlet; A rotating mechanism (4) is configured to drive a plurality of stirring heads (17) to rotate with a rotating beam (5) as a center through a support arm (43), and to drive the rotating beam (5) to rotate through a telescopic rod (46) to change the spatial position of the stirring heads (17); A transmission mechanism (14) configured to simultaneously drive a plurality of stirring heads (17) to rotate; The output end of the telescopic rod (46) is rotatably connected to the rotating beam (5) via a fixed plate; A rotating groove (6) is provided on the top of the rotating beam (5), a plurality of reinforcing rods (7) are fixedly mounted on the inner side of the rotating groove (6), slurry storage grooves (8) are respectively provided on the inner walls of both sides of the rotating groove (6), and the support column (44) is rotatably mounted on the inner side of the slurry storage groove (8) via a sealed bearing; A plurality of support columns (10) are fixedly mounted on the inner walls of the two transmission grooves (9) on one side close to each other; A bidirectional motor (15) is fixedly installed inside the rotating beam (5); an output end of the bidirectional motor (15) is arranged at the center of the support column (10) and is rotationally connected to the support column (10) via a bearing.

2. The multifunctional stirring device for reinforcing soft soil foundation according to claim 1, characterized in that: A slurry inlet valve (3) is installed through one side of the slurry storage tank (2).

3. The multifunctional stirring device for reinforcing soft soil foundation according to claim 2, characterized in that: A slurry delivery channel (11) is provided through the interior of the rotating beam (5); a liquid inlet of the slurry delivery channel (11) is provided through the inner wall of the slurry storage tank (8); liquid outlets of the slurry delivery channel (11) are provided through the interior of the support column (10), respectively; the slurry delivery channel (11) is offset from the center position of the rotating beam (5); and a solenoid valve (12) is fixedly mounted at the liquid outlet of the slurry delivery channel (11) on one side of the support column (10).

4. The multifunctional stirring device for reinforcing soft soil foundation according to claim 3, characterized in that: The rotary valve (141) is rotatably connected to the outer side of the support column (10) via a bearing, and is also rotatably connected to the inner side of the cover (13) via a bearing.

5. The multifunctional stirring device for reinforcing soft soil foundation according to claim 4, characterized in that: A plurality of connection plates (16) are fixedly mounted on the outer side of the output end of the bidirectional motor (15), and the connection plates (16) are fixedly mounted on the inner wall of the rotary valve (141).

6. The multifunctional stirring device for reinforcing soft soil foundation according to claim 5, characterized in that: A plurality of slurry outlet pipes (18) are installed through the interior of the stirring head (17).

7. A reinforcement method using a multifunctional stirring device for reinforcing soft soil foundation according to claim 6, characterized in that: The steps of the reinforcement method are as follows: S1, introducing curing agent, connecting the slurry inlet valve (3) with the external curing agent pipeline, so that the curing agent fills the inner side of the slurry delivery channel (11); S2. Select one of the following processes according to the actual situation: a. Start the bidirectional motor (15) to drive all the mixing heads (17) to rotate, and move the rotating beam (5) vertically into the deep soft soil; b. Start the telescopic rod (46) to contract and drive the rotating beam (5) to rotate, and the rotating beam (5) rotates 90° to a horizontal state; S3. Based on the selection in S2, select one of the following processes: c. When S2 selects process a, the solenoid valve (12) is selectively started to open according to the mixing head (17) drilled into the soft soil, so that the curing agent flows from the slurry delivery channel (11) through the slurry outlet pipe (18) into the soft soil; d. When S2 selects process b, the bidirectional motor (15) is started to drive all the mixing heads (17) to rotate, the horizontal rotating beam (5) is pushed deep into the shallow soft soil, and all the solenoid valves (12) are opened.

8. The reinforcement method using a multifunctional stirring device for reinforcing soft soil foundation according to claim 7 further comprises the following steps, characterized in that: S4, starting the driving motor (41) to drive the support arm (43) to rotate, so that the support arm (43) drives all the stirring heads (17) to perform orbital stirring with the support arm (43) as the center through the rotating beam (5).

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