Stirring device for soft foundation treatment

Abstract

The invention relates to the technical field of soft soil foundation treatment, in particular to a stirring device for soft foundation treatment, which comprises a stirring box, a spline shaft is rotatably connected to the inner side wall of the stirring box in a penetrating manner, a plurality of stirring plates are fixedly connected to the side wall of the spline shaft in a penetrating manner, and a circulating groove is formed in the inner wall of the spline shaft. The inner wall of each stirring plate is provided with a matching groove communicating with the circulation groove, a plurality of guniting heads communicating with the matching grooves are embedded in the side walls of the stirring plates, a motor is installed on the inner side wall of the stirring box, the output end of the motor is fixedly connected with a worm, and the inner side wall of the stirring box is rotationally connected with a worm wheel through a circular shaft; one end of the circular shaft is fixedly connected with a transverse rod, and the other end of the transverse rod is rotationally connected with a push rod through a circular pin. According to the method, the cement mortar is continuously injected into the hole grooves formed by extrusion of the extrusion columns, and under the combined action of the cement supporting piles and the hard layer formed by solidification of the sludge, the soft foundation solidification treatment effect can be obviously improved.

Description

Technical Field

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

[0002] At present, when construction projects are carried out on some silt soft foundations, the silt foundation has high water content, high compressibility and low bearing capacity, which brings great inconvenience and safety hazards to the construction. Therefore, it is necessary to solidify this type of soft foundation and change the physical and chemical properties of the silt through physical, chemical or biological methods, so that it is transformed from a loose and flowing state into a solid material with certain strength and stability.

[0003] At present, the treatment method for this type of soft foundation is often to mix the solidified mud with the silt through mechanical stirring to make the silt form a solid form. During the construction process, the stirring blades of the mixer are often pressed into the silt to force the solidified mud and the surrounding silt to form a mud reinforcement. The cement and the soil undergo a series of physical and chemical reactions, which harden the silt soft foundation and improve the foundation strength. However, there are also some defects. For example, the stirring blades of the mixer cannot conveniently stir the silt soft foundation of different depths, and the position of the sprayed solidified mud is fixed, resulting in a limited mixing range of the solidified mud and the silt soft foundation, and no support piles are set at the bottom of the silt layer to improve the effect of soft foundation treatment. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a stirring device for soft foundation treatment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A stirring device for soft foundation treatment comprises a stirring box, wherein the inner side wall of the stirring box passes through a spline shaft for rotation connection, the side wall of the spline shaft passes through a plurality of stirring plates for fixed connection, the inner wall of the spline shaft is provided with a circulation groove, the inner wall of each stirring plate is provided with a matching groove connected with the circulation groove, the side wall of the stirring plate is embedded with a plurality of spray heads connected with the matching groove, the inner side wall of the stirring box is provided with a motor, the output end of the motor is fixedly connected with a worm, the inner side wall of the stirring box is rotatably connected with a worm gear through a circular shaft, one end of the circular shaft is fixedly connected with a cross bar, the other end of the cross bar is rotatably connected with a push rod through a round pin, the inner side wall of the stirring box is rotatably connected with a matching gear through a cylinder, the side wall of the cylinder is fixedly connected with a matching rod, the other end of the matching rod is rotatably connected with the push rod, and the side wall of the spline shaft is fixedly connected with a plurality of annular teeth; A supporting mechanism for improving the soft foundation treatment effect is arranged inside the mixing box.

[0006] Preferably, the supporting mechanism includes a slide plate slidably connected to the inner wall of the mixing box, a slide groove is provided on the side wall of the slide, an L-shaped plate is slidably connected inside the slide groove, a limiting block is fixedly connected to the side wall of the L-shaped plate, a support block is fixedly connected to the side wall of the slide plate, a wedge block is fixedly connected to the side wall of the support block, a sliding column is slidably connected through the inner wall of the support block, one end of the sliding column is fixedly connected to the L-shaped plate, one end of the L-shaped plate is fixedly connected to a return spring, and the other end of the return spring is fixedly connected to the inner wall of the support block.

[0007] Preferably, the support mechanism also includes a round rod connected to the inner wall of the mixing box for limited rotation, the side wall of the round rod is fixedly connected with a wedge plate, the side wall of the wedge plate is fixedly connected with a right-angle trapezoidal block, one end of the L-shaped plate passes through the inner wall of the mixing box and is fixedly connected with an extrusion column, and a circular cavity is opened through the inner wall of the extrusion column.

[0008] Preferably, a side wall at one end of the extrusion column is provided with a plurality of one-way discharge holes connected to the circular cavity, a side wall of the slide plate is provided with a groove, a plurality of magnetic springs are fixedly connected to the inner wall of the groove, and the other end of the magnetic spring is fixedly connected to a rack.

[0009] Preferably, the rack and the inner side wall of the groove slide against each other, and the rack and the matching gear are meshingly connected.

[0010] Preferably, a torsion spring is sleeved and fixedly connected to the side wall of the round rod, and the other end of the torsion spring is fixedly connected to the inner wall of the mixing box.

[0011] Preferably, the right-angled trapezoidal block and the side wall of the L-shaped plate slide against each other, and the right-angled trapezoidal block contacts with the limiting block after sliding for a certain distance.

[0012] Preferably, the bottom end of the extrusion column is a truncated cone structure, a feeding pipe is fixedly passed through the top end of the extrusion column, the feeding pipe passes through the L-shaped plate, and the feeding pipe is fixedly connected to an external cement pump.

[0013] Preferably, a rotating joint is fixedly installed at one end of the spline shaft away from the multiple stirring plates, and the other end of the rotating joint is fixedly connected to the external spraying pipe, the side wall of the worm is fixedly connected to the first gear, the inner side wall of the mixing box is fixedly connected to the support plate, the side wall of the support plate is rotatably connected to the second gear, the spline shaft and the second gear are keyed, and the second gear and the first gear are meshingly connected.

[0014] Preferably, the top wall of the mixing box is fixedly connected with a connecting frame, the worm and the worm wheel are meshingly connected, and the matching gear and the plurality of annular teeth are meshingly connected.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The solidified slurry from the outside will enter the flow groove of the spline shaft through the rotary joint and flow into multiple matching grooves, and finally be sprayed out from the spray heads installed on the side walls of multiple stirring plates to combine with the sludge in the soft base. By setting structures such as worms, matching gears and annular teeth, the matching gears can drive the spline shaft to reciprocate along its axial direction through multiple annular teeth during the forward and reverse rotation process. Then the spline shaft will drive multiple stirring plates fixedly connected to its side walls to reciprocate synchronously, and then the multiple stirring plates will stir at different depths in the soft base sludge, thereby improving the solidification efficiency of the soft base sludge; 2. In the above process, by setting the first gear, the second gear and the spline shaft and other structures, during the reciprocating motion of the spline shaft along its axial direction, the second gear always drives the spline shaft to rotate, and then the spline shaft drives multiple stirring plates to stir in the soft base sludge, and the stirring stirring plates will drive multiple spray heads to rotate synchronously, so that the spray heads spray out solidified slurry during the rotation process, thereby increasing the contact range between the solidified slurry and the soft base sludge; 3. In the above process, when the cylinder rotates clockwise, the squeezing column can be inserted into the soil at the bottom of the soft foundation mud layer by cooperating with the gear, rack and slide plate and other structures. Then the squeezing column will continue to be inserted to squeeze the soil, so that the soil forms a tight structure under the pressure to improve the strength, until the L-shaped plate stops driving the squeezing column to move, and the reset spring will be squeezed and contracted. When the wedge block and the wedge plate are in contact with each other, the right-angled trapezoidal block will be separated from the stop block. Then, under the elastic potential energy of the reset spring, the L-shaped plate will drive the squeezing column to move quickly for a distance to impact and compact the soil, so that the cement pile formed later has sufficient supporting strength. 4. When the matching gear rotates in the opposite direction, the slide plate will also slide in the opposite direction for a distance. During the reverse movement of the L-shaped plate, the extrusion column will be driven to move in the opposite direction synchronously. At this time, cement mortar is continuously injected into the feeding pipe through an external cement pump. These cement mortars will enter the hole grooves formed by the extrusion column through the circular cavity and the one-way discharge hole, and then solidify to form cement support piles. Under the joint action of the cement support piles and the hard layer formed by the solidification of the silt, the effect of the soft foundation solidification treatment can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a stirring device for soft foundation treatment proposed by the present invention; Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A; Figure 3 This is a schematic diagram of the positional relationship between the flow slot and the matching slot in a stirring device for soft foundation treatment proposed by the present invention; Figure 4This is a schematic diagram of the positional relationship of structures such as a limit block, a right-angle trapezoidal block and a wedge-shaped plate in a stirring device for soft foundation treatment proposed by the present invention; Figure 5 It is a schematic diagram of a state in which a return spring in a stirring device for soft foundation treatment proposed by the present invention is compressed and a wedge-shaped plate is about to rotate; Figure 6 It is a schematic diagram of the state when the limit block in the stirring device for soft foundation treatment proposed by the present invention moves to the position below the right-angle trapezoidal block; Figure 7 This is a schematic diagram of the internal structure of a groove in a stirring device for soft foundation treatment proposed by the present invention; Figure 8 The present invention provides a schematic diagram of the connection relationship between structures such as a crossbar, a push rod and a matching rod in a stirring device for soft foundation treatment proposed by the present invention.

[0017] In the figure: 1, mixing box; 2, connecting frame; 3, spline shaft; 4, annular teeth; 5, mixing plate; 6, groove; 7, magnetic spring; 8, rack; 9, feeding pipe; 12, worm; 13, round shaft; 14, worm gear; 15, round pin; 16, push rod; 17, matching rod; 18, cylinder; 19, matching gear; 20, motor; 21, matching groove; 22, spray head; 23, cross bar; 24, flow Through slot; 25, second gear; 26, slide plate; 27, slide slot; 28, support block; 29, slide column; 30, return spring; 31, L-shaped plate; 32, limit block; 33, wedge block; 34, round rod; 35, torsion spring; 36, wedge plate; 37, right-angle trapezoidal block; 38, extrusion column; 39, one-way discharge hole; 40, first gear; 41, rotary joint; 42, circular cavity; 43, support plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Reference Figure 1 - Figure 8 A stirring device for soft base treatment comprises a stirring box 1, wherein a spline shaft 3 is rotatably connected to the inner side wall of the stirring box 1, a flow groove 24 is provided on the inner wall of the spline shaft 3, a plurality of stirring plates 5 are fixedly connected to the side wall of the spline shaft 3 located outside the stirring box 1, and each stirring plate 5 is provided with a matching groove 21 connected to the flow groove 24 on the inner wall (see attached Figure 3), a plurality of spray heads 22 connected to the matching grooves 21 are embedded in the side wall of the stirring plate 5, a motor 20 is installed on the inner wall of the stirring box 1, a worm 12 is fixedly connected to the output end of the motor 20, a circular shaft 13 is rotatably connected to the inner wall of the stirring box 1, and a worm wheel 14 is fixedly connected to the side wall of the circular shaft 13 (refer to the attached Figure 2 ), a cross bar 23 is fixedly connected to the side wall of one end of the circular shaft 13, and the other end of the cross bar 23 is rotatably connected to the push rod 16 through a round pin 15, a cylinder 18 is rotatably connected to the inner side wall of the mixing box 1, a matching gear 19 is fixedly connected to the side wall of the cylinder 18, a matching rod 17 is fixedly connected to the side wall of the cylinder 18, and the other end of the matching rod 17 is rotatably connected to the push rod 16, and a plurality of annular teeth 4 are fixedly connected to the side wall of the spline shaft 3; A supporting mechanism for improving the soft foundation treatment effect is arranged inside the mixing box 1 .

[0020] The supporting mechanism includes a slide plate 26 slidably connected to the inner wall of the mixing box 1, a slide groove 27 is opened on the side wall of the slide plate 26, an L-shaped plate 31 is slidably connected inside the slide groove 27, the L-shaped plate 31 penetrates the inner wall of the mixing box 1 and extends to the outside of the mixing box 1, the L-shaped plate 31 is fixedly connected to the side wall inside the mixing box 1 with a limiting block 32, the side wall of the slide plate 26 is fixedly connected to the support block 28, the side wall of the support block 28 is fixedly connected to the wedge block 33, the inner wall of the support block 28 penetrates and is slidably connected with a sliding column 29, one end of the sliding column 29 is fixedly connected to the L-shaped plate 31, one end of the L-shaped plate 31 is fixedly connected to a return spring 30, the other end of the return spring 30 is fixedly connected to the inner wall of the support block 28, and the return spring 30 is sleeved on the side wall of the sliding column 29.

[0021] The supporting mechanism also includes a round rod 34 which is rotatably connected to the inner wall of the mixing box 1. The round rod 34 can only rotate within a certain angle range. The side wall of the round rod 34 is fixedly connected with a wedge plate 36 (see attached Figure 4 ), the side wall of the wedge-shaped plate 36 is fixedly connected with a right-angled trapezoidal block 37, one end of the L-shaped plate 31 passes through the inner wall of the mixing box 1 and is fixedly connected with an extrusion column 38, and a circular cavity 42 is opened through the inner wall of the extrusion column 38.

[0022] A plurality of one-way discharge holes 39 communicating with the circular cavity 42 are formed on the side wall of one end of the extrusion column 38 . The one-way discharge holes 39 have a one-way function realized by a built-in one-way valve.

[0023] A groove 6 is provided on the side wall of the slide plate 26, and a plurality of magnetic springs 7 are fixedly connected to the inner wall of the groove 6. The magnetic spring 7 is a prior art. After the magnetic spring 7 is energized, due to electromagnetic induction, the magnetic spring 7 interacts with the current in the external magnetic field to generate pulling forces of different sizes to control the tensile deformation and movement state of the magnetic spring 7, that is, the magnetic spring 7 can be contracted for a certain distance after being energized. The other end of the magnetic spring 7 is fixedly connected with a rack 8, and the rack 8 slides against the inner wall of the groove 6. When the magnetic spring 7 is not energized, the rack 8 is meshed with the matching gear 19. When the extrusion column 38 is not needed to continue to move downward, the magnetic spring 7 is energized, the magnetic spring 7 will be contracted for a certain distance, and then the rack 8 will be disengaged from the matching gear 19.

[0024] A torsion spring 35 is sleeved and fixedly connected to the side wall of the round rod 34 , and the other end of the torsion spring 35 is fixedly connected to the inner wall of the mixing box 1 .

[0025] The right-angled trapezoidal block 37 and the side wall of the L-shaped plate 31 slide against each other, and the right-angled trapezoidal block 37 contacts the limiting block 32 after sliding for a distance.

[0026] The bottom end of the extrusion column 38 is a truncated cone structure, and a feeding pipe 9 is fixedly passed through the top end of the extrusion column 38. The feeding pipe 9 passes through the L-shaped plate 31, and the feeding pipe 9 is fixedly connected to an external cement pump.

[0027] A rotary joint 41 is fixedly installed at one end of the spline shaft 3 away from the multiple mixing plates 5. The rotary joint 41 is a prior art, which can make the spline shaft 3 and the external spraying pipe rotate relative to each other without interference. The specific principle will not be repeated here. The other end of the rotary joint 41 is fixedly connected to the external spraying pipe. The side wall of the worm 12 is fixedly connected to the first gear 40, and the inner wall of the mixing box 1 is fixedly connected to the support plate 43. The side wall of the support plate 43 is rotatably connected to the second gear 25. The side wall of the second gear 25 is provided with an annular protrusion, and the side wall of the support plate 43 is provided with an annular groove. The annular protrusion of the second gear 25 is engaged with the annular groove. The second gear 25 can slide to realize the free rotation of the second gear 25 on the side wall of the support plate 43. A spline groove cooperating with the spline shaft 3 is provided at the axis center of the second gear 25. The spline shaft 3 is keyed to the second gear 25, and a through hole for the spline shaft 3 to pass through and rotate is provided on the support plate 43. The spline shaft 3 freely passes through the through hole of the support plate 43. Since the second gear 25 is rotatably connected to the bottom side wall of the support plate 43, and the spline shaft 3 is keyed to the second gear 25 after passing through the support plate 43, the second gear 25 can drive the spline shaft 3 to rotate synchronously after rotating, and the second gear 25 is always meshed with the first gear 40.

[0028] The top wall of the mixing box 1 is fixedly connected with a connecting frame 2, the worm 12 and the worm wheel 14 are meshed and connected, and the matching gear 19 and the plurality of annular teeth 4 are meshed and connected.

[0029] In the present invention, the external traction equipment is fixedly connected to the connecting frame 2 on the mixing box 1, thereby driving the mixing box 1 to spray and mix at different positions in the sludge soft foundation to achieve the purpose of soft foundation solidification treatment.

[0030] Since the other end of the rotary joint 41 is fixedly connected to the external grouting pipe, the external solidified slurry will enter the flow groove 24 of the spline shaft 3 through the rotary joint 41 and flow into the multiple matching grooves 21, and finally be sprayed out from the spraying heads 22 installed on the side walls of the multiple stirring plates 5 to combine with the silt in the soft foundation. In the above process, the motor 20 is turned on, and the output end of the motor 20 drives the worm 12 fixedly connected thereto to rotate, the worm 12 drives the worm gear 14 meshing with it to rotate, and the worm gear 14 drives the circular shaft 13 to rotate, and the circular shaft 13 drives the cross bar 23 fixedly connected thereto to rotate, and the cross bar 23 drives the round pin 15 to drive ... The push rod 16 moves, so that the push rod 16 drives the matching rod 17 connected to it to rotate forward and backward for a certain angle with the cylinder 18 as the center. Then the cylinder 18 will drive the matching gear 19 to rotate forward and backward synchronously. Since the matching gear 19 is meshed with multiple annular teeth 4, the matching gear 19 will drive the spline shaft 3 to reciprocate along its axial direction through the multiple annular teeth 4 during the forward and reverse rotation. Then the spline shaft 3 will drive the multiple stirring plates 5 fixedly connected to its side walls to reciprocate synchronously, and then the multiple stirring plates 5 will stir at different depths in the soft base sludge, thereby improving the solidification efficiency of the soft base sludge.

[0031] The worm 12 will also drive the first gear 40 fixedly connected to its side wall to rotate, and the first gear 40 will drive the second gear 25 meshing with it to rotate, and the second gear 25 will drive the spline shaft 3 to rotate. The shaft body of the spline shaft 3 is provided with a spline portion, and the spline portion is always keyed to the second gear 25. Then, in the process of the spline shaft 3 reciprocating along its axial direction, the second gear 25 always drives the spline shaft 3 to rotate, and then the spline shaft 3 drives multiple stirring plates 5 to stir in the soft base sludge, and the stirring stirring plates 5 will drive multiple spraying heads 22 to rotate synchronously, so that the spraying head 22 sprays out solidified slurry during rotation, thereby increasing the contact range between the solidified slurry and the soft base sludge.

[0032] When the cylinder 18 rotates clockwise, the cylinder 18 will drive the rack 8 meshing with it to move through the matching gear 19, and the rack 8 will drive the slide plate 26 to slide a certain distance inside the mixing box 1. Then, the slide plate 26 will first drive the L-shaped plate 31 to move synchronously for a certain distance (such as Figure 4As shown in the figure, the L-shaped plate 31 drives the squeezing column 38 fixedly connected thereto to be inserted into the soil at the bottom of the soft foundation mud layer, and then the squeezing column 38 will continue to be inserted to squeeze this part of the soil, so that the soil forms a tight structure under the action of pressure to improve the strength, until the limit block 32 fixedly connected to the L-shaped plate 31 and the right-angled trapezoidal block 37 are in contact with each other, and then under the counteraction of the limit block 32 and the right-angled trapezoidal block 37, the L-shaped plate 31 will not continue to drive the squeezing column 38 to move, and the slide plate 26 will squeeze and contract the return spring 30 under the action of the matching gear 19 and the rack 8 and continue to move for a distance until the wedge block 33 fixed on the slide plate 26 by the support block 28 and the wedge plate 36 are in contact with each other (as shown in the figure). Figure 5 As shown in the figure, under the action of the wedge block 33, the wedge plate 36 rotates a certain angle with the round rod 34 as the center, then the right-angled trapezoidal block 37 will be separated from the stop block 32. Then, under the action of the elastic potential energy of the reset spring 30, the L-shaped plate 31 will drive the extrusion column 38 to move quickly for a distance to impact and compact the soil in this part, so that the cement pile formed subsequently has sufficient supporting strength.

[0033] When the mating gear 19 rotates in the reverse direction, the slide plate 26 will also slide in the reverse direction for a distance, and drive the L-shaped plate 31 to move in the reverse direction synchronously through the return spring 30 and the slide column 29. At this time, the wedge plate 36 and the limit block 32 slide against each other until the inclined surface of the right-angle trapezoidal block 37 contacts the limit block 32 (as shown in FIG. Figure 6 As shown in the figure), the wedge-shaped plate 36 will rotate in the opposite direction by a certain angle, and the extrusion column 38 will be driven to move in the opposite direction synchronously during the reverse movement of the L-shaped plate 31. At this time, cement mortar is continuously injected into the feeding pipe 9 through an external cement pump. These cement mortars will pass through the circular cavity 42 and the one-way discharge hole 39 into the hole groove formed by the extrusion column 38, and will be subsequently solidified to form cement support piles. Under the joint action of the cement support piles and the hard layer formed by the solidification of the silt, the effect of the soft foundation solidification treatment can be significantly improved.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stirring device for soft base treatment, comprising a stirring box (1), characterized in that: The inner wall of the mixing box (1) is penetrated by a spline shaft (3) rotatably connected thereto, the side wall of the spline shaft (3) is penetrated by a plurality of mixing plates (5) fixedly connected thereto, the inner wall of the spline shaft (3) is provided with a circulation groove (24), the inner wall of each mixing plate (5) is provided with a matching groove (21) connected to the circulation groove (24), the side wall of the mixing plate (5) is embedded with a plurality of spray heads (22) connected to the matching groove (21), the inner wall of the mixing box (1) is provided with a motor (20), the output end of the motor (20) is fixedly connected to a worm (12), The inner side wall of the mixing box (1) is rotatably connected to a worm gear (14) via a circular shaft (13); one end of the circular shaft (13) is fixedly connected to a cross bar (23); the other end of the cross bar (23) is rotatably connected to a push rod (16) via a round pin (15); the inner side wall of the mixing box (1) is rotatably connected to a matching gear (19) via a cylinder (18); the side wall of the cylinder (18) is fixedly connected to a matching rod (17); the other end of the matching rod (17) is rotatably connected to the push rod (16); and the side wall of the spline shaft (3) is fixedly connected to a plurality of annular teeth (4); A support mechanism for improving the soft foundation treatment effect is provided inside the mixing box (1).

2. A stirring device for soft foundation treatment according to claim 1, characterized in that: The support mechanism comprises a slide plate (26) slidably connected to the inner wall of the mixing box (1); a slide groove (27) is provided on the side wall of the slide plate (26); an L-shaped plate (31) is slidably connected inside the slide groove (27); a limit block (32) is fixedly connected to the side wall of the L-shaped plate (31); a support block (28) is fixedly connected to the side wall of the slide plate (26); a wedge block (33) is fixedly connected to the side wall of the support block (28); a slide column (29) is slidably connected through the inner wall of the support block (28); one end of the slide column (29) is fixedly connected to the L-shaped plate (31); one end of the L-shaped plate (31) is fixedly connected to a return spring (30); and the other end of the return spring (30) is fixedly connected to the inner wall of the support block (28).

3. A stirring device for soft foundation treatment according to claim 2, characterized in that: The support mechanism further comprises a round rod (34) connected to the inner wall of the mixing box (1) in a limited rotational manner, the side wall of the round rod (34) being fixedly connected to a wedge-shaped plate (36), the side wall of the wedge-shaped plate (36) being fixedly connected to a right-angled trapezoidal block (37), one end of the L-shaped plate (31) passing through the inner wall of the mixing box (1) and being fixedly connected to an extrusion column (38), the inner wall of the extrusion column (38) being penetrated by a round cavity (42).

4. A stirring device for soft foundation treatment according to claim 3, characterized in that: A plurality of one-way discharge holes (39) communicating with the circular cavity (42) are formed on a side wall of one end of the extrusion column (38); a groove (6) is formed on a side wall of the slide plate (26); a plurality of magnetic springs (7) are fixedly connected to the inner wall of the groove (6); and a rack (8) is fixedly connected to the other end of the magnetic springs (7).

5. A stirring device for soft foundation treatment according to claim 4, characterized in that: The rack (8) and the inner wall of the groove (6) slide against each other, and the rack (8) and the matching gear (19) are meshingly connected.

6. A stirring device for soft foundation treatment according to claim 3, characterized in that: A torsion spring (35) is sleeved and fixedly connected to the side wall of the round rod (34), and the other end of the torsion spring (35) is fixedly connected to the inner wall of the mixing box (1).

7. A stirring device for soft foundation treatment according to claim 3, characterized in that: The right-angled trapezoidal block (37) and the side wall of the L-shaped plate (31) slide against each other, and the right-angled trapezoidal block (37) contacts the limit block (32) after sliding for a certain distance.

8. A stirring device for soft foundation treatment according to claim 3, characterized in that: The bottom end of the extrusion column (38) is in a truncated cone-shaped structure, and a feeding pipe (9) is fixedly passed through the top end of the extrusion column (38). The feeding pipe (9) passes through the L-shaped plate (31), and the feeding pipe (9) is fixedly connected to an external cement pump.

9. A stirring device for soft foundation treatment according to claim 1, characterized in that: A rotating joint (41) is fixedly mounted on one end of the spline shaft (3) away from the plurality of stirring plates (5); the other end of the rotating joint (41) is fixedly connected to an external spraying pipe; a first gear (40) is fixedly connected to the side wall of the worm (12); a support plate (43) is fixedly connected to the inner side wall of the stirring box (1); a second gear (25) is rotatably connected to the side wall of the support plate (43); the spline shaft (3) and the second gear (25) are keyed to each other; and the second gear (25) and the first gear (40) are meshed to each other.

10. A stirring device for soft foundation treatment according to claim 9, characterized in that: The top wall of the mixing box (1) is fixedly connected to a connecting frame (2), the worm (12) and the worm wheel (14) are meshingly connected, and the matching gear (19) and the plurality of annular teeth (4) are meshingly connected.

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