A vacuum preloading soft soil foundation device

Abstract

The present invention discloses a vacuum preloading soft soil foundation device, the structure of which includes a bottom plate, a support box, a cover plate, and a storage tank. The upper end of the bottom plate is welded to the lower end of the storage tank, the inner side of the support box is fixedly connected to the outer side of the storage tank, and the lower end of the cover plate is fixedly connected to the upper end of the storage tank. The fixed foundation device is placed in the soil layer, and a channel is dug, so that the guide ring in the support frame between the support plate and the connecting frame slides and extends along with the slider outside the top plate in the abutment ring. The guide ring pushes the guide ring and the clamping ring in the chuck to extend, so that the abutting column at the front end of the top frame bends to clamp the soil, the elastic block in the clamping plate contacts the soil, and the arc block abuts against the arc groove at the upper end of the push block for support. The arc groove pushes the ejector rod to abut against the connecting plate for fixation, so that the support frame lifts the storage tank, preventing the bottom plate from tilting due to the depression of the soft soil, resulting in cracking at the corners of the surface of the sealing film and air entering the vacuum box, reducing the reinforcement effect of the soft soil foundation.

Description

Technical Field

[0001] The present invention belongs to the field of preloading soft soil, and particularly relates to a vacuum preloading soft soil foundation device. Background Art

[0002] The double-layer vacuum preloading method is a method of laying a sand cushion layer and a sealing film on the surface of a soft soil foundation, using a vacuum pump to extract the air above the upper end of the device bottom plate, and forming a vacuum load state in the inner pipeline of the device to extrude and reinforce the soft soil foundation, so as to increase the effective stress of the foundation.

[0003] Based on the above description, the inventor of the present invention found that the existing vacuum preloading soft soil foundation device mainly has the following deficiencies. For example, during rainy days, rainwater penetrates through the ground soil layer and absorbs and mixes with part of the soil layer at the lower end of the bottom plate. The mixed soil is prone to softening, and the weight of the soft soil foundation squeezes the soft soil to form subsidence. The top tilts and pulls the sealing film at the tilted angle, resulting in cracking at the corners of the sealing film surface, and air enters the vacuum box, reducing the reinforcement effect of the soft soil foundation. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a vacuum preloading soft soil foundation device to solve the problems of the prior art.

[0005] The technical solution adopted by the present invention to achieve the technical purpose is as follows: The vacuum preloading soft soil foundation device has a structure including a bottom plate, a support box, a cover plate, a storage tank, and a pressure pipe. The upper end of the bottom plate is welded and connected to the lower end of the storage tank. The inner side of the support box is fixedly connected to the outer side of the storage tank. The lower end of the cover plate is fixedly connected to the upper end of the storage tank. The pressure pipe is arranged inside the storage tank for extrusion cooperation.

[0006] As a further improvement of the present invention, the support box is provided with a support plate, a connecting frame, a support frame, a resisting ring, and a clamping groove. The inner side of the support plate is fixed to the outer side of the connecting frame. The inner side of the connecting frame is fixedly embedded in the outer side of the resisting ring. The outer side of the support frame is engaged with the inner side of the resisting ring. The rear end of the resisting ring is in contact with the front end of the clamping groove. The rear end of the support plate is fixedly embedded and connected to the front end of the storage tank. There are three connecting frames, which are vertically distributed.

[0007] As a further improvement of the present invention, the support frame is provided with a chuck, a top plate, a runner, a slider, and a guide ring. The inner side of the chuck is engaged with the outer side of the runner. The inner side of the top plate is welded to the outer side of the guide ring. The rear end of the runner is connected to the front end of the guide ring. The inner side of the slider is fixedly embedded in the outer side of the top plate. The outer side of the slider is engaged with the inner side of the resisting ring. There are six sliders, which are annularly distributed. The sliders are arc-shaped.

[0008] As a further improvement of the present invention, a clamping plate, a guide ring, a clamping ring, a top frame, and a resisting column are provided inside the chuck. The rear end of the clamping plate is riveted to the front end of the resisting column. The inner side of the guide ring is fixed to the outer side of the clamping ring. The outer side of the clamping ring is fixedly connected to the inner side of the resisting column. The rear end of the top frame is welded to the front end of the guide ring. The rear end of the resisting column is movably clamped to the front end of the top frame. The inner side of the clamping ring is connected to the outer side of the runner. A clamping column is provided at the rear end of the resisting column, and a rotating rod is provided inside the resisting column.

[0009] As a further improvement of the present invention, a resisting block, an arc plate, a connecting plate, a top rod, and an arc groove are provided inside the clamping plate. The upper end of the resisting block is clamped to the lower end of the arc groove. The lower end of the arc plate is fixed to the upper end of the arc groove. The lower end of the connecting plate is fixedly embedded in the upper end of the arc plate. The upper end of the top rod is riveted to the lower end of the connecting plate. The lower end of the top rod is clamped to the upper end of the arc groove. The rear end of the connecting plate is riveted to the front end of the resisting column. There are two top rods, which are symmetrically distributed.

[0010] As a further improvement of the present invention, a pushing block, a top block, an arc block, and an elastic block are provided inside the resisting block. The inner side of the pushing block is connected to the outer side of the arc block. The lower end of the top block is fitted to the upper end of the arc block. The elastic block is fixedly connected to the lower end of the arc block. The upper end of the pushing block is fixedly embedded in the lower end of the arc groove. There are two elastic blocks, which are symmetrically distributed. The elastic blocks are arc-shaped.

[0011] As a further improvement of the present invention, a clamping plate, a connecting rod, a clamping ring, a pressing plate, and an interface are provided inside the clamping groove. The outer side of the clamping plate is connected to the inner side of the interface. The inner side of the connecting rod is fixedly connected to the outer side of the clamping ring. The inner side of the clamping ring is riveted to the outer side of the interface. The inner side of the pressing plate is fixedly embedded in the outer side of the connecting rod. The front end of the pressing plate is fitted to the rear end of the resisting ring. There are two clamping plates, which are symmetrically distributed.

[0012] As a further improvement of the present invention, a pushing plate, a pressing ring, a pressing strip, a guiding strip, and a guiding port are provided inside the clamping plate. The outer side of the pushing plate is clamped to the inner side of the pressing strip. The inner side of the pressing ring is welded to the outer side of the pressing strip. The rear end of the pressing strip is in clearance fit with the front end of the guiding strip. The guiding port and the guiding strip are of an integral structure. The outer side of the pressing ring is connected to the inner side of the interface. The guiding port is in the shape of a groove. There are two pushing plates, which are symmetrically distributed.

[0013] As a further improvement of the present invention, a top strip, a pushing strip, a pushing frame, and an elastic strip are provided inside the clamping plate. The right end of the top strip is connected to the left end of the pushing strip. The outer side of the pushing frame is fixedly embedded in the inner side of the pushing strip. The left end of the elastic strip is connected to the right end of the pushing strip. The left end of the top strip is clamped to the right end of the pressing strip. There are two elastic strips, which are symmetrically distributed. There are eight gaps on the elastic strip, which are arc-shapedly distributed. The elastic strip is made of rubber and has elasticity.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. Place the fixed foundation device in the soil layer, dig a channel, and make the guide ring in the support frame between the support plate and the connecting frame slide and extend in the abutment ring along with the slider on the outside of the top plate. The guide ring pushes the guide ring and the clamping ring in the chuck to extend, so that the abutment column at the front end of the top frame is bent and stuck in the soil. The elastic block in the splint contacts the soil, so that the arc block is against the arc groove at the upper end of the push block for support. The arc groove pushes the top rod to press against the connecting plate for fixation, so that the support frame raises the storage tank to prevent the bottom plate from tilting as the soft soil sinks, causing the edges and corners of the closed membrane surface to crack, and air to enter the vacuum box, resulting in reduced reinforcement effect of the soft soil foundation.

[0016] 2. After the closing film is covered on the cover plate, the buckles at the corners of the closing film are inserted into the connecting rod and the card plate inside the clamping ring, so that the buckles squeeze and contract the elastic strips, and the elastic strips press against the push strips, so that the push strips push the push frame against the top strip for support, and the top strip presses against the pressure strip inside the pressure ring. The buckles are tightly attached to the push plate and the guide port for fixation, preventing the corners of the closing film from escaping from the storage slot, causing the closing film to crack, and resulting in reduced sealing effect of the closing film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 This is a structural schematic diagram of a vacuum preloading soft soil foundation device of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the support box of the present invention from a side view;

[0020] Figure 3 This is a schematic structural diagram of the support frame of the present invention from the front;

[0021] Figure 4 This is a schematic structural diagram of the front view of the chuck of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the present invention's splint viewed from the front;

[0023] Figure 6 This is a schematic structural diagram of the front view of the block of the present invention;

[0024] Figure 7 This is a structural schematic diagram of the card slot of the present invention from the front;

[0025] Figure 8 This is a schematic structural diagram of the front view of the card board of the present invention;

[0026] Figure 9 This is a schematic structural diagram of the push plate of the present invention from the front;

[0027] In the figure: bottom plate - 1, support box - 2, cover plate - 3, storage tank - 4, pressure pipe - 5, support plate - 21, connecting frame - 22, support frame - 23, abutting ring - 24, card slot - 25, chuck - 231, top plate - 232, runner - 233, slider - 234, guide ring - 235, clamping plate - a1, guide ring - a2, clamping ring - a3, top frame - a4, abutting column - a5, abutting block - a11, arc plate - a12, connecting plate - a13, ejector rod - a14, arc groove - a15, push block - b1, top block - b2, arc block - b3, elastic block - b4, clamping plate - 251, connecting rod - 252, clamping ring - 253, pressure plate - 254, interface - 255, push plate - c1, pressure ring - c2, pressure strip - c3, guide strip - c4, guide port - c5, top strip - c11, push strip - c12, push frame - c13, elastic strip - c14. Detailed implementation mode

[0028] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0029] Embodiment 1

[0030] As shown in the attached Figure 1 to the attached Figure 6 shown:

[0031] The present invention provides a vacuum preloading soft soil foundation device, the structure of which includes a bottom plate 1, a support box 2, a cover plate 3, a storage tank 4, and a pressure pipe 5. The upper end of the bottom plate 1 is welded and connected to the lower end of the storage tank 4. The inner side of the support box 2 is fixedly connected to the outer side of the storage tank 4. The lower end of the cover plate 3 is fixedly connected to the upper end of the storage tank 4. The pressure pipe 5 is arranged inside the storage tank 4 for extrusion cooperation.

[0032] Among them, the support box 2 is provided with a support plate 21, a connecting frame 22, a support frame 23, an abutting ring 24, and a card slot 25. The inner side of the support plate 21 is fixed to the outer side of the connecting frame 22. The inner side of the connecting frame 22 is fixedly embedded in the outer side of the abutting ring 24. The outer side of the support frame 23 is engaged with the inner side of the abutting ring 24. The rear end of the abutting ring 24 is in contact with the front end of the card slot 25. The rear end of the support plate 21 is fixedly embedded and connected to the front end of the storage tank 4. The connecting frame 22 has three and is vertically distributed, so that the support frame 23 inside the abutting ring 24 can maintain balance.

[0033] Among them, a chuck 231, a top plate 232, a runner 233, a slider 234, and a guide ring 235 are provided inside the support frame 23. The inner side of the chuck 231 is clamped to the outer side of the runner 233. The inner side of the top plate 232 is welded to the outer side of the guide ring 235. The rear end of the runner 233 is connected to the front end of the guide ring 235. The inner side of the slider 234 is embedded and fixed to the outer side of the top plate 232. The outer side of the slider 234 is clamped to the inner side of the abutting ring 24. There are six sliders 234, which are distributed in a ring shape. The slider 234 is arc-shaped, enabling the chuck 231 to rotate stably inside the slider 234.

[0034] Among them, a clamping plate a1, a guide ring a2, a clamping ring a3, a top frame a4, and an abutting column a5 are provided inside the chuck 231. The rear end of the clamping plate a1 is riveted to the front end of the abutting column a5. The inner side of the guide ring a2 is fixed to the outer side of the clamping ring a3. The outer side of the clamping ring a3 is embedded and fixed to the inner side of the abutting column a5. The rear end of the top frame a4 is welded to the front end of the guide ring a2. The rear end of the abutting column a5 is movably clamped to the front end of the top frame a4. The inner side of the clamping ring a3 is connected to the outer side of the runner 233. A clamping column is provided at the rear end of the abutting column a5, and a rotating rod is provided inside the abutting column a5, enabling the abutting column a5 to support against the groove of the top frame a4 after rotating and retracting.

[0035] Among them, an abutting block a11, an arc plate a12, a connecting plate a13, a top rod a14, and an arc groove a15 are provided inside the clamping plate a1. The upper end of the abutting block a11 is clamped to the lower end of the arc groove a15. The lower end of the arc plate a12 is fixed to the upper end of the arc groove a15. The lower end of the connecting plate a13 is embedded and fixed to the upper end of the arc plate a12. The upper end of the top rod a14 is riveted to the lower end of the connecting plate a13. The lower end of the top rod a14 is clamped to the upper end of the arc groove a15. The rear end of the connecting plate a13 is riveted to the front end of the abutting column a5. There are two top rods a14, which are symmetrically distributed, enabling the abutting block a11 to be fixed when pushing the arc groove a15, the abutting column, and the top rod a14.

[0036] Among them, a pushing block b1, a top block b2, an arc block b3, and a spring block b4 are provided inside the abutting block a11. The inner side of the pushing block b1 is connected to the outer side of the arc block b3. The lower end of the top block b2 is fitted to the upper end of the arc block b3. The spring block b4 is fixedly connected to the lower end of the arc block b3. The upper end of the pushing block b1 is embedded and fixed to the lower end of the arc groove a15. There are two spring blocks b4, which are symmetrically distributed. The spring block b4 is arc-shaped, enabling the soil fragments to fix the bottom plate 1 and the storage tank 4 after squeezing the spring block b4.

[0037] The specific usage method and function of this embodiment:

[0038] In the present invention, the fixed foundation device is placed in the soil layer, and a channel is dug so that the guide ring 235 in the support frame 23 between the support plate 21 and the connecting frame 22 slides and extends in the abutting ring 24 along with the slider 234 on the outer side of the top plate 232. The guide ring 235 pushes the guide ring a2 in the chuck 231, and the guide ring a2 and the clamping ring a3 extend, causing the abutting column a5 at the front end of the top frame a4 to bend and clamp the soil. The elastic block b4 in the clamping plate a1 contacts the soil and contracts, causing the arc block b3 to abut against the arc groove a15 at the upper end of the push block b1 for support. The arc groove a15 pushes the ejector rod a14, causing the top frame a14 to abut against the connecting plate a13 for fixation. The support frame 23 holds up the storage tank 4 to form a parallel state, preventing the bottom plate from tilting due to depression in the soft soil, resulting in cracking at the corners of the surface of the sealing film and allowing air to enter the vacuum chamber, reducing the reinforcement effect of the soft soil foundation.

[0039] Embodiment 2

[0040] As shown in the appended Figure 7 to the appended Figure 9 figures:

[0041] The present invention provides a vacuum preloading soft soil foundation device. The clamping groove 25 is provided with a clamping plate 251, a connecting rod 252, a clamping ring 253, a pressing plate 254, and an interface 255. The outer side of the clamping plate 251 is connected to the inner side of the interface 255. The inner side of the connecting rod 252 is fixedly connected to the outer side of the clamping ring 253. The inner side of the clamping ring 253 is riveted to the outer side of the interface 255. The inner side of the pressing plate 254 is fixedly connected to the outer side of the connecting rod 252. The front end of the pressing plate 254 abuts against the rear end of the abutting ring 24. There are two clamping plates 251, which are symmetrically distributed, enabling the sealing film to be fixed on the clamping plate 251 for reinforcement.

[0042] Among them, the clamping plate 251 is provided with a push plate c1, a pressing ring c2, a pressing strip c3, a guiding strip c4, and a guiding port c5. The outer side of the push plate c1 is clamped inside the pressing strip c3. The inner side of the pressing ring c2 is welded to the outer side of the pressing strip c3. The rear end of the pressing strip c3 is in clearance fit with the front end of the guiding strip c4. The guiding port c5 and the guiding strip c4 are of an integral structure. The outer side of the pressing ring c2 is connected to the inner side of the interface 255. The guiding port c5 is in the shape of a groove. There are two push plates c1, which are symmetrically distributed, enabling the buckle at the corner of the sealing film to abut against the guiding port c5 and the push plate c1 for fixation.

[0043] Among them, a top bar c11, a push bar c12, a push frame c13, and a spring bar c14 are provided inside the clamping plate c1. The right end of the top bar c11 is connected to the left end of the push bar c12. The outer side of the push frame c13 is fixedly embedded in the inner side of the push bar c12. The left end of the spring bar c14 is connected to the right end of the push bar c12. The left end of the top bar c11 is clamped to the right end of the pressure bar c3. There are two spring bars c14, which are symmetrically distributed. There are eight notches on the spring bar c14, which are arc-shaped. The spring bar c14 is made of rubber and has elasticity, so that the sealing film will not be damaged by friction after squeezing the spring bar c14.

[0044] Specific usage method and function of this embodiment:

[0045] In the present invention, after the sealing film covers the cover plate 3, the buckle at the corner of the sealing film is inserted into the clamping plate 251 inside the connecting rod 252 and the clamping ring 253 to make contact, so that the buckle squeezes the spring bar c14. The spring bar c14 contracts and abuts against the push bar c12, causing the push bar c12 to push the push frame c13. The push frame c13 abuts against the top bar c11 for support. The top bar c11 abuts against the pressure bar c3 inside the pressure ring c2. The buckle closely adheres to the guide port c5 inside the push plate c1 and the guide bar c4 for fixation, so that the buckle at the corner of the sealing film is fixed in the card slot 25, preventing the corner of the sealing film from detaching from the storage slot, resulting in cracking of the sealing film and reducing the sealing effect of the sealing film.

[0046] The present invention solves the problems of the prior art. Through the mutual combination of the above components, when used in this way, it prevents the bottom plate from sinking with the soft soil and forming an inclination, resulting in cracking of the surface corners of the sealing film and air entering the vacuum box, reducing the reinforcement effect of the soft soil foundation. It also prevents the corners of the sealing film from detaching from the storage slot, resulting in cracking of the sealing film and reducing the sealing effect of the sealing film.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum preloading soft soil foundation device, the structure of which includes a base plate (1), a support box (2), a cover plate (3), a storage tank (4), and a pressure pipe (5), wherein the upper end of the base plate (1) is welded to the lower end of the storage tank (4), the inner side of the support box (2) is embedded and connected to the outer side of the storage tank (4), the lower end of the cover plate (3) is fixedly connected to the upper end of the storage tank (4), and the pressure pipe (5) is arranged on the inner side of the storage tank (4) for extrusion fit; characterized in that: The support box (2) is provided with a support plate (21), a connecting frame (22), a support frame (23), a collar (24), and a slot (25). The inner side of the support plate (21) is fixed to the outer side of the connecting frame (22). The inner side of the connecting frame (22) is embedded in the outer side of the collar (24). The outer side of the support frame (23) is engaged with the inner side of the collar (24). The rear end of the collar (24) is in contact with the front end of the slot (25). The rear end of the support plate (21) is embedded and connected to the front end of the storage tank (4). The support frame (23) is provided with a chuck (231), a top plate (232), a rotating wheel (233), a slider (234), and a guide ring (235); the inner side of the chuck (231) is engaged with the outer side of the rotating wheel (233); the inner side of the top plate (232) is welded to the outer side of the guide ring (235); the rear end of the rotating wheel (233) is connected to the front end of the guide ring (235); the inner side of the slider (234) is embedded in the outer side of the top plate (232); and the outer side of the slider (234) is engaged with the inner side of the abutment ring (24); The chuck (231) is provided with a clamping plate (a1), a guide ring (a2), a snap ring (a3), a top frame (a4), and a support column (a5); the rear end of the clamping plate (a1) is riveted to the front end of the support column (a5); the inner side of the guide ring (a2) is fixed to the outer side of the snap ring (a3); the outer side of the snap ring (a3) is embedded and connected to the inner side of the support column (a5); the rear end of the top frame (a4) is welded to the front end of the guide ring (a2); the rear end of the support column (a5) is movably clamped to the front end of the clamping ring (a4); and the inner side of the snap ring (a3) is connected to the outer side of the rotating wheel (233); The splint (a1) is provided with a stop block (a11), an arc plate (a12), a connecting plate (a13), a push rod (a14), and an arc groove (a15); the upper end of the stop block (a11) is engaged with the lower end of the arc groove (a15); the lower end of the arc plate (a12) is fixed to the upper end of the arc groove (a15); the lower end of the connecting plate (a13) is embedded in the upper end of the arc plate (a12); the upper end of the push rod (a14) is riveted to the lower end of the connecting plate (a13); the lower end of the push rod (a14) is engaged with the upper end of the arc groove (a15); the rear end of the connecting plate (a13) is riveted to the front end of the stop column (a5); The said stop block (a11) is provided with a push block (b1), a top block (b2), an arc block (b3), and an elastic block (b4); the inner side of the said push block (b1) is connected to the outer side of the arc block (b3); the lower end of the said top block (b2) is fitted with the upper end of the arc block (b3); the said elastic block (b4) is fixedly connected to the lower end of the arc block (b3); the upper end of the said push block (b1) is embedded in the lower end of the arc groove (a15); The vacuum preloading soft soil foundation device is placed in the soil layer and a channel is dug, so that the guide ring (235) in the support frame (23) between the support plate (21) and the connecting frame (22) slides and stretches in the support ring (24) along with the slider (234) outside the top plate (232), the guide ring (235) pushes the guide ring (a2) in the chuck (231), the guide ring (a2) and the clamping ring (a3) are stretched, so that the support column (a5) at the front end of the top frame (a4) is bent and clamped to the soil, the elastic block (b4) in the clamping plate (a1) contacts with the soil and shrinks, so that the arc block (b3) is supported against the arc groove (a15) at the upper end of the push block (b1), the arc groove (a15) pushes the push rod (a14), so that the push rod (a14) is fixed against the connecting plate (a13), and the support frame (23) sets up the storage tank (4) to form a parallel state.

2. The vacuum preloading soft soil foundation device according to claim 1, characterized in that: The clamping slot (25) is provided with a clamping plate (251), a connecting rod (252), a clamping ring (253), a pressure plate (254), and an interface (255); the outer side of the clamping plate (251) is connected to the inner side of the interface (255); the inner side of the connecting rod (252) is fixedly connected to the outer side of the clamping ring (253); the inner side of the clamping ring (253) is riveted to the outer side of the interface (255); the inner side of the pressure plate (254) is embedded and fixedly connected to the outer side of the connecting rod (252); and the front end of the pressure plate (254) is in contact with the rear end of the abutment ring (24).

3. The vacuum preloading soft soil foundation device according to claim 2, characterized in that: The clamping plate (251) is provided with a push plate (c1), a pressure ring (c2), a pressure strip (c3), a guide strip (c4), and a guide port (c5); the outer side of the push plate (c1) is engaged with the inner side of the pressure strip (c3); the inner side of the pressure ring (c2) is welded to the outer side of the pressure strip (c3); the rear end of the pressure strip (c3) and the front end of the guide strip (c4) are clearance-matched; the guide port (c5) and the guide strip (c4) are an integrated structure; the outer side of the pressure ring (c2) is connected to the inner side of the interface (255).

4. The vacuum preloading soft soil foundation device according to claim 3, characterized in that: The push plate (c1) is provided with a top bar (c11), a push bar (c12), a push frame (c13), and an elastic bar (c14). The right end of the top bar (c11) is connected to the left end of the push bar (c12). The outer side of the push frame (c13) is embedded in the inner side of the push bar (c12). The left end of the elastic bar (c14) is connected to the right end of the push bar (c12). The left end of the top bar (c11) is engaged with the right end of the pressure bar (c3). After the closing film is covered on the cover plate (3), the buckle at the corner of the closing film is inserted into the connecting rod (252) and contacts the clamping plate (251) inside the clamping ring (253), so that the buckle squeezes the elastic bar (c14), and the elastic bar (c14) contracts and presses against the push bar (c12), so that the push bar (c12) pushes the push frame (c13), and the push frame (c13) presses against the top bar (c11) for support, and the top bar (c11) presses against the pressure bar (c3) inside the pressure ring (c2), and the buckle is tightly attached to the guide port (c5) inside the push plate (c1) and the guide bar (c4) to be fixed, so that the buckle at the corner of the closing film is fixed in the clamping groove (25).

Images