A foundation pit protection device for municipal construction and its operation method

Abstract

The present invention belongs to the field of foundation pit protection, specifically a foundation pit protection device for municipal construction, comprising a base plate, a water storage chamber provided inside the base plate, a first water inlet provided on the top of the base plate, a second water inlet provided on the top of the base plate and on a side away from the first water inlet, the first water inlet and the second water inlet both being communicated with the water storage chamber; the present invention provides a foundation pit protection device for municipal construction and an operation method thereof, wherein the middle clamping seat is displaced and pulled in conjunction with the other two clamping seats to form an arc-shaped released waterproof curtain, the waterproof curtain is used to block the inclined surface on the foundation pit wall to prevent rainwater from scouring the foundation pit wall and causing soil landslide, the water storage chamber is used to collect rainwater on the waterproof curtain to prevent rainwater flowing along the inclined surface of the foundation pit wall from being directly discharged into the foundation pit, and excessive penetration into the soil on one side of the base plate is prevented, thereby affecting the firmness of the base plate installation.

Description

Technical Field

[0001] The present invention belongs to the field of foundation pit protection, in particular to a foundation pit protection device for municipal construction and an operating method thereof. Background Art

[0002] During the excavation process, the foundation pit will inevitably cause deformation of the surrounding soil and affect the underground pipelines of surrounding buildings. In serious cases, it will endanger the normal use and safety of the underground pipelines. In order to avoid this situation, a foundation pit support structure will be set up during the foundation pit design and excavation construction to stabilize the safety of the foundation pit.

[0003] In order to ensure the stability of the foundation pit, the pit wall of the foundation pit is usually excavated into an inclined shape, and the pit wall of the foundation pit is supported by piles, composite soil nail walls, hanging nets, etc. However, when it rains heavily in summer, with the impact of rainwater, the flow rate of rainwater on the inclined surface of the pit wall becomes faster and faster, causing the soil to be lost, affecting the stability of the pit wall structure. The existing technology cannot avoid the erosion of the pit wall by rainwater, and as the rainwater is immersed in the soil, the infiltration of rainwater will increase the pore water pressure of the soil and reduce the effective stress between soil particles, causing the soil near the pit wall to lose its grip, thereby making the entire pit wall prone to collapse. In addition, as the ground water level rises, rainwater on the surrounding ground can easily cause backflow into the pit. While draining, it will not only cause the pit wall to collapse, but also cause the water level inside the pit to be too high to handle.

[0004] To this end, the present invention provides a foundation pit protection device for municipal construction and an operating method thereof. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology and solve the problem that when it rains heavily in summer, the flow rate of rainwater on the inclined surface of the foundation pit wall becomes faster and faster with the impact of rainwater, resulting in the loss of soil and affecting the stability of the foundation pit wall structure, the existing technology cannot avoid the scouring of the foundation pit wall by rainwater, and as the rainwater is immersed in the soil, the infiltration of rainwater will increase the pore water pressure of the soil and reduce the effective stress between soil particles, causing the soil near the foundation pit wall to lose its grip, and then making the entire foundation pit wall prone to collapse. In addition, as the ground water level increases, rainwater on the surrounding ground can easily cause backflow into the foundation pit, which will not only cause the foundation pit wall to collapse while draining, but also cause the water level inside the foundation pit to be too high and difficult to handle. The present invention proposes a foundation pit protection device for municipal construction and an operating method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention describes a foundation pit protection device for municipal construction, comprising a base plate, a water storage chamber is provided inside the base plate, a first water inlet is provided on the top of the base plate, a second water inlet is provided on the top of the base plate and on a side away from the first water inlet, the first water inlet and the second water inlet are both communicated with the water storage chamber, the top of the base plate is fixedly connected to a first mounting frame, the inner wall of the first mounting frame is rotatably connected to a first baffle, the top of the first baffle is provided with a folding guard plate, the top of the folding guard plate is provided with a second baffle, the outer wall of the second baffle is rotatably connected to a second mounting frame, the top of the second mounting frame is fixedly connected to a top plate, and the bottoms of the base plate and the top plate are both fixedly connected to limiting anchor rods.

[0007] Preferably, the top plate is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a winding roller, the outer wall of the winding roller is wrapped with a waterproof curtain, one end of the waterproof curtain passes through the top plate, and a fixing component is provided on the top of the bottom plate.

[0008] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is hinged on the base plate, is fixed with a backing pin on the interlocking structure, and an end of sliding panel withstands on the backing pin of interlocking structure.

[0009] Preferably, two mounting plates are symmetrically fixedly connected to one side of the top plate, a fixing plate is fixedly connected between the two mounting plates, the inner wall of the fixing plate is slidably connected to a first sliding shaft, the top of the first sliding shaft is fixedly connected to a limiting block, the bottom of the first sliding shaft is fixedly connected to a fixing frame, the inner wall of the fixing frame is rotatably connected to a pulley, the outer wall of the first sliding shaft is sleeved with a first spring, the top of the first spring is fixedly connected to the fixing plate, the bottom of the first spring is fixedly connected to the fixing frame, a support plate is fixedly connected between the two mounting plates and below the pulley, the support plate is arranged in an arc shape, and the waterproof curtain passes between the pulley and the support plate.

[0010] Preferably, a second cavity is provided inside the first baffle, a liquid outlet trough is provided at the bottom of the first baffle, the liquid outlet trough is located above the second water inlet, a first cavity is provided inside the second baffle, a connecting pipe is provided between the first cavity and the second cavity, and a water absorption component is provided on one side of the second baffle.

[0011] Preferably, the water absorption assembly includes a plurality of rods, and the plurality of rods are fixedly installed at equal distances on the outer wall of the second baffle. The top and bottom of the rods are provided with water inlet grooves, the inner wall of the water inlet groove is fixedly connected to the first filter plate, the inner wall of the rod is provided with a cylindrical sponge pad, the outer wall of the cylindrical sponge pad is fixedly connected to an annular sponge pad, the annular sponge pad fits the first filter plate, the inner wall of the rod is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected to an extrusion plate, the inside of the rod is provided with a water outlet groove, and the water outlet groove is communicated with the first cavity.

[0012] Preferably, the inner wall of the insertion rod is slidably connected to a top ring, a sliding groove for cooperating with the top ring is opened inside the insertion rod, one side of the annular sponge pad is set as an annular inclined surface, the inner wall of the top ring is fixedly connected to a connecting plate, the connecting plate is slidably connected to the insertion rod, and a connecting shaft is fixedly connected between the connecting plate and the extrusion plate.

[0013] Preferably, a slide plate is fixedly connected to the side of the cylindrical sponge pad away from the water outlet trough, and two third sliding shafts are symmetrically fixedly connected to the outer wall of the slide plate. The third sliding shaft is arranged on the inner wall of the cylindrical sponge pad and is connected to the sliding connection. One end of the third sliding shaft is fixedly connected to a third spring, and the third spring is fixedly connected to the insertion rod.

[0014] Preferably, a water storage tank is provided on the top of the top plate, a second filter plate is fixedly connected to the inner wall of the water storage tank, the bottom of the water storage tank passes through the top plate, the bottom of the water storage tank is set as an inclined surface, and a liquid inlet tank is provided on the top of the second baffle and below the water storage tank.

[0015] An operating method for a foundation pit protection device for municipal construction is provided. The operating method is applicable to the above-mentioned foundation pit protection device for municipal construction. The operating method steps are as follows:

[0016] S1: Install the bottom plate at the bottom of the foundation pit and the top plate at the top of the foundation pit, and protect the pit wall by folding the guard plate to fit the pit wall;

[0017] S2: Pull out the waterproof curtain on the winding roller and fix it through the clamping seat to block the inclined surface on the foundation pit wall;

[0018] S3: Insert the rod into the slope of the foundation pit wall, use the cylindrical sponge pad and the annular sponge pad to absorb the rainwater that penetrates into the soil, start the electric telescopic rod to control the movement of the extrusion plate to squeeze out the cylindrical sponge pad and the annular sponge pad.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention describes a foundation pit protection device for municipal construction and an operating method thereof. By dislocating the middle clamping seat and cooperating with the pulling of the other two clamping seats, the released waterproof curtain is formed into an arc. The waterproof curtain blocks the inclined surface on the foundation pit wall to prevent rainwater from scouring the foundation pit wall and causing soil landslides. The water storage chamber collects rainwater on the waterproof curtain to prevent rainwater flowing along the inclined surface of the foundation pit wall from being directly discharged into the foundation pit, thereby preventing rainwater from excessively penetrating into the soil on one side of the bottom plate and affecting the firmness of the bottom plate installation.

[0021] 2. The present invention describes a foundation pit protection device for municipal construction and an operating method thereof. A first spring is provided to press the pulley downward, and in conjunction with an arc-shaped support plate, the waterproof curtain is pressed into an arc shape. The support of the waterproof curtain by the support plate stabilizes the arc-shaped waterproof curtain structure, preventing the collected rainwater from collapsing to the sides.

[0022] 3. The present invention describes a foundation pit protection device for municipal construction and an operating method thereof, which absorbs rainwater that penetrates the soil through an annular sponge pad and a cylindrical sponge pad, thereby preventing the soil near the foundation pit wall from having a high moisture content, causing the soil near the foundation pit wall to lose its grip, and then causing the entire foundation pit wall to collapse. The rainwater absorbed in the cylindrical sponge pad and the annular sponge pad can be squeezed out by the extrusion plate, so that the rainwater enters the water storage chamber uniformly, and at the same time cooperates with the top ring to seal the water inlet trough to prevent the squeezed rainwater from entering the soil again.

[0023] 4. The present invention describes a foundation pit protection device for municipal construction and an operating method thereof, which receives rainwater flowing on the ground through a water storage tank, and is guided by the inclined surface of the bottom of the water storage tank so that the rainwater is discharged into the first cavity along the liquid inlet trough, thereby processing rainwater that flows back into the foundation pit from the surrounding ground, preventing rainwater from being discharged onto the foundation pit wall, and allowing the rainwater to be concentrated in the water storage cavity and extracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a three-dimensional diagram of the bottom plate and top plate of the present invention in cooperation with each other;

[0026] Figure 2 This is a three-dimensional diagram of the bottom plate of the present invention used in conjunction with the waterproof curtain;

[0027] Figure 3This is an exploded view of the waterproof curtain of the present invention in combination with the insertion rod;

[0028] Figure 4 This is a cross-sectional view of the bottom plate and top plate of the present invention in cooperation with each other;

[0029] Figure 5 This is an exploded view of the waterproof curtain and the support frame of the present invention in cooperation;

[0030] Figure 6 This is a cross-sectional view of the insertion rod of the present invention;

[0031] Figure 7 This is an exploded view of the insertion rod of the present invention used in conjunction with the cylindrical sponge pad;

[0032] Figure 8 This invention Figure 2 Enlarged view of point A in the middle;

[0033] Figure 9 This invention Figure 4 Enlarged view of point B in the middle;

[0034] Figure 10 This invention Figure 5 Enlarged view of point C in the middle;

[0035] Figure 11 This invention Figure 5 Enlarged view of point D in the middle;

[0036] In the figure: 1. bottom plate; 2. first mounting frame; 3. first baffle; 4. folding guard plate; 5. second baffle; 6. second mounting frame; 7. top plate; 8. rotating shaft; 9. winding roller; 10. waterproof curtain; 11. mounting plate; 12. fixing plate; 13. supporting plate; 14. first sliding shaft; 15. limiting block; 16. first spring; 17. fixing frame; 18. pulley; 19. supporting frame; 20. clamping seat; 21. clamping plate; 22. threaded rod; 23. water storage chamber; 24. first water inlet; 25. second water inlet; 26. gear; 27. positioning plate; 28. second sliding shaft ; 29. ​​Second spring; 30. Block; 31. Movable frame; 32. Crank; 33. Rod; 34. Water inlet trough; 35. Cylindrical sponge pad; 36. Annular sponge pad; 37. First filter plate; 38. Top ring; 39. Slide; 40. Electric telescopic rod; 41. Extrusion plate; 42. Connecting shaft; 43. Connecting plate; 44. Slide plate; 45. Third slide shaft; 46. Third spring; 47. Water outlet trough; 48. First cavity; 49. Connecting pipe; 50. Water storage tank; 51. Second filter plate; 52. Liquid inlet trough; 53. Second cavity; 54. Liquid outlet trough; 55. Limit anchor rod. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] like Figures 1 to 11 As shown, the present invention provides a technical solution, a foundation pit protection device for municipal construction and an operation method thereof, comprising a base plate 1, a water storage chamber 23 is opened inside the base plate 1, a first water inlet 24 is opened on the top of the base plate 1, a second water inlet 25 is opened on the top of the base plate 1 and on the side away from the first water inlet 24, the first water inlet 24 and the second water inlet 25 are both communicated with the water storage chamber 23, a first mounting frame 2 is fixedly connected to the top of the base plate 1, a first baffle 3 is rotatably connected to the inner wall of the first mounting frame 2, a folding guard plate 4 is provided on the top of the first baffle 3, a second baffle 5 is provided on the top of the folding guard plate 4, a second baffle 5 is rotatably connected to the outer wall of the second baffle 5, a second mounting frame 6 is fixedly connected to the top of the second mounting frame 6, and a top plate 7 is fixedly connected to the bottom of the base plate 1 and the top plate 7. The bottoms of the base plate 1 and the top plate 7 are both fixedly connected to limiting anchor rods 55.

[0039] Through the above technical solution, the bottom plate 1 is installed at the bottom of the foundation pit, the top plate 7 is installed at the top of the foundation pit, and the two limiting anchor rods 55 are inserted into the foundation to make the positions of the bottom plate 1 and the top plate 7 firm, thereby improving the stability of the support structure. The folding guard plate 4 is fitted to the pit wall of the foundation pit to protect the pit wall and avoid soil collapse. The folding guard plate 4 is set to adapt to foundation pits of different depths, and the volume can be reduced after the folding guard plate 4 is folded for easy transportation.

[0040] Specifically, the top plate 7 is rotatably connected to a rotating shaft 8, and the outer wall of the rotating shaft 8 is fixedly connected to a winding roller 9, and the outer wall of the winding roller 9 is wrapped with a waterproof curtain 10, and one end of the waterproof curtain 10 passes through the top plate 7. A fixing component is provided on the top of the bottom plate 1; the fixing component includes a support frame 19, and the support frame 19 is fixedly mounted on the top of the bottom plate 1 and close to the side of the first water inlet 24. Three clamping seats 20 are fixedly connected to the top of the support frame 19 at equal intervals. The position of the clamping seat 20 in the middle is close to the folding guard plate 4. The inner wall of the clamping seat 20 is slidably connected to a splint 21, and the top of the clamping seat 20 is threadedly connected to a threaded rod 22, and the bottom of the threaded rod 22 is rotatably connected to the splint 21. One end of the rotating shaft 8 passes through the top plate 7 and is fixedly connected to a crank 32. The outer wall of the rotating shaft 8 is symmetrically fixedly connected to two gears 26. One side of the teeth on the gear 26 is set as an inclined surface, and the other side is set as a straight surface. The outer wall of the top plate 7 is symmetrically fixedly connected to two positioning plates 27. The inner wall of the positioning plate 27 is slidably connected to a second sliding shaft 28. One end of the second sliding shaft 28 is fixedly connected to a card block 30. The card block 30 is slidably connected to the top plate 7. The outer wall of the second sliding shaft 28 is sleeved with a second spring 29. One end of the second spring 29 is fixedly connected to the card block 30, and the other end of the second spring 29 is fixedly connected to the positioning plate 27. The tops of the two card blocks 30 are fixedly connected to a movable frame 31.

[0041] Through the above technical solution, after the bottom plate 1 and the top plate 7 are installed, the movable frame 31 is moved to move the two clamping blocks 30, compressing the two second springs 29. After the clamping blocks 30 move, they are separated from the gear 26. After the limit of the clamping blocks 30 is lost, the waterproof curtain 10 on the winding roller 9 is pulled to release the waterproof curtain 10. The waterproof curtain 10 blocks the inclined surface on the foundation pit wall to prevent rainwater from eroding the foundation pit wall and causing soil landslides. After the waterproof curtain 10 is pulled out, its ends are placed in the three clamping seats 20. The three threaded rods 22 are rotated to move the three threaded rods 22 downward, pushing the three clamping plates 21 downward, fixing the ends of the waterproof curtain 10 through the three clamping plates 21, and by dislocating the middle clamping seat 20 and pulling the other two clamping seats 20, the released waterproof curtain 10 forms an arc. After the ends of the waterproof curtain 10 are fixed, the movable frame 31 is released, and the two second springs 29 are used to reset the two clamping blocks 30. After the clamping blocks 30 are reset, they press against the gear 26. When rainwater flows into the waterproof curtain, the movable frame 31 is released. When the rainwater flows on the curtain 10, the block 30 presses against the straight surface on the teeth of the gear 26, so that the released waterproof curtain 10 is fixed in position, and the waterproof curtain 10 is prevented from collapsing. The rainwater falling on the waterproof curtain 10 flows to the depression in the middle, so that the falling rainwater can be concentrated on the waterproof curtain 10. When the rainwater flows to the end of the waterproof curtain 10, it enters the water storage chamber 23 along the first water inlet 24 for collection, so as to prevent the rainwater flowing along the slope of the foundation pit wall from being directly discharged into the foundation pit, causing excessive damage to the soil on one side of the bottom plate 1. Penetration affects the firmness of the installation of the base plate 1. The rainwater stored in the water storage chamber 23 can be pumped out by a water pump or other water pumping tools. After the support of the foundation pit is released, the rotating shaft 8 is driven to rotate by turning the crank 32, and the winding roller 9 is rotated to rotate the waterproof curtain 10, so that the waterproof curtain 10 can be rolled up and recycled. When the waterproof curtain 10 is rolled up, the inclined surface on the teeth of the gear 26 is pressed against the block 30. Under the pushing action of the inclined surface of the teeth, the block 30 can be pushed to move, thereby not affecting the rolling of the waterproof curtain 10.

[0042] Specifically, two mounting plates 11 are symmetrically fixedly connected to one side of the top plate 7, a fixing plate 12 is fixedly connected between the two mounting plates 11, the inner wall of the fixing plate 12 is slidably connected to a first sliding shaft 14, the top of the first sliding shaft 14 is fixedly connected to a limiting block 15, the bottom of the first sliding shaft 14 is fixedly connected to a fixing frame 17, the inner wall of the fixing frame 17 is rotatably connected to a pulley 18, the outer wall of the first sliding shaft 14 is sleeved with a first spring 16, the top of the first spring 16 is fixedly connected to the fixing plate 12, and the bottom of the first spring 16 is fixedly connected to the fixing frame 17, a support plate 13 is fixedly connected between the two mounting plates 11 and below the pulley 18, the support plate 13 is set to an arc shape, and the waterproof curtain 10 passes between the pulley 18 and the support plate 13.

[0043] Through the above technical solution, after the waterproof curtain 10 is released, the waterproof curtain 10 is passed between the pulley 18 and the support plate 13. The pulley 18 is pressed downward by the first spring 16, and the waterproof curtain 10 is pressed into an arc shape in cooperation with the arc-shaped support plate 13. The support of the waterproof curtain 10 by the support plate 13 makes the arc-shaped waterproof curtain 10 structure stable, preventing the collected rainwater from collapsing to the sides.

[0044] Specifically, a second cavity 53 is provided inside the first baffle 3, a liquid outlet 54 is provided at the bottom of the first baffle 3, and the liquid outlet 54 is located above the second water inlet 25. A first cavity 48 is provided inside the second baffle 5, and a connecting pipe 49 is provided between the first cavity 48 and the second cavity 53. A water absorption component is provided on one side of the second baffle 5; the water absorption component includes a plurality of plug rods 33, and the plurality of plug rods 33 are fixedly installed on the outer wall of the second baffle 5 at equal distances, and the top of the plug rod 33 is connected to the second baffle 5. A water inlet groove 34 is provided at the bottom, and the inner wall of the water inlet groove 34 is fixedly connected to the first filter plate 37. The inner wall of the insertion rod 33 is provided with a cylindrical sponge pad 35, and the outer wall of the cylindrical sponge pad 35 is fixedly connected to the annular sponge pad 36. The annular sponge pad 36 fits the first filter plate 37. The inner wall of the insertion rod 33 is fixedly connected to the electric telescopic rod 40, and the output end of the electric telescopic rod 40 is fixedly connected to the extrusion plate 41. The inside of the insertion rod 33 is provided with a water outlet groove 47, and the water outlet groove 47 is communicated with the first cavity 48.

[0045] Through the above technical solution, after the bottom plate 1 and the top plate 7 are installed, the first baffle 3 and the second baffle 5 are fitted to the pit wall of the foundation pit. At this time, several plug rods 33 are inserted into the inclined surface of the pit wall. Through the insertion of several plug rods 33, the folding guard plate 4 is more firmly fitted to the pit wall of the foundation pit, and the stability of the folding guard plate 4 in supporting the pit wall of the foundation pit is improved. When rainwater above the top plate 7 penetrates downward along the top of the foundation pit, it passes through the plug rod 33 and is absorbed by the annular sponge pad 36 and the cylindrical sponge pad 35 to avoid being close to the foundation pit. The soil near the pit wall has a high water content, which causes the soil near the pit wall to lose its grip, and then causes the entire pit wall to collapse. The extrusion plate 41 is controlled by the electric telescopic rod 40 to move back and forth. When the extrusion plate 41 moves toward the cylindrical sponge pad 35, the cylindrical sponge pad 35 is squeezed, so that the rainwater absorbed by the cylindrical sponge pad 35 is discharged along the water outlet trough 47. The rainwater discharged from the water outlet trough 47 enters the first cavity 48, and then is discharged into the water storage chamber 23 along the connecting pipe 49, the second cavity 53, and the liquid outlet trough 54.

[0046] Specifically, the inner wall of the insertion rod 33 is slidably connected to the top ring 38, and a sliding groove 39 is provided inside the insertion rod 33 for use with the top ring 38. One side of the annular sponge pad 36 is set as an annular inclined surface. The inner wall of the top ring 38 is fixedly connected to the connecting plate 43, and the connecting plate 43 is slidably connected to the insertion rod 33. A connecting shaft 42 is fixedly connected between the connecting plate 43 and the extrusion plate 41.

[0047] Through the above technical solution, the extrusion plate 41 moves laterally while driving the connecting shaft 42 to move, causing the top ring 38 to move. The top ring 38 squeezes the inclined surface of the annular sponge pad 36, so that the rainwater absorbed by the annular sponge pad 36 enters the cylindrical sponge pad 35. When the extrusion plate 41 contacts the cylindrical sponge pad 35, the top ring 38 blocks the water inlet groove 34. As the extrusion plate 41 continues to move, the rainwater in the cylindrical sponge pad 35 and the annular sponge pad 36 can be squeezed out along the water outlet groove 47, thereby preventing the squeezed rainwater from entering the soil again.

[0048] Specifically, a slide plate 44 is fixedly connected to the side of the cylindrical sponge pad 35 away from the water outlet trough 47, and two third sliding shafts 45 are symmetrically fixedly connected to the outer wall of the slide plate 44. The third sliding shafts 45 are arranged on the inner wall of the cylindrical sponge pad 35 and are slidably connected to it. One end of the third sliding shaft 45 is fixedly connected to a third spring 46, and the third spring 46 is fixedly connected to the insertion rod 33.

[0049] Through the above technical solution, when the extrusion plate 41 approaches the cylindrical sponge pad 35, it first contacts the slide plate 44, and then squeezes the cylindrical sponge pad 35 by squeezing the slide plate 44. When the slide plate 44 moves, it drives the third sliding shaft 45 to move, compressing the third spring 46. When the extrusion plate 41 moves away from the cylindrical sponge pad 35, the slide plate 44 moves back under the action of the third spring 46. Under the pull of the slide plate 44, the cylindrical sponge pad 35 and the annular sponge pad 36 can be quickly restored.

[0050] Specifically, a water storage tank 50 is provided at the top of the top plate 7, a second filter plate 51 is fixedly connected to the inner wall of the water storage tank 50, the bottom of the water storage tank 50 passes through the top plate 7, the bottom of the water storage tank 50 is set as an inclined surface, and a liquid inlet tank 52 is provided at the top of the second baffle 5 and below the water storage tank 50.

[0051] Through the above technical solution, when the ground water level is too high and starts to flow, the rainwater passing through the top plate 7 passes through the second filter plate 51 and enters the water storage tank 50. Under the guidance of the inclined surface at the bottom of the water storage tank 50, the rainwater is discharged into the first cavity 48 along the liquid inlet groove 52. The rainwater entering the first cavity 48 similarly enters the water storage chamber 23. In this way, the rainwater flowing back into the foundation pit from the surrounding ground is processed, and the rainwater is prevented from being discharged onto the wall of the foundation pit, and the rainwater can be concentrated in the water storage chamber 23 and extracted.

[0052] An operating method for a foundation pit protection device for municipal construction is provided. The operating method is applicable to the above-mentioned foundation pit protection device for municipal construction. The operating method steps are as follows:

[0053] S1: Install the bottom plate 1 at the bottom of the foundation pit, install the top plate 7 at the top of the foundation pit, and fold the guard plate 4 to fit the pit wall to protect the pit wall;

[0054] S2: Pull out the waterproof curtain 10 on the winding roller 9 and fix it through the clamping seat 20 to block the inclined surface on the foundation pit wall;

[0055] S3: Insert the insertion rod 33 into the inclined surface of the foundation pit wall, use the cylindrical sponge pad 35 and the annular sponge pad 36 to absorb the rainwater that penetrates into the soil, start the electric telescopic rod 40 to control the extrusion plate 41 to move and squeeze out the cylindrical sponge pad 35 and the annular sponge pad 36.

[0056] When in use, the bottom plate 1 is installed at the bottom of the foundation pit, the top plate 7 is installed at the top of the foundation pit, and the two limiting anchor rods 55 are inserted into the foundation to make the position of the bottom plate 1 and the top plate 7 firm, thereby improving the stability of the support structure, and the folding guard plate 4 is fitted to the pit wall of the foundation pit to protect the pit wall and prevent soil collapse. The folding guard plate 4 is adapted to foundation pits of different depths, and the volume can be reduced after the folding guard plate 4 is folded for easy transportation. After the bottom plate 1 and the top plate 7 are installed, the movable frame 31 is moved to move the two blocks 30 and tighten the two second springs 29. After the block 30 moves, it separates from the gear 26. After losing the limit of the block 30, the waterproof curtain 10 on the winding roller 9 is pulled to release the waterproof curtain 10. The cloth 10 blocks the inclined surface on the wall of the foundation pit to prevent rainwater from eroding the wall of the foundation pit and causing soil landslide. After the waterproof curtain 10 is released, the waterproof curtain 10 is passed between the pulley 18 and the support plate 13. The pulley 18 is pressed downward by the first spring 16, and the waterproof curtain 10 is pressed into an arc shape in conjunction with the support plate 13 which is set to be arc-shaped. The support of the waterproof curtain 10 by the support plate 13 makes the structure of the arc-shaped waterproof curtain 10 stable, preventing the collected rainwater from collapsing to both sides. After the waterproof curtain 10 is pulled out, its ends are placed in the three clamping seats 20, and the three threaded rods 22 are rotated to move the three threaded rods 22 downward, pushing the three clamping plates 21 downward, and the three clamping plates 21 support the waterproof curtain 10. The ends are fixed, and by misaligning the clamping seat 20 in the middle and pulling the other two clamping seats 20, the released waterproof curtain 10 is formed into an arc. After the ends of the waterproof curtain 10 are fixed, the movable frame 31 is loosened, and the two clamping blocks 30 are reset under the action of the two second springs 29. After the clamping blocks 30 are reset, they are pressed against the gear 26. When rainwater flows on the waterproof curtain 10, the clamping blocks 30 are pressed against the straight surface on the teeth of the gear 26, so that the position of the released waterproof curtain 10 is fixed to prevent the waterproof curtain 10 from collapsing, and the rainwater falling on the waterproof curtain 10 flows to the depression in the middle, thereby allowing the falling rainwater to be concentrated on the waterproof curtain 10. When the rainwater flows to the end of the waterproof curtain 10, it enters the storage tank along the first water inlet 24. The rainwater is collected in the water cavity 23 to prevent the rainwater flowing along the slope of the foundation pit wall from being directly discharged into the foundation pit, and from excessively penetrating the soil on one side of the bottom plate 1, which affects the firmness of the installation of the bottom plate 1. The rainwater stored in the water storage cavity 23 can be pumped out by a water pump or other water pumping tools. After the bottom plate 1 and the top plate 7 are installed, the first baffle 3 and the second baffle 5 are fitted to the pit wall of the foundation pit. At this time, several insertion rods 33 are inserted into the slope of the pit wall. Through the insertion of several insertion rods 33, the folding guard plate 4 is more firmly fitted to the pit wall of the foundation pit, and the stability of the folding guard plate 4 supporting the pit wall is improved. When the rainwater above the top plate 7 penetrates downward along the top of the foundation pit, it passes through the insertion rods 33 and is absorbed by the annular sponge pad 36 and the cylindrical sponge pad 35 to absorb the rainwater that penetrates into the soil.To prevent the soil near the foundation pit wall from having a high water content, which causes the soil near the foundation pit wall to lose its grip and thus cause the entire foundation pit wall to collapse, the extrusion plate 41 is controlled to move back and forth by the electric telescopic rod 40. When the extrusion plate 41 moves toward the cylindrical sponge pad 35, it drives the connecting shaft 42 to move, causing the top ring 38 to move. The top ring 38 squeezes the inclined surface of the annular sponge pad 36, so that the rainwater absorbed by the annular sponge pad 36 enters the cylindrical sponge pad 35. When the extrusion plate 41 contacts the cylindrical sponge pad 35, the top ring 38 presses the water inlet trough 38. 4 is blocked. As the squeezing plate 41 continues to move, the rainwater in the cylindrical sponge pad 35 and the annular sponge pad 36 can be squeezed out along the water outlet 47 to prevent the squeezed rainwater from entering the soil again. The rainwater discharged from the water outlet 47 enters the first cavity 48 and then flows along the connecting pipe 49, the second cavity 53, and the liquid outlet 54 into the water storage chamber 23. When the squeezing plate 41 approaches the cylindrical sponge pad 35, it first contacts the slide plate 44, and squeezes the cylindrical sponge pad 35 by squeezing the slide plate 44. The slide plate 44 moves while driving the third slide shaft 45 moves, compressing the third spring 46. When the extrusion plate 41 moves away from the cylindrical sponge pad 35, the third spring 46 moves the slide plate 44 back. Under the pull of the slide plate 44, the cylindrical sponge pad 35 and the annular sponge pad 36 are quickly restored. When the ground water level is too high and begins to flow, the rainwater passing through the top plate 7 passes through the second filter plate 51 and enters the water storage tank 50. Under the guidance of the inclined surface at the bottom of the water storage tank 50, the rainwater is discharged into the first cavity 48 along the liquid inlet groove 52. The rainwater entering the first cavity 48 enters the water storage chamber 23 in the same way. This prevents rainwater from flowing back into the foundation pit from the surrounding ground, preventing it from being discharged onto the foundation pit walls. Instead, the rainwater can be collected in the water storage chamber 23 and pumped out. After the foundation pit support is released, the crank handle 32 is turned to drive the rotating shaft 8 to rotate, causing the reel 9 to rotate, allowing the waterproof curtain 10 to be rewound and reused. When the waterproof curtain 10 is rewound, the inclined surface on the teeth of the gear 26 presses against the clamping block 30. Under the pushing action of the inclined surface of the teeth, the clamping block 30 can be pushed to move, thereby not affecting the rewinding of the waterproof curtain 10.

[0057] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0059] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation pit protection device for municipal construction, characterized in that: The invention comprises a bottom plate (1), wherein a water storage chamber (23) is provided inside the bottom plate (1), a first water inlet (24) is provided on the top of the bottom plate (1), a second water inlet (25) is provided on the top of the bottom plate (1) and on a side away from the first water inlet (24), the first water inlet (24) and the second water inlet (25) are both communicated with the water storage chamber (23), the top of the bottom plate (1) is fixedly connected to a first mounting frame (2), the inner wall of the first mounting frame (2) is rotatably connected to a first baffle (3), the top of the first baffle (3) is provided with a folding guard plate (4), the top of the folding guard plate (4) is provided with a second baffle (5), the outer wall of the second baffle (5) is rotatably connected to a second mounting frame (6), the top of the second mounting frame (6) is fixedly connected to a top plate (7), and the bottoms of the bottom plate (1) and the top plate (7) are both fixedly connected to a limiting anchor rod (55); The top plate (7) is rotatably connected to a rotating shaft (8), the outer wall of the rotating shaft (8) is fixedly connected to a winding roller (9), the outer wall of the winding roller (9) is wound with a waterproof curtain (10), one end of the waterproof curtain (10) passes through the top plate (7), and a fixing component is provided on the top of the bottom plate (1); The fixing assembly includes a support frame (19), which is fixedly mounted on the top of the bottom plate (1) and close to the side of the first water inlet (24). Three clamping seats (20) are fixedly connected to the top of the support frame (19) at equal intervals. The clamping seat (20) located in the middle is located close to the folding guard plate (4). The inner wall of the clamping seat (20) is slidably connected to a clamping plate (21). The top of the clamping seat (20) is threadedly connected to a threaded rod (22). The bottom of the threaded rod (22) is rotatably connected to the clamping plate (21). One end of the rotating shaft (8) passes through the top plate (7) and is fixedly connected to a crank (32). The outer wall of the rotating shaft (8) is symmetrically fixedly connected to two gears. (26), one side of the teeth on the gear (26) is set as an inclined surface, and the other side thereof is set as a straight surface, the outer wall of the top plate (7) is symmetrically fixedly connected to two positioning plates (27), the inner wall of the positioning plate (27) is slidably connected to a second sliding shaft (28), one end of the second sliding shaft (28) is fixedly connected to a clamping block (30), the clamping block (30) is slidably connected to the top plate (7), the outer wall of the second sliding shaft (28) is provided with a second spring (29), one end of the second spring (29) is fixedly connected to the clamping block (30), the other end of the second spring (29) is fixedly connected to the positioning plate (27), and the tops of the two clamping blocks (30) are fixedly connected to a movable frame (31).

2. A foundation pit protection device for municipal construction according to claim 1, characterized in that: Two mounting plates (11) are symmetrically fixedly connected to one side of the top plate (7), a fixing plate (12) is fixedly connected between the two mounting plates (11), the inner wall of the fixing plate (12) is slidably connected to a first sliding shaft (14), the top of the first sliding shaft (14) is fixedly connected to a limiting block (15), the bottom of the first sliding shaft (14) is fixedly connected to a fixing frame (17), the inner wall of the fixing frame (17) is rotatably connected to a pulley (18), the outer wall of the first sliding shaft (14) is sleeved with a first spring (16), the top of the first spring (16) is fixedly connected to the fixing plate (12), and the bottom of the first spring (16) is fixedly connected to the fixing frame (17), a support plate (13) is fixedly connected between the two mounting plates (11) and below the pulley (18), the support plate (13) is arranged in an arc shape, and the waterproof curtain (10) passes between the pulley (18) and the support plate (13).

3. A foundation pit protection device for municipal construction according to claim 2, characterized in that: A second cavity (53) is provided inside the first baffle (3), a liquid outlet groove (54) is provided at the bottom of the first baffle (3), and the liquid outlet groove (54) is located above the second water inlet (25). A first cavity (48) is provided inside the second baffle (5), a connecting pipe (49) is provided between the first cavity (48) and the second cavity (53), and a water absorption component is provided on one side of the second baffle (5).

4. A foundation pit protection device for municipal construction according to claim 3, characterized in that: The water absorption assembly comprises a plurality of insertion rods (33), wherein the plurality of insertion rods (33) are fixedly mounted at equal intervals on the outer wall of the second baffle (5), a water inlet groove (34) is provided at the top and bottom of each insertion rod (33), the inner wall of each water inlet groove (34) is fixedly connected to a first filter plate (37), a cylindrical sponge pad (35) is provided on the inner wall of each insertion rod (33), an annular sponge pad (36) is fixedly connected to the outer wall of each cylindrical sponge pad (35), and the annular sponge pad (36) is attached to the first filter plate (37), an electric telescopic rod (40) is fixedly connected to the inner wall of each insertion rod (33), an output end of each electric telescopic rod (40) is fixedly connected to an extrusion plate (41), a water outlet groove (47) is provided inside each insertion rod (33), and the water outlet groove (47) is communicated with the first cavity (48).

5. A foundation pit protection device for municipal construction according to claim 4, characterized in that: The inner wall of the insertion rod (33) is slidably connected to a top ring (38), the interior of the insertion rod (33) is provided with a slide groove (39) used in conjunction with the top ring (38), one side of the annular sponge pad (36) is set as an annular inclined surface, the inner wall of the top ring (38) is fixedly connected to a connecting plate (43), the connecting plate (43) is slidably connected to the insertion rod (33), and a connecting shaft (42) is fixedly connected between the connecting plate (43) and the extrusion plate (41).

6. A foundation pit protection device for municipal construction according to claim 5, characterized in that: A slide plate (44) is fixedly connected to one side of the cylindrical sponge pad (35) away from the water outlet trough (47), and two third sliding shafts (45) are symmetrically fixedly connected to the outer wall of the slide plate (44). The third sliding shafts (45) are arranged on the inner wall of the cylindrical sponge pad (35) and are slidably connected thereto. One end of the third sliding shaft (45) is fixedly connected to a third spring (46), and the third spring (46) is fixedly connected to the insertion rod (33).

7. A foundation pit protection device for municipal construction according to claim 6, characterized in that: A water storage tank (50) is provided on the top of the top plate (7), a second filter plate (51) is fixedly connected to the inner wall of the water storage tank (50), the bottom of the water storage tank (50) passes through the top plate (7), the bottom of the water storage tank (50) is arranged as an inclined surface, and a liquid inlet tank (52) is provided on the top of the second baffle (5) and below the water storage tank (50).

8. An operating method for a foundation pit protection device for municipal construction, the operating method being applicable to the foundation pit protection device for municipal construction according to claim 7, characterized in that: The steps for this operation are as follows: S1: Install the bottom plate (1) at the bottom of the foundation pit, install the top plate (7) at the top of the foundation pit, and protect the foundation pit wall by folding the guard plate (4) to fit the foundation pit wall; S2: Pull out the waterproof curtain (10) on the winding roller (9), fix it through the clamping seat (20), and block the inclined surface on the foundation pit wall; S3: Insert the rod (33) into the slope of the foundation pit wall, use the cylindrical sponge pad (35) and the annular sponge pad (36) to absorb rainwater that has penetrated into the soil, and start the electric telescopic rod (40) to control the extrusion plate (41) to move and squeeze out the cylindrical sponge pad (35) and the annular sponge pad (36).

Images