Negative pressure type foundation pit drainage device for construction without affecting passage

Abstract

The construction negative pressure type foundation pit drainage device comprises a supporting frame, a pressing plate is arranged in the supporting frame, sealing grooves are formed in the outer walls of the four sides of the pressing plate, sealing rings are clamped in the sealing grooves, the outer walls of the sealing rings make contact with the inner wall of the supporting frame, and the outer walls of the sealing rings make contact with the inner wall of the supporting frame. The supporting frame is arranged at the top of a foundation pit body, a first spring is fixedly connected to the outer wall of the bottom of the pressing plate, the end, away from the pressing plate, of the first spring is fixedly connected to the inner wall of the bottom of the supporting frame, and a negative pressure cavity is defined by the bottom of the pressing plate and the interior of the supporting frame. According to the device, as follow-up vehicles continuously pass through the pressing plate, the device can circularly suck and discharge accumulated water at the bottom of the foundation pit body, vehicle passing is not affected in the drainage process, the device can be repeatedly used, energy is not needed, economic benefits are high, and the use requirements of people are met.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit drainage, and in particular to a negative pressure foundation pit drainage device for construction which does not affect traffic. Background Art

[0002] During the construction of underground structures, the excavated foundation pits often need to be retained for a relatively long time. In the rainy season and in some places with high soil moisture content, water accumulation often occurs, affecting construction.

[0003] In order to facilitate the transportation of materials and personnel during the construction of structures, lane changes are often set on one side of the structure. During the construction period, the passage of vehicles changing lanes often has a great impact on the drainage of the foundation pit. It is difficult to completely drain the accumulated water in the foundation pit. It is necessary to arrange special personnel to use drainage pipes to extract and discharge it, and it is also necessary to prevent vehicles from pressing on the drainage pipes and causing damage. This drainage method is not only time-consuming and labor-intensive, but also inefficient. At the same time, the mechanical facilities used for conventional drainage consume a lot of energy and cannot meet people's needs to reduce carbon emissions during construction. Therefore, there is an urgent need for a construction-use negative pressure foundation pit drainage device that does not affect traffic to solve the above problems. Summary of the invention

[0004] In view of the problems in the related technology, the present invention proposes a negative pressure foundation pit drainage device for construction that does not affect traffic, so as to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A negative pressure foundation pit drainage device for construction that does not affect traffic, comprising a support frame, a pressing plate is arranged inside the support frame, four outer walls of the pressing plate are provided with sealing grooves, a sealing ring is clamped inside the sealing groove, the outer wall of the sealing ring is in contact with the inner wall of the support frame, and the support frame is arranged at the top of the foundation pit body;

[0007] The bottom outer wall of the pressing plate is fixedly connected with a first spring, one end of the first spring away from the pressing plate is fixedly connected to the bottom inner wall of the supporting frame, and the bottom of the pressing plate and the interior of the supporting frame form a negative pressure cavity;

[0008] The bottom of the support frame is connected with suction pipes distributed at equal distances, one end of the suction pipe away from the support frame extends to the interior of the foundation pit body, a second one-way valve is provided on the circumferential outer wall of the suction pipe, and an outer wall of one side of the support frame is connected with drainage pipes distributed at equal distances, and a first one-way valve is provided on the circumferential outer wall of the drainage pipe.

[0009] Furthermore, the outer walls on both sides of the support frame are fixedly connected with matching blocks, the cross-section of the matching blocks is convex, and ramps are provided on both sides of the support frame. A splicing groove is provided on the outer wall of one side of the ramp, and the matching blocks are snap-connected with the splicing groove. There are two groups of ramps, and the two groups of ramps are respectively arranged on both sides of the support frame, and the bottom of the ramp is fixedly connected with an anti-slip pad.

[0010] Furthermore, a reinforcing plate is fixedly connected to the top outer wall of the pressing plate, and the cross section of the reinforcing plate is arched.

[0011] Furthermore, an inclined plate is provided at the bottom of the foundation pit body, and the vertical height of the inclined plate close to one end of the suction pipe is lower than the vertical height of the inclined plate away from one end of the suction pipe.

[0012] Furthermore, a sedimentation trough is provided on the top outer wall of the inclined plate, the specification of the sedimentation trough gradually decreases in the direction approaching the suction pipe, and the sedimentation trough includes a first oblique side and a second oblique side, and the inclination angle of the second oblique side is greater than the inclination angle of the first oblique side.

[0013] Furthermore, both inner walls of the support frame are provided with sliding grooves, a slider is slidably connected inside the sliding groove, one side of the slider is fixedly connected to an outer wall of one side of the support frame, and a second spring is fixedly connected to the bottom inner wall of the sliding groove, and the second spring is located directly below the slider.

[0014] Furthermore, a mounting groove is provided at the bottom of the support frame, a movable plate is arranged inside the mounting groove, a first protrusion and a second protrusion are respectively arranged at both ends of the movable plate, the second protrusion is rotatably connected to the mounting groove, the top of the second protrusion and the mounting groove are located in the same horizontal plane, the top of the first protrusion is higher than the top of the mounting groove, a first through groove and a third through groove are respectively provided on the top of the movable plate, one end of the suction tube passes through the inside of the first through groove, and the first spring passes through the inside of the third through groove.

[0015] Furthermore, the top outer wall of the movable plate is fixedly connected with a rotating seat, and the inner walls on both sides of the support frame are rotatably connected with a rotating rod, one end of the rotating rod is fixedly connected with a rotating part, and the circumferential outer wall of the rotating part is fixedly connected with a rotating plate, one end of the rotating plate is provided with a fixing column, one side of the rotating plate is provided with a second through groove, and the circumferential outer wall of the fixing column located in the second through groove is sleeved with a fixing plate, the bottom end of the fixing plate is rotatably connected to the rotating seat, and the end of the rotating plate away from the fixing column is fixedly connected with a cross column, the top of the cross column is provided with a pressing groove, and the bottom outer wall of the pressing plate is fixedly connected with a punching plate, and the punching plate cooperates with the pressing groove.

[0016] Furthermore, the circumferential outer wall of the suction pipe is provided with water absorption holes which are equidistantly distributed in a circular shape, and the specifications of the water absorption holes gradually increase from top to bottom.

[0017] Furthermore, a circular plate is fixedly connected to the circumferential outer wall of the suction pipe, and fixing bolts equidistantly distributed in a circle are arranged on the top of the circular plate. The circular plate is fixedly connected to a filter screen cover via the fixing bolts, and the cross section of the filter screen cover is nipple-shaped.

[0018] Beneficial effects of the present invention:

[0019] The negative pressure foundation pit drainage device provided by the present invention is a construction device that does not affect traffic. It is provided with a pressing plate, a support frame, a first spring, a first non-return valve, a second non-return valve, a suction pipe and a drainage pipe. When the staff connects and fixes the support frame with the inclined platform through the matching block, it is placed on the top of the foundation pit body. Then, when the vehicle passes through the inclined platform and drives onto the pressing plate, the pressing plate will be pressed into the inside of the supporting frame by the downward pressure. At the same time, the first spring is in a compressed state. When the vehicle leaves the pressing plate, the first spring in a compressed state will quickly reset and bounce it up. In the process of the pressing plate being bounced up, negative pressure suction will be generated in the negative pressure chamber. When the second one-way valve on one side of the suction pipe is opened, the first one-way valve on the side of the drainage pipe is closed, and the accumulated water at the bottom of the foundation pit can be pumped into the negative pressure chamber through the suction pipe for storage. Later, when the second car drives to the top of the pressing plate, the accumulated water in the negative pressure chamber can be squeezed out from the drainage pipe during the downward pressure of the pressing plate, thus completing a process of extracting and discharging the accumulated water in the foundation pit. As subsequent vehicles continue to pass the pressing plate, the device can cyclically suck and discharge the accumulated water at the bottom of the foundation pit. The device will not affect the passage of vehicles during the drainage process, is reusable, does not require energy, has high economic benefits, and meets people's needs.

[0020] The present invention provides a negative pressure foundation pit drainage device for construction that does not affect traffic. Through the provided reinforcement plate, inclined plate and sedimentation trough, when a vehicle drives towards the pressing plate, since the top of the pressing plate is provided with a reinforcement plate and the cross-section of the reinforcement plate is arched, the pressure on the pressing plate can be continuously increased in the process of the vehicle driving towards the middle of the reinforcement plate, thereby increasing the negative pressure suction force inside the support frame, making the suction force of the suction pipe larger and the suction effect better. At the same time, since the vertical height of the inclined plate arranged at the bottom of the foundation pit body close to one end of the suction pipe is lower than the vertical height away from one end of the suction pipe, the accumulated water in the foundation pit body can be gathered toward the suction pipe attachment, and the sedimentation trough opened on one side of the inclined plate can perform initial sedimentation on the accumulated water flowing down from its surface, avoiding a large amount of impurities and the like from flowing into the suction pipe, which will cause the suction pipe to be blocked in the long run, and the inclination angle of the second inclined side of the sedimentation trough is greater than the inclination angle of the first inclined side, so that the water flow will not easily overflow from the second inclined side, so that the sedimentation effect of the sedimentation trough is better.

[0021] The present invention provides a negative pressure foundation pit drainage device for construction that does not affect traffic. Through the arranged movable plate, pressing groove and rotating rod, when the support frame is subjected to the downward pressure of the vehicle, the punching plate will be driven to descend together. When the punching plate descends to a certain distance, it will contact the pressing groove and apply downward pressure to it. When the pressing groove is subjected to pressure, it will drive the other end of the rotating plate to tilt up. When the rotating column at the other end of the rotating plate is tilted up, it can drive the fixed plate to rise together. In the process of the fixed plate rising, the end of the movable plate away from the drainage pipe can be driven to tilt up, thereby accelerating the discharge of water accumulated in the negative pressure chamber. When the vehicle passes through the pressing plate, the pressing plate will drive the punching plate to reset. At this time, the movable plate will be driven to reset by the gravity, so as to facilitate the subsequent lifting of the movable plate for drainage.

[0022] The present invention provides a negative pressure foundation pit drainage device for construction that does not affect traffic. Through the provided water suction holes and filter screen cover, in the process of the suction pipe sucking the water accumulated at the bottom of the foundation pit body, the filter screen cover arranged on its outer wall can avoid impurities and the like from being sucked into the suction pipe to cause blockage. At the same time, the filter screen cover is in the shape of a nipple, which can expand the filtering area of ​​the filter screen cover, and impurities accidentally adhered to its surface can easily slide off its curved surface, thereby ensuring the permeability of the filter screen cover. The specifications of the water suction holes gradually increase from top to bottom, thereby avoiding the situation where the water suction holes located at the lower part of the suction pipe have insufficient suction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a half-section structural schematic diagram of the present invention.

[0026] Figure 3 It is a schematic diagram of the cross-sectional plan structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the structure after the reinforcement plate of the present invention is installed.

[0028] Figure 5 It is a schematic diagram of the half-section structure of the inclined plate of the present invention.

[0029] Figure 6 It is a schematic diagram of a half-section structure of the movable plate of the present invention.

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Figure 8 It is a schematic diagram of the internal structure of the support frame of the present invention.

[0032] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point B in the middle.

[0033] Fig.10 For the present invention Figure 8 Schematic diagram of the enlarged structure at point C in the middle.

[0034] Fig.11 It is a schematic diagram of the installation structure of the filter screen cover of the present invention.

[0035] Fig.12 It is a schematic diagram of the disassembled structure of the filter screen cover of the present invention.

[0036] In the figure:

[0037] 1. Support frame; 2. Press plate; 3. Inclined platform; 4. Anti-skid mat; 5. Drain pipe; 6. First one-way valve; 7. Foundation pit body; 8. Joint groove; 9. Matching block; 10. Sealing groove; 11. Sealing ring; 12. First spring; 13. Suction pipe; 14. Second one-way valve; 15. Reinforcement plate; 16. Inclined plate; 17. Sedimentation tank; 1701. First bevel; 1702. Second bevel; 18. Punch plate; 19. Horizontal column; 20. Press plate Pressing groove; 21, rotating plate; 22, rotating part; 23, rotating rod; 24, first protruding part; 25, mounting groove; 26, movable plate; 27, first through groove; 28, second through groove; 29, fixing column; 30, fixing plate; 31, rotating seat; 32, second protruding part; 33, third through groove; 34, sliding block; 35, sliding groove; 36, second spring; 37, circular plate; 38, fixing bolt; 39, filter screen; 40, water absorption hole. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying 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 belong to the scope of protection of the present invention.

[0039] Example 1

[0040] See also Figure 1-Figure 3A negative pressure foundation pit drainage device for construction that does not affect traffic, including a support frame 1, a pressing plate 2 is arranged inside the support frame 1, and sealing grooves 10 are opened on the outer walls of the four sides of the pressing plate 2. A sealing ring 11 is clamped inside the sealing groove 10, and the outer wall of the sealing ring 11 contacts the inner wall of the support frame 1. The support frame 1 is arranged on the top of the foundation pit body 7;

[0041] The bottom outer wall of the pressing plate 2 is fixedly connected with a first spring 12, and one end of the first spring 12 away from the pressing plate 2 is fixedly connected to the bottom inner wall of the supporting frame 1, and the bottom of the pressing plate 2 and the interior of the supporting frame 1 form a negative pressure cavity;

[0042] The bottom of the support frame 1 is connected with suction pipes 13 which are distributed at equal distances. One end of the suction pipe 13 away from the support frame 1 extends to the interior of the foundation pit body 7. A second one-way valve 14 is provided on the circumferential outer wall of the suction pipe 13. The outer wall of one side of the support frame 1 is connected with drainage pipes 5 which are distributed at equal distances. A first one-way valve 6 is provided on the circumferential outer wall of the drainage pipe 5.

[0043] Preferably, both side outer walls of the support frame 1 are fixedly connected with matching blocks 9, the cross-section of the matching blocks 9 is convex, ramps 3 are arranged on both sides of the support frame 1, and one side outer wall of the ramp 3 is provided with a splicing groove 8, the matching blocks 9 are snapped into the splicing groove 8, the number of the ramps 3 is two groups, the two groups of ramps 3 are respectively arranged on both sides of the support frame 1, and the bottom of the ramp 3 is fixedly connected with an anti-slip pad 4. When the staff completes the splicing and fixing of the support frame 1 and the ramp 3 through the matching blocks 9, it is placed on the top of the foundation pit body 7. Then, when the vehicle passes through the ramp 3 and drives onto the pressing plate 2, the pressing plate 2 will be pressed into the inside of the support frame 1 by downward pressure. At the same time, the first spring 12 is in a compressed state. When the vehicle leaves the pressing plate 2, the first spring 12 in a compressed state will quickly reset and bounce it up. When the pressing plate 2 is bounced up, negative pressure suction will be generated inside the negative pressure chamber. At this time, the second one-way valve 14 on the side of the suction pipe 13 is opened, and the first one-way valve 6 on the side of the drain pipe 5 is closed. The accumulated water at the bottom of the foundation pit body 7 can be pumped into the negative pressure chamber through the suction pipe 13 for storage. Then, when the second car drives to the top of the pressing plate 2, the accumulated water inside the negative pressure chamber can be squeezed out from the drain pipe 5 during the downward pressure of the pressing plate 2, completing the process of extracting and discharging the accumulated water inside the foundation pit body 7. As subsequent vehicles continue to pass by the pressing plate 2, the device can circulate to suck and discharge the accumulated water at the bottom of the foundation pit body 7. In addition, the device will not affect the passage of vehicles during the drainage process, is reusable, does not require energy, has high economic benefits, and meets people's use needs.

[0044] Implementation 2

[0045] See also Figure 4-Figure 5, a negative pressure foundation pit drainage device for construction that does not affect traffic. Compared with implementation 1, this implementation also includes a reinforcing plate 15 fixedly connected to the top outer wall of the pressing plate 2, and the cross-section of the reinforcing plate 15 is arched. The cross-section of the reinforcing plate 15 is arched, so the pressure on the pressing plate 2 can be continuously increased when the vehicle drives toward the middle of the reinforcing plate 15, thereby increasing the negative pressure suction force inside the support frame 1, making the suction force of the suction pipe 13 greater and the suction effect better.

[0046] Implementation 3

[0047] See also Figure 4-Figure 5 , a negative pressure foundation pit drainage device for construction that does not affect traffic. Compared with implementation 1-2, this implementation also includes a sloping plate 16 at the bottom of the foundation pit body 7, and the vertical height of the sloping plate 16 close to the suction pipe 13 is lower than the vertical height of the end away from the suction pipe 13. A sedimentation trough 17 is opened on the top outer wall of the sloping plate 16. The specification of the sedimentation trough 17 gradually decreases in the direction close to the suction pipe 13. The sedimentation trough 17 includes a first sloping side 1701 and a second sloping side 1702. The inclination angle of the second sloping side 1702 is greater than the inclination angle of the first sloping side 1701. Since the bottom of the foundation pit body 7 is provided with a sloping plate 16, the vertical height of the sloping plate 16 close to the suction pipe 13 is lower than the vertical height of the end away from the suction pipe 13. The top outer wall of the sloping plate 16 is provided with a sedimentation trough 17. The specification of the sedimentation trough 17 gradually decreases in the direction close to the suction pipe 13. The sedimentation trough 17 includes a first sloping side 1701 and a second sloping side 1702. The inclination angle of the second sloping side 1702 is greater than the inclination angle of the first sloping side 1701. The vertical height of the inclined plate 16 close to the suction pipe 13 is lower than the vertical height of the end away from the suction pipe 13, so that the accumulated water in the foundation pit body 7 can gather near the suction pipe 13, and the sedimentation trough 17 opened on one side of the inclined plate 16 can carry out initial sedimentation of the accumulated water flowing down from its surface, so as to prevent a large amount of impurities from flowing into the suction pipe 13, which will cause the suction pipe 13 to be blocked in the long run, and the inclination angle of the second inclined side 1702 of the sedimentation trough 17 is greater than the inclination angle of the first inclined side 1701, so that the water flow will not easily overflow from the second inclined side 1702, so that the sedimentation effect of the sedimentation trough 17 is better.

[0048] Implementation 4

[0049] See also Figure 8 , Fig.10 , a negative pressure foundation pit drainage device for construction that does not affect traffic. Compared with implementations 1-3, this implementation also includes slide grooves 35 on both sides of the inner wall of the support frame 1, and the inner sliding connection of the slide groove 35 is connected with a slider 34. One side of the slider 34 is fixedly connected to the outer wall of one side of the support frame 1. The bottom inner wall of the slide groove 35 is fixedly connected with a second spring 36. The second spring 36 is located directly below the slider 34, which can play a good auxiliary reset role for the first spring 12, thereby avoiding the situation where the first spring 12 is damaged and cannot be reset normally when the device works for a long time.

[0050] Implementation 5

[0051] See also Figure 6-Figure 9, a negative pressure foundation pit drainage device for construction that does not affect traffic, compared with embodiments 1-4, this embodiment also includes a mounting groove 25 at the bottom of the support frame 1, a movable plate 26 is arranged inside the mounting groove 25, and the two ends of the movable plate 26 are respectively provided with a first protrusion 24 and a second protrusion 32, the second protrusion 32 is rotatably connected to the mounting groove 25, the top of the second protrusion 32 and the mounting groove 25 are located in the same horizontal plane, the top of the first protrusion 24 is higher than the top of the mounting groove 25, and the top of the movable plate 26 is respectively provided with a first protrusion 24 and a second protrusion 32. A through slot 27 and a third through slot 33, one end of the suction pipe 13 passes through the inside of the first through slot 27, the first spring 12 passes through the inside of the third through slot 33, the top outer wall of the movable plate 26 is fixedly connected with a rotating seat 31, the inner walls on both sides of the support frame 1 are rotatably connected with a rotating rod 23, one end of the rotating rod 23 is fixedly connected with a rotating part 22, the circumferential outer wall of the rotating part 22 is fixedly connected with a rotating plate 21, one end of the rotating plate 21 is provided with a fixing column 29, one side of the rotating plate 21 is provided with a second through slot 28, located in the second through slot The outer circumferential wall of the fixed column 29 in the support frame 28 is sleeved with a fixed plate 30, and the bottom end of the fixed plate 30 is rotatably connected to the rotating seat 31. The end of the rotating plate 21 away from the fixed column 29 is fixedly connected to the horizontal column 19, and the top of the horizontal column 19 is provided with a pressing groove 20. The bottom outer wall of the pressing plate 2 is fixedly connected with a punching plate 18, and the punching plate 18 cooperates with the pressing groove 20. When the support frame 1 is subjected to the downward pressure of the vehicle, the punching plate 18 will be driven to descend together. When the punching plate 18 descends to a certain distance, it will contact with the pressing groove 20 and exert downward pressure on it. When the pressing groove 20 is subjected to pressure, the other end of the rotating plate 21 will be driven to tilt up. When the rotating column at the other end of the rotating plate 21 is tilted up, the fixed plate 30 can be driven to rise together. In the process of the fixed plate 30 rising, the movable plate 26 can be driven to tilt up one end away from the drain pipe 5, thereby accelerating the discharge of water accumulated in the negative pressure chamber. When the vehicle passes through the pressing plate 2, the pressing plate 2 will drive the punching plate 18 to reset. At this time, the movable plate 26 will be driven by gravity to reset the rotating plate 21, which is convenient for the subsequent lifting and drainage of the movable plate 26.

[0052] Implementation 6

[0053] See also Figure 11-Figure 12, a negative pressure foundation pit drainage device for construction that does not affect traffic, compared with implementations 1-5, this implementation also includes a suction pipe 13 with equidistant circularly distributed water absorption holes 40 on the circumferential outer wall, the specifications of the water absorption holes 40 gradually increase from top to bottom, the suction pipe 13 is fixedly connected to the circumferential outer wall with a circular plate 37, the top of the circular plate 37 is provided with equidistant circularly distributed fixing bolts 38, the circular plate 37 is fixedly connected to a filter screen cover 39 by the fixing bolts 38, the cross section of the filter screen cover 39 is nipple-shaped, in the suction pipe In the process of sucking the accumulated water at the bottom of the foundation pit body 7, the filter screen cover 39 arranged on its outer wall can prevent impurities from being sucked into the suction pipe 13 to cause blockage. At the same time, the filter screen cover 39 is in the shape of a nipple, which can expand the filtering area of ​​the filter screen cover 39, and impurities accidentally adhered to its surface can easily slide off its curved surface, thereby ensuring the permeability of the filter screen cover 39. The specifications of the water suction holes 40 gradually increase from top to bottom, thereby avoiding the situation where the water suction holes 40 located at the lower part of the suction pipe 13 have insufficient suction.

[0054] In summary, with the help of the above-mentioned technical scheme of the present invention, when the staff completes the splicing and fixing of the support frame 1 and the ramp 3 through the matching block 9, it is placed on the top of the foundation pit body 7. Then, when the vehicle passes through the ramp 3 and drives onto the pressing plate 2, the pressing plate 2 will be pressed into the support frame 1 by the downward pressure. At the same time, the first spring 12 is in a compressed state. When the vehicle drives away from the pressing plate 2, the first spring 12 in a compressed state will quickly reset and bounce it up. In the process of the pressing plate 2 being bounced up, negative pressure suction will be generated inside the negative pressure chamber. At this time, the second one-way valve 14 on the side of the suction pipe 13 is opened, and the first one-way valve 6 on the side of the drainage pipe 5 is closed. The accumulated water at the bottom of the foundation pit body 7 can be pumped into the negative pressure chamber through the suction pipe 13 for storage on site. , and then when the second car drives to the top of the pressing plate 2, the accumulated water in the negative pressure chamber can be squeezed out from the drain pipe 5 during the pressing process of the pressing plate 2, completing a process of extracting and discharging the accumulated water in the foundation pit body 7. As subsequent vehicles continue to pass the pressing plate 2, the device can circulate and suck and discharge the accumulated water at the bottom of the foundation pit body 7. In addition, the device will not affect the passage of vehicles during the drainage process, is reusable, does not require energy, has high economic benefits, and meets people's use needs. When the vehicle drives onto the pressing plate 2, since a reinforcing plate 15 is provided on the top of the pressing plate 2, and the cross-section of the reinforcing plate 15 is arched, the pressure on the pressing plate 2 can be continuously increased during the process of the vehicle driving toward the middle of the reinforcing plate 15, thereby improving the support The negative pressure suction force inside the support frame 1 makes the suction force of the suction pipe 13 greater and the suction effect better. At the same time, since the vertical height of the inclined plate 16 arranged at the bottom of the foundation pit body 7 close to the end of the suction pipe 13 is lower than the vertical height away from the end of the suction pipe 13, the accumulated water in the foundation pit body 7 can be gathered near the suction pipe 13, and the sedimentation trough 17 opened on one side of the inclined plate 16 can perform initial sedimentation of the accumulated water flowing down from its surface, avoiding a large amount of impurities from flowing into the suction pipe 13, which will cause the suction pipe 13 to be blocked in the long run, and the inclination angle of the second oblique side 1702 of the sedimentation trough 17 is greater than the inclination angle of the first oblique side 1701, so that the water flow will not easily overflow from the second oblique side 1702, so that the sedimentation effect of the sedimentation trough 17 is better, and when the support frame 1 is subjected to the downward pressure of the vehicle, When the pressing plate 20 is pressed, the other end of the rotating plate 21 is lifted up, and when the rotating column at the other end of the rotating plate 21 is lifted up, the fixed plate 30 is lifted up together. In the process of the fixed plate 30 rising up, the movable plate 26 can be lifted up away from the end of the drainage pipe 5, so as to accelerate the discharge of the accumulated water in the negative pressure chamber. When the vehicle passes through the pressing plate 2, the pressing plate 2 will drive the punching plate 18 to reset. At this time, the movable plate 26 will be driven to reset by the gravity, so as to facilitate the subsequent lifting and drainage of the movable plate 26. In the process of the suction pipe 13 sucking the accumulated water at the bottom of the foundation pit body 7,The filter screen cover 39 disposed on its outer wall can prevent impurities from being sucked into the suction pipe 13 to cause blockage. At the same time, the filter screen cover 39 is in the shape of a nipple, which can expand the filtering area of ​​the filter screen cover 39. At the same time, the circumferential outer wall of the filter screen cover 39 is a curved surface structure. When impurities are accidentally adhered to the surface of the filter screen cover 39, the impurities can easily slide off the curved surface of the filter screen cover 38 due to gravity, thereby ensuring the permeability of the filter screen cover 39. At the same time, the specifications of the water absorption hole 40 opened at the bottom of the suction pipe 13 gradually increase from top to bottom, avoiding the situation where the water absorption hole 40 located at the lower part of the suction pipe 13 has insufficient suction.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure foundation pit drainage device for construction that does not affect traffic, comprising a support frame (1), characterized in that: A pressing plate (2) is arranged inside the support frame (1), and sealing grooves (10) are provided on the outer walls of four sides of the pressing plate (2). A sealing ring (11) is clamped inside the sealing groove (10), and the outer wall of the sealing ring (11) is in contact with the inner wall of the support frame (1). The support frame (1) is arranged on the top of the foundation pit body (7); The bottom outer wall of the pressing plate (2) is fixedly connected to a first spring (12); one end of the first spring (12) away from the pressing plate (2) is fixedly connected to the bottom inner wall of the supporting frame (1); the bottom of the pressing plate (2) and the interior of the supporting frame (1) form a negative pressure cavity; The bottom of the support frame (1) is plugged with suction pipes (13) distributed at equal distances, one end of the suction pipe (13) away from the support frame (1) extends to the interior of the foundation pit body (7), a second one-way valve (14) is provided on the circumferential outer wall of the suction pipe (13), and a drainage pipe (5) distributed at equal distances is plugged into the outer wall of one side of the support frame (1), and a first one-way valve (6) is provided on the circumferential outer wall of the drainage pipe (5).

2. A negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1, characterized in that: The outer walls on both sides of the support frame (1) are fixedly connected with matching blocks (9), the cross section of the matching blocks (9) is convex, and inclined platforms (3) are arranged on both sides of the support frame (1), and a splicing groove (8) is opened on the outer wall of one side of the inclined platform (3), and the matching blocks (9) are snap-fitted with the splicing groove (8). The number of the inclined platforms (3) is two groups, and the two groups of the inclined platforms (3) are respectively arranged on both sides of the support frame (1), and the bottom of the inclined platform (3) is fixedly connected with an anti-slip pad (4).

3. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1 is characterized in that: A reinforcing plate (15) is fixedly connected to the top outer wall of the pressing plate (2), and the cross section of the reinforcing plate (15) is arched.

4. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1 is characterized in that: An inclined plate (16) is provided at the bottom of the foundation pit body (7), and the vertical height of the inclined plate (16) at one end close to the suction pipe (13) is lower than the vertical height at one end away from the suction pipe (13).

5. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 4 is characterized in that: The top outer wall of the inclined plate (16) is provided with a sedimentation trough (17), the specifications of which gradually decrease in the direction approaching the suction pipe (13), and the sedimentation trough (17) comprises a first oblique edge (1701) and a second oblique edge (1702), and the inclination angle of the second oblique edge (1702) is greater than the inclination angle of the first oblique edge (1701).

6. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1 is characterized in that: The inner walls on both sides of the support frame (1) are provided with sliding grooves (35), the interior of the sliding grooves (35) is slidably connected to a slider (34), one side of the slider (34) is fixedly connected to an outer wall of one side of the support frame (1), and the bottom inner wall of the sliding groove (35) is fixedly connected to a second spring (36), and the second spring (36) is located directly below the slider (34).

7. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1 is characterized in that: The bottom of the support frame (1) is provided with a mounting groove (25), a movable plate (26) is arranged inside the mounting groove (25), and the two ends of the movable plate (26) are respectively provided with a first protrusion (24) and a second protrusion (32), the second protrusion (32) is rotatably connected to the mounting groove (25), the top of the second protrusion (32) and the mounting groove (25) are located in the same horizontal plane, the top of the first protrusion (24) is higher than the top of the mounting groove (25), and the top of the movable plate (26) is respectively provided with a first through groove (27) and a third through groove (33), one end of the suction pipe (13) passes through the inside of the first through groove (27), and the first spring (12) passes through the inside of the third through groove (33).

8. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 7, characterized in that: The top outer wall of the movable plate (26) is fixedly connected with a rotating seat (31), the inner walls on both sides of the support frame (1) are rotatably connected with rotating rods (23), one end of the rotating rod (23) is fixedly connected with a rotating part (22), the circumferential outer wall of the rotating part (22) is fixedly connected with a rotating plate (21), one end of the rotating plate (21) is provided with a fixing column (29), one side of the rotating plate (21) is provided with a second through groove (28), and the second through groove (28) is located at the bottom of the second through groove (28). A fixing plate (30) is sleeved on the circumferential outer wall of the fixing column (29) in the groove (28); the bottom end of the fixing plate (30) is rotatably connected to the rotating seat (31); the end of the rotating plate (21) away from the fixing column (29) is fixedly connected to a transverse column (19); a pressing groove (20) is provided on the top of the transverse column (19); a punching plate (18) is fixedly connected to the bottom outer wall of the pressing plate (2); and the punching plate (18) cooperates with the pressing groove (20).

9. The negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 1, characterized in that: The circumferential outer wall of the suction pipe (13) is provided with water absorption holes (40) which are equidistantly distributed in a circular pattern, and the size of the water absorption holes (40) gradually increases from top to bottom.

10. A negative pressure foundation pit drainage device for construction that does not affect traffic according to claim 9, characterized in that: A circular plate (37) is fixedly connected to the circumferential outer wall of the suction pipe (13); fixing bolts (38) are arranged at equal distances and in a circular shape on the top of the circular plate (37); the circular plate (37) is fixedly connected to a filter screen cover (39) via the fixing bolts (38); and the cross section of the filter screen cover (39) is in the shape of a nipple.

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