Waterproof structure and construction method of building basement entrance

Abstract

This application relates to a waterproof structure and construction method for the entrance of a building basement, belonging to the field of foundation structure protection. The waterproof structure includes: a U-shaped wall surrounding three sides of the basement entrance; a top wall cooperating with the U-shaped wall to form a passage; a cover plate provided with a hinge shaft hinged to the U-shaped wall, and the cover plate can be turned around the hinge shaft to cover the opening of the passage; a driving block arranged on the side of the cover plate facing away from the basement entrance, a drainage groove is provided on the lower side at the opening of the passage, and the driving block can rotate around the hinge shaft in the drainage groove, and the driving block has a water receiving groove; a transmission cylinder rotatably connected to the U-shaped wall along its circumferential direction, and a receiving groove for receiving the transmission cylinder is provided on the U-shaped wall; a sealing flap arranged on the outer peripheral wall of the transmission cylinder along the axial direction of the transmission cylinder, an embedding groove is provided on the U-shaped wall, and the embedding groove communicates with the receiving groove; a dial plate fixed on the outer peripheral wall of the transmission cylinder; and a locking component. This application has the effect of simplifying the waterproofing of the basement entrance and making it difficult for accumulated water to enter the basement through the basement entrance.

Description

Technical Field

[0001] This application relates to the field of infrastructure protection devices, and particularly to a waterproof structure and construction method for the entrance of a building basement. Background Art

[0002] Due to its low terrain, the building basement is often an area prone to water accumulation. During the flood season or heavy rainstorms, rainwater will flow into the building basement through the basement entrance, flooding vehicles and facilities and causing property losses.

[0003] In related technologies, when the flood season or heavy rainstorms come, some sandbags are usually piled up at the garage door to prevent the accumulated water on the ground from flowing into the building basement through the basement entrance.

[0004] Regarding the above related technologies, the inventor believes that waterproofing with sandbags requires manual filling of sand into the sandbags in the early stage, and the sandbags also need to be processed after the flood season, with cumbersome operations and room for improvement. Summary of the Invention

[0005] In order to simplify the waterproofing of the basement entrance and prevent accumulated water from easily entering the basement through the basement entrance, this application provides a waterproof structure and construction method for the entrance of a building basement.

[0006] In a first aspect, this application provides a waterproof structure for the entrance of a building basement, adopting the following technical solution:

[0007] A waterproof structure for the entrance of a building basement includes:

[0008] A U-shaped wall surrounding three sides of the basement entrance;

[0009] A top wall fixed to the upper side of the U-shaped wall, and the top wall and the U-shaped wall cooperate to form a channel opening towards one side;

[0010] A cover plate, on both opposite side walls of which there are hinge shafts hinged to the U-shaped wall. The hinge shafts are arranged on the side of the cover plate away from the basement entrance, and the cover plate can be flipped around the hinge shafts to cover the opening of the channel;

[0011] A driving block arranged on the side of the cover plate facing away from the basement entrance. There is a drainage groove on the lower side at the opening of the channel. The driving block is arranged in the drainage groove and can rotate around the hinge shaft in the drainage groove. The driving block has a water receiving groove with an opening facing the opening of the drainage groove;

[0012] A transmission cylinder is rotationally connected to the two opposite inner side walls of the U-shaped wall along its circumferential direction. There are receiving grooves for receiving the transmission cylinder on the two opposite inner side walls of the U-shaped wall, and the transmission cylinder is arranged vertically;

[0013] A sealing flap is axially arranged on the outer peripheral wall of the transmission cylinder. The sealing flap rotates with the transmission cylinder. Embedding grooves for the sealing flap to be inserted are provided on two opposite inner side walls of the U-shaped wall, and the embedding grooves communicate with the storage grooves;

[0014] A dial plate is axially fixed on the outer peripheral wall of the transmission cylinder. When the cover plate flips and closes the opening of the channel, the dial plate can be driven to rotate towards the opening of the channel; and

[0015] A locking assembly. When the cover plate flips to a vertical state, the sealing flap slides out of the embedding groove and abuts against one side of the cover plate facing away from the opening of the channel, and the locking assembly locks the sealing flap on the U-shaped wall.

[0016] By adopting the above technical solution, the accumulated water on the ground flows into the water receiving groove to increase the weight of the driving block. When the accumulated water in the water receiving groove reaches a certain amount, the driving block drives the cover plate to flip around the hinge axis to close the opening of the channel. When the cover plate flips to a vertical state, the sealing flap abuts against one side of the cover plate facing away from the opening of the channel, and the locking assembly locks the sealing flap on the U-shaped wall. The cover plate and the sealing flap cooperate to close the opening of the channel, so that a certain gap can be reserved between the cover plate and the U-shaped wall, realizing the automatic closing of the opening of the channel, simplifying the waterproofing of the basement entrance, and making it difficult for the accumulated water to enter the basement through the basement entrance.

[0017] Optionally, rotating shafts are fixed on two opposite walls of the U-shaped wall. The transmission cylinder is sleeved on the rotating shafts and is rotatably connected to the rotating shafts.

[0018] By adopting the above technical solution, the transmission cylinder is rotatably connected to the U-shaped wall.

[0019] Optionally, the locking assembly includes:

[0020] A locking shaft having an unlocking surface parallel to the axis of the locking shaft. An arc-shaped rotating groove is provided on the outer peripheral wall of the rotating shaft for the locking shaft to be inserted. The locking shaft can rotate in the rotating groove, and a locking groove is provided on the inner peripheral wall of the transmission cylinder. When the locking shaft rotates in the rotating groove, it can be inserted into the locking groove; and

[0021] A driving rod is fixed on the locking shaft and is perpendicular to the locking shaft. When the cover plate flips and closes the opening of the channel, the driving rod can be driven to rotate around the locking shaft, and receiving grooves for accommodating the driving rod are provided on both sides of the rotating shaft in the rotating groove;

[0022] Initially, the locking shaft is completely received in the rotating groove, and the transmission cylinder is rotationally connected to the rotating shaft; when the cover plate is flipped to a vertical state, the cover plate drives the locking shaft to rotate and insert into the locking groove, and the transmission cylinder is fixed to the rotating shaft.

[0023] By adopting the above technical solution, when the cover plate is flipped from a horizontal state to a vertical state, the sealing baffle abuts against the side of the cover plate facing the basement entrance, the locking groove is aligned with the rotating groove, and the cover plate drives the locking shaft to rotate in the rotating groove through the driving rod, and the locking shaft is partially inserted into the locking groove to lock the sealing baffle on the rotating shaft, thereby realizing automatic locking of the sealing baffle.

[0024] Optionally, a drainage cover plate is provided at the opening of the drainage groove, and a plurality of water-permeable holes are provided on the drainage cover plate.

[0025] By adopting the above technical solution, the drainage cover plate provides support for objects passing over the drainage trough while ensuring drainage.

[0026] Optionally, a floating plate is provided at the bottom of the drainage trough, and the floating plate is provided directly below the drainage cover plate. The floating plate floats in the vertical direction, and blocking blocks corresponding to the water holes are provided on the floating plate. The blocking blocks can be inserted into the water holes to seal the water holes.

[0027] By adopting the above technical solution, when the amount of water accumulated in the drainage trough is large, the floating plate drives the blocking block to be inserted into the water-permeable hole under the buoyancy of the accumulated water to block the water-permeable hole, thereby realizing automatic blocking of the water-permeable hole.

[0028] Optionally, a vertically arranged guide column is provided in the drainage groove, a guide block is fixed on the floating plate, and the guide block is sleeved on the guide column and slidably connected to the guide column.

[0029] By adopting the above technical solution, the floating plate floats in the vertical direction, so that the blocking block is aligned with the water permeable hole.

[0030] Optionally, a chamfer is provided on an edge of the blocking block away from the floating plate.

[0031] By adopting the above technical solution, the blocking block is guided to be inserted into the water permeable hole to block the water permeable hole.

[0032] Optionally, a water-blocking float is provided in the water receiving groove, and the water-blocking float slides in the water receiving groove along the opening direction of the water receiving groove. The water-blocking float cooperates with the driving block to form a water inlet gap, and the water inlet gap is provided on a side of the water-blocking float close to the cover plate.

[0033] By adopting the above technical solution, during the process of the driving block flipping from the horizontal state to the vertical state, the water-blocking floating plate slides towards the opening of the water receiving groove under the buoyancy of the accumulated water. The water-blocking floating plate and the driving block cooperate to form a space for accommodating the accumulated water, so that the accumulated water is not likely to flow out of the water receiving groove.

[0034] Optionally, sliding shafts are provided on two opposite side walls of the water-blocking floating plate, and sliding grooves parallel to the opening direction of the water receiving groove are provided on the inner side wall of the water receiving groove. The sliding shafts are slidably connected in the sliding grooves.

[0035] By adopting the above technical solution, the water-blocking floating plate floats along the opening direction of the water receiving groove.

[0036] In a second aspect, the present application provides a construction method for a waterproof structure at the entrance of a building basement, adopting the following technical solution:

[0037] A construction method for a waterproof structure at the entrance of a building basement as described above includes the following steps:

[0038] S1. During the construction of the basement, a drainage groove is built on one side of the basement entrance;

[0039] S2. After the construction of the basement is completed, a U-shaped wall and a top wall are built on the ground at the basement entrance, and a storage groove and an embedded groove are reserved in the U-shaped wall;

[0040] S3. The cover plate is installed on the ground under the top wall, and the driving block is installed in the drainage groove and fixed to the cover plate;

[0041] S4. The locking assembly, the transmission cylinder, and the rotating shaft are installed on two opposite walls of the U-shaped wall.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. The accumulated water on the ground flows into the water receiving groove to increase the weight of the driving block. When the accumulated water in the water receiving groove reaches a certain amount, the driving block drives the cover plate to flip around the hinge axis to cover the opening of the passage. When the cover plate flips to the vertical state, the sealing flap abuts against the side of the cover plate facing away from the passage opening, and the locking assembly locks the sealing flap to the U-shaped wall. The cover plate and the sealing flap cooperate to cover the opening of the passage, realizing the automatic covering of the passage opening, simplifying the waterproofing of the basement entrance, and making it difficult for the accumulated water to enter the basement through the basement entrance;

[0044] 2. During the process of the driving block flipping from the horizontal state to the vertical state, the water-blocking floating plate slides towards the opening of the water receiving groove under the buoyancy of the accumulated water. The water-blocking floating plate and the driving block cooperate to form a space for accommodating the accumulated water, so that the accumulated water is not likely to flow out of the water receiving groove. Description of the Drawings

[0045] Figure 1It is a top view of the waterproof structure at the entrance of the building basement in Embodiment 1 of the present application.

[0046] Figure 2 It is Figure 1 a cross-sectional view taken along the A-A direction in

[0047] Figure 3 It is a partial exploded view of the driving block and the water-blocking floating plate in Embodiment 1 of the present application.

[0048] Figure 4 It is a partial exploded view of the locking shaft, the rotating shaft and the transmission cylinder in Embodiment 1 of the present application.

[0049] Figure 5 It is a schematic diagram when the cover plate covers the opening of the channel in Embodiment 1 of the present application.

[0050] Figure 6 It is a structural schematic diagram of the drainage cover plate and the floating plate in Embodiment 1 of the present application.

[0051] Figure 7 It is a partial structural schematic diagram of the locking assembly, the rotating shaft, the dial plate and the sealing flap in Embodiment 2 of the present application.

[0052] Explanation of reference numerals: 10, U-shaped wall; 11, drainage groove; 12, storage groove; 13, embedding groove; 14, rotating shaft; 141, rotating groove; 142, accommodating groove; 143, hinged groove; 144, vertical shaft; 15, drainage cover plate; 151, water-permeable hole; 16, floating plate; 161, blocking block; 162, guiding block; 163, chamfer; 17, guiding column; 18, top wall; 20, basement entrance; 30, channel; 40, cover plate; 41, hinge shaft; 50, driving block; 51, water-receiving groove; 52, water-blocking floating plate; 521, sliding shaft; 522, thin film; 53, sliding groove; 54, water inlet gap; 60, transmission cylinder; 61, locking groove; 70, sealing flap; 80, dial plate; 90, locking assembly; 91, locking shaft; 911, unlocking surface; 92, driving rod; 93, ratchet; 931, internal teeth; 94, ratchet pawl. Detailed implementation manners

[0053] The following further elaborates on the present application in conjunction with the attached Figure 1-7 drawings.

[0054] Embodiment 1 of the present application discloses a waterproof structure for the entrance 20 of a building basement.

[0055] Embodiment 1

[0056] Refer to Figure 1 and Figure 2, the waterproof structure of the basement entrance 20 of the building includes a U-shaped wall 10, a top wall 18, a cover plate 40, a driving block 50, a transmission cylinder 60, a sealing flap 70, a dial plate 80 and a locking assembly 90.

[0057] The U-shaped wall 10 is built on the ground of the basement entrance 20. The U-shaped wall 10 is composed of three walls, and the three walls are connected in sequence to form a U shape. The three walls of the U-shaped wall 10 are respectively arranged on three sides of the basement entrance 20. The top wall 18 is built on the upper side of the U-shaped wall 10. The top wall 18 and the U-shaped wall 10 cooperate to form a passage 30. The opening of the passage 30 faces the opening direction of the U-shaped wall 10, and the passage 30 is interconnected with the basement entrance 20.

[0058] The cover plate 40 is hinged to the U-shaped wall 10 to cover the opening of the passage 30. Specifically, the cover plate 40 abuts against the ground on the lower side of the top wall 18. Hinge shafts 41 are fixed on two opposite side walls of the cover plate 40. The two hinge shafts 41 are concentrically arranged. The hinge shafts 41 are located on the side of the cover plate 40 away from the basement entrance 20. The two hinge shafts 41 are respectively inserted into two opposite side walls of the U-shaped wall 10 and rotatably connected to the U-shaped wall 10 to hinge the cover plate 40 to the U-shaped wall 10. When the cover plate 40 rotates around the hinge shaft 41, the two opposite outer side walls of the cover plate 40 abut and slide against the two opposite inner side walls of the U-shaped wall 10.

[0059] A drainage groove 11 is built on the lower side at the opening of the passage 30. The drainage groove 11 drains water to a nearby river through a drainage pipe. The driving block 50 is arranged in the drainage groove 11 and is located directly below the opening of the drainage groove 11. The driving block 50 is fixedly connected to the side of the cover plate 40 away from the basement entrance 20. The driving block 50 can be turned from a horizontal state to a vertical state or from a vertical state to a horizontal state around the circumferential direction of the hinge shaft 41 in the drainage groove 11. A water receiving groove 51 is formed in the driving block 50. The opening of the water receiving groove 51 faces the opening of the drainage groove 11 to receive the accumulated water flowing down from the opening of the drainage groove 11. When the accumulated water in the water receiving groove 51 reaches a certain amount, the driving block 50 can drive the cover plate 40 to turn upward around the hinge shaft 41 under the action of the gravity of the accumulated water in the water receiving groove 51 to cover the opening of the passage 30.

[0060] Refer to Figure 2 And Figure 3, in order to prevent water from easily flowing out of the water receiving groove 51 when the driving block 50 flips from the horizontal state to the vertical state, a water blocking floating plate 52 is provided in the water receiving groove 51. The water blocking floating plate 52 is made of a low-density material, which can be a plastic plate. The water blocking floating plate 52 slides in the water receiving groove 51 along the opening direction of the water receiving groove 51. Specifically, more than two sliding shafts 521 are fixed on two opposite side walls of the water blocking floating plate 52 perpendicular to the hinge shaft 41. The axis of the sliding shaft 521 is parallel to the axis of the hinge shaft 41. Sliding grooves 53 corresponding to the sliding shafts 521 are formed on the inner side wall of the water receiving groove 51. The sliding grooves 53 are arranged along the opening direction of the water receiving groove 51 and are not communicated with the upper surface of the driving block 50. The sliding shafts 521 are slidably connected in the sliding grooves 53. The water blocking floating plate 52 abuts and slides against three of the inner side walls of the water receiving groove 51, so that the water blocking floating plate 52 and the driving block 50 cooperate to form a water inlet gap 54, and the water inlet gap 54 is located on the side of the water blocking floating plate 52 close to the cover plate 40.

[0061] The water blocking floating plate 52 rises as the water level in the water receiving groove 51 rises. During the process of the driving block 50 flipping from the horizontal state to the vertical state, the water in the water receiving groove 51 can only flow out of the water receiving groove 51 through the water inlet gap 54, so as to prevent the water from completely flowing out of the water receiving groove 51 and reduce the influence of the flowing water on the driving force of the driving block 50.

[0062] A thin film 522 is fixed to the lower side of the water blocking floating plate 52. The thin film 522 is arranged in a U shape, and the opening of the thin film 522 faces the hinge shaft 41. The lower side of the thin film 522 is fixedly connected and sealed with the bottom of the water receiving groove 51, so that during the process of the driving block 50 flipping from the horizontal state to the vertical state, the water in the water receiving groove 51 is not easily discharged from the contact portion between the water blocking floating plate 52 and the inner side wall of the water receiving groove 51.

[0063] Refer to Figure 2 And Figure 4 , the number of the transmission cylinders 60 is two, and the two transmission cylinders 60 are respectively rotatably connected to two opposite walls of the U-shaped wall 10. Specifically, rotating shafts 14 are fixed on two opposite walls of the U-shaped wall 10. The rotating shafts 14 are arranged vertically. The transmission cylinders 60 are sleeved on the rotating shafts 14 and are rotatably connected to the rotating shafts 14. Receiving grooves 12 are formed on two opposite inner side walls of the U-shaped wall 10. The transmission cylinders 60 are arranged in the receiving grooves 12 and can rotate around the rotating shafts 14 in the receiving grooves 12.

[0064] The sealing flap 70 is made of rubber. The sealing flap 70 is fixed on the outer peripheral wall of the transmission cylinder 60. The sealing flap 70 is arranged along the axial direction of the transmission cylinder 60. The lower end of the sealing flap 70 abuts against the ground on the lower side of the top wall 18. Embedding grooves 13 are formed on two opposite inner side walls of the U-shaped wall 10. The embedding grooves 13 communicate with the storage groove 12. The embedding grooves 13 are located between the basement entrance 20 and the storage groove 12. Initially, the sealing flap 70 is stored in the embedding grooves 13.

[0065] The dial plate 80 is fixed on the outer peripheral wall on the upper side of the transmission cylinder 60. The dial plate 80 is arranged along the axial direction of the transmission cylinder 60. Initially, the dial plate 80 extends out of two opposite walls of the U-shaped wall 10. The dial plate 80 is arranged in a direction背离 the opening of the passage 30. At this time, the sealing flap 70 is stored in the embedding grooves 13. During the process of the cover plate 40 flipping from the horizontal state to the vertical state, the cover plate 40 drives the dial plate 80 to rotate towards the opening direction of the passage 30. The dial plate 80 drives the sealing flap 70 to extend out of the embedding grooves 13 through the transmission cylinder 60 until the sealing flap 70 is perpendicular to two opposite walls of the U-shaped wall 10.

[0066] Refer to Figure 4 With Figure 5 As shown in, the locking assembly 90 is arranged on the transmission cylinder 60. When the cover plate 40 flips to the vertical state, the sealing flap 70 slides out of the embedding grooves 13 and abuts against the side of the cover plate 40背离 the opening of the passage 30. The locking assembly 90 locks the sealing flap 70 on the U-shaped wall 10. Specifically, the locking assembly 90 includes a locking shaft 91 and a driving rod 92. A rotating groove 141 is formed on the outer peripheral wall of the rotating shaft 14. The rotating groove 141 is arranged along the axial direction of the rotating shaft 14. The cross-section of the rotating groove 141 in the horizontal plane is in the shape of a superior arc. The radius of the locking shaft 91 is equal to the radius of the rotating groove 141. The locking shaft 91 can be inserted into the rotating groove 141 and rotate within the rotating groove 141. There is an unlocking surface 911 on the outer peripheral wall of the locking shaft 91. The unlocking surface 911 is parallel to the axis of the locking shaft 91. The locking shaft 91 can be completely stored in the rotating groove 141, that is, the unlocking surface 911 faces the outside of the rotating groove 141. The locking shaft 91 can also be partially stored in the rotating groove 141 and partially extend out of the rotating groove 141, that is, the unlocking surface 911 faces the inside of the rotating groove 141. A locking groove 61 is formed on the inner side wall of the transmission cylinder 60. When the locking groove 61 is aligned with the rotating groove 141, the locking shaft 91 can rotate within the rotating groove 141 and partially insert into the locking groove 61 so that the transmission cylinder 60 and the rotating shaft 14 are fixed together.

[0067] The driving rod 92 is fixed on the upper end of the locking shaft 91. The driving rod 92 is perpendicular to the locking shaft 91. When the cover plate 40 flips to cover the opening of the passage 30, it can drive the driving rod 92 to rotate around the locking shaft 91. Accommodating grooves 142 are arranged on both sides of the rotating shaft 14 in the rotating groove 141. The driving rod 92 can be inserted into the accommodating grooves 142.

[0068] Initially, the locking shaft 91 is completely received in the rotating groove 141, and the transmission cylinder 60 is rotationally connected to the rotating shaft 14; when the cover plate 40 is flipped to a vertical state, the cover plate 40 drives the locking shaft 91 to rotate through the driving rod 92, so that the locking shaft 91 is partially inserted into the locking groove 61 and partially received in the rotating groove 141, thereby fixing the transmission cylinder 60 and the rotating shaft 14, and then enabling the sealing baffle 70 to provide support for the cover plate 40, so as to cooperate with the cover plate 40 to cover the opening of the channel 30, so that accumulated water is not easy to enter the basement entrance 20 through the channel 30.

[0069] Reference Figure 5 and Figure 6 A drainage cover plate 15 is also installed at the opening of the drainage groove 11. The drainage cover plate 15 is provided with a plurality of water-permeable holes 151, which penetrate the upper and lower surfaces of the drainage cover plate 15 so that the accumulated water can flow into the drainage groove 11 through the water-permeable holes 151. The water-permeable holes 151 are arranged in a long strip shape, and the length direction of the water-permeable holes 151 is parallel to the width direction of the drainage cover plate 15. The plurality of water-permeable holes 151 are evenly distributed along the length direction of the drainage cover plate 15.

[0070] The bottom of the drain trough 11 is also provided with a floating plate 16, which is made of a low-density material, and can be a plastic plate or a rubber plate. In this embodiment, the floating plate 16 is a rubber plate. The floating plate 16 is located directly below the drain cover plate 15. A block 161 is fixed on the upper side of the floating plate 16. The block 161 corresponds to the water-permeable hole 151 one by one. The block 161 can be inserted into the water-permeable hole 151 to block the water-permeable hole 151. The floating plate 16 floats in the vertical direction so that when the accumulated water in the drain trough 11 reaches a certain amount, the block 161 can block the water-permeable hole 151. Specifically, a vertically arranged guide column 17 is fixed in the drain trough 11. The guide column 17 is located on the side of the drain trough 11 away from the basement entrance 20. The number of the guide columns 17 is more than two, and the more than two guide columns 17 are arranged at intervals along the length direction of the floating plate 16. A guide block 162 corresponding to the guide column 17 is fixed on the floating plate 16 . The guide block 162 is sleeved on the guide column 17 . The guide block 162 is slidably connected to the guide column 17 to guide the floating plate 16 to float and rise and fall in the vertical direction.

[0071] In order to facilitate the insertion of the blocking block 161 into the water permeable hole 151 , the upper edge of the blocking block 161 is provided with a chamfer 163 .

[0072] The implementation principle of Embodiment 1 is as follows: The accumulated water flows into the water receiving groove 51 of the driving block 50 through the water permeable holes 151 to increase the weight of the driving block 50. The driving block 50 drives the cover plate 40 to rotate from the horizontal state to the vertical state around the hinge shaft 41. During the process of the cover plate 40 rotating from the horizontal state to the vertical state around the hinge shaft 41, the deflector 80 is driven to rotate around the circumferential direction of the rotating shaft 14 towards the opening direction of the channel 30. At the same time, the cover plate 40 drives the driving rod 92 to rotate around the circumferential direction of the locking shaft 91 towards the opening direction of the channel 30. When the cover plate 40 is in the vertical state, the cover plate 40 drives the sealing flap 70 to rotate around the rotating shaft 14 through the deflector 80 and abut against one side of the cover plate 40 close to the basement entrance 20. At this time, the locking groove 61 is aligned with the rotating groove 141. At the same time, the cover plate 40 drives the locking shaft 91 to rotate in the rotating groove 141 through the driving rod 92, so that part of the locking shaft 91 is inserted into the locking groove 61 to lock the sealing flap 70 on the rotating shaft 14. The cover plate 40 presses the sealing flap 70 under the push of the accumulated water on the ground. The cover plate 40 and the sealing flap 70 cooperate to cover the opening of the channel 30, so that the accumulated water is not easy to flow into the basement entrance 20 through the channel 30.

[0073] Embodiment 2

[0074] The embodiment of the present application provides a construction method for a waterproof structure of a building basement entrance 20, including the following steps:

[0075] S1. During the construction of the basement, a drainage groove 11 is built on one side of the basement entrance 20;

[0076] S2. After the construction of the basement is completed, a U-shaped wall 10 and a top wall 18 are built on the ground of the basement entrance 20, and a storage groove 12 and an embedding groove 13 are reserved in the U-shaped wall 10;

[0077] S3. The cover plate 40 is installed on the ground under the lower side of the top wall 18, and the cover plate 40 abuts against the ground under the lower side of the top wall 18. The driving block 50 is installed in the drainage groove 11 and fixed to the cover plate 40;

[0078] S4. The locking assembly 90, the transmission cylinder 60 and the rotating shaft 14 are installed on two opposite walls of the U-shaped wall 10.

[0079] Embodiment 3

[0080] Refer to Figure 7The difference between this embodiment and the first embodiment is that the locking assembly 90 includes a ratchet 93 and a pawl 94. The ratchet 93 is fixed to the upper end surface of the transmission cylinder 60, and the ratchet 93 has a plurality of inner teeth 931 evenly distributed along the circumferential direction. A hinge groove 143 is provided on the outer peripheral wall of the rotating shaft 14, and a vertical shaft 144 is fixed on the bottom surface of the hinge groove 143. The pawl 94 is sleeved on the vertical shaft 144 and is rotatably connected to the vertical shaft 144. The pawl 94 cooperates with the ratchet 93 so that the shift plate 80 can only rotate in the direction close to the opening of the channel 30.

[0081] When the cover plate 40 is in a vertical state, the cover plate 40 drives the sealing baffle 70 to rotate around the rotating shaft 14 through the dial plate 80 and abut against the side of the cover plate 40 close to the basement entrance 20. The ratchet 93 and the pawl 94 cooperate to make it difficult for the sealing baffle 70 to rotate around the rotating shaft 14 in a direction away from the opening of the passage 30. The cover plate 40 presses the sealing baffle 70 under the push of the accumulated water on the ground. The cover plate 40 and the sealing baffle 70 cooperate to cover the opening of the passage 30, so that the accumulated water is not easy to flow into the basement entrance 20 through the passage 30.

[0082] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waterproof structure for a building basement entrance, characterized in that: Comprising: A U-shaped wall (10) surrounding three sides of the basement entrance; A top wall (18) fixed to the upper side of the U-shaped wall (10), and the top wall (18) and the U-shaped wall (10) cooperate to form a passage (30) opening towards one side; A cover plate (40) with hinge shafts (41) hinged to the U-shaped wall (10) provided on both opposite side walls. The hinge shafts (41) are provided on the side of the cover plate (40) away from the basement entrance, and the cover plate (40) can be turned around the hinge shafts (41) to cover the opening of the passage (30); A driving block (50) provided on the side of the cover plate (40) facing away from the basement entrance. A drainage groove (11) is provided on the lower side at the opening of the passage (30). The driving block (50) is arranged in the drainage groove (11) and can rotate around the hinge shaft (41) in the drainage groove (11). The driving block (50) has a water receiving groove (51) with an opening facing the opening of the drainage groove (11); A transmission cylinder (60) rotatably connected to the two opposite inner side walls of the U-shaped wall (10) along its circumferential direction. Receiving grooves (12) for receiving the transmission cylinder (60) are provided on the two opposite inner side walls of the U-shaped wall (10), and the transmission cylinder (60) is arranged vertically; A sealing flap (70) arranged along the axial direction of the transmission cylinder (60) on the outer peripheral wall of the transmission cylinder (60). The sealing flap (70) rotates with the transmission cylinder (60). Embedding grooves (13) for the sealing flap (70) to be embedded are provided on the two opposite inner side walls of the U-shaped wall (10), and the embedding grooves (13) communicate with the receiving grooves (12); A dial plate (80) fixed to the outer peripheral wall of the transmission cylinder (60) along the axial direction of the transmission cylinder (60). When the cover plate (40) is turned to cover the opening of the passage (30), it can drive the dial plate (80) to rotate towards the opening of the passage (30); And A locking assembly (90). When the cover plate (40) is turned to a vertical state, the sealing flap (70) slides out of the embedding groove (13) and abuts against the side of the cover plate (40) facing away from the opening of the passage (30), and the locking assembly (90) locks the sealing flap (70) to the U-shaped wall (10); A water blocking floating plate (52) is arranged in the water receiving groove (51). The water blocking floating plate (52) slides in the water receiving groove (51) along the opening direction of the water receiving groove (51). The water blocking floating plate (52) and the driving block (50) cooperate to form a water inlet gap (54), and the water inlet gap (54) is arranged on the side of the water blocking floating plate (52) close to the cover plate (40); Sliding shafts (521) are provided on the two opposite side walls of the water blocking floating plate (52). Sliding grooves (53) parallel to the opening direction of the water receiving groove (51) are provided on the inner side wall of the water receiving groove (51), and the sliding shafts (521) are slidably connected in the sliding grooves (53).

2. The building basement entrance waterproof structure according to claim 1, characterized in that: Rotating shafts (14) are fixed on two opposite walls of the C-shaped wall (10), and the transmission cylinder (60) is sleeved on the rotating shaft (14) and is rotatably connected to the rotating shaft (14).

3. The building basement entrance waterproof structure according to claim 2, characterized in that: The locking assembly (90) includes: A locking shaft (91) having an unlocking surface (911) parallel to the axis of the locking shaft (91). An arc-shaped rotating groove (141) is provided on the outer peripheral wall of the rotating shaft (14) for the locking shaft (91) to be inserted into. The locking shaft (91) can rotate within the rotating groove (141). A locking groove (61) is provided on the inner peripheral wall of the transmission cylinder (60). When the locking shaft (91) rotates within the rotating groove (141), it can be inserted into the locking groove (61); and A driving rod (92) fixed to the locking shaft (91). The driving rod (92) is perpendicular to the locking shaft (91). When the cover plate (40) flips to cover the opening of the channel (30), it can drive the driving rod (92) to rotate around the locking shaft (91). Accommodating grooves (142) for accommodating the driving rod (92) are provided on both sides of the rotating groove (141) of the rotating shaft (14); Initially, the locking shaft (91) is completely received in the rotating groove (141), and the transmission cylinder (60) is rotatably connected to the rotating shaft (14); when the cover plate (40) flips to a vertical state, the cover plate (40) drives the locking shaft (91) to rotate and insert into the locking groove (61), and the transmission cylinder (60) is fixed to the rotating shaft (14).

4. The building basement entrance waterproof structure according to claim 1, characterized in that: A drain cover plate (15) is provided at the opening of the drain groove (11), and a plurality of water permeable holes (151) are provided on the drain cover plate (15).

5. The building basement entrance waterproof structure according to claim 4, characterized in that: A floating plate (16) is provided at the bottom of the drain groove (11). The floating plate (16) is located directly below the drain cover plate (15) and floats in the vertical direction. Blocking blocks (161) corresponding to the water permeable holes (151) one by one are provided on the floating plate (16), and the blocking blocks (161) can be inserted into the water permeable holes (151) to block the water permeable holes (151).

6. The waterproof structure for building basement entrance according to claim 5, characterized in that: A vertically arranged guiding column (17) is provided in the drain groove (11). A guiding block (162) is fixed on the floating plate (16). The guiding block (162) is sleeved on the guiding column (17) and is slidably connected to the guiding column (17).

7. The waterproof structure for building basement entrance according to claim 5, characterized in that: A chamfer (163) is provided on the edge of the blocking block (161) away from the floating plate (16).

8. A construction method for a building basement entrance waterproof structure according to any one of claims 2 to 7, characterized in that: Including the following steps: S1. During the construction of the basement, a drain groove (11) is built on one side of the basement entrance; S2. After the construction of the basement is completed, a C-shaped wall (10) and a top wall (18) are built on the ground at the basement entrance. A receiving groove (12) and an embedding groove (13) are reserved in the C-shaped wall (10); S3. Install the cover plate (40) on the ground under the top wall (18), and install the driving block (50) in the drain trough (11) and fix it to the cover plate (40). S4. Install the locking assembly (90), the transmission cylinder (60), and the rotating shaft (14) on the two opposite walls of the U-shaped wall (10).

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