A prefabricated building used in construction engineering

Abstract

The present invention discloses an assembled building used in construction engineering, the technical field of assembled building, including a wall, the side wall of the wall is provided with an installation groove, and the inner wall of the installation groove is slidably connected with an inner plate, the inner part of the inner plate is rotatably connected with a screw, and the outer wall of the screw is rotatably connected with a sliding plate, the corresponding side walls of the sliding plate are rotatably connected with a connecting plate, a locking mechanism is provided between two adjacent connecting plates, the inner wall of the wall is provided with a first sliding groove, and the locking mechanism includes a shell, which is clamped and fixed with the wall. This assembled building used in construction engineering is clamped on the inner wall of the clamping hole by a plurality of limit columns, and then the two locking mechanisms are synchronously moved relative to each other by rotating the screw, which will drive the wall to move horizontally during the process. After the movement is completed, the two walls will fit tightly together, the assembly process is simple to operate, can ensure the strength of the connection, and can reduce the assembly cost at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, in particular to a prefabricated building used in construction projects. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories are processed and manufactured in factories and transported to construction sites, and assembled and installed on site through reliable connection methods. Compared with traditional construction methods, prefabricated buildings have the advantages of energy saving, environmental protection, and short construction period. They are conducive to the development of building industrialization, improving production efficiency and saving energy, developing green and environmentally friendly buildings, and are conducive to improving and ensuring the quality of construction projects. Prefabricated PC structures are conducive to green construction because prefabricated construction can better meet the requirements of green construction such as land saving, energy saving, material saving, water saving and environmental protection, and reduce negative impacts on the environment, including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site interference, saving water, electricity, materials and other resources and energy, and following the principles of sustainable development.

[0003] If the connection between the prefabricated walls is not strong enough, gaps will appear at the connection, which may easily cause the wall to shake. Generally, the strength of the connection needs to be ensured during assembly. Usually, it is necessary to weld multiple ear plates on the building panels. In order to ensure the strength of the connection, multiple bolt connection pairs are required to pass through the through holes on the corresponding ear plates to connect and fix the two adjacent building panels together.

[0004] After a long period of use, the assembled walls may develop cracks and bulges at the joints due to long-term exposure to rain. Rainwater may accumulate in the cracks and bulges, thus invading the interior of the wall, which may have a certain impact on the interior and affect the overall service life of the prefabricated building. Summary of the invention

[0005] The object of the present invention is to provide a prefabricated building for use in construction projects to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled building used in a construction project, comprising a wall, a side wall of the wall is provided with a mounting groove, and the inner wall of the mounting groove is slidably connected to an inner plate, the interior of the inner plate is rotatably connected to a screw, and the outer wall of the screw is rotatably connected to a sliding plate, the corresponding side walls of the sliding plate are both rotatably connected to a connecting plate, a locking mechanism is provided between two adjacent connecting plates, and the inner wall of the wall is provided with a first sliding groove;

[0007] The locking mechanism includes a housing for clamping and fixing with the wall during assembly;

[0008] A waterproof mechanism is arranged inside the first slide groove to protect the joints of the wall after assembly.

[0009] Preferably, a third sliding groove is provided inside the shell, and the inner wall of the third sliding groove is slidably connected to a plurality of inner plates, the side walls of the plurality of inner plates are fixedly connected to a limiting column, the end of the limiting column is fixedly connected to a third sliding block, the outer wall of the third sliding block is fixedly connected to a second spring at a position corresponding to the limiting column, and the end of the second spring away from the third sliding block is fixedly connected to the inner wall of the third sliding groove, the side wall of the shell is provided with a sliding hole, and the interior of the sliding hole is connected to the interior of the third sliding groove, the inner wall of the sliding hole is slidably connected to a push rod, and the end of the push rod away from the third sliding block is fixedly connected to a connecting ring, the side wall of the connecting ring is fixedly connected to a tension spring at a position corresponding to the outer wall of the push rod, and the end of the tension spring away from the connecting ring is fixedly connected to the side wall of the shell.

[0010] Preferably, a connecting rod is rotatably connected to the side wall of the shell, and one end of the connecting plate away from the sliding plate is fixedly connected to the outer wall of the connecting rod.

[0011] Preferably, the inner wall of the installation groove is provided with a clamping groove, and the inner wall of the clamping groove is provided with a plurality of clamping holes, the outer wall of the shell is slidably connected to the inner wall of the clamping groove, and the outer walls of the plurality of limiting columns are slidably connected to the inner walls of the plurality of clamping holes.

[0012] Preferably, the waterproof mechanism includes a sliding rod and a first sliding block, a first tooth groove is provided at the bottom of the sliding rod, and the inner wall of the first tooth groove is matched and meshed with a gear, a second tooth groove is provided at the top of the first sliding block, and the inner wall of the second tooth groove is matched and meshed with the teeth of the gear, and the side wall of the gear is rotatably connected to the side wall of the first sliding groove.

[0013] Preferably, the side wall of the first slider is slidably connected to the inner wall of the first slide groove, the outer wall of the wall is provided with a second slide groove, and the side wall of the second slide groove is slidably fixedly connected to a fixed rod, and the outer wall of the fixed rod is slidably connected to the second slider, and the outer wall of the second slider is slidably connected to the inner wall of the second slide groove.

[0014] Preferably, a waterproof plate is hinged on the side wall of the second sliding block, a first spring is fixedly connected to the side wall of the second sliding block, and an end of the first spring away from the second sliding block is fixedly connected to the inner wall of the second sliding groove.

[0015] Preferably, an oblique block is fixedly connected to the outer wall of the wall, and the inclined surface of the oblique block corresponds to the side wall of the waterproof board.

[0016] Preferably, a mounting opening is provided at the top of the screw rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. During assembly, multiple limit columns are clamped on the inner wall of the clamping hole, and then the two locking mechanisms are moved synchronously with each other by rotating the screw. During the process, the wall will be driven to move horizontally. After the movement is completed, the two walls will fit tightly together. The assembly process is simple to operate, which can ensure the strength of the connection and reduce the assembly cost.

[0019] 2. During assembly, when the wall is connected through the locking mechanism, the slide bar will be squeezed by the other wall, thereby driving the first slide block to slide through the gear, and then the second slide block drives the waterproof board to move to the joint of the two walls. The waterproof board can be tilted downward through the inclined block. In the subsequent use of the prefabricated building, rainwater can be effectively blocked to prevent rainwater from entering the joints between the walls, thereby increasing the overall service life of the prefabricated building. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structural connection of the locking mechanism of the present invention;

[0023] Figure 4 is a structural cross-sectional view of the locking mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the structural connection of the locking mechanism of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the waterproof mechanism of the present invention;

[0026] Figure 7 It is a cross-sectional view of the structural connection of the waterproof mechanism of the present invention.

[0027] In the figure: 1, wall; 2, installation groove; 3, inner plate; 4, screw; 5, sliding plate; 6, connecting plate; 7, locking mechanism; 8, clamping groove; 9, clamping hole; 10, first sliding groove; 11, waterproof mechanism; 12, second sliding groove; 13, inclined block; 14, installation port; 111, sliding rod; 112, first sliding block; 113, first tooth groove; 114, second tooth groove; 115, gear; 116, second sliding block; 117, fixing rod; 118, first spring; 119, waterproof board; 701, shell; 702, third sliding groove; 703, third sliding block; 704, limiting column; 705, second spring; 706, sliding hole; 707, push rod; 708, connecting ring; 709, tension spring; 710, connecting rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] For example, see Figure 1-7 The present invention provides an assembled building for use in a construction project, comprising a wall 1, a side wall of the wall 1 is provided with a mounting groove 2, and an inner plate 3 is slidably connected to the inner wall of the mounting groove 2, a screw 4 is rotatably connected to the inner part of the inner plate 3, and a sliding plate 5 is rotatably connected to the outer wall of the screw 4, and the corresponding two side walls of the sliding plate 5 are rotatably connected to connecting plates 6, a locking mechanism 7 is provided between two adjacent connecting plates 6, and a first sliding groove 10 is provided on the inner wall of the wall 1;

[0030] The locking mechanism 7 comprises a housing 701 , and a mounting opening 14 is formed at the top of the screw rod 4 .

[0031] Further, a third slide groove 702 is provided inside the shell 701, and the inner wall of the third slide groove 702 is slidably connected to a plurality of inner plates 3, the side walls of the plurality of inner plates 3 are fixedly connected to the limiting pillars 704, the end of the limiting pillars 704 is fixedly connected to the third slider 703, the outer wall of the third slider 703 is fixedly connected to the position corresponding to the limiting pillars 704, and the end of the second spring 705 away from the third slider 703 is fixedly connected to the inner wall of the third slide groove 702, the side wall of the shell 701 is provided with a sliding hole 706, and the sliding hole 706 The interior is connected with the interior of the third slide groove 702, the inner wall of the sliding hole 706 is slidably connected with a push rod 707, and the end of the push rod 707 away from the third sliding block 703 is fixedly connected with a connecting ring 708, the side wall of the connecting ring 708 is fixedly connected with a tension spring 709 at a position corresponding to the outer wall of the push rod 707, and the end of the tension spring 709 away from the connecting ring 708 is fixedly connected to the side wall of the shell 701, the side wall of the shell 701 is rotatably connected with a connecting rod 710, and the end of the connecting plate 6 away from the sliding plate 5 is fixedly connected to the outer wall of the connecting rod 710;

[0032] In this embodiment, the prefabricated building used in the construction project is a modern construction method, which is to transfer a large number of on-site operations in the traditional construction method to the factory, and then transport the prefabricated assembly parts to the area where they need to be installed. First, the wall 1 to be assembled is aligned, and then the inner plate 3 is placed between the two walls 1, and then the assembly work can be carried out;

[0033] First, use a tool to rotate the installation port 14 to drive the screw 4 to rotate. Since the outer wall of the screw 4 is provided with a thread, when the screw 4 rotates, it will drive the sliding plate 5 threadedly connected to the outer wall of the screw 4 to move. Since the two sections of the spiral grooves on the outer wall of the screw 4 are arranged in opposite directions, the two sliding plates 5 will slide in mutual directions. When the sliding plate 5 slides along the inner wall of the inner plate 3, it will also drive the end of the connecting plate 6 connected to it to move. The ends of the two connecting plates 6 away from the sliding plate 5 are fixedly connected to the outer wall of the connecting rod 710. Therefore, when the connecting plate 6 moves, it will rotate at an angle with the sliding plate 5 as the axis, and the locking mechanism 7 will move in the direction away from the inner plate 3. Movement, since the sliding distances of the two sliding plates 5 are consistent, the locking mechanism 7 will remain horizontal during the movement to ensure that it will not tilt. At this time, the locking mechanisms 7 on both sides of the inner plate 3 are in an outwardly stretched posture, and then the rotation of the screw rod 4 can be stopped, and then the wall 1 and the locking mechanism 7 can be connected, and the outer wall of the inner plate 3 is kept consistent with the inner wall of the installation groove 2. The inner wall of the installation groove 2 is provided with a connecting groove 8, and the inner wall of the connecting groove 8 is provided with a plurality of connecting holes 9. The outer wall of the shell 701 is slidably connected to the inner wall of the connecting groove 8, and the outer walls of the plurality of limit columns 704 are slidably connected to the inner walls of the plurality of connecting holes 9. At this time, the outer wall of the shell 701 will correspond to the inner wall of the connecting groove 8, and then the mounting port 14 is rotated to control the two locking mechanisms. When the locking cam 706 is in the state of being moved outward, the locking cam 706 is in the state of being moved outward, and the locking cam 706 is in the state of being moved outward. The slider 703 slides inwardly along the inner wall of the third sliding groove 702, and the third slider 703 drives the limiting column 704 to slide synchronously. Then, when the push rod 707 is completely separated from the inner wall of the third sliding groove 702, the third slider 703 drives the limiting column 704 to completely retract into the interior of the shell 701. At this time, the end of the third slider 703 is at the same height as the outer wall of the shell 701. Then, the mounting opening 14 is continuously rotated to push the locking mechanism 7 outward. When the two sliding plates 5 slide to the closest distance from each other, the shell 701 will completely enter the interior of the clamping groove 8. Then, the connecting ring 708 is released, and then the tension spring 709 will retract and reset, thereby driving the tension spring 709 to continue to move through the connecting ring 708.The tension spring 709 slides along the inner wall of the sliding hole 706 toward the inside of the third sliding groove 702, and then the tapered end of the sliding hole 706 squeezes the side walls of the plurality of third sliders 703, and then the third slider 703 compresses the second spring 705, and at the same time drives the limiting column 704 to slide outward, and then the limiting column 704 slides into the inside of the clamping hole 9, thereby completing the clamping connection between the locking mechanism 7 and the wall 1;

[0034] Then, the mounting opening 14 is rotated in the opposite direction to make the two sliding plates 5 slide away from each other at the same time, thereby driving the two locking mechanisms 7 to move relative to each other through the connecting plates 6 on both sides, and the locking mechanisms 7 will drive the wall 1 to move horizontally. During this process, the outer wall of the inner plate 3 will slide on the inner wall of the mounting groove 2. When the two sliding plates 5 slide to the farthest position from each other, the two walls 1 will fit together, thereby completing the assembly;

[0035] As described above, during assembly, multiple limit columns 704 are clamped on the inner wall of the clamping hole 9, and then the two locking mechanisms 7 are synchronously moved relative to each other by rotating the screw 4. During the process, the wall 1 will be driven to move horizontally. After the movement is completed, the two walls 1 will fit tightly together. The assembly process is simple to operate, which can ensure the strength of the connection and reduce the assembly cost.

[0036] Embodiment 2: Based on the above embodiment, a waterproof mechanism 11 is provided inside the first chute 10 .

[0037] Furthermore, the waterproof mechanism 11 includes a slide rod 111 and a first slider 112, a first tooth groove 113 is provided at the bottom of the slide rod 111, and the inner wall of the first tooth groove 113 is matched and meshed with a gear 115, a second tooth groove 114 is provided at the top of the first slider 112, and the inner wall of the second tooth groove 114 is matched and meshed with the gear teeth of the gear 115, the side wall of the gear 115 is rotatably connected to the side wall of the first slide groove 10, the side wall of the first slider 112 is slidably connected to the inner wall of the first slide groove 10, the outer wall of the wall 1 is provided with a second slide groove 12, and the second slide groove The side wall of the wall 12 is fixedly connected with a fixing rod 117, and the outer wall of the fixing rod 117 is slidably connected with a second slider 116, the outer wall of the second slider 116 is slidably connected to the inner wall of the second slide groove 12, the side wall of the second slider 116 is hinged with a waterproof plate 119, the side wall of the second slider 116 is fixedly connected with a first spring 118, and the end of the first spring 118 away from the second slider 116 is fixedly connected to the inner wall of the second slide groove 12, the outer wall of the wall 1 is fixedly connected with an inclined block 13, and the inclined surface of the inclined block 13 corresponds to the side wall of the waterproof plate 119;

[0038] In this embodiment, when the locking mechanism 7 is assembled and drives the wall 1 to move, when the two walls 1 are about to fit together, since the slide bar 111 protrudes from the side wall of the wall 1, the slide bar 111 will first contact the side wall of the other wall 1. During the subsequent movement of the two walls 1, the slide bar 111 will be squeezed and slide toward the inside of the wall 1. Then, the slide bar 111 will drive the gear 115 to rotate through the first tooth groove 113, and then the gear 115 will drive the first slider 112 to continue sliding on the inner wall of the first slide groove 10 through the second tooth groove 114. At the same time, the end of the first slider 112 will squeeze the second slider 116, so that the second slider 116 Sliding along the inner wall of the second slide groove 12, the first spring 118 will be compressed in the process, and the second slider 116 will slide on the outer wall of the first spring 118, so that the second slider 116 will not deviate during the sliding process, and the second slider 116 will drive the waterproof plate 119 to move synchronously. Since the side of the inclined block 13 corresponding to the waterproof plate 119 is an inclined surface, when the waterproof plate 119 moves, it will be lifted up by the inclined block 13, so that it will tilt. After the waterproof plate 119 moves, it will be at the joint of the two walls 1. When the prefabricated building encounters rainwater in subsequent use, the waterproof plate 119 can block rainwater at the joint.

[0039] As described above, during assembly, when the wall 1 is driven to be clamped through the locking mechanism 7, the slide bar 111 will be squeezed by the other wall 1, thereby driving the first slider 112 to slide through the gear 115, and then the second slider 116 drives the waterproof board 119 to move to the joint of the two walls 1. The waterproof board 119 can be tilted downward by the inclined block 13. In the subsequent use of the prefabricated building, rainwater is effectively blocked to prevent rainwater from entering the joint between the walls 1, thereby improving the overall service life of the prefabricated building.

[0040] Working principle: First, use a tool to rotate the installation port 14 to drive the screw 4 to rotate. Since the outer wall of the screw 4 is provided with a thread, when the screw 4 rotates, it will drive the sliding plate 5 that is threadedly connected to the outer wall of the screw 4 to move. Since the two sections of the spiral grooves on the outer wall of the screw 4 are arranged in opposite directions, the two sliding plates 5 will slide in mutual directions. When the sliding plate 5 slides along the inner wall of the inner plate 3, it will also drive the end of the connecting plate 6 connected to it to move. The ends of the two connecting plates 6 that are away from the sliding plate 5 are fixedly connected to the outer wall of the connecting rod 710. Therefore, when the connecting plate 6 moves, it will rotate at an angle with the sliding plate 5 as the axis, and the locking mechanism 7 will move away from the inner plate 3. The locking mechanisms 7 on both sides of the inner plate 3 are stretched outward, and then the screw rod 4 can be stopped, and then the wall 1 and the locking mechanism 7 can be connected to keep the outer wall of the inner plate 3 consistent with the inner wall of the mounting groove 2. At this time, the outer wall of the shell 701 will correspond to the inner wall of the engaging groove 8, and then the mounting opening 14 is rotated to control the two locking mechanisms 7 to continue to move horizontally outward. When the two sliding plates 5 slide against each other, the outer wall of the shell 701 fits the outer wall of the engaging groove 8 during the movement, and then slides into the inner part of the engaging groove 8. After that, since the limiting column 704 protrudes from the surface of the shell 701, the mounting opening 14 is stopped to stop the movement of the locking mechanism 7, and then the connecting ring 708 is pulled to drive the stop When the locking cam 706 is in the unlocking state, the locking cam 706 will be unlocked, and the locking cam 706 will be unlocked, so that the third locking cam 703 can be unlocked. The mounting opening 14 is rotated to push the locking mechanism 7 outwards. When the two sliding plates 5 slide to the closest distance with each other, the housing 701 will completely enter the inside of the clamping groove 8, and then the connecting ring 708 is loosened, and then the tension spring 709 will shrink and reset, thereby driving the tension spring 709 to continue to move through the connecting ring 708, and the tension spring 709 slides along the inner wall of the sliding hole 706 to the inside of the third sliding groove 702, and then the end taper of the sliding hole 706 squeezes the side walls of the plurality of third sliders 703, and then the third slider 703 compresses the second spring 705, and at the same time drives the limiting column 704 to slide outwards, and then the limiting column 704 slides to the inside of the clamping hole 9, thereby completing the clamping connection between the locking mechanism 7 and the wall 1;

[0041] During assembly, the locking mechanism 7 drives the wall 1 to move. When the two walls 1 are about to fit together, since the slide bar 111 protrudes from the side wall of the wall 1, the slide bar 111 will first contact the side wall of the other wall 1. During the subsequent movement of the two walls 1, the slide bar 111 will be squeezed and slide toward the inside of the wall 1. Then the slide bar 111 will drive the gear 115 to rotate through the first tooth groove 113, and then the gear 115 will drive the first slider 112 to continue sliding on the inner wall of the first slide groove 10 through the second tooth groove 114. At the same time, the end of the first slider 112 will squeeze the second slider 116, so that the second slider 116 moves along The inner wall of the second slide groove 12 slides, and the first spring 118 is compressed in the process. The second slider 116 slides on the outer wall of the first spring 118, so that the second slider 116 will not deviate during the sliding process. At the same time, the second slider 116 will drive the waterproof board 119 to move synchronously. Since the side of the inclined block 13 corresponding to the waterproof board 119 is an inclined surface, when the waterproof board 119 moves, it will be lifted up by the inclined block 13, thereby tilting. After the waterproof board 119 moves, it will be at the joint of the two walls 1. When the prefabricated building encounters rainwater in subsequent use, the waterproof board 119 can block rainwater at the joint.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled building for use in a construction project, comprising a wall (1), characterized in that: The side wall of the wall (1) is provided with a mounting groove (2), and the inner wall of the mounting groove (2) is slidably connected to an inner plate (3), the interior of the inner plate (3) is rotatably connected to a screw rod (4), and the outer wall of the screw rod (4) is rotatably connected to a sliding plate (5), the corresponding two side walls of the sliding plate (5) are rotatably connected to connecting plates (6), and a locking mechanism (7) is provided between two adjacent connecting plates (6), and the inner wall of the wall (1) is provided with a first sliding groove (10); The locking mechanism (7) comprises a housing (701) for being snap-fitted and fixed to the wall (1) during assembly; A waterproof mechanism (11) is provided inside the first slide groove (10) to protect the joints of the wall (1) after assembly; A third slide groove (702) is provided inside the shell (701), and the inner wall of the third slide groove (702) is slidably connected to a plurality of inner plates (3), and the side walls of the plurality of inner plates (3) are fixedly connected to a limiting column (704), and the end of the limiting column (704) is fixedly connected to a third slider (703); a second spring (705) is fixedly connected to a position of the outer wall of the third slider (703) corresponding to the limiting column (704), and an end of the second spring (705) away from the third slider (703) is fixedly connected to the inner wall of the third slide groove (702), and a sliding hole (706) is provided on the side wall of the shell (701), and the interior of the sliding hole (706) is aligned with the inner wall of the third slide groove (702). The interior is connected, the inner wall of the sliding hole (706) is slidably connected to a push rod (707), and the end of the push rod (707) away from the third sliding block (703) is fixedly connected to a connecting ring (708), the side wall of the connecting ring (708) is fixedly connected to a tension spring (709) at a position corresponding to the outer wall of the push rod (707), and the end of the tension spring (709) away from the connecting ring (708) is fixedly connected to the side wall of the shell (701); the side wall of the shell (701) is rotatably connected to a connecting rod (710), and the end of the connecting plate (6) away from the sliding plate (5) is fixedly connected to the outer wall of the connecting rod (710); the inner wall of the mounting groove (2) is provided with a clamping groove (8), The inner wall of the clamping groove (8) is provided with a plurality of clamping holes (9); the outer wall of the housing (701) is slidably connected to the inner wall of the clamping groove (8); the outer walls of the plurality of limit columns (704) are slidably connected to the inner walls of the plurality of clamping holes (9); the waterproof mechanism (11) comprises a slide rod (111) and a first slider (112); the bottom of the slide rod (111) is provided with a first tooth groove (113); the inner wall of the first tooth groove (113) is matched and meshed with a gear (115); the top of the first slider (112) is provided with a second tooth groove (114); the inner wall of the second tooth groove (114) is matched and meshed with the gear teeth of the gear (115); the side wall of the gear (115) is rotatably connected to the first slide groove (101); ); the side wall of the first slider (112) is slidably connected to the inner wall of the first slide groove (10), and the outer wall of the wall (1) is provided with a second slide groove (12); the side wall of the second slide groove (12) is fixedly connected to a fixing rod (117), and the outer wall of the fixing rod (117) is slidably connected to a second slider (116), and the outer wall of the second slider (116) is slidably connected to the inner wall of the second slide groove (12); the side wall of the second slider (116) is hinged with a waterproof plate (119), the side wall of the second slider (116) is fixedly connected to a first spring (118), and the end of the first spring (118) away from the second slider (116) is fixedly connected to the inner wall of the second slide groove (12);The outer wall of the wall (1) is fixedly connected with an inclined block (13), and the inclined surface of the inclined block (13) corresponds to the side wall of the waterproof board (119); the top of the screw rod (4) is provided with a mounting opening (14). ;

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