A flood control dam repair device and repair method for flood control and water conservancy project

By designing flood control dam repair devices for protective plates, handles, bonding rings and closed plates, the problem of external interference of uncondensed repair materials is solved, and the stability and effect of the dam repair process are optimized.

CN114837131BActive Publication Date: 2025-04-04黄华日
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Patent Information

Application Number
CN202210617614.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-01
Publication Date
2025-04-04
Estimated Expiration
2042-06-01

AI Technical Summary

Technical Problem

When the existing dam repair device is used, repair materials that have not yet been condensed are easily interfered by external factors, which affects stable condensation, and thus interferes with the repair process of the dam.

Method used

A flood control dam repair device for flood control and water conservancy projects is designed, including protective plates, handles, bonding rings and closing plates. By lifting the protective plates with the handles, the closing plates are covered on the outside of the cracks. The first needle tube is inserted into the inside of the cracks, and the piston barrel is removed, and after the repair material is drawn into the inside of the piston barrel, the piston barrel is re-fixed on the top of the protective plates. The bonding ring bonds the closing plates to the side of the dam to close the cracks to prevent the repair material from being disturbed by external factors before solidification.

Benefits of technology

It effectively prevents uncondensed repair materials from being disturbed by external rainwater and sand and dust, ensures that the repair materials will not be disturbed before they are solidified, and optimizes the stability and effect of dam repair.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a flood control dam repair device and a repair method for flood control and water conservancy projects, comprising a piston cylinder, a piston rod, a piston and a first needle tube, wherein the first needle tube is inserted into one side of the piston cylinder, and the piston is slidably connected to the inside of the piston cylinder, the piston rod is fixedly connected to the middle of one side of the piston, a closing plate is inserted into the middle of the first needle tube, and a clamp is fixedly connected to the contour circumference of the closing plate. When the present invention is in use, the protective plate is lifted by a handle, the closing plate is covered on the outside of the crack of the dam, the first needle tube is inserted into the inside of the crack, the piston cylinder is removed, and after the repair material is drawn into the inside of the piston cylinder, the piston cylinder is re-fixed on the top of the protective plate, the adhesive ring bonds the closing plate to the side of the dam, and the crack is sealed, so that the repair material will not be disturbed by rain and dust from the outside before solidification, and the protective plate optimizes the protective effect to prevent the damage of the closing plate caused by external impact.
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Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, and in particular to a flood control dam repair device and a repair method thereof for a flood control water conservancy project. Background Art

[0002] Concrete dams are mostly made of concrete and are usually built in deep and narrow valleys because only concrete can withstand the high water pressure at the bottom of the dam. Concrete dams can be subdivided into concrete gravity dams, concrete arch dams, concrete pier dams, etc. The main feature of concrete dams is that they use their own weight to support the water pressure.

[0003] When cracks appear in a concrete dam, the cracks in the dam body are eroded by rainwater, which can easily cause changes in the internal structure of the dam body and lead to a decrease in flood control and water storage capacity. Repair materials are needed to fill the cracks in the dam body to prevent the cracks from further expanding and maintain the stability of the dam body. When the existing dam repair device is in use, the repair material that has not yet solidified will be disturbed by external factors, which is not conducive to stable solidification and interferes with the repair process of the dam. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a flood control dam repair device and a repair method for a flood control and water conservancy project.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A flood control dam repair device for flood control and water conservancy projects, comprising a piston cylinder, a piston rod, a piston and a first needle tube, the first needle tube being inserted into one side of the piston cylinder, and the piston being slidably connected to the inside of the piston cylinder, the piston rod being fixedly connected to the middle of one side of the piston, a closing plate being inserted into the middle of the first needle tube, and a clamping ring being fixedly connected to the contour circumference of the closing plate, an adhesive ring being clamped on the side of the clamping ring away from the piston cylinder, a protective plate being fixedly connected to the middle of the side of the closing plate close to the piston cylinder, and a handle being fixedly connected to the middle of the side of the protective plate away from the closing plate.

[0007] Preferably, an annular groove is provided on the middle outer wall of the piston, and a sealing ring is clamped inside the annular groove, the outer diameter of the sealing ring is equal to the inner diameter of the piston cylinder, the inner wall of the piston cylinder away from the first needle tube is fixedly connected to a limiting ring, and the piston rod is inserted into the inside of the limiting ring.

[0008] Preferably, two positioning grooves are provided on the top of one side of the protective plate, and two positioning protrusions are provided on the outer wall of the piston cylinder close to the side of the protective plate, and the two positioning protrusions are respectively inserted into the inside of the two positioning grooves.

[0009] Preferably, the top of the protective plate close to the piston cylinder side is fixedly connected to a support plate, and the top of the support plate is fixedly connected to two limiting rings, the piston cylinder is inserted into the inside of the two limiting rings, and the top of the support plate fits against the outer wall of the bottom of the piston cylinder.

[0010] Preferably, the tops of the protective plate and the closing plate are plugged into the same slot, and a magnetic ring is fixedly connected to the inner wall of one side of the slot. The magnetic ring is made of permanent magnet material, and the first needle tube is plugged into the inside of the magnetic ring. The middle outer wall of the first needle tube is fixedly connected to an iron ring, and one side of the iron ring is in contact with the side of the magnetic ring.

[0011] Preferably, the same second needle tube is inserted into the top of the protective plate and the closing plate, and one end of the second needle tube is fixedly connected to a closing sleeve, and a sealing plug is inserted into the interior of the closing sleeve.

[0012] Preferably, the same third needle tube is inserted into the bottom of the protective plate and the closing plate, and one end of the third needle tube is fixedly connected to a threaded sleeve, one side of the threaded sleeve is threadedly connected to an exhaust pipe, and one end of the exhaust pipe is fixedly connected to an air pump.

[0013] Preferably, a first buffer box is provided in the middle of the exhaust pipe, and a first baffle is fixedly connected to the bottom of the inner wall of the first buffer box on one side close to the air pump, a second baffle is fixedly connected to the top of the inner wall on the other side of the first buffer box, two filters are fixedly connected between the second baffle and the first baffle, and a waste bag is fixedly connected to the middle position of the bottom of the first buffer box, and the waste bag is communicated with the interior of the first buffer box.

[0014] Preferably, a second buffer box is provided in the middle of the third needle tube, and two side plates are symmetrically fixed to the inner wall of the second buffer box on the side away from the closing plate, and two spring tubes are fixedly connected to the inner wall of the second buffer box on the side away from the side plate, and springs are provided inside the two spring tubes, and pressure rods are fixedly connected to one side of the two springs close to the side plates, and one end of the two pressure rods is fixedly connected to the same cover plate, and one side of the cover plate is in contact with the two side plates.

[0015] A method for repairing a flood control dam of a flood control and water conservancy project also includes a protective plate, a handle, an adhesive ring and a closing plate. The protective plate is lifted by the handle to cover the outer side of a crack in the dam. A first needle tube is inserted into the crack, and a piston cylinder is removed. After the repair material is pumped into the piston cylinder, the piston cylinder is re-fixed on the top of the protective plate. The adhesive ring adheres the closing plate to the side of the dam to seal the crack, so that the repair material will not be disturbed by external rain and dust before it solidifies. The protective plate optimizes the protective effect to prevent external impact from causing damage to the closing plate.

[0016] Compared with the prior art, the present invention provides a flood control dam repair device and a repair method for flood control and water conservancy projects, which have the following beneficial effects:

[0017] 1. By setting a protective plate, a handle, an adhesive ring and a closing plate, lift the protective plate by the handle, cover the closing plate on the outside of the crack of the dam, insert the first needle tube into the inside of the crack, remove the piston cylinder, draw the repair material into the piston cylinder, and then re-fix the piston cylinder on the top of the protective plate. The adhesive ring bonds the closing plate to the side of the dam to seal the crack, so that the repair material will not be disturbed by external rain and dust before it solidifies. The protective plate optimizes the protection function to prevent external impact from causing damage to the closing plate.

[0018] 2. By setting a sealing ring, the sealing ring plays a sealing role between the piston and the inner wall of the piston cylinder to prevent leakage of the repair material.

[0019] 3. By setting the magnetic ring and the iron ring, when installing the piston cylinder, the first needle tube is inserted into the slot and the magnetic ring, and the magnetic ring adsorbs and fixes the iron ring, thereby optimizing the stability of the piston cylinder.

[0020] 4. By setting up a second needle tube, a closing sleeve and a sealing plug, when injecting the repair material into the crack, the second needle tube is inserted into the crack, and the sealing plug is pulled out of the closing sleeve to connect the crack with the outside atmosphere to ensure the smooth flow of the repair material. After the injection is completed, the sealing plug is reinserted into the closing sleeve to complete the sealing.

[0021] 5. By setting up an air pump, a first baffle, a second baffle, a filter and a waste bag, the third needle is inserted into the crack. Before injection, the air pump draws air through the exhaust pipe to clean the internal dust so that the repair material can condense to be more stable. After the dust enters the first buffer box, the first baffle and the second baffle jointly form a barrier to prevent dust from entering the air pump and avoid clogging of the internal pipeline of the air pump. The two filters ensure that the airflow can flow smoothly and also play a role in intercepting dust. After turning off the air pump, the dust falls into the waste bag and is collected through the waste bag for centralized cleaning.

[0022] 6. By setting the cover plate, side plate and spring, when the air pump is operating, the pressure on the side of the cover plate close to the air pump decreases, and the air pressure difference on both sides causes the cover plate to leave the side plate, and then the gas can flow smoothly. After the injection is completed and the air pump stops operating, the air pressure on both sides of the cover plate returns to balance, and the spring pushes the cover plate back to its original position through the pressure rod, blocking the passage between the crack and the outside world, achieving the effect of automatic closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A structural cross-sectional view of a flood control dam repair device for a flood control and water conservancy project proposed by the present invention;

[0024] Figure 2 A schematic diagram of the structure of a flood control dam repair device for flood control and water conservancy projects proposed by the present invention;

[0025] Figure 3 A schematic diagram of the piston cylinder structure of a flood control dam repair device for flood control and water conservancy projects proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the flood control dam repair device for flood control and water conservancy projects proposed by the present invention at position B;

[0027] Figure 5 This is a schematic diagram of the structure of the flood control dam repair device for flood control and water conservancy projects proposed by the present invention at position C;

[0028] Figure 6 The present invention provides a schematic diagram of a cover plate structure of a flood control dam repair device for a flood control and water conservancy project.

[0029] In the figure: 1-protection plate, 2-handle, 3-adhesive ring, 4-closing plate, 5-clamp ring, 6-first needle tube, 7-second needle tube, 8-closing sleeve, 9-sealing plug, 10-limiting ring, 11-piston cylinder, 12-piston rod, 13-limiting ring, 14-support plate, 15-first buffer box, 16-air extraction pipe, 17-air pump, 18-first baffle, 19-waste bag, 20-filter screen, 21-threaded sleeve, 22-third needle tube, 23-second baffle, 24-slot, 25-iron ring, 26-magnetic ring, 27-positioning protrusion, 28-piston, 29-sealing ring, 30-second buffer box, 31-cover plate, 32-spring cylinder, 33-spring, 34-pressure rod, 35-side plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Example 1

[0034] Reference Figure 1-6 A flood control dam repair device for flood control and water conservancy projects includes a piston cylinder 11, a piston rod 12, a piston 28 and a first needle tube 6, the first needle tube 6 is inserted at one side of the piston cylinder 11, and the piston 28 is slidably connected to the inside of the piston cylinder 11, the piston rod 12 is fixedly connected to the middle of one side of the piston 28, a closing plate 4 is inserted at the middle of the first needle tube 6, and a clamping ring 5 is fixedly connected to the contour circumference of the closing plate 4, an adhesive ring 3 is clamped at the side of the clamping ring 5 away from the piston cylinder 11, and a protective plate 1 is fixedly connected to the middle of the side of the closing plate 4 close to the piston cylinder 11, and a handle 2 is fixedly connected to the middle of the side of the protective plate 1 away from the closing plate 4.

[0035] In the present invention, an annular groove is provided on the middle outer wall of the piston 28, and a sealing ring 29 is clamped inside the annular groove. The outer diameter of the sealing ring 29 is equal to the inner diameter of the piston cylinder 11. The inner wall of the piston cylinder 11 away from the first needle tube 6 is fixedly connected to the limiting ring 13. The piston rod 12 is inserted into the inside of the limiting ring 13. The sealing ring 29 plays a sealing role between the piston 28 and the inner wall of the piston cylinder 11 to prevent leakage of the repair material.

[0036] Among them, two positioning grooves are opened on the top of one side of the protective plate 1, and two positioning protrusions 27 are provided on the outer wall of the piston cylinder 11 close to the protective plate 1. The two positioning protrusions 27 are respectively inserted into the inside of the two positioning grooves, and the positioning protrusions 27 and the positioning grooves are mutually clamped to strengthen the connection between the piston cylinder 11 and the protective plate 1.

[0037] Among them, a support plate 14 is fixedly connected to the top of the protective plate 1 close to the piston cylinder 11, and two limiting rings 10 are fixedly connected to the top of the support plate 14. The piston cylinder 11 is inserted into the two limiting rings 10. The top of the support plate 14 fits with the outer wall of the bottom of the piston cylinder 11. The support plate 14 and the limiting rings 10 support the piston cylinder 11 to further reinforce the piston cylinder 11.

[0038] Among them, the top of the protective plate 1 and the closing plate 4 are plugged with the same slot 24, and the inner wall of one side of the slot 24 is fixedly connected with a magnetic ring 26, the magnetic ring 26 is made of permanent magnet material, the first needle tube 6 is plugged into the inside of the magnetic ring 26, and the middle outer wall of the first needle tube 6 is fixedly connected with an iron ring 25, one side of the iron ring 25 is in contact with the side of the magnetic ring 26, when the piston cylinder 11 is installed, the first needle tube 6 is inserted into the slot 24 and the magnetic ring 26, and the magnetic ring 26 adsorbs and fixes the iron ring 25 to optimize the stability of the piston cylinder 11.

[0039] Among them, the same second needle tube 7 is inserted at the top of the protective plate 1 and the closing plate 4, and one end of the second needle tube 7 is fixedly connected to a closing sleeve 8, and a sealing plug 9 is inserted inside the closing sleeve 8. When injecting repair material into the crack, the second needle tube 7 is inserted into the crack, and the sealing plug 9 pulls out the closing sleeve 8 to connect the crack with the outside atmosphere to ensure the smooth flow of the repair material. After the injection is completed, the sealing plug 9 is reinserted into the closing sleeve 8 to complete the sealing.

[0040] Among them, the same third needle tube 22 is inserted into the bottom of the protective plate 1 and the closing plate 4, and one end of the third needle tube 22 is fixedly connected to the threaded sleeve 21, one side of the threaded sleeve 21 is threadedly connected to the exhaust pipe 16, and one end of the exhaust pipe 16 is fixedly connected to the air pump 17. The third needle tube 22 is inserted into the crack. Before injection, the air pump 17 draws air through the exhaust pipe 16 to clean the dust inside so that the repair material can condense to be more stable.

[0041] Among them, a first buffer box 15 is arranged in the middle of the exhaust pipe 16, and a first baffle 18 is fixedly connected to the bottom of the inner wall of the first buffer box 15 on one side close to the air pump 17, and a second baffle 23 is fixedly connected to the top of the inner wall on the other side of the first buffer box 15. Two filters 20 are fixedly connected between the second baffle 23 and the first baffle 18, and a waste bag 19 is fixedly connected to the middle position of the bottom of the first buffer box 15. The waste bag 19 is connected to the interior of the first buffer box 15. After the dust enters the first buffer box 15, the first baffle 18 and the second baffle 23 jointly form a barrier to prevent the dust from entering the air pump 17 and avoid clogging of the internal pipeline of the air pump 17. The two filters 20 ensure that the airflow can circulate smoothly and play a role in intercepting dust. After the air pump 17 is turned off, the dust falls into the waste bag 19 and is collected by the waste bag 19 for centralized cleaning.

[0042] Among them, a second buffer box 30 is arranged in the middle of the third needle tube 22, and two side plates 35 are symmetrically fixed to the inner wall of the second buffer box 30 on the side away from the closing plate 4, and two spring tubes 32 are fixedly connected to the inner wall of the second buffer box 30 on the side away from the side plate 35, and springs 33 are arranged inside the two spring tubes 32, and pressure rods 34 are fixedly connected to the sides of the two springs 33 close to the side plates 35, and one end of the two pressure rods 34 is fixedly connected to the same cover plate 31, and one side of the cover plate 31 is fitted with the two side plates 35. When the air pump 17 is operating, the pressure on the side of the cover plate 31 close to the air pump 17 decreases, and the air pressure difference on both sides causes the cover plate 31 to leave the side plate 35, and then the gas can flow smoothly. After the injection is completed and the air pump 17 stops operating, the air pressure on both sides of the cover plate 31 is restored to balance, and the spring 33 pushes the cover plate 31 to return to its original position through the pressure rod 34, thereby blocking the passage between the crack and the outside world, and achieving the effect of automatic closing.

[0043] Example 2

[0044] Reference Figure 1-6 A method for repairing a flood control dam of a flood control and water conservancy project also includes a protective plate 1, a handle 2, an adhesive ring 3 and a closing plate 4. The protective plate 1 is lifted by the handle 2, and the closing plate 4 is covered on the outside of the crack of the dam. The first needle tube 6 is inserted into the inside of the crack, and the piston cylinder 11 is removed. After the repair material is drawn into the piston cylinder 11, the piston cylinder 11 is re-fixed on the top of the protective plate 1. The adhesive ring 3 bonds the closing plate 4 to the side of the dam to seal the crack, so that the repair material will not be disturbed by external rain and dust before it solidifies and stabilizes. The protective plate 1 optimizes the protection function to prevent the closing plate 4 from being damaged by external impact.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flood control dam repair device for a flood control and water conservancy project, comprising a piston cylinder (11), a piston rod (12), a piston (28) and a first needle tube (6), wherein the first needle tube (6) is plugged into one side of the piston cylinder (11), and the piston (28) is slidably connected to the inside of the piston cylinder (11), and the piston rod (12) is fixedly connected to the middle part of one side of the piston (28), characterized in that: A closing plate (4) is inserted into the middle of the first needle tube (6), and a clamping ring (5) is fixedly connected to the circumference of the outline of the closing plate (4), an adhesive ring (3) is clamped to the side of the clamping ring (5) away from the piston cylinder (11), and a protective plate (1) is fixedly connected to the middle of the side of the closing plate (4) close to the piston cylinder (11), and a handle (2) is fixedly connected to the middle of the side of the protective plate (1) away from the closing plate (4); The top of the protective plate (1) and the closing plate (4) are plugged with a same slot (24), and a magnetic ring (26) is fixedly connected to the inner wall of one side of the slot (24), and the magnetic ring (26) is made of a permanent magnet material. The first needle tube (6) is plugged into the inside of the magnetic ring (26), and the circumference of the middle outer wall of the first needle tube (6) is fixedly connected to an iron ring (25), and one side of the iron ring (25) is in contact with the side of the magnetic ring (26); the top of the protective plate (1) and the closing plate (4) are plugged with a same second needle tube (7), and the second needle tube (7) is fixedly connected to the inner wall of the first needle tube (6). One end of the tube (7) is fixedly connected to a closing sleeve (8), and a sealing plug (9) is inserted into the interior of the closing sleeve (8); the bottom of the protective plate (1) and the closing plate (4) is plugged with a third needle tube (22), and one end of the third needle tube (22) is fixedly connected to a threaded sleeve (21), one side of the threaded sleeve (21) is threadedly connected to an exhaust pipe (16), and one end of the exhaust pipe (16) is fixedly connected to an air pump (17); a first buffer box (15) is provided in the middle of the exhaust pipe (16), and the first buffer box (15) ) is fixedly connected to the bottom of the inner wall on one side close to the air pump (17), and a second baffle (23) is fixedly connected to the top of the inner wall on the other side of the first buffer box (15). Two filter screens (20) are fixedly connected between the second baffle (23) and the first baffle (18). A waste bag (19) is fixedly connected to the middle position of the bottom of the first buffer box (15), and the waste bag (19) is connected to the interior of the first buffer box (15); a second buffer box (30) is arranged in the middle of the third needle tube (22), and the first buffer box (30) is fixedly connected to the second baffle (23). Two side plates (35) are symmetrically fixed to the inner wall of the second buffer box (30) on the side away from the closing plate (4); two spring cylinders (32) are fixedly connected to the inner wall of the second buffer box (30) on the side away from the side plates (35); springs (33) are arranged inside the two spring cylinders (32); pressure rods (34) are fixedly connected to the sides of the two springs (33) close to the side plates (35); one end of the two pressure rods (34) is fixedly connected to the same cover plate (31); one side of the cover plate (31) is in contact with the two side plates (35).

2. A flood control dam repair device for flood control and water conservancy projects according to claim 1, characterized in that: An annular groove is formed on the middle outer wall of the piston (28), and a sealing ring (29) is clamped inside the annular groove. The outer diameter of the sealing ring (29) is equal to the inner diameter of the piston cylinder (11). The inner wall of the piston cylinder (11) away from the first needle tube (6) is fixedly connected to the limiting ring (13), and the piston rod (12) is inserted into the inside of the limiting ring (13).

3. A flood control dam repair device for flood control and water conservancy projects according to claim 1, characterized in that: Two positioning grooves are provided at the top of one side of the protective plate (1), and two positioning protrusions (27) are provided on the outer wall of the piston cylinder (11) on the side close to the protective plate (1), and the two positioning protrusions (27) are respectively inserted into the inside of the two positioning grooves.

4. A flood control dam repair device for flood control and water conservancy projects according to claim 1, characterized in that: A support plate (14) is fixedly connected to the top of the protective plate (1) on the side close to the piston cylinder (11), and two limit rings (10) are fixedly connected to the top of the support plate (14). The piston cylinder (11) is inserted into the inside of the two limit rings (10), and the top of the support plate (14) fits the outer wall of the bottom of the piston cylinder (11).

5. A method for repairing a flood control dam of a flood control and water conservancy project according to any one of claims 1 to 4, comprising the following steps: Step 1: comprising a protective plate (1), a handle (2), an adhesive ring (3) and a closing plate (4), wherein the protective plate (1) is lifted by the handle (2), and the closing plate (4) is covered on the outside of the crack of the dam, the first needle tube (6) is inserted into the inside of the crack, the piston cylinder (11) is removed, and after the repair material is pumped into the inside of the piston cylinder (11), the piston cylinder (11) is re-fixed on the top of the protective plate (1), and the adhesive ring (3) is used to bond the closing plate (4) to the side of the dam to seal the crack, so that the repair material will not be disturbed by external rain and dust before solidification, and the protective plate (1) optimizes the protective effect to prevent the closing plate (4) from being damaged by external impact; Step 2: When injecting the repair material into the crack, the second needle tube (7) is inserted into the crack, and the sealing plug (9) is pulled out of the closing sleeve (8) to connect the crack with the outside atmosphere to ensure the smooth flow of the repair material. After the injection is completed, the sealing plug (9) is reinserted into the closing sleeve (8) to complete the sealing; Step 3: insert the third needle tube (22) into the crack. Before injection, the air pump (17) draws air through the air extraction tube (16) to clean the dust inside so that the repair material can solidify and become more stable. Step 4: When the air pump (17) is in operation, the pressure on the side of the cover plate (31) close to the air pump (17) decreases. The pressure difference on both sides causes the cover plate (31) to leave the side plate (35), and then the gas can flow smoothly. After the injection is completed, after the air pump (17) stops operating, the air pressure on both sides of the cover plate (31) returns to balance, and the spring (33) pushes the cover plate (31) back to its original position through the pressure rod (34), thereby blocking the passage between the crack and the outside world and achieving the effect of automatic closing.

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