Foundation pit supporting and repairing structure and construction method thereof

Abstract

The invention provides a foundation pit supporting and repairing structure and a construction method thereof, and relates to the field of building construction basic equipment. According to the foundation pit supporting and repairing structure and the construction method thereof, the foundation pit supporting and repairing structure comprises foundation pit supporting row piles, a telescopic mechanism, a cover plate and a rotating mechanism. According to the device, a telescopic mechanism, a rotating mechanism and a cover plate are arranged, a double-shaft motor is controlled to operate, two sets of threaded columns are driven to rotate, under cooperation of the two sets of threaded columns and two sets of threaded pipes, the cover plate is driven to cover the position of a crack, and the cover plate is installed on the side faces of the threaded pipes through first fixing plates and bolts; a constructor can detach and replace the cover plate with a proper size according to the crack length, then local repairing is conveniently completed, only a small amount of repairing materials are needed for local repairing, the material cost is reduced, and after concrete grout is solidified, the cover plate, the anti-skid plate and the limiting plate are controlled to be separated from the foundation pit supporting row pile by controlling a double-shaft motor and an electric push rod to operate; and other local cracks can be conveniently repaired.

Description

Technical Field

[0001] The invention relates to the field of building construction infrastructure equipment, and in particular to a foundation pit support and repair structure and a construction method thereof. Background Art

[0002] With the rapid development and increase of high-rise buildings, foundation pits will become larger and deeper, and the construction of foundation pit support structures will become more and more difficult. During the construction process, in order to ensure the safety and convenience of underground structure construction and the surrounding environment of deep foundation pits, support and reinforcement measures must be taken for the side walls of deep foundation pits and the surrounding environment.

[0003] After searching, the existing patent (publication number: CN109826200B) discloses a foundation pit support repair structure and a construction method thereof, wherein the repair expansion ring has two rolled ends, and the two rolled ends of the repair expansion ring can move relative to each other. At least two one-way locking mechanisms are arranged between the two rolled ends of the repair expansion ring, and the one-way locking mechanisms are used to limit the retraction of the two rolled ends of the repair expansion ring; the repair frame includes two installation rubber rings that are sleeved outside the repair expansion ring and are arranged in upper and lower positions, and a number of steel bars are arranged at equal intervals in the circumferential direction between the two installation rubber rings; after being inflated, the airbag body can drive the inner diameter of the repair expansion ring to expand so that the installation rubber ring is tightly attached to the inner wall of the foundation pit support pile row, and a grouting space is formed by enclosing the two installation rubber rings, the outer wall of the repair expansion ring and the inner wall of the foundation pit support pile row, and the grouting pipe is used to pass concrete slurry into the grouting space. The present invention has the characteristics of high convenience in the repair of foundation pit support pile rows.

[0004] During the use of the above device, for partially damaged foundation pit support piles, the cost-effectiveness of repairing the whole circle is low, which will cause waste of resources and a long construction period. When multiple cracks appear on the inner wall of the foundation pit support pile, when the above device repairs one crack, it is necessary to control the retraction of the repair expansion circle through a one-way locking mechanism to remove the repair expansion circle, and then install the repair expansion circle and the airbag body according to the position of other cracks to repair the cracks. The process is relatively complicated. Therefore, it is of great significance to develop an efficient repair structure and construction method for local damage of multiple cracks. Summary of the invention

[0005] 1. Technical problems solved In view of the deficiencies in the prior art, the present invention provides a foundation pit support and repair structure and a construction method thereof, which solve the problems raised in the background technology.

[0006] 2. Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: A foundation pit support and repair structure comprises a foundation pit support pile row, a telescopic mechanism, a cover plate and a rotating mechanism, wherein the telescopic mechanism is movably installed inside the foundation pit support pile row, the cover plate is arranged at the left end of the telescopic mechanism, and the rotating mechanism is arranged at the upper end of the telescopic mechanism, the telescopic mechanism comprises a shell, a transmission compartment is provided inside the shell, a dual-axis motor is fixedly connected inside the transmission compartment, both ends of the dual-axis motor output shaft are fixedly connected with threaded columns, two groups of the threaded columns are threadedly connected with threaded tubes at one end away from the two groups of the threaded tubes are fixedly connected with a first fixing plate at one end away from the two groups of the threaded tubes, the first fixing plate is threadedly connected with bolts inside, and the The cover plate is installed on the left side of the threaded tube at the left end through the first fixing plate and bolts, a sealing ring is provided on the left end of the cover plate, and an anti-skid plate is installed on the right side of the threaded tube at the right end through the first fixing plate and bolts, a slider is fixedly connected to the side of the threaded tube, a slide groove is provided inside the transmission bin, the slider is slidably connected inside the slide groove, the rotating mechanism includes a fixed seat, a forward and reverse motor is fixedly connected inside the fixed seat, a rotating shaft is fixedly connected to the lower end of the output shaft of the forward and reverse motor, a bearing is penetrated on the lower surface of the fixed seat, the rotating shaft is penetrated inside the bearing, a turntable is fixedly connected to the lower end of the turntable, and the shell is fixedly connected to the lower end of the turntable; Through the above technical scheme, by setting up a telescopic mechanism, a rotating mechanism and a cover plate, by controlling the operation of the forward and reverse motors, the turntable is driven to rotate, and then it is convenient to drive the cover plate to the corresponding position of the appropriate crack, by controlling the operation of the dual-axis motor, the two groups of threaded columns are driven to rotate, and with the cooperation of the two groups of threaded columns and the two groups of threaded pipes, the cover plate is driven to cover the position of the crack, and the anti-slip plate is driven to support the foundation pit support pile row. The sealing ring makes the cover plate fit more closely with the foundation pit support pile row, and the cover plate is installed on the side of the threaded pipe through the first fixing plate and bolts. Construction personnel can remove and replace the cover plate with a suitable size according to the length of the crack, so as to facilitate the completion of local repair. Local repair only requires the use of a small amount of repair material, reducing material costs.

[0007] Furthermore, a camera mechanism is provided at the lower end of the housing. There are two camera mechanisms in total and they are symmetrically arranged at the lower end of the housing. The camera mechanism has a viewing angle of 180 degrees and is connected to an external display. Through the above technical solution, construction workers can observe the location, shape and degree of damage of cracks inside the foundation pit support piles in real time through the camera mechanism. According to the images and data provided by the camera mechanism, construction workers can formulate more accurate repair plans, avoid unnecessary repair work, and improve work efficiency.

[0008] Furthermore, a first slide rail is provided on the lower surface of the fixed seat, a second slide rail is provided on the upper surface of the rotating disk, balls are rollingly connected inside the first slide rail and the second slide rail, and there are a plurality of groups of balls, which are symmetrically arranged inside the first slide rail and the second slide rail; Through the above technical solution, when the turntable is rotating, with the cooperation of the first slide rail, the second slide rail and the ball bearing, the turntable is prevented from tilting during the rotation, thereby improving the stability of the device.

[0009] Furthermore, a second fixing plate is fixedly connected to the upper surface of the fixing seat, and there are two groups of the second fixing plates, which are symmetrically arranged on the upper surface of the fixing seat, and the opposite sides of the two groups of the second fixing plates are fixedly connected to electric push rods, and the two groups of the electric push rods are fixedly connected to the limit plate away from one end; Through the above technical solution, by controlling the operation of two sets of electric push rods, the two sets of limit plates are driven to move in opposite directions, so that the limit plates fit into the foundation pit support piles to fix the rotating mechanism.

[0010] Furthermore, a grouting pipe is provided in communication with the upper end of the cover plate; According to the technical solution, grouting inside the cover plate can be easily performed through the grouting pipe.

[0011] Furthermore, a traction rope is provided at the upper end of the fixing seat, and the traction rope cooperates with an external crane; Through the above technical solution, by cooperating with the traction rope and the external crane, it is convenient to adjust the height of the telescopic mechanism, the rotating mechanism and the cover plate, so as to facilitate the repair of cracks of different heights.

[0012] Applied to a foundation pit support and repair structure and a construction method thereof, comprising the following steps: S1: First, remove the soil inside the foundation pit support piles and clean the surface area where the cracks of the foundation pit support piles are located; S2: Place the telescopic mechanism, rotating mechanism and cover plate into the foundation pit support pile row, observe the location of the cracks in the foundation pit support pile row through the camera mechanism, first repair the cracks at the bottom of the foundation pit support pile row, and control the external crane to drive the telescopic mechanism, rotating mechanism and cover plate to move up and down to the appropriate position; S3: By controlling the operation of two sets of electric push rods, the two sets of limit plates are driven to move in opposite directions, so that the limit plates fit into the foundation pit support piles to fix the rotating mechanism; S4: By controlling the operation of the forward and reverse motors, the turntable is driven to rotate, and then the cover plate is driven to the corresponding position of the appropriate crack. By controlling the operation of the dual-axis motor, the two sets of threaded columns are driven to rotate. With the cooperation of the two sets of threaded columns and two sets of threaded pipes, the cover plate is driven to cover the position of the crack, and the anti-slide plate is driven to support in the foundation pit support pile row. The sealing ring makes the cover plate and the foundation pit support pile row fit more closely; S5: injecting concrete slurry into the grouting space formed by the inner wall of the cover plate through the grouting pipe; S6: The foundation pit support piles are left stationary, and after the concrete slurry solidifies, the cover plate, the anti-slip plate and the limit plate are controlled to separate from the foundation pit support piles by controlling the operation of the dual-axis motor and the electric push rod; S7: Then, the positions of other cracks in the foundation pit support piles are observed through the camera mechanism, and the crane is controlled to operate from bottom to top to drive the telescopic mechanism, the rotating mechanism and the cover plate to the appropriate positions, and the above steps are repeated until all local cracks are removed; S8: The cover plate is installed on the side of the threaded pipe through the first fixing plate and bolts. The construction personnel can remove and replace the cover plate with the appropriate size according to the length of the crack.

[0013] 3. Beneficial effects The present invention provides a foundation pit support and repair structure and a construction method thereof. It has the following beneficial effects: 1. The present invention provides a foundation pit support and repair structure and a construction method thereof. A telescopic mechanism, a rotating mechanism and a cover plate are set, and the operation of the forward and reverse motors is controlled to drive the turntable to rotate, so as to facilitate driving the cover plate to a suitable position corresponding to the crack. The operation of the double-axis motor is controlled to drive the two groups of threaded columns to rotate. With the cooperation of the two groups of threaded columns and the two groups of threaded pipes, the cover plate is driven to cover the position of the crack, and the anti-slide plate is driven to support the foundation pit support pile row. The sealing ring makes the cover plate fit more closely with the foundation pit support pile row, and the cover plate is installed on the side of the threaded pipe through a first fixing plate and bolts. Construction personnel can remove and replace the cover plate with a suitable size according to the length of the crack, so as to facilitate local repair. Only a small amount of repair material is needed for local repair, which reduces the material cost. After waiting for the concrete slurry to solidify, the double-axis motor and the electric push rod are controlled to operate to control the cover plate, the anti-slide plate and the limit plate to be separated from the foundation pit support pile row, so as to facilitate repairing other local cracks.

[0014] 2. The present invention provides a foundation pit support repair structure and a construction method thereof. By setting up a camera mechanism, construction workers can observe the location, shape and degree of damage of cracks inside the foundation pit support piles in real time through the camera mechanism. According to the images and data provided by the camera mechanism, construction workers can formulate a more accurate repair plan, avoid unnecessary repair work, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the installation of the foundation pit support pile row of the present invention; Figure 2 It is a schematic diagram of the installation of the telescopic mechanism and the rotating mechanism of the present invention; Figure 3 It is a schematic diagram of a three-dimensional front view of a foundation pit support pile row of the present invention; Figure 4 It is a schematic diagram of a front view of a three-dimensional cross-section of the telescopic mechanism of the present invention; Figure 5 For the present invention Figure 2 Schematic diagram at A in the middle; Figure 6 It is a schematic diagram of a front view and a three-dimensional cross-section of the rotating mechanism of the present invention.

[0016] Among them, 1. foundation pit support pile row; 2. telescopic mechanism; 201. shell; 202. transmission compartment; 203. dual-axis motor; 204. threaded column; 205. threaded pipe; 206. slider; 207. slide groove; 3. cover plate; 4. sealing ring; 5. anti-skid plate; 6. camera mechanism; 7. first fixed plate; 8. bolt; 9. rotating mechanism; 901. fixed seat; 902. forward and reverse motor; 903. rotating shaft; 904. bearing; 905. first slide rail; 906. second slide rail; 907. ball; 908. turntable; 10. second fixed plate; 11. electric push rod; 12. limit plate; 13. grouting pipe; 14. traction rope. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the specific embodiments of the present invention to clearly and completely describe the technical solutions in the specific embodiments of the present invention. Obviously, the specific embodiments described are only part of the specific embodiments of the present invention, not all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Specific implementation 1: like Figure 1-6As shown, a specific embodiment of the present invention provides a foundation pit support repair structure, including a foundation pit support pile row 1, a telescopic mechanism 2, a cover plate 3 and a rotating mechanism 9, the telescopic mechanism 2 is movably installed inside the foundation pit support pile row 1, the cover plate 3 is arranged at the left end of the telescopic mechanism 2, and the rotating mechanism 9 is arranged at the upper end of the telescopic mechanism 2, the telescopic mechanism 2 includes a shell 201, a transmission compartment 202 is opened inside the shell 201, a dual-axis motor 203 is fixedly connected inside the transmission compartment 202, both ends of the output shaft of the dual-axis motor 203 are fixedly connected with threaded columns 204, and the two groups of threaded columns 204 are far away from each other. One end is threadedly connected with a threaded tube 205, and the two groups of threaded tubes 205 are fixedly connected with a first fixing plate 7 away from one end. The first fixing plate 7 is internally threadedly connected with a bolt 8. The cover plate 3 is installed on the left side of the left end threaded tube 205 through the first fixing plate 7 and the bolt 8. The left end of the cover plate 3 is provided with a sealing ring 4, and the right side of the right end threaded tube 205 is installed with an anti-slip plate 5 through the first fixing plate 7 and the bolt 8. The side of the threaded tube 205 is fixedly connected with a slider 206, and a slide groove 207 is opened inside the transmission compartment 202. The slider 206 is slidably connected inside the slide groove 207, and the rotating mechanism 9 The fixing base 901 includes a fixed base 901, a forward and reverse motor 902 is fixedly connected inside the fixing base 901, a rotating shaft 903 is fixedly connected to the lower end of the output shaft of the forward and reverse motor 902, a bearing 904 is penetrated through the lower surface of the fixing base 901, the rotating shaft 903 is penetrated inside the bearing 904, a rotating disk 908 is fixedly connected to the lower end of the rotating shaft 903, and the housing 201 is fixedly connected to the lower end of the rotating disk 908. By setting a telescopic mechanism 2, a rotating mechanism 9 and a cover plate 3, the operation of the forward and reverse motor 902 is controlled to drive the rotating disk 908 to rotate, thereby facilitating driving the cover plate 3 to a suitable position corresponding to the crack, By controlling the operation of the dual-axis motor 203, the two groups of threaded columns 204 are driven to rotate. With the cooperation of the two groups of threaded columns 204 and the two groups of threaded tubes 205, the cover plate 3 is driven to cover the position of the crack, and the anti-slip plate 5 is driven to support in the foundation pit support pile row 1. The sealing ring 4 makes the cover plate 3 and the foundation pit support pile row 1 fit better, and the cover plate 3 is installed on the side of the threaded tube 205 through the first fixing plate 7 and the bolt 8. The construction personnel can remove and replace the cover plate 3 with a suitable size according to the length of the crack, which is convenient for completing local repair. Local repair only needs to use a small amount of repair material, reducing material costs.

[0019] according to Figure 2 As shown, a camera mechanism 6 is provided at the lower end of the shell 201. There are two groups of camera mechanisms 6, which are symmetrically arranged at the lower end of the shell 201. The camera mechanism 6 has a viewing angle of 180 degrees. The camera mechanism 6 is connected to an external display. Through the camera mechanism 6, construction personnel can observe the crack position, shape and damage degree inside the foundation pit support pile row 1 in real time. According to the images and data provided by the camera mechanism 1, construction personnel can formulate a more accurate repair plan, avoid unnecessary repair work, and improve work efficiency.

[0020] according to Figure 2 and Figure 6 As shown, a first slide rail 905 is provided on the lower surface of the fixed seat 901, and a second slide rail 906 is provided on the upper surface of the turntable 908. Balls 907 are rollingly connected inside the first slide rail 905 and the second slide rail 906. There are multiple groups of ball bearings 907, which are symmetrically arranged inside the first slide rail 905 and the second slide rail 906. When the turntable 908 is rotating, with the cooperation of the first slide rail 905, the second slide rail 906 and the ball bearings 907, the turntable 908 is prevented from tilting during the rotation, thereby improving the stability of the device.

[0021] according to Figure 2 and Figure 6 As shown, a second fixing plate 10 is fixedly connected to the upper surface of the fixing seat 901. There are two groups of second fixing plates 10, which are symmetrically arranged on the upper surface of the fixing seat 901. The opposite sides of the two groups of second fixing plates 10 are fixedly connected with electric push rods 11. The two groups of electric push rods 11 are fixedly connected with limiting plates 12 away from one end. By controlling the operation of the two groups of electric push rods 11, the two groups of limiting plates 12 are driven to move in opposite directions, so that the limiting plates 12 fit into the foundation pit support pile row 1 to fix the rotating mechanism 9.

[0022] according to Figure 2 and Figure 6 As shown, a grouting pipe 13 is connected to the upper end of the cover plate 3, and a traction rope 14 is provided at the upper end of the fixed seat 901. The traction rope 14 cooperates with an external crane. The grouting pipe 13 is used to facilitate grouting inside the cover plate 3. The traction rope 14 cooperates with the external crane to facilitate adjusting the heights of the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3, so as to facilitate repairing cracks of different heights.

[0023] The present application also discloses a foundation pit support and repair structure and a construction method thereof, which is applicable to the super-high masonry wall mentioned above, and the construction steps are as follows: S1: firstly, excavate the soil in the foundation pit support pile row 1, and clean the surface area where the cracks of the foundation pit support pile row 1 are located; S2: Place the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 into the foundation pit support pile row 1, observe the position of the cracks in the foundation pit support pile row 1 through the camera mechanism 6, first repair the cracks at the bottom of the foundation pit support pile row 1, and control the external crane to drive the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 to move up and down to a suitable position; S3: By controlling the two sets of electric push rods 11 to operate, the two sets of limit plates 12 are driven to move in opposite directions, so that the limit plates 12 fit into the foundation pit support pile row 1 to fix the rotating mechanism 9; S4: By controlling the operation of the forward and reverse motors 902, the turntable 908 is driven to rotate, and then the cover plate 3 is driven to the corresponding position of the appropriate crack. By controlling the operation of the dual-axis motor 203, the two sets of threaded columns 204 are driven to rotate. With the cooperation of the two sets of threaded columns 204 and the two sets of threaded tubes 205, the cover plate 3 is driven to cover the position of the crack, and the anti-slide plate 5 is driven to support in the foundation pit support pile 1. The sealing ring 4 makes the cover plate 3 and the foundation pit support pile 1 fit better. S5: injecting concrete slurry into the grouting space formed by the inner wall of the cover plate 3 through the grouting pipe 13; S6: The foundation pit support pile row 1 is left stationary, and after the concrete slurry solidifies, the double-axis motor 203 and the electric push rod 11 are controlled to operate, so as to control the cover plate 3, the anti-slip plate 5 and the limit plate 12 to separate from the foundation pit support pile row 1; S7: Then, the positions of other cracks in the foundation pit support pile row 1 are observed through the camera mechanism 6, and the crane is controlled to operate from bottom to top to drive the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 to the appropriate positions, and the above steps are repeated until all local cracks are removed; S8: The cover plate 3 is installed on the side of the threaded pipe 205 through the first fixing plate 7 and the bolts 8. The construction personnel can remove and replace the cover plate 3 with a suitable size according to the length of the crack.

[0024] In the above embodiment, the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 are placed in the foundation pit support pile row 1, and the position of the crack in the foundation pit support pile row 1 is observed by the camera mechanism 6. First, the crack at the bottom of the foundation pit support pile row 1 is repaired, and the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 are moved up and down to the appropriate position by controlling the external crane. The forward and reverse motors 902 are controlled to operate to drive the turntable 908 to rotate, so as to facilitate driving the cover plate 3 to the corresponding position of the appropriate crack. The dual-axis motor 203 is controlled to operate to drive the two groups of threaded columns 204 to rotate. With the cooperation of the two groups of threaded columns 204 and the two groups of threaded tubes 205, the cover plate 3 is driven to cover the position of the crack, and the anti-slip plate 5 is driven to be supported in the foundation pit support pile row 1 to seal. The ring 4 makes the cover plate 3 fit more closely with the foundation pit support pile row 1, and the cover plate 3 is installed on the side of the threaded tube 205 through the first fixing plate 7 and the bolt 8. The construction personnel can remove and replace the cover plate 3 with a suitable size according to the length of the crack, so as to facilitate the completion of local repair. The local repair only needs to use a small amount of repair material, which reduces the material cost. After waiting for the concrete slurry to solidify, the double-axis motor 203 and the electric push rod 11 are controlled to operate, and the cover plate 3, the anti-skid plate 5 and the limit plate 12 are controlled to separate from the foundation pit support pile row 1. Then, the camera mechanism 6 is used to observe the positions of other cracks in the foundation pit support pile row 1, and the crane is controlled to operate from bottom to top to drive the telescopic mechanism 2, the rotating mechanism 9 and the cover plate 3 to the appropriate position, and the above steps are repeated until all local cracks are repaired.

[0025] Although specific 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 specific 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. A foundation pit support and repair structure, comprising a foundation pit support pile row (1), a telescopic mechanism (2), a cover plate (3) and a rotating mechanism (9), characterized in that: The telescopic mechanism (2) is movably mounted inside the foundation pit support pile row (1); the cover plate (3) is arranged at the left end of the telescopic mechanism (2); the rotating mechanism (9) is arranged at the upper end of the telescopic mechanism (2); the telescopic mechanism (2) comprises a housing (201); a transmission compartment (202) is provided inside the housing (201); a dual-axis motor (203) is fixedly connected inside the transmission compartment (202); both ends of the output shaft of the dual-axis motor (203) are fixedly connected with threaded columns (204); two groups of the threaded columns (204) are threadedly connected with threaded tubes (205) at the ends away from one another; two groups of the threaded tubes (205) are fixedly connected with a first fixing plate (7) at the ends away from one another; bolts (8) are threadedly connected inside the first fixing plate (7); the cover plate (3) is mounted on the left side of the threaded tube (205) at the left end via the first fixing plate (7) and the bolts (8); the cover plate (3) is mounted on the left side of the threaded tube (205) at the left end via the first fixing plate (7) and the bolts (8); A sealing ring (4) is provided at the left end of the plate (3); an anti-slip plate (5) is installed on the right side of the threaded tube (205) at the right end through a first fixing plate (7) and a bolt (8); a slider (206) is fixedly connected to the side of the threaded tube (205); a slide groove (207) is provided inside the transmission bin (202); the slider (206) is slidably connected inside the slide groove (207); the rotating mechanism (9) comprises a fixed seat (901); a forward and reverse motor (902) is fixedly connected inside the fixed seat (901); a rotating shaft (903) is fixedly connected to the lower end of the output shaft of the forward and reverse motor (902); a bearing (904) is penetrated through the lower surface of the fixed seat (901); the rotating shaft (903) is penetrated inside the bearing (904); a rotating disk (908) is fixedly connected to the lower end of the rotating shaft (903); and the housing (201) is fixedly connected to the lower end of the rotating disk (908).

2. A foundation pit support and repair structure according to claim 1, characterized in that: A camera mechanism (6) is arranged at the lower end of the housing (201); there are two groups of the camera mechanisms (6) which are symmetrically arranged at the lower end of the housing (201); the camera mechanisms (6) have a viewing angle of 180 degrees; and the camera mechanisms (6) are connected to an external display.

3. A foundation pit support and repair structure according to claim 1, characterized in that: The lower surface of the fixed seat (901) is provided with a first slide rail (905), and the upper surface of the rotating disk (908) is provided with a second slide rail (906). Balls (907) are rollingly connected inside the first slide rail (905) and the second slide rail (906). There are a plurality of groups of balls (907) which are symmetrically arranged inside the first slide rail (905) and the second slide rail (906).

4. A foundation pit support and repair structure according to claim 1, characterized in that: The upper surface of the fixing seat (901) is fixedly connected to a second fixing plate (10); there are two groups of the second fixing plates (10) which are symmetrically arranged on the upper surface of the fixing seat (901); opposite sides of the two groups of the second fixing plates (10) are fixedly connected to electric push rods (11); and the ends away from one end of the two groups of the electric push rods (11) are fixedly connected to a limiting plate (12).

5. A foundation pit support and repair structure according to claim 1, characterized in that: The upper end of the cover plate (3) is connected to a grouting pipe (13).

6. A foundation pit support and repair structure according to claim 1, characterized in that: A traction rope (14) is provided at the upper end of the fixing seat (901), and the traction rope (14) cooperates with an external crane.

7. A foundation pit support and repair structure and a construction method thereof applied to claims 1-6, characterized in that: The following steps are involved: S1: first, excavate the soil inside the foundation pit support pile row (1), and clean the surface area where the cracks of the foundation pit support pile row (1) are located; S2: placing the telescopic mechanism (2), the rotating mechanism (9), the cover plate (3), etc. in the foundation pit support pile row (1), observing the location of the cracks in the foundation pit support pile row (1) by means of the camera mechanism (6), first repairing the cracks at the bottom of the foundation pit support pile row (1), and controlling the external crane to drive the telescopic mechanism (2), the rotating mechanism (9), the cover plate (3), etc. to move up and down to a suitable position; S3: by controlling the operation of the two sets of electric push rods (11), the two sets of limit plates (12) are driven to move in opposite directions, so that the limit plates (12) fit into the foundation pit support pile row (1) to fix the rotating mechanism (9); S4: By controlling the operation of the forward and reverse motors (902), the turntable (908) is driven to rotate, thereby driving the cover plate (3) to a position corresponding to the appropriate crack, and by controlling the operation of the dual-axis motor (203), the two sets of threaded columns (204) are driven to rotate. With the cooperation of the two sets of threaded columns (204) and the two sets of threaded tubes (205), the cover plate (3) is driven to cover the position of the crack, and the anti-slide plate (5) is driven to be supported in the foundation pit support pile row (1), and the sealing ring (4) makes the cover plate (3) and the foundation pit support pile row (1) fit more closely; S5: injecting concrete slurry into the grouting space formed by the inner wall of the cover plate (3) through the grouting pipe (13); S6: leaving the foundation pit support pile row (1) still and waiting for the concrete slurry to solidify, and then controlling the double-axis motor (203) and the electric push rod (11) to operate, so as to control the cover plate (3), the anti-slip plate (5) and the limit plate (12) to separate from the foundation pit support pile row (1); S7: Then, the positions of other cracks in the foundation pit support pile row (1) are observed through the camera mechanism (6), and the crane is controlled to operate from bottom to top to drive the telescopic mechanism (2), the rotating mechanism (9) and the cover plate (3) to the appropriate positions, and the above steps are repeated until all local cracks are completely removed; S8: The cover plate (3) is installed on the side of the threaded pipe (205) through the first fixing plate (7) and the bolts (8). The construction personnel can remove and replace the cover plate (3) with a suitable size according to the length of the crack.

Images