A self-cleaning anti-deviation prefabricated shaft for inspection well

Abstract

The application provides a prefabricated well shaft for a self-cleaning and deviation-preventing inspection well, which comprises a prefabricated well shaft, an electric cylinder, a filter frame, a threaded rod, a sliding scraper and a collecting cylinder; the bottom side of the filter frame is provided with a bottom horizontal plate, the inner side is inlaid with a filter screen, one end of the filter frame in a horizontal shape is provided with an inclined gap, the other end is fixed with a motor shell, a driving motor is installed in the motor shell, the upper side of the inclined gap is fixed with a U-shaped plate, one end of the threaded rod is connected with a motor shaft of the driving motor, the middle of the sliding scraper is provided with a threaded cylinder and is connected with the threaded rod through thread engagement; the electric cylinder is installed in the protection shell, and the telescopic end of the electric cylinder is connected with the middle of the bottom side of the bottom horizontal plate through the inner horizontal plate; the inner arc side of the upper end of the collecting cylinder is provided with a T-shaped insertion column, and the T-shaped insertion column is inserted into a T-shaped insertion slot on the outer side of the upper end of the prefabricated well shaft; the application can clean the impurities on the filter screen and avoid the deviation of the prefabricated well shaft.

Description

Technical Field

[0001] This invention relates to the field of municipal engineering technology, and in particular to a prefabricated manhole casing for a self-cleaning, anti-displacement inspection well. Background Technology

[0002] Inspection wells, as key nodes in urban underground pipe networks, directly affect road traffic safety, the normal operation of underground pipelines, and the protection of the surrounding environment. With the accelerated urbanization and booming development of transportation infrastructure in my country, backfilled earth subgrades have become a widely adopted subgrade form in road engineering. However, in actual use, precast manholes bear the important function of rainwater collection and drainage. Their built-in filter structures are prone to clogging due to the accumulation of impurities—mud, sand, debris, and other impurities carried by rainwater as it flows through the manhole continuously deposit on the filter screen, gradually reducing the effective water passage area, leading to poor drainage. This, in turn, affects the normal flow of rainwater along the precast manhole surface, and in severe cases, can even cause secondary problems such as water accumulation around the manhole and softening of the subgrade. Summary of the Invention

[0003] To address the problems in the background art, the present invention provides a self-cleaning, anti-deviation prefabricated well casing for inspection wells, which can clean impurities on the filter screen and push the impurities into a collection cylinder for collection, thereby preventing the prefabricated well casing from deviating.

[0004] A prefabricated well casing for a self-cleaning, anti-deviation inspection well includes a prefabricated well casing, an electric cylinder, a self-cleaning mechanism, and a protective shell; The prefabricated well shaft has six rows of external connecting blocks of different heights on its outer side, and a through hole in the middle of the external connecting blocks. An inner fixing ring is also fixed at the lower inner side of the prefabricated well shaft, and an inner horizontal plate is provided in the middle of the inner fixing ring. The electric cylinder is installed inside the protective shell, the top of the protective shell is fixed to the middle of the bottom side of the inner horizontal plate, and the telescopic end of the electric cylinder passes through the inner horizontal plate and is connected to the self-cleaning mechanism, providing power for the self-cleaning mechanism to clean itself. The self-cleaning mechanism is fixed to the precast well casing and is used to collect impurities inside the precast well casing and discharge them out of the precast well casing.

[0005] Furthermore, the self-cleaning mechanism includes a filter frame 3 and a collection cylinder 5. The filter frame 3 is located below the inner fixing ring 102 and is fixed inside the prefabricated well cylinder 1. The collection cylinder 5 is secured to the outside of the prefabricated well cylinder 1. The filter frame has a bottom horizontal plate on its bottom side, a filter screen inlaid on its inner side, and U-shaped notches on its outer ends. The middle end of the filter frame and the filter screen is a horizontal structure, and the two sides are inclined structures. The horizontal end of the filter frame has an inclined notch, and the other end is fixed with a motor housing. A drive motor is installed inside the motor housing. A U-shaped plate is fixed on the upper side of the inclined notch. One end of the threaded rod is connected to the motor shaft of the drive motor, and the other end is a smooth shaft structure that is rotatably inserted into the U-shaped plate. The sliding scraper has a threaded cylinder in the middle and is connected to the threaded rod through thread engagement. The upper end of the inner arc side of the collecting cylinder is provided with a T-shaped insert, which is inserted into the T-shaped slot at the upper end of the outer side of the precast well cylinder. The bottom end of the collecting cylinder is placed on the outer support plate fixed at the bottom end of the outer side of the precast well cylinder, and the precast insert on the outer support plate is inserted into the bottom insertion hole at the bottom of the collecting cylinder. The precast well cylinder is also provided with an impurity discharge outlet, and the collecting cylinder is provided with an impurity collection inlet, which is opposite to the impurity discharge outlet. A cover plate is also installed in the stepped circular groove at the top of the collecting cylinder.

[0006] Furthermore, two sets of limiting posts are fixed on the inner fixing ring. Guide rods are connected to the limiting posts, and the U-shaped notches at both ends of the filter frame are respectively inserted into the guide rods. The top side of the guide rod is also screwed with a limiting nut. When the top of the filter frame is attached to the limiting nut, the bottom side of the filter frame is flush with the upper side of the impurity discharge port. When the bottom side of the filter frame is attached downward to the limiting post, the inclined lower end of the oblique notch is flush with the lower side of the impurity discharge port.

[0007] Furthermore, two sets of springs are provided between the inner horizontal plate of the inner fixing ring and the bottom horizontal plate of the filter frame, and the upper and lower ends of the springs are respectively located within the circular frames of the bottom horizontal plate and the inner horizontal plate.

[0008] Furthermore, the U-shaped plate is provided with two sets of oblique insertion ports A, and the two sides of the threaded cylinder on the sliding scraper are respectively oblique insertion ports B. Triangular protective covers are inserted into oblique insertion ports A and B, and the inner side of one end of the triangular protective cover is also attached to the triangular support block of the motor housing.

[0009] Furthermore, the bottom end of the sliding scraper is attached to the horizontal structure between the filter frame and the filter screen, and the bottom sides of both ends are attached to the inclined structure of the filter frame and the filter screen, respectively, and are rotatably connected to movable scrapers. Two sets of side connecting plates are fixed on both sides of the sliding scraper, and tension springs are connected between the side connecting plates and the movable scraper.

[0010] Furthermore, the locking notch A on the top side of the prefabricated well barrel is opposite to the locking notch B on the top side of the collecting cylinder, and locking plates are inserted into them respectively. The stepped holes on the locking plates are inserted into the prefabricated rod in the locking notch A and the locking connecting rod in the locking notch B respectively, and are locked and fixed by screwing nuts onto the threads at the top of the prefabricated rod and the locking connecting rod.

[0011] Furthermore, both the electric cylinder and the drive motor are electrically connected to an external power source and are also connected to a remote control via infrared.

[0012] The present invention provides a prefabricated well shaft anti-displacement reinforcement structure for roadbed backfilling, which has the following beneficial effects: (1) The present invention can clean the impurities on the filter screen and push the impurities into the collection cylinder for collection, so as to clean them, and can also avoid the displacement of the prefabricated well cylinder.

[0013] (2) By setting up external connecting blocks of different heights, the precast well cylinder is inserted into the precast concrete cylinder. The through holes on the external connecting blocks are inserted into the precast steel bars on the concrete cylinder, and the nuts are screwed into the threaded structure at the top of the steel bars for locking. This can fix the precast well cylinder and effectively prevent the precast well cylinder from shifting.

[0014] (3) By setting up a filter frame and a filter screen, the present invention can filter rainwater entering the precast well. When impurities accumulate on the filter screen and affect filtration, the electric cylinder drives the filter frame and filter screen to move downwards until the bottom of the inclined notch is level with the bottom of the impurity discharge outlet. The drive motor drives the threaded rod to rotate, thereby driving the sliding scraper and the movable scraper to move on the filter screen. The inclined structure on both sides of the filter screen is used to clean the impurities on the filter screen to the inclined notch and discharge them along the inclined notch and the impurity discharge outlet. Moreover, by using the rotational connection between the movable scraper and the sliding scraper and the connection through the tension spring, the movable scraper can be rotated and adjusted when it touches the inner wall of the precast well. When the movable scraper leaves the inner wall of the precast well, the movable scraper can automatically keep straight with the sliding scraper.

[0015] (4) By setting up a collection cylinder, the present invention can make the impurities discharged from the impurity outlet enter the collection cylinder through the impurity collection inlet by inserting and fixing the collection cylinder on one side of the precast well cylinder, and by using the impurity collection inlet and the impurity discharge outlet to be opposite each other. Furthermore, the impurities in the collection cylinder can be cleaned by removing the cover plate.

[0016] Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 The present invention is shown Figure 1 Schematic diagram of the left-side side view structure; Figure 3 The present invention is shown Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 The present invention is shown Figure 1 Schematic diagram of the mid-lateral elevation structure; Figure 5 The present invention is shown Figure 2Mid-top view of the structure; Figure 6 The present invention is shown Figure 1 A schematic diagram showing the structure when the middle cover plate and the locking plate are removed upwards; Figure 7 The present invention is shown Figure 6 A schematic diagram of the structure when the middle collection cylinder is removed upwards; Figure 8 A schematic diagram of the collection tube in this invention is shown; Figure 9 This invention shows a schematic diagram of the structure after the electric cylinder drives the filter frame to move downwards until the bottom end of the oblique notch is level with the bottom end of the impurity discharge outlet, and the sliding scraper moves to the middle and one end of the prefabricated well is vertically cut. Figure 10 The present invention is shown Figure 9 A schematic diagram of the structure from the right side view; Figure 11 The present invention is shown Figure 10 A schematic diagram of the structure when the sliding scraper moves to one side of the oblique notch; Figure 12 The present invention is shown Figure 11 A schematic diagram of the mid-lateral elevation structure; Figure 13 This invention shows a schematic diagram of the overall structure of the filter frame component. Figure 14 The present invention is shown Figure 13 Schematic diagram of the mid-rear side view structure.

[0017] List of reference numerals 1. Precast wellbore; 101. External connecting block; 102. Inner fixing ring; 1021. Inner horizontal plate; 1022. Limiting post; 1023. Guide rod; 103. Impurity discharge port; 104. T-slot; 105. Locking notch A; 1051. Precast rod; 106. Spring; 107. Outer support plate; 1071. Precast insert post; 2. Electric cylinder; 201. Protective shell; 3. Filter frame; 301. Bottom horizontal plate; 302. Filter screen; 303. U-shaped notch; 304. Angled notch; 305. U-shaped plate; 3051. Angled insertion port A; 306. Motor housing; 3061. Triangular support block; 307. Threaded rod; 308. Sliding scraper; 3081. Angled insertion port B; 3082. Side connecting plate; 3083. Movable scraper; 3084. Tension spring; 4. Triangular protective cover; 5. Collection cylinder; 501. T-shaped insertion post; 502. Impurity collection inlet; 503. Locking notch B; 5031. Locking connecting rod; 504. Bottom insertion hole; 505. Cover plate; 6. Locking plate. Detailed Implementation

[0018] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0019] Example 1: Please refer to Figures 1 to 14 : This invention proposes a prefabricated manhole anti-deviation reinforcement structure for roadbed backfilling, comprising: a prefabricated manhole 1, an electric cylinder 2, a filter frame 3, a threaded rod 307, a sliding scraper 308, and a collection cylinder 5; The outer side of the precast shaft 1 is provided with six rows of external connecting blocks 101 of different heights. The middle of the external connecting block 101 is provided with a through hole. The lower inner side of the precast shaft 1 is also fixed with an inner fixing ring 102. The middle of the inner fixing ring 102 is provided with an inner horizontal plate 1021. The bottom side of the filter frame 3 is provided with a bottom horizontal plate 301, the inner side is inlaid with a filter screen 302, and the outer two ends are respectively provided with U-shaped notches 303. The middle end of the filter frame 3 and the filter screen 302 is a horizontal structure, and the two sides are inclined structures. The horizontal end of the filter frame 3 is provided with an inclined notch 304, and the other end is fixed with a motor housing 306. The motor housing 306 is installed with a drive motor. The upper side of the inclined notch 304 is fixed with a U-shaped plate 305. One end of the threaded rod 307 is connected to the motor shaft of the drive motor, and the other end is a smooth shaft structure and is rotatably inserted into the U-shaped plate 305. The middle of the sliding scraper 308 is provided with a threaded cylinder and is connected to the threaded rod 307 through thread engagement. The electric cylinder 2 is installed inside the protective shell 201. The top of the protective shell 201 is fixed to the middle of the bottom side of the inner horizontal plate 1021, and the telescopic end of the electric cylinder 2 passes through the inner horizontal plate 1021 and is connected to the middle of the bottom side of the bottom horizontal plate 301. The upper end of the inner arc side of the collecting cylinder 5 is provided with a T-shaped insert 501, and the T-shaped insert 501 is inserted into the T-shaped slot 104 at the upper end of the outer side of the precast well cylinder 1. The bottom end of the collecting cylinder 5 is placed on the outer support plate 107 fixed at the bottom end of the outer side of the precast well cylinder 1, and the precast insert 1071 on the outer support plate 107 is inserted into the bottom insertion hole 504 at the bottom of the collecting cylinder 5. The precast well cylinder 1 is also provided with an impurity discharge outlet 103, and the collecting cylinder 5 is provided with an impurity collection inlet 502, and the impurity collection inlet 502 is opposite to the impurity discharge outlet 103. A cover plate 505 is also installed in the stepped circular groove at the top of the collecting cylinder 5.

[0020] In embodiments of the present invention, such as Figures 9 to 12As shown, two sets of limiting posts 1022 are also fixed on the inner fixing ring 102. Guide rods 1023 are connected to the limiting posts 1022. The U-shaped notches 303 at both ends of the filter frame 3 are respectively inserted into the guide rods 1023. The top side of the guide rods 1023 is also screwed with a limiting nut. When the top of the filter frame 3 is attached to the limiting nut, the bottom side of the filter frame 3 is flush with the upper side of the impurity discharge port 103. When the bottom side of the filter frame 3 is attached downward to the limiting post 1022, the inclined lower end of the oblique notch 304 is flush with the lower side of the impurity discharge port 103. When the filter frame 3 moves up and down, the position of the filter frame 3 can be restricted.

[0021] In embodiments of the present invention, such as Figure 4 , Figures 10 to 12 As shown, two sets of springs 106 are provided between the inner horizontal plate 1021 of the inner fixing ring 102 and the bottom horizontal plate 301 of the filter frame 3, and the upper and lower ends of the springs 106 are respectively located in the circular frames of the bottom horizontal plate 301 and the inner horizontal plate 1021.

[0022] In embodiments of the present invention, such as Figure 9 , Figure 10 and Figure 14 As shown, the U-shaped plate 305 is provided with two sets of oblique insertion ports A3051, and the threaded cylinder on the sliding scraper 308 has oblique insertion ports B3081 on both sides. Triangular guards 4 are inserted into the oblique insertion ports A3051 and B3081, and the inner side of one end of the triangular guard 4 is also attached to the triangular support block 3061 of the motor housing 306, which facilitates the disassembly and installation of the triangular guard 4. The triangular guard 4 can protect the threaded rod 307 and prevent impurities from falling into the threaded rod 307 and affecting its meshing with the threaded cylinder on the sliding scraper 308.

[0023] In embodiments of the present invention, such as Figure 3 and Figure 5 as well as Figure 13 and Figure 14 As shown, the bottom of the sliding scraper 308 is attached to the horizontal structure between the filter frame 3 and the filter screen 302. The bottom sides of both ends are attached to the inclined structures of the filter frame 3 and the filter screen 302, respectively, and are rotatably connected to the movable scraper 3083. Two sets of side connecting plates 3082 are fixed on both sides of the sliding scraper 308, and tension springs 3084 are connected between the side connecting plates 3082 and the movable scraper 3083. When the sliding scraper 308 slides to clean the impurities on the filter screen 302, it can also drive the movable scraper 3083 to clean one side of the inclined structure of the filter screen 302. When the movable scraper 3083 touches the inner wall of the precast well cylinder 1, it can rotate and adjust. When the movable scraper 3083 leaves the inner wall of the precast well cylinder 1, the movable scraper 3083 can automatically keep straight with the sliding scraper 308.

[0024] In embodiments of the present invention, such as Figure 6 and Figure 7 As shown, the locking notch A105 on the top side of the precast well barrel 1 is opposite to the locking notch B503 on the top side of the collection cylinder 5, and locking plates 6 are inserted into them respectively. The stepped holes on the locking plates 6 are inserted into the precast rod 1051 in the locking notch A105 and the locking connecting rod 5031 in the locking notch B503 respectively, and are locked and fixed by screwing nuts onto the threads at the top of the precast rod 1051 and the locking connecting rod 5031, so as to fix the collection cylinder 5 to one side of the precast well barrel 1.

[0025] In this embodiment of the invention, both the electric cylinder 2 and the drive motor are electrically connected to an external power source and are connected to a remote control via infrared. The electric cylinder 2 and the drive motor can be remotely controlled via the remote control.

[0026] The specific usage and function of this embodiment are as follows: In this invention, a prefabricated manhole 1 is inserted into a prefabricated concrete cylinder, and a prefabricated steel bar column on the concrete cylinder is inserted through the through hole 101 on the outer connecting block. The nut is then tightened into the threaded structure at the top of the steel bar column to secure it. The roadbed is then backfilled, and the manhole cover is placed on top of the prefabricated manhole 1. The filter screen 302 is used to filter the rainwater entering the precast well cylinder 1. When impurities accumulate on the filter screen 302 and affect filtration, the electric cylinder 2 is controlled by the remote control to move the filter frame 3 and the filter screen 302 downwards until the bottom end of the inclined notch 304 is level with the bottom end of the impurity discharge outlet 103. The drive motor is also controlled to drive the threaded rod 307 to rotate, which in turn drives the sliding scraper 308 and the movable scraper 3083 to move on the filter screen 302. The inclined structure on both sides of the filter screen 302 is used to clean the impurities on the filter screen 302 to the inclined notch 304 and discharge them through the inclined notch 304 and the impurity discharge outlet 103. The impurity collection inlet 502 is aligned with the impurity discharge outlet 103, so that the impurities discharged from the impurity outlet 103 enter the collection cylinder 5 through the impurity collection inlet 502. The impurities in the collection cylinder 5 are also cleaned by removing the cover plate 505.

[0027] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0028] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0029] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A prefabricated well casing for a self-cleaning, anti-deviation inspection well, characterized in that, Includes a prefabricated well casing (1), an electric cylinder (2), a self-cleaning mechanism, and a protective shell (201). The prefabricated well shaft (1) has six rows of external connecting blocks (101) of different heights on its outer side. The middle of the external connecting block (101) has a through hole. The lower inner side of the prefabricated well shaft (1) is also fixed with an inner fixing ring (102). The middle of the inner fixing ring (102) has an inner horizontal plate (1021). The electric cylinder (2) is installed inside the protective shell (201). The top of the protective shell (201) is fixed to the middle of the bottom side of the inner horizontal plate (1021), and the telescopic end of the electric cylinder (2) passes through the inner horizontal plate (1021) and is connected to the self-cleaning mechanism, and provides the self-cleaning power of the self-cleaning mechanism. The self-cleaning mechanism is fixed to the prefabricated well casing (1) and is used to collect impurities inside the prefabricated well casing (1) and discharge them out of the prefabricated well casing (1).

2. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 1, characterized in that, The self-cleaning mechanism includes a filter frame (3) and a collection cylinder (5). The filter frame (3) is located under the inner fixing ring (102) and fixed inside the prefabricated well cylinder (1). The collection cylinder (5) is secured to the outside of the prefabricated well cylinder (1). The bottom side of the filter frame (3) is provided with a bottom horizontal plate (301), the inner side is inlaid with a filter screen (302), and the outer two ends are respectively provided with U-shaped notches (303). The middle end of the filter frame (3) and the filter screen (302) is a horizontal structure, and the two sides are inclined structures. The horizontal end of the filter frame (3) is provided with an inclined notch (304), and the other end is fixed with a motor housing (306). The motor housing (306) is installed with a drive motor. The upper side of the inclined notch (304) is fixed with a U-shaped plate (305). One end of the threaded rod (307) is connected to the motor shaft of the drive motor, and the other end is a light shaft structure and is rotatably inserted on the U-shaped plate (305). The middle of the sliding scraper (308) is provided with a threaded cylinder and is connected to the threaded rod (307) by thread engagement. The upper end of the inner arc side of the collecting cylinder (5) is provided with a T-shaped insert (501), and the T-shaped insert (501) is inserted into the T-shaped slot (104) at the upper end of the outer side of the prefabricated well cylinder (1). The bottom end of the collecting cylinder (5) is placed on the outer support plate (107) fixed at the bottom end of the outer side of the prefabricated well cylinder (1), and the prefabricated insert (1071) on the outer support plate (107) is inserted into the bottom insertion hole (504) at the bottom of the collecting cylinder (5). The prefabricated well cylinder (1) is also provided with an impurity discharge outlet (103), and the collecting cylinder (5) is provided with an impurity collection inlet (502), and the impurity collection inlet (502) is opposite to the impurity discharge outlet (103). A cover plate (505) is also installed in the stepped circular groove at the top of the collecting cylinder (5).

3. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 2, characterized in that, Two sets of limiting posts (1022) are also fixed on the inner fixing ring (102). A guide rod (1023) is connected to the limiting post (1022). The U-shaped notches (303) at both ends of the filter frame (3) are respectively inserted into the guide rod (1023). The top side of the guide rod (1023) is also screwed with a limiting nut. When the top of the filter frame (3) is attached to the limiting nut, the bottom side of the filter frame (3) is level with the upper side of the impurity discharge port (103). When the bottom side of the filter frame (3) is attached downward to the limiting post (1022), the inclined lower end of the oblique notch (304) is level with the lower side of the impurity discharge port (103).

4. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 3, characterized in that, Two sets of springs (106) are provided between the inner horizontal plate (1021) of the inner fixing ring (102) and the bottom horizontal plate (301) of the filter frame (3), and the upper and lower ends of the springs (106) are respectively located in the circular frame of the bottom horizontal plate (301) and the inner horizontal plate (1021).

5. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 2, characterized in that, The U-shaped plate (305) is provided with two sets of oblique insertion ports A (3051), and the two sides of the threaded cylinder on the sliding scraper (308) are respectively oblique insertion ports B (3081). Triangular guards (4) are inserted into oblique insertion ports A (3051) and oblique insertion ports B (3081), and the inner side of one end of the triangular guard (4) is also attached to the triangular support block (3061) of the motor housing (306).

6. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 2, characterized in that, The bottom of the sliding scraper (308) is attached to the horizontal structure between the filter frame (3) and the filter screen (302). The bottom sides of both ends are attached to the inclined structure of the filter frame (3) and the filter screen (302), and are respectively rotatably connected to the movable scraper (3083). Two sets of side connecting plates (3082) are fixed on both sides of the sliding scraper (308), and tension springs (3084) are respectively connected between the side connecting plates (3082) and the movable scraper (3083).

7. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 2, characterized in that, The locking notch A (105) on the top side of the prefabricated well barrel (1) is opposite to the locking notch B (503) on the top side of the collecting cylinder (5), and locking plates (6) are inserted therein. The stepped holes on the locking plates (6) are inserted into the prefabricated rod (1051) in the locking notch A (105) and the locking connecting rod (5031) in the locking notch B (503), and are locked and fixed by screwing nuts onto the threads at the top of the prefabricated rod (1051) and the locking connecting rod (5031).

8. The prefabricated well casing for self-cleaning, anti-deviation inspection wells according to claim 1, characterized in that, The electric cylinder (2) and the drive motor are both electrically connected to an external power source and are respectively connected to a remote controller via infrared.

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