A sewage inspection well auxiliary installation device and construction method

Abstract

The present application relates to the technical field of inspection well construction. In view of the difficulty in assembling the well body during the construction of traditional sewage inspection wells, an auxiliary installation device and construction method for sewage inspection wells are proposed, including a support column, on which a connecting assembly and a positioning assembly are arranged; the connecting assembly is located at the bottom of the support column, and the connecting assembly includes a plurality of connecting oil cylinders vertically arranged on the outer periphery of the support column, and the plurality of connecting oil cylinders are evenly distributed axially around the support column, and the ends of the piston rods of the connecting oil cylinders are all provided with connecting parts; the positioning assembly is located at the top of the support column, and the positioning assembly includes a plurality of positioning oil cylinders vertically arranged on the outer periphery of the support column, and the plurality of positioning oil cylinders are evenly distributed axially around the support column, and the ends of the piston rods of the positioning oil cylinders are all connected with positioning parts. The present application has the effect of facilitating the assembly of the sewage inspection well body.

Description

Technical Field

[0001] The present application relates to the field of inspection well construction, and in particular to a sewage inspection well installation and construction method. Background Art

[0002] Sewage inspection wells are a crucial component of the sewage network. Connected to the sewage pipeline, they are primarily used for routine inspection and dredging. Currently, sewage inspection well structures are typically prefabricated in the factory and then transported to the site for installation. This significantly reduces the overall construction time compared to traditional on-site construction.

[0003] In related technologies, such as Figure 1 Because the body of some sewage inspection wells 1 is large in size, in order to facilitate transportation and subsequent lifting, the sewage inspection well 1 is usually divided into an upper well shaft 12 and a lower well shaft 11 and prefabricated separately. When the sewage inspection well 1 is subsequently constructed, the upper well shaft 12 and the lower well shaft 11 are assembled to form an integral structure.

[0004] Regarding the above-mentioned related technologies, in the actual process of assembling the sewage inspection well body, when the upper well shaft is hoisted and installed on the lower well shaft, the upper well shaft is prone to shaking due to external loads such as wind loads. It is necessary to cooperate with manual reciprocating adjustment of the upper well shaft position so that the upper well shaft can be accurately positioned on the lower well shaft. The sewage inspection well is difficult to assemble and the construction efficiency is low. At the same time, there are certain safety hazards when adjusting the position of the upper well shaft with manual assistance. Therefore, there is room for improvement. Summary of the Invention

[0005] In order to reduce the difficulty of assembling the sewage inspection well body, the present application provides a sewage inspection well installation and construction method.

[0006] This application provides a sewage inspection well auxiliary installation device and construction method, which adopts the following technical solutions:

[0007] A sewage inspection well auxiliary installation device comprises a support column, wherein the support column is provided with a connecting component and a positioning component;

[0008] The connecting assembly is located at the bottom of the support column, and the connecting assembly includes a plurality of connecting oil cylinders vertically arranged on the outer periphery of the support column, and the plurality of connecting oil cylinders are evenly distributed axially around the support column, and the ends of the piston rods of the connecting oil cylinders are all provided with connecting parts;

[0009] The positioning assembly is located at the top of the support column. The positioning assembly includes a plurality of positioning cylinders vertically arranged on the periphery of the support column. The plurality of positioning cylinders are evenly distributed axially around the support column. The ends of the positioning cylinder piston rods are all connected with positioning parts.

[0010] By adopting the above technical solution, after the lower shaft of the sewage inspection well is hoisted, the support column is placed into the lower shaft, and the corresponding connecting parts are driven by the several connecting cylinders at the bottom end of the support column to abut against the inner circumference of the lower shaft, so that the support column is coaxially supported in the lower shaft. When the upper shaft is subsequently hoisted, the upper shaft is first hoisted above the lower shaft, and the several positioning cylinders are located in the upper shaft. Then, the corresponding positioning parts are driven by the several positioning cylinders to abut against the inner circumference of the upper shaft, so that the upper shaft and the lower shaft are axially aligned, and finally the upper shaft is continued to be hoisted onto the lower shaft. Compared with the traditional assembly method of the sewage inspection well body, on the one hand, it is convenient to realize the rapid positioning of the upper shaft, and on the other hand, it limits the shaking of the upper shaft due to external loads during the hoisting process, so that the upper shaft can be quickly and accurately positioned on the lower shaft, which is conducive to reducing the construction difficulty of the sewage inspection well.

[0011] Preferably, the positioning portion includes a positioning seat connected to the end of the positioning cylinder piston rod, the positioning seat is horizontally rotatably connected to a positioning wheel, and the axial direction of the positioning wheel is perpendicular to the axial direction of the support column.

[0012] By adopting the above technical solution, through the setting of the positioning wheel, after the upper wellbore is hoisted above the lower wellbore, the corresponding positioning wheel is driven by the positioning cylinder to abut against the inner periphery of the upper wellbore to position the upper wellbore; when the upper wellbore is subsequently hoisted downward, the positioning wheel can rotate as the upper wellbore is lowered, which is beneficial to reduce the friction between the upper wellbore and the positioning part, thereby facilitating the upper wellbore to land smoothly and steadily on the top of the lower wellbore.

[0013] Preferably, a positioning rotary driving member is further provided on the positioning seat, and the positioning rotary driving member is drivingly connected to the positioning wheel for driving the positioning wheel to rotate.

[0014] By adopting the above technical solution, on the one hand, when the upper well shaft that has been positioned is subsequently hoisted downward, the positioning wheel is driven to rotate by the positioning rotary drive component to assist the crane in hoisting the upper well shaft while controlling the hoisting speed of the upper well shaft. On the other hand, after the upper well shaft and the lower well shaft are subsequently assembled, when the auxiliary installation device is removed, the positioning wheel can be driven to rotate by the positioning rotary drive component to assist in moving the support column out of the sewage inspection well, thereby facilitating the removal of the auxiliary installation device.

[0015] Preferably, the positioning assembly further comprises a positioning support ring coaxially sleeved on the support column, the positioning cylinders are all connected to the positioning support ring, and the support column is further provided with a lifting drive member for driving the positioning support ring to rise and fall along the support column.

[0016] By adopting the above technical solution, the height of the positioning component can be adjusted, which makes it convenient to adjust the height position of the positioning component according to sewage inspection wells of different height specifications, so that the positioning component can better position the upper wellbore of the sewage inspection well.

[0017] A sewage inspection well construction method, using the sewage inspection well auxiliary installation device, comprises the following steps:

[0018] S1: Well structure in place: move the upper well shaft and the lower well shaft to the sewage inspection well assembly location;

[0019] S2: Installation of the lower shaft: Use a crane to lower the lower shaft onto the concrete base;

[0020] S3: Auxiliary installation device support: Place the support column into the lower wellbore, and drive the corresponding connecting parts of the connecting cylinders to abut against the inner circumference of the lower wellbore to coaxially support the support column in the lower wellbore;

[0021] S4: Positioning the upper wellbore: The upper wellbore is hoisted above the lower wellbore; the positioning assembly is positioned on the inner periphery of the upper wellbore; and the corresponding positioning parts are driven by a plurality of positioning cylinders to abut against the inner periphery of the upper wellbore, so that the upper wellbore and the lower wellbore are axially aligned;

[0022] S5: Lowering the upper shaft: Continue to lower the upper shaft until the bottom end surface of the upper shaft abuts against the top end surface of the lower shaft;

[0023] S6: Removal of auxiliary installation devices: Remove the support column from the sewage inspection well.

[0024] By adopting the above technical solution, after the support column is coaxially supported in the lower wellbore in advance through the connecting assembly, when the upper wellbore is hoisted above the lower wellbore, the positioning cylinders of the positioning assembly drive their respective positioning parts to abut against the inner circumference of the upper wellbore, so that the axial direction of the upper wellbore and the axial direction of the lower wellbore are kept coincident, thereby realizing rapid positioning of the upper wellbore. At the same time, during the process of hoisting the upper wellbore downward, the shaking of the upper wellbore due to external load is restricted, so that the upper wellbore is accurately positioned at the top of the lower wellbore, which is conducive to reducing the difficulty of assembling the sewage inspection well.

[0025] Preferably, an upper annular groove and a lower annular groove are respectively formed at the adjacent ends of the upper wellbore and the lower wellbore; an annular airbag is also embedded in the lower annular groove, and the annular airbag extends out of the top notch of the lower annular groove, and the annular airbag is connected with an air tube;

[0026] In step S2, after the lower wellbore is lowered into place, gas is injected into the annular airbag through the air pipe to expand the annular airbag;

[0027] In step S5, while the upper wellbore is hoisted to the top of the lower wellbore, the upper portion of the annular airbag is embedded into the upper annular groove at the bottom end of the upper wellbore.

[0028] By adopting the above technical solution, the annular airbag is inflated to expand the annular airbag, and then during the process of hoisting the upper wellbore to the lower wellbore, the annular airbag is embedded in the upper annular groove at the bottom end of the upper wellbore. The cooperation between the annular airbag and the upper annular groove can reduce the impact on the lower wellbore during the hoisting of the upper wellbore, which is conducive to making the upper wellbore land on the lower wellbore more stably.

[0029] Preferably, in step S5, after the upper portion of the annular airbag is embedded in the upper annular groove of the upper shaft, the gas in the annular airbag is first released through the air pipe, and then concrete is injected into the annular airbag through the air pipe.

[0030] By adopting the above technical solution, concrete is injected into the annular airbag, and an annular concrete component is formed after the concrete solidifies. On the one hand, the annular concrete component can be used to connect and limit the upper wellbore and the lower wellbore, which is beneficial to improving the connection integrity between the upper wellbore and the lower wellbore. On the other hand, the annular concrete component can seal the adjacent ends of the upper wellbore and the lower wellbore, which is beneficial to improving the sealing of the connection between the upper wellbore and the lower wellbore.

[0031] Preferably, in step S4, before hoisting the upper shaft, waterproof mortar is applied to the top end face of the lower shaft.

[0032] By adopting the above technical solution, after the upper wellbore is hoisted into position, the sealing and connection strength of the connection between the upper wellbore and the lower wellbore can be improved by using the waterproof mortar at the connection between the lower wellbore and the upper wellbore.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. Before hoisting the upper wellbore, the support column of the auxiliary installation device is coaxially supported in the lower wellbore; when the upper wellbore is subsequently hoisted above the lower wellbore, the corresponding positioning parts are driven by the positioning cylinders at the top of the support columns to abut against the inner circumference of the upper wellbore, so that the upper wellbore and the lower wellbore are axially aligned, and then the upper wellbore is continued to be hoisted until it is completely positioned. While using the auxiliary installation device to achieve rapid positioning of the upper wellbore, it limits the shaking of the upper wellbore due to external loads during the hoisting process, so that the upper wellbore can be quickly and accurately positioned on the lower wellbore.

[0035] 2. Through the setting of the positioning wheel and the positioning rotary drive component of the positioning part, when the subsequent crane lowers the positioned upper shaft, the positioning wheel is driven to rotate by the positioning rotary drive component to assist the crane in lowering the upper shaft. At the same time, the lifting speed of the upper shaft can be controlled. At the same time, when the auxiliary installation device is subsequently removed from the sewage inspection well, the positioning wheel can be driven to rotate by the positioning rotary drive component to bring the auxiliary support column out of the sewage inspection well.

[0036] 3. An upper annular groove and a lower annular groove are respectively formed on the adjacent sides of the upper wellbore and the lower wellbore. An annular airbag is also embedded in the lower annular groove and the annular airbag is connected to an air pipe. When the upper wellbore is subsequently hoisted onto the lower wellbore, the annular airbag is inflated and embedded into the upper annular groove of the upper wellbore. The cooperation between the annular airbag and the upper annular groove can achieve buffering of the upper wellbore and assist in guiding the upper wellbore, so that the upper wellbore can be positioned on the lower wellbore more smoothly and accurately.

[0037] 4. After the upper wellbore is placed on the lower wellbore, concrete is injected into the annular airbag. After the concrete solidifies, an annular concrete component is formed. The formed annular concrete component is used to improve the connection integrity and sealing of the upper wellbore and the lower wellbore. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a structural diagram used in this application to illustrate a sewage inspection well.

[0039] Figure 2 This is a structural diagram used in this application to illustrate the auxiliary installation device and the sewage inspection well.

[0040] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0041] Figure 4 yes Figure 2 Enlarged schematic diagram of part B in the middle.

[0042] Figure 5 yes Figure 2 Enlarged schematic diagram of part C in the middle.

[0043] Figure 6 This is a structural diagram used in this application to illustrate the installation of the auxiliary installation device into the lower wellbore.

[0044] Description of reference numerals:

[0045] 1. Sewage inspection well; 11. Lower shaft; 111. Lower annular groove; 12. Upper shaft; 121. Upper annular groove; 2. Support column; 21. Support plate; 22. Connecting cylinder; 23. Connecting part; 231. Connecting seat; 232. Connecting wheel; 233. Connecting rotary drive member; 24. Positioning support ring; 241. Lifting cylinder; 25. Positioning cylinder; 26. Positioning part; 261. Positioning seat; 262. Positioning wheel; 263. Positioning rotary drive member; 3. Annular airbag; 31. Trachea. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-6 This application is described in further detail.

[0047] In this embodiment, referring to Figure 1 The sewage inspection well 1 includes an upper wellbore 12 and a lower wellbore 11.

[0048] The embodiments of the present application disclose a sewage inspection well auxiliary installation device and a construction method.

[0049] A sewage inspection well auxiliary installation device, referring to Figure 2 and Figure 3 The support column 2 includes a connecting assembly and a positioning assembly provided at the bottom and top of the support column 2, respectively. The connecting assembly includes four connecting cylinders 22 vertically arranged on the outer periphery of the support column 2, and the four connecting cylinders 22 are evenly distributed around the axial direction of the support column 2; the ends of the piston rods of the connecting cylinders 22 are connected to connecting portions 23. The positioning assembly includes four positioning cylinders 25 vertically arranged on the outer periphery of the support column 2, and the four positioning cylinders 25 are evenly distributed around the axial direction of the support column 2; the ends of the piston rods of the positioning cylinders 25 are connected to positioning portions 26.

[0050] In this embodiment, the support column 2 is a steel pipe. A support plate 21 is vertically welded to the bottom end of the support column 2. Four connecting cylinders 22 are connected to the support plate 21. The connecting portion 23 includes a connecting seat 231 connected to the piston rod end of the connecting cylinder 22. The connecting seat 231 is horizontally rotatably connected to a connecting wheel 232. The connecting wheel 232 is axially arranged perpendicular to the axis of the support column 2. The connecting seat 231 is also provided with a connecting rotary drive 233 for driving the connecting wheel 232. Specifically, the connecting rotary drive 233 is a reduction motor.

[0051] Reference Figure 2 and Figure 4 The positioning assembly includes a positioning support ring 24 coaxially sleeved on the support ring, and four positioning cylinders 25 are mounted on the positioning support ring 24. The positioning portion 26 includes a positioning seat 261 connected to the end of the piston rod of the positioning cylinder 25. A positioning wheel 262 is horizontally rotatably connected to the positioning seat 261. The rotation axis of the positioning wheel 262 is perpendicular to the axis of the support column 2. The positioning seat 261 is also provided with a positioning rotary drive member 263 for driving the positioning wheel 262 to rotate. Specifically, the positioning rotary drive member 263 is a reduction motor.

[0052] When assembling the sewage inspection well 1 subsequently, after the lower wellbore 11 of the sewage inspection well 1 is hoisted into place, the support column 2 is placed into the lower wellbore 11; by driving the connecting cylinders 22 at various locations to drive the connecting wheels 232 on the corresponding connecting seats 231 to abut against the inner circumference of the lower wellbore 11, the support column 2 is coaxially supported in the lower wellbore 11. When assembling the upper wellbore 12 subsequently, the upper wellbore 12 is first hoisted to the top of the lower wellbore 11 by a crane, and the positioning assembly is located at the inner circumference of the upper wellbore 12; then, the positioning wheels 262 on the positioning seats 261 of the positioning cylinders 25 at various locations of the positioning assembly abut against the inner circumference of the upper wellbore 12, so that the upper wellbore 12 and the lower wellbore 11 are axially overlapped, and then the upper wellbore 12 is continued to be hoisted, so that the upper wellbore 12 can be quickly and accurately hoisted on the lower wellbore 11.

[0053] By setting the positioning wheel 262 and the positioning rotary drive member 263 on the positioning seat 261, when the upper wellbore 12 that has been positioned is subsequently lowered, the positioning wheel 262 can be driven by the positioning rotary drive member 263 to rotate accordingly, which is beneficial to reducing the friction between the positioning part 26 and the upper wellbore 12. At the same time, the positioning wheel 262 can be used to drive the crane to lower the upper wellbore 12 to control the lowering speed of the upper wellbore 12.

[0054] Reference Figure 3 and Figure 4 When the auxiliary installation device is subsequently removed from the sewage inspection well 1, the connecting rotary drive member 233 and the positioning rotary drive member 263 can be used to drive the connecting wheel 232 and the positioning wheel 262 to rotate respectively, so as to assist in moving the support column 2 out of the sewage inspection well 1.

[0055] The outer periphery of the connecting wheel 232 and the positioning wheel 262 are wrapped with rubber leather covers, which helps to reduce damage to the inner walls of the lower wellbore 11 and the upper wellbore 12 when the connecting wheel 232 is subsequently abutted against the inner periphery of the lower wellbore 11 and the positioning wheel 262 is subsequently abutted against the inner periphery of the upper wellbore 12.

[0056] Reference Figure 2 and Figure 4 The positioning support ring 24 is coaxially sleeved onto the support column 2. The support column 2 is also equipped with a lifting drive for driving the positioning support ring 24 up and down along the support column 2. The lifting drive includes four vertically arranged lifting cylinders 241, which are evenly distributed axially around the support tube. The bottom ends of the lifting cylinders 241 are connected to the support plate 21, and the top ends of the piston rods of the lifting cylinders 241 are connected to the bottom of the positioning support ring 24.

[0057] Through the above settings, the lifting cylinder 241 can subsequently drive its own piston rod to extend and retract, thereby driving the positioning support ring 24 and the four positioning cylinders 25 on the positioning support ring 24 to rise and fall along the support column 2, so that the height position of the positioning cylinder 25 can be adjusted, which is convenient for subsequent adjustment of the height position of the positioning component according to actual needs, and is conducive to improving the application range of the auxiliary installation device.

[0058] A sewage inspection well construction method, using the sewage inspection well auxiliary installation device, comprises the following steps:

[0059] S1: The well structure is in place: the upper well shaft 12 and the lower well shaft 11 are moved to the assembly position of the sewage inspection well 1.

[0060] Reference Figure 5 and Figure 6 A lower annular groove 111 and an upper annular groove 121 are respectively provided on the top end face of the lower wellbore 11 and the bottom end face of the upper wellbore 12; an annular airbag 3 is embedded in the lower annular groove 111, and the annular airbag 3 is connected to the air pipe 31, and the end of the air pipe 31 away from the annular airbag 3 is passed through the outer periphery of the lower wellbore 11.

[0061] S2: Install the shaft 11. The specific steps are as follows:

[0062] S2.1: Use a crane to lower the shaft 11 to the concrete base;

[0063] S2.2: Inflate the annular airbag 3; inflate the annular airbag 3 through the trachea 31 to expand the annular airbag 3.

[0064] S3: Auxiliary installation device support, refer to Figures 2 to 6 , the specific steps are as follows:

[0065] S3.1: Place the support column 2 into the lower wellbore 11;

[0066] S3.2: The connecting cylinders 22 at various locations on the bottom of the support column 2 drive the connecting wheels 232 on the corresponding connecting seats 231 to abut against the inner circumference of the lower shaft 11, so as to coaxially support the support column 2 in the lower shaft 11.

[0067] S4: Positioning the upper shaft 12: The specific steps are as follows:

[0068] S4.1: Apply waterproof mortar to the top end face of the lower shaft 11;

[0069] S4.2: Use a crane to hoist the upper shaft 12 above the lower shaft 11, and ensure that the positioning assembly at the top of the support column 2 is located on the inner periphery of the upper shaft 12;

[0070] S4.3: The four positioning cylinders 25 on the positioning support ring 24 drive the positioning wheels 262 on the corresponding positioning seats 261 to abut against the inner circumference of the upper wellbore 12, so that the upper wellbore 12 and the lower wellbore 11 are axially aligned.

[0071] S5: The upper shaft 12 is placed in position: the specific steps are as follows:

[0072] S5.1: The crane continues to lower the upper shaft 12. Simultaneously, the positioning rotary drive member 263 drives the positioning wheel 262 to rotate, assisting the crane in lowering the upper shaft 12 until the bottom end surface of the upper shaft 12 abuts against the top end surface of the lower shaft 11, and the upper portion of the annular airbag 3 is embedded in the upper annular groove 121 at the bottom of the upper shaft 12.

[0073] S5.2: Release the gas in the annular airbag 3 through the trachea 31;

[0074] S5.3: Concrete is injected into the annular airbag 3 through the air pipe 31 to form an annular concrete component between the upper annular groove 121 and the lower annular groove 111.

[0075] By embedding the annular airbag 3 into the upper annular groove 121 of the upper wellbore 12 and utilizing the cooperation between the annular airbag 3 and the upper annular groove 121, it is helpful to cushion the impact of the upper wellbore 12 on the lower wellbore 11 when it is hoisted and placed into position, thereby helping the upper wellbore 12 to be smoothly placed at the top of the lower wellbore 11.

[0076] After the upper shaft 12 is completely positioned, concrete slurry is injected into the annular airbag 3 to form an annular concrete component. On the one hand, the formed annular concrete component is used to further limit the connection between the upper shaft 12 and the lower shaft 11, which is beneficial to improving the connection strength of the connection between the upper shaft 12 and the lower shaft 11; on the other hand, the annular concrete component can seal the connection between the upper shaft 12 and the lower shaft 11 to limit the subsequent sewage from seeping through the connection between the upper shaft 12 and the lower shaft 11, which is beneficial to improving the sealing of the connection between the upper shaft 12 and the lower shaft 11.

[0077] S6: Removal of auxiliary installation device: The specific steps are as follows:

[0078] S6.1: Connect the crane spreader to support column 2;

[0079] S6.2: While the support column 2 is lifted upward by the crane, the connecting rotary drive member 233 and the positioning rotary drive member 263 are respectively driven to rotate the connecting wheel 232 and the positioning wheel 262 until the support column 2 is removed from the sewage inspection well 1.

[0080] The present application installs an auxiliary installation device in the lower shaft 11 of the sewage inspection well 1 after hoisting it, and then hoists the upper shaft 12 above the lower shaft 11, and then uses the positioning component of the auxiliary installation device to position the upper shaft 12 so that the upper shaft 12 and the lower shaft 11 are axially aligned, and then continues to hoist the upper shaft 12, so that the upper shaft 12 can be quickly and accurately positioned on the lower shaft 11, which is beneficial to reducing the difficulty of assembling the well structure of the sewage inspection well 1.

[0081] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sewage inspection well auxiliary installation device, characterized in that: It comprises a support column (2), on which a connecting component and a positioning component are arranged; The connecting assembly is located at the bottom of the support column (2), and comprises a plurality of connecting cylinders (22) vertically arranged on the outer periphery of the support column (2), the plurality of connecting cylinders (22) are evenly distributed axially around the support column (2), and the ends of the piston rods of the connecting cylinders (22) are all provided with connecting parts (23); The positioning assembly is located at the top of the support column (2), and the positioning assembly comprises a plurality of positioning cylinders (25) vertically arranged on the outer periphery of the support column (2), the plurality of positioning cylinders (25) are evenly distributed axially around the support column (2), and the ends of the piston rods of the positioning cylinders (25) are all connected with positioning parts (26); The positioning portion (26) comprises a positioning seat (261) connected to the end of the piston rod of the positioning oil cylinder (25); the positioning seat (261) is horizontally rotatably connected to a positioning wheel (262); the axial direction of the positioning wheel (262) is perpendicular to the axial direction of the support column (2); The positioning seat (261) is also provided with a positioning rotary driving member (263), and the positioning rotary driving member (263) is drivingly connected to the positioning wheel (262) and is used to drive the positioning wheel (262) to rotate.

2. A sewage inspection well auxiliary installation device according to claim 1, characterized in that: The positioning assembly also includes a positioning support ring (24) coaxially sleeved on the support column (2), the positioning oil cylinder (25) is connected to the positioning support ring (24), and the support column (2) is also provided with a lifting drive member for driving the positioning support ring (24) to rise and fall along the support column (2).

3. A method for constructing a sewage inspection well, using the sewage inspection well auxiliary installation device according to any one of claims 1 to 2, characterized in that: The following steps are involved: S1: The well structure is put in place: the upper wellbore (12) and the lower wellbore (11) are moved to the assembly position of the sewage inspection well (1); S2: Lifting the lower shaft (11): Lifting the lower shaft (11) onto a concrete base using a crane; S3: auxiliary installation device support: the support column (2) is placed into the lower shaft (11), and a plurality of connecting cylinders (22) are used to drive the corresponding connecting parts (23) to abut against the inner circumference of the lower shaft (11), so as to coaxially support the support column (2) in the lower shaft (11); S4: Positioning the upper wellbore (12): hoisting the upper wellbore (12) above the lower wellbore (11); positioning the positioning assembly on the inner periphery of the upper wellbore (12); and then driving the corresponding positioning parts (26) to abut against the inner periphery of the upper wellbore (12) through a plurality of positioning oil cylinders (25), so that the upper wellbore (12) and the lower wellbore (11) are axially aligned; S5: The upper wellbore (12) is placed in position: the upper wellbore (12) is continuously hoisted until the bottom end surface of the upper wellbore (12) abuts against the top end surface of the lower wellbore (11); S6: Removal of auxiliary installation device: Remove the support column (2) from the sewage inspection well (1).

4. A sewage inspection well construction method according to claim 3, characterized in that: An upper annular groove (121) and a lower annular groove (111) are respectively provided at the adjacent ends of the upper wellbore (12) and the lower wellbore (11); an annular air bag (3) is also embedded in the lower annular groove (111), and the annular air bag (3) extends out of the top notch of the lower annular groove (111), and the annular air bag (3) is provided with an air pipe (31); In step S2, after the lower wellbore (11) is lowered into place, gas is injected into the annular airbag (3) through the air pipe (31) to expand the annular airbag (3); In step S5, while the upper wellbore (12) is hoisted to the top of the lower wellbore (11), the upper part of the annular airbag (3) is embedded in the upper annular groove (121) at the bottom end of the upper wellbore (12).

5. A sewage inspection well construction method according to claim 4, characterized in that: In step S5, after the upper portion of the annular airbag (3) is embedded in the upper annular groove (121) of the upper wellbore (12), the gas in the annular airbag (3) is first released through the air pipe (31), and then concrete is injected into the annular airbag (3) through the air pipe (31).

6. A sewage inspection well construction method according to claim 4, characterized in that: In step S4, before the upper shaft (12) is hoisted, waterproof mortar is applied to the top end surface of the lower shaft (11).

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