Full-assembly column type inspection pit with self-leveling system

Abstract

The utility model belongs to the technical field of rail transit, and particularly relates to a full-assembly column type inspection pit with a self-leveling system, which comprises a cushion layer, a prefabricated foundation slab, a prefabricated upright post, a leveling screw rod and a prefabricated foundation slab tooling system, the prefabricated foundation bottom plate is placed on the cushion layer, the prefabricated stand column is installed on the prefabricated foundation bottom plate through the stand column assembly structure and fixed through the leveling screw rod, the prefabricated foundation bottom plate is roughly leveled through the temporarily-installed jack, and the prefabricated stand column is finely leveled by rotating the leveling screw rod. The prefabricated stand column is limited in the groove of the foundation bottom plate and fixed through a flat head screw with a screw support, the prefabricated foundation bottom plate is roughly leveled through a jack temporarily installed on the reserved leveling and hoisting bolt hole, and the prefabricated stand column is finely leveled by rotating the flat head screw with the screw support; therefore, the problems of forward construction and accurate leveling of the prefabricated column type inspection pit are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transportation, and in particular relates to a fully assembled column-type inspection pit with a self-leveling system. Background Art

[0002] Column-type inspection pits are used in the field of rail transit and are set up in subway or railway operation depots, maintenance depots, etc. for train maintenance. Currently, column-type inspection pits are mostly cast-in-place solutions or cast-in-place with prefabricated column base plates. For fully cast-in-place solutions, the disadvantages include slow construction progress, poor site environment, difficulty in controlling construction quality (especially the common occurrence of on-site splitting at the connection between the column head and the rail fastener), and substandard construction accuracy. For cast-in-place solutions with prefabricated column base plates, the disadvantages include the need to construct from top to bottom in reverse to control column accuracy, the small on-site space requiring manual leveling, the common conflict between the prefabricated column rebar and the base plate rebar, the need to configure a large number of positioning rail racks on the construction site, and the common occurrence of cracks at the junction of the prefabricated column and the cast-in-place base plate. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the utility model provides a fully assembled column type inspection pit with a self-leveling system.

[0004] The technical solution adopted by the present invention to solve this problem is:

[0005] A fully assembled column-type inspection pit with a self-leveling system includes a cushion layer, a prefabricated foundation base plate, prefabricated columns, leveling screws and a prefabricated foundation base plate tooling system, wherein: the prefabricated foundation base plate is horizontally transported by the prefabricated foundation base plate tooling system, the prefabricated foundation base plate is placed on the cushion layer, the prefabricated columns are installed on the prefabricated foundation base plate by a column assembly structure and fixed by leveling screws, the prefabricated foundation base plate is roughly leveled by a temporarily installed jack, and the prefabricated columns are finely leveled by rotating the leveling screws.

[0006] In the above technical solution, the cushion layer is a C20 self-compacting concrete cushion layer.

[0007] In the above technical solution, the prefabricated foundation slab includes a prefabricated foundation slab body, reserved column grooves, reserved column screw holes, grouting holes, overflow holes, reserved leveling and hoisting bolt holes and prefabricated drainage grooves.

[0008] In the above technical solution, a plurality of reserved column grooves are opened on the prefabricated foundation base plate body. Preferably, six reserved column grooves are opened on the prefabricated foundation base plate body.

[0009] In the above technical solution, a plurality of reserved column screw holes are reserved in each reserved column groove. Preferably, four reserved column screw holes are reserved in each reserved column groove.

[0010] In the above technical solution, grouting holes and overflow holes are provided on the prefabricated foundation slab body. Preferably, one grouting hole and two overflow holes are provided on the prefabricated foundation slab body.

[0011] In the above technical solution, a drainage groove is also reserved on the prefabricated foundation base plate body. Preferably, a 50mmX30mm drainage groove is reserved on the prefabricated foundation base plate body.

[0012] In the above technical solution, a number of leveling and hoisting bolt holes are reserved on the prefabricated foundation base plate body. Preferably, four leveling and hoisting bolt holes are reserved on the prefabricated foundation base plate body.

[0013] In the above technical solution, the leveling and hoisting bolt holes are reserved on the prefabricated foundation base plate body;

[0014] During the transportation phase, the hook bolts are inserted, and the prefabricated foundation slab tooling system lifts and transports the prefabricated foundation slab through the hook bolts;

[0015] During the construction phase, it is used to insert leveling jacks to level the precast foundation slab body.

[0016] In the above technical solution, a C20 self-compacting concrete cushion layer is arranged under the prefabricated foundation slab body. After the prefabricated foundation slab is leveled, the self-compacting concrete is injected into the gap below the prefabricated foundation slab body through the grouting holes arranged on the prefabricated foundation slab body. After the concrete overflows from the overflow holes on the prefabricated foundation slab body, the self-compacting concrete is ensured to be dense, forming a cushion layer for fixing the prefabricated foundation slab body.

[0017] In the above technical solution, during the temporary fixing stage of the prefabricated foundation slab main body, the two prefabricated foundation slab main bodies are placed with a distance of 400mm, and 400mm long steel bars are thrown on the prefabricated foundation slab main bodies. After the on-site fixing is completed, micro-expansive concrete is poured to complete the fixation between the two prefabricated foundation slab main bodies.

[0018] In the above technical solution, the prefabricated column includes a prefabricated column body, an extended flange of the column foot and reserved leveling and fixing holes, wherein: the prefabricated column body and the extended flange of the column foot are prefabricated in an integrated manner, and a plurality of reserved leveling and fixing holes are reserved on the extended flange of the column foot. Preferably, four reserved leveling and fixing holes are reserved on the extended flange of the column foot.

[0019] In the above technical solution, the column assembly structure includes a reserved column groove and an extended flange of the column foot. The extended flange of the column foot is limited in the column groove set on the prefabricated base plate, and the reserved leveling fixing hole corresponds to the position of the reserved column screw hole.

[0020] In the above technical solution, the leveling screw includes a flat head screw with a screw support, an anti-loosening nut and a steel plate. The flat head screw with the screw support connects the prefabricated column body to the prefabricated base plate body. The flat head screw with the screw support is tightened into the reserved column screw hole and the prefabricated column body is fixed by the anti-loosening nut.

[0021] In the above technical solution, the diameter of the screw part of the flat-head screw with a screw support is smaller than the diameter of the reserved leveling fixing hole. Preferably, the diameter of the screw part of the flat-head screw with a screw support is 20 mm, and the diameter of the reserved leveling fixing hole is 50 mm. The gap between the flat-head screw with a screw support and the reserved leveling fixing hole can be used to adjust the position of the column along the track direction and the horizontal track direction.

[0022] In the above technical solution, the diameter of the screw support part of the flat-head screw with screw support is larger than the diameter of the reserved leveling fixing hole. Preferably, the diameter of the screw support part of the flat-head screw with screw support is 100 mm, which is larger than the reserved leveling fixing hole with a diameter of 50 mm. By rotating the flat-head screw, the screw support can push the reserved leveling fixing hole to achieve precise leveling of the prefabricated column body.

[0023] In the above technical solution, the prefabricated foundation slab tooling system adopts a four-wheel tooling trolley, which uses its own hand-cranked hoist to hook the hook bolts inserted into the reserved leveling and lifting bolt holes to lift the prefabricated foundation slab and hang it under the four-wheel tooling trolley. The prefabricated foundation slab body can be horizontally transported by manually pushing the trolley.

[0024] Compared with the existing technology, this utility model proposes a fully assembled column type inspection pit with a self-leveling system, which has the following advantages and positive effects:

[0025] 1. In the present invention, the prefabricated foundation base plate is placed on the cushion layer, the prefabricated columns are limited in the groove of the foundation base plate and are fixed by flat-head screws with screw supports. The prefabricated foundation base plate is roughly leveled by a jack temporarily installed on the reserved leveling and lifting bolt holes, and the prefabricated columns are finely leveled by rotating the flat-head screws with screw supports, thereby solving the problem of forward construction and precise leveling of prefabricated assembly column inspection pits.

[0026] 2. In the present invention, leveling holes for inserting leveling jacks are reserved in the foundation base plate to achieve leveling of the prefabricated foundation base plate body. The outwardly extending flanges of the prefabricated column foot of the present application are connected to the prefabricated foundation base plate through flat-head screws with screw supports. The prefabricated column can be leveled by rotating the flat-head screws with screw supports. The present application achieves precise leveling of the track installation and realizes forward construction of the assembled inspection pit by leveling the base base plate body and the prefabricated column twice.

[0027] 3. In the present invention, the gap between the large-diameter reserved leveling fixing hole provided on the outwardly extending flange of the column foot and the flat-head screw can be used to adjust the position of the column along and across the track within any 15mm range.

[0028] 4. In the present invention, the foundation base plate reserves a column groove, the extended flange of the prefabricated column can be clamped in the groove, and the column can be fixed by a screw to achieve safe and effective force transmission.

[0029] 5. In the present invention, the prefabricated foundation slab tooling system can realize the lifting and horizontal transportation of the prefabricated foundation slab in a small working space. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structures described herein and are not necessarily drawn to scale.

[0031] Figure 1 It is the main view of the utility model;

[0032] Figure 2 yes Figure 1 1-1 cross-sectional view;

[0033] Figure 3 This is the main view of the prefabricated foundation floor in the present utility model;

[0034] Figure 4 yes Figure 3 Section 2-2 of

[0035] Figure 5 5a is a side view; 5b is a front view;

[0036] Figure 6 It is a structural schematic diagram of the leveling screw of the utility model;

[0037] Figure 7 This is a front view of the prefabricated foundation floor tooling system of the utility model;

[0038] Figure 8 yes Figure 7 Section 3-3 of

[0039] Figure 9 9a is a schematic diagram of step 2 in the construction sequence of the present invention, wherein: 9a is a front view; 9b is a 4-4 cross-sectional view;

[0040] Figure 1010a is a schematic diagram of step 3 in the construction sequence of the present invention, wherein: 10a is a front view; 10b is a 5-5 cross-sectional view;

[0041] Figure 11 It is a schematic diagram of step four in the construction sequence of the present invention, wherein: 11a is a main view; 11b is a 6-6 cross-sectional view.

[0042] Description of reference numerals:

[0043] 1. Pad layer; 2. Precast foundation slab; 201. Precast foundation slab body; 202. Reserved column groove; 203. Reserved column screw hole; 204. Grouting hole; 205. Overflow hole; 206. Reserved leveling and lifting bolt hole; 207. Reserved drainage groove; 3. Precast column; 301. Precast column body; 302. Extended flange of column foot; 303. Reserved leveling fixing hole; 4. Leveling screw; 401. Flat head screw with screw support; 402. Anti-loosening nut; 403. Steel pad; 5. Precast foundation slab tooling system; 501. Four-wheel tooling trolley; 502. Hand hoist; 503. Hook bolt. DETAILED DESCRIPTION

[0044] First, it should be noted that the specific structure, features, and advantages of the present invention will be described in detail below by way of example. However, all descriptions are for illustration only and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the drawings, can still be combined or deleted in any way between these technical features (or their equivalents), thereby obtaining more other embodiments of the present invention that may not be directly mentioned herein. In addition, for the sake of simplifying the drawings, the same or similar technical features may be marked in only one place in the same drawing.

[0045] In this utility model, unless otherwise specified or limited, the terms "installation", "setting", "connection", "fixation", "screw connection" and the like should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Unless otherwise specified, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances. The utility model will be described in detail below with reference to the accompanying drawings. Example

[0046] A fully assembled column-type inspection pit with a self-leveling system includes a cushion layer 1, a prefabricated foundation base plate 2, prefabricated columns 3, leveling screws 4 and a prefabricated foundation base plate tooling system 5, wherein: the prefabricated foundation base plate 2 is horizontally transported by the prefabricated foundation base plate tooling system 5, the prefabricated foundation base plate 2 is placed on the cushion layer 1, the prefabricated columns 3 are installed on the prefabricated foundation base plate 2 by a column assembly structure, and are fixed by the leveling screws 4, the prefabricated foundation base plate 2 is roughly leveled by a temporarily installed jack, and the prefabricated columns 3 are finely leveled by rotating the leveling screws 4.

[0047] Furthermore, in this embodiment, it can also be considered that the cushion layer 1 is made of C20 self-compacting concrete.

[0048] Furthermore, in this embodiment, the prefabricated foundation slab 2 includes a prefabricated foundation slab body 201, reserved column grooves 202, reserved column screw holes 203, grouting holes 204, overflow holes 205, reserved leveling and hoisting bolt holes 206, and a prefabricated drainage groove 207, wherein:

[0049] Several reserved column grooves 202 are opened on the prefabricated foundation base plate body 201. Preferably, six reserved column grooves 202 are opened on the prefabricated foundation base plate body 201. The column grooves 202 are reserved in the prefabricated foundation base plate body 201, and the prefabricated column body 301 can be clamped in the column grooves 202.

[0050] Furthermore, in this embodiment, it is also contemplated that each reserved column groove 202 has several reserved column screw holes 203 reserved therein. Preferably, each reserved column groove 202 has four reserved column screw holes 203 reserved therein. Four reserved column screw holes 203 are provided in the reserved column groove 202 in the prefabricated foundation base plate body 201, and a flat head screw 401 with a screw support can be screwed into the reserved column screw holes 203.

[0051] Furthermore, in this embodiment, it can also be considered that a grouting hole 204 and an overflow hole 205 are provided on the prefabricated foundation base plate body 201. Preferably, one grouting hole 204 and two overflow holes 205 are provided on the prefabricated foundation base plate body 201.

[0052] Furthermore, in this embodiment, it can also be considered that a drainage groove 207 is reserved on the prefabricated foundation base plate body 201. Preferably, a 50mmX30mm drainage groove 207 is reserved on the prefabricated foundation base plate body 201.

[0053] Furthermore, in this embodiment, it can be considered that a plurality of reserved leveling and hoisting bolt holes 206 are reserved on the prefabricated foundation base plate body 201. Preferably, four reserved leveling and hoisting bolt holes 206 are reserved on the prefabricated foundation base plate body 201. The reserved leveling and hoisting bolt holes 206 on the prefabricated foundation base plate body 201;

[0054] During the transportation phase, the hook bolts are inserted, and the prefabricated foundation slab tooling system 5 lifts and transports the prefabricated foundation slab body 201 through the hook bolts;

[0055] During the construction phase, the leveling jacks are inserted to level the prefabricated foundation slab body 201 .

[0056] Furthermore, in this embodiment, it can also be considered that a C20 self-compacting concrete cushion layer 1 is set under the precast foundation base plate body 201. After the precast foundation base plate 201 is leveled, the self-compacting concrete is injected into the lower gap of the precast foundation base plate body through the grouting holes 204 set on the precast foundation base plate body 201. After the concrete overflows from the overflow holes 205 on the precast foundation base plate body 201, the self-compacting concrete is guaranteed to be dense, forming a cushion layer for fixing the precast foundation base plate body 201.

[0057] Furthermore, in this embodiment, it can also be considered that during the temporary fixing stage of the prefabricated foundation slab main body 201, the two prefabricated foundation slab main bodies 201 are placed with a distance of 400 mm, and the prefabricated foundation slab main bodies 201 are thrown with 400 mm long steel bars. After the on-site fixing is completed, micro-expansion concrete is poured in the joints to complete the fixation between the two prefabricated foundation slab main bodies 201.

[0058] Furthermore, in this embodiment, it can also be considered that the prefabricated column 3 includes a prefabricated column body 301, an extended flange 302 of the column foot and a reserved leveling fixing hole 303, wherein: the prefabricated column body 301 and the extended flange 302 of the column foot are prefabricated in one piece, and a plurality of reserved leveling fixing holes 303 are reserved on the extended flange 302 of the column foot. Preferably, four reserved leveling fixing holes 303 are reserved on the extended flange 302 of the column foot. Taking this embodiment as an example, four reserved leveling fixing holes 303 with a diameter of 50 mm are set on the extended flange 302 of the column foot, and the screw part of the flat head screw 501 with a screw support has a diameter of 20 mm. The gap between the screw and the leveling fixing hole 303 with a diameter of 50 mm can be used for adjusting the position of the column along the track direction and the horizontal track direction.

[0059] Furthermore, in this embodiment, it can also be considered that the column assembly structure includes a reserved column groove 202 and an extended flange 302 of the column foot, and the extended flange 302 of the column foot is limited to the column groove 202 set on the prefabricated base plate 201, and the reserved leveling fixing hole 303 corresponds to the position of the reserved column screw hole 203.

[0060] Furthermore, in this embodiment, it can also be considered that the leveling screw 4 includes a flat head screw 401 with a screw support, an anti-loosening nut 402 and a steel pad 403. The flat head screw 401 with the screw support connects the prefabricated column body 301 to the prefabricated base plate body 201. The flat head screw 401 with the screw support is tightened into the reserved column screw hole 203 and the prefabricated column body 301 is fixed by the anti-loosening nut 402.

[0061] Furthermore, in this embodiment, it can also be considered that the diameter of the screw part of the flat head screw 401 with a screw support is smaller than the diameter of the reserved leveling fixing hole 303. Preferably, the diameter of the screw part of the flat head screw 401 with a screw support is 20 mm, and the diameter of the reserved leveling fixing hole 303 is 50 mm. The gap between the flat head screw 401 with a screw support and the reserved leveling fixing hole 303 can be used to adjust the position of the column along the track direction and the horizontal track direction.

[0062] Furthermore, in this embodiment, it can also be considered that the diameter of the screw support part of the flat head screw 401 with a screw support is larger than the diameter of the reserved leveling fixing hole 303. Preferably, the diameter of the screw support part of the flat head screw 401 with a screw support is 100 mm, which is larger than the reserved leveling fixing hole 303 with a diameter of 50 mm. By rotating the flat head screw, the screw support can push the reserved leveling fixing hole 303 to achieve precise leveling of the prefabricated column body.

[0063] Furthermore, in this embodiment, it can also be considered that the prefabricated foundation floor tooling system adopts a four-wheel tooling trolley 501, and uses its own hand-cranked hoist 502 to hook the hook bolt 503 inserted into the reserved leveling and lifting bolt hole 206 to lift the prefabricated foundation floor main body 201 and hang it under the four-wheel tooling trolley 501. By manually pushing the trolley, the horizontal transportation of the prefabricated foundation floor main body 201 can be achieved.

[0064] In this embodiment, Figures 1 to 11As shown, a fully assembled column type inspection pit with a self-leveling system includes a cushion layer 1, a prefabricated foundation base plate 2, a prefabricated column 3, a leveling screw 4, and a prefabricated foundation base plate tooling system 5; the cushion layer 1 is made of C20 self-compacting concrete; the prefabricated foundation base plate 2 includes a prefabricated foundation base plate body 201, reserved column grooves 202, reserved column screw holes 203, grouting holes 204, overflow holes 205, reserved leveling and hanging bolt holes 206 and a prefabricated drainage groove 207, six reserved column grooves 202 are provided on the prefabricated foundation base plate body 201, four reserved column screw holes 203 are reserved in each reserved column groove 202, one grouting hole 204 and two overflow holes 205 are provided on the prefabricated foundation base plate body 201, Four reserved leveling and hanging bolt holes 206 are reserved on the prefabricated foundation base plate body 201, and a drainage groove 207 is reserved on the prefabricated foundation base plate body 201; the prefabricated column 3 includes a prefabricated column body 301, an extended flange 302 of the column foot and a reserved leveling fixing hole 303, the extended flange 302 of the column foot is limited to the column groove 202 set on the prefabricated base plate 201, and the leveling fixing hole 303 corresponds to the reserved column screw hole 203; the leveling screw 4 includes a flat head screw 401 with a screw support, an anti-loosening nut 402 and a steel pad 403, the flat head screw 401 with a screw support connects the prefabricated column body 301 to the prefabricated base plate body 201, and fixes the prefabricated column body 301 through the anti-loosening nut 402.

[0065] In this embodiment, the prefabricated foundation base plate is roughly leveled by temporarily installing a jack on the reserved leveling and lifting bolt holes, and the prefabricated column is finely leveled by rotating the flat-head screw with a screw support, thereby solving the problem of forward construction and precise leveling of the prefabricated assembly column inspection pit.

[0066] like Figures 9-11 , the construction sequence of this utility model is as follows:

[0067] Step 1: Figure 7 、 8 The prefabricated foundation slab tooling system 5 is used to horizontally transport the prefabricated foundation slab body 201 to a predetermined location;

[0068] Step 2: Figure 9 , install the prefabricated foundation base plate body 201, use the leveling jack to insert the reserved leveling and lifting bolt holes 206 to level the prefabricated foundation base plate body 201;

[0069] Step 3: Figure 10 , support the side formwork, pour C20 self-compacting concrete into the overflow hole until the self-compacting concrete fills the cushion layer, and overflows from the overflow hole, and pours micro-expansion concrete in the joints to complete the fixation between the prefabricated foundation bottom plate bodies 201;

[0070] Step 4: If Figure 11 , screw the flat head screw 401 with the screw support into the reserved screw hole 203, insert the prefabricated column body 301 into the reserved column groove 202, level the prefabricated column body 301 by rotating the flat head screw 401 with the screw support, tighten the anti-loosening nut 402, complete the fixing of the prefabricated column, grout the column foot, and lay the track;

[0071] In the present invention, by leveling the prefabricated foundation base plate body and prefabricated columns twice, precise positioning of the track installation can be achieved, enabling forward construction of the assembled inspection pit. At the same time, the gap between the large-diameter reserved leveling fixing holes set on the extended flange of the column foot and the flat-head screw can be used to adjust the position of the column along and across the track within any 15mm range. The grouting holes set in the foundation base plate are connected to the overflow holes reserved in the prefabricated foundation base plate, which can achieve one-time grouting to fix the prefabricated foundation base plate to the cushion layer and fill the gap between the prefabricated columns and the grooves of the prefabricated foundation base plate. The present invention achieves high-precision leveling and positioning, rapid forward construction from bottom to top, and ensures the safety and reliability of the connection nodes when the assembled inspection pit is fully assembled.

[0072] The above embodiments provide a detailed description of the present invention. However, the contents described are merely preferred embodiments of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of the patent application of the present invention.

Claims

1. A fully assembled column inspection pit with a self-leveling system, characterized by: The invention comprises a cushion layer (1), a prefabricated foundation base plate (2), a prefabricated column (3), a leveling screw (4) and a prefabricated foundation base plate tooling system (5), wherein: the prefabricated foundation base plate (2) is horizontally transported by the prefabricated foundation base plate tooling system (5), the prefabricated foundation base plate (2) is placed on the cushion layer (1), the prefabricated column (3) is installed on the prefabricated foundation base plate (2) by a column assembly structure and fixed by the leveling screw (4), the prefabricated foundation base plate (2) is roughly leveled by a temporarily installed jack, and the prefabricated column (3) is finely leveled by rotating the leveling screw (4).

2. A fully assembled column type inspection pit with a self-leveling system according to claim 1, characterized in that: The cushion layer (1) is a C20 self-compacting concrete cushion layer.

3. A fully assembled column type inspection pit with a self-leveling system according to claim 1, characterized in that: The prefabricated foundation base plate (2) comprises a prefabricated foundation base plate body (201), reserved column grooves (202), reserved column screw holes (203), grouting holes (204), overflow holes (205), reserved leveling and hanging bolt holes (206), and a prefabricated drainage groove (207), wherein: A plurality of reserved column grooves (202) are provided on the prefabricated foundation base plate body (201), and a plurality of reserved column screw holes (203) are reserved in each reserved column groove (202). Grouting holes (204) and overflow holes (205) are provided on the prefabricated foundation base plate body (201), and a drainage groove (207) is also reserved on the prefabricated foundation base plate body (201).

4. A fully assembled column type inspection pit with a self-leveling system according to claim 3, characterized in that: A plurality of reserved leveling and hoisting bolt holes (206) are reserved on the prefabricated foundation base plate body (201); the reserved leveling and hoisting bolt holes (206) on the prefabricated foundation base plate body (201); During the transportation phase, the hook bolts are inserted, and the prefabricated foundation base plate tooling system (5) lifts and transports the prefabricated foundation base plate body (201) through the hook bolts; During the construction phase, the leveling jack is inserted to level the prefabricated foundation slab body (201).

5. The fully assembled column type inspection pit with a self-leveling system according to claim 3, characterized in that: The prefabricated column (3) comprises a prefabricated column body (301), a column foot extending flange (302), and reserved leveling fixing holes (303), wherein: the prefabricated column body (301) and the column foot extending flange (302) are prefabricated in an integrated manner, and a plurality of reserved leveling fixing holes (303) are reserved on the column foot extending flange (302).

6. A fully assembled column type inspection pit with a self-leveling system according to claim 5, characterized in that: The column assembly structure comprises a reserved column groove (202) and a column foot extending flange (302), wherein the column foot extending flange (302) is limited in the column groove (202) provided on the prefabricated foundation base plate body (201), and the reserved leveling fixing hole (303) corresponds to the position of the reserved column screw hole (203).

7. The fully assembled column type inspection pit with a self-leveling system according to claim 3, characterized in that: The leveling screw (4) comprises a flat head screw (401) with a screw support, an anti-loosening nut (402) and a steel backing plate (403); the flat head screw (401) with the screw support connects the prefabricated column body (301) to the prefabricated foundation base plate body (201); the flat head screw (401) with the screw support is screwed into the reserved column screw hole (203) and fixes the prefabricated column body (301) via the anti-loosening nut (402).

8. A fully assembled column type inspection pit with a self-leveling system according to claim 7, characterized in that: The diameter of the screw portion of the flat-head screw (401) with the screw support is smaller than the diameter of the reserved leveling fixing hole (303), and the gap between the flat-head screw (401) with the screw support and the reserved leveling fixing hole (303) can be used for adjusting the position of the column in the direction along the track and in the direction across the track.

9. The fully assembled column type inspection pit with a self-leveling system according to claim 7, characterized in that: The screw support portion of the flat-head screw (401) with the screw support has a diameter greater than the diameter of the reserved leveling fixing hole (303). By rotating the flat-head screw, the screw support can push the reserved leveling fixing hole (303) to achieve precise leveling of the prefabricated column body.

10. A fully assembled column type inspection pit with a self-leveling system according to any one of claims 3 to 9, characterized in that: The prefabricated foundation base plate tooling system adopts a four-wheel tooling trolley (501), which hooks the hook bolt (503) inserted into the reserved leveling and lifting bolt hole (206) through its own hand-cranked hoist (502), lifts the prefabricated foundation base plate body (201), and suspends it under the four-wheel tooling trolley (501). By manually pushing the trolley, the prefabricated foundation base plate body (201) can be horizontally transported.

Images