An inspection pit with adjustable elevation, inclination and gauge

Abstract

The utility model relates to rail transit technical field, concretely provides an inspection pit that can adjust elevation, inclination and gauge, including basic bottom plate, prefabricated column, column foot steel sheet connection system, pipeline sleeve group and gauge adjustment frock, pipeline sleeve group is embedded in prefabricated column and basic bottom plate, and the bottom of prefabricated column is detachably connected with basic bottom plate through column foot steel sheet connection system, and column foot steel sheet connection system includes column foot steel sheet, stiffening rib and anchor bar, and the both ends of gauge adjustment frock are provided with tenon, and the tenon can be connected with stiffening rib, and the tenon of gauge adjustment frock is buckled on stiffening rib, and gauge adjustment bolt is rotated, realizes prefabricated column gauge adjustment, in addition, the leveling nut of column foot steel sheet connection system is rotated in the same direction or reversely, and the column foot steel sheet is pushed, realizes prefabricated column height or inclination adjustment, and then adjusts the track laid on prefabricated column.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to an inspection pit with adjustable elevation, tilt and track gauge. Background Technology

[0002] Column-type inspection pits are used in the rail transit field, installed in subway or railway depots and maintenance depots for train maintenance. Currently, most column-type inspection pits are cast-in-place, which has disadvantages such as slow construction progress, poor site environment, and difficulty in controlling construction quality. In particular, on-site splitting is common at the connection between the column head and the rail fastener, and the construction accuracy is not up to standard. For other existing precast column solutions, the disadvantages are that a large number of rail panels need to be set up for reverse construction from top to bottom, the site space is small, and multiple manual fine adjustments are required, making it difficult to control the final track accuracy.

[0003] A method for constructing a track in a pre-reserved column inspection pit in a subway depot, patent publication number CN107313314B, includes the following steps: a) removing 500mm of concrete from the pre-reserved column below the rail surface; b) fixing the rail to the column using a rail fixing support frame and symmetrical inclined tie device, installing fasteners according to the position of the column corresponding to the rail, and assembling and connecting the rail panels; c) using the rail fixing support frame to adjust and control the geometric dimensions and precision of the track's bottom slope, gauge, direction, level, and elevation; d) pouring concrete after installing the pre-reserved column formwork. The pre-reserved column inspection pit track construction method, using a self-made rail support frame and symmetrical inclined tie device, effectively fixes the rail, ensuring the adjustment and precision control of track geometric dimensions such as bottom slope, gauge, direction, level, and elevation, meeting design and specification requirements. However, this patent still has some shortcomings: after the rail adjustment is completed, it is necessary to remove and replace the substitute pad and rail support frame, a very cumbersome process that is unsuitable for work conditions with limited space. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem of difficulty in accurately adjusting the track gauge during track laying, this utility model provides an inspection pit that can adjust the elevation, inclination and track gauge to solve the above problem. The technical solution adopted by this utility model to solve its technical problem is: an inspection pit with adjustable elevation, inclination, and track gauge, including a foundation plate, precast columns, a column base steel plate connection system, a pipeline sleeve assembly, and track gauge adjustment fixtures. The precast columns are used to erect the track. The pipeline sleeve assembly is embedded in the precast columns and the foundation plate. The opening of the pipeline sleeve assembly communicates with the outside of the precast columns and the foundation plate. The bottom of the precast columns is detachably connected to the foundation plate through the column base steel plate connection system. The foundation plate and the column... Grouting material is filled between the column base steel plate connection system. The column base steel plate connection system includes column base steel plates, stiffening ribs, and anchor bars. The column base steel plates are fixed to the bottom of the precast columns. The four corners of the column base steel plates have mirror-symmetrically arranged waist-shaped holes. The anchor bars pass through the waist-shaped holes one by one and are embedded in the foundation plate. The column base steel plates also have openings for laying the pipeline sleeve assembly. The stiffening ribs are fixed to the outer ring of the openings. The two ends of the gauge adjustment fixture are provided with tenons, which can engage with the stiffening ribs. Preferably, the gauge adjustment fixture further includes a gauge adjustment bolt, a connecting steel pipe, and a connecting steel plate. The gauge adjustment bolt has two sections of threads in opposite directions. There are two connecting steel pipes, which are respectively threaded to the two sections of threads of the gauge adjustment bolt. Each connecting steel pipe has a connecting steel plate fixed to its end. The latch is formed on one edge of the connecting steel plate.

[0005] Preferably, the precast column is a precast reinforced concrete column with a corbel structure.

[0006] Preferably, the column base steel plate connection system further includes a positioning steel plate, a fixing nut, and a leveling nut. The fixing nut and the leveling nut are both threaded to the top of the anchor bar. The leveling nut is located at the bottom of the column base steel plate and abuts against the column base steel plate. The fixing nut is located at the top of the column base steel plate for fixing the column base steel plate. The positioning steel plate is fixed to the foundation base plate and located directly below the precast column.

[0007] Preferably, an anchor bar end plate is also fixed to the bottom of the anchor bar, and the anchor bar end plate and the anchor bar are pre-embedded together in the foundation slab.

[0008] Preferably, the pipeline sleeve assembly includes an upper sleeve and a lower sleeve. The upper sleeve is embedded in the precast column and its two ends are connected to the outside of the precast column. The lower sleeve is embedded in the foundation slab and its two ends are connected to the outside of the foundation slab.

[0009] Preferably, the diameter of the upper sleeve is larger than the diameter of the lower sleeve, and the top end of the lower sleeve is higher than the upper surface of the foundation plate.

[0010] The beneficial effects of this utility model are as follows: Firstly, it is equipped with a column base steel plate connection system, which allows the locking tenon of the track gauge adjustment tool to be fastened to the clamping rib. By rotating the track gauge adjustment bolt, the track gauge of the precast column can be adjusted. In addition, rotating the leveling nut of the column base steel plate connection system in the same or opposite direction pushes the column base steel plate to adjust the height or inclination of the precast column, thereby adjusting the track laid on the precast column.

[0011] Secondly, the precast columns are precast reinforced concrete columns with corbels at the top. While meeting the requirements of the column width for the embedded track at the top of the column, it can also reduce the volume of the column project and the width of the foundation plate. This reduces costs and weight, making transportation and installation easier.

[0012] Thirdly, the lower sleeve extends 100mm above the foundation slab to prevent grout from flowing into it and causing blockages during grouting operations. The gap between the outer diameter of the lower sleeve and the inner diameter of the upper sleeve ensures that it does not affect the adjustment of the column gauge and tilt. This solves the problem of connecting pre-reserved pipelines between precast components.

[0013] Fourth, during the temporary period between the completion of precast column installation and track laying, the fixing nuts can be temporarily locked to prevent the precast columns from tilting and causing construction hazards.

[0014] Fifth, the column base steel plate connection system uses detachable bolt connections, which facilitates the replacement and repair of damaged columns in the future, greatly reducing maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the optimal embodiment of an inspection pit with adjustable elevation, tilt and gauge according to the present invention. Figure 2 yes Figure 1 Sectional view at point AA; Figure 3 yes Figure 1 Sectional view at point BB; Figure 4This is a structural schematic diagram of a column base steel plate connection system 2 for an inspection pit with adjustable elevation, tilt and gauge according to this utility model; Figure 5 yes Figure 4 Sectional view at CC; Figure 6 yes Figure 4 Sectional view at point DD; Figure 7 This is a schematic diagram of the track gauge adjustment bolt of an inspection pit that can adjust the elevation, inclination and track gauge according to this utility model; Figure 8 This is a schematic diagram of the locking structure of an inspection pit that can adjust the elevation, tilt and gauge according to this utility model. Figure 9 This is a schematic diagram of the foundation plate structure of an inspection pit with adjustable elevation, tilt and track gauge according to this utility model.

[0017] Reference numerals: 1. Precast column; 2. Column base steel plate connection system; 3. Grouting material; 4. Pipeline sleeve assembly; 5. Foundation base plate; 6. Track gauge adjustment fixture; 201. Column base steel plate; 203. Stiffening rib; 205. Positioning steel plate; 206. Anchor bar; 207. Anchor bar end plate; 208. Fixing nut; 209. Leveling nut; 401. Upper sleeve; 402. Lower sleeve; 6. Track gauge adjustment fixture; 601. Track gauge adjustment bolt; 602. Connecting steel pipe; 603. Connecting steel plate; 604. Tenon. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 9As shown, this utility model provides an embodiment of an inspection pit with adjustable elevation, tilt and track gauge, including a foundation plate 5, a precast column 1, a column base steel plate connection system 2, a pipeline sleeve assembly 4 and a track gauge adjustment fixture 6. The precast column 1 is a precast reinforced concrete column with a corbel structure and is used to erect the track.

[0021] The conduit sleeve assembly 4 is embedded in the precast column 1 and the foundation slab 5. The opening of the conduit sleeve assembly 4 is connected to the outside of the precast column 1 and the foundation slab 5. The conduit sleeve assembly 4 includes an upper sleeve 401 and a lower sleeve 402. The upper sleeve 401 is embedded in the precast column 1 and its openings at both ends are connected to the outside of the precast column 1. The lower sleeve 402 is embedded in the foundation slab 5 and its openings at both ends are connected to the outside of the foundation slab 5, which facilitates the wiring when installing inspection pit lights and sockets.

[0022] The diameter of the upper sleeve 401 is larger than that of the lower sleeve 402. The walls of the upper sleeve 401 and the lower sleeve 402 are separated to form a gap. When adjusting the inclination of the precast column base, the gap between the upper sleeve 401 and the lower sleeve 402 can provide space for the inclination adjustment and track gauge adjustment of the precast column base, thus solving the connection problem between the reserved pipeline and the subsequent pipeline.

[0023] The foundation plate 5 has a groove for placing the precast column 1. The grouting material 3 can be poured into the groove. The bottom of the precast column 1 is detachably connected to the foundation plate 5 through the column foot steel plate connection system 2, which facilitates the replacement and repair of the precast column 1 that is damaged in the later stage, and greatly reduces the maintenance cost.

[0024] The top of the lower sleeve 402 is higher than the upper surface of the foundation plate 5. Preferably, the top of the lower sleeve 402 is 100mm higher than the groove to avoid the grout material 3 flowing into the lower sleeve 402 during the pouring process and causing blockage of the lower sleeve 402. Grouting material 3 is filled between the foundation plate 5 and the column base steel plate connection system 2. After the grouting material 3 solidifies, it can improve the connection stability of the precast column 1 and prevent the column base steel plate connection system 2 from loosening. On the other hand, it can also seal the column base steel plate connection system 2, prevent the column base steel plate connection system 2 from being exposed, and improve the service life of the column base steel plate connection system 2.

[0025] The column base steel plate connection system 2 includes a column base steel plate 201, stiffening ribs 203, and anchor bars 206. The column base steel plate 201 is fixed to the bottom of the precast column 1. The four corners of the column base steel plate 201 are provided with mirror-symmetrically arranged waist-shaped holes. The anchor bars 206 pass through the waist-shaped holes one by one and are embedded in the foundation plate 5. The column base steel plate 201 is also provided with openings for laying pipeline sleeve groups 4. The stiffening ribs 203 are fixed to the outer ring of the openings to improve the strength of the column base steel plate 201 at the openings. The opening diameter is preferably 200mm, which can meet the requirements of the grouting material 3 at the top of the lower sleeve 402 and the bottom of the upper sleeve 401 passing through the openings on the column base steel plate 201, and can also avoid the reduction of the strength of the column base steel plate 201 due to the excessively large opening diameter.

[0026] The column base steel plate connection system 2 also includes a positioning steel plate 205, a fixing nut 208, and a leveling nut 209. The fixing nut 208 and the leveling nut 209 are both threaded to the top of the anchor bar 206. The bottom of the anchor bar 206 is also fixed with an anchor bar end plate 207. The anchor bar end plate 207 and the anchor bar 206 are pre-embedded in the foundation plate 5 together to improve the anchoring strength between the anchor bar 206 and the foundation plate 5.

[0027] The leveling nut 209 is located at the bottom of the column base steel plate 201 and abuts against the column base steel plate 201. By rotating the leveling nut 209, the column base steel plate 201 can be moved up or down. Rotating all the leveling nuts 209 in the same direction of the column base steel plate connection system 2 can adjust the elevation. Rotating the leveling nuts 209 on both sides of the precast column 1 in the opposite direction of the column base steel plate connection system 2 can adjust the tilt of the column base steel plate 201, thereby achieving the purpose of accurately adjusting the height and tilt of the precast column 1.

[0028] The fixing nut 208 is located on the top of the column base steel plate 201 to fix the column base steel plate 201. After adjustment, the fixing nut 208 is used to lock the column base steel plate 201 to prevent the column base steel plate 201 from shaking during use. In addition, during the temporary state between the completion of the precast column 1 installation and the track laying operation, the fixing nut 208 can be temporarily locked to prevent the precast column 1 from tilting and causing construction hazards.

[0029] The positioning steel plate 205 is fixed on the foundation plate 5 and located directly below the precast column 1. The anchor bar 206 passes through the positioning steel plate 205 and is embedded in the foundation plate 5. The positioning steel plate 205 can improve the stability of the anchor bar 206 and avoid the positioning deviation of the anchor bar 206 caused by pouring concrete during the processing of precast components.

[0030] The gauge adjustment fixture 6 has latches 604 at both ends, which can engage with stiffening ribs 203. The gauge adjustment fixture 6 also includes gauge adjustment bolts 601, connecting steel pipes 602 and connecting steel plates 603. The gauge adjustment bolts 601 have two threads in opposite directions. There are two connecting steel pipes 602, which are threaded onto the two threads of the gauge adjustment bolts 601 respectively. Each connecting steel pipe 602 has a connecting steel plate 603 fixed at its end. The latches 604 are located on one edge of the connecting steel plate 603.

[0031] By rotating the gauge adjustment bolt 601, the connecting steel pipes 602 at both ends can move synchronously in opposite directions, thereby driving the two precast columns 1 to move closer or further apart along the length of the waist-shaped hole through the connecting steel plate 603, thus achieving the effect of gauge adjustment.

[0032] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. The above are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the scope of protection of this application.

Claims

1. An adjustable grade, tilt and gage inspection pit, characterized by: The system includes a foundation slab (5), precast columns (1), a column base steel plate connection system (2), a pipeline sleeve assembly (4), and a gauge adjustment fixture (6). The precast columns (1) are used to erect the track. The pipeline sleeve assembly (4) is embedded in the precast columns (1) and the foundation slab (5). The opening of the pipeline sleeve assembly (4) is connected to the outside of the precast columns (1) and the foundation slab (5). The bottom of the precast columns (1) is detachably connected to the foundation slab (5) through the column base steel plate connection system (2). Grouting material (3) is filled between the foundation slab (5) and the column base steel plate connection system (2). 2) Includes column base steel plate (201), stiffening rib (203) and anchor bar (206). The column base steel plate (201) is fixed to the bottom of the precast column (1). The four corners of the column base steel plate (201) are provided with mirror-symmetrical waist-shaped holes. The anchor bars (206) pass through the waist-shaped holes one by one and are embedded in the foundation plate (5). The column base steel plate (201) is also provided with openings for laying the pipeline sleeve group (4). The stiffening rib (203) is fixed to the outer ring of the opening. The two ends of the gauge adjustment fixture (6) are provided with tenons (604). The tenons (604) can be engaged with the stiffening rib (203).

2. An adjustable grade, cant, and gage inspection pit as in claim 1, wherein: The gauge adjustment fixture (6) also includes a gauge adjustment bolt (601), a connecting steel pipe (602), and a connecting steel plate (603). The gauge adjustment bolt (601) has two threads in opposite directions. There are two connecting steel pipes (602), which are threaded to the two threads of the gauge adjustment bolt (601). The end of each connecting steel pipe (602) is fixed with a connecting steel plate (603). The latch (604) is opened on one side edge of the connecting steel plate (603).

3. An adjustable grade, cant, and gage inspection pit as in claim 1, wherein: The precast column (1) is a precast reinforced concrete column with a corbel structure.

4. An adjustable grade, cant, and gage inspection pit as in claim 1, wherein: The column base steel plate connection system (2) also includes a positioning steel plate (205), a fixing nut (208) and a leveling nut (209). The fixing nut (208) and the leveling nut (209) are both threaded to the top of the anchor bar (206). The leveling nut (209) is located at the bottom of the column base steel plate (201) and abuts against the column base steel plate (201). The fixing nut (208) is located at the top of the column base steel plate (201) for fixing the column base steel plate (201). The positioning steel plate (205) is fixed on the foundation plate (5) and located directly below the precast column (1).

5. An adjustable grade, cant, and gage inspection pit as in claim 1, wherein: The bottom of the anchor bar (206) is also fixed with an anchor bar end plate (207), which is embedded together with the anchor bar (206) in the foundation plate (5).

6. An adjustable grade, cant, and gage inspection pit as in claim 1, wherein: The pipeline sleeve group (4) comprises an upper sleeve (401) and a lower sleeve (402), the upper sleeve (401) is embedded in the prefabricated column (1) and communicates with the outside of the prefabricated column (1) at both ends, and the lower sleeve (402) is embedded in the foundation bottom plate (5) and communicates with the outside of the foundation bottom plate (5) at both ends.

7. An adjustable grade, cant and gage inspection pit as defined in claim 6 wherein: The diameter of the upper sleeve (401) is greater than that of the lower sleeve (402), and the top end of the lower sleeve (402) is higher than the upper surface of the foundation bottom plate (5).

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