Auxiliary supporting structure for tunnel maintenance

Abstract

The utility model discloses an auxiliary supporting structure for tunnel maintenance, which belongs to the technical field of engineering construction auxiliary frames and comprises a supporting frame and an operating platform below the supporting frame, and the operating platform comprises a supporting column with a traveling mechanism and a top platform. The supporting frame comprises a main body framework and auxiliary supports, the main body framework comprises two rows of main stand columns and an arc-shaped arch frame at the top, connecting beams are arranged at the tops of the two rows of main stand columns, the arc-shaped arch frame comprises a plurality of arc-shaped beams and auxiliary supporting beams, the two ends of each arc-shaped beam are connected with the connecting beams, and the two auxiliary supporting beams are axially and symmetrically arranged on the arch waist portions of the two sides of each arc-shaped beam; the auxiliary bracket is arranged inside the main body framework. The tunnel vault formwork is supported through the supporting frame, and a worker can stand on the operation platform to maintain the tunnel vault; the supporting frame is convenient to assemble and disassemble and can be recycled; meanwhile, the operation platform can be moved to any working place by means of the bottom walking mechanism, operation is convenient and fast, the labor intensity of workers is reduced, and the construction progress is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of engineering construction auxiliary frame, in particular to a kind of auxiliary support structure for tunnel maintenance. BACKGROUND

[0002] After tunnel lining construction is completed, cracks, voids or leakage defects may occur in tunnel lining during later operation, which need to be eliminated by later maintenance. At present, during the construction process of eliminating tunnel defects, temporary operation racks need to be erected to facilitate maintenance operations by workers standing on the operation racks. Since the temporary operation racks need to be completely removed after construction is completed and re-erected for next maintenance, it increases the workload of workers and auxiliary working time, delaying construction progress. SUMMARY

[0003] To solve the above problems, the utility model provides a kind of auxiliary support structure for tunnel maintenance.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An auxiliary support structure for tunnel maintenance includes an operation platform and a support frame for supporting a tunnel vault formwork, the operation platform is arranged inside the support frame, the operation platform includes a support column and a platform at the top of the support column, and the bottom of the support column is provided with a walking mechanism; the support frame includes a main framework and an auxiliary support, the main framework includes two rows of main columns and an arc-shaped arch frame at the top of the two rows of main columns, the top of the two rows of main columns is provided with a longitudinal connecting beam, the arc-shaped arch frame includes a plurality of arc-shaped beams and auxiliary support beams on both sides of the arc-shaped beams, the two ends of the arc-shaped beams are connected with the connecting beam respectively, the auxiliary support beams are two and are arranged on both sides of the arch waist of the arc-shaped beams in axial symmetry, and the auxiliary support is arranged on the inner side of the main framework.

[0006] Further, limit columns are arranged on the outer side of the main column, two adjacent main columns are connected by diagonal braces, the limit columns are horizontally arranged, one end of the limit column is fixed on the main column, and the other free end can abut against the tunnel side wall.

[0007] Further, the auxiliary support includes two rows of auxiliary columns and a full-frame at the top of the auxiliary columns, the full-frame is arranged below the arc-shaped arch frame, and the auxiliary columns are arranged on the inner side of the main columns.

[0008] Further, the auxiliary support further includes a plurality of auxiliary longitudinal beams, the plurality of auxiliary longitudinal beams are perpendicular to the arc-shaped beams and are arranged along the outer wall of the arc-shaped beams, the lateral rod of the full-frame extends to the outer side of the main framework through the main framework at both end portions of the lateral rod, and the auxiliary longitudinal beams are connected with the end of the lateral rod.

[0009] Further, the top of the main column is provided with a height adjusting structure between the connecting beam, the height adjusting structure comprises a lifting screw rod and a fixed sleeve, the fixed sleeve is a hollow pipe body with two ends blocked, the top of the fixed sleeve is provided with a top plate, the bottom of the fixed sleeve is provided with a bottom plate, the top plate is connected with the lower end supporting plate of the arc-shaped beam through bolts, the bottom surface of the bottom plate is fixedly provided with a nut, the lifting screw rod is threadedly connected with the nut, the upper end of the lifting screw rod extends into the fixed sleeve, the lower end of the lifting screw rod is connected with a backing plate, and the backing plate abuts against the top surface of the connecting beam.

[0010] Further, the connecting beam is a channel steel, the bottom of the connecting beam is fixed on the connecting plate, the connecting plate is connected with the cover plate of the top of the main column through bolts, the top of the connecting beam is symmetrically provided with a baffle on both sides, the cross section of the baffle is an inverted L shape, and the backing plate is arranged in the opening groove formed by the two side baffles and the top surface of the connecting beam.

[0011] Further, the middle part of the platform is provided with a crawling ladder, the walking mechanism comprises a plurality of walking wheels, the walking wheels are arranged at the bottom of the four surrounding support columns, and the walking wheels are provided with brakes.

[0012] Further, the walking wheels are arranged in two rows, and the two rows of walking wheels can move along the track on the ground.

[0013] Compared with the prior art, the technical progress achieved by the utility model lies in that:

[0014] The utility model discloses a tunnel maintenance auxiliary support structure, which comprises a main column, a connecting plate, a connecting beam, a platform, a walking mechanism and a support frame. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0016] In the drawings:

[0017] Figure 1 It is a tunnel maintenance auxiliary support structure that the utility model provides an embodiment, and the arrangement schematic view of the support frame in the tunnel is shown in the tunnel maintenance auxiliary support structure.

[0018] Figure 2 It is a tunnel maintenance auxiliary support structure that the utility model provides an embodiment, and the arrangement schematic view of the support frame in the tunnel is shown in the tunnel maintenance auxiliary support structure. Figure 1 It is a tunnel maintenance auxiliary support structure that the utility model provides an embodiment, and the arrangement schematic view of the support frame in the tunnel is shown in the tunnel maintenance auxiliary support structure.

[0019] Figure 3 This is a schematic diagram of the operating platform in an embodiment of the present utility model;

[0020] Figure 4 for Figure 2 Schematic diagram of the main framework

[0021] Figure 5 for Figure 4 The left view;

[0022] Figure 6 for Figure 4 Schematic diagram of the height adjustment structure;

[0023] Figure 7 This is a schematic diagram of the operating platform in another embodiment of the present invention;

[0024] In the picture:

[0025] 100-Operating platform, 101-Support column, 102-Platform, 103-Walking wheel, 104-Ladder, 105-Railway;

[0026] 200-Support frame; 210-Main frame; 211-Main column; 212-Arched arch frame; 2120-Arched beam; 2121-Auxiliary support beam; 213-Connecting beam; 214-Limiting column; 215-Connecting plate; 216-Cover plate; 217-Baffle; 218-Diagonal brace;

[0027] 220-Auxiliary support, 221-Auxiliary column, 222-Full-span scaffold, 223-Auxiliary longitudinal beam;

[0028] 230-Height adjustment structure, 231-Lifting screw, 232-Fixing sleeve, 233-Top plate, 234-Bottom plate, 235-Support plate, 236-Nut, 237-Pad. Detailed Implementation

[0029] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0030] like Figure 1As shown in the auxiliary support structure for tunnel maintenance, an operation platform 100 and a support frame 200 for supporting a tunnel 00 vault formwork are provided, the operation platform 100 is arranged inside the support frame 200, the operation platform 100 comprises a support column 101 and a platform 102 at the top of the support column 101, and a walking mechanism is arranged at the bottom of the support column 101; the support frame 200 comprises a main framework 210 and an auxiliary support 220, the main framework 210 comprises two rows of main columns 211 and an arc-shaped arch frame 212 at the top of the two rows of main columns 211, longitudinal connecting beams 213 are arranged at the top of the two rows of main columns 211, the arc-shaped arch frame 212 comprises a plurality of arc-shaped beams 2120 arranged at intervals and auxiliary support beams 2121 arranged on the two sides of the arc-shaped beams 2120, the two ends of the arc-shaped beams 2120 are connected with the connecting beams 213 respectively, the auxiliary support beams 2121 are two and are arranged on the two side haunches of the arc-shaped beams 2120 in axial symmetry, and the auxiliary support 220 is arranged on the inner side of the main framework 210. The tunnel vault formwork is supported by the main framework and the auxiliary support, and the workers stand on the operation platform below to operate, so that the tunnel vault defects can be processed.

[0031] In the specific embodiments of the utility model, as shown in Figure 2 , 4 , 5, the outer side of the main column 211 is provided with a limiting column 214, two adjacent main columns 211 are connected through inclined braces 218, the limiting column 214 is horizontally arranged, one end of the limiting column 214 is fixed on the main column 211, and the other free end can abut against the side wall of the tunnel 00, the limiting column can make the main framework adhere to the side wall of the tunnel on the two sides, and the stability of the whole support frame is ensured. The auxiliary support 220 comprises two rows of auxiliary columns 221 and a full-frame support 222 at the top of the two rows of auxiliary columns 221, the full-frame support 222 is arranged below the arc-shaped arch frame 212, and the auxiliary column 221 is arranged on the inner side of the main column 211. The auxiliary support can play an auxiliary supporting role on the main framework, simultaneously enhances the supporting force on the vault formwork, and ensures the stability of the formwork installation.

[0032] When being specifically manufactured, as shown in Figure 2 , the auxiliary support 220 further comprises a plurality of rows of auxiliary longitudinal beams 223, the plurality of rows of auxiliary longitudinal beams 223 are perpendicular to the arc-shaped beam 2120 and are arranged along the outer wall of the arc-shaped beam 2120; the lateral rod of the full-frame support 222 penetrates through the main framework 210 and extends to the outer side of the main framework 210, and the auxiliary longitudinal beam 223 is connected with the end of the lateral rod. The top auxiliary longitudinal beam is used for supporting the two sides of the formwork on the vault, and the formwork is ensured to adhere to the tunnel vault.

[0033] In order to facilitate the overall movement of the support frame, a roller with a brake can also be installed at the bottom of the main column and the auxiliary column, facilitating the overall movement of the support frame to different locations in the tunnel, and after being positioned, the brake is used to fix the roller, the operation platform is moved to the lower side of the support frame, and the staff can be conveniently maintained.

[0034] Further optimize the above scheme, as shown in Figure 4 、 6 The top of the main column 211 and the connecting beam 213 are provided with a height adjusting structure 230, the height adjusting structure 230 comprises a lifting screw 231 and a fixed sleeve 232, the fixed sleeve 232 is a hollow pipe body with both ends blocked, the upper end of the fixed sleeve 232 is provided with a top plate 233, and the lower end is provided with a bottom plate 234, the top plate 233 is connected with the lower end supporting plate 235 of the arc-shaped beam 2120 through bolts; the bottom surface of the bottom plate 234 is fixedly provided with a nut 236, the lifting screw 231 is in threaded cooperation with the nut 236, the upper end of the lifting screw 231 extends into the fixed sleeve 232, and the lower end of the lifting screw 231 is connected with a backing plate 237, and the backing plate 237 abuts against the top surface of the connecting beam 213. The cooperation length of the lifting screw and the fixed sleeve can be adjusted by the brake nut, and then the distance between the connecting beam and the arc-shaped beam is adjusted. By utilizing the height adjusting structure, the height of the support frame can be finely adjusted, so that the support frame can be matched with the arch top height of the tunnel, and the installation position of the formwork is more accurate.

[0035] Specifically, as shown in Figure 6 The connecting beam 213 is an I-shaped steel, the bottom of the connecting beam 213 is fixed on the connecting plate 215, and the connecting plate 215 is connected with the cover plate 216 at the top of the main column 211 through bolts; the top of the connecting beam 213 is symmetrically provided with a baffle 217 on both sides, the cross section of the baffle 217 is inverted L-shaped, and the backing plate 237 is arranged in the opening groove formed by the two side baffles 217 and the top surface of the connecting beam 213. By adopting the structure, the backing plate 237 at the lower end of the lifting screw 231 can be limited between the two side baffles 217, so that the lifting screw is prevented from being separated from the connecting beam during lifting.

[0036] As a preferred structure, as shown in Figure 3 The middle part of the platform 102 is provided with a ladder 104, so that the staff can go up and down the platform 102; the walking mechanism comprises a plurality of walking wheels 103, the walking wheels 103 are arranged at the bottom of the four peripheral support columns 101, and the walking wheels 103 are provided with brakes. When the operation platform is moved to the working position, the brake is used to fix the operation platform in position, the staff can go up and down the platform through the ladder, and the construction is facilitated.

[0037] In another embodiment of the utility model, as shown in Figure 7As shown, the walking wheels 103 are two rows, two rows of walking wheels 103 are connected through the connecting shaft, and two rows of walking wheels 103 can move along the track 105 on the ground. The operation platform with this structure can be moved and adjusted position more conveniently by means of the original track in the tunnel.

[0038] In summary, the utility model has the advantages of simple and compact structure, convenient and fast operation, the support frame is composed of main framework and auxiliary support, and the tunnel vault formwork is supported, and the maintenance operation can be carried out by the staff standing on the lower operation platform. The support frame used by the utility model is convenient to assemble and disassemble, and can be recycled. Meanwhile, the operation platform can be moved to any work site by means of the walking wheels, the staff can operate more conveniently along the ladder, the operation efficiency is improved, the support frame can be recycled, the labor intensity of the staff is greatly reduced, and the construction progress is accelerated.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the scope of protection of the utility model claims.

Claims

1. An auxiliary support structure for tunnel maintenance, characterized by: The utility model provides a tunnel arch formwork support frame, which comprises an operation platform and a support frame for supporting a tunnel arch formwork, the operation platform is arranged inside the support frame, the operation platform comprises support columns and a platform at the top of the support columns, the bottom of the support columns is provided with a walking mechanism, the support frame comprises a main framework and an auxiliary support frame, the main framework comprises two rows of main columns and an arc-shaped arch frame at the top of the two rows of main columns, the top of the two rows of main columns is provided with longitudinal connecting beams, the arc-shaped arch frame comprises a plurality of arc-shaped beams arranged at intervals and auxiliary support beams on both sides of the arc-shaped beams, both ends of the arc-shaped beams are connected with the connecting beams respectively, the auxiliary support beams are two and are arranged in an axial symmetry on both sides of the waist of the arc-shaped beams, and the auxiliary support frame is arranged on the inner side of the main framework.

2. The auxiliary support structure for tunnel maintenance according to claim 1, characterized in that: The outer side of the main column is provided with a limiting column, two adjacent main columns are connected through a diagonal brace, the limiting column is horizontally arranged, one end of the limiting column is fixed on the main column, and the other free end can abut against the side wall of the tunnel.

3. The auxiliary support structure for tunnel maintenance according to claim 1, wherein: The auxiliary support frame comprises two rows of auxiliary columns and a full-frame scaffold at the top of the two rows of auxiliary columns, the full-frame scaffold is arranged below the arc-shaped arch frame, and the auxiliary columns are arranged on the inner side of the main columns.

4. The auxiliary support structure for tunnel maintenance according to claim 3, wherein: The auxiliary support frame further comprises a plurality of rows of auxiliary longitudinal beams, the plurality of rows of auxiliary longitudinal beams are perpendicular to the arc-shaped beams and are arranged along the outer wall of the arc-shaped beams, the ends of the lateral rods of the full-frame scaffold pass through the main framework and extend to the outer side of the main framework, and the auxiliary longitudinal beams are connected with the ends of the lateral rods.

5. The auxiliary support structure for tunnel maintenance according to claim 1, wherein: Height adjusting structures are arranged between the top of the main column and the connecting beam, the height adjusting structures comprise lifting screws and fixed sleeves, the fixed sleeve is a hollow pipe body with both ends blocked, the upper end of the fixed sleeve is provided with a top plate, the lower end of the fixed sleeve is provided with a bottom plate, the top plate is connected with the lower end supporting plate of the arc-shaped beam through bolts, the bottom surface of the bottom plate is fixedly provided with a nut, the lifting screw is in threaded connection with the nut, the upper end of the lifting screw extends into the fixed sleeve, the lower end of the lifting screw is connected with a backing plate, and the backing plate abuts against the top surface of the connecting beam.

6. A supplementary support structure for tunnel maintenance according to claim 5, characterized in that: The connecting beam is a channel steel, the bottom of the connecting beam is fixed on a connecting plate, the connecting plate is connected with the cover plate at the top of the main column through bolts, the top of the connecting beam is symmetrically provided with baffle plates on both sides, the cross section of the baffle plate is in an inverted L shape, and the backing plate is arranged in an opening groove formed by the two side baffle plates and the top surface of the connecting beam.

7. A supplementary support structure for tunnel maintenance according to any one of claims 1-6, characterized in that: A crawling ladder is arranged in the middle of the platform, the walking mechanism comprises a plurality of walking wheels, the walking wheels are arranged at the bottom of the support columns around, and the walking wheels are provided with brakes.

8. The auxiliary support structure for tunnel maintenance according to claim 7, characterized in that: The walking wheels are arranged in two rows, and the two rows of walking wheels can move along the track on the ground.

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