Portable device suitable for climbing operation in shield tunnel

Abstract

The utility model relates to a portable device suitable for climbing operation in a shield tunnel, which is arranged on the inner wall of the shield tunnel, and comprises two supporting legs supported on the inner wall of the shield tunnel, pedals hinged to the supporting legs, pedal shaft rods arranged between the supporting legs at intervals, one ends of a plurality of supporting rods connected with the supporting legs, and the other ends of the supporting rods connected with the pedal shaft rods. The other end of the supporting rod is connected with a supporting protrusion, the supporting protrusion is connected with a bolt hand hole in the inner wall of the shield tunnel, one side of the supporting leg is provided with a telescopic auxiliary supporting leg, the telescopic auxiliary supporting leg is connected with one end of a small supporting rod, and the other end of the small supporting rod is supported on the inner wall of the shield tunnel. Compared with the prior art, the utility model has the advantages of improving the stability of the operation in the shield tunnel and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel inspection and maintenance operation auxiliary, in particular to a portable device suitable for climbing operations inside a shield tunnel. Background Art

[0002] Damage to shield tunnel segments and lining water leakage are one of the key issues affecting the safe operation of urban rail transit, and therefore require long-term and reciprocating treatment. At present, in the inspection and temporary operation of shield tunnel lining defects, workers mostly use manual climbing or large external organizations to assist in the operation, which makes it difficult to balance the safety and convenience of operation. At the same time, with the increasing complexity of the transportation networks in major cities, it is inevitable that shield tunnels will be parallel or cross the site with ultra-small clearance in the process of densifying the original urban rail transit network. There are many risks and challenges in the construction process of such projects. Construction units and scientific research departments have a practical need to arrange monitoring elements in the shield tunnel lining segments. Common monitoring elements such as steel bar axial force gauges and segment earth pressure gauges can be pre-installed in the segment factory, while monitoring elements such as longitudinal seam opening need to be manually installed after the construction is completed, and are generally installed by technicians using the bolt hand holes on the inner wall of the shield tunnel lining. Safety accidents such as technicians falling during the installation process are prone to occur.

[0003] If climbing devices are considered for auxiliary operations, it is difficult for traditional ladders to determine stable support points on the inner wall of the curved lining, and it is difficult to meet the basic requirements for stable placement. At the same time, traditional ladders are heavy and large in size, making it inconvenient for technicians to carry them alone and operate quickly. Utility Model Content

[0004] The utility model aims to improve the stability of operations in a shield tunnel and provides a portable device suitable for climbing operations inside a shield tunnel.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A portable device suitable for climbing operations inside a shield tunnel, the device is arranged on the inner wall of the shield tunnel, and the device comprises:

[0007] Two legs supported on the inner wall of the shield tunnel, the legs are hingedly connected to pedals, pedal shafts are arranged at intervals between the legs, the legs are connected to one end of multiple support rods, the other end of the support rods is connected to support protrusions, the support protrusions are connected to bolt hand holes on the inner wall of the shield tunnel, and a retractable auxiliary leg is provided on one side of the leg, the retractable auxiliary leg is connected to one end of a small support rod, and the other end of the small support rod is supported on the inner wall of the shield tunnel.

[0008] Furthermore, one end of the telescopic auxiliary leg is arranged inside the leg, and a friction block and a handle are provided at the connection between the telescopic auxiliary leg and the leg. A part of the friction block is arranged on the groove on the outside of the leg, and the other part of the friction block is arranged on the groove on the outside of the telescopic auxiliary leg. The handle is arranged above the friction block, and the friction block contacts the cylindrical part of the handle.

[0009] Furthermore, the rotation axis of the cylindrical portion of the handle is offset from the axis of the cylinder, and the handle further comprises an adjustment plate connected to the outer side of the cylindrical portion.

[0010] Furthermore, the supporting protrusion includes a sleeve and a convex body, and the rotating shaft of the convex body is installed in the sleeve.

[0011] Furthermore, a portion of the convex body exposed outside the sleeve is provided with a connecting groove, and the connecting groove matches the shape of the bolt hand hole.

[0012] Furthermore, a rope loop is provided on the portion of the convex body exposed outside the sleeve.

[0013] Furthermore, the legs are hingedly connected to the support rods.

[0014] Furthermore, the retractable auxiliary supporting legs are hingedly connected to the small supporting rod.

[0015] Furthermore, the support rod and the support protrusion are hingedly connected.

[0016] Furthermore, the pedal shaft and the pedal are rigidly connected.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model is designed in combination with the structural characteristics of the inner wall of the shield tunnel lining, focusing on the auxiliary role of the bolt hand hole, and improving the work efficiency of technicians without affecting the safety of the shield tunnel structure. The utility model embeds the support protrusion into the bolt hand hole on the inner wall of the shield tunnel to achieve support, and then controls the extension and retraction of the retractable auxiliary support leg through the friction block and the handle, thereby improving the stability during operation in the shield tunnel. In addition, the support protrusion is rotated to adapt to bolt hand holes of different shapes, which reduces the difficulty and safety risks of workers in inspecting the internal structure of the shield tunnel and installing related equipment. It has the characteristics of safety, portability, and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the utility model when it is installed in a shield tunnel;

[0021] Figure 3 This is a schematic diagram of the supporting protrusion structure of this application;

[0022] Figure 4 This is a schematic diagram of the connection structure between the supporting leg and the retractable auxiliary supporting leg of the present application;

[0023] In the figure, 1. inner wall of shield tunnel; 2. support leg; 3. pedal; 4. support protrusion; 5. bolt hand hole; 21. support rod; 22. retractable auxiliary support leg; 23. small support rod; 24. friction block; 25. handle; 31. pedal shaft; 41. sleeve; 42. convex body; 43. rope loop. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] The utility model proposes a portable device suitable for climbing operations inside shield tunnels. Combined with the internal structure of the shield tunnel lining, a ladder is designed that can be stably supported by bolt hand holes, reduces safety risks, is easy for technicians to carry, and can improve work efficiency. The structural diagram of the device is shown in the figure below. Figure 1 The schematic diagram of the utility model when installed in a shield tunnel is as shown in Figure 2 shown.

[0028] The device is arranged on the inner wall 1 of the shield tunnel, and comprises:

[0029] It includes a leg 2 supported on the inner wall 1 of the shield tunnel and a pedal 3 hingedly connected to the leg 2, the leg 2 is hingedly connected to the support rod 21, a pedal shaft 31 is arranged between the legs 2, the bottom of the leg 2 is hingedly connected to the telescopic auxiliary leg 22, the telescopic auxiliary leg 22 is hingedly connected to the small support rod 23, the bottom of the small support rod 23 is hingedly connected to the support protrusion 4, a friction block 24 is arranged between the telescopic auxiliary leg 22 and the leg 2 to control the extension and retraction, a handle 25 is connected to the friction block 24, the bottom of the support rod 21 is hingedly connected to the support protrusion 4, the support protrusion 4 includes a sleeve 41 and a convex body 42, the convex body 42 can rotate around the sleeve 41, a rope loop 43 is arranged inside the convex body 42 to be sleeved on the bolt hand hole 5, and the pedal shaft 31 is rigidly connected to the pedal 3. The support leg 2 and the adjustable auxiliary support leg 22 can be controlled to extend and retract by the friction block 24 and the handle 25. The friction block 24 can be switched between the tight and relaxed states by turning the handle 25. When the friction block 24 is relaxed, the support leg 2 and the adjustable auxiliary support leg 22 can be freely adjusted. Otherwise, relative displacement is difficult to occur, which is suitable for the internal operation length of the shield tunnel of 1.8m to 2.5m. The convex body 42 in the support protrusion 4 is complementary to the shape of the shield tunnel segment bolt hand hole 5. The convex body 42 is provided with a concave bolt hand hole 5 shape. The support protrusion 4 can be integrally embedded in the bolt hand hole 5, and a rope loop 43 is provided to assist in the connection with the bolt hand hole 5. The shield tunnel lining segment bolt hand hole may be vertical or horizontal, so the convex body 42 can rotate around the sleeve 41, and the rotation angle can be selected from 90°, 180°, 270°, and 360° to adapt to different shield tunnel bolt hand holes 5. The rotation axis of the cylindrical portion of the handle 25 is offset from the axis of the cylinder, and the handle 25 further comprises an adjustment plate connected to the outer side of the cylindrical portion.

[0030] In the present invention, one end of the telescopic auxiliary leg 22 is arranged inside the leg 2, and a friction block 24 and a handle 25 are arranged at the connection between the telescopic auxiliary leg 22 and the leg 2, a part of the friction block 24 is arranged on the groove outside the leg 2, and another part of the friction block 24 is arranged on the groove outside the telescopic auxiliary leg 22, and the handle 25 is arranged above the friction block 24, and the friction block 24 contacts the cylindrical part of the handle 25. The part of the convex body 42 exposed outside the sleeve 41 is provided with a connecting groove, and the connecting groove matches the shape of the bolt hand hole 5.

[0031] The schematic diagram of the supporting protrusion structure is as follows Figure 3 The schematic diagram of the connection structure between the supporting leg and the retractable auxiliary supporting leg of the present application is shown in Figure 4 shown.

[0032] When the utility model is in operation, the support protrusion 4 connected to the support rod 21 is connected to the bolt hand hole 5 of the inner wall 1 of the shield tunnel, and a rope loop 43 is provided to assist in the connection with the bolt hand hole 5. The convex body 42 of the support protrusion 4 can be rotated to meet the bolt hand hole 5 in different directions. When the adjustment plate of the handle 25 is turned, the thicker part or the thinner part of the cylinder can be controlled to contact the friction block 24. When the thicker part of the cylinder contacts the friction block 24, the friction block 24 is squeezed and is in a tight state, and the connection between the leg 2 and the adjustable auxiliary leg 22 is locked, making it difficult for relative displacement to occur. When the thinner part contacts the friction block 24, the friction block 24 is in a relaxed state, and the leg 2 and the adjustable auxiliary leg 22 can be freely adjusted.

[0033] The adjustable auxiliary legs 22 can provide auxiliary support.

[0034] The utility model is designed in combination with the structural characteristics of the inner wall of the shield tunnel lining, and focuses on the auxiliary role of the bolt hand hole, thereby improving the working efficiency of technicians without affecting the safety of the shield tunnel structure. The utility model realizes support by embedding the supporting protrusions into the bolt hand holes on the inner wall of the shield tunnel, and secondly controls the extension and retraction of the retractable auxiliary legs by the friction blocks and the handles. In addition, the supporting protrusions are rotated to adapt to bolt hand holes of different shapes, thereby reducing the difficulty and safety risks of workers in inspecting the internal structure of the shield tunnel and installing related equipment, and has the characteristics of safety, portability, and applicability.

[0035] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A portable device suitable for climbing operations inside shield tunnels, It is characterized in that The device is arranged on the inner wall (1) of the shield tunnel, and comprises: Two legs (2) are supported on the inner wall (1) of a shield tunnel, the legs (2) are hingedly connected to a pedal (3), a pedal shaft rod (31) is arranged at intervals between the legs (2), the legs (2) are connected to one end of a plurality of support rods (21), the other end of the support rod (21) is connected to a support protrusion (4), the support protrusion (4) is connected to a bolt hand hole (5) on the inner wall (1) of the shield tunnel, and a retractable auxiliary leg (22) is provided on one side of the leg (2), the retractable auxiliary leg (22) is connected to one end of a small support rod (23), the other end of the small support rod (23) is supported on the inner wall (1) of the shield tunnel.

2. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that One end of the telescopic auxiliary leg (22) is arranged inside the leg (2); a friction block (24) and a handle (25) are arranged at the connection between the telescopic auxiliary leg (22) and the leg (2); a part of the friction block (24) is arranged on the groove outside the leg (2); another part of the friction block (24) is arranged on the groove outside the telescopic auxiliary leg (22); the handle (25) is arranged above the friction block (24); and the friction block (24) contacts the cylindrical part of the handle (25).

3. A portable device suitable for climbing operations inside a shield tunnel according to claim 2, It is characterized in that The rotation axis of the cylindrical portion of the handle (25) is offset from the axis of the cylinder, and the handle (25) further comprises an adjustment plate connected to the outer side of the cylindrical portion.

4. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that The supporting protrusion (4) comprises a sleeve (41) and a convex body (42), and the rotating shaft of the convex body (42) is installed in the sleeve (41).

5. A portable device suitable for climbing operations inside a shield tunnel according to claim 4, It is characterized in that The portion of the convex body (42) exposed outside the sleeve (41) is provided with a connecting groove, and the connecting groove matches the shape of the bolt hand hole (5).

6. A portable device suitable for climbing operations inside a shield tunnel according to claim 4, It is characterized in that The portion of the convex body (42) exposed outside the sleeve (41) is provided with a rope loop (43).

7. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that The supporting legs (2) and the supporting rod (21) are hingedly connected.

8. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that The telescopic auxiliary supporting leg (22) and the small supporting rod (23) are hingedly connected.

9. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that The support rod (21) and the support protrusion (4) are hingedly connected.

10. A portable device suitable for climbing operations inside a shield tunnel according to claim 1, It is characterized in that The pedal shaft (31) and the pedal (3) are rigidly connected.

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