Tunneling support trolley with foldable platform

Abstract

The utility model discloses a tunnel excavation support trolley with foldable platform, including roof frame, two corresponding support side frames of roof frame both sides, the roof frame top is equipped with two layer side platform, the roof frame with support side frame is connected through inclined support, the roof frame bottom is provided with bottom support, support side frame is connected with folding platform through fixed hinge, and folding platform top is connected with roof frame through inclined cable wire, the utility model has the advantages of being convenient for tunnel excavation operation, easy to make and low cost.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station construction technology, and in particular to a tunnel excavation support trolley with a foldable platform. Background Technology

[0002] Currently, my country has numerous underground caverns in its transportation and water conservancy projects, and the New Austrian Tunneling Method (NATM) is widely used for excavation and support construction.

[0003] During the excavation and support phase, a tunnel excavation and support trolley was used on site for the operation.

[0004] To ensure that the bottom of the trolley is accessible for muck removal vehicles and to facilitate the forward and backward movement of the trolley, the middle span of the trolley is made larger during the construction of the excavation support trolley, with no other platform in the middle except for the top frame platform and the side frame platform.

[0005] When workers are excavating blasting holes at the working face, due to the lack of a working platform in the middle, the middle slotting holes and auxiliary holes need to be drilled with the help of other equipment or platforms. During the support stage, the YT-28 hand drill is often used for drilling the side wall anchor bolt holes. Due to the limited space on the side frame platform, there is no support platform after the outriggers of the hand drill are extended, making it difficult to control the drilling angle of the side wall anchor bolt holes. Other equipment or platforms are needed for drilling. All of these problems increase the equipment costs for tunnel construction. In addition, when other equipment or platforms arrive, the excavation and support trolley needs to be moved, which increases the time required for a single cycle of excavation and support operations, increases construction costs, and is not conducive to schedule control. Utility Model Content

[0006] The purpose of this invention is to provide a tunnel excavation support trolley with a foldable platform. This invention has the advantages of being beneficial for tunnel excavation operations, easy to manufacture, and low in cost.

[0007] The technical solution of this utility model is as follows: a tunnel excavation support trolley with a foldable platform, including a top frame and two supporting side frames correspondingly arranged on both sides of the top frame; the top of the top frame is provided with a two-layer side platform; the top frame and the supporting side frames are connected by diagonal supports; a bottom support is provided at the bottom of the top frame; the supporting side frames are connected to the foldable platform by fixed hinges, and the top of the foldable platform is connected to the top frame by diagonal steel wire ropes.

[0008] In the aforementioned tunnel excavation support trolley with a foldable platform, a second-level working platform and a third-level working platform are provided on the outer side of the support side frame; the third-level working platform is located above the corresponding second-level working platform; each of the second-level and third-level working platforms is equipped with a telescopic steel pipe.

[0009] In the aforementioned tunnel excavation support trolley with a foldable platform, the support side frame is equipped with a detachable protective railing on its adjacent side.

[0010] In the aforementioned tunnel excavation support trolley with a foldable platform, the foldable platform is a steel mesh.

[0011] Compared with the prior art, the trolley of this application includes a steel frame divided into a top frame and a supporting side frame. The top frame is equipped with a two-layer platform, and the supporting side frame is equipped with a two-layer working platform and a three-layer working platform on the side as a side platform. The end of the side platform is equipped with a telescopic steel pipe, which can extend the side platform to the rock surface. A foldable platform is installed at the same height as the bottom of the trolley on the side platform. The foldable platform is fixed to the supporting side frame with fixed hinges. The end of the foldable platform is equipped with a diagonal steel wire rope that is flexibly connected to the top frame. This application has the conditions for normal passage of bottom muck trucks, and can use the telescopic steel pipe at the end of the side platform to expand the side passage and working space; A folding platform with inclined steel wire ropes can be used for drilling blasting holes in the middle of the working face and anchor bolt holes on the side walls. This avoids the problem of having to add other drilling equipment or platforms due to the lack of a working platform in the middle. It has the advantages of being inexpensive, fast, and easy to manufacture and maintain. Therefore, this utility model has the advantages of being beneficial to tunnel excavation operations, easy to manufacture, and low in cost. Attached Figure Description

[0012] Figure 1 This is a front view of the present invention; Figure 2 This is a side view of the present invention.

[0013] The markings in the attached diagram are: 1-Top frame, 2-Supporting side frame, 3-Diagonal support, 4-Top frame second-level platform, 5-Bottom support, 6-Folding platform, 7-Second-level working platform, 8-Fixed hinge, 9-Diagonal steel wire rope, 10-Third-level working platform, 12-Extendable steel pipe, 13-Guard railing. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0015] Example: A tunnel excavation support trolley with a foldable platform, such as... Figure 1 and 2As shown, it includes a top frame 1 and two supporting side frames 2 corresponding to each other on both sides of the top frame 1; the top of the top frame 1 is provided with a two-layer side platform 4; the top frame 1 and the supporting side frames 2 are connected by diagonal supports 3; the bottom of the top frame 1 is provided with a base support 5; the supporting side frames 2 are connected to a folding platform 6 by a fixed hinge 8, and the top of the folding platform 6 is connected to the top frame 1 by a diagonal steel wire rope 9.

[0016] The outer side of the support frame 2 is provided with a second-level working platform 7 and a third-level working platform 10; the third-level working platform 10 is located above the corresponding second-level working platform 7; each of the second-level working platform 7 and the third-level working platform 10 is provided with a telescopic steel pipe 12; the second-level working platform 7 and the third-level working platform 10 serve as side platforms, and with the telescopic steel pipe 12, the side platforms can be extended to the rock surface, ensuring the passage width of the side platforms and the space required by the drilling equipment, avoiding the excessive width of the two sides of the trolley, which would cause the trolley to rub against the rock surface on both sides when it is pushed forward, increasing the difficulty and risk of pushing forward.

[0017] The folding platform 6 is designed to allow normal passage of muck removal vehicles at the bottom of the blasting vehicle. After muck removal is completed, the inclined steel wire rope 9 connected to the folding platform 6 is lowered to be level with the second-level working platform 7. The operators use this platform to drill blasting holes in the middle of the working face. The drilling is carried out on site according to the blasting design, ensuring the number and angle of the holes.

[0018] Meanwhile, during the construction of the sidewall anchor bolt holes, the drilling rig outriggers are adjusted at an angle using the folding platform 6, ensuring that the anchor bolt holes are perpendicular to the rock surface. This working platform, while ensuring that the bottom of the trolley allows passage for muck removal vehicles, reduces the need for secondary fabrication of a central drilling trolley or the purchase of a lifting platform for the central blasting holes and sidewall anchor bolt holes at the tunnel face. At the same time, the central folding platform 6 is easy to use, convenient to manufacture, and has low maintenance costs, reducing construction costs and improving the efficiency of tunnel excavation and support cycles.

[0019] The support side frame 2 is provided with a detachable protective railing 13 on its adjacent side.

[0020] The folding platform 6 is a steel mesh.

Claims

1. A tunneling jumbo with foldable platform, characterized in that: Includes a top frame (1) and two supporting side frames (2) corresponding to each other on both sides of the top frame (1); the top of the top frame (1) is provided with a two-layer side platform (4); the top frame (1) and the supporting side frames (2) are connected by diagonal supports (3); the bottom of the top frame (1) is provided with a base support (5); the supporting side frames (2) are connected to the folding platform (6) by fixed hinges (8), and the top of the folding platform (6) is connected to the top frame (1) by diagonal steel wire ropes (9).

2. A tunnel excavation jumbo with foldable platform according to claim 1, characterized in that: The outer side of the support frame (2) is provided with a second-level working platform (7) and a third-level working platform (10); the third-level working platform (10) is located above the corresponding second-level working platform (7); each of the second-level working platform (7) and the third-level working platform (10) is provided with a telescopic steel pipe (12).

3. The tunneling jumbo with foldable platform according to claim 1, characterized in that: The supporting side frame (2) is provided with a detachable protective railing (13) on the edge side.

4. The tunneling jumbo with foldable platform of claim 1, characterized in that: The folding platform (6) is a steel mesh.

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