Transport vehicle for large-diameter pipelines in small-section tunnel

Abstract

A transport vehicle for a large-diameter pipeline in a small-section tunnel comprises a vehicle frame, universal wheels and a direction control rod are arranged at the front end of the bottom of the vehicle frame, a fixed pulley is installed at the rear end of the vehicle frame, notches are fixed to the front side and the rear side of the top end of the vehicle frame respectively, wooden wedges are placed in the notches, and the wooden wedges limit and support the pipeline; and hanging rings are fixed on two sides between the front and rear notches. According to the transport vehicle for the large-diameter pipelines in the small-section tunnel, stable transportation of the large-diameter pipelines can be achieved.

Description

Technical Field

[0001] The utility model relates to a pipeline transport vehicle, in particular to a large-diameter pipeline transport vehicle in a small-section tunnel. Background Art

[0002] When laying large-diameter pipelines (the diameter of large-diameter pipelines is 1.050m) in small-section tunnels (for example, the diameter of the small-section tunnel of the Wenzhou Dongtou Water Diversion Project is 3.0m. At the same time, according to the "Construction Specifications for Underground Excavation of Hydraulic Structures" SL378-2007, the area of ​​10~30m² or the span of 3.0~5.5m is a small-section tunnel.), the common construction method is to weld the pipeline outside the tunnel, and use a crane to lift the pipeline onto a pipeline support vehicle for transportation in the tunnel. Existing transport support vehicles usually have the following problems when transporting in the tunnel: 1) In a small-section tunnel, the transportation direction of the pipeline is difficult to control, and it is difficult to correct the deviation; 2) The pipeline is unstable during transportation and is prone to slipping, causing safety hazards. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a large-diameter pipeline transport vehicle in a small-section tunnel, which has good stability, easy direction control, and is safer and more efficient.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A large-diameter pipeline transport vehicle in a small-section tunnel comprises a frame, a universal wheel and a direction control lever are arranged at the front end of the bottom of the frame, a fixed pulley is installed at the rear end of the frame, slots are respectively fixed on both sides of the front and rear ends of the top of the frame, wooden wedges are placed in the slots, and the wooden wedges provide position-limiting support for the pipeline; and lifting rings are fixed on both sides between the front and rear slots.

[0006] The slots on both sides are arranged in mirror symmetry, and each slot includes left and right side panels, the outer sides of the two side panels are connected to the back panel, and the bottom ends of the two side panels are connected to the bottom panel.

[0007] The side panels and wooden wedges are all triangular prism structures.

[0008] The utility model provides a large-diameter pipeline transport vehicle in a small-section tunnel, which has the following technical effects:

[0009] 1) By installing a set of fixed pulleys at the rear end of the frame and a set of universal wheels at the front end of the frame, and the wheel frame of the universal wheel is connected with a direction control rod, during the pipeline transportation process, when the forklift pushes the pipeline forward from the back, the direction of the universal wheel is controlled by manually controlling the direction control rod at the front end to control the direction of the pipeline transportation, so as to realize flexible deviation correction and adjustment of the pipeline in a small-section tunnel.

[0010] 2) By leaving four notches for placing wooden wedges on the upper part of the trolley, before hanging the pipeline on the trolley, placing triangular wooden wedges in the notches can increase the stability of the pipeline. The wooden wedges can prevent the trolley from causing collision damage to the pipeline surface. At the same time, a set of lifting rings are reserved on the upper part of the bracket. The lifting rings are used to tie and fix the pipeline to the trolley with ropes during transportation, thereby providing stability during pipeline transportation.

[0011] 3) The pipeline transport vehicle in this application adopts a frame structure, which is relatively small in size compared with existing mature transport vehicles. When the large-diameter pipeline is located in the center of the tunnel, the space reserved on one side of the tunnel can still be used for the transport vehicle to pass through, which is convenient for the pipeline transport vehicle crane to continue to repeatedly transport large-diameter pipelines in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 This is a structural schematic diagram of the utility model (the first pipeline transport vehicle).

[0014] Figure 2 It is a structural schematic diagram of the notch in the utility model.

[0015] Figure 3 It is a structural schematic diagram of the utility model (the second pipeline transport vehicle).

[0016] Figure 4 It is a schematic diagram of the working state of the utility model.

[0017] Figure 5 for Figure 4 Right view of .

[0018] In the figure: frame 1, universal wheel 2, direction control rod 3, fixed pulley 4, notch 5, lifting ring 6, side plate 5.1, back plate 5.2, bottom plate 5.3, tunnel 6, forklift 7, pipe 8, wooden wedge 9. DETAILED DESCRIPTION

[0019] like Figure 1-3 As shown, a large-diameter pipeline transport vehicle in a small-section tunnel includes a frame 1. The frame 1 is welded into a frame structure using angle steels. A universal wheel 2 is provided at the front end of the bottom of the frame 1, and a fixed pulley 4 is installed at the rear end of the frame 1. The fixed pulley 4 and the universal wheel 2 together form a pulley to facilitate the movement of the frame 1.

[0020] The top of the frame 1 is fixed with notches 5 on both sides, which are arranged mirror-symmetrically. Wooden wedges are placed in the notches 5. The wooden wedges are triangular columns, which can limit the position of the pipes to prevent them from rolling and falling, and ensure stability. Hanging rings 6 are fixed on both sides between the front and rear notches 5. The connecting rope passes through the hanging rings 6 to tie the pipes to the frame 1.

[0021] Each slot 5 includes left and right side panels 5.1, the side panels 5.1 are arranged at intervals, the outer sides of the side panels 5.1 are connected to the back panel 5.2, and the bottom ends of the side panels 5.1 are connected to the bottom panel 5.3. The side panels 5.1 are triangular plates, and the slot formed is a triangular prism. The wooden wedges inserted are triangular prisms matching with the triangular prisms. The triangular prism structure can limit the pipe, and the wooden wedges themselves can also avoid collision with the pipe to scratch and damage.

[0022] The pipeline transport vehicle in the present application is divided into a first pipeline transport vehicle and a second pipeline transport vehicle, wherein a direction control rod 3 is fixed on the wheel frame of the universal wheel 2 of the first pipeline transport vehicle, and the direction control rod 3 is used to manually adjust and control the direction of the universal wheel 2 to facilitate deviation correction. The second pipeline transport vehicle does not have a direction control rod 3, and only supports the pipeline 8.

[0023] Working principle and process:

[0024] like Figure 4-5 As shown, the pipeline 8 in the present application is a steel pipeline with a pipeline diameter of 1.02 m. A 12-meter pipeline is pre-assembled outside the tunnel and extended to 24 m.

[0025] Three groups of pipeline conveying vehicles are pre-arranged at a distance of 8 meters and placed at the entrance of tunnel 6. Pipe 8 is placed on the three groups of pipeline conveying vehicles by a crane. Flexible wooden wedges are placed on the upper part of the pipeline conveying vehicles that contacts the pipeline 4 to avoid damage to the pipeline 8 caused by impact.

[0026] The pipeline conveying vehicles here are divided into two types, namely the first pipeline conveying vehicle (one group) with controllable direction at the front end of the pipeline and the second pipeline conveying vehicle (two groups) in the middle of the pipeline. The pulleys of the first pipeline conveying vehicle are a combination of universal wheels and fixed wheels. One group connected to the direction control rod 1.3 is a universal wheel (front end), and the direction of the pipeline can be adjusted by manually adjusting the direction control rod 1.3; the other group is a fixed pulley group (rear end). The second pipeline conveying vehicle is also a combination of fixed wheels and universal wheels. The front group is a fixed wheel and the rear group is a universal wheel. In this way, the pipeline can be fine-tuned during the jacking process. On the other hand, the combination of fixed pulleys and universal wheels can prevent the pipeline from being greatly offset.

[0027] The reason why the front group of the second pipeline transport vehicle is a fixed wheel and the rear group is a universal wheel: the pipeline adjustment direction is mainly adjusted by the frontmost direction control rod 1.3. Therefore, the front end is also the primary end for controlling the direction. At the same time, it is also necessary to avoid excessive deviation of the front end direction during the adjustment process. Therefore, the front end of the second pipeline transport vehicle is a fixed wheel and the rear end is a universal wheel. If the front end of the second pipeline transport vehicle is a universal wheel and the rear end is a fixed wheel, although it will make it easier to adjust the direction of the pipeline, it will also increase the insecurity of the pipeline, making it more likely to deviate, and the difficulty of manually controlling the direction of the pipeline will also increase.

[0028] The pipeline transport vehicle in the present invention has been subjected to many demonstration tests. By adopting a combination of directional pulleys and universal wheels and reasonably setting the directions of the front and rear wheels of the first pipeline transport vehicle and the second pipeline transport vehicle, relatively stable jacking transportation of the pipeline can be achieved. If a single directional pulley is used, it is difficult to correct the deviation of the pipeline. If universal wheels are used, the stability control of the pipeline is poor due to the large dead weight of the pipeline. By adopting a combined arrangement, the stability of the pipeline during the jacking process can be better achieved.

[0029] like Figure 4 As shown, the end of the pipeline is slowly pushed forward by a forklift 7, and the part of the forklift 7 that directly contacts the pipeline 8 is made of flexible materials such as rubber or wood. The head end (front end) of the pipeline 8 is controlled by a manual control direction control rod 1.3 to control the forward direction of the pipeline 8 so that it is pushed forward according to the established pipeline.

Claims

1. A large diameter pipeline transport vehicle in a small cross-section tunnel, characterized by: The vehicle frame (1) comprises a universal wheel (2) and a direction control rod (3) at the bottom front end of the vehicle frame (1), a fixed pulley (4) is installed at the rear end of the vehicle frame (1), notches (5) are respectively fixed on both sides of the front and rear ends of the top end of the vehicle frame (1), wooden wedges are placed in the notches (5), and the wooden wedges support the pipe in a limited position; and lifting rings (6) are fixed on both sides between the front and rear notches (5).

2. A large-diameter pipeline transport vehicle in a small-section tunnel according to claim 1, characterized in that: The slots (5) on both sides are arranged in mirror symmetry, and each slot (5) comprises left and right side panels (5.1), the outer sides of the two side panels (5.1) are connected to the back panel (5.2), and the bottom ends of the two side panels (5.1) are connected to the bottom panel (5.3).

3. A large-diameter pipeline transport vehicle in a small-section tunnel according to claim 2, characterized in that: The side panels (5.1) and the wooden wedges are all triangular prism structures.

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