TBM ultra-long inclined shaft steel pipe transport trolley

Abstract

The utility model discloses a TBM (Tunnel Boring Machine) super-long inclined shaft steel pipe transportation trolley which comprises two supporting beams which are arranged in parallel, four groups of trolley wheels are respectively arranged on the bottom surfaces of the end parts of the two supporting beams, and the vertical center lines of the supporting beams and the trolley wheels are arranged along the radial direction of a circular inclined shaft and are matched with a track; a plurality of connecting supports are fixedly connected between the bottoms of the two supporting beams at intervals, and arc supporting plates matched with the arc faces of the steel pipes are further connected between the two supporting beams at intervals. The supporting beams on the two sides of the trolley and the trolley wheels are installed in the direction of the circle center of a tunnel in an inclined mode and are matched with the lower inclined rail, so that the trolley and the rail are better in stress, the safety of steel pipe transportation is improved, and meanwhile the trolley is better suitable for the circular section of a TBM inclined shaft. The upper portion of the steel pipe supporting plate of the trolley is arranged to be in an inwards-concave arc shape, the trolley can better adapt to the shape of the steel pipe, steel pipe transportation is more stable and safer, and meanwhile the height of the trolley can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering construction, in particular to the technical field of design of TBM inclined shaft steel pipe transportation device for pumped storage power station, specifically a TBM super-long inclined shaft steel pipe transportation trolley. Background Art

[0002] With the development and demand of energy storage technology, the construction scale of pumped storage power stations has been continuously expanded and the number has increased. In the construction of pumped storage power stations, inclined shafts and tunnels are usually required. In the existing construction technology, shield systems are often used to excavate inclined shafts and tunnels according to geological conditions.

[0003] Conventional inclined shaft water diversion steel pipe tunnels are "horseshoe-shaped" tunnels with a slightly wider and flat bottom, which is convenient for track layout; while the inclined shaft steel pipe tunnel excavated by the shield system has a circular cross-section. At the same time, the diameter difference between the transport steel pipe and the inclined shaft steel pipe tunnel is relatively small. Due to space limitations, the TBM inclined shaft cannot use a conventional track system. For this reason, a new track system is needed in combination with a suitable trolley to solve the problem of TBM ultra-long inclined shaft steel pipe transportation. Summary of the invention

[0004] The utility model discloses a TBM ultra-long inclined shaft steel pipe transportation trolley designed according to the transportation needs of the ultra-long inclined shaft tunnel formed by the existing shield system excavation. The utility model solves the technical problem that the circular cross-section space of the TBM ultra-long inclined shaft is limited and the trolley cannot be used to realize steel pipe transportation.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A TBM ultra-long inclined shaft steel pipe transport trolley, characterized in that: the transport trolley comprises two parallel arranged support beams, and a total of four sets of trolley wheels are respectively arranged on the bottom surfaces of the ends of the two support beams, and the vertical center lines of each support beam and each trolley wheel are arranged along the radial direction of the circular inclined shaft to cooperate with the track; a plurality of connecting brackets are fixedly connected at intervals between the bottoms of the two support beams, and arc support plates matching the arc surface of the steel pipe are also connected at intervals between the two support beams.

[0007] Furthermore, the front ends of the two parallel support beams are provided with traction lifting ears.

[0008] Furthermore, a bottom plate is provided between the two support beams at the bottom of the transport trolley.

[0009] Furthermore, the height of the bracket is lower than the arc surface of the arc support plate, and a longitudinal beam connects the middle parts of each bracket to form a reinforcement structure.

[0010] Furthermore, two ends of the arc support plate are respectively connected and fixed to the side surfaces of the two support beams.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The support beams on both sides of the trolley and the wheels of the trolley of the utility model are installed tilted toward the center of the tunnel, which is adapted to the equally tilted track below, so that the trolley and the track are better stressed, improving the safety of steel pipe transportation while also better adapting to the circular cross-section of the TBM inclined shaft. The top of the steel pipe support plate of the trolley is set in an inwardly concave arc, which can better adapt to the shape of the steel pipe, making the transportation of steel pipes more stable and safe, and can effectively reduce the height of the trolley. The bottom of the trolley is closed with a patterned steel plate, which can be used for the transportation of a small amount of materials, saving labor handling costs and transportation time, and improving work efficiency.

[0013] The utility model transport trolley has the advantages of safe transportation, low cost and better adaptability to the needs of transporting steel pipes in circular tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-section of the trolley and track structure of the utility model;

[0015] Figure 2 It is a top view schematic diagram of the trolley and track structure of the utility model.

[0016] Reference numerals in the figure: 1-track, 2-rebar, 3-crossbar, 4-steel pad, 5-support beam, 6-trolley wheel, 7-support plate, 8-bracket, 9-lifting ear, 10-bottom plate. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies identical or similar to the present invention do not exceed the scope of protection of the present invention.

[0018] Combined with the attached pictures.

[0019] As shown in the figure, the transport trolley of the utility model is used for transporting steel pipes in a super-long inclined shaft of a TBM, and the transport trolley runs on a track arranged at the bottom of the super-long inclined shaft of the TBM.

[0020] As shown in the figure, track 1 is made of 60mm×60mm solid square steel. The distance between the two tracks 1 is 2.1m, the joint positions are staggered by at least 1m, the track span deviation must be controlled within ±5mm, and the height difference between the two tracks must be controlled within 10mm to prevent overturning during steel pipe transportation. Two dowel bars 2 are used on both sides of the same section of a single track to weld and fix track 1 on the rock surface at the bottom of the inclined shaft. The dowel bar 2 is inserted into the rock with a depth of 20cm, exposed 3cm, and a spacing of 50cm. The top of the dowel bar 2 is ensured to be 3cm lower than the top surface of the track to prevent the dowel bar 2 from affecting the running of the trolley during steel pipe transportation and causing safety accidents. A cross bar 3 is arranged every 50cm along the length of track 1, and the cross bar 3 is made of ∠45 angle steel. The gap at the bottom of track 1 needs to be filled with a steel pad 4 made of Q235 steel plate to support track 1.

[0021] The transport trolley of this embodiment includes a support beam 5, a bracket 8, a support plate 7, and a bottom plate 10, wherein the support beam 5 is arranged tilted toward the center of the tunnel, and two trolley wheels 6 are respectively arranged in the front and rear along the length direction of the tunnel, and the trolley wheels 6 have the same tilt angle as the support beam 5; the bracket 8 is arranged between the two support beams 5 and welded to the support beam 5 at the lower position; the bottom plate 10 is made of a patterned steel plate, which is welded to the bracket 8 to close the bottom of the trolley. The support beam 5 is installed on the bracket 8, and the top surface is set to a concave arc surface, matching the shape of the steel pipe.

[0022] The support beam 5 is made of 16mm thick steel plate cut and welded, and two lifting ears 9 are welded to the front end of the support beam 5. The bracket is made of 18a I-beam, which is used as the frame structure of the bottom of the trolley and welded to the support beams 5 on both sides. The support plate 7 is made of 40mm thick steel plate, installed on the bracket 8 and welded to the support beams 5 on both sides. The bottom plate 10 is made of patterned steel plate, which closes the bottom of the trolley to facilitate the transportation of materials during the installation of steel pipes.

[0023] The bracket 8 is made of 18a I-beam. In this example, there are 7 transverse brackets and one longitudinal beam. After the support beam 5 is manufactured, the bracket 8 is welded to the two support beams 5.

[0024] A total of four support plates 7 are provided, which are evenly distributed on the bracket and welded to the bracket 8 and the support beam 5. The top of the support plate 7 is provided in a concave arc shape, and the arc is adapted to the shape of the steel pipe.

[0025] The bottom plate 10 is made of a patterned steel plate, which is laid on the bottom of the trolley and fixed to the bracket 4 by welding.

Claims

1. A TBM ultra-long inclined shaft steel pipe transport trolley, characterized by: The transport trolley includes two parallel supported beams, and a total of four groups of trolley wheels are respectively arranged on the bottom surfaces of the ends of the two supporting beams. The vertical center lines of each support beam and each trolley wheel are arranged radially along the circular inclined shaft and cooperate with the track; a plurality of connecting brackets are fixedly connected at intervals between the bottoms of the two supporting beams, and arc support plates matching the arc surface of the steel pipe are also connected at intervals between the two supporting beams.

2. The TBM ultra-long inclined shaft steel pipe transport trolley according to claim 1 is characterized in that: The front ends of the two parallel supporting beams are provided with traction lifting ears.

3. The TBM ultra-long inclined shaft steel pipe transport trolley according to claim 1 is characterized in that: A bottom plate is arranged between two supporting beams at the bottom of the transport trolley.

4. The TBM ultra-long inclined shaft steel pipe transport trolley according to claim 1 is characterized in that: The height of the bracket is lower than the arc surface of the arc support plate, and a longitudinal beam connects the middle parts of the brackets to form a reinforcement structure.

5. The TBM ultra-long inclined shaft steel pipe transport trolley according to claim 1 is characterized by: The two ends of the arc support plate are respectively connected and fixed to the side surfaces of the two support beams.

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