Friction wheel steel rail supporting mechanism

Abstract

The utility model discloses a friction wheel steel rail supporting mechanism which comprises first type arc-shaped sleepers and second type arc-shaped sleepers, the first type arc-shaped sleepers and the second type arc-shaped sleepers are arranged at intervals in the longitudinal direction of a shield tunnel, and the two second type arc-shaped sleepers are arranged between every two first type arc-shaped sleepers. The first type arc-shaped sleeper is a first steel structure cavity with the bottom in an arc shape and the top in a plane shape, a connecting joint is welded to a bottom plate of the first steel structure cavity, and the connecting joint is arranged in an obliquely-downward mode. Longitudinal bolts are arranged in the connecting joints so as to achieve connection between the first type arc-shaped sleeper and the shield segment. The second type arc-shaped sleeper is a second steel structure cavity with the bottom in an arc shape and the top in a plane shape. The first type arc sleeper has the advantages that effective fixed connection of the first type arc sleeper is achieved by means of the longitudinal bolts and the connecting joints, and stable supporting of a steel rail and a friction wheel rail is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a friction wheel rail supporting mechanism. Background Art

[0002] With the recent advancement of shield tunneling technology, tunnel diameters have gradually expanded from the 6-meter range of conventional subway tunnels to larger and smaller diameters. Shield tunnel construction with small diameters and steep slopes is increasing. Tunnels in areas such as coal mines, water storage facilities, oil and gas pipelines, and utility corridors have slopes exceeding 70‰. This presents a significant challenge for transporting materials inside and outside the tunnel during construction.

[0003] For tunnels with a slope of more than 50‰, conventional tunnel traction locomotives are difficult to operate safely. One solution is to use a dual-power traction locomotive with a drive unit, combined with a three-track track to complete the material transportation task inside and outside the tunnel. The so-called three-track track refers to an I-rail for friction wheels set between two conventional steel rails. The I-rail can generate power for the friction wheels and generate friction braking when clamped. Therefore, there are high requirements for the support of the above rail system. Currently, in shield tunnels, for example, patent CN116695493A discloses a track structure in which the support member used for the central drive rail is relatively high, and the center of the sleeper is concave. There is also a lack of effective connection between the shield tunnel and the track, which poses a great challenge to the stability of the track.

[0004] Based on this, those skilled in the art are in urgent need of a friction wheel rail supporting mechanism that can provide high stability. Summary of the Invention

[0005] The purpose of the utility model is to provide a friction wheel rail support mechanism based on the above-mentioned deficiencies of the prior art. The friction wheel rail support mechanism arranges a first type of curved sleeper and a second type of curved sleeper at intervals along the longitudinal direction of the shield tunnel, and uses longitudinal bolts and connecting joints to achieve effective fixed connection of the first type of curved sleeper, thereby achieving stable support for the rail and the friction wheel rail.

[0006] The purpose of this utility model is achieved by the following technical solutions:

[0007] A friction wheel rail support mechanism, characterized in that the friction wheel rail support mechanism includes a first type of curved sleeper and a second type of curved sleeper arranged at intervals along the longitudinal direction of a shield tunnel, with two second type of curved sleepers arranged between every two first type of curved sleepers; the first type of curved sleeper is a first steel structure cavity with an arc-shaped bottom and a flat top, a connecting joint is welded on the bottom plate of the first steel structure cavity, the connecting joint is in an oblique downward setting posture, and a longitudinal bolt is arranged in the connecting joint to achieve the connection between the first type of curved sleeper and the shield segment; the second type of curved sleeper is a second steel structure cavity with an arc-shaped bottom and a flat top.

[0008] Two steel rails and a central friction wheel rail are arranged on the top surfaces of the first type curved rail sleeper and the second type curved rail sleeper. The friction wheel rail is arranged on the top surfaces of the first type curved rail sleeper and the second type curved rail sleeper through H-shaped steel pads.

[0009] The first steel structure cavity is enclosed by an arc-shaped bottom plate, side plates arranged on both sides of the arc-shaped bottom plate, and a flat top plate erected on the top of the side plates on both sides. Four spaced-apart stiffening plates are also arranged between the flat top plate and the arc-shaped bottom plate, two of which are arranged directly below the two wing plates of the H-shaped steel.

[0010] The second steel structure cavity is enclosed by an arc-shaped bottom plate, side plates arranged on both sides of the arc-shaped bottom plate, and a flat top plate erected on the top of the side plates on both sides. Three spaced-apart stiffening plates are also arranged between the flat top plate and the arc-shaped bottom plate.

[0011] The main body of the connecting joint is a triangular steel plate, the head of the triangular steel plate is provided with a notch, the screw portion of the longitudinal bolt passes through the notch and the end nut of the longitudinal bolt is limited by the triangular steel plate.

[0012] The advantages of the utility model are: simple structure, quick installation, by arranging the first type of curved sleepers and the second type of curved sleepers at intervals along the longitudinal direction of the shield tunnel, and by means of longitudinal bolts and connecting joints, the first type of curved sleepers are effectively fixed and connected, thereby obtaining stable support for the steel rails and friction wheel rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a plan view of the friction wheel rail support mechanism of the present invention;

[0014] Figure 2 This is a side view of the first type of curved sleeper in the present utility model;

[0015] Figure 3 For this utility model Figure 2Longitudinal section view of the center position of the first type of curved sleeper

[0016] Figure 4 It is a side view of the second type of curved sleeper in the utility model. DETAILED DESCRIPTION

[0017] The features of the present invention and other related features are further described in detail below with reference to the accompanying drawings and embodiments to facilitate understanding by those skilled in the art:

[0018] like Figure 1-4 The marks in the figure are: shield tunnel 1, first type curved sleeper 2, flat top plate 21, curved bottom plate 22, connecting joint 23, side plate 24, stiffening plate 25; second type curved sleeper 3, flat top plate 31, curved bottom plate 32, side plate 33, stiffening plate 34; rail 4, friction wheel rail 5, H-shaped steel 6.

[0019] Example: Figure 1-4 As shown, this embodiment specifically relates to a friction wheel rail support mechanism, which includes a first type curved rail sleeper 2 and a second type curved rail sleeper 3 arranged at intervals longitudinally along a shield tunnel 1, with two second type curved rail sleepers 3 arranged between every two first type curved rail sleepers 2. Two steel rails 4 and a central friction wheel rail 5 are arranged on the top surfaces of the first type curved rail sleepers 2 and the second type curved rail sleepers 3. The friction wheel rail 5 is padded on the top surfaces of the first type curved rail sleepers 2 and the second type curved rail sleepers 3 by H-shaped steel 6.

[0020] like Figure 1-4 As shown, the first type of curved rail sleeper 2 is a first steel structure cavity with an arc-shaped bottom and a flat top. Its arc-shaped bottom can be set in contact with the inverted arch surface of the shield tunnel 1. The first steel structure cavity is enclosed by an arc-shaped bottom plate 22, side plates 24 set on both sides of the arc-shaped bottom plate 22, and a flat top plate 21 erected on top of the side plates 24 on both sides. Four spaced stiffening plates 25 are also set between the flat top plate 21 and the arc-shaped bottom plate 22, of which two stiffening plates 25 are arranged directly below the two wing plates of the H-shaped steel 6. In addition, see Figure 2 and 3 A connector 23 is welded diagonally downward to the bottom of the curved base plate 22. The main body of connector 23 is a triangular steel plate with a notch cut into the head. The notch is positioned exactly where the bolt holes in the shield tunnel 1 segment are located. The shank of the longitudinal bolt passes through the notch, and the nut at the end of the longitudinal bolt is restrained by the triangular steel plate. The connection between connector 23 and the longitudinal bolt and the shield tunnel 1 segment secures the first type of curved sleeper 2.

[0021] like Figure 1-4As shown, the second type of curved rail sleeper 3 is a second steel structure cavity with an arc-shaped bottom and a flat top. Its arc-shaped bottom can be set in contact with the inverted arch surface of the shield tunnel 1. The second steel structure cavity is enclosed by an arc-shaped bottom plate 32, side plates 33 arranged on both sides of the arc-shaped bottom plate 32, and a flat top plate 31 erected on the top of the side plates 33 on both sides. Three spaced stiffening plates 34 are also arranged between the flat top plate 31 and the arc-shaped bottom plate 32.

[0022] like Figure 1-4 As shown, in this embodiment, the friction wheel rail 5 and the H-shaped steel 6 are fixed by welding to ensure that they will not shift, and the rails 4 on both sides are fixedly installed on both sides of the top of the arc-shaped sleeper by a combination of limiters and fasteners.

[0023] The advantages of the utility model are: simple structure, quick installation, by arranging the first type of curved sleepers and the second type of curved sleepers at intervals along the longitudinal direction of the shield tunnel, and by means of longitudinal bolts and connecting joints, the first type of curved sleepers are effectively fixed and connected, thereby obtaining stable support for the steel rails and friction wheel rails.

Claims

1. A friction wheel rail support mechanism, characterized in that The friction wheel rail support mechanism includes a first type of curved sleeper and a second type of curved sleeper arranged at intervals along the longitudinal direction of the shield tunnel, with two second type of curved sleepers arranged between every two first type of curved sleepers; the first type of curved sleeper is a first steel structure cavity with an arc-shaped bottom and a flat top, and a connecting joint is welded on the bottom plate of the first steel structure cavity, and the connecting joint is arranged in a downwardly inclined posture. The connection between the first type of curved sleeper and the shield segment is achieved by arranging longitudinal bolts in the connecting joint; the second type of curved sleeper is a second steel structure cavity with an arc-shaped bottom and a flat top.

2. A friction wheel rail support mechanism according to claim 1, characterized in that Two steel rails and a central friction wheel rail are arranged on the top surfaces of the first type curved rail sleeper and the second type curved rail sleeper. The friction wheel rail is arranged on the top surfaces of the first type curved rail sleeper and the second type curved rail sleeper through H-shaped steel pads.

3. A friction wheel rail support mechanism according to claim 2, characterized in that The first steel structure cavity is enclosed by an arc-shaped bottom plate, side plates arranged on both sides of the arc-shaped bottom plate, and a flat top plate erected on the top of the side plates on both sides. Four spaced-apart stiffening plates are also arranged between the flat top plate and the arc-shaped bottom plate, two of which are arranged directly below the two wing plates of the H-shaped steel.

4. The friction wheel rail support mechanism according to claim 2, characterized in that The second steel structure cavity is enclosed by an arc-shaped bottom plate, side plates arranged on both sides of the arc-shaped bottom plate, and a flat top plate erected on the top of the side plates on both sides. Three spaced-apart stiffening plates are also arranged between the flat top plate and the arc-shaped bottom plate.

5. The friction wheel rail support mechanism according to claim 1, characterized in that The main body of the connecting joint is a triangular steel plate, the head of the triangular steel plate is provided with a notch, the screw portion of the longitudinal bolt passes through the notch and the end nut of the longitudinal bolt is limited by the triangular steel plate.

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