Small-radius curve section shield segment splicing device

Abstract

The invention relates to the technical field of shield segment assembling, and particularly discloses a small-radius curved segment shield segment assembling device which comprises a shield tunneling machine, a segment assembling machine is installed at the tail of the shield tunneling machine and used for installing shield segments, and a filling device is installed at the position, between every two adjacent shield segments, of a bent segment of a tunnel. The filling device is located at a gap between the adjacent shield segments; the filling device comprises two base plates, the two base plates are hinged through a hinge, and an elastic buffer block is fixedly connected between the two base plates. According to the small-radius curve section shield segment assembling device, shield segments can be obliquely arranged by adjusting the angle between the two base plates, the shield segments can be conveniently assembled on the bending section of a tunnel, meanwhile, the impact force between the shield segments can be buffered through the elastic buffer blocks, and the shield segments can be conveniently assembled. And the side edges of the shield segment are prevented from being damaged due to mutual collision.

Description

Technical Field

[0001] The invention relates to the technical field of shield segment assembly, and in particular to a shield segment assembly device for a small radius curve segment. Background Art

[0002] With the vigorous development of national infrastructure, more and more tunnels are constructed by shield method in railways, highways and municipal engineering. Shield segments are the main assembly components of shield construction and the innermost barrier of the tunnel. They are responsible for resisting soil pressure, groundwater pressure and some special loads. The production of shield segments usually uses steel bars and high-strength impermeable concrete to ensure reliable bearing and waterproof performance. During the construction process, adjacent segments are fixed together by tightening screws to form a tunnel. However, for the construction of small radius curved tunnels, see Figure 6 As shown, when the tunnel turns, a straight section 100 and a curved section 200 are formed. When the shield segments are assembled in the curved section 200, there must be a gap 300 between two adjacent shield segments 700, which needs to be filled. The prior art usually directly uses cement mortar to fill the gap. However, in this treatment process, since there is no skeleton structure in the gap, the strength of the tunnel at this point will be lower than that at other places after the grouting is completed. In addition, during the splicing process, the shield segments are placed in the specified position by the assembling machine, and then the shield segments are pushed to the upper shield segment. During the pushing process, if the two shield segments are both set horizontally, the two sides of the shield segments are in contact when the two shield segments are in contact. However, when the shield segments are tilted, when the two shield segments are in contact, the side edges of one of the shield segments collide with the side of the other segment, which easily leads to damage to the side edges of the shield segments. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a small radius curved segment shield segment assembly device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A shield segment assembly device for a small radius curved section includes a shield machine, a segment assembly device is installed at the rear of the shield machine, and the segment assembly device is used to install shield segments. At the curved section of the tunnel, a filling device is installed between adjacent shield segments, and the filling device is located at the gap between adjacent shield segments.

[0006] The filling device comprises two base plates, which are hinged to each other through a hinge, and an elastic buffer block is fixedly connected between the two base plates.

[0007] Preferably, a slide groove is provided on one side of each base plate, a slider is slidably connected in the slide groove, and a reinforcement rod is fixedly connected between the two sliders.

[0008] Preferably, a grouting hole is provided at one end of the reinforcement rod, and a plurality of through holes penetrating the reinforcement rod are provided on the inner wall of the grouting hole.

[0009] Preferably, one end of the reinforcement rod is tapered.

[0010] Preferably, a mounting groove is provided in the slide groove, a locking plate is fixedly connected in the mounting groove, a plurality of protruding locking teeth are provided on one side of the locking plate, a plurality of teeth are provided on the slide block, and the teeth match the protruding locking teeth.

[0011] Preferably, an extrusion rod is fixedly connected to the turntable of the segment assembly machine, and an inclined surface is provided at one end of the extrusion rod. When the turntable rotates, the inclined surface contacts the reinforcement rod, thereby generating a thrust on the reinforcement rod.

[0012] Preferably, a telescopic grouting pipe is provided on the extrusion rod.

[0013] Beneficial effects of the present invention: A shield segment assembly device for a small radius curve section provided by the present invention can tilt the shield segments by adjusting the angle between the two base plates, thereby facilitating the assembly of the shield segments in the curved section of the tunnel; at the same time, the impact force between the shield segments can be buffered by elastic buffer blocks to prevent the side edges of the shield segments from being damaged due to mutual collision; the filling device as a whole acts as a skeleton structure, thereby enhancing the strength of the later grouting of the gaps between the shield segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a basic structural diagram of a small radius curved segment shield segment assembly device provided by the present invention;

[0015] Figure 2 yes Figure 1 The main view;

[0016] Figure 3 It is a basic structural diagram of the filling device;

[0017] Figure 4 yes Figure 3 Stereoscopic image of

[0018] Figure 5 It is the connection structure diagram of the shield segment and the filling device;

[0019] Figure 6 It is a structural schematic diagram of shield segment assembly in the prior art. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Example 1

[0022] like Figure 1-5 As shown, a small radius curve segment shield segment assembly device of this embodiment includes a shield machine 500, and a segment assembly machine 600 is installed at the rear of the shield machine 500. The segment assembly machine 600 is used to install shield segments 700. The segment assembly machine 600 is a prior art and will not be described in detail here.

[0023] At the curved section 200 of the tunnel, a filling device 4 is installed between adjacent shield segments 700, and the filling device 4 is located at the gap 300 between adjacent shield segments 700. The filling device 4 includes two base plates 41, which are hinged by a hinge 42, and an elastic buffer block 43 is fixedly connected between the two base plates 41.

[0024] During use, a connecting plate 40 is arranged on one side of each base plate 41, and each connecting plate 40 is connected to a shield segment. In this way, the filling device 4 is located between two shield segments, and the shield segments can be arranged tilted by adjusting the angle between the two base plates 41, which is convenient for assembling the shield segments in the curved section of the tunnel. At the same time, the elastic buffer block 43 can buffer the impact force between the shield segments to prevent the side edges of the shield segments from being damaged due to mutual collision.

[0025] As a preferred embodiment of the present invention, in order to facilitate the adjustment of the angle between the two base plates 41, a slide groove 44 is provided on one side of each base plate 41, a slider 45 is slidably connected in the slide groove 44, and a reinforcement rod 47 is fixedly connected between the two sliders 45. By pushing the reinforcement rod 47, the slider 45 slides in the slide groove, thereby changing the angle between the two base plates 41, and the reinforcement rod 47 can be inserted into the inner wall of the tunnel, so that the inner wall of the tunnel can be connected into a whole, and the strength is significantly improved. One end of the reinforcement rod 47 is tapered. This makes it convenient to insert the reinforcement rod 47 into the inner wall of the tunnel.

[0026] As a preferred embodiment of the present invention, a grouting hole 48 is provided at one end of the reinforcing rod 47, and a plurality of through holes penetrating the reinforcing rod 47 are provided on the inner wall of the grouting hole 48. In this way, during grouting, the slurry is directly connected to the inner wall of the tunnel, and the filling device 4 as a whole acts as a skeleton structure, which can enhance the strength of the later grouting of the gap 300 between the shield segments.

[0027] As a preferred embodiment of the present invention, a mounting groove is provided in the slide groove 44, a locking plate 46 is fixedly connected in the mounting groove, a plurality of protruding locking teeth 49 are provided on one side of the locking plate 46, and a plurality of teeth are provided on the slider 45, and the teeth match the protruding locking teeth 49. In this way, after the slider 45 moves forward, it can only move forward but not backward under the cooperation of the protruding locking teeth 49 and the teeth, so as to prevent the base plate from rotating due to the side pressure of the shield segment and prevent the angle between the two base plates from becoming smaller.

[0028] The rotating disk 2 of the segment assembly machine 600 is fixedly connected to the extrusion rod 3, and one end of the extrusion rod 3 is provided with an inclined surface 30. When the rotating disk 2 rotates, the inclined surface 30 contacts the reinforcement rod 47, thereby generating a thrust on the reinforcement rod 47, so that the reinforcement rod is inserted into the inner wall of the tunnel. The extrusion rod 3 can be replaced, and different extrusion rods are selected according to the curvature of the tunnel, which is suitable for the construction of tunnels with different radii. The extrusion rod 3 is provided with a telescopic grouting pipe 31. The telescopic grouting pipe 31 is conveniently connected to the grouting hole 48, so as to facilitate the grouting operation.

Claims

1. A shield segment assembly device for a small radius curve section, characterized in that: The invention comprises a shield machine (500), wherein a segment assembling machine (600) is installed at the rear of the shield machine (500), and the segment assembling machine (600) is used to install shield segments (700). At a curved section (200) of the tunnel, a filling device (4) is installed between adjacent shield segments (700), and the filling device (4) is located at a gap (300) between adjacent shield segments (700); The filling device (4) comprises two base plates (41), the two base plates (41) are hingedly connected via a hinge (42), and an elastic buffer block (43) is fixedly connected between the two base plates (41).

2. The small radius curve segment shield segment assembly device according to claim 1, characterized in that: A sliding groove (44) is provided on one side of each base plate (41), a sliding block (45) is slidably connected in the sliding groove (44), and a reinforcing rod (47) is fixedly connected between the two sliding blocks (45).

3. The small radius curve segment shield segment assembly device according to claim 2 is characterized by: A grouting hole (48) is provided at one end of the reinforcement rod (47), and a plurality of through holes penetrating the reinforcement rod (47) are provided on the inner wall of the grouting hole (48).

4. The small radius curve segment shield segment assembly device according to claim 2 is characterized by: One end of the reinforcement rod (47) is tapered.

5. The small radius curve segment shield segment assembly device according to claim 2, characterized in that: The slide groove (44) is provided with a mounting groove, a locking plate (46) is fixedly connected in the mounting groove, a plurality of protruding locking teeth (49) are arranged on one side of the locking plate (46), and a plurality of teeth are arranged on the slider (45), and the teeth match the protruding locking teeth (49).

6. The small radius curve segment shield segment assembly device according to claim 3 is characterized by: The rotating disk (2) of the pipe segment assembly machine (600) is fixedly connected to an extrusion rod (3), one end of which is provided with an inclined surface (30). When the rotating disk (2) rotates, the inclined surface (30) contacts the reinforcement rod (47), thereby generating a thrust on the reinforcement rod (47).

7. The small radius curve segment shield segment assembly device according to claim 6, characterized in that: The extrusion rod (3) is provided with a telescopic grouting pipe (31).

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