Segment pulling and connecting device and segment system

Abstract

The utility model belongs to the technical field of shield construction, and discloses a duct piece pulling and connecting device and a duct piece system, which comprise a pulling and connecting plate, a pulling and connecting cable and a fastener. Each pulling and connecting plate is erected between every two adjacent pipe pieces, each pulling and connecting plate is provided with a bent part, a connecting groove is formed in the inner circumferential side of each pipe piece, an abutting face is arranged in each connecting groove, and the bent parts can stretch into the connecting grooves and abut against the abutting faces; the pulling and connecting cable is configured to be connected between two adjacent pipe pieces in series, a penetrating-out hole is formed in the bent part, and the two ends of the pulling and connecting cable penetrate out of the abutting-pressing faces of the two adjacent pipe pieces respectively; the fastener is detachably connected to the pulling cable, and the bent part can abut against the abutting face. The pulling and connecting plates, the pulling and connecting cables and the fasteners are matched with one another, every two adjacent pipe pieces are connected and fastened in a pulling mode, the conditions that the pipe pieces are staggered, or water leaks at the joints of the pipe pieces are prevented, the bent parts can stretch into the connecting grooves formed in the inner circumferential sides of the pipe pieces and are fully attached to the abutting faces under abutting of the fasteners, and pulling and connecting are firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a pipe segment pulling and connecting device and a pipe segment system. Background Art

[0002] During the shield tunneling receiving stage, the thrust is relatively small, resulting in the connection between the segment rings near the tunnel portal not being tight enough. Therefore, the last 10 segments need to be pulled and tightened to prevent misalignment, water leakage, etc. caused by looseness between the segments.

[0003] The connecting device in the prior art achieves the effect of connecting and tightening by cooperating with connecting steel sheets, bolts and prefabricated pipe segments. However, due to the arc-shaped structure of the pipe segments, the matching degree between the connecting steel sheets and the pipe segments is not high, resulting in the connecting steel sheets being unable to fully fit the inner wall of the pipe segments, which affects the connecting effect and occupies the internal space of the tunnel. Utility Model Content

[0004] The utility model aims to provide a pipe segment pulling and connecting device and a pipe segment system. The pulling and connecting device has a high degree of matching with the pipe segment and a good pulling and connecting effect.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The segment pulling device comprises:

[0007] A connecting plate is arranged between two adjacent pipe segments, and both ends of the connecting plate in the length direction are provided with bent portions. A connecting groove is provided on the inner circumference of the pipe segment, and a pressing surface is provided in the connecting groove. The bent portion can extend into the connecting groove and abut against the pressing surface.

[0008] A pull-connecting rope is configured to be connected in series between two adjacent pipe segments, the bent portion is provided with a through hole, and two ends of the pull-connecting rope respectively pass through the pressing surfaces of the two adjacent pipe segments and pass through the through hole;

[0009] A fastener, one pulling cable is configured with two fasteners, the fasteners are detachably connected to the pulling cable, and can press the bent portion against the pressing surface.

[0010] Preferably, both ends of the pulling rope in the length direction are provided with threaded sections, and the fastener can be screwed to the threaded sections.

[0011] Preferably, the pulling rope is arc-shaped, a series connection channel is provided inside the pipe segment, the series connection channel is connected to the connecting groove, and the pulling rope can pass through the series connection channel and abut against the inner wall of the series connection channel.

[0012] Preferably, the connecting plate is provided with two connecting grooves, and the pressing surface of each connecting groove faces one end of the other connecting groove and is connected to the inner wall of the pipe segment.

[0013] A segment system includes a segment ring group and a plurality of circumferential connecting devices, wherein the circumferential connecting device is the above-mentioned segment connecting device, the segment ring group is in the shape of a circular ring penetrating along a first direction, the segment ring group includes a plurality of segments connected end to end, and the segment connecting device is arranged at the joint between two adjacent segments.

[0014] Preferably, among the segments of the segment ring group, at least one segment is provided with two locking surfaces, and the locking surfaces are configured to abut against the adjacent segments, and along the first direction, the two locking surfaces are close to each other.

[0015] Preferably, a plurality of circumferential connecting devices are arranged at intervals along the extension direction of adjacent segment seams.

[0016] Preferably, it further comprises a plurality of longitudinal connecting devices, wherein the longitudinal connecting devices are the above-mentioned segment connecting devices, a plurality of segment ring groups are arranged at intervals along the first direction, and the longitudinal connecting devices are arranged at the joints of adjacent segment ring groups.

[0017] Preferably, a plurality of longitudinal connecting devices are provided along the extension direction of the seams of adjacent segment ring groups.

[0018] Preferably, on one of the segment ring groups, the joints between the segments can abut against the segments of another of the segment ring groups along the first direction.

[0019] Beneficial effects of the utility model:

[0020] The connecting plate, connecting cable and fasteners cooperate with each other to connect and tighten the two adjacent segments to prevent the segments from being misaligned or leaking at the joints. It has good stability and high safety. Bending parts are provided at both ends of the connecting plate. The bending parts can extend into the connecting grooves provided on the inner circumference of the segments and fully fit into the pressure surface under the pressure of the fasteners, making the connection between the segments more secure. After the shield construction is completed, the connecting plate is removed and the connecting cable does not need to be removed and can be left inside the segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the pull-connecting plate of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the pull-joint rope of the utility model;

[0023] Figure 3It is a structural schematic diagram of the pipe segment pulling and connecting device of the utility model;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0025] Figure 5 It is a structural schematic diagram of the segment ring group described in the utility model.

[0026] In the figure:

[0027] 100, pipe segment; 101, pressure surface; 102, series connection channel;

[0028] 200, segment ring assembly;

[0029] 1. Pull-on plate; 11. Bending portion; 110. Through hole;

[0030] 2. Pulling rope; 21. Threaded section;

[0031] 3. Fasteners. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] like Figure 1-Figure 4 As shown, the utility model provides a segment pulling device and a segment system for shield construction. The segment pulling device includes a pulling plate 1, a pulling cable 2 and a fastener 3. The pulling plate 1 is set between two adjacent segments 100, and both ends of the pulling plate 1 in the length direction are provided with a bent portion 11, and a connecting groove is provided on the inner circumference of the segment 100, and a pressing surface 101 is provided in the connecting groove. The bent portion 11 can extend into the connecting groove and abut against the pressing surface 101; the pulling cable 2 is configured to be serially connected between two adjacent segments 100, and a through hole 110 is provided on the bent portion 11. The two ends of the pulling cable 2 are respectively passed through the pressing surfaces 101 of the two adjacent segments 100 and pass through the through hole 110; one pulling cable 2 is provided with two fasteners 3, and the fastener 3 is detachably connected to the pulling cable 2, and can press the bent portion 11 against the pressing surface 101.

[0037] The connecting plate 1, the connecting rope 2 and the fastener 3 cooperate with each other to connect and fasten two adjacent pipe segments 100 to each other, thereby preventing the pipe segments 100 from being misaligned or leaking at the joints of the pipe segments 100. The connecting plate 1 has good stability and high safety. The connecting plate 1 is provided with bent portions 11 at both ends, which can extend into the connecting groove provided on the inner circumference of the pipe segment 100 and fully fit into the pressing surface 101 under the pressure of the fastener 3, thereby making the connection more secure. When the connecting plate 1 is removed, the connecting rope 2 does not need to be removed and can be left inside the pipe segment 100.

[0038] Specifically, both ends of the pulling rope 2 in the length direction are provided with threaded sections 21, and the fastener 3 can be screwed to the threaded sections 21. With the above arrangement, the fastener 3 can be connected to the pulling rope 2 by rotating the fastener 3, which is simple and convenient to operate.

[0039] In this embodiment, the connecting plate 1 can be formed by bending a steel plate, the connecting lock 2 is a steel bar or a steel cable commonly used in the art, and the fastener 3 is a high-strength nut commonly used in the art.

[0040] Specifically, the pull cable 2 is arc-shaped, and a serial connection channel 102 is provided inside the pipe segment 100. The serial connection channel 102 is connected to the connection groove, and the pull cable 2 can pass through the serial connection channel 102 and abut against the inner wall of the serial connection channel 102. In the above arrangement, the pull cable 2 is arranged in an arc shape, which can avoid local stress concentration, and the pull cable 2 can fit against the inner wall of the serial connection channel 102, and the friction between the two is used to increase the axial anchoring force of the pull cable 2.

[0041] Specifically, the connecting plate 1 is provided with two connecting grooves, and the pressing surface 101 of each connecting groove faces one end of the other connecting groove and is connected to the inner wall of the pipe segment 100 .

[0042] Combination Figure 5 The utility model also provides a segment system, which includes a segment ring group 200 and a plurality of circumferential pulling devices, the circumferential pulling devices are the segment pulling devices mentioned above, the segment ring group 200 is in a circular ring shape penetrating along the first direction, the segment ring group 200 includes a plurality of segments 100 connected end to end, and the segment pulling devices are arranged at the joints between two adjacent segments 100. With the above arrangement, the segments 100 of the segment ring group 200 are connected by the circumferential pulling devices, which has high stability and prevents misalignment and water leakage at the joints.

[0043] In this embodiment, one segment ring group 200 is provided with 6 segments 100. In other embodiments, the number can be adjusted to other numbers according to actual conditions, which is not limited here.

[0044] Specifically, among the segments 100 of the segment ring assembly 200, at least one segment 100 is provided with two locking surfaces, and the locking surfaces are configured to abut against the adjacent segments 100, and the two locking surfaces are close to each other along the first direction. The above-mentioned locking surfaces are provided so that the contact surfaces of the segments 100 on one segment ring assembly 200 can generate a squeezing force along the circumferential direction of the segment ring assembly 200, so that the connection between the segments 100 is more secure.

[0045] Specifically, a plurality of circumferential tensioning devices are arranged at intervals along the extending direction of the joints of adjacent segments 100. The above arrangement enables the segments 100 on a segment ring group 200 to be stressed evenly, making the connection between the segments 100 more secure.

[0046] Specifically, it is characterized in that it further comprises a plurality of longitudinal pulling devices, which are the above-mentioned segment pulling devices, and the segment ring groups 200 are provided with a plurality of them at intervals along the first direction, and the longitudinal pulling devices are provided at the joints of adjacent segment ring groups 200. In the above-mentioned arrangement, the segment ring groups 200 are provided with a plurality of them along the first direction, so that the first direction is the through direction of the segment system, and the segment ring groups 200 are connected to each other through the longitudinal pulling devices to improve the connection strength.

[0047] Specifically, a plurality of longitudinal pulling devices are provided along the extending direction of the joints of adjacent segment ring groups 200. The above arrangement enables two adjacent segment ring groups 200 to be subjected to uniform force.

[0048] Specifically, the joints between the segments 100 on one segment ring group 200 can abut against the segments 100 of another segment ring group 200 along the first direction. The above arrangement can improve the stability of the segment system and prevent the joints of multiple segments 100 from cracking at the same time.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. The segment pulling device is characterized by: include: A connecting plate (1) is arranged between two adjacent pipe segments (100), and both ends of the connecting plate (1) in the length direction are provided with bent portions (11). A connecting groove is provided on the inner circumference of the pipe segment (100), and a pressing surface (101) is provided in the connecting groove. The bent portion (11) can extend into the connecting groove and abut against the pressing surface (101); The pulling rope (2) is configured to be serially connected between two adjacent pipe segments (100), the bent portion (11) is provided with a through hole (110), and the two ends of the pulling rope (2) respectively pass through the pressing surfaces (101) of the two adjacent pipe segments (100) and pass through the through hole (110); A fastener (3), one pulling rope (2) is provided with two fasteners (3), the fasteners (3) are detachably connected to the pulling rope (2), and are capable of pressing the bent portion (11) against the pressing surface (101).

2. The segment pulling and connecting device according to claim 1, characterized in that: Both ends of the pulling rope (2) in the length direction are provided with threaded sections (21), and the fastener (3) can be screwed to the threaded sections (21).

3. The segment pulling and connecting device according to claim 1, characterized in that: The pulling rope (2) is arc-shaped, and a serial connection channel (102) is provided inside the pipe segment (100). The serial connection channel (102) is connected to the connecting groove, and the pulling rope (2) can pass through the serial connection channel (102) and abut against the inner wall of the serial connection channel (102).

4. The pipe segment pulling and connecting device according to any one of claims 1 to 3, characterized in that: The connecting plate (1) is provided with two connecting grooves, and the pressing surface (101) of each connecting groove faces one end of the other connecting groove and is connected to the inner wall of the pipe segment (100).

5. Segment system, characterized in that: It comprises a segment ring group (200) and a plurality of circumferential pulling devices, wherein the circumferential pulling devices are the segment pulling devices according to any one of claims 1 to 4, the segment ring group (200) is in the shape of a circular ring penetrating along a first direction, the segment ring group (200) comprises a plurality of segments (100) connected end to end, and the segment pulling devices are arranged at the joints between two adjacent segments (100).

6. The segment system according to claim 5, characterized in that: Among the segments (100) of the segment ring assembly (200), at least one segment (100) is provided with two locking surfaces, and the locking surfaces are configured to abut against adjacent segments (100), and along the first direction, the two locking surfaces are close to each other.

7. The segment system according to claim 5, characterized in that: Along the extending direction of the joints of adjacent pipe segments (100), a plurality of circumferential connecting devices are arranged at intervals.

8. The segment system according to claim 5, characterized in that: It also includes a plurality of longitudinal pulling devices, which are the segment pulling devices described in any one of claims 1 to 4 above, and a plurality of segment ring groups (200) are arranged at intervals along the first direction, and the longitudinal pulling devices are arranged at the joints of adjacent segment ring groups (200).

9. The segment system according to claim 8, characterized in that: Along the extending direction of the joints of adjacent segment ring groups (200), a plurality of longitudinal pulling devices are provided.

10. The segment system according to claim 9, characterized in that: On one of the segment ring groups (200), the joints between the segments (100) can abut against the segments (100) of another of the segment ring groups (200) along the first direction.

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