A connection structure for quickly assembling shield segments

Abstract

The utility model relates to the field of shield segments, and specifically discloses a connection structure for quickly assembling shield segments, comprising a segment body, a fixed latch and a latch seat buried in the segment body, a bearing hole is arranged at the front end of the segment body, a notch is arranged at the side of the segment body, the fixed latch is rotatably connected with the bearing hole, a wedge is arranged in the notch, a rotating rod is arranged at one end of the fixed latch, a fixed clamping block is arranged at the other end of the fixed latch, a latch hole is arranged in the middle of the latch seat, the shape of the latch hole is consistent with the shape of the fixed clamping block, the length of the latch hole corresponds to the length of the fixed latch, a clamping groove is arranged at the bottom of the latch hole, and the connection between two shield segments is carried out by arranging the fixed latch and the latch hole, which can replace the original screw connection, is not only convenient to install, but also does not have the problem of fatigue fracture of the screw due to long-term use.

Description

Technical Field

[0001] The utility model relates to the field of shield segments, in particular to a connection structure for quickly assembling shield segments. Background Art

[0002] The shield segment is the main assembly component of the shield construction and the innermost barrier of the tunnel. It is responsible for resisting soil pressure, groundwater pressure and some special loads. The shield segment is the permanent lining structure of the shield tunnel. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel.

[0003] Most of the existing shield segment connection methods use bolts and other connectors. This method can connect multiple shield segments tightly with small gaps at the connection points. For example, the shield segment connection method introduced in the "A Shield Segment Connection Structure" with patent authorization announcement number CN219711529U. However, in actual use, the shield segments spliced ​​in this way need to be manually installed with bolts during installation, which is time-consuming and labor-intensive. In addition, the bolts will break, rust and fall off after long-term use. Therefore, it is necessary to assemble simple shield segments. Utility Model Content

[0004] The utility model is to solve the technical problems mentioned in the above background technology, and proposes the following technical solutions:

[0005] A connection structure for quickly assembling shield segments, comprising a segment body, a fixed latch and a latch seat buried in the segment body, the fixed latch and the latch seat are respectively located at the upper and lower ends of the segment body, a bearing hole is provided at the front end of the segment body, a notch is provided at the side of the segment body, the notch is communicated with the bearing hole, the fixed latch is rotatably connected to the bearing hole, one end of the fixed latch is located in the notch, a wedge is provided in the notch, a rotating rod is provided at one end of the fixed latch, the rotating rod is located in the notch, a fixed clamping block is provided at the other end of the fixed latch, and the fixed clamping block is a rectangular parallelepiped structure.

[0006] A pin hole is arranged in the middle of the pin seat, the shape of the pin hole is consistent with the shape of the fixed card block, the length of the pin hole corresponds to the length of the fixed pin, and a card slot is arranged at the bottom of the pin hole.

[0007] Preferably, the notch and the wedge are interference fit.

[0008] Preferably, two positioning columns are provided at the upper end of the segment body, and the two positioning columns are symmetrically provided on the left and right sides of the fixing pin, and two positioning slots are provided at the lower end of the segment body, and the positions and sizes of the two positioning slots correspond to the positions and sizes of the two positioning columns.

[0009] Preferably, a slide groove is provided on the left side of the segment body, one end of the slide groove is connected to the bottom of the segment body, and a sliding block is provided on the right side of the segment body.

[0010] Preferably, waterproof gaskets are provided at the upper and lower ends of the tube segment body.

[0011] The beneficial effects of the utility model are:

[0012] 1. The connection between two shield segments can be replaced by setting fixed pins and pin holes, which is not only convenient for installation, but also avoids the problem of fatigue fracture of screws due to long-term use.

[0013] 2. By respectively setting positioning columns and positioning slots at the front and rear ends of the segment body, the shield segment can be further positioned through the cooperation of the positioning columns and the positioning slots to prevent the two shield segments from rotating during the installation process when they are connected only by fixing pins and pin holes.

[0014] 3. By respectively arranging sliders and slide grooves on the left and right sides of the segment body, not only can the horizontal shield segments be connected through the sliders and slide grooves, but also during installation, the two shield segments can be prevented from being connected only through fixed pins and pin holes, which may cause rotation problems.

[0015] 4. By setting waterproof gaskets at the upper and lower ends of the shield segment, the problem of gap between the two shield segments caused by the connection method of fixed pins and pin holes can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of two shield segments in an unfixed state in Embodiment 1 of the utility model;

[0018] Figure 3 for Figure 2 Enlarged image of the middle circle;

[0019] Figure 4 This is a cross-sectional view of the structure of two shield segments in a fixed state in Embodiment 1 of the utility model;

[0020] Figure 5 for Figure 4 Enlarged image of the middle circle;

[0021] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0022] Figure 7 This is a bottom view of the second embodiment of the present utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0024] Fig. 9 This is a structural diagram of the fourth embodiment of the present utility model.

[0025] In the figure: 1. segment body; 1-1. bearing hole; 1-2. notch; 1-3. slide groove; 1-4. slider; 2. fixing pin; 3. pin seat; 3-1. pin hole; 4. rotating rod; 5. fixing block; 6. wedge; 7. slot; 8. positioning column; 9. positioning slot; 10. waterproof gasket. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present utility model, it is necessary to understand that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described in the terms "fixed connection" and "fixed setting" include but are not limited to "welding", "riveting", "adhesion", and "threaded connection". The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device.

[0028] The directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0029] Embodiment 1

[0030] Reference Figure 1-5A connection structure for quickly assembling shield segments, comprising a segment body 1, a fixed latch 2 and a latch seat 3 buried in the segment body 1, the fixed latch 2 and the latch seat 3 are respectively located at the upper and lower ends of the segment body 1, a bearing hole 1-1 is arranged at the front end of the segment body 1, a notch 1-2 is arranged at the side of the segment body 1, the notch 1-2 is communicated with the bearing hole 1-1, the fixed latch 2 is rotatably connected with the bearing hole 1-1, one end of the fixed latch 2 is located in the notch 1-2, a wedge 6 is arranged in the notch 1-2, a rotating rod 4 is arranged at one end of the fixed latch 2, the rotating rod 4 is located in the notch 1-2, a fixed clamping block 5 is arranged at the other end of the fixed latch 2, and the fixed clamping block 5 is a rectangular parallelepiped structure.

[0031] A pin hole 3-1 is arranged in the middle of the pin seat 3, the shape of the pin hole 3-1 is consistent with the shape of the fixed card block 5, the length of the pin hole 3-1 corresponds to the length of the fixed pin 2, and a card slot 7 is arranged at the bottom of the pin hole 3-1, and the card slot 7 is a round hole.

[0032] Preferably, the notch 1 - 2 and the wedge 6 are interference fit.

[0033] In actual operation, refer to Figure 2-3 When installing the shield segment, the fixed pin 2 of the second shield segment can be inserted into the pin seat 3 of the previous shield segment. At this time, the fixed block 5 at the front end of the fixed pin 2 is located in the card groove 7 at one end of the pin seat 3, and then the wedge 6 is driven in from the notch 1-2. During the driving process, the wedge 6 will push the rotating rod 4 at one end of the fixed pin 2 to rotate. When the wedge 6 is fully inserted, the rotating rod will drive the fixed pin 2 to rotate 90°. Figure 4-5 As shown, at this time, the fixed card block 5 located in the card slot 7 will rotate 90 degrees, and the longer end of the fixed card block 5 is perpendicular to the longer end of the latch hole 3-1, and the fixed card block 5 cannot be pulled out from the latch hole 3-1.

[0034] Embodiment 2

[0035] Reference Figure 6-7 The difference between this embodiment and the first embodiment is that two positioning columns 8 are arranged at the upper end of the segment body 1, and the two positioning columns 8 are symmetrically arranged on the left and right sides of the fixing pin 2, and two positioning slots 9 are arranged at the lower end of the segment body 1, and the positions and sizes of the two positioning slots 9 correspond to the positions and sizes of the two positioning columns 8.

[0036] In actual operation, when installing the shield segment, the fixing pin 2 of the second shield segment can be inserted into the pin seat 3 of the previous shield segment, and the positioning column 8 can be inserted into the positioning groove 9 at the same time, which can prevent the shield segment from rotating during installation, resulting in the shield segment being not installed in place.

[0037] Embodiment 3

[0038] Reference Figure 8The difference between this embodiment and the first embodiment is that a slide groove 1-3 is arranged on the left side of the segment body 1, one end of the slide groove 1-3 is connected to the bottom of the segment body 1, and a slider 1-4 is arranged on the right side of the segment body 1.

[0039] In actual operation, the horizontal shield segments can be connected through the slide grooves 1-3 and sliders 1-4 on the left and right sides of the segment body 1. It can also ensure that during installation, the problem of the shield segments not being properly installed due to rotation only by relying on the connection between the fixed pin 2 and the pin seat 3 can be avoided.

[0040] Embodiment 4

[0041] Reference Fig. 9 The difference between this embodiment and the first embodiment is that waterproof gaskets 10 are provided at the upper and lower ends of the segment body 1, and the material of the waterproof gasket 10 includes but is not limited to asphalt board, rubber and wood board.

Claims

1. A connection structure for quickly assembling shield segments, comprising a segment body (1), a fixing pin (2) and a pin seat (3) buried in the segment body (1), characterized in that: The fixed latch (2) and the latch seat (3) are respectively located at the upper and lower ends of the segment body (1); a bearing hole (1-1) is provided at the front end of the segment body (1); a notch (1-2) is provided at the side of the segment body (1); the notch (1-2) is communicated with the bearing hole (1-1); the fixed latch (2) is rotatably connected to the bearing hole (1-1); one end of the fixed latch (2) is located in the notch (1-2); a wedge (6) is provided in the notch (1-2); one end of the fixed latch (2) is provided with a rotating rod (4); the rotating rod (4) is located in the notch (1-2); the other end of the fixed latch (2) is provided with a fixed block (5); the fixed block (5) is a rectangular parallelepiped structure; A pin hole (3-1) is provided in the middle of the pin seat (3); the shape of the pin hole (3-1) is consistent with the shape of the fixed card block (5); the length of the pin hole (3-1) corresponds to the length of the fixed pin (2); and a card slot (7) is provided at the bottom of the pin hole (3-1).

2. A connection structure for rapidly assembling shield segments according to claim 1, characterized in that: The notch (1-2) and the wedge (6) are interference fit.

3. The connection structure of the fast-assembly shield segment according to claim 2 is characterized in that: Two positioning columns (8) are arranged at the upper end of the segment body (1), and the two positioning columns (8) are symmetrically arranged on the left and right sides of the fixing pin (2). Two positioning slots (9) are arranged at the lower end of the segment body (1), and the positions and sizes of the two positioning slots (9) correspond to the positions and sizes of the two positioning columns (8).

4. The connection structure of a fast-assembly shield segment according to claim 2 is characterized in that: A slide groove (1-3) is arranged on the left side of the segment body (1), one end of the slide groove (1-3) is connected to the bottom of the segment body (1), and a sliding block (1-4) is arranged on the right side of the segment body (1).

5. The connection structure of the fast-assembly shield segment according to claim 2 is characterized in that: Waterproof gaskets (10) are provided at the upper and lower ends of the tube segment body (1).

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