Shield segment

Abstract

The utility model discloses a shield segment, which relates to the technical field of tunnel engineering, and adopts the technical scheme that the shield segment comprises a segment main body, a plurality of mounting grooves are formed in an arc-shaped concave surface of the segment main body, channels connected with the side wall of the segment main body are formed in the inner side walls of the mounting grooves, and arc-shaped bolts are connected in the channels in a sliding manner; the length of the arc-shaped bolt is at least two times that of the channel, and a limiting piece is arranged in the installation groove. The arrangement of the limiting piece enables one end of the arc-shaped bolt not to be exposed out of the duct piece main body, the arc-shaped bolt is located in the duct piece main body, people can connect the two duct piece main bodies only by removing limiting of the arc-shaped bolt, people do not need to carry the arc-shaped bolt additionally when installing the duct piece main bodies, and people can install the duct piece main bodies conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, and more specifically, to a shield segment. Background Art

[0002] The shield segment is the main assembly component of the shield construction and the innermost barrier of the tunnel. It bears the role of resisting soil pressure, groundwater pressure and some special loads, and 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, as well as the waterproof performance and durability of the tunnel.

[0003] In the prior art, the cross-section of the shield segments is arc-shaped, and the arc-shaped segments are connected to each other to form an annular barrier located on the inner wall of the tunnel. The adjacent segments are generally connected together by bolts, which means that people need to carry bolts to connect each time they fix adjacent segments, making the connection process inconvenient.

[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a shield segment.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a shield segment, including a segment body with an arc-shaped cross-section, a plurality of installation grooves are opened on the arc-shaped concave surface of the segment body, a channel connected to the side wall of the segment body is opened on the inner side wall of the installation groove, an arc-shaped bolt is slidably connected in the channel, the length of the arc-shaped bolt is at least twice the length of the channel, and a limit member is arranged in the installation groove, and the limit member is used to limit the sliding of the arc-shaped bolt in the channel.

[0007] The utility model is further configured as follows: the limiting member includes a sliding column and a semi-ring fixed at one end of the sliding column, the opening of the semi-ring is arranged to face away from the sliding column, a sliding groove for sliding the sliding column is provided on the bottom wall of the mounting groove, and a ring groove for embedding the semi-ring is provided on the outer peripheral wall of the arc-shaped bolt.

[0008] The utility model is further configured as follows: a compression spring is arranged in the sliding groove, and the compression spring is used to provide a force for the half ring to press against the inner wall of the ring groove.

[0009] The utility model is further configured as follows: one end of the sliding column facing away from the semi-ring is fixedly connected to a limiting column, the diameter of the limiting column is larger than the diameter of the sliding column, and the limiting column is used to limit the sliding column from being separated from the sliding groove.

[0010] The utility model is further configured such that: when the half ring is embedded in the annular groove, one end of the arc-shaped bolt is flush with a side wall of the pipe segment body.

[0011] The utility model is further configured as follows: the number of arc-shaped bolts arranged on the pipe segment body is half the number of the mounting grooves.

[0012] To sum up, the utility model has the following beneficial effects: during the transportation of the segment body, the arc bolt is arranged in the channel and the part located in the installation groove is limited by the limiting piece, so that the arc bolt is limited in the channel, so that one end of the arc bolt will not be exposed outside the segment body, and the arc bolt itself is located inside the segment body. People only need to release the limit of the arc bolt to connect the two segment bodies, so that people do not need to carry extra arc bolts when installing the segment body, which makes it convenient for people to install the segment body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0016] Figure 4 It is a partial cross-sectional view of the utility model.

[0017] In the figure: 1. segment body; 2. mounting groove; 3. channel; 4. arc bolt; 5. sliding column; 6. half ring; 7. sliding groove; 8. ring groove; 9. compression spring; 10. limit column. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Shield segments, such as Figure 1 and Figure 2As shown, it includes a segment body 1 with an arc-shaped cross-section, a plurality of mounting grooves 2 are provided on the arc-shaped concave surface of the segment body 1, a channel 3 connected to the side wall of the segment body 1 is provided on the inner wall of the mounting groove 2, an arc-shaped bolt 4 is slidably connected in the channel 3, the length of the arc-shaped bolt 4 is at least twice the length of the channel 3, a limiting member is provided in the mounting groove 2, the limiting member is used to limit the sliding of the arc-shaped bolt 4 in the channel 3, the arc-shaped bolt 4 includes an arc-shaped segment and a threaded segment located at both ends of the arc-shaped segment, the maximum diameter of the threaded segment is smaller than the diameter of the arc-shaped segment, and the length of the arc-shaped segment is smaller than twice the length of the channel 3, and during the transportation of the segment body 1, the arc-shaped bolt 4 is arranged in the channel 3 and the part located in the mounting groove 2 is limited by the limiting member, so that the arc-shaped bolt 4 is limited in the channel 3. , so that one end of the arc bolt 4 will not be exposed outside the segment body 1. In the process of fixing the two segment bodies 1, people release the limit of the limit piece and the arc bolt 4, so that the arc bolt 4 can slide in the channel 3. People slide one end of the arc bolt 4 out of the segment body 1 and insert it into the channel 3 of the other segment body 1 until one end of the arc bolt 4 is exposed in the installation groove 2 of the other segment body 1, and then use two nuts to be threadedly connected to the two threaded sections of the arc bolt 4 respectively, so that the positions of the two segment bodies 1 are fixed by the arc bolt 4. This arrangement makes the arc bolt 4 itself located in the segment body 1, so that people do not need to carry the arc bolt 4 extra when installing the segment body 1, which is convenient for people to install the segment body 1.

[0020] like Figure 2 and Figure 3As shown, the limiting member includes a sliding column 5 and a semi-ring 6 fixed at one end of the sliding column 5, the opening of the semi-ring 6 is arranged to face away from the sliding column 5, a sliding groove 7 for sliding the sliding column 5 is provided on the bottom wall of the mounting groove 2, an annular groove 8 for embedding the semi-ring 6 is provided on the outer peripheral wall of the arc bolt 4, the sliding direction of the sliding column 5 is toward the arc bolt 4, and the semi-ring 6 can be embedded in the annular groove 8 by sliding the sliding column 5, and the semi-ring 6 can limit the sliding of the arc bolt 4 in the channel 3, and a compression spring 9 is provided in the sliding groove 7, and the compression spring 9 is used to provide a force for the semi-ring 6 to press against the inner wall of the annular groove 8, and the two ends of the compression spring 9 respectively press against the bottom of the sliding groove 7 and the limiting member, and the setting of the compression spring 9 makes the semi-ring 6 and the inner wall of the annular groove 8 stick tightly, so that during transportation During the movement, the semi-ring 6 is not easy to separate from the annular groove 8. When people need to release the limiting piece for the arc bolt 4, they slide the sliding column 5 toward the sliding groove 7 to make the semi-ring 6 disengage from the annular groove 8. At this time, the limiting effect of the limiting piece on the arc bolt 4 disappears, thereby enabling the movement of the arc bolt 4. The end of the sliding column 5 facing away from the semi-ring 6 is fixedly connected to the limiting column 10. The diameter of the limiting column 10 is larger than the diameter of the sliding column 5. The limiting column 10 is used to limit the sliding column 5 from disengaging from the sliding groove 7. The sliding groove 7 includes a large-diameter groove and a small-diameter groove that are interconnected, wherein the small-diameter groove is connected to the mounting groove 2, and the limiting column 10 is always located in the large-diameter groove. The setting of the limiting column 10 makes it difficult for the limiting piece to disengage from the sliding groove 7.

[0021] like Figure 4 As shown, when the half ring 6 is embedded in the annular groove 8, one end of the arc bolt 4 is flush with a side wall of the segment body 1. This arrangement makes the sliding distance of the arc bolt 4 in the channel 3 as short as possible, and ensures that one end of the arc bolt 4 will not be exposed outside the segment body 1. The number of arc bolts 4 arranged on the segment body 1 is half the number of mounting grooves 2. In this embodiment, the number of mounting grooves 2 is eight, and the number of arc bolts 4 is four. This arrangement can meet the connection requirements of the segment body 1.

[0022] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A shield segment, characterized in that: The invention comprises a tube segment body (1) with an arc-shaped cross section, a plurality of installation grooves (2) are provided on the arc-shaped concave surface of the tube segment body (1), a channel (3) connected to the side wall of the tube segment body (1) is provided on the inner side wall of the installation groove (2), an arc-shaped bolt (4) is slidably connected in the channel (3), the length of the arc-shaped bolt (4) is at least twice the length of the channel (3), and a limiting member is provided in the installation groove (2), the limiting member is used to limit the sliding of the arc-shaped bolt (4) in the channel (3).

2. The shield segment according to claim 1, characterized in that: The limiting member comprises a sliding column (5) and a semi-ring (6) fixed at one end of the sliding column (5); the opening of the semi-ring (6) is arranged to face away from the sliding column (5); a sliding groove (7) for sliding the sliding column (5) is provided on the bottom wall of the mounting groove (2); and a ring groove (8) for embedding the semi-ring (6) is provided on the outer peripheral wall of the arc-shaped bolt (4).

3. The shield segment according to claim 2, characterized in that: A compression spring (9) is arranged in the sliding groove (7), and the compression spring (9) is used to provide a force for the half ring (6) to press against the inner wall of the ring groove (8).

4. The shield segment according to claim 3, characterized in that: One end of the sliding column (5) facing away from the semi-ring (6) is fixedly connected to a limiting column (10), the diameter of the limiting column (10) is larger than the diameter of the sliding column (5), and the limiting column (10) is used to limit the sliding column (5) from disengaging from the sliding groove (7).

5. The shield segment according to claim 4, characterized in that: When the half ring (6) is embedded in the annular groove (8), one end of the arc-shaped bolt (4) is flush with a side wall of the segment body (1).

6. The shield segment according to claim 5, characterized in that: The number of arc-shaped bolts (4) provided on the segment body (1) is half the number of the mounting grooves (2).

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