Pipe piece

Abstract

The utility model discloses a duct piece, and relates to the field of tunnel construction, and the technical scheme is that the duct piece comprises a duct piece main body, two containing grooves are formed in the duct piece main body, supporting strips used for supporting the duct piece main body are arranged in the containing grooves, the supporting strips are detachably installed in the containing grooves through first limiting pieces, and clamping blocks are arranged on the supporting strips; a clamping groove for clamping the clamping block is formed in the side wall of the containing groove, and a second limiting piece used for abutting against the supporting strip and limiting the clamping block to be disengaged from the clamping groove is arranged in the clamping groove. The stability of the duct pieces on the ground is remarkably improved under the action of the supporting strips, meanwhile, the adjacent duct pieces are prevented from being squeezed and damaged by the supporting strips, each duct piece is provided with two supporting strips, other supporting pieces do not need to be additionally used for stacking through matched use of the first limiting piece and the second limiting piece, and when the duct pieces are manufactured, the supporting strips are not prone to being damaged. By adding the air entraining agent into the concrete, the workability of a concrete mixture is improved, so that the crack resistance of the duct piece main body is improved.

Description

Technical Field

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

[0002] Segments are an important structural component in tunnel construction. They are usually used to form the walls or top of tunnels. They are mostly circular or other geometric shapes, and made of concrete, reinforced concrete, steel, etc. The main function of segments is to fix the tunnel walls, strengthen the tunnel structure, and make the tunnel have better load-bearing capacity and stability.

[0003] Since the cross-section of the common pipe segments is arc-shaped, their stability is relatively poor when placed on the ground. This is mainly because the shape and weight distribution of the arc-shaped pipe segment itself make it difficult to maintain balance. In order to solve this problem, two pieces of wood are usually placed at the bottom of the pipe segment during construction to provide it with a stable support point to prevent the pipe segment from sliding or tipping over due to its own weight. At the same time, in order to ensure that they are not squeezed or damaged by each other, two wooden sticks are usually used to separate each two pipe segments. Although this can maintain the spacing between the pipe segments, it also means that a large number of wooden sticks are needed to support and isolate these pipe segments. A large number of wooden sticks need to be properly managed, otherwise they are easily lost or damaged, which will affect the subsequent stacking of pipe segments.

[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 purpose of the utility model is to provide pipe segments, which is conducive to ensuring the normal stacking of the pipe segments.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a pipe segment, including a pipe segment body, the cross-section of the pipe segment body is arc-shaped, and the pipe segment body is provided with two mutually symmetrical receiving grooves on its arc-shaped convex surface, and a support bar for supporting the pipe segment body is arranged in the receiving groove, and the support bar is detachably installed in the receiving groove through a limiting member, and blocks are arranged on one side of both ends of the support bar facing the receiving groove, and a slot for the block to be inserted is arranged on the side wall of the receiving groove, and the cross-sections of the block and the slot are both L-shaped, and a limiting member 2 is arranged in the slot for resisting the support bar and limiting the block from escaping from the slot.

[0007] The utility model is further configured as follows: the limiting member is an insert block, both ends of the pipe segment body and the support bar are provided with insertion holes for the insert block to be inserted, the end of the insert block facing away from the insertion hole is provided with a resistance block, and a groove for accommodating the resistance block is provided on the pipe segment body at the insertion hole, the resistance block is used to resist against the inner bottom wall of the groove, and the thickness of the resistance block is equal to the depth of the groove.

[0008] The utility model is further configured as follows: the length of the groove is greater than the length of the abutment block, and there is a gap between the abutment block and the inner wall of the groove for a finger to be inserted.

[0009] The utility model is further configured as follows: the second limiting member includes a limiting column for contacting with the side wall of the support bar, a thread head is provided at the bottom of the limiting column, and a thread groove matching the thread head is opened on the bottom wall of the slot.

[0010] The utility model is further configured as follows: a screw piece is arranged at one end of the limiting column away from the thread head.

[0011] The utility model is further configured as follows: the height of the vertical part of the card block is equal to the depth of the vertical part of the card slot.

[0012] In summary, the utility model has the following beneficial effects: through the effect of the support bars, the stability of the pipe segments on the ground is significantly improved, and it is not easy to slide or tip over. At the same time, every two pipe segments are isolated by the support bars to avoid mutual squeezing or damage. Each pipe segment has two support bars, and through the use of limit members 1 and 2, there is no need to use other support members for stacking, which is conducive to ensuring the normal stacking of the pipe segments. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0016] Figure 4 for Figure 1 The enlarged schematic diagram of the middle A part;

[0017] Figure 5 It is a structural schematic diagram of the second limiting member in the utility model.

[0018] In the figure: 1. pipe segment body; 2. receiving groove; 3. support bar; 4. clamping block; 5. clamping groove; 6. inserting block; 7. inserting hole; 8. abutment block; 9. groove; 10. limiting column; 11. threaded head; 12. threaded groove; 13. screwing piece. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-3As shown, the segment comprises a segment body 1. When the segment body 1 is manufactured, an air entraining agent is added to the concrete to improve the workability of the concrete mixture, thereby facilitating the improvement of the crack resistance of the segment body. The segment body 1 has an arc-shaped cross section. Two mutually symmetrical receiving grooves 2 are provided on the segment body 1 on its arc-shaped convex surface. A support bar 3 for supporting the segment body 1 is provided in the receiving groove 2. The support bar 3 is detachably installed in the receiving groove 2 through a limiting member. Blocks 4 are provided on both ends of the support bar 3 facing the receiving groove 2. A slot 5 for the block 4 to be inserted is provided on the side wall of the receiving groove 2. The cross sections of the block 4 and the slot 5 are The two limiting members 2 are both L-shaped, and are used to abut against the support strip 3 and limit the block 4 from coming out of the slot 5. When stacking the pipe segments, the fixing of the limiting member to the support strip 3 can be released, and the support strip 3 can be taken out of the receiving slot 2. The block 4 on the support strip 3 is aligned with the slot 5 on the side wall of the receiving slot 2, and the block 4 is inserted into the slot 5. Since the cross-sections of the block 4 and the slot 5 are both L-shaped, this design enables the block 4 to be firmly fixed in the slot 5 and is not easy to fall off. At the same time, the limiting member 2 in the slot 5 can further abut against the support strip 3 to ensure that the block 4 will not come out of the slot 5 when subjected to external force. The pipe segments with support bars 3 are stacked one by one. Due to the effect of support bars 3, the stability of the pipe segments on the ground is significantly improved, and it is not easy to slide or tip over. At the same time, every two pipe segments are isolated by support bars 3 to avoid mutual squeezing or damage. Each pipe segment has two support bars 3, and through the use of limiter 1 and limiter 2, there is no need to use other support members for stacking, which is conducive to ensuring the normal stacking of the pipe segments. When assembling the pipe segments, the limit of support bar 3 by limiter 2 can be released, and support bar 3 can be pushed to make the card block 4 fall out of the card slot 5, so that support bar 3 can be removed from the pipe segment body, and it can be placed into The support strip 3 is fixed in the receiving groove 2 and its side walls are in conflict with the inner side walls of the receiving groove 2. At the same time, the support strip 3 is firmly fixed in the receiving groove 2 by the limiter 1, which can ensure the integrity of the entire pipe segment, and then ensure the strength of the entire pipe segment after assembly. The height of the vertical part of the clamping block 4 is equal to the depth of the vertical part of the clamping groove 5. After the clamping block 4 is fully inserted into the clamping groove 5, since the height of the vertical part of the clamping block 4 is equal to the depth of the vertical part of the clamping groove 5, the bottom surface of the support strip 3 will form a conflict with the arc-shaped convex surface of the pipe segment body 1, so that there is a larger contact area between the support strip 3 and the pipe segment body 1, thereby further enhancing the supporting effect of the support strip 3 on the pipe segment body 1.

[0021] See also Figure 4As shown, the first limiting member is an insert block 6, and both ends of the pipe segment body 1 and the support bar 3 are provided with insert holes 7 for the insert block 6 to be inserted, and an abutment block 8 is arranged at the end of the insert block 6 facing away from the insert hole 7. A groove 9 for accommodating the abutment block 8 is arranged at the insert hole 7 on the pipe segment body 1, and the abutment block 8 is used to abut against the inner bottom wall of the groove 9, and the thickness of the abutment block 8 is equal to the depth of the groove 9. After the support bar 3 is installed into the receiving groove 2, it is ensured that the insert hole 7 on the support bar 3 is aligned with the insert hole 7 on the side wall of the receiving groove 2, and the insert block 6 can be inserted into the receiving groove 2 and the insert hole 7 on the support bar 3 in turn. When the insert block 6 is fully inserted into the insert hole 7, the abutment block 8 will form a tight abutment with the inner bottom wall of the groove 9. At this time, the support bar 3 is firmly fixed in the receiving groove 2 of the pipe segment body 1 and cannot be easily moved or fallen off. The fixing of the support bar 3 and the receiving groove 2 can be released by simply pulling the resistance block 8 to make the plug block 6 disengage from the insertion hole 7 on the support bar 3 and the receiving groove 2 in turn. The fixing and separation between the support bar 3 and the receiving groove 2 can be achieved by inserting and disengaging the plug block 6 in the insertion hole 7, and the operation is relatively convenient. At the same time, since the thickness of the resistance block 8 is equal to the depth of the groove 9, the side wall of the support bar 3 is relatively flat, which is convenient for the two adjacent pipe segments to form a tight fit after assembly. The length of the groove 9 is greater than the length of the resistance block 8. There is a gap between the resistance block 8 and the inner wall of the groove 9 for fingers to be inserted. Through this setting, the operator can easily insert his fingers into the space between the resistance piece and the inner wall of the groove 9, and firmly grasp the resistance piece to pull the plug block 6 out of the insertion hole 7, and the operation is relatively labor-saving.

[0022] See also Figure 3 , Figure 5As shown, the second limiting member includes a limiting column 10 for contacting with the side wall of the support bar 3, a threaded head 11 is arranged at the bottom of the limiting column 10, and a threaded groove 12 matching the threaded head 11 is opened on the inner bottom wall of the slot 5. When casting the pipe segment, the slot 5 is pre-filled with embedded parts, and the threaded groove 12 is opened on the embedded parts. After the block 4 is completely inserted into the slot 5, the limiting column 10 can be rotated so that the threaded head 11 is gradually screwed into the threaded groove 12 in the slot 5. As the threaded head 11 is screwed in, the limiting column 10 and the side wall of the support bar 3 are in contact with each other, and at the same time, the block 4 and the inner wall of the slot 5 are also in contact. At this time, the support bar 3 is limited and firmly fixed. It is fixed on the segment body 1, and due to the self-locking property of the threaded connection, this fixed state can remain stable for a long time. Through the close contact between the limit column 10 and the support bar 3 and the threaded connection between the threaded head 11 and the threaded groove 12, a reliable connection relationship is provided between the support bar 3 and the segment body 1, which not only improves the placement stability of the segment structure, but also simplifies the disassembly and assembly process of the support bar 3, thereby improving work efficiency. A screw piece 13 is provided at the end of the limit column 10 away from the threaded head 11. The design of the screw piece 13 provides a stable fulcrum for screwing the limit column 10, which is convenient for the operator to grasp and apply force, making the operation of tightening the threaded head 11 less laborious.

[0023] 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 segment, comprising a segment body (1), wherein the segment body (1) has an arc-shaped cross section, and is characterized in that: The segment body (1) is provided with two mutually symmetrical receiving grooves (2) on its arc-shaped convex surface, and a support bar (3) for supporting the segment body (1) is arranged in the receiving groove (2), and the support bar (3) is detachably installed in the receiving groove (2) through a limiting member 1, and a clamping block (4) is arranged on both ends of the support bar (3) on the side facing the receiving groove (2), and a clamping groove (5) for clamping the clamping block (4) is arranged on the side wall of the receiving groove (2), and the cross-sections of the clamping block (4) and the clamping groove (5) are both L-shaped, and a limiting member 2 is arranged in the clamping groove (5) for contacting the support bar (3) and limiting the clamping block (4) from falling out of the clamping groove (5).

2. The segment according to claim 1, characterized in that: The first limiting member is an insert block (6), and both ends of the pipe segment body (1) and the support bar (3) are provided with insert holes (7) for inserting the insert block (6), and the end of the insert block (6) facing away from the insert hole (7) is provided with a resistance block (8), and a groove (9) for accommodating the resistance block (8) is provided on the pipe segment body (1) at the insert hole (7), and the resistance block (8) is used to resist the inner bottom wall of the groove (9), and the thickness of the resistance block (8) is equal to the depth of the groove (9).

3. The segment according to claim 2, characterized in that: The length of the groove (9) is greater than the length of the abutment block (8), and there is a gap between the abutment block (8) and the inner wall of the groove (9) into which a finger can be inserted.

4. The segment according to claim 1, characterized in that: The second limiting member comprises a limiting column (10) for contacting the side wall of the support bar (3), a thread head (11) is provided at the bottom of the limiting column (10), and a thread groove (12) matching the thread head (11) is provided on the inner bottom wall of the slot (5).

5. The segment according to claim 4, characterized in that: A screw piece (13) is provided at one end of the limiting column (10) away from the thread head (11).

6. The segment according to claim 1, characterized in that: The height of the vertical part of the card block (4) is equal to the depth of the vertical part of the card slot (5).

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