A positioning and installing device for subway segment spiral steel bars

Abstract

The utility model discloses a subway pipe piece spiral reinforcement positioning installation device relates to tunnel engineering prefabricated component production technical field, and the both sides of the outer wall of positioning column are fixed with four arc muscles at equal distance, and the both sides of positioning column and opposite two arc muscles are tied with longitudinal muscle, and the outer wall of four longitudinal muscles is covered with spiral reinforcement, and one end of positioning column is connected with positioning assembly, and the other end of positioning column is connected with locking assembly, and positioning assembly includes first connecting seat, and the side of first connecting seat is provided with first connecting hole, and the between one end of positioning column and first connecting seat is provided with the plug -in structure of cooperation use. In the utility model, through positioning assembly and locking assembly, force guiding spiral reinforcement to fall into the accurate preset card slot track, and the randomness deviation of manual placement is thoroughly eliminated, and it is guaranteed that the spatial position of spiral reinforcement completely meets the design requirement, and the pipe piece structure performance is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated component production technology for tunnel engineering, and in particular to a positioning and installation device for spiral steel bars of subway tunnel segments. Background Technology

[0002] Subway shield tunnel segments are the main load-bearing components of the tunnel structure, and their quality directly affects the safety and service life of the tunnel. Segments are typically made by casting concrete using high-precision steel molds, and contain a complex steel reinforcement skeleton. Among these, the spirally arranged main reinforcement bars (spiral bars) are key load-bearing components of the skeleton, crucial to the segment's bending resistance, shear resistance, and overall integrity.

[0003] Currently, the installation of spiral reinforcing bars for subway tunnel segments mainly relies on manual positioning and binding within steel molds. Operators need to place the spiral reinforcing bars into pre-set positioning slots or pads within the steel mold according to the drawings and their experience, and then use binding wire or welding to fix them to other reinforcing bars such as inner and outer arc bars and longitudinal bars. This traditional method has the following significant drawbacks: 1. Low positioning accuracy: The positional deviation of manually placed spiral steel bars is large, making it difficult to ensure the accuracy of the pitch, diameter and spatial position of the spiral steel bars, which can easily lead to the spiral steel bars being exposed at the bolt holes and grouting holes.

[0004] 2. Low installation efficiency: The special shape of spiral steel bars makes the adjustment, positioning and fixing process cumbersome and time-consuming, which takes up a lot of man-hours and becomes a difficult process in the segment production line.

[0005] 3. Poor quality stability: It relies on the experience and sense of responsibility of workers. The installation quality varies greatly between different batches and different workers, making it difficult to achieve standardized and homogeneous production.

[0006] 4. High rework rate: Problems such as out-of-tolerance skeleton dimensions or insufficient protective layer thickness caused by inaccurate positioning often require rework and adjustment, resulting in waste of materials and time.

[0007] Therefore, a positioning and installation device for spiral steel bars of subway tunnel segments is provided. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a positioning and installation device for spiral steel bars in subway tunnel segments. Through positioning and locking components, the spiral steel bars are forcibly guided into a precisely preset groove trajectory, completely eliminating the arbitrary deviations caused by manual placement, ensuring that the spatial position of the spiral steel bars fully meets the design requirements, significantly improving the structural performance of the tunnel segments, and overcoming the deficiencies of existing technologies.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A positioning and installation device for spiral steel bars in subway tunnel segments includes a positioning column. Four arc-shaped ribs are fixed at equal intervals on both sides of the outer wall of the positioning column. Longitudinal ribs are tied to two opposite arc-shaped ribs on both sides of the positioning column. Spiral steel bars are sleeved on the outer walls of the four longitudinal ribs. A positioning component is connected to one end of the positioning column, and a locking component is connected to the other end of the positioning column.

[0010] As a further embodiment of this utility model: the positioning component includes a first connecting seat, a first connecting hole is provided on the side of the first connecting seat, and a plug-in structure is provided between one end of the positioning post and the first connecting seat for cooperative use.

[0011] As a further embodiment of this utility model: the plug-in structure includes a fan-shaped protrusion disposed on one side of the positioning post, a plug-in block disposed in the middle of the end of the positioning post where the fan-shaped protrusion is disposed, a plug hole disposed in the middle of the first connecting seat to form a plug-in engagement with the plug-in block, and an arc-shaped groove disposed on one side of the plug hole to form a plug-in engagement with the fan-shaped protrusion.

[0012] As a further improvement of this utility model: the locking component includes a second connecting seat, one side of which is provided with a connecting groove, and the other end of the positioning post is provided with a mounting hole, in which a compensation pin is slidably inserted.

[0013] As a further improvement of this utility model: a bolt hole is provided on the second connecting seat and on one side of the connecting groove, and a screw hole is provided on the compensating pin.

[0014] As a further improvement of this utility model, a second connecting hole is provided on the side of the second connecting seat.

[0015] As a further improvement of this utility model, both the first connecting seat and the second connecting seat are installed in the segment mold by bolts.

[0016] As a further improvement of this utility model, the connection points of the spiral steel bar and the four longitudinal bars are all tied together with iron wire.

[0017] The beneficial effects of this utility model are as follows: 1. By using positioning and locking components, the spiral steel bars are forcibly guided into the precisely preset slot trajectory, completely eliminating the random deviation of manual placement, ensuring that the spatial position of the spiral steel bars fully meets the design requirements, and significantly improving the performance of the segment structure.

[0018] 2. It eliminates the tedious process of repeated manual measurement, adjustment, and lifting for positioning. The spiral steel bar only requires a single embedding action to achieve precise positioning, effectively shortening the installation time compared to traditional methods and significantly improving the production line cycle time. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of a positioning and installation device for spiral steel bars in subway tunnel segments proposed in this utility model.

[0020] Figure 2 This is a second-view three-dimensional structural diagram of a positioning and installation device for spiral steel bars in subway tunnel segments proposed in this utility model.

[0021] Figure 3 This is a partial structural schematic diagram of a positioning and installation device for spiral steel bars in subway tunnel segments proposed in this utility model.

[0022] Figure 4 This utility model proposes a positioning and installation device for spiral steel bars of subway tunnel segments. Figure 2 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Positioning post; 2. Spiral steel bar; 3. Screw hole; 4. Second connecting seat; 5. Compensating pin; 6. Arc groove; 7. Insertion hole; 8. First connecting seat; 9. Fan-shaped protrusion; 10. Insertion block; 11. First connecting hole; 12. Arc rib; 13. Mounting hole; 14. Longitudinal rib; 15. Bolt hole; 16. Second connecting hole; 17. Connecting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figure 1-4 A positioning and installation device for spiral steel bars of subway tunnel segments includes a positioning column 1. Four arc-shaped ribs 12 are fixed at equal intervals on both sides of the outer wall of the positioning column 1. Longitudinal ribs 14 are tied to the two opposite arc-shaped ribs 12 on both sides of the positioning column 1. The arc-shaped ribs 12 support the longitudinal ribs 14, so that the longitudinal ribs 14 maintain a certain distance from the positioning column 1. Spiral steel bars 2 are sleeved on the outer wall of the four longitudinal ribs 14. A positioning component is connected to one end of the positioning column 1, and a locking component is connected to the other end of the positioning column 1.

[0026] The positioning component includes a first connecting seat 8, a first connecting hole 11 is provided on the side of the first connecting seat 8, and a mating plug-in structure is provided between one end of the positioning post 1 and the first connecting seat 8.

[0027] The plug-in structure includes a fan-shaped protrusion 9 on one side of the positioning post 1, a plug-in block 10 in the middle of the end of the positioning post 1 where the fan-shaped protrusion 9 is located, a plug hole 7 in the middle of the first connecting seat 8 that forms a plug-in engagement with the plug-in block 10, and an arc-shaped groove 6 on one side of the plug hole 7 that forms a plug-in engagement with the fan-shaped protrusion 9.

[0028] The locking assembly includes a second connecting seat 4, a connecting groove 17 on one side of the second connecting seat 4, and a mounting hole 13 on the other end of the positioning post 1, into which a compensation pin 5 is slidably inserted.

[0029] The second connecting seat 4 has a second connecting hole 16 on its side. The first connecting seat 8 and the second connecting seat 4 are both installed in the segment mold by bolts. The connection points of the spiral steel bar 2 and the four longitudinal bars 14 are all tied with iron wire.

[0030] The first connecting seat 8 and the second connecting seat 4 are fixed to both ends of the segment mold with bolts. The four longitudinal ribs 14 are connected to the arc ribs 12 on both sides of the positioning column 1 with iron wire, and the spiral steel bar 2 is sleeved on the outside of the four longitudinal ribs 14. After the connection point of the spiral steel bar 2 and the four longitudinal ribs 14 is tied with iron wire, the insertion hole 7 and the arc groove 6 at one end of the positioning column 1 are respectively sleeved on the insertion block 10 and the fan-shaped protrusion 9 on the first connecting seat 8. The compensation pin 5 at the other end of the positioning column 1 is pulled out from the mounting hole 13 and the end of the compensation pin 5 is inserted into the connecting groove 17, so that the positioning column 1 and the compensation pin 5 can be supported by the second connecting seat 4, and the positioning column 1 and the spiral steel bar 2 can be accurately installed on the segment mold.

[0031] Example 2 is an optimization based on Example 1, specifically: The second connecting seat 4 is provided with a bolt hole 15 on one side of the connecting groove 17, and the compensating pin 5 is provided with a screw hole 3.

[0032] After the end of the compensation pin 5 is inserted into the connecting groove 17, a bolt is inserted from the bolt hole 15 and screwed into the bolt hole 3 to fix the compensation pin 5 and prevent the compensation pin 5 from falling out of the connecting groove 17.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A positioning and installation device for spiral steel bars of subway tunnel segments, comprising a positioning column (1), characterized in that, Four arc-shaped ribs (12) are fixed at equal distances on both sides of the outer wall of the positioning column (1). Longitudinal ribs (14) are tied on the two arc-shaped ribs (12) on both sides of the positioning column (1) and opposite to each other. Spiral steel bars (2) are sleeved on the outer wall of the four longitudinal ribs (14). A positioning component is connected to one end of the positioning column (1), and a locking component is connected to the other end of the positioning column (1).

2. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 1, characterized in that, The positioning component includes a first connecting seat (8), a first connecting hole (11) is provided on the side of the first connecting seat (8), and a plug-in structure is provided between one end of the positioning post (1) and the first connecting seat (8) for cooperation.

3. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 2, characterized in that, The plug-in structure includes a fan-shaped protrusion (9) on one side of the positioning post (1), a plug-in block (10) on the middle of one end of the positioning post (1) with the fan-shaped protrusion (9), a plug hole (7) in the middle of the first connecting seat (8) to form a plug-in fit with the plug hole (10), and an arc-shaped groove (6) on one side of the plug hole (7) to form a plug-in fit with the fan-shaped protrusion (9).

4. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 3, characterized in that, The locking assembly includes a second connecting seat (4), a connecting groove (17) is provided on one side of the second connecting seat (4), and a mounting hole (13) is provided at the other end of the positioning post (1), and a compensation pin (5) is slidably inserted into the mounting hole (13).

5. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 4, characterized in that, The second connecting seat (4) is provided with a bolt hole (15) on one side of the connecting groove (17), and the compensating pin (5) is provided with a screw hole (3).

6. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 5, characterized in that, The second connecting seat (4) has a second connecting hole (16) on its side.

7. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 6, characterized in that, The first connecting seat (8) and the second connecting seat (4) are both installed in the segment mold by bolts.

8. The positioning and installation device for spiral steel bars of subway tunnel segments according to claim 1, characterized in that, The connection points of the spiral steel bar (2) and the four longitudinal bars (14) are all tied with wire.

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