Tunnel segment connecting and fixing device
By employing an anti-loosening mechanism combining arc-shaped segment bolts and nuts in tunnel segment connections, the problem of nut loosening was solved, thereby improving the safety and stability of tunnel segment connections.
Patent Information
- Application Number
- CN202520142211.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-21
AI Technical Summary
When existing tunnel segments are fixed together with segment bolts of an arc-shaped structure, the nuts lack anti-loosening measures and are prone to loosening, leading to safety hazards.
A tunnel segment connection and fixing device was designed, which uses a combination of arc-shaped segment bolts and nuts, combined with a limit plate, slider and spring anti-retraction mechanism to prevent the nuts from loosening.
This effectively prevents nuts from loosening, improves the safety and stability of tunnel segment connections, and avoids safety accidents.
Smart Images
Figure CN223608550U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a tunnel segment installation technical field, concretely is a kind of tunnel segment connecting fixing device. BACKGROUND
[0002] In tunnel construction, there is a kind of equipment engaged in originating and tunneling machine called shield machine, with the functions of excavating and cutting soil, conveying soil, assembling tunnel lining etc.;Shield machine is assembled by several tunnel segments when tunnel lining, and the tunnel segments are connected and fastened by a screw, and the assembled pipeline is cylindrical. Excavation can effectively control ground subsidence, reduce the impact on ground buildings and not affect water traffic when excavating underwater.
[0003] The existing tunnel segments are usually fixed and connected by arc-shaped segment bolts, but the nut of the segment bolt lacks anti-backout measures after fixing two tunnel segments, and once the nut loosens, it will cause a major safety accident. Therefore, a tunnel segment connecting and fixing device is proposed. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a tunnel segment connecting and fixing device to solve the problems raised in the above background.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a tunnel segment connecting and fixing device, comprising a first tunnel segment and a second tunnel segment, the first tunnel segment and the second tunnel segment are connected by two fixing mechanisms, the fixing mechanism is composed of a connecting hole, a matching hole, a segment bolt and a nut, the first tunnel segment and the second tunnel segment have connecting holes and matching holes respectively on the side walls close to each other, the other ends of the connecting holes and the matching holes respectively extend to the bottoms of the first tunnel segment and the second tunnel segment, the segment bolt is arc-shaped, the segment bolt is adapted to the connecting hole and the matching hole, the end of the segment bolt is threaded with a nut, the bottom of the second tunnel segment is provided with an anti-backout mechanism acting on the nut, the anti-backout mechanism is composed of a limiting plate, a sliding block and a spring.
[0006] As a further preferred embodiment of the present technical solution, a first recess is formed in the opening position of the connecting hole at the bottom of the first tunnel segment, and the first recess is used to accommodate the cap of the segment bolt.
[0007] As a further preferred embodiment of the present technical solution, a second recess is formed in the opening position of the matching hole at the bottom of the second tunnel segment, and the second recess is used to accommodate the nut.
[0008] As a further preferred technical solution, the two limiting plates are symmetrically distributed on both sides of the nut, the bottom of the limiting plate is fixedly connected with a sliding block, the sliding block is slidingly installed in a sliding groove formed in the bottom of the second groove, a spring is fixedly installed at the inner cavity bottom of the sliding groove, and the other end of the spring is fixedly connected to the side wall of the sliding block.
[0009] As a further preferred technical solution, the distance between the two limiting plates is less than the diameter of the circumscribed circle of the nut.
[0010] As a further preferred technical solution, the distance between the two limiting plates is greater than the diameter of the inscribed circle of the nut.
[0011] As a further preferred technical solution, the hole diameter of the connecting hole and the matching hole is equal, and the connecting hole and the matching hole are both arc-shaped structures.
[0012] The utility model provides a tunnel segment connecting fixing device, has the following beneficial effects:
[0013] The utility model discloses a connecting hole, a matching hole, a segment bolt and a nut can fix two adjacent tunnel segments together, the setting prevents the mechanism and can protect the nut, avoids the nut to appear to loosen. ACCURACY OF DRAWINGS
[0014] Figure 1 It is the schematic diagram of the whole structure of the utility model;
[0015] Figure 2 It is the structural schematic diagram of the first tunnel segment and the second tunnel segment in the utility model;
[0016] Figure 3 It is the structural schematic diagram of A in the utility model; Figure 2
[0017] Figure 4 It is the split schematic diagram of the preventing mechanism in the utility model;
[0018] In the drawing: 1, the first tunnel segment; 2, the second tunnel segment; 3, connecting hole; 4, matching hole; 5, first recess; 6, second recess; 7, segment bolt; 8, nut; 9, limiting plate; 10, sliding block; 11, sliding groove; 12, spring. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.
[0020] The utility model provides technical scheme: as Figures 1 to 4 As shown in the embodiment, the tunnel segment connecting and fixing device comprises a first tunnel segment 1 and a second tunnel segment 2, the first tunnel segment 1 and the second tunnel segment 2 are connected through two fixing mechanisms, the fixing mechanism is composed of a connecting hole 3, a matching hole 4, a segment bolt 7 and a nut 8, the first tunnel segment 1 and the second tunnel segment 2 are respectively provided with the connecting hole 3 and the matching hole 4 on the side walls close to each other, the other ends of the connecting hole 3 and the matching hole 4 respectively extend to the bottoms of the first tunnel segment 1 and the second tunnel segment 2, the hole diameters of the connecting hole 3 and the matching hole 4 are equal, the connecting hole 3 and the matching hole 4 are both arc structures, the segment bolt 7 is an arc structure, the segment bolt 7 is matched with the connecting hole 3 and the matching hole 4, the end of the segment bolt 7 is threadedly sleeved with the nut 8, the bottom of the second tunnel segment 2 is provided with an anti-back-off mechanism acting on the nut 8, the anti-back-off mechanism is composed of a limiting plate 9, a sliding block 10 and a spring 12, the bottom of the first tunnel segment 1 is provided with a first groove 5 at the opening position of the connecting hole 3, the first groove 5 is used for accommodating the nut of the segment bolt 7, and the bottom of the second tunnel segment 2 is provided with a second groove 6 at the opening position of the matching hole 4, the second groove 6 is used for accommodating the nut 8.
[0021] Wherein, the two limiting plates 9 are symmetrically distributed on the two sides of the nut 8, the bottom of the limiting plate 9 is fixedly connected with the sliding block 10, the sliding block 10 is slidingly installed in the sliding groove 11 arranged at the bottom of the second groove 6, the inner cavity bottom of the sliding groove 11 is fixedly installed with the spring 12, and the other end of the spring 12 is fixedly connected to the side wall of the sliding block 10.
[0022] Under the extrusion of the spring 12, the two limiting plates 9 will extend out of the sliding groove 11, so as to be clamped on the two sides of the nut 8, when the nut 8 is installed, the limiting plate 9 can be pressed into the sliding groove 11, so as to avoid the influence of the limiting plate 9 on the installation of the nut 8.
[0023] When the nut 8 is installed, due to the difference in the rotation angle of the nut 8, it is impossible to ensure that the limiting plate 9 is clamped on the two sides of the nut 8, therefore, the following design is made:
[0024] Wherein, the distance between the two limiting plates 9 is less than the diameter of the circumscribed circle of the nut 8, and the distance between the two limiting plates 9 is greater than the diameter of the inscribed circle of the nut 8.
[0025] In this way, only the two limiting plates 9 are located not far away from the two sides of the nut 8, so that, due to the distance between the two limiting plates 9 being less than the diameter of the circumscribed circle of the nut 8, the side wall of the nut 8 will inevitably contact the limiting plate 9 in the process of loosening and rotating of the nut 8, at this time, the limiting plate 9 will prevent the nut 8 from further loosening.
[0026] The utility model provides a kind of tunnel segment connecting and fixing device, specific working principle as follows:
[0027] In use, after the first tunnel segment 1 and the second tunnel segment 2 are spliced, the connecting holes 3 and the matching holes 4 are aligned with each other, the segment bolts 7 can be inserted into the connecting holes 3 and the matching holes 4 in sequence by the staff, and the nuts 8 can be installed at the ends of the segment bolts 7 by being rotated, so that the first tunnel segment 1 and the second tunnel segment 2 can be fixed together, and when the nuts 8 are installed, the limiting plates 9 can be pressed into the sliding grooves 11 to avoid affecting the installation of the nuts 8, after the nuts 8 are installed, the limiting plates 9 are loosened, and under the extrusion of the springs 12, the two limiting plates 9 will extend out of the sliding grooves 11, at this time, the two limiting plates 9 will be located on the two sides of the nuts 8, so that the nuts 8 can be prevented from loosening.
[0028] It should be noted that the other three sides of the tunnel segment are spliced by the above method, which will not be described here.
[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A tunnel segment connecting fixture comprising a first tunnel segment (1) and a second tunnel segment (2), characterized in that: The first tunnel segment (1) and the second tunnel segment (2) are connected by two fixing mechanisms, the fixing mechanism is composed of a connecting hole (3), a matching hole (4), a segment bolt (7) and a nut (8), the first tunnel segment (1) and the second tunnel segment (2) are respectively provided with a connecting hole (3) and a matching hole (4) on the side wall close to each other, the other end of the connecting hole (3) and the matching hole (4) extends to the bottom of the first tunnel segment (1) and the second tunnel segment (2) respectively, the segment bolt (7) is an arc structure, the segment bolt (7) is matched with the connecting hole (3) and the matching hole (4), the end of the segment bolt (7) is threaded with the nut (8), the bottom of the second tunnel segment (2) is provided with an anti-retreating mechanism acting on the nut (8), the anti-retreating mechanism is composed of a limiting plate (9), a sliding block (10) and a spring (12).
2. A tunnel segment connecting and fixing device according to claim 1, characterized in that: The bottom of the first tunnel segment (1) is provided with a first groove (5) at the opening position of the connecting hole (3), and the first groove (5) is used for accommodating the nut of the segment bolt (7).
3. A tunnel segment connecting and fixing device according to claim 1, characterized in that: The bottom of the second tunnel segment (2) is provided with a second groove (6) at the opening position of the matching hole (4), and the second groove (6) is used for accommodating the nut (8).
4. A tunnel segment connecting and fixing device according to claim 3, characterized in that: The two limiting plates (9) are symmetrically distributed on both sides of the nut (8), the bottom of the limiting plate (9) is fixedly connected with the sliding block (10), the sliding block (10) is slidingly installed in the sliding groove (11) formed in the bottom of the second groove (6), the inner cavity of the sliding groove (11) is fixedly installed with the spring (12), and the other end of the spring (12) is fixedly connected to the side wall of the sliding block (10).
5. A tunnel segment connecting and fixing device according to claim 1, characterized in that: The distance between the two limiting plates (9) is less than the diameter of the circumscribed circle of the nut (8).
6. A tunnel segment connecting and securing device according to claim 1, wherein: The distance between the two limiting plates (9) is greater than the diameter of the inscribed circle of the nut (8).
7. A tunnel segment connecting and securing device according to claim 1, wherein: The hole diameter of the connecting hole (3) and the matching hole (4) is equal, and the connecting hole (3) and the matching hole (4) are arc structures.