Tunnel arch frame pre-assembly connector

Abstract

The utility model provides a tunnel arch frame pre-assembly connector, relates to a tunnel supporting technology, and particularly discloses two groups of clamping structures buckled on an arch frame, each clamping structure comprises two clamping seats which are arranged in pairs, clamping grooves matched with the arch frame are formed in the opposite side walls of the two clamping seats, and the clamping seats are clamped in the clamping grooves. A distance adjusting structure is installed between the two clamping bases located in the same clamping structure. A rotating structure is mounted between any clamping seat in one clamping structure and the opposite clamping seat in the other clamping structure; through the distance adjusting structure, the rotating structure and the clamping structure, the arch frame can be pre-assembled and connected outside a hole and can be rapidly installed in the hole, the time of workers on a tunnel face is shortened, and the safety risk is reduced; the mounting positions of part of the arch frames are rotationally adjusted, so that the arch frames can be tightly attached to surrounding rocks for mounting; the effective support of the tunnel lagging jack to the tunnel is improved, and the safety of the construction environment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel support technical field, specifically, relate to a kind of tunnel arch pre-assembled connector. BACKGROUND

[0002] Among many schemes of tunnel support construction, tunnel arch construction is crucial to tunnel safety, tunnel arch itself has certain strength, can resist bending, itself texture is relatively hard, after tunnel arch construction is formed, tunnel working environment can be obviously improved.

[0003] Tunnel arch is generally formed by a set of whole by a plurality of arch segments, and the arch segment is generally prefabricated in factory according to tunnel design size, and the arch segment is transported to the scene for assembly after prefabrication.

[0004] But in the process of installing arch in tunnel, the assembly of arch and arch is complex, and the butt joint precision of arch and arch cannot be guaranteed;After the butt joint of arch and arch is completed, the actual size of tunnel deviates from the design size of arch structure, which easily leads to that arch cannot be installed closely to surrounding rock, resulting in that arch foot of tunnel arch is likely to be suspended, so that tunnel arch cannot form effective support to tunnel, and the construction progress of tunnel is affected;And when the above structure is installed in hole, the operating worker is exposed to the time of face for a long time, which has great influence on the personal safety of operating worker. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of tunnel arch pre-assembled connector, and it can solve the problems raised in the above background art for the deficiencies of prior art.

[0006] The technical scheme of the utility model is realized as follows:

[0007] The utility model provides a kind of tunnel arch pre-assembled connector, including two groups of clamping structures that are buckled on arch, clamping structure includes two clamping seats that are arranged in pairs, the opposite side wall of two clamping seats is provided with the clamping groove that is adapted to arch, and the two clamping seats in the same clamping structure are provided with distance adjusting structure between them;Any one clamping seat in one clamping structure and the opposite clamping seat in another clamping structure are provided with rotating structure between them.

[0008] In some technical schemes of the utility model, distance adjusting structure includes fixed shaft rod, and the side wall of two clamping seats in the same clamping structure is provided with fixed screw nut that is threadedly connected with fixed shaft rod.

[0009] In some technical schemes of the utility model, the rotating structure comprises two mounting seats arranged in pairs and a rotating shaft, the two mounting seats are respectively mounted on the side walls of the clamping seats arranged oppositely in the two clamping structures, and the opposite side walls of the two mounting seats are both provided with rotating sleeves, and the rotating shaft is rotatably arranged in the two rotating sleeves.

[0010] In some technical schemes of the utility model, the side walls of the mounting seat are both provided with relative motion limiting structures for limiting the two rotating sleeves.

[0011] In some technical schemes of the utility model, the limiting structure comprises a locking rod, the side wall of the mounting seat is provided with a mounting hole, the locking rod is arranged in the mounting hole, the axis of the mounting hole is perpendicular to the axis of the rotating sleeve, the outer side walls of the two rotating sleeves are both provided with a plurality of notches, and the notches on the two rotating sleeves are aligned to form a locking groove matched with the end of the locking rod after the two rotating sleeves are rotated relative to each other.

[0012] In some technical schemes of the utility model, a limiting spring is arranged on the outer side wall of the locking rod, one end of the limiting spring is connected with the mounting seat, and the other end of the limiting spring is connected with the outer side wall of the locking rod.

[0013] In some technical schemes of the utility model, a wedge-shaped groove is arranged on one of the inner side walls of the clamping groove, a locking strip is arranged in the wedge-shaped groove, and a pad is arranged on the locking strip.

[0014] Compared with the prior art, the utility model has at least the following advantages or beneficial effects: the distance adjusting structure, the rotating structure and the clamping structure enable the arch frame to be pre-assembled and connected outside a hole and quickly installed in the hole, the time of workers in the working face is shortened, and the safety risk is reduced; the distance adjusting structure allows the clamping structure to be buckled on arch frames of different sizes, and the use range of the structure is improved; the fixed clamping seat prevents the clamping seat from sliding on the arch frame and reduces the looseness or misalignment of the joint of the arch frame segments; the rotating structure allows the installation positions of part of the arch frames to be adjusted by rotating when the pre-assembled arch frame segments are installed in the over-excavated tunnel wall, so that the arch frames can be tightly installed against the surrounding rock; the effective support of the tunnel arch frame on the tunnel is improved, and the safety of the construction environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the connection structure diagram of the arch frame and the clamping seat in the utility model.

[0016] Figure 2 It is the connection structure diagram of the arch frame and the clamping seat in the utility model.

[0017] Figure 3 It is the three-dimensional structure diagram of the clamping seat in the utility model.

[0018] Figure 4It is the front view structural schematic view of the clamping seat in the utility model.

[0019] Figure 5 It is the partial sectional view structural schematic view of the mounting seat and the locking rod in the utility model.

[0020] Reference signs: 1, arch frame; 2, clamping seat; 3, connecting plate; 4, mounting seat; 5, fixed shaft rod; 6, fixed screw sleeve; 7, rotating sleeve; 8, rotating shaft; 9, locking rod; 10, limiting spring; 11, cushion block; 12, locking strip. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0023] EMBODIMENT

[0024] The utility model provides a kind of tunnel arch frame pre-assembled connector, such as Figure 1 , Figure 2As shown, including two groups of clamping structure buckled on the arch 1, the clamping structure includes a pair of two clamping seat 2, two clamping seat 2 opposite side wall is provided with the clamping groove matched with arch 1, through the above design can make the cross section of clamping seat 2 is the steel structure of “Fang” shape, on the construction site is convenient to obtain, without additional design, through the above design also improves the structural strength of clamping seat 2, increases its service life;Two clamping seat 2 between the same clamping structure is installed with distance adjusting structure, the distance adjusting structure can make the installation spacing between clamping seat 2 be controlled, facilitate the clamping structure can be buckled on the arch 1 of different size, improve the use range of the structure, and the distance adjusting structure arranged can also fix two clamping seat 2 in the same clamping structure in the arch 1, prevent clamping seat 2 from sliding on the arch 1, improve the connection strength of the clamping structure and the arch 1, ensure that the tunnel arch formed by the assembly of multiple arch segments does not appear loose or misalignment at the joint of any two adjacent arch segments, cause the tunnel arch to not effectively support the tunnel, affect the construction of the tunnel;Any one of the clamping seat 2 in one of the clamping structures and the clamping seat 2 opposite to it in the other clamping structure are installed with a rotating structure. The rotating structure can make the tunnel arch formed by the assembly of multiple arch segments pre-assembled and connected outside the hole, folded and transported to the working face, and then rotated to the predetermined position after the corresponding arch segment is rotated. Any two arch segments can be connected by bolts. This can solve the problem of complicated assembly of arches in the hole, shorten the time of workers exposed to the working face, compress the time from tunnel blasting to completion of support, and realize the mechanized and rapid installation of the arch machine 1.

[0025] Preferably, the two ends of the arch 1 are welded with a connecting plate 3, and the connecting plate 3 is provided with a through hole.

[0026] In some technical solutions of the present application, the distance adjusting structure includes a fixed shaft 5, which is a long screw rod. The side walls of the two clamping seats 2 in the same clamping structure are provided with fixed nuts 6 which are threadedly connected with the fixed shaft 5. The fixed nuts 6 are fixedly connected with the outer side walls of the clamping seats 2 by welding. Rotating the fixed shaft 5 can fix the two clamping seats 2 in the same clamping structure on the arch 1, prevent the clamping seats 2 from sliding on the arch 1, and improve the connection strength of the clamping structure and the arch 1. The threaded connection of the fixed shaft 5 and the fixed nut 6 also has the function of self-locking the above structure.

[0027] Preferably, the fixed shaft 5 is a damping bolt. The working principle of the damping bolt may involve the design of internal friction, for example, there is a rotatable friction plate or washer inside the damping nut, which uses friction to increase the damping effect of threaded connection.

[0028] In some technical schemes of the utility model, the rotating structure includes two installation bases 4 arranged in pairs and a rotating shaft 8, the rotating shaft 8 is an optical axis, the friction between the rotating shaft 8 and the rotating sleeve 7 can be reduced, the service life of the two is increased, the two installation bases 4 are respectively installed on the side walls of the clamping bases 2 located in the two clamping structures and arranged oppositely, the installation base 4 is fixedly connected with the clamping base 2 in a welding mode, the rotating sleeve 7 is installed on the opposite side walls of the two installation bases 4, and the rotating shaft 8 is rotatably arranged in the two rotating sleeves 7. The tunnel arch formed by assembling a plurality of arch segments can be pre-assembled and connected outside a hole, folded and transported to a working face, then corresponding arch segments are rotated to predetermined positions, and then any two arch segments are connected through bolts, so that the problem that the arch 1 is complicated to assemble in a hole is solved, the time that workers are exposed to the working face is shortened, the time from tunnel blasting to supporting completion is compressed, and the mechanized and rapid installation of the arch 1 is realized.

[0029] And the rotating structure can make the pre-assembled arch segment be installed in the over-excavated tunnel wall, the installation position of part of the arch can be adjusted through the rotating structure so that the arch can be installed closely to the surrounding rock, the tunnel arch can effectively support the tunnel, and the safety of the construction environment is ensured.

[0030] In some technical schemes of the utility model, the side wall of the installation base 4 is provided with a relative motion limiting structure for limiting the two rotating sleeves 7.

[0031] In some technical schemes of the utility model, the limiting structure includes a locking rod 9, the side wall of the installation base 4 is provided with a mounting hole, the locking rod 9 is arranged in the mounting hole, the axis of the mounting hole is perpendicular to the axis of the rotating sleeve 7, the outer side wall of the two rotating sleeves 7 is provided with a plurality of notches, and the notches on the two rotating sleeves 7 are aligned to form a locking groove matched with the end of the locking rod 9 after the two rotating sleeves 7 are rotated relative to each other. After the pre-assembled arch segment reaches the predetermined installation position under the adjustment of the rotating structure, the locking rod 9 arranged in the installation base 4 can be inserted into the locking groove formed by the notches on the two rotating sleeves 7, the two rotating sleeves 7 are prevented from continuing to rotate, the two clamping structures can be locked, any two adjacent arch segments are prevented from suddenly falling back after reaching the predetermined installation position under the adjustment of the rotating structure, and the installation precision of the arch segment is improved.

[0032] In some technical solutions of this utility model, a limiting spring 10 is sleeved on the outer wall of the locking rod 9. One end of the limiting spring 10 is connected to the mounting base 4, and the other end of the limiting spring 10 is connected to the outer wall of the locking rod 9. After the pre-assembled arch frame segment reaches the predetermined installation position under the adjustment of the rotating structure, the limiting spring 10 can push the locking rod 9, which is provided in the mounting base 4, into the locking groove formed by aligning the notches located on the two rotating sleeves 7, preventing the two rotating sleeves 7 from continuing to rotate, thereby locking the two snap-fit ​​structures.

[0033] In some technical solutions of this utility model, a wedge-shaped groove is provided on one of the inner sidewalls of the card slot, and a locking strip 12 is installed in the wedge-shaped groove. The locking strip 12 is adapted to the wedge-shaped groove and the two are fitted with a clearance. A pad 11 is installed on the locking strip 12. The pad 11 is a rubber pad, which can increase the friction of the card seat 2 fastening to the arch frame 1, prevent the card seat 2 from falling off the arch frame 1, and also increase the durability of the card seat 2.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tunnel arch pre-assembly connector, characterized in that, Two sets of clamping structures are buckled on the arch frame (1), each of the clamping structures comprises two clamping seats (2) arranged in pairs, the opposite side walls of the two clamping seats (2) are each provided with a clamping groove matched with the arch frame (1), and a distance adjusting structure is mounted between the two clamping seats (2) in the same clamping structure; a rotating structure is mounted between any one clamping seat (2) in one of the clamping structures and the clamping seat (2) opposite to it in the other clamping structure.

2. A pre-assembled tunnel arch connector according to claim 1, wherein, The distance adjusting structure comprises a fixed shaft rod (5), and the side walls of the two clamping seats (2) in the same clamping structure are each provided with a fixed screw sleeve (6) threadedly connected with the fixed shaft rod (5).

3. A pre-assembled tunnel arch connector according to claim 1, wherein, The rotating structure comprises two mounting seats (4) arranged in pairs and a rotating shaft (8), the two mounting seats (4) are respectively mounted on the side walls of the clamping seats (2) arranged opposite to each other in the two clamping structures, the opposite side walls of the two mounting seats (4) are each provided with a rotating sleeve (7), and the rotating shaft (8) is rotatably arranged in the two rotating sleeves (7).

4. A pre-assembled tunnel arch connector according to claim 3, wherein, The side walls of the mounting seat (4) are each provided with a limiting structure for limiting the relative movement of the two rotating sleeves (7).

5. A pre-assembled tunnel arch connector according to claim 4, wherein, The limiting structure comprises a locking rod (9), the side wall of the mounting seat (4) is provided with a mounting hole, the locking rod (9) is arranged in the mounting hole, the axis of the mounting hole is perpendicular to the axis of the rotating sleeve (7), the outer side walls of the two rotating sleeves (7) are each provided with a plurality of notches, and the notches on the two rotating sleeves (7) are aligned to form a locking groove matched with the end of the locking rod (9) after the two rotating sleeves (7) are rotated relative to each other.

6. A pre-assembled tunnel arch connector according to claim 5, wherein, A limiting spring (10) is sleeved on the outer side wall of the locking rod (9), one end of the limiting spring (10) is connected with the mounting seat (4), and the other end of the limiting spring (10) is connected with the outer side wall of the locking rod (9).

7. A pre-assembled tunnel arch connector according to any one of claims 1 to 6, wherein, A wedge-shaped groove is formed in one of the inner side walls of the clamping groove, a locking strip (12) is mounted in the wedge-shaped groove, and a pad (11) is mounted on the locking strip (12).

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