CN217518680U

CN217518680U - A steel grating structure that is used for face excavation to prevent collapsing in tunnel

Info

Publication number: CN217518680U
Application number: CN202221526174.8U
Authority: CN
Inventors: 喻江武; 周彬; 李良策; 梁庆; 殷小龙; 王平; 任裕廷
Original assignee: CCCC Second Highway Engineering Co Ltd
Current assignee: CCCC Second Highway Engineering Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-30
Anticipated expiration: 2032-06-17

Abstract

The utility model belongs to the technical field of the tunnel, especially, a steel grating structure that is used for tunnel face excavation to prevent landslide in tunnel, including steel grating, steel grating's surface and the surperficial looks adaptation of face, one side of steel grating is provided with prevents mechanism of collapsing. This a steel grating structure for caving is prevented in tunnel face excavation, when having a rest after having reached the inside excavation in tunnel through the setting, the position at the face is placed to this device of taking, control steel grating and face contact, adjust the angle of first slide bar, control first hindrance board and ground contact and control the top and the face contact extrusion that first U type frame promoted steel grating, control another hindrance board and the side contact in tunnel and promote steel grating and face bottom contact extrusion, thereby prevent the effect of caving, and simple structure convenient operation, can adjust first slide bar shrink in need not using and collect, and then work efficiency has been strengthened, the operation degree of difficulty has been reduced.

Description

A steel grating structure that is used for face excavation to prevent landslide in tunnel

Technical Field

The utility model relates to a tunnel technical field especially relates to a steel grating structure that is used for tunnel face excavation to prevent landslide in tunnel.

Background

Tunnels are engineering structures buried in the ground and are a form of human use of underground space. The tunnel can be divided into a traffic tunnel, a hydraulic tunnel, a municipal tunnel, a mine tunnel and a military tunnel.

The existing tunnel needs to control the excavated tunnel face to perform collapse protection after excavation and rest because the processing time is long and the tunnel is deep in excavation, the existing tunnel adopts a welding mode to perform support protection, the disassembly operation is difficult during excavation at the later stage, the operation difficulty is high, the working efficiency is low, so a steel grating structure for preventing collapse during excavation of the tunnel face in the tunnel is needed,

SUMMERY OF THE UTILITY MODEL

Based on current technical problem, the utility model provides a steel grating structure that is used for tunnel face excavation to prevent landslide in tunnel.

The utility model provides a steel grating structure that is used for tunnel face excavation to prevent collapse in tunnel, including steel grating, steel grating's surface and the surface looks adaptation of face, one side of steel grating is provided with prevents the mechanism of collapsing, prevent collapsing and send out the mechanism including first U type seat, two the mounting surface of first U type seat all with steel grating's relative fixed surface installation, two first U type seat is axis vertical distribution, two prevent that the mechanism of collapsing is respectively through two first U type seat carries out vertically and transversely supports the regulation.

Preferably, the relative inner wall of first U type seat all is connected with first pivot through the bearing rotation, the circular arc surface fixed mounting of first pivot has first commentaries on classics pipe, the circular arc surface one side fixed mounting of first commentaries on classics pipe has first U type frame.

Preferably, the opposite inner walls of the two sides of the first U-shaped frame are provided with first sliding grooves, the inner walls of the first sliding grooves are inserted with first sliding rods in a sliding mode, and two ends of each of the first sliding rods are fixedly provided with connecting support rods.

Preferably, the opposite inner walls of the two sides of the first U-shaped frame and the surfaces of the two first sliding rods are provided with limiting mounting holes, and the limiting mounting holes are distributed in a linear arrangement mode according to the axis of the first sliding rods.

Preferably, the inner wall of the limiting mounting hole is inserted with a limiting insertion rod in a sliding manner, the surface of the limiting insertion rod is in a T shape, and the circular arc surface of the bottom end of the limiting insertion rod is connected with a first nut in a threaded manner.

Preferably, a telescopic rod is connected to the central surface of one of the connecting support rods in a threaded manner, a second nut is connected to the arc surface of the telescopic rod in a threaded manner, and the second nut is located at the bottom of the connecting support rod.

Preferably, the bottom fixed mounting of telescopic link has the articulated shaft, the both ends of articulated shaft are rotated through the bearing and are connected with second U type seat, the bottom fixed mounting of second U type seat has the hindrance board, the resistance groove has been seted up on one side surface of hindrance board.

The utility model provides a beneficial effect does:

when having a rest after having reached the inside excavation in tunnel through setting up, this device of taking is placed in the position of face, control steel grating and face contact, adjust the angle of first slide bar, control first hindrance board and ground contact and control the top and the face contact extrusion that first U type frame promoted steel grating, control another hindrance board and the side contact in tunnel and promote steel grating and face bottom contact extrusion, thereby prevent the effect of landslide, and simple structure convenient operation, can adjust first slide bar shrink in need not using and collect, and then work efficiency has been strengthened, the operation degree of difficulty has been reduced.

Drawings

FIG. 1 is a schematic structural view of a steel grating structure for preventing collapse in tunnel face excavation;

FIG. 2 is an exploded view of a steel grating structure for landslide prevention in tunnel face excavation;

fig. 3 is an enlarged view of a structure at a in fig. 1 of a steel grating structure for preventing collapse in excavation of a tunnel face in a tunnel.

In the figure: 1. a steel grating; 2. a first U-shaped seat; 3. a first rotating shaft; 4. a first rotating pipe; 5. A first U-shaped frame; 6. a first chute; 7. a first slide bar; 8. connecting a support rod; 9. limiting mounting holes; 10. limiting the insertion rod; 11. a first nut; 12. a telescopic rod; 13. a second nut; 14. hinging a shaft; 15. a second U-shaped seat; 16. a baffle plate; 17. a resistance groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a steel grating structure for tunnel face excavation collapse prevention in tunnel, includes steel grating 1, the surface of steel grating 1 and the surface looks adaptation of tunnel face, one side of steel grating 1 is provided with the collapse prevention mechanism, the collapse prevention mechanism includes first U type seat 2, the mounting surface of two first U type seats 2 all with the relative surface fixed mounting of steel grating 1, two first U type seats 2 are the axis and distribute perpendicularly, two collapse prevention mechanisms carry out vertically and transversely through two first U type seats 2 respectively and support the regulation.

The opposite inner walls of the first U-shaped seats 2 are rotatably connected with first rotating shafts 3 through bearings, first rotating pipes 4 are fixedly arranged on the arc surfaces of the first rotating shafts 3, and first U-shaped frames 5 are fixedly arranged on one sides of the arc surfaces of the first rotating pipes 4, so that the effects of utilizing the first rotating shafts 3 to rotate for adjusting the angle and facilitating the first U-shaped frames 5 to adjust the rotating angle to support and prevent collapse are achieved; the two opposite inner walls of the two sides of the first U-shaped frame 5 are respectively provided with a first sliding chute 6, the inner walls of the first sliding chutes 6 are slidably inserted with first sliding rods 7, and two ends of each of the two first sliding rods 7 are respectively and fixedly provided with a connecting support rod 8, so that when the first sliding rods 7 are telescopically adjusted, the two first sliding rods 7 are controlled to be connected into a whole by sliding and limiting in the first sliding chutes 6 and utilizing the connecting support rods 8; spacing mounting hole 9 has all been seted up on the relative inner wall in both sides of first U type frame 5 and the surface of two first slide bars 7, and a plurality of spacing mounting holes 9 all distribute with the axis linear arrangement of first slide bar 7, have reached first slide bar 7 and have utilized spacing mounting hole 9 to control first slide bar 7 and the spacing fixed effect of first U type frame 5 after the flexible regulation.

The inner wall of spacing mounting hole 9 slides and pegs graft and has spacing inserted link 10, and the surface of spacing inserted link 10 is T word shape, and the bottom circular arc surface threaded connection of spacing inserted link 10 has first nut 11, has reached and has pegged graft in the inside of spacing mounting hole 9 through spacing inserted link 10, makes it spacing fixed, utilizes first nut 11 to lock spacing inserted link 10 and prevents that spacing inserted link 10 from dropping.

The central surface of one of the connecting support rods 8 is in threaded connection with a telescopic rod 12, the arc surface of the telescopic rod 12 is in threaded connection with a second nut 13, the second nut 13 is located at the bottom of the opposite connecting support rod 8, the second nut 13 is rotated to be loosened, the telescopic rod 12 is adjusted to stretch, and the second nut 13 is used for locking and limiting after the adjustment is finished; the bottom fixed mounting of telescopic link 12 has articulated shaft 14, and articulated shaft 14's both ends are rotated through the bearing and are connected with second U type seat 15, and the bottom fixed mounting of second U type seat 15 has hindering board 16, and resistance groove 17 has been seted up on a side surface of hindering board 16, has reached to set up and has hindered board 16 and resistance groove 17 and carry out the effect that increases frictional force and prevent to remove in the operation.

When having reached the inside excavation back rest in tunnel through the setting, this device of taking is placed the position at the face, control steel grating 1 and face contact, adjust first slide bar 7's angle, control first hindrance board 16 and ground contact and control the top and the face contact extrusion that first U type frame 5 promoted steel grating 1, control another hindrance board 16 and the side contact in tunnel and promote steel grating 1 and face bottom contact extrusion, thereby prevent the effect of landslide, and simple structure convenient operation, can adjust first slide bar shrink in need not using and collect, and then work efficiency has been strengthened, the operation degree of difficulty has been reduced.

The working principle is as follows: when having a rest after the inside excavation of tunnel, this device of taking is placed in the position of face, control steel grating 1 and face contact, adjust the angle of first slide bar 7, control first hindrance board 16 and ground contact and control the top and the face contact extrusion that first U type frame 5 promoted steel grating 1, control another hindrance board 16 and the side contact in tunnel and promote steel grating 1 and face bottom contact extrusion, and then control steel grating 1 and face laminating support prevent the collapse.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a steel grating structure that is used for face excavation to prevent landslide in tunnel, includes steel grating (1), its characterized in that: the anti-collapse device comprises a steel grating (1), wherein the surface of the steel grating (1) is matched with the surface of a tunnel face, one side of the steel grating (1) is provided with an anti-collapse mechanism, the anti-collapse mechanism comprises first U-shaped seats (2), the mounting surfaces of the first U-shaped seats (2) are fixedly mounted on the opposite surface of the steel grating (1), the first U-shaped seats (2) are vertically distributed along the axis, and the anti-collapse mechanisms are respectively used for longitudinally and transversely supporting and adjusting through the first U-shaped seats (2).

2. The steel grating structure for excavation collapse prevention of a tunnel face in a tunnel according to claim 1, wherein: the relative inner wall of first U type seat (2) all is connected with first pivot (3) through the bearing rotation, the circular arc fixed surface of first pivot (3) installs first rotating pipe (4), the circular arc surface one side fixed mounting of first rotating pipe (4) has first U type frame (5).

3. The steel grating structure for excavation collapse prevention of the tunnel inner face according to claim 2, wherein: first spout (6) have all been seted up to the relative inner wall in both sides of first U type frame (5), the inner wall slip grafting of first spout (6) has first slide bar (7), two equal fixed mounting in both ends of first slide bar (7) has joint support pole (8).

4. The steel grating structure for excavation collapse prevention of the tunnel inner face according to claim 3, wherein: the relative inner wall in both sides of first U type frame (5) and two spacing mounting hole (9) have all been seted up on the surface of first slide bar (7), and are a plurality of spacing mounting hole (9) all distribute with the axis linear arrangement of first slide bar (7).

5. The steel grating structure for excavation collapse prevention of the tunnel inner face according to claim 4, wherein: the inner wall of the limiting mounting hole (9) is connected with a limiting insertion rod (10) in a sliding insertion mode, the surface of the limiting insertion rod (10) is in a T shape, and the bottom end circular arc surface of the limiting insertion rod (10) is connected with a first nut (11) in a threaded mode.

6. The steel grating structure for excavation collapse prevention of the tunnel inner face according to claim 3, wherein: the central surface of one of the connecting support rods (8) is in threaded connection with a telescopic rod (12), the arc surface of the telescopic rod (12) is in threaded connection with a second nut (13), and the second nut (13) is located at the bottom of the connecting support rod (8).

7. The steel grating structure for excavation collapse prevention of the tunnel inner face according to claim 6, wherein: the bottom fixed mounting of telescopic link (12) has articulated shaft (14), the both ends of articulated shaft (14) are rotated through the bearing and are connected with second U type seat (15), the bottom fixed mounting of second U type seat (15) has hindering board (16), resistance groove (17) have been seted up on a side surface of hindering board (16).