CN216920082U

CN216920082U - Protection mechanism for tunnel backslope

Info

Publication number: CN216920082U
Application number: CN202123398262.2U
Authority: CN
Inventors: 靳俊奇; 陈德洲; 李钊; 方永桥; 余隆友; 罗勋; 曾斌; 徐志学; 黄福斌; 杜志化; 顾磊; 张乙; 黎显江; 吴冬英; 游冬
Original assignee: Guizhou Road and Bridge Group Co Ltd
Current assignee: Guizhou Road and Bridge Group Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-08
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a protection mechanism for a tunnel uphill slope, which comprises a positioning structure and a protective net, wherein the protective net is fixed on the uphill slope by the positioning structure; the positioning structure comprises a positioning pile, a screw rod and an inner support rod; one end of the positioning pile is provided with a positioning hole with internal threads, and the other end of the positioning pile is of a pointed end structure; the screw rod is in threaded connection with the positioning hole, a groove is formed in the thread section of the screw rod, and a rotatable rotating block is arranged on the surface of the groove; the inner supporting rod is rotatably connected to the rotating block; and a sliding groove for sliding the inner supporting rod out of the positioning pile is formed in the side wall of the positioning pile. In addition, the utility model also comprises a connecting column and a partition net, wherein the partition net is connected to the connecting column. The tunnel protection device is simple in structure and convenient and fast to operate, and the protection net can be well fixed on the surface of the tunnel uphill slope by utilizing the positioning structure; in addition, the partition net provided by the utility model can block falling rocks, so that the protection effect of the uphill slope is enhanced.

Description

Protection mechanism for tunnel backslope

Technical Field

The utility model relates to the field of tunnel uphill protection, in particular to a protection mechanism for tunnel uphill.

Background

With the increasing of highway projects, the difficulty of tunnel engineering construction is increasing, tunnels are built underground or in mountains, and various protective nets are developed in order to prevent serious damage to constructors, vehicles, structures and the like caused by rockfall due to instability of slopes on the sides and on the mountains of a tunnel opening.

The traditional protective net mainly comprises an active protective net and a passive protective net, various flexible nets mainly comprising a steel wire rope net cover and wrap the surface of a required protection upward slope or are arranged at the bottom of the upward slope according to the situation of a fence so as to limit the weathering stripping and collapse of slope rock masses or control falling rocks to move in a small range, thereby preventing the falling rocks on the upward slope from sliding down to cause loss to personal property, but when the steel wire rope net is damaged, the falling rocks can slide down from the surface of the steel wire rope net, still threaten the personal property, and the shortcoming of not slowing down the impact of the falling rocks is overcome.

In summary, a protection mechanism for tunnel uphill protection is urgently needed to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a protection mechanism for a tunnel uphill slope, which has the following specific technical scheme:

the utility model provides a protection machanism for tunnel adverse slope, includes location structure and protection network, the spud will the protection network is fixed on the adverse slope.

Specifically, the positioning structure comprises a positioning pile, a screw rod and an inner support rod; one end of the positioning pile is provided with a positioning hole with internal threads, and the other end of the positioning pile is of a pointed structure; the screw rod is in threaded connection with the positioning hole; a groove is arranged on the thread section of the screw rod, and the groove is provided with a rotatable rotating block; the inner supporting rod is rotatably connected to the rotating block; and a sliding groove for sliding the inner supporting rod out of the positioning pile is formed in the side wall of the positioning pile.

Specifically, the positioning structure further comprises a connecting table, wherein the connecting table comprises a first end and a second end; the first end is of a threaded columnar structure, and the second end is detachably connected with the opening end of the positioning hole of the positioning pile; and the first end is in threaded connection with a pressing plate for fixing the protective net.

Preferably, the second end is provided with an insertion rod, and the insertion rod is inserted into the positioning hole.

Specifically, a limiting plate is arranged on the second end, and a reinforcing rib is fixedly connected between the limiting plate and the side wall of the positioning pile; a group of through holes are uniformly formed in the circumference of the limiting plate; a threaded hole matched with the through hole is formed in the positioning pile around the opening of the positioning hole; the connecting platform is connected with the positioning pile through the through hole bolt on the limiting plate.

Specifically, the protection mechanism further comprises a connecting column and a separating net; the connecting column is sleeved and fixed on the first end through a bolt; the connecting column is provided with a rope clamp, and the rope clamp fixes the partition net on the side wall of the connecting column.

Specifically, one end of the screw rod, which is close to the opening of the positioning hole, is a clamping part; the clamping part is of a lock nut structure.

Preferably, the protective net and the partition net are in a steel wire net structure.

Preferably, the surface of one side of the inner supporting rod is provided with an anti-skidding structure; the anti-slip structure is a step arranged in parallel.

Preferably, the positioning pile is provided with at least two sliding grooves which are circumferentially arranged around the side surface of the positioning pile 1, and the sliding grooves are provided with inclined plane convex blocks.

Preferably, the positioning structure comprises at least two inner supporting rods matched with the sliding grooves and is respectively positioned in different sliding grooves; the inner supporting rod is provided with an inclined surface, and the inclined surface on the inner supporting rod is attached to the contact surface of the inclined surface bump.

The technical scheme of the utility model has the following beneficial effects:

the positioning structure is arranged and comprises the positioning pile, the screw and the inner support rod, and the tip at the lower end of the positioning pile is arranged to drive the positioning pile into the ground better. The screw rod is provided with an annular groove and a rotating block, and the inner stay bar is rotationally connected to the rotating block; the sleeve is combined with a lock nut structure on the screw rod to rotate the screw rod positioned in the positioning hole, so that the screw rod displacement is realized; along with the movement of the screw rod, the inner supporting rod slides out of the sliding groove in the positioning pile, so that the aim of grabbing a soil layer is fulfilled, and a better positioning effect is achieved. In addition, the inner support rods are provided with steps for grabbing the soil layer, so that the soil layer can be grabbed well, and the stability of the positioning piles is guaranteed.

The utility model is provided with the connecting platform which is connected with the positioning pile, and the positioning pile and the connecting platform are fixed through a plurality of groups of bolts. The threaded columnar structure threaded connection of connection bench area screwed has the clamp plate, the centre gripping of clamp plate and limiting plate the protection network is fixed the protection network on the surface of uphill slope betterly, guarantees the protection network with firm the connection between the spud.

The utility model is provided with the connecting column and the isolating net, the connecting column is sleeved on the columnar structure and is fixed by the bolt, and the design of the isolating net can better intercept falling rocks on the uphill slope; the partition net and the protective net arranged in the tunnel protection device can be steel wire meshes which are firm enough and not easy to damage, and can stably protect the tunnel from ascending for a long time.

According to the utility model, the inclined plane bump is arranged on the sliding groove, and the inclined plane matched with the inclined plane bump is arranged on the inner supporting rod, so that the positioning failure caused by the fact that the inner supporting rod is clamped in the sliding groove and cannot slide out is prevented.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the protective structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a spud;

FIG. 3 is a schematic view of the structure of the connection station;

FIG. 4 is a schematic structural view of a connecting column;

FIG. 5 is a schematic view of the screw structure;

fig. 6 is a schematic structural view of the support bar.

Wherein, 1, positioning the pile; 1-1 chute; 1-2 inclined plane projection; 2, a screw rod; 2-1, grooves; 2-2, turning blocks; 2-3 locking nut structure; 3, inner supporting rods; 3-1 step; 4, positioning holes; 4-1 threaded hole; 5, connecting the platforms; 5-1 columnar structure; 5-2, pressing a plate; 5-3 inserting rods; 5-4 limiting plates; 5-5 through holes; 6, connecting columns; 6-1 rope clamp; 7 isolating the net.

Detailed Description

Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.

Referring to fig. 1 to 6, the present embodiment provides a protection mechanism for a tunnel uphill slope, including a positioning structure and a protection net; the positioning structure fixes the protective net on the upward slope.

Specifically, the positioning structure comprises a positioning pile 1, a screw rod 2 and an inner support rod 3.

Specifically, one end of the positioning pile 1 is provided with a positioning hole 4 with internal threads, and the other end of the positioning pile is of a pointed structure; the design of tip structure makes spud 1 can insert deeper soil layer, has improved the stability of spud.

Specifically, the screw rod 2 is in threaded connection with the positioning hole 4, a groove 2-1 is formed in the threaded section of the screw rod 2, and the groove 2-1 is provided with a rotatable rotating block 2-2; the inner supporting rod 3 is rotatably connected to the rotating block 2-2; and a sliding groove 1-1 for sliding the inner supporting rod 3 out of the positioning pile is formed in the side wall of the positioning pile 1.

Further, when the screw rod 2 rotates and displaces in the positioning hole 4, the inner support rod 3 can be driven to displace; when the screw rod 2 displaces to the deep part of the stratum, the inner stay bar 3 slides out of the sliding groove 1-1, so that the soil layer is grabbed and positioned; at this time, the positioning pile is well fixed in the soil layer.

In addition, the positioning structure further comprises a connecting table 5, wherein the connecting table 5 comprises a first end and a second end; the first end is a threaded columnar structure 5-1, and the second end is detachably connected with the open end of the positioning pile 1; the columnar structure 5-1 is in threaded connection with a pressing plate 5-2 for fixing the protective net.

Preferably, the second end is provided with an insertion rod 5-3, and the insertion rod 5-3 is inserted into the positioning hole 4.

Specifically, a limiting plate 5-4 is arranged on the second end, and a reinforcing rib is fixedly connected between the limiting plate 5-4 and the side wall of the positioning pile 1; a group of through holes 5-5 are uniformly formed in the circumference of the limiting plate 5-4; a threaded hole 4-1 matched with the through hole 5-5 is formed in the positioning pile 1 around the opening of the positioning hole 4; the connecting platform 5 is connected with the positioning pile 1 through a through hole 5-5 bolt on the limiting plate 5-4.

Furthermore, the combination of the pressing plate 5-2 and the limiting plate 5-4 clamps the protective net, so that the protective net is fixed on the positioning pile, the relative stability of the protective net and the surface of the upward slope is further kept, and a good slope protection effect is achieved.

In addition, the protection mechanism also comprises a connecting column 6 and a partition net 7; the connecting column 6 is sleeved on the columnar structure 5-1 and is fixed through a bolt; the connecting column 6 is provided with a rope clamp 6-1, and the rope clamp 6-1 fixes the partition net 7 on the side wall of the connecting column 6.

In this embodiment, the protective net and the partition net 7 are preferably both steel wire mesh structures.

Specifically, one end of the screw rod 2 close to the opening of the positioning hole 4 is a clamping part; the preferred clamping position of the present embodiment is a lock nut structure 2-3.

Specifically, an anti-skid structure is arranged on the surface of one side of the inner support rod 3; the preferred anti-slip structure of this embodiment is the parallel steps 3-1.

Preferably, the positioning pile 1 is provided with three sliding chutes 1-1 which are circumferentially arranged around the side surface of the positioning pile 1, and the sliding chutes 1-1 are provided with inclined plane convex blocks 1-2.

Preferably, the positioning structure comprises three inner supporting rods 3 and is respectively positioned in three sliding chutes 1-1; the inner supporting rod 3 is provided with an inclined surface, and the inclined surface on the inner supporting rod 3 is attached to the contact surface of the inclined surface convex block 1-2.

The working flow of the tunnel slope ascending protection is carried out in the embodiment:

firstly, inserting a positioning pile 1 into the surface of an upward slope, inserting a bolt tightening device into a positioning hole 4 to clamp the lock nut structure 2-3, rotating the screw rod 2, moving the rotating screw rod 2 in the positioning hole 4 and driving the rotating block 2-2 to move, wherein when the rotating block 2-2 moves downwards, the inclined surface at the bottom end of the inner supporting rod 3 is attached to the contact surface of the inclined surface convex block 1-2, so that the bottom end of the inner supporting rod 3 is unfolded, and the positioning pile 1 is fixedly inserted into the upward slope.

Then, the corners of the protective net are sleeved on the columnar structures 5-1, meanwhile, the pressing plates 5-2 are connected to the columnar structures 5-1 in a threaded mode, the corners of the protective net are pressed tightly, and the protective net covers the surface of an uphill slope.

Finally, the connecting column 6 is sleeved on the columnar structure 5-1 and is fixedly inserted by using a bolt; meanwhile, the edge of one end of the separation net 7 is clamped on the rope clamp 6-1, so that the separation net 7 is vertically arranged on the surface of the protective net.

In the embodiment, the positioning pile 1 is fixed on the upward slope by arranging the support rod 3 in the positioning pile 1, and then the protective net is clamped on the positioning pile 1 to fix the protective net; stable protection network can be better play the safeguard effect to the tunnel slope from the beginning. In addition, the present embodiment further comprises a partition net 7, wherein the partition net 7 is connected through a connecting column 6, and the connecting column 6 is arranged on the connecting table 5; the blocking net 7 can intercept falling rocks, and the protection effect of the embodiment is improved. The preferred protection net and the partition net 7 of this embodiment are made of steel wire mesh, so that the steel material is more firm and durable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A protection mechanism for a tunnel uphill slope is characterized by comprising a positioning structure and a protective net, wherein the protective net is fixed on the uphill slope through the positioning structure; the positioning structure comprises a positioning pile (1), a screw rod (2) and an inner support rod (3); one end of the positioning pile (1) is provided with a positioning hole (4) with internal threads, and the other end of the positioning pile is of a pointed structure; the screw rod (2) is in threaded connection with the positioning hole (4), a groove (2-1) is formed in the thread section of the screw rod (2), and a rotatable rotating block (2-2) is arranged on the surface of the groove (2-1); the inner supporting rod (3) is rotatably connected to the rotating block (2-2); and a sliding groove (1-1) for the inner supporting rod (3) to slide out of the positioning pile is formed in the side wall of the positioning pile (1).

2. Guard mechanism according to claim 1, characterized in that the positioning structure further comprises a connection station (5), the connection station (5) comprising a first end and a second end; the first end is a threaded columnar structure (5-1), and the second end is detachably connected with the opening end of the positioning pile (1); the columnar structure (5-1) is in threaded connection with a pressing plate (5-2) for fixing the protective net.

3. Guard mechanism according to claim 2, characterized in that the second end is provided with an insert rod (5-3), which insert rod (5-3) is inserted in the positioning hole (4).

4. The protection mechanism according to claim 2, wherein a limiting plate (5-4) is arranged on the second end, and a reinforcing rib is fixedly connected between the limiting plate (5-4) and the side wall of the positioning pile (1); a group of through holes (5-5) are uniformly formed in the circumference of the limiting plate (5-4); a threaded hole (4-1) matched with the through hole (5-5) is formed in the positioning pile (1) around the opening of the positioning hole (4); the connecting platform (5) is connected with the positioning pile (1) through a through hole (5-5) in the limiting plate (5-4) through a bolt.

5. Guard mechanism according to claim 2, characterized by further comprising a connecting column (6) and a partition net (7); the connecting column (6) is sleeved on the columnar structure (5-1) and is fixed through a bolt; the connecting column (6) is provided with a rope clamp (6-1), and the rope clamp (6-1) fixes the partition net (7) on the side wall of the connecting column (6).

6. Protection mechanism according to claim 5, characterized in that both the protective and spacer nets (7) are steel wire meshes.

7. The protection mechanism according to claim 1, wherein one end of the screw (2) close to the opening of the positioning hole (4) is a clamping part; the clamping part is a lock nut structure (2-3).

8. Guard mechanism according to claim 1, characterized in that one side surface of the inner strut (3) is provided with a slip-proof structure; the anti-skid structure is a step (3-1) arranged in parallel.

9. The protection mechanism according to claim 1, characterized in that the spud (1) is provided with at least two runners (1-1) arranged circumferentially around the side of the spud (1), and the runners (1-1) are provided with beveled protrusions (1-2).

10. Guard mechanism according to claim 9, characterized in that the positioning structure comprises at least two inner stays (3) matching the runners and located in different runners (1-1), respectively; the inner supporting rod (3) is provided with an inclined surface, and the inclined surface on the inner supporting rod (3) is attached to the contact surface of the inclined surface convex block (1-2).