CN217107032U

CN217107032U - Template for secondary lining construction of small-section underground excavated tunnel

Info

Publication number: CN217107032U
Application number: CN202121968396.0U
Authority: CN
Inventors: 沈文丰; 朱文明; 马廷军; 邹灿; 高小乐
Original assignee: Sinohydro Bureau 12 Co Ltd
Current assignee: Sinohydro Bureau 12 Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-08-02
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a template for the construction of a small-section subsurface tunnel secondary lining, which comprises a mounting plate, wherein a plurality of groups of telescopic supporting mechanisms are symmetrically arranged on the lower surface of the mounting plate, the lower surface of the mounting plate is rotationally connected with the supporting mechanisms through a rotating shaft, a stabilizing column is also arranged between the supporting mechanisms and the mounting plate, and an elongated slot for accommodating one end of the stabilizing column to move is arranged on the lower surface of the mounting plate; the upper surface of the mounting plate is connected with a plurality of groups of arches through the connecting block group. The utility model discloses can fold respectively as main bearing structure's supporting mechanism and bow member and accomodate to the lower surface and the upper surface of mounting panel, when convenient folding accomodating, the workman's of being convenient for transportation.

Description

Template for secondary lining construction of small-section underground excavated tunnel

Technical Field

The utility model relates to a tunnel construction technical field specifically is a template that is used for two linings of small section undercut tunnel to be under construction.

Background

In the process of the construction of the secondary lining of the tunnel, workers need to use a supporting structure to support the tunnel, and the traditional method is to temporarily build a full-space supporting frame to support the tunnel.

However, full hall support frame uses the steel pipe concatenation to form, even the full hall support frame size to the low profile construction is less, still need demolish it after completing and take away, its unable shrink, reduce occupation space's shortcoming leads to the unable convenient carrying of workman, so the process of assembling with dismantling full hall support frame will increase a large amount of operating time and manpower, in order to solve the inconvenient shortcoming of accomodating of traditional full hall support frame, we propose a template that is used for low profile to secretly dig tunnel secondary lining construction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a template that is used for two linings of small section undercut tunnel to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a template for secondary lining construction of a small-section underground excavated tunnel comprises a mounting plate, wherein a plurality of groups of telescopic supporting mechanisms are symmetrically arranged on the lower surface of the mounting plate, the lower surface of the mounting plate is rotatably connected with the supporting mechanisms through rotating shafts, a stabilizing column is further arranged between the supporting mechanisms and the mounting plate, and a long groove for accommodating one end of the stabilizing column to move is formed in the lower surface of the mounting plate; the upper surface of the mounting plate is connected with a plurality of groups of arches through the connecting block group.

Preferably, a sliding block is arranged in the long groove, and two ends of the stabilizing column are connected to the supporting mechanism and the sliding block through hinges; the upper surface of the mounting plate is provided with a plurality of limiting holes communicated with the long grooves, the sliding block is provided with connecting bolts, and the connecting bolts are in threaded connection with the sliding block through the limiting holes.

Preferably, the supporting mechanism comprises a telescopic sleeve and a supporting column, a plurality of identical round holes are formed in the telescopic sleeve, a compressible structure is arranged on the supporting column, and the supporting column can move up and down in the telescopic sleeve and is connected to any round hole in a clamping mode through the compressible structure.

Preferably, the compressible structure comprises a telescopic groove and a telescopic column which are positioned on the support column, and the inner wall of the telescopic groove is connected with the telescopic column through a spring; when pressing flexible post, oppression spring, flexible post gets into flexible inslot, and when flexible post was located round hole department, the spring bounce-back will stretch out and draw back outside the post wears out the round hole.

Preferably, the bottom end of the supporting column is fixedly provided with a universal wheel.

Preferably, both ends of the arch center are provided with connecting block groups, each connecting block group comprises a main connecting block and an auxiliary connecting block, two non-through rotating grooves are formed in both sides of the bottom end of the arch center, and the main connecting blocks and the auxiliary connecting blocks are rotatably connected with the arch center through the rotating grooves.

Preferably, a threaded column is arranged in the main connecting block, a cross-shaped limiting block is arranged at one end, close to the rotating groove, of the threaded column, and limiting grooves matched with the cross-shaped limiting blocks in shape are formed in the main connecting block and the inner wall of the rotating groove, close to the main connecting block.

Preferably, the arch center is fixedly connected with a V-shaped column, the mounting plate is fixedly connected with a rotating ring, and the bottom of the V-shaped column is rotatably connected with the inner annular wall of the rotating ring.

Preferably, the side edge of the rotating shaft is also provided with a transverse block, and the surface of the transverse block is in lap joint with the side edge of the supporting mechanism.

Advantageous effects

The utility model provides a template that is used for two linings of small section undercut tunnel to be under construction possesses following beneficial effect:

1. this a template for construction of two linings in small cross section undercut tunnel, link up the piece through setting up telescope tube and owner, the support column that will contact with ground receives telescope tube's inner wall, and then accomodate telescope tube, move cross restriction piece to main linking piece in from the bow member, can fold each other with the bow member on the mounting bracket and accomodate, thereby will regard as main bearing structure's support column and bow member to fold respectively and accomodate to the lower surface and the upper surface of mounting panel, when convenient folding accomodating, the workman's of being convenient for transportation.

2. This a template for construction of two linings in small cross section undercut tunnel through setting up stable post and V type post, can make telescopic sleeve and bow member keep perpendicular respectively, is favorable to the support to the tunnel. Through setting up compressible structure, people can be selective insert certain round hole with flexible post to the extension length of adjustment support column, and then the height of adjustment whole device.

Drawings

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

FIG. 2 is a schematic perspective view of a stabilization post;

FIG. 3 is a perspective view of a threaded post;

FIG. 4 is a schematic side view of the present invention;

FIG. 5 is a schematic front sectional view of the mounting plate;

FIG. 6 is a schematic view of a front cross-sectional structure of a connecting block set;

fig. 7 is a schematic front sectional view of a compressible structure of a support column.

In the figure: 1. the device comprises a mounting plate, 2, a telescopic sleeve, 21, a circular hole, 3, a support column, 31, a telescopic groove, 32, a telescopic column, 33, a spring, 4, a connecting block group, 41, a main connecting block, 42, an auxiliary connecting block, 5, an arch, 6, a threaded column, 7, a cross-shaped limiting block, 8, a rotating groove, 9, a stabilizing column, 10, a sliding block, 11, a rotating ring, 12 and a V-shaped column, 13, a fixing column, 14, a universal wheel, 15, a long groove, 16, a limiting hole, 17, a connecting bolt, 18, a limiting groove, 19 and a transverse block.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a template for two lining constructions in small cross section undercut tunnel, includes mounting panel 1, and mounting panel 1's lower surface symmetry is provided with multiunit telescopic supporting mechanism, and supporting mechanism and 1 rotatable coupling of mounting panel, supporting mechanism can fold in mounting panel 1 below. The upper surface of the mounting plate 1 is connected with a plurality of groups of arches 5 through the connecting block group 4, and when the tunnel is used, the arches 5 are fixed on the mounting plate 1 and used for supporting a tunnel; after use, the arch can be folded and placed on the upper surface of the mounting plate 1.

The lower surface of the mounting plate 1 is connected with a supporting mechanism through a rotating shaft, and the supporting mechanism can rotate around the rotating shaft. The side of the rotating shaft is also provided with a transverse block 19, and the surface of the transverse block 19 is overlapped with the side of the supporting mechanism, so that the supporting mechanism and the mounting plate 1 are kept in a vertical state.

A stabilizing column 9 is further arranged between the supporting mechanism and the mounting plate 1, and the stabilizing column 9 is used for fixedly connecting the mounting plate 1 and the supporting mechanism, so that the mounting plate 1 is kept stable. The lower surface of the mounting plate 1 is provided with a long groove 15 for accommodating one end of the stabilizing column 9 to move, and when the supporting mechanism is folded, the stabilizing column 9 also moves in the long groove. The sliding block 10 is arranged in the long groove 15, and two ends of the stabilizing column 9 are connected to the supporting mechanism and the sliding block 10 through hinges. The upper surface of the mounting plate 1 is provided with a limiting hole 16 communicated with the sliding block 10, the limiting hole 16 is provided with a connecting bolt 17, the sliding block 10 is provided with a threaded hole, and the connecting bolt 17 is in threaded connection with the sliding block 10 through the limiting hole 16. In a preferred embodiment, at least two limiting holes 16 are provided, and are respectively located at two ends of the long slot 15. A restraining aperture 16 secures the stabilizing post within slot 15.

In another embodiment, the stabilizing post 9 between the support mechanism and the mounting plate 1 is bolted, and when folded for storage, the stabilizing post 9 can be removed by removing the bolts on the stabilizing post, thereby folding the support mechanism ninety degrees below the mounting plate 1. When the installation is needed, the stabilizing columns are connected through bolts. The folding angle of this embodiment is bigger, and collapsible space is bigger, more convenient transport.

In a preferred embodiment, the supporting mechanism comprises a telescopic sleeve 2 and a supporting column 3, wherein the supporting column 3 is positioned in the telescopic sleeve 2 and can move up and down in the telescopic sleeve 2. Be equipped with a plurality of the same round holes 21 on the telescope tube 2, be equipped with compressible structure on the support column 3, support column 3 can be through the arbitrary round hole 21 of compressible structure joint on the telescope tube to fix support column 3 in telescope tube 2.

In one embodiment, the compressible structure comprises a telescopic slot 31 and a telescopic column 32 which are arranged in the support column 3, the inner wall of the telescopic slot 31 is connected with the telescopic column 32 through a spring 33, and the size of the telescopic column 32 is the same as that of the round hole 21, so that the telescopic column 32 can pass through the round hole 21 and be fixed on the round hole 21. The telescopic column 32 is pressed inwards, the telescopic column 32 compresses the spring 33 to move towards the telescopic groove 31, and the support column 3 can move in the telescopic sleeve 2; when the telescopic column 32 is located at a certain round hole, the telescopic column 32 rebounds outwards under the reaction force of the spring 33, and the telescopic column 32 penetrates through the round hole 21 and is fixed at the round hole 21, so that the support column 3 is fixed in the telescopic sleeve 2. Through setting up flexible post 32, people can be selective insert any round hole with flexible post 32 to the height of adjustment support column 3, and then the height of adjustment whole device.

In a specific embodiment, eight groups of supporting mechanisms are symmetrically arranged on the lower surface of the mounting plate 1, four groups of connecting blocks are fixedly mounted on the upper surface of the mounting plate, and four arches are respectively connected between the connecting block groups. On the direction of perpendicular to mounting panel, be provided with fixed column 13 between preceding two sets of and the back two sets of telescope tube 2, fixed column 13 has increased the stability between the supporting mechanism.

The bottom fixed mounting of support column 3 has universal wheel 14, and universal wheel 14 area brake makes things convenient for support column 3 to remove and fix.

The arch center 5 is a semi-circular ring type support and is used for supporting a tunnel, and two ends of the bottom of the arch center 5 are fixedly connected to the upper surface of the mounting plate 1 through a connecting block group 4. The connection block group 4 comprises a main connection block 41 and an auxiliary connection block 42, and the main connection block 41 and the auxiliary connection block 42 are respectively positioned at two sides of the bottom end of the arch frame. The main connecting block 4 is internally threaded with a threaded column 6, and one end of the threaded column 6 close to the arch frame 5 is provided with a cross-shaped limiting block 7. Two non-through rotating grooves 8 are arranged on two sides of the bottom end of the arch frame 5, and the main connecting block 41 and the auxiliary connecting block 42 are rotatably connected with the arch frame 5 through the rotating grooves 8. The main joining block 4 extends to one end of the rotating groove 8 and the inner wall of the rotating groove close to the main joining block 4 is provided with a limiting groove 18 matched with the cross-shaped limiting block in shape. The threaded column 6 is rotated inwards to enable the cross-shaped limiting block 7 to enter the limiting groove 18 in the arch frame 5, at the moment, the arch frame 5 is fixed between the main connecting block 41 and the auxiliary connecting block 42, and the arch frame 5 cannot rotate. The threaded stud 6 is rotated outwards to retract the cross-shaped limiting block into the limiting groove in the main engagement block 41, at which time the arch 5 can rotate around the rotation groove 8. Through setting up threaded column and cross restriction piece can make things convenient for the installation and the dismantlement of bow member, save space and time, the transport of being convenient for.

In the preferred embodiment, the arch 5 is further provided with V-shaped posts 12 for supporting the fixed arch 5. The mounting panel is fixedly connected with a rotating ring 11, the upper end of a V-shaped column 12 is fixed on the inner annular wall of the arch center 5, and the bottom end of the V-shaped column 12 is rotatably connected with the rotating ring 11. The arrangement of the V-shaped columns 12 and the rotating ring 11 enables the arch frame 5 to be vertically fixed on the mounting plate 1, and is beneficial to supporting a tunnel.

The working principle is as follows: when the device is used for supporting a tunnel, the arch frame 5 is in contact stress with the inner ring surface of the tunnel, and the supporting column 3 supports the arch frame 5. After completion, at first with support column 3 in retractable sleeve 2 through compressible structure, then rotate connecting bolt and separate connecting bolt and sliding block 10, can fold the below of accomodating to mounting panel 1 with retractable sleeve 2. Rotate screw post 6 immediately, move cross restriction piece 7 from the restriction inslot of bow member 5 in to main linking piece 4, can fold bow member 5 and accomodate the upper surface to mounting panel 1, finally will fold respectively as main bearing structure's support column 3 and bow member 5 and accomodate lower surface and upper surface to mounting panel 1, when convenient folding the accomodating, the workman's of being convenient for transportation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The template for the construction of the secondary lining of the small-section underground excavated tunnel is characterized by comprising an installation plate, wherein a plurality of groups of telescopic supporting mechanisms are symmetrically arranged on the lower surface of the installation plate, and the lower surface of the installation plate is rotationally connected with the supporting mechanisms through a rotating shaft; a stabilizing column is arranged between the supporting mechanism and the mounting plate, and a long groove for accommodating one end of the stabilizing column to move is formed in the lower surface of the mounting plate; the upper surface of the mounting plate is connected with a plurality of groups of arches through the connecting block group.

2. The template for the construction of the secondary lining of the low-profile underground excavated tunnel according to claim 1, wherein a sliding block is arranged in the elongated slot, and two ends of the stabilizing column are connected to the supporting mechanism and the sliding block through hinges; the upper surface of the mounting plate is provided with a plurality of limiting holes communicated with the long grooves, the limiting holes are provided with connecting bolts, and the connecting bolts are in threaded connection with the sliding blocks through the limiting holes.

3. The template for the construction of the secondary lining of the low-profile underground excavated tunnel according to claim 1, wherein the supporting mechanism comprises a telescopic sleeve and a supporting column, the telescopic sleeve is provided with a plurality of identical round holes, the supporting column is provided with a compressible structure, and the supporting column can move up and down in the telescopic sleeve and is clamped on any round hole through the compressible structure.

4. The template for the secondary lining construction of the low-profile underground excavated tunnel according to claim 3, wherein the compressible structure comprises a telescopic groove and a telescopic column which are arranged on the supporting column, and the inner wall of the telescopic groove is connected with the telescopic column through a spring; when the telescopic column is pressed, the spring is pressed, the telescopic column enters the telescopic groove, and when the telescopic column is located at the round hole, the spring rebounds to enable the telescopic column to penetrate out of the round hole.

5. The template for the construction of the secondary lining of the low-profile underground excavated tunnel according to claim 4, wherein universal wheels are fixedly installed at the bottom ends of the supporting columns.

6. The formwork of claim 1, wherein the two ends of the arch frame are provided with two connecting blocks, each connecting block comprises a main connecting block and an auxiliary connecting block, two non-through rotating grooves are formed on two sides of the bottom end of the arch frame, and the main connecting block and the auxiliary connecting block are rotatably connected with the arch frame through the rotating grooves.

7. The template for the construction of the secondary lining of the small-section subsurface tunnel according to claim 6, wherein a threaded column is arranged in the main connecting block, a cross-shaped limiting block is arranged at one end of the threaded column close to the arch, and limiting grooves matched with the cross-shaped limiting blocks in shape are formed in the main connecting block and the inner wall of the rotating groove close to the main connecting block.

8. The template for the construction of the secondary lining of the low-profile underground excavated tunnel according to claim 6, wherein the arch center is fixedly connected with a V-shaped column, the mounting plate is fixedly connected with a rotating ring, and the bottom of the V-shaped column is rotatably connected with the inner annular wall of the rotating ring.

9. The template for the construction of the secondary lining of the low-profile underground excavated tunnel according to claim 1, wherein the lateral sides of the rotating shaft are further provided with cross blocks, and the surfaces of the cross blocks are overlapped with the lateral sides of the supporting mechanism.