CN214145533U - Tunnel construction bearing structure - Google Patents

Abstract

The application discloses tunnel construction bearing structure relates to tunnel construction auxiliary assembly's technical field. The lifting device is arranged between the base and the connecting plate and drives the connecting plate to reciprocate along the vertical direction; a plurality of sliding tracks are arranged on the connecting plate at intervals in parallel, and a plurality of sliding components which reciprocate along the direction of the sliding tracks are arranged in the sliding tracks; a limiting mechanism for limiting the relative movement of the sliding component and the sliding track is arranged between the sliding component and the sliding track; fixedly connected with jack on the subassembly that slides, the jack output is provided with the backup pad, and the tunnel inside wall is hugged closely to the backup pad. This application has realized carrying out the quick support to the great position department of tunnel inside wall slump trend and has consolidated, has improved the efficiency of construction.

Description

Tunnel construction bearing structure

Technical Field

The application relates to the technical field of tunnel construction auxiliary assembly, in particular to a tunnel construction supporting structure.

Background

Tunnels are engineering structures buried in the ground, and are a form of human use of underground space. In recent years, with the continuous development of the traffic construction business of China, tunnels are more and more constructed. In order to prevent the tunnel from collapsing when the tunnel is constructed, a large number of supporting structures are arranged in the tunnel.

Chinese utility model patent with publication number CN204663549U discloses a support structure for tunnel construction. Including supporting upright roof beam, supporting platform, bracing piece, support commentaries on classics piece and backup pad, supporting platform is located and supports upright roof beam top, and the bracing piece has many and locates side by side on the supporting platform, and the top of bracing piece is equipped with the spherical recess, supports commentaries on classics piece one end be equipped with the spherical recess assorted bulb on bracing piece top, the other end is the curved surface, and this curved surface is connected with arched backup pad.

The above prior art solutions have the following drawbacks: bracing piece evenly distributed is on supporting platform, and bracing piece and supporting platform's position relatively fixed, bracing piece and tunnel inside wall even contact, but when the slump trend of certain position department of tunnel inside wall compares the slump trend of other positions department great, needs constructor to increase the position that the trend of collapsing is great to the tunnel inside wall and consolidates simply bracing piece temporarily, and the reinforcement process need consume the longer time, reduces the efficiency of construction.

SUMMERY OF THE UTILITY MODEL

In order to carry out the rapid reinforcement to the great position department of tunnel inside wall slump trend, this application provides a tunnel construction bearing structure.

The application provides a pair of tunnel construction bearing structure adopts following technical scheme:

the lifting device is arranged between the base and the connecting plate and drives the connecting plate to reciprocate along the vertical direction;

a plurality of sliding tracks are arranged on the connecting plate at intervals in parallel, and a plurality of sliding components which reciprocate along the direction of the sliding tracks are arranged in the sliding tracks; a limiting mechanism for limiting the relative movement of the sliding component and the sliding track is arranged between the sliding component and the sliding track;

fixedly connected with jack on the subassembly that slides, the jack output is provided with the backup pad, the tunnel inside wall is hugged closely to the backup pad.

Through adopting above-mentioned technical scheme, elevating gear adjusting connection board place level makes backup pad and tunnel inside wall in close contact with, when the slump trend of tunnel inside wall certain position department compares the slump trend of other positions departments great, moves the subassembly that slides along the track direction that slides, makes the bracing piece concentrate to the great position department of tunnel inside wall slump trend to realized supporting fast the reinforcement to the great position department of tunnel inside wall slump trend, improved the efficiency of construction.

Preferably, the sliding assembly comprises a sliding block which is matched with the sliding track, a connecting block is fixedly connected to the sliding block, and the connecting block is fixedly connected with the jack;

the limiting mechanism comprises a limiting hole formed in the sliding block, and a limiting pin penetrates through the limiting hole;

the limiting mechanism comprises a plurality of groups of clamping components which correspond to the sliding rails one by one, each group of clamping components comprises a plurality of clamping holes, the clamping holes are formed in the connecting plate, and the clamping holes are uniformly distributed along the direction of the sliding rails;

the limiting pin is inserted into the clamping and fixing hole at the corresponding position so as to limit the relative movement of the sliding component and the sliding track.

Through adopting above-mentioned technical scheme, the subassembly that slides moves along the track direction of sliding, thereby the spacer pin passes spacing hole of seting up on the sliding block, sets up the solid hole of blocking of connecting plate simultaneously and restricts the relative movement of subassembly and the track that slides, simple structure, the constructor operation of being convenient for.

Preferably, one end of the sliding rail penetrates through the connecting plate.

Through adopting above-mentioned technical scheme, be convenient for to the subassembly that slides that increases in the track that slides to increase the quantity of backup pad, and then increase the area of contact of bearing structure and tunnel inner wall.

Preferably, the open end of the connecting plate is hinged with a blocking flip cover, and the blocking flip cover is used for limiting the sliding component to move along the open end of the connecting plate.

Through adopting above-mentioned technical scheme, block flip restriction slip subassembly and remove along the connecting plate open end, reduce the condition of slip subassembly along the connecting plate open end roll-off connecting plate.

Preferably, the connecting block is fixedly connected with positioning mechanisms at two ends in the track direction of the corresponding sliding track, and the positioning mechanisms are used for determining the distance between two adjacent sliding assemblies in the same sliding track.

By adopting the technical scheme, the distance between the two adjacent supporting assemblies can be conveniently and quickly determined and adjusted by the constructor, and the construction efficiency is improved.

Preferably, the positioning mechanism comprises a positioning rod, and the positioning rod comprises an outer sleeve fixedly connected with the connecting block;

the positioning rod further comprises an inner sliding rod penetrating through the outer sleeve, scales are carved on the outer side wall of the inner sliding rod, and the inner sliding rod moves in a reciprocating mode along the axis direction of the outer sleeve;

the positioning mechanism further comprises a locking assembly for limiting the relative movement of the outer sleeve and the inner slide bar.

Through adopting above-mentioned technical scheme, when needing to adjust the distance between adjacent supporting component, according to the interior slide bar of scale indication sliding along outer tube axis direction, slide bar and outer tube in through locking Assembly locking when interior slide bar slides appointed scale, the constructor of being convenient for fast speed adjusting distance between adjacent supporting component improves the efficiency of construction.

Preferably, the supporting plate is hinged to the jack, and the axis direction of a hinge shaft of the supporting plate is arranged along the track direction of the sliding track.

Through adopting above-mentioned technical scheme, the backup pad of being convenient for is laminated with the tunnel inner wall of different radians, increases tunnel construction bearing structure's application scope.

Preferably, the support plate is an arc-shaped plate.

Through adopting above-mentioned technical scheme, the backup pad sets up to the arc, increases the laminating area of backup pad and tunnel inside wall.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the lifting device adjusts the horizontal height of the connecting plate to enable the supporting plate to be in close contact with the inner side wall of the tunnel, when the collapse tendency of the inner side wall of the tunnel at a certain position is larger than that of other positions, the sliding assembly is moved along the track direction of the sliding track, and the supporting rods are concentrated at the positions with larger collapse tendency towards the inner side wall of the tunnel, so that the positions with larger collapse tendency of the inner side wall of the tunnel are quickly supported and reinforced, and the construction efficiency is improved;

2. the sliding assembly is conveniently added into the sliding track, so that the number of the supporting plates is increased, and the contact area between the supporting structure and the inner wall of the tunnel is increased;

3. be convenient for constructor confirm fast and adjust the distance between two adjacent supporting components, improve the efficiency of construction.

Drawings

Fig. 1 is an overall structure schematic diagram of a tunnel construction supporting structure disclosed in an embodiment of the present application.

Fig. 2 is a schematic cross-sectional structure view showing a connection relationship between a sliding rail and a sliding assembly in a tunnel construction supporting structure disclosed in an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 4 is a schematic partial cross-sectional view illustrating a positioning mechanism in a tunnel construction supporting structure according to an embodiment of the present disclosure.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 4.

Description of reference numerals: 1. a base; 11. a universal wheel; 2. a lifting device; 21. a hydraulic cylinder; 3. a connecting plate; 31. a sliding track; 32. blocking the flip cover; 33. a hasp; 34. a slipping component; 341. a sliding block; 342. connecting blocks; 4. a limiting mechanism; 41. a limiting hole; 42. a spacing pin; 43. a clamping component; 431. a clamping hole; 5. a support device; 51. a jack; 52. a support plate; 6. a positioning mechanism; 61. positioning a rod; 611. an outer sleeve; 612. an inner slide bar; 62. a locking assembly; 621. a threaded hole; 622. clamping and fixing the pipe; 623. a clamping ring; 624. clamping the sphere; 625. a compression spring; 626. and limiting through holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses tunnel construction bearing structure.

Examples

Referring to fig. 1, including base 1, base 1 is a rectangular plate, and terminal surface is along a plurality of universal wheels 11 of the equal fixedly connected with in its width direction's both ends under base 1, lies in base 1 width direction with a plurality of universal wheels 11 of one side along the even interval setting of base 1 length direction.

Base 1 up end fixedly connected with elevating gear 2, elevating gear 2 are pneumatic cylinder 21, and pneumatic cylinder 21 is fixed in 1 up end of base, and pneumatic cylinder 21 deviates from base 1's one end fixedly connected with connecting plate 3, and connecting plate 3 is a rectangular plate, and connecting plate 3 and base 1 parallel arrangement, 3 length direction of connecting plate set up along 1 length direction of base.

Referring to fig. 1 and 2, the connecting plate 3 is provided with a plurality of sliding rails 31 spaced apart in the width direction thereof, and preferably, three sliding rails 31 are provided in the present embodiment. The track direction of track 31 that slides sets up along connecting plate 3 length direction, and the cross section of track 31 that slides is the convex, and the one end of track 31 that slides runs through connecting plate 3, and 3 open ends of connecting plate articulate has and blocks flip 32, blocks the articulated shaft axis direction of flip 32 and connecting plate 3 and sets up along 3 width direction of connecting plate, blocks that flip 32 and the articulated shaft of connecting plate 3 are located terminal surface under the connecting plate 3. A buckle 33 is fixedly connected between one end of the blocking flip 32 departing from the hinge shaft and the connecting plate 3.

A plurality of sliding assemblies 34 are arranged in the sliding tracks 31, and the sliding assemblies 34 move back and forth along the sliding tracks 31. The sliding assembly 34 includes a sliding block 341 slidably connected to the sliding rail 31, the cross section of the sliding block 341 is i-shaped, and the sliding block 341 is engaged in the sliding rail 31 and reciprocates along the rail direction of the sliding rail 31. A limiting mechanism 4 is arranged between the sliding track 31 and the sliding block 341, and the limiting mechanism 4 is used for limiting the relative movement of the sliding block 341 and the sliding track 31.

The limiting mechanism 4 comprises a limiting hole 41 formed in one end, deviating from the sliding track 31, of the sliding block, and internal threads are arranged in the limiting hole 41. A limiting pin 42 is connected to the limiting hole 41 in a threaded manner, the limiting pin 42 is a bolt, an external thread is arranged at one end of the rod part of the limiting pin 42 facing the head part of the limiting pin 42, and a polished rod is arranged at one end of the rod part of the limiting pin 42 departing from the head part of the limiting pin 42; the limiting mechanism 4 comprises three groups of clamping components 43 arranged at intervals in the width direction of the connecting plate 3, the three groups of clamping components 43 are arranged in one-to-one correspondence with the three sliding tracks 31, each group of clamping components 43 comprises a plurality of clamping holes 431 arranged at intervals in the length direction of the connecting plate 3, the clamping holes 431 are arranged on the surface of the connecting plate 3, and the polished rod parts of the limiting pins 42 are detached into the clamping holes 431 in the corresponding positions, so that the sliding blocks 341 are limited to move in the track direction of the sliding tracks 31.

Referring to fig. 1, the sliding assembly 34 further includes a connecting block 342 fixed at one end of the sliding block 341 away from the sliding rail 31, a supporting device 5 is arranged at one end of the connecting block 342 away from the sliding block 341, the supporting device 5 includes a jack 51 fixed on the connecting block 342, an output end of the jack 51 is hinged to a supporting plate 52, and an axis direction of a hinge shaft between the jack 51 and the supporting plate 52 is arranged along a length direction of the connecting plate 3. The supporting plate 52 is an arc-shaped plate, and the jack 51 drives the supporting plate 52 to move along the vertical direction and to abut against the inner side surface of the tunnel for pressing.

Referring to fig. 3 and 4, a positioning mechanism 6 is disposed on the connecting block 342, and the positioning mechanism 6 is used for determining the distance between two adjacent sliding assemblies 34 in the same sliding track 31. Positioning mechanism 6 includes that two back of the body mutually are fixed in connecting block 342 along the locating lever 61 at connecting plate 3 length direction both ends, and locating lever 61 axis direction sets up along connecting plate 3 length direction. Two adjacent positioning rods 61 on two adjacent connecting blocks 342 are in contact with each other. The positioning rod 61 comprises an outer sleeve 611, the outer sleeve 611 is a circular tube, an inner sliding rod 612 is inserted into the outer sleeve 611, scales are carved on the outer side wall of the inner sliding rod 612, and the inner sliding rod 612 reciprocates in the outer sleeve 611 along the length direction of the connecting plate 3.

Referring to fig. 4 and 5, a locking assembly 62 for limiting the relative movement between the inner slide rod 612 and the outer sleeve 611 is disposed between the outer sleeve 611 and the inner slide rod 612. The locking assembly 62 comprises a threaded hole 621 vertically penetrating through the side wall of the inner sliding rod 612, a clamping and fixing pipe 622 is connected to the threaded hole 621 in a threaded manner, clamping and fixing rings 623 are fixedly connected to two ends of the clamping and fixing pipe 622 in the axial direction, the outer diameter of each clamping and fixing ring 623 is equal to the outer diameter of the clamping and fixing pipe 622, the inner diameter of each clamping and fixing ring 623 is smaller than the inner diameter of the clamping and fixing pipe 622, and the inner diameter of each clamping and fixing ring 623 is gradually reduced along the direction of the axial line of the clamping and fixing ring 623 deviating from the clamping and fixing pipe 622. Two clamping balls 624 are placed in the clamping tube 622, the diameter of each clamping ball 624 is equal to the inner diameter of the clamping tube 622, a compression spring 625 is fixedly connected between the two clamping balls 624, the two clamping balls 624 move relatively or oppositely along the axis of the clamping tube 622 under the action of the compression spring 625, and the two clamping balls 624 can extend out of the clamping ring 623 and can be completely pressed into the clamping tube 622;

the locking assembly 62 further includes a plurality of through holes 626 vertically penetrating the sidewall of the outer sleeve 611, and the plurality of through holes 626 are uniformly spaced along the axial direction of the outer sleeve 611. The limiting through hole 626 is a conical hole, the diameter of the limiting through hole 626 is gradually reduced along the direction of the axis of the limiting through hole deviating from the inner slide rod 612, and the maximum diameter of the limiting through hole 626 is equal to the minimum diameter of the clamping ring 623; one end of each of the two locking balls 624 extending out of the locking ring 623 is respectively locked at two ends of the limiting through hole 626, so as to limit the relative movement between the inner sliding rod 612 and the outer sleeve 611.

The implementation principle of the tunnel construction supporting structure of the embodiment of the application is as follows:

the tunnel construction supporting structure is pushed into the construction tunnel through the universal wheels 11, and the positions and the number of the supporting plates 52 are determined according to the collapse degree of all positions of the inner side wall of the tunnel.

When the number of the supporting plates 52 is increased or decreased, the hasps 33 are opened, the blocking turnover plate is relatively rotated, and the blocking turnover cover 32 releases the blocking effect on the sliding track 31; the sliding component 34 fixedly connected with the supporting device 5 is added or reduced into the sliding track 31, and then the turning cover 32 is blocked and the buckle 33 is locked by relative rotation, so that the operation of increasing or reducing the number of the supporting plates 52 is completed.

When the distance between two adjacent support plates 52 in the same sliding track 31 is determined, the length of two mutually contacted positioning rods 61 between the two support plates 52 is adjusted, firstly, two clamping balls 624 on one of the positioning rods 61 are pressed relatively, so that the two clamping balls 624 are completely pressed into the clamping tube 622, and at the moment, the locking assembly 62 releases the locking effect on the inner sliding rod 612 and the outer sleeve 611; referring to the scale marks on the inner sliding rod 612, the inner sliding rod 612 is moved along the axial direction of the outer sleeve 611 until the inner sliding rod is moved to a half of the required distance, the two clamping balls 624 are aligned to two ends of the clamping through hole, and the two clamping balls 624 are respectively clamped and fixed with two ends of the clamping through hole under the action of the compression spring 625; the above operation is then repeated for the other positioning rod 61. Then, the sliding assembly 34 is pushed along the rail direction of the sliding rail 31, and the two positioning rods 61 are contacted with each other, so that the positioning of the two adjacent supporting plates 52 in the same sliding rail 31 is completed.

After the position of the support plate 52 is determined, the limit pin 42 at the position corresponding to the support plate 52 is rotated, and the limit pin 42 moves towards the connection plate 3 along the axial direction of the limit hole 41 at the corresponding position until the polished rod part of the limit pin 42 is inserted into the clamping hole 431 at the corresponding position, so that the sliding component 34 is limited to move along the track direction of the sliding track 31, and the relative displacement between the support plate 52 and the inner side wall of the tunnel is further limited.

The embodiment of the application provides a tunnel construction bearing structure has realized supporting fast and has consolidated the great position department of tunnel inside wall slump trend, has improved the efficiency of construction.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a tunnel construction bearing structure, includes base (1), its characterized in that: the lifting device comprises a connecting plate (3) arranged in parallel with the base (1), and a lifting device (2) for driving the connecting plate (3) to reciprocate along the vertical direction is arranged between the base (1) and the connecting plate (3);

a plurality of sliding rails (31) are arranged on the connecting plate (3) in parallel at intervals, and a plurality of sliding assemblies (34) which move in a reciprocating manner along the rail direction of the sliding rails (31) are arranged in the sliding rails (31); a limiting mechanism (4) for limiting the relative movement of the sliding component (34) and the sliding track (31) is arranged between the sliding component (34) and the sliding track (31);

fixedly connected with jack (51) on the subassembly that slides (34), jack (51) output is provided with backup pad (52), tunnel inside wall is hugged closely in backup pad (52).

2. The tunnel construction support structure of claim 1, wherein: the sliding assembly (34) comprises a sliding block (341) which is matched with the sliding track (31), a connecting block (342) is fixedly connected to the sliding block (341), and the connecting block (342) is fixedly connected with the jack (51);

the limiting mechanism (4) comprises a limiting hole (41) formed in the sliding block (341), and a limiting pin (42) penetrates through the limiting hole (41);

the limiting mechanism (4) comprises a plurality of groups of clamping components (43) which are in one-to-one correspondence with the sliding track (31), each group of clamping components (43) comprises a plurality of clamping holes (431), the clamping holes (431) are formed in the connecting plate (3), and the clamping holes (431) are uniformly distributed along the track direction of the sliding track (31);

the limiting pin (42) is inserted into the clamping hole (431) at the corresponding position so as to limit the relative movement of the sliding component (34) and the sliding track (31).

3. The tunnel construction support structure of claim 1, wherein: one end of the sliding track (31) penetrates through the connecting plate (3).

4. A tunnel construction support structure according to claim 3, wherein: the opening end of the connecting plate (3) is hinged with a blocking flip cover (32), and the blocking flip cover (32) is used for limiting the sliding component (34) to move along the opening end of the connecting plate (3).

5. A tunnel construction support structure according to claim 2, wherein: the connecting block (342) is along corresponding equal fixedly connected with positioning mechanism (6) in both ends of track (31) track direction that slides, positioning mechanism (6) are used for confirming and are located the same distance between two adjacent subassembly (34) that slide in the track (31) that slides.

6. The tunnel construction support structure of claim 5, wherein: the positioning mechanism (6) comprises a positioning rod (61), and the positioning rod (61) comprises an outer sleeve (611) fixedly connected with the connecting block (342);

the positioning rod (61) further comprises an inner sliding rod (612) penetrating through the outer sleeve (611), scales are carved on the outer side wall of the inner sliding rod (612), and the inner sliding rod (612) moves in a reciprocating mode along the axial direction of the outer sleeve (611);

the positioning mechanism (6) further comprises a locking assembly (62) for limiting the relative movement of the outer sleeve (611) and the inner slide bar (612).

7. The tunnel construction support structure of claim 1, wherein: the supporting plate (52) is hinged with the jack (51), and the axis direction of a hinge shaft of the supporting plate is arranged along the track direction of the sliding track (31).

8. The tunnel construction support structure of claim 1, wherein: the support plate (52) is an arc-shaped plate.

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