CN113914329A

CN113914329A - Support firm ground tunnel underground structure

Info

Publication number: CN113914329A
Application number: CN202111392716.7A
Authority: CN
Inventors: 李文剑; 罗英鹏; 付达峰; 吴俭洪; 赖传万
Original assignee: Sun Yat Sen University
Current assignee: Sun Yat Sen University
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-01-11
Anticipated expiration: 2041-11-23
Also published as: CN113914329B

Abstract

The application discloses support firm ground tunnel foundation ditch supporting construction, it includes: the bottom plate, the mounting panel, the mounting hole, the curb plate, the fixed strip, the direction locating hole, the threaded rod, first screw hole, first cylindrical gear, first pivot, the gear post, first conical gear, location compress tightly stop mechanism, the square sleeve, the round hole, consolidate the bracing piece, the rotary disk, the direction pipe fitting, first protection box, the round bar cover, the movable rod, first knob, the fender ring, direction square groove, the location jack, the bolt, the fixed plate, the second knob, the fly leaf, the tooth's socket, second conical gear, the second protection box, the second pivot, first worm wheel, first worm, the connecting axle, second cylindrical gear, the second worm wheel, the second worm, the mount, the uide bushing, the square bar, a spring, the movable block, the locating hole, side spout and square hole. The utility model provides an useful part lies in that it has the plate and the interval adjustment mechanism of vertical flexible regulation, and the vertical height-adjustable of plate, the interval of two plates is adjustable.

Description

Support firm ground tunnel underground structure

Technical Field

The invention relates to a tunnel foundation pit supporting structure, in particular to a firmly-supported rock-soil tunnel foundation pit supporting structure, and belongs to the technical field of tunnel foundation pit side wall supporting.

Background

The foundation pit support is used for ensuring the safety of underground structure construction and the surrounding environment of the foundation pit; and supporting, reinforcing and protecting measures are adopted for the side wall of the foundation pit and the surrounding environment.

The existing supporting structure has general stability; the protection on the rock-soil deep foundation pit is insufficient; the shape of the existing supporting structure is generally fixed; a support structure is suitable for deep foundation pit support of a width; the application range has certain limitation; in the existing patent document "CN 214245746U foundation pit supporting structure with tunnel on the side wall of the foundation pit", although the supporting of the side wall of the tunnel foundation pit can be performed, the supporting structure lacks the function of adjusting the width and the height direction, and is not easy to be applied to foundation pits with different heights and widths. At present, there is no firmly-supported rock-soil tunnel foundation pit supporting structure which can be used for supporting and adjusting the width and the height.

Disclosure of Invention

In order to solve the not enough of prior art, this application provides a support firm ground tunnel underground structure for be difficult for carrying out the problem that different width, high foundation ditch lateral wall supported among the solution prior art.

Furthermore, the problem that the supporting effect of the side wall of the foundation pit is not good in the prior art is solved, and the side wall is not easy to support and block.

According to an aspect of the application, a rock-soil tunnel foundation pit supporting structure for supporting stability is provided, including: the device comprises a bottom plate, a mounting plate, a fixing strip, a plate, an interval adjusting mechanism, a positioning and pressing blocking mechanism, a square sleeve and a reinforcing support rod; the mounting plate is fixedly mounted at the top of the bottom plate, a plurality of mounting holes are formed in the surface of the bottom plate along the length direction, fixing strips are fixedly mounted on two sides of the top of the bottom plate, the number of the fixing strips is two, plates capable of being adjusted in a vertically telescopic mode are arranged on one side of each of the two fixing strips, the number of the plates is two, and an interval adjusting mechanism is arranged between the two plates; two install two location between the fixed strip and compress tightly stop gear, the symmetry cover is equipped with a plurality of square covers on the location compresses tightly stop gear, square cover fixedly connected with consolidates the bracing piece, the end of consolidating the bracing piece is connected with the lateral wall of plate.

Further, including the plate includes: the movable rod is connected with the round rod sleeve in a clearance fit mode, and the movable rod is rotatably installed on the side plate.

Further, the installation is rotated with the lateral wall of first protection box to the round bar cover, and the round bar cover extends to the inside of first protection box, the round bar cover cup joints with the second worm wheel is fixed, the second worm wheel is connected with the meshing of second worm, the second worm rotates the inside of installing at first protection box, the one end and the first knob fixed connection of second worm.

Further, the spacing adjustment mechanism includes: threaded rod, first screw hole, first cylindrical gear, gear post, direction pipe fitting and direction locating hole, the one end of threaded rod is connected with one side bottom position department rotation of curb plate, first screw hole with the direction locating hole is all seted up on the strip face of fixed strip, threaded rod and first screw hole threaded connection, the fixed cover in end of threaded rod has connect first cylindrical gear, first cylindrical gear is connected with the gear post meshing, the gear post rotates and installs between two fixed strips, the one end of direction pipe fitting and one side bottom position department fixed connection of curb plate, the direction pipe fitting is connected with direction locating hole clearance fit, the direction pipe fitting is connected with round bar cover clearance fit.

Furthermore, a first conical gear is fixedly sleeved at the middle part of the gear column, the number of the first conical gears is two, the other first conical gear is fixedly sleeved with the top end of the first rotating shaft, the first rotating shaft is rotatably connected with the mounting plate, a second protective box body is arranged on one side of the first rotating shaft, the second protective box body is fixedly connected with the bottom of the mounting plate, a second rotating shaft is rotatably installed on one side of the second protective box body, a second conical gear is fixedly sleeved at one end of the second rotating shaft and the bottom end of the first rotating shaft, the two second conical gears are in meshing connection, a first worm wheel and a first worm are arranged in the second protective box body, the first worm wheel is in meshing connection with the first worm, the first worm wheel is fixedly sleeved with the second rotating shaft, the first worm is rotatably installed in the second protective box body, the one end of first worm and the one end fixed connection of connecting axle, the end and the fixed plate of connecting axle rotate to be connected, the bottom fixed connection of fixed plate and mounting panel, the tip and the second knob fixed connection of connecting axle.

Further, the round bar cover surface cover is equipped with and keeps off the ring, the bottom fixedly connected with movable block that keeps off the ring, the movable block with offer the direction square groove sliding connection on mounting panel surface, the locating hole has been seted up in the front of movable block, a plurality of equidistant distribution's location jack has been seted up in the front of mounting panel, location jack and direction square groove intercommunication, one of them location jack clearance fit is connected with the bolt, the bolt is connected with locating hole clearance fit.

Further, the positioning and pressing blocking mechanism comprises: layering, cylinder, circle axle, external screw thread and screw hole, the figure of layering is two, two the middle part of layering all sets up threaded hole, two external screw threads have been seted up on the surface of circle axle, the circle axle passes through external screw thread and screw hole threaded connection, the bottom and the mounting panel of circle axle rotate to be connected, the tip of layering and the groove sliding connection that sideslips of seting up on the fixed strip lateral wall, the face fixed mounting of layering has a plurality of equidistant cylinders that distribute, the top fixed mounting of circle axle has the rotary disk.

Furthermore, round holes are formed in the inner wall of the top of the square sleeve and the inner wall of the bottom of the square sleeve, and the round holes are in clearance fit connection with the cylinders.

Furthermore, a guide sleeve is arranged at the bottom end of the round shaft, fixing frames are fixedly connected to two sides of the guide sleeve, the tail end of each fixing frame is fixedly connected with the bottom of the mounting plate, the guide sleeve is in clearance fit connection with the square rod, a square hole is formed in the bottom end of the round shaft, the top end of the square rod is in clearance fit connection with the square hole, and a spring is sleeved on the surface of the square rod; the square rod is elastically connected with the bottom of the guide sleeve through a spring.

Furthermore, one end of the reinforcing support rod is fixedly connected with the side wall of the side plate.

The application has the advantages that: the supporting structure is provided with a plate capable of being vertically telescopically adjusted and an interval adjusting mechanism, the vertical height of the plate can be adjusted, the supporting of the side walls of the foundation pit with different heights can be met within a certain range, and the interval between the two plates can be adjusted, so that the supporting requirements of the side walls of the foundation pit with different widths can be met within a certain range; meanwhile, the whole reinforcing support is stable, the spacing adjusting mechanism is used for bearing and supporting, the positioning pressing blocking mechanism is used for positioning the square sleeve, the square sleeve and the reinforcing support rod are arranged, the plate can be supported, and the supporting effect is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

fig. 1 is a schematic structural view of a stably supported geotechnical tunnel foundation pit supporting structure according to an embodiment of the present application;

FIG. 2 is a schematic view of the connection structure of the first rotating shaft and the connecting shaft in the embodiment of FIG. 1;

FIG. 3 is a schematic structural view of the movable plate and the second worm in the embodiment shown in FIG. 1;

FIG. 4 is a schematic view of the embodiment of FIG. 1 showing the positioning of the hold-down stop mechanism and the positioning of the bottom of the hold-down stop mechanism;

FIG. 5 is a schematic structural view of a first spur gear and a gear column of the embodiment shown in FIG. 1;

FIG. 6 is a schematic structural view of the movable block and the square guide groove in the embodiment of FIG. 1;

FIG. 7 is a schematic structural view of the round shaft and the bead in the embodiment of FIG. 1;

FIG. 8 is a schematic structural view of the fixing strip and the pressing strip in the embodiment shown in FIG. 1;

FIG. 9 is a schematic diagram of the arrangement of cylinders in the embodiment of FIG. 1;

FIG. 10 is a schematic view of the embodiment of FIG. 1 showing the fitting and positioning between the circular cylinder and the circular hole;

FIG. 11 is a schematic view of the structure of the round shaft and the square hole in the embodiment of FIG. 1.

The meaning of the reference symbols in the figures: 1. a base plate; 2. mounting a plate; 3. mounting holes; 4. a side plate; 5. a fixing strip; 6. guiding the positioning hole; 7. a threaded rod; 8. a first threaded hole; 9. a first cylindrical gear; 10. a first rotating shaft; 11. a gear post; 12. a first conical gear; 13. a positioning and pressing blocking mechanism; 1301. layering; 1302. a cylinder; 1303. a circular shaft; 1304. an external thread; 1305. a threaded hole; 14. a square sleeve; 1401. a circular hole; 15. reinforcing the supporting rod; 16. rotating the disc; 17. a guide tube member; 18. a first protective box; 19. a round bar sleeve; 1901. a movable rod; 20. a first knob; 21. a baffle ring; 22. a guide square groove; 23. positioning the jack; 24. a bolt; 25. a fixing plate; 26. a second knob; 27. a movable plate; 28. a tooth socket; 29. a second conical gear; 30. a second protective box body; 31. a second rotating shaft; 32. a first worm gear; 33. a first worm; 34. a connecting shaft; 35. a second cylindrical gear; 36. a second worm gear; 37. a second worm; 38. a fixed mount; 39. a guide sleeve; 40. a square bar; 41. a spring; 42. a movable block; 43. positioning holes; 44. a side chute; 45. and (4) square holes.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 11, including: the device comprises a bottom plate 1, a mounting plate 2, a fixing strip 5, plates, an interval adjusting mechanism, a positioning and pressing blocking mechanism 13, a square sleeve 14 and a reinforcing support rod 15;

the mounting plate comprises a bottom plate 1, a mounting plate 2, a plurality of mounting holes 3, fixing strips 5, two fixing strips 5, plates capable of being adjusted in a vertically telescopic mode, and an interval adjusting mechanism, wherein the mounting plate 2 is fixedly mounted at the top of the bottom plate 1, the plurality of mounting holes 3 are formed in the surface of the bottom plate 1 along the length direction, the two fixing strips 5 are fixedly mounted on two sides of the top of the bottom plate 1, the number of the two fixing strips 5 is two, the two plates are arranged on one side of each fixing strip 5 in a telescopic mode, and the interval adjusting mechanism is arranged between the two plates; two positioning and pressing blocking mechanisms 13 are arranged between the two fixing strips 5, a plurality of square sleeves 14 are symmetrically sleeved on the positioning and pressing blocking mechanisms 13, the square sleeves 14 are fixedly connected with reinforcing support rods 15, and the tail ends of the reinforcing support rods 15 are connected with the side walls of the plates; the adjustable-height vertical plate has the advantages that the adjustable-height vertical plate can meet the requirements of foundation pit side wall supports with different heights in a certain range, and the adjustable-distance vertical plate has the advantages that the distance between the two adjustable-height vertical plates can be adjusted, so that the requirements of foundation pit side wall supports with different widths can be met in a certain range; meanwhile, the whole reinforcing support is stable, the spacing adjusting mechanism is used for bearing and supporting, the positioning pressing blocking mechanism 13 is used for positioning the square sleeve 14, the square sleeve 14 and the reinforcing support rod 15 are arranged, the plate can be supported, and the supporting effect is improved.

As shown in fig. 1 and 3, as a specific aspect, the panel includes: the side plate comprises a side plate 4, a movable plate 27, a second cylindrical gear 35, a movable rod 1901 and a round rod sleeve 19, wherein a positioning groove is vertically formed in the side plate 4, the movable plate 27 is installed in an embedded mode in the positioning groove, a tooth groove 28 is formed in the edge of the front face of the movable plate 27, the tooth groove 28 is connected with the second cylindrical gear 35 in a meshed mode, the middle of the second cylindrical gear 35 is fixedly connected with one end of the movable rod 1901, the movable rod 1901 is connected with the round rod sleeve 19 in a clearance fit mode, and the movable rod 1901 and the side plate 4 are installed in a rotating mode; the round rod sleeve 19 is rotatably installed on the side wall of the first protection box 18, the round rod sleeve 19 extends into the first protection box 18, the round rod sleeve 19 is fixedly sleeved with the second worm wheel 36, the second worm wheel 36 is engaged with the second worm 37, the second worm 37 is rotatably installed inside the first protection box 18, one end of the second worm 37 is fixedly connected with the first knob 20, the second worm 37 rotates by rotating the first knob 20, the round rod sleeve 19 and the movable rod 1901 can be driven to rotate together by the engagement transmission between the second worm 37 and the second worm wheel 36, the second cylindrical gear 35 can rotate together with the movable rod 1901, when the second cylindrical gear 35 rotates, the movable plate 27 can be driven to move up and down by the engagement transmission of the tooth sockets 28, the movable plate 27 is guided by the side plate 4, realize adjusting to can change the height of both sides holding surface, satisfy different support height demands, can carry out relative movement between movable rod 1901 and the round bar cover 19 for deal with two plate interval regulation, have flexible function promptly.

As shown in fig. 1 and 2, as a specific aspect, the distance adjustment mechanism includes: the threaded rod 7, a first threaded hole 8, a first cylindrical gear 9, gear columns 11, a guide pipe fitting 17 and a guide positioning hole 6, wherein one end of the threaded rod 7 is rotatably connected with the bottom position of one side of the side plate 4, the first threaded hole 8 and the guide positioning hole 6 are both formed in the strip surface of the fixing strip 5, the threaded rod 7 is in threaded connection with the first threaded hole 8, the first cylindrical gear 9 is fixedly sleeved at the tail end of the threaded rod 7, the first cylindrical gear 9 is in meshed connection with the gear columns 11, the gear columns 11 are rotatably installed between the two fixing strips 5, one end of the guide pipe fitting 17 is fixedly connected with the bottom position of one side of the side plate 4, the guide pipe fitting 17 is in clearance fit connection with the guide positioning hole 6, and the guide pipe fitting 17 is in clearance fit connection with the round rod sleeve 19; the fixed cover in middle part of gear post 11 has been connected a first conical gear 12, the figure of first conical gear 12 is two, another first conical gear 12 is fixed with first pivot 10 top and is cup jointed, first pivot 10 rotates with mounting panel 2 to be connected, one side of first pivot 10 is provided with second protection box 30, the bottom fixed connection of second protection box 30 and mounting panel 2, one side of second protection box 30 is rotated and is installed second pivot 31, one end of second pivot 31 and the bottom of first pivot 10 all fixedly cup jointed a second conical gear 29, two mesh connection between the second conical gear 29, the inside of second protection box 30 is provided with first worm wheel 32 and first worm 33, first worm wheel 32 and first worm 33 mesh connection, first worm wheel 32 and second pivot 31 are fixed to be cup jointed, the first worm 33 is rotatably installed inside the second protective box 30, one end of the first worm 33 is fixedly connected with one end of a connecting shaft 34, the tail end of the connecting shaft 34 is rotatably connected with the fixing plate 25, the fixing plate 25 is fixedly connected with the bottom of the mounting plate 2, the end of the connecting shaft 34 is fixedly connected with the second knob 26, the second knob 26 is rotated to drive the connecting shaft 34 and the first worm 33 to rotate together, the second rotating shaft 31 is rotated through the meshing transmission between the first worm 33 and the first worm wheel 32, the first rotating shaft 10 is rotated through the meshing transmission between the two second bevel gears 29, the gear column 11 is rotated through the meshing transmission between the gear column 11 and the two first cylindrical gears 9, the two threaded rods 7 are driven to rotate through the meshing transmission between the gear column 11 and the two first cylindrical gears 9, the screw thread turning directions of the two threaded rods 7 are opposite, the two side plates 4 can be driven to move in opposite directions through the guide of the guide pipe fittings 17 and the guide positioning holes 6, the distance between the two side plates 4 is adjustable, the side plates 4 and the tooth grooves 28 can be close to the side wall of the foundation pit and are in contact with the side wall, the reinforcing support rod 15 can be driven to move, and the circular hole 1401 is aligned with a cylinder 1302 on the pressing strip 1301.

As shown in fig. 1 and fig. 6, as a concrete scheme, the surface cover of round bar cover 19 is equipped with fender ring 21, keep off the bottom fixedly connected with movable block 42 of ring 21, movable block 42 and the direction square groove 22 sliding connection who sets up on mounting panel 2 surface, locating hole 43 has been seted up in the front of movable block 42, a plurality of equidistant distribution's location jack 23 has been seted up in the front of mounting panel 2, location jack 23 and direction square groove 22 intercommunication, one of them location jack 23 clearance fit is connected with bolt 24, bolt 24 is connected with locating hole 43 clearance fit, can advance line location and block the fender ring 21 of regulation, keeps off ring 21 and blocks for direction pipe fitting 17 provides, plays spacing effect, has improved and has supported reinforced effect.

As shown in fig. 1, 4, 7, 8, 9, and 10, as a specific solution, the positioning and pressing blocking mechanism 13 includes: the fixing device comprises pressing strips 1301, a cylinder 1302, a round shaft 1303, external threads 1304 and threaded holes 1305, wherein the number of the pressing strips 1301 is two, the middle parts of the two pressing strips 1301 are respectively provided with a threaded hole 1305, the surface of the round shaft 1303 is provided with two external threads 1304, the round shaft 1303 is in threaded connection with the threaded holes 1305 through the external threads 1304, the bottom end of the round shaft 1303 is rotatably connected with a mounting plate 2, the end part of the pressing strip 1301 is in sliding connection with a side sliding groove 44 formed in the side wall of a fixing strip 5, the plate surface of the pressing strip 1301 is fixedly provided with a plurality of cylinders 1302 distributed at equal intervals, the top end of the round shaft 1303 is fixedly provided with a rotating disc 16, the bottom end of the round shaft 1303 is provided with a guide sleeve 39, both sides of the guide sleeve 39 are fixedly connected with fixing frames 38, the tail ends of the fixing frames 38 are fixedly connected with the bottom of the mounting plate 2, and the guide sleeve 39 is in clearance fit with a square rod 40, a square hole 45 is formed in the bottom end of the round shaft 1303, the top end of the square rod 40 is in clearance fit connection with the square hole 45, and a spring 41 is sleeved on the surface of the square rod 40; the square rod 40 is elastically connected with the bottom of the guide sleeve 39 through a spring 41; through the lower pull square rod 40, the square rod 40 is separated from the square hole 45, the positioning of the round shaft 1303 is cancelled, the rotating disc 16 is rotated, the round shaft 1303 is rotated, the pressing strip 1301 can be driven to move through the action between the external threads 1304 and the threaded hole 1305, the pressing strip 1301 can be guided by the side sliding groove 44 and can move, the screwing directions of the threads between the two external threads 1304 on the round shaft 1303 are opposite, so that the two pressing strips 1301 move in opposite directions, the distance between the two pressing strips 1301 is increased, and the cylinder 1302 is inserted into the round hole 1401 for positioning; after positioning, the square rod 40 pulled downwards is loosened, and the square rod 40 can be inserted into the square hole 45 through the action of the spring 41 to be positioned again, so that the use is completed.

Round holes 1401 are formed in the inner wall of the top of the square sleeve 14 and the inner wall of the bottom of the square sleeve 14, and the round holes 1401 are connected with the cylinder 1302 in a clearance fit mode and used for limiting and blocking.

One end of the reinforcing support rod 15 is fixedly connected with the side wall of the side plate 4.

The using method comprises the following steps: when the whole structure is used, the whole structure is positioned in the middle of a foundation pit, firstly, the cylinder 1302 and the circular hole 1401 are in a separated state, the second worm 37 rotates by rotating the first knob 20, the rod sleeve 19 and the movable rod 1901 can be driven to rotate together by meshing transmission between the second worm 37 and the second worm wheel 36, the second cylindrical gear 35 can rotate together with the movable rod 1901, the movable plate 27 can be driven to move in the up-and-down direction by matching with the meshing transmission effect of the tooth grooves 28 when the second cylindrical gear 35 rotates, the movable plate 27 is guided by the side plate 4 to realize adjustment, so that the heights of the supporting surfaces on two sides can be changed, and different supporting height requirements can be met;

further, the second knob 26 is rotated to drive the connecting shaft 34 and the first worm 33 to rotate together, the second rotating shaft 31 is rotated through the meshing transmission between the first worm 33 and the first worm wheel 32, the first rotating shaft 10 is rotated through the meshing transmission between the two second bevel gears 29, the gear post 11 is rotated through the meshing transmission between the two first bevel gears 12, the two threaded rods 7 are driven to rotate through the meshing transmission between the gear post 11 and the two first cylindrical gears 9, the thread directions of the two threaded rods 7 are opposite, the two side plates 4 are driven to move in opposite directions through the guidance of the guide pipe fitting 17 and the guide positioning hole 6, the distance between the two side plates 4 is adjustable, the side plates 4 and the tooth space 28 can be close to the side wall of the foundation pit and contact with the side wall, and the reinforcing supporting rod 15 is driven to move at the same time, the round hole 1401 is aligned with one cylinder 1302 on the pressing strip 1301, the square rod 40 is separated from the square hole 45 through the lower-pull square rod 40, the positioning of the round shaft 1303 is cancelled, the rotating disc 16 is rotated, the round shaft 1303 is rotated, the pressing strip 1301 can be driven to move through the action between the external threads 1304 and the threaded hole 1305, the pressing strip 1301 can be guided by the side sliding groove 44 and can move, it needs to be explained that the thread turning directions of the two external threads 1304 on the round shaft 1303 are opposite, so that the two pressing strips 1301 move in opposite directions, the distance between the two pressing strips 1301 is increased, and the cylinder 1302 is inserted into the round hole 1401 for positioning; after positioning, the downward-pulled square rod 40 is loosened, the square rod 40 can be inserted into the square hole 45 under the action of the spring 41, and positioning is carried out again to finish use;

further sliding on the round bar sleeve 19 by pulling the baffle ring 21, wherein the movable block 42 slides in the guide square groove 22, so that the baffle ring 21 is in contact with the guide pipe fitting 17, at the moment, the positioning hole 43 is aligned with one positioning insertion hole 23, and the bolt 24 is inserted to be in clearance fit with the positioning hole 43 and the positioning insertion hole 23, so that the positioning is completed, the position of the baffle ring 21 is maintained, and the blocking can be performed; further, a rod piece or an anchor rod is installed through the installation hole 3, so that the bottom plate 1 is fixed on the ground of the foundation pit, and fixation is realized;

wherein the side plate 4 and the movable plate 27 provide the support for the side wall, wherein the distance adjusting mechanism is used for bearing and reinforcing the support of the support rod 15, and the baffle ring 21 is further arranged for blocking, so that the whole support is stable, and the using effect is better.

According to the technical scheme, the whole rock-soil tunnel foundation pit supporting structure can be used for supporting and reinforcing the side wall of a tunnel foundation pit and is provided with the plate capable of being vertically telescopically adjusted and the interval adjusting mechanism, the vertical height of the plate can be adjusted, foundation pit side wall supports with different heights can be met within a certain range, and the interval between the two plates can be adjusted, so that the distance between the two plates can be adjusted, and the requirement for supporting foundation pit side walls with different widths can be met within a certain range; meanwhile, the whole reinforcing support is stable, the spacing adjusting mechanism is used for bearing and supporting, the positioning pressing blocking mechanism 13 is used for positioning the square sleeve 14, the square sleeve 14 and the reinforcing support rod 15 are arranged, the plate can be supported, and the supporting effect is improved.

The foregoing is illustrative of the present application and is not to be construed as limiting thereof, as numerous modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a support firm ground tunnel underground structure which characterized in that:

the method comprises the following steps: the device comprises a bottom plate (1), a mounting plate (2), a fixing strip (5), a plate, a spacing adjusting mechanism, a positioning and pressing blocking mechanism (13), a square sleeve (14) and a reinforcing support rod (15);

the mounting plate comprises a bottom plate (1), a mounting plate (2) and fixing strips, wherein the mounting plate (2) is fixedly mounted at the top of the bottom plate (1), a plurality of mounting holes (3) are formed in the surface of the bottom plate (1) along the length direction, the fixing strips (5) are fixedly mounted on two sides of the top of the bottom plate (1), the number of the fixing strips (5) is two, plates capable of being vertically telescopically adjusted are arranged on one side of each of the two fixing strips (5), the number of the plates is two, and an interval adjusting mechanism is arranged between the two plates; two install two location between fixed strip (5) and compress tightly stop gear (13), the location compresses tightly stop gear (13) and goes up the symmetry cover and be equipped with a plurality of square cover (14), square cover (14) fixedly connected with consolidates bracing piece (15), the end of consolidating bracing piece (15) is connected with the lateral wall of plate.

2. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 1, characterized in that: including the plate includes: curb plate (4), fly leaf (27), second cylindrical gear (35), movable rod (1901) and round bar cover (19), the vertical constant head tank of having seted up is followed in the inside of curb plate (4), fly leaf (27) are installed to the constant head tank gomphosis, tooth's socket (28) have been seted up at the front border of fly leaf (27), tooth's socket (28) are connected with second cylindrical gear (35) meshing, the middle part of second cylindrical gear (35) and the one end fixed connection of movable rod (1901), movable rod (1901) and round bar cover (19) clearance fit are connected, movable rod (1901) and curb plate (4) rotate the installation.

3. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 2, characterized in that: the installation is rotated with the lateral wall of first protection box (18) to pole cover (19), and pole cover (19) extend to the inside of first protection box (18), pole cover (19) and second worm wheel (36) fixed cup joint, second worm wheel (36) are connected with second worm (37) meshing, second worm (37) rotate and install the inside at first protection box (18), the one end and first knob (20) fixed connection of second worm (37).

4. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 1, characterized in that: the interval adjustment mechanism includes: the threaded rod (7), a first threaded hole (8), a first cylindrical gear (9), a gear column (11), a guide pipe fitting (17) and a guide positioning hole (6), wherein one end of the threaded rod (7) is rotatably connected with the bottom position of one side of the side plate (4), the first threaded hole (8) and the guide positioning hole (6) are arranged on the surface of the fixing strip (5), the threaded rod (7) is in threaded connection with the first threaded hole (8), the tail end of the threaded rod (7) is fixedly sleeved with the first cylindrical gear (9), the first cylindrical gear (9) is in meshed connection with the gear column (11), the gear column (11) is rotatably installed between the two fixing strips (5), one end of the guide pipe fitting (17) is fixedly connected with the bottom position of one side of the side plate (4), and the guide pipe fitting (17) is in clearance fit connection with the guide positioning hole (6), the guide pipe fitting (17) is in clearance fit connection with the round rod sleeve (19).

5. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 4, characterized in that: a first conical gear (12) is fixedly sleeved at the middle part of the gear column (11), the number of the first conical gears (12) is two, another first conical gear (12) is fixedly sleeved with the top end of a first rotating shaft (10), the first rotating shaft (10) is rotatably connected with the mounting plate (2), a second protective box body (30) is arranged on one side of the first rotating shaft (10), the second protective box body (30) is fixedly connected with the bottom of the mounting plate (2), a second rotating shaft (31) is rotatably installed on one side of the second protective box body (30), a second conical gear (29) is fixedly sleeved at one end of the second rotating shaft (31) and the bottom end of the first rotating shaft (10), the two second conical gears (29) are connected in a meshing manner, a first worm wheel (32) and a first worm (33) are arranged inside the second protective box body (30), first worm wheel (32) and first worm (33) meshing connection, first worm wheel (32) and second pivot (31) fixed sleeve joint, first worm (33) rotate and install the inside at second protection box (30), the one end of first worm (33) and the one end fixed connection of connecting axle (34), the end and the fixed plate (25) of connecting axle (34) rotate and are connected, the bottom fixed connection of fixed plate (25) and mounting panel (2), the tip and second knob (26) fixed connection of connecting axle (34).

6. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 2, characterized in that: the utility model discloses a round bar cover, including mounting panel (2), locating hole (23), round bar cover (19) surface cover is equipped with and keeps off ring (21), the bottom fixedly connected with movable block (42) of keeping off ring (21), movable block (42) and direction square groove (22) sliding connection who sets up on mounting panel (2) surface, locating hole (43) have been seted up in the front of movable block (42), locating hole (23) of a plurality of equidistant distribution are seted up in the front of mounting panel (2), locating hole (23) and direction square groove (22) intercommunication, one of them locating hole (23) clearance fit is connected with bolt (24), bolt (24) are connected with locating hole (43) clearance fit.

7. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 1, characterized in that: the positioning and pressing blocking mechanism (13) comprises: layering (1301), cylinder (1302), circle axle (1303), external screw thread (1304) and screw hole (1305), the figure of layering (1301) is two, two screw hole (1305) have all been seted up at the middle part of layering (1301), two external screw thread (1304) have been seted up on the surface of circle axle (1303), circle axle (1303) are through external screw thread (1304) and screw hole (1305) threaded connection, the bottom and mounting panel (2) of circle axle (1303) rotate to be connected, the tip of layering (1301) with set up side spout (44) sliding connection on fixed strip (5) lateral wall, the face fixed mounting of layering (1301) has a plurality of equidistant cylinder (1302) that distribute, the top fixed mounting of circle axle (1303) has rotary disk (16).

8. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 1, characterized in that: round holes (1401) are formed in the inner wall of the top of the square sleeve (14) and the inner wall of the bottom of the square sleeve (14), and the round holes (1401) are in clearance fit connection with the cylinders (1302).

9. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 7, characterized in that: a guide sleeve (39) is arranged at the bottom end of the round shaft (1303), fixing frames (38) are fixedly connected to two sides of the guide sleeve (39), the tail end of each fixing frame (38) is fixedly connected with the bottom of the mounting plate (2), the guide sleeve (39) is in clearance fit connection with the square rod (40), a square hole (45) is formed in the bottom end of the round shaft (1303), the top end of the square rod (40) is in clearance fit connection with the square hole (45), and a spring (41) is sleeved on the surface of the square rod (40); the square rod (40) is elastically connected with the bottom of the guide sleeve (39) through a spring (41).

10. The stably-supported rock-soil tunnel foundation pit supporting structure according to claim 1, characterized in that: one end of the reinforcing support rod (15) is fixedly connected with the side wall of the side plate (4).