CN113914329B - Support firm ground tunnel underground structure - Google Patents

Abstract

The application discloses ground tunnel underground structure that supports firmly, 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

A rock-soil tunnel foundation pit supporting structure with stable support

technical field

The invention relates to a tunnel foundation pit support structure, in particular to a rock-soil tunnel foundation pit support structure with stable support, belonging to the technical field of tunnel foundation pit sidewall support.

Background technique

The foundation pit support is to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit; the support, reinforcement and protection measures are adopted for the side wall of the foundation pit and the surrounding environment.

The stability of the existing support structure is average; the protection of the deep foundation pit of rock and soil is not enough; and the shape of the existing support structure is generally fixed; one support structure is suitable for the support of deep foundation pits of one width; limitation; in the existing patent document "CN214245746U a kind of foundation pit support structure with tunnel on the side wall of the foundation pit", although the support of the side wall of the tunnel foundation pit can be carried out, it lacks the function of adjusting the width and height direction, It is not easy to apply to foundation pits of different heights and widths. At present, there is no stable rock-soil tunnel foundation pit support structure that can be adjusted in width and height.

SUMMARY OF THE INVENTION

In order to solve the deficiencies of the prior art, the present application provides a rock-soil tunnel foundation pit support structure with stable support, which is used to solve the problem that it is difficult to support the side walls of the foundation pit with different widths and heights in the prior art.

Furthermore, in order to solve the problem that the supporting effect of the sidewall of the foundation pit is not good in the prior art, it is difficult to support and block the sidewall.

According to one aspect of the present application, a rock-soil tunnel foundation pit supporting structure with stable support is provided, comprising: a base plate, a mounting plate, a fixing bar, a plate member, a spacing adjustment mechanism, a positioning and pressing blocking mechanism, a square sleeve and a reinforcement A support rod; wherein, a mounting plate is fixedly installed on the top of the bottom plate, a plurality of mounting holes are opened on the surface of the bottom plate along the length direction, and both sides of the top of the bottom plate are fixedly installed with fixing bars, and the The number is two, and one side of the two fixing bars is provided with a plate member that can be adjusted vertically, the number of the plate member is two, and a spacing adjustment mechanism is arranged between the two plate members; Two positioning and pressing blocking mechanisms are installed between the two fixing bars, a plurality of square sleeves are symmetrically sleeved on the positioning and pressing blocking mechanisms, and the square sleeves are fixedly connected with reinforcement support rods. The ends of the rods are connected to the side walls of the plate.

Further, the plate includes: a side plate, a movable plate, a second cylindrical gear, a movable rod and a round rod sleeve, the interior of the side plate is vertically opened with a positioning groove, and the positioning groove is fitted with the movable plate , the front edge of the movable plate is provided with a tooth slot, the tooth slot is meshed and connected with the second cylindrical gear, the middle part of the second cylindrical gear is fixedly connected with one end of the movable rod, and the movable rod has a clearance between the round rod sleeve The movable rod is rotatably installed with the side plate in a cooperative connection.

Further, the round rod sleeve is rotatably installed with the side wall of the first protection box, and the round rod sleeve extends to the inside of the first protection box, the round rod sleeve is fixedly sleeved with the second worm gear, and the first The second worm gear is engaged with the second worm, the second worm is rotatably installed inside the first protective box, and one end of the second worm is fixedly connected with the first knob.

Further, the distance adjustment mechanism includes: a threaded rod, a first threaded hole, a first cylindrical gear, a gear column, a guide pipe and a guide positioning hole, and one end of the threaded rod is rotatably connected to the bottom position of one side of the side plate. , the first threaded hole and the guide positioning hole are both opened on the strip surface of the fixing strip, the threaded rod is threadedly connected with the first threaded hole, and the end of the threaded rod is fixedly sleeved with a first cylindrical gear, The first cylindrical gear is meshed with the gear column, the gear column is rotatably installed between two fixing bars, one end of the guide pipe is fixedly connected with the bottom position of one side of the side plate, and the guide pipe is connected to the guide pipe. The positioning holes are connected with clearance fit, and the guide pipe piece is connected with the round rod sleeve with clearance fit.

Further, a first bevel gear is fixedly sleeved in the middle of the gear column, the number of the first bevel gears is two, and the other first bevel gear is fixedly sleeved with the top end of the first rotating shaft, and the The first rotating shaft is rotatably connected with the mounting plate, one side of the first rotating shaft is provided with a second protection box, the second protection box is fixedly connected with the bottom of the mounting plate, and one side of the second protection box is A second rotating shaft is rotatably installed, one end of the second rotating shaft and the bottom end of the first rotating shaft are fixedly sleeved with a second bevel gear, the two second bevel gears are meshed and connected, and the second protection The inside of the box is provided with a first worm gear and a first worm, the first worm gear and the first worm are meshed and connected, the first worm gear is fixedly sleeved with the second shaft, and the first worm is rotatably installed on the second protection. Inside the box, one end of the first worm is fixedly connected to one end of the connecting shaft, the end of the connecting shaft is rotatably connected to the fixing plate, the fixing plate is fixedly connected to the bottom of the mounting plate, and the end of the connecting shaft The part is fixedly connected with the second knob.

Further, a blocking ring is sleeved on the surface of the round rod sleeve, the bottom of the blocking ring is fixedly connected with a movable block, and the movable block is slidably connected with the guiding square groove opened on the surface of the mounting plate. There are positioning holes, the front of the mounting plate is provided with a number of positioning sockets that are equally spaced, the positioning sockets are communicated with the guiding square groove, and one of the positioning sockets is connected with a pin in a clearance fit. Clear fit connection with the positioning hole.

Further, the positioning and pressing blocking mechanism includes: a bead, a cylinder, a circular shaft, an external thread and a threaded hole, the number of the bead is two, and the middle of the two beads is provided with a threaded hole, and the circular The surface of the shaft is provided with two external threads, the circular shaft is threadedly connected to the threaded hole through the external thread, the bottom end of the circular shaft is rotatably connected to the mounting plate, and the end of the pressing strip is connected to the side wall of the fixing strip. The side slide grooves on the upper side slides are slidably connected, the plate surface of the pressing strip is fixedly installed with a plurality of cylinders distributed at equal intervals, and the top end of the circular shaft is fixedly installed with a rotating disk.

Further, both the top inner wall of the square sleeve and the bottom inner wall of the square sleeve are provided with circular holes, and the circular holes are connected with the cylinder in a clearance fit.

Further, the bottom end of the circular shaft is provided with a guide sleeve, both sides of the guide sleeve are fixedly connected with a fixing frame, the end of the fixing frame is fixedly connected with the bottom of the mounting plate, and the guide sleeve is connected with the square rod. Clearly fit connection, the bottom end of the circular shaft is provided with a square hole, the top of the square rod is connected with the square hole with clearance fit, the surface of the square rod is sleeved with a spring; the square rod is elastically connected to the bottom of the guide sleeve through the spring .

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

The benefits of the present application are: to provide a rock-soil tunnel foundation pit support structure with support and stability that can be adjusted in width and height, can support and reinforce the side walls of the tunnel foundation pit, and has a vertical telescopic and adjustable support structure. Plate and spacing adjustment mechanism, the vertical height of the plate can be adjusted, which can meet the support of the sidewall of the foundation pit of different heights within a certain range, and the distance between the two plates can be adjusted, and the distance between the two can be adjusted. , so that it can meet the support requirements of foundation pit side walls of different widths within a certain range; at the same time, the overall reinforcement support is stable, and the spacing adjustment mechanism is used for bearing support, and there is also a positioning and pressing blocking mechanism for the positioning of the square sleeve. The setting of the square sleeve and the reinforced support rod can provide the support of the plate and improve the effect of the support.

Description of drawings

The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the application and make other features, objects and advantages of the application more apparent. The accompanying drawings and descriptions of the exemplary embodiments of the present application are used to explain the present application, and do not constitute an improper limitation of the present application. In the attached image:

1 is a schematic structural diagram of a rock-soil tunnel foundation pit supporting structure with stable support according to an embodiment of the present application;

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

Fig. 3 is the structural representation of the movable plate and the second worm in the embodiment shown in Fig. 1;

4 is a schematic structural diagram of the positioning and pressing blocking mechanism and the bottom of the positioning and pressing blocking mechanism in the embodiment shown in FIG. 1;

Fig. 5 is the structural schematic diagram of the first cylindrical gear and the gear column in the embodiment shown in Fig. 1;

Fig. 6 is the structural representation of the movable block and the guide square groove in the embodiment shown in Fig. 1;

Fig. 7 is the structural representation of the circular shaft and the bead in the embodiment shown in Fig. 1;

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

Fig. 9 is the structural representation of cylindrical distribution in the embodiment shown in Fig. 1;

FIG. 10 is a schematic structural diagram of a state in which a cylinder and a circular hole are fitted and positioned in the embodiment shown in FIG. 1;

FIG. 11 is a schematic structural diagram of the circular shaft and the square hole in the embodiment shown in FIG. 1 .

The meaning of the reference signs in the figure: 1. Bottom plate; 2. Mounting plate; 3. Mounting hole; 4. Side plate; 5. Fixing strip; 6. Guide positioning hole; 7. Threaded rod; 9, the first cylindrical gear; 10, the first shaft; 11, the gear column; 12, the first bevel gear; 13, the positioning and pressing blocking mechanism; 1301, the bead; 1302, the cylinder; ; 1305, threaded hole; 14, square sleeve; 1401, round hole; 15, reinforced support rod; 16, rotating disk; 17, guide pipe fitting; 18, first protection box; 19, round rod sleeve; 1901, movable rod ;20, the first knob; 21, the retaining ring; 22, the guiding square slot; 23, the positioning jack; 24, the latch; 25, the fixed plate; 26, the second knob; 27, the movable plate; 28, the tooth slot; 29 30, the second protective box; 31, the second shaft; 32, the first worm gear; 33, the first worm; 34, the connecting shaft; 35, the second cylindrical gear; 36, the second worm gear; 37, the second worm; 38, the fixed frame; 39, the guide sleeve; 40, the square rod; 41, the spring; 42, the movable block; 43, the positioning hole; 44, the side chute; 45, the square hole.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientation or positional relationship indicated by "vertical", "horizontal", "horizontal", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are primarily used to better describe the present application and its embodiments, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation.

In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

Furthermore, the terms "installed", "set up", "provided with", "connected", "connected", "socketed" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or a unitary structure; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediary, or between two devices, elements, or components. internal communication. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

1 to 11, including: a base plate 1, a mounting plate 2, a fixing bar 5, a plate, a spacing adjustment mechanism, a positioning and pressing blocking mechanism 13, a square sleeve 14 and a reinforcing support rod 15;

A mounting plate 2 is fixedly installed on the top of the bottom plate 1, a plurality of mounting holes 3 are opened on the surface of the bottom plate 1 along the length direction, and fixing bars 5 are fixedly installed on both sides of the top of the bottom plate 1. The number of the fixing bars 5 is two, and one side of the two fixing bars 5 is provided with a plate member that can be adjusted vertically. There is a spacing adjustment mechanism; two positioning and pressing blocking mechanisms 13 are installed between the two fixing bars 5, and a plurality of square sleeves 14 are symmetrically sleeved on the positioning and pressing blocking mechanisms 13, and the square sleeves 14 are fixed A reinforcement support rod 15 is connected, and the end of the reinforcement support rod 15 is connected with the side wall of the panel; it has a panel that can be vertically telescopically adjusted and a spacing adjustment mechanism, and the vertical height of the panel can be adjusted at a certain It can meet the support of foundation pit side walls of different heights within a certain range, and at the same time, the distance between the two plates can be adjusted, and the distance between the two can be adjusted, so that the support requirements of foundation pit side walls of different widths can be met within a certain range; The overall reinforcement and support are stable, and the spacing adjustment mechanism is used for bearing support, and there is also a positioning and pressing blocking mechanism 13 for the positioning of the square sleeve 14. The square sleeve 14 and the reinforcement support rod 15 can provide support for the plate , which improves the support effect.

As shown in FIG. 1 and FIG. 3 , as a specific solution, the plate includes: a side plate 4, a movable plate 27, a second cylindrical gear 35, a movable rod 1901 and a round rod sleeve 19. The interior of the side plate 4 is vertically arranged. There is a positioning slot in the upper direction, the positioning slot is fitted with a movable plate 27, and the front edge of the movable plate 27 is provided with a tooth slot 28, and the tooth slot 28 is meshed with the second cylindrical gear 35. The middle part of the 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 with clearance fit, and the movable rod 1901 is rotatably installed with the side plate 4; the round rod sleeve 19 is connected to the first protection The side wall of the box body 18 is rotatably installed, and the round rod sleeve 19 extends to the inside of the first protective box body 18 . 37 is engaged and connected, the second worm 37 is rotatably installed inside the first protective box 18, and one end of the second worm 37 is fixedly connected with the first knob 20. By rotating the first knob 20, the second worm 37 To rotate, through the meshing transmission between the second worm 37 and the second worm wheel 36, the round rod sleeve 19 and the movable rod 1901 can be driven to rotate together, the second cylindrical gear 35 will rotate together with the movable rod 1901, and the second cylindrical When the gear 35 rotates, the movable plate 27 can be driven to move in the upward and downward directions in cooperation with the meshing transmission of the tooth slot 28. The movable plate 27 is guided by the side plate 4 to realize adjustment, thereby changing the height of the support surfaces on both sides. , to meet different support height requirements, the movable rod 1901 and the round rod sleeve 19 can be moved relative to each other to cope with the adjustment of the distance between the two plates, that is, it has a telescopic function.

As shown in Figures 1 and 2, as a specific solution, the distance adjustment mechanism includes: a threaded rod 7, a first threaded hole 8, a first cylindrical gear 9, a gear column 11, a guide pipe 17 and a guide positioning hole 6, so 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 opened on the surface of the fixing strip 5, and the threaded rod 7 is connected to the bottom of the side plate 4. The first threaded hole 8 is threadedly connected, the end of the threaded rod 7 is fixedly sleeved with a first cylindrical gear 9, the first cylindrical gear 9 is meshed with the gear column 11, and the gear column 11 is rotatably installed on two fixed Between the bars 5, one end of the guide pipe 17 is fixedly connected with the bottom position of one side of the side plate 4, the guide pipe 17 is connected with the guide positioning hole 6 in a clearance fit, and the guide pipe 17 has a clearance between the round rod sleeve 19. Matching connection; a first bevel gear 12 is fixedly sleeved in the middle of the gear column 11 , the number of the first bevel gears 12 is two, and the other first bevel gear 12 is fixed to the top of the first shaft 10 The first rotating shaft 10 is rotatably connected with the mounting plate 2 , and a second protective box 30 is provided on one side of the first rotating shaft 10 , and the second protective box 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 30, and one end of the second rotating shaft 31 and the bottom end of the first rotating shaft 10 are fixedly sleeved with a second bevel gear 29, two The second bevel gears 29 are meshed and connected, the second protective box 30 is provided with a first worm gear 32 and a first worm 33, and the first worm gear 32 and the first worm 33 are meshed and connected. The first worm wheel 32 is fixedly sleeved with the second shaft 31 , the first worm 33 is rotatably installed inside the second protective box 30 , and one end of the first worm 33 is fixedly connected with one end of the connecting shaft 34 . The 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, and the second knob 26 is rotated to drive the The connecting shaft 34 and the first worm 33 rotate together, through the meshing transmission between the first worm 33 and the first worm wheel 32, so that the second rotating shaft 31 rotates, and through the meshing transmission of the two second bevel gears 29, thereby The first rotating shaft 10 is rotated, and the gear column 11 is rotated through the meshing transmission of the two first bevel gears 12. Through the meshing transmission between the gear column 11 and the two first cylindrical gears 9, two threads can be driven. The rod 7 rotates, and the threads of the two threaded rods 7 are rotated in opposite directions. Through the guidance of the guide pipe 17 and the guide positioning hole 6, the two side plates 4 can be driven to move in opposite directions. The spacing is adjustable, so that the side plate 4 and the tooth slot 28 are close to the side wall of the foundation pit and contact with the side wall, and at the same time, the reinforcement support rod 15 is driven to move, so that the circular hole 1401 is aligned with a cylinder 1302 on the bead 1301 .

As shown in FIG. 1 and FIG. 6 , as a specific solution, a blocking ring 21 is sleeved on the surface of the round rod sleeve 19 , and a movable block 42 is fixedly connected to the bottom of the blocking ring 21 , and the movable block 42 is connected with the opening in the installation The guiding square grooves 22 on the surface of the plate 2 are slidably connected, the front of the movable block 42 is provided with positioning holes 43, and the front of the mounting plate 2 is provided with a number of positioning holes 23 distributed at equal intervals. The positioning holes 23 Connected with the guide square groove 22, one of the positioning holes 23 is connected with a pin 24 in a clearance fit, and the pin 24 is connected with the positioning hole 43 in a clearance fit, and the retaining ring 21 can be used for positioning and blocking adjustment. 17 provides blocking, plays the role of limit, and improves the effect of support and reinforcement.

As shown in FIG. 1 , FIG. 4 , FIG. 7 , FIG. 8 , FIG. 9 , and FIG. 10 , as a specific solution, the positioning and pressing blocking mechanism 13 includes: a bead 1301 , a cylinder 1302 , a circular shaft 1303 , an external thread 1304 and a thread Holes 1305, the number of the pressure strips 1301 is two, the middle of the two pressure strips 1301 are both provided with threaded holes 1305, the surface of the circular shaft 1303 is provided with two external threads 1304, the circular shaft 1303 passes through The external thread 1304 is threadedly connected with the threaded hole 1305, the bottom end of the circular shaft 1303 is rotatably connected with the mounting plate 2, and the end of the pressure strip 1301 is slidably connected with the side chute 44 opened on the side wall of the fixing strip 5, so The plate surface of the pressure strip 1301 is fixedly installed with a plurality of cylinders 1302 distributed at equal intervals, the top end of the circular shaft 1303 is fixedly installed with the rotating disk 16, and the bottom end of the circular shaft 1303 is provided with a guide sleeve 39, the guide sleeve Both sides of 39 are fixedly connected with a fixing frame 38, the end of the fixing frame 38 is fixedly connected with the bottom of the mounting plate 2, the guide sleeve 39 is connected with the square rod 40 with clearance fit, and the bottom end of the circular shaft 1303 is opened There is a square hole 45, the top of the square rod 40 is connected with the square hole 45 in a clearance fit, the surface of the square rod 40 is sleeved with a spring 41; the square rod 40 is elastically connected with the bottom of the guide sleeve 39 through the spring 41; The rod 40 and the square rod 40 are disengaged from the square hole 45, the positioning of the round shaft 1303 is canceled, and the rotary disk 16 is rotated to make the round shaft 1303 rotate. , the pressure bar 1301 will be guided by the side chute 44 and can move. It should be noted that the threads between the two external threads 1304 on the round shaft 1303 are in opposite directions, so that the two pressure bars 1301 move in opposite directions. The distance between the two pressure bars 1301 increases until the cylinder 1302 is inserted into the circular hole 1401 for positioning; after positioning, loosen the square rod 40 pulled down, and the square rod 40 can be inserted into the square hole 45 by the action of the spring 41, Re-positioning to complete the use.

The top inner wall of the square sleeve 14 and the bottom inner wall of the square sleeve 14 are both provided with a circular hole 1401 , and the circular hole 1401 is connected with the cylinder 1302 by clearance fit for limiting and blocking.

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

How to use: When the whole is in use, the entire structure is located in the middle of the foundation pit. First, the cylinder 1302 and the circular hole 1401 are in a separated state. By turning the first knob 20, the second worm 37 is rotated, and the second worm 37 The meshing transmission between the worm gears 36 can drive the round rod sleeve 19 and the movable rod 1901 to rotate together, the second cylindrical gear 35 will rotate together with the movable rod 1901, and when the second cylindrical gear 35 rotates, it matches the meshing of the tooth slot 28 The function of transmission can drive the movable plate 27 to move up and down, and the movable plate 27 is guided by the side plate 4 to realize adjustment, so that the height of the support surfaces on both sides can be changed to meet different support height requirements;

Further, the second knob 26 is rotated to drive the connecting shaft 34 and the first worm 33 to rotate together, through the meshing transmission between the first worm 33 and the first worm wheel 32, so that the second rotating shaft 31 is rotated, through the two The meshing transmission of the second bevel gear 29 causes the first shaft 10 to rotate, and the gear column 11 rotates through the meshing transmission of the two first bevel gears 12 . The meshing transmission between the two threaded rods 7 can drive the two threaded rods 7 to rotate. The threads of the two threaded rods 7 have opposite directions of rotation. Through the guidance of the guide pipe piece 17 and the guide positioning hole 6, the two side plates 4 can be driven to rotate in opposite directions. The distance between the two side plates 4 can be adjusted, so that the side plate 4 and the tooth slot 28 can be close to the side wall of the foundation pit and contact with the side wall, and at the same time, the reinforcing support rod 15 will be driven to move, so that the circular hole 1401 and the bead 1301 are moved. A cylinder 1302 on the top is aligned. By pulling down the square rod 40, the square rod 40 is disengaged from the square hole 45, canceling the positioning of the round shaft 1303, and rotating the rotary disk 16 to make the round shaft 1303 rotate. It can drive the pressure strip 1301 to move, and the pressure strip 1301 will be guided by the side chute 44 and can move. The two pressure bars 1301 move in opposite directions, and the distance between the two pressure bars 1301 increases until the cylinder 1302 is inserted into the circular hole 1401 for positioning; It can be inserted into the square hole 45, re-positioning, and complete the use;

Further, by pulling the blocking ring 21 to slide on the round rod sleeve 19, the movable block 42 slides in the guiding square groove 22, so that the blocking ring 21 is in contact with the guiding pipe 17, and the positioning hole 43 is aligned with a positioning socket 23. , by inserting the pin 24, the pin 24 is in clearance fit with the positioning hole 43 and the positioning hole 23 to complete the positioning and maintain the position of the retaining ring 21, which can be blocked; further through the installation hole 3, install the rod or the anchor rod so that the bottom plate 1 is fixed On the ground of the foundation pit, realize fixation;

The support of the side wall is provided by the side plate 4 and the movable plate 27, wherein the bearing is carried by the spacing adjustment mechanism and the support and reinforcement of the reinforced support rod 15 are further provided with a blocking ring 21 for blocking, the overall support is stable, and the use effect is good.

According to the technical solution of the present application, the entire geotechnical tunnel foundation pit supporting structure can be used to support and reinforce the side walls of the tunnel foundation pit. It can meet the support of foundation pit side walls of different heights within a certain range, and at the same time, the distance between the two plates can be adjusted, and the distance between the two can be adjusted, so that it can meet the support of foundation pit side walls of different widths within a certain range. At the same time, the overall reinforcement and support are stable, and the spacing adjustment mechanism is used for bearing support, and there is also a positioning and pressing blocking mechanism 13 for the positioning of the square sleeve 14. The support of the parts improves the effect of the support.

The above descriptions are only specific embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (4)

1. a rock-soil tunnel foundation pit supporting structure with stable support, is characterized in that: Including: a base plate (1), a mounting plate (2), a fixing strip (5), a plate, a spacing adjustment mechanism, a positioning and pressing blocking mechanism (13), a square sleeve (14) and a reinforcing support rod (15); Wherein, a mounting plate (2) is fixedly installed on the top of the bottom plate (1), a plurality of mounting holes (3) are opened on the surface of the bottom plate (1) along the length direction, and two sides of the top of the bottom plate (1) Both fixing bars (5) are fixedly installed, the number of the fixing bars (5) is two, and one side of the two fixing bars (5) is provided with a plate member that can be adjusted vertically. The number of parts is two, and a spacing adjustment mechanism is arranged between the two said plate parts; two positioning and pressing blocking mechanisms (13) are installed between the two said fixing bars (5), and the positioning and pressing A plurality of square sleeves (14) are symmetrically sleeved on the blocking mechanism (13), the square sleeves (14) are fixedly connected with a reinforcement support rod (15), and the end of the reinforcement support rod (15) is connected to the side of the plate member wall connection; the positioning and pressing blocking mechanism (13) includes: a bead (1301), a cylinder (1302), a circular shaft (1303), an external thread (1304) and a threaded hole (1305). The number is two, the middle of the two pressure strips (1301) are provided with threaded holes (1305), the surface of the circular shaft (1303) is provided with two external threads (1304), the circular shaft (1303) ) is threadedly connected to the threaded hole (1305) through the external thread (1304), the bottom end of the circular shaft (1303) is rotatably connected to the mounting plate (2), and the end of the pressure strip (1301) is connected to the fixing strip (1301). 5) The side slide grooves (44) on the side walls are slidably connected, the plate surface of the pressure strip (1301) is fixedly installed with a plurality of equally spaced cylinders (1302), and the top of the circular shaft (1303) is fixedly installed with A rotating disk (16); circular holes (1401) are formed on the top inner wall of the square sleeve (14) and the bottom inner wall of the square sleeve (14), and the circular holes (1401) are clearance-fitted with the cylinder (1302) connection; the bottom end of the circular shaft (1303) is provided with a guide sleeve (39), both sides of the guide sleeve (39) are fixedly connected with a fixing frame (38), and the end of the fixing frame (38) is connected to The bottom of the mounting plate (2) is fixedly connected, the guide sleeve (39) is connected with the square rod (40) with clearance fit, the bottom end of the circular shaft (1303) is provided with a square hole (45), the square rod ( 40) The top end is connected with the square hole (45) in a clearance fit, the surface of the square rod (40) is sleeved with a spring (41); the square rod (40) is elastically connected to the bottom of the guide sleeve (39) through the spring (41) ; The plate member includes: a side plate (4), a movable plate (27), a second cylindrical gear (35), a movable rod (1901) and a round rod sleeve (19), and the inner edge of the side plate (4) is A positioning slot is vertically opened, a movable plate (27) is fitted and installed in the positioning slot, and a tooth slot (28) is opened on the front edge of the movable plate (27), and the tooth slot (28) is connected with the second cylinder The gear (35) is meshed and connected, and the middle part of the second cylindrical gear (35) is fixedly connected with one end of the movable rod (1901), and the movable rod (1901) The movable rod (1901) is rotatably installed with the side plate (4); the round rod sleeve (19) is rotatably installed with the side wall of the first protection box (18), And the round rod sleeve (19) extends to the inside of the first protective box (18), the round rod sleeve (19) is fixedly sleeved with the second worm wheel (36), and the second worm wheel (36) is connected with the second worm wheel (36) The worm (37) is engaged and connected, the second worm (37) is rotatably installed inside the first protective box (18), and one end of the second worm (37) is fixedly connected with the first knob (20); A blocking ring (21) is sleeved on the surface of the round rod sleeve (19), and a movable block (42) is fixedly connected to the bottom of the blocking ring (21), and the movable block (42) is connected to the mounting plate (2). The guiding square grooves (22) on the surface are slidably connected, the front side of the movable block (42) is provided with positioning holes (43), and the front side of the mounting plate (2) is provided with a number of equidistant positioning holes (23). ), the positioning sockets (23) communicate with the guiding square groove (22), one of the positioning sockets (23) is connected with a pin (24) in a clearance fit, and the pin (24) is connected to the positioning hole (43) Clearance fit connection. 2. A rock-soil tunnel foundation pit support structure with stable support according to claim 1, characterized in that: the spacing adjustment mechanism comprises: a threaded rod (7), a first threaded hole (8), a first The cylindrical gear (9), the gear column (11), the guide pipe (17) and the guide positioning hole (6), one end of the threaded rod (7) is rotatably connected with the bottom position of one side of the side plate (4), so The first threaded hole (8) and the guide positioning hole (6) are both opened on the surface of the fixing bar (5), the threaded rod (7) is threadedly connected with the first threaded hole (8), and the The end of the threaded rod (7) is fixedly sleeved with a first cylindrical gear (9), the first cylindrical gear (9) is meshed and connected with a gear column (11), and the gear column (11) is rotatably installed on two fixed Between the bars (5), one end of the guide pipe piece (17) is fixedly connected with the bottom position of one side of the side plate (4), and the guide pipe piece (17) is connected with the guide positioning hole (6) by clearance fit, so The guide pipe piece (17) is connected with the round rod sleeve (19) in clearance fit. 3. A rock-soil tunnel foundation pit support structure with stable support according to claim 2, characterized in that: a first bevel gear (12) is fixedly sleeved in the middle of the gear column (11), so The number of the first bevel gears (12) is two, and the other first bevel gear (12) is fixedly sleeved with the top end of the first rotating shaft (10), and the first rotating shaft (10) is connected to the mounting plate (2). ) rotatably connected, one side of the first shaft (10) is provided with a second protection box (30), the second protection box (30) is fixedly connected with the bottom of the mounting plate (2), the first A second rotating shaft (31) is rotatably installed on one side of the two protective boxes (30), and a second bevel gear is fixedly sleeved on one end of the second rotating shaft (31) and the bottom end of the first rotating shaft (10). (29), the two second bevel gears (29) are meshed and connected, the second protective box (30) is provided with a first worm gear (32) and a first worm (33) inside, the The first worm gear (32) is meshed with the first worm (33), the first worm gear (32) is fixedly sleeved with the second shaft (31), and the first worm (33) is rotatably mounted on the second protective box Inside the body (30), one end of the first worm (33) is fixedly connected to one end of the connecting shaft (34), and the end of the connecting shaft (34) is rotatably connected to the fixing plate (25), the fixing plate (25) is fixedly connected with the bottom of the mounting plate (2), and the end of the connecting shaft (34) is fixedly connected with the second knob (26). 4. A rock-soil tunnel foundation pit support structure with stable support according to claim 1, characterized in that: one end of the reinforcing support rod (15) is fixedly connected to the side wall of the side plate (4).

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