CN216277928U - Tunnel steel lining mounting system - Google Patents

Abstract

The utility model relates to the field of railway tunnel disease treatment, and provides a tunnel steel lining mounting system which comprises a steel lining assembly, a lifting frame, a mounting rack and a rail car. The steel lining assembly comprises a pair of steel lining half bodies, the mounting rack comprises an umbrella support mechanism and a lifting mechanism, the umbrella support mechanism is used for driving the steel lining half bodies on two sides to rotate, and the lifting mechanism is used for driving the umbrella support mechanism to move up and down. The steel lining assembly is assembled outside the tunnel, and then placed on the mounting rack through the lifting frame, and the steel lining assembly is transported through the rail car. In the installation process, the steel lining half bodies on the two sides can be conveniently unfolded and moved in place by adjusting the umbrella support mechanism and the lifting mechanism, and are attached to the original tunnel lining to be maintained and reinforced, so that the steel lining is completely installed. Therefore, under the time limit of the skylight, the installation of the whole ring and the whole section of steel lining is ensured to be completed, and a new complete tunnel lining structure system is formed. Once the steel lining is installed, the normal operation of the railway can be recovered, and the driving safety is guaranteed.

Description

Tunnel steel lining mounting system

Technical Field

The utility model relates to the technical field of railway tunnel disease treatment, in particular to a tunnel steel lining mounting system.

Background

The railway tunnel diseases comprise lining cracking, peeling, block falling, water leakage and the like. The tunnel diseases affect normal driving and endanger driving safety.

In view of the time limit of ' skylights ' (that is, the time reserved for maintenance every day of a railway, generally 4 hours) ', the current railway tunnel disease control mostly adopts ' bar-repairing ' modes such as local concrete spraying on a tunnel lining, concrete spraying by adding a steel bar net, grouting and the like.

However, the tunnel lining repaired by the 'bar-repairing' method can be only temporarily and locally improved, and the risks of driving safety hazards such as water leakage, lining stripping and block falling and the like still exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tunnel steel lining installation system, which is used for solving the problems in the prior art and thoroughly solving the conflict between the normal operation of railways and steel lining installation engineering in space and time.

The utility model provides a tunnel steel lining installation system, which comprises:

the steel lining assembly comprises a pair of steel lining half bodies which are symmetrically arranged about a central line of the tunnel and matched with the inner contour of the tunnel, the pair of steel lining half bodies are detachably connected, and locking holes for connecting a tunnel lining to be repaired and reinforced are reserved in the pair of steel lining half bodies;

the lifting frame is used for lifting the steel lining assembly and is detachably connected with the steel lining assembly;

the steel lining assembly comprises a steel lining assembly, a mounting rack and a lifting mechanism, wherein the steel lining assembly is used for mounting the steel lining assembly on a tunnel lining to be maintained and reinforced, the pair of steel lining half bodies are positioned on two sides of the mounting rack, the mounting rack comprises a canopy supporting mechanism and the lifting mechanism connected with the canopy supporting mechanism, the lifting frame is detachably connected with the canopy supporting mechanism, the canopy supporting mechanism is used for driving the steel lining half bodies to be folded towards the direction close to the center line of the tunnel or to be expanded away from the center line of the tunnel, and the lifting mechanism is used for driving the canopy supporting mechanism to move along the height direction of the tunnel;

the rail car is used for transporting the steel lining assembly to a position to be installed in the tunnel, the steel lining assembly can move along the length direction of the tunnel, and the installation rack is installed on the rail car.

According to the tunnel steel lining mounting system provided by the utility model, at least two steel lining components are arranged side by side along the length direction of a tunnel, and two adjacent steel lining components are fixedly connected.

According to the tunnel steel lining mounting system provided by the utility model, the lifting frame comprises:

the pair of node plates are symmetrically arranged around the center line of the tunnel and matched with the steel lining half bodies, and the pair of node plates are detachably connected with the pair of steel lining half bodies;

the pair of connecting longitudinal beams are arranged at intervals along the width direction of the tunnel, one side of each connecting longitudinal beam is connected with the node plate, and the other side of each connecting longitudinal beam is detachably connected with the umbrella support mechanism;

a pair of connecting beams detachably connected between the pair of connecting longitudinal beams and arranged at intervals along the length direction of the tunnel,

and the at least two lifting lugs are used for connecting the lifting device.

According to the tunnel steel lining mounting system provided by the utility model, the umbrella support mechanism comprises:

the jacking cross beam is arranged on the lifting mechanism;

the pair of connecting beams are symmetrically arranged around the center line of the tunnel and are hinged with each other, and the connecting longitudinal beams are connected with the connecting beams;

and the pair of telescopic assemblies are symmetrically arranged about the center line of the tunnel and do telescopic motion along the height direction of the tunnel, one end of each telescopic assembly is hinged with the connecting beam, and the other end of each telescopic assembly is hinged with the jacking cross beam.

According to the tunnel steel lining mounting system provided by the utility model, the umbrella support mechanism further comprises a pair of supporting beams, one end of each supporting beam is hinged with one end, close to the jacking cross beam, of the telescopic assembly, and the other end of each supporting beam is hinged with one end, far away from the telescopic assembly, of the connecting beam.

According to the tunnel steel lining installation system provided by the utility model, the lifting mechanism comprises:

the rack beam is arranged on the rail car;

and the lifting jack is arranged on the rack cross beam and used for driving the umbrella support mechanism to move along the height direction of the tunnel.

According to the tunnel steel lining mounting system provided by the utility model, the mounting rack further comprises a portal bracket in sliding connection with the rack cross beam, the rack cross beam moves on the portal bracket along the width direction of the tunnel, and the portal bracket is connected with the rail car.

The tunnel steel lining mounting system further comprises a guide rail arranged on the rail car, the guide rail is arranged along the length direction of the tunnel, and the door-shaped support is matched with the guide rail and slides along the guide rail.

The tunnel steel lining installation system further comprises a group of positioning abutments for calibrating the steel lining assembly, wherein the positioning abutments are matched with the inner contour of the tunnel and provided with positioning grooves for inserting the bottom of the steel lining assembly.

The tunnel steel lining mounting system further comprises adjustable supporting legs arranged on the rail car, and the adjustable supporting legs are used for adjusting the height of the rail car so that the rail car can be separated from a rail and the mounting rack can be adjusted to be in a horizontal posture.

The utility model provides a tunnel steel lining installation system, which comprises: the steel lining assembly comprises a pair of steel lining half bodies which are symmetrically arranged about a tunnel midline and matched with a tunnel lining, the pair of steel lining half bodies are detachably connected, and locking holes for connecting the tunnel lining to be maintained and reinforced are reserved in the pair of steel lining half bodies; the lifting frame is used for lifting the steel lining assembly and is detachably connected with the steel lining assembly; the mounting rack is used for mounting the steel lining assembly on a tunnel lining to be maintained and reinforced, the pair of steel lining half bodies are positioned on two sides of the mounting rack, the mounting rack comprises a umbrella support mechanism and a lifting mechanism connected with the umbrella support mechanism, the lifting frame is detachably connected with the umbrella support mechanism, the umbrella support mechanism is used for driving the steel lining half bodies to rotate towards the direction close to the center line of the tunnel or rotate towards the direction far away from the center line of the tunnel, and the lifting mechanism is used for driving the umbrella support mechanism to move along the height direction of the tunnel; the railcar for with waiting the mounted position department in the steel lining subassembly transports the tunnel, and can remove along tunnel length direction, the installation rack is installed on the railcar.

So set up, assemble good steel inside lining subassembly in advance outside the tunnel earlier, then lay it on the installation rack through the gallows that rises to treat mounted position department in transporting steel inside lining subassembly to the tunnel through the railcar. In the installation process, the umbrella support mechanism and the lifting mechanism are adjusted, so that the steel lining half bodies on the two sides can be conveniently unfolded and moved in place until the steel lining half bodies are attached to a tunnel lining to be maintained and reinforced, and the steel lining is completely installed. Thus, under the time limit of the skylight, the installation of the whole ring and the whole section of the steel lining is completed to form a new complete structure system. Once the steel lining is installed, the normal operation of the railway can be recovered, and the driving safety is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a tunnel steel lining installation system provided by the present invention;

FIG. 2 is a schematic structural view of a steel liner assembly provided by the present invention;

FIG. 3 is a perspective view of a steel liner half provided by the present invention;

fig. 4 is a perspective view of an upper unit block provided in the present invention;

FIG. 5 is a perspective view of a middle block provided by the present invention;

FIG. 6 is a perspective view of a lower unit block provided by the present invention;

FIG. 7 is a perspective view of a steel lining segment provided by the present invention;

fig. 8 is a schematic view of the distribution of the locking bolts provided by the present invention;

fig. 9 is a schematic view of the positioning abutments distribution provided by the present invention;

FIG. 10 is a schematic view of the construction of the lifting frame provided by the present invention;

FIG. 11 is a partial front view of a lifting frame provided by the present invention;

FIG. 12 is a partial top plan view of a lifting frame provided in accordance with the present invention;

FIG. 13 is a front view of a mounting stand provided by the present invention;

FIG. 14 is a side view of a mounting stand provided by the present invention;

FIG. 15 is a schematic diagram showing the comparison between the rotation of the steel lining half body and the rotation of the umbrella support mechanism provided by the present invention;

FIG. 16 is a schematic diagram showing the steel liner half lowered by the lifting mechanism according to the present invention;

reference numerals:

1: a steel liner half; 2: lifting the hanger; 3: installing a rack;

4: a rail car; 5: positioning the abutment; 6: locking the anchor rod;

7: lining the tunnel; 8: a tunnel centerline; 9: a catenary;

10: the elevation of the rail surface;

11: an upper unit block; 12: a middle unit block; 13: a lower unit block;

21: a gusset plate; 22: connecting the longitudinal beams; 23: connecting the cross beam;

24: lifting lugs;

31: an umbrella support mechanism; 32: a lifting mechanism; 33: a gantry support;

311: jacking the cross beam; 312: a connecting beam; 313: a telescoping assembly;

314: a support beam;

321: a rack beam; 322: lifting jacks;

41: a guide rail;

51: a positioning groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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 invention.

The tunnel steel lining installation system of the present invention will be described with reference to fig. 1 to 16.

As shown in fig. 1, the embodiment of the utility model provides a tunnel steel lining mounting system, which comprises a steel lining assembly, a lifting frame 2, a mounting rack 3 and a rail car 4. Specifically, as shown in fig. 2, the steel lining assembly comprises a pair of steel lining halves 1 symmetrically disposed about a tunnel centerline 8 and matching the tunnel inner contour, the specific specification of which is determined according to the size of the tunnel inner contour. Generally, as shown in fig. 3, the steel lining halves 1 are arc-shaped and are made of several standard plate members, which can be machined from corrugated steel plate. Because the inner contour of the tunnel is a five-center circle and has three different radians, the steel lining half body 1 is formed by splicing standard corrugated steel plates with different radians. As shown in fig. 4 to 6, the upper unit block 11, the middle unit block 12, and the lower unit block 13 are sequentially included from top to bottom, thereby forming the left and right steel liner halves 1. When each steel lining half body 1 is spliced outside the tunnel, all the unit blocks can be directly welded and firmly connected. A pair of steel lining halfbodies 1 are detachably connected to form a whole ring steel lining unit, and particularly, the tops of the steel lining halfbodies are connected through high-strength bolts, so that the steel lining assembly is convenient to transport and install.

In addition, a locking hole is reserved in the pair of steel lining half bodies 1, a reserved condition is provided for locking the steel lining on an original tunnel concrete lining surface to be maintained and reinforced, and specifically, a locking anchor rod 6 is adopted for fixed connection. The locking anchor rod 6 is used for bearing the positive and negative wind pressure of the piston wind generated by the train running acting on the steel lining. And the shearing force generated between the steel lining and the tunnel lining 7 when the structure is deformed is borne by utilizing the shearing resistance of the locking anchor rod 6, so that a 'surrounding rock (soil) -original lining-corrugated plate interaction common stress system' is formed. Thus, the number, diameter and length of the required locking bolts 6, as well as the amount of grouting, are determined and arranged according to structural calculation and shear requirements. The locking anchor 6 is pre-installed in the anchor grouting hole in the tunnel inner wall with its end extending beyond the lining face. When the steel lining half body 1 is installed, the locking anchor rod 6 penetrates through the locking hole and is locked and fixed by the nut, so that the steel lining half body 1 is installed in a positioning mode. As shown in fig. 8, the locking bolts 6 are arranged in upper and lower rows, and the locking bolts 6 are evenly spaced along the length of the tunnel. The specific installation height and the installation distance are determined according to the actual design requirements, and the locking anchor rods 6 can be pre-installed at the radian change points of the bottom part and the middle upper part generally.

The lifting frame 2 is used for lifting the steel lining assembly and is detachably connected with the steel lining assembly, such as bolted connection and the like. The steel lining assembly is connected with a lifting device such as a gantry crane and the like so as to be lifted, and the lifting frame 2 is detached after the steel lining assembly is installed, so that the operation is convenient.

The installation rack 3 is used for installing the steel lining subassembly to waiting to maintain reinforced (rfd) former tunnel concrete lining on, and a pair of steel lining halfbody 1 symmetric distribution is in the both sides of installation rack 3. The mounting rack 3 comprises an umbrella support mechanism 31 and a lifting mechanism 32 connected with the umbrella support mechanism 31, and the lifting frame 2 is detachably connected with the umbrella support mechanism 31. The umbrella support mechanism 31 is used for driving the steel lining half bodies 1 to rotate towards the direction close to the central line 8 of the tunnel or rotate towards the direction far away from the central line 8 of the tunnel, so that the steel lining half bodies 1 on the left side and the right side are driven to fold inwards or expand outwards. The lifting mechanism 32 is used for driving the umbrella support mechanism 31 to move along the height direction of the tunnel, so that the steel lining half body 1 is driven to move up and down, and the disassembly, assembly and transportation are facilitated.

The mounting table 3 is mounted on the table of a rail car 4, and the rail car 4 together with the mounting table 3 and the steel lining assembly is transported to the tunnel at the position to be mounted and can move along the length direction of the tunnel. The rail car 4 can adopt the existing common rail car structure, can run on a rail, and has a braking function. It should be noted that, regarding the placement position of the tunnel steel lining installation system shown in fig. 1, the vertical direction in the drawing is the height direction of the tunnel, the left-right direction is the width direction of the tunnel, and the direction perpendicular to the paper surface is the length direction of the tunnel.

So set up, assemble good steel inside lining subassembly in advance according to the profile in the tunnel outside the tunnel earlier, accomplished most work load, assemble the steel inside lining in traditional tunnel and work shifts to go on outside the tunnel in advance to reduce the work load in the tunnel to skylight restrictive condition allowed range, thoroughly solved the space-time conflict between installation engineering and the railway operation in the tunnel. Then the whole ring and the whole section of steel lining assembly which are spliced outside the tunnel are placed on an installation rack 3 through a lifting frame 2, and the steel lining assembly is transported to a position to be installed in the tunnel through a rail car 4 after being folded and contracted. In the installation process, the umbrella support mechanism 31 and the lifting mechanism 32 are adjusted, so that the steel lining half bodies 1 on the two sides can be conveniently unfolded and moved in place until the steel lining half bodies are attached to the tunnel lining 7 to be maintained and modified, and the steel lining is installed on the original concrete lining surface. Thus, under the time limit of the skylight, the installation of the whole ring and the whole section of the steel lining is completed to form a new complete structure system. Once the steel lining is installed, the normal operation of the railway can be recovered, and the driving safety is guaranteed.

In the embodiment of the utility model, at least two steel lining assemblies are arranged side by side along the length direction of the tunnel, and two adjacent steel lining assemblies are fixedly connected. As shown in fig. 7, a plurality of steel lining components are stacked, and the joints between two adjacent steel lining components are welded, that is, the steel lining half bodies 1 on the same side are welded and fixed, so that steel lining segments are formed, and the construction efficiency is improved. For convenient operation, the utility model can be assembled in prone position, namely horizontally arranged on the ground.

As shown in fig. 10 to 12, the lifting frame 2 includes a pair of gusset plates 21, a pair of connecting longitudinal beams 22, a pair of connecting cross beams 23, and at least two lifting lugs 24. The connecting longitudinal beams 22 and the connecting transverse beams 23 can be machined by standard I-steel. Specifically, a pair of gusset plates 21 are symmetrically disposed about the tunnel centerline 8 and cooperate with the steel liner halves 1 in an arcuate shape at their ends connected to the upper unit blocks 11. A pair of gusset plates 21 are removably attached, e.g., bolted, to a pair of steel liner halves 1 for easy removal. The pair of connecting longitudinal beams 22 are arranged at intervals in the tunnel width direction, and as shown in fig. 10, one side of each connecting longitudinal beam 22 is connected with the gusset plate 21, and the other side is detachably connected with the umbrella bracing mechanism 31. As shown in fig. 12, a pair of connecting cross members 23 are detachably connected between a pair of connecting longitudinal members 22 and are spaced apart in the lengthwise direction of the tunnel, thereby forming a stable frame structure for lifting the steel lining assembly. Furthermore, the connecting cross-members 23 are arranged detachably so that they can be removed during transport into the tunnel, which facilitates the adjustment of the steel lining halves 1. As shown in fig. 11, lifting lugs 24 are mounted on the connecting cross member 23 for connecting a lifting device, thereby facilitating lifting of the steel lining assembly.

Referring to fig. 13 to 16, the canopy mechanism 31 includes a jacking cross member 311, a pair of connecting beams 312, and a pair of telescopic assemblies 313. As shown in fig. 13, the jacking beams 311 are mounted on the elevating mechanism 32, and a pair of connecting beams 312 are symmetrically arranged about the tunnel center line 8 and are hinged. While the connecting longitudinal beam 22 is connected with the connecting beam 312 to connect the lifting frame 2 with the canopy stay mechanism 31. The pair of telescopic assemblies 313 are symmetrically arranged about the central line 8 of the tunnel and do telescopic movement along the height direction of the tunnel, and the telescopic assemblies 313 can adopt bidirectional hydraulic oil cylinders and the like. One end of the telescopic assembly 313 is hinged with the connecting beam 312, and the other end is hinged with the jacking cross beam 311.

Further, the umbrella support mechanism 31 further comprises a pair of support beams 314, one end of each support beam 314 is hinged to one end of the telescopic assembly 313 close to the lifting cross beam 311, and the other end is hinged to one end of the connecting beam 312 far from the telescopic assembly 313.

By such arrangement, the connecting beam 312, the telescopic assembly 313 and the supporting beam 314 on the two sides form two mutually hinged and stable triangular structures, and the telescopic assembly 313 is controlled to do telescopic motion, so that the steel lining half bodies 1 on the two sides are driven to rotate. As shown in fig. 15, the right telescopic member 313 is retracted to bring the right steel inner lining half body 1 inwardly. In a similar way, the left side telescopic component 313 contracts to drive the left side steel lining half body 1 to fold inwards. Thereby fold two sides steel inside lining halfbodies 1 and draw in, make steel inside lining halfbody 1 top form the opening to avoid taking place to interfere with contact net 9 on the way transporting into the tunnel. Then, when the steel lining half body 1 is connected with the tunnel lining 7 after entering the tunnel, the right side expansion assembly 313 extends out to drive the right side steel lining half body 1 to be expanded outwards. The left side telescopic component 313 extends out to drive the left side steel lining half body 1 to be outwards expanded. Before adjusting the umbrella support mechanism 31, the steel lining halves 1 on both sides are detached, and the connecting cross beam 23 on the hanger 2 is detached.

In the embodiment of the present invention, the lifting mechanism 32 includes a rack beam 321 and a lifting jack 322. As shown in fig. 13, the gantry beam 321 is mounted on the rail car 4, and the lifting jack 322 is mounted on the gantry beam 321. The lifting jack 322 is used for driving the umbrella support mechanism 31 to move along the height direction of the tunnel, so as to drive the steel lining half bodies 1 on the two sides to do lifting movement. Specifically, two lifting jacks 322 are symmetrically arranged on two sides of the central line 8 of the tunnel, so that the steel lining half bodies 1 on two sides can be supported and driven to move up and down more stably and reliably, the steel lining is adjusted to a height which does not conflict with the tunnel structure before entering the tunnel, and the steel lining can reach a designed elevation during installation. As shown in fig. 16 (for comparison, only the right steel liner half 1 is shown in a changed position), the right lifting jack 322 is retracted to lower the right steel liner half 1. In the same way, the left lifting jack 322 is contracted to drive the left steel lining half body 1 to descend. Thereby make whole focus move down, be convenient for stabilize the transportation, and can avoid colliding with contact net 9 in the tunnel when getting into the tunnel. Correspondingly, the right lifting jack 322 is lifted to drive the right steel lining half body 1 to ascend. And (3) jacking the left lifting jack 322 to drive the left steel lining half body 1 to ascend, so that the steel lining half body 1 and the tunnel lining 7 can be fixedly connected. In addition, as shown in fig. 14, the umbrella support mechanism 31 and the lifting mechanism 32 are generally provided in two sets, two in each set, along the length direction of the tunnel, so as to reliably move the steel lining half 1.

Further, the mounting rack 3 further comprises a portal bracket 33 slidably connected with the rack beam 321, the rack beam 321 moves on the portal bracket 33 along the width direction of the tunnel, and the portal bracket 33 is connected with the rail car 4. Specifically, the rack beam 321 can be matched with a slide rail through a slide block or matched with a guide rail through wheels, so that the relative motion between the rack beam 321 and the door-shaped bracket 33 is realized, and meanwhile, a limiter can be arranged to ensure that the relative motion does not occur after the rack beam is moved in place. Fine adjustments are made by moving the gantry beam 321 left and right to align the centerline of the umbrella support mechanism 31 with the tunnel centerline 8, as shown in fig. 13, allowing for faster and more accurate installation of the steel lining assembly.

Further, the tunnel steel lining mounting system further comprises a guide rail 41 arranged on the rail car 4, the guide rail 41 is arranged along the length direction of the tunnel, and the door-shaped bracket 33 is matched with the guide rail 41 and slides along the guide rail 41. Specifically, the bottom of the portal frame 33 is provided with wheels with a braking function, which can slide on a guide rail 41 mounted on the rail car 4. As shown in fig. 14, when the steel lining assembly is carried to the position to be installed, the positioning of the installation stand 3 can be achieved by fine adjustment by moving the portal bracket 33 back and forth so as to more precisely align the position to be installed.

In an embodiment of the utility model, the tunnel steel lining mounting system further comprises a set of positioning abutments 5 for calibrating the steel lining assembly. One set of positioning abutments 5 fits into the tunnel inner profile, as shown in fig. 9, and two positioning abutments 5 are symmetrically arranged about the tunnel centre line 8. The positioning abutments 5 are formed by casting concrete, and the parts of the positioning abutments are positioned below the rail surface elevation 10, namely, the positioning abutments are buried underground. As shown in fig. 9, the top surface of the positioning abutment 5 is provided with a positioning groove 51 into which the bottom of the steel lining assembly is inserted, and the positioning groove 51 may be a semicircular groove so that the steel lining assembly is hung onto the positioning abutment 5 and inserted into the positioning groove 51, thereby more accurately positioning the steel lining assembly. For the steel lining assembly to be placed more stably and reliably, a plurality of groups of positioning abutments 5 can be arranged along the length direction of the tunnel.

In the embodiment of the utility model, the tunnel steel lining mounting system further comprises adjustable supporting feet arranged on the rail car 4. The adjustable supporting legs can adopt current common supporting leg sign indicating number for the height of adjustment railcar 4 makes railcar 4 break away from the track at installation rack 3 during operation, lets installation work load of installation rack 3 directly pass to ground, ensures the job stabilization nature of installation rack 3, still can adjust installation rack 3 to horizontal gesture, is convenient for install the steel inside lining subassembly better. The adjustable supporting legs are a plurality of and are evenly arranged around the rail car 4. Like this when railcar 4 traveles to the predetermined place, put down adjustable supporting legs, make railcar 4's wheel break away from the rail to directly transmit loads such as installation rack 3 and steel lining subassembly to the ground, improved the bulk rigidity of system, guarantee its work overall stability, improve steel lining assembly precision. When the vehicle needs to be driven away, the adjustable supporting legs are lifted, so that the wheels are in contact with the rails.

In summary, the utility model provides a tunnel steel lining installation system, which comprises a steel lining assembly, a lifting frame 2, an installation rack 3, a rail car 4 and the like. The steel lining can be assembled outside the railway tunnel in advance, then the steel lining is folded and descended and then the steel lining is transported to the position to be installed in the tunnel, the integral installation of the steel lining is completed quickly in the tunnel by utilizing the skylight time, the space-time conflict between the installation engineering and the railway operation in the tunnel is thoroughly solved, the precedent for implementing the steel lining installation engineering under the operation condition is opened up, and a solution is provided for the conflict between the steel lining installation engineering and the railway normal operation in the tunnel. The specific working process is as follows:

s1: the steel lining components are assembled outside the tunnel, each steel lining component comprises a pair of steel lining half bodies 1, and the steel lining half bodies 1 are detachably connected through bolts to form a whole ring steel lining unit.

S2: and sequentially connecting a plurality of whole-ring steel lining units in a stacking manner to form steel lining segments, wherein the steel lining half bodies 1 on the same side of two adjacent steel lining units are connected by welding, and simultaneously completing the assembly of the plurality of steel lining segments. Therefore, most of assembly work is finished outside the tunnel in advance, and subsequent construction is accelerated in the tunnel. Furthermore, the specific number of steel lining units contained in each steel lining segment is determined by the actual situation.

S3: the gusset plate 21 of the lifting frame 2 is connected to the steel lining segment and the lifting means is connected to the lifting frame 2. The steel lining segment is hoisted to the positioning abutment 5 through the hoisting device, so that the lower end of the steel lining segment falls into the positioning groove 51 on the top surface of the positioning abutment 5. Therefore, the tunnel is pre-installed outside the tunnel, and the assembling precision is calibrated.

S4: the rail car 4 drives in and stops below the steel lining segment on the positioning abutment 5, so that the central line of the rail car 4 is superposed with the central line of the steel lining. And then the adjustable supporting legs are put down to separate the wheel rails, so that the whole load acts on the ground, and the mounting rack 3 is adjusted to be in a horizontal posture.

S5: the lifting mechanism 32 and the umbrella support mechanism 31 are finely adjusted according to the height position of the steel lining segment to connect the umbrella support mechanism 31 with the lifting frame 2.

S6: and (3) dismantling the connecting bolts at the tops of the steel lining half bodies 1 at the two sides, dismantling the steel lining half bodies 1 at the two sides, and dismantling the connecting cross beam 23 on the lifting frame 2.

S7: the lifting mechanism 32 is adjusted and the lifting jacks 322 are operated so that the steel lining segments are raised to disengage the positioning abutments 5. And then adjusting the umbrella support mechanism 31, and contracting the two-way hydraulic oil cylinders at the two sides, so that the steel lining half bodies 1 at the two sides rotate for a certain angle around the rotation center of the mechanism to the direction close to the central line 8 of the tunnel, and an opening is formed at the top of the steel lining half bodies. The lifting mechanism 32 is again adjusted to retract the lifting jacks 322 so that the centrally folded steel liner section is lowered into position. The size and descending height of the top opening are related to the position of a contact net 9 in the tunnel, so that the contact net 9 is avoided, and the steel lining segment after being folded and descended is prevented from colliding with the tunnel wall or the contact net in the transportation process. Then the adjustable supporting feet are retracted to make the wheel rail contact.

S8: the rail car 4 transports the folded, lowered steel lining segments to the place to be installed in the tunnel. Then the adjustable supporting feet are put down to separate the wheel rails, the whole load acts on the foundation, and the mounting rack 3 is adjusted to the horizontal posture. And the mounting rack 3 is moved back and forth along the length direction of the tunnel for fine adjustment, the rack cross beam 321 is moved left and right along the width direction of the tunnel, and the umbrella support fine adjustment mechanism 31 and the lifting mechanism 32 are adjusted, so that the center of the umbrella support fine adjustment mechanism is accurately aligned with the center line 8 of the tunnel, and positioning and centering are realized.

S9: the lifting mechanism 32 is adjusted according to the height position of the tunnel lining 7, and the lifting jack 322 is operated to lift the steel lining halves 1 on both sides to a proper position. And then adjusting the umbrella support mechanism 31, extending the two-way hydraulic oil cylinders at the two sides, enabling the steel lining half bodies 1 at the two sides which are lifted to rotate around the rotation center of the mechanism to the direction far away from the central line 8 of the tunnel, and closing the top opening until the steel lining half bodies are attached to the tunnel lining 7 to be maintained and reinforced.

S10: at the moment, a locking anchor rod 6 preassembled in the tunnel penetrates through a locking hole in the steel lining half body 1, a washer is installed at the end part of the locking anchor rod 6, a nut is screwed, and the steel lining segment is locked on the original tunnel concrete lining. Then the tops of the steel lining half bodies 1 on the two sides are connected by bolts.

S11: the gusset plate 21 of the lifting frame 2 is detached from the steel lining segment, and then the lifting mechanism 32 is adjusted to retract the lifting jack 322 to disengage the steel lining segment from the mounting block 3. And the adjustable supporting feet are folded to make the wheel rails contact.

S12: the rail car 4 together with the mounting table 3 is driven out of the tunnel, and the mounting of one steel lining segment is completed so far, so that the mounting of the next steel lining segment is ready to be carried out.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A tunnel steel lining installation system, comprising:

the steel lining assembly comprises a pair of steel lining half bodies which are symmetrically arranged about a central line of the tunnel and matched with the inner contour of the tunnel, the pair of steel lining half bodies are detachably connected, and locking holes for connecting a tunnel lining to be repaired and reinforced are reserved in the pair of steel lining half bodies;

the lifting frame is used for lifting the steel lining assembly and is detachably connected with the steel lining assembly;

the steel lining assembly comprises a steel lining assembly, a mounting rack and a lifting mechanism, wherein the steel lining assembly is used for mounting the steel lining assembly on a tunnel lining to be maintained and reinforced, the pair of steel lining half bodies are positioned on two sides of the mounting rack, the mounting rack comprises a canopy supporting mechanism and the lifting mechanism connected with the canopy supporting mechanism, the lifting frame is detachably connected with the canopy supporting mechanism, the canopy supporting mechanism is used for driving the steel lining half bodies to be folded towards the direction close to the center line of the tunnel or to be expanded away from the center line of the tunnel, and the lifting mechanism is used for driving the canopy supporting mechanism to move along the height direction of the tunnel;

the rail car is used for transporting the steel lining assembly to a position to be installed in the tunnel, the steel lining assembly can move along the length direction of the tunnel, and the installation rack is installed on the rail car.

2. The tunnel steel lining mounting system of claim 1, wherein the number of the steel lining assemblies is at least two, and the steel lining assemblies are arranged side by side along the length direction of the tunnel, and every two adjacent steel lining assemblies are fixedly connected.

3. The tunnel steel liner mounting system of claim 1, wherein the lifting frame comprises:

the pair of node plates are symmetrically arranged around the center line of the tunnel and matched with the steel lining half bodies, and the pair of node plates are detachably connected with the pair of steel lining half bodies;

the pair of connecting longitudinal beams are arranged at intervals along the width direction of the tunnel, one side of each connecting longitudinal beam is connected with the node plate, and the other side of each connecting longitudinal beam is detachably connected with the umbrella support mechanism;

a pair of connecting beams detachably connected between the pair of connecting longitudinal beams and arranged at intervals along the length direction of the tunnel,

and the at least two lifting lugs are used for connecting the lifting device.

4. The tunnel steel lining mounting system of claim 3, wherein the umbrella support mechanism comprises:

the jacking cross beam is arranged on the lifting mechanism;

the pair of connecting beams are symmetrically arranged around the center line of the tunnel and are hinged with each other, and the connecting longitudinal beams are connected with the connecting beams;

and the pair of telescopic assemblies are symmetrically arranged about the center line of the tunnel and do telescopic motion along the height direction of the tunnel, one end of each telescopic assembly is hinged with the connecting beam, and the other end of each telescopic assembly is hinged with the jacking cross beam.

5. The tunnel steel lining mounting system of claim 4, wherein the canopy stay mechanism further comprises a pair of support beams, one end of each support beam being hinged to the telescoping assembly near the end of the jacking cross beam and the other end being hinged to the connecting beam far from the telescoping assembly.

6. The tunnel steel liner mounting system of claim 1, wherein the lift mechanism comprises:

the rack beam is arranged on the rail car;

and the lifting jack is arranged on the rack cross beam and used for driving the umbrella support mechanism to move along the height direction of the tunnel.

7. The tunnel steel liner mounting system of claim 6, wherein the mounting gantry further comprises a gantry slidably connected to the gantry beam, the gantry beam moving over the gantry in a tunnel width direction, the gantry beam being connected to the rail car.

8. The tunnel steel lining mounting system of claim 7, further comprising a rail disposed on the rail car, the rail disposed along a length of the tunnel, the door bracket cooperating with and sliding along the rail.

9. The tunnel steel lining mounting system of claim 1, further comprising a set of positioning abutments for aligning the steel lining assembly, the set of positioning abutments cooperating with an inner profile of the tunnel and being provided with positioning grooves into which a bottom of the steel lining assembly is inserted.

10. The tunnel steel liner mounting system of claim 1, further comprising adjustable support feet disposed on the rail car for adjusting the height of the rail car to disengage the rail car from a rail and adjust the mounting gantry to a horizontal position.

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