CN212272236U - Self-propelled work platform for large-span tunnel - Google Patents

Abstract

The utility model discloses a large-span tunnel self-propelled operation platform, which comprises a coiling buckle support, wherein a chassis is arranged below the coiling buckle support, the chassis is divided into a left chassis and a right chassis, the left chassis and the right chassis are disconnected at a door passing hole, a middle temporary lap joint frame is arranged below the door passing hole, and the left chassis and the right chassis are lapped into an integral rigid frame when the tunnel multifunctional operation platform moves; a walking driving system is arranged below the chassis, the adjustable base can penetrate through the chassis and extend to the ground for supporting, and when the multifunctional tunnel operation platform moves, the adjustable base retracts and then is separated from the ground; the cantilever crane, the winch and the roller are installed on the operation platform at the top of the plate buckling support, the left winch is combined with the roller to be used for lifting the right lining reinforcing steel bars, and the right winch is combined with the roller to be used for lifting the left lining reinforcing steel bars. The self-moving and recycling can be realized, the use process is stable and reliable, and the construction efficiency is greatly improved.

Description

Self-propelled work platform for large-span tunnel

Technical Field

The utility model belongs to the technical field of the engineering construction, concretely relates to self-propelled tunnel multifunctional operation platform suitable for super large span tunnel to and utilize this self-propelled tunnel multifunctional operation platform to carry out lining cutting waterproof board and steel bar installation's construction method.

Background

The conventional tunnel reinforcing steel bar and waterproof plate operation rack is processed by profile steel, so that the tunnel reinforcing steel bar and waterproof plate operation rack is high in cost, low in installation speed, free of power devices, capable of walking only by matching with other machines, and large in labor intensity due to the fact that reinforcing steel bars are dragged upwards from the ground manually. If the operation rack for the extra-large section tunnel reinforcing steel bar waterproof plate is used in a conventional method, the operation rack is time-consuming, labor-consuming, high in cost and inconvenient to walk.

The span of the tunnel needing lining is not more than 40 meters, and the span of the common road and railway tunnel is more than ten meters. The super-large-span tunnel reinforcing steel bar waterproof plate operation platform is generally constructed by full-space supports or Bailey beam supports, each support cannot move after being erected and poured, and only can be erected again after being detached and shifted, so that the time and labor are wasted, and the processing and manufacturing cost is high; especially, the quantity of platforms required to be put into a tunnel with a tight construction period is large, the cost is very high, and the assembling difficulty in the tunnel is large.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a lining cutting platform that is fit for super large section tunnel lining cutting reinforcing bar and waterproof board construction can realize from moving and reuse, and is firm reliable in the use, improves the efficiency of construction greatly.

Therefore, the utility model discloses the technical scheme who adopts does: a large-span tunnel self-propelled operation platform comprises a disc buckle support, wherein a main body of the disc buckle support is formed by lapping a vertical rod, a horizontal rod and an inclined rod, the disc buckle support is provided with an adjustable base and a vehicle door passing hole, a grid-shaped chassis formed by welding profile steel is arranged below the disc buckle support, the chassis is divided into a left chassis and a right chassis, the left chassis and the right chassis are disconnected at the position of the vehicle door passing hole, a middle temporary lapping frame is arranged below the vehicle door passing hole, and the left chassis and the right chassis are lapped into an integral rigid frame when the tunnel multifunctional operation platform moves; a walking driving system is arranged below the chassis and comprises a driving wheel, a supporting roller and a driving motor, the disc buckle support is fixed on the chassis through a bottommost horizontal rod, the adjustable base can penetrate through the chassis and extend to the ground for supporting, and when the tunnel multifunctional operation platform moves, the adjustable base retracts and then is separated from the ground;

the utility model discloses a lining reinforcing bar, including dish knot support, cantilever crane, two hoists, tunnel extending direction, a plurality of axes, the operation platform of taking the railing is provided with on dish knot support top, install cantilever crane, hoist engine and cylinder on the operation platform, the cantilever crane is arranged between two parties about, and two hoist engines set up respectively in the left and right sides of cantilever crane, and a plurality of axes are installed on the step of operation platform with the unanimous cylinder of tunnel extending direction, and left hoist engine combines the cylinder to be used for promoting the lining cutting reinforcing bar on right side, and the hoist engine on right.

Preferably as above-mentioned scheme, the pole setting all around of dish knot support surpasss the horizon bar at the topmost 1.2m at least, and it is equipped with the plank as the operation platform board to lay on the horizon bar at the topmost, and surpasss partly and install the horizontal pole as the railing, installs the baseboard in the bottom of railing.

Preferably, the left chassis and the right chassis are respectively formed by welding criss-cross section steel, and the middle temporary lap joint frame is composed of a section steel rectangular frame and section steel bars arranged in the section steel rectangular frame at intervals in the front and back.

Preferably, the driving wheel is a rubber wheel, the supporting roller is a rigid wheel, the diameter of the rubber wheel is larger than that of the rigid wheel, the number of the rigid wheels is larger than that of the rubber wheels, the driving motor is provided with a speed reducer, and the rubber wheel is driven by a chain.

More preferably, the left and right drive wheels are driven by different drive motors.

Preferably, each driving wheel is provided with a wheel axle pressing mechanism, the wheel axle pressing mechanism adopts a cylindrical helical compression spring, the upper end of the cylindrical helical compression spring is fixed on the coiling buckle support, and the lower end of the cylindrical helical compression spring is pressed on the wheel axle of the corresponding driving wheel.

The utility model has the advantages that:

(1) the plate buckle support for the ultra-large span tunnel has very large self weight, a chassis welded by profile steel is additionally arranged below the plate buckle support, and a driving wheel, a supporting roller and an adjustable base capable of penetrating through the chassis are jointly used for supporting in the lining installation process, so that the strength is high and the bearing capacity is strong;

(2) the chassis is in a grid shape formed by welding profile steel and serves as a passage for the extension and the shortening of the adjustable base, so that the adjustable base can conveniently retract and then separate from the ground to move and walk, and the adjustable base can extend out of and support on the ground after the adjustable base is in place;

(3) the chassis adopts a left-right split structure disconnected from the door passing hole, so that the height of the chassis is increased conveniently, and sufficient space is reserved for additionally arranging a support roller and a driving wheel; on the basis, the middle temporary lapping frame is arranged and can be placed into the vehicle passing door hole to be lapped with the left chassis and the right chassis into an integral rigid frame by combining bolts, so that the integral rigidity of the chassis is not influenced, and the stability of the disc buckle support in the moving process is ensured;

(4) the two winches and the rollers are arranged, the left winch is combined with the rollers to lift the right lining reinforcing steel bars, and the right winch is combined with the rollers to lift the left lining reinforcing steel bars, so that the lining reinforcing steel bars can be conveniently lifted to a proper height, the lifting difficulty is reduced, and the manual input is reduced;

(5) realize the promotion of lining cutting reinforcing bar through hoist engine and cylinder, realize the hoist and mount of waterproof board, geotechnological cloth through the cantilever crane, can also combine little material from top to bottom of the staircase, the function is complete.

Drawings

Fig. 1 is a schematic structural diagram of a large-span tunnel self-propelled working platform.

Fig. 2 is a top view of the chassis assembled with the intermediate temporary lap joint frame.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a partial enlarged view of the work platform in position.

Fig. 5 is a schematic view of the installation of the axle hold down mechanism.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

referring to fig. 1-5, a large-span tunnel self-propelled working platform mainly comprises a plate buckle support 1, an adjustable base 2, a passing vehicle door hole 3, a chassis 4, a middle temporary lap joint frame 5, a driving wheel 6, a supporting roller 7, a driving motor 8, a railing 9, a working platform 10, a cantilever crane 11, a winch 12, a roller 13, a skirting board 14 and a wheel shaft pressing mechanism 15.

The main body of the plate buckle support 1 is formed by lapping a vertical rod, a horizontal rod and an inclined rod, the transverse and vertical stress is better, the plate buckle support is firm and firm, the safety of workers is guaranteed, and the plate buckle support is simple to assemble and disassemble and easy to learn. The plate buckle is generally leased, the consumption of the section steel is small, outsourcing processing is not needed generally, the manufacturing cost is low, the processing speed is high, and the efficiency is high.

The plate buckle support 1 is provided with an adjustable base 2 and a vehicle passing door hole 3. A grid-shaped chassis 4 formed by welding section steel is arranged below the disc buckle support 1. The chassis 4 is divided into a left chassis 4a and a right chassis 4b, and the left chassis 4a is disconnected from the right chassis 4b at the passing door hole 3 position. The lower part of the passing door hole 3 is provided with a middle temporary lapping frame 5 which is used for lapping the left chassis 4a and the right chassis 4b into an integral rigid frame when the multifunctional tunnel operation platform moves. Preferably, the left chassis 4a and the right chassis 4b are respectively formed by welding criss-cross section steels, and the intermediate temporary lap joint frame 5 is composed of a section steel rectangular frame and section steel bars arranged in the section steel rectangular frame at intervals in the front-back direction.

A walking driving system is arranged below the chassis 4, so that the walking is flexible, simple and convenient, and the walking is convenient and rapid to advance and retreat. The walking driving system comprises a driving wheel 6, a supporting roller 7, a driving motor 8 and an electric control cabinet 16. The disc buckle support 1 is fixed on the chassis 4 through the bottommost horizontal rod, and the chassis is used for supporting the bottommost horizontal rod of the disc buckle support so as to bear the weight of the whole disc buckle support. The adjustable base 2 can penetrate through the chassis 4 to extend to the ground for supporting, and when the multifunctional tunnel operation platform moves, the adjustable base 2 retracts to be separated from the ground.

The top of the plate buckle support 1 is provided with a working platform 10 with a railing 9. The working platform 10 is provided with a cantilever crane 11, a winch 12 and a roller 13, the cantilever crane 11 is arranged in the middle left and right, and preferably, the two cantilever cranes 11 are arranged in tandem at intervals. Two winches 12 are respectively arranged at the left and right sides of the cantilever crane 11, and a plurality of rollers 13 with the axes consistent with the extending direction of the tunnel are arranged on the steps of the working platform 10. The left winch 12 is combined with the drum 13 to lift the right lining reinforcing steel bars, and the right winch 12 is combined with the drum 13 to lift the left lining reinforcing steel bars. A plurality of rollers are arranged and used for changing sliding friction between the lining reinforcing steel bars and the top platform into rolling friction when the lining reinforcing steel bars are pulled up, so that friction force is reduced.

Preferably, the vertical rods at the outermost side of the periphery of the disc buckle support 1 exceed the horizontal rods at the topmost part by at least 1.2m, and the distance between the top of the disc buckle support and the primary support surface 18 of the tunnel is about 2 m. The horizontal rod at the top is paved with a wood plate as a working platform plate, the exceeding part of the vertical rod is provided with a cross rod as a railing 9, and the bottom of the railing 9 is provided with a skirting board 14 to ensure the safety of operators. The height of the top cross bar is not less than 1.2m, and the bottom of the railing is provided with a skirting board which is not less than 20cm high.

The staircase 17 is arranged in the coiling buckle bracket 1 and is used for lifting workers and small materials.

In addition, the driving wheel 6 is preferably a rubber wheel, the supporting roller 7 is preferably a rigid wheel, the diameter of the rubber wheel is larger than that of the rigid wheel, the number of the rigid wheels is larger than that of the rubber wheel, and the driving motor 8 is provided with a speed reducer and drives the rubber wheel through a chain. The driving wheels and the supporting rollers are used for supporting together, so that the stability of the large platform in the using process is ensured. The supporting rollers 7 are provided with bearings and used for longitudinally walking.

The driving wheels 6 on the left and right sides are preferably driven by different driving motors 8 for facilitating the adjustment of the offset.

Each driving wheel 6 is provided with a wheel shaft pressing mechanism 15, the wheel shaft pressing mechanism 15 adopts a cylindrical spiral compression spring, the upper end of the cylindrical spiral compression spring is fixed on the coiling buckle support 1, and the lower end of the cylindrical spiral compression spring is pressed on the wheel shaft corresponding to the driving wheel 6. The wheel shaft pressing mechanism is additionally arranged, the shaft of the driving wheel 6 is pressed from the upper part, and when the ground is uneven, the tire can be always kept in contact with the ground and cannot skid.

A tunnel steel bar waterproof board construction method using the large-span tunnel self-propelled operation platform comprises the following steps:

step A, platform walking and positioning;

the adjustable base 2 of the disc buckle bracket 1 extends out of the screw rod to be shortened and is separated from the ground by more than 15cm, and then the adjustable base 2 is fixed and cannot automatically fall to the ground; placing the middle temporary lapping frame 5 into the door passing hole 3 and lapping the left chassis 4a and the right chassis 4b into an integral rigid frame by combining bolts; then, enabling the tunnel multifunctional operation platform to walk to the position where a lining waterproof plate, a steel bar, geotextile and an embedded part are required to be installed along the extending direction of the tunnel through a walking driving system;

after the vehicle travels in place, the middle temporary lap joint frame 5 in the vehicle passing door hole 3 is removed, so that the vehicle passing door hole is kept smooth. Putting down all the adjustable bases 2 of the disc buckle support 1 and tightening the adjustable bases to enable the adjustable bases 2 to be supported on the ground firmly.

B, installing a waterproof plate and lining reinforcing steel bars;

the waterproof board and the geotextile are hoisted by using the cantilever crane 11 on the operation platform 10, so that the labor intensity of manual upward dragging is reduced; the connected lining reinforcing steel bars on the ground are lifted in place from the right side by the aid of the left winch 12 and the roller 13, the connected lining reinforcing steel bars on the ground are lifted in place from the left side by the aid of the right winch 12 and the roller 13, the lining reinforcing steel bars are lifted to a designed elevation by workers after being lifted in place and then are bound and fixed, and labor intensity of manually dragging the reinforcing steel bars is greatly reduced.

And C, repeating the step A and the step B, and performing cycle construction according to the working procedure.

In the step A, when the left walking distance and the right walking distance are inconsistent and offset occurs, the driving motor on the left side or the right side is independently controlled to finely adjust the direction, so that the multifunctional tunnel operation platform always walks along the central axis of the tunnel.

Claims (3)

1. The utility model provides a large-span tunnel self-propelled work platform, detains support (1) including the dish, the main part that support (1) were detained to the dish is formed by pole setting, horizon bar, down tube overlap joint, and support (1) are detained to the dish has adjustable base (2) and crosses car door opening (3), its characterized in that: a latticed chassis (4) formed by welding profile steels is arranged below the disc buckle support (1), the chassis (4) is divided into a left chassis (4a) and a right chassis (4b), the left chassis (4a) and the right chassis (4b) are disconnected at the position of a vehicle passing door hole (3), a middle temporary lap joint frame (5) is arranged below the vehicle passing door hole (3) and used for lapping the left chassis (4a) and the right chassis (4b) into an integral rigid frame when the tunnel multifunctional operation platform moves; a walking driving system is arranged below the chassis (4), the walking driving system comprises a driving wheel (6), a supporting roller (7) and a driving motor (8), the disc buckle support (1) is fixed on the chassis (4) through a bottommost horizontal rod, the adjustable base (2) can penetrate through the chassis (4) to extend to the ground for supporting, and when the multifunctional tunnel operation platform moves, the adjustable base (2) retracts to be separated from the ground;

the top of the plate buckle support (1) is provided with an operation platform (10) with a railing (9), the operation platform (10) is provided with a cantilever crane (11), a winch (12) and a roller (13), the cantilever crane (11) is arranged in the left and right middle, the two winches (12) are respectively arranged on the left side and the right side of the cantilever crane (11), the rollers (13) with the axes consistent with the extending direction of the tunnel are arranged on the steps of the operation platform (10), the winch (12) on the left side is combined with the roller (13) to lift the lining reinforcing steel bars on the right side, and the winch (12) on the right side is combined with the roller (13) to lift the lining reinforcing steel bars on the left side;

vertical rods on the periphery of the plate buckle support (1) exceed the topmost horizontal rod by at least 1.2m, a wood plate is laid on the topmost horizontal rod to serve as an operation platform plate, a cross rod serving as a railing (9) is installed on the exceeding part, and a skirting board (14) is installed at the bottom of the railing (9);

the left side chassis (4a) and the right side chassis (4b) are respectively formed by welding criss-cross section steel, and the middle temporary lap joint frame (5) is composed of a section steel rectangular frame and section steel bars arranged in the section steel rectangular frame at the front and back intervals.

2. The large-span tunnel self-propelled work platform of claim 1, characterized in that: the driving wheel (6) adopts rubber wheels, the supporting roller (7) adopts rigid wheels, the diameter of the rubber wheels is larger than that of the rigid wheels, the number of the rigid wheels is larger than that of the rubber wheels, the driving motor (8) is provided with a speed reducer and drives the rubber wheels through chains, and the driving wheels (6) on the left side and the right side are driven by different driving motors (8).

3. The large-span tunnel self-propelled work platform of claim 1, characterized in that: each driving wheel (6) is provided with a wheel axle pressing mechanism (15), the wheel axle pressing mechanism (15) adopts a cylindrical spiral compression spring, the upper end of the cylindrical spiral compression spring is fixed on the coiling buckle support (1), and the lower end of the cylindrical spiral compression spring is pressed on a wheel axle of the corresponding driving wheel (6).

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