Tunnel construction work platform and method of installing same

Abstract

This invention provides a tunnel construction work platform and its installation method. The work platform includes: an arch frame, which is an arch shape adapted to the inner wall of the tunnel; two traveling mechanisms, each located at one of the two arch feet of the arch frame, to drive the arch frame to travel along the tunnel; four working wire ropes, with four working wire ropes corresponding to the arch top of the arch frame; and a work platform, the main body of which includes interconnected horizontal and vertical beams, and four climbing devices corresponding to the working wire ropes are provided on the outer periphery of the work platform. This invention has a simple structure and is easy to manufacture, meeting both the needs of tunnel face construction and traffic requirements. The work platform is raised and lowered on the working wire ropes via climbing devices, making the lifting operation convenient and simple. The arch frame is adapted to the inner wall of the tunnel, minimizing the space occupied inside the tunnel.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction technology, specifically relating to a tunnel construction operation platform and its installation method. Background Technology

[0002] Conventional tunnel working platforms are multi-layered frame structures with welded extension platforms on the outside. Because tunnel operations must also maintain traffic flow beneath the platform, it's impossible to install a working platform inside the frame. If work is to be carried out at the corresponding tunnel face inside the frame, traffic must be suspended, and a new working platform must be erected within the frame, causing significant inconvenience to tunnel construction.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a tunnel construction operation platform and its installation method.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A tunnel construction work platform, the work platform comprising:

[0007] An arch frame, wherein the arch frame is an arch shape adapted to the inner wall of the tunnel;

[0008] The two traveling mechanisms are respectively located at the two arch feet of the arch frame to drive the arch frame to travel along the tunnel;

[0009] Four working wire ropes are provided at the top of the arch of the arch frame.

[0010] The working platform includes interconnected horizontal and vertical beams, and four climbing devices corresponding to the working wire rope are provided on the outer periphery of the working platform.

[0011] Preferably, the arch frame comprises multiple steel frames, and any two adjacent steel frames are fixed together by I-beams.

[0012] Preferably, the traveling mechanism includes:

[0013] A connecting plate, the length of which is adapted to the width of the arch frame, and the connecting plate having at least one horizontally extending bottom surface;

[0014] Rollers are provided at both ends of the bottom surface of the connecting plate;

[0015] Lifting components, a plurality of which are evenly distributed on the bottom surface of the connecting plate.

[0016] Preferably, the working platform further includes columns, with four columns arranged around the perimeter of the working platform at positions corresponding to the working wire rope, and the climber correspondingly arranged on the respective columns.

[0017] Preferably, the work platform further includes safety wire ropes, with four safety wire ropes corresponding one-to-one with the working wire ropes. Fall protection devices pass through the safety wire ropes, and the fall protection devices are fixedly connected to the uprights.

[0018] Preferably, the longitudinal beam is a hollow tube, and telescopic sections are slidably assembled at both ends of the longitudinal beam. The telescopic section is provided with a snap-fit ​​at one end of the truss to snap onto the arch frame.

[0019] Preferably, the crossbeam corresponds to the wall-mounted wheel at the tunnel face.

[0020] A method for installing a tunnel construction work platform, comprising:

[0021] Step S1: Construct an arch frame and install a corresponding traveling mechanism at the bottom of the arch frame. Use the traveling mechanism to move the arch frame to a preset position.

[0022] Step S2: Fix the upper end of the working wire rope to the steel frame;

[0023] Step S3: Assemble the work platform using the crossbeams and longitudinal beams, and fix the climber to the outer perimeter of the work platform;

[0024] Step S4: Pass the working wire rope through the climber from top to bottom, drive the working platform to the predetermined position through the climber, and fix the working platform to the steel frame.

[0025] Preferably, the traveling mechanism includes:

[0026] A connecting plate, the length of which is adapted to the width of the arch frame, and the connecting plate having at least one horizontally extending bottom surface;

[0027] Rollers, multiple rollers are evenly distributed on the bottom surface of the connecting plate;

[0028] Lifting components, a plurality of the lifting components and the rollers are arranged alternately on the bottom surface of the connecting plate;

[0029] Before the drive arch frame moves, the retracting lifting component makes the rollers touch the ground. After the arch frame is driven to the preset position by external force, the lifting component is lifted to suspend the rollers in the air.

[0030] Preferably, the longitudinal beam is a hollow tube, and telescopic sections are slidably assembled at both ends of the longitudinal beam. The telescopic section is provided with a snap-fit ​​at one end of the truss to snap onto the arch frame.

[0031] Beneficial effects: The structure of this application is simple and easy to manufacture. It can meet the needs of tunnel face construction while also meeting the needs of traffic. The working platform is raised and lowered on the working wire rope by a climber. The lifting operation is convenient and simple. The arch frame is compatible with the inner wall of the tunnel, which can minimize the space occupied inside the tunnel. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein:

[0033] Figure 1 This is a simplified structural diagram of the operating platform provided in a specific embodiment of the present invention;

[0034] Figure 2 This is a simplified structural diagram of the traveling mechanism in a specific embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the wire rope connection in a specific embodiment of the present invention;

[0036] Figure 4 A simplified structural diagram of the working platform in a specific embodiment provided by the present invention.

[0037] In the diagram: 1. Steel frame; 2. I-beam; 3. Connecting plate; 4. Lifting device; 5. Roller; 6. Hanging platform; 7. Safety wire rope; 8. Working wire rope; 9. Shackle; 10. Fall arrestor; 11. Counterweight; 12. Climbing device; 13. Column; 14. Horizontal beam; 15. Longitudinal beam; 16. Wall-mounted wheel; 17. U-shaped component. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0039] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0041] like Figure 1-4 As shown, a tunnel construction work platform is installed inside the tunnel to provide a work position for construction workers. Simultaneously, this work platform can meet the traffic flow requirements inside the tunnel while construction is underway. Specifically, the work platform includes an arch frame, a traveling mechanism, a working steel wire rope 8, and a work platform. The arch frame is an arch shape adapted to the inner wall of the tunnel, minimizing its space occupancy within the tunnel. During use, it maintains stability during construction and arch frame travel by adhering closely to the inner wall of the tunnel. Two traveling mechanisms are located at the two arch feet of the arch frame to drive the arch frame along the tunnel. Four working steel wire ropes 8 are correspondingly installed on the arch of the frame. The upper ends of the working steel wire ropes 8 are stably fixed to the inner side of the arch frame, and the lower ends of the working ropes extend to the bottom of the tunnel. The main body of the working platform includes interlocking crossbeams 14 and longitudinal beams 15, which can be spliced ​​and disassembled on-site according to actual needs for easy transportation. Four climbing devices 12 corresponding to the working steel wire ropes 8 are provided on the outer periphery of the working platform. The climbing devices 12 can be electric or manual. During the lifting process, the climbing devices 12 corresponding to the four steel wire ropes are operated synchronously to ensure the stability of the working platform during the climbing process. In this embodiment, a hanging plate 6 corresponding to the working steel wire ropes 8 is provided on the arch frame. The hanging plate 6 has through holes, and the working steel wire ropes 8 are fixed to the hanging plate 6 by shackles 9.

[0042] The lower end of the wire rope can be equipped with a counterweight 11 to ensure that the wire rope will not become entangled during construction.

[0043] In one optional embodiment, the arch frame includes multiple steel frames 1. To ensure stability, there can be 3-5 steel frames 1, with a spacing of 60-100cm between adjacent steel frames 1. Any two adjacent steel frames 1 are fixed together by I-beams 2. There are multiple I-beams 2, which are evenly distributed along the length of the steel frames 1.

[0044] The preferred steel frame 1 consists of 3 frames. The three steel frames 1 are connected into a whole by welding or bolting with I-beams 2. During construction, after the steel frames 1 are fixed in the tunnel by splicing, the adjacent steel frames 1 are fixed with I-beams 2.

[0045] In an optional embodiment, the traveling mechanism includes a connecting plate 3, rollers 5, and lifting components. The length of the connecting plate 3 is adapted to the width of the arch frame. The connecting plate 3 has at least one horizontally extending bottom surface. The lifting device 4 and rollers 5 are installed through this chassis. Rollers 5 are respectively provided at both ends of the bottom surface of the connecting plate 3. Multiple lifting components are evenly distributed on the bottom surface of the connecting plate 3. There are three lifting components, each corresponding to one of the three steel frames 1.

[0046] In this embodiment, the connecting plate 3 is a trapezoidal piece with its upper surface inclined to the outside of the tunnel. Since the steel frame 1 will bend into an arch, the end faces at both ends will be inclined. In order to ensure the stability of the connecting piece after it is connected to the steel frame 1, the upper surface of the connecting plate 3 is inclined to the outside of the tunnel, so that the connecting plate 3 is close to the arch frame.

[0047] In this embodiment, the connecting plate 3 is made of multiple welded steel plates, or it can be a block with a certain thickness.

[0048] In an optional embodiment, the work platform further includes a column 13, which is fixed to the work platform, specifically by welding or bolting to the longitudinal beam 15.

[0049] There are four uprights 13, which are set around the perimeter of the work platform at positions corresponding to the working wire rope 8. The climbing device 12 is installed on the corresponding upright 13. A fence is installed between any two adjacent uprights 13 to ensure the safety of construction personnel.

[0050] In an optional embodiment, the work platform further includes safety wire ropes 7, with four safety wire ropes 7 corresponding one-to-one with the working wire ropes 8. Each safety wire rope 7 is equipped with a corresponding fall arrest device 10, which is connected to a column 13 via a protective rope. The fall arrest device 10 is fixed to the column 13, and the safety wire rope 7 passes through the fall arrest device 10. The fall arrest device 10 is a fall arrestor: the wire rope can only be pulled out of the fall arrestor at a relatively slow speed. When the speed is too fast, the wire rope will be jammed, thereby preventing a fall. This can prevent the working wire rope 8 from breaking and falling.

[0051] The upper end of the safety wire rope 7 is also fixed to the hanging plate 6 by a shackle 9. The hanging plate 6 is fixed to the steel frame 1 by welding. The hanging plate 6 is provided with corresponding lifting holes for the wire rope.

[0052] In an optional embodiment, the longitudinal beam 15 is a hollow tube, specifically a square tube, a round tube, etc. In order to ensure the stability after assembly, the longitudinal beam 15 is a square tube, and telescopic sections are slidably assembled at both ends of the longitudinal beam 15. The telescopic sections are also square tubes adapted to the longitudinal direction, and the outer cross section of the telescopic section is adapted to the inner cross section of the longitudinal beam 15.

[0053] The telescopic section is equipped with a snap-fit ​​device at one end of the corresponding truss to snap onto the arch frame.

[0054] In this embodiment, the snap-fit ​​component can be a plate or a U-shaped component 17. Here, the snap-fit ​​component is preferably a U-shaped component 17. The width of the working platform is adapted to the width of the arch frame. Specifically, there are three longitudinal beams 15. The U-shaped component 17 at the end of the telescopic section is adapted to the corresponding longitudinal beam 15, thereby snapping onto the steel frame 1.

[0055] A bolt is provided on the outside of the U-shaped part 17. After the U-shaped part 17 is snapped into the steel frame 1, the steel frame 1 is pushed in by the bolt to achieve fixation.

[0056] In one embodiment, a fastening bolt is provided on the outer side of the longitudinal beam 15. After the fastening bolt is threaded onto the longitudinal beam 15, it extends into the interior of the longitudinal beam 15. After tightening the fastening bolt, it presses against the telescopic section, thereby fixing the telescopic section.

[0057] In an optional embodiment, the crossbeam 14 corresponds to the wall-mounted wheel 16 at the tunnel face, which can roll along the tunnel face during lifting and lowering, thereby reducing friction.

[0058] There are two crossbeams 14. After the two crossbeams 14 and three longitudinal beams 15 are spliced ​​together, the panels are laid and then the fence is set up to form a complete working platform.

[0059] The present invention also provides a method for installing a tunnel construction operation platform, comprising:

[0060] Step S1: Construct an arch frame and install a corresponding traveling mechanism at the bottom of the arch frame. Use the traveling mechanism to move the arch frame to a preset position.

[0061] Step S2: Fix the upper ends of the working wire rope 8 and the safety wire rope 7 to the steel frame 1;

[0062] Step S3: Assemble the work platform using the crossbeam 14 and longitudinal beam 15, and fix the climber 12 and fall arrestor to the outer perimeter column 13 of the work platform.

[0063] Step S4: Pass the working wire rope 8 through the climber 12 from top to bottom and the safety wire rope 7 through the fall arrestor from top to bottom. Drive the working platform to the predetermined position through the climber 12 and fix the working platform to the steel frame 1.

[0064] The traveling mechanism includes: a connecting plate 3, which is a trapezoidal piece with its upper surface inclined towards the outside of the tunnel. Because the steel frame 1 forms an arched bend, the end faces at both ends will tilt. To ensure the stability of the connecting piece after it is connected to the steel frame 1, the upper surface of the connecting plate 3 is inclined towards the outside of the tunnel, thus tightly fitting the connecting plate 3 to the arch frame. The length of the connecting plate 3 is adapted to the width of the arch frame, and the connecting plate 3 has at least one horizontally extending bottom surface; rollers 5, with multiple rollers 5 evenly distributed on the bottom surface of the connecting plate 3; and lifting components, with multiple lifting components and rollers 5 arranged alternately on the bottom surface of the connecting plate 3.

[0065] In this embodiment, the connecting plate 3 is made of multiple welded steel plates, or it can be a block with a certain thickness.

[0066] Before the drive arch frame moves, the retracting lifting component makes the roller 5 touch the ground. After the arch frame is driven to move to the preset position by external force, the lifting component is lifted to make the roller 5 suspend in the air.

[0067] In this embodiment, the roller 5 is connected to a drive motor, thereby enabling automated movement.

[0068] In an optional embodiment, the longitudinal beam 15 is a hollow tube, and telescopic sections are slidably assembled at both ends of the longitudinal beam 15. The telescopic section is provided with a snap-fit ​​at one end of the truss to snap onto the arch frame.

[0069] The snap-fit ​​component is a U-shaped component 17. The width of the working platform is adapted to the width of the arch frame. Specifically, there are three longitudinal beams 15. The U-shaped component 17 at the end of the telescopic section is adapted to the corresponding longitudinal beam 15, thus snapping onto the steel frame 1.

[0070] In one optional embodiment, detailed construction steps for a work platform are provided, including:

[0071] Step S1: Make and move the arch frame.

[0072] In constructing the arch frame, three steel frames 1 adapted to the tunnel are used. The steel frames 1 are connected into a whole by I-beams. Connecting plates 3 are welded and fixed at both ends of the arch frame. A jacking device 4 is installed below each connecting plate 3 corresponding to the position of the three steel frames 1. The jacking device 4 can be a jack and is equipped with two sets of rollers 5. The height of the rollers 5 is greater than the height of the jacking device 4 when it is retracted, but less than the height of the jacking device 4 when it is fully extended.

[0073] When in use, first retract the lifting device 4 so that the roller 5 touches the ground and moves to the working position. Then extend the lifting device 4 to touch the ground and level it at the same time. At this time, the roller 5 is off the ground, thus ensuring the stability of the arch frame.

[0074] Step S2: Install the wire rope.

[0075] A hanging plate 6 is welded to each side above the front and rear steel frames 1 of the arch frame. Each hanging plate 6 has two holes. The safety wire rope 7 and the working wire rope 8 are fixed in the holes using shackles 9. A counterweight 11 is fixed to the bottom of both wire ropes, with the counterweight 11 suspended to ensure the wire ropes are vertical. The lower end of the safety wire rope 7 passes through the fall arrestor 10, and the lower end of the working wire rope 8 passes through the climbing hoisting mechanism, with the counterweight 11 fixed to its bottom. Both the fall arrestor 10 and the climbing hoisting mechanism are fixed to the working platform column 13.

[0076] Step S3: Install the operating platform.

[0077] The working platform consists of columns 13, crossbeams 14, longitudinal beams 15, panels, and railings. One end of the crossbeam 14 corresponding to the working face is fixed with a wall-mounted wheel 16. The longitudinal beam 15 is made of two sizes of square tubes, and the small square steel at both ends can be pulled out to adjust the length of the longitudinal beam 15. The ends of the longitudinal beam 15 are equipped with U-shaped pieces 17 that can be fixed to the steel frame 1.

[0078] Step S4: Positioning the work platform.

[0079] When in use, the work platform is assembled on the ground. The worker starts the climbing device 12 on the work platform to raise the platform to a suitable height. Then, the length of the telescopic sections at both ends of the longitudinal beam 15 is adjusted, and the U-shaped piece 17 is fixed to the steel frame 1 for fixation.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. A tunnel construction operation platform, characterized in that, The operating platform includes: An arch frame, wherein the arch frame is an arch shape adapted to the inner wall of the tunnel; The two traveling mechanisms are respectively located at the two arch feet of the arch frame to drive the arch frame to travel along the tunnel; Four working wire ropes are provided at the top of the arch of the arch frame. The working platform, the main body of which includes interlocking crossbeams and longitudinal beams, and four climbing devices corresponding to the working wire rope are provided on the outer periphery of the working platform; The longitudinal beam is a hollow tube, and telescopic sections are slidably assembled at both ends of the longitudinal beam. The telescopic sections are square tubes adapted to the longitudinal beam. The outer cross section of the telescopic section is adapted to the inner cross section of the longitudinal beam. A snap-fit ​​device is provided at one end of the telescopic section corresponding to the truss to snap onto the arch frame. The snap-fit ​​component is a U-shaped component. The width of the working platform is adapted to the width of the arch frame. There are three longitudinal beams. The U-shaped component at the end of the telescopic section is adapted to the corresponding longitudinal beam, thus snapping onto the steel frame. The arch frame comprises multiple steel frames, and any two adjacent steel frames are fixed together by I-beams. A bolt is provided on the outside of the U-shaped part. After the U-shaped part is snapped into the steel frame, the steel frame is tightened by the bolt.

2. The tunnel construction operation platform according to claim 1, characterized in that, The traveling mechanism includes: A connecting plate, the length of which is adapted to the width of the arch frame, and the connecting plate having at least one horizontally extending bottom surface; Rollers are provided at both ends of the bottom surface of the connecting plate; Lifting components, a plurality of which are evenly distributed on the bottom surface of the connecting plate.

3. The tunnel construction operation platform according to claim 1, characterized in that, The working platform also includes columns, with four columns arranged around the perimeter of the working platform at positions corresponding to the working wire rope, and the climbing device correspondingly installed on the respective columns.

4. The tunnel construction operation platform according to claim 3, characterized in that, The work platform also includes safety steel wire ropes, with four safety steel wire ropes corresponding one-to-one with the working steel wire ropes. Fall protection devices pass through the safety steel wire ropes, and the fall protection devices are fixedly connected to the uprights.

5. The tunnel construction operation platform according to claim 1, characterized in that, The crossbeam corresponds to the wall-mounted wheel at the tunnel face.

6. A method for installing a tunnel construction operation platform, comprising installing the tunnel construction operation platform according to any one of claims 1-5, characterized in that, include: Step S1: Construct an arch frame and install a corresponding traveling mechanism at the bottom of the arch frame. Use the traveling mechanism to move the arch frame to a preset position. Step S2: Fix the upper end of the working wire rope to the steel frame; Step S3: Assemble the work platform using the crossbeams and longitudinal beams, and fix the climber to the outer perimeter of the work platform; Step S4: Pass the working wire rope through the climber from top to bottom, drive the working platform to the predetermined position through the climber, and fix the working platform to the steel frame.

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