A construction method for installing and disassembling a double-deck bridge upper chord inspection vehicle

Abstract

The present invention discloses a construction method for installing and removing a double-deck bridge upper chord inspection vehicle, comprising steps S1: installation and removal preparation; S2: removal of the upper chord inspection vehicle; S3: removal and hoisting of the inspection vehicle; and S4: installation of the new inspection vehicle. The upper chord inspection vehicle is installed and removed by disassembling it as a whole, rather than by installing it separately. This reduces installation time and improves vehicle installation efficiency. During overall installation and removal, the inspection vehicle is rotated 180 degrees from a transverse bridge orientation to a longitudinal bridge orientation, thereby preventing the inspection vehicle from contacting the railway contact network and potentially damaging it.

Description

Technical Field

[0001] The invention relates to the field of installation and disassembly of bridge inspection vehicles, in particular to an installation and disassembly construction method of a double-deck bridge upper chord inspection vehicle. Background Art

[0002] A bridge inspection vehicle is a specialized vehicle or repair equipment that provides a work platform for bridge inspectors during inspections. Equipped with bridge inspection instruments, it is used for mobile inspection and / or maintenance operations. Based on their structure, they can be categorized as either a hanging basket-type bridge inspection vehicle or a truss-type bridge inspection vehicle.

[0003] Existing dual-use highway and railway bridges typically utilize truss-type bridge inspection vehicles. To meet routine maintenance needs and ensure bridge safety, upper and lower chord inspection vehicles have been installed on the first and second sections of the main bridge, respectively. As these inspection vehicles age, some parts are experiencing signs of aging, and load-bearing components are corroded. Some components are severely corroded, posing safety risks. The existing upper chord inspection vehicles need to be updated or maintained.

[0004] Because the lower chord inspection vehicle modification and construction on a dual-use highway-rail bridge does not affect railway operations, construction can be carried out during the day. However, the upper chord inspection vehicle modification process must fully consider the railway's skylight period, which is a maximum of 5 hours, to meet construction requirements.

[0005] The existing winding inspection vehicle has the following problems when being installed and disassembled:

[0006] 1. During the overall installation and disassembly, work cannot be stopped midway and must be completed within one skylight operation time;

[0007] 2. The operation time of one skylight point is 4 hours. Considering the uncertain factors during construction, the construction process must be controlled within 3 hours;

[0008] 3. There is a railway contact network under the working area. During the entire construction, the contact network must not be bumped or damaged;

[0009] 4. Large lifting equipment cannot be used in railway operation areas;

[0010] 5. There is no effective rapid transfer equipment in the railway operation area. Summary of the Invention

[0011] The purpose of the present invention is to overcome the problem that the existing upper chord inspection vehicle has many restrictions on installation and removal, and to provide a construction method for installing and removing the upper chord inspection vehicle of a double-deck bridge.

[0012] A method for installing and disassembling a double-deck bridge upper chord inspection vehicle, the method comprising the following steps performed in sequence:

[0013] S1: Preparation for installation and removal:

[0014] S1.1: Fabrication of lifting points: Setting up special lifting points on the upper chord beams of the bridge;

[0015] S1.2: Prepare the flatbed transport vehicle. Integrate the reversible platform with the roller assembly onto the flatbed transport vehicle and add supporting parts.

[0016] S2: Removal of the upper inspection vehicle:

[0017] S2.2: Inspection vehicle movement: Construction personnel move the inspection vehicle through existing facilities and park it at the intersection of the bridge diagonal web members;

[0018] S2.3: Installation of hoisting balance bars and temporary reinforcement measures: Fix the prepared balance bars to the inspection vehicle by welding. Connect the two ends of the inspection vehicle to the track with a hand chain hoist, tightening the hoist to the position where the force is applied.

[0019] S2.4: Clearance and evacuation: Construction workers evacuate the inspection vehicle using a climbing vehicle;

[0020] S3: Inspection vehicle dismantling and hoisting:

[0021] S3.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations;

[0022] S3.2: Lifting the inspection vehicle: Construction personnel use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Using the designated lifting points, they securely tie the inspection vehicle with four slings and slowly lift it 50-100mm to free the vehicle's drive rollers from the vehicle track. The vehicle is then roughly leveled using the telescopic device.

[0023] S3.3: Dismantling the Travel Drive: Two teams of construction workers will remove the drive mechanisms on both sides of the inspection vehicle. The dismantled drive mechanisms will be placed on the inspection vehicle and secured with wire. Using the telescopic device on the inspection vehicle and the installed drive mechanism accessories, the inspection vehicle will be leveled. Four guy ropes will be attached to both ends of the vehicle. Ground personnel will pull the ropes slowly and forcefully to rotate the inspection vehicle from transverse to longitudinal orientation.

[0024] S3.4: Lower the inspection vehicle: After the inspection vehicle rotates, start the winch and slowly lower the inspection vehicle onto the prepared flatbed truck below;

[0025] S3.5: Translation of inspection vehicle: The inspection vehicle placed on the turning platform is pushed onto the flatbed vehicle via the provided rollers;

[0026] S3.6: Clearance and evacuation: Retract the lifting wire rope, securely tie the inspection vehicle to the transport flatbed, retract the tilting platform, clean and count the tools and other debris, ensuring that no tools or installed or removed objects are left in the track area, tow the flatbed to the designated location, and allow the construction personnel to leave the site.

[0027] S4: Check the car's new installations:

[0028] S4.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations;

[0029] S4.2: Moving the inspection vehicle: Construction workers use the rollers on the flatbed vehicle to move the inspection vehicle onto the turning platform;

[0030] S4.3: Inspection vehicle tying: Use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Use four slings to tie the wire rope to the inspection vehicle through the lifting points.

[0031] S4.4: Lift the inspection vehicle: Retract the aerial platform, start the winch, and slowly lift the inspection vehicle 50-100 mm. Use the telescopic device to roughly level the inspection vehicle, tie the guy rope, and lift the inspection vehicle to the rotation height.

[0032] S4.5: Rotate the inspection vehicle: Use a climbing vehicle to transport one or two construction workers to the inspection vehicle to direct and assist in rotating the vehicle.

[0033] S4.6: Install the travel drive: After the inspection vehicle is rotated into position, slowly lift it with a winch and install the drive mechanism on the track;

[0034] S4.7: Cleaning and evacuation: After the installation of the inspection vehicle's drive mechanism is completed and the overall lifting of the inspection vehicle is completed, the lifting points and balance struts are removed, the traction wire rope is retracted, and personnel evacuate the inspection vehicle through the climbing platform. The flip platform and climbing vehicle are retracted, and tools and other debris are cleaned and counted to ensure that no tools or installed objects are left in the track area. The flatbed truck is towed to the designated location, and the construction personnel leave the site.

[0035] Furthermore, in step S1.2, a hoisting winch and a climbing system may be integrated on the flatbed transport vehicle.

[0036] Furthermore, in step S2.3, the balance bar is set on the inner side of the two tracks, and the distance between its top and the bridge top plate is controlled to be 200 mm.

[0037] Furthermore, the step S2 further includes step S2.1: repairing the inspection vehicle: construction personnel enter the inspection vehicle from the existing boarding platform and repair the existing inspection vehicle so that it can move on the track.

[0038] The beneficial effects of the present invention are:

[0039] 1. Installing the upper string inspection vehicle by disassembling it as a whole instead of separately can reduce the installation time and improve the installation efficiency of the inspection vehicle.

[0040] 2. During overall installation and disassembly, the inspection vehicle is rotated 180 degrees from the transverse bridge direction to the longitudinal bridge direction, which can prevent the inspection vehicle from contacting the railway contact network and causing damage to the railway contact network.

[0041] 3. By changing the disassembly and assembly position of the inspection vehicle and combining it with a flatbed transport vehicle, the inspection vehicle can be assembled and disassembled at an external site, further reducing the installation and disassembly time of the inspection vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a flow chart of the construction method;

[0043] Figure 2 Schematic diagram of the lifting point structure;

[0044] Figure 3 This is a schematic diagram of the inspection vehicle movement construction in S2.2;

[0045] Figure 4 Set up a construction diagram for the hoisting balance bar in S2.3;

[0046] Figure 5 This is a schematic diagram of the inspection vehicle steering construction in S3.3;

[0047] Figure 6 This is a schematic diagram of the inspection vehicle translation construction in S3.5;

[0048] Figure 7 This is a schematic diagram of the rotation construction after the inspection vehicle is lifted in S4.5; DETAILED DESCRIPTION

[0049] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0050] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0051] Example 1

[0052] like Figures 1 to 7 As shown, a method for installing and removing a double-deck bridge upper chord inspection vehicle comprises the following steps performed in sequence:

[0053] S1: Preparation for installation and removal:

[0054] S1.1: Fabricate the lifting points. Fabricate special lifting points on the upper chord beam of the bridge; e.g. Figure 2 As shown, in this solution, the lifting point includes a rectangular steel piece, a through groove is opened in the middle of the rectangular steel piece, which serves as a lifting point through hole, and a reinforcement is added at the contact position between the lifting point and the upper chord beam of the bridge to improve the installation strength of the lifting point.

[0055] S1.2: Prepare a flatbed transport vehicle. The reversible platform with roller assembly installed is integrated onto the flatbed transport vehicle and equipped with supporting components. Furthermore, a hoisting winch and climbing system can be integrated into the flatbed transport vehicle. Since the inspection vehicle weighs 3 tons, to ensure overall construction safety, the hoisting equipment must fully consider the hoisting safety factor. Therefore, a 5T winch is used as the hoisting power source. In this solution, the flatbed transport vehicle can be a standard N17 flatbed transport vehicle.

[0056] S2: Removal of the upper inspection vehicle:

[0057] S2.1: Inspection vehicle repair: Construction personnel enter the inspection vehicle from the existing boarding platform and repair the existing inspection vehicle so that it can move on the track;

[0058] S2.2: Inspection vehicle movement: Construction personnel move the inspection vehicle through existing facilities and park it at the intersection of the bridge diagonal web members;

[0059] S2.3: Installation of hoisting balance bar and temporary reinforcement measures: Fix the prepared balance bar to the inspection vehicle by welding, and connect the two ends of the inspection vehicle to the track with a hand hoist. The tightening position of the hoist is just the force-bearing position; the balance bar is set on the inner side of the two tracks, and the distance between its top and the bridge top plate is controlled to be 200mm.

[0060] S2.4: Clearance and evacuation: Construction workers evacuate the inspection vehicle using a climbing vehicle;

[0061] Specifically, in this step S2, it is completed within the same skylight point and is divided into 5 steps. If it is found that the expected amount cannot be completed within the expected time, priority will be given to ensuring the repair and reinforcement measures of the inspection vehicle, and other processes will be postponed. The estimated time consumption is shown in the following table:

[0062]

[0063]

[0064] S3: Inspection vehicle dismantling and hoisting:

[0065] S3.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations;

[0066] S3.2: Lifting the inspection vehicle: Construction personnel use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Using the designated lifting points, they securely tie the inspection vehicle with four slings and slowly lift it 50-100mm to free the vehicle's drive rollers from the vehicle track. The vehicle is then roughly leveled using the telescopic device.

[0067] S3.3: Dismantling the Travel Drive: Two teams of construction workers will remove the drive mechanisms on both sides of the inspection vehicle. The dismantled drive mechanisms will be placed on the inspection vehicle and secured with wire. Using the telescopic device on the inspection vehicle and the installed drive mechanism accessories, the inspection vehicle will be leveled. Four guy ropes will be attached to both ends of the vehicle. Ground personnel will pull the ropes slowly and forcefully to rotate the inspection vehicle from transverse to longitudinal orientation.

[0068] S3.4: Lower the inspection vehicle: After the inspection vehicle rotates, start the winch and slowly lower the inspection vehicle onto the prepared flatbed truck below;

[0069] S3.5: Translation of inspection vehicle: The inspection vehicle placed on the turning platform is pushed onto the flatbed vehicle via the provided rollers;

[0070] S3.6: Clearance and evacuation: Retract the lifting wire rope, securely tie the inspection vehicle to the transport flatbed, retract the tilting platform, clean and count the tools and other debris, ensuring that no tools or installed or removed objects are left in the track area, tow the flatbed to the designated location, and allow the construction personnel to leave the site.

[0071] Specifically, in step S3, the overall hoisting construction of the inspection vehicle is divided into 7 steps, and the estimated time consumption is shown in the following table:

[0072] Serial number Process Name Estimated working hours (minutes) Remark 1 Preparation before lifting 30 2 Inspection vehicle lifting 20 3 Removing the travel drive 20 4 Rotating inspection car 30 5 Lower the inspection vehicle 30 6 Translation inspection vehicle 20 7 Clean up and evacuate 30 8 Total working hours: 180 (3 hours)

[0073] S4: Check the car's new installations:

[0074] S4.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations;

[0075] S4.2: Moving the inspection vehicle: Construction workers use the rollers on the flatbed vehicle to move the inspection vehicle onto the turning platform;

[0076] S4.3: Inspection vehicle tying: Use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Use four slings to tie the wire rope to the inspection vehicle through the lifting points.

[0077] S4.4: Lift the inspection vehicle: Retract the aerial platform, start the winch, and slowly lift the inspection vehicle 50-100 mm. Use the telescopic device to roughly level the inspection vehicle, tie the guy rope, and lift the inspection vehicle to the rotation height.

[0078] S4.5: Rotate the inspection vehicle: Use a climbing vehicle to transport one or two construction workers to the inspection vehicle to direct and assist in rotating the vehicle.

[0079] S4.6: Install the travel drive: After the inspection vehicle is rotated into position, slowly lift it with a winch and install the drive mechanism on the track;

[0080] S4.7: Cleaning and evacuation: After the installation of the inspection vehicle's drive mechanism is completed and the overall lifting of the inspection vehicle is completed, the lifting points and balance struts are removed, the traction wire rope is retracted, and personnel evacuate the inspection vehicle through the climbing platform. The flip platform and climbing vehicle are retracted, and tools and other debris are cleaned and counted to ensure that no tools or installed objects are left in the track area. The flatbed truck is towed to the designated location, and the construction personnel leave the site.

[0081] In step S4, the overall hoisting construction of the inspection vehicle is similar to the dismantling construction, which is divided into 7 steps. The estimated time consumption is shown in the following table:

[0082] Serial number Process Name Estimated working hours (minutes) Remark 1 Preparation before lifting 30 2 Translation inspection vehicle 20 Can be performed simultaneously with the next item 3 Check the vehicle lifting point settings 20 4 Lifting inspection vehicle 30 5 Rotating inspection car 30 6 Installing the travel drive 20 7 Clean up and evacuate 30 8 Total working hours: 180 (3 hours)

[0083] Installing the upper-string inspection vehicle through complete disassembly, rather than separate disassembly, reduces installation time and improves installation efficiency. During complete installation, the vehicle rotates 180 degrees from a transverse position to a longitudinal position, preventing contact with the railway catenary and potentially damaging it. By changing the disassembly and assembly position of the vehicle and combining it with a flatbed transport vehicle, the vehicle can be assembled and disassembled at an off-site location, further reducing installation time.

[0084] The above-described embodiments merely represent specific implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A method for installing and disassembling a double-deck bridge upper chord inspection vehicle, characterized in that: The construction method comprises the following steps performed in sequence: S1: Preparation for installation and removal: S1.1: Fabrication of lifting points: Setting up special lifting points on the upper chord beams of the bridge; S1.2: Prepare the flatbed transport vehicle. Integrate the reversible platform with the roller assembly onto the flatbed transport vehicle and add supporting parts. S2: Removal of the upper inspection vehicle: S2.2: Inspection vehicle movement: Construction personnel move the inspection vehicle through existing facilities and park it at the intersection of the bridge diagonal web members; S2.3: Installation of hoisting balance bars and temporary reinforcement measures: Fix the prepared balance bars to the inspection vehicle by welding. Connect the two ends of the inspection vehicle to the track with a hand chain hoist, tightening the hoist to the position where the force is applied. S2.4: Clearance and evacuation: Construction workers evacuate the inspection vehicle using a climbing vehicle; S3: Inspection vehicle dismantling and hoisting: S3.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations; S3.2: Lifting the inspection vehicle: Construction personnel use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Using the designated lifting points, they securely tie the inspection vehicle with four slings and slowly lift it 50-100mm to free the vehicle's drive rollers from the vehicle track. The vehicle is then leveled using the telescopic device. S3.3: Dismantling the Travel Drive: Two teams of construction workers will remove the drive mechanisms on both sides of the inspection vehicle. The dismantled drive mechanisms will be placed on the inspection vehicle and secured with wire. Using the telescopic device on the inspection vehicle and the installed drive mechanism accessories, the inspection vehicle will be leveled. Four guy ropes will be attached to both ends of the vehicle. Ground personnel will pull the ropes slowly and forcefully to rotate the inspection vehicle from transverse to longitudinal orientation. S3.4: Lower the inspection vehicle: After the inspection vehicle rotates, start the winch and slowly lower the inspection vehicle onto the prepared flatbed truck below; S3.5: Translation of inspection vehicle: The inspection vehicle placed on the turning platform is pushed onto the flatbed vehicle via the provided rollers; S3.6: Clearance and evacuation: Retract the lifting wire rope, securely tie the inspection vehicle to the transport flatbed, retract the tilting platform, clean and count the tools and other debris, ensuring that no tools or installed or removed objects are left in the track area, tow the flatbed to the designated location, and allow the construction personnel to leave the site. S4: Check the car's new installations: S4.1: Preparation before lifting: Use the locomotive to tow the prepared flatbed transport vehicle to the bottom of the inspection vehicle to be installed; deploy the rotating platform and aerial platform as required, and place the required tools in the designated locations; S4.2: Moving the inspection vehicle: Construction workers use the rollers on the flatbed vehicle to move the inspection vehicle onto the turning platform; S4.3: Inspection vehicle tying: Use a climbing vehicle to pull the winch wire rope to the top of the inspection vehicle. Use four slings to tie the wire rope to the inspection vehicle through the lifting points. S4.4: Lift the inspection vehicle: Retract the aerial platform, start the winch, and slowly lift the inspection vehicle 50-100 mm. Use the telescopic device to level the inspection vehicle, tie the guy rope, and lift the inspection vehicle to the rotation height. S4.5: Rotate the inspection vehicle: Use a climbing vehicle to transport one or two construction workers to the inspection vehicle, directing and assisting in rotating the inspection vehicle; S4.6: Install the travel drive: After the inspection vehicle is rotated into position, slowly lift it with a winch and install the drive mechanism on the track; S4.7: Cleaning and evacuation: After the installation of the inspection vehicle's drive mechanism is completed and the overall lifting of the inspection vehicle is completed, the lifting points and balance struts are removed, the traction wire rope is retracted, and personnel evacuate the inspection vehicle through the climbing platform. The flip platform and climbing vehicle are retracted, and tools and other debris are cleaned and counted to ensure that no tools or installed objects are left in the track area. The flatbed truck is towed to the designated location, and the construction personnel leave the site.

2. The method for installing and disassembling a double-deck bridge upper chord inspection vehicle according to claim 1, characterized in that: In step S1.2, a hoisting winch and a climbing system are integrated on a flatbed transport vehicle.

3. The method for installing and disassembling a double-deck bridge upper chord inspection vehicle according to claim 1, characterized in that: In step S2.3, the balance bar is set on the inner side of the two tracks, and the distance between its top and the bridge top plate is controlled to be 200 mm.

4. The method for installing and disassembling a double-deck bridge upper chord inspection vehicle according to claim 1, characterized in that: Said step S2 further includes step S2.1: repairing the inspection vehicle: construction personnel enter the inspection vehicle from the existing boarding platform and repair the existing inspection vehicle so that it can move on the track.

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