Bridge dismantling method and equipment

Abstract

The present application relates to the technical field of bridge demolition, and in particular to a method and equipment for bridge demolition, which includes the following steps: S1, construction preparation, preparation of construction equipment and tools; S2, demolition work, S2.1, bridge deck demolition, moving construction equipment along the bridge deck to the starting point of demolition work, cutting the bridge deck, and then using construction equipment to lift the bridge deck to the undemolished bridge deck for transportation; S2.2, beam demolition, using tools to remove the connections between adjacent beams, and using construction equipment to drive the beams to the undemolished bridge deck for transportation; S2.3, pier demolition, after the beams are demolished, the piers are demolished; S3, cleaning work, cleaning the construction road surface and removing construction waste. The present application has the effect of improving the efficiency of bridge demolition.

Description

Technical Field

[0001] The present application relates to the technical field of bridge demolition, and in particular to a method and equipment for dismantling a bridge on a bridge. Background Art

[0002] With the continuous development of the urban economy, traffic volume continues to increase, and the number of overloaded and underloaded vehicles continues to increase, which has brought certain impacts to bridges. Under the repeated impact of heavy vehicles, the bridge deck is severely worn, with severe peeling and exposed bones. Concrete is damaged and cracked in many places throughout the bridge. The bridge deck system, superstructure, and substructure all have different degrees of defects. Or the existing bridge cannot meet the needs of urban development, so there is a need to demolish the bridge.

[0003] In the existing technology, conventional demolition methods for bridge structures mainly include mechanical crushing and demolition, blasting, cutting, disassembling and hoisting. Mechanical demolition such as pneumatic crushing and large-scale mechanical crushing requires less technical investment and a shorter construction period, but the environmental pollution during construction is large and it is easy to have a certain impact on the retained structure. The blasting construction period is short, but it needs to maintain a certain safe distance from surrounding buildings, and it has a great social impact and causes particularly large air pollution in the vicinity after blasting. At the same time, blasting construction requires strict safety and traffic control at the construction site. The use of concrete cutting and demolition has lower noise and air pollution, and does not cause damage to the retained structure. Compared with traditional bridge crushing and demolition technology, reinforced concrete cutting and demolition technology has high requirements for the protection of the surrounding environment.

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in this technology: some bridges located inside the city cannot be demolished by floating crane method, and demolition by blasting method will generate a large amount of dust that affects the nearby urban environment and traffic; if cutting method is used, the equipment installation and dismantling cycle is long and the work efficiency is low. Summary of the Invention

[0005] In order to improve the efficiency of bridge demolition, the present application provides a method and equipment for bridge demolition.

[0006] In the first aspect, the present application provides a method for dismantling a bridge on a bridge, which adopts the following technical solution:

[0007] A method for dismantling a bridge on a bridge comprises the following steps:

[0008] S1. Construction preparation, preparation of construction equipment and tools;

[0009] S2. Demolition work,

[0010] S2.1. Demolition of the bridge deck: Move the construction equipment along the bridge deck to the starting point of the demolition work, cut the bridge deck, and then use the construction equipment to lift the bridge deck to the undemolished bridge deck for transportation;

[0011] S2.2, beam removal: remove the connections between adjacent beams with tools, and use construction equipment to transport the beams to the unremoved bridge deck for transportation;

[0012] S2.3, dismantling the bridge piers: after the beams are dismantled, dismantle the bridge piers;

[0013] S3. Cleaning work: clean the construction road surface and remove construction waste.

[0014] By adopting the above technical solution, when dismantling a bridge, firstly, tools are prepared, then the connections of the wet joints of the bridge panels are cut and separated, and the bridge panels are hoisted by construction equipment onto transportation equipment and transported away from the bridge deck; then the crossbeams are dismantled, first the connection between the crossbeams is broken, and on some bridges with suspension cables, the suspension cables connected to them are first removed, and then the crossbeams are moved away from the piers by construction equipment, and hoisted onto transportation equipment and transported away from the bridge deck; then the piers can be cut and removed at a selected time period, and after the bridge is dismantled, it is cleaned and construction waste is removed; the above-mentioned method of dismantling the bridge on the bridge reduces the need to build a gantry crane for hoisting again, reduces time and labor costs, improves demolition efficiency, and reduces the impact on urban life, so that the bridge can be dismantled while ensuring traffic.

[0015] Optionally, in step S2, the bridge deck and beams are dismantled from the middle of the bridge toward both ends.

[0016] By adopting the above technical solution, during the process of bridge demolition, the bridge can be demolished from the middle and both ends can be demolished at the same time, which further improves the demolition efficiency and further reduces the impact on urban life.

[0017] In the second aspect, the present application provides a bridge dismantling device, which adopts the following technical solution:

[0018] A bridge dismantling device includes a bridge dismantling machine and a transport vehicle. The bridge dismantling machine includes a walking mechanism, a load-bearing beam, a suspension mechanism, a sliding support mechanism and a fixed support mechanism. The walking mechanism is arranged on the load-bearing beam to drive the load-bearing beam to move along the bridge deck. The suspension mechanism is slidably connected to the load-bearing beam and is used to suspend the bridge deck or crossbeam. The sliding support mechanism is slidably arranged on the load-bearing beam. The fixed support mechanism is arranged at one end of the load-bearing beam. The sliding support mechanism and the fixed support mechanism cooperate to stabilize the load-bearing beam. The transport vehicle is located on the undismelied bridge deck and is used to receive the bridge deck or crossbeam transported by the suspension mechanism.

[0019] By adopting the above technical solution, the traveling mechanism is used to drive the load-bearing beam to move to the middle of the bridge, and then the sliding support mechanism and the fixed support mechanism are used to support the two ends of the bridge deck to be demolished and fixed in contact with the bridge deck. The bridge deck is then cut, and the bridge deck is fixed and suspended by the suspension mechanism. The suspension mechanism then drives the bridge deck to move onto the transport vehicle. The bridge demolition machine and transport vehicle set up reduce the time for setting up the gantry crane track and reduce the engineering time. The demolition efficiency is high and the labor cost is relatively low.

[0020] Optionally, the walking mechanism includes a first walking frame, a second walking frame, walking wheels and a driving assembly, two first walking frames are provided at one end of the load-bearing beam, and the two first walking frames are respectively located on both sides of the load-bearing beam; two second walking frames are provided at the other end of the load-bearing beam, the first walking frame and the second walking frame are both provided with the walking wheels, and the first walking frame and the second walking frame are both provided with the driving assembly, and the driving assembly is used to drive the walking wheels to rotate.

[0021] By adopting the above technical solution, the driving assembly drives the walking wheels to roll along the bridge deck, and the load-bearing beam moves along the bridge deck. The set walking mechanism can realize the rapid movement of the load-bearing beam along the bridge deck, reducing the time for the empty vehicle to rush to the construction location, thereby shortening the construction time and improving the demolition efficiency; and walking wheels are provided on both sides, so that the load-bearing beam can move smoothly.

[0022] Optionally, an outward expansion support mechanism is provided on the load-bearing beam, and the outward expansion support mechanism is used for temporary support of the load-bearing beam and for transporting the bridge deck or beam by the transport vehicle; an outward movement mechanism is provided on the load-bearing beam, and the outward movement mechanism includes a sliding frame and an outward movement cylinder, and the load-bearing beam is provided with two sliding frames slidingly provided at one end of the first walking frame, and the first walking frame is connected to the sliding frame; two outward movement cylinders are provided on the load-bearing beam, and the two outward movement cylinders are respectively connected to the two sliding frames and drive the two sliding frames to move away from or closer to each other.

[0023] By adopting the above technical solution, when the transport vehicle needs to move under the load-bearing beam to transport the crossbeam, the outward expansion support mechanism can be used to drive the load-bearing beam to rise, so that the walking wheels on the first walking frame are separated from the bridge deck, and then the outward movement cylinder is started, and the outward movement cylinder drives the first walking frame to slide, and the two first walking frames move away from each other, and the outward expansion support mechanism approaches the bridge deck and forms a space for the crossbeam and the transport vehicle to pass through. The transport vehicle moves under the crossbeam, and the suspension mechanism places the crossbeam on the transport vehicle. The set outward movement mechanism and outward expansion support mechanism reduce the number of times the bridge dismantling machine goes back and forth. The transport vehicle carries the bridge deck and the crossbeam back and forth, further shortening the time for the bridge dismantling machine to go back and forth, so that the dismantling efficiency is improved.

[0024] Optionally, the outward expansion support mechanism includes a support frame, an outward moving frame and a support assembly. Two outward moving frames are arranged on the load-bearing beam for sliding in the vertical direction. The two outward moving frames protrude from both sides of the bridge deck and form a space between the side walls close to each other for the bridge deck or crossbeam to pass through; the support frame is arranged on the outward moving frame and extends to the bridge deck for supporting the outward moving frame, and the support assembly is arranged on the load-bearing beam, and the support assembly is connected to the outward moving frame and drives the outward moving frame to slide.

[0025] By adopting the above technical solution, the support assembly is first used to drive the outward moving frame to slide, the outward moving frame drives the support frame to approach the bridge deck, the support frame abuts against the bridge deck, and the support frame drives the load-bearing beam to rise, so that the walking wheel is separated from the bridge deck; then the outward moving cylinder is used to drive the sliding frame to slide, the sliding frame drives the first walking frame to slide, the first walking frame slides to the outside of the bridge deck, and then the transport vehicle can slide between the two outward moving frames to transport the beams or bridge panels; the outward expansion support mechanism is simple in structure and easy to operate. It can increase the stability of the load-bearing beam while supporting the load-bearing beam, and at the same time facilitates the transportation of bridge panels or beams, thereby improving work efficiency.

[0026] Optionally, the outward moving frame is provided with an alignment mechanism, which includes an alignment roller, a positioning rod and an adjustment assembly. Each of the outward moving frames is slidingly provided with the positioning rod, and the side walls of the two positioning rods close to each other are rotatably connected with the alignment rollers. The alignment rollers abut against the side walls of the transport vehicle to enable the transport vehicle to be quickly aligned with the load-bearing beam.

[0027] By adopting the above technical solution, when the transport vehicle approaches the bridge deck or beam, the transport vehicle moves between the two sets of alignment rollers, then stops the movement of the transport vehicle and shifts to neutral, uses the adjustment component to drive the alignment rollers at the ends of the positioning rods toward the transport vehicle, and then adjusts the direction of the transport vehicle so that the two sides of the transport vehicle respectively contact the alignment rollers on both sides, and continues to drive the transport vehicle to the specified position, uses the suspension mechanism to drive the bridge deck and beam to move onto the transport vehicle, and then drives the adjustment component to drive the alignment rollers on the positioning rods away from the transport vehicle, and then drives the transport vehicle away from the load-bearing beam, and then adjusts the position of the fixed support mechanism and the sliding support mechanism to realize the adjustment of the load-bearing beam position, and carries out the next stage of bridge deck and beam removal; the set alignment mechanism reduces the offset of the beam position on the transport vehicle when placing the beam, reduces the instability of the beam caused by the offset of the center of gravity or the scratching of the bridge demolition machine, enhances the stability of the transport vehicle and the stability of the bridge demolition machine, and can improve the safety of construction at the same time.

[0028] Optionally, the adjustment component includes an adjustment cylinder, which is disposed on the outward moving frame and connected to the positioning rod. The adjustment cylinder drives the alignment roller connected to the positioning rod to slide.

[0029] By adopting the above technical solution, the adjusting cylinder is started, and the adjusting cylinder drives the positioning rod toward the transport vehicle until the alignment roller on the positioning rod abuts against the transport vehicle; the set adjustment component has a simple structure and stable action, which can speed up the positioning of the transport vehicle and improve the dismantling efficiency.

[0030] Optionally, an auxiliary mechanism is provided on the support frame, and the auxiliary mechanism includes an auxiliary wheel. The auxiliary wheel is rotatably provided on the support frame, and the rotation direction of the auxiliary wheel is the same as the movement direction of the bridge deck or the beam and supports the bridge deck or the beam.

[0031] By adopting the above technical solution, when the transport vehicle approaches the transport location, the auxiliary wheels can abut against the bridge deck or beam and rotate with the movement of the suspension mechanism, so that the bridge deck or beam can exert force on the bridge, facilitating the control of the center of the load-bearing beam and improving safety.

[0032] Optionally, the auxiliary mechanism further includes a power assembly, the power assembly includes a power motor, and the power motor is connected to the auxiliary wheel and drives the auxiliary wheel to rotate.

[0033] By adopting the above technical solution, when the suspension mechanism drives the bridge deck or beam to move, the power motor drives the auxiliary wheel to rotate, and the auxiliary wheel drives the bridge deck and beam to slide, so that the suspension mechanism and the bridge deck or beam move synchronously, thereby reducing the displacement of the suspension mechanism and the bridge deck or beam, improving safety, and facilitating the movement of the bridge deck and beam, thereby improving the efficiency of the demolition work.

[0034] In summary, this application has the following beneficial technical effects:

[0035] 1. When dismantling a bridge, first prepare tools and tools, then cut and separate the wet joints of the bridge deck, use construction equipment to hoist the bridge deck onto transportation equipment, and transport it away from the bridge deck; then dismantle the beams, first break the connection between the beams, and on some bridges with suspension cables, first remove the suspension cables connected to them, then use construction equipment to move the beams away from the piers, and hoist them onto transportation equipment to transport them away from the bridge deck; then you can choose a time period to cut and remove the piers, and after the bridge is dismantled, clean up and remove construction waste; the above-mentioned bridge dismantling method reduces the need to set up a gantry crane for hoisting again, reduces time and labor costs, improves dismantling efficiency, and at the same time reduces the impact on urban life, so that the bridge can be dismantled while ensuring traffic.

[0036] 2. When the transport vehicle approaches the bridge deck or cross beam, the transport vehicle moves between the two sets of alignment rollers, then stops the movement of the transport vehicle and shifts to neutral, uses the adjusting component to drive the alignment rollers at the ends of the positioning rods to approach the transport vehicle, and then adjusts the direction of the transport vehicle so that the two sides of the transport vehicle respectively abut against the alignment rollers on both sides, and continues to drive the transport vehicle to the specified position, uses the suspension mechanism to drive the bridge deck and cross beam to move onto the transport vehicle, and then drives the adjusting component to drive the alignment rollers on the positioning rods away from the transport vehicle, and then drives the transport vehicle away from the load-bearing beam, and then adjusts the position of the fixed support mechanism and the sliding support mechanism to adjust the position of the load-bearing beam, and then carries out the next stage of bridge deck and cross beam removal; the set alignment mechanism reduces the offset of the position of the cross beam on the transport vehicle when placing the cross beam, reduces the instability of the cross beam caused by the offset of the center of gravity or the scratching of the bridge demolition machine, enhances the stability of the transport vehicle and the stability of the bridge demolition machine, and can improve the safety of construction at the same time;

[0037] 3. When the suspension mechanism drives the bridge deck or beam to move, the power motor drives the auxiliary wheel to rotate, and the auxiliary wheel drives the bridge deck and beam to slide, so that the suspension mechanism and the bridge deck or beam move synchronously, thereby reducing the displacement of the suspension mechanism and the bridge deck or beam, improving safety, and facilitating the movement of the bridge deck and beam, thereby improving the efficiency of the demolition work. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a flowchart of the bridge dismantling method in an embodiment of the present application;

[0039] Figure 2 This is a schematic diagram of the overall structure of the bridge dismantling equipment in the embodiment of the present application;

[0040] Figure 3 This is a structural diagram of the outward moving mechanism in an embodiment of the present application;

[0041] Figure 4 This is a schematic diagram of the structure of the driving component in the embodiment of the present application;

[0042] Figure 5 This is a structural diagram of the outward expansion support mechanism in an embodiment of the present application;

[0043] Figure 6 This is a structural diagram of the rotating support assembly in an embodiment of the present application;

[0044] Figure 7 This is a structural diagram of the fixed support mechanism in an embodiment of the present application;

[0045] Figure 8 This is a structural diagram of a fixed support assembly in an embodiment of the present application;

[0046] Figure 9 This is a schematic diagram of the installation position of the sliding support mechanism in an embodiment of the present application;

[0047] Figure 10 This is a structural diagram of the sliding support mechanism in an embodiment of the present application;

[0048] Figure 11 This is a structural diagram of the suspension mechanism in an embodiment of the present application;

[0049] Figure 12 This is a schematic diagram of the installation position of the alignment mechanism in the embodiment of the present application;

[0050] Figure 13 Schematic diagram of the structure of the alignment mechanism in the embodiment of the present application.

[0051] Reference numerals: 100, bridge demolition machine; 200, transport vehicle; 300, traveling mechanism; 310, first traveling frame; 320, second traveling frame; 330, traveling wheel; 340, driving assembly; 341, driving motor; 342, driving gear; 343, driven gear; 400, bearing beam; 500, suspension mechanism; 510, fixed rail; 520, bearing seat; 530, driving wheel; 540, reduction motor; 550, suspension assembly; 551, reduction gear; 552, bearing seat; 553, driving wheel; 554, reduction motor; 555, suspension assembly; 556, reduction gear; 557, reduction gear; 558, reduction gear; 559, reduction gear; 560, reduction gear; 561, reduction gear; 562, reduction gear; 563, reduction gear; 564, reduction gear; 565, reduction gear; 566, reduction gear; 567, reduction gear; 568, reduction gear; 569, reduction gear; 570, reduction gear; 571, reduction gear; 572, reduction gear; 573, reduction gear; 574, reduction gear; 575, reduction gear; 576, reduction gear; 577, reduction gear; 578, reduction gear; 579, reduction gear; 580, reduction gear; 581, reduction gear; 582, reduction gear; 583, reduction gear; 584, reduction gear; 585, reduction gear 2. Reel; 553. Suspension seat; 554. Suspension bolt; 600. Sliding support mechanism; 610. Slide rail; 620. First sliding seat; 630. Sliding assembly; 631. Roller; 632. Sliding motor; 640. Second support rod; 650. Third support leg; 660. Second lifting cylinder; 670. Flip motor; 680. Fifth transmission gear; 690. Sixth transmission gear; 700. Fixed support mechanism; 710. Rotating support assembly; 711. Rotating Rod; 712, rotating motor; 713, first transmission gear; 714, second transmission gear; 720, first support leg; 730, first telescopic cylinder; 740, fixed support assembly; 741, first support rod; 742, second support leg; 743, first lifting cylinder; 800, outward movement mechanism; 810, sliding frame; 820, outward movement cylinder; 910, outward expansion support mechanism; 911, support frame; 912, outward movement frame; 913, support assembly; 914, fixed Frame; 920, alignment mechanism; 921, alignment roller; 922, positioning rod; 923, adjustment assembly; 924, mounting frame; 925, rotating motor; 926, seventh transmission gear; 927, eighth transmission gear; 930, auxiliary mechanism; 931, auxiliary wheel; 932, power assembly; 933, power motor; 934, third transmission gear; 935, fourth transmission gear; 936, mounting block; 937, connecting rod; 938, telescopic spring; 940, cantilever beam. DETAILED DESCRIPTION

[0052] The following is combined with Figures 1-13 This application is described in further detail.

[0053] The embodiment of the present application discloses a method for dismantling a bridge on a bridge.

[0054] refer to Figure 1 The bridge dismantling method comprises the following steps:

[0055] S1. Construction preparation: move construction equipment to both ends of the bridge and prepare cutting or bolt removal equipment and other tools;

[0056] S2. Demolition work,

[0057] S2.1. Deck removal: Move the construction equipment along the deck to the middle of the bridge. First, cut and remove one deck, then proceed from the middle toward both ends of the bridge. During the demolition process, use the construction equipment to lift the deck onto the remaining deck for transportation.

[0058] S2.2, beam removal: Remove the connections between adjacent beams using bolt removal equipment. Use construction equipment to transport the beams to the unremoved bridge deck. After removing two beams, proceed from the middle toward the ends.

[0059] S2.3. Pier removal: After the crossbeams are removed, the piers will be removed. Pier removal can be carried out during periods of low traffic volume, and the removal can be carried out in sections, with piers that will not affect urban life being removed first.

[0060] S3. Cleaning work: clean the construction road surface and remove construction waste to reduce the pollution of construction waste to the city.

[0061] The implementation principle of a bridge demolition method on a bridge in an embodiment of the present application is as follows: when demolishing a bridge, first prepare tools and tools, then transport the construction equipment to the middle of the bridge, and then cut and separate the connections of the wet joints of the bridge deck. Pay attention to the protection under the bridge during cutting and separation, and use construction equipment to hoist the bridge deck onto the transportation equipment and transport it away from the bridge deck; then dismantle the beams, first use a bolt removal tool to break the connection between the beams, and on some bridges with suspension cables, first remove the suspension cables connected to them, and then use construction equipment to hang the beams, and slowly adjust the beams away from the piers, and hoist them onto the transportation equipment to transport them away from the bridge deck; then you can select a time period to cut and remove the piers, and after the bridge is demolished, clean up and remove construction waste.

[0062] The embodiment of the present application also discloses a bridge dismantling device.

[0063] refer to Figure 2 and Figure 3The bridge demolition equipment on the bridge includes a bridge demolition machine 100 and a transport vehicle 200 that can be moved to the bottom of the bridge demolition machine 100. The bridge demolition machine 100 includes a load-bearing beam 400. An outward movement mechanism 800 is provided on the load-bearing beam 400. The outward movement mechanism 800 includes a sliding frame 810. One end of the load-bearing beam 400 is slidably connected to two sliding frames 810. The two sliding frames 810 are staggered and parallel in axis. Two outward movement oil cylinders 820 are fixedly connected to the load-bearing beam 400. The two outward movement oil cylinders 820 are arranged back to back, and the piston rods of the two outward movement oil cylinders 820 are respectively connected to the two sliding frames 810. The outward movement oil cylinders 820 drive the two sliding frames 810 to move relative to each other. A walking mechanism 300 is provided at one end of the two sliding frames 810 away from each other, and the walking mechanism 300 includes two first walking frames 310 respectively fixedly connected to one end of the two sliding frames 810 away from each other, the two first walking frames 310 are arranged in parallel and are respectively located on both sides of the load-bearing beam 400, and two second walking frames 320 are fixedly connected to one end of the load-bearing beam 400 away from the first walking frame 310, and a plurality of walking wheels 330 are rotatably connected to the first walking frame 310 and the second walking frame 320, and a driving assembly 340 for driving the walking wheels 330 to rotate is provided on the first walking frame 310 and the second walking frame 320.

[0064] refer to Figure 2 and Figure 4 , this embodiment is demonstrated by taking the driving assembly 340 on the first walking frame 310 as an example, the driving assembly 340 includes a driving motor 341, the driving motor 341 is fixedly connected to the first walking frame 310, and a driving gear 342 is keyed to the output shaft of the driving motor 341. A driven gear 343 coaxially connected to the walking wheel 330 is rotatably connected to the first walking frame 310, and the driving gear 342 and the driven gear 343 are engaged. When the driving motor 341 is started, the driving motor 341 drives the driving gear 342 to rotate, the driving gear 342 drives the driven gear 343 to rotate, and the driven gear 343 drives the walking wheel 330 to rotate.

[0065] refer to Figure 2 and Figure 5An outward expansion support mechanism 910 is provided on the load-bearing beam 400, and the outward expansion support mechanism 910 includes two fixed frames 914 fixedly connected to the load-bearing beam 400, and the two fixed frames 914 are respectively located on both sides of the load-bearing beam 400, and a support assembly is provided on the fixed frame 914, and the support assembly 913 includes a support cylinder fixedly connected to the fixed frame 914, and the piston rod of the support cylinder faces the bridge deck, and an outward moving frame 912 is fixedly connected to the piston rod of the support cylinder. The outward moving frame 912 can protrude from the bridge deck and is slidably connected to the fixed frame 914, and a space is formed between the side walls of the two outward moving frames 912 that are close to each other, which is convenient for the bridge deck or crossbeam to pass through; the outward moving frame 912 is fixedly connected to a support frame 911 at one end away from the support cylinder, and the support frame 911 is perpendicular to the outward moving frame 912 and parallel to the bridge deck, and the support frame 911 can abut against the bridge deck.

[0066] refer to Figure 2 and Figure 6 , the end of the load-bearing beam 400 away from the first walking frame 310 is integrally provided with a cantilever beam 940, and the cantilever beam 940 is provided with a fixed support mechanism 700, and the fixed support mechanism 700 includes a rotating support assembly 710, and the rotating support assembly 710 includes two rotating rods 711 rotatably connected to the cantilever beam 940, and the two rotating rods 711 are respectively located on both sides of the cantilever beam 940, and a rotating motor 712 is fixedly connected to the cantilever beam 940, and a first transmission gear 713 is keyed to the output shaft of the rotating motor 712, and a second transmission gear 714 is fixedly connected to the rotating rod 711. The first transmission gear 713 and the second transmission gear 714 When the rotating motor 712 is engaged and started, the rotating motor 712 drives the first transmission gear 713 to rotate, the first transmission gear 713 drives the second transmission gear 714 to rotate, and the second transmission gear 714 drives the rotating rod 711 to rotate; a sliding hole is provided at the end of the rotating rod 711 away from the cantilever beam 940, and the sliding hole is provided along the length direction of the rotating rod 711, and a first support leg 720 is slidably connected in the two sliding holes; a first telescopic oil cylinder 730 is provided in the sliding hole, and the piston rod of the first telescopic oil cylinder 730 is fixedly connected to the first support leg 720, and the first telescopic oil cylinder 730 is telescopic and drives the first support leg 720 away from the cantilever beam 940.

[0067] refer to Figure 2 and Figure 7A fixed support assembly 740 is provided on the load-bearing beam 400, and the fixed support assembly 740 includes two first support rods 741 fixedly connected to the load-bearing beam 400. The two first support rods 741 are respectively located on both sides of the load-bearing beam 400 and are vertically arranged. The first support rod 741 is located on the side of the second walking frame 320 close to the first walking frame 310; a first sliding hole is opened at the end of the first support rod 741 away from the load-bearing beam 400, and a second support leg 742 is slidably connected in the first sliding hole. The second support leg 742 can abut against the bridge deck and drive the second walking frame 320 on the load-bearing beam 400 away from the bridge deck; a first lifting cylinder 743 is fixedly connected in the first sliding hole, and the piston rod of the first lifting cylinder 743 is connected to the second support leg 742 and drives the second support leg 742 to slide.

[0068] refer to Figure 8 and Figure 9 , a sliding support mechanism 600 is provided on the load-bearing beam 400, and the sliding support mechanism 600 includes two slide rails 610 fixedly connected to the load-bearing beam 400 near the side wall of the bridge deck. The two slide rails 610 are arranged along the length direction of the load-bearing beam 400 and are parallel to each other; the two slide rails 610 are slidably connected to a first sliding seat 620, and a sliding assembly 630 is provided on the first sliding seat 620. The sliding assembly 630 includes a plurality of rollers 631 rotatably connected to the first sliding seat 620, and the rollers 631 abut against the slide rails 610. A sliding motor 632 is fixedly connected to the first sliding seat 620, and the sliding motor 632 is connected to the rollers 631 and drives the rollers 631 Rotate to achieve the sliding of the first sliding seat 620; the first sliding seat 620 is rotatably connected to the side away from the load-bearing beam 400 with two second support rods 640, and the first sliding seat 620 is fixedly connected to a flip motor 670, and the output shaft of the flip motor 670 is keyed to a fifth transmission gear 680, and the rotating ends of the two second support rods 640 are coaxially connected to a sixth transmission gear 690 that meshes with the fifth transmission gear 680; when the flip motor 670 is started, the flip motor 670 can drive the fifth transmission gear 680 to rotate, the fifth transmission gear 680 drives the sixth transmission gear 690 to rotate, and the sixth transmission gear 690 drives the two second support rods 640 to rotate.

[0069] refer to Figure 8 and Figure 9 The two second support rods 640 are arranged in parallel and a second sliding hole is opened on the side wall away from the first sliding seat 620. The second sliding hole is opened along the length direction of the second support rod 640. The third support leg 650 is slidingly connected in the second sliding hole, and the third support leg 650 can abut against the bridge deck; the second lifting cylinder 660 is fixedly connected in the second sliding hole, and the piston rod of the second lifting cylinder 660 is fixedly connected to the third support leg 650 and drives the third support leg 650 to slide.

[0070] refer to Figure 2 and Figure 10 The load-bearing beam 400 is provided with a suspension mechanism 500, which includes two fixed rails 510 fixedly connected to the side wall of the bridge away from the load-bearing capacity. Two bearing seats 520 are provided on the two fixed rails 510. A plurality of driving wheels 530 are rotatably connected to the bearing seats 520. The driving wheels 530 roll on the fixed rails 510. A reduction motor 540 is provided on the bearing seats 520 for driving the driving wheels 530 to rotate. The reduction motor 540 is connected to the driving wheels 530 and drives the driving wheels 530 to rotate; a suspension assembly 55 is provided on the bearing seats 520. 0, the suspension assembly 550 includes a reducer 551 fixedly connected to the bearing seat 520, and two reels 552 are rotatably connected to the bearing seat 520. The output shaft of the reducer 551 is connected to the reel 552 and drives the reel 552 to rotate; steel wire ropes are wound around the two reels 552, and the steel wire ropes on the two reels 552 are respectively located on both sides of the bearing beam 400 and are fixedly connected to a suspension seat 553, and two suspension bolts 554 are detachably connected to the suspension seat 553. The suspension bolts 554 can pass through the bridge deck or beam and drive the bridge deck or beam to move through nuts.

[0071] refer to Figure 11 and Figure 12 , an alignment mechanism 920 is provided on the outward moving frame 912, and the alignment mechanism 920 includes two positioning rods 922 slidingly connected to the outward moving frame 912, the axes of the two positioning rods 922 are parallel to the axis of the support frame 911, and the ends of the positioning rods 922 are fixedly connected to a mounting frame 924, and a plurality of alignment rollers 921 are rotatably connected to the mounting frame 924, and the rotation direction of the alignment rollers 921 is consistent with the movement direction of the bridge deck or the beam; a rotating assembly is provided on the mounting frame 924, and the rotating assembly includes a rotating motor 925, and the rotating motor 925 is fixedly connected to the mounting frame 924, A seventh transmission gear 926 is key-connected to the output shaft of the rotating motor 925, and an eighth transmission gear 927 is coaxially connected to the alignment roller 921, and the seventh transmission gear 926 is meshed with the eighth transmission gear 927; when the rotating motor 925 is started and drives the seventh transmission gear 926 to rotate, the seventh transmission gear 926 drives the eighth transmission gear 927 to drive the alignment roller to rotate; an adjusting component 923 is provided on the outward moving frame 912, and the adjusting component 923 is an adjusting cylinder, which is fixedly connected to the outward moving frame 912 and connected to the positioning rod 922 and drives the positioning rod 922 to slide.

[0072] refer to Figure 2 and Figure 13, an auxiliary mechanism 930 is provided on the support frame 911, and the auxiliary mechanism 930 includes a mounting block 936. Each support frame 911 is fixedly connected to two mounting blocks 936. The two mounting blocks 936 on each support frame 911 are vertically arranged and are respectively located on both sides of the positioning rod 922. A third sliding hole is opened at one end of the mounting block 936 away from the support frame 911, and a connecting rod 937 is slidingly connected in the third sliding hole. A telescopic spring 938 is fixedly connected in the third sliding hole. The telescopic spring 938 is connected to the connecting rod 937 and drives the connecting rod 937 away from the mounting block 936. An auxiliary wheel 931 is rotatably connected to the connecting rod 937. The height of 37 is higher than the height of the positioning rod 922 and is located on the side of the positioning rod 922 close to the outward moving frame 912. The auxiliary wheel 931 can abut against the bridge deck or the beam; a power assembly 932 is provided on the mounting block 936, and the power assembly 932 includes a power motor 933, and a third transmission gear 934 is keyed on the output shaft of the power motor 933. A fourth transmission gear 935 is coaxially connected to the auxiliary wheel 931, and the third transmission gear 934 is engaged with the fourth transmission gear 935; the power motor 933 is started and drives the third transmission gear 934 to rotate, and the third transmission gear 934 drives the fourth transmission gear 935 to drive the auxiliary wheel 931 to rotate.

[0073] The implementation principle of the bridge demolition equipment on the bridge of the embodiment of the present application is as follows: when dismantling the bridge, the bridge deck is first cleaned, and then the bridge demolition machine 100 and the transport vehicle 200 are driven onto the bridge, and the driving motor 341 is started. The driving motor 341 drives the driving gear 342 to rotate, and the driving gear 342 drives the driven gear 343 to rotate, and the driven gear 343 drives the walking wheel 330 to move toward the starting position of the bridge demolition. After the load-bearing beam 400 moves into place, the first telescopic oil cylinder 730 drives the first support leg 720 to press against the bridge deck, and then the first lifting oil cylinder 743 drives the second support leg 720 to press against the bridge deck. The leg 742 is pressed against the bridge deck, and the supporting oil cylinder is used to drive the outward moving frame 912 and the supporting frame 911 to contact the bridge deck, and then the outward moving cylinder 820 is used to drive the sliding frame 810 to slide, and the sliding frame 810 drives the walking wheel 330 on the first walking frame 310 to move to the outside of the bridge deck, and then the cutting mechanism is used to first cut the wet joint of the bridge deck between the outward moving frame 912 and the first supporting leg 720, and then the suspension bolt 554 is passed through the bridge deck and fixed with a nut, and then the reducer 551 is started, and the reducer 551 drives the wire rope on the drum 552 to rise, so that the bridge deck is separated from the bridge deck.

[0074] Start the transport vehicle 200 and reverse it into the space between the two support frames 911. Use the regulating oil cylinder to drive the positioning rod 922 and the alignment roller 921 to abut against the side wall of the transport vehicle 200. Then put the transport vehicle 200 into neutral gear and start the rotating motor 712. The rotating motor 712 drives the alignment roller 921 to rotate through the belt and pulley transmission. The alignment roller 921 drives the transport vehicle 200 to move to the bottom of the load beam 400. Then stop the rotating motor 712 and use the regulating oil cylinder to drive the alignment roller 921 and the transport vehicle 200. Separation; then start the reduction motor 540, the reduction motor 540 drives the driving wheel 530 to rotate, and the driving wheel 530 drives the bearing seat 520 and the bridge deck to move closer to the transport vehicle 200. In order to lower the center of gravity, the bridge deck can be abutted against the auxiliary wheel 931, and then start the power motor 933 to transmit and drive the auxiliary wheel 931 to rotate through the third transmission gear 934 and the fourth transmission gear 935. The auxiliary wheel 931 drives the bridge deck to slide, so that part of the gravity is applied to the support frame 911, reducing the shaking of the bridge deck. The center of gravity can be adjusted until the bridge deck moves above the transport vehicle 200, and then the bridge deck is slowly lowered so that the bridge deck presses the auxiliary wheel 931 toward the bridge deck, and the bridge deck falls on the transport vehicle 200, and then the connection between the suspension bolts 554 and the bridge deck is released, and the transport vehicle 200 is started to transport the bridge deck away from the load-bearing beam 400, and the above steps are repeated, and the bridge deck is cut and removed multiple times until a complete beam is exposed, and then the position of the first support leg 720 and the second support leg 742 is adjusted so that the first support leg 720 and the second support leg 742 span the two piers, and then the connection between the adjacent beams is released, and the suspension bolts 554 are passed through the beam and fixed with nuts, and then the reducer 551 is used to drive the wire rope on the drum 552 to wind, so that the beam is separated from the pier, and then the bearing seat 520 is used to slowly drive the beam toward the transport vehicle 200, or part of the weight of the beam can be placed on the auxiliary wheel 931, and the auxiliary wheel 931 is used to assist in driving the beam toward the transport vehicle 200, thereby completing the placement and removal of the beam.

[0075] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bridge dismantling device, characterized in that: The invention comprises a bridge demolition machine (100) and a transport vehicle (200), wherein the bridge demolition machine (100) comprises a walking mechanism (300), a load-bearing beam (400), a suspension mechanism (500), a sliding support mechanism (600) and a fixed support mechanism (700), wherein the walking mechanism (300) is arranged on the load-bearing beam (400) and is used to drive the load-bearing beam (400) to move along the bridge deck, the suspension mechanism (500) is slidably connected to the load-bearing beam (400) and is used to suspend the bridge deck or crossbeam, the sliding support mechanism (600) is slidably arranged on the load-bearing beam (400), the fixed support mechanism (700) is arranged at one end of the load-bearing beam (400), and the sliding support mechanism (600) and the fixed support mechanism (700) cooperate to stabilize the load-bearing beam (400); the transport vehicle (200) is located on the undemolished bridge deck and is used to receive the bridge deck or crossbeam transported by the suspension mechanism (500); The load-bearing beam (400) is provided with an outward expansion support mechanism (910), which is used for temporarily supporting the load-bearing beam (400) and for the transport vehicle (200) to transport the bridge deck or beam; the load-bearing beam (400) is provided with an outward movement mechanism (800), which includes a sliding frame (810) and an outward movement oil cylinder (820); the load-bearing beam (400) is provided with a first traveling frame (310) at one end thereof, and two sliding frames (810) are slidably provided, and the first traveling frame (310) and the sliding frame (810) are connected; the load-bearing beam (400) is provided with two outward movement oil cylinders (820), which are respectively connected to the two sliding frames (810) and drive the two sliding frames (810) to move away from or towards each other; The outward expansion support mechanism (910) includes a support frame (911), an outward moving frame (912) and a support assembly (913). Two outward moving frames (912) are provided on the load-bearing beam (400) for sliding in the vertical direction. The two outward moving frames (912) both protrude from both sides of the bridge deck and form a space between the side walls close to each other for the bridge deck or the crossbeam to pass through. The support frame (911) is provided on the outward moving frame (912) and extends to the bridge deck for supporting the outward moving frame (912). The support assembly (913) is provided on the load-bearing beam (400). The support assembly (913) is connected to the outward moving frame (912) and drives the outward moving frame (912) to slide.

2. The bridge dismantling equipment according to claim 1, characterized in that: The walking mechanism (300) comprises a first walking frame (310), a second walking frame (320), walking wheels (330) and a driving assembly (340); one end of the load-bearing beam (400) is provided with two first walking frames (310), and the two first walking frames (310) are respectively located on both sides of the load-bearing beam (400); the other end of the load-bearing beam (400) is provided with two second walking frames (320), the first walking frame (310) and the second walking frame (320) are both provided with the walking wheels (330), and the first walking frame (310) and the second walking frame (320) are both provided with the driving assembly (340), and the driving assembly (340) is used to drive the walking wheels (330) to rotate.

3. The bridge dismantling equipment according to claim 1, characterized in that: The outward moving frame (912) is provided with an alignment mechanism (920), and the alignment mechanism (920) includes an alignment roller (921), a positioning rod (922) and an adjustment component (923). Each outward moving frame (912) is slidably provided with the positioning rod (922), and the side walls of the two positioning rods (922) close to each other are rotatably connected with the alignment roller (921). The alignment roller (921) abuts against the side wall of the transport vehicle (200), so that the transport vehicle (200) can be quickly aligned with the load-bearing beam (400).

4. The bridge dismantling equipment according to claim 3, characterized in that: The adjustment assembly (923) includes an adjustment oil cylinder, which is arranged on the outward moving frame (912) and connected to the positioning rod (922). The adjustment oil cylinder drives the alignment roller (921) connected to the positioning rod (922) to slide.

5. The bridge dismantling equipment according to any one of claims 1 to 3, characterized in that: An auxiliary mechanism (930) is provided on the support frame (911), and the auxiliary mechanism (930) includes an auxiliary wheel (931). The auxiliary wheel (931) is rotatably provided on the support frame (911), and the rotation direction of the auxiliary wheel (931) is the same as the movement direction of the bridge deck or the crossbeam, and supports the bridge deck or the crossbeam.

6. The bridge dismantling equipment according to claim 5, characterized in that: The auxiliary mechanism (930) further includes a power assembly (932), wherein the power assembly (932) includes a power motor (933), and the power motor (933) is connected to the auxiliary wheel (931) and drives the auxiliary wheel (931) to rotate.

7. A bridge dismantling method using the bridge dismantling equipment according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Construction preparation, preparation of construction equipment and tools; S2. Demolition work, S2.

1. Demolition of the bridge deck: Move the construction equipment along the bridge deck to the starting point of the demolition work, cut the bridge deck, and then use the construction equipment to lift the bridge deck to the undemolished bridge deck for transportation; S2.2, beam removal: remove the connections between adjacent beams with tools, and use construction equipment to transport the beams to the unremoved bridge deck for transportation; S2.3, dismantling the bridge piers: after the beams are dismantled, dismantle the bridge piers; S3. Cleaning work: clean the construction road surface and remove construction waste.

8. The method for dismantling a bridge on a bridge according to claim 7, characterized in that: In step S2, the bridge deck and beams are dismantled from the middle of the bridge toward both ends.

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