Split-combined bridge erector and its usage method

Abstract

The present invention discloses a separable bridge erecting machine, which includes a suspension, a longitudinal bottom rail, a first support seat, a second support seat and at least two overhead cranes. The longitudinal bottom rail is arranged at the bottom of the tunnel and extends outside the tunnel entrance. The overhead cranes are arranged on the suspension. The suspension includes a rear frame, a front frame and a docking assembly. The rear frame and the front frame are detachably connected through the docking assembly. The front end of the rear frame is movably supported on the longitudinal bottom rail through the second support seat, and a first leg is provided at the rear end. The rear end of the front frame is movably supported on the longitudinal bottom rail through the first support seat, and a second leg is provided at the front end. The second leg is supported on the pier in front of the abutment. A method for using the separable bridge erecting machine is also disclosed, and the steps include: lifting and hoisting the beam slab; transporting the beam slab; disconnecting the suspension; transverse movement of the front frame; transverse return of the front frame; merging the suspension; and returning each overhead crane. The separable bridge erecting machine and its using method can improve the construction efficiency and safety, reduce the construction cost and be disassembled to meet the transverse movement requirements.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, and particularly to a separable and combinable bridge erecting machine and its using method. Background Art

[0002] At present, highway bridge erecting machines are widely used in the field of bridge construction in China, and there are many structural forms of bridge erecting machines according to different working conditions. A double-beam highway bridge erecting machine generally consists of a suspension, a hoisting trolley, an electrical system, a hydraulic system, and other safety devices. There is a limitation for this type of highway bridge erecting machine: there must be enough space required for the whole machine to traverse horizontally when hoisting the side beam. In the case of adjacent bridge-tunnel working conditions, the distance between the tunnel entrance and the abutment is not enough to meet the sufficient space required for the whole machine to traverse horizontally, and the first-span side beam and the adjacent side beam slabs cannot be erected by the bridge erecting machine.

[0003] In this case, only other installation schemes for side beam slabs can be adopted, such as hoisting by a truck crane or a crawler crane (if the construction site permits), dragging and traversing, etc. The efficiency of adopting dragging and traversing is low and the safety is poor. Adopting a large-tonnage truck crane or crawler crane has high requirements for equipment resources and increases the cost. In short, adopting other schemes requires additional investment in many aspects such as construction scheme design, measures, site, equipment, etc., increasing the cost and having low efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a separable and combinable bridge erecting machine and its using method that can improve construction efficiency and safety, can reduce construction costs, and can be disassembled to meet the traversing requirements.

[0005] To solve the above technical problem, the present invention adopts the following technical solutions:

[0006] A separable and combinable bridge erecting machine includes a suspension, a longitudinal bottom rail, a first support seat that can move horizontally, a second support seat that can be adjusted vertically, and at least two trolleys for transporting beam slabs. The longitudinal bottom rail is arranged at the bottom of the tunnel and extends outside the tunnel entrance. The trolleys are arranged on the suspension and can move along the suspension. The suspension includes a rear frame, a front frame, and a docking assembly. The rear frame and the front frame are detachably connected through the docking assembly. The front end of the rear frame is movably supported on the longitudinal bottom rail through the second support seat, and a first leg that can be adjusted vertically is arranged at the rear end. The rear end of the front frame is movably supported on the longitudinal bottom rail through the first support seat, and a second leg that can move horizontally is arranged at the front end. The second leg supports on the pier in front of the abutment.

[0007] As a further improvement of the above technical solution:

[0008] The docking assembly includes a connecting plate and a connecting pin. The two ends of the connecting plate are respectively fixed on the rear frame and the front frame through the connecting pin.

[0009] A rear rail is provided on the rear frame, a front rail is provided on the front frame, and a detachable movable rail is docked between the rear rail and the front rail. The rear rail, the movable rail and the front rail are connected to form a guide rail for the overhead crane to slide.

[0010] The movable rail is embedded between the rear rail and the front rail.

[0011] A first cross rail is supported on the longitudinal bottom rail. A first transverse traveling wheel is provided at the bottom of the first support seat, and the first transverse traveling wheel is arranged on the first cross rail.

[0012] A first support wheel is provided at the top of the first support seat, and the front frame is supported on the first support wheel.

[0013] A second support wheel is provided at the top of the second support seat, and the rear frame is supported on the second support wheel.

[0014] A second transverse traveling wheel is provided at the bottom of the second leg. A second cross rail is provided on the bridge pier, and the second transverse traveling wheel is arranged on the second cross rail.

[0015] Both the rear frame and the front frame include a pair of parallel main beams and cross braces fixedly connected between the pair of main beams. The overhead crane straddles the parallel main beams.

[0016] A method for using the above-mentioned split-type bridge erecting machine includes the following steps:

[0017] S1: Beam and slab hoisting. Move each overhead crane to the rear frame and arrange them at intervals, and hoist a beam and slab on each overhead crane.

[0018] S2: Beam and slab transportation. Each overhead crane moves along the suspension to the front frame of the suspension, and transports the beam and slab between the abutment and the bridge pier.

[0019] S3: Suspension disconnection. Remove the docking component and disconnect the rear frame and the front frame.

[0020] S4: Front frame transverse movement. Transversely move the front frame to the installation position of the beam and slab, and lower the beam and slab to the abutment and the bridge pier.

[0021] S5: Front frame transverse return.

[0022] S6: Suspension combination. Adjust the height of the rear frame through the first leg and the second support seat to align the rear frame with the front frame, and then connect the rear frame and the front frame through the docking component.

[0023] S7: Each overhead crane returns. Each overhead crane returns along the suspension to the rear frame to hoist the next beam and slab.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The split - combined bridge erecting machine of the present invention includes a suspension, a longitudinal bottom rail, a first support seat that can move horizontally, a second support seat that can be adjusted vertically, and at least two overhead cranes for transporting beam - slabs. The longitudinal bottom rail is arranged at the bottom of the tunnel and extends outside the tunnel entrance. The overhead cranes are arranged on the suspension and can move along the suspension. The suspension includes a rear frame, a front frame, and a docking assembly. The rear frame and the front frame are detachably connected through the docking assembly. The front end of the rear frame is movably supported on the longitudinal bottom rail through the second support seat, and the rear end is provided with a first leg that can be adjusted vertically. The rear end of the front frame is movably supported on the longitudinal bottom rail through the first support seat, and the front end is provided with a second leg that can move horizontally. The second leg supports on the pier in front of the abutment. Since the rear frame and the front frame are detachably connected through the docking assembly, and both the first support seat and the second leg can move horizontally, after the overhead crane transports the beam - slab between the abutment and the pier, the rear frame and the front frame can be separated, enabling the front frame to move horizontally independently to adjust the horizontal position of the beam - slab. At this time, the front frame is not affected by the position of the rear frame, thus avoiding the tunnel from affecting the horizontal movement range of the front frame and meeting the requirement for adjusting the horizontal position of the beam - slab. That is to say, even if the distance between the tunnel entrance and the abutment is not sufficient to provide enough space for the horizontal movement of the front frame, it does not prevent the front frame from moving horizontally independently after being separated from the rear frame. Since the split - combined bridge erecting machine can realize the construction of beam - slabs at the tunnel entrance through the splitting and combining of the suspension, it greatly improves the construction efficiency and safety, and reduces the construction cost.

[0026] The using method of the split - combined bridge erecting machine of the present invention includes the following steps: S1: Hoisting of beam - slabs. Move each overhead crane to the rear frame and arrange them at intervals, and hoist a beam - slab on each overhead crane; S2: Transportation of beam - slabs. Each overhead crane moves along the suspension to the front frame of the suspension and transports the beam - slab between the abutment and the pier; S3: Splitting of the suspension. Remove the docking assembly and separate the rear frame and the front frame; S4: Horizontal movement of the front frame. Move the front frame horizontally to the installation position of the beam - slab and lower the beam - slab onto the abutment and the pier; S5: Horizontal return of the front frame; S6: Combining of the suspension. Adjust the height of the rear frame through the first leg and the second support seat to align the rear frame with the front frame, and then connect the rear frame and the front frame through the docking assembly; S7: Return of each overhead crane. Each overhead crane moves along the suspension back to the rear frame to hoist the next beam - slab. The invention can meet the horizontal movement requirement during construction through the splitting operation of the suspension. In a narrow space of the tunnel, the bridge erecting machine can be split for hoisting and placing the beam - slab without additional tools, which not only ensures the hoisting safety, saves costs, but also greatly expands the applicability of the highway bridge erecting machine. Description of the Drawings

[0027] Figure 1 It is the front - view structural schematic diagram of the split - combined bridge erecting machine of the present invention.

[0028] Figure 2 It is the top - view structural schematic diagram of the split - combined bridge erecting machine of the present invention.

[0029] Figure 3 It is a top view structural schematic diagram of the separable and combinable bridge erecting machine of the present invention (suspension segmented state).

[0030] Figure 4 It is a side view structural schematic diagram of the separable and combinable bridge erecting machine of the present invention.

[0031] Figure 5 It is Figure 1 an enlarged view of part A in

[0032] Figure 6 It is a structural schematic diagram of the movable track of the separable and combinable bridge erecting machine of the present invention.

[0033] Figure 7 It is Figure 1 an enlarged view of part B in

[0034] Figure 8 It is a structural schematic diagram of the first support seat of the separable and combinable bridge erecting machine of the present invention.

[0035] Figure 9 It is a side view structural schematic diagram of the second support seat of the separable and combinable bridge erecting machine of the present invention.

[0036] Figure 10 It is a front view structural schematic diagram of the second support seat of the separable and combinable bridge erecting machine of the present invention.

[0037] Each label in the figure represents:

[0038] 1. Suspension; 11. Rear frame; 111. Rear track; 112. Cross connection; 113. Main beam; 12. Front frame; 121. Front track; 13. Docking assembly; 131. Connecting plate; 132. Connecting pin; 14. Movable track; 121. Front track; 14. Movable track; 15. Second leg; 2. Longitudinal bottom track; 21. First cross track; 3. First support seat; 31. First transverse traveling wheel; 32. First support wheel; 4. Second support seat; 41. Second support wheel; 42. Lifting oil cylinder; 5. Overhead crane; 6. Beam slab; 7. Abutment; 71. Pier; 151. Second transverse traveling wheel; 8. Second cross track; 9. First leg. Detailed implementation manners

[0039] The following will further describe the present invention in detail with reference to the specification drawings and specific embodiments.

[0040] Figures 1 to 10An embodiment of the separable bridge erecting machine of the present invention is shown. This separable bridge erecting machine includes a suspension 1, a longitudinal bottom rail 2, a first support seat 3 that can move horizontally, a second support seat 4 that can be adjusted in height, and at least two overhead cranes 5 for transporting beam slabs 6. The longitudinal bottom rail 2 is arranged on the ground at the bottom of the tunnel and extends to one side of the abutment 7 outside the tunnel entrance. The overhead crane 5 is arranged on the suspension 1 and can move along the suspension 1. The suspension 1 includes a rear frame 11, a front frame 12, and a docking assembly 13. The rear frame 11 and the front frame 12 are detachably connected through the docking assembly 13. The front end of the rear frame 11 is movably supported on the longitudinal bottom rail 2 through the second support seat 4, and the rear end is provided with a first leg 9 that can be adjusted in height. The rear end of the front frame 12 is movably supported on the longitudinal bottom rail 2 through the first support seat 3, and the front end is provided with a second leg 15 that can move horizontally. The second leg 15 is supported on the pier 71 in front of the abutment 7. Since the rear frame 11 and the front frame 12 are detachably connected through the docking assembly 13, and both the first support seat 3 and the second leg 15 can move horizontally, after the overhead crane 5 transports the beam slab 6 between the abutment 7 and the pier 71, the rear frame 11 and the front frame 12 can be separated, so that the front frame 12 can independently move horizontally to adjust the horizontal position of the beam slab 6. At this time, the front frame 12 is not affected by the position of the rear frame 11, thus avoiding the tunnel from affecting the horizontal movement range of the front frame 12 and meeting the adjustment requirements for the horizontal position of the beam slab 6. That is to say, even if the distance between the tunnel entrance and the abutment 7 is not sufficient to provide enough space for the horizontal movement of the front frame 12, it does not prevent the front frame 12 from independently moving horizontally after being separated from the rear frame 11. Since the separable bridge erecting machine can realize the construction of the beam slab 6 at the tunnel entrance through the separation and combination of the suspension 1, the construction efficiency and safety are greatly improved, and the construction cost is reduced.

[0041] In this embodiment, as Figure 1 and Figure 5 shown, the docking assembly 13 includes a connecting plate 131 and a connecting pin 132. Both ends of the connecting plate 131 are respectively fixed on the rear frame 11 and the front frame 12 through the connecting pin 132. Specifically, positioning pins are provided on both the rear frame 11 and the front frame 12, and positioning holes are provided at both ends of the connecting plate 131. The positioning pin on the rear frame 11 is inserted into the positioning hole at one end of the connecting plate 131, and the positioning pin of the front frame 12 is inserted into the positioning hole at the other end of the connecting plate 131. When installing the connecting plate 131, first align the positioning holes on the connecting plate 131 with the corresponding positioning pins, and then insert each positioning pin into each positioning hole to position the connecting plate 131. Then, install the connecting pin 132. Multiple docking assemblies 13 can be provided, and the number is selected according to the connection strength between the rear frame 11 and the front frame 12.

[0042] In this embodiment, a rear rail 111 is provided on the rear frame 11, a front rail 121 is provided on the front frame 12, and a detachable movable rail 14 is docked between the rear rail 111 and the front rail 121. The rear rail 111, the movable rail 14 and the front rail 121 are connected to form a guide rail for the overhead crane 5 to slide. Specifically, the docking ends of the rear rail 111 and the end of the movable rail 14 facing the front rail 121 are both convexly formed with V-shaped fitting parts, and the docking ends of the front rail 121 and the end of the movable rail 14 facing the rear rail 111 are both concavely formed with V-shaped fitting grooves, and each fitting part is embedded in the corresponding fitting groove.

[0043] In this embodiment, as Figure 1 , Figure 2 and Figure 8 shown, a first cross rail 21 is supported on the longitudinal bottom rail 2, and a first lateral traveling wheel 31 is provided at the bottom of the first support seat 3. The first lateral traveling wheel 31 is arranged on the first cross rail 21. Specifically, a driving motor for driving the first lateral traveling wheel 31 to travel is further provided on the first support seat 3. After the front frame 12 and the rear frame 11 are disconnected, the driving motor drives the first lateral traveling wheel 31 to travel to drive the front frame 12 to move laterally.

[0044] In this embodiment, as Figure 8 shown, a first support wheel 32 is provided at the top of the first support seat 3, and the front frame 12 is supported on the first support wheel 32. Since the front frame 12 is supported on the first support wheel 32, the first support seat 3 can longitudinally adjust its position relative to the first support seat 3 to reach the optimal support position; and during the erection process of the suspension 1, it can also longitudinally move relative to the first support seat 3 to adjust the position.

[0045] In this embodiment, as Figure 1 , Figure 9 and Figure 10 shown, a second support wheel 41 is provided at the top of the second support seat 4, and the rear frame 11 is supported on the second support wheel 41. Before the rear frame 11 and the front frame 12 are disconnected, the overhead crane 5 can be used to hoist the second support seat 4 to an appropriate position away from the docking end face, such as 200 mm away from the docking end face. As Figure 10 shown, the top of the second support seat 4 is liftable. An elevating oil cylinder 42 is provided on the second support seat 4. The bottom end of the elevating oil cylinder 42 is fixed to the bottom of the second support seat 4, and the telescopic end of the elevating oil cylinder 42 supports on the top of the second support seat 4 for adjusting the lifting position of the top of the second support seat 4.

[0046] In this embodiment, as Figure 1 , Figure 4 and Figure 7As shown, a second transverse traveling wheel 151 is provided at the bottom of the second leg 15, a second transverse rail 8 is provided on the pier 71, and the second transverse traveling wheel 151 is arranged on the second transverse rail 8. Specifically, a driving motor is also provided on the second leg 15 to drive the second transverse traveling wheel 151 to travel, facilitating the transverse movement of the front frame 12.

[0047] In this embodiment, as Figure 2 , Figure 3 and Figure 4 shown, both the rear frame 11 and the front frame 12 include a pair of parallel main beams 113 and cross braces 112 fixedly connected between the pair of main beams 113. The overhead crane 5 straddles the parallel main beams 113. The two pairs of parallel main beams 113 are connected by connecting plates 131 at the docking joints to form two parallel beam bodies. Guide rails formed by connecting a rear rail 111, a movable rail 14, and a front rail 121 are provided at the top of each beam body. A pair of pulleys are provided at the bottom of the overhead crane 5, and the pair of pulleys respectively slide on the guide rails of the two beam bodies.

[0048] A method of using a split-type bridge erecting machine (construction method) includes the following steps:

[0049] S1: Hoisting (feeding) of the beam slab 6. Move each overhead crane 5 to the rear frame 11 and arrange them at intervals, and hoist a beam slab 6 onto each overhead crane 5.

[0050] S2: Transportation of the beam slab 6. Each overhead crane 5 moves along the suspension 1 to the front frame 12 of the suspension 1, and transports the beam slab 6 between the abutment 7 and the pier 71.

[0051] S3: Disconnection of the suspension 1. Remove the docking assembly 13 and disconnect the rear frame 11 and the front frame 12. Specifically, first remove the movable rail 14, pull out the connecting pin 132, and remove the connecting plate 131. At this time, the front frame 12 can work independently to erect the beam slab 6.

[0052] S4: Transverse movement of the front frame 12 (positioning of the beam slab 6). Transversely move the front frame 12 to the installation position of the beam slab 6, and lower the beam slab 6 onto the abutment 7 and the pier 71.

[0053] S5: Transverse return of the front frame 12.

[0054] S6: The suspension 1 is combined. The height of the rear frame 11 is adjusted through the first leg 9 and the second support base 4 to align the rear frame 11 with the front frame 12, and then the rear frame 11 and the front frame 12 are connected through the docking assembly 13. Specifically, the front section of the bridge erecting machine is horizontally moved to align with the rear section, the height of the rear frame 11 is adjusted to be the same as that of the front and rear sections of the bridge erecting machine by using the first leg 9 and the second support base 4, then the connecting plate 131 is fixed between the rear frame 11 and the front frame 12. Finally, the movable rail 14 is placed to dock the rear rail 111 and the front rail 121. At this time, the front and rear sections of the bridge erecting machine are assembled into a whole machine, and operations such as beam feeding, span crossing, and integral beam hoisting and installation can be carried out.

[0055] S7: Each overhead crane 5 returns to its original position. Each overhead crane 5 returns along the suspension 1 to the rear frame 11 for hoisting the next beam slab 6.

[0056] The present invention can meet the horizontal movement requirements of the construction through the disconnection operation of the suspension 1. In the narrow space of the tunnel, the bridge erecting machine can be disassembled for hoisting and placing the beam slab 6 without additional tools, which not only ensures the hoisting safety, saves costs, but also greatly expands the applicability of the highway bridge erecting machine.

[0057] It should be noted that in the present invention, the longitudinal direction refers to the extension direction of the tunnel or the bridge, and the transverse direction refers to the width direction of the tunnel or the bridge. The front in the present invention refers to the side where the tunnel entrance faces the pier 71, and the opposite side is the rear.

[0058] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content within the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical content of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for using a separable bridge erecting machine, characterized in that, the separable bridge erecting machine includes a suspension (1), a longitudinal bottom rail (2), a first support base (3) that can move horizontally, a second support base (4) that can be adjusted in height, and at least two overhead cranes (5) for transporting beam slabs (6). The longitudinal bottom rail (2) is arranged at the bottom of the tunnel and extends outside the tunnel entrance. The overhead cranes (5) are arranged on the suspension (1) and can move along the suspension (1). The suspension (1) includes a rear frame (11), a front frame (12), and a docking assembly (13). The rear frame (11) and the front frame (12) are detachably connected through the docking assembly (13). The front end of the rear frame (11) is movably supported on the longitudinal bottom rail (2) through the second support base (4), and a first support leg (9) that can be adjusted in height is provided at the rear end. The rear end of the front frame (12) is movably supported on the longitudinal bottom rail (2) through the first support base (3), and a second support leg (15) that can move horizontally is provided at the front end. The second support leg (15) supports on the pier (71) in front of the abutment (7). The method for using the separable bridge erecting machine includes the following steps: S1: Hoisting the beam slab (6). Move each overhead crane (5) to the rear frame (11) and arrange them at intervals, and hoist a beam slab (6) on each overhead crane (5); S2: Transporting the beam slab (6). Each overhead crane (5) moves along the suspension (1) to the front frame (12) of the suspension (1), and transports the beam slab (6) between the abutment (7) and the pier (71); S3: Separating the suspension (1). Remove the docking assembly (13) and separate the rear frame (11) and the front frame (12); S4: Transversely moving the front frame (12). Transversely move the front frame (12) to the installation position of the beam slab (6), and lower the beam slab (6) onto the abutment (7) and the pier (71); S5: Transversely returning the front frame (12); S6: Merging the suspension (1). Adjust the height of the rear frame (11) through the first support leg (9) and the second support base (4) to align the rear frame (11) with the front frame (12), and then connect the rear frame (11) and the front frame (12) through the docking assembly (13); S7: Returning each overhead crane (5). Each overhead crane (5) returns along the suspension (1) to the rear frame (11) to hoist the next beam slab (6).

2. The method for using a separable bridge erecting machine according to claim 1, characterized in that: the docking assembly (13) includes a connecting plate (131) and a connecting pin (132). The two ends of the connecting plate (131) are respectively fixed on the rear frame (11) and the front frame (12) through the connecting pin (132).

3. The method for using a separable bridge erecting machine according to claim 1, characterized in that: a rear rail (111) is provided on the rear frame (11), a front rail (121) is provided on the front frame (12), and a detachable movable rail (14) is docked between the rear rail (111) and the front rail (121). The rear rail (111), the movable rail (14), and the front rail (121) are connected to form a guide rail for the overhead crane (5) to slide.

4. The method for using a separable bridge erecting machine according to claim 3, It is characterized in that: The movable track (14) is embedded between the rear track (111) and the front track (121).

5. The using method of the separable bridge erecting machine according to any one of claims 1 to 4, It is characterized in that: A first cross track (21) is supported on the longitudinal bottom track (2), a first transverse traveling wheel (31) is provided at the bottom of the first support seat (3), and the first transverse traveling wheel (31) is arranged on the first cross track (21).

6. The using method of the separable bridge erecting machine according to claim 5, It is characterized in that: A first support wheel (32) is provided at the top of the first support seat (3), and the front frame (12) is supported on the first support wheel (32).

7. The using method of the separable bridge erecting machine according to any one of claims 1 to 4, It is characterized in that: A second support wheel (41) is provided at the top of the second support seat (4), and the rear frame (11) is supported on the second support wheel (41).

8. The using method of the separable bridge erecting machine according to any one of claims 1 to 4, It is characterized in that: A second transverse traveling wheel (151) is provided at the bottom of the second leg (15), a second cross track (8) is provided on the bridge pier (71), and the second transverse traveling wheel (151) is arranged on the second cross track (8).

9. The using method of the separable bridge erecting machine according to any one of claims 1 to 4, It is characterized in that: Both the rear frame (11) and the front frame (12) include a pair of parallel main beams (113) and a cross member (112) fixedly connected between the pair of main beams (113), and the overhead crane (5) straddles the parallel main beams (113).

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