A beam transporting and passing meeting lifting device on bridge and passing meeting method

Abstract

The present invention relates to a meeting and lifting device for transporting beam trucks on a bridge and a meeting method. The lifting device includes: two gantry structures which are arranged on the bridge along the longitudinal bridge direction; a plurality of connecting beams which are used for connecting the two gantry structures; two sets of lifting systems which are respectively arranged in the two gantry structures; and the lifting system is used for hoisting an empty beam truck. The meeting method uses the above-mentioned lifting device to lift the empty beam truck to a high place, so that the heavy-loaded beam truck can pass under it to complete the meeting of beam trucks on the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of railway bridge construction, and particularly to a device for lifting and passing of beam transporting vehicles on a bridge and a passing method. Background Art

[0002] In high-speed railway lines, bridges account for a relatively large proportion. The most economical construction mode for high-speed railway bridges is generally prefabrication in a beam yard, transporting beams by beam transporting vehicles, and erecting beams by beam erecting machines. The land acquisition, construction, reclamation, equipment investment, etc. of the box girder prefabrication yard are extremely costly. To save construction costs, the interval distance between box girder prefabrication yards is relatively large, making the beam transporting time a control factor for the beam transporting and erecting operation, and reducing the efficiency of the beam erecting operation. To make the operation processes of beam transporting and erecting match each other, when the transportation distance is relatively large, two beam transporting vehicles can be used in combination with one beam erecting machine for beam transporting and erecting operations. The width of the high-speed railway line only allows the beam transporting vehicle to pass unidirectionally. To pass in opposite directions, a certain section of the subgrade can be widened as a passing point. Its disadvantage is that the land acquisition and construction costs are high, and the passing point cannot be changed.

[0003] To better solve this problem, the present invention proposes a passing method on a bridge, that is, a passing lifting device is pre-installed at the passing point on the bridge. When the empty beam transporting vehicle returns to the box girder prefabrication yard and arrives at the passing point, the empty beam transporting vehicle is lifted by the passing lifting device. After the fully loaded beam transporting vehicle passes below it, the empty beam transporting vehicle is lowered to the bridge deck to realize the passing operation on the bridge. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for lifting and passing of beam transporting vehicles on a bridge and a passing method, which can realize passing on the bridge, and make the passing point movable, economical and efficient.

[0005] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0006] A device for lifting and passing of beam transporting vehicles on a bridge, which includes:

[0007] Two gantry structures, which are arranged on the bridge along the longitudinal bridge direction;

[0008] Several connecting beams, which are used to connect the two gantry structures;

[0009] Two sets of lifting systems, which are respectively arranged inside the two gantry structures; the lifting systems are used to hoist the empty beam transporting vehicle and lift the empty beam transporting vehicle to a high place or lower it to the bridge deck.

[0010] Further, the gantry structure is an O-shaped closed structure, which includes two upper curved beams, two lower curved beams and two support bases. The two support bases are arranged on the bridge, and the load of the gantry structure is transmitted to the bridge through the support bases; the two support bases are connected by a lower cross beam.

[0011] Furthermore, the cross-section of the support base in the transverse direction of the bridge is foot-shaped, which includes an upper connecting part, a toe part, and a lower connecting part. The toe part gradually becomes shorter, and the lower connecting part is arranged at the end of the toe part, and the lower connecting part is used to connect with the lower cross beam.

[0012] Furthermore, the support base and the lower cross beam are connected by a pin shaft and a split pin hole.

[0013] Furthermore, shoe plates are symmetrically arranged on the left and right sides of the lower cross beam.

[0014] Furthermore, the two lifting systems are a balanced lifting point type lifting system and / or two independent lifting point type lifting systems.

[0015] Furthermore, a balanced lifting point type lifting system is adopted in one gantry structure, and two independent lifting point type lifting systems are adopted in the other gantry structure, forming a four-point lifting and three-point balancing system.

[0016] Furthermore, the balanced lifting point type lifting system includes two winches, two steering pulleys, two fixed pulleys, two balance pulleys, a steel wire rope, and a spreader symmetrically arranged on the left and right sides of the gantry structure; two movable pulleys are symmetrically arranged on the spreader. One end of the steel wire rope is connected to the left winch, and the other end sequentially bypasses the left steering pulley, the left fixed pulley, then bypasses the left movable pulley downward and then bypasses the left fixed pulley upward, and then horizontally passes through the left balance pulley and the right balance pulley. The steel wire rope passes through the ropes at an angle between the two balance pulleys. After the steel wire rope bypasses the right balance pulley and the right fixed pulley, it bypasses the right movable pulley downward and then bypasses the right fixed pulley upward, and then is connected to the right winch through the right steering pulley.

[0017] Furthermore, the independent lifting point type lifting system includes two winches, two steering pulleys, two fixed pulleys, two steel wire rope fixing seats, two steel wire ropes, and a spreader symmetrically arranged on the left and right sides of the gantry structure; two movable pulleys are symmetrically arranged on the spreader; one end of the left steel wire rope is connected to the left winch, and the other end sequentially bypasses the left steering pulley, the left fixed pulley, then bypasses the left movable pulley downward and then bypasses the left fixed pulley upward, and then horizontally extends and is fixedly connected to the right steel wire rope fixing seat; the wire threading method of the right steel wire rope is symmetric to that of the left steel wire rope.

[0018] A method for meeting in passing of transporting beam on bridge is as follows: The meeting-in-passing lifting device is pre-installed at the meeting-in-passing point on the bridge between the box girder prefabrication yard and the bridge span to be erected. When the empty beam transporting vehicle returns and arrives at the meeting-in-passing point, the empty beam transporting vehicle is lifted to a high place by using the meeting-in-passing lifting device. When the heavy beam transporting vehicle arrives at the meeting-in-passing point while transporting the beam, it passes under the empty beam transporting vehicle lifted by the meeting-in-passing lifting device, and the empty beam transporting vehicle is lowered to the bridge deck and returns to the box girder prefabrication yard to transport the beam, completing the meeting-in-passing operation on the bridge.

[0019] The beneficial effects produced by adopting the above technical solution are as follows:

[0020] The beam transporting and passing vehicle lifting device and passing method provided by the present invention realize the passing of beam transporting vehicles on the bridge, overcome the defect of requisitioning land for construction to widen a certain section of the roadbed as a passing point, reduce the cost of constructing the passing point, and the passing point can be moved on the bridge as needed, greatly improving the efficiency of passing operation on the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic side view structure diagram of the passing vehicle lifting device.

[0023] Figure 2 It is a schematic rear vehicle structure diagram of the passing vehicle lifting device.

[0024] Figure 3 It is a schematic structure diagram of a lifting system adopting a balanced lifting point.

[0025] Figure 4 It is a schematic front vehicle structure diagram of the passing vehicle lifting device.

[0026] Figure 5 It is a schematic structure diagram of a lifting system adopting two independent lifting points.

[0027] Figure 6 It is a schematic top view structure diagram of the support base.

[0028] Figure 7 It is a schematic side view structure diagram of the support base.

[0029] Figure 8 It is a schematic top view structure diagram of the lower crossbeam.

[0030] Figure 9 It is a schematic connection structure diagram of the lower crossbeam and the shoe plate.

[0031] Figure 10 It is a schematic diagram of ground lifting of the passing vehicle lifting device.

[0032] Figure 11 It is a schematic rear vehicle diagram of the passing vehicle lifting device in the passing use state.

[0033] Figure 12It is a schematic diagram of the leading vehicle in the meeting state of the meeting lifting device.

[0034] Figure 13 It is a schematic diagram of installing a meeting lifting device at the meeting point on the bridge.

[0035] Figure 14 It is a schematic diagram of the heavy-load beam transport vehicle passing under the empty-load beam transport vehicle during the meeting process.

[0036] Figure 15 It is a schematic diagram of the empty-load beam transport vehicle returning to the box girder prefabrication yard after the meeting.

[0037] Wherein: 1 gantry structure, 1-1 upper curved beam, 1-2 lower curved beam, 1-3 support base, 1-3-1 upper connecting part, 1-3-2 toe part, 1-3-3 support bottom plate, 1-3-4 lower connecting part, 1-3-5 split pin hole; 1-4 lower cross beam; 1-4-1 cross beam connecting part, 1-4-2 pin shaft, 1-4-3 connecting card slot;

[0038] 2 tie beams, 3 shoe plates, 3-1 buckles;

[0039] 4 lifting systems, 4-1 winches, 4-2 fixed pulleys, 4-3 steering pulleys, 4-4 movable pulleys, 4-5 lifting appliances, 4-6 steel wire ropes, 4-7 balance pulleys, 4-8 steel wire rope fixing seats;

[0040] 100 concrete box girders, 200 bridge piers, 300 empty-load beam transport vehicles, 400 heavy-load beam transport vehicles. Specific implementation manners

[0041] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be clearly and completely described below in conjunction with specific embodiments. It should be understood that the orientation or positional relationships indicated by the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are the orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0042] Embodiment 1

[0043] As Figure 1A beam transporting and passing vehicle lifting device on a bridge as shown, which includes two gantry structures 1, several connecting beams 2, and a lifting system 4 arranged inside the gantry structure 1; the gantry structure 1 is arranged on the bridge along the longitudinal direction of the bridge; the connecting beam 2 is used to connect the two gantry structures 1, and both ends of the connecting beam 2 are fixedly connected to the gantry structure 1 through flanges; two sets of the lifting systems 4 are respectively arranged in the two gantry structures 1, which can reduce the self-weight of the lifting device; the lifting system 4 is used to hoist the empty beam transporting vehicle 300 and lift the empty beam transporting vehicle to a high place or lower it to the bridge deck.

[0044] In this embodiment, the two gantry structures 1 are connected by three connecting beams 2. The 3 connecting beams belong to weak connections and are only used to enhance the longitudinal stability of the whole set of equipment.

[0045] As Figure 2 shown, the gantry structure 1 is an O-shaped closed structure, which includes two upper curved beams 1-1, two lower curved beams 1-2 and two support bases 1-3. The two support bases 1-3 are arranged on the bridge, and the load of the gantry structure 1 is transmitted to the bridge through the support bases 1-3; the two support bases 1-3 are connected by a lower cross beam 1-4; adopting this form of gantry structure, it has good mechanical properties and can limit the relative displacement of the two side support bases 1-3. The upper curved beam 1-1, the lower curved beam 1-2 and the support base 1-3 are connected by flanges.

[0046] As Figure 6 and Figure 7 shown, the cross-section of the support base 1-3 in the transverse direction of the bridge is in a foot shape, which includes an upper connecting part 1-3-1, a toe part 1-3-2 and a lower connecting part 1-3-4. The toe part 1-3-2 gradually becomes shorter, and the lower connecting part 1-3-4 is arranged at the end of the toe part 1-3-2. The lower connecting part 1-3-4 is used to connect with the lower cross beam 1-4.

[0047] The lower connecting part 1-3-4 includes a plurality of ear plates, and pin holes 1-3-5 are arranged on the ear plates; As Figure 8As shown, beam connection parts 1-4-1 are provided at both ends of the lower cross beam 1-4. A pin shaft 1-4-2 is fixedly provided on the beam connection part 1-4-1. The support base 1-3 and the lower cross beam 1-4 are connected through the pin shaft 1-4-2 and the split pin hole 1-3-5. The split pin hole 1-3-5 and the pin shaft 1-4-2 are used to clamp the lower cross beam 1-4 and the support base 1-3. This facilitates on-site connection and enables the lower cross beam 1-4 to only bear axial force without bending moment. The vertical opening of the split pin hole 1-3-5 is deep enough for the lower cross beam 1-4 to contact the concrete box girder 100, so that the load of the beam transport vehicle borne by the lower cross beam 1-4 is directly transmitted to the top surface of the concrete beam and will not be transmitted to the support base; the split pin hole 1-3-5 opens upward so that the reaction force of the support base 1-3 will not be transmitted to the lower cross beam. The lower cross beam 1-4 is floating on the top surface of the concrete box girder, and the load it bears is the tire pressure when the beam transport vehicle passes; the load of the gantry structure is transmitted to the concrete box girder through the support base 1-3.

[0048] The support points of each gantry structure 1 are two support bases 1-3. The upper connecting part 1-3-1 at the upper end is connected to the lower curved beam 1-2 through a flange. The toe part 1-3-2 is supported on the top surface of the concrete box girder. The longitudinal bridge direction of the toe part of the support base is set to have a sufficient length to reduce the value of the uniform reaction force acting on the concrete bridge deck and increase the longitudinal stability of a single gantry at the same time. A support bottom plate 1-3-3 is provided on the bottom surface of the toe part 1-3-2.

[0049] As Figure 1 and Figure 9 As shown, shoe plates 3 are symmetrically arranged on the left and right sides of the lower cross beam 1-4 to facilitate the beam transport vehicle to cross over the lower cross beam 1-4. Connection card slots 1-4-3 are provided on both sides of the lower cross beam 1-4. A buckle 3-1 adapted to the connection card slot 1-4-3 is provided on the shoe plate 3, and the buckle 3-1 is clamped with the connection card slot 1-4-3.

[0050] The lifting systems 4 in the two gantry structures 1 are a balanced hoisting point type lifting system and / or two independent hoisting point type lifting systems; preferably, a balanced hoisting point type lifting system is adopted in one gantry structure 1, and a two independent hoisting point type lifting system is adopted in the other gantry structure to form a four-point lifting and three-point balancing system.

[0051] As Figure 2 and Figure 3As shown in the figure, the balanced hoisting point type hoisting system includes two winches 4-1, two steering pulleys 4-3, two fixed pulleys 4-2, two balance pulleys 4-7 symmetrically arranged on the left and right sides of the gantry structure 1, a steel wire rope 4-6 and a spreader 4-5; two movable pulleys 4-4 are symmetrically arranged on the spreader 4-5. One end of the steel wire rope 4-6 is connected to the left winch 4-1, and the other end successively bypasses the left steering pulley 4-3 and the left fixed pulley 4-2, then bypasses the left movable pulley 4-4 downward and then bypasses the left fixed pulley 4-2 upward, and then horizontally passes through the left balance pulley 4-7 and the right balance pulley 4-7. The steel wire rope 4-6 passes through the ropes at an angle between the two balance pulleys 4-7. The steel wire rope bypasses the two balance pulleys 4-7 in a "└┐" shaped (rotated 90°) broken line to achieve the balance of the spreader 4-5. After the steel wire rope 4-6 bypasses the right balance pulley 4-3 and the right fixed pulley 4-2, it bypasses the right movable pulley 4-4 downward and then bypasses the right fixed pulley 4-2 upward, and then is connected to the right winch 4-1 through the right steering pulley 4-3. The two winches 4-1 are connected in series by a steel wire rope to form a balanced hoisting point.

[0052] As Figure 4 and Figure 5 shown in the figure, the independent hoisting point type hoisting system includes two winches 4-1, two steering pulleys 4-3, two fixed pulleys 4-2, two steel wire rope fixing seats 4-8, two steel wire ropes 4-6 and a spreader 4-5 symmetrically arranged on the left and right sides of the gantry structure 1; two movable pulleys 4-4 are symmetrically arranged on the spreader 4-5; one end of the left steel wire rope 4-6 is connected to the left winch 4-1, and the other end successively bypasses the left steering pulley 4-3 and the left fixed pulley 4-2, then bypasses the left movable pulley 4-4 downward and then bypasses the left fixed pulley 4-2 upward, and then horizontally extends and is fixedly connected to the right steel wire rope fixing seat 4-8; the wire rope threading method of the right steel wire rope is symmetrical to that of the left steel wire rope; the two wire ropes are independent of each other to form two independent hoisting points.

[0053] As Figure 10 , Figure 11 and Figure 12 shown in the figure, when the empty beam transport vehicle 300 returns to the box girder prefabrication yard and passes through the meeting point, the spreader of the meeting point lifting device descends. There are 4 lifting lugs provided on both sides of the main beam of the beam transport vehicle. The spreader 4-5 is connected to the lifting lugs, and then the lifting system lifts the empty beam transport vehicle 300 to a high place. At this time, the heavy beam transport vehicle 400 carrying the concrete box girder 100 passes under the empty beam transport vehicle 300, and then the empty beam transport vehicle 300 is placed on the ground to complete the meeting on the bridge.

[0054] Embodiment 2

[0055] See Figure 13 , Figure 14 andFigure 15 , this embodiment discloses a method for passing loaded girder carriers on a bridge, which includes the following steps:

[0056] Pre-install the passing lifting device as described in Embodiment 1 in the drawing at the passing point on the bridge between the box girder prefabrication yard and the bridge span to be erected. When the empty girder carrier 300 returns and arrives at the passing point, use the passing lifting device to lift the empty girder carrier 300 to a high position. Wait for the loaded girder carrier 400 to transport the girder to the passing point, pass under the empty girder carrier 300 lifted by the passing lifting device, lower the empty girder carrier 300 to the bridge deck, and return to the box girder prefabrication yard to transport the girder, thus completing the passing operation on the bridge.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A beam transporting and passing meeting lifting device on a bridge, characterized in that, It includes: Two gantry structures (1), which are arranged on the bridge along the longitudinal direction of the bridge; Several connecting beams (2), which are used to connect the two gantry structures (1); Two sets of lifting systems (4), which are respectively arranged inside the two gantry structures (1); the lifting system (4) is used to hoist the empty beam transport vehicle and lift the empty beam transport vehicle to a high place or lower it to the bridge deck; A balance lifting point type lifting system is adopted in one gantry structure (1), and two independent lifting point type lifting systems are adopted in the other gantry structure, forming a four-point lifting and three-point balance system; The balance lifting point type lifting system includes two winches (4-1), two steering pulleys (4-3), two fixed pulleys (4-2), two balance pulleys (4-7) symmetrically arranged on the left and right sides of the gantry structure (1), as well as a steel wire rope (4-6) and a spreader (4-5); two movable pulleys (4-4) are symmetrically arranged on the spreader (4-5); one end of the steel wire rope (4-6) is connected to the left winch (4-1), and the other end sequentially bypasses the left steering pulley (4-3), the left fixed pulley (4-2), then bypasses the left movable pulley (4-4) downward and then bypasses the left fixed pulley (4-2) upward, and then horizontally passes through the left balance pulley (4-7) and the right balance pulley (4-7), and the steel wire rope (4-6) passes through the ropes at an angle between the two balance pulleys (4-7). After the steel wire rope (4-6) bypasses the right balance pulley (4-3) and the right fixed pulley (4-2), it bypasses the right movable pulley (4-4) downward and then bypasses the right fixed pulley (4-2) upward, and then is connected to the right winch (4-1) through the right steering pulley (4-3); The independent lifting point type lifting system includes two winches (4-1), two steering pulleys (4-3), two fixed pulleys (4-2), two steel wire rope fixing seats (4-8), two steel wire ropes (4-6) and a spreader (4-5) symmetrically arranged on the left and right sides of the gantry structure (1); two movable pulleys (4-4) are symmetrically arranged on the spreader (4-5); one end of the left steel wire rope (4-6) is connected to the left winch (4-1), and the other end sequentially bypasses the left steering pulley (4-3), the left fixed pulley (4-2), then bypasses the left movable pulley (4-4) downward and then bypasses the left fixed pulley (4-2) upward, and then horizontally extends and is fixedly connected to the right steel wire rope fixing seat (4-8); the wire threading method of the right steel wire rope is symmetric to that of the left steel wire rope; The gantry structure (1) is an O-shaped closed structure, which includes two upper curved beams (1-1), two lower curved beams (1-2) and two support bases (1-3). The two support bases (1-3) are arranged on the bridge, and the load of the gantry structure (1) is transmitted to the bridge through the support bases (1-3); the two support bases (1-3) are connected by a lower cross beam (1-4).

2. The beam transporting and passing meeting lifting device on a bridge according to claim 1, characterized in that, The cross-section of the support base (1-3) in the transverse direction of the bridge is foot-shaped, and it includes an upper connecting part (1-3-1), a toe part (1-3-2) and a lower connecting part (1-3-4). The toe part (1-3-2) gradually becomes shorter, and the lower connecting part (1-3-4) is arranged at the end of the toe part (1-3-2). The lower connecting part (1-3-4) is used for connecting with the lower cross beam (1-4).

3. The beam transporting and passing meeting lifting device on a bridge according to claim 1, characterized in that, The support base (1-3) and the lower cross beam (1-4) are connected by a pin shaft and an open pin hole.

4. The beam transporting and passing meeting lifting device on a bridge according to claim 1, characterized in that, Boot plates (3) are symmetrically arranged on the left and right sides of the lower cross beam (1-4).

5. A beam transporting and passing meeting method on a bridge, characterized in that, The method includes the following steps: pre-install the passing and lifting device according to any one of claims 1-4 at the passing point on the bridge between the box girder prefabrication yard and the bridge span to be erected. When the empty beam transport vehicle returns and arrives at the passing point, use the passing and lifting device to lift the empty beam transport vehicle to a high place. Wait until the heavy beam transport vehicle arrives at the passing point with the beam, pass under the empty beam transport vehicle lifted by the passing and lifting device, lower the empty beam transport vehicle to the bridge deck, and return to the box girder prefabrication yard to transport the beam, thus completing the passing operation on the bridge.

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