Walking device and method for continuous beam cantilever bridge fabrication machine

Abstract

The invention provides a walking device and method for a continuous beam cantilever bridge fabrication machine, and relates to the technical field of bridge fabrication equipment. The walking device comprises a base assembly, a chain and a chain box. The chain is composed of two sub-chains, each sub-chain is provided with a pin roller and chain teeth, and the two sub-chains can form zipper type meshing through the chain teeth. The base assembly comprises an assembling box, a disassembling box and a side connecting plate. The assembling box is suitable for assembling the chains in the separated state into an engaged state; the function of the splitting box is opposite to that of the assembling box; the assembling box and the disassembling box are fixedly connected to form a first interval; a stop block is fixedly arranged at the top of the assembly box; the chains penetrate through the assembling box and the disassembling box, the chains located in the first interval are in an engaged state, and the chains located outside the first interval are in a separated state; the chain box is a closed box body suitable for containing and guiding the sub-chain. The device overcomes the defects that the existing continuous beam cantilever bridge fabrication machine adopts a sliding friction form, so that the motion resistance is large, and the movement is inharmonious.

Description

Technical Field

[0001] The invention relates to the technical field of bridge-building equipment, and in particular to a traveling device and method for a continuous beam cantilever bridge-building machine. Background Art

[0002] The continuous beam cantilever bridge construction process is different from the bridge construction process using prefabricated beams or casting of entire beams. Its process flow is to first cast the starting beam section at the top of the bridge column, then use the cast beam section as support, extend the cantilever in the direction of the bridge extension, and use the cantilever to support the formwork for casting the next beam section. After the new beam section is cast, the casting is repeated section by section. During construction, operations are carried out simultaneously at both ends of the bridge span, and finally the span is closed in the middle.

[0003] Among them, the continuous beam cantilever bridge machine is a device that mainly serves as a cantilever to support the beam section template. Its main body is a truss 1 with a parallelogram structure. Figure 1 The relevant part is shown. A guide rail 5 made of I-beam is arranged between the truss 1 and the beam surface. A front support 2 is arranged at the front end of the bottom edge of the truss 1, and the bottom surface of the front support 2 abuts against the top surface of the I-beam guide rail 5; and a reverse wheel 4 is arranged at the rear end of the bottom edge of the truss 1, and the reverse wheel 4 extends into the grooves on both sides of the I-beam guide rail 5. When the bridge-building machine is in the walking state, because the cantilever end of the truss 1 will use the front support 2 as a fulcrum, a seesaw effect is formed, so that the reverse wheel 4 is tilted upward, and then fastened with the lower surface of the top plate of the I-beam guide rail 5.

[0004] It can be seen that when the bridge-building machine is moving, the rear end of the bottom side of the truss 1 is provided with a kick wheel 4 to form rolling friction, but the front end of the bottom side of the truss 1 adopts sliding friction with two planes close together, which greatly increases the walking resistance. The most important reason why rollers are not provided at the front support 2 is that the main working state of the bridge-building machine is a fixed state, not a mobile state. In the fixed state, sufficient friction is required between the truss 1 and the guide rail 5. When the rear end of the truss 1 is fixed, a downward pressure device will be used to make the base of the kick wheel 4 close to the top surface of the guide rail 5, and the kick wheel 4 itself moves down and does not play a role. That is, the force direction of the rear end of the truss 1 in the fixed state and the mobile state is exactly opposite. Therefore, the friction can be reduced by providing the kick wheel 4 when moving. However, the bottom front end of the truss 1 is in a downward force direction in both states. Although providing conventional rollers at the front support 2 is conducive to movement, it is not conducive to the more important fixation, which seems to be a loss of the big picture for the small.

[0005] But in any case, when the truss 1 moves, the front support 2 located at the point with the greatest pressure adopts a sliding friction form, which causes great movement resistance. This not only requires the preparation of a driving device with extremely large thrust, but also because the same bridge-building machine generally has multiple sets of parallel arranged trusses 1 and guide rails 5, there is often a large difference in friction between the multiple sets of trusses 1 and guide rails 5, which causes the displacement of the multiple sets of trusses 1 to be asynchronous and lack coordination, especially when one side is faster and the other side is slower, which will cause the overall structure of the bridge-building machine to be distorted and reduce the strength of the connection structure between the trusses 1. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing continuous beam cantilever bridge-building machine that the front support adopts the sliding friction form, which causes large movement resistance and uncoordinated movement.

[0007] In order to solve the above technical problems, the present application provides a walking device of a continuous beam cantilever bridge-building machine, which is used for the walking of the continuous beam cantilever bridge-building machine. The continuous beam cantilever bridge-building machine includes a front support located at the front end of the bottom of the truss and a guide rail matched with the front support; It includes: a base assembly, a chain and a chain box; The width of the chain is not greater than the width of the guide rail. The chain is composed of two sub-chains, each of which is composed of a plurality of chain link units. The chain link unit includes a chain plate, an axle, a roller and a chain tooth. The chain plates of each of the chain link units are hinged in sequence at the head and tail to form a chain ring. The tail end of the axle is connected to the chain plate, the axle is arranged perpendicular to the length direction of the sub-chain, the roller is sleeved on the outside of the axle with a clearance fit, and the chain tooth is arranged at the head end of the axle. The two sub-chains can form a zipper-like bite through the chain tooth. The base assembly comprises an assembly box, a disassembly box and a side connecting plate; the assembly box is suitable for assembling the chain in a separated state into a meshed state; the disassembly box is suitable for disassembling the chain in a meshed state into a separated state; a first interval suitable for accommodating the front support is formed between the assembly box and the disassembly box; the two sides of the assembly box and the disassembly box are fixedly connected by a side connecting plate respectively; a stopper is fixedly arranged on the top of the assembly box on one side close to the first interval; The chain passes through the assembly box and the disassembly box, the chain located in the first interval is in an engaged state, and the chain located outside the first interval is in a separated state; The chain box is a closed box body suitable for accommodating and guiding the sub-chains; a chain box is arranged on each side of the base assembly; the chain box is arranged in a loop between the same-side inlet of the assembly box and the same-side outlet of the disassembly box, so that the sub-chains separated on the same side form a loop; an opening suitable for the front support to pass through is formed between the chain boxes on both sides.

[0008] Further, the shaft rod is rotatably connected to the chain plate, and the shaft rod rotates along the circumferential direction of the sub-chain; The chain box includes two horizontal sections, one vertical section and two conversion sections; one end of the two horizontal sections is respectively connected to the assembly box and the disassembly box, the other end of the two horizontal sections is respectively connected to a conversion section, and the vertical section is connected between the two conversion sections; The shaft rod is in a flat relationship with the chain plate in the horizontal section, and in a vertical relationship with the chain plate in the vertical section. The conversion section is arranged between the horizontal section and the vertical section. The wall plate of the conversion section close to the roller is a guide wall. When the roller moves in the conversion section, it is deflected by the guide wall, so that the shaft rod and the chain plate are converted between a flat relationship and a vertical relationship.

[0009] Furthermore, the chain plate includes a main chain plate and a secondary chain plate, both of which are straight plates, and shaft rod seats are arranged at both ends of the inner side surface of the main chain plate, and the shaft rod seats are rotatably connected with the shaft rod through the shaft rod rotating shaft, and the two shaft rod rotating shafts belonging to the same main chain plate are coaxial, and chain link rotating shafts are arranged at both ends of the outer side surface of the main chain plate, and when the shaft rod is in a flat relationship with the main chain plate, the shaft rod and the chain link rotating shaft are coaxial; the head end of the secondary chain plate is hinged to the chain link rotating shaft.

[0010] Furthermore, the shaft of the shaft rod is a cylinder, the head end of the shaft rod is arranged as a square shaft, and a square hole matching the square shaft is opened on the chain tooth.

[0011] Furthermore, the chain link unit also includes a pressure plate and a chain tooth bolt, the diameter of the shaft rod body is not less than the diagonal of the square shaft, a concave stop is provided at the end of the chain tooth close to the shaft rod, the concave stop is adapted to the head end of the shaft rod body, a countersunk groove is provided at the end of the chain tooth away from the shaft rod, the square hole is connected between the concave stop and the countersunk groove, and the length of the square hole is greater than the length of the square shaft; the shape of the pressure plate is smaller than the cross-section of the countersunk groove and larger than the cross-section of the square hole; the chain tooth bolt penetrates the pressure plate and is threadedly connected to the head end of the square shaft, and the nut height of the chain tooth bolt is less than the depth of the countersunk groove.

[0012] Furthermore, guide plates are provided on both sides of the front support; a second interval is formed between the side connecting plate and the chain, and the second interval is suitable for accommodating the guide plates on both sides of the front support.

[0013] Furthermore, guide blocks are provided at both the front and rear ends of the bottom surface of the side connecting plate, and the guide blocks located on both sides of the base assembly can be clamped with the two sides of the guide rail.

[0014] Furthermore, a bolt through hole is provided through the side surface of the side connecting plate close to the chain, and the bolt through hole can be aligned with the threaded holes provided on both sides of the front support.

[0015] Furthermore, the assembly box and the disassembly box are open structures on one side close to the guide rail. Both the assembly box and the disassembly box include side guide plates, and the outer side surfaces of the side guide plates are in contact with and fixedly connected to the side connecting plates over the entire length.

[0016] A method for traveling a continuous beam cantilever bridge-building machine comprises the following steps: S01: Release the fixation of the front support and the guide rail; S02: Lift up the front support; S03: Push the guide rail forward until it is in place; S04: inserting the aforementioned continuous beam cantilever bridge-building machine walking device between the front support and the guide rail; S05: lowering the front support; S06: Push the front support forward until it is in place; S07: Lift up the front support; S08: extracting the traveling device of the continuous beam cantilever bridge-building machine; S09: lowering the front support; S10: Fix the front support to the guide rail.

[0017] By adopting the above technical solution, the present invention has the following technical effects: The walking device of the continuous beam cantilever bridge machine provided by the present invention is equivalent to arranging a lot of rollers between the front support and the guide rail by setting a chain with rollers, thereby greatly reducing the movement resistance of the front support. It is also because the movement resistance of the front support and the guide rail in a single group is greatly reduced, and the difference between the high and low resistance of multiple groups of trusses is reduced, so that the movement resistance of multiple groups of trusses can be converged, so that the multiple groups of trusses can maintain a high degree of coordination and consistency during movement, and reduce the problem of overall distortion of the frame structure due to fast and slow. In addition, because its chain is a zipper structure, it can be divided into two sub-chains with half the width, and the Y-shaped bifurcation structure of the zipper makes the sub-chain deflected a sufficient distance and then turned to form a cycle, avoiding opening holes on important load-bearing components such as trusses or front supports, and ensuring the safety of the equipment. In addition, the main body of the device is a flat structure, which is very convenient to lay out and remove. When the bridge machine needs to move, the device is laid out and removed after moving, which does not increase the difficulty of the walking process and does not increase the complexity of the operation too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram of an embodiment of the present invention in use; Figure 2 A schematic top view of the structure of an embodiment of the present invention; Figure 3 for Figure 2Sectional view at AA in the middle; Figure 4 It is a schematic diagram of the exploded structure of a link unit according to an embodiment of the present invention; Figure 5 A schematic cross-sectional view of the structure of a link unit according to an embodiment of the present invention; Figure 6 It is a schematic three-dimensional diagram of the structure of the chain in the engaged state according to the embodiment of the present invention; Figure 7 A schematic top view of the structure of a chain in an embodiment of the present invention during assembly; Figure 8 A schematic three-dimensional diagram of the structure of a chain in a conversion section of a chain box according to an embodiment of the present invention; Fig. 9 A schematic diagram of the structural relationship between the chain and the conversion section of the chain box according to an embodiment of the present invention; Fig.10 It is a schematic structural stereogram of a base assembly according to an embodiment of the present invention at a first viewing angle; Fig.11 It is a schematic three-dimensional diagram of the structure of the base assembly of an embodiment of the present invention at a second viewing angle.

[0020] Description of reference numerals: 1-truss, 2-front support, 3-traveling device, 4-reverse buckle wheel, 5-guide rail, 6-split box, 7-side connecting plate, 8-second interval, 9-chain, 10-upright roller, 11-block, 12-assembly box, 13-horizontal section, 14-conversion section, 15-upright section, 16-chain box, 17-guide block, 18-block pin, 19-block plate, 20-axle rod seat, 21-main chain plate, 22-axle rod, 23-square shaft, 24-chain tooth, 25-chain tooth bolt, 26-pressure plate, 27-roller, 28-axle rod rotating shaft, 29-chain link rotating shaft, 30-secondary chain plate, 31-recessed stop, 32-square hole, 33-sunk groove, 34-side guide plate, 35-wedge block, 36-guide wall, 37-bolt through hole, 38-support rod. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted in the description of the present invention that the coordinate system used in this specification when describing the orientation is determined by the posture of the corresponding main view, and the naming of the observation angle of the corresponding view is also based on this. Therefore, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] The present embodiment provides a traveling device for a continuous beam cantilever bridge-building machine, which is used for the traveling of the continuous beam cantilever bridge-building machine. The continuous beam cantilever bridge-building machine is generally as described in the background technology, and it at least includes a front support 2 located at the bottom front end of the truss 1 and a guide rail 5 matching the front support 2.

[0026] In one embodiment, Figures 1 to 11 As shown, the walking device 3 includes a base assembly, a chain 9 and a chain box 16.

[0027] The width of the chain 9 is not greater than the width of the guide rail 5. The chain 9 is composed of two sub-chains, each of which is composed of a plurality of chain link units. The chain link unit includes a chain plate, a shaft 22, a roller 27 and a chain tooth 24. The chain plates of each of the chain link units are hinged in sequence at the head and tail to form a chain ring; the tail end of the shaft 22 is connected to the chain plate, the shaft 22 is arranged perpendicular to the length direction of the sub-chain, the roller 27 is sleeved on the outside of the shaft 22 with a clearance fit, and the chain tooth 24 is arranged at the head end of the shaft 22. The two sub-chains can form a zipper-like bite through the chain tooth 24.

[0028] The base assembly includes an assembly box 12, a disassembly box 6 and a side connecting plate 7. The assembly box 12 is suitable for assembling the chain 9 in a separated state into a meshed state; the disassembly box 6 is suitable for disassembling the chain 9 in a meshed state into a separated state. The assembly box 12 and the disassembly box 6 can refer to the existing zipper lock structure. The structures of the two are basically the same, both have side guides 34 and wedge blocks 35, but the relative movement directions of the chain 9 are different, resulting in different functions. Take the meshing process as an example, see Figure 7 As shown, the sub-chains can be turned under the constraints of the side guides 34 and the wedge-shaped blocks 35. At the turning point, the distance between the adjacent chain teeth 24 of the sub-chain on one side can be expanded, thereby forming an opening to accommodate the chain teeth 24 on the other side. When the chain teeth 24 on the other side enter the opening, the side guides 34 guide the two sub-chains to perform parallel linear motion, thereby closing the aforementioned opening, and then the chain teeth 24 on both sides engage with each other. As for the separation of the chain teeth 24, the reverse movement of the above process can be performed.

[0029] Back to the structure of the device, a first interval suitable for accommodating the front support 2 is formed between the assembly box 12 and the disassembly box 6; the two sides of the assembly box 12 and the disassembly box 6 are fixedly connected by a side connecting plate 7; a stopper 11 is fixedly provided on the top of the assembly box 12 on one side close to the first interval.

[0030] The chain 9 passes through the assembly box 12 and the disassembly box 6, the chain 9 located in the first interval is in an engaged state, and the chain 9 located outside the first interval is in a separated state.

[0031] The chain box 16 is a closed box body suitable for accommodating and guiding the sub-chains. A chain box 16 is arranged on each side of the base assembly; the chain box 16 is arranged in a loop shape between the same-side inlet of the assembly box 12 and the same-side outlet of the disassembly box 6, so that the sub-chains separated on the same side form a loop. An opening suitable for the front support 2 to pass through is formed between the chain boxes 16 on both sides. In addition, because part of the chain box 16 may be in a suspended state, in order to better fix the chain box 16, a support rod 38 for supporting the chain box 16 can be arranged on the side connecting plate 7.

[0032] Regarding the specific use process of the device, first, the front support 2 is lifted up to form a sufficient gap between the front support 2 and the guide rail 5. Then, the front support 2 is inserted into the opening formed between the chain boxes 16 on both sides until the front support 2 reaches the top of the first interval. Because the chain 9 in the bite state is in the area of ​​the first interval, after the front support 2 is lowered, the chain 9 in the bite state is padded between the front support 2 and the guide rail 5. The shaft 22 of the chain 9 is sleeved with rollers 27, so it is equivalent to padded between the front support 2 and the guide rail 5. The movement resistance of the front support 2 is greatly reduced. Because the movement resistance of the front support 2 and the guide rail 5 in a single group is greatly reduced, the difference between the high and low resistance of multiple groups of trusses 1 is reduced, and the movement resistance of multiple groups of trusses 1 can be converged, so that the multiple groups of trusses 1 maintain a high degree of coordination and consistency during movement, and reduce the problem of overall distortion of the frame structure due to fast and slow movements. In addition, because the rolling body of the device is a large number of rollers 27, rather than a single or a small number of wheels, the collapse of the guide rail 5 due to the concentrated pressure can be avoided. Because the front support 2 is the central fulcrum of the seesaw structure of the truss 1, it is the place where the entire truss 1 is subjected to the greatest force. If a wheel is used as a rotating body, the wheel body and the track plane only form contact at the tangent point, and the contact area is very small. In the case of a small number of wheel bodies, the wheel body will form a huge contact stress on the guide rail 5, which can easily cause the collapse of the guide rail surface and make it uneven. Finally, the device has an overall flat structure at the supporting part, and can be inserted and removed without increasing the lifting height of the front support 2. It is very convenient to deploy and remove. When the bridge construction machine needs to be moved, the device is deployed and removed after the movement, which does not increase the difficulty of operation and does not increase the complexity of operation too much.

[0033] As for the specific working process of the present device, the roller 27 on the chain 9 in the first interval area is squeezed between the front support 2 and the guide rail 5. When the front support 2 moves, the roller 27 will be driven to roll forward together. However, the moving speed of the roller 27 is half of the moving speed of the front support 2. The roller 27 moves backward relative to the front support 2. During this relative movement process, the front end of the front support 2 will eventually abut against the block 11, thereby forcing the base assembly to move at the same speed as the front support 2. In this way, the chain 9 will produce relative displacement relative to the assembly box 12, the disassembly box 6 and the chain box 16, thereby providing power for the assembly box 12 and the disassembly box 6 to perform their respective functions.

[0034] The reason why the chain 9 under the front support 2 is engaged and the sections outside are split is to enable the chain 9 to circulate without opening holes in the load-bearing structure of the truss 1 or the front support 2. Generally speaking, the solution of circulating on the same operating plane like a crawler is the simplest and most effective solution. However, for the front support 2 located at the bottom of the truss 1, the crawler-like solution will cause the chain 9 to cross the top of the front support 2 or pass through the front support 2, so it is necessary to open a corresponding wide and flat hole on the truss 1 or the front support 2. However, because the truss 1 and the front support 2 are important load-bearing components, opening a wide and flat hole on them that almost cuts them off will greatly reduce the strength, which is not conducive to the safety of the equipment. The chain 9 of the present device adopts a zipper structure, and the split box 6 will not only split the chain 9 into two halves, reducing the width of a single chain, but also naturally form a Y-shaped bifurcated structure as a whole, which can make the disassembled sub-chain deflect and stretch to both sides of the front support 2, so that the sub-chain can turn after deflecting to a sufficient distance, and then make the sub-chain bypass the side of the truss 1 or the front support 2, avoiding opening holes in the load-bearing structure of the truss 1 or the front support 2. The reason why two non-interactive deflectable chains are not used, but the two chains are meshed in the bedding interval, is that the rollers 27 in the bedding interval need to remain parallel to each other to avoid the problem of roller deflection and deviation. Therefore, after the two sub-chains are meshed through the chain teeth 24, the free ends of the rollers 27 originally in the cantilever state are fixed and cannot deflect or deviate.

[0035] Based on the above implementation, in a preferred implementation, Figures 4 to 8 As shown, the shaft rod 22 is rotatably connected to the chain plate, and the shaft rod 22 rotates along the circumferential direction of the sub-chain.

[0036] In addition, if Figure 2 and 3 As shown, the chain box 16 includes two horizontal sections 13, one upright section 15 and two conversion sections 14. One end of the two horizontal sections 13 is connected to the assembly box 12 and the disassembly box 6 in a one-to-one correspondence, and the other end of the two horizontal sections 13 is respectively connected to a conversion section 14, and the upright section 15 is connected between the two conversion sections 14.

[0037] The shaft 22 is in a flat relationship with the chain plate in the horizontal section 13, that is, Figure 5 The shaft 22 is in a perpendicular relationship with the chain plate in the upright section 15, that is, Figure 2 and 3 The conversion section 14 is arranged between the horizontal section 13 and the vertical section 15, as shown in FIG. Fig. 9As shown, the wall plate of the conversion section 14 close to the roller 27 is a guide wall 36. When the roller 27 moves in the conversion section 14, it is deflected by the guide wall 36, so that the shaft 22 and the chain plate are converted between the flat relationship and the vertical relationship. The conversion process can be seen in FIG. Figure 8 Content shown.

[0038] After the above arrangement, the split sub-chain can bypass the truss 1 or the front support 2 with a smaller width, which is beneficial to reducing the overall size of the entire device. Because if the sub-chain bypasses the truss 1 or the front support 2 in a split flat state, the sub-chain needs to be extended obliquely until it extends out in the width direction by the width of the entire sub-chain, that is, half the width of the chain 9, which not only causes the entire device to extend to both sides to be too large, but also because the sub-chain extends obliquely in a Y shape, the size of the entire device in the front-to-back distance is also too large. In the present embodiment, after the shaft rod 22 is rotatably connected to the chain plate, the shaft rod 22 rotates along the circumference of the chain plate and finally becomes perpendicular to it, so that the width of the sub-chain can be roughly equal to the width of the roller 27, thereby greatly reducing the width of the sub-chain, thereby reducing the distance that the sub-chain deflects to the side; and in conjunction with the conversion section 14, the roller 27 is also deflected while the sub-chain is turning, so that the extension distance of the sub-chain in the front and rear longitudinal direction caused by the oblique extension can be greatly shortened, thereby greatly reducing the overall dimensions of the entire device.

[0039] Based on the above implementation, in a preferred implementation, Figure 4 and 5 As shown, the chain plate includes a main chain plate 21 and a secondary chain plate 30, and both the main chain plate 21 and the secondary chain plate 30 are straight plates. A shaft seat 20 is provided at both ends of the inner side of the main chain plate 21, and the shaft seat 20 is rotatably connected with the shaft 22 through the shaft shaft 28. The two shaft shafts 28 belonging to the same main chain plate 21 are coaxial. A chain link shaft 29 is provided at both ends of the outer side of the main chain plate 21. When the shaft 22 is in a flat relationship with the main chain plate 21, the shaft 22 is coaxial with the chain link shaft 29. The head end of the secondary chain plate 30 is hinged to the chain link shaft 29. In order to prevent the secondary chain plate 30 from falling out, a blocking mechanism such as a stop pin 18 should be provided. In addition, in order to improve the stress condition at the hinge and reduce the damage to the chain link shaft 29 with different rotation directions when the sub-chain deflects in the assembly box 12 and the disassembly box 6, a baffle 19 can be set on the outside of the hinge of the secondary chain plate 30 to enhance the overall rigidity of the components at the hinge and prevent the chain link shaft 29 from bending after being stressed.

[0040] The main chain plate 21 and the auxiliary chain plate 30, which are both straight plates, can minimize the stretching amount of the chain 9 after long-term operation, thereby ensuring that the adjacent chain teeth 24 have a suitable pitch. In this case, the chain link shaft 29 and the shaft rod seat 20 are both arranged on the main chain plate 21 located on the inner side, which can ensure the coaxiality of the chain link shaft 29 and the shaft rod 22 in a flat relationship. The coaxiality of the chain link shaft 29 and the shaft rod 22 is conducive to the steering of the sub-chain itself, because the roller 27 as a rotating body is located at the rotation point of the chain link, which can reduce the obstruction and friction when the chain link rotates. In addition, the shaft shafts 28 located at both ends of the main chain plate 21 remain coaxial, which ensures that the shaft 22 can rotate in the circumferential direction of the main chain plate 21, avoiding interference after the roller 27 is deflected, and making the deflection direction of the roller 27 perpendicular to the force direction of the roller 27 when the pad rolls, avoiding the problem of the roller 27 being deflected from the main chain plate 21 when the pad rolls, and then running off the track.

[0041] Based on the above implementation, in a preferred implementation, Figure 4 and 5 As shown, the shaft of the shaft rod 22 is a cylinder, the head end of the shaft rod 22 is set as a square shaft 23, and a square hole 32 adapted to the square shaft 23 is opened on the chain tooth 24. After such a setting, it can be ensured that the chain tooth 24 always maintains the correct posture, and the chain tooth 24 is prevented from turning over due to the rotation of the roller 27, so that the occlusal surface of the chain tooth 24 rotates to an incorrect position. Of course, if the linear shape of the occlusal surface is processed in a rotary manner, that is, the chain tooth 24 is machined into a rotating body part, the problem that the chain tooth 24 cannot be engaged after rotation can also be avoided. However, because the chain tooth 24 of this scheme is a rotating body, the contact area of ​​the mutually engaged parts is small, and the force condition is not as good as the block scheme. Therefore, this embodiment preferably adopts the block scheme, and the square shaft 23 and the square hole 32 are set to prevent the chain tooth 24 from rotating together. Although the square hole 32 is not easy to be processed by cutting, since the fastener element 24 with a relatively complex curved surface is often preferably made by casting, it is also very convenient to cast the square hole 32 at the same time during casting.

[0042] Based on the above implementation, in a preferred implementation, Figure 4 and 5As shown, the chain link unit also includes a pressure plate 26 and a chain bolt 25. The diameter of the shaft of the shaft 22 is not less than the diagonal of the square shaft 23, so that the square shaft 23 forms a step structure with the shaft of the shaft 22. The end of the chain tooth 24 close to the shaft 22 is provided with a concave stop 31, and the concave stop 31 is adapted to the head end of the shaft of the shaft 22. The end of the chain tooth 24 away from the shaft 22 is provided with a sink groove 33, and the square hole 32 is connected between the concave stop 31 and the sink groove 33, and the length of the square hole 32 is greater than the length of the square shaft 23. The shape of the pressure plate 26 is smaller than the cross section of the sink groove 33 and larger than the cross section of the square hole 32. The chain bolt 25 penetrates the pressure plate 26 and is threadedly connected to the head end of the square shaft 23, and the nut height of the chain bolt 25 is less than the depth of the sink groove 33.

[0043] Such a configuration can firmly connect the chain teeth 24 to the shaft 22, and is convenient for maintenance. When the roller 27 is excessively worn or needs to be removed due to oiling in the hole, the chain teeth 24 can be simply removed to pull out the roller 27 without removing other parts of the chain 9. In addition, the connection method in which the concave stop 31 and the shaft 22 are matched can improve the overall rigidity of the connected chain teeth 24 and the shaft 22, compared with the solution of connecting only through a relatively thin square shaft 23, and ensure that the adjacent chain teeth 24 in the separated state always maintain the correct pitch. In addition, after the recessed groove 33 is set, the chain tooth bolt 25 as a connecting member does not protrude from the surface of the chain teeth 24, avoiding it from affecting the bite of the chain teeth 24.

[0044] In the existing continuous beam cantilever bridge-building machines, some front supports 2 have guide plates on both sides, so that the front supports 2 can be better guided by the guide rails 5. In such a case, in order to avoid the interference between the guide plates of the front supports 2 and the device, the preferred embodiment forms a second gap 8 between the side connecting plate 7 and the chain 9, such as Figure 2 As shown, the second spacer 8 can accommodate the guide plates on both sides of the front support 2, so that the guide plates of the front support 2 are inserted between the side connecting plates 7 and the chain 9, so that the chain 9 can still maintain good contact with the supporting surface of the front support 2.

[0045] Based on the above implementation, in a preferred implementation, Fig.10 and 11As shown, guide blocks 17 are provided at both the front and rear ends of the bottom surface of the side connecting plate 7, and the guide blocks 17 located on both sides of the base assembly can be engaged with the two sides of the guide rail 5. Generally, the height of the guide plate of the front support 2 is not too high, and it is impossible to form a guiding match with the guide rail 5 after passing through the second interval 8. Therefore, in order to ensure the guiding property of the front support 2, the present embodiment provides a guide block 17 on the bottom surface of the side connecting plate 7, thereby replacing the guide plate of the front support 2, and guiding the front support 2 through the device itself. The reason why two guide blocks 17 are provided at the front and rear ends of the side connecting plate 7 instead of an integral strip-shaped component is to adapt to the situation where the height of the guide plate of the front support 2 of some equipment is high enough and the guide plate of the front support 2 is sufficient to form a match with the guide rail 5. The guiding part between the two guide blocks 17 is still the guide plate of the front support 2, and the guide block 17 only becomes an auxiliary component.

[0046] Based on the above implementation, in a preferred implementation, Fig.10 and 11 As shown, a bolt through hole 37 is provided on the side of the side connecting plate 7 near the second interval 8. The bolt through hole 37 can be aligned with the threaded holes provided on both sides of the front support 2. In the previous embodiment, the device is used as a force transmission component between the front support 2 and the guide rail 5, and the force transmission path involves many components such as the guide block 17, the side connecting plate 7, the assembly box 12, the splitting box 6 and the chain 9. However, the chain 9, the assembly box 12 and the splitting box 6 are important components related to the bite and split of the chain 9. They are prone to unnecessary deformation when subjected to additional force, thereby hindering the bite function of the chain 9. Therefore, in this embodiment, a bolt through hole 37 is provided on the side connecting plate 7, and a threaded hole is provided on the guide plate of the front support 2, and the two are aligned, so that the side connecting plate 7 and the front support 2 are fixed as a whole by bolts, so that the transmission path of the guide force mainly involves only the side connecting plate 7, and the chain 9, the assembly box 12 and the splitting box 6 are prevented from being subjected to the guide force. In addition, the reason why threaded holes are opened on the guide plate of the front support 2 and a tensile relationship is formed between the side connecting plate 7 and the front support 2 by bolts, rather than threaded holes are opened in the side connecting plate 7 and tightened on both sides of the front support 2 by bolts, is because the guiding force of the front support 2 has a tendency to expand the spacing between the guide blocks 17, and the tensile relationship formed between the side connecting plate 7 and the front support 2 can offset the negative impact of this tendency, so that the guide blocks 17 maintain a good spacing; if both are positioned by pressure, the tightening force of the bolts plus the expansion tendency of the guiding force of the front support 2 will easily cause the spacing between the guide blocks 17 to expand, making it impossible for the guide blocks 17 to be simultaneously connected to both sides of the guide rail 5.

[0047] Based on the above implementation, in a preferred implementation, Fig.10 and 11As shown, the assembly box 12 and the split box 6 are open structures on the side close to the guide rail 5, that is, the bottom side of the base component, that is, there is no wall panel on this side, exposing the interior of the assembly box 12 and the split box 6.

[0048] If the assembly box 12 and the disassembly box 6 are provided with a bottom plate, the height of the assembly box 12 and the disassembly box 6 will be increased to a certain extent, which is not conducive to flattening the entire device as much as possible, so as to facilitate insertion between the front support 2 and the guide rail 5. Moreover, the bottom plates of the assembly box 12 and the disassembly box 6 are also prone to scratching the guide rail 5, increasing the running resistance. After removing this bottom plate, in addition to the above-mentioned benefits, it will also be beneficial to the engagement and separation of the chain 9, because the roller 27 in the separated state is also in contact with the guide rail 5, and then receives resistance from the guide rail 5; under the action of this resistance, the free end of the roller 27 in the separated state will have a tendency to move more backward relative to the connecting end; and because the roller 27 at this location is not in the compressed first interval area, the resistance it receives is basically only caused by the deadweight of the roller 27, so the force is not large and does not have excessive compulsion, so it can become a kind of power to assist the engagement and separation of the chain 9. Taking the engagement process as an example, please refer to Figure 7 For the roller 27 that is about to turn inward, its free end is more forward than the connection end. Therefore, after being subjected to the movement resistance from the guide rail 5, the free end has a greater tendency to move backward, so that the entire roller 27 has a stronger tendency to turn inward. Compared with the original solution that only relies on the chain plate to provide the bite power, the movement resistance from the guide rail 5 helps to complete the bite action of the chain 9. For the roller 27 that is about to separate, the movement resistance from the guide rail will increase the tendency of the roller 27 to turn outward, thereby helping to achieve the separation action.

[0049] In addition, as mentioned above, both the assembly box 12 and the disassembly box 6 have side guides 34. In this embodiment, the outer side of the side guide 34 is preferably fitted with the side connecting plate 7 over the entire length and fixedly connected, for example, by welding. This is because the side guide 34 is prone to eversion after being fixed without the connection of the bottom wall, which causes problems such as inaccurate positioning and unsmooth biting of the sub-chain. As mentioned above, the side connecting plate 7 needs to transmit sufficient guiding force, so it has sufficient strength. Therefore, the side connecting plate 7 and the side guide 34 are fixedly combined into one over the entire length, which can greatly improve the strength of the side guide 34 and prevent the side guide 34 from everting outward.

[0050] In addition, this embodiment also provides a method for traveling a continuous beam cantilever bridge-building machine, comprising the following steps: S01: Release the fixation between the front support 2 and the guide rail 5; S02: Lift the front support 2; S03: Push the guide rail 5 forward until it is in place; S04: inserting the aforementioned continuous beam cantilever bridge-building machine walking device between the front support 2 and the guide rail 5; S05: lowering the front support 2; S06: Push the front support 2 forward until it is in place; S07: Lift the front support 2; S08: extracting the traveling device of the continuous beam cantilever bridge-building machine; S09: lowering the front support 2; S10: Fix the front support 2 and the guide rail 5.

[0051] Before the current continuous beam cantilever bridge-building machine moves, because the newly cast beam section is used as the new work site, and the newly built beam section is still in a brand new state with nothing on it, there will be an operation of lifting the front support 2, that is, jacking up the truss 1, and then moving the guide rail 5 forward. Therefore, the process of steps S01 to S03 in the above method is existing. For the existing method, after moving the guide rail 5 forward, the next step is the process of step S06, and finally ends with steps S09 and S10. Therefore, the newly added steps of this method are S04 to S05, and S07 to S08.

[0052] Steps S04 to S05 are performed when the front support 2 has been lifted up, and the insertion operation itself is not difficult to operate. It only adds an operation of lowering the front support 2, which slightly increases the number of operation steps. Compared with the original method, steps S07 to S08 add an operation of lifting the front support 2. However, since the lifting operation of the front support 2 is not a new operation and has been done before, although the complexity of the process is increased, there is not much difficulty in operation. Therefore, this method makes the travel of the bridge-building machine smoother without increasing the difficulty of operation and moderately increasing the complexity of the process. It is a travel method of a continuous beam cantilever bridge-building machine that is worthy of large-scale promotion and implementation.

[0053] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A traveling device for a continuous beam cantilever bridge-building machine, used for traveling the continuous beam cantilever bridge-building machine, the continuous beam cantilever bridge-building machine comprising a front support (2) located at the front end of the bottom of a truss (1) and a guide rail (5) matched with the front support (2); It is characterized in that include: Base assembly, chain (9) and chain box (16); The width of the chain (9) is not greater than the width of the guide rail (5), and the chain (9) is composed of two sub-chains, each of which is composed of a plurality of chain link units; the chain link unit comprises a chain plate, a shaft rod (22), a roller (27) and a chain tooth (24); the chain plates of each of the chain link units are hinged in sequence at the head and tail ends to form a chain ring; the tail end of the shaft rod (22) is connected to the chain plate, the shaft rod (22) is arranged perpendicular to the length direction of the sub-chain, the roller (27) is sleeved on the outside of the shaft rod (22) with a clearance fit, and the chain tooth (24) is arranged at the head end of the shaft rod (22); the two sub-chains can form a zipper-like bite through the chain tooth (24); The base assembly comprises an assembly box (12), a disassembly box (6) and a side connecting plate (7); the assembly box (12) is suitable for assembling a chain (9) in a separated state into an engaged state; the disassembly box (6) is suitable for disassembling a chain (9) in an engaged state into a separated state; a first interval suitable for accommodating the front support (2) is formed between the assembly box (12) and the disassembly box (6); the two sides of the assembly box (12) and the disassembly box (6) are fixedly connected by a side connecting plate (7); a stopper (11) is fixedly provided on the top of the assembly box (12) on one side close to the first interval; The chain (9) passes through the assembly box (12) and the disassembly box (6), the chain (9) located in the first interval is in an engaged state, and the chain (9) located outside the first interval is in a separated state; The chain box (16) is a closed box body suitable for accommodating and guiding the sub-chains; a chain box (16) is arranged on each side of the base assembly; the chain box (16) is arranged in a loop between the same-side inlet of the assembly box (12) and the same-side outlet of the separation box (6), so that the sub-chains separated on the same side form a loop; an opening suitable for the front support (2) to pass through is formed between the chain boxes (16) on both sides.

2. The traveling device of the continuous beam cantilever bridge-building machine according to claim 1 is characterized in that: The shaft rod (22) is rotatably connected to the chain plate, and the shaft rod (22) rotates along the circumference of the sub-chain; The chain box (16) comprises two horizontal sections (13), one vertical section (15) and two conversion sections (14); one end of the two horizontal sections (13) is connected to the assembly box (12) and the disassembly box (6) in a one-to-one correspondence, the other end of the two horizontal sections (13) is respectively connected to a conversion section (14), and the vertical section (15) is connected between the two conversion sections (14); The shaft rod (22) is in a flat relationship with the chain plate in the horizontal section (13), and in a vertical relationship with the chain plate in the vertical section (15). The conversion section (14) is arranged between the horizontal section (13) and the vertical section (15). The wall plate of the conversion section (14) close to the roller (27) is a guide wall (36). When the roller (27) moves in the conversion section (14), it is deflected by the guide wall (36), so that the shaft rod (22) and the chain plate are converted between a flat relationship and a vertical relationship.

3. The traveling device of the continuous beam cantilever bridge-building machine according to claim 2 is characterized in that: The chain plate comprises a main chain plate (21) and a secondary chain plate (30), both of which are straight plates. A shaft seat (20) is provided at both ends of the inner side surface of the main chain plate (21). The shaft seat (20) is rotatably connected to the shaft (22) via a shaft rotating shaft (28). Two shaft rotating shafts (28) belonging to the same main chain plate (21) are coaxial. Chain link rotating shafts (29) are provided at both ends of the outer side surface of the main chain plate (21); when the shaft (22) is in a flat relationship with the main chain plate (21), the shaft (22) and the chain link rotating shaft (29) are coaxial; and the head end of the secondary chain plate (30) is hinged to the chain link rotating shaft (29).

4. The traveling device of the continuous beam cantilever bridge-building machine according to claim 3 is characterized in that: The shaft of the shaft rod (22) is a cylinder, the head end of the shaft rod (22) is arranged as a square shaft (23), and a square hole (32) matching the square shaft (23) is provided on the chain tooth (24).

5. The traveling device of the continuous beam cantilever bridge-building machine according to claim 4 is characterized in that: The chain link unit further comprises a pressing plate (26) and a chain tooth bolt (25); the diameter of the shaft of the shaft (22) is not less than the diagonal of the square shaft (23); a concave stop (31) is provided at one end of the chain tooth (24) close to the shaft (22); the concave stop (31) is matched with the head end of the shaft of the shaft (22); a sink groove (33) is provided at one end of the chain tooth (24) away from the shaft (22); the square hole (32) is connected between the concave stop (31) and the sink groove (33); the length of the square hole (32) is greater than the length of the square shaft (23); the shape of the pressing plate (26) is smaller than the cross section of the sink groove (33) and larger than the cross section of the square hole (32); the chain tooth bolt (25) penetrates the pressing plate (26) and is threadedly connected to the head end of the square shaft (23); the nut height of the chain tooth bolt (25) is less than the depth of the sink groove (33).

6. The traveling device of the continuous beam cantilever bridge-building machine according to claim 2 is characterized in that: The front support (2) has guide plates on both sides; a second space (8) is formed between the side connecting plate (7) and the chain (9), and the second space (8) is suitable for accommodating the guide plates on both sides of the front support (2).

7. The traveling device of the continuous beam cantilever bridge-building machine according to claim 6 is characterized in that: Guide blocks (17) are provided at both the front and rear ends of the bottom surface of the side connecting plate (7), and the guide blocks (17) located on both sides of the base assembly can be clamped with both sides of the guide rail (5).

8. The traveling device of the continuous beam cantilever bridge-building machine according to claim 7 is characterized in that: A bolt through hole (37) is provided through the side surface of the side connecting plate (7) close to the second spacer (8), and the bolt through hole (37) can be aligned with the threaded holes provided on both sides of the front support (2).

9. The traveling device of the continuous beam cantilever bridge-building machine according to claim 8 is characterized in that: The assembly box (12) and the disassembly box (6) are open structures on one side close to the guide rail (5). The assembly box (12) and the disassembly box (6) both include a side guide plate (34). The outer side surface of the side guide plate (34) is in contact with and fixedly connected to the side connecting plate (7) over the entire length.

10. A method for traveling a continuous beam cantilever bridge-building machine, characterized in that: The steps include: S01: releasing the fixation between the front support (2) and the guide rail (5); S02: Lift the front support (2); S03: Push the guide rail (5) forward until it is in place; S04: Insert the walking device of the continuous beam cantilever bridge-building machine according to any one of claims 1 to 9 between the front support (2) and the guide rail (5); S05: lowering the front support (2); S06: Push the front support (2) forward until it is in place; S07: Lift the front support (2); S08: extracting the traveling device of the continuous beam cantilever bridge-building machine; S09: lowering the front support (2); S10: Fix the front support (2) and the guide rail (5).

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