Intelligent sling bridge fabrication machine for tied-arch bridge
By using the combination of limiting devices and tooth belts in the intelligent sling bridge construction machine of the tied arch bridge, the problem of existing bridge construction machines sliding on arcuate beams and waiting for solidification is solved, and higher stability and construction are achieved efficiency.
Patent Information
- Application Number
- CN202411031878.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2024-12-27
AI Technical Summary
When building a tie-bar arch bridge, the existing bridge-building machine is suspended on arc-shaped arch beams, which is easy to slide and needs to wait for the concrete to solidify before dismantling, resulting in low construction efficiency.
An intelligent sling bridge construction machine for tied arch bridges is designed, using a combination of limiting devices and tooth belts. The limiting gear is driven by the driving motor to rotate, so that the bridge construction machine can walk on the arch beams, and retract through suspension devices and hollow expansion and contraction. The rod enables rapid movement and loading and unloading, reducing disassembly and reinstallation time.
It improves the stability and construction efficiency of the bridge-building machine, reduces the waiting time for concrete to cool down, and achieves rapid advancement of bridge construction.
Smart Images
Figure CN119194994A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tied arch bridge construction equipment, in particular to an intelligent sling bridge construction machine for tied arch bridges. Background Art
[0002] The tied arch bridge is a type of bridge that combines the advantages of arches and beams. It combines the two basic structural forms of arches and beams to bear the load together, giving full play to the structural performance and combined effect of beam bending and arch compression. The horizontal thrust of the arch end is borne by the tie rod, so that the arch end support does not generate horizontal thrust. The arch and the chord are connected by vertical rods hinged at both ends. At present, when building a tied arch bridge, the arch beam is generally built first, and then the bridge deck is built by a bridge-building machine suspended on the arch beam. However, the bridge-building machines currently used have some shortcomings when used, as follows: When building a bridge deck, concrete is poured by a bridge-building machine to form the bridge deck. The bridge-building machine starts pouring concrete from the shore, gradually moving the bridge deck toward the middle in sections to complete the construction of the bridge. During this process, the bridge-building machine is suspended on the arch beam through a cantilever. Since the arch beam is arc-shaped, when the vertical cantilever is installed on the arc-shaped arch beam surface during suspension, the downward force of gravity causes the cantilever to be easily forced to slide down the arc surface. Additional fixed parts need to be added, which affects the subsequent movement of the bridge-building machine. After pouring concrete, the bridge-building machine needs to wait for the concrete to solidify before it can be disassembled, and then the next step of pouring preparation can be carried out. The time waiting for the concrete to cool is wasted, which greatly affects the efficiency of bridge construction. Summary of the invention
[0003] The present invention provides an intelligent cable-stayed bridge-building machine for a tied arch bridge, which has the advantages of good stability and high bridge-building efficiency, and solves the problems in the above-mentioned background technology.
[0004] The present invention provides the following technical solutions: an intelligent cable bridge-building machine for a tied arch bridge, a casting mold installed on the bridge and a limiting device symmetrically and movably installed on the arch beam, the casting mold includes a bottom plate, and side boxes are symmetrically and movably connected on the bottom plate and located on the front and rear sides of the arch beam, and a pressing telescopic rod is symmetrically fixedly installed on the bottom plate, and the extended end of the pressing telescopic rod is fixedly connected to the side of the side box, and a displacement telescopic rod is fixedly installed on the left part of the inner cavity of the side box, and the extended end of the displacement telescopic rod is movably connected to a movable roller located inside the side box, and a suspension plate I is movably sleeved on the movable roller, and a positioning roller is movably sleeved inside the right end of the side box, and a suspension plate II is movably sleeved on the positioning roller, and the limiting device The left and right ends are movably sleeved with suspension steel ropes respectively, the two ends of one suspension steel rope are respectively fixedly connected to the two suspension plates I located on the front and rear sides of the arch beam, and the two ends of the other suspension steel rope are respectively fixedly connected to the two suspension plates II located on the front and rear sides of the arch beam, a toothed belt is fixedly installed on the middle part of the upper surface of the arch beam by screws, the limiting device is movably engaged with the toothed belt, the bottom surface of the arch beam is fixedly connected with a suspension device, the suspension devices are respectively installed on the left and right sides of the casting mold, the suspension device is fixedly connected to the arch beam, the front and rear ends of the suspension device are threadedly sleeved with limiting screws, the limiting screws are movably sleeved with the casting mold, and the outer side of the limiting device is fixedly installed with a ratchet limiting device.
[0005] Preferably, the limit device includes a limit box, a movable cavity is opened inside the limit box, a limit gear is movably engaged in the movable cavity, one end of the limit gear is fixedly sleeved with the ratchet of the ratchet limit device, a support plate is movably sleeved on the limit gear, the support plate is movably engaged with the movable cavity, the limit gear is meshingly connected with the toothed belt, hydraulic rods are symmetrically fixedly installed on the support plate and on both sides of the limit gear, support springs are symmetrically and movably installed on the upper surface of the support plate, and both ends of the support springs are respectively fixedly connected to the top of the movable cavity and the upper surface of the support plate.
[0006] Preferably, a slot is provided on the inner side of the limit box, a drive motor is movably connected in the slot, an output end of the drive motor is fixedly connected to the other end of the limit gear, and transmission teeth are evenly and fixedly installed on the middle part of the upper surface of the limit box.
[0007] Preferably, a rope winding device is fixedly installed at one end of the hollow telescopic rod, and the rope winding device is movably connected to the suspension steel rope. The rope winding device includes a fixed limit plate, and a ball screw is symmetrically and movably sleeved on the fixed limit plate, and a ball sleeve is meshingly sleeved on the ball screw. A tensioning roller is symmetrically and movably installed on the left side of the interior of the fixed limit plate, and the two ends of the tensioning roller are respectively movably sleeved with two ball sleeves, and a guide roller is movably sleeved through an axis on the right part of the inner cavity of the fixed limit plate and located between the two tensioning rollers, and the suspension steel rope is respectively wound and connected with the two tensioning rollers and the guide roller.
[0008] Preferably, there are two casting molds, and the two limiting devices form a group, with two groups in total. Hollow telescopic rods are symmetrically fixedly installed at both ends of the limiting box, and the middle part of the hollow telescopic rod is movably connected to the suspension steel rope.
[0009] Preferably, the suspension device includes a connecting plate, which is fixedly connected to the bridge, and both ends of the connecting plate are respectively fixedly sleeved with connecting sleeves, the upper surface of the connecting sleeve is fixedly connected with a suspension rod, and the top end of the suspension rod is fixedly connected to the bottom surface of the arch beam.
[0010] The present invention has the following beneficial effects: 1. By setting the limit device and the toothed belt, the limit device is connected with the toothed belt through the limit gear on the upper surface of the arch beam to increase the limit, so as to avoid the limit device sliding down along the slope after being subjected to force when the gravity of the casting mold is pulled down, thereby increasing the stability of the bridge-building machine. At the same time, when the bridge deck casting at this stage is completed, the limit gear is driven to rotate by the driving motor, and then the limit device can move on the arch beam with the cooperation of the toothed belt, driving the casting mold to move toward the new area that needs to be cast, so as to facilitate the overall rapid loading and unloading, thereby accelerating the bridge construction rate.
[0011] 2. By setting up two casting molds, when the casting of the bridge deck in one stage is completed and waiting for solidification, the casting mold at the left arch beam that has already solidified will be moved to the right as a whole, effectively reducing the time for disassembly and reinstallation, and greatly facilitating the operation of construction personnel, further increasing the efficiency of bridge construction. At the same time, by setting up the suspension device, before pouring concrete, one end of the casting mold can be suspended and pulled by the suspension device to increase stability, and after pouring, the bridge can be suspended to achieve the supporting effect of the arch beam on the bridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a left side schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic top view of the structure of the present invention; Figure 3 It is a schematic diagram of the overall right side view of the structure of the present invention; Figure 4 The structure of the present invention Figure 3 Schematic diagram of the middle AA; Figure 5 The structure of the present invention Figure 3 Schematic diagram of the middle BB; Figure 6 The structure of the present invention Figure 3 Schematic diagram of the CC in the middle; Figure 7 It is a top view half-section schematic diagram of the rope winding device of the present invention.
[0013] In the figure: 1. bridge; 2. arch beam; 3. casting mold; 31. bottom plate; 32. side box; 33. pressure telescopic rod; 34. displacement telescopic rod; 35. suspension plate I; 36. suspension plate II; 37. movable roller; 38. positioning roller; 4. limit device; 41. limit box; 42. limit gear; 43. support plate; 44. hydraulic rod; 45. support spring; 46. hollow telescopic rod; 47. transmission gear; 48. drive motor; 5. suspension rope; 6. rope winding device; 61. fixed limit plate; 62. ball screw; 63. ball sleeve; 64. tension roller; 65. guide roller; 7. toothed belt; 8. suspension device; 81. connecting plate; 82. connecting sleeve; 83. suspension rod; 9. limit screw; 10. ratchet limit device. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.
[0015] See also Figure 1-Figure 4A kind of intelligent cable bridge-building machine for tied arch bridge, a casting mold 3 installed on the bridge 1 and a limit device 4 symmetrically and movably installed on the arch beam 2, the casting mold 3 includes a bottom plate 31, and a side box 32 is symmetrically and movably connected on the bottom plate 31 and located on the front and rear sides of the arch beam 2, and a pressing telescopic rod 33 is symmetrically fixedly installed on the bottom plate 31, and the extended end of the pressing telescopic rod 33 is fixedly connected to the side of the side box 32, and a displacement telescopic rod 34 is fixedly installed on the left part of the inner cavity of the side box 32, and the extended end of the displacement telescopic rod 34 is movably connected to a movable roller 37 located inside the side box 32, and the movable roller 37 A suspension plate Ⅰ35 is movably sleeved on the upper side, a positioning roller 38 is movably sleeved inside the right end of the side box 32, and a suspension plate Ⅱ36 is movably sleeved on the positioning roller 38. The left and right ends of the limiting device 4 are respectively movably sleeved with suspension steel ropes 5. The two ends of one suspension steel rope 5 are respectively fixedly connected to the two suspension plates Ⅰ35 located on the front and rear sides of the arch beam 2, and the two ends of the other suspension steel rope 5 are respectively fixedly connected to the two suspension plates Ⅱ36 located on the front and rear sides of the arch beam 2. A toothed belt 7 is fixedly installed in the middle of the upper surface of the arch beam 2 by screws, and the limiting device 4 is movably engaged with the toothed belt 7. The bottom surface of the arch beam 2 is fixedly connected to the toothed belt 7. The suspending device 8 is fixedly connected, and the suspending device 8 is respectively installed on the left and right sides of the casting mold 3. The suspending device 8 is fixedly connected to the arch beam 2. The front and rear ends of the suspending device 8 are threadedly sleeved with a limit screw 9, and the limit screw 9 is movably sleeved with the casting mold 3. The outer side of the limit device 4 is fixedly installed with a ratchet limit device 10. When laying bridge concrete, the mold is erected at the bottom through the casting mold 3. Two suspension steel ropes 5 pass through the limit device 4 above the arch beam 2, and finally are connected to the suspension plate I 35 and the suspension plate II 36 respectively, so as to pull the casting mold 3. , so that the casting mold 3 can be suspended, and then the two ends of the casting mold 3 are positioned and fixed again through the limiting screw 9 and the suspension device 8 inside the arch beam 2, so as to increase the bearing capacity of the casting mold 3, and the toothed belt 7 on the top of the arch beam 2 and the clamping of the limiting device 4 can effectively prevent the limiting device 4 from sliding down along the inclined surface after being stressed, thereby enhancing the stability of the bridge-building machine. In this process, the displacement telescopic rod 34 drives the movable roller 37 and the suspension plate I35 to move, and then adjusts the suspension point of the suspension plate I35 in the side box 32, so as to ensure that the casting mold 3 can receive a better suspension effect; See also Figure 5-Figure 7The limit device 4 includes a limit box 41, and a movable cavity is opened inside the limit box 41. A limit gear 42 is movably engaged in the movable cavity. One end of the limit gear 42 is fixedly sleeved with the ratchet of the ratchet limit device 10, and a support plate 43 is movably sleeved on the limit gear 42. The support plate 43 is movably engaged with the movable cavity, and the limit gear 42 is meshed with the toothed belt 7. Hydraulic rods 44 are symmetrically fixedly installed on the support plate 43 and on both sides of the limit gear 42. Support springs 45 are symmetrically and movably installed on the upper surface of the support plate 43. The two ends of the support spring 45 are respectively fixedly connected to the top of the movable cavity and the upper surface of the support plate 43, and are meshed and engaged with the toothed belt 7 through the limit gear 42. When the casting mold 3 is suspended, under the action of gravity, the limit device 4 is carried to be in close contact with the upper surface of the arch beam 2. At this time, the extension of the support plate 43 The pressure is resisted, thereby driving the limit gear 42 to be tightly engaged with the toothed belt 7, and under the action of the ratchet limit device 10, the limit device 4 is effectively prevented from sliding down on the inclined surface of the arch beam 2, ensuring that the arch beam 2 can provide sufficient support for the casting mold 3, so that the bridge construction project can proceed smoothly; a card slot is provided on the inner side of the limit box 41, and a drive motor 48 is movably engaged in the card slot. The output end of the drive motor 48 is fixedly connected to the other end of the limit gear 42, and a transmission tooth 47 is evenly fixedly installed in the middle of the upper surface of the limit box 41. When the bridge deck casting at this stage is completed, the limit gear 42 is driven to rotate by the drive motor 48, and then the limit device 4 can move on the arch beam 2 with the cooperation of the toothed belt 7, and drive the casting mold 3 to move toward the new area that needs to be cast, so as to facilitate the overall rapid loading and unloading, thereby accelerating the bridge construction rate; A rope winding device 6 is fixedly installed at one end of the hollow telescopic rod 46, and the rope winding device 6 is movably connected to the suspension steel rope 5. The rope winding device 6 includes a fixed limiting plate 61, and a ball screw 62 is symmetrically and movably sleeved on the fixed limiting plate 61, and a ball sleeve 63 is meshingly sleeved on the ball screw 62. A tensioning roller 64 is symmetrically and movably installed on the left side of the inner part of the fixed limiting plate 61, and the two ends of the tensioning roller 64 are respectively movably sleeved with two ball sleeves 63. A guide roller 65 is movably sleeved through an axis on the right part of the inner cavity of the fixed limiting plate 61 and located between the two tensioning rollers 64. The suspension steel rope 5 is respectively wound and connected with the two tensioning rollers 64 and the guide roller 65. The rope winding device 6 is installed between the two casting molds 3 to suspend The hanging steel rope 5 is wound, and the hanging steel rope 5 is wound from a tensioning roller 64 to a guide roller 65, and then to another tensioning roller 64. The tensioning roller 64 is locked by the ball screw 62 and the ball sleeve 63, so as to extend the length of the hanging steel rope 5, so that when it is transferred to the arched high place of the arch beam 2 in the later stage, by rotating the ball screw 62, the ball sleeve 63 drives the tensioning roller 64 to approach the guide roller 65, thereby releasing the restraint of the hanging steel rope 5, and pulling out the hanging steel rope 5 under the gravity of the casting mold 3, thereby ensuring that the casting mold 3 keeps moving horizontally, thereby ensuring that the bridge-building machine adapts to the entire bridge section, and there is no need to replace the hanging steel rope 5 of different lengths, thereby increasing the bridge-building rate; There are two casting molds 3, and the two limiting devices 4 form a group, and there are two groups in total. Hollow telescopic rods 46 are symmetrically fixedly installed at both ends of the limiting box 41. The middle part of the hollow telescopic rod 46 is movably connected with the suspension steel rope 5 and is used in conjunction with the two casting molds 3. When the pouring of a stage of the bridge deck is completed and waiting for solidification, the casting mold 3 on the left side where solidification has been completed is released, and the connection between the limiting screw 9 and the arch beam 2 and the casting mold 3 is untied. Subsequently, the limiting box 41 is driven to move to the right by the driving motor 48. When encountering the limiting device 4 on the right, the hydraulic rod 44 on the right side extends out to lift the right part of the limiting box 41, and then crosses the limiting device 4 on the right. 4, with the movement of the left limit device 4, the limit gear 42 is combined with the toothed belt 7 on the right limit device 4, so that the limit device 4 on the right can be turned over to reach the new pouring area. However, before moving, the hollow telescopic rod 46 needs to be extended to press the telescopic rod 33 to retract, thereby driving the side box 32 to move outward, driving the suspension steel rope 5 to move outward, and dislocating with the right suspension steel rope 5. Then the toothed belt 7 releases the suspension steel rope 5, so that the casting mold 3 descends, so that the two casting molds 3 are dislocated and reach the next stage of pouring position. In this way, the two casting molds 3 are used alternately to make full use of the cooling time of the concrete, thereby increasing the bridge construction speed and reducing the time cost;The suspension device 8 includes a connecting plate 81, which is fixedly connected to the bridge 1. The two ends of the connecting plate 81 are respectively fixedly sleeved with connecting sleeves 82, and the upper surface of the connecting sleeve 82 is fixedly connected with a hanging rod 83. The top of the hanging rod 83 is fixedly connected to the bottom surface of the arch beam 2. When building the bridge, the connecting sleeve 82 and the connecting plate 81 are directly suspended by the hanging rod 83, so that before pouring concrete, one end of the casting mold 3 is suspended and pulled by the suspension device 8. At the same time, the bridge 1 can also be suspended after pouring to achieve the supporting effect of the arch beam on the bridge 1. ;
Claims
1. An intelligent cable bridge-building machine for a tied arch bridge, comprising a casting mold (3) mounted on a bridge (1) and a limiter (4) symmetrically and movably mounted on an arch beam (2), characterized in that: The casting mold (3) comprises a bottom plate (31), and side boxes (32) are symmetrically and movably connected on the bottom plate (31) and located on the front and rear sides of the arch beam (2). A pressing telescopic rod (33) is symmetrically and fixedly installed on the bottom plate (31), and the extended end of the pressing telescopic rod (33) is fixedly connected to the side of the side box (32). A displacement telescopic rod (34) is fixedly installed on the left part of the inner cavity of the side box (32), and a movable roller (37) is movably connected to the extended end of the displacement telescopic rod (34) and located inside the side box (32), and a suspension plate I (35) is movably sleeved on the movable roller (37). A positioning roller (38) is movably sleeved on the right end of the side box (32), and a suspension plate II (36) is movably sleeved on the positioning roller (38). The left and right ends of the limiting device (4) are respectively movably sleeved with suspension steel ropes (5). The two ends of one suspension steel rope (5) are respectively fixedly connected to two suspension plates I (35) located at the front and rear sides of the arch beam (2), and the two ends of the other suspension steel rope (5) are respectively fixedly connected to two suspension plates II (36) located at the front and rear sides of the arch beam (2). A toothed belt (7) is fixedly installed on the middle part of the upper surface of the arch beam (2) by screws. The limit device (4) is movably engaged with the toothed belt (7). The bottom surface of the arch beam (2) is fixedly connected to a suspension device (8). The suspension device (8) is respectively installed on the left and right sides of the casting mold (3). The suspension device (8) is fixedly connected to the arch beam (2). The front and rear ends of the suspension device (8) are threadedly sleeved with a limit screw (9). The limit screw (9) is movably sleeved with the casting mold (3). The outer side surface of the limit device (4) is fixedly installed with a ratchet limit device (10).
2. The intelligent cable bridge-building machine for tied arch bridge according to claim 1, characterized in that: The limit device (4) comprises a limit box (41), a movable cavity is provided inside the limit box (41), a limit gear (42) is movably engaged in the movable cavity, one end of the limit gear (42) is fixedly sleeved with a ratchet of the ratchet limit device (10), a support plate (43) is movably sleeved on the limit gear (42), the support plate (43) is movably engaged with the movable cavity, the limit gear (42) is meshingly connected with a toothed belt (7), hydraulic rods (44) are symmetrically fixedly installed on the support plate (43) and located on both sides of the limit gear (42), a support spring (45) is symmetrically movably installed on the upper surface of the support plate (43), and two ends of the support spring (45) are respectively fixedly connected to the top of the movable cavity and the upper surface of the support plate (43).
3. The intelligent cable bridge-building machine for tied arch bridge according to claim 2, characterized in that: A slot is provided on the inner side of the limit box (41), a driving motor (48) is movably engaged in the slot, an output end of the driving motor (48) is fixedly connected to the other end of the limit gear (42), and a transmission gear (47) is evenly and fixedly mounted on the middle of the upper surface of the limit box (41).
4. The intelligent cable bridge-building machine for tied arch bridge according to claim 2, characterized in that: A rope winding device (6) is fixedly installed at one end of the hollow telescopic rod (46), and the rope winding device (6) is movably connected to the suspension steel rope (5). The rope winding device (6) includes a fixed limit plate (61), and a ball screw (62) is symmetrically and movably sleeved on the fixed limit plate (61), and a ball sleeve (63) is meshingly sleeved on the ball screw (62). A tensioning roller (64) is symmetrically and movably installed on the left side of the interior of the fixed limit plate (61), and the two ends of the tensioning roller (64) are respectively movably sleeved with two ball sleeves (63). A guide roller (65) is movably sleeved through an axis on the right part of the inner cavity of the fixed limit plate (61) and located between the two tensioning rollers (64). The suspension steel rope (5) is respectively wound and connected with the two tensioning rollers (64) and the guide roller (65).
5. The intelligent cable-stayed bridge-building machine for tied arch bridge according to claim 4 is characterized in that: There are two casting molds (3) in total, and two limit devices (4) form a group. There are two groups in total. Hollow telescopic rods (46) are symmetrically fixedly installed at both ends of the limit box (41), and the middle part of the hollow telescopic rod (46) is movably connected to the suspension steel rope (5).
6. The intelligent cable-stayed arch bridge-building machine according to claim 1 is characterized in that: The suspension device (8) comprises a connecting plate (81), the connecting plate (81) being fixedly connected to the bridge (1), connecting sleeves (82) being fixedly sleeved at both ends of the connecting plate (81), a suspension rod (83) being fixedly connected to the upper surface of the connecting sleeve (82), and a top end of the suspension rod (83) being fixedly connected to the bottom surface of the arch beam (2).