Novel multifunctional double-hole continuous manufacturing bridge fabrication machine

Abstract

The invention relates to a novel multifunctional double-hole continuous manufacturing bridge fabrication machine, and belongs to the technical field of bridge fabrication machines. Comprising a main truss mechanism, a gantry crane mechanism, a driving system, a lower joist mechanism, a rear end supporting mechanism, a front end supporting mechanism and a riding wheel mechanism, the riding wheel mechanism is installed on the top face of a bridge pier, a sliding rail is arranged on the bottom face of the main truss mechanism and slidably connected with the riding wheel mechanism, and the gantry crane mechanism is slidably arranged on the top face of the main truss mechanism; the driving mechanism is installed at the tail end of the main truss mechanism and is in driving connection with the riding wheel mechanism, the rear-end supporting mechanism is installed at the tail end of the main truss mechanism, the front-end supporting mechanism is installed at the front end of the main truss mechanism, and the bottom end of the front-end supporting mechanism abuts against the top face of a pier. And the portal crane mechanism hoists the prefabricated box girders to perform sliding construction on the top surface of the main truss mechanism, and the prefabricated box girders are supported by the lower beam supporting mechanism to complete construction splicing of the prefabricated box girders. The bridge fabrication machine solves the problem that an existing bridge fabrication machine cannot switch different construction modes in the construction process.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge-building machines, and in particular relates to a novel multifunctional double-hole continuous bridge-building machine. Background Art

[0002] In complex marine environments, in order to connect cities and islands, most bridge cluster projects are adopted at home and abroad. This kind of long bridge cluster project involves the construction of standardized or variable span simply supported beam bridges with a length of several kilometers to more than ten kilometers.

[0003] Traditional bridge-building machines are mainly divided into downward-type, upward-type and non-self-propelled mobile formwork types. Most of these devices are optimized only for specific structural systems when they are designed. For example, during the construction of existing bridges, the design load and span of the bridge may be adjusted due to changes in project requirements or terrain conditions to meet higher load-bearing capacity or longer span requirements. Therefore, the simple supported beam structure system is usually used for construction at both ends of the bridge due to the small span, while the middle part of the bridge needs to have better earthquake resistance and wind resistance. Therefore, in order to enhance the structural performance of the bridge, it is necessary to convert it to a continuous beam structure system. In the existing continuous beam structure construction, a temporary support system needs to be built to support the prefabricated box beam. At the same time, the bridge-building machine is usually fixed on a specific track to cast and splice the various support points of the continuous beam. However, when constructing a simply supported beam, a temporary support system is not required. Therefore, whether it is from a continuous beam structure to a simply supported beam structure, the temporary support system needs to be disassembled or built to complete the system conversion, which leads to a longer construction period and reduced efficiency. However, the existing bridge-building machine lacks the ability to quickly switch structural systems in design. This results in the equipment being unable to efficiently convert different beam structures during the construction process, thus affecting the overall efficiency and economy of the construction. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a new multifunctional double-hole continuous bridge-building machine, which solves the problem that the existing bridge-building machine cannot switch between different construction modes during the construction process, thereby reducing construction efficiency and extending the construction cycle.

[0005] The objectives of the present invention can be achieved through the following technical solutions: a new type of multifunctional double-hole continuous bridge-building machine, including a main truss mechanism, a gantry mechanism, a driving system, a lower beam mechanism, a rear end support mechanism, a front end support mechanism and a roller mechanism, the roller mechanism is installed on the top surface of the pier, the bottom surface of the main truss mechanism is provided with a slide rail and is slidably connected to the roller mechanism, the gantry mechanism is slidably arranged on the top surface of the main truss mechanism, the driving mechanism is installed at the tail end of the main truss mechanism and is drivingly connected to the roller mechanism, the rear end support mechanism is installed at the tail end of the main truss mechanism, the front end support mechanism is installed at the front end of the main truss mechanism and the bottom end abuts against the top surface of the pier, the lower beam mechanism is installed on the bottom surface of the main truss mechanism and is located between the rear end support mechanism and the front end support mechanism, the gantry mechanism hoists the prefabricated box girder to slide on the top surface of the main truss mechanism for construction and undertakes the prefabricated box girder through the lower beam mechanism to complete the construction and splicing of the prefabricated box girder.

[0006] As a preferred technical solution of the present invention, the lower supporting beam mechanism includes two supporting beam assemblies symmetrically arranged along the axis of the main truss mechanism, one end of the supporting beam assembly is rotatably connected to the side wall of the main truss mechanism, and the other end is detachably connected to the other supporting beam assembly, and the bottom surface of the prefabricated box beam abuts against the top surfaces of the two supporting beam assemblies.

[0007] As a preferred technical solution of the present invention, the beam support assembly includes a hydraulic driver and a beam support plate, the beam support plate is an L-shaped structure, one end of the beam support plate is rotatably connected to the outer side wall of the main truss mechanism, and the other end is provided with a connecting ring, one end of the hydraulic driver is rotatably connected to the main truss mechanism, and the other end is rotatably connected to the outer side wall of the beam support plate close to one end of the main truss mechanism, and the beam support plate is detachably connected to the beam support plate in another beam support assembly through the connecting ring.

[0008] As a preferred technical solution of the present invention, the gantry crane mechanism includes a support frame, a sliding assembly, a suspension assembly and a sliding assembly. The sliding assembly is installed on the bottom surface of the support frame and is slidably connected to the top surface of the main truss. The suspension assembly is installed on the top of the support frame and hoists the prefabricated box girder. The sliding assembly is slidably connected to the bottom of the support frame and hoists the prefabricated box girder.

[0009] As a preferred technical solution of the present invention, the sliding assembly includes a driving motor and a pulley block. The driving motor is installed on the outer wall of the bottom of the support frame and drives the pulley block to rotate. The pulley block is installed on the bottom surface of the support frame and is slidably connected to the top surface of the main truss. The pulley block is provided with a brake for controlling the sliding position of the pulley block.

[0010] As a preferred technical solution of the present invention, the suspension assembly includes a rope retractor and a suspension arm. The rope retractor is installed on the side wall of the support frame and controls the lifting and lowering of the suspension arm through ropes. The suspension arm is provided with two groups and is used to fix the prefabricated box beam.

[0011] As a preferred technical solution of the present invention, the sliding suspension assembly includes a sliding suspension arm and a sliding suspension motor. The sliding suspension arm is slidably connected to the bottom of the support frame, the sliding suspension motor is installed on the side wall of the sliding suspension arm, and a fixing ring is provided on the bottom surface of the sliding suspension arm, and the fixing ring is used to fix the prefabricated box girder.

[0012] As a preferred technical solution of the present invention, the front end support mechanism includes a telescopic rod, and the front end support mechanism is detachably connected to the top surface of the pier through the telescopic rod.

[0013] As a preferred technical solution of the present invention, it also includes a wind speed sensor and a PLC automatic control system, and the PLC automatic control system controls the construction speed of the hoisting construction according to the detection result of the wind speed sensor.

[0014] The beneficial effects of the present invention are as follows: the prefabricated box beams are continuously hoisted and constructed by a gantry crane mechanism; when a bridge with a continuous beam structure is constructed, the prefabricated box beams are supported by a lower supporting beam mechanism to provide a stable temporary supporting structure for the construction of the continuous beam; and the prefabricated box beams can also be hoisted between two adjacent bridge piers by the gantry crane mechanism to construct a simply supported beam, thereby avoiding the long construction period and low efficiency during the switching between the continuous beam structure system and the simply supported beam structure system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a front view structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the side structure of the door hanging mechanism of the present invention;

[0018] Figure 3 It is a side view structural schematic diagram of the lower support beam mechanism of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the rear end support mechanism of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the front end support mechanism of the present invention;

[0021] Main component symbols

[0022] In the figure: 1. main truss mechanism; 2. door hanging mechanism; 21. support frame; 22. sliding assembly; 23. suspension assembly; 24. sliding assembly; 3. drive system; 4. lower support beam mechanism; 41. hydraulic drive; 42. support beam plate; 43. connecting ring; 5. rear end support mechanism; 6. front end support mechanism; 61. telescopic rod; 7. support wheel mechanism. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-Figure 5 The present embodiment provides a novel multifunctional double-hole continuous bridge-building machine, comprising a main truss mechanism 1, a gantry mechanism 2, a driving system 3, a lower supporting beam mechanism 4, a rear end supporting mechanism 5, a front end supporting mechanism 6 and a supporting wheel mechanism 7. In the process of bridge construction, it is necessary to build prefabricated box beams between the constructed piers to complete the construction of the bridge deck, and the construction process of the continuous beam requires the prefabricated box beams to form a whole. Therefore, it is necessary to build a temporary support system to support the prefabricated box beams to cast the connection nodes between the box beams to ensure the stability of the structure. At the same time, it is also necessary to ensure that the installation accuracy of the prefabricated box beams during the casting process meets the predetermined requirements. Therefore, in the construction process of the continuous beam, the gantry mechanism 2 is slidably set on the top surface of the main truss mechanism 1, and then the front end supporting mechanism 6 and the rear end supporting mechanism 6 are set at the front and rear ends of the main truss mechanism 1. The end support mechanism 5 temporarily supports and fixes the main truss mechanism 1 on the top surface of the pier, and then hoists the prefabricated box girder to the lower support beam mechanism 4 installed on the bottom surface of the main truss mechanism 1 through the gantry crane mechanism 2 for temporary support. The lower support beam mechanism 4 temporarily supports the prefabricated box girder, so that the stability of the prefabricated box girder during construction and the accuracy of the prefabricated box girder during installation can be ensured when the prefabricated box girder is cast at the node. During the construction of the continuous beam, the supporting roller mechanism 7 is fixed on the top surface of the pier, and the driving mechanism installed at the tail end of the main truss mechanism 1 drives the supporting roller mechanism 7 to rotate to move on the supporting roller mechanism 7 with the slide rail on the bottom surface of the main truss mechanism 1, so that the main truss mechanism 1 can continuously move along the pier, thereby continuously hoisting the prefabricated box girder to complete the construction process of the continuous beam.

[0025] During the construction of the simply supported beam structure system, the prefabricated box beam can be directly hoisted between two adjacent piers through the portal crane mechanism 2 to complete the hoisting process of the prefabricated box beam, thereby completing the construction of the simply supported beam.

[0026] The prefabricated box girders are continuously hoisted through the gantry crane mechanism 2. When a bridge with a continuous beam structure is being constructed, the prefabricated box girders are supported by the lower supporting beam mechanism 4 to provide a stable temporary supporting structure for the construction of the continuous beam. At the same time, the prefabricated box girders can also be hoisted between two adjacent piers through the gantry crane mechanism 2 to construct a simply supported beam, thereby avoiding the long construction period and low efficiency during the switching between the continuous beam structure system and the simply supported beam structure system.

[0027] The lower supporting beam mechanism 4 receives the prefabricated box beam to ensure that the prefabricated box beam can remain stable during the construction process and ensure the construction accuracy. Since the construction length of the cross-sea bridge is long, the bridge-building machine needs to be constantly moved to ensure the smooth progress of the construction. During the movement of the bridge-building machine, in order to avoid interference between the lower supporting beam mechanism 4 and the bridge piers and affect the normal movement of the bridge-building machine, in this embodiment, the lower supporting beam mechanism 4 includes two supporting beam assemblies symmetrically arranged along the axis of the main truss mechanism 1, one end of the supporting beam assembly is rotatably connected to the side wall of the main truss mechanism 1, and the other end is rotatably connected to the other supporting beam assembly. Disassemble the connection, the bottom surface of the prefabricated box girder abuts against the top surfaces of the two support beam assemblies. After the construction of the bridge end below the current main truss mechanism 1 is completed, the main truss mechanism 1 needs to slide on the supporting wheel mechanism 7 to carry out the next stage of bridge construction. Therefore, in order to avoid interference between the lower support beam mechanism 4 and the bridge pier during the movement of the main truss mechanism 1, the two support beam assemblies are respectively rotated to the outside of the main truss mechanism 1, so that the support beam assembly will not be within the range of the bridge pier during the movement of the main truss mechanism 1, thereby avoiding interference between the support beam assembly and the bridge pier affecting the normal movement of the main truss mechanism 1.

[0028] In order to ensure that the joist assembly can smoothly complete the rotation to ensure that the main truss mechanism 1 can move smoothly, and at the same time ensure that the joist assembly can maintain a good supporting effect when connected, in one embodiment, the joist assembly includes a hydraulic driver 41 and a joist plate 42, the joist plate 42 is an L-shaped structure, one end of the joist plate 42 is rotatably connected to the outer side wall of the main truss mechanism 1, and the other end is provided with a connecting ring 43, one end of the hydraulic driver 41 is rotatably connected to the main truss mechanism 1, and the other end is rotatably connected to the outer side wall of the joist plate 42 close to one end of the main truss mechanism 1, and the joist plate 42 is connected to the joist assembly in another joist assembly through the connecting ring 43 The beam plate 42 is detachably connected. When the main truss mechanism 1 needs to be moved, the connecting parts in the connecting ring 43 are removed, and then the hydraulic driver 41 contracts to allow the beam support plate 42 to flip outward with the connection point with the outer wall of the main truss mechanism 1 as a fulcrum, thereby moving away from the distance between the piers, allowing the main truss mechanism 1 to move smoothly. When the main truss mechanism 1 is moved into place, the hydraulic driver 41 extends out to drive the beam support plate 42 to reset, and then the two connecting rings 43 are fixed, thereby ensuring that the beam support plate 42 can remain stable, allowing the prefabricated box beam to fall stably on the beam support plate 42, thereby completing the construction of the continuous beam.

[0029] In order to improve the construction efficiency of the bridge-building machine, in one embodiment, the gantry mechanism 2 includes a support frame 21, a sliding assembly 22, a suspension assembly 23 and a sliding assembly 24. The sliding assembly 22 is installed on the bottom surface of the support frame 21 and is slidably connected to the top surface of the main truss. The suspension assembly 23 is installed on the top of the support frame 21 and hoists the prefabricated box girder. The sliding assembly 24 is slidably connected to the bottom of the support frame 21 and hoists the prefabricated box girder. In the process of hoisting the prefabricated box girder, the prefabricated box girder is first hoisted by the suspension assembly 23, and then the other prefabricated box girder is hoisted by the sliding assembly 24, so that the bridge-building machine can hoist two groups of prefabricated box girders or two groups of prefabricated box girders with different spans at one time during the construction process, so that two-hole prefabricated box girders can be installed in one hoisting process, thereby improving the construction efficiency.

[0030] In order to ensure the accuracy of the gantry mechanism 2 during the sliding process, thereby maintaining the installation accuracy of the prefabricated box girder, in one embodiment, the sliding assembly 22 includes a driving motor and a pulley block. The driving motor is installed on the outer wall of the bottom of the support frame 21 and drives the pulley block to rotate. The pulley block is installed on the bottom surface of the support frame 21 and is slidably connected to the top surface of the main truss. The pulley block is provided with a brake for controlling the sliding position of the pulley block. After the prefabricated box girder is hoisted, the driving motor drives the pulley block to slide on the top surface of the main truss mechanism 1, and controls the sliding position of the pulley block through the brake to avoid deviations in the sliding position of the gantry mechanism 2, thereby causing deviations in the installation position of the prefabricated box girder.

[0031] Since the gantry crane mechanism 2 needs to hoist two groups of prefabricated box girders, in order to ensure the smooth hoisting of the prefabricated box girders, in one embodiment, the suspension assembly 23 includes a rope retractor and a suspension arm. The rope retractor is installed on the side wall of the support frame 21 and controls the lifting and lowering of the suspension arm through ropes. The suspension arm is provided with two groups and is used to fix the prefabricated box girders. When the prefabricated box girders are hoisted by the suspension assembly 23, in order to avoid interference with the prefabricated box girders hoisted by the sliding assembly 24, the rope retractor is used to control the suspension arm to descend to hoist the prefabricated box girders, and then the suspension arm is raised to the top of the gantry crane mechanism 2 to shorten the rope connected to the suspension arm as much as possible to ensure that the suspension arm will not shake too much during the movement of the gantry crane mechanism 2, thereby causing the gantry crane mechanism 2 to become unstable during the movement.

[0032] Since the prefabricated box girder hoisted by the sliding assembly 24 is close to the lower supporting beam mechanism 4 and the sliding distance is short, in order to improve the hoisting efficiency, in one embodiment, the sliding assembly 24 includes a sliding arm and a sliding motor, the sliding arm is slidably connected to the bottom of the support frame 21, the sliding motor is installed on the side wall of the sliding arm, and a fixing ring is provided on the bottom surface of the sliding arm, and the fixing ring is used to fix the prefabricated box girder. When the prefabricated box girder is hoisted by the sliding assembly 24, the fixing ring is fixed to the prefabricated box girder, and then the sliding motor drives the sliding arm to slide to hoist the prefabricated box girder, so that the gantry mechanism 2 can move smoothly during the movement, avoiding the interference between the prefabricated box girder and the bridge pier. Therefore, the sliding motor controls the sliding distance of the sliding arm in a small range to hoist the prefabricated box girder, while avoiding the interference between the prefabricated box girder and the bridge pier. In addition, the small sliding distance reduces the distance that the sliding assembly 24 needs to move during the hoisting process, thereby improving the hoisting efficiency.

[0033] In order to ensure that the main truss mechanism 1 can remain stable during the hoisting process of the gantry crane mechanism 2, and at the same time, the main truss mechanism 1 can move smoothly during the movement, in one embodiment, the front end support mechanism 6 includes a telescopic rod 61, and the front end support mechanism 6 is detachably connected to the top surface of the pier through the telescopic rod 61. When the gantry crane mechanism 2 is hoisting the prefabricated box girder, the telescopic rod 61 will remain in an extended state to be fixedly connected to the pier, thereby ensuring that the front end support mechanism 6 can provide a good support effect for the main truss mechanism 1, and when the main truss mechanism 1 needs to move, the telescopic rod 61 will be in a retracted state, so that the main truss mechanism 1 can slide smoothly on the supporting roller mechanism 7 to carry out the next stage of bridge construction. At the same time, when the main truss mechanism 1 moves into place, the rear end support mechanism 5 and the supporting roller mechanism 7 will lock the supporting roller and the slide rail, so that the slide rail will not slide in the supporting roller mechanism 7. At the same time, the front end support mechanism 6 is used to provide additional support force and fixed points for the main truss mechanism 1, thereby avoiding the gantry crane mechanism 2 from shaking due to the loosening of the main truss mechanism 1 during the sliding process.

[0034] In order to achieve automatic early warning and shutdown control under strong wind conditions and improve the safety and reliability of the bridge-building machine, in one embodiment, it also includes a wind speed sensor and a PLC automatic control system. The PLC automatic control system controls the construction speed of the hoisting construction according to the detection results of the wind speed sensor. When the wind speed sensor detects that the external wind force reaches the threshold range, the PLC automatic control system will gradually control the hoisting speed of the bridge-building machine. As the wind force detected by the wind speed sensor continues to increase, the bridge-building machine is shut down to avoid shaking or even collapse due to the influence of external forces during the hoisting process.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A new type of multifunctional double-hole continuous bridge-building machine, characterized by: It includes a main truss mechanism, a gantry mechanism, a driving system, a lower supporting beam mechanism, a rear end supporting mechanism, a front end supporting mechanism and a roller mechanism, wherein the roller mechanism is installed on the top surface of the pier, the bottom surface of the main truss mechanism is provided with a slide rail and is slidably connected to the roller mechanism, the gantry mechanism is slidably arranged on the top surface of the main truss mechanism, the driving mechanism is installed at the tail end of the main truss mechanism and is drivingly connected to the roller mechanism, the rear end supporting mechanism is installed at the tail end of the main truss mechanism, the front end supporting mechanism is installed at the front end of the main truss mechanism and the bottom end abuts against the top surface of the pier, the lower supporting beam mechanism is installed on the bottom surface of the main truss mechanism and is located between the rear end supporting mechanism and the front end supporting mechanism, the gantry mechanism hoists the prefabricated box girder and slides on the top surface of the main truss mechanism for construction and undertakes the prefabricated box girder through the lower supporting beam mechanism to complete the construction and splicing of the prefabricated box girder.

2. According to claim 1, a new multifunctional double-hole continuous bridge-building machine is characterized by: The lower supporting beam mechanism includes two supporting beam assemblies symmetrically arranged along the axis of the main truss mechanism, one end of the supporting beam assembly is rotatably connected to the side wall of the main truss mechanism, and the other end is detachably connected to another supporting beam assembly, and the bottom surface of the prefabricated box beam abuts against the top surfaces of the two supporting beam assemblies.

3. The novel multifunctional double-hole continuous bridge-building machine according to claim 2 is characterized in that: The joist assembly includes a hydraulic driver and a joist plate. The joist plate is in an L-shaped structure. One end of the joist plate is rotatably connected to the outer side wall of the main truss mechanism, and the other end is provided with a connecting ring. One end of the hydraulic driver is rotatably connected to the main truss mechanism, and the other end is rotatably connected to the outer side wall of the joist plate close to one end of the main truss mechanism. The joist plate is detachably connected to the joist plate in another joist assembly through the connecting ring.

4. The novel multifunctional double-hole continuous bridge-building machine according to claim 1 is characterized in that: The door hanging mechanism includes a support frame, a sliding assembly, a suspension assembly and a sliding assembly. The sliding assembly is installed on the bottom surface of the support frame and is slidably connected to the top surface of the main truss. The suspension assembly is installed on the top of the support frame and lifts the prefabricated box beam. The sliding assembly is slidably connected to the bottom of the support frame and lifts the prefabricated box beam.

5. The novel multifunctional double-hole continuous bridge-building machine according to claim 4 is characterized in that: The sliding assembly includes a driving motor and a pulley block. The driving motor is installed on the outer wall of the bottom of the support frame and drives the pulley block to rotate. The pulley block is installed on the bottom surface of the support frame and is slidably connected to the top surface of the main truss. The pulley block is provided with a brake for controlling the sliding position of the pulley block.

6. The novel multifunctional double-hole continuous bridge-building machine according to claim 4 is characterized in that: The suspension assembly includes a rope retractor and a suspension arm. The rope retractor is installed on the side wall of the support frame and controls the lifting and lowering of the suspension arm through ropes. The suspension arm is provided with two groups and is used to fix the prefabricated box beam.

7. The novel multifunctional double-hole continuous bridge-building machine according to claim 4 is characterized by: The sliding suspension assembly includes a sliding suspension arm and a sliding suspension motor. The sliding suspension arm is slidably connected to the bottom of the support frame. The sliding suspension motor is installed on the side wall of the sliding suspension arm. A fixing ring is provided on the bottom surface of the sliding suspension arm, and the fixing ring is used to fix the prefabricated box beam.

8. The novel multifunctional double-hole continuous bridge-building machine according to claim 1 is characterized by: The front end support mechanism comprises a telescopic rod, and the front end support mechanism is detachably connected to the top surface of the pier through the telescopic rod.

9. The novel multifunctional double-hole continuous bridge-building machine according to claim 1 is characterized in that: It also includes a wind speed sensor and a PLC automatic control system, and the PLC automatic control system controls the construction speed of the hoisting construction according to the detection result of the wind speed sensor.

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