Flexible swivel bridge accurate in-position energy consumption adjusting device

Abstract

The utility model relates to a flexible accurate in-position energy consumption adjusting device for a swivel bridge, which is mounted at the position of a side pier cover beam and comprises a swivel base, a winch is arranged on the swivel base, an inhaul cable is arranged on the winch, the length of the inhaul cable is changed under the control of the winch, and the inhaul cable is connected with an inhaul cable node ring arranged at the bottom of a swivel main beam. The utility model has the advantages that the problems that when the rotation is nearly finished, the structure is changed from rotation to static and accurate in-position, the applied redundant kinetic energy is consumed and the structure is not damaged are solved, the problem of accurate adjustment of bridge rotation in-position is solved, and the problem of easy out-of-plane rotation during fine adjustment of a bridge body is solved; the safety problem and the precision control problem of rotation in-position can be safely and effectively solved; the device is simple in structure, low in cost, controllable in swivel in-position precision, safe and controllable in swivel energy consumption and capable of being recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of swivel bridge construction, in particular to a flexible energy-consuming adjustment device for precise positioning of a swivel bridge. Background Art

[0002] In recent years, with the popularization and application of the swivel construction technology, various bridge constructions involving railways and overpass roads often consider using the swivel construction technology to solve spatial conflicts. In traditional swivel construction, the beam body often over-rotates or rotates insufficiently. Since the swivel operation often occurs at the main pier, through the amplification effect of the main beam span, the micro-operations at the main pier are often amplified by dozens of times or more. Frequently, the beam body often lingers between over-rotation and insufficient rotation during the adjustment and positioning process. Due to the very low static and dynamic friction coefficients of the rotating hinge and the problem of rotational inertia, the beam body often cannot stop at the ideal position.

[0003] Random adjustment at the beam end will result in out-of-plane torque. Due to the force arm amplification effect of the beam body length, a very small adjustment force will form a large torque. Therefore, it is particularly important to ensure that the swivel beam stops rotating safely, adjusts its attitude safely, and can finely adjust its attitude after the swivel beam stops rotating.

[0004] The difficulties of the traditional swivel beam positioning method are mainly manifested in the following aspects: First, the rotation construction is at the pier position. Due to the amplification effect of the beam body span, it is unrealistic to adjust the beam end positioning accuracy through the swivel device at the pier. Second, due to the very low static and dynamic friction coefficients of the rotating hinge, once the beam body rotates, it will slide a certain distance before slowly stopping, and the sliding distance is uncontrollable. The beam end often moves back and forth at the precise positioning point and cannot stop at the ideal position. Third, the operating space at the main pier is limited, and the swivel power system often has only one direction, and once over-rotated, it cannot be corrected. Fourth, due to the extremely large weight of the swivel beam itself and the extremely large rotational kinetic energy, if a rigid beam stopping device is forcibly set at the precise positioning point, it is extremely easy to cause damage to the beam body and even overturn the main bridge structure.

[0005] For the above reasons, it is very important to quickly and stably stop the swivel beam near the precise positioning point and slowly and safely precisely position it. Summary of the Invention

[0006] The purpose of the utility model is to provide a flexible energy-consuming adjustment device for precise positioning of a swivel bridge according to the deficiencies of the above-mentioned prior art. The kinetic energy of the swivel beam is removed through the elastic deformation of the flexible cable, and the beam body is slowly and precisely positioned through the winch and the flexible cable, which can ensure that the beam body realizes millimeter-level precise positioning on the premise of only being subjected to horizontal forces.

[0007] The purpose of the utility model is achieved by the following technical solutions:

[0008] A flexible energy-consuming adjustment device for precise positioning of a rotating bridge, characterized in that it is installed at the side pier capping beam and includes a rotating base, on which a winch is provided, and a cable with variable length controlled by the winch is arranged on the winch. The cable is connected to a cable node ring arranged at the bottom of the rotating main beam.

[0009] A bracket is arranged on the rotating base, and a steering pulley is arranged at the top of the bracket. The cable applies a horizontal force to the rotating main beam through cooperation with the steering pulley.

[0010] The bracket adopts a triangular bracket, and the steering pulley is arranged at the top of the triangular bracket.

[0011] The upper surface of the side pier capping beam has an opening or a pre-embedded threaded base, and the rotating base is connected and fixed to the opening or the pre-embedded threaded base through fixing bolts, connecting the rotating base and the side pier capping beam into an integral structure.

[0012] The upper surface of the side pier capping beam has a plurality of openings or a plurality of pre-embedded threaded bases, and the rotating base is connected and fixed to the plurality of openings or the plurality of pre-embedded threaded bases in one-to-one correspondence through a plurality of fixing bolts.

[0013] The cable node ring is connected with a cable connecting plate, and the cable connecting plate is connected and fixed to the bottom of the rotating main beam through connecting bolts.

[0014] The advantages of the utility model are as follows:

[0015] 1) It is safer than the traditional stopping method. During the stopping process, the rotational kinetic energy of the main beam is removed through the adaptive elastic deformation of the flexible cable, greatly reducing the risks of beam body damage and structural overturning caused by forced stopping.

[0016] 2) Compared with the traditional method of adjusting the position of the pier column to position the rotating body, it is more accurate and effective to position the rotating body by correcting the position at the beam end.

[0017] 3) Compared with the traditional method of adjusting the position of the pier column to position the rotating body, the phenomenon of inertial drift of the beam body caused by step-by-step adjustment at the beam end is more controllable.

[0018] 4) Using the cable to control the rotating accuracy can effectively reserve the cable length and reduce the complexity of the control process.

[0019] 5) When controlling at the beam end, it can ensure that the force applied at the beam end is an absolute horizontal force, ensuring no out-of-plane torque and guaranteeing the safety and controllability of the deviation correction operation.

[0020] 6) Only bolt holes need to be reserved on the capping beam for installing the device, and the upper structure connection device uses the bolt holes reserved by the bearing. There is no need to modify the structure, avoiding weakening the cross-section of the upper structure.

[0021] 7) It is not only applicable to straight webs, but also to inclined webs and curved webs, with a wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an elevation schematic view of the installation structure of the present utility model;

[0023] Figure 2 It is a plan schematic view of the installation structure of the present utility model;

[0024] Figure 3 It is a plan schematic view of the installation position of the present utility model;

[0025] Figure 4 It is an elevation schematic view of the installation position of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The features of the present utility model and other related features are further described in detail below with reference to the accompanying drawings through embodiments for the understanding of those skilled in the same industry:

[0027] As Figures 1-4 shown, the reference numerals 1 - 13 in the figure respectively represent: rotating main girder 1, connecting bolt 2, cable connecting plate 3, cable connecting ring 4, bearing pad stone 5, embedded threaded base 6, rotating base 7, high-strength shear bolt 8, triangular bracket 9, winch 10, steering pulley 11, flexible cable 12, side pier capping beam 13.

[0028] Embodiment: As Figures 1 to 4 shown, in this embodiment, the flexible energy-consuming adjustment device for the precise positioning of the rotating bridge is used to gradually and safely remove the kinetic energy of the rotating main girder 1 during the rotating construction of the rotating main girder 1, and at the same time, the rotating main girder 1 is precisely positioned. As Figure 1 shown, the rotating main girder 1 is erected on the side pier capping beam 13 and is supported on the bearing pad stone 5 after the rotation and positioning of the rotating main girder 1.

[0029] Specifically, the device in this embodiment includes a rotating base 7 arranged on the upper surface of the side pier capping beam 13, and the rotating base 7 is fixedly connected to the side pier capping beam 13 to form an integral structure. Specifically, openings are provided or embedded threaded bases 6 are arranged at corresponding positions on the upper surface of the side pier capping beam 13, and the rotating base 7 is installed on the upper surface of the side pier capping beam 13 using high-strength shear bolts 8.

[0030] A triangular bracket 9 and a winch 10 are arranged on the swivel base 7, wherein the triangular bracket 9 is welded and fixed on the swivel base 7, and the winch 10 is installed in the middle of the triangular bracket 9. A flexible cable 12 with controllable length change is arranged on the winch 10, and a steering pulley 11 is arranged on the top of the triangular bracket 9; one end of the flexible cable 12 is connected to the winch 10, and the other end is connected to the cable connection ring 4 arranged at the bottom of the swivel main beam 1 after passing the steering pulley 11, so that the force applied by the flexible cable 12 on the swivel main beam 1 is a horizontal force.

[0031] In this embodiment, the cable connecting ring 4 is fixed to the bottom position of the swivel main beam 1 through the cable connecting plate 3. There is an opening at the bottom of the swivel main beam 1. The cable connecting plate 3 is fixed to the swivel main beam 1 using connecting bolts 2, so that the cable connecting ring 4 is installed to the bottom of the swivel main beam 1.

[0032] like Figure 3 and Figure 4 As shown, this embodiment, when used, includes the following method:

[0033] like Figure 3 As shown in the figure, B indicates the installation position of the device in this embodiment. When the rotating main beam 1 rotates into the projection plane of the side pier cap beam 13 and is about to rotate into place, the length of the flexible cable 12 is controlled and fixed to the cable connecting ring 4, and the elastic deformation of the flexible cable 12 is used to remove the kinetic energy of the rotating main beam 1 and slowly stop.

[0034] like Figure 4 As shown in the figure, A indicates the installation position of the device in this embodiment. When the rotation of the swivel main beam 1 stops, the position of the swivel main beam 1 is determined, and the length of the flexible cable 12 is adjusted by the winch 10. The position adjustment force is applied to the swivel main beam 1 through the flexible cable 12. After repeated adjustments, the swivel main beam 1 is controlled to be accurately in place, and the main pier ball joint and the temporary beam drop support of the side pier under the swivel main beam 1 are temporarily locked.

[0035] During the specific implementation of this embodiment: the device in this embodiment is temporarily installed on the upper surface of the side pier cap beam 13 to ensure that when the rotating main beam 1 is rotated into place, the elastic deformation of the flexible cable 12 can remove the excess kinetic energy applied by the rotating body. After the rotating main beam 1 of the T-shaped rigid frame is stabilized, the cable connecting plate 3 with the cable connecting ring 4 is installed by using the pre-embedded bolt holes of the support at the bottom of the rotating main beam 1. There is no need to open holes on the surface of the beam structure to avoid damage to the structure. Then, the steering pulley 11 and the winch 10 are used to fine-tune the length of the flexible cable 12. The beam posture of the rotating main beam 1 can be dynamically controlled. If it is understeering, the rotating device is used for adjustment. If it is oversteering, the winch 10 is used for fine-tuning. It can ensure that the rotating beam 1 is precisely positioned at the millimeter level under the premise of being subjected to only horizontal forces, and the beam can be safely moved from the rotating state to the stopped state.

[0036] This embodiment solves the problems that when the rotation is near the end, the structure changes from rotation to rest and is accurately positioned, the excess kinetic energy applied is consumed without damaging the structure, solves the problem of accurate adjustment of the bridge rotation in place, and solves the problem that out-of-plane rotation is likely to occur during the fine adjustment of the beam body. It is applicable to the rotation and accurate positioning of various bridge rotations, ensuring the safe and accurate completion of the rotation construction.

[0037] Although the above embodiments have described in detail the concept and embodiments of the purpose of the present invention with reference to the drawings, those of ordinary skill in the art can recognize that various improvements and transformations can still be made to the present invention without departing from the scope defined by the claims, so they will not be elaborated here one by one.

Claims

1. A flexible swivel bridge precise positioning energy dissipation adjustment device, characterized by: It is installed at the side pier cap beam, and includes a swivel base. A winch is provided on the swivel base. A cable whose length changes under its control is provided on the winch. The cable is connected to a cable node ring provided at the bottom of the swivel main beam.

2. According to claim 1, a flexible rotating bridge precise positioning energy dissipation adjustment device is characterized by: A bracket is arranged on the swivel base, a steering pulley is arranged on the top of the bracket, and the cable applies a horizontal force to the swivel main beam by cooperating with the steering pulley.

3. According to claim 2, a flexible rotating bridge precise positioning energy dissipation adjustment device is characterized by: The support is a triangular support, and the steering pulley is arranged on the top of the triangular support.

4. According to claim 1, a flexible rotating bridge precise positioning energy dissipation adjustment device is characterized by: The upper surface of the side pier cap beam has an opening or a pre-embedded threaded base, and the swivel base is connected and fixed to the opening or the pre-embedded threaded base by fixing bolts, so that the swivel base and the side pier cap beam are connected into an integral structure.

5. According to claim 4, a flexible rotating bridge precise positioning energy dissipation adjustment device is characterized by: The upper surface of the side pier cap beam has a plurality of openings or a plurality of pre-embedded threaded bases, and the swivel base is connected and fixed to the plurality of openings or the plurality of pre-embedded threaded bases in a one-to-one correspondence through a plurality of fixing bolts.

6. According to claim 1, a flexible rotating bridge precise positioning energy dissipation adjustment device is characterized by: The cable node ring is connected with a cable connecting plate, and the cable connecting plate is connected and fixed to the bottom of the rotating main beam through connecting bolts.

Images