Swivel bridge rotation limiting device

Abstract

The utility model discloses a swivel bridge rotation limiting device, and relates to the technical field of bridges, the swivel bridge rotation limiting device comprises a mounting bottom plate, the lower surface of the mounting bottom plate is fixedly connected with a mounting groove, the outer side of the mounting groove is provided with a limiting mechanism, and the middle part of the lower surface of the mounting bottom plate is rotatably connected with a rotating column; the limiting mechanism comprises a fixing ring, and the inner side of the fixing ring is connected with the lower end of the mounting bottom plate in a sliding and inserted mode. By means of the limiting device, the rotation range of a bridge can be limited, and meanwhile impact caused by rotation inertia of the bridge can be effectively released through the damping shock absorber; therefore, damage to the limiting device caused by impact force generated by limiting is reduced, the service life of the limiting device can be effectively prolonged, and the bridge rotation limiting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, and specifically relates to a rotation limit device for a rotating bridge. Background Technique

[0002] A rotating bridge is a bridge constructed by the rotation method. The rotating construction of a bridge refers to a construction method in which the bridge structure is fabricated (cast or spliced) at a non-design axis position and then rotated into place. It can convert the operation above the obstacle into an operation on the shore or near the ground. According to the rotation direction of the bridge structure, it can be divided into the vertical rotation construction method, the horizontal rotation construction method (abbreviated as the vertical rotation method and the horizontal rotation method), and the method combining horizontal rotation and vertical rotation. Among them, the horizontal rotation method is the most widely used, mainly applied to situations where it is impossible to provide supports such as spanning canyons, rivers, railways, and highways. The rotating system of a rotating bridge consists of a lower turntable, an upper turntable, a spherical hinge, a slideway, and a traction system.

[0003] The publication number CN211395398U discloses a rotation limit device for a rotating bridge, including: a spherical hinge mechanism, which is arranged at the top of the pile cap steel bars; an annular slideway, which is arranged outside the spherical hinge mechanism with the center point of the spherical hinge mechanism as the center of the circle, and a plurality of installation holes are opened on the surface of the annular slideway; supporting feet, the number of the supporting feet is six, and they are equidistantly arranged at the top of the annular slideway with the center of the annular slideway as the midpoint; a template, which is circular and arranged in the middle of the outer ends of the six supporting feet; a limiting mechanism, the number of the limiting mechanisms is four, and the limiting mechanisms are equidistantly arranged in the inner cavity of the installation holes with the center of the annular slideway as the midpoint. For this rotation limit device of the rotating bridge, when the supporting feet rotate on the annular slideway, by controlling the telescopic cylinder, the limiting block can be used to position the supporting feet, which can avoid the situation of over-rotation of the bridge, and has strong practicability.

[0004] Although this patent avoids the situation of over-rotation of the bridge, when the bridge rotates, due to the inertia of rotation, the limit device will be subjected to the impact force generated by the rotation. Over time, the limit device will become loose and damaged, thereby shortening the service life of the limit device and causing the situation of over-rotation of the bridge to occur again.

[0005] Based on this, a rotation limit device for a rotating bridge is now provided, which can eliminate the drawbacks of the existing device. Content of the Utility Model

[0006] The purpose of the utility model is to provide a rotation limit device for a rotating bridge to solve the problems in the background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A rotational limit device for a swivel bridge, comprising a mounting base plate, wherein a mounting groove is fixedly connected to the lower surface of the mounting base plate, a limit mechanism is arranged outside the mounting groove, and a rotating column is rotatably connected to the middle of the lower surface of the mounting base plate;

[0009] The limit mechanism includes a fixed ring, the inner side of the fixed ring is slidably inserted and connected to the lower end of the mounting base plate, a plurality of fixing holes are formed on the surface of the fixed ring and are fixedly connected to the lower end of the mounting base plate through bolts, two blocking plates are symmetrically and fixedly connected to both sides of the fixed ring, a plurality of damping shock absorbers are fixedly connected to one side of the blocking plate, and the other end of the damping shock absorber is fixedly connected to a shock absorption plate.

[0010] Based on the above technical solutions, the present utility model also provides the following optional technical solutions:

[0011] In an optional solution: a plurality of reinforcing rings are arranged in an array below the fixed ring, and both ends of the reinforcing ring are respectively fixedly connected to one side of the adjacent blocking plate.

[0012] In an optional solution: the damping shock absorber includes an outer fixed cylinder, an inner sliding cylinder is slidably connected through the upper end of the outer fixed cylinder, and a shock absorption spring is arranged between the inner sliding cylinder and the outer fixed cylinder.

[0013] In an optional solution: damping shock absorption is arranged at the bottom inside the outer fixed cylinder, and both ends of the shock absorption spring are respectively fixedly connected to the adjacent inner sliding cylinder and the inner side of the outer fixed cylinder.

[0014] In an optional solution: a limit plate is fixedly connected to one side of the rotating column.

[0015] In an optional solution: a plurality of mounting holes are arranged in an array around the upper surface of the mounting base plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By means of the provided limit device, the present utility model can, while restricting the rotation range of the bridge, effectively release the impact brought by the rotational inertia of the bridge through the damping shock absorbers, thereby reducing the damage to the limit device caused by the impact force generated by the limit, and further effectively improving the service life of the limit device and enhancing the efficiency of the rotational limit of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the overall side structure of the present utility model;

[0020] Figure 3Schematic structural diagram of the limiting mechanism of the present utility model;

[0021] Figure 4 Schematic structural diagram of the damping shock absorber of the present utility model.

[0022] Annotation of reference numerals: 1, mounting base plate; 2, mounting groove; 3, rotating column; 4, limiting plate; 5, limiting mechanism; 6, fixing ring; 7, blocking plate; 8, damping shock absorber; 9, shock-absorbing plate; 10, reinforcing ring; 11, fixing hole; 12, outer fixing cylinder; 13, inner sliding cylinder; 14, shock-absorbing spring; 15, shock-absorbing damping; 16, mounting hole. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, as Figures 1-4 shown, a rotary bridge rotation limiting device includes a mounting base plate 1, the lower surface of the mounting base plate 1 is fixedly connected with a mounting groove 2, a limiting mechanism 5 is arranged outside the mounting groove 2, and a rotating column 3 is rotatably connected to the middle of the lower surface of the mounting base plate 1;

[0025] The limiting mechanism 5 includes a fixing ring 6, the inner side of the fixing ring 6 is slidably inserted and connected with the lower end of the mounting base plate 1, a plurality of fixing holes 11 are formed on the surface of the fixing ring 6 and are fixedly connected with the lower end of the mounting base plate 1 through bolts, two blocking plates 7 are symmetrically and fixedly connected to both sides of the fixing ring 6, a plurality of damping shock absorbers 8 are fixedly connected to one side of the blocking plate 7, and the other end of the damping shock absorber 8 is fixedly connected with a shock-absorbing plate 9;

[0026] In this embodiment, the rotation connection between the mounting base plate 1 and the rotating column 3 enables the bridge to achieve rotation, and then during the movement, the limiting mechanism 5 limits the rotation amplitude.

[0027] In one embodiment, as Figure 1 shown, a plurality of reinforcing rings 10 are arranged in an array below the fixing ring 6, both ends of the reinforcing ring 10 are respectively fixedly connected with one side of the adjacent blocking plate 7, and the fixing ring 6 and the mounting base plate 1 are fixed to provide stability for the limiting mechanism 5.

[0028] In one embodiment, as Figure 1 shown, the damping shock absorber 8 includes an outer fixing cylinder 12, an inner sliding cylinder 13 is slidably connected through the upper end of the outer fixing cylinder 12, and a shock-absorbing spring 14 is arranged between the inner sliding cylinder 13 and the outer fixing cylinder 12 to provide an effect of shock absorption and buffering of impact force.

[0029] In one embodiment, as Figure 1As shown, a shock damping 15 is provided at the inner bottom of the outer fixing cylinder 12, and both ends of the shock spring 14 are fixedly connected to the adjacent inner sliding cylinder 13 and the inner side of the outer fixing cylinder 12 respectively.

[0030] In one embodiment, as Figure 1 shown, a limiting plate 4 is fixedly connected to one side of the rotating column 3, and the limiting plate 4 and the shock damping plate 9 cooperate to achieve a limiting effect.

[0031] In one embodiment, as Figure 1 shown, a plurality of mounting holes 16 are arrayed and opened around the upper surface of the mounting base plate 1.

[0032] The above embodiment discloses a rotating limiting device for a swivel bridge. Among them, when the bridge rotates, it will drive the rotating column 3 to start rotating. Subsequently, the limiting plate 4 starts to move, and the limiting mechanism 5 is installed at a suitable limiting position. When the limiting plate 4 rotates to a specified position, it will be blocked by the shock damping plate 9 on the front side of the blocking plate 7, and the shock absorber 8 between the shock damping plate 9 and the blocking plate 7 effectively releases the impact force generated by the rotational inertia.

[0033] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotating limit device for a swivel bridge, comprising a mounting base plate (1), a mounting groove (2) is fixedly connected to the lower surface of the mounting base plate (1), a limiting mechanism (5) is arranged outside the mounting groove (2), and a rotating column (3) is rotatably connected to the middle of the lower surface of the mounting base plate (1); It is characterized in that: The limiting mechanism (5) includes a fixing ring (6), the inner side of the fixing ring (6) is slidably inserted and connected to the lower end of the mounting base plate (1), a plurality of fixing holes (11) are formed on the surface of the fixing ring (6) and are fixedly connected to the lower end of the mounting base plate (1) by bolts, two blocking plates (7) are symmetrically and fixedly connected to both sides of the fixing ring (6), a plurality of damping shock absorbers (8) are fixedly connected to one side of the blocking plate (7), and the other end of the damping shock absorber (8) is fixedly connected to a shock-absorbing plate (9).

2. The rotational limit device for a swivel bridge according to claim 1, characterized in that: A plurality of reinforcing rings (10) are arranged in an array below the fixing ring (6), and both ends of the reinforcing ring (10) are respectively fixedly connected to one side of the adjacent blocking plate (7).

3. The rotational limit device for a swivel bridge according to claim 1, wherein: The damping shock absorber (8) includes an outer fixing cylinder (12), an inner sliding cylinder (13) is slidably connected through the upper end of the outer fixing cylinder (12), and a shock-absorbing spring (14) is arranged between the inner sliding cylinder (13) and the outer fixing cylinder (12).

4. A rotational limiting device for a swivel bridge according to claim 3, characterized in that: A damping damper (15) is arranged at the inner bottom of the outer fixing cylinder (12), and both ends of the shock-absorbing spring (14) are respectively fixedly connected to the inner side of the adjacent inner sliding cylinder (13) and the outer fixing cylinder (12).

5. The rotational limit device for a swivel bridge according to claim 1, characterized in that: A limiting plate (4) is fixedly connected to one side of the rotating column (3).

6. The rotational limit device for a swivel bridge according to claim 1, wherein: A plurality of mounting holes (16) are arranged in an array around the upper surface of the mounting base plate (1).

Images