Over-rotation prevention device for bridge rotation

Abstract

The utility model relates to the technical field of bridge engineering, and particularly discloses an over-rotation prevention device for bridge rotation, which is characterized by comprising a lower disc bearing platform, a lower spherical hinge is fixedly arranged on the lower disc bearing platform, and an upper spherical hinge matched with the lower spherical hinge is arranged on the lower spherical hinge; an upper turntable is arranged on the upper spherical hinge, a graduated scale is arranged on the side wall of the upper turntable, I-shaped steel is arranged on the sucker bearing platform, and an angle pointer is arranged on the I-shaped steel and corresponds to the graduated scale; a plurality of supporting feet are arranged at the bottom of the upper rotating disc, grooves are formed below the supporting feet, sliding ways are arranged in the grooves, and the sliding ways are connected with the supporting feet in a matched mode. And the actual requirements of bridge swivel construction can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to an anti-overrotation device for bridge rotation. Background Technique

[0002] In modern bridge construction, the rotation construction technology is widely used because of its unique advantages. The bridge rotation construction can quickly and efficiently complete the construction of the bridge without affecting the existing traffic. However, during the bridge rotation process, it is crucial to ensure the precise control of the rotation angle to prevent the occurrence of overrotation.

[0003] At present, the bridge rotation construction faces some challenges. On the one hand, the traditional anti-overrotation methods have certain limitations. For example, simply relying on manual monitoring and controlling the rotation angle not only has difficulty in ensuring accuracy but also has a slow response speed and cannot prevent overrotation in a timely and effective manner. Although some mechanical devices can play a role in preventing overrotation to a certain extent, they have complex structures, inconvenient installation, and low reliability.

[0004] On the other hand, with the continuous development of bridge construction, the requirements for the accuracy and safety of rotation construction are getting higher and higher. Bridges with large spans and complex structures are emerging continuously, which puts forward higher requirements for the anti-overrotation device. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the technical problem solved by the utility model is to provide an anti-overrotation device for bridge rotation, which improves the precise control of the rotation angle and effectively prevents overrotation, improves the accuracy, stability, safety, and operability of rotation, and can better meet the actual needs of bridge rotation construction.

[0006] To solve the above problems, the technical solution adopted by the utility model is: an anti-overrotation device for bridge rotation, characterized in that: it includes a lower disk bearing platform, a lower spherical hinge is fixedly arranged on the lower disk bearing platform, and an upper spherical hinge is arranged on the lower spherical hinge and is matched with the lower spherical hinge; an upper rotating disk is arranged on the upper spherical hinge, a scale is arranged on the side wall of the upper rotating disk, an I-beam is arranged on the sucker bearing platform, and an angle pointer is arranged on the I-beam and corresponds to the scale; a plurality of support feet are arranged at the bottom of the upper rotating disk, a groove is arranged below the support feet, a slideway is arranged in the groove, and the slideway is connected with the support feet in a matching manner.

[0007] The beneficial effects produced by this solution are as follows: The lower spherical hinge and the upper spherical hinge provided on the lower turntable platform cooperate with each other, providing a stable and reliable rotation foundation for the bridge rotation. A scale is provided on the side wall of the upper turntable, and an I-beam with an angle pointer is correspondingly provided on the sucker platform, which can visually and accurately monitor the rotation angle in real time. This is conducive to the operator timely grasping the rotation process, improving the accuracy and convenience of monitoring the rotation angle. The support feet provided at the bottom of the upper turntable are connected to the slideways in the lower grooves, ensuring the smoothness and guiding property during the rotation process, and at the same time enhancing the overall structural stability of the device, effectively avoiding problems such as shaking or deviation during the rotation process, and ensuring the quality and safety of the rotation construction. Through the synergistic effect of these structures, it provides a strong guarantee for the smooth progress and precise control of the bridge rotation construction, reduces the risk of over-rotation, and improves the safety and reliability of the project.

[0008] Further, the lower spherical hinge is provided with an arc-shaped depression, and one end of the upper spherical hinge connected to the lower spherical hinge is provided with an arc-shaped protrusion. The cooperation of the arc-shaped depression of the lower spherical hinge and the arc-shaped protrusion of the upper spherical hinge makes the contact area between the two larger and the fit closer, effectively enhancing the stability and smoothness of rotation, reducing the jamming and shaking during the rotation process, ensuring the smooth progress of the rotation process. The arc-shaped structure is conducive to the uniform transmission and dispersion of force, reducing local stress concentration, thereby prolonging the service life of the device, being able to better bear various acting forces generated during the rotation process, enhancing the load-bearing capacity and anti-deformation ability of the upper turntable. At the same time, to a certain extent, it can also reduce friction loss, lower maintenance costs and energy consumption.

[0009] Further, a polytetrafluoroethylene plate is provided at the upper end of the slideway, and the polytetrafluoroethylene plate is attached to the slideway. The polytetrafluoroethylene plate has an extremely low static friction coefficient. After being attached to the slideway, it can significantly reduce the friction force when the support feet move in the slideway, making the rotation process smoother, reducing energy loss, being conducive to improving the rotation efficiency, reducing the adverse effects of possible impacts and vibrations generated during the rotation process on the device, and further enhancing the stability and safety of the entire rotation system.

[0010] Further, there are eight support feet, and the eight support feet are arranged in a ring at the bottom of the lower turntable. The ring arrangement of the eight support feet provides a more balanced distribution of the supporting force, can better share the load generated during the rotation process, enhance the stability of the lower turntable, make the entire structure more stable and reliable, reduce the risk of tilting or shaking. The ring arrangement ensures that there is sufficient support in all directions. No matter in which direction the bridge rotates, it can be effectively supported and guided, which is conducive to ensuring the smoothness and accuracy of the rotation action.

[0011] Furthermore, a pin is provided at the center position of the upper ball joint and the lower ball joint, and the pin is rotatably connected to the upper ball joint and the lower ball joint. The setting of the pin provides a clear rotation axis for the relative rotation of the upper ball joint and the lower ball joint, thereby ensuring the accuracy and stability of the rotation, allowing the rotation process to be carried out along a predetermined axis, thereby improving the accuracy of the rotation. The pin can limit unnecessary displacement and shaking of the upper ball joint and the lower ball joint in other directions, thereby further enhancing the stability of the entire rotating structure.

[0012] Furthermore, the scale is arranged at the lower end position of the upper turntable. Being located at the lower end position, it can be closer to the actual rotation plane of the swivel, and can more directly and accurately measure and reflect the angle change of the swivel, reduce the measurement error caused by position deviation, and improve the accuracy of angle measurement. Being arranged at the lower end position, it is more convenient for the operator to observe and read the scale without having to excessively raise the head or change the observation angle to a large extent, so that the swivel angle information can be obtained more timely and conveniently, so as to make accurate adjustments and controls according to actual conditions, which helps to improve the efficiency and safety of construction operations.

[0013] Furthermore, a lower limit plate and an upper limit plate are respectively provided on the lower plate support platform and the upper turntable. A limit setting is provided between the upper limit plate and the lower limit plate. Such a limit setting can effectively limit excessive rotation of the upper turntable relative to the lower plate support platform, clarify the maximum allowable range of rotation, prevent structural damage or safety hazards caused by excessive rotation, and ensure the safety of the rotation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] The figure marks in the drawings of the specification include: lower plate support 1, groove 2, polytetrafluoroethylene plate 3, support foot 4, dial 5, upper turntable 6, upper plate support 7, I-beam 8, angle pointer 9, slide 10, lower ball joint 11, upper ball joint 12, pin 13, upper limit plate 14, lower limit plate 15.

[0018] Embodiment 1 is basically as attached Figures 1-3As shown: The anti-overrotation device for bridge rotation includes a lower platform bearing platform 1. A lower spherical hinge 11 is fixedly installed on the lower platform bearing platform 1. The lower spherical hinge 11 is arranged in an arc-shaped concave structure. A groove 2 arranged in a ring shape is provided on one side of the lower spherical hinge 11. A slideway 10 is arranged in the groove 2. A polytetrafluoroethylene plate 3 is arranged at the upper end of the slideway 10. The polytetrafluoroethylene plate 3 is arranged in fit with the slideway 10. A pin shaft 13 is arranged at the central position of the lower spherical hinge 11. An upper spherical hinge 12 is arranged directly above the small spherical hinge. The upper spherical hinge 12 is arranged in a convex structure. The upper spherical hinge 12 is arranged in cooperation with the lower spherical hinge 11 and is rotatably connected through the pin shaft at the central position.

[0019] An upper turntable 6 is arranged on the upper spherical hinge 12. Eight support feet 4 are arranged at the bottom position of the upper turntable 6. The support feet 4 are arranged in a ring shape at the bottom of the turntable and are fixedly connected to the upper turntable 6. The support feet 4 are arranged directly above the polytetrafluoroethylene plate 3. A scale is arranged at a position near the bottom of the upper turntable 6. The scale uses a total station to accurately lay out and determine the longitudinal and transverse axes of the upper and lower turntables and the longitudinal and transverse axes of the bridge position corresponding to the designed rotation of the pier center. A fixed pointer device is installed at the position corresponding to the longitudinal axis of the bridge before rotation on the lower turntable. The corresponding position on the upper turntable 6 is the 0 scale. The rotation angle scale values are marked in the opposite direction of rotation. The scale values are pasted on the outer edge of the upper turntable 6 using machine-printed self-adhesive tape. The scale indicating ruler is printed according to a 1:1 ratio. The distance of the ruler corresponding to each degree of the cable tray should be equal to the arc length value of the corresponding outer edge of the cable tray.

[0020] An I-beam 8 is fixedly arranged on the lower platform bearing platform 1. An angle pointer 9 is fixedly arranged on the I-beam 8. The angle pointer 9 is arranged corresponding to the scale on the upper turntable 6. An upper limit plate 14 and a lower limit plate 15 are respectively fixedly arranged on the lower platform bearing platform 1 and the upper turntable 6. The upper limit plate 14 and the lower limit plate 15 are in contact and limited after rotation, so as to prevent the turntable from rotating over during the rotation process.

[0021] During the actual rotation operation process, through the rotation of the upper spherical hinge 12 and the lower spherical hinge 11 and the movement of the support feet 4 in the slideway 10, combined with the indication of the angle pointer 9 and the scale plate 5, the rotation angle can be accurately controlled. The existence of the polytetrafluoroethylene plate 3 ensures smooth movement and low friction. The ring-shaped arrangement of the eight support feet 4 provides stable support. The pin shaft 13 ensures the smooth progress of rotation. The upper limit plate 14 and the lower limit plate 15 effectively avoid the risks brought by overrotation. The entire device plays a reliable role during the bridge rotation process, ensuring the safety and high efficiency of the rotation construction.

[0022] The above has described the embodiments of the present utility model in detail with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. Anti-over-rotation device for bridge rotation, characterized in that: It includes a lower plate supporting platform, on which a lower ball joint is fixedly arranged, and on which an upper ball joint is arranged to cooperate with the lower ball joint; on the upper ball joint is an upper turntable, on which a scale is arranged on the side wall of the upper turntable, an I-beam is arranged on the suction cup supporting platform, on which an angle pointer is arranged corresponding to the scale; a plurality of supporting feet are arranged at the bottom of the upper turntable, below which a groove is arranged, and in which a slideway is arranged, and the slideway is cooperated and connected with the supporting feet.

2. The anti-over-rotation device for bridge rotation according to claim 1 is characterized in that: The lower ball joint is arranged in an arc-shaped concave configuration, and one end of the upper ball joint connected to the lower ball joint is arranged in an arc-shaped convex configuration.

3. The anti-over-rotation device for bridge rotation according to claim 1 is characterized in that: A polytetrafluoro plate is arranged at the upper end of the slideway, and the polytetrafluoro plate is arranged in close contact with the slideway.

4. The anti-over-rotation device for bridge rotation according to claim 1 is characterized in that: There are eight supporting legs, which are arranged in a ring shape at the bottom of the lower turntable.

5. The anti-over-rotation device for bridge rotation according to claim 1 is characterized in that: A pin is arranged at the center of the upper ball joint and the lower ball joint, and the pin is rotatably connected to the upper ball joint and the lower ball joint.

6. The anti-over-rotation device for bridge rotation according to claim 1, characterized in that: The scale is arranged at the lower end of the upper rotating disk.

7. The anti-over-rotation device for bridge rotation according to claim 1 is characterized in that: The lower plate support platform and the upper turntable are respectively provided with a lower limit plate and an upper limit plate, and a limit setting is provided between the upper limit plate and the lower limit plate.

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