Bridge support rotating hinge structural member

Abstract

The utility model discloses a rotating hinge structural member of a bridge support, which comprises a rotating hinge support and is characterized by further comprising a first tetrafluoroethylene slip sheet, a second tetrafluoroethylene slip sheet and a steel wedge block, and the rotating hinge support is formed by matching an upper spherical hinge with a lower spherical hinge through a pin shaft. A plurality of grooves are sequentially formed in the inner spherical surface of the upper surface of the lower spherical hinge in the radial direction of the inner spherical surface, a steel wedge block is embedded in each groove in a one-to-one correspondence mode, and a first tetrafluoroethylene sliding piece is embedded in each steel wedge block; a plurality of concrete vibrating holes are sequentially formed in the inner spherical surface of the upper face of the lower spherical hinge in the radial direction of the lower spherical hinge, and a second tetrafluoroethylene sliding piece is embedded in each concrete vibrating hole in a one-to-one correspondence mode. According to the bridge support rotating hinge structural part, the mounting groove is formed in the mounting face of the lower spherical hinge in the rotating hinge support, the mounting groove machined in the mounting face can be achieved through a common rotary machine tool, machining is convenient, the machining cost is reduced, machining of spherical hinges of any diameter can be achieved, and the machining precision is easily guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a bridge support hinge structure. Background Art

[0002] The bridge bearing is an important component of the bridge construction structure and plays an important role in ensuring the performance of the bridge. A hinge structure is usually provided in the bridge bearing to enable the bridge to achieve a certain degree of sliding and rotation. In the existing hinge structure, a friction pair is usually provided between two structural members. The friction pair adopts a tetrafluoroethylene vane structure. In this hinge structure, a groove structure for installing the tetrafluoroethylene vane needs to be provided on the mounting surface of the hinge support. Since the mounting surface of the hinge support is usually a concave spherical surface, it is difficult to machine a groove structure for installing the tetrafluoroethylene vane on the mounting surface, and the machining accuracy of the groove cannot be guaranteed, which makes it difficult to ensure the performance of the hinge structure in the bridge bearing.

[0003] The limitations of traditional processing methods are: processing small grooves on a large concave surface, and the grooves are required to be on the same center of a circle, which makes processing difficult and the quality difficult to guarantee; in addition, large workpieces cannot be processed (the maximum size in the southwest region can only be processed up to 2.8 meters), the equipment requirements are high (requiring 5-axis CNC processing equipment), and the processing cycle is long.

[0004] Therefore, a bridge bearing hinge structure is provided to solve the above-mentioned problem, which can process large-sized workpieces and realize the processing of ball joints with larger diameters. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model aims to provide a bridge bearing hinge structure.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a bridge support hinge structure, including a hinge support, a first tetrafluoroethylene sliding plate, a second tetrafluoroethylene sliding plate and a steel wedge block, wherein the hinge support is composed of an upper ball joint and a lower ball joint that cooperate with each other through a pin shaft, and a plurality of grooves are sequentially opened on the inner spherical surface above the lower ball joint along its radial direction, and a steel wedge block is respectively embedded in the plurality of grooves corresponding to each other, and the first tetrafluoroethylene sliding plate is embedded in the steel wedge block;

[0008] A plurality of concrete vibrating holes are sequentially arranged on the inner spherical surface of the lower spherical joint along its radial direction, and a second tetrafluoroethylene sliding plate is respectively embedded in each of the plurality of concrete vibrating holes in a one-to-one correspondence.

[0009] Preferably, the top surface of each of the steel wedges is on the same spherical surface as the inner spherical surface of the lower ball joint; the top surface of each of the first tetrafluoroethylene slides is higher than the inner spherical surface of the lower ball joint, and the top surface of each of the first tetrafluoroethylene slides is on the same spherical surface that matches the radius size of the outer spherical surface of the upper ball joint, so as to facilitate the mutual cooperation between the upper ball joint and the lower ball joint to form a swivel hinge support.

[0010] Preferably, the plurality of grooves are coaxially arranged along the central axis of the inner spherical surface on the lower spherical joint.

[0011] Preferably, a plurality of the concrete vibration holes are coaxially arranged along the central axis of the inner spherical surface on the lower spherical joint.

[0012] Preferably, the size of the first tetrafluoroethylene sliding sheet is Φ60×20 mm; the size of the second tetrafluoroethylene sliding sheet is Φ150×20 mm.

[0013] Preferably, a small hole is drilled at the center of the first tetrafluoroethylene sliding sheet and the center of the second tetrafluoroethylene sliding sheet to discharge air during installation.

[0014] The beneficial effects of the present invention are as follows: the bridge support hinge structure in the present invention, by arranging an installation groove on the installation surface of the lower ball joint of the hinge support, the installation groove machined on the installation surface can be realized by using an ordinary rotary CNC machine tool, the processing is convenient, and the processing cost is reduced. The processing of ball joints of any diameter (currently up to 16 meters) can be realized, and the processing accuracy is easily guaranteed; the overall structure is simple, the installation accuracy of the slide can be guaranteed, and the performance and service life of the hinge structure can be well guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of a bridge support hinge structure provided by an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Plan view of the arrangement of the PTFE sliding plate in the lower 1 / 4 ball joint;

[0018] Figure 3 for Figure 2 A partial structural elevation view of the first tetrafluoroethylene sliding plate arrangement;

[0019] Figure 4 for Figure 2 Partial structural elevation view of the second tetrafluoroethylene slide arrangement.

[0020] Description of reference numerals:

[0021] The first tetrafluoroethylene sliding plate 1, the second tetrafluoroethylene sliding plate 2, the upper ball joint 3, the lower ball joint 4, and the steel wedge block 5. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1, as Figures 1 to 4 As shown, a bridge bearing hinge structure, including a hinge bearing, a first tetrafluoroethylene sliding plate 1, a second tetrafluoroethylene sliding plate 2 and a steel wedge block 5, the hinge bearing is composed of an upper ball joint 3 and a lower ball joint 4 through a pin shaft, and a plurality of grooves are sequentially opened on the inner spherical surface above the lower ball joint 4 along its radial direction, and a steel wedge block 5 is respectively embedded in the plurality of grooves corresponding to each other, and the first tetrafluoroethylene sliding plate 1 is embedded in the steel wedge block 5;

[0024] Furthermore, Figure 1 and Figure 2 , Figure 4 As shown, a plurality of concrete vibration holes are sequentially arranged on the inner spherical surface of the lower ball joint 4 along its radial direction, and a second tetrafluoroethylene sliding plate 2 is respectively embedded in the plurality of concrete vibration holes. It should be noted that the number of concrete vibration holes needs to be adaptively set according to the diameter of different swivel hinge supports, and can be 4, 8 or 32 evenly distributed on the lower ball joint.

[0025] Further, in an embodiment, Figure 1 , Figure 3 As shown, the top surface of each of the steel wedge blocks 5 is on the same spherical surface as the inner spherical surface of the lower ball joint 4; the top surface of each of the first tetrafluoroethylene slides 1 is higher than the inner spherical surface of the lower ball joint 4, and the top surface of each of the first tetrafluoroethylene slides 1 is on the same spherical surface that matches the radius size of the outer spherical surface of the upper ball joint 3, so as to facilitate the mutual cooperation between the upper ball joint and the lower ball joint to be installed into a swivel hinge support.

[0026] Further, such as Figure 2As shown, several grooves are coaxially arranged along the central axis of the inner spherical surface on the lower ball joint 4.

[0027] Further, such as Figure 2 As shown, a plurality of concrete vibration holes are coaxially arranged along the central axis of the inner spherical surface above the lower ball joint 4.

[0028] Furthermore, the size of the first tetrafluoroethylene sliding sheet 1 is Φ60×20 mm; the size of the second tetrafluoroethylene sliding sheet 2 is Φ150×20 mm.

[0029] Furthermore, a small hole is drilled at the center of the first tetrafluoroethylene sliding sheet 1 and the center of the second tetrafluoroethylene sliding sheet 2 to discharge air when installing.

[0030] The steel ball hinge surface is manufactured and processed in the factory. First, several grooves are machined on the lower spherical surface with a lathe. According to the depth of the machined grooves, steel wedges of the same depth are embedded in the grooves. It should be noted that holes that match the diameter of the first tetrafluoroethylene slide to be embedded must be machined on the steel wedge in advance. At the same time, a proper number of concrete vibration holes are set on the lower spherical hinge surface to facilitate the construction of concrete under the spherical hinge surface. The second tetrafluoroethylene slide at the vibration hole will be installed on site after the concrete construction is completed. The precautions for installation are as follows:

[0031] (1) Apply butter and polytetrafluoroethylene powder between the polytetrafluoroethylene slides;

[0032] (2) A small hole needs to be drilled in the center of the PTFE slide to allow air to be exhausted during installation;

[0033] (3) The allowable stress of tetrafluoroethylene sliding piece shall not be less than 100MPa.

[0034] In addition, the technical standards for manufacturing and acceptance of upper and lower ball joints are as follows:

[0035] (1) The surface finish of the ball joint and the contact sphere shall not be less than ▽3;

[0036] (2) The radius of curvature at each point on the spherical surface must be equal, and the error should not exceed 2 mm;

[0037] (3) The elevation of each point on the edge of the ball joint is not greater than 1 mm;

[0038] (4) The ovality of the horizontal section shall not exceed 1.5 mm;

[0039] (5) The top surface of the Teflon slide inlaid on the inner spherical surface of the lower spherical joint must be on the same spherical surface, and the error should not exceed 1mm;

[0040] (6) The centroidal axis and rotation axis of the upper and lower ball joints must coincide with each other, and the error should not exceed 1mm;

[0041] (7) The center axis of the steel pipe welded to the upper and lower ball joints must coincide with the rotation axis, with an error of no more than 1 mm. The steel pipe must be vertical, with an inclination of no more than 1%;

[0042] (8) The height of the weld shall not be less than 8m.

[0043] (9) After the upper and lower ball joints have been manufactured and accepted by the factory, they must be transported using a separately designed fixed bracket to ensure the safety and non-deformation of the ball joints during transportation;

[0044] (10) The specific structure and materials shall be based on the manufacturer’s actual products.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A bridge bearing hinge structure, comprising a hinge bearing, characterized in that: It also includes a first tetrafluoroethylene sliding piece, a second tetrafluoroethylene sliding piece and a steel wedge block, the swivel hinge support is composed of an upper ball hinge and a lower ball hinge that cooperate with each other through a pin shaft, and a plurality of grooves are sequentially opened on the inner spherical surface above the lower ball hinge along its radial direction, and a steel wedge block is respectively embedded in the plurality of grooves corresponding to each other, and the first tetrafluoroethylene sliding piece is embedded in the steel wedge block; A plurality of concrete vibrating holes are sequentially arranged on the inner spherical surface of the lower spherical joint along its radial direction, and a second tetrafluoroethylene sliding plate is respectively embedded in each of the plurality of concrete vibrating holes in a one-to-one correspondence.

2. A bridge bearing hinge structure as claimed in claim 1, characterized in that: The top surface of each of the steel wedges is on the same spherical surface as the inner spherical surface of the lower ball joint; the top surface of each of the first tetrafluoroethylene slides is higher than the inner spherical surface of the lower ball joint, and the top surface of each of the first tetrafluoroethylene slides is on the same spherical surface that matches the radius size of the outer spherical surface of the upper ball joint.

3. A bridge bearing hinge structure as claimed in claim 1, characterized in that: The plurality of grooves are coaxially arranged along the central axis of the inner spherical surface on the lower spherical joint.

4. A bridge bearing hinge structure as claimed in claim 1, characterized in that: A plurality of concrete vibration holes are coaxially arranged along the central axis of the inner spherical surface on the lower spherical joint.

5. The bridge support hinge structure according to claim 1, characterized in that: The size of the first tetrafluoroethylene sliding sheet is Φ60mm×20mm; the size of the second tetrafluoroethylene sliding sheet is Φ150mm×20mm.

6. A bridge bearing hinge structure as claimed in claim 1, characterized in that: Small holes are drilled at the center of the first tetrafluoroethylene sliding sheet and the center of the second tetrafluoroethylene sliding sheet to discharge air when installing.

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