Spherical support suitable for small-curvature bridge displacement

Abstract

The utility model relates to a spherical support suitable for small-curvature bridge displacement. An existing bridge support is single in curve direction and poor in fault tolerance, and a bridge and the support are unbalanced in stress. The self-lubricating bearing comprises an upper bearing plate, a plane wear-resisting plate, a spherical crown lining plate, a spherical wear-resisting plate, a lower bearing plate, an upper anchorage steel bar, an upper anchorage plate, a piston plate, a self-lubricating plate and a lower anchorage steel bar, the upper anchorage steel bar, the upper anchorage plate, the upper support plate, the plane wear-resisting plate, the spherical crown lining plate, the spherical wear-resisting plate, the piston plate, the self-lubricating plate, the lower support plate and the lower anchorage steel bar are sequentially overlapped and combined from top to bottom; the piston plate is of a square-outside and round-inside structure, and the lower portion of the piston plate and the upper portion of the lower support plate form a matching structure capable of rotating by 360 degrees and transmitting horizontal force. The support can rotate by 360 degrees, can transmit horizontal force, and is diversified in curve direction, good in fault tolerance and balanced in stress of a bridge and the support.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field, concretely relates to a kind of displacement spherical support of small curvature bridge. BACKGROUND

[0002] Nowadays, there are more and more curved bridges with various curved beams, especially railway curved bridges with a curve radius less than 600 meters. As the span increases, the curved beam will rotate significantly in the plane, which will drive the upper support plate to rotate. If the conventional spherical support is used, the lateral guide surface of the upper support plate stopper of the longitudinal movable support is a plane sliding surface. The support displacement can only move along the tangent direction of the curve, i.e., linear motion, which cannot adapt to the rotation of the beam part. Therefore, it will cause the sharp corner local contact phenomenon between the lateral guide block and the upper support plate stopper end during movement, which will bring stress concentration to the component and affect the service life of the support.

[0003] For heavy-load railways, highway bridges with heavy beam weight or large span, and curved bridges with difficult top beam replacement support operation, higher requirements are put forward for the durability of bridge supports. Therefore, designing a horizontal stopper sliding surface that is a curved surface or a horizontal stopper that can move along the tangent direction of the curve at any time can solve the problem of inconsistent movement direction between the support and the bridge during bridge temperature displacement.

[0004] Currently, there is little research on small curvature radius bridge supports. Patent CN 113389136 A discloses a "one-way sliding and plane-rotating bridge support device". Its structure is to set a curved surface and a matching plane sliding surface on the horizontal stopper of the conventional spherical steel support, which can adapt to the curved motion of the bridge. However, the curved surface radius needs to be designed in combination with the bridge curve radius, which has poor adaptability. There is also stress concentration at the curved surface and plane matching position. Moreover, its curve is a single-direction curve, which is not easy to find inside the support. If the installation direction of the support is wrong, it cannot adapt to the curved motion of the bridge, but will resist the motion and increase the stress on the bridge, which has poor fault tolerance.

[0005] Therefore, there is an urgent need for a spherical support with various curve directions, good fault tolerance, and balanced stress on the bridge and support. SUMMARY

[0006] The utility model aims to provide a small curvature bridge displacement spherical support to at least solve the problems of single curve direction, poor fault tolerance, and unbalanced stress on the bridge and support of the existing bridge support.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The application discloses a small-curvature bridge displacement ball-type support, which comprises an upper support plate, a plane wear-resistant plate, a spherical cap lining plate, a spherical surface wear-resistant plate and a lower support plate, and further comprises an upper anchorage steel rod, an upper anchorage plate, a piston plate, a self-lubricating plate and a lower anchorage steel rod, wherein the upper anchorage steel rod, the upper anchorage plate, the upper support plate, the plane wear-resistant plate, the spherical cap lining plate, the spherical surface wear-resistant plate, the piston plate, the self-lubricating plate, the lower support plate and the lower anchorage steel rod are sequentially and downwardly overlapped and combined.

[0009] The piston plate is of an outer square and inner circle structure, and the lower part of the piston plate and the upper part of the lower support plate form a matching structure capable of 360-degree rotation and capable of transmitting horizontal force.

[0010] Further, the upper part of the piston plate is in a concave spherical surface shape.

[0011] Further, the matching structure comprises a first cylindrical surface of the lower part of the piston plate and a second cylindrical surface of the upper part of the lower support plate, and the first cylindrical surface and the second cylindrical surface are respectively attached to the upper and lower sides of the self-lubricating plate.

[0012] Further, the matching structure comprises a third cylindrical surface of the lower part of the piston plate and a fourth cylindrical surface of the upper part of the lower support plate, and the third cylindrical surface and the fourth cylindrical surface are respectively attached to the upper and lower sides of the self-lubricating plate.

[0013] Further, the piston plate is of an outer square and inner circle structure, and the lower part of the piston plate and the upper part of the lower support plate form a matching structure capable of 360-degree rotation and capable of transmitting horizontal force.

[0014] Further, the self-lubricating plate is of a cylindrical structure or a plane structure and is arranged between the contact surfaces of the piston plate and the lower support plate.

[0015] Further, a plurality of lubricating holes embedded with graphite are arranged on the upper end surface of the self-lubricating plate.

[0016] Further, the lubricating holes are circularly distributed on the upper end surface of the self-lubricating plate.

[0017] Further, the lower support plate and the lower anchorage steel rod are connected through a lower anchorage bolt.

[0018] Further, the upper support plate and the upper anchorage steel rod are connected through an upper anchorage bolt.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. The utility model provides a kind of displacement spherical support of small curvature bridge adaptation, by embedding piston plate in lower support plate, the lower part of piston plate and the upper part of lower support plate form cylindrical cooperation structure, so that piston plate can rotate 360 degrees relative to lower support plate and can transmit horizontal force, so that curve direction is various, and the support fault tolerance is good.

[0021] 2, the utility model discloses by setting piston plate as outer square inner circle structure, ensure that piston plate side surface and upper support plate baffle always be plane contact, stress stable and reliable, stress concentration does not appear, always keep sliding surface in the tangent direction of curve by rotating in the process of support sliding.

[0022] 3, the self-lubricating plate of the utility model is brass inlay graphite combination plate, with self-lubricating function, can long maintain lower friction coefficient, ensure the long-term reliability of piston plate rotation. DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain the drawings of other embodiments according to these drawings without creating creative labor.

[0024] Figure 1 It is the elevation structure schematic diagram of example 1;

[0025] Figure 2 It is the piston plate cross section schematic diagram of example 1;

[0026] Figure 3 It is the piston plate plane schematic diagram of example 1;

[0027] Figure 4 It is the lower support plate cross section schematic diagram of example 1;

[0028] Figure 5 It is the lower support plate plane schematic diagram of example 1;

[0029] Figure 6 It is the self-lubricating plate cross section schematic diagram of example 1;

[0030] Figure 7 It is the self-lubricating plate plane schematic diagram of example 1;

[0031] Figure 8 It is the three-dimensional schematic diagram of piston plate of example 1;

[0032] Figure 9 It is the three-dimensional schematic diagram of the combination of piston plate and lower support plate of example 1;

[0033] Identified in the figure as:

[0034] 1 - upper anchorage steel rod, 2 - upper anchorage plate, 3 - upper support plate, 4 - flat wear plate, 5 - spherical crown lining plate, 6 - spherical wear plate, 7 - piston plate, 8 - self-lubricating plate, 9 - lower support plate, 10 - lower anchorage steel rod, 11 - lower anchorage bolt, 12 - upper anchorage bolt, 13 - first cylindrical surface, 14 - second cylindrical surface, 15 - lubrication hole. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0036] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, set, or can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] At the same time, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Of course, such objects can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0039] The utility model provides a kind of small curvature bridge displacement spherical support, including upper support plate 3, plane wear plate 4, spherical crown lining plate 5, spherical wear plate 6 and lower support plate 9, further including upper anchorage steel bar 1, upper anchorage plate 2, piston plate 7, self-lubricating plate 8 and lower anchorage steel bar 10, upper anchorage steel bar 1, upper anchorage plate 2, upper support plate 3, plane wear plate 4, spherical crown lining plate 5, spherical wear plate 6, piston plate 7, self-lubricating plate 8, lower support plate 9 and lower anchorage steel bar 10 are sequentially overlapped combination from top to bottom.

[0040] Piston plate 7 is outside the inner circle structure, to facilitate ensure that piston plate 7 side and upper support plate 3 block are always plane contact, stable and reliable stress, will not appear stress concentration, piston plate 7 lower part and lower support plate 9 upper part form the cooperation structure that can 360 degrees rotate and can transmit horizontal force, to improve the fault tolerance of support.

[0041] Piston plate 7 upper part is concave spherical.

[0042] Cooperation structure includes the first cylindrical surface 13 of piston plate 7 lower part concave and the second cylindrical surface 14 of lower support plate 9 upper part convex, and the first cylindrical surface 13 and the second cylindrical surface 14 are respectively adhered to the upper and lower sides of self-lubricating plate 8.

[0043] Cooperation structure includes the third cylindrical surface of piston plate 7 lower part convex and the fourth cylindrical surface of lower support plate 9 upper part concave, and the third cylindrical surface and the fourth cylindrical surface are respectively adhered to the upper and lower sides of self-lubricating plate 8.

[0044] Piston plate 7 outer side and upper support plate 3 lateral block are plane contact.

[0045] Self-lubricating plate 8 is barrel structure or plane structure, is arranged between the contact surface of piston plate 7 and lower support plate 9, to facilitate the rotation of piston plate 7 relative to lower support plate 9.

[0046] Several lubrication holes 15 embedded with graphite are penetrated and set on self-lubricating plate 8, to facilitate maintaining lower friction coefficient, ensure the long-term reliability of the rotation of piston plate 7.

[0047] Lubrication hole 15 is circular distribution on the upper end surface of self-lubricating plate 8, to facilitate uniform friction during rotation.

[0048] Lower support plate 9 and lower anchorage steel bar 10 are connected by lower anchorage bolt 11.

[0049] Upper support plate 3 and upper anchorage steel bar 1 are connected by upper anchorage bolt 12.

[0050] Embodiment 1:

[0051] As Figure 1As shown, the embodiment provides a small curvature bridge displacement spherical support, which comprises an upper anchorage steel rod 1, an upper anchorage plate 2, an upper support plate 3, a flat wear-resistant plate 4, a spherical crown lining plate 5, a spherical wear-resistant plate 6, a piston plate 7, a self-lubricating plate 8, a lower support plate 9 and a lower anchorage steel rod 10. The upper anchorage steel rod 1, the upper anchorage plate 2, the upper support plate 3, the flat wear-resistant plate 4, the spherical crown lining plate 5, the spherical wear-resistant plate 6, the piston plate 7, the self-lubricating plate 8, the lower support plate 9 and the lower anchorage steel rod 10 are sequentially and downwardly overlapped and combined.

[0052] Further, as shown in Figure 2 , Figure 3 and Figure 8 , the piston plate 7 has an outer square and inner circle structure, which facilitates ensuring that the upper outer side of the piston plate 7 is always in plane contact with the lower inner side of the lateral stop block of the upper support plate 3, and the stress is stable and reliable, and stress concentration does not occur, and the sliding surface is always kept in the tangent direction of the curve through rotation in the sliding process of the support.

[0053] In the embodiment, the upper part of the piston plate 7 is in a concave spherical shape, and the lower part is in a concave cylindrical shape, as shown in Figure 4 and Figure 5 , the upper part of the lower support plate 9 is in a convex cylindrical shape, and the lower part of the piston plate 7 and the upper part of the lower support plate 9 form a matching structure capable of 360-degree rotation and capable of transmitting horizontal force, so that the support has good fault tolerance.

[0054] Further, the matching structure comprises a first cylindrical surface 13 of the lower part of the piston plate 7 and a second cylindrical surface 14 of the upper part of the lower support plate 9, and the first cylindrical surface 13 and the second cylindrical surface 14 are respectively attached to the upper and lower sides of the self-lubricating plate 8, as shown in Figure 9 , the piston plate 7 is nested on the cylinder of the upper part of the lower support plate 9, which can realize 360-degree rotation of the piston plate 7, and can also transmit horizontal force.

[0055] The self-lubricating plate 8 is in a barrel structure or a plane structure, as shown in Figure 6 , in the embodiment, preferably, the self-lubricating plate 8 is in a barrel structure, and the self-lubricating plate 8 is tightly arranged between the contact surface of the piston plate 7 and the lower support plate 9 as a rotating surface, so that the piston plate 7 rotates relative to the lower support plate 9.

[0056] The self-lubricating plate 8 is a brass inlaid graphite composite plate, which has a self-lubricating function and can maintain a low friction coefficient for a long time, ensuring the long-term reliability of the rotation of the piston plate 7.

[0057] The upper end surface and the side surface of the self-lubricating plate 8 are both provided with a plurality of graphite-embedded lubricating holes 15, as shown in Figure 7 , the lubricating holes 15 are respectively arranged at the center of the upper end surface and around the center on the upper end surface of the self-lubricating plate 8, and the lubricating holes 15 around the center are circularly and uniformly distributed with the center as the center.

[0058] Further, the lower support plate 9 and the lower anchorage steel rod 10 are fixedly connected by four lower anchorage bolts 11, and the upper support plate 3 and the upper anchorage steel rod 1 are fixedly connected by four upper anchorage bolts 12, and the lower anchorage bolts 11 and the upper anchorage bolts 12 are respectively distributed at the four corners of the lower support plate 9 and the upper support plate 3.

[0059] Embodiment 2:

[0060] In this embodiment, the upper part of the piston plate 7 is in a concave spherical shape, the lower part is in a convex cylindrical shape, the upper part of the lower support plate 9 is in a concave cylindrical shape, and the lower part of the piston plate 7 and the upper part of the lower support plate 9 form a matching structure capable of rotating 360 degrees and transmitting horizontal force.

[0061] The matching structure includes a third cylindrical surface of the lower part of the piston plate 7 and a fourth cylindrical surface of the upper part of the lower support plate 9, and the third cylindrical surface and the fourth cylindrical surface are respectively attached to the upper and lower sides of the self-lubricating plate 8.

[0062] The remaining structure and working principle are consistent with those of Embodiment 1.

[0063] The above uses specific examples to describe the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A spherical bearing for bridges with small curvature and displacement, comprising an upper bearing plate (3), a flat wear plate (4), a spherical crown lining plate (5), a spherical wear plate (6) and a lower bearing plate (9), characterized in that: It also comprises an upper anchorage steel bar (1), an upper anchorage plate (2), a piston plate (7), a self-lubricating plate (8) and a lower anchorage steel bar (10), which are sequentially and downwardly overlapped and combined. The piston plate (7) is of an outer square and inner circular structure, and the lower part of the piston plate (7) and the upper part of the lower support plate (9) form a matching structure capable of 360-degree rotation and horizontal force transmission.

2. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The upper part of the piston plate (7) is in a concave spherical shape.

3. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The matching structure comprises a first cylindrical surface (13) concave in the lower part of the piston plate (7) and a second cylindrical surface (14) convex in the upper part of the lower support plate (9), which are respectively attached to the upper and lower sides of the self-lubricating plate (8).

4. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The matching structure comprises a third cylindrical surface convex in the lower part of the piston plate (7) and a fourth cylindrical surface concave in the upper part of the lower support plate (9), which are respectively attached to the upper and lower sides of the self-lubricating plate (8).

5. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The piston plate (7) is in plane contact with the lateral stopper of the upper support plate (3).

6. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The self-lubricating plate (8) is in a cylindrical or planar structure and is arranged between the contact surfaces of the piston plate (7) and the lower support plate (9).

7. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The self-lubricating plate (8) is provided with a plurality of lubricating holes (15) embedded with graphite.

8. The displacement spherical support for small-curvature bridge according to claim 7, characterized in that: The lubricating holes (15) are circularly distributed on the upper end surface of the self-lubricating plate (8).

9. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The lower support plate (9) and the lower anchorage steel bar (10) are connected by a lower anchorage bolt (11).

10. The displacement spherical support for small-curvature bridge according to claim 1, characterized in that: The upper support plate (3) and the upper anchorage steel bar (1) are connected by an upper anchorage bolt (12).

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