Cast-in-place environment-friendly spherical support
By setting separate friction pair structures and integral cast stiffener structures in the spherical bearing, the problems of bearing wear and high construction costs are solved, and flexible rotation of the bearing and environmentally friendly construction are achieved.
Patent Information
- Application Number
- CN202520000899.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing spherical bearings are prone to line contact wear when the beam flexes or slides horizontally, resulting in short service life and high construction costs. In addition, traditional bearing structures are heavy and not environmentally friendly.
The first and second friction pairs are separately configured and used for the rotation and translation of the support, respectively. Combined with the stiffening plate structure that is cast integrally with the beam, the friction force is reduced and the amount of material used is reduced.
It improves the rotational flexibility and service life of the bearing, reduces construction costs, and protects the ecological environment through lightweight design.
Smart Images
Figure CN223738471U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spherical bearing technology, specifically a cast-in-place environmentally friendly spherical bearing. Background Technology
[0002] Bridge bearings are crucial structural components connecting the superstructure and substructure of a bridge. Located between the bridge and the bearing pad, they reliably transfer the loads and deformations (displacement and rotation) borne by the superstructure to the substructure, serving as a vital force transmission device. Commonly used spherical bearings consist of an upper bearing plate, a spherical cap liner, a lower bearing plate, a stainless steel plate, a wear-resistant plate, guide stainless steel, and side guide plates. Horizontal sliding is achieved through the friction between the guide stainless steel plate on the upper bearing plate and the side guide plates on the lower bearing plate, while rotation is achieved through the intermediate spherical liner. When the bridge beam experiences horizontal deflection due to various reasons, or simultaneously various deflections and horizontal sliding, the contact surface between the guide stainless steel plate and the side guide plates on the lower bearing plate changes from surface contact to line contact, and may even become jammed. Prolonged pressure will inevitably lead to severe wear on the contact surface, affecting the bearing's service life and performance, and seriously impacting bridge safety.
[0003] In addition, the existing bearing plates are usually solid structures, which are quite heavy and increase the consumption of construction resources, indirectly leading to the problem of the equipment being environmentally unfriendly.
[0004] Therefore, it is necessary to develop a bearing that is more robust, flexible in rotation, has a longer service life, and has a lower construction cost. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a cast-in-place environmentally friendly spherical support to solve the problems of unreliable support structure, inflexible rotation process, easy line contact leading to increased wear, reduced service life and high construction cost in the prior art.
[0006] This utility model provides a cast-in-place environmentally friendly spherical support, which includes an upper support plate, a middle support plate, and a lower support plate. The lower surface of the upper support plate is a spherical crown surface, and the upper surface of the middle support plate has a spherical crown groove that mates with the spherical crown surface. A first friction pair structure for support rotation is provided between the upper support plate and the middle support plate. A second friction pair structure for support translation is provided between the middle support plate and the lower support plate. The upper support plate is composed of a spherical crown base plate and an upper stiffening plate structure. The stiffening plate structure includes multiple straight stiffening plates radially distributed in the radial direction and multiple concentric annular stiffening plates, with the straight stiffening plates and the annular stiffening plates interlaced. The upper support plate is integrally cast and fixed to the beam body.
[0007] Further, the lower support plate upper surface has a sliding groove, the middle support plate is arranged in the sliding groove, and the middle support plate can move along the direction of the sliding groove.
[0008] Further, the first friction pair structure comprises a first sliding plate and a first wear plate, wherein the first sliding plate is fixed on the spherical crown surface of the upper support plate, and the first wear plate is fixed in the spherical crown groove of the middle support plate and is in sliding contact with the first sliding plate.
[0009] Further, the second friction pair structure comprises a second sliding plate and a second wear plate, wherein the second sliding plate is fixed on the sliding groove bottom surface of the lower support plate, and the second wear plate is fixed on the lower surface of the middle support plate and is in sliding contact with the second sliding plate.
[0010] Further, the lower surface and the spherical crown groove of the upper part of the middle support plate are both provided with annular sealing grooves, the annular sealing groove in the spherical crown groove of the upper part of the middle support plate is provided with a first sealing ring, and the annular sealing groove in the lower surface of the middle support plate is provided with a second sealing ring.
[0011] In the embodiment of the utility model, the third friction pair structure is arranged between the middle support plate and the inner side wall of the sliding groove of the lower support plate, so that the friction between the middle support plate and the inner side wall of the sliding groove is reduced.
[0012] Further, the third friction pair structure comprises a third sliding plate and a third wear plate, wherein the third sliding plate is fixed on the inner side wall of the sliding groove of the lower support plate, and the third wear plate is fixed on the side wall of the bottom boss of the middle support plate.
[0013] According to the above embodiment, the cast-in-place environment-friendly spherical support provided by the utility model has at least the following advantages:
[0014] Firstly, the upper support plate of the spherical support is integrally cast with the beam body, so that the balance stability of the overall structure of the bridge support is ensured, the phenomenon of emptying of the support is effectively avoided, the overallity is good, the structural rigidity is large, the adaptability is strong, and the construction convenience and reliability are improved.
[0015] Secondly, the upper support plate is made in the mode that the spherical crown bottom plate is combined with the rib plate structure, the steel material consumption of the support is reduced, the cost is greatly reduced, the construction resources are saved, and the ecological environment is protected.
[0016] Third, the first friction pair structure is used for adapting the rotation requirement of the beam body in each direction, and the second friction pair structure is used for adapting the horizontal sliding of the beam body. The rotation function and the displacement function of the friction pairs are separated, the contact between the upper seat plate and the lower seat plate guide surface of the traditional spherical support is avoided, the rotation angle of the support is stuck when the beam body is in a deflection stress state, the function failure is avoided, the support rotation is flexible, and the service life of the support is prolonged.
[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the scope of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0018] The following drawings are part of the specification of the utility model, which illustrates the example embodiments of the utility model, and the accompanying drawings and the description of the specification are used to illustrate the principle of the utility model.
[0019] Fig. 1 The utility model provides a kind of cast-in-place environmental protection spherical support of section view.
[0020] Fig. 2 The utility model provides a kind of cast-in-place environmental protection spherical support of plan view.
[0021] Fig. 3 The utility model provides a kind of cast-in-place environmental protection spherical support of middle seat plate and lower seat plate relative sliding schematic view.
[0022] EXPLANATION OF REFERENCE NUMERALS:
[0023] 1-upper seat plate, 2-middle seat plate, 3-lower seat plate, 4-first friction pair structure, 5-second friction pair structure, 6-first sealing ring, 7-second sealing ring, 8-third friction pair structure;
[0024] 11-crown bottom plate, 12-rib structure;
[0025] 41-first sliding plate, 42-first wear plate;
[0026] 51-second sliding plate, 52-second wear plate;
[0027] 81-third sliding plate, 82-third wear plate. DETAILED DESCRIPTION
[0028] Now, various exemplary embodiments of the utility model are described in detail, which should not be considered as limitation to the utility model, and should be understood as more detailed description of certain aspects, characteristics and implementation schemes of the utility model.
[0029] Many modifications and variations to the specific embodiments of the present application can be practiced in accordance with the teachings of the present application, and as would be obvious to those skilled in the art after reading the foregoing description of the present application. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application. The examples set forth in the present application are intended to be illustrative only and not in a limiting sense.
[0030] The utility model provides a cast -in -situ environmental protection ball type support, such as Figs. 1-3 As shown in the structure schematic view of this ball type support, in the specific embodiment, the ball type support comprises: an upper support plate 1, a middle support plate 2 and a lower support plate 3. Wherein, the lower surface of the upper support plate 1 is a spherical crown surface, the upper surface of the middle support plate 2 has a spherical crown groove matched with the spherical crown surface, and a first friction pair structure 4 for support corner rotation is arranged between the upper support plate 1 and the middle support plate 2, which reduces the friction of support rotation and makes the rotation more flexible. When the beam body is flexurally deformed, the first friction pair structure 4 can adapt to the rotation demand of the beam body in each direction.
[0031] A second friction pair structure 5 for support translation is arranged between the middle support plate 2 and the lower support plate 3 to adapt to the horizontal sliding of the beam body.
[0032] In the technical scheme of the utility model, the friction pairs of rotation function and displacement function are separately arranged, which avoids the contact between the upper support plate and the lower support plate guide surface of the traditional ball type support, causes the support corner to be stuck when the beam body is flexurally stressed, and the function failure problem, so that the support rotation is flexible, and the service life of the support is prolonged.
[0033] In the specific embodiment of the utility model, the upper support plate 1 is composed of a spherical crown bottom plate 11 and a rib plate structure 12 at the upper part. Wherein, the rib plate structure 12 comprises a plurality of straight rib plates distributed radially in a radial direction and a plurality of annular rib plates arranged concentrically, and the straight rib plates and the annular rib plates are connected alternately.
[0034] The upper support plate 1 is integrally poured and fixed with the beam body, which can ensure the balance and stability of the overall structure of the beam body and the support, has good integrity, large structural rigidity, strong adaptability, improves the construction convenience and reliability. And can effectively avoid the emptying phenomenon of the support, save materials, and the support rotates flexibly, which is convenient to install.
[0035] In the specific embodiment of the utility model, the upper surface of the lower support plate 3 has a sliding groove, the middle support plate 2 is arranged in the sliding groove, and the middle support plate 2 can move along the direction of the sliding groove. That is, as shown in Fig. 3 When the beam body is deformed due to temperature, concrete shrinkage and creep, prestress and other factors, the middle support plate 2 can displace in the front and back directions along the sliding groove of the lower support plate 3.
[0036] In the specific embodiment of the utility model, the first friction pair structure 4 comprises: a first sliding plate 41 and a first wear plate 42. Among them, the first sliding plate 41 is fixed on the spherical crown surface of the upper support plate 1, and the first wear plate 42 is fixed in the spherical crown groove of the middle support plate 2 and is in sliding contact with the first sliding plate 41. In this embodiment, the arc surface length of the first sliding plate 41 is greater than the arc surface length of the first wear plate 42, so that the first sliding plate 41 and the first wear plate 42 are always in sliding contact when the angle is turned.
[0037] When the beam body is deformed, the first sliding plate 41 and the first wear plate 42 will slide and rub, and then the angle of the support is rotated, which meets the rotating demand of the beam body in all directions.
[0038] The second friction pair structure 5 comprises: a second sliding plate 51 and a second wear plate 52. Among them, the second sliding plate 51 is fixed on the sliding groove bottom surface of the lower support plate 3, and the second wear plate 52 is fixed on the lower surface of the middle support plate 2 and is in corresponding sliding contact with the second sliding plate 51. As shown in the figure, when the beam body is deformed due to temperature, concrete shrinkage and creep, prestress and other factors, the beam body will drive the upper support plate 1 and the middle support plate 2 to slide horizontally relative to the lower support plate 3 to adapt to the free expansion of the beam body without constraint, so as to avoid the deformation of the beam body due to temperature, concrete shrinkage and creep, prestress and other factors. The direction indicated by the arrow in the figure is the displacement direction of the middle support plate 2 relative to the lower support plate 3. Fig. 3
[0039] Preferably, the first sliding plate 41 and the second sliding plate 51 are both stainless steel plates.
[0040] In the specific embodiment of the utility model, the lower surface and the upper spherical crown groove of the middle support plate 2 are both provided with annular sealing grooves, the annular sealing groove in the upper spherical crown groove of the middle support plate 2 is provided with a first sealing ring 6, and the annular sealing groove in the lower surface of the middle support plate 2 is provided with a second sealing ring 7.
[0041] The sealing ring is used for sealing the friction pair structure, avoiding the entry of external dust and other sundries into the sliding pair, and then affecting the sliding effect. At the same time, the loss of the lubricant added in the friction pair can be reduced as much as possible, the length of the lubrication effect of the support is improved, so that the maintenance frequency of the support can be reduced, and the maintenance cost is reduced.
[0042] In the specific embodiment of the utility model, the middle support plate 2 and the inner side wall of the sliding groove of the lower support plate 3 have a third friction pair structure 8, which is used for reducing the friction force between the middle support plate 3 and the inner side wall of the sliding groove.
[0043] The third friction pair structure 8 comprises a third sliding plate 81 and a third wear plate 82.
[0044] Preferably, the third sliding plate 81 is a stainless steel plate.
[0045] The above merely illustrates the specific implementation of the present application, and any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present application shall fall within the scope of protection of the present application.
Claims
1. A cast-in-place environmentally friendly spherical support, characterized by, The spherical support comprises: an upper support plate (1), a middle support plate (2) and a lower support plate (3), wherein, the lower surface of the upper support plate (1) is a spherical cap surface, the upper surface of the middle support plate (2) has a spherical cap groove matched with the spherical cap surface, and a first friction pair structure (4) for support rotation is arranged between the upper support plate (1) and the middle support plate (2); a second friction pair structure (5) for support translation is arranged between the middle support plate (2) and the lower support plate (3); the upper support plate (1) is composed of a spherical cap bottom plate (11) and an upper rib plate structure (12), wherein, the rib plate structure (12) comprises a plurality of straight rib plates distributed radially and a plurality of annular rib plates arranged concentrically, and the straight rib plates and the annular rib plates are connected alternately; the upper support plate (1) is integrally casted and fixed with the beam body.
2. A cast-in-place environmentally friendly spherical support according to claim 1, characterized in that, the upper surface of the lower support plate (3) has a sliding groove, the middle support plate (2) is arranged in the sliding groove, and the middle support plate (2) can move along the direction of the sliding groove.
3. A cast-in-place environmentally friendly spherical support according to claim 2, characterized in that, The first friction pair structure (4) comprises: a first sliding plate (41) and a first wear-resistant plate (42), wherein, the first sliding plate (41) is fixed on the spherical cap surface of the upper support plate (1), and the first wear-resistant plate (42) is fixed in the spherical cap groove of the middle support plate (2) and slides in contact with the first sliding plate (41).
4. A cast-in-place environmentally friendly spherical support according to claim 3, characterized in that, The second friction pair structure (5) comprises: a second sliding plate (51) and a second wear-resistant plate (52), wherein, the second sliding plate (51) is fixed on the bottom surface of the sliding groove of the lower support plate (3), and the second wear-resistant plate (52) is fixed on the lower surface of the middle support plate (2) and slides opposite to the second sliding plate (51).
5. A cast-in-place environmentally friendly spherical support according to claim 4, characterized in that, The lower surface of the middle support plate (2) and the spherical cap groove in the upper part are both provided with annular sealing grooves, the annular sealing groove in the spherical cap groove in the upper part of the middle support plate (2) is provided with a first sealing ring (6), and the annular sealing groove in the lower surface of the middle support plate (2) is provided with a second sealing ring (7).
6. A cast-in-place environmentally friendly spherical support according to claim 1, characterized in that, The middle support plate (2) and the inner side wall of the sliding groove of the lower support plate (3) have a third friction pair structure (8) for reducing the friction between the middle support plate (2) and the inner side wall of the sliding groove.
7. A cast-in-place environmentally friendly spherical support according to claim 6, characterized in that, The third friction pair structure (8) comprises a third sliding plate (81) and a third wear-resistant plate (82), wherein, the third sliding plate (81) is fixed on the inner side wall of the sliding groove of the lower support plate (3), and the third wear-resistant plate (82) is fixed on the side wall of the bottom boss of the middle support plate (2).