CN212358035U - Controllable anti-overturning swivel spherical hinge - Google Patents
Controllable anti-overturning swivel spherical hinge Download PDFInfo
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- CN212358035U CN212358035U CN202021557658.XU CN202021557658U CN212358035U CN 212358035 U CN212358035 U CN 212358035U CN 202021557658 U CN202021557658 U CN 202021557658U CN 212358035 U CN212358035 U CN 212358035U
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Abstract
The utility model discloses a controllable formula prevents overturning ball pivot of turning, including ball pivot support, lower ball pivot, spacing round pin axle and last ball pivot. The lower spherical hinge is fixed on the spherical hinge support, the upper spherical hinge is coaxially and longitudinally stacked above the lower spherical hinge, the upper spherical hinge and the lower spherical hinge are assembled in a spherical rotating mode, the limiting pin shaft is fixed at the center of the lower spherical hinge, the upper spherical hinge is provided with a limiting hole for the limiting pin shaft to insert, the limiting pin shaft is of a steel pipe concrete structure, the upper spherical hinge is of an annular convex spherical structure, and the lower spherical hinge is of an annular concave spherical structure matched with the upper spherical hinge. Compared with the prior art, the upper spherical hinge and the lower spherical hinge of the utility model are integrally arranged in a hollow circular ring shape, so that the cross section can be narrower under the condition of the same bearing capacity, and the compactness of concrete pouring at the bottom of the upper spherical hinge and the lower spherical hinge can be ensured; the whole plane structure of the controllable anti-overturning swivel spherical hinge is annular, so that the back filling and sealing of the center part after the swivel operation is finished are facilitated, and the safe use of the later-stage bridge is ensured.
Description
Technical Field
The utility model relates to a bridge construction technical field especially relates to a controllable formula prevents toppling ball pivot of turning.
Background
The swivel bridge is a bridge constructed by a swivel method, and particularly relates to a bridge which divides a bridge part spanning rivers, roads and railways into two parts, constructs the bridge at two banks or two sides of the roads respectively, completes the construction of the upper structure of the bridge at a construction site, rotates beam bodies on the two banks or two sides of the roads to a working site of the bridge, and folds the two parts into an integral bridge at the working site. The bridge turning technology can convert the operation over the obstacle into onshore or near-ground operation, thereby not only ensuring the safety of engineering construction, but also reducing the influence on traffic, shortening the closing time and lowering the construction cost. With the rapid development of traffic construction projects in recent years, more and more newly-built bridge projects and existing roads, railway lines and rivers have crossed line crossing conditions, and in view of the high safety and small influence on traffic of the swivel method construction, most of newly-built line crossing bridges are constructed by the swivel method at present.
The conventional bridge swivel device mainly comprises a slideway, a supporting leg, a central spherical hinge or a swivel support. The existing swivel bridge engineering is that a bridge is driven to be transferred from a construction site to a working site through rotation of a central spherical hinge or a swivel support, and concrete backfill sealing is carried out on a bearing platform gap after swivel operation is finished. The spherical hinge or the swivel support is positioned at the rotation center of the swivel structure bearing platform and bears main structural load, and a rotating shaft arranged at the center of the support plays a role in limiting overlarge vertical rotation angle and certain overturn resistance. Since the turning method construction technology appears late, the relevant standard specification of the turning method construction technology is still not perfect, for example, the standard of the department of transportation (technical specification of highway and bridge construction) (JTG/T F50-2011) only requires the main technical indexes of the turning method construction. However, in addition to the standard specification requirements, there are still some common drawbacks to the installation and use of swivel devices: when the spherical hinge is adopted, the spherical surface of the lower spherical hinge is required to be used as a template when the concrete of the lower bearing platform is poured, and the condition of incomplete air-holding pouring is easily caused in the pouring process; when the rotating support is adopted, the plane diameter of the large-tonnage support is larger, and the complete compactness is difficult to ensure when a bottom leveling layer is poured; by adopting the spherical hinge or the swivel support, after the swivel operation is finished, concrete can only be backfilled to the area outside the spherical hinge or the swivel support, and the core part cannot be poured in. The spherical hinge or the swivel support is provided with a rotating shaft at the center of the structure for resisting unbalanced moment of the swivel structure, however, the rotating shaft cannot play a practical role when the structure overturning moment is large due to the fact that the acting force arm of the rotating shaft is small. These all leave certain safety hazards to the turning and working of bridges.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a controllable formula prevents toppling ball pivot of turning for solve that the device of turning appears pour not really, backfill the sealing thoroughly and the antidumping ability weak grade technical problem.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a controllable formula prevents overturning ball pivot of turning, including ball pivot support, lower ball pivot, spacing round pin axle and last ball pivot, lower ball pivot is fixed in on the ball pivot support, it vertically superposes in to go up the coaxial ball pivot top down, go up the ball pivot with down the ball pivot is the sphere and rotates the assembly, spacing round pin axle is fixed in down the central point of ball pivot puts, upward be equipped with the confession on the ball pivot spacing round pin axle male spacing hole, spacing round pin axle is steel core concrete structure, upward the ball pivot is the protruding spherical surface structure of circle ring shape, down the ball pivot be with go up the concave spherical surface structure of circle ring shape of ball pivot adaptation.
Preferably, the spherical hinge assembly further comprises an annular sliding plate, the annular sliding plate is located between the lower spherical hinge and the upper spherical hinge and embedded into the lower spherical hinge, a sliding plate groove for installing the annular sliding plate is formed in the lower spherical hinge, and the upper spherical hinge and the lower spherical hinge are rotatably assembled through the annular sliding plate.
Preferably, the sliding plate sealing device further comprises a sealing ring, the sealing ring is located between the lower spherical hinge and the upper spherical hinge and embedded into the lower spherical hinge, a sealing ring groove used for installing the sealing ring is formed in the lower spherical hinge, and the sealing ring groove is annularly sleeved on the inner side and/or the outer side of the sliding plate groove.
Preferably, the anti-overturning swivel joint further comprises a top plate, wherein the top plate is installed on the upper spherical hinge, and a grouting hole leading to the center of the controllable anti-overturning swivel spherical hinge is reserved in the top plate and used for backfilling and sealing the center part after the swivel is completed.
Preferably, the spherical hinge support is fixedly connected with the lower spherical hinge through bolts and nuts, a lower connecting frame is arranged on the spherical hinge support, an upper connecting frame is arranged on the lower spherical hinge, the screw end of each bolt sequentially penetrates through the lower connecting frame and the upper connecting frame upwards, each bolt is in threaded connection with three nuts, one nut is locked on the upper side of the lower connecting frame, and the other two nuts are respectively locked on the upper side and the lower side of the upper connecting frame.
The utility model discloses for prior art gain following technological effect:
the upper spherical hinge and the lower spherical hinge of the utility model are integrally arranged in a hollow circular ring shape, so that the cross section can be narrower under the condition of the same bearing capacity, and the compactness of the concrete pouring at the bottom can be ensured; the whole plane structure of the controllable overturn-preventing swivel spherical hinge is annular, so that the backfill and the sealing of the central part through the reserved grouting hole on the top plate after the swivel operation is finished are facilitated, and the safe use of the bridge at the later stage is ensured; through setting up the sealing washer, effectively avoided external debris to get into the spherical revolute pair, guaranteed the flexible operation and the stable work of spherical revolute pair.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a controllable anti-overturning swivel ball hinge according to the present embodiment;
FIG. 2 is a top view of the controllable anti-overturning swivel ball hinge of the present embodiment with the top plate removed;
FIG. 3 is a bottom view of the top plate;
description of reference numerals: 1. spherical hinge mounting; 2. a lower spherical hinge; 3. a limiting pin shaft; 4. an annular slide plate; 5. a seal ring; 6. a spherical hinge support; 7. a top plate; 8. a grouting pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a controllable formula prevents toppling ball pivot of turning for solve that the device of turning appears pour not really, backfill the sealing thoroughly and the antidumping ability weak grade technical problem.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-3, the present embodiment provides a controllable anti-overturning swivel spherical hinge, which includes a spherical hinge support 6, a lower spherical hinge 2, a limit pin 3, and an upper spherical hinge 1.
The lower spherical hinge 2 is fixed on the spherical hinge support 6, the upper spherical hinge 1 is coaxially and longitudinally overlapped above the lower spherical hinge 2, the upper spherical hinge 1 and the lower spherical hinge 2 are assembled in a spherical rotating mode, the limiting pin shaft 3 is fixed at the center of the lower spherical hinge 2, a limiting hole for inserting the limiting pin shaft 3 is formed in the upper spherical hinge 1, the limiting pin shaft 3 is of a steel pipe concrete structure, the upper spherical hinge 1 is of a circular convex spherical structure, and the lower spherical hinge 2 is of a circular concave spherical structure matched with the upper spherical hinge. In this embodiment, the limiting pin 3 is of a steel pipe concrete structure.
When the device is used, the upper spherical hinge 1 and the lower spherical hinge 2 are assembled in a spherical rotating manner, so that a larger overturning moment can be borne; because the position of the limiting pin shaft 3 is limited by the limiting hole, the vertical rotating angle of the upper spherical hinge 1 is within a set value range.
In order to reduce the rotational friction between the upper spherical hinge 1 and the lower spherical hinge 2, the present embodiment further comprises an annular slide 4. The annular sliding plate 4 is located between the lower spherical hinge 2 and the upper spherical hinge 1 and embedded into the lower spherical hinge 2, a sliding plate groove for mounting the annular sliding plate 4 is formed in the lower spherical hinge 2, and the upper spherical hinge 1 and the lower spherical hinge 2 are rotatably assembled through the annular sliding plate 4. The specific structure of the annular slide 4 is well known in the art and will not be described in detail herein.
In order to avoid that external sundries such as rainwater or sand and dust enter the spherical revolute pair to influence the rotation matching effect, the sealing ring 5 is further included in the embodiment. The sealing ring 5 is positioned between the lower spherical hinge 2 and the upper spherical hinge 1 and embedded into the lower spherical hinge 2, a sealing ring groove for installing the sealing ring 5 is arranged on the lower spherical hinge 2, the sealing ring groove is annularly sleeved on the inner side and the outer side of the sliding plate groove, and a person skilled in the art can also sleeve the sealing ring groove on one side of the sliding plate groove.
In order to ensure better stable support and centripetal self-resetting effect in a bearing state, the upper spherical hinge 1 is of a circular convex spherical structure, and the lower spherical hinge 2 is of a circular concave spherical structure matched with the upper spherical hinge 1.
In order to ensure the installation accuracy of the controllable anti-overturning swivel ball joint, the installation height of the lower ball joint 2 is adjusted by a bolt and nut assembly in the embodiment. Specifically, the spherical hinge support 6 is fixedly connected with the lower spherical hinge 2 through a bolt and a nut, the spherical hinge support 6 is provided with a lower connecting frame, and the lower spherical hinge 2 is provided with an upper connecting frame. The screw rod end of the bolt sequentially penetrates through the lower connecting frame and the upper connecting frame upwards, each bolt is in threaded connection with three nuts, one nut is locked on the upper side of the lower connecting frame, and the other two nuts are respectively locked on the upper side and the lower side of the upper connecting frame. The mounting height of the lower spherical hinge 2 can be changed by adjusting the axial mounting position of the nut on the bolt.
In order to facilitate subsequent construction, the device further comprises a top plate 7, the top plate 7 is installed on the upper spherical hinge 1, and a grouting hole 8 leading to the center of the controllable anti-overturning swivel spherical hinge is reserved in the top plate 7 and used for backfilling and sealing the center part after the swivel is completed.
The construction process of the controllable anti-overturning swivel ball hinge of the embodiment is as follows: firstly, a spherical hinge support 6 is installed, the height and the position of the spherical hinge support 6 are adjusted to meet requirements and then fixed, then the lower spherical hinge 2 is hoisted to be in place and accurately adjusted through a bolt and a nut assembly, the concrete at the center of the lower bearing platform and the concrete at the center of the limiting pin shaft 3 are poured to form the limiting pin shaft 3 of the steel pipe concrete structure, then the annular sliding plate 4, the sealing ring 5, the upper spherical hinge 1 and the top plate 7 are sequentially installed, the installation of the swivel support is completed, and the template is built to pour the upper structure. The mud jacking pipeline leading to the center of the controllable anti-overturning swivel spherical hinge needs to be reserved when the superstructure is poured, the mud jacking pipeline is connected with the prefabricated hole in the top plate 7, and bridge swivel operation is carried out after superstructure construction is completed. After the rotation operation is finished, the backfill concrete is pressed into the central area of the controllable anti-overturning rotating spherical hinge and the bearing platform gap outside the controllable anti-overturning rotating spherical hinge through the reserved mud jacking pipeline, so that the pouring is ensured to be compact, the stable support is formed, and the service safety of the bridge is ensured.
Considering the controllable anti-overturning swivel ball hinge with the same bearing capacity and the same upper swivel structure, the supporting position is adjusted to be an annular support from the central fulcrum, and the supporting stability of the latter is improved compared with the former and is more effective for controlling the settlement value of the bearing platform on the swivel structure. In order to simply verify the influence of the annular supporting structure on the settlement value of the bearing platform, models with the tonnage of 350MN and 165MN are selected for simulation analysis, and the method mainly comprises the following steps: SolidWorks modeling → selecting material configuration → adding constraints and vertical forces to the model → meshing → finite element analysis to derive the amount of model displacement. The displacement of the model obtained by changing the structure of the support under the same size and structure of the upper bearing platform is shown in tables 1 and 2, and it can be seen from tables 1 and 2 that the controllable anti-overturning swivel ball joint of the present embodiment is advantageous for the control of the settlement value of the bearing platform.
TABLE 1
TABLE 2
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. The controllable anti-overturning swivel spherical hinge is characterized by comprising a spherical hinge support, a lower spherical hinge, a limiting pin shaft and an upper spherical hinge, wherein the lower spherical hinge is fixed on the spherical hinge support, the upper spherical hinge is coaxially and longitudinally overlapped above the lower spherical hinge, the upper spherical hinge and the lower spherical hinge are assembled in a spherical rotating mode, the limiting pin shaft is fixed at the central position of the lower spherical hinge, a limiting hole for the limiting pin shaft to be inserted is formed in the upper spherical hinge, the limiting pin shaft is of a steel pipe concrete structure, the upper spherical hinge is of a circular convex spherical structure, and the lower spherical hinge is of a circular concave spherical structure matched with the upper spherical hinge.
2. The controllable anti-overturning swivel spherical hinge according to claim 1, further comprising an annular sliding plate, wherein the annular sliding plate is located between the lower spherical hinge and the upper spherical hinge and embedded in the lower spherical hinge, a sliding plate groove for installing the annular sliding plate is arranged on the lower spherical hinge, and the upper spherical hinge and the lower spherical hinge are rotatably assembled through the annular sliding plate.
3. The controllable anti-overturning swivel spherical hinge according to claim 2, further comprising a sealing ring, wherein the sealing ring is located between the lower spherical hinge and the upper spherical hinge and embedded into the lower spherical hinge, a sealing ring groove for installing the sealing ring is arranged on the lower spherical hinge, and the sealing ring groove is annularly sleeved on the inner side and/or the outer side of the sliding plate groove.
4. The controllable anti-overturning swivel spherical hinge according to claim 1, further comprising a top plate, wherein the top plate is installed on the upper spherical hinge, and a grouting hole leading to the center of the controllable anti-overturning swivel spherical hinge is reserved on the top plate and used for backfilling and sealing the center part after the swivel is completed.
5. The controllable anti-overturning swivel spherical hinge according to claim 1, wherein the spherical hinge support is fixedly connected with the lower spherical hinge through bolts and nuts, a lower connecting frame is arranged on the spherical hinge support, an upper connecting frame is arranged on the lower spherical hinge, a screw end of each bolt sequentially penetrates upwards through the lower connecting frame and the upper connecting frame, each bolt is in threaded connection with three nuts, one nut is locked on the upper side of the lower connecting frame, and the other two nuts are respectively locked on the upper side and the lower side of the upper connecting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557658.XU CN212358035U (en) | 2020-07-31 | 2020-07-31 | Controllable anti-overturning swivel spherical hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557658.XU CN212358035U (en) | 2020-07-31 | 2020-07-31 | Controllable anti-overturning swivel spherical hinge |
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| Publication Number | Publication Date |
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| CN212358035U true CN212358035U (en) | 2021-01-15 |
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| CN202021557658.XU Active CN212358035U (en) | 2020-07-31 | 2020-07-31 | Controllable anti-overturning swivel spherical hinge |
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