CN215976807U - Link rod limiting device for bridge - Google Patents
Link rod limiting device for bridge Download PDFInfo
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- CN215976807U CN215976807U CN202122016666.4U CN202122016666U CN215976807U CN 215976807 U CN215976807 U CN 215976807U CN 202122016666 U CN202122016666 U CN 202122016666U CN 215976807 U CN215976807 U CN 215976807U
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- ball head
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- head seat
- limiting device
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Abstract
The utility model relates to a link rod limiting device for a bridge, which comprises transverse link rods, wherein radial stiffening plates are arranged on the outer walls of the transverse link rods; the two ends of the transverse link rod are provided with ball heads, the ball head at one end is connected to the main beam through a ball head seat, and the ball head at the other end is connected to the bridge tower or the bridge pier through the ball head seat. The device solves the limiting problem when the distance between the main beam and the bridge tower (or bridge pier) in the cable bearing structure bridge is large, the link device can limit the translational displacement of the main beam in all directions, and the ball head device at the end part can be self-adapted to the universal rotary deformation requirement of the main beam, so that the fatigue resistance and the durability of the link device are greatly improved.
Description
Technical Field
The utility model relates to the technical field of bridge engineering construction, in particular to a link rod limiting device for a bridge.
Background
In the cable bearing bridge, because the longitudinal and transverse constraint rigidity of the main beam is weaker, a limiting device is usually adopted to limit the translational displacement of the main beam in all directions, the limiting device commonly used in the existing bridge structure mainly comprises a flexible elastic cable, a damper, a rigid wind-resistant support, a limiting stop block and the like, wherein the elastic cable and the damper mainly improve the seismic performance of the bridge by increasing the deformation energy consumption capacity and prolonging the structural period, and a certain upper limit is provided for limiting the translational displacement of the main beam; the wind-resistant support and the limit stop have good displacement effect on the main beam due to strong rigidity, but because the support heights of the wind-resistant support and the limit stop are very limited, when the distance between the main beam and the bridge tower (or bridge pier) is large, the wind-resistant support and the limit stop cannot be installed, so that the development of the main beam limit device suitable for large distance is necessary.
Disclosure of Invention
The utility model aims to provide a link rod limiting device for a bridge, which solves the limiting problem when the distance between a main beam and a bridge tower (or bridge pier) in a cable bearing bridge is large.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a link limiting device for bridge which characterized in that:
the device comprises transverse connecting rods, wherein radial stiffening plates are arranged on the outer walls of the transverse connecting rods;
the two ends of the transverse link rod are provided with ball heads, the ball head at one end is connected to the main beam through a ball head seat, and the ball head at the other end is connected to the bridge tower or the bridge pier through the ball head seat.
The ball head seat comprises a lower ball head seat and an upper ball head seat;
the top surface of the lower ball head seat is provided with a lower hemispherical groove which is matched with the lower part of the ball head;
the upper ball head seat is provided with a vertical through hole, and the shape of the inner wall of the through hole is matched with the upper part of the ball head;
the lower part of the ball head at the end part of the transverse connecting rod is positioned in the lower hemispherical groove of the lower ball head seat, the upper part of the ball head covers the upper ball head seat, and the top of the ball head is positioned at the top of the through hole of the upper ball head seat.
The lower ball head seat and the upper ball head seat are connected and fixed through a screw and a nut which are arranged on the periphery of the ball head.
The side surface of the lower ball head seat is provided with an oil supplementing hole leading to the lower hemispherical groove from the outer wall, and the outer end of the oil supplementing hole is provided with a sealing plug.
The outer edge of the bottom of the lower ball socket is provided with a boss, and the upper ball socket is positioned in the boss.
And a sealing rubber plate is arranged on the contact surface between the lower ball head seat and the upper ball head seat.
Stainless steel corrugated pipes are arranged outside the joint of the transverse link rod and the ball head, the stainless steel corrugated pipes are large at the bottom and small at the top, the lower ends of the stainless steel corrugated pipes are fixed to the periphery of the top of the through hole of the upper ball head seat, and the upper ends of the stainless steel corrugated pipes are fixed to the outer wall of the transverse link rod.
The periphery of the top of the through hole of the upper ball head seat is provided with a ring table, and the upper end and the lower end of the stainless steel corrugated pipe are respectively fixed on the outer wall of the transverse link rod and the ring table of the upper ball head seat through clamps.
A sealing rubber ring is arranged between the upper part of the ball head and the top of the through hole of the upper ball head seat.
The transverse link rod is a hollow rod body, and four radial stiffening plates are uniformly arranged on the periphery of the transverse link rod;
the stiffening plate is axially arranged in a variable cross section mode along the transverse connecting rod, the maximum cross section is arranged in the middle of the transverse connecting rod, and the cross section is reduced when reaching the two ends of the transverse connecting rod.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model solves the limiting problem when the distance between a main beam and a bridge tower (or bridge pier) in a cable bearing bridge is larger, the link device can not only limit the translational displacement of the main beam in all directions, but also can be self-adapted to the universal rotation deformation requirement of the main beam through the ball head device at the end part of the link device.
2. The lower ball socket surrounds the upper ball socket and the sealing rubber plate in the annular direction, so that the integrity and the tightness of the upper ball socket, the lower ball socket and the sealing rubber plate are guaranteed.
3. According to the utility model, the oil supplementing hole is formed in the lower ball head seat, so that a channel is reserved for supplementing lubricating grease in a subsequent ball head rotating space, and the later-period maintenance cost is reduced.
4. The stainless steel corrugated pipe arranged between the top edge of the upper ball head seat and the transverse link rod in a surrounding mode provides secondary protection for a ball head rotating space, plays a role in dustproof and waterproof sealing, has the advantages of ageing resistance and long service life compared with a traditional rubber sleeve, has an accordion effect, can be freely bent into various angles and curvature radiuses due to flexible axial rigidity, and can be suitable for the rotating deformation requirement of the link rod device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 of the embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view.
Fig. 2 is a cross-sectional view of the cross-links and stiffener plates.
Fig. 3 is a schematic sectional structure of the ball head device.
Fig. 4 is a top view of the ball seat structure.
The labels in the figure are:
1. a transverse link; 2. a stiffening plate; 3. a stainless steel bellows; 4. a lower ball cup seat; 5. a main beam; 6. pylons (or piers); 7. mounting a ball head seat; 8. a ball head; 9. sealing the rubber plate; 10. a screw; 11. a nut; 12. an oil supplement hole; 13. a sealing plug; 14. sealing the rubber ring; 15. a first clamp; 16. and a second clamp.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The utility model provides a link rod limiting device for a bridge, which comprises a transverse link rod 1, wherein the outer wall of the transverse link rod 1 is provided with a radial stiffening plate 2; the two ends of the transverse link rod 1 are provided with ball heads 8, the ball head 8 at one end is connected to the main beam 5 through a ball head seat, and the ball head 8 at the other end is connected to the bridge tower 6 or the bridge pier through the ball head seat.
The ball head seat comprises a lower ball head seat 4 and an upper ball head seat 7; the top surface of the lower ball head seat 4 is provided with a lower hemispherical groove which is matched with the lower part of the ball head 8; the upper ball head seat 7 is provided with a vertical through hole, and the shape of the inner wall of the through hole is matched with the upper part of the ball head 8; the lower part of a ball head 8 at the end part of the transverse link rod 1 is positioned in a lower hemispherical groove of the lower ball head seat 4, the upper part of the ball head 8 covers an upper ball head seat 7, and the top part of the ball head 8 is positioned at the top of a through hole of the upper ball head seat 7. The lower ball socket 4 and the upper ball socket 7 are connected and fixed through a screw 10 and a nut 11 which are arranged on the periphery of the ball 8.
An oil supplementing hole 12 leading from the outer wall to the lower hemispherical groove is formed in the side face of the lower ball head seat 4, and a sealing plug 13 is arranged at the outer end of the oil supplementing hole 12.
The outer edge of the bottom of the lower ball socket 4 is provided with a boss, and the upper ball socket 7 is positioned in the boss. A sealing rubber plate 9 is arranged on the contact surface between the lower ball socket 4 and the upper ball socket 7.
The stainless steel corrugated pipe 3 is arranged outside the joint of the transverse link rod 1 and the ball head 8, the stainless steel corrugated pipe 3 is large at the bottom and small at the top, the lower end of the stainless steel corrugated pipe is fixed to the periphery of the top of the through hole of the upper ball head seat 7, and the upper end of the stainless steel corrugated pipe is fixed to the outer wall of the transverse link rod 1. The periphery of the top of the through hole of the upper ball headstock 7 is provided with a ring platform, and the upper end and the lower end of the stainless steel corrugated pipe 3 are respectively fixed on the outer wall of the transverse link rod 1 and the ring platform of the upper ball headstock 7 through hoops. A sealing rubber ring 14 is arranged between the upper part of the ball head 8 and the top of the through hole of the upper ball head seat 7.
The transverse link rod 1 is a hollow rod body, and four radial stiffening plates 2 are uniformly arranged on the periphery of the transverse link rod; the stiffening plate 2 is axially arranged in a variable cross section along the transverse link rod 1, is maximum at the middle position of the transverse link rod 1, and has a reduced cross section from the middle position to two ends of the transverse link rod 1.
Example 1:
referring to fig. 1-4, a link limiting device for a bridge includes a transverse link 1, a stiffener 2 is disposed around the transverse link 1, two ends of the transverse link 1 are connected with ball heads 8, the ball heads 8 are movably disposed in an upper ball head seat 7 and a lower ball head seat 4, a stainless steel corrugated pipe 3 is disposed between a top edge of the upper ball head seat 7 and the transverse link 1 in a surrounding manner, the bottom of the lower ball head seat 4 is respectively mounted on a bridge tower (or bridge pier) 6 and a main beam 5, and a connection mode of the lower ball head seat 4, the bridge tower (or bridge pier) 6 and the main beam 5 is a welding and fixing connection mode in the prior art.
The transverse link rods 1 are horizontally arranged, the interiors of the transverse link rods 1 are hollow to reduce self weight, the stiffening plates 2 arranged on the periphery of the transverse link rods 1 are axially arranged to be variable cross sections along the transverse link rods 1, the cross sections of the stiffening plates 2 are the largest in the middle of the transverse link rods 1, and the cross sections are reduced when reaching two ends of the transverse link rods 1.
One end of the ball head 8 is cut flat and is used for being connected with the transverse link rod 1, the connection mode can be a welding fixed connection mode in the prior art, and the complete end of the ball head is placed in a rotating space formed by the upper ball head seat 7 and the lower ball head seat 4.
The upper ball socket 7 is located above the lower ball socket 4, the upper ball socket 7 is surrounded by the upper half part of the lower ball socket 4 in the circumferential direction, a sealing rubber plate 9 is paved in a relative gap between the upper ball socket 7 and the lower ball socket 4, the sealing performance of an interface of the upper ball socket 7 and the lower ball socket 4 is guaranteed, four bolt holes are formed in the top of the upper ball socket 7, the lower ball socket 4 and the sealing rubber plate 9 are connected into a whole in a matched mode through a screw 10 and a nut 11 in the bolt holes, a rotating space for guaranteeing the ball head 8 is formed jointly, lubricating grease is filled in the rotating space, and the rotating friction of the ball head 8 is reduced.
The edge of the opening of the rotating space, namely the junction of the upper surface of the upper ball head seat 7 and the ball head 8, is coaxially provided with a sealing rubber ring 14 which is adaptive to the shape of the ball head 8, the rear end of the sealing rubber ring 14 is tightly connected with the upper ball head seat 7, the connection mode can be any one of the prior art, for example, the sealing rubber ring 14 is screwed, the front end of the sealing rubber ring is abutted against the ball head 8, and the effect of sealing the rotating space is achieved while the free rotation of the ball head 8 is ensured.
As a preferred implementation manner in this embodiment, an oil supply hole 12 is formed in the lower ball seat 4, a sealing plug 13 is disposed at an outer end of the oil supply hole 12, the oil supply hole 12 is communicated with a rotation space of the ball head 8, and is used for supplying lubricating grease to the rotation space of the ball head 8 when the ball head 8 is not flexible to rotate.
As a preferred embodiment in this embodiment, the cross section of the stainless steel corrugated tube 3 is a variable cross section, the small cross section end of the stainless steel corrugated tube is adapted to the diameter of the transverse link rod 1, the large cross section end of the stainless steel corrugated tube is adapted to the diameter of the ring platform at the top edge of the upper ball seat 7, and the two ends of the stainless steel corrugated tube 3 are clamped by the first clamp 15 and the second clamp 16 to perform the sealing function of dust prevention and water prevention, so the stainless steel corrugated tube 3 is adopted, on one hand, the stainless steel corrugated tube 3 has better durability, on the other hand, the stainless steel corrugated tube can be freely bent into various angles and curvature radii due to the flexible axial rigidity, and can be applied to the requirement of the rotational deformation of the transverse link rod 1.
The bottom surface of the lower ball seat 4 can be correspondingly notched according to the angle between the bottom surface and the mounting surface of the bridge tower (or bridge pier) 6 and the main beam 4, so that the ball head 8 is in a centering state in a rotating space after the link device is mounted, and the symmetry of the initial rotating stroke of the ball head 8 is ensured.
Example 2
In this embodiment, the lubricating grease filled in the rotating space of the ball head 8 in embodiment 1 is replaced by a high-lubricating solid material, such as a teflon plate, and the oil supply hole 12 formed in the lower ball head seat 4 is eliminated. The rest of the construction was the same as in example 1.
Example 3
In the embodiment, the horizontally-arranged link rod limiting device for the bridge in the embodiment 1 is used in the field of vertically-arranged rigid hanger rods in bridges with small loads such as pedestrian bridges, and the like, and the function of the device completely meets the stress requirement of the rigid hanger rods.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.
Claims (10)
1. The utility model provides a link limiting device for bridge which characterized in that:
the device comprises a transverse link rod (1), wherein the outer wall of the transverse link rod (1) is provided with a radial stiffening plate (2);
the two ends of the transverse link rod (1) are provided with ball heads (8), the ball head (8) at one end is connected to the main beam (5) through a ball head seat, and the ball head (8) at the other end is connected to the bridge tower (6) or the bridge pier through the ball head seat.
2. The link limiting device for the bridge according to claim 1, wherein:
the ball head seat comprises a lower ball head seat (4) and an upper ball head seat (7);
the top surface of the lower ball head seat (4) is provided with a lower hemispherical groove which is matched with the lower part of the ball head (8);
the upper ball head seat (7) is provided with a vertical through hole, and the shape of the inner wall of the through hole is matched with the upper part of the ball head (8);
the lower part of a ball head (8) at the end part of the transverse link rod (1) is positioned in a lower hemispherical groove of the lower ball head seat (4), the upper part of the ball head (8) covers an upper ball head seat (7), and the top part of the ball head (8) is positioned at the top of a through hole of the upper ball head seat (7).
3. The link limiting device for the bridge according to claim 2, wherein:
the lower ball head seat (4) and the upper ball head seat (7) are connected and fixed through a screw (10) and a nut (11) which are arranged on the periphery of the ball head (8).
4. The link limiting device for the bridge according to claim 3, wherein:
an oil supplementing hole (12) which leads to the lower hemispherical groove from the outer wall is formed in the side face of the lower ball seat (4), and a sealing plug (13) is arranged at the outer end of the oil supplementing hole (12).
5. The link limiting device for the bridge according to claim 4, wherein:
the outer edge of the bottom of the lower ball socket (4) is provided with a boss, and the upper ball socket (7) is positioned in the boss.
6. The link limiting device for the bridge according to claim 5, wherein:
a sealing rubber plate (9) is arranged on the contact surface between the lower ball socket (4) and the upper ball socket (7).
7. The link limiting device for the bridge of claim 6, wherein:
stainless steel corrugated pipes (3) are arranged outside the connecting part of the transverse link rod (1) and the ball head (8), the stainless steel corrugated pipes (3) are large in size at the bottom and small in size at the top, the lower ends of the stainless steel corrugated pipes are fixed to the periphery of the top of the through hole of the upper ball head seat (7), and the upper ends of the stainless steel corrugated pipes are fixed to the outer wall of the transverse link rod (1).
8. The link limiting device for the bridge of claim 7, wherein:
the periphery of the top of the through hole of the upper ball head seat (7) is provided with a ring table, and the upper end and the lower end of the stainless steel corrugated pipe (3) are respectively fixed on the outer wall of the transverse link rod (1) and the ring table of the upper ball head seat (7) through a hoop.
9. The link limiting device for the bridge of claim 8, wherein:
a sealing rubber ring (14) is arranged between the upper part of the ball head (8) and the top of the through hole of the upper ball head seat (7).
10. The link limiting device for the bridge of claim 9, wherein:
the transverse link rods (1) are hollow rod bodies, and four radial stiffening plates (2) are uniformly arranged on the periphery of the transverse link rods;
the stiffening plate (2) is axially arranged in a variable cross section mode along the transverse connecting rod (1), the maximum cross section is arranged in the middle of the transverse connecting rod (1), and the cross section is reduced when reaching the two ends of the transverse connecting rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122016666.4U CN215976807U (en) | 2021-08-25 | 2021-08-25 | Link rod limiting device for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122016666.4U CN215976807U (en) | 2021-08-25 | 2021-08-25 | Link rod limiting device for bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215976807U true CN215976807U (en) | 2022-03-08 |
Family
ID=80518342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122016666.4U Active CN215976807U (en) | 2021-08-25 | 2021-08-25 | Link rod limiting device for bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215976807U (en) |
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2021
- 2021-08-25 CN CN202122016666.4U patent/CN215976807U/en active Active
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