Middle-mounted damping anti-beam-falling device

Abstract

The utility model provides a mid-set type damping anti-beam-falling device which comprises an upper plate and a bottom plate, two limiting clamping frames are symmetrically arranged at the bottom of the upper plate, a middle plate is clamped between the two limiting clamping frames in a sliding mode, the middle plate and the bottom plate are both in a T shape, the middle plate makes contact with the bottom of the upper plate, the bottom plate is located below the upper plate, and the middle plate is connected with the bottom of the upper plate in a sliding mode. Connecting lugs are arranged on the two side walls of the middle plate and the two side walls of the bottom plate. A sliding pair formed by the upper plate and the middle plate can adapt to longitudinal displacement of the bridge under extreme conditions such as earthquakes. Due to the design, the bridge can keep certain flexibility under the action of external force, so that stress concentration and damage in the structure are avoided. The arrangement of the sliding gap enables the upper plate and the middle plate to flexibly adapt to the corner change of the beam end. The structure damage and damage caused by external force such as earthquakes can be reduced, the durability of the bridge is improved, and the service life of the bridge is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-falling beam devices, in particular to a centrally mounted damping anti-falling beam device. Background Art

[0002] In bridge engineering, beam-fall prevention devices are critical components that ensure the stability and safety of bridge structures under extreme conditions, such as earthquakes. Traditional beam-fall prevention devices often utilize rigid structures, such as concrete blocks or I-beams. These structures often collide directly with the bridge beams during earthquakes, lacking sufficient buffering and energy dissipation mechanisms, easily leading to damage to the devices and the bridge structure.

[0003] With the continuous advancement of bridge seismic technology, researchers are exploring more efficient and reliable beam-drop prevention devices. Among these, a new beam-drop prevention device that combines mild steel damping with a sliding pair design is gradually emerging. This device incorporates mild steel damping materials, leveraging their elastic-plastic deformation during earthquakes to absorb and dissipate energy, thereby reducing the seismic response of the bridge structure. Furthermore, the sliding pair design enables the device to adapt to the longitudinal displacement of the bridge during an earthquake, reducing stress and deformation within the structure.

[0004] However, in practical applications, it has been discovered that even with the use of mild steel damping and sliding pair designs, the stress state and stress distribution of the anti-drop beam device still exhibit a certain degree of unevenness. In particular, stress concentration at the connection points of the damping steel plates often leads to material damage and joint failure. This not only affects the reliability and durability of the anti-drop beam device but also poses a potential threat to the safety of the bridge structure. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a centrally mounted damping anti-falling beam device.

[0006] The two rails are connected by two cams, and the two rails are connected by a plurality of cams, each of which is connected to the support rail of the vehicle frame by a plurality of cams.

[0007] Preferably, the upper plate and the middle plate form a sliding pair.

[0008] Preferably, the plurality of anchors are respectively distributed in a rectangular shape at the four corners of the upper plate and the four corners of the bottom plate.

[0009] Preferably, a circular groove is formed through the front surface of the steel damping plate.

[0010] Preferably, semicircular grooves are symmetrically provided at both ends of the steel damping plate.

[0011] The utility model has the following beneficial effects:

[0012] 1. The sliding pair formed by the upper and middle plates can accommodate the longitudinal displacement of the bridge under extreme conditions such as earthquakes. This design allows the bridge to maintain a certain degree of flexibility when subjected to external forces, thereby preventing stress concentration and damage within the structure. The sliding gap between the upper and middle plates allows for flexible adaptation to changes in beam end rotation. This helps reduce structural damage and destruction caused by external forces such as earthquakes, thereby improving the durability and service life of the bridge.

[0013] 2. The upper and middle plates are connected with inward-facing ends, ensuring uniform stress distribution across the multiple layers of steel damping plates. This design avoids the risk of damage to a single layer of steel plates due to excessive stress, thereby improving the overall stability and safety of the structure. Through rational structural design and material selection, the steel stoppers maintain structural stability. Under extreme conditions such as earthquakes, they effectively limit beam displacement, preventing it from falling off its supports and ultimately preventing the entire bridge structure from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the upper plate and the middle plate of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the steel damping component of the present invention.

[0017] Among them, 1. Upper plate; 2. Middle plate; 3. Steel damping plate; 4. Steel cable; 5. Bottom plate; 6. Anchor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0019] like Figure 1-2 As shown, the embodiment of the utility model provides a centrally mounted damping anti-falling beam device, including an upper plate 1 and a bottom plate 5, two limit brackets are symmetrically arranged at the bottom of the upper plate 1, and a middle plate 2 is slidably clamped between the two limit brackets, and the middle plate 2 and the bottom plate 5 are both T-shaped, the middle plate 2 contacts the bottom of the upper plate 1, and the bottom plate 5 is located below the upper plate 1, and the two side walls of the middle plate 2 and the bottom plate 5 are both provided with connecting ears, and the two side connecting ears of the middle plate 2 and the two side connecting ears of the bottom plate 5 are respectively connected by two steel cables 4, and the two steel cables 4 are symmetrically distributed, and a plurality of steel damping plates 3 are arranged between the two steel cables 4, and a plurality of fixing grooves are equidistantly provided at the bottom of the middle plate 2 and the top of the bottom plate 5, and the upper and lower ends of the plurality of steel damping plates 3 are respectively clamped in the bottom fixing groove of the middle plate 2 and the top fixing groove of the bottom plate 5, and the upper plate 1 and the bottom plate 5 are both provided with a plurality of anchors 6.

[0020] The sliding pair design, formed by the upper plate 1 and the middle plate 2, allows the entire device to flexibly adapt to the longitudinal displacement of the bridge, reducing internal stress and deformation, thereby protecting the bridge's main structure from damage. The introduction of the sliding pair allows the device to better absorb and disperse energy under extreme conditions such as earthquakes, reducing the seismic response of the bridge structure and improving the bridge's seismic performance.

[0021] Anchors 6 are arranged in a rectangular pattern at the four corners of the upper plate 1 and the bottom plate 5, forming a stable connection system that ensures a tight connection between the device and the bridge structure and prevents structural failure due to loose connections. The rectangular distribution of anchors 6 effectively distributes the forces acting on the device, preventing structural damage caused by localized excessive forces and improving the device's reliability and durability.

[0022] The circular grooves help disperse stress when the steel damping plate 3 is subjected to force, preventing localized damage caused by stress concentration and improving the fatigue resistance and service life of the steel damping plate 3. The presence of the circular grooves allows the steel damping plate 3 to more fully absorb and dissipate energy during deformation, enhancing the damping effect of the device and further reducing the seismic response of the bridge structure. Example 2

[0023] like Figure 3 As shown, an embodiment of the present invention provides a centrally mounted damping anti-falling beam device, comprising a steel damping plate 3 with semicircular grooves symmetrically provided at both ends.

[0024] Symmetrical semicircular grooves are formed at both ends of the steel damping plate 3 to effectively disperse and alleviate the stress concentration caused by the load. This design makes the stress distribution on the steel damping plate 3 more uniform, reducing the risk of material damage caused by localized excessive stress.

[0025] The semicircular grooves increase the deformation space of the steel damping plate 3, allowing it to deform more fully elastically and plastically when subjected to external forces, thereby more effectively absorbing and dissipating energy. This enhanced deformation capacity helps improve the damping performance of the device and further reduce the seismic response of the bridge structure.

[0026] The design of the semicircular groove is relatively simple and easy to implement during the processing.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrally mounted damping anti-falling beam device, comprising an upper plate (1) and a bottom plate (5), characterized in that: Two limit brackets are symmetrically arranged at the bottom of the upper plate (1), and a middle plate (2) is slidably connected between the two limit brackets. The middle plate (2) and the bottom plate (5) are both T-shaped. The middle plate (2) contacts the bottom of the upper plate (1), and the bottom plate (5) is located below the upper plate (1). Both side walls of the middle plate (2) and the bottom plate (5) are provided with connecting ears. The connecting ears on both sides of the middle plate (2) and the connecting ears on both sides of the bottom plate (5) are respectively connected by two steel cables (4). The two steel cables (4) are symmetrically distributed. A plurality of steel damping plates (3) are arranged between the two steel cables (4). The bottom of the middle plate (2) and the top of the bottom plate (5) are both equidistantly provided with a plurality of fixing grooves. The upper and lower ends of the plurality of steel damping plates (3) are respectively clamped in the bottom fixing groove of the middle plate (2) and the top fixing groove of the bottom plate (5). Both the upper plate (1) and the bottom plate (5) are provided with a plurality of anchoring pieces (6).

2. A centrally mounted damping anti-falling beam device according to claim 1, characterized in that: The upper plate (1) and the middle plate (2) form a sliding pair.

3. The centrally mounted damping anti-falling beam device according to claim 1, characterized in that: The plurality of anchoring pieces (6) are respectively distributed in a rectangular shape at the four corners of the upper plate (1) and the four corners of the bottom plate (5).

4. The centrally mounted damping anti-falling beam device according to claim 1, characterized in that: A circular groove is provided through the front surface of the steel damping plate (3).

5. The centrally mounted damping anti-falling beam device according to claim 1, characterized in that: Semicircular grooves are symmetrically provided at both ends of the steel damping plate (3).

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