A beam fall prevention device

Abstract

The utility model discloses a prevent falling roof device, including pier, the box girder is provided with on the top of pier, a plurality of sliding seats are slidably connected on the pier, and the sliding seat is located the both sides of box girder, and the first buffer subassembly is fixedly connected on each sliding seat, and the first buffer subassembly is correspondingly set with the bottom lateral wall of box girder, and the sliding seat is fixedly connected with the pier through the limiting bolt, the both sides of pier top surface are fixedly connected with the mounting plate respectively, and the second buffer subassembly is arranged between the sliding seat and the mounting plate. The utility model discloses simple structure, convenient to use can carry out multistage buffering when the box girder suffers the vibration, improves the overall stability.

Description

Technical Field

[0001] This utility model relates to the field of beam prevention technology, and in particular to a beam prevention device. Background Technology

[0002] In bridge engineering, during significant vibrations or even earthquakes, box girder structures may experience lateral movement. Excessive lateral movement can cause the box girder to detach and collapse. Therefore, anti-falling girder devices are necessary. Existing devices typically involve fixing limiting blocks to the piers and corresponding mating blocks at the bottom of the box girder. The limiting blocks restrain the mating blocks, preventing excessive displacement. However, during severe vibrations, the limiting blocks and mating blocks collide at high speeds, easily breaking and losing their anti-falling function. Therefore, a structurally stable anti-falling girder device with a buffering function is urgently needed. Utility Model Content

[0003] The purpose of this invention is to provide a beam-prevention device to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides an anti-falling beam device, including a pier column, a box girder is arranged above the pier column, a plurality of sliding seats are slidably connected to the pier column, the plurality of sliding seats are located on both sides of the box girder, a first buffer assembly is fixedly connected to each sliding seat, the first buffer assembly is correspondingly arranged with the bottom side wall of the box girder, and the sliding seat is fixedly connected to the pier column by a limiting bolt; mounting plates are fixedly connected to both sides of the top surface of the pier column, and a second buffer assembly is arranged between the sliding seat and the mounting plate.

[0005] Preferably, the first buffer assembly includes a support plate fixedly connected to the top surface of the sliding seat, a connecting rod extending through the support plate, the connecting rod being slidably connected to the support plate, a fixing block being fixedly connected to one end of the connecting rod near the bottom side wall of the box girder, the fixing block having an inclined surface parallel to the bottom side wall of the box girder on its side, a limit block being fixedly connected to the other end of the connecting rod, and a first buffer spring being fixedly connected between the fixing block and the support plate.

[0006] Preferably, the second buffer assembly includes a moving block fixedly connected to the sliding seat. The moving block has a right-angled trapezoidal cross-section, and the plane containing the base of the right-angled trapezoid is fixedly connected to the sliding seat. The top surface of the moving block is an inclined surface facing the mounting plate. A lifting block is slidably connected to the side wall of the mounting plate. The lifting block has an inclined surface adapted to the moving block on the side near the moving block. The lifting block slides with the moving block. A limiting post is fixedly connected to the top surface of the lifting block. The limiting post passes through the mounting plate and is slidably connected to the mounting plate. A second buffer spring is fixedly connected between the top surface of the lifting block and the mounting plate.

[0007] Preferably, rubber pads are fixedly connected to the side of the moving block near the mounting plate and the side of the mounting plate, respectively, with the two rubber pads being arranged correspondingly.

[0008] Preferably, one side of the sliding seat near the bottom sidewall of the box girder is parallel to the bottom sidewall of the box girder, and anti-collision pads are fixedly connected to the side of the sliding seat near the bottom sidewall of the box girder and the bottom sidewall of the box girder, respectively, with two anti-collision pads being arranged correspondingly.

[0009] This utility model discloses the following technical effects: By setting a sliding seat on the pier and a first buffer component on the sliding seat, the impact of the box girder is first buffered when the box girder shifts. When the movement is large and the impact force exceeds the limit of the first buffer component, it will directly collide with the sliding seat, breaking the limiting bolt and causing the sliding seat to slide. During the sliding process, the sliding seat will compress the second buffer component, further buffering the impact. Finally, the mounting plate limits the sliding seat, thus preventing the box girder from slipping. This utility model has a simple structure, is easy to use, and can provide multi-stage buffering when the box girder is subjected to vibration, improving overall stability. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the anti-falling beam device of this utility model;

[0012] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0013] The components are: 1. Pier; 2. Box girder; 3. Sliding seat; 4. Limiting bolt; 5. Mounting plate; 6. Support plate; 7. Connecting rod; 8. Fixing block; 9. Limiting block; 10. First buffer spring; 11. Moving block; 12. Lifting block; 13. Limiting column; 14. Second buffer spring; 15. Rubber pad; 16. Anti-collision pad. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Reference Figure 1-2 This utility model provides a beam-prevention device, including a pier 1, a box girder 2 mounted on top of the pier 1, and several sliding seats 3 slidably connected to the pier 1, located on both sides of the box girder 2. Each sliding seat 3 is fixedly connected to a first buffer assembly, which is correspondingly positioned to the bottom sidewall of the box girder 2. The sliding seat 3 is fixedly connected to the pier 1 by limiting bolts 4. Mounting plates 5 are fixedly connected to both sides of the top surface of the pier 1, and a second buffer assembly is positioned between the sliding seat 3 and the mounting plate 5. By setting the sliding seat 3 on the pier 1 and the first buffer assembly on the sliding seat 3, the sliding seat 3 first contacts the first buffer assembly when the box girder 2 deviates, buffering the impact on the box girder 2. When the movement trend is large and the impact force exceeds the limit of the first buffer assembly, it will directly collide with the sliding seat 3, breaking the limiting bolt 4 and causing the sliding seat 3 to slide. During the sliding process, the sliding seat 3 will squeeze the second buffer assembly, further buffering the impact. Finally, the mounting plate 5 is used to limit the sliding seat 3, thereby preventing the box girder 2 from falling off the platform.

[0017] A further optimized design includes a first buffer assembly comprising a support plate 6 fixedly connected to the top surface of the sliding seat 3. A connecting rod 7 is threaded through the support plate 6 and slidably connected to it. A fixing block 8 is fixedly connected to one end of the connecting rod 7 near the bottom sidewall of the box girder 2. The fixing block 8 has an inclined surface parallel to the bottom sidewall of the box girder 2. A limit block 9 is fixedly connected to the other end of the connecting rod 7. A first buffer spring 10 is fixedly connected between the fixing block 8 and the support plate 6. When the box girder 2 moves and contacts and presses against the fixing block 8, it presses against the first buffer spring 10. The first buffer spring 10 converts the kinetic energy of the box girder 2 into elastic potential energy, thereby providing buffering.

[0018] Further optimizing the scheme, the second buffer component includes a moving block 11 fixedly connected to the sliding seat 3. The cross-section of the moving block 11 is a right trapezoid. The plane containing the base of the right trapezoid of the moving block 11 is fixedly connected to the sliding seat 3. The top surface of the moving block 11 is an inclined surface facing the mounting plate 5. A lifting block 12 is slidably connected to the side wall of the mounting plate 5. The side of the lifting block 12 near the moving block 11 has an inclined surface adapted to the moving block 11. The lifting block 12 and the moving block 11 are slidably engaged. A limiting post 13 is fixedly connected to the top surface of the lifting block 12. The limiting post 13 passes through the mounting plate 5 and is slidably connected to the mounting plate 5. A second buffer spring 14 is fixedly connected between the top surface of the lifting block 12 and the mounting plate 5. During the movement of the sliding block 3 and the moving block 11, the inclined plane will drive the lifting block 12 to move upward, thereby squeezing the second buffer spring 14 to buffer the movement of the box beam 2. When the lifting block 12 is completely on the moving block 11, the moving block 11 contacts the mounting plate 5, thereby limiting the box beam 2 and preventing it from displacing too much.

[0019] In a further optimized design, rubber pads 15 are fixedly connected to both the side of the moving block 11 near the mounting plate 5 and the side of the mounting plate 5, with the two rubber pads 15 correspondingly positioned. The rubber pads 15 protect the mounting plate 5 from impact damage.

[0020] In a further optimized design, one side of the sliding seat 3 near the bottom sidewall of the box girder 2 is parallel to the bottom sidewall of the box girder 2. Anti-collision pads 16 are fixedly connected to both the side of the sliding seat 3 near the bottom sidewall of the box girder 2 and the bottom sidewall of the box girder 2, with two anti-collision pads 16 correspondingly positioned. By fixing anti-collision pads 16 to both the side of the sliding seat 3 near the bottom sidewall of the box girder 2 and the bottom sidewall of the box girder 2, damage to the box girder 2 and the sliding seat 3 during impact can be prevented. Simultaneously, the anti-collision pads 16 possess a certain degree of elasticity, providing a buffering effect.

[0021] The working process of this utility model is as follows: When the box girder 2 is vibrated and shifts, the box girder 2 contacts and presses the fixed block 8, thereby compressing the first buffer spring 10. The first buffer spring 10 absorbs kinetic energy and converts it into elastic potential energy to buffer it. When the kinetic energy of the box girder 2 is too high, it will directly collide with the sliding seat 3 through the anti-collision pad 16. When the impact of the box girder 2 exceeds the strength of the limit bolt 4, the limit bolt 4 breaks, thereby pushing the sliding seat 3 to slide. During the sliding process, the sliding seat 3 drives the moving block 11 to move, which in turn lifts the lifting block 12, causing the second buffer spring 14 to be compressed for further buffering. When the lifting block 12 moves completely above the moving block 11, the rubber pad 15 on the moving block 11 collides with the rubber pad 15 embedded in the mounting plate 5, thereby limiting the box girder 2 and preventing it from shifting too much.

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A beam-prevention device, characterized in that: The system includes a pier (1), a box girder (2) is provided above the pier (1), and a plurality of sliding seats (3) are slidably connected to the pier (1). The plurality of sliding seats (3) are located on both sides of the box girder (2). A first buffer assembly is fixedly connected to each sliding seat (3). The first buffer assembly is correspondingly provided to the bottom side wall of the box girder (2). The sliding seat (3) is fixedly connected to the pier (1) by a limiting bolt (4). Mounting plates (5) are fixedly connected to both sides of the top surface of the pier (1). A second buffer assembly is provided between the sliding seat (3) and the mounting plate (5).

2. The anti-falling beam device according to claim 1, characterized in that: The first buffer assembly includes a support plate (6) fixedly connected to the top surface of the sliding seat (3). A connecting rod (7) is provided through the support plate (6). The connecting rod (7) is slidably connected to the support plate (6). A fixing block (8) is fixedly connected to one end of the connecting rod (7) near the bottom side wall of the box girder (2). An inclined surface parallel to the bottom side wall of the box girder (2) is opened on the side of the fixing block (8). A limit block (9) is fixedly connected to the other end of the connecting rod (7). A first buffer spring (10) is fixedly connected between the fixing block (8) and the support plate (6).

3. The anti-falling beam device according to claim 1, characterized in that: The second buffer assembly includes a moving block (11) fixedly connected to the sliding seat (3). The moving block (11) has a right trapezoidal cross section. The plane containing the base of the right trapezoid of the moving block (11) is fixedly connected to the sliding seat (3). The top surface of the moving block (11) is an inclined surface facing the mounting plate (5). A lifting block (12) is slidably connected to the side wall of the mounting plate (5). The lifting block (12) has an inclined surface adapted to the moving block (11) on the side close to the moving block (11). The lifting block (12) is slidably engaged with the moving block (11). A limiting post (13) is fixedly connected to the top surface of the lifting block (12). The limiting post (13) penetrates the mounting plate (5) and is slidably connected to the mounting plate (5). A second buffer spring (14) is fixedly connected between the top surface of the lifting block (12) and the mounting plate (5).

4. The anti-falling beam device according to claim 3, characterized in that: Rubber pads (15) are fixedly connected to the side of the moving block (11) near the mounting plate (5) and the side of the mounting plate (5), respectively, and the two rubber pads (15) are arranged correspondingly.

5. The anti-falling beam device according to claim 1, characterized in that: The side of the sliding seat (3) near the bottom side wall of the box girder (2) is parallel to the bottom side wall of the box girder (2). Anti-collision pads (16) are fixedly connected to the side of the sliding seat (3) near the bottom side wall of the box girder (2) and the bottom side wall of the box girder (2), respectively. The two anti-collision pads (16) are set accordingly.

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