Rotation limiting device for swivel bridge

Abstract

The utility model relates to the technical field of swivel bridges, and provides a rotation limiting device for a swivel bridge, which comprises a lower bearing platform, the center of the top surface of the lower bearing platform is rotatably connected with an upper bearing platform, and the edge of the top of the lower bearing platform is fixedly connected with a limiting assembly; during use, a fixing plate is connected to the side face of the upper bearing platform, and a limiting assembly is fixedly connected to the preset position of the top of the lower bearing platform, so that when a bridge drives the upper bearing platform to rotate anticlockwise to the preset position, the fixing plate abuts against and pushes a baffle, and when the baffle drives a moving block to slide along the surface of a sliding rod, two springs are extruded; the upper bearing platform is buffered and decelerated until the contact block abuts against the surface of the fixed block, and after the upper bearing platform is limited and blocked, the telescopic end of the hydraulic cylinder extends to reversely push the movable block to reset until the baffle pushes the fixed plate to move forwards to the correct butt joint position, the over-rotation distance of the upper bearing platform is compensated, and the bridge is made to complete the rotation action.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotating position limiting device for swivel bridge. BACKGROUND

[0002] The swivel bridge is a bridge constructed by swivel method, and the swivel construction of the bridge refers to a construction method that a bridge structure is formed (poured or spliced) at a position other than the design axis and then positioned by swivel, which can convert the work in the air above the obstacle into the work on the shore or near the ground, and according to the swivel direction of the bridge structure, it can be divided into vertical swivel construction method, horizontal swivel construction method (referred to as vertical swivel method and horizontal swivel method) and the method combining horizontal swivel and vertical swivel, among which the horizontal swivel method is most applied, and is mainly applied to the situation that the support cannot be provided for crossing the valley, river, railway and highway, etc., and the swivel system of the swivel bridge is composed of lower swivel disc, upper swivel disc, spherical hinge, slide and traction system.

[0003] In the prior art, the swivel process is generally realized by forming a rotating couple through the pulling of the traction cable by the jack, but due to the error in the mechanical and human operation, the existing swivel bridge often appears over-swivel when the swivel is controlled, which leads to inaccurate positioning of the bridge, and the butt joint position needs to be adjusted by personnel for many times, and the working efficiency is low. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem in the prior art that due to the error in the mechanical and human operation, the existing swivel bridge often appears over-swivel when the swivel is controlled, which leads to inaccurate positioning of the bridge, and the butt joint position needs to be adjusted by personnel for many times, and the working efficiency is low, and provides a rotating position limiting device for swivel bridge, in order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A rotating position limiting device for swivel bridge, comprising a lower bearing platform, an upper bearing platform is rotatably connected to the center of the top surface of the lower bearing platform, and a limiting assembly is fixedly connected to the edge of the top of the lower bearing platform;

[0006] The limiting assembly comprises a base, a hydraulic cylinder is connected to the base, a connecting plate is fixedly connected to the extension end of the hydraulic cylinder, an installation plate is arranged in front of the connecting plate in parallel and at intervals, a connecting rod is connected between the connecting plate and the installation plate, a moving block is arranged in front of the installation plate, two symmetrical slide rods are connected to the front surface of the installation plate, the moving block is slidably connected to the two slide rods, a connecting rod is fixedly connected to the front surface of the moving block, a fixed plate is radially arranged on the side surface of the upper bearing platform, a baffle is arranged on the side surface of the fixed plate, a U-shaped bracket is connected to the baffle, the connecting rod extends into the U-shaped bracket, and the connecting rod is hingedly connected to the U-shaped bracket.

[0007] Preferably, a spring is sleeved on each slide rod, and the spring is arranged between the moving block and the mounting plate.

[0008] Preferably, a reinforcing block is fixedly connected to the rear surface of the fixing plate, and the reinforcing block is connected with the upper bearing platform.

[0009] Preferably, a contact block is fixedly connected to the center of the rear surface of the moving block, and a fixing block is fixedly connected to the center of the front surface of the mounting plate.

[0010] Preferably, an end surface of the fixing block is provided with a trigger switch.

[0011] Preferably, a buzzer is connected to the mounting plate, and the buzzer is electrically connected with the trigger switch.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1. In the utility model, when in use, the fixing plate is arranged on the upper bearing platform, and a limiting assembly is fixedly connected to the top of the lower bearing platform at a predetermined position, so that when the bridge drives the upper bearing platform to rotate counterclockwise to a predetermined position, the fixing plate abuts against and pushes the baffle, the baffle drives the moving block to slide along the surface of the slide rod, the two springs are extruded, the elastic reset action of the springs is utilized to buffer and slow down the upper bearing platform, until the contact block abuts against the surface of the fixing block, and after the upper bearing platform is limited and blocked, the extension end of the hydraulic cylinder is elongated, the moving block is reversely pushed to reset, until the baffle pushes the fixing plate to move forward to the correct butt joint position, the over-rotation distance of the upper bearing platform is compensated, the bridge completes the rotating action, and the problem that personnel needs to adjust the butt joint position for many times and the work efficiency is low when the bridge rotates is solved.

[0014] 2. In the utility model, when in use, the trigger switch is arranged on the inner surface of the fixing block, so that when the contact block abuts against the fixing block, the trigger switch is extruded by pressure and sends an instruction to the buzzer, the buzzer emits an alarm buzzing sound, personnel can judge the operation through the alarm buzzing sound when the bridge rotates, and the utility model has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a structural schematic view of the limiting assembly of the utility model;

[0017] Figure 3 It is a structural schematic view of the buzzer of the utility model;

[0018] Figure 4 It is a structural schematic view of the baffle of the utility model.

[0019] Legend: 1. Lower support platform; 2. Upper support platform; 3. Limiting component; 301. Base; 302. Hydraulic cylinder; 303. Connecting plate; 304. Connecting rod; 305. Buzzer; 306. Mounting plate; 307. Slide rod; 308. Spring; 309. Contact block; 310. Moving block; 311. Connecting rod; 312. U-shaped frame; 313. Baffle; 314. Fixing block; 315. Trigger switch; 4. Fixing plate; 5. Reinforcing block. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figures 1-4 As shown, this utility model provides a rotation limiting device for a rotating bridge, including: a lower support 1, an upper support 2 rotatably connected to the top center of the lower support 1, and a limiting component 3 fixedly connected to the top of the lower support 1 near one side edge; the limiting component 3 includes a base (301), a hydraulic cylinder (302) connected to the base (301), a connecting plate (303) fixedly connected to the telescopic end of the hydraulic cylinder (302), an installation plate (306) parallel to and spaced apart from the front of the connecting plate (303), and a connecting rod (304) connecting the connecting plate (303) and the installation plate (306). A movable block (310) is provided in front of the mounting plate (306). Two symmetrically arranged sliding rods (307) are connected to the front surface of the mounting plate (306). The movable block (310) is slidably connected to the two sliding rods (307). A connecting rod (311) is fixedly connected to the front surface of the movable block (310). A radially arranged fixed plate (4) is connected to the side of the upper support (2). A baffle (313) is provided on the side of the fixed plate (4). A U-shaped frame (312) is connected to the baffle (313). The connecting rod (311) extends into the U-shaped frame (312) and is hinged to the U-shaped frame (312).

[0023] The overall effect of Embodiment 1 is that, during bridge rotation, by pre-fixing the base 301 to one side edge of the lower bearing platform 1, the baffle 313 is positioned correctly after the bridge rotation. Under external traction, the upper bearing platform 2 rotates counterclockwise on top of the lower bearing platform 1. The fixing plate 4 fixed to the side of the upper bearing platform 2 gradually comes into contact with the front surface of the baffle 313 during the bridge rotation, forcing the U-shaped frame 312 to adaptively rotate on the connecting rod 311, so that the front surface of the baffle 313 always comes into contact with the rear surface of the fixing plate 4. When the connecting rod 311 is pushed by force, the moving block 310 slides backward along the outer surface of the two sliding rods 307 and squeezes the two springs 308, causing them to deform and contract. The elastic reset characteristic of 08 buffers and decelerates the rotation of the upper bearing platform 2 until the contact block 309 abuts against the surface of the fixed block 314, which plays a blocking and limiting role. After the upper bearing platform 2 stops completely, the hydraulic cylinder 302 is activated, causing its telescopic end to slowly extend outward, pushing the connecting plate 303. Under the connection of multiple connecting rods 304, the mounting plate 306 is pushed forward, causing the moving block 310 to slide forward along the surface of the two sliding rods 307 until the baffle 313 is reset, which plays a counter-pushing role against the upper bearing platform 2, so that the upper bearing platform 2 will drive the bridge to be accurately positioned in the predetermined position after rotation, compensating for the over-rotation distance of the upper bearing platform 2, and enabling the bridge to complete the rotation action. This solves the problem in the background technology that when the bridge rotates over-rotation, the docking position needs to be adjusted by personnel multiple times, resulting in low work efficiency.

[0024] Example 2: As Figures 1-4 As shown, a reinforcing block 5 is fixedly connected to the rear surface of the fixed plate 4, and the top of the reinforcing block 5 is connected to the upper support 2. A contact block 309 is fixedly connected to the center of the rear surface of the movable block 310. A fixed block 314 is fixedly connected to the center of the front surface of the mounting plate 306. A trigger switch 315 is provided on the end face of the fixed block 314. The trigger switch 315 is used to cooperate with the contact block 309. A buzzer 305 is provided at the center of the rear surface of the mounting plate 306. The buzzer 305 is electrically connected to the trigger switch 315.

[0025] The effect achieved by the entire embodiment 2 is that, during the bridge rotation process, the strength of the fixed plate 4 is improved by fixing the reinforcing block 5 between the rear surface of the fixed plate 4 and the upper bearing 2. By setting a trigger switch 315 on the fixed block 314, when the contact block 309 touches the fixed block 314, the trigger switch 315 is subjected to pressure and sends a command to the buzzer 305, causing it to emit an alarm buzzer sound. This makes it convenient for personnel to judge the operation by the alarm buzzer sound during the bridge rotation, and it is highly practical.

[0026] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A rotation limiting device for a swivel bridge, characterized by, The application relates to a support platform, which comprises a lower support platform (1) and a upper support platform (2) connected to the center of the top surface of the lower support platform (1), and a limiting assembly (3) connected to the top edge of the lower support platform (1). The limiting assembly (3) comprises a base (301) connected with a hydraulic cylinder (302), the telescopic end of the hydraulic cylinder (302) is fixedly connected with a connecting plate (303), the front of the connecting plate (303) is provided with a mounting plate (306) arranged in parallel and spaced apart, a connecting rod (304) is connected between the connecting plate (303) and the mounting plate (306), the front of the mounting plate (306) is provided with a moving block (310), the front surface of the mounting plate (306) is connected with two symmetrically arranged slide rods (307), the moving block (310) is slidably connected on the two slide rods (307), the front surface of the moving block (310) is fixedly connected with a connecting rod (311), the side surface of the upper support platform (2) is connected with a radially arranged fixing plate (4), the side surface of the fixing plate (4) is provided with a baffle (313), the baffle (313) is connected with a U-shaped frame (312), the connecting rod (311) extends into the U-shaped frame (312), and the connecting rod (311) is hingedly connected with the U-shaped frame (312).

2. The rotation limiting device for the swivel bridge according to claim 1, wherein: A spring (308) is sleeved on each slide rod (307) and arranged between the moving block (310) and the mounting plate (306).

3. The rotation limiting device for the swivel bridge according to claim 2, wherein: The rear surface of the fixing plate (4) is fixedly connected with a reinforcing block (5) connected with the upper support platform (2).

4. The rotation limiting device for the swivel bridge according to claim 3, wherein: The rear surface of the moving block (310) is fixedly connected with a contact block (309) at the center, and the front surface of the mounting plate (306) is fixedly connected with a fixing block (314) at the center.

5. The rotation limiting device for the swivel bridge according to claim 4, wherein: The end surface of the fixing block (314) is provided with a trigger switch (315).

6. The rotation limiting device for the swivel bridge according to claim 5, wherein: The mounting plate (306) is connected with a buzzer (305) electrically connected with the trigger switch (315).

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