Floating wharf movable steel approach bridge with limiting function
By designing a limit device in the floating dock movable steel guide bridge to limit the swing angle of the guide bridge body, the problem of off-position of the steel guide bridge when the water level changes is solved, and safety improvement is achieved.
Patent Information
- Application Number
- CN202421657916.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing floating dock movable steel guide bridge is prone to off-level when the water level is lower than or higher than the designed water level, causing the steel guide bridge to fall into the water, posing a safety risk.
A floating dock movable steel guide bridge with limit function is designed, and the limit device is used to include limit piles and limit connection seats. It is arranged through long through holes and limit pile sleeves to limit the swing angle of the guide bridge main body and prevent off-position.
It effectively prevents the steel guide bridge from being off-level when the water level changes, avoids the steel guide bridge falling into the water, and improves safety.
Smart Images
Figure CN223017397U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of port engineering, and particularly relates to a movable steel approach bridge of a floating dock with a limiting function. Background Art
[0002] The floating dock is a common dock type in China's inland river basins, usually applicable to corresponding loading and unloading processes such as belt conveyors, pipelines, vehicles, and mobile machinery, as well as the boarding and alighting of passengers. The floating dock mainly consists of a pontoon and its mooring facilities, a movable steel approach bridge, a fixed approach bridge, and a working platform, etc. One end of the movable steel approach bridge is placed on the pontoon, and the other end is directly supported on the fixed platform; usually, an arc-shaped support is arranged at the near-shore end of the movable steel approach bridge, and a roller support is arranged at the pontoon end. During the normal operation of the floating dock, the pontoon floats between the design high water level and the design low water level, rises and falls at its original position, the movable steel approach bridge is supported on the platform around the arc-shaped support end and rotates around its own axis, and the roller support at the pontoon end slides horizontally on the pontoon sliding platform to adapt to the water level variation range. Pulling rings are usually provided at both ends of the movable steel approach bridge, and are respectively connected with the pontoon and the fixed platform by iron chains for limiting, so as to achieve the purpose of protecting the steel approach bridge. However, when the water level in the port basin is lower than the design low water level, the inclination slope of the movable steel approach bridge exceeds the design range, and the water flow impact is severe during the flood period. The movable steel approach bridge cannot maintain the spatial state under the design working conditions. One end of the arc-shaped support of the steel approach bridge is prone to displacement and detachment from the platform. In addition, the roller support end of the steel approach bridge is also prone to displacement and detachment from the pontoon, resulting in the safety risk of the steel approach bridge falling into the water.
[0003] In summary, there is an urgent need for a movable steel approach bridge of a floating dock with a limiting function to solve or at least partially solve the problems existing in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a movable steel approach bridge of a floating dock with a limiting function, aiming to solve the problem that when the water level of the existing steel approach bridge is lower or higher than the design water level, the steel approach bridge is prone to displacement and fall into the water. The specific technical solution is as follows:
[0005] A movable steel approach bridge of a floating dock with a limiting function includes a bridge main body, an arc-shaped support, and a roller support. The arc-shaped support is arranged at the first end of the bridge main body, and the roller support is arranged at the second end of the bridge main body. The bridge main body is swingably arranged around the central axis of the arc-shaped support. The limiting device is further included, and the limiting device includes a limiting pile and a limiting connecting seat. The limiting pile is used for fixedly connecting to the platform, the limiting connecting seat is installed at the bottom of the first end of the bridge main body, a long strip-shaped through hole arranged along the length direction of the bridge main body is provided on the limiting connecting seat, the limiting connecting seat is sleeved on the limiting pile through the long strip-shaped through hole, and the swing angle of the bridge main body is limited by the abutment between the wall surface of the long strip-shaped through hole and the wall surface of the limiting pile.
[0006] Further, a cross beam is arranged at the first end of the approach bridge main body. The cross beam is arranged on the approach bridge main body in the width direction. The limiting device further includes a reinforcing rib plate. One side of the reinforcing rib plate is fixedly connected to the limiting connection seat, and the other side of the reinforcing rib plate is fixedly connected to the cross beam.
[0007] Further, two arc-shaped supports are arranged, and the two arc-shaped supports are symmetrically arranged along the central axis of the approach bridge main body. The limiting device is located on the central axis of the approach bridge main body.
[0008] Further, the limiting device further includes a bushing. The bushing is detachably sleeved on the limiting pile, and a gap is left between the bushing and the long strip-shaped through hole.
[0009] Further, the limiting device further includes two reinforcing rings. The two reinforcing rings are respectively fixed on the limiting connection seats at both ends of the long strip-shaped through hole.
[0010] Further, the floating dock movable steel approach bridge with a limiting function further includes an arc-shaped plate. The arc-shaped plate is arranged at the first end of the approach bridge main body. One end of the arc-shaped plate is hinged to the approach bridge main body, and the other end of the arc-shaped plate is used for lapping on the platform, and the arc of the arc-shaped plate arches upward.
[0011] Further, the floating dock movable steel approach bridge with a limiting function further includes a step. The step is arranged at the second end of the approach bridge main body. One end of the step is hinged to the approach bridge main body, and a rolling wheel is installed at the end of the step far away from the approach bridge main body. The end of the step far away from the approach bridge main body is used for supporting on the floating dock through the rolling wheel.
[0012] Further, first fixing iron chains, first pull rings, second fixing iron chains and second pull rings are arranged at both ends of the approach bridge main body. The first pull ring is fixedly connected to the first end of the approach bridge main body. One end of the first fixing iron chain is buckled on the first pull ring, and the other end of the first fixing iron chain is used for tying to the platform. The second pull ring is fixedly connected to the second end of the approach bridge main body. One end of the second fixing iron chain is buckled on the second pull ring, and the other end of the second fixing iron chain is used for tying to the floating dock.
[0013] Applying the technical solution of the present utility model has the following beneficial effects:
[0014] The main body of the approach bridge is lapped on the pile cap through an arc-shaped support and on the floating pontoon through a roller support, thereby connecting the pile cap and the floating pontoon through the main body of the approach bridge to facilitate pedestrians to get on and off the floating pontoon. When the water level in the river rises or falls, the steel approach bridge swings upward or downward around the arc-shaped support, and the main body of the approach bridge drives the limit connection seat to swing upward or downward around the limit pile. When the water level in the river drops below the set water level, the main body of the approach bridge and the limit connection seat rotate downward until the inner wall of the long strip through hole on the limit connection seat abuts against the limit pile. At this time, the positions of the limit connection seat and the main body of the approach bridge are limited by the limit pile, and the limit connection seat and the main body of the approach bridge cannot continue to swing downward with the drop of the water level, thereby preventing the arc-shaped support from detaching from the pile cap due to the continuous drop of the water level of the main body of the approach bridge and preventing the main body of the approach bridge from falling into the water; during the flood period, the water level rises and the water flow fluctuates greatly. The limit connection seat is limited on the limit pile through the long strip through hole, so that the main body of the approach bridge cannot displace, thereby preventing the steel approach bridge from falling into the water.
[0015] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to Figures 1 - 10 for a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:
[0017] Figure 1 is a schematic diagram of the overall structure of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0018] Figure 2 is a working schematic diagram of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0019] Figure 3 is one of the partial enlarged schematic diagrams of the arc-shaped support end of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0020] Figure 4 is a sectional view of a limit device of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0021] Figure 5 is a dimensional relationship diagram of a limit device of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0022] Figure 6 is the other partial enlarged schematic diagram of the arc-shaped support end of a floating dock movable steel approach bridge with a limit function according to the present utility model;
[0023] Figure 7 It is one of the partial enlarged views of the roller support end of the movable steel approach bridge of a floating dock with a limit function according to the present utility model;
[0024] Figure 8 It is the second partial enlarged view of the roller support end of the movable steel approach bridge of a floating dock with a limit function according to the present utility model;
[0025] Figure 9 It is one of the overall schematic views of the limit device of the movable steel approach bridge of a floating dock with a limit function according to the present utility model;
[0026] Figure 10 It is the second overall schematic view of the limit device of the movable steel approach bridge of a floating dock with a limit function according to the present utility model.
[0027] Wherein, 1 is the approach bridge main body; 11 is the cross beam; 12 is the first fixed iron chain; 13 is the first pull ring; 14 is the second fixed iron chain; 15 is the second pull ring; 2 is the arc-shaped support; 3 is the roller support; 4 is the limit device; 41 is the limit pile; 42 is the limit connection seat; 421 is the long strip through hole; 422 is the reinforcing rib plate; 43 is the bushing; 44 is the stop pin; 45 is the reinforcing ring; 5 is the arc-shaped plate; 6 is the step; 61 is the rolling wheel; 7 is the bearing platform; 8 is the floating pontoon. Specific embodiments
[0028] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below, and preferred embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.
[0030] Embodiment:
[0031] See Figures 1 - 10The present embodiment provides a movable steel approach bridge for a floating dock with a limiting function, comprising an approach bridge body 1, an arc support 2 and a roller support 3, wherein the arc support 2 is arranged at the first end of the approach bridge body 1, and the roller support 3 is arranged at the second end of the approach bridge body 1. The approach bridge body 1 is swingably arranged around the central axis of the arc support 2, and further comprises a limiting device 4, wherein the limiting device 4 comprises a limiting pile 41 and a limiting connecting seat 42, wherein the limiting pile 41 is used for being fixedly connected to the pedestal 7, and the limiting connecting seat 42 is installed at the bottom of the first end of the approach bridge body 1, and the limiting connecting seat 42 is provided with an elongated through hole 421 arranged along the length direction of the approach bridge body 1, and the limiting connecting seat 42 is sleeved on the limiting pile 41 through the elongated through hole 421, and the swing angle of the approach bridge body 1 is limited by the hole wall surface of the elongated through hole 421 and the wall surface of the limiting pile 41.
[0032] Specifically, the arc surface of the arc support 2 faces downward and abuts against the pedestal 7, and the arc support 2 can rotate around its own central axis on the pedestal 7. It should be noted that in drought, the water level drops beyond the set value, which easily causes the arc support 2 to be displaced relative to the pedestal 7 and the roller support 3 to be displaced relative to the pontoon 8. In flood periods, the water flow fluctuates greatly, which also causes the arc support 2 to be displaced relative to the pedestal 7 and the roller support 3 to be displaced relative to the pontoon 8. The displacement of the arc support 2 relative to the pedestal 7 easily causes the bridge approach body 1 to fall from the pedestal 7, and the displacement of the roller support 3 relative to the pontoon 8 easily causes the bridge approach body 1 to fall from the pontoon 8. The steel bridge approach has a limit function. When the rotation angle exceeds the design angle, the entire bridge approach body 1 will be hung by the limit pile 41, and the bridge approach body 1 will not fall into the water.
[0033] It can be understood that the bridge approach body 1 is overlapped on the pedestal 7 through the arc support 2, and is overlapped on the pontoon 8 through the roller support 3, so that the pedestal 7 and the pontoon 8 are connected through the bridge approach body 1, which is convenient for pedestrians to get on and off the pontoon 8. When the water level in the river rises or falls, the steel pilot boat rotates up and down around the arc support 2. When the water level does not exceed the designed water level range, the limit connection seat 42 swings relative to the limit pile 41, and the limit connection seat 42 does not contact the limit pile 41 during the swinging process; as the water level continues to rise, the limit connection seat 42 and the limit pile 41 are not in contact; As the water level drops, the bridge approach body 1 and the limit connection seat 42 continue to swing downward around the central axis of the arc support 2 until the inner wall of the long strip through hole 421 on the limit connection seat 42 abuts against the limit pile 41. At this time, the position of the limit connection support and the bridge approach body 1 is limited by the limit pile 41, and the limit connection seat 42 and the bridge approach body 1 cannot continue to swing as the water level drops, thereby preventing the bridge approach body 1 from falling into the water due to the arc support 2 being separated from the pedestal 7 as the water level continues to drop. During floods, the water level rises and the water flow fluctuates greatly. The limit connection seat 42 is limited on the limit pile 41 through the long strip through hole 421, so that the bridge approach body 1 cannot be displaced, thereby preventing the steel bridge approach from falling into the water.
[0034] Furthermore, the dimensions of the limit pile 41 and the limit connection seat 42 satisfy the following conditions:
[0035]
[0036]
[0037] The length of the long through hole 421 on the limit connection seat 42 is a, the depth of the long through hole 421 is b, the diameter of the limit pile 41 is d, the maximum inclination angle set for the approach bridge main body 1 is α, and β is an auxiliary angle for the convenience of derivation and understanding. It should be noted that the maximum inclination angle of the approach bridge main body 1 within the actual working water level range is less than or equal to α. After combining the functions, we get:
[0038]
[0039] That is, when the downward deflection angle of the limit connection seat 42 reaches α, the inner wall of the long through hole 421 abuts against the outer wall of the bushing, thereby realizing the limitation of the limit support and the approach bridge main body.
[0040] Furthermore, a cross beam 11 is arranged at the first end of the approach bridge main body 1. The cross beam 11 is arranged on the approach bridge main body 1 along the width direction. The limit device 4 further includes a reinforcing rib plate 422. One side of the reinforcing rib plate 422 is fixedly connected to the limit connection seat 42, and the other side of the reinforcing rib plate 422 is fixedly connected to the cross beam 11. It can be understood that the limit connection seat 42 is connected to the approach bridge main body 1 through the cross beam 11, enhancing the connection rigidity between the limit connection seat 42 and the approach bridge main body 1. In addition, the reinforcing rib plate 422 is used to strengthen the connection between the cross beam 11 and the limit connection seat 42, improving the firmness between the cross beam 11 and the limit connection seat 42. In addition, a plurality of reinforcing rib plates 422 are arranged, and the plurality of reinforcing rib plates 422 also improve the rigidity of the limit connection seat 42 itself.
[0041] Furthermore, two arc-shaped supports 2 are arranged, and the two arc-shaped supports 2 are symmetrically arranged along the central axis of the approach bridge main body 1. The limit device 4 is located on the central axis of the approach bridge main body 1. It can be understood that when the approach bridge main body 1 is stressed, it is transmitted to the two arc-shaped supports 2 and the limit device 4. By arranging the limit device 4 on the central axis of the approach bridge main body 1, the stress of the approach bridge main body 1 is made uniform, preventing the approach bridge main body 1 from deflecting due to uneven stress.
[0042] Further, the limiting device 4 further includes a bushing 43. The bushing 43 is detachably sleeved on the limiting pile 41, and there is a gap between the bushing 43 and the long strip through hole 421. Specifically, the bushing 43 can be detachably connected by a stop pin 44. The stop pin 44 is arranged radially along the limiting pile 41, and the stop pin 44 is used for axially positioning the bushing 43. In other embodiments, the bushing 43 can also be detachably connected to the limiting pile 41 by means of threaded connection. Elastic pins can also be arranged radially along the limiting pile 41 in the limiting pile 41, limiting holes are correspondingly arranged in the bushing 43, and the bushing 43 is detachably connected by the cooperation of the elastic pins and the limiting holes. The bushing 43 is made of wear-resistant materials, such as tin bronze, aluminum bronze and other materials, which have high hardness and good wear resistance at the same time. The limiting pile 41 is protected by the bushing 43, and the service life of the limiting pile 41 is improved. In addition, the bushing 43 is detachably connected to the limiting pile 41. When the bushing 43 is damaged, the damaged bushing 43 can be removed and a new bushing 43 can be replaced without replacing the entire limiting pile 41, reducing the maintenance cost.
[0043] Further, the limiting device 4 further includes two reinforcing rings 45. The two reinforcing rings 45 are respectively fixed on the limiting connection seats 42 at both ends of the long strip through hole 421. Specifically, the reinforcing ring 45 is fixedly connected to the limiting connection seat 42 at both ends of the long strip through hole 421 by welding. The reinforcing ring 45 is made of high-strength steel. The strength and rigidity of the limiting connection seat 42 at the long strip through hole 421 are improved by the reinforcing ring 45, preventing the limiting connection seat 42 from undergoing large deformation during use and resulting in the failure to achieve the limiting function. It should be noted that the high-strength steel mentioned here refers to steel with a strength higher than or equal to 1000 MPa.
[0044] Furthermore, the floating dock movable steel approach bridge with a limiting function also includes an arc plate 5, which is arranged at the first end of the approach bridge body 1, one end of the arc plate 5 is hinged on the approach bridge body 1, and the other end of the arc plate 5 is used to overlap on the pedestal 7, and the arc of the arc plate 5 is arched upward. It can be understood that the approach bridge body 1 of the steel approach bridge will rotate with the up and down floating of the pontoon 8, so a certain gap needs to be left between the approach bridge body 1 and the pedestal 7 to prevent the approach bridge body 1 and the pedestal 7 from interfering when they rotate relative to each other, and the existence of this gap can easily cause pedestrians passing through the approach bridge body 1 to sprain their feet or fall into the gap, so there is a great safety hazard. By arranging the arc plate 5 at the end of the pedestal 7 of the approach bridge body 1, the arc plate 5 covers the gap, the gap is covered, and the safety of pedestrians is improved. Secondly, the curved cover plate arches upward, and when pedestrians step on the curved cover plate, the curved cover plate is deformed, making the curved cover plate tend to be flat. At this time, the end of the curved cover plate away from the approach bridge body 1 will not warp up; if the curved cover plate is made into a flat plate from the beginning, when pedestrians step on the flat plate, the flat plate will deform downward. The deformed flat plate will cause the end away from the approach bridge body 1 to warp upward, and the warped end poses a risk of injury.
[0045] Furthermore, the movable steel approach bridge of the floating dock with a limiting function also includes a step 6, which is arranged at the second end of the approach bridge body 1, one end of the step 6 is hinged on the approach bridge body 1, and the end of the step 6 away from the approach bridge body 1 is installed with a rolling wheel 61, and the end of the step 6 away from the approach bridge body 1 is used to support on the pontoon 8 through the rolling wheel 61. It can be understood that the pontoon 8 end of the approach bridge body 1 is supported by the roller support 3, which leads to a large drop between the approach bridge body 1 and the deck of the pontoon 8, that is, a high step is formed, which makes it inconvenient for pedestrians to pass. By arranging the step 6 at the end of the approach bridge body 1 close to the pontoon 8, and setting multiple steps through the step 6, the height of each step is reduced, which is conducive to pedestrian passage.
[0046] Furthermore, the two ends of the approach bridge main body 1 are respectively provided with a first fixed iron chain 12, a first pull ring 13, a second fixed iron chain 14 and a second pull ring 15. The first pull ring 13 is fixedly connected to the first end of the approach bridge main body 1. One end of the first fixed iron chain 12 is buckled on the first pull ring 13, and the other end of the first fixed iron chain 12 is used for tying to the bearing platform 7; the second pull ring 15 is fixedly connected to the second end of the approach bridge main body 1. One end of the second fixed iron chain 14 is buckled on the second pull ring 15, and the other end of the second fixed iron chain 14 is used for tying to the floating dock 8. Specifically, the first fixed iron chain 12 is arranged at an angle with the approach bridge main body 1, and the end of the first fixed iron chain 12 tied to the bearing platform 7 is arranged away from the approach bridge main body 1. There are two groups of the first pull ring 13 and the first fixed iron chain 12, and the two groups of the first pull ring 13 and the first fixed iron chain 12 are symmetrically arranged along the central axis of the approach bridge main body 1; the second fixed iron chain 14 is arranged at an angle with the approach bridge main body 1, and the end of the second fixed iron chain 14 tied to the bearing platform 7 is arranged away from the approach bridge main body 1. There are two groups of the second pull ring 15 and the second fixed iron chain 14, and the two groups of the second pull ring 15 and the second fixed iron chain 14 are symmetrically arranged along the central axis of the approach bridge main body 1. It can be understood that the approach bridge main body 1 and the bearing platform 7 are limited by the two groups of the first pull ring 13 and the first fixed iron chain 12 to prevent the approach bridge main body 1 from deflecting relative to the bearing platform 7, and secondly to prevent the approach bridge main body 1 from falling off the bearing platform 7; the approach bridge main body 1 and the floating dock 8 are limited by the second pull ring 15 and the second fixed iron chain 14 to prevent the approach bridge main body 1 from deflecting relative to the floating dock 8, and secondly to prevent the approach bridge main body 1 from detaching from the floating dock 8.
[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A floating dock movable steel approach bridge with a limiting function, comprising an approach bridge body (1), an arc-shaped support (2) and a roller support (3), wherein the arc-shaped support (2) is arranged at a first end of the approach bridge body (1), and the roller support (3) is arranged at a second end of the approach bridge body (1), and the approach bridge body (1) is swingably arranged around the central axis of the arc-shaped support (2), characterized in that: The invention also comprises a limiting device (4), wherein the limiting device (4) comprises a limiting pile (41) and a limiting connection seat (42), wherein the limiting pile (41) is used for being fixedly connected to the pedestal (7), and the limiting connection seat (42) is installed at the bottom of the first end of the approach bridge body (1), and the limiting connection seat (42) is provided with an elongated through hole (421) arranged along the length direction of the approach bridge body (1), and the limiting connection seat (42) is sleeved on the limiting pile (41) through the elongated through hole (421), and the wall surface of the hole of the elongated through hole (421) is abutted against the wall surface of the limiting pile (41), thereby limiting the swing angle of the approach bridge body (1).
2. The movable steel approach bridge of a floating dock with a limiting function according to claim 1 is characterized in that: A crossbeam (11) is arranged at the first end of the approach bridge body (1), and the crossbeam (11) is arranged on the approach bridge body (1) along the width direction. The limiting device (4) also includes a reinforcing rib (422), one side of the reinforcing rib (422) is fixedly connected to the limiting connection seat (42), and the other side of the reinforcing rib (422) is fixedly connected to the crossbeam (11).
3. The movable steel approach bridge of a floating dock with a limiting function according to claim 1 is characterized by: Two arc-shaped supports (2) are arranged, and the two arc-shaped supports (2) are symmetrically arranged along the central axis of the approach bridge body (1), and the limiting device (4) is located on the central axis of the approach bridge body (1).
4. A floating dock movable steel approach bridge with a limiting function according to any one of claims 1 to 3, characterized in that: The limiting device (4) further comprises a shaft sleeve (43), wherein the shaft sleeve (43) is detachably sleeved on the limiting pile (41), and a gap is left between the shaft sleeve (43) and the elongated through hole (421).
5. The movable steel approach bridge of a floating dock with a limiting function according to claim 4 is characterized in that: The limiting device (4) further comprises a reinforcing ring (45). Two reinforcing rings (45) are provided. The two reinforcing rings (45) are respectively fixed on the limiting connecting seats (42) at both ends of the long strip through hole (421).
6. The movable steel approach bridge of a floating dock with a limiting function according to claim 4 is characterized in that: The movable steel approach bridge of the floating dock with a limiting function also includes an arc-shaped plate (5), which is arranged at the first end of the approach bridge body (1), one end of the arc-shaped plate (5) is hinged on the approach bridge body (1), and the other end of the arc-shaped plate (5) is used to overlap on the pedestal (7), and the arc of the arc-shaped plate (5) is arched upward.
7. The movable steel approach bridge of a floating dock with a limiting function according to claim 4 is characterized by: The movable steel approach bridge of the floating dock with a limiting function also includes a step (6), which is arranged at the second end of the approach bridge body (1), one end of the step (6) is hinged to the approach bridge body (1), and a rolling wheel (61) is installed at the end of the step (6) away from the approach bridge body (1), and the end of the step (6) away from the approach bridge body (1) is used to be supported on a pontoon (8) through the rolling wheel (61).
8. The movable steel approach bridge of a floating dock with a limiting function according to claim 4 is characterized by: A first fixed iron chain (12), a first pull ring (13), a second fixed iron chain (14) and a second pull ring (15) are arranged at both ends of the approach bridge body (1); the first pull ring (13) is fixedly connected to the first end of the approach bridge body (1); one end of the first fixed iron chain (12) is buckled on the first pull ring (13); the other end of the first fixed iron chain (12) is used to be bolted to the pedestal (7); the second pull ring (15) is fixedly connected to the second end of the approach bridge body (1); one end of the second fixed iron chain (14) is buckled on the second pull ring (15); the other end of the second fixed iron chain (14) is used to be bolted to the pontoon (8).