Ship lock access door groove protection device

Abstract

The ship lock access door groove protection device comprises steel plates, protection plates and magnets, the steel plates are arranged on the front face of the inner side of a ship lock access door groove in an up-down mode, and a plurality of anchor bars are welded to the rear side of the steel plates. The protection plates are arranged on the front side of the steel plate, the tops of the rear sides of the protection plates are provided with protruding T-shaped male tenons, the bottoms of the rear sides of the protection plates are provided with concave T-shaped female tenons, the male tenons and the female tenons of every two adjacent protection plates are connected in a clamped mode to form a whole, and two trapezoidal grooves are formed in the rear sides of the protection plates. The shape of the magnet is matched with that of the groove of the protection plate, the magnet is inserted into the groove of the protection plate, and the protection plate is attracted to the front face of the steel plate through the magnet. When the device is used, the impact force of a ship on the protection plate can be divided into arc tangential force and radial force, the tangential force can adjust the advancing direction of the ship and reduce the impact duration so as to reduce the damage degree of the protection plate, the radial force can be decomposed into force perpendicular to the front face and the side face of the access door groove, surface contact is achieved, and contact stress is reduced; therefore, the strength of the protection plate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of protection for the overhaul gate slots of ship locks, and specifically provides a protection device for the overhaul gate slots of ship locks. Background Art

[0002] With the development of the global economy and interconnection, the shipping industry has developed vigorously. In order to reduce transportation costs, ships have gradually become larger, and the waterway grades have been gradually improved. As the throat of the waterway, the size of the ship lock is relatively small compared to the waterway, with high requirements for the operation of the crew. Moreover, the construction of the ship lock lags behind the waterway, and there are many cases where ships pass through the lock beyond the standard, which greatly increases the probability and intensity of ships colliding with the lock wall, posing higher requirements for the anti-ship-collision ability of the concrete structure of the lock wall.

[0003] Currently, the vast majority of ship locks use laminated flat gates as overhaul gates. When the ship lock needs to be pumped dry for maintenance, the laminated gate panels are horizontally inserted one by one into the overhaul gate slots arranged on the lock wall of the ship lock to form a water retaining structure, and then the water in the lock chamber is pumped dry for maintenance; this kind of overhaul gate has a simple structure and is produced in a standardized way, and a set can be shared by multiple ship locks, without the need for large-scale lifting equipment, with low construction and use costs, good stress, and reliable water retaining; since the outlet of the overhaul gate slot is an external corner, when a ship passes by, it is easily damaged by the collision of the ship. Although angle steel corner guards are commonly used at present, there is still a phenomenon that the angle steel is collided and curled, posing a great hidden danger to the safety of ships passing through the lock; therefore, a new idea needs to be adopted for the protection of the overhaul gate slots of the ship lock, and a more reliable method should be used for protection. The overhaul gate itself plays a role in retaining water during the repair of the ship lock. Once the overhaul gate slot is damaged, the ship lock cannot be pumped dry for repair. Moreover, the overhaul gate is the outermost water retaining structure on both sides of the ship lock. If the overhaul gate slot is damaged, there will be no ready-made water retaining structure to repair the overhaul gate slot, and it is necessary to use a cofferdam to cut off navigation for repair, which affects the operation of the ship lock. Therefore, the protection device for the overhaul gate slot needs to meet the requirements for installation and removal under water conditions. Summary of the Invention

[0004] The purpose of the present invention is to provide a protection device for the overhaul gate slots of ship locks to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A protective device for the overhaul gate slot of a ship lock, comprising a steel plate, a protective plate, and a magnet. The steel plate is arranged on the inner front side of the overhaul gate slot of the ship lock, and is arranged vertically. A number of anchor bars are welded on the rear side. The protective plate is arranged on the front side of the steel plate. A protruding T-shaped male tenon is provided at the top of its rear side, and a recessed T-shaped female tenon is provided at the bottom of its rear side. The female and male tenons of adjacent two protective plates are snap-connected to form a whole. Two trapezoidal grooves are provided on the rear side of the protective plate. The shape of the magnet fits the shape of the groove of the protective plate, and is inserted into the groove of the protective plate. The protective plate is adsorbed on the front side of the steel plate through the magnet. As a further scheme of the present invention, a number of anchor bars welded on the rear side of the steel plate are linearly arranged in 2-3 columns from top to bottom in sequence according to the width of the steel plate and are symmetrically arranged, and hooks and anchor bar crossbars are provided at the rear ends of the anchor bars, and the vertical spacing is determined according to the friction force of the largest ship passing through the lock.

[0006] As a further scheme of the present invention, the front side of the inner side of the overhaul gate slot is a plane, and the side is a plane perpendicular to the front side. The inner front side of the overhaul gate slot is coated with an organic coupling agent and pasted with the steel plate. The steel plate is subjected to galvanized anti-corrosion treatment before installation.

[0007] As a further scheme of the present invention, there is a 10-mm horizontal expansion joint at the adjacent positions of the upper and lower steel plates, and a 2-mm 45° chamfer is provided at the horizontal expansion joint of the steel plate.

[0008] As a further scheme of the present invention, the protective plate is made of ultra-high molecular weight polyethylene material. The protective plate is strip-shaped, and the standard length is 1 m. The protective plate at the bottom of the overhaul gate slot can be appropriately lengthened or shortened according to the specific height of the overhaul gate slot of the ship lock. The top elevation of the protective plate is the same as the top elevation of the overhaul gate slot.

[0009] As a further scheme of the present invention, the grooves are symmetrically arranged up and down on the back side of the protective plate.

[0010] As a further scheme of the present invention, the male and female tenons of the protective plate do not penetrate the thickness direction of the protective plate, and enough wear thickness is left. The specific dimensions of the female and male tenons are determined by the shear force formed by the maximum friction force of the ship passing through the lock on the protective plate.

[0011] As a further scheme of the present invention, the material of the magnet is neodymium magnet, and the shape is trapezoidal thin sheet type. The specific dimensions and thickness are determined by the requirement of the horizontal shear force formed by the maximum friction force of the ship passing through the lock on the magnetic suction force between the steel plates. The slope of the edge of the magnet and the groove is 45°. The magnet is subjected to epoxy resin anti-corrosion treatment before installation.

[0012] The width of the steel plate is the same as the width of the back of the protective plate, and the length of the steel plate is 10 mm less than the length of the protective plate for the horizontal expansion joint width. There are 5 mm vertical expansion joints on both sides of the inspection door groove for the steel plate, and the protective plate together with the trapezoidal magnet can slide up and down on the steel plate in the inspection door groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the present invention is in use, the surface of the protective plate is arc-shaped, and both sides are flush with the inspection door groove. When being collided by a ship, since the middle of the protective plate arches up and the ship impacts the lock wall in a surface contact manner, the impact point will not occur at the joint position of the inspection door groove and the protective plate, which can avoid damage to the corners of the inspection door groove and the protective plate. At the same time, the impact force of the ship can be divided into the tangential force and the radial force of the arc. The tangential force can adjust the traveling direction of the ship, reduce the impact duration, and thus reduce the damage degree of the protective plate; the radial force can be decomposed into the vertical direction perpendicular to the front lock wall of the inspection door groove and the vertical direction perpendicular to the side lock wall of the inspection door groove. Both of these two directions are surface contacts, which can reduce the contact stress and increase the strength of the protective plate.

[0014] 2. When the present invention is in use, the protective plate is strip-shaped with a standard length of 1000 mm, which is convenient for installation and removal. No lifting equipment is required, and it can be installed and removed only by manpower using simple tools. The protective plate is made of ultra-high molecular weight polyethylene material, which has the characteristics of strong impact resistance, small friction coefficient, light weight, wear resistance, corrosion resistance, anti-ultraviolet, and aging resistance. Among them, the strong impact resistance ensures the strength of the protective plate under the action of the radial component force of the ship impact force; the small friction coefficient reduces the friction force generated by the radial component force of the ship impact force. Since there are speed limit requirements for ships in the lock, the generated impact belongs to high-quality and low-speed impact, with a long contact time and a small friction force, which can greatly reduce the damage to each other between the ship and the lock wall; the light weight is convenient for the installation and removal of the protective plate; since the working environment of the protective plate is outdoor strong ultraviolet, alternating above and below water, certain water pollution, and high-frequency wear of ships, etc., the durability requirements for the protective plate are high. The characteristics of wear resistance, corrosion resistance, anti-ultraviolet, and aging resistance improve the service life of the protective plate, can reduce the replacement frequency of the protective plate, and make it more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the overall exploded view of the present invention; Figure 3 is the overall exploded view of the present invention from another perspective; Figure 4 is of the present invention Figure 2 enlarged view of part A.

[0016] In the figure: 1. Maintenance gate slot; 2. Steel plate; 3. Anchor bar; 4. Magnet; 5. Protection plate; 6. Male tenon; 7. Trapezoidal groove; 8. Hook; 9. Female tenon; 10. Chamfer; 11. Horizontal expansion joint; 12. Vertical expansion joint. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention.

[0018] In the present invention, the term "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present invention is not necessarily to be construed as more preferred or more advantageous than other embodiments. In order for any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0019] Embodiment Please refer to Figures 1 to 4 , in the embodiment of the present invention, a protection device for a lock maintenance gate slot is characterized by comprising a steel plate 2, a protection plate 5, and a magnet 4. The steel plate 2 is arranged on the inner front side of the lock maintenance gate slot 1 and is arranged vertically. A number of anchor bars are welded on the rear side. The protection plate 5 is arranged on the front side of the steel plate 2. A protruding T-shaped male tenon 6 is provided at the top of the rear side, and a recessed T-shaped female tenon 9 is provided at the bottom of the rear side. The female tenons 9 and male tenons 6 of two adjacent protection plates 5 are engaged with each other to form a whole. Two trapezoidal grooves 7 are provided on the rear side of the protection plate 5. The magnet 4 is in line with the shape of the groove 7 of the protection plate 5 and is inserted into the groove 7 of the protection plate 5. The protection plate 5 is adsorbed on the front side of the steel plate 2 through the magnet 4.

[0020] A number of anchor bars 3 welded on the rear side of the steel plate 2 are linearly arranged in 2-3 columns from top to bottom in sequence according to the width of the steel plate 2 and are symmetrically arranged. Hooks 8 and anchor bar crossbars are provided at the rear ends of the anchor bars 3, and their vertical spacing is determined according to the friction force of the largest ship passing through the lock.

[0021] The front side of the inner side of the maintenance gate slot 1 is a flat surface, and the side surface is a flat surface perpendicular to the water-facing side plane of the lock wall. The front side of the inner side of the maintenance gate slot 1 is coated with an organic coupling agent and pasted with a steel plate 2. The steel plate 2 has been treated with galvanized anti-corrosion before installation.

[0022] There is a 10-mm horizontal expansion joint 11 at the adjacent upper and lower positions of the steel plate 2. The steel plate 2 is provided with a 2-mm 45° chamfer 10 at the horizontal expansion joint 11.

[0023] The protective plate 5 is made of ultra-high molecular weight polyethylene material. The protective plate 5 is strip-shaped, and the standard length is 1 m. The protective plate 5 at the bottom of the maintenance gate slot 1 can be appropriately lengthened or shortened according to the specific height of the lock maintenance gate slot 1. The top elevation of the protective plate 5 is the same as the top elevation of the maintenance gate slot 1.

[0024] The grooves are symmetrically arranged up and down on the back of the protective plate 5.

[0025] The male tenon 6 and the female tenon 9 of the protective plate 5 do not penetrate through the thickness direction of the protective plate 5, leaving enough wear thickness. The specific dimensions of the female tenon 9 and the male tenon 6 are determined by the shear force formed by the maximum friction force of the passing ships on the protective plate 5. The outer opening of the groove on the back of the protective plate 5 is small and the inner opening is large, and a magnet 4 of the same size can be clamped in. The protective plate 5 can slide slightly in the horizontal direction in the maintenance gate slot 1.

[0026] The material of the magnet 4 is neodymium magnet, and the shape is trapezoidal thin sheet type. The specific dimensions and thickness are determined by the requirements of the horizontal shear force formed by the maximum friction force of the passing ships on the magnetic suction force between the steel plate 2. The slope of the edge of the magnet 4 and the groove is 45°. The magnet 4 has been treated with epoxy resin anti-corrosion before installation.

[0027] The width of the steel plate 2 is the same as the width of the back of the protective plate 5, and the length of the steel plate 2 is 10 mm less than the width of the horizontal expansion joint 11 of the length of the protective plate 5. The steel plate 2 has a 5-mm vertical expansion joint 12 on each side of the maintenance gate slot 1. The protective plate 5 together with the trapezoidal magnet 4 can slide up and down on the steel plate 2 in the maintenance gate slot 1 for the installation and removal of the protective plate 5. The installation and removal of the protective plate 5 are carried out one by one from top to bottom. It can only be pulled up and down, and cannot be forced outward, nor can it be removed from the middle. The installation and removal of the protective plate 5 do not require pumping dry water and dry ground construction. During installation, it is hammered into the maintenance gate slot 1 sequentially downward with a rubber hammer. During removal, it is directly pulled out from the top sequentially from the maintenance gate slot 1.

[0028] The working principle of the present invention is as follows: The surface of the protective plate 5 is arc-shaped and flush with the maintenance door groove 1 on both sides. When the ship collides, since the middle of the protective plate 5 arches up and the ship impacts the lock wall in a surface contact manner, the impact point will not occur at the joint position between the maintenance door groove 1 and the protective plate 5, which can avoid damage to the corners of the maintenance door groove 1 and the protective plate 5. At the same time, the impact force of the ship can be divided into the tangential force and the radial force of the arc. The tangential force can adjust the traveling direction of the ship, reduce the impact duration, and thus reduce the damage degree of the protective plate 5; the radial force can be decomposed into the vertical lock wall in front of the maintenance door groove 1 and the vertical lock wall on the side of the maintenance door groove 1. Both of these directions are surface contacts, which can reduce the contact stress and increase the strength of the protective plate 5.

[0029] When the present invention is in use, the protective plate 5 is strip-shaped with a standard length of 1000 mm, which is convenient for installation and removal without the need for lifting equipment. As long as manpower and simple tools are used, the installation and removal can be completed. The protective plate 5 is made of ultra-high molecular weight polyethylene material, which has the characteristics of strong impact resistance, small friction coefficient, light weight, wear resistance, corrosion resistance, anti-ultraviolet, and aging resistance. Among them, the strong impact resistance ensures the strength of the protective plate 5 under the action of the radial component force of the ship impact force; the small friction coefficient reduces the friction force generated by the radial component force of the ship impact force. Since there are speed limit requirements for ships in the lock, the generated impact belongs to high-quality and low-speed impact with a long contact time and small friction force, which can greatly reduce the damage to each other between the ship and the lock wall; the light weight facilitates the installation and removal of the protective plate 5; since the working environment of the protective plate 5 is outdoor with strong ultraviolet rays, alternating above and below water, certain water pollution, and high-frequency wear of ships, the durability requirements for the protective plate 5 are high. The characteristics of wear resistance, corrosion resistance, anti-ultraviolet, and aging resistance improve the service life of the protective plate 5, can reduce the replacement frequency of the protective plate 5, and make it more economical.

[0030] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A ship lock inspection door slot protection device, characterized in that: The invention comprises a steel plate (2), a protective plate (5), and a magnet (4). The steel plate (2) is arranged on the front side of the inner side of the ship lock inspection door slot (1) and is arranged up and down, and a plurality of anchor bars are welded on the rear side. The protective plate (5) is arranged on the front side of the steel plate (2), and a protruding T-shaped male tenon (6) is provided on the top of the rear side, and a recessed T-shaped female tenon (9) is provided on the bottom of the rear side. The female tenons (9) and male tenons (6) of two adjacent protective plates (5) are mutually engaged and connected to form a whole, and two trapezoidal grooves (7) are provided on the rear side of the protective plate (5). The magnet (4) matches the shape of the groove (7) of the protective plate (5) and is inserted into the groove (7) of the protective plate (5). The protective plate (5) is adsorbed on the front side of the steel plate (2) through the magnet (4).

2. A ship lock maintenance door slot protection device according to claim 1, characterized in that: A plurality of anchor bars (3) welded to the rear side of the steel plate (2) are linearly arranged in 2-3 rows from top to bottom according to the width of the steel plate (2) and are arranged symmetrically, and the rear ends of the anchor bars (3) are provided with hooks (8) and anchor bar crossbars, and the vertical spacing between them is determined according to the friction force of the largest ship passing through the lock.

3. A ship lock maintenance door slot protection device according to claim 1, characterized in that: The front side of the inner side of the inspection door slot (1) is a plane, and the side side is a plane perpendicular to the front side. The front side of the inner side of the inspection door slot (1) is coated with an organic coupling agent and adhered to the steel plate (2). The steel plate (2) is galvanized for corrosion protection before installation.

4. A ship lock maintenance door slot protection device according to claim 3, characterized in that: A 10 mm horizontal expansion joint (11) is provided at adjacent upper and lower portions of the steel plate (2), and a 2 mm 45° chamfer (10) is provided at the horizontal expansion joint (11) of the steel plate (2).

5. A ship lock maintenance door slot protection device according to claim 1, characterized in that: The protective plate (5) is made of ultra-high molecular weight polyethylene material. The protective plate (5) is in the shape of a long strip with a standard length of 1 m. The protective plate (5) at the bottom of the inspection gate slot (1) can be appropriately lengthened or shortened according to the specific height of the ship lock inspection gate slot (1). The top elevation of the protective plate (5) is the same as the top elevation of the inspection gate slot (1).

6. A ship lock maintenance door slot protection device according to claim 5, characterized in that: The male tenon (6) and the female tenon (9) of the protective plate (5) should not penetrate the protective plate (5) in the thickness direction, leaving a sufficient thickness for wear. The specific sizes of the female tenon (9) and the male tenon (6) are determined by the shear force generated on the protective plate (5) by the maximum friction force of the ship passing through the lock. The outer opening of the groove on the back of the protective plate (5) is small and the inner opening is large, so that a magnet (4) of the same size can be inserted. The protective plate (5) can slide slightly in the horizontal direction in the inspection door slot (1).

7. A ship lock maintenance door slot protection device according to claim 6, characterized in that: The magnet (4) is made of neodymium magnet and is in the shape of a trapezoidal thin sheet. The specific size and thickness are determined by the requirements of the magnetic attraction force between the horizontal shear force formed by the maximum friction force of the ship passing through the lock and the steel plate (2). The slope of the edge of the magnet (4) and the groove is 45 degrees. The magnet (4) is treated with epoxy resin for corrosion protection before installation.

8. A ship lock maintenance door slot protection device according to claim 7, characterized in that: The width of the steel plate (2) is consistent with the width of the back of the protective plate (5), and the length of the steel plate (2) is 10 mm less than the length of the protective plate (5) in terms of the width of the horizontal expansion joint (11). The steel plate (2) has vertical expansion joints (12) of 5 mm on both sides of the inspection door slot (1).

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