A dock gate for a longitudinal launching slipway

Abstract

The application relates to the field of shipbuilding and hydraulic engineering, and discloses a dock gate of a longitudinal launching shipway, which comprises a slide body, a dock gate body arranged on the slide body, and a dock gate mechanism arranged on the slide body, wherein the dock gate mechanism comprises a watertight assembly, an inner-extending high-web oblique stiffening assembly, a slide rail compensation assembly and a water pumping assembly. The dock gate body, the vertical T-shaped profile and the knee plate are arranged, the height of the web of the inner vertical T-shaped profile is higher than that of the bottom plate, the lower end of the vertical T-shaped profile is obliquely cut and is in the same height as the inner bottom plate, the height of the web of the horizontal T-shaped profile is higher than that of the side plate, the two ends of the horizontal T-shaped profile are obliquely cut and are in the same height as the inner side plate, the width of the dock sill can be reduced correspondingly under the condition that the bottom plate and the side plate are kept in a small size, the occupation of the dock sill to the shipway area and the construction amount are reduced, the cross section modulus of the dock gate can be increased greatly under the condition that the heights of the webs of the inner vertical T-shaped profile and the horizontal T-shaped profile are higher than those of the inner bottom plate and the inner side plate, and the bending resistance of the dock gate is improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding hydraulic engineering facilities technology, specifically to a dock gate for a longitudinally launched slipway. Background Technology

[0002] A longitudinal launching slipway is a sloping hydraulic structure that combines shipbuilding and launching functions. It is typically constructed using reinforced concrete as a single unit, with two parallel longitudinal ramps laid on the platform. The slipway slopes towards the water, usually between 1 / 14 and 1 / 24. After construction, the ship slides into the water under its own weight. The ramp surface is lubricated with grease to reduce friction. This type of slipway is simple in structure and moderately costly, making it a widely adopted shipbuilding and launching solution in large and medium-sized shipyards both domestically and internationally.

[0003] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that, in order to alleviate the stern falling phenomenon and reduce the risk of bow falling during the launching process of ships, it is usually necessary to extend the lower end of the slipway into the water with a sufficient length. For slipways in coastal areas, the tidal range formed by the ebb and flow of tides can reach 2 to 6 meters. Calculated with a typical slope of 1 / 20, the slipway area at high tide will be submerged by seawater by 40 to 120 meters more than at low tide. In order to avoid the ships being submerged by the tide during the construction period and to ensure the continuous progress of construction operations, the traditional approach is to arrange the ship construction positions at a higher position on the shore, thereby lengthening the slipway as a whole. However, this method will occupy a large amount of shoreline land resources and significantly increase the construction and operation costs of the slipway. Summary of the Invention

[0004] This invention provides a dock gate for a longitudinally launching slipway, solving the problem that the traditional approach of arranging shipbuilding berths higher on the shore, thus lengthening the slipway overall, significantly occupies shoreline land and increases the construction and operation costs of the slipway. This invention avoids interfering with ship construction while not hindering the ship's descent during launching, effectively saving valuable slipway land and reducing slipway construction costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dock gate for a longitudinally launched slipway, comprising a slipway body, a dock gate body mounted on the slipway body, and a dock gate mechanism mounted on the slipway body. The dock gate structure includes a watertight component, an inwardly extending high-webbed inclined stiffening component, a slide rail compensation component, and a pumping component. Watertight components are installed at the bottom and both sides of the dock gate body; An inward-extending high-web plate beveling stiffening assembly is installed inside the main body of the dock gate. The inward-extending high-web plate beveling stiffening assembly includes a vertical T-shaped profile, which is installed inside the main body of the dock gate. An elbow plate is installed on one side of the lower surface of the top of the main body of the dock gate. A slide rail compensation component is disposed on the slide rail body. The slide rail compensation component includes a platform surface, which is disposed at the bottom of the slide rail body. A slide rail notch is provided on the slide rail body. A slide rail insert is engaged on the inner side of the slide rail notch. A slide rail surface is provided on the surface of the slide rail body. The pumping assembly is located on the inside of the dock gate body.

[0006] By adopting the above technical solution, through the structure of the dock gate body, vertical T-shaped members, and elbow plates, the internal vertical T-shaped members have a web height higher than the bottom plate, and the lower ends of the vertical T-shaped members are beveled to the same height as the inside of the bottom plate. The horizontal T-shaped members have a web height higher than the side plates, and both ends of the horizontal T-shaped members are beveled to the same height as the inside of the side plates. While maintaining a smaller bottom plate and side plates, the width of the dock sill can be reduced accordingly, thus reducing the dock sill's footprint on the slipway and the amount of construction work. At the same time, the internal vertical T-shaped members and horizontal T-shaped members have web heights higher than the bottom plate and side plates, respectively, which can further increase the section modulus of the dock gate and improve its bending resistance.

[0007] Preferably, the watertight component includes a retaining wall, which is disposed at the bottom and both ends of the dock gate body. An ear plate is connected to the bottom inclined surface of the dock gate body, and a spiral buckle is connected to the other side of the ear plate. A guide block is disposed at the bottom of the dock gate body, and a guide base is connected to the bottom of the guide block. A water-stop rubber is connected to one side of the bottom of the dock gate body, and a steel plate is disposed between the water-stop rubber and the retaining wall.

[0008] Preferably, the upper surface of the slide body is provided with a slide plate, the top of the slide plate is provided with a wooden pad, and the top of the wooden pad is connected to a crossbeam.

[0009] Preferably, the pumping assembly includes a seamless steel pipe, which is disposed in the inner cavity of the dock gate body. One end of the seamless steel pipe is provided with a raised panel type flat welding flange, and an angle steel is provided on one side of the end of the seamless steel pipe. A nut is provided on the angle steel. A clamp is sleeved on the outer side of one end of the seamless steel pipe, and a long elbow is connected to the other end of the seamless steel pipe. The other end of the long elbow is connected to a hull passage sleeve.

[0010] Preferably, the side plate and bottom plate of the dock gate body are integrally formed to form a water-stop groove whose size is adapted to the size of the water-stop rubber, and the water-stop rubber is in the shape of "K".

[0011] Preferably, one end of the spiral buckle is connected to the end of the dock gate body through an ear plate, and the other end of the spiral buckle is connected to one end of the retaining wall through an ear plate.

[0012] Preferably, the water-stopping rubber is made of neoprene rubber with a new rubber content of not less than 60%. The corner joints of the vertical side water-stopping rubber and the horizontal bottom water-stopping rubber are bonded with a 45° bevel to form a closed-loop continuous sealing structure.

[0013] Preferably, the vertical T-shaped profile is arranged vertically along the main body of the dock gate, the height of the web of the vertical T-shaped profile extends along the front-rear direction of the main body of the dock gate and is greater than the front-rear width of the bottom plate of the main body of the dock gate, and the web protrudes into the internal cavity.

[0014] Preferably, the outer diameter of the slide rail insert is adapted to the inner diameter of the slide rail notch, and the slide rail insert is symmetrically arranged along the vertical center line of the slide rail body.

[0015] This invention provides a dock gate for a longitudinally launched slipway. It has the following beneficial effects: 1. This invention, through the design of the dock gate body, vertical T-shaped profiles, and elbow plates, etc., has a vertical T-shaped profile web height higher than the bottom plate, and the lower end of the vertical T-shaped profile is beveled to the same height as the bottom plate. The horizontal T-shaped profile web height is higher than the side plates, and the two ends of the horizontal T-shaped profile are beveled to the same height as the side plates. While maintaining a smaller bottom plate and side plates, the width of the dock sill can be reduced accordingly, thus reducing the dock sill's footprint on the slipway and the amount of construction work. At the same time, the height of the webs of the vertical and horizontal T-shaped profiles is higher than the bottom plate and the side plates, respectively, which can further increase the cross-sectional module of the dock gate and improve its bending resistance.

[0016] 2. In this invention, at the dock gate location in the middle section of the slipway, a dock sill and retaining walls need to be installed below the slipway surface and on both sides. At the same time, a slipway gap of a certain length needs to be excavated, with a length approximately 0.2m longer than the lower end of the dock gate, to facilitate the insertion of the dock gate. The cross-section of the slipway gap is vertical. Two symmetrical steel slipway inserts are also fabricated. When the ship needs to be launched, the dock gate is lifted away, and the slipway inserts are lifted into the slipway gap to complete the continuity of the slipway. After the ship is launched, the slipway inserts need to be lifted away, and the dock gate is inserted into the gap to protect the upper part of the slipway from the influence of tides, allowing for the continued construction of new ships. This invention offers greater overall flexibility.

[0017] 3. This invention involves installing a fixed pipe near the retaining wall of the dock gate. The lower half of the pipe is vertically arranged inside the dock gate, and a flange is installed at the lower end of the pipe to facilitate the connection of a hose and a submersible pump to suck up the water accumulated in the dock. The pipe is connected to the vertical pipe on the outside through an elbow and a section of straight pipe. An elbow is connected to the upper end of the pipe so that the pumped water can be sprayed to the outside of the dock gate. The upper end of the elbow is higher than the dock gate to ensure that the tide outside the dock will not flow back in through the pipe.

[0018] 4. The dock gate is equipped with guide blocks and guide bases, which form a certain angle. The main body of the dock gate slides inward along the guide structure panel by its own weight, thereby generating a natural inward squeezing force to press the water-stop rubber tightly, thus achieving a watertight effect. At the same time, a tensioning device is also provided to further ensure the reliability of the water stop. In terms of the arrangement of the water-stop rubber, continuous water-stop rubber grooves are provided on both sides and the bottom of the inner side of the dock gate. The top of each rubber groove is located on the same plane. The outer side of the rubber groove is composed of the side plate and bottom plate of the dock gate, while the inner side is made of thick flat iron. The cross-section of the water-stop rubber is "K" shaped. During installation, its top is 25 mm higher than the rubber groove. The water-stop rubber is bonded to the groove with a two-component neoprene rubber adhesive. Before bonding, the steel plate surface must be thoroughly derusted and polished. The neoprene rubber surface must also be polished to remove the oxide layer and cleaned to ensure that there is no oil or other contamination. To ensure that the bonding is flat and firm, tools such as U-shaped clamps should be used to assist in ensuring that there is no delamination at the joint and that the rubber strip does not bulge obviously. After opening and closing the dock gate, it is necessary to check that the rubber strip has not fallen off. When the dock gate is squeezed inward, the top rubber is squeezed into the triangular groove, and finally the rubber groove structure holds the dock gate, thereby avoiding the rubber from plastic deformation due to excessive compression. The rubber maintains effective water tightness in the elastic deformation state, ensuring long-lasting and reliable sealing performance. Attached Figure Description

[0019] Figure 1 This is a top view of the present invention; Figure 2 This is a schematic diagram showing the connection between the dock gate body and the retaining wall of the present invention; Figure 3 This is a front view schematic diagram of the main body of the dock gate of the present invention; Figure 4 This is a front view schematic diagram of the slide body of the present invention; Figure 5 This is a three-dimensional schematic diagram of the slide body of the present invention; Figure 6 This is a schematic diagram of the interior of the dock gate body of the present invention; Figure 7 This is a side view of the main body of the dock gate of the present invention; Figure 8 This is a top view of the main body of the dock gate of the present invention.

[0020] The components include: 1. Slipway body; 2. Dock gate body; 3. Retaining wall; 4. Ear plate; 5. Spiral buckle; 6. Guide block; 7. Guide base; 8. Water-stop rubber; 9. Steel plate; 10. Vertical T-profile; 11. Elbow plate; 12. Slide plate; 13. Wooden pad; 14. Crossbeam; 15. Slipway surface; 16. Slipway notch; 17. Slipway insert; 18. Slipway surface; 19. Seamless steel pipe; 20. Raised panel type flat welding flange; 21. Angle steel; 22. Nut; 23. Pipe clamp; 24. Long elbow; 25. Through-hull sleeve. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a dock gate for a longitudinally launched slipway, comprising a slipway body 1, a dock gate body 2 mounted on the slipway body 1, and a dock gate mechanism mounted on the slipway body 1. The dock gate structure includes a watertight assembly, an inwardly extending high-web plate inclined stiffening assembly, a slide rail compensation assembly, and a pumping assembly; Watertight components are installed at the bottom and both sides of the main body 2 of the dock gate; An internally extending high web plate beveling stiffening assembly is installed inside the dock gate body 2. The internally extending high web plate beveling stiffening assembly includes a vertical T-shaped profile 10. The vertical T-shaped profile 10 is installed inside the dock gate body 2. An elbow plate 11 is installed on one side of the lower surface of the top of the dock gate body 2. A slide rail compensation component is provided on the slide rail body 1. The slide rail compensation component includes a platform 15, which is located at the bottom of the slide rail body 1. A slide rail notch 16 is provided on the slide rail body 1. A slide rail insert 17 is engaged on the inner side of the slide rail notch 16. A slide rail surface 18 is provided on the surface of the slide rail body 1. The pumping assembly is located on the inside of the dock gate body 2.

[0023] Specifically, in use, the slipway surface 18 on the slipway body 1 provides continuous sliding support for ship construction and launching. The platform surface 15 constitutes the basic load-bearing structure of the slipway body 1. A slipway notch 16 is opened at a preset position on the slipway body 1 as a dedicated installation position for the dock gate body 2. The system achieves rapid switching between water-blocking construction and ship launching without disrupting the overall layout of the slipway body 1 by replacing components such as "the dock gate body 2 is positioned to block water and the slipway insert 17 is positioned to open the slipway". To ensure the continuity of construction protection and launching operations during the tidal period, the watertight components are arranged on one side of the bottom of the dock gate body 2. When the dock gate body 2 is installed into the slipway gap 16, the watertight components are tightly fitted to the bottom and side surfaces of the slipway gap 16 and the corresponding parts of the slipway surface 15, forming a closed water-stop barrier at the interface between the dock gate body 2 and the slipway body 1. This prevents the outer tide water from seeping into the upstream construction area of ​​the slipway along the slipway surface 18, maintaining dry working conditions in the dock area and avoiding the impact of rising tide levels on ship construction operations. In the water-blocking condition, the dock gate body 2 is seated within the slipway gap 16, and the slipway surface 18 is interrupted at this point by the dock gate body 2. The dock gate body 2 and its supporting watertight structure achieve the water-blocking function, ensuring that the upstream slipway construction area is not affected by tides. In the launching condition, the dock gate body 2 is lifted away from the slipway gap 16, and the slipway insert 17 is engaged and embedded into the inner side of the slipway gap 16, precisely filling the broken area of ​​the slipway, restoring the slipway surface 18 to a continuous and smooth state, providing a continuous sliding support surface for the ship's launching, and ensuring that the ship slides smoothly down the slipway body 16. After the launching operation is completed, the slipway insert 17 is lifted away from the slipway gap 16. By replacing part 17 and resetting the dock gate body 2, the water-blocking function can be quickly restored, and the next round of shipbuilding cycle can begin. The pumping unit is located on the inside of the dock gate body 2. It can actively pump out the seepage water, rainwater and construction wastewater accumulated in the inner area of ​​the dock gate and discharge the accumulated water to the water area outside the dock gate, so as to avoid the water accumulation in the dock affecting the shipbuilding operation and equipment storage. At the same time, the drainage outlet of the pumping unit is higher than the top elevation of the dock gate body 2, and the water level difference forms a natural anti-backflow barrier to prevent the tide water at the outer high tide level from flowing back into the dock through the drainage channel, and continuously maintain a dry working environment in the shipyard construction area. Among them, the inwardly extending high-web inclined stiffening assembly serves as the internal load-bearing reinforcement structure of the dock gate body 2. With the vertical T-profile 10 as the core load-bearing component, it is arranged vertically along the interior of the dock gate body 2. Together with the top elbow plate 11, it enhances the structural rigidity of the dock gate. The web of the vertical T-profile 10 protrudes into the internal cavity of the dock gate body 2, and its web height exceeds the width limit of the bottom plate of the dock gate body 2. Without increasing the outer contour dimensions of the dock gate or additionally occupying the width of the slide gap 16, it significantly improves the bending section modulus of the dock gate section, effectively... To resist the bending load generated by the external tidal pressure and ensure the structural stability of the dock gate body 2, the design goal of "small footprint and high strength" is achieved. The elbow plate 11 is set on the lower surface of the top of the dock gate body 2, which rigidly connects the upper end of the vertical T-profile 10 to the top plate structure of the dock gate body 2, disperses the concentrated stress at the end of the profile, and realizes the smooth transfer of load between the vertical T-profile 10 and the shell of the dock gate body 2. This avoids stress concentration at the node, which may cause structural fatigue or damage, and ensures the overall structural strength and service life of the dock gate under narrow size constraints.

[0024] Please see the appendix Figure 2 The watertight component includes a retaining wall 3, which is located at the bottom and both ends of the dock gate body 2. The bottom slope of the dock gate body 2 is connected to an ear plate 4, and the other side of the ear plate 4 is connected to a spiral buckle 5. A guide block 6 is provided at the bottom of the dock gate body 2, and a guide base 7 is connected to the bottom of the guide block 6. A water-stop rubber 8 is connected to one side of the bottom of the dock gate body 2, and a steel plate 9 is provided between the water-stop rubber 8 and the retaining wall 3. Specifically, when the main body 2 of the dock gate is hoisted into place, the guide block 6 at the bottom slides down the inclined surface of the guide base 7. The weight of the dock gate is decomposed along the inclined surface, generating a radial component force towards the retaining wall 3 and the dock sill. This pushes the water-stop rubber 8 to actively adhere to the vertical surface of the retaining wall 3 and the bottom surface of the dock sill, forming an initial pre-compression force. This initial seal can be achieved without relying on the water pressure difference inside and outside the dock. After the main body 2 of the dock gate is in place, the screw buckle 5 is tightened. The tension is transmitted through the ear plate 4, further tightening the main body 2 of the dock gate towards the retaining wall 3 and the dock sill, supplementing the water-stop compression force and offsetting the pressure changes caused by tidal fluctuations. When the dock gate is squeezed inward, the top water-stop rubber 8 is squeezed into the triangular groove. At this time, due to the continuous rubber grooves set on both sides and bottom of the main body 2 of the dock gate, the top of the rubber grooves are on the same plane, the outer side of the rubber grooves use the side plate and bottom plate of the dock gate, and the inner side is thick flat iron. The top of the rubber is 25mm higher than the rubber groove, and the cross section of the water-stop rubber 8 is "K" shaped. Therefore, when the water-stop rubber 8 fills the rubber groove, the rubber groove structure ultimately supports the dock gate, protecting the rubber from excessive compression and plastic deformation. The rubber forms a watertight effect in the elastic deformation state, that is, a continuous watertight barrier is formed. The steel plate 9 serves as the water-stop mating surface to ensure the flatness of the contact surface, improve the sealing reliability, and resist the wear of mud and sand, thus extending the service life of the water-stop structure. Among them, the inner wall surface of the rubber groove must be thoroughly derusted and polished before bonding the water-stop rubber 8, and the surface of the neoprene rubber must also be polished to remove the oxide layer and cleaned, and oil contamination is not allowed.

[0025] Please see the appendix Figure 4 The upper surface of the slide body 1 is provided with a slide plate 12, the top of the slide plate 12 is provided with a wooden pad 13, and the top of the wooden pad 13 is connected to a crossbeam 14. Specifically, during the shipbuilding phase, the crossbeam 14 serves as a support component at the bottom of the hull, evenly transferring the weight of the hull to the slide plate 12 below via the wooden pads 13. The slide plate 12 is supported on the slide surface 18. The wooden pads 13 can be adapted to the bottom profile of the hull, dispersing local compressive stress and preventing damage to the hull structure under pressure. During launching operations, the slide surface 18 is coated with lubricating grease, and the slide plate 12 slides down along the slide body 1 with the hull, driving the ship to enter the water smoothly. The wooden pads 13 and the crossbeam 14 can be recycled and reused after being launched with the ship.

[0026] Please see the appendix Figure 6 The pumping assembly includes a seamless steel pipe 19, which is installed in the inner cavity of the dock gate body 2. One end of the seamless steel pipe 19 is provided with a raised panel type flat welding flange 20. An angle steel 21 is provided on one side of the end of the seamless steel pipe 19. A nut 22 is provided on the angle steel 21. A clamping pipe 23 is sleeved on the outside of one end of the seamless steel pipe 19. The other end of the seamless steel pipe 19 is connected to a long elbow 24. The other end of the long elbow 24 is connected to a through-hull sleeve 25. Specifically, during use, the seamless steel pipe 19 is fixed to the inside of the dock gate body 2 by means of angle steel 21, nuts 22 and clamp pipe 23 to form an integrated drainage channel. When the dock is flooded, a hose and submersible pump can be connected to the bottom convex plate flat welding flange 20 to pump the water in the dock into the seamless steel pipe 19. The water flows upward along the seamless steel pipe 19, turns after the long elbow 24 and passes through the hatch sleeve 25 to the outside of the dock gate body 2, and finally is discharged from the high-level outlet. Since the outlet end of the drainage pipe is raised by the long elbow 24 and the height is higher than the top edge of the dock gate, the water level difference forms a backflow prevention barrier. Even if the high tide level outside the dock is higher than inside the dock, the tide cannot flow back into the dock through the drainage pipe, thus continuously ensuring a dry working environment inside the dock.

[0027] Please see the appendix Figure 2 and attached Figure 7 The side plate and bottom plate of the main body 2 of the dock gate are integrated to form a water-stop groove whose size is adapted to the size of the water-stop rubber 8. The water-stop rubber 8 is in the shape of "K". Specifically, the water-stop groove uses the dock gate side plate and bottom plate as the outer groove wall directly, without the need for additional outer sealing plates. This simplifies the structure and reduces the thickness of the dock gate side, making it suitable for narrow spaces with low dock sills. The K-shaped water-stop rubber 8 is embedded in the groove. Its multi-lip cross-section allows multiple sealing lips to elastically deform simultaneously under pressure, forming multiple sealing lines and significantly improving watertight performance. Furthermore, the inner wall of the water-stop groove acts as a rigid limiting structure, which can limit the maximum compression deformation of the water-stop rubber 8, preventing it from being over-compressed and undergoing plastic deformation that could lead to permanent failure. This ensures the sealing effect while extending the service life of the water-stop rubber 8.

[0028] Please see the appendix Figure 2 One end of the spiral buckle 5 is connected to the end of the dock gate body 2 through the ear plate 4, and the other end of the spiral buckle 5 is connected to one end of the retaining wall 3 through the ear plate 4. Specifically, since the ear plates 4 are welded and fixed to the dock gate body 2 and the retaining wall 3 respectively, they provide a stable hinge fulcrum for the spiral buckle 5. The spiral buckle 5 has a positive and negative thread structure, and its overall length can be adjusted by rotating it, thereby precisely adjusting the tension force on the dock gate body 2. By tightening the spiral buckle 5, a continuous lateral pressure force can be applied to the dock gate body 2. Even when the water pressure difference between the inside and outside of the dock is insufficient at low tide, it can still ensure the tight fit between the water-stop rubber 8 and the retaining wall 3 and dock sill, maintaining reliable watertightness. At the same time, when tightened, it can restrain the outward displacement of the dock gate body 2, resist the impact of lateral loads such as typhoons and surges, prevent the dock gate body 2 from overturning and becoming unstable, and improve the disaster resistance of the overall structure.

[0029] Please see the appendix Figure 2 and attached Figure 7The water-stop rubber 8 is made of neoprene rubber with a new rubber content of not less than 60%. The corner joint of the vertical water-stop rubber 8 on the side and the horizontal water-stop rubber 8 at the bottom is bonded with a 45° bevel to form a closed-loop continuous sealing structure. Specifically, the neoprene rubber material possesses excellent resistance to seawater corrosion, aging, and elastic recovery. The new rubber content of no less than 60% ensures the rubber's elastic modulus and fatigue resistance, maintaining stable sealing performance under long-term tidal alternating loads. The vertical and horizontal water-stop rubber 8 adopts a 45° bevel joint bonding, increasing the bonding area of ​​the joint, improving the bonding strength and watertightness at the joint, avoiding sealing breaks at corners, and forming a closed-loop continuous sealing strip to achieve all-round seamless water stoppage on the sides and bottom of the dock gate, eliminating the risk of leakage at corners.

[0030] Please see the appendix Figure 2 The vertical T-shaped profile 10 is arranged vertically along the main body 2 of the dock gate. The height of the web of the vertical T-shaped profile 10 extends along the front and rear direction of the main body 2 of the dock gate and is greater than the front and rear width of the bottom plate of the main body 2 of the dock gate. The web protrudes into the internal cavity. Specifically, the vertical T-shaped profile 10 serves as the main load-bearing stiffener of the dock gate body 2. Its web extends and protrudes into the internal cavity of the dock gate, breaking through the limitation of the bottom plate width on the profile height. Without increasing the outer dimensions of the dock gate or the width of the dock sill, it significantly improves the moment of inertia and bending section modulus of the dock gate section, effectively resisting the bending load generated by the tidal pressure. Furthermore, the ends of the vertical T-shaped profile 10 are beveled and smoothly connected to the inner surface of the bottom plate at the same height, realizing the gradual transmission of force flow and avoiding stress concentration problems caused by abrupt changes in the cross section. The top elbow plate 11 firmly connects the vertical T-shaped profile 10 to the top plate of the dock gate, strengthening the force transmission performance of the end nodes and further improving the overall structural rigidity and bending load-bearing capacity. Combined with the horizontally arranged high-web T-shaped profiles, it can simultaneously strengthen the lateral and vertical structural strength of the dock gate body 2, achieving high-strength load-bearing capacity under a small outer dimension, and achieving a balance between reducing the footprint of the slipway and ensuring structural strength.

[0031] Please see the appendix Figure 5 The outer diameter of the slide rail insert 17 is matched with the inner diameter of the slide rail notch 16, and the slide rail insert 17 is symmetrically arranged along the vertical center line of the slide rail body 1.

[0032] Specifically, when using the dock gate body 2, the slide rail insert 17 is pulled out from the inside of the slide rail notch 16, making it easier to subsequently engage the dock gate body 2 with the inside of the slide rail notch 16. When the dock gate body 2 is separated from the slide rail notch 16, the slide rail insert 17 can be engaged with the inside of the slide rail notch 16, making it easier to subsequently form a complete slide rail with the slide rail body 1.

[0033] Workflow: During use, the slipway surface 18 on the slipway body 1 provides continuous sliding support for ship construction and launching. The platform surface 15 constitutes the basic load-bearing structure of the slipway body 1. A slipway notch 16 is opened at a preset position on the slipway body 1 as a dedicated installation station for the dock gate body 2. The system achieves rapid switching between water-blocking construction and ship launching without disrupting the overall layout of the slipway body 1 by replacing components such as "the dock gate body 2 is positioned to block water and the slipway insert 17 is positioned to open the slipway". To ensure the continuity of construction protection and launching operations during the tidal period, watertight components are arranged at the bottom and sides of the dock gate body 2. When the dock gate body 2 is installed into the slipway gap 16, the watertight components are tightly fitted to the bottom and sides of the slipway gap 16 and the corresponding parts of the slipway surface 15, forming a closed water-stop barrier at the interface between the dock gate body 2 and the slipway body 1. This prevents the outer tide water from seeping into the upstream construction area of ​​the slipway along the slipway surface 18, maintaining dry working conditions in the dock area and avoiding the impact of rising tide levels on ship construction operations. In the water-blocking condition, the main gate 2 sits within the slipway gap 16, and the slipway surface 18 is separated by the main gate 2 at this point. The main gate 2 and its supporting watertight structure achieve the water-blocking function, ensuring that the upstream slipway construction area is not affected by tides. At this time, the guide block 6 at the bottom of the main gate 2 slides down the inclined guide base 7. The weight of the main gate is decomposed along the inclined surface, generating a radial component force towards the retaining wall 3 and the dock sill. This pushes the water-stop rubber 8 to actively adhere to the vertical surface of the retaining wall 3 and the bottom surface of the dock sill, forming an initial pre-compression force. This achieves preliminary sealing without relying on the water pressure difference inside and outside the dock. Once the main gate 2 is in place, tightening the spiral buckle 5 transmits tension through the ear plate 4, further pulling the main gate 2 towards the retaining wall 3 and the dock sill, supplementing the water-stopping pressure and offsetting the pressure changes caused by tidal fluctuations. The water-stopping rubber 8, after being compressed, undergoes elastic deformation, filling the gaps between the main gate 2, the retaining wall 3, and the dock sill, forming a continuous watertight barrier. The steel plate 9, as the water-stopping mating surface, ensures the flatness of the contact surface, improves sealing reliability, and resists silt abrasion, extending the service life of the water-stopping structure. During launching, the main gate 2 is lifted away from the slideway. The slipway insert 17 is engaged and embedded into the inner side of the slipway notch 16, precisely filling the broken area of ​​the slipway and restoring the slipway surface 18 to a continuous and smooth state. This provides a continuous sliding support surface for launching the ship, ensuring the ship slides smoothly down the slipway body 1. After the launching operation is completed, the slipway insert 17 is lifted off and the dock gate body 2 is reset, quickly restoring the water-blocking function and allowing the ship to enter the next round of shipbuilding cycle. During pumping, the seamless steel pipe 19 is fixed to the inner side of the dock gate body 2 through the cooperation of angle steel 21, nuts 22, and clamp pipe 23, forming an integrated drainage channel. When the dock is flooded, a hose and a submersible pump can be connected to the bottom convex plate flat welding flange 20 to pump the water into the seamless steel pipe 19. The water flows upward along the seamless steel pipe 19, turns after the long elbow 24, passes through the hatch sleeve 25 and extends to the outside of the dock gate body 2, and finally is discharged from the high-level outlet. Since the outlet end of the drainage pipe is raised by the long elbow 24 and is higher than the top edge of the dock gate, the water level difference forms a backflow prevention barrier. Even if the high tide level outside the dock is higher than inside the dock, the tide cannot flow back into the dock through the drainage pipe, thus continuously ensuring a dry working environment inside the dock. Among them, the inwardly extending high-web inclined stiffening assembly serves as the internal load-bearing reinforcement structure of the dock gate body 2. With the vertical T-profile 10 as the core load-bearing component, it is arranged vertically along the interior of the dock gate body 2. Together with the top elbow plate 11, it enhances the structural rigidity of the dock gate. The web of the vertical T-profile 10 protrudes into the internal cavity of the dock gate body 2, and its web height exceeds the width limit of the bottom plate of the dock gate body 2. Without increasing the outer contour dimensions of the dock gate or additionally occupying the width of the slide gap 16, it significantly improves the bending section modulus of the dock gate section, effectively... To resist the bending load generated by the external tidal pressure and ensure the structural stability of the dock gate body 2, the design goal of "small footprint and high strength" is achieved. The elbow plate 11 is set on the lower surface of the top of the dock gate body 2, which rigidly connects the upper end of the vertical T-profile 10 to the top plate structure of the dock gate body 2, disperses the concentrated stress at the end of the profile, and realizes the smooth transfer of load between the vertical T-profile 10 and the shell of the dock gate body 2. This avoids stress concentration at the node, which may cause structural fatigue or damage, and ensures the overall structural strength and service life of the dock gate under narrow size constraints.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dock gate for a longitudinally launched slipway, comprising a slipway body (1), a dock gate body (2) disposed on the slipway body (1), and a dock gate mechanism disposed on the slipway body (1), characterized in that, The dock gate structure includes a watertight component, an inwardly extending high-webbed inclined stiffening component, a slide rail compensation component, and a pumping component. Watertight components are installed at the bottom and both sides of the main body of the dock gate (2); An inward-extending high-web plate beveling stiffening assembly is installed inside the dock gate body (2). The inward-extending high-web plate beveling stiffening assembly includes a vertical T-shaped profile (10). The vertical T-shaped profile (10) is installed inside the dock gate body (2). An elbow plate (11) is installed on one side of the lower surface of the top of the dock gate body (2). A slide rail compensation component is provided on the slide rail body (1). The slide rail compensation component includes a platform (15), which is located at the bottom of the slide rail body (1). A slide rail notch (16) is provided on the slide rail body (1). A slide rail insert (17) is engaged inside the slide rail notch (16). A slide rail surface (18) is provided on the surface of the slide rail body (1). The pumping assembly is located on the inside of the dock gate body (2).

2. The dock gate of a longitudinal launching slipway according to claim 1, characterized in that, The watertight component includes a retaining wall (3), which is located at the bottom and both ends of the dock gate body (2). The bottom slope of the dock gate body (2) is connected to an ear plate (4), and the other side of the ear plate (4) is connected to a spiral buckle (5). The bottom of the dock gate body (2) is provided with a guide block (6), and the bottom of the guide block (6) is connected to a guide base (7). A water-stop rubber (8) is connected to one side of the bottom of the dock gate body (2), and a steel plate (9) is provided between the water-stop rubber (8) and the retaining wall (3).

3. The dock gate of a longitudinal launching slipway according to claim 1, characterized in that, The upper surface of the slide body (1) is provided with a slide plate (12), the top of the slide plate (12) is provided with a wooden block (13), and the top of the wooden block (13) is connected to a crossbeam (14).

4. The dock gate of a longitudinal launching slipway according to claim 1, characterized in that, The pumping assembly includes a seamless steel pipe (19), which is located in the inner cavity of the dock gate body (2). One end of the seamless steel pipe (19) is provided with a raised panel type flat welding flange (20). An angle steel (21) is provided on one side of the end of the seamless steel pipe (19). A nut (22) is provided on the angle steel (21). A clamping pipe (23) is sleeved on the outer side of one end of the seamless steel pipe (19). The other end of the seamless steel pipe (19) is connected to a long elbow (24). The other end of the long elbow (24) is connected to a hatch sleeve (25).

5. The dock gate of a longitudinal launching slipway according to claim 2, characterized in that, The side plate and bottom plate of the main body (2) of the dock gate are integrally formed to form a water-stop groove whose size is adapted to the size of the water-stop rubber (8), and the water-stop rubber (8) is in the shape of "K".

6. The dock gate of a longitudinal launching slipway according to claim 2, characterized in that, One end of the spiral buckle (5) is connected to the end of the dock gate body (2) through the ear plate (4), and the other end of the spiral buckle (5) is connected to one end of the retaining wall (3) through the ear plate (4).

7. The dock gate of a longitudinal launching slipway according to claim 2, characterized in that, The water-stop rubber (8) is made of neoprene rubber with a new rubber content of not less than 60%. The corner joint of the vertical side water-stop rubber (8) and the horizontal bottom water-stop rubber (8) is bonded with a 45° bevel to form a closed-loop continuous sealing structure.

8. The dock gate of a longitudinal launching slipway according to claim 1, characterized in that, The vertical T-shaped profile (10) is arranged vertically along the main body (2) of the dock gate. The height of the web of the vertical T-shaped profile (10) extends along the front and rear direction of the main body (2) of the dock gate and is greater than the front and rear width of the bottom plate of the main body (2). The web protrudes into the internal cavity.

9. The dock gate of a longitudinal launching slipway according to claim 1, characterized in that, The outer diameter of the slide insert (17) is matched with the inner diameter of the slide notch (16), and the slide insert (17) is symmetrically arranged along the vertical center line of the slide body (1).

Images