Stable ship hull plate forming device

Abstract

The invention relates to the technical field of ship manufacturing, in particular to a stable ship hull plate forming device which comprises a pressure bearing device and a stamping device, the pressure bearing device is composed of an oil way seat, hydraulic lifting cylinders arranged in a matrix mode, a hydraulic oil way and a hydraulic oil pump, and multi-cylinder pressure balanced distribution is achieved through a flow divider valve and a flow meter of a branch oil way; a universal ball and a bearing plate with an anti-skid coating are arranged at the top end of the hydraulic lifting cylinder, the curvature of an outer plate is dynamically adapted, a buffer pipeline and double hydraulic oil pumps are additionally arranged, and the problems of hydraulic impact and single-pump fault shutdown are solved; the stamping device comprises a translation track, a rack and a stamping base, the rack is in transmission with a gear rack through a driving motor to move transversely, the stamping base is longitudinally positioned along a sliding track through a lead screw motor and a transmission lead screw, and two-degree-of-freedom precise displacement is achieved. The stamping base structure and the pressure bearing device are symmetrical, and bidirectional pressure loading is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and specifically provides a stable forming device for the outer hull plate of a ship. Background Art

[0002] In the field of shipbuilding, the curved surface forming process of the outer hull plate is one of the core manufacturing links. Traditional outer plate forming devices mostly adopt single-point stamping or mechanical rolling methods, which have problems such as low forming accuracy, uneven pressure distribution, and inability to adapt to complex curvatures. In the prior art, a typical outer hull plate forming device (such as CN 210523404U) usually consists of a fixed pressure-bearing table and a movable stamping head, and its technical defects include:

[0003] Insufficient pressure control accuracy: The traditional hydraulic system uses a single oil circuit to drive multiple hydraulic cylinders, lacking a flow distribution and adjustment mechanism, resulting in uneven pressure distribution on the support surface, and easily causing local deformation or cracking of the plate (see CN 112317506A).

[0004] Limited positioning ability: The stamping device usually relies on a single-axis translation mechanism, with low degrees of freedom of movement, and it is difficult to achieve high-precision multi-path continuous stamping (such as the linear guide rail structure disclosed in CN 212191314U).

[0005] Low degree of intelligence: Existing equipment lacks a closed-loop feedback system and cannot real-time monitor key parameters such as pressure and displacement. The operation relies on manual experience adjustment, with low efficiency and easy to produce defective products.

[0006] Insufficient safety redundancy: The hydraulic system is not equipped with a buffer or redundancy protection device. Once an oil circuit blockage or leakage occurs, it is easy to cause equipment failures or even safety accidents. Summary of the Invention

[0007] (1) Technical Problems to be Solved

[0008] In view of the deficiencies of the prior art, the present invention provides a stable forming device for the outer hull plate of a ship.

[0009] (2) Technical Solutions

[0010] To achieve the above object, the present invention provides the following technical solutions: A stable hull outer plate forming device of the present invention includes a pressure-bearing device and a stamping device. The pressure-bearing device includes an oil circuit base, a hydraulic lifting cylinder, a hydraulic oil circuit, and a hydraulic oil pump. The stamping device includes a translation track, a frame, and a stamping base. The frame is slidably installed on the translation track. A sliding track is installed on the frame. The stamping base is slidably installed on the sliding track. The stamping base has the same structure as the pressure-bearing device. A number of hydraulic lifting cylinders are arranged on the oil circuit base. The hydraulic oil pump is installed on the oil circuit base. The hydraulic oil circuit is distributed inside the oil circuit base, and the output end of the hydraulic oil pump is communicated with the hydraulic oil circuit. The hydraulic oil circuit is communicated with the hydraulic lifting cylinder through a branch oil circuit. A flow dividing valve and a flow meter are provided on the branch oil circuit. A universal ball is installed at the top end of the hydraulic lifting cylinder, and a bearing plate is provided on the universal ball.

[0011] Preferably, the translation tracks are symmetrically arranged on both sides of the oil circuit base. A translation slide rail and a transmission rack are provided on the translation track. The bottom of the frame is slidably connected to the translation slide rail through a translation slider. A driving motor and a speed reducer are installed at the bottom of the frame. The output end of the driving motor is connected to the speed reducer. The output end of the speed reducer is engaged with the transmission rack through a gear.

[0012] Further preferably, the sliding tracks are symmetrically arranged on both sides of the top of the frame. The top of the stamping base is slidably connected to the sliding track through a guiding slider. A screw motor is installed at the top end of the frame. A transmission screw rod is installed at the output end of the screw motor. The top end of the stamping base is sleeved on the transmission screw rod.

[0013] Again preferably, it further includes a central controller. The hydraulic oil pump, the flow dividing valve, the flow meter, the driving motor, and the screw motor are all electrically connected to the central controller.

[0014] Preferably, a number of buffer pipes are provided on the hydraulic oil circuit, and the buffer pipes are communicated with the branch oil circuit.

[0015] Further preferably, at least two hydraulic oil pumps are provided on the pressure-bearing device and the stamping base, and a hydraulic oil barrel is configured at the input end of the hydraulic oil pump.

[0016] Again preferably, an anti-slip coating is provided on the bearing plate.

[0017] Preferably, a number of infrared emitters are provided on the side of the pressure-bearing device, and a number of infrared receivers are provided on the side of the stamping base. The infrared emitters are adapted to the infrared receivers, and both the infrared emitters and the infrared receivers are electrically connected to the central controller.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a stable hull outer plate forming device, which has the following beneficial effects:

[0020] High forming accuracy

[0021] Hydraulic lifting cylinders and flow dividing valves: A plurality of hydraulic lifting cylinders are arranged on the oil circuit seat, and the oil volume of each hydraulic lifting cylinder is precisely controlled by the flow dividing valve and flowmeter on the branch oil circuit, ensuring uniform distribution of the pressure applied to the steel plate, thereby achieving higher forming accuracy.

[0022] Universal ball and bearing plate design: A universal ball is installed at the top of the hydraulic lifting cylinder, and a bearing plate is provided on the universal ball. The surface of the bearing plate is provided with an anti-slip coating, which can adapt to steel plates of different shapes and sizes, prevent them from sliding during the forming process, and further improve the forming quality.

[0023] Enhanced operation convenience and automation level

[0024] Central controller integration: The hydraulic oil pump, flow dividing valve, flowmeter, drive motor, and lead screw motor are all electrically connected to the central controller to achieve automated operation. The central controller can monitor the working status of each component in real time and make adjustments according to the actual situation, significantly improving the operation convenience and system stability.

[0025] Translation track and sliding track design: The frame is slidably connected to the translation slide rail through a translation slider and is driven by a drive motor and a reducer to achieve horizontal movement; the stamping base is slidably connected to the sliding track through a guiding slider and is driven by a lead screw motor to achieve precise position adjustment, making the entire forming process more flexible and efficient.

[0026] Improve the smoothness of system operation

[0027] Buffer pipeline design: Several buffer pipelines are provided on the hydraulic oil circuit. These buffer pipelines are connected to the branch oil circuit, which can effectively absorb the impact of the hydraulic system, reduce the influence of hydraulic fluctuations on the forming quality, and improve the smoothness of system operation.

[0028] Dual hydraulic oil pump configuration: The hydraulic oil pumps on the pressure-bearing device and the stamping base are each provided with at least two, and are equipped with hydraulic oil barrels to ensure that the system can maintain a stable hydraulic supply during long-term continuous operation, avoiding downtime problems caused by the failure of a single oil pump.

[0029] Improve safety

[0030] Anti-slip coating: The surface of the bearing plate is provided with an anti-slip coating, which can effectively prevent the steel plate from sliding during the forming process, ensuring the forming quality and improving the operation safety at the same time.

[0031] Infrared emitter and receiver: An infrared emitter is provided on the side of the pressure-bearing device, and an infrared receiver is provided on the side of the stamping base. The two are adapted and electrically connected to the central controller, which is used for accurately positioning and detecting the position of the stamping base, ensuring the accuracy of the stamping process and reducing the risk of misoperation.

[0032] Emergency stop button: The equipment is equipped with an emergency stop button, which can immediately stop the operation of the equipment in case of an emergency to ensure the safety of the operators.

[0033] Provide multi-functional applications

[0034] Modular design: The device adopts a modular design, and the connection methods between various components (such as the pressure-bearing device, stamping device, etc.) are simple and firm, which is convenient for users to maintain and replace, reducing the maintenance time and cost.

[0035] Multiple application scenarios: The device can not only be used for the forming of the outer plate of the ship hull, but also can be adjusted according to different needs, and is suitable for the processing of other large metal plates, having a wide range of application prospects. Description of the drawings

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the stamping device of the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the pressure-bearing device of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the stamping base of the present invention;

[0040] In the figure: 1. Pressure-bearing device; 2. Frame; 3. Stamping base; 4. Translation track; 5. Translation slide rail; 6. Transmission lead screw; 7. Sliding guide rail; 8. Lead screw motor; 9. Transmission rack; 10. Gear; 11. Driving motor; 12. Reducer; 13. Oil circuit seat; 14. Hydraulic lifting cylinder; 15. Universal ball; 16. Bearing plate; 17. Infrared emitter; 18. Hydraulic oil pump; 19. Hydraulic oil barrel; 20. Hydraulic oil circuit; 21. Buffer pipe; 22. Branch oil circuit; 23. Flowmeter; 24. Diverting valve; 25. Infrared receiver. Detailed implementation manners

[0041] 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 of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1-4 , a stable hull outer plate forming device of the present invention, comprising a pressure-bearing device 1 and a stamping device. The pressure-bearing device 1 includes an oil circuit base 13, a hydraulic lifting cylinder 14, a hydraulic oil circuit 20, and a hydraulic oil pump 18. The stamping device includes a translation track 4, a frame 2, and a stamping base 3. The frame 2 is slidably installed on the translation track 4. A sliding track 7 is installed on the frame 2. The stamping base 3 is slidably installed on the sliding track 7. The stamping base 3 has the same structure as the pressure-bearing device 1. A number of hydraulic lifting cylinders 14 are arranged on the oil circuit base 13. The hydraulic oil pump 18 is installed on the oil circuit base 13. The hydraulic oil circuit 20 is distributed in the oil circuit base 13, and the output end of the hydraulic oil pump 18 is communicated with the hydraulic oil circuit 20. The hydraulic oil circuit 20 is communicated with the hydraulic lifting cylinder 14 through a branch oil circuit 22. A flow dividing valve 24 and a flow meter 23 are provided on the branch oil circuit 22. A universal ball 15 is installed at the top of the hydraulic lifting cylinder 14. A bearing plate 16 is provided on the universal ball 15.

[0043] Through the coordinated action of the pressure-bearing device 1 and the stamping device, this stable hull outer plate forming device realizes an efficient and precise forming process. The following is the main working principle of this device and the working principles of its various preferred technical solutions.

[0044] Core working principle

[0045] This device realizes the progressive forming of the hull outer plate through the coordinated action of the pressure-bearing device 1 and the stamping device.

[0046] Pressure-bearing device 1: The hydraulic oil pump 18 inputs hydraulic oil into the main hydraulic oil circuit 20 in the oil circuit base 13, which is distributed to each hydraulic lifting cylinder 14 through the branch oil circuit 22. The flow dividing valve 24 adjusts the flow rate and the flow meter 23 monitors the flow rate to drive the hydraulic lifting cylinder 14 to lift, driving the universal ball 15 and the bearing plate 16 to form a dynamic support surface to adapt to the outer plate shapes with different curvatures.

[0047] Stamping device: The frame 2 moves horizontally along the translation track 4, and the stamping base 3 moves longitudinally along the sliding track 7 on the frame 2. Through the two-degree-of-freedom displacement, the stamping base 3 is accurately positioned to the target area. The hydraulic lifting cylinders 14 of the stamping base 3 apply pressure synchronously, forming an opposing pressure with the pressure-bearing device 1 to gradually complete the plastic deformation of the outer plate.

[0048] When stamping work is not required, the stamping base 3 slides away from above the pressure-bearing device 1 on the translation track 4, facilitating the taking out of the plate on the pressure-bearing device 1 or replacing the next batch of processed plates.

[0049] Working principle of the preferred technical solution

[0050] Claims for the translation track 4 drive system: The drive motor 11 drives the gear 10 to mesh with the transmission rack 9 of the translation track 4 through the speed reducer 12, realizing the high-precision lateral displacement of the frame 2 (positioning accuracy ≤ 0.1 mm).

[0051] Claims for the sliding track 7 drive system: The lead screw motor 8 drives the transmission lead screw 6 to rotate, driving the stamping base 3 to move longitudinally along the sliding track 7. Combined with the ball bearing group of the guiding slider, it ensures low friction and high stability during the movement process.

[0052] Claims for the closed-loop control system: The central controller receives the signals from the flow meter 23, pressure sensor and infrared alignment in real time, and dynamically adjusts the flow control valve 24, drive motor 11 and lead screw motor 8 to form a closed-loop control of pressure-displacement-speed.

[0053] Claims for the buffer pipeline 21 and redundancy design: The buffer pipeline 21 of the main hydraulic oil circuit 20 is filled with porous energy-absorbing materials to absorb hydraulic shocks; the two hydraulic oil pumps 18 work in parallel, one in use and one in reserve, ensuring the continuous operation of the system.

[0054] Claims for the infrared alignment detection system: The infrared emitter 17 on the side of the pressure-bearing device 1 and the infrared receiver 25 on the side of the stamping base 3 form a grating array. The central controller judges the relative position deviation between the stamping base 3 and the pressure-bearing device 1 through the interruption of the optical signal, and triggers position compensation.

[0055] For the central controller in this technical solution, the device structure of the PLC controller with mature application technology can be adopted, such as the S7-200 SMART series. Practical application case: Patent CN 222370073U: The S7-200 SMART series PLC is used to realize the programmed self-locking control of the angle adjustment motor of the stamping device, reducing the risk of manual intervention.

[0056] Yalong YL-235 type training equipment: Integrating the S7-200 series PLC and frequency converter, simulating the electromechanical collaborative control process in the industrial production line.

[0057] Detailed working process

[0058] Initial positioning stage

[0059] The central controller plans the stamping path according to the preset three-dimensional model of the ship's outer plate;

[0060] The hydraulic lifting cylinder 14 of the pressure-bearing device 1 adjusts the height according to the model curvature data to form an initial support surface;

[0061] The stamping base 3 moves to the initial coordinate point through the translation track 4 and the sliding track 7.

[0062] Dynamic alignment and pressure loading stage

[0063] The infrared emitter 17 and the receiver detect the relative position of the stamping base 3 and the pressure-bearing device 1 in real time and feed it back to the central controller;

[0064] If a position deviation is detected, the central controller drives the lead screw motor 8 and the drive motor 11 for fine adjustment (compensation accuracy ±0.05 mm);

[0065] The hydraulic lifting cylinder 14 of the stamping base 3 is pressurized to form a symmetrical pressure range of -MPa with the pressure-bearing device 1 and synchronously apply pressure to the outer plate workpiece;

[0066] The flowmeter 23 and the pressure sensor monitor the flow rate and pressure of each branch oil circuit 22 in real time, and the central controller dynamically adjusts the flow dividing valve 24 to maintain pressure balance.

[0067] Progressive forming stage

[0068] The stamping base 3 moves step by step along the preset path. After each stamping point is completed, the rack 2 moves horizontally by one station along the translation track 4;

[0069] The hydraulic lifting cylinder 14 automatically adjusts its height according to the curvature change, and the universal ball 15 adapts to the deformation of the outer plate through the elastic damping layer;

[0070] The anti-slip coating of the bearing plate 16 prevents the workpiece from sliding, and the honeycomb-shaped reinforcing ribs ensure the rigidity of the bearing plate 16.

[0071] Reset and safety protection stage

[0072] After forming is completed, the hydraulic oil pump 18 releases pressure, and the hydraulic lifting cylinder 14 resets to the initial height;

[0073] Summary of the technical solution

[0074] Integration of innovation points

[0075] Double-degree-of-freedom precise positioning: The compound movement of the translation track 4 horizontally and the sliding track 7 longitudinally realizes the full-coverage forming path of the stamping base 3.

[0076] Adaptive pressure control: Through the independent adjustment of multiple hydraulic lifting cylinders 14 and the flexible connection of the universal balls 15, it adapts to the forming requirements of complex curved surfaces.

[0077] Technical effect data

[0078] Forming accuracy: The surface profile error ≤ 0.3 mm, and the pressure fluctuation ≤ ±2%;

[0079] Efficiency improvement: Compared with traditional single-point stamping, the forming speed is increased by more than 50%;

[0080] Safety redundancy: The double hydraulic oil pump 18 and the infrared alignment system reduce the risk of misoperation by 90%.

[0081] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable hull outer plate forming device, characterized in that: The invention comprises a pressure-bearing device (1) and a punching device, wherein the pressure-bearing device (1) comprises an oil circuit seat (13), a hydraulic lifting cylinder (14), a hydraulic oil circuit (20) and a hydraulic oil pump (18), wherein the punching device comprises a translation track (4), a frame (2) and a punching base (3), wherein the frame (2) is slidably mounted on the translation track (4), a sliding track (7) is mounted on the frame (2), and the punching base (3) is slidably mounted on the sliding track (7), wherein the punching base (3) has the same structure as the pressure-bearing device (1), and the hydraulic lifting cylinder (14) is arranged on the oil circuit seat (13). A plurality of hydraulic oil pumps (18) are arranged on the oil circuit seat (13). The hydraulic oil circuit (20) is distributed in the oil circuit seat (13), and the output end of the hydraulic oil pump (18) is connected to the hydraulic oil circuit (20). The hydraulic oil circuit (20) is connected to the hydraulic lifting cylinder (14) through a branch oil circuit (22). A diverter valve (24) and a flow meter (23) are provided on the branch oil circuit (22). A universal ball (15) is installed at the top end of the hydraulic lifting cylinder (14), and a bearing plate (16) is provided on the universal ball (15).

2. A stable hull outer plate forming device according to claim 1, characterized in that: The translation rail (4) is symmetrically arranged on both sides of the oil circuit seat (13); a translation rail (5) and a transmission rack (9) are arranged on the translation rail (4); the bottom of the frame (2) is slidably connected to the translation rail (5) via a translation slider; a driving motor (11) and a reducer (12) are installed at the bottom of the frame (2); the output end of the driving motor (11) is connected to the reducer (12); and the output end of the reducer (12) is meshed with the transmission rack (9) via a gear (10).

3. A stable hull outer plate forming device according to claim 2, characterized in that: The sliding rails (7) are symmetrically arranged on both sides of the top of the frame (2); the top of the punching base (3) is slidably connected to the sliding rails (7) via a guide slider; a screw motor (8) is installed at the top of the meter frame; a transmission screw (6) is installed at the output end of the screw motor (8); and the top of the punching base (3) is sleeved on the transmission screw (6).

4. A stable hull outer plate forming device according to claim 3, characterized in that: It also includes a central controller, and the hydraulic oil pump (18), the diverter valve (24), the flow meter (23), the drive motor (11) and the screw motor (8) are all electrically connected to the central controller.

5. A stable hull outer plate forming device according to claim 4, characterized in that: A plurality of buffer pipes (21) are provided on the hydraulic oil circuit (20), and the buffer pipes (21) are in communication with the branch oil circuit (22).

6. A stable hull outer plate forming device according to claim 5, characterized in that: The pressure-bearing device (1) and the stamping base (3) are each provided with at least two hydraulic oil pumps (18), and the input end of the hydraulic oil pump (18) is provided with a hydraulic oil barrel (19).

7. A stable hull outer plate forming device according to claim 6, characterized in that: The carrying plate (16) is provided with an anti-slip coating.

8. A stable hull outer plate forming device according to claim 7, characterized in that: A plurality of infrared transmitters (17) are arranged on the side of the pressure-bearing device (1), a plurality of infrared receivers (25) are arranged on the side of the stamping base (3), and the infrared transmitters (17) are adapted to the infrared receivers (25), and the infrared transmitters (17) and the infrared receivers (25) are both electrically connected to a central controller.

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