Marine wave generating platform

Abstract

The utility model provides a marine wave generating table which comprises a lower platform, an upper platform, a first support, a first driving part, a clamping block, a second support and a second driving part. Two first supports are arranged on the lower platform in the first direction in a spaced mode, a first driving part is arranged between the two first supports, and the first driving part is in transmission connection with the clamping block so that the clamping block can swing in the first direction; two second supports are arranged at the bottom of the upper platform in the second direction in a spaced mode, and the second driving part is connected to the clamping blocks and the second supports so that the upper platform can swing in the second direction. The first driving part and the second driving part are connected in series through the clamping block, so that the whole system is compact in structure and high in integration level, the size and weight of the wave generating table are reduced, the space utilization rate is increased, the manufacturing cost is reduced, the movement flexibility and controllability of the upper platform are improved, and the wave generating table can adapt to more complex working environments.

Description

Technical Field

[0001] The utility model relates to the field of marine hull wave sway testing, in particular to a marine wave generating platform. Background Art

[0002] The swaying of the ship's hull at sea can cause instability in the equipment installed on the ship. If the connection between the equipment and the hull is not tight, the equipment may topple over with the swaying of the hull, causing an accident.

[0003] Based on the problem that the ship hull will sway with the waves at sea, the research on the ship stabilizing platform requires a ship wave generating platform to simulate the roll and pitch of the ship hull at sea and provide accurate sway angle data for the ship stabilizing platform. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model provides a marine wave generating platform, which uses a modular series structure to achieve the roll and pitch of the upper platform. It is not only compact in structure and highly integrated, but also the roll part and the pitch part are independent of each other and can be replaced separately. The technical solution adopted by the utility model is:

[0005] A marine wave generating platform comprises a lower platform, an upper platform, a first bracket, a first driving part, a clamping block, a second bracket and a second driving part;

[0006] Two first brackets are arranged at intervals along the first direction on the lower platform, a first driving part is arranged between the two first brackets, and the first driving part is transmission-connected with the clamping block so that the clamping block swings around the first direction;

[0007] Two second brackets are arranged at intervals along the second direction at the bottom of the upper platform, and the second driving part is respectively connected to the clamping block and the second bracket to make the upper platform swing around the second direction.

[0008] Further, the first driving part includes a first gear, a second gear, a first reduction motor, and an intermediate rotating shaft;

[0009] The first reduction motor is located between the two first brackets and fixed on the lower platform, and the output ends of the first reduction motor are respectively connected to the two first gears;

[0010] The intermediate rotating shaft extends along the first direction, and its two ends are rotatably connected to the two first brackets respectively. Two second gears are arranged on the intermediate rotating shaft at intervals, and the two second gears are respectively meshed with the two first gears;

[0011] One end of the clamping block is fixedly connected to the middle rotating shaft.

[0012] Further, the second driving part includes an upper rotating shaft and a second reduction motor;

[0013] The other end of the clamping block is fixedly connected to the upper rotating shaft, and the upper rotating shaft extends along the second direction, and its two ends are respectively connected to the two second brackets;

[0014] The second reduction motor is fixed on one of the second brackets, and the output end of the second reduction motor is drivingly connected to one end of the upper rotating shaft.

[0015] Further, an attitude sensor is arranged on the lower platform.

[0016] Further, the output end of the first reduction motor is provided with a lower rotating shaft, and a first paddle is arranged on the lower rotating shaft. Three first photoelectric sensors are arranged on the first bracket corresponding to the first paddle, and the three first photoelectric sensors can respectively sense the first paddle.

[0017] Further, a second paddle is arranged on the upper rotating shaft. Three second photoelectric sensors are arranged on the second bracket corresponding to the second paddle, and the three second photoelectric sensors can respectively sense the second paddle.

[0018] Advantages of the present utility model:

[0019] Through the combination of the first driving part and the second driving part, the series compound motion control of the upper platform is realized, the motion flexibility and controllability of the upper platform are increased, and it can adapt to more complex working environments;

[0020] For application scenarios that require precise positioning, the reduction motor and the gear meshing are used in cooperation to achieve high-precision motion control. The reduction motor provides stable output torque and speed, and the gear transmits power through precise meshing, further improving the motion accuracy;

[0021] The first driving part and the second driving part are connected in series through the clamping block, so that the whole system has a compact structure and high integration, which is beneficial to reducing the volume and weight of the wave generator, improving the space utilization rate and reducing the manufacturing cost;

[0022] The structures of the first driving part and the second driving part are modular and independent of each other. When one of the modules fails, it can be replaced separately without affecting the operation of the whole system. If more motion functions need to be added, it can also be achieved by adding new modules;

[0023] As a key component connecting the two driving parts, the clamping block not only provides structural support, but also can transmit and disperse the force and torque in the motion process, and can be replaced separately, reducing the cost. Description of the Drawings

[0024] Figure 1 is a perspective view of the present application.

[0025] Figure 2 This is the structural diagram after removing the upper platform for this application.

[0026] Figure 3 This is the structural diagram after removing the upper platform and the second bracket for this application.

[0027] Figure 4 The figure is an assembly diagram of the second paddle, the second photoelectric sensor and the first bracket.

[0028] In the figure: 101-lower platform, 102-upper platform, 103-gesture sensor, 104-first bracket, 105-first gear, 106-second gear, 107-first reduction motor, 1071-lower shaft, 108-middle shaft, 109-upper shaft, 110-clamp, 111-second bracket, 112-second reduction motor, 113-first paddle, 114-first photoelectric sensor, 115-second paddle, 116-second photoelectric sensor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] Please see attached Figure 1-Figure 4 The utility model provides a wave generating platform for a ship, comprising a lower platform 101, an upper platform 102, a first bracket 104, a first driving unit, a clamping block 110, a second bracket 111 and a second driving unit; two first brackets 104 are arranged on the lower platform 101 at intervals along a first direction, a first driving unit is arranged between the two first brackets 104, and the first driving unit is transmission-connected with the clamping block 110 so that the clamping block 110 swings around the first direction; two second brackets 111 are arranged at intervals at the bottom of the upper platform 102 along a second direction, and the second driving unit is respectively connected to the clamping block 110 and the second bracket 111 so that the upper platform 102 swings around the second direction.

[0031] The first direction and the second direction of the marine wave generating platform of the present application are respectively arranged vertically. When the first direction is limited to the horizontal direction, the second direction is the longitudinal direction, and when the first direction is limited to the longitudinal direction, the second direction is the horizontal direction. Specifically, the first driving part and the second driving part are connected in series through the clamping block 110, so that the whole system has a compact structure and a high degree of integration, which is conducive to reducing the volume and weight of the wave generating platform, improving space utilization, and reducing manufacturing costs, and increasing the movement flexibility and controllability of the upper platform, so that it can adapt to more complex working environments.

[0032] In this application, please refer to the attached Figure 2 and attached Figure 3 The first driving part includes a first gear 105, a second gear 106, a first reduction motor 107, and an intermediate rotating shaft 108; the first reduction motor 107 is located between the two first brackets 104 and fixed on the lower platform 101, and the output ends of the first reduction motor 107 are respectively connected to the two first gears 105; the intermediate rotating shaft 108 extends along the first direction, and its two ends are respectively rotatably connected to the two first brackets 104, and two second gears 106 are spaced apart on the intermediate rotating shaft 108, and the two second gears 106 are respectively meshed with the two first gears 105; one end of the clamping block 110 is fixedly connected to the intermediate rotating shaft 108.

[0033] For example, when simulating the rolling process of the hull, the first reduction motor 107 drives the first gear 105 to rotate, and utilizes the meshing action of the first gear 105 and the second gear 106 to accurately transmit power to the second gear 106. As the second gear 106 rotates, the intermediate shaft 108 and the clamping block 110 rotate synchronously, driving the overall second driving part and the upper platform 102 to roll synchronously, thereby realizing roll drive. The swing angle of the upper platform 102 relative to the first direction is the simulated wave roll angle. The reduction motor and gear meshing cooperate with each other to realize high-precision motion control. The reduction motor provides stable output torque and speed, and the gears transmit power through precise meshing, which further improves the motion accuracy and provides accurate roll wave occurrence data.

[0034] In the present application, the second driving part includes an upper rotating shaft 109 and a second reduction motor 112; the other end of the clamping block 110 is fixedly connected to the upper rotating shaft 109, and the upper rotating shaft 109 extends along the second direction, and its two ends are respectively connected to two second brackets 111; the second reduction motor 112 is fixed on one of the second brackets 111, and the output end of the second reduction motor 112 is transmission-connected to one end of the upper rotating shaft 109.

[0035] For example, when simulating the pitching process of the hull, the second reduction motor 112 should drive the upper shaft 109 to rotate. Since the upper shaft 109 is relatively fixed to the clamp 110, when the upper shaft 109 cannot rotate, the torque will be transferred to the second bracket 111 connected to the second reduction motor 112, so that the second bracket 111 and the upper platform 102 can be pitched synchronously, thereby realizing pitch drive. The swing angle of the upper platform 102 relative to the second direction is the simulated wave pitch angle, and the gear transmission in the reduction motor is used to provide a stable output torque, thereby providing accurate pitch wave generation data.

[0036] In the present application, a posture sensor 103 is disposed on the lower platform 101 .

[0037] Specifically, the attitude sensor 103 is connected to the controller of the control system. In the initial state, the attitude sensor 103 sends the attitude of the lower platform 101, and takes the lower platform 101 in this attitude as the reference plane. At this time, the upper platform 102 is parallel to the lower platform 101, thereby establishing the coordinate system W of the lower platform 101 and the coordinate system A of the upper platform 102, so as to provide accurate data for wave compensation research.

[0038] In a specific embodiment, the lower end of the clamping block 110 is connected to the middle position of the intermediate rotating shaft 108, and the upper end is connected to the middle position of the upper rotating shaft 109. The second brackets 111 at both ends of the upper rotating shaft 109 are located on both sides of the first bracket 104, and each gear is arranged between the two second brackets 111; the first driving part and the second driving part are connected in series by the clamping block 110, so that the entire system structure is compact, square, and highly integrated, which is conducive to reducing the volume and weight of the wave generating platform, improving space utilization, and reducing manufacturing costs; further, the clamping block 110, as a key component connecting the two driving parts, not only provides structural support, but also can transmit and disperse the force and torque during the movement. There is no cumulative tolerance between rolling and pitching, and it can also be replaced separately to reduce costs.

[0039] Since a reasonable swing angle is required to simulate wave occurrence, excessive and unreasonable swing angles will not only affect the test accuracy, but also cause the equipment to capsize in practice. Therefore, a reasonable swing angle range needs to be ensured during the simulation of hull shaking.

[0040] To this end, the specific method of limiting the swing angle in the first direction is as shown in the attached Figure 4 As shown, the output end of the first reduction motor 107 is provided with a lower rotating shaft 1071, and the lower rotating shaft 1071 is provided with a first paddle 113. The first bracket 104 corresponding to the first paddle 113 is provided with three first photoelectric sensors 114, and the three first photoelectric sensors 114 can sense the first paddle 113 respectively.

[0041] When the first reduction motor 107 drives the lower shaft 1071 to rotate and drives the first gear 105 to rotate synchronously, the first paddle 113 switches back and forth between the three first photoelectric sensors 114 as the lower shaft 1071 rotates. The photoelectric sensor 114 is connected to the controller of the control system to feedback the position of the first paddle 113, judge the rotation angle of the lower shaft 1071, and then deduce the swing angle of the upper platform 102 according to the gear transmission ratio.

[0042] In a specific embodiment, three first photoelectric sensors 114 are arranged at equal angles, wherein the middle first photoelectric sensor 114 is perpendicular to the lower platform 101. In the initial state, the first paddle 113 is directly opposite to the middle first photoelectric sensor 114. At this time, the middle first photoelectric sensor 114 feeds back that the first paddle 113 is in the middle, and the corresponding upper platform 102 is in a horizontal state; when simulated waves occur, the forward or reverse rotation of the lower shaft 1071 will drive the first paddle 113 to move forward or reversely, and then the first photoelectric sensors 114 on both sides sense the position of the first paddle 113, and timely feed back that the upper platform 102 is in a state with a maximum forward swing angle or a maximum reverse swing angle.

[0043] In addition, the specific method of limiting the swing angle in the second direction is as shown in the attached Figure 3 As shown, a second paddle 115 is disposed on the upper rotating shaft 109 , and three second photoelectric sensors 116 are disposed on the second bracket 111 corresponding to the second paddle 115 . The three second photoelectric sensors 116 can sense the second paddle 115 respectively.

[0044] Since the upper rotating shaft 109 in the present application does not rotate with the drive of the second reduction motor 112, the relative rotation between the second upper rotating shaft 109 and the second bracket 111 is achieved by the swinging of the second bracket 111; specifically, when the second reduction motor 112 drives the upper platform 102 to swing, the three second photoelectric sensors 116 follow the longitudinal swing of the second bracket 111, respectively sense the second paddles 115, and feed back the rotation angle of the second bracket 111, thereby deriving the swing angle of the upper platform 102.

[0045] In a specific embodiment, three second photoelectric sensors 116 are arranged at equal angles, wherein the middle second photoelectric sensor 116 is perpendicular to the lower platform 101 in an initial state, and the corresponding upper platform 102 is in a horizontal state; when the upper platform 102 swings forward or reversely under the action of the second reduction motor 112, the position of the second paddle 115 is sensed by the second photoelectric sensors 116 on both sides, and timely feedback is given that the upper platform 102 is in a state with a maximum forward swing angle or a maximum reverse swing angle.

[0046] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A marine wave generating platform, characterized in that: It comprises a lower platform (101), an upper platform (102), a first bracket (104), a first driving unit, a clamping block (110), a second bracket (111) and a second driving unit; Two first brackets (104) are arranged at intervals along a first direction on the lower platform (101), a first driving unit is provided between the two first brackets (104), and the first driving unit is transmission-connected to the clamping block (110) so that the clamping block (110) swings around the first direction; Two second brackets (111) are arranged at intervals along the second direction at the bottom of the upper platform (102), and the second driving unit is respectively connected to the clamping block (110) and the second bracket (111), so that the upper platform (102) swings around the second direction.

2. The marine wave generating platform according to claim 1, characterized in that: The first driving part comprises a first gear (105), a second gear (106), a first reduction motor (107), and an intermediate rotating shaft (108); The first reduction motor (107) is located between the two first brackets (104) and fixed on the lower platform (101); the output end of the first reduction motor (107) is respectively connected to the two first gears (105); The intermediate rotating shaft (108) extends along a first direction, and its two ends are rotatably connected to the two first brackets (104) respectively. Two second gears (106) are arranged on the intermediate rotating shaft (108) at intervals, and the two second gears (106) are respectively meshed with the two first gears (105); One end of the clamping block (110) is fixedly connected to the middle rotating shaft (108).

3. The marine wave generating platform according to claim 1, characterized in that: The second driving part comprises an upper rotating shaft (109) and a second reduction motor (112); The other end of the clamping block (110) is fixedly connected to the upper rotating shaft (109); the upper rotating shaft (109) extends along the second direction, and the two ends of the upper rotating shaft are respectively connected to two second brackets (111); The second reduction motor (112) is fixed on one of the second brackets (111), and the output end of the second reduction motor (112) is drivingly connected to one end of the upper rotating shaft (109).

4. The marine wave generating platform according to claim 1, characterized in that: The lower platform (101) is provided with a posture sensor (103).

5. The marine wave generating platform according to claim 2, characterized in that: The output end of the first reduction motor (107) is provided with a lower rotating shaft (1071), a first paddle (113) is arranged on the lower rotating shaft (1071), and three first photoelectric sensors (114) are arranged on the first bracket (104) corresponding to the first paddle (113), and the three first photoelectric sensors (114) can respectively sense the first paddle (113).

6. The marine wave generating platform according to claim 3, characterized in that: A second paddle (115) is arranged on the upper rotating shaft (109), and three second photoelectric sensors (116) are arranged on a second bracket (111) corresponding to the second paddle (115), wherein the three second photoelectric sensors (116) can respectively sense the second paddle (115).

Images