Ship gear transmission device tilting environment simulation test bench, control system and test method

Abstract

The invention discloses a ship gear transmission device tilting environment simulation test bench, a control system and a test method, and belongs to the field of ship power system test systems. The technical problems that when an existing test bed simulates the swing environment of a ship, the posture is not accurate enough and the simulation effect is poor due to the structure of the existing test bed are solved. The upper platform is installed on the base through a hooke joint, the end of one side of the upper platform in the X-axis direction is connected with the base through a pitching hydraulic cylinder, and the end of one side of the upper platform in the Y-axis direction is connected with the base through a side-tipping hydraulic cylinder. The side-tipping hydraulic cylinder is independently controlled to stretch out and draw back, so that the upper platform rotates around the X axis; the telescopic action of the pitching hydraulic cylinder is independently controlled, so that the upper platform rotates around the Y axis; and meanwhile, the side-tipping hydraulic cylinder and the pitching hydraulic cylinder are controlled to do telescopic motion, so that the upper platform does composite motion around the X-axis and the Y-axis. Swing motion of the ship is simulated, control precision is high, and operation is convenient. The device is used for testing the ship gear transmission system.

Description

TECHNICAL FIELD

[0001] The application relates to a ship gear transmission device roll-pitch environment simulation test bench, a control system and a test method, and belongs to the field of ship power system test systems. BACKGROUND

[0002] For ship gear transmission device test experiments, conventional experiments are usually carried out on land test benches, but when a ship sails on the sea, the ship tilts and swings with the sea surface under the action of sea wind, sea waves and various factors, which deviates from the land test environment. The external environment greatly tests the safety and reliability of the gear transmission device. In order to verify the reliability of the ship equipment in the tilt and swing environment, it is necessary to design a roll-pitch environment simulation test bench under the guidance of relevant standards. It is very necessary to compare the differences between the two tests to provide the basis for the design and manufacture of the roll-pitch environment simulation test, carry out the technical research on the main engine input characteristic simulation and the roll-pitch environment simulation of the gear transmission device, and obtain comprehensive operation parameters to further comprehensively, in detail and scientifically evaluate the environmental adaptability and reliability of the ship gear transmission device. The existing test bench has the technical problems of inaccurate posture and poor simulation effect when simulating the swing environment of the ship.

[0003] In summary, the existing test bench has the technical problems of inaccurate posture and poor simulation effect when simulating the swing environment of the ship due to the structure of the test bench itself. SUMMARY

[0004] The application is to solve the technical problems of inaccurate posture and poor simulation effect of the existing test bench when simulating the swing environment of the ship due to the structure of the test bench itself, and further provides a ship gear transmission device roll-pitch environment simulation test bench, which comprises an upper platform, a hooke joint, a roll hydraulic cylinder, a pitch hydraulic cylinder and a base;

[0005] The upper platform is installed on the base through the hooke joint, one side end of the upper platform in the X-axis direction is connected with the base through the pitch hydraulic cylinder, and one side end of the upper platform in the Y-axis direction is connected with the base through the roll hydraulic cylinder.

[0006] The roll hydraulic cylinder is controlled to extend and retract separately, so that the upper platform rotates around the X-axis.

[0007] The pitch hydraulic cylinder is controlled to extend and retract separately, so that the upper platform rotates around the Y-axis.

[0008] The roll hydraulic cylinder and the pitch hydraulic cylinder are controlled to extend and retract simultaneously, so that the upper platform rotates around the X-axis and the Y-axis.

[0009] As another improvement of the application, the connection between the roll hydraulic cylinder and one side end of the upper platform in the Y-axis direction is hinged connection, and the connection between the roll hydraulic cylinder and the base is hinged connection.

[0010] As another improvement of the present application, the longitudinal oscillation hydraulic cylinder is connected to the upper platform along the X-axis direction side end in a hinged manner, and the longitudinal oscillation hydraulic cylinder is connected to the base in a hinged manner.

[0011] As another improvement of the present application, it further comprises a first servo valve, and the lateral oscillation hydraulic cylinder is controlled to extend and retract through the first servo valve.

[0012] As another improvement of the present application, it further comprises a second servo valve, and the longitudinal oscillation hydraulic cylinder is controlled to extend and retract through the second servo valve.

[0013] As another improvement of the present application, it further comprises an optical encoder, and the optical encoder is installed at the hinge shaft of the Hooke joint to measure the angular displacement of the upper platform.

[0014] As another improvement of the present application, it further comprises locking pull rods, and the two locking pull rods keep the upper platform horizontal.

[0015] As another improvement of the present application, the lateral oscillation hydraulic cylinder is provided with two, and the two lateral oscillation hydraulic cylinders are arranged at the two sides of the upper platform along the Y-axis direction.

[0016] The present application further provides a control system, comprising a task management unit, a servo control unit, an oil source control unit, a hydraulic source and a roll and pitch environment simulation test bench.

[0017] The task management unit is provided with a computer, and the computer is installed with software in the system, and the software is used to issue instructions to control the hydraulic source to start and pressurize, and the task management unit transmits the control instructions to the servo control unit through Ethernet.

[0018] The servo control unit is used to receive the control instructions of the task management unit and drive the upper platform to move, and the servo control unit is used to receive the angular displacement signal of the upper platform fed back by the optical encoder at the Hooke joint of the test bench and send it to the task management unit.

[0019] The oil source control unit is used to receive the hydraulic control instructions of the task management unit and control the running state of the hydraulic source through the oil source control unit.

[0020] The hydraulic source is used to provide hydraulic power for the roll and pitch environment simulation test bench.

[0021] The roll and pitch environment simulation test bench is used to simulate a two-degree-of-freedom roll and pitch environment.

[0022] The present application further provides a test method, comprising a tilt environment simulation method and a swing environment simulation method.

[0023] The tilt environment simulation method is specifically:

[0024] Rolling +45° or -45°, pitching +10° or -10°, test duration ≥60min;

[0025] The rolling environment simulation method is specifically:

[0026] Rolling ±45°, period 5-15s, test duration ≥60min;

[0027] Pitching ±10°, period 3-10s, test duration ≥60min.

[0028] The beneficial effects of the present application are:

[0029] The rolling and pitching environment simulation test bed of the present application is mainly used for simulating the rolling environment of a ship, is a high-performance physical simulation test equipment integrating machine, electricity, liquid and control, and can simulate the rolling motion posture of a ship under different sea conditions. The rolling and pitching environment simulation test bed realizes the freedom motion of rolling and pitching through program control, and can be hydraulically locked at any given posture. The conventional gear transmission device test bed located on land can be moved to the rolling and pitching environment simulation test bed to carry out tests, and simulate the environmental conditions in sea conditions. The ship rolling motion can be simulated according to the sine spectrum or random recording spectrum; the test bed has high control precision and is easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a perspective structural schematic view of a ship gear transmission device rolling and pitching environment simulation test bed of the present application.

[0031] Figure 2 is a schematic view of a control system of a ship gear transmission device rolling and pitching environment simulation test bed of the present application.

[0032] Figure 3 is a working schematic view of a ship gear transmission device rolling and pitching environment simulation test bed of the present application when carrying out tests.

[0033] Figure 4 is a first plane schematic view of a ship gear transmission device rolling and pitching environment simulation test bed of the present application.

[0034] Figure 5 is a second plane schematic view of a ship gear transmission device rolling and pitching environment simulation test bed of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the examples of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] DETAILED DESCRIPTION Figures 1 to 5 The present embodiment is a ship gear transmission device roll and pitch environment simulation test bench, which comprises an upper platform 1, a hooke joint 2, a roll hydraulic cylinder 3, a pitch hydraulic cylinder 4 and a base 5. Figure 3 A coordinate system is arranged in the base 5.

[0037] The upper platform 1 is installed on the base 5 through the hooke joint 2, and the upper platform 1 is connected with the base 5 through the pitch hydraulic cylinder 4 at one side end in the X-axis direction, and the upper platform 1 is connected with the base 5 through the roll hydraulic cylinder 3 at one side end in the Y-axis direction.

[0038] The roll hydraulic cylinder 3 is controlled independently to realize the rotation of the upper platform 1 around the X-axis.

[0039] The pitch hydraulic cylinder 4 is controlled independently to realize the rotation of the upper platform 1 around the Y-axis.

[0040] The roll hydraulic cylinder 3 and the pitch hydraulic cylinder 4 are controlled simultaneously to realize the compound motion of the upper platform 1 around the X-axis and the Y-axis.

[0041] The test bench considers the load characteristics and the inertia of the free surface of heavy oil in the typical test piece, and the free surface of heavy oil will cause the eccentricity of the load and a certain overturning moment. According to the kinematics and dynamics analysis of the roll and pitch simulation test bench, the force and speed of each driving hydraulic cylinder are determined. At the same time, by selecting the oil source pressure, the effective area of the hydraulic cylinder and the flow of the servo proportional valve, the requirements of driving the load can be met. The roll and pitch environment simulation test bench is mainly used for simulating the rolling environment of the ship, and is a guarantee equipment for the environmental test of the marine mechanical and electrical equipment. The roll and pitch environment simulation test bench is a high-performance physical simulation test equipment integrating machine, electricity, liquid and control, which can simulate the rolling motion posture of the ship under different sea conditions. The roll and pitch environment simulation test bench realizes the horizontal and vertical freedom motion by program control, and can be hydraulically locked at any given posture.

[0042] DETAILED DESCRIPTION Figures 1 to 5 The present embodiment is different from the first embodiment in that the roll hydraulic cylinder 3 is connected with one side end of the upper platform 1 in the Y-axis direction in a hinged manner, and the roll hydraulic cylinder 3 is connected with the base 5 in a hinged manner. The other components and connection modes are the same as those of the first embodiment.

[0043] DETAILED DESCRIPTION Figures 1 to 5 The present embodiment is different from the first embodiment in that the pitch hydraulic cylinder 4 is connected with one side end of the upper platform 1 in the X-axis direction in a hinged manner, and the pitch hydraulic cylinder 4 is connected with the base 5 in a hinged manner. The other components and connection modes are the same as those of the first embodiment or the second embodiment.

[0044] Specific implementation four: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises a first servo valve, and the extension and retraction of the roll hydraulic cylinder 3 is controlled by the first servo valve. The other components and connection modes are the same as any one of the first to third embodiments.

[0045] Specific implementation five: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises a second servo valve, and the extension and retraction of the pitch hydraulic cylinder 4 is controlled by the second servo valve. The other components and connection modes are the same as any one of the first to fourth embodiments.

[0046] Specific implementation six: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises an optical encoder, which is installed at the hinge shaft of the hooke joint 2, and the angular displacement of the upper platform 1 is measured by the optical encoder. The other components and connection modes are the same as any one of the first to fifth embodiments.

[0047] Specific implementation seven: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises locking pull rods, and the upper platform 1 is kept horizontal by the two locking pull rods. The other components and connection modes are the same as any one of the first to sixth embodiments.

[0048] Specific implementation eight: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises two roll hydraulic cylinders 3, which are arranged at the two ends of the upper platform 1 along the Y-axis direction. The roll hydraulic cylinder 3 can be provided with two, and the simulation effect is improved by the differential of the two roll hydraulic cylinders 3. The other components and connection modes are the same as any one of the first to seventh embodiments.

[0049] Specific implementation nine: combination Figures 1 to 5 The difference between this embodiment and the first embodiment is that the first embodiment further comprises a task management unit, a servo control unit, an oil source control unit, a hydraulic source and a roll-pitch environmental simulation test bench;

[0050] The task management unit is provided with a computer, and the computer runs a system in which software is installed. The software issues instructions to control the start and pressurization of the hydraulic source, and the task management unit transmits control instructions to the servo control unit through Ethernet;

[0051] The servo control unit is used to receive the control instruction of the task management unit, and drive the upper platform 1 to move; the servo control unit is used to receive the angular displacement signal of the upper platform 1 fed back by the photoelectric encoder at the hooke joint 2 of the test bench, and send the signal to the task management unit;

[0052] The oil source control unit is used to receive the hydraulic control instruction of the task management unit, and control the operation state of the hydraulic source through the oil source control unit;

[0053] The hydraulic source is used to provide hydraulic power for the roll and pitch environment simulation test bench;

[0054] The roll and pitch environment simulation test bench is used to simulate two-degree-of-freedom roll and pitch environment.

[0055] When the system is not working, the upper platform is kept horizontal by the two locking pull rods. When the system is powered on, the system control software on the task management unit is started after the control system is started. The hydraulic source is started and pressurized through the system control software, at this time the system drive hydraulic cylinder is in the position closed loop state, and the locking pull rod will be automatically unlocked. Then the degree of freedom control instruction of the swing table can be input through the system control software, the control instruction is transmitted to the servo control unit by the task management unit through Ethernet, and the servo control computer controls the hydraulic cylinder to drive the upper platform to move in real time. The angular displacement of the upper platform is measured in real time by the high-precision photoelectric encoder installed at the hooke joint hinge shaft, and is fed back to the motion servo control computer. Thus the high-precision attitude control of the swing table is realized. The roll and pitch simulation table not only can realize single-degree-of-freedom motion, but also can realize two-degree-of-freedom compound motion, so as to realize the simulation of the swing motion attitude of the ship in different sea conditions.

[0056] Specific implementation manner ten: ​ In this embodiment, an experimental method based on the ship gear transmission roll and pitch environment simulation test bench according to any one of claims 1 to 8 is described, which includes a pitch environment simulation method and a roll environment simulation method:

[0057] The pitch environment simulation method specifically includes:

[0058] The upper platform 1 is tilted by ± 45°, and the upper platform 1 is tilted by ± 10°, and the test duration is greater than or equal to 60 min;

[0059] The roll environment simulation method specifically includes:

[0060] The upper platform is rolled by ± 45° with a period of 5-15 s, and the test duration is greater than or equal to 60 min; the period is preferably 8 s,

[0061] The upper platform is rolled by ± 10° with a period of 3-10 s, and the test duration is greater than or equal to 60 min; the period is preferably 4 s.

[0062] The simulation ship rocking motion can be performed according to a sine spectrum or a random recording spectrum; the test bed has high control precision and is convenient to operate.

[0063] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ship gear transmission device tilting environment simulation test bench, characterized in that... It includes an upper platform (1), a Hooke hinge (2), a tilting hydraulic cylinder (3), a pitching hydraulic cylinder (4), and a base (5); The upper platform (1) is mounted on the base (5) via a Hooke hinge (2). The upper platform (1) is connected to the base (5) on one side along the X-axis via a pitching hydraulic cylinder (4). The upper platform (1) is connected to the base (5) on one side along the Y-axis via a tilting hydraulic cylinder (3). The extension and retraction of the tilting hydraulic cylinder (3) is controlled separately to realize the rotation of the upper platform (1) around the X-axis; The extension and retraction of the pitching hydraulic cylinder (4) is controlled separately to realize the rotation of the upper platform (1) around the Y-axis; Simultaneously control the extension and retraction of the tilting hydraulic cylinder (3) and the swaying hydraulic cylinder (4) to realize the composite motion of the upper platform (1) around the X-axis and Y-axis.

2. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that, The tilting hydraulic cylinder (3) is connected to the upper platform (1) on one side along the Y-axis by a hinge connection, and the tilting hydraulic cylinder (3) is connected to the base (5) by a hinge connection.

3. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that, The longitudinal hydraulic cylinder (4) is connected to the upper platform (1) on one side along the X-axis by a hinge connection, and the longitudinal hydraulic cylinder (4) is connected to the base (5) by a hinge connection.

4. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that... It also includes a first servo valve, through which the extension and retraction of the tilting hydraulic cylinder (3) is controlled.

5. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that... It also includes a second servo valve, through which the extension and retraction of the pitch hydraulic cylinder (4) is controlled.

6. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that... It also includes an optical encoder, which is installed at the hinge of the Hooke hinge (2) and measures the angular displacement of the upper platform (1) by means of the optical encoder.

7. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that... It also includes locking levers, which keep the upper platform (1) level by means of two locking levers.

8. The ship gear transmission device tilting environment simulation test bench according to claim 1, characterized in that, There are two tilting hydraulic cylinders (3), which are respectively arranged at the two ends of the upper platform (1) along the Y-axis.

9. A control system, characterized in that, The control system is based on a ship gear transmission device roll environment simulation test bench according to any one of claims 1 to 8, including a task management unit, a servo control unit, an oil source control unit, a hydraulic source, and a roll environment simulation test bench; The task management unit is equipped with a computer, and the computer system has software installed. The software issues commands to control the hydraulic source to start and pressurize. The task management unit transmits the control commands to the servo control unit via Ethernet. The servo control unit is used to receive control commands from the task management unit and drive the upper platform (1) to move; the servo control unit is used to receive the angular displacement signal of the upper platform (1) fed back by the photoelectric encoder at the Hooke joint (2) of the test bench and send it to the task management unit; The hydraulic power supply control unit is used to receive hydraulic control commands from the task management unit and control the operating status of the hydraulic power supply. The hydraulic power source is used to provide hydraulic power for the tilting environment simulation test bench; The tilting environment simulation test bench is used to simulate a two-degree-of-freedom tilting environment.

10. A test method, said test method being based on a ship gear transmission device roll environment simulation test bench according to any one of claims 1 to 8, comprising a tilt environment simulation method and a sway environment simulation method: The specific method for simulating tilted environments is as follows: The upper platform (1) is tilted by +45° or -45°, the upper platform (1) is tilted by +10° or -10°, and the test duration is ≥60min; The specific method for simulating a swaying environment is as follows: The platform is swayed ±45°, with a cycle of 5–15 seconds, and the test duration is ≥60 minutes. The platform is swayed ±10°, with a cycle of 3 to 10 seconds, and the test duration is ≥60 minutes.

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