Damping device and control method thereof

Abstract

The invention relates to the technical field of vibration reduction, in particular to a vibration reduction device and a control method thereof, and aims to solve the problem that an existing vibration isolator cannot avoid shaking of a main body to be subjected to vibration reduction due to shaking of a shell. In order to achieve the purpose, the vibration reduction device comprises a shell, a body to be subjected to vibration reduction and an automatic balancing device, the automatic balancing device is correspondingly connected with the shell and the body to be subjected to vibration reduction, when the shell does not shake, the state of the automatic balancing device is kept unchanged, so that the body to be subjected to vibration reduction is kept still relative to the shell, and when the shell shakes, the automatic balancing device is kept still relative to the shell. The automatic balancing device adjusts the self state according to the shaking of the shell, so that the automatic balancing device can reduce the influence of the shaking of the shell on the to-be-damped main body, and the shaking angle of the to-be-damped main body relative to the horizontal plane is smaller than or equal to a preset angle threshold value; the situation that the main body to be subjected to vibration reduction shakes at a large angle due to shaking of the shell is avoided, and therefore the stability of the main body to be subjected to vibration reduction is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction, and in particular relates to a vibration reduction device and a control method thereof. Background Art

[0002] Ships are often impacted by waves in the ocean. When impacted, the hull will tilt to a certain extent, and the marine air conditioner will also tilt with the hull. In this case, the stability of the internal structure of the marine air conditioner is put to the test. The compressor, as the power center of the marine air conditioning system, must be able to ensure its normal operation when the hull tilts and shakes, so as to provide stable power support for the marine air conditioning system. Otherwise, it will cause insufficient power or instability, which will indirectly affect the circulation of the refrigerant. If severe shaking or vibration occurs, it may also affect the normal operation of the system and the cooling or heating effect.

[0003] In order to solve the above problems, elastic vibration isolators are usually installed at the bottom corners of the shell where the compressor is installed, so as to utilize the elasticity of the vibration isolators themselves to cushion the impact force exerted on the shell by the shaking hull. However, in actual application, although the vibration isolators themselves have a certain vibration reduction function, during the shaking of the hull, the connection between the vibration isolator and the shell will still shake with the shaking of the hull, which will still cause the compressor to shake at a larger angle, so that the vibration isolators cannot prevent the shaking of the hull from affecting the normal operation of the air-conditioning system and the cooling or heating effects.

[0004] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to solve the above problems in the prior art, that is, to solve the problem that the vibration isolator provided in the prior art cannot avoid the vibration of the compressor caused by the vibration of the hull.

[0006] In a first aspect, the present invention provides a vibration reduction device, which is used to reduce vibration of a subject to be reduced, and the vibration reduction device comprises:

[0007] A housing, which covers the exterior of the body to be damped; and

[0008] An automatic balancing device is correspondingly connected to the shell and the main body to be damped, and is configured such that when the shell is not shaking, the state of the automatic balancing device itself remains unchanged so that the main body to be damped remains motionless relative to the shell, and is also configured such that when the shell shakes, the automatic balancing device adjusts its own state according to the shaking of the shell, so that the automatic balancing device can reduce the impact of the shaking of the shell on the main body to be damped, so that the shaking angle of the main body to be damped relative to the horizontal plane is less than or equal to a preset angle threshold.

[0009] In the preferred technical solution of the above vibration reduction device, the automatic balancing device comprises:

[0010] a driving unit configured to provide power to the automatic balancing device according to the shaking of the housing; and

[0011] A balancing mechanism is connected to the shell, the main body to be damped and the driving unit, and is configured such that when the shell shakes, the balancing mechanism, under the action of the driving unit, causes the main body to be damped to shake relative to a horizontal plane at an angle less than or equal to a preset angle threshold.

[0012] In the preferred technical solution of the above vibration reduction device, the balancing mechanism includes:

[0013] A plurality of hydraulic transmission devices, each of the hydraulic transmission devices having a corresponding outer shell and a hydraulic rod, each of the outer shells being connected to the housing, each of the hydraulic rods being connected to the subject to be damped, and each of the hydraulic transmission devices being configured to extend or retract under the action of the drive unit so as to achieve a shaking angle of the subject to be damped relative to a horizontal plane that is less than or equal to a preset angle threshold.

[0014] In the preferred technical solution of the above vibration reduction device, the balancing mechanism further comprises:

[0015] A plurality of buffer structures, the first ends of which are connected one-to-one with the plurality of hydraulic transmission devices, and the second ends of which are respectively connected with the main body to be damped, are configured to reduce the impact force on the main body to be damped through the corresponding buffer structures when the shell shakes, so as to improve the stability of the main body to be damped.

[0016] In the preferred technical solution of the above vibration reduction device, each of the buffer structures comprises:

[0017] A connecting portion connected to a housing of the hydraulic transmission device;

[0018] A guide rod, a first end of which is slidably connected to the connecting portion, a second end of which is rotatably connected to the main body to be damped, and is configured to slide along the extension and retraction direction of the hydraulic rod under the action of the connecting portion; and

[0019] The two ends of the buffer spring are respectively fixedly connected to the hydraulic rod and the guide rod, so that when the shell shakes, the buffer spring plays a buffering role on the main body to be damped.

[0020] In the preferred technical solution of the above vibration reduction device, there are multiple drive units, and the multiple drive units correspond one-to-one to the multiple hydraulic transmission devices, and each of the drive units includes:

[0021] A driving member connected to the corresponding hydraulic transmission device and configured to provide a telescopic force for the hydraulic transmission device;

[0022] a first detection unit, which is disposed at a connection position between the housing and the corresponding hydraulic rod and is configured to detect a first pulling force or a first pressing force applied by the housing to the hydraulic rod along a telescopic direction; and

[0023] A control unit is correspondingly connected to the driving member and the first detection unit, and is configured to adjust the telescopic force according to the first pulling force or the first pressing force.

[0024] In the preferred technical solution of the above vibration reduction device, each of the driving units further comprises:

[0025] A corresponding second detection unit is arranged between the corresponding buffer spring and the corresponding hydraulic rod and / or the corresponding buffer spring and the corresponding guide rod, and is connected to the corresponding control unit, and is configured to measure the second tension or second pressure between the buffer spring and the hydraulic rod, so that the control unit adjusts the telescopic force according to the second tension and the first tension or the second pressure and the first pressure.

[0026] In the preferred technical solution of the above vibration reduction device, each of the driving members comprises:

[0027] a corresponding hydraulic pump configured to provide constant hydraulic energy to the hydraulic oil of the corresponding hydraulic transmission device; and

[0028] The corresponding electro-hydraulic control valve is respectively connected to the oil inlet and oil outlet of the corresponding hydraulic transmission device and the corresponding control unit, and is configured to adjust the telescopic force of the corresponding hydraulic transmission device through the corresponding control unit.

[0029] In a second aspect, the present invention further provides a control method for a vibration reduction device, the control method comprising the following steps:

[0030] Obtaining a first pulling force or a first pressing force respectively applied by the housing to the plurality of hydraulic rods along the extension and retraction direction;

[0031] The telescopic force of the corresponding hydraulic rod is adjusted according to the first pulling force or the first pressure, so as to reduce the change of the force value of the main body to be damped at the connection between the corresponding hydraulic rod and the main body to be damped, so that the acceleration value generated at the connection between the corresponding hydraulic rod and the main body to be damped is zero or close to zero, so that the angle of the main body to be damped relative to the horizontal plane under the action of the automatic balancing device is less than or equal to the preset angle threshold.

[0032] In the preferred technical solution of the control method of the above-mentioned vibration reduction device, the control method comprises the following steps:

[0033] Acquire a first pulling force or a first pressing force respectively applied by the shell to the hydraulic rod along the extension and retraction direction;

[0034] Obtaining a second tension or a second pressure between the buffer spring and the corresponding hydraulic rod;

[0035] The telescopic force of the hydraulic transmission device is respectively adjusted according to the first pulling force and the corresponding second pulling force or the first pressure and the corresponding second pressure to reduce the change in the force value of the main body to be damped at the connection between the corresponding guide rod and the main body to be damped, so that the acceleration value generated at the connection between the corresponding guide rod and the main body to be damped is zero or close to zero, so that the angle of the main body to be damped shaking relative to the horizontal plane under the action of the automatic balancing device is less than or equal to the preset angle threshold.

[0036] When adopting the above technical scheme, the vibration reduction device of the present invention includes a shell, a main body to be vibration reduced and an automatic balancing device. The main body to be vibration reduced is connected to the shell through the automatic balancing device, and is constructed so that when the shell is not shaking, the main body to be vibration reduced remains motionless relative to the shell under the action of the automatic balancing device. It is also constructed so that when the shell shakes, the automatic balancing device adjusts its own state according to the shaking of the shell, so that the shaking angle of the main body to be vibration reduced relative to the horizontal plane under the action of the automatic balancing device is less than or equal to a preset angle threshold, so as to avoid the situation where the main body to be vibration reduced shakes at a larger angle due to the shaking of the shell, thereby improving the stability of the main body to be vibration reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0038] Figure 1 It is a schematic structural diagram of the vibration reduction device of the present invention.

[0039] Figure 2 It is a schematic structural diagram of an automatic balancing device of a vibration reduction device according to an embodiment of the present invention.

[0040] Figure 3 It is a structural schematic diagram of an automatic balancing device of a vibration reduction device according to another embodiment of the present invention.

[0041] Figure 4 It is a schematic diagram of the connection structure between the hydraulic transmission device and the housing of the vibration reduction device of the present invention.

[0042] Figure 5 It is a main flow chart of a control method of a vibration reduction device according to an embodiment of the present invention.

[0043] Figure 6 It is a main flow chart of a control method of a vibration reduction device according to another embodiment of the present invention.

[0044] List of reference numerals:

[0045] 100. Vibration reduction device; 1. Shell; 2. Compressor; 3. Automatic balancing device; 31. Balancing mechanism; 311. Hydraulic transmission device; 3111. Hydraulic rod; 3112. Shell of hydraulic transmission device; 312. Buffer structure; 3121. Connecting part; 3122. Guide rod; 3123. Buffer spring; 32. Driving unit; 321. First detection unit; 322. Driving member; 3221. Electro-hydraulic control valve; 3222. Hydraulic pump; 323. Control unit; 324. Second detection unit. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific applications. For example, although the description is described in conjunction with a marine air conditioner, it is obvious that it can also be applied to other equipment such as automobiles or airplanes that require a vibration reduction device.

[0047] It should be noted that, in the description of the present invention, the terms "middle", "upper", "lower", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are merely for the convenience of description and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Figure 1 It is a schematic structural diagram of a vibration reduction device according to an embodiment of the present invention. Figure 2It is a schematic structural diagram of an automatic balancing device of a vibration reduction device according to an embodiment of the present invention. Figure 3 It is a schematic structural diagram of an automatic balancing device of a vibration reduction device according to another embodiment of the present invention. Figure 4 It is a schematic diagram of the connection structure between the hydraulic transmission device and the housing of the vibration reduction device according to one embodiment of the present invention. Figure 5 This is a main flow chart of one embodiment of a control method of a vibration damping device according to the present invention. Figure 6 This is a main flow chart of another embodiment of the control method of the vibration damping device of the present invention.

[0050] like Figure 1 See also Figure 2 and Figure 3 , in order to solve the existing problem of installing an elastic vibration isolator between the bottom corner of the compressor housing and the hull, so that when the elasticity of the vibration isolator itself is used to buffer the impact force exerted on the housing by the shaking hull, due to the limited buffering capacity of the vibration isolator itself, when the hull shakes with a small amplitude and low frequency, the vibration isolator can play a certain buffering role, but when the hull shakes with a large amplitude or a high frequency, this will cause the vibration reduction function of the vibration isolator to fail, so that the compressor will still have a problem of shaking at a large angle due to the shaking of the hull. The present invention provides a vibration reduction device 100, which includes a housing 1, a compressor 2 and an automatic balancing device 3. The housing 1 is fixedly installed inside a cabin (not shown), and there is an installation position inside the housing 1 so that the parts of the air conditioner can be installed inside the housing 1, and the housing 1 can be placed in a suitable position inside the cabin, which facilitates the installation requirements of the air conditioner. Specifically, the compressor 2 is connected to the housing 1 through the automatic balancing device 3, so that the compressor 2 is installed inside the housing 1 through the automatic balancing device 3. The automatic balancing device 3 is configured to keep its own state unchanged when the housing 1 is not shaking, so that the compressor 2 remains motionless relative to the housing 1, and is also configured to adjust its own state according to the shaking of the housing 1 when the housing 1 is shaking, so that the automatic balancing device 3 can reduce the impact of the shaking of the housing 1 on the compressor 2, so that the shaking angle of the vibration-reduced body relative to the horizontal plane is less than or equal to the preset angle threshold. This avoids the situation where the compressor 2 shakes at a large angle due to the shaking of the housing 1, causing the compressor 2 to be underpowered or unstable, resulting in the cooling and heating effects of the air conditioner being affected.

[0051] It should be noted that the preset angle threshold can be determined by the designer based on experience, experiments, calculations, etc. For example, the preset angle threshold is 0-2°, wherein the angle threshold can be the angle with any direction of the horizontal plane. Moreover, although the range of the angle threshold described above is 0-2°, this is not restrictive. Those skilled in the art can determine the size of the angle range according to specific needs, such as to ensure that the cooling and heating effects of the air conditioner are not affected when the shell 1 shakes with the hull. Therefore, the size of the angle threshold can also be determined according to the parameters of the compressor 2.

[0052] Furthermore, despite the above combination Figure 1 and Figure 2 The shell 1 is described as being installed in the cabin, but this is not restrictive, and those skilled in the art can also install the shell 1 outside the cabin according to specific needs.

[0053] In addition, in the process of implementing the present invention, the inventors also found that when the prior art uses elastic vibration isolators to reduce vibration of the compressor 2 located inside the shell 1, the elastic vibration isolators will resonate with the continuously shaking shell 1, which will cause the vibration of the compressor 2 to be more seriously affected.

[0054] The present invention connects the compressor 2 to the shell 1 through the automatic balancing device 3, so that the automatic balancing device 3 can automatically adjust its own state according to the shaking of the shell 1, and absorb the pressure or tension applied to the compressor 2 due to the shaking of the shell 1, so that the compressor 2 does not shake under the action of the automatic balancing device 3 or the shaking angle is less than or equal to a preset angle threshold, thereby preventing the compressor 2 from being affected by the shaking of the shell 1 or the impact is within an acceptable range.

[0055] As a possible implementation, Figure 1 and Figure 2 As shown, the automatic balancing device 3 includes a driving unit 32 and a balancing mechanism 31. The driving unit 32 is configured to provide power to the automatic balancing device 3 according to the shaking of the housing 1. The balancing mechanism 31 is connected to the housing 1, the compressor 2 and the driving unit 32, and the balancing mechanism 31 is configured to make the angle of the compressor 2 relative to the horizontal plane less than or equal to a preset angle threshold when the housing 1 shakes.

[0056] As a possible implementation, Figure 1 and Figure 2As shown, the balancing mechanism 31 includes a plurality of hydraulic transmission devices 311, the housings 3112 of the plurality of hydraulic transmission devices are respectively rotatably connected to the housing 1, the hydraulic rods 3111 of the plurality of hydraulic transmission devices 311 are respectively connected to the compressor 2, and the hydraulic transmission devices 311 are configured to extend or retract under the action of the drive unit 32, so that when the housing 1 shakes, the shaking angle of the compressor 2 relative to the horizontal plane is less than or equal to a preset angle threshold. Preferably, as Figure 1 As shown, in a specific embodiment of the present invention, the shell 1 is a rectangular parallelepiped, based on which the outer shells 3112 of the eight hydraulic transmission devices are rotationally connected to the eight corners of the shell 1, and the hydraulic rods 3111 of the eight hydraulic transmission devices 311 are rotationally connected to the compressor 2, so that the compressor 2 can shake at an angle less than or equal to a preset angle threshold relative to the horizontal plane under the action of the extension or retraction of the hydraulic rods 3111 of the eight hydraulic transmission devices 311.

[0057] Preferably, Figure 3 As shown, in the specific implementation of the present invention, the housing 3112 of each hydraulic transmission device is provided with a connecting rod, and each connecting rod is connected to the housing 1 through a universal coupling, so that the housing 3112 of the hydraulic transmission device can be rotatably connected to the housing 1 in any direction. Similarly, in the specific implementation of the present invention, the hydraulic rod 3111 of the hydraulic transmission device 311 is rotatably connected to the compressor 2 through a universal coupling, and the specific connection method is not repeated here. Through the above connection method, when the housing 1 shakes, the hydraulic transmission device 311 can rotate adaptively with the extension or retraction of the hydraulic rod 3111 under the action of the universal coupling, so that the hydraulic transmission device 311 is only subjected to the tension or pressure in the extension or retraction direction of the hydraulic rod 3111 in addition to its own gravity. Based on this, the end face of each connecting rod close to the coupling is connected to the universal coupling through the first detection unit 321, and the side wall of the connecting rod is slidably connected to the inner wall of the universal coupling, so that the first detection unit 321 can detect the first tension or first pressure acting on the corresponding connecting rod by the shell 1 along the extension direction.

[0058] It should be noted that although the above combination Figure 1 The shell 1 is described as a rectangular parallelepiped, but this is not restrictive, and those skilled in the art may also configure the shell 1 to be a shell 1 of other shapes such as a sphere or a cube, as long as the compressor 2 can be installed inside the shell 1 through the hydraulic transmission device 311.

[0059] In addition, although the above combination Figure 1The described balancing mechanism 31 includes eight hydraulic transmission devices 311, and the drive unit 32 is used to control the extension and retraction of the eight hydraulic transmission devices 311 to reduce the vibration of the compressor 2, but this is not restrictive. Those skilled in the art can also use other numbers of hydraulic transmission devices 311 according to specific use needs. It is only necessary to set the hydraulic transmission devices 311 so that the compressor 2 can make the angle of the compressor 2 relative to the horizontal plane less than or equal to the preset angle threshold when the shell 1 shakes. In addition, although the above combination Figure 1 The described balancing mechanism 31 is a hydraulic transmission device 311, but this is not restrictive. Those skilled in the art can also set the balancing mechanism 31 to an electric transmission device or a pneumatic transmission device as needed. Obviously, the balancing mechanism 31 can also be set to a transmission device with a gear rack mechanism, as long as the angle of the compressor 2 relative to the horizontal plane can be less than or equal to a preset angle threshold when the housing 1 shakes under the control of the drive unit 32.

[0060] As a possible implementation, Figure 3 As shown, the balancing mechanism 31 also includes a plurality of buffer structures 312, which are connected to the hydraulic transmission device 311 one by one, and are configured to reduce the impact force of the corresponding hydraulic transmission device 311 through the plurality of buffer structures 312 when the housing 1 shakes, so as to improve the stability of the connection between each hydraulic rod 3111 and the compressor 2. For example, when the housing 1 shakes suddenly and the shaking speed is relatively high, the buffer structure 312 correspondingly connected to the hydraulic transmission device 311 performs mechanical buffering, and then the corresponding driving unit 32 controls the extension or retraction of the corresponding hydraulic transmission device 311 according to the shaking of the housing 1 to perform active vibration reduction, so as to avoid the compressor 2 from shaking at a large angle due to the insufficient response speed of the automatic balancing device 3. It can also avoid the situation where the vibration reduction body to be reduced resonates with the housing 1 under the action of the spring because only the spring is used for vibration reduction.

[0061] As a possible implementation, each buffer structure 312 includes a connecting portion 3121, a guide rod 3122 and a buffer spring 3123. The connecting portion 3121 is connected to the housing 3112 of the hydraulic transmission device in a one-to-one correspondence. The first end of each guide rod 3122 is slidably connected to the corresponding connecting portion 3121, and the second end of each guide rod 3122 is respectively connected to the compressor 2, and is configured to slide along the extension and retraction direction of the corresponding hydraulic rod 3111 under the action of the connecting portion 3121. The two ends of the buffer spring 3123 are respectively fixedly connected to the corresponding hydraulic rod 3111 and the guide rod 3122, so that when the housing 1 shakes, the buffer spring 3123 plays a buffering role on the compressor 2. So that when the hydraulic rod 3111 extends or contracts due to the sudden shaking of the housing 1, the corresponding buffer spring 3123 plays a buffering role. Specifically, as Figure 3 As shown, in the specific implementation of the present invention, the buffer structure 312 includes a sleeve and a guide rod 3122 slidably connected inside the sleeve, the end of the guide rod 3122 close to the buffer spring 3123 is slidably connected to the inner wall of the sleeve, and the end of the guide rod 3122 away from the buffer spring 3123 passes through the sleeve and is connected to the compressor 2. The buffer structure 312 also includes a connecting disk, which is sleeved on the hydraulic rod 3111 and fixedly connected to the hydraulic rod 3111. At this time, the buffer spring 3123 sleeves are respectively fixedly connected to the connecting disk and the end of the guide rod 3122 close to the buffer spring 3123, so that when the hydraulic rod 3111 is uncontrollably extended or retracted due to the sudden shaking of the housing 1, the corresponding buffer spring 3123 plays a buffering role, thereby improving the vibration reduction performance of the hydraulic transmission device 311. Preferably, the guide rod 3122 is coaxially arranged with the hydraulic rod 3111 , so that the hydraulic rod 3111 and the guide rod 3122 can better transmit thrust or tension through the buffer spring 3123 .

[0062] As a possible implementation, Figure 2 As shown, the driving unit 32 includes a driving member 322, a first detection unit 321 and a control unit 323. The driving member 322 is connected to a plurality of hydraulic transmission devices 311 in a one-to-one correspondence, and is configured to provide a telescopic force for the corresponding hydraulic transmission device 311. The first detection unit 321 is correspondingly arranged at the connection between the housing 1 and the hydraulic rod 3111, and is configured to detect the first tension or first pressure of the housing 1 acting on the corresponding hydraulic rod 3111 along the telescopic direction. The control unit 323 is connected to the driving member 322 and the first detection unit 321 in a one-to-one correspondence, and is configured to adjust the telescopic force of the corresponding hydraulic transmission device 311 according to the corresponding first tension or first pressure, so that the telescopic force applied by the corresponding hydraulic transmission device 311 to the corresponding hydraulic rod 3111 interacts with the first tension or first pressure applied by the housing 1 to the corresponding hydraulic rod 3111, so as to reduce the influence of the shaking of the housing 1 on the compressor 2, so that when the housing 1 shakes, the angle of the shaking of the compressor 2 relative to the horizontal plane under the action of the automatic balancing device 3 is less than or equal to the preset angle threshold.

[0063] It should be noted that, in a specific embodiment of the present invention, the first detection unit 321 may adopt a mechanical sensor having the function of measuring pressure and tension, such as a load sensor and a tension sensor or a piezoresistive sensor.

[0064] In addition, it should be understood by those skilled in the art that, since the setting of the control unit 323 is only for illustrating the functional unit corresponding to the vibration reduction device 100 of the present invention, the physical device corresponding to the control unit 323 may be the processor itself, or a part of the software in the processor, a part of the hardware, or a part of the combination of software and hardware. Therefore, the number of control units 323 is only schematic. It can be understood by those skilled in the art that the control unit 323 can be adaptively split according to actual conditions. The specific splitting form of the control unit 323 will not cause the technical solution to deviate from the principle of the present invention, and therefore, the technical solutions after the splitting will fall within the protection scope of the present invention.

[0065] As a possible implementation, Figure 3 As shown, each driving unit 32 also includes a corresponding second detection unit 324, which is correspondingly arranged between the buffer spring 3123 and the hydraulic rod 3111, and is correspondingly connected to the control unit 323, and is constructed to correspondingly measure the second tension or second pressure between the buffer spring 3123 and the hydraulic rod 3111, so that the control unit 323 adjusts the telescopic force of the corresponding hydraulic rod 3111 according to the corresponding second tension or second pressure and the corresponding first tension or first pressure. In this way, when the control unit 323 adjusts the telescopic force of the corresponding hydraulic rod 3111, the telescopic force of the hydraulic rod 3111 can be adjusted according to the second tension or second pressure corresponding to the spring, so as to reduce the influence of the spring compression or extension on the telescopic force of the hydraulic rod 3111 of the corresponding hydraulic transmission device 311, thereby making the shaking angle of the compressor 2 smaller, so that the maximum value and minimum value of the preset angle threshold range can be reduced, so that the control unit 323 can adjust the telescopic force of the hydraulic rod 3111 more accurately, so that the compressor 2 can be more stable.

[0066] It should be noted that although the above combination Figure 3 The second detection unit 324 is described as being arranged between the buffer spring 3123 and the hydraulic rod 3111, but this is not restrictive. Obviously, the second detection unit 324 can also be arranged between the buffer spring 3123 and the guide rod 3122, or simultaneously between the buffer spring 3123 and the hydraulic rod 3111 and between the buffer spring 3123 and the guide rod 3122, as long as the pressure or tension between the buffer spring 3123 and the hydraulic rod 3111 can be detected by the second detection unit 324.

[0067] In addition, in a specific embodiment of the present invention, the second detection unit 324 may adopt a mechanical sensor having the function of measuring pressure and tension, such as a load sensor and a tension sensor or a piezoresistive sensor.

[0068] As a possible implementation, Figure 2 As shown, each driving member 322 includes a corresponding hydraulic pump 3222 and a corresponding electro-hydraulic control valve 3221. The hydraulic pump 3222 is connected to the corresponding hydraulic transmission device 311, and is configured to provide constant hydraulic energy for the hydraulic oil of the corresponding hydraulic transmission device 311. The electro-hydraulic control valve 3221 is respectively connected to the oil inlet and oil outlet of the corresponding hydraulic transmission device 311 and the corresponding control unit 323, and is configured to adjust the corresponding electro-hydraulic control valve 3221 through each control unit 323 to adjust the telescopic force of the corresponding hydraulic rod 3111. Preferably, the electro-hydraulic control valve 3221 adopts a hydraulic reversing valve, so that the control unit 323 adjusts the opening size and direction of the corresponding hydraulic reversing valve to adjust the pressure of the oil inlet and oil outlet of the corresponding hydraulic transmission device 311, thereby correspondingly adjusting the telescopic force of the hydraulic rod 3111.

[0069] As a possible implementation, Figure 1 As shown, the shell 1 includes a sealed shell 1, and the shell 1 has a sealed cavity inside, and the sealed cavity is filled with inert gas to protect the compressor 2 from corrosion by gaseous water containing salt, thereby improving the service life of the compressor 2. The outer wall of the shell 1 is coated with an anti-corrosion coating to increase the corrosion resistance of the shell 1 to improve the service life of the shell 1. Preferably, the anti-corrosion coating includes an anti-corrosion inner layer and an anti-fouling coating. The anti-corrosion inner layer is applied to the outer surface of the shell 1 and / or the enhanced heat exchange device, and the corrosion rate of gaseous water or seawater containing salt water on the shell 1 and / or the enhanced heat exchange device is reduced by the anti-corrosion inner layer. The anti-fouling coating is applied to the outer surface of the anti-corrosion inner layer of the shell 1, and the anti-fouling coating makes it difficult for fouling organisms in the ocean air or seawater to adhere to the surface of the anti-fouling coating, or the attachment is not firm, so that the fouling organisms attached to the surface of the anti-fouling coating are removed from the surface of the anti-fouling coating under the action of air flow or seawater flow.

[0070] The working principle of the vibration reduction device 100 of the present invention is that the compressor 2 is connected to the eight corners of the shell 1 through eight balancing mechanisms 31, so that the compressor 2 can be installed inside the shell 1 under the joint action of the eight balancing mechanisms 31, wherein the four balancing mechanisms 31 below the compressor 2 play a supporting role, and the four balancing mechanisms 31 above the compressor 2 play a balancing role. Specifically, when the shell 1 is not shaking, the telescopic force (outward thrust or inward pulling force) of the eight hydraulic rods 3111 is equal to the first pulling force or first pressure of the shell 1 acting on the corresponding eight hydraulic transmission devices' shells 3112, that is, the telescopic force of the eight hydraulic rods 3111 is equal to the first pulling force or first pressure of the shell 1 acting on the corresponding eight hydraulic transmission devices' shells 3112, so that the position of the connection point of the eight hydraulic rods 3111 and the corresponding compressor 2 relative to the shell 1 remains unchanged. If the shell 1 changes from a non-swaying state to a shaking state along with the hull, the first tension or first pressure of the shell 1 on the outer shells 3112 of the eight hydraulic transmission devices will change, and the compressor 2 will extend or retract the hydraulic rods 3111 corresponding to the outer shells 3112 of the eight hydraulic transmission devices due to its own inertia to play a buffering role. However, although the hydraulic transmission device 311 will play a certain buffering role, the hydraulic transmission device 311 cannot completely buffer the impact force applied to itself by the shell 1 due to the shaking, which will cause acceleration at the connection point between the eight hydraulic rods 3111 and the compressor 2, which will also cause the compressor to shake. In order to avoid the situation where the angle of the compressor 2 relative to the horizontal plane is greater than the preset angle threshold due to the acceleration of the connection points between the eight hydraulic rods 3111 and the compressor 2, it is necessary to adjust the telescopic force of the eight hydraulic rods 3111 accordingly according to the pressure or tension applied to the outer shell 3112 of the hydraulic transmission device when the shell 1 shakes, so that the difference between the change value of the telescopic force of the eight hydraulic rods 3111 and the change value of the first tension or first pressure of the shell 1 applied to the outer shell 3112 of the corresponding hydraulic transmission device is equal to zero or close to zero, so that the acceleration generated at the connection points between the eight hydraulic rods 3111 and the compressor 2 is equal to zero or close to zero, so that the compressor 2 does not shake or the shaking angle is less than or equal to the preset angle threshold under the action of the automatic balancing device 3.

[0071] It should be noted that the working principle of the buffer structure 312 provided in the hydraulic transmission device 311 is similar to the working principle of the above-mentioned case where the buffer structure 312 is not provided, and will not be described in detail here.

[0072] In addition, the above-mentioned case where the shell 1 is not shaking includes the case where the shell 1 is accelerating in the same direction at a constant acceleration, that is, the acceleration magnitude and direction are unchanged. If the acceleration direction of the shell 1 does not change but the magnitude changes, it means that the resultant force applied by the shell 1 to the compressor 2 will also change. At this time, the telescopic force of the hydraulic rod 3111 can be automatically adjusted to reduce the rate of change of the acceleration of the compressor 2, that is, to reduce the rate of change of the resultant force received by the compressor 2. When the acceleration of the shell 1 is constant, the telescopic force of the hydraulic rod 3111 is adjusted again to make the change of the resultant force received by the compressor 2 smoother. Preferably, a gravity acceleration sensor is also provided inside the hull, so that when the hull does not drive the shell 1 to shake, the acceleration of the hull is detected by the gravity acceleration sensor, so that the automatic balancing device 3 adjusts the telescopic force of the hydraulic transmission device 311 according to the acceleration of the hull, so that the compressor 2 has the same acceleration as the hull, so that the position of the compressor 2 and the shell 1 remains unchanged.

[0073] See also Figure 4 , Figure 4 A flowchart showing the main steps of a control method of a vibration reduction device 100 according to an embodiment of the present invention is shown. The control method mainly includes the following steps:

[0074] S401, obtaining a first tension or a first pressure of the housing 1 acting on the extension and retraction directions of the plurality of hydraulic rods 3111;

[0075] Specifically, in a specific embodiment of the present invention, a first detection unit 321 installed at the connection between the housing 1 and the hydraulic rod 3111 obtains the first tension or first pressure exerted by the housing 1 on the hydraulic rod 3111 along the extension and retraction direction of the hydraulic rod 3111 .

[0076] S402. Adjust the telescopic force of the hydraulic rod 3111 according to the multiple first pulling forces or the first pressures to reduce the change in the force value of the compressor 2 at the connection between the multiple hydraulic rods 3111 and the compressor 2, so that the acceleration value generated at the connection between the multiple hydraulic rods 3111 and the compressor 2 is zero or close to zero, so that the angle of the compressor 2 relative to the horizontal plane under the action of the automatic balancing device 3 is less than or equal to the preset angle threshold.

[0077] See also Figure 5 , Figure 5 A flow chart showing the main steps of a control method of a vibration reduction device 100 according to another embodiment of the present invention is provided. The control method mainly includes the following steps:

[0078] S501, obtaining a first pulling force or a first pressing force of the housing 1 acting on the extension and retraction directions of the plurality of hydraulic rods 3111;

[0079] Specifically, in a specific embodiment of the present invention, the first tension or first pressure exerted by the shell 1 on the hydraulic rod 3111 along the extension and retraction direction of the hydraulic rod 3111 is acquired by the first detection unit 321 installed at the connection between the shell 1 and the hydraulic rod 3111.

[0080] S502, obtaining a second tension or a second pressure between the plurality of buffer springs 3123 and the hydraulic rod 3111;

[0081] Specifically, in a specific embodiment of the present invention, the second tension or second pressure exerted by the buffer spring 3123 on the hydraulic rod 3111 along the extension and retraction direction of the hydraulic rod 3111 is obtained by the second detection unit 324 installed between the buffer spring 3123 and the hydraulic rod 3111.

[0082] S503. Adjust the telescopic force of the hydraulic transmission device 311 according to multiple first pulling forces or first pressures and multiple second pulling forces or second pressures, so that the acceleration value generated at the connection between the multiple hydraulic rods 3111 and the compressor 2 is zero or close to zero, so that the angle of the compressor 2 relative to the horizontal plane under the action of the automatic balancing device 3 is less than or equal to a preset angle threshold.

[0083] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments may be used in any combination.

[0084] So far, the technical solutions of the present invention have been described in conjunction with the optional implementation modes shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific implementation modes. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0085] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments may be used in any combination.

[0086] So far, the technical solutions of the present invention have been described in conjunction with the optional implementation modes shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific implementation modes. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A vibration reduction device, characterized in that: The vibration reduction device is used to reduce vibration for the subject to be reduced vibration, and the vibration reduction device comprises: A housing, which covers the exterior of the body to be damped; and An automatic balancing device is correspondingly connected to the shell and the main body to be damped, and is configured such that when the shell is not shaking, the state of the automatic balancing device itself remains unchanged so that the main body to be damped remains motionless relative to the shell, and is also configured such that when the shell shakes, the automatic balancing device adjusts its own state according to the shaking of the shell, so that the automatic balancing device can reduce the impact of the shaking of the shell on the main body to be damped, so that the shaking angle of the main body to be damped relative to the horizontal plane is less than or equal to a preset angle threshold.

2. The vibration reduction device according to claim 1, characterized in that: The automatic balancing device comprises: a driving unit configured to provide power to the automatic balancing device according to the shaking of the housing; and A balancing mechanism is connected to the shell, the main body to be damped and the driving unit, and is configured such that when the shell shakes, the balancing mechanism, under the action of the driving unit, causes the main body to be damped to shake relative to a horizontal plane at an angle less than or equal to a preset angle threshold.

3. The vibration reduction device according to claim 2, characterized in that: The balancing mechanism comprises: A plurality of hydraulic transmission devices, each of the hydraulic transmission devices having a corresponding outer shell and a hydraulic rod, each of the outer shells being connected to the housing, each of the hydraulic rods being connected to the subject to be damped, and each of the hydraulic transmission devices being configured to extend or retract under the action of the drive unit so as to achieve a shaking angle of the subject to be damped relative to a horizontal plane that is less than or equal to a preset angle threshold.

4. The vibration reduction device according to claim 3, characterized in that: The balancing mechanism further comprises: A plurality of buffer structures, the first ends of which are connected one-to-one with the plurality of hydraulic transmission devices, and the second ends of which are respectively connected with the main body to be damped, are configured to reduce the impact force on the main body to be damped through the corresponding buffer structures when the shell shakes, so as to improve the stability of the main body to be damped.

5. The vibration reduction device according to claim 4, characterized in that: Each of the buffer structures comprises: A connecting portion connected to a housing of the hydraulic transmission device; A guide rod, a first end of which is slidably connected to the connecting portion, a second end of which is rotatably connected to the main body to be damped, and is configured to slide along the extension and retraction direction of the hydraulic rod under the action of the connecting portion; and The two ends of the buffer spring are respectively fixedly connected to the hydraulic rod and the guide rod, so that when the shell shakes, the buffer spring plays a buffering role on the main body to be damped.

6. The vibration reduction device according to any one of claims 2 to 5, characterized in that: There are multiple drive units, and the multiple drive units correspond one-to-one to the multiple hydraulic transmission devices. Each of the drive units includes: A driving member connected to the corresponding hydraulic transmission device and configured to provide a telescopic force for the hydraulic transmission device; a first detection unit, which is disposed at a connection position between the housing and the corresponding hydraulic rod and is configured to detect a first pulling force or a first pressing force applied by the housing to the hydraulic rod along a telescopic direction; and A control unit is correspondingly connected to the driving member and the first detection unit, and is configured to adjust the telescopic force according to the first pulling force or the first pressing force.

7. The vibration reduction device according to claim 6, characterized in that: Each of the drive units further comprises: A corresponding second detection unit is arranged between the corresponding buffer spring and the corresponding hydraulic rod and / or the corresponding buffer spring and the corresponding guide rod, and is connected to the corresponding control unit, and is configured to measure the second tension or second pressure between the buffer spring and the hydraulic rod, so that the control unit adjusts the telescopic force according to the second tension and the first tension or the second pressure and the first pressure.

8. The vibration reduction device according to claim 6, characterized in that: Each of the driving members comprises: a corresponding hydraulic pump configured to provide constant hydraulic energy to the hydraulic oil of the corresponding hydraulic transmission device; and The corresponding electro-hydraulic control valve is respectively connected to the oil inlet and oil outlet of the corresponding hydraulic transmission device and the corresponding control unit, and is configured to adjust the telescopic force of the corresponding hydraulic transmission device through the corresponding control unit.

9. A control method for a vibration reduction device according to claim 6, characterized in that: The control method comprises the following steps: Obtaining a first pulling force or a first pressing force respectively applied by the housing to the plurality of hydraulic rods along the extension and retraction direction; The telescopic force of the corresponding hydraulic rod is adjusted according to the first pulling force or the first pressure, so as to reduce the change of the force value of the main body to be damped at the connection between the corresponding hydraulic rod and the main body to be damped, so that the acceleration value generated at the connection between the corresponding hydraulic rod and the main body to be damped is zero or close to zero, so that the angle of the main body to be damped relative to the horizontal plane under the action of the automatic balancing device is less than or equal to the preset angle threshold.

10. A control method for a vibration reduction device according to claim 7, characterized in that: The control method comprises the following steps: Acquire a first pulling force or a first pressing force respectively applied by the shell to the hydraulic rod along the extension and retraction direction; Obtaining a second tension or a second pressure between the buffer spring and the corresponding hydraulic rod; The telescopic force of the hydraulic transmission device is respectively adjusted according to the first pulling force and the corresponding second pulling force or the first pressure and the corresponding second pressure to reduce the change in the force value of the main body to be damped at the connection between the corresponding guide rod and the main body to be damped, so that the acceleration value generated at the connection between the corresponding guide rod and the main body to be damped is zero or close to zero, so that the angle of the main body to be damped shaking relative to the horizontal plane under the action of the automatic balancing device is less than or equal to the preset angle threshold.

Images