Space paddle type inerter device

Abstract

The invention relates to a space paddle type inerter device. The space paddle type inerter device comprises a piston actuating rod, a flywheel, a rotary damper and a space paddle type rotating shaft, the space paddle type rotating shaft comprises a spherical hinge, a bearing and a connecting rod which are connected in sequence; the flywheel and the rotary damper are connected with the two ends of the connecting rod respectively, and the piston actuating rod is connected with the spherical hinge. The flywheel and the rotary damper rotate around the same axis, the piston actuating rod is driven by the outside to horizontally move, the flywheel and the rotary damper are driven by the space paddle type rotating shaft to rotate, and translation of the piston actuating rod is converted into rotation of the flywheel and the rotary damper through the space paddle type rotating shaft. And the rotation of the flywheel realizes quality improvement. The device achieves mass efficiency improvement and damping energy consumption, and is simple in mechanical form, flexible to install and easy to implement. Compared with the prior art, the device has the advantages of efficient vibration reduction, simple structure, low cost, convenience in maintenance, high energy dissipation efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical fields of high-end manufacturing and wind power generation, and in particular to a space propeller-type inertial capacity device. Background Art

[0002] In the wind power industry, there are many implementation mechanisms in the field of vibration control technology that can simulate similar functions, such as magnetorheological dampers, hydraulic viscous dampers, ball screw type inertia, coordinated liquid type inertia and spiral gas type inertia. However, the existing technologies have limited shock absorption effect and complex structure. Magnetorheological dampers: easily affected by high temperature environment, and the price is relatively high; hydraulic viscous dampers: complex equipment, maintenance and replacement of hydraulic oil are required; ball screw type inertia: large friction and limited life; coordinated liquid type inertia: capacity is limited and the effect is affected by temperature; spiral gas type inertia: requires additional space and the vibration frequency is affected by the environment. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art such as limited shock absorption effect and complex structure and to provide a spatial paddle-type inertial capacity device which can effectively reduce vibration, has a simple structure, low cost, easy maintenance and high energy dissipation efficiency.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] The present invention has significant advantages through the synergistic effect of the inertia element and the damping element. Compared with the magnetorheological damper, the present invention does not need to rely on external magnetic field control, the system structure is simpler and the cost is lower; compared with the hydraulic viscous damper, the present invention has a simple structure, small size, convenient maintenance and more optimized energy consumption control through the translation-rotation conversion mechanism and flywheel mass amplification; compared with other inertia devices, the present invention realizes the dual effects of inertia and damping, enhances the mass effect and energy dissipation efficiency, and has better comprehensive performance; in summary, the design of the present invention not only achieves the high-efficiency vibration reduction effect that the existing technology cannot achieve, but also has the significant advantages of simple structure, low cost, convenient maintenance and high energy dissipation efficiency.

[0006] The present invention can realize the parallel connection of the inertia element and the damping element. The action rod realizes the conversion of horizontal translational motion into spatial rotational motion through the spatial paddle-type actuation mechanism, driving the upper rotating shaft to rotate. A flywheel is attached to the upper part of the rotating shaft to realize the apparent mass amplification effect, and the lower part is connected to the rotary viscous fluid damping chamber. The rotary viscous fluid damping chamber is a closed cavity composed of an oil cylinder and a rotating blade, and is filled with a damping medium. The damping medium realizes relative flow under the push of the rotating blade, converting the vibration energy into heat to achieve a vibration reduction effect.

[0007] The present invention provides a space paddle type inertial capacity device, comprising: a piston actuating rod, a flywheel, a rotary damper and a space paddle type rotating shaft;

[0008] The spatial paddle-type rotating shaft comprises a ball joint, a bearing and a connecting rod which are connected in sequence; the flywheel and the rotary damper are respectively connected to the two ends of the connecting rod, and the piston actuating rod is connected to the ball joint;

[0009] The flywheel and the rotary damper rotate around the same axis, the piston actuating rod moves horizontally under external drive, the flywheel and the rotary damper are driven to rotate by the spatial paddle-type rotating shaft, and the translation of the piston actuating rod is converted into the rotation of the flywheel and the rotary damper by the spatial paddle-type rotating shaft. The rotation of the flywheel realizes mass efficiency. The present invention realizes mass efficiency, damping energy consumption, and has a simple mechanical form, flexible installation, and is easy to implement.

[0010] Furthermore, the rotary damper includes a sealed chamber and a rotary blade arranged in the sealed chamber.

[0011] Furthermore, the sealed chamber is filled with a damping medium.

[0012] Furthermore, the rotating blades rotate around the same axis as the flywheel in the sealed chamber.

[0013] Furthermore, the rotating blades stir the damping medium, so that the damping medium dissipates energy through the small holes on the rotating blades.

[0014] Furthermore, the output of the device consists of two parts, namely the output of the flywheel and the output of the rotary damper. The output of the flywheel is proportional to the relative acceleration of the two end points, and the output of the rotary damper is proportional to the relative velocity of the two end points. The proportional coefficients are the inertia coefficient and the damping coefficient respectively.

[0015] Furthermore, the inertia coefficient and damping coefficient of the inertia device are derived as follows:

[0016] The axial force on the piston actuator is F, its displacement is u, and the mass of the flywheel is m i , the flywheel radius is R i The angular velocity of the rotating blade and the flywheel is the same as ω, and the rotating blade is regarded as a straight plate with a length of l d , width t d , the distance between the pore and the axis of the rotating shaft is d, and the energy loss caused by the weight of the device and the friction of the device is ignored;

[0017] The torque of the device is expressed as

[0018] T=T i +T d (8)

[0019] T iis the torque of the flywheel, T d The torque provided to the rotary damper;

[0020] Furthermore, the moment of inertia of the flywheel is

[0021] J i =m i R i 2 (9)

[0022] The torque provided by the flywheel is expressed as

[0023]

[0024] The hydraulic torque of the rotating blade in the rotary damper is expressed as

[0025] T d =∫rdF (11)

[0026] Where dF is the liquid power at the radius d of the rotating blade.

[0027] Furthermore, dF is estimated using the Morison equation as follows:

[0028]

[0029] Where ρ is the density of the damping medium, J d is the inertia coefficient of the rotating blade, c d is the damping coefficient; dV = l d t d dr and dA = l d dr are the volume and area of ​​the rotating blade within unit radius; and are the tangential acceleration and velocity of the hole on the rotating blade, respectively.

[0030] Furthermore, by substituting formula (5) into formula (4), the torque of the rotary damper is expressed as

[0031]

[0032] Substituting formula (3) and formula (6) into formula (1), we can get

[0033]

[0034] The output of the space paddle inertial device can be determined by the angle θ and distance t between the splint of the space paddle shaft and the rotation axis. The output is expressed as

[0035]

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] (1) Under the synergistic effect of the inertia element and the damping element, the present invention not only enhances the mass efficiency of the inertia element, but also optimizes the energy consumption control effect of the damping element, which has significant advantages over the prior art.

[0038] (2) The present invention achieves a more efficient damping and energy dissipation effect through an innovatively designed inertia device, thereby improving the energy dissipation efficiency compared to traditional technologies.

[0039] (3) The present invention innovatively applies a spatial crankshaft structure to an inertial device, so that the flywheel on the inertial device can rotate in the same direction of rotation, thereby achieving a more stable quality enhancement effect.

[0040] (4) The present invention adopts a design with a simple mechanical structure. By connecting the inertia element and the damping element in parallel, the system structure is greatly simplified, making it more suitable for actual engineering applications and improving its practicality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a space paddle-type inertial container;

[0042] Figure 2 is a structural schematic diagram of a rotary damper;

[0043] Figure 3 It is a schematic diagram of the structure of the space paddle-type rotating shaft.

[0044] Figure numerals: 1-piston actuator rod; 2-flywheel; 3-rotation damper; 4-space paddle shaft; 301-sealed chamber; 302-rotating blade; 401-ball joint; 402-bearing; 403-connecting rod. DETAILED DESCRIPTION

[0045] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms and other features not clearly described in this technical solution are all considered to be common technical features disclosed in the prior art.

[0046] Example 1

[0047] This embodiment provides a space paddle type inertial device, such as Figure 1 As shown, it includes: a piston actuator rod 1, a flywheel 2, a rotary damper 3 and a spatial paddle-type rotating shaft 4;

[0048] like Figure 3As shown, the spatial paddle-type rotating shaft 4 includes a ball joint 401, a bearing 402 and a connecting rod 403 which are connected in sequence; the flywheel 2 and the rotary damper 3 are respectively connected to the two ends of the connecting rod 403, and the piston actuator rod 1 is connected to the ball joint 401;

[0049] The flywheel 2 and the rotary damper 3 rotate around the same axis, the piston actuating rod 1 moves horizontally under external drive, the flywheel 2 and the rotary damper 3 are driven to rotate by the spatial paddle-type rotating shaft 4, and the translation of the piston actuating rod 1 is converted into the rotation of the flywheel 2 and the rotary damper 3 by the spatial paddle-type rotating shaft 4. The rotation of the flywheel 2 realizes mass efficiency. The present invention realizes mass efficiency, damping energy consumption, and has a simple mechanical form, flexible installation, and is easy to implement.

[0050] like Figure 2 As shown, in a specific embodiment, the rotary damper 3 includes a sealed chamber 301 and a rotary blade 302 disposed in the sealed chamber 301 .

[0051] In a specific implementation, the sealed chamber 301 is filled with a damping medium.

[0052] In a specific embodiment, the rotating blades 302 rotate around the same axis as the flywheel 2 in the sealed chamber 301 .

[0053] In a specific implementation, the rotating blades 302 stir the damping medium so that the damping medium dissipates energy through the small holes on the rotating blades 302 .

[0054] In a specific embodiment, the output of the device consists of two parts, namely the output of the flywheel 2 and the output of the rotary damper 3. The output of the flywheel 2 is proportional to the relative acceleration of the two end points, and the output of the rotary damper 3 is proportional to the relative velocity of the two end points. The proportional coefficients are the inertia coefficient and the damping coefficient, respectively.

[0055] In a specific implementation, the inertia coefficient and damping coefficient of the inertia device are derived as follows:

[0056] The axial force on the piston actuator 1 is F, its displacement is u, and the mass of the flywheel 2 is m i , the radius of flywheel 2 is R i The angular velocity of the rotating blade 302 and the flywheel 2 is the same as ω, and the rotating blade 302 is regarded as a straight plate with a length of l d , width t d , the distance between the pore and the axis of the rotating shaft is d, and the energy loss caused by the weight of the device and the friction of the device is ignored;

[0057] The torque of the device is expressed as

[0058] T=T i +T d(15)

[0059] T i is the torque of flywheel 2, T d The torque provided to the rotary damper 3;

[0060] The moment of inertia of flywheel 2 is

[0061]

[0062] The torque provided by flywheel 2 is expressed as

[0063]

[0064] The hydraulic torque of the rotating blade 302 in the rotary damper 3 is expressed as

[0065] T d =∫rdF(18)

[0066] Where dF is the liquid power at the radius d of the rotating blade.

[0067] dF is estimated using the Morison equation as follows:

[0068]

[0069] Where ρ is the density of the damping medium, J d is the inertia coefficient of the rotating blade 302, c d is the damping coefficient; dV = l d t d dr and dA = l d dr are the volume and area of ​​the rotating blade 302 within a unit radius, respectively; and are the tangential acceleration and velocity of the fine hole position on the rotating blade 302, respectively.

[0070] Substituting formula (5) into formula (4), the torque of the rotary damper 3 is expressed as

[0071]

[0072] Substituting formula (3) and formula (6) into formula (1), we can get

[0073]

[0074] The output of the space paddle type inertial device can be determined by the angle θ and the distance t between the clamping plate of the space paddle type rotating shaft 4 and the rotating axis. The output is expressed as

[0075]

[0076] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0077] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A space paddle type inertial volume device, characterized in that: include: A piston actuator rod (1), a flywheel (2), a rotary damper (3) and a spatial paddle-type rotating shaft (4); The spatial paddle-type rotating shaft (4) comprises a ball joint (401), a bearing (402) and a connecting rod (403) which are connected in sequence; the flywheel (2) and the rotary damper (3) are respectively connected to the two ends of the connecting rod (403); the piston actuating rod (1) is connected to the ball joint (401); The flywheel (2) and the rotary damper (3) rotate around the same axis, and the piston actuating rod (1) moves horizontally under external drive, and the flywheel (2) and the rotary damper (3) are driven to rotate by the spatial paddle-type rotating shaft (4), and the translational motion of the piston actuating rod (1) is converted into rotation of the flywheel (2) and the rotary damper (3) by the spatial paddle-type rotating shaft (4).

2. A space paddle-type inertial container according to claim 1, characterized in that: The rotary damper (3) comprises a sealed chamber (301) and a rotary blade (302) arranged in the sealed chamber (301).

3. A space paddle-type inertial container device according to claim 2, characterized in that: The sealed chamber (301) is filled with a damping medium.

4. A space paddle-type inertial container device according to claim 2, characterized in that: The rotating blades (302) rotate around the same axis as the flywheel (2) in the sealed chamber (301).

5. The space paddle-type inertial container device according to claim 3, characterized in that: The rotating blades (302) stir the damping medium, so that the damping medium dissipates energy through the small holes on the rotating blades (302).

6. The space paddle-type inertial container device according to claim 2, characterized in that: The output of the device consists of two parts, namely the output of the flywheel (2) and the output of the rotary damper (3). The output of the flywheel (2) is proportional to the relative acceleration of the two end points, and the output of the rotary damper (3) is proportional to the relative speed of the two end points. The proportional coefficients are the inertia coefficient and the damping coefficient.

7. A space paddle-type inertial container device according to claim 6, characterized in that: The inertia coefficient and damping coefficient of the inertia device are derived as follows: The axial force on the piston actuator (1) is F, its displacement is u, and the mass of the flywheel (2) is m i , the radius of the flywheel (2) is R i , the angular velocity of the rotating blade (302) and the flywheel (2) is the same as ω, and the rotating blade (302) is regarded as a straight plate with a length of l d , width t d , the distance between the pore and the axis of the rotating shaft is d, and the energy loss caused by the weight of the device and the friction of the device is ignored; The torque of the device is expressed as T=T i +T d (1) T i is the torque of the flywheel (2), T d The torque provided to the rotary damper (3).

8. The space paddle-type inertial container device according to claim 7, characterized in that: The moment of inertia of the flywheel (2) is The torque provided by the flywheel (2) is expressed as The hydraulic torque of the rotating blade (302) in the rotary damper (3) is expressed as T d =∫rdF (4) Where dF is the liquid power at the radius d of the rotating blade.

9. The space paddle-type inertial container device according to claim 8, characterized in that: dF is estimated using the Morison equation as follows: Where ρ is the density of the damping medium, J d is the inertia coefficient of the rotating blade (302), c d is the damping coefficient; dV = l d t d dr and dA = l d dr are the volume and area of ​​the rotating blade (302) within a unit radius, respectively; and are the tangential acceleration and velocity of the fine hole position on the rotating blade (302), respectively.

10. The space paddle-type inertial container device according to claim 9, characterized in that: Substituting formula (5) into formula (4), the torque of the rotary damper (3) is expressed as Substituting formula (3) and formula (6) into formula (1), we can get The output of the space paddle type inertial device can be determined by the angle θ and the distance t between the clamping plate of the space paddle type rotating shaft (4) and the rotating axis. The output is expressed as

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