Cabin vibration isolator device

Abstract

The utility model discloses a cabin vibration isolator device which comprises a lower connecting plate used for fixing an air spring, a steel spring and a supporting stand column. The air spring is fixed between the lower connecting plate and the supporting plate; the steel springs are fixed between the lower connecting plate and the supporting plate and evenly distributed in the circumferential direction with the air spring as the center. The upper connecting plate penetrates through the stopping plate and is fixed on the supporting plate; the supporting stand column is used for fixing the stopping plate; and the stopping plate is located between the upper connecting plate and the supporting plate and used for limiting and stopping the air spring and the steel spring. The device can be installed below various simulator cabins, is used in cooperation with a vibration exciter, can be well used for vibration isolation of the simulator cabins, and can isolate high-frequency vibration and transmit low-frequency vibration. The device is simple in structure, small in size, light in weight, low in manufacturing and maintenance cost, convenient to install, high in vibration isolation efficiency and rich in application scene.

Description

Technical Field

[0001] This utility model belongs to the field of cabin vibration isolation equipment, and in particular a cabin vibration isolator device. Background Technology

[0002] The cockpit vibration isolator is installed under the cockpit of various simulators. When used in conjunction with the exciter, it can be well applied to the vibration simulation system of the simulator cockpit, and can isolate high-frequency vibrations and transmit low-frequency vibrations.

[0003] Many traditional simulator cockpit vibration isolation devices have disadvantages such as large size, heavy weight, and high cost. This also leads to a high overall weight of the simulator system and high requirements for the motion table, which in turn leads to a high overall manufacturing cost and high operation and maintenance cost of the simulator. Utility Model Content

[0004] The purpose of this utility model is to provide a cockpit vibration isolator device with a simple structure and small size, thereby more conveniently realizing the function of simulator cockpit vibration isolation.

[0005] The technical solution to achieve the purpose of this utility model is as follows:

[0006] A cockpit vibration isolator device; comprising:

[0007] The lower connecting plate is used to fix the air spring, steel spring, and support column;

[0008] An air spring is fixed between the lower connecting plate and the support plate;

[0009] Multiple steel springs are fixed between the lower connecting plate and the support plate, and are evenly distributed circumferentially around the air spring as the center;

[0010] The upper connecting plate passes through the stop plate and is fixed to the support plate;

[0011] Support columns are used to fix the stop plates;

[0012] The stop plate, located between the upper connecting plate and the support plate, is used to limit and stop the movement of air springs and steel springs.

[0013] Compared with the prior art, the significant advantages of this utility model are:

[0014] (1) The simple structure can greatly reduce the weight and size of the vibration isolator, thus significantly reducing manufacturing costs. (2) The single-unit vibration isolator is more adaptable to complex environments and is more flexible and convenient to use. (3) The vibration isolation efficiency is high, reaching over 90%. (4) The device is easy to assemble, and the parts are easy to replace, facilitating later maintenance and reducing operating costs. Attached Figure Description

[0015] Figure 1This is a structural diagram of the cockpit vibration isolator device.

[0016] Figure 2 This is a cross-sectional view of the cockpit vibration isolator device.

[0017] Figure 3 This is a graph showing the vibration isolation efficiency of the vibration isolator device.

[0018] Figure 4 This is a schematic diagram of the application of this utility model to the cockpit of a certain model simulator. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] A structural diagram of a cabin vibration isolator device according to this embodiment is shown below. Figure 1 , Figure 2 As shown, it is composed of an air spring 10, a steel spring 11, an upper connecting plate 12, a lower connecting plate 13, a support column 14, a stop plate 15, a support plate 16, and a silicone gasket 17.

[0021] See Figure 1 , Figure 2 The air spring 10 shown is a spring that utilizes the elasticity of air, consisting of two metal plates and a closed rubber cavity in the middle. In this example, the stiffness coefficient of the air spring is adjusted by adjusting the air pressure inside the cavity to meet the usage requirements.

[0022] See Figure 1 , Figure 2 The steel spring 11 shown is made of steel spring with a rectangular cross-section. Three steel springs 11 and one air spring 10 are assembled in parallel. The product of the total stiffness coefficient and the maximum stroke is the corresponding maximum required load. The three steel springs 11 are evenly distributed around the air spring 10.

[0023] See Figure 1 , Figure 2 The upper connecting plate 12 shown is fixed by a rectangular plate and a circular boss. The rectangular plate is used to connect with the cockpit mounting surface, and the circular boss is fixed to the support plate. The circular boss passes through the middle of the stop plate. Specifically, the rectangular plate is used to connect with the cockpit mounting surface, the circular boss is fixed to the support plate, and the circular boss passing through the middle of the stop plate is welded from a rectangular steel plate and a circular boss. The upper surface of the upper connecting plate is connected to the cockpit mounting surface and has a certain rigidity and installation interface. The lower surface of the boss is fixed to the support plate 16 by bolts, and the boss can freely pass through the middle of the stop plate 15.

[0024] See Figure 1 , Figure 2The lower connecting plate 13 shown is connected to the mounting surface of the lower mounting platform of the cockpit. It has a certain rigidity and installation interface. It is fixedly connected to the lower surface of the air spring 10 through the silicone gasket 17. The lower connecting plate 13 is connected to the steel spring 11 and the support column 14.

[0025] See Figure 1 , Figure 2 The stop plate 15 shown is fixed to the three support columns 14 by bolts and is used to limit the air spring 10 and the steel spring 11. The boss of the upper connecting plate 12 can freely pass through the middle of it. The distance between the boss and the upper connecting plate 12 and the support plate 16 is equal to half (H) of the effective stroke (2H) of the vibration isolation device.

[0026] See Figure 1 , Figure 2 The upper surface of the support plate 16 shown is fixed to the lower surface of the boss of the upper connecting plate 12 by bolts, and the lower surface is fixed to the upper surface of the air spring 10 by bolts. The silicone gasket 17 between the support plate 16 and the air spring 10 is used to reduce wear. The lower surface of the support plate 16 is fixed to the steel spring 11 by bolts, which has a certain rigidity. The connection between the steel spring 11 and the support plate 16 is firm and reliable.

[0027] See Figure 1 , Figure 2 The silicone pad 17 shown can perfectly fit the upper and lower surfaces of the air spring 10. It is relatively thin and has a certain degree of elasticity, and is used to reduce the wear between the air spring 10 and the support plate 16 and the lower connecting plate 13.

[0028] See Figure 3 The figure shows the vibration isolation efficiency curve of the vibration isolator device of this utility model. The horizontal axis represents the magnitude of the force (in Newtons) excited by the exciter above the vibration isolator device, and the vertical axis represents the vibration isolation efficiency. As can be seen from the curve, the vibration isolation efficiency of this vibration isolator device can reach over 90%.

[0029] See Figure 4 The diagram shown is a schematic of the application of this utility model to a simulator cockpit. The vibration isolator device is installed at five locations—front, middle, and rear—of the cockpit according to its weight and load distribution requirements. The upper and lower surfaces of each device are on the same horizontal plane and are connected to the upper and lower mounting surfaces via anti-loosening nuts to ensure a secure and reliable connection. This device can filter out high-frequency vibrations generated by the exciter inside the cockpit, preventing high-frequency vibrations from affecting the cockpit mounting platform below. The air pressure inside the air spring of this vibration isolator device needs to be checked periodically to ensure it meets the usage requirements. This utility model is not limited to the above embodiment. All technical solutions formed by equivalent substitutions fall within the protection scope of this utility model.

Claims

1. A cockpit vibration isolator device; characterized in that, include: The lower connecting plate is used to fix the air spring, steel spring, and support column; An air spring is fixed between the lower connecting plate and the support plate; Multiple steel springs are fixed between the lower connecting plate and the support plate, and are evenly distributed circumferentially around the air spring as the center; The upper connecting plate passes through the stop plate and is fixed to the support plate; Support columns are used to fix the stop plates; The stop plate, located between the upper connecting plate and the support plate, is used to limit and stop the movement of air springs and steel springs.

2. The cockpit vibration isolator device according to claim 1; characterized in that, The stop plate is equidistant from the upper connecting plate and the support plate.

3. The cockpit vibration isolator device according to claim 1; characterized in that, The steel spring has a rectangular cross-section.

4. The cockpit vibration isolator device according to claim 1; characterized in that, The upper connecting plate is fixed by a rectangular plate and a circular boss. The rectangular plate is used to connect with the cockpit mounting surface, and the circular boss is fixed to the support plate. The circular boss passes through the middle of the stop plate.

5. The cockpit vibration isolator device according to claim 1; characterized in that, Silicone gaskets are provided between the support plate and the air spring, and between the air spring and the lower connecting plate.

6. The cockpit vibration isolator device according to claim 1; characterized in that, The air spring consists of two metal plates, one above the other, and a closed rubber cavity in the middle for adjusting stiffness.

7. The cockpit vibration isolator device according to claim 1; characterized in that, The support plate, the upper connecting plate, and the air spring are all fixed together by bolts.

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