A vibration isolation span-adjustable device for an in-cabin power module

Abstract

The application discloses an in-cabin power module vibration isolation span adjustable vibration isolation device, and belongs to the technical field of metamaterial vibration reduction and noise reduction. The device comprises a power cabin shell, a power module, an outer flange, an inner flange, a vibration isolation body, a screw rod and a motor. The vibration isolation body is installed in an installation space formed after the inner flange and the outer flange are nested, the outer flange, the inner flange and the vibration isolation body form a vibration isolation body assembly, the vibration isolation body assembly is located in an annular cavity formed by the power cabin shell and the power module, the vibration isolation body assembly is simultaneously in sliding fit with linear guide rails on the power cabin shell and the power module, the screw rod penetrates through the inside of the cabin body through end covers on both sides of the power cabin shell and is in threaded fit with the outer flange, the motor is fixedly connected to the outside of the power cabin and is connected to the screw rod through a shaft coupling and controls rotation of the screw rod, and idling of the screw rod enables the vibration isolation assembly to move along the linear guide rails under the driving of the motor and the screw rod. The application can meet the vibration isolation space requirement of rotary parts, is accurate in assembly positioning, high in safety and adjustable in vibration isolation frequency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metamaterial vibration and noise reduction, and particularly relates to a cabin-in power module vibration isolation span adjustable vibration isolation device. BACKGROUND

[0002] As the source of power for machine equipment, the power module is like the heart of the machine, and its importance is self-evident. Generally, during the operation of the power module, a certain vibration will be generated, which will accelerate the wear of the equipment and even cause some parts to loosen, which is not conducive to the long-term use of the carrier machine. The development of the vibration isolation device can solve this problem. Since the working environment of the cabin machine (such as underwater vehicles, aircraft and vehicles, etc.) is relatively extreme and often carries important equipment and living beings including humans, the vibration isolation demand of the cabin machine is more important. Effective vibration isolation of the cabin-in power module can not only provide a comfortable environment for the passengers, but also greatly improve the safety of the equipment. With the improvement of living standards and the research on the mechanism of vibration failure, the research on the cabin-in power module vibration isolation device has become a hot topic.

[0003] The cabin-in power module and the power cabin carrying it usually have a large span, and reasonable position distribution of the vibration isolation device on the large span will greatly optimize the vibration isolation effect. However, the arc contact surface and the compact vibration isolation space also bring difficulties to the vibration isolation.

[0004] The traditional vibration isolation of the cabin-in shaft transmission power module uses a ring-shaped rubber isolator to fill and isolate the power module and the cabin body, which has a certain effect. However, the rubber is easy to age and has poor impact resistance, and its maintenance investment is higher and there is a certain risk. At the same time, due to the limited use requirements of the machine, the power cabin is generally designed to be compact, and the space for installing the vibration isolation device is small. In order to reduce the thickness limited by the vibration isolation, domestic and foreign scholars have studied the materials and structures of the buffer layer filled in the isolator, such as metal rubber isolator, magnesium alloy isolator, etc. Compared with the traditional rubber ring isolation, the performance is better, but it still cannot break through the limitation of the narrow vibration isolation space, and the performance cannot be fully realized. In addition, the large span of the power cabin also brings difficulties to the installation of the vibration isolation device. SUMMARY

[0005] Therefore, the application provides a cabin-in power module vibration isolation span adjustable vibration isolation device, which can meet the vibration isolation requirements of different power modules. In addition, the device can meet the vibration isolation space requirements of the rotating parts, and the assembly and positioning are accurate, safe and adjustable in vibration frequency.

[0006] A cabin-in power module vibration isolation span adjustable vibration isolation device, comprising a power cabin shell, a power module, an outer flange, an inner flange, a vibration isolation body, a screw rod and a motor.

[0007] The inner circumferential surface of the power cabin shell and the outer circumferential surface of the power module are respectively provided with recessed linear guides;

[0008] The vibration isolation body is installed in the mounting space formed by the nested inner flange and outer flange by embedded bonding, and the outer flange, inner flange and vibration isolation body form a vibration isolation body assembly;

[0009] The vibration isolation body assembly is located in the annular cavity formed by the power cabin shell and the power module, and simultaneously slides with the linear guides on the power cabin shell and the power module; the screw rod penetrates the inside of the cabin through the end covers on both sides of the power cabin shell and threadedly cooperates with the outer flange, the motor is fixedly connected to the outside of the power cabin and connects the screw rod through a shaft coupling and controls the rotation of the screw rod, and the idling of the screw rod causes the vibration isolation assembly to move along the linear guides under the driving of the motor and the screw rod.

[0010] Further, the power cabin shell is a cylindrical cavity structure, the inner cylindrical surface of which is provided with two or more linear guides, i.e. inner guides, which are uniformly distributed in the circumferential direction, the inner guides being used to limit the circumferential rotation of the outer flange in the power cabin shell, one side end cover of the power cabin shell is fixedly connected thereto, and the other side end cover is detachably connected; the two side end covers are respectively provided with through holes corresponding to the positions and numbers of the guides, the through holes being used to limit the position of the screw rod in the power cabin shell.

[0011] Further, the outer flange is a circular ring structure, and the ear-shaped sliding blocks are respectively arranged radially outward, the ear-shaped sliding blocks being used to cooperate with the inner guides of the power cabin shell, one of the ear-shaped sliding blocks is provided with a threaded hole for cooperating with the screw rod, and the threaded hole limits the radial movement of the outer flange; the inner circumferential surface of the outer flange is uniformly provided with fan-shaped inner clamping grooves for placing the vibration isolation bodies in the circumferential direction, the fan-shaped inner clamping grooves are provided with reserved spaces, and the fan-shaped inner clamping grooves can limit the radial outward and axial displacement of the vibration isolation bodies; the outer flange is provided with uniformly distributed lightening holes, the inner diameter of the lightening holes at the corresponding positions is greater than that of the remaining part, and the lightening holes form a avoiding gap for mounting the inner flange.

[0012] Further, the inner flange is a circular ring structure, and two or more T-shaped sliding blocks are respectively arranged radially inward, the T-shaped sliding blocks being used to cooperate with the linear guides, i.e. outer guides, on the outer cylindrical surface of the power module; the inner flange is uniformly provided with fan-shaped outer clamping grooves for placing the vibration isolation bodies in the outer circumferential direction, the fan-shaped outer clamping grooves are provided with reserved spaces, and the fan-shaped outer clamping grooves are used to limit the radial inward displacement of the vibration isolation bodies and the axial displacement of the inner flange; the end faces of the inner flange on both sides are uniformly distributed with ear plates extending in the radial direction, after the inner flange and the outer flange are assembled by embedding the upper and lower ends of the vibration isolation body in the respective arc-shaped clamping grooves, the ear plates accommodate the outer flange inside, and the ear plates form a gap between the inner flange and the outer flange.

[0013] Further, the vibration isolation body is arc-like hollow, and the whole is a metamaterial vibration isolation design, the vibration isolation body is arc-shaped structure outside the circumference of 180mm diameter, and is arc-like structure inside, the arc-like structure is that the two sides of the arc-shaped line become two straight lines which are parallel to each other and perpendicular to the chord opposite to the arc; the vibration isolation body is distributed with three layers of hollow structures on the circumferences of different diameters, and all the hollow structures are evolved from rectangles.

[0014] Further, in the three layers of hollow structures of the vibration isolation body, the structures of the first layer and the third layer are different from that of the second layer, the lower side of the first layer of hollow structure removes an isosceles triangle material, the structure of the second layer removes the same isosceles triangle on the upper and lower sides, and similarly, the third layer removes on the upper side.

[0015] Further, in addition to the threaded holes of the ear-shaped sliders, the remaining ear-shaped sliders are provided with through holes, and the threaded holes of the ear-shaped sliders of the subsequent installed outer flanges are avoided to be installed on the same screw rod, and the remaining ear-shaped sliders pass through the corresponding positions of the screw rods through the through holes on the ear-shaped sliders.

[0016] Beneficial effects:

[0017] 1、The vibration isolation device is axially controllable in the cabin by setting the vibration isolation body assembly in the annular cavity formed by the power cabin shell and the power module, sliding the vibration isolation body assembly with the linear guide rails on the power cabin shell and the power module, and driving the screw rod and the vibration isolation body assembly by the external motor, so that the vibration isolation device can be reasonably distributed in a larger span according to the actual working condition, which greatly optimizes the vibration isolation effect, not only meets the requirements of different power modules on the vibration isolation performance, but also meets the vibration isolation space requirements of the rotating parts.

[0018] 2、The inner cylindrical surface of the power cabin shell is provided with two or more linear guide rails which are uniformly distributed in the circumferential direction, the outer circumferential surface of the power module is provided with an inner recessed linear guide rail, the vibration isolation assembly is matched with the linear guide rail by the embedded matching mode of the sliders on the inner and outer flanges, and the number of the vibration isolation body assemblies installed between the power cabin shell and the power module can correspond to the number of the linear guide rails, so that the vibration isolation device has the function of large-scale adjustment to adapt to the vibration isolation requirements in different working conditions and complex working environments.

[0019] 3、The vibration isolation device is formed by the outer flange, the inner flange and the vibration isolation body through embedded cooperation, the outer flange and the inner flange are provided with the reserved space for accommodating the fan-shaped clamping groove of the vibration isolation body, the vibration isolation body is deformed and a large part of energy is absorbed under the condition of small vibration amplitude, the vibration isolation body is deformed under the condition of large vibration amplitude, the vibration isolation body with large deformation is pressed into the preset deformation groove, meanwhile, the lug plate of the inner flange is limited by the gap between the inner flange and the outer flange, the stability of the outer flange is effectively ensured, the vibration isolation device can adapt to different intensity vibration environments, and the vibration isolation performance is excellent.

[0020] 4、The outer flange of the present application is designed with the avoiding gap, the inner flange can be conveniently assembled with the outer flange through the gap, the structure components of the product are reduced, the gap between the inner flange and the outer flange is better controlled, and the vibration isolation effect of the vibration isolation device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the vibration isolation span adjustable vibration isolation device of the present application;

[0022] Figure 2 It is an explosion view of the vibration isolation span adjustable vibration isolation device of the present application;

[0023] Figure 3 It is a front view of the vibration isolation span adjustable vibration isolation device of the present application;

[0024] Figure 4 It is a side view of the vibration isolation span adjustable vibration isolation device of the present application;

[0025] Figure 5 It is Figure 3 A-A sectional view of the present application;

[0026] Figure 6 It is a three-dimensional structure schematic view of the power cabin shell of the present application;

[0027] Figure 7 It is a side view of the power cabin shell of the present application;

[0028] Figure 8 It is a three-dimensional structure schematic view of the outer flange of the present application;

[0029] Figure 9 It is a side view of the outer flange of the present application;

[0030] Figure 10 It is a three-dimensional structure schematic view of the inner flange of the present application;

[0031] Figure 11 It is a side view of the inner flange of the present application.

[0032] Wherein, 1-power cabin shell, 2-outer flange, 3-inner flange, 4-vibration isolation body, 5-inner guide rail, 6-outer guide rail, 7-screw rod, 8-through hole, 9-bolt hole, 10-ear plate, 11-ear-shaped slider, 12-threaded hole, 13-fan-shaped inner clamping groove, 14-weight reduction hole, 15-ear plate, 16-fan-shaped outer clamping groove, 17-T-shaped slider, 18-power module. DETAILED DESCRIPTION

[0033] The application will be described in detail below with reference to the accompanying drawings and examples.

[0034] The application provides a cabin power module vibration isolation span adjustable vibration isolation device, which comprises a power cabin shell 1, a power module 18, an outer flange 2, an inner flange 3, a vibration isolation body 4, a screw rod 7 and a motor (not shown in the drawing). Figure 1 With Figure 3 The overall structure of the vibration isolation device is shown, Figure 2 The relative position relationship of each part of the vibration isolation device when assembled is shown. The vibration isolation device has the following characteristics:

[0035] 1. After the outer flange 2 and the inner flange 3 are assembled with the vibration isolation body 4 into a vibration isolation body assembly, the vibration isolation body assembly is placed into the power cabin from the end of the power cabin shell 1 that is not tightly sealed, and is matched with the inner guide rail 5 of the power cabin shell 1, the outer guide rail 6 of the power module 18 and the screw rod 7. When the motor works, the screw rod 7 moves, so that the vibration isolation body and the inner and outer flanges form a vibration isolation assembly that moves as a whole into the cabin. When it moves to a certain position, the motor is stopped, and the position of the vibration isolation body and the inner and outer flanges is fixed. The outer guide rail 6 of the power module 18 is a concave linear guide rail machined on the outer circumferential surface of the power module 18, and the cross-sectional shape of the linear guide rail matches the shape of the T-shaped slider 17 of the inner flange 3, as shown in the drawings. Figure 4 And 5

[0036] 2. For each outer flange, there are a threaded hole and two through holes on the three ear-shaped sliders. In order to enable three motors to control the movement of one outer flange, the threaded hole of the subsequently installed outer flange is avoided to be installed on the same screw rod as the previous outer flange, and the other two through holes are installed on the remaining two screw rods 7.

[0037] 3. In order to enable the outer flange to move smoothly in the cabin under the control of the motor, the through holes of the screw rod and the outer flange need to be lubricated.

[0038] 4. The end cover on one side of the power cabin shell is fixedly connected, and in addition to the three through holes 8 required for cooperation with the three screw rods, three groups of two evenly distributed bolt holes 9 are also required on the end cover, as shown in the drawings. Figure 3

[0039] As shown in the drawings,​​Figure 6 and 7 As shown, the power compartment outer shell 1 has a cylindrical structure, with three evenly distributed concave linear guide rails, i.e., inner guide rails 5, on its inner cylindrical surface. The inner guide rails 5 provide guidance for the outer flange 2 and also restrict the circumferential rotation of the outer flange 2 within the compartment. One end cover of the power compartment outer shell 1 is fixedly connected to it, while the other end cover is movable. An ear plate 10 is provided on the end face of the movable side, as shown in the attached figure. Figure 3 As shown, the ear plate 10 is provided with bolt holes. The motor is installed near the ear plate 10 on the non-fixed side end cover by bolt connection. The coupling is arranged on the end cover. The two end covers are provided with three evenly distributed through holes to limit the position of the screw in the compartment. The movable end cover is also provided with threaded holes for assembly with the power compartment shell.

[0040] As attached Figure 8 and 9 As shown, the outer flange 2 has a circular structure with a maximum diameter of 420mm, a minimum diameter of 380mm, and a thickness of 45mm. It has three ear-shaped sliders 11 arranged radially outwards, each with a radius of 30° and a thickness of 40mm, used to mate with the inner guide rail 5 of the power compartment outer shell 1. One of the ear-shaped sliders 11 has a threaded hole 12 for mates with a screw 7, restricting the radial movement of the outer flange 2. The inner circumference of the outer flange 2 is evenly distributed with fan-shaped inner slots 13 for placing vibration isolators 4. These slots are 40mm wide and 25mm deep, with reserved space for the deformation of the vibration isolators. The fan-shaped inner slots 13 restrict the radial outward displacement of the vibration isolators 4 and the axial displacement towards the outer flange. The outer flange has evenly distributed weight-reducing holes 14, which penetrate the inner and outer circumferences of the outer flange 2 to reduce its weight. These holes have a radius of 50.38° and a width of 30mm. The inner diameter of the weight reduction hole 14 on the outer flange 2 is larger than the rest, forming a clearance notch for installing the inner flange 3. The outer flange 2 is made entirely of 6061-T6 alloy material, which has high strength and good seismic and impact resistance.

[0041] As attached Figure 10 and 11As shown, the inner flange 3 is also a circular ring structure, with a maximum diameter of 340 mm, a minimum diameter of 310 mm, and a thickness of 70 mm. Three T-shaped sliders 17 are arranged radially inwardly on the inner flange 3, respectively, for cooperation with the outer guide rail 6 on the outer cylindrical surface of the power module. The inner flange 3 is uniformly distributed with a fan-shaped outer clamping groove 16 for placing the vibration isolation body 4 along the circumference, with a clamping groove depth of 40 mm and an arc of 60°. The center surface of the fan-shaped outer clamping groove 16 is coplanar with the center surface of the T-shaped slider 17, which can limit the radial inward displacement of the vibration isolation body 4 and the axial displacement of the inner flange 3. The outer circle of the inner flange 3 is uniformly distributed with an ear plate 15 extending radially, with a width of 5 mm and an arc of 30°. After assembly, the ear plate 15 forms a gap limit between the inner flange 3 and the outer flange 2. The entire inner flange 3 is also made of 6061-T6 alloy material.

[0042] Vibration isolation principle: Since the inner flange 2 of the vibration isolation device is connected to the power module 18 through the outer guide rail 6 and the T-shaped slider 17, when the power module 18 operates, the vibration generated is conducted to the inner flange 2 of the vibration isolation device through the T-shaped slider 17. At the moment before the inner flange 2 vibrates, the vibration isolation body 4 does not deform. Further, when the vibration is conducted to the inner flange 2 through the T-shaped slider 17, the spatial position of the inner flange 3 of the vibration isolation device changes, but the outer flange 6 remains in a stable state, the vibration isolation body 4 deforms elastically and absorbs most of the energy. Further, after the deformation of the vibration isolation body 4 continues to increase, the vibration isolation body 4 with a large deformation amount will be pressed into the preformed deformation groove of the fan-shaped inner clamping groove 13 and the fan-shaped outer clamping groove 16, effectively ensuring the stability of the outer flange 1. Since different power modules generate vibration at different positions, the vibration isolation device is controlled by the motor to the position where the vibration is generated, and three vibration isolation devices are used in cooperation, which can greatly improve the vibration isolation effect.

[0043] In summary, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An in-cabin power module vibration isolation span-adjustable vibration isolation device, characterized by, The power cabin shell, the power module, the outer flange, the inner flange, the vibration isolation body, the screw rod and the motor are included. The inner circumferential surface of the power cabin shell and the outer circumferential surface of the power module are respectively provided with recessed linear guides. The vibration isolation body is installed in the mounting space formed by the nested inner flange and outer flange through embedded bonding, and the outer flange, the inner flange and the vibration isolation body form a vibration isolation body assembly. The vibration isolation body assembly is located in the annular cavity formed by the power cabin shell and the power module, and simultaneously slides with the linear guides on the power cabin shell and the power module; the screw rod penetrates the cabin body interior through the end covers on both sides of the power cabin shell and is in threaded cooperation with the outer flange, the motor is fixedly connected to the outside of the power cabin and is connected to the screw rod through a shaft coupling and controls the rotation of the screw rod, and the idling of the screw rod causes the vibration isolation assembly to move along the linear guides under the driving of the motor and the screw rod.

2. The in-cabin power module isolation span-adjustable isolation device of claim 1, wherein, The power cabin shell is a cylindrical cavity structure, the inner cylindrical surface of which is provided with two or more linear guides, i.e. inner guides, which are uniformly distributed along the circumference and are used to limit the circumferential rotation of the outer flange in the power cabin shell; one side of the end cover of the power cabin shell is fixedly connected thereto, and the other side of the end cover is detachably connected; the two end covers are respectively provided with through holes corresponding to the positions and numbers of the guides, and the through holes are used to limit the position of the screw rod in the power cabin shell.

3. The in-cabin power module isolation span-adjustable isolation device of claim 2, wherein, The outer flange is a circular ring structure, and the ear-shaped sliding blocks are respectively arranged on the outer flange in the radial direction outward, the ear-shaped sliding blocks are used to cooperate with the inner guides of the power cabin shell, one of the ear-shaped sliding blocks is provided with a threaded hole for cooperating with the screw rod, and the threaded hole limits the radial movement of the outer flange; the inner circumferential surface of the outer flange is uniformly provided with fan-shaped inner clamping grooves for placing the vibration isolation bodies in the circumferential direction, the fan-shaped inner clamping grooves are provided with reserved spaces, and the fan-shaped inner clamping grooves can limit the radial outward movement and the axial displacement of the vibration isolation bodies; the outer flange is provided with uniformly distributed lightening holes, the inner diameter of the lightening holes corresponding to the positions is greater than that of the remaining part, and the lightening holes form a gap for mounting the inner flange.

4. The in-cabin power module isolation span adjustable isolation device of claim 3, wherein, The inner flange is a circular ring structure, and two or more T-shaped sliding blocks are respectively arranged on the inner flange in the radial direction inward, the T-shaped sliding blocks are used to cooperate with the linear guides, i.e. outer guides, on the outer cylindrical surface of the power module; the inner flange is uniformly provided with fan-shaped outer clamping grooves for placing the vibration isolation bodies in the outer circumferential direction, the fan-shaped outer clamping grooves are provided with reserved spaces, and the fan-shaped outer clamping grooves are used to limit the radial inward movement of the vibration isolation bodies and the axial displacement of the inner flange; the end faces of the inner flange on both sides are uniformly distributed with ear plates extending in the radial direction, and after the inner flange and the outer flange are assembled by embedding the upper and lower ends of the vibration isolation body in the respective arc-shaped clamping grooves, the ear plates accommodate the outer flange in the inner part, and the ear plates form a gap between the inner flange and the outer flange.

5. The in-cabin power module isolation span adjustable isolation apparatus of claim 4, wherein, The vibration isolation body is an arc-shaped hollow structure, and the whole is a metamaterial vibration isolation design; the vibration isolation body is an arc structure outside a circle with a diameter of 180 mm, and is an arc-shaped structure inside; the arc-shaped structure is an arc-shaped structure in which the two sides of the arc are changed into two parallel straight lines perpendicular to the chord opposite to the arc; the vibration isolation body is distributed with three layers of hollow structures on different diameters of the circle, and all the hollow structures are evolved from rectangles.

6. The in-cabin power module isolation span adjustable isolation device of claim 5, wherein, The three-layer hollow structure of the vibration isolation body, the structure of the first layer and the third layer is different from that of the second layer, the lower side of the first layer hollow structure removes a isosceles triangle material, the structure of the second layer removes the same isosceles triangle on the upper and lower sides, and the third layer removes the isosceles triangle on the upper side.

7. The in-cabin power module isolation span adjustable isolation apparatus of claim 6, wherein, In addition to the threaded holes of the ear-shaped sliding blocks, the rest of the ear-shaped sliding blocks are provided with through holes, and the threaded holes of the ear-shaped sliding blocks of the subsequent installed outer flanges are avoided to be installed on the same screw rod as the previous outer flange, and the rest of the ear-shaped sliding blocks pass through the corresponding position of the screw rod through the through holes.

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