Vibration isolators and vibration isolator systems

Abstract

This invention belongs to the field of mechanical equipment technology and discloses a vibration isolator and vibration isolator system. The vibration isolator includes a base plate, a hydraulic device, a first elastic element, and a limiting component. A top plate is disposed above the base plate. The hydraulic device is located between the base plate and the top plate. Multiple first elastic elements are disposed between the base plate and the top plate. The limiting component includes a guide element and a limiting element. One end of the guide element is connected to the base plate and / or the hydraulic device, and the other end of the guide element passes through the top plate. The limiting element is installed on the guide element and is located above the top plate. The hydraulic device is used to drive the top plate to rise so as to resist the top plate. Under normal operating conditions, the hydraulic device does not work, and the vibration isolator effectively isolates the vibration of the engine set from the ground. When an earthquake occurs, the hydraulic device starts to work, raising the top plate to the limit limit and locking the vibration isolator. At this time, the stiffness of the entire system increases, thereby reducing the amplification effect of the earthquake and reducing the impact of the earthquake on the equipment above the vibration isolator.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to a vibration isolator and vibration isolator system. Background Technology

[0002] Vibration isolators are elastic elements that connect equipment and foundations to reduce and eliminate vibrational forces transmitted from the equipment to the foundation and vibrations transmitted from the foundation to the equipment.

[0003] Currently, most diesel generator sets use metal springs or rubber vibration isolators. Installing vibration isolators lowers the overall frequency of the generator set, effectively reducing the impact of engine and motor vibrations on the ground. However, these are generally not effective attenuation devices for low-frequency signals caused by earthquakes. In fact, earthquakes amplify the vibrations through the isolators, making them ineffective at isolating external vibrations. Summary of the Invention

[0004] The purpose of this invention is to provide a vibration isolator and vibration isolator system that can effectively cope with earthquakes.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Vibration isolators, including:

[0007] A base plate, with a top plate provided above the base plate;

[0008] A hydraulic device is disposed between the base plate and the top plate;

[0009] A first elastic element, wherein a plurality of first elastic elements are disposed between the base plate and the top plate; and

[0010] A limiting assembly includes a guide and a limiting member. One end of the guide is connected to the base plate and / or the hydraulic device, and the other end of the guide passes through the top plate. The limiting member is mounted on the guide and is located above the top plate. The hydraulic device is used to push the top plate upward.

[0011] Under normal operating conditions, the hydraulic system is not activated, and the vibration isolators effectively isolate the engine and generator from ground vibrations. When an earthquake occurs, the hydraulic system activates, raising the top plate to its limit and locking the vibration isolators. At this time, the stiffness of the vibration isolators increases, thereby increasing the stiffness of the entire system, reducing the amplification of earthquakes and mitigating the impact of earthquakes on the equipment above the vibration isolators.

[0012] Preferably, the guide is located at the center of the base plate and is perpendicular to the base plate.

[0013] The aforementioned guide components guide the top plate, allowing it to move vertically.

[0014] Preferably, the guide is a screw, the limiting member is a nut, and the nut is threadedly connected to the screw.

[0015] The nut is screwed onto the screw rod, and the limit distance can be flexibly adjusted by adjusting the nut.

[0016] Preferably, a second elastic element is sleeved on the guide member, and the top plate is connected to the second elastic element.

[0017] The second elastic element can both assist in the operation and prevent the top plate from directly rubbing against the guide element, thus avoiding wear and tear.

[0018] It incorporates safety features to handle malfunctions, and both sets of hydraulic cylinders can operate independently.

[0019] Preferably, the hydraulic device includes:

[0020] case;

[0021] Two sets of hydraulic cylinders are disposed within the housing;

[0022] The cover plate is connected to the pistons of both sets of hydraulic cylinders, and the cover plate can abut against the top plate.

[0023] Connecting two sets of hydraulic cylinders into a single unit via a housing provides sufficient power and more stable support.

[0024] Preferably, the guide passes through the cover plate and extends into the housing, and the guide is positioned at the center of symmetry of the two sets of hydraulic cylinders.

[0025] The above configuration makes the hydraulic cylinder's supporting force on the top plate more uniform.

[0026] Preferably, the first elastic element includes a spring, with its two ends connected to the top plate and the bottom plate, respectively.

[0027] Springs have a simple structure, low cost, and are convenient for wide application.

[0028] Preferably, the plurality of the first elastic elements are evenly distributed around the circumference of the hydraulic device.

[0029] The above configuration ensures that each first elastic element is subjected to uniform force.

[0030] Preferably, the bottom plate and the top plate have the same area, and the projections of the bottom plate and the top plate in the vertical direction coincide.

[0031] It balances stability and floor space requirements.

[0032] A vibration isolator system includes a base, a plurality of vibration isolators disposed on the base, a top plate of each vibration isolator being connected to the base, a guide member being disposed through the base, and a limiting member being capable of abutting against the top plate or the top plate abutting against the limiting member through the base;

[0033] It also includes an oil supply device for supplying oil to the hydraulic device.

[0034] This vibration isolator system can achieve vibration isolation through the aforementioned vibration isolators; moreover, it can reduce the amplification effect of earthquakes and reduce the impact of earthquakes on the upper equipment of the vibration isolators.

[0035] The beneficial effects of this invention are:

[0036] This invention provides a vibration isolator. Under normal operating conditions, the hydraulic system is not activated, and the isolator effectively isolates the vibrations from the engine and generator on the ground. When an earthquake occurs, the hydraulic system activates, raising the top plate to its limit and locking the isolator. At this time, the stiffness of the isolator increases, thereby increasing the stiffness of the entire system, reducing the amplification of the earthquake and mitigating the impact of the earthquake on the equipment above the isolator.

[0037] The present invention also provides a vibration isolator system, including the vibration isolator described above, which can achieve the vibration isolation effect; and during an earthquake, it can reduce the amplification effect of the earthquake and reduce the impact of the earthquake on the upper equipment of the vibration isolator. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a vibration isolator according to a specific embodiment of the present invention;

[0039] Figure 2 This is a partial schematic diagram of a vibration isolator according to a specific embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the vibration isolator system according to a specific embodiment of the present invention;

[0041] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0042] In the picture:

[0043] 1. Vibration isolator; 11. Base plate; 12. Top plate; 13. Hydraulic device; 131. Housing; 132. Cover plate; 133. Hydraulic cylinder; 14. First elastic element; 15. Limiting assembly; 151. Guide element; 152. Limiting element; 16. Second elastic element; 17. Fixing element;

[0044] 2. Base;

[0045] 3. Oil supply equipment. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] Currently, most diesel generator sets use metal springs or rubber vibration isolators. Installing vibration isolators lowers the overall frequency of the generator set, effectively reducing the impact of engine and motor vibrations on the ground. However, these are generally not effective attenuation devices for low-frequency signals caused by earthquakes. In fact, earthquakes amplify the vibrations through the isolators, making them ineffective at isolating external vibrations.

[0051] Therefore, the vibration isolator provided in this embodiment can effectively cope with earthquakes. Figure 1As shown, the vibration isolator 1 includes a base plate 11, a top plate 12, a hydraulic device 13, a first elastic element 14, and a limiting assembly 15. The top plate 12 is disposed above the base plate 11; the hydraulic device 13 is disposed between the base plate 11 and the top plate 12; there are multiple first elastic elements 14 disposed between the base plate 11 and the top plate 12; the limiting assembly 15 includes a guide element 151 and a limiting element 152. One end of the guide element 151 is connected to the base plate 11 and / or the hydraulic device 13, and the other end of the guide element 151 passes through the top plate 12. The limiting element 152 is installed on the guide element 151 and is located above the top plate 12. The hydraulic device 13 is used to push the top plate 12 upward.

[0052] Under normal operating conditions, the hydraulic device 13 is not in operation, and the vibration isolator 1 effectively isolates the equipment from ground vibrations. When an earthquake occurs, the hydraulic device 13 starts to work, raising the top plate 12 to its limit and locking the vibration isolator 1. At this time, the stiffness of the vibration isolator 1 increases, which in turn increases the stiffness of the entire system, thereby reducing the amplification effect of the earthquake and reducing the impact of the earthquake on the equipment above the vibration isolator 1.

[0053] In this embodiment, the guide member 151 is a screw rod, which is located at the center of the base plate 11 and perpendicular to the base plate 11. The limiting member 152 is a nut, which is screwed onto the screw rod. By tightening the nut, the nut can move along the length of the screw rod. The above structure not only limits the direction of movement of the top plate 12, but also allows for flexible adjustment of the limiting distance by tightening the nut, thereby expanding the applicable range.

[0054] like Figure 2 As shown, a second elastic element 16 is sleeved on the guide member 151, and the top plate 12 is connected to the second elastic element 16. The second elastic element 16 can assist the function of the first elastic element 14, and at the same time avoid direct frictional contact between the top plate 12 and the guide member 151, effectively reducing wear.

[0055] Preferably, the hydraulic device 13 includes a housing 131, hydraulic cylinders 133, and a cover plate 132. There are two sets of hydraulic cylinders 133 housed within the housing 131, and the cover plate 132 is connected to the pistons of the two sets of hydraulic cylinders 133. Connecting the two sets of hydraulic cylinders 133 into a single unit via the housing 131 allows the two sets of hydraulic cylinders 133 to provide sufficient power and more stable support. In other embodiments, the hydraulic device 13 may simply consist of two sets of hydraulic cylinders 133, which are not connected to each other, achieving the same effect.

[0056] Optionally, the guide member 151 is positioned at the symmetrical center of the two sets of hydraulic cylinders 133, which can ensure that the top plate 12 is subjected to uniform force from the hydraulic cylinders 133. The guide member 151 can be positioned on the bottom plate 11, penetrating through the housing 131 and the cover plate 132, or it can be positioned on the housing 131, penetrating only through the cover plate 132. The specific arrangement is not specifically limited here.

[0057] Preferably, the first elastic element 14 includes a spring, with its two ends connected to the top plate 12 and the bottom plate 11, respectively. The spring has a simple structure, low cost, and is convenient for wide application.

[0058] Furthermore, multiple first elastic elements 14 are evenly distributed around the circumference of the hydraulic device 13, so that each first elastic element 14 is subjected to uniform force when the top plate 12 moves.

[0059] Optionally, the base plate 11 and the top plate 12 have equal areas, and their projections along the vertical direction coincide. This balances stability and floor space requirements.

[0060] To facilitate the installation of the vibration isolator 1 and the equipment, multiple through holes are provided on the top plate 12, and the vibration isolator 1 and the equipment are connected by fastener 17 passing through the through holes.

[0061] This embodiment also provides a vibration isolator system, including the vibration isolator 1 described above, such as... Figure 3 and Figure 4 As shown, the vibration isolator system includes a base 2, multiple vibration isolators 1, and an oil supply device 3. The engine unit requiring vibration isolation is placed on the base 2, and the vibration isolators 1 are arranged in an array on both sides of the base 2. The oil supply device 3 is connected to the hydraulic device 13 of the vibration isolators 1 and is used to supply oil to the hydraulic device 13. The opening and closing of the oil supply device 3 is controlled by a solenoid valve.

[0062] Specifically, mounting holes are provided on the base 2. The mounting holes on the base 2 are connected and fixed by the fastener 17 through the through hole of the top plate 12 and the mounting holes on the base 2. In this embodiment, screws and nuts are used for connection and fixation. In other embodiments, other connection methods can be used to achieve the same effect, which are not limited here.

[0063] Furthermore, the guide member 151 is disposed through the base 2, and the limiting member 152 can abut against the top plate 12, or the top plate 12 abuts against the limiting member 152 through the base 2. Specifically, the base 2 is provided with a through hole, the size of which is larger than the size of the limiting member 152. The limiting member 152 can pass freely through the through hole, and the abutment between the limiting member 152 and the top plate 12 serves to limit the position of both the top plate 12 and the base 2. Alternatively, the limiting member 152 can be disposed above the base 2, and the size of the through hole on the base 2 is smaller than the size of the limiting member 152, so that the top plate 12 abuts against the limiting member 152 through the base 2 to limit the position of the base 2. In this embodiment, the size of the through hole is larger than the size of the limiting member 152, and the top plate 12 directly abuts against the limiting member 152 to limit the position of the base 2.

[0064] During operation, under normal operating conditions, the hydraulic device 13 does not work, and the top plate 12 does not contact the hydraulic device 13 or the limiting member 152. The vibration isolation work is carried out by the first elastic member 14 and the second elastic member 16 reciprocating between the top plate 12 and the hydraulic device 13 along the guide member 151.

[0065] When an earthquake occurs, the solenoid valve controls the oil supply device 3 to supply oil to the hydraulic cylinder 133. The piston of the hydraulic cylinder 133 rises and pushes the top plate 12 to the limit member 152 after it comes into contact with the top plate 12, locking the vibration isolator 1. At this time, the stiffness of the vibration isolator 1 increases, reducing the amplification effect of the earthquake and reducing the impact of the earthquake on the upper equipment.

[0066] After the earthquake, the solenoid valve controls the piston of hydraulic cylinder 133 to descend, and the first elastic element 14 and the second elastic element 16 drive the top plate 12 to reset and descend, restoring normal working conditions.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vibration isolator, characterized in that, include: A base plate (11) is provided above the base plate (11). A hydraulic device (13) is disposed between the base plate (11) and the top plate (12); A first elastic element (14), a plurality of first elastic elements (14) are disposed between the bottom plate (11) and the top plate (12); and The limiting component (15) includes a guide (151) and a limiting component (152). One end of the guide (151) is connected to the base plate (11) and / or the hydraulic device (13), and the other end of the guide (151) passes through the top plate (12). The limiting component (152) is mounted on the guide (151) and is located above the top plate (12). The hydraulic device (13) is used to push the top plate (12) upward. The hydraulic device (13) includes: Casing (131); Two sets of hydraulic cylinders (133) are disposed inside the housing (131); The cover plate (132) and the pistons of the two sets of hydraulic cylinders (133) are connected to the cover plate (132), and the cover plate (132) can abut against the top plate (12); The guide member (151) is fitted with a second elastic member (16), and the top plate (12) is connected to the second elastic member (16); Under normal operating conditions, the hydraulic device (13) does not work, and the top plate (12) does not contact the hydraulic device (13) or the limiting member (152). The vibration isolation work is performed by the first elastic member (14) and the second elastic member (16) reciprocating between the top plate (12) and the hydraulic device (13) along the guide member (151). When an earthquake occurs, the solenoid valve controls the oil supply device (3) to supply oil to the hydraulic cylinder (133). The piston of the hydraulic cylinder (133) rises and pushes the top plate (12) to the limiting member (152) after it comes into contact with the top plate (12), thus locking the vibration isolator. After the earthquake, the solenoid valve controls the piston of the hydraulic cylinder (133) to descend, and the first elastic element (14) and the second elastic element (16) drive the top plate (12) to reset and descend, restoring normal operation.

2. The vibration isolator according to claim 1, characterized in that, The guide (151) is located at the center of the base plate (11) and is perpendicular to the base plate (11).

3. The vibration isolator according to claim 1, characterized in that, The guide (151) is a screw, and the limiting member (152) is a nut, which is threadedly connected to the screw.

4. The vibration isolator according to claim 1, characterized in that, The guide (151) passes through the cover plate (132) and extends into the housing (131), and the guide (151) is located at the center of symmetry of the two sets of hydraulic cylinders (133).

5. The vibration isolator according to any one of claims 1-4, characterized in that, The first elastic element (14) includes a spring, the two ends of which are respectively connected to the top plate (12) and the bottom plate (11).

6. The vibration isolator according to any one of claims 1-4, characterized in that, Multiple first elastic elements (14) are evenly distributed around the circumference of the hydraulic device (13).

7. The vibration isolator according to any one of claims 1-4, characterized in that, The bottom plate (11) and the top plate (12) have the same area, and the projections of the bottom plate (11) and the top plate (12) in the vertical direction coincide.

8. A vibration isolator system, characterized in that, The device includes a base (2) and a plurality of vibration isolators as described in any one of claims 1-7 disposed on the base (2), wherein the top plate (12) of the vibration isolator is connected to the base (2), the guide (151) is disposed through the base (2), and the limiting member (152) is capable of abutting against the top plate (12) or the top plate (12) abutting against the limiting member (152) through the base (2); It also includes an oil supply device (3) for supplying oil to the hydraulic device (13).

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