Metal rubber damping shock absorber

Abstract

The utility model relates to the technical field of equipment vibration reduction, and discloses a metal rubber damping shock absorber which comprises a foundation bolt embedded in a concrete foundation, a radial metal rubber damper is sleeved on the outer side of the foundation bolt, an axial metal rubber damper is sleeved on the outer side of the radial metal rubber damper, and the axial metal rubber damper is sleeved on the outer side of the axial metal rubber damper. The outer side of the radial metal rubber damper is sleeved with a connecting plate located at the upper end of the axial metal rubber damper, and the outer side of the foundation bolt is sleeved with a disc spring located at the upper end of the radial metal rubber damper. According to the utility model, the radial metal rubber damping and the axial metal rubber damping are used for damping the vibration of the large-scale equipment mounted on the equipment base plate, so that the effect of reducing the axial and radial vibration of the large-scale equipment can be achieved, the limiting effect can also be achieved, and the rotation and movement of the large-scale equipment can be prevented; the connecting plate is fixed through the nut and the disc spring, the nut can be prevented from loosening, and the effect of reducing high-frequency vibration is achieved; the damping device has an excellent damping effect and is long in service life.

Description

Technical Field

[0001] This utility model relates to the field of equipment vibration reduction technology, specifically a metal rubber damping vibration damper. Background Technology

[0002] Heavy rotating equipment such as flywheels or variable frequency magnetic levitation compressors used in large energy storage systems experience significant high-frequency and low-frequency vibrations during normal operation due to their high and constantly changing rotational speeds. Because these devices are typically vertical and have heavy rotors, axial vibrations are not only transmitted downwards and to the surrounding area through the foundation, but also tangential vibrations due to rotor acceleration and deceleration. Significant radial vibrations also occur, especially when the rotor's manufacturing quality is poor and its imbalance is large. To prevent damage to the equipment and foundation caused by vibration, vibration dampers are typically installed on the base plate, such as rubber dampers or vibration-damping rafts. Rubber dampers are the simplest and most widely used, but rubber itself has limitations such as poor resistance to high and low temperatures, weathering, oil, and acids and alkalis, requiring periodic replacement and complicating the maintenance of heavy equipment.

[0003] A Chinese patent discloses a large vibration damper that is easy to assemble (authorization announcement number CN201100363Y). This patented technology is beneficial for the assembly and alignment of the vibration damper, effectively solving the problem of aligning and assembling the vibration damper on the machine tool, shortening the assembly time of the vibration damper, improving labor efficiency, and reducing the labor intensity of assembly workers. However, its vibration damping effect is not good and its service life is not long. Utility Model Content

[0004] The purpose of this invention is to provide a metal-rubber damping shock absorber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A metal-rubber damping vibration damper includes an anchor bolt embedded in a concrete foundation. A radial metal-rubber damper is sleeved on the outside of the anchor bolt. An axial metal-rubber damper is sleeved on the outside of the radial metal-rubber damper. A connecting plate is sleeved on the outside of the radial metal-rubber damper at the upper end of the axial metal-rubber damper. A base plate is sleeved on the outside of the radial metal-rubber damper at the lower end of the axial metal-rubber damper. A disc spring is sleeved on the outside of the anchor bolt at the upper end of the radial metal-rubber damper. A threaded head is provided at the upper end of the anchor bolt, and a set of nuts is engaged on the threaded head.

[0007] As a further embodiment of this utility model: the lower end of the anchor bolt is embedded in the concrete foundation in a hook shape, and a pre-embedded steel plate is sleeved on the upper end of the concrete foundation on the outside of the anchor bolt.

[0008] As a further embodiment of this utility model: the lower ends of the base plate and the radial metal rubber damper are both located at the upper ends of the pre-embedded steel plate, and the lower ends of the disc spring are located at the upper ends of the radial metal rubber damper and the connecting plate, respectively.

[0009] As a further improvement of this utility model, the disc spring is made of one of the following materials: spring steel, stainless steel, or high-elasticity alloy steel.

[0010] As a further embodiment of this utility model: a groove is provided in the middle of the upper end of the base plate, and the lower end of the axial metal rubber damper is embedded in the groove.

[0011] As a further embodiment of this utility model: a device base plate is provided on one side of the upper end of the connecting plate, and threaded holes are provided in both the connecting plate and the device base plate in the same vertical direction, and fastening bolts are installed in the threaded holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention reduces vibration of large equipment mounted on a base plate by using radial and axial metal rubber damping. This reduces axial and radial vibrations and also acts as a limit to prevent rotation and movement of the equipment. The connecting plate is fixed with nuts and disc springs, which prevents the nuts from loosening and also reduces high-frequency vibrations. As a result, it has excellent vibration reduction effect and a long service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a metal-rubber damping vibration absorber.

[0015] In the diagram: 1. Nut; 2. Disc spring; 3. Radial metal rubber damper; 4. Connecting plate; 5. Axial metal rubber damper; 6. Base plate; 7. Embedded steel plate; 8. Anchor bolt; 9. Concrete foundation; 10. Fastening bolt; 11. Equipment base plate. Detailed Implementation

[0016] Please see Figure 1In this embodiment of the invention, a metal rubber damping vibration damper includes anchor bolts 8 embedded in a concrete foundation 9. A radial metal rubber damper 3 is sleeved on the outside of the anchor bolts 8, and an axial metal rubber damper 5 is sleeved on the outside of the radial metal rubber damper 3. A connecting plate 4 is sleeved on the outside of the radial metal rubber damper 3 at the upper end of the axial metal rubber damper 5, thereby reducing axial and radial vibrations and also limiting movement to prevent the rotation and movement of large equipment. A base plate 6 is sleeved on the outside of the radial metal rubber damper 3 at the lower end of the axial metal rubber damper 5. A disc spring 2 is sleeved on the outer side of the radial metal rubber damper 3 at the upper end, and a threaded head is provided on the upper end of the anchor bolt 8. A set of nuts 1 are engaged on the threaded head. Both the radial metal rubber damper 3 and the axial metal rubber damper 5 are made of stainless steel wire wound on rubber and pressed into shape. Their size and damping value are determined according to the size, weight and vibration of the large equipment on the equipment base plate 11. Thus, the radial metal rubber damper 3 and the axial metal rubber damper 5 not only have the excellent vibration reduction characteristics of rubber, but also overcome the shortcomings of rubber. They can be used in various harsh environments and have a long service life.

[0017] Preferably, the lower end of the anchor bolt 8 is embedded in the concrete foundation 9 in a hook shape, and a pre-embedded steel plate 7 is sleeved on the upper end of the concrete foundation 9 on the outside of the anchor bolt 8. The anchor bolt 8 is firmly fixed by the concrete foundation 9, ensuring that the anchor bolt 8 will not loosen or shake when the equipment base plate 11 vibrates.

[0018] Preferably, the lower ends of the base plate 6 and the radial metal rubber damper 3 are both located at the upper ends of the embedded steel plate 7. The embedded steel plate 7 supports the base plate 6 and the radial metal rubber damper 3, preventing the lower ends of the base plate 6 and the radial metal rubber damper 3 from being subjected to uneven force. The lower ends of the disc spring 2 are located at the upper ends of the radial metal rubber damper 3 and the connecting plate 4, respectively. The disc spring 2 is fixed by a set of nuts 1, so that the disc spring 2 presses on the radial metal rubber damper 3 and the connecting plate 4. The compression of the nuts 1 causes the disc spring 2 to deform, which can prevent the nuts 1 from loosening and also reduce high-frequency vibration.

[0019] Preferably, the disc spring 2 is made of one of spring steel, stainless steel, or high-elasticity alloy steel. If the disc spring 2 is made of spring steel, it will deform under pressure and automatically return to its original shape after the pressure is released.

[0020] Preferably, a groove is provided in the middle of the upper end of the base plate 6, and the lower end of the axial metal rubber damper 5 is embedded in the groove, thereby reducing axial vibration.

[0021] Preferably, a base plate 11 is provided on one side of the upper end of the connecting plate 4, and threaded holes are provided on both the connecting plate 4 and the base plate 11 in the same vertical direction. Fastening bolts 10 are installed in the threaded holes, and the base plate 11 is fixedly installed on the connecting plate 4 by means of the fastening bolts 10. At least four connecting plates 4 are provided at the four corners of the base plate 11, so that at least four connecting plates 4 are installed at the four corners of the base plate 11, so that the base plate 11 is kept in balance, thereby realizing the stable vibration reduction of large equipment installed on the base plate 11.

[0022] The working principle of this utility model is as follows: First, at least four concrete foundations 9 are poured at the locations where large equipment needs to be placed in the factory building. Before pouring the concrete foundations 9, the lower ends of the anchor bolts 8 are placed inside the concrete foundations 9. After the concrete foundations 9 are poured, before the concrete initially sets, the pre-embedded steel plates 7 are fitted onto the anchor bolts 8, tightly against the concrete foundations 9. After the concrete foundations 9 reach their design strength, the radial metal rubber damper 3, the base plate 6, the axial metal rubber damper 5, the connecting plate 4, and the radial metal rubber damper 3 are sequentially fitted onto the anchor bolts 8. Then, a set of screws... Tighten the nut 1 onto the threaded head of the upper end of the anchor bolt 8, causing the disc spring 2 to deform under pressure; then, fix the equipment base plate 11 onto the connecting plate 4 using the fastening bolt 10, and finally install the large equipment onto the equipment base plate 11; when the large equipment vibrates, the vibration is transmitted to the connecting plate 4 through the equipment base plate 11 and the connecting plate 4, and then to the radial metal rubber damper 3 and the axial metal rubber damper 5. The radial metal rubber damper 3 and the axial metal rubber damper 5 simultaneously reduce the vibration of the large equipment in the radial and axial directions, thereby achieving stable operation of the large equipment.

[0023] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A metal-rubber damping vibration absorber, comprising anchor bolts (8) embedded in a concrete foundation (9), characterized in that, A radial metal rubber damper (3) is sleeved on the outside of the anchor bolt (8), and an axial metal rubber damper (5) is sleeved on the outside of the radial metal rubber damper (3). A connecting plate (4) is sleeved on the outside of the radial metal rubber damper (3) at the upper end of the axial metal rubber damper (5), and a base plate (6) is sleeved on the outside of the radial metal rubber damper (3) at the lower end of the axial metal rubber damper (5). A disc spring (2) is sleeved on the outside of the anchor bolt (8) at the upper end of the radial metal rubber damper (3), and a threaded head is provided on the upper end of the anchor bolt (8). A set of nuts (1) is engaged on the threaded head.

2. The metal-rubber damping vibration absorber according to claim 1, characterized in that, The lower end of the anchor bolt (8) is embedded in the concrete foundation (9) in a hook shape, and a pre-embedded steel plate (7) is sleeved on the upper end of the concrete foundation (9) on the outside of the anchor bolt (8).

3. The metal-rubber damping vibration absorber according to claim 1, characterized in that, The lower ends of the base plate (6) and the radial metal rubber damper (3) are both located at the upper end of the embedded steel plate (7), and the lower ends of the disc spring (2) are located at the upper ends of the radial metal rubber damper (3) and the connecting plate (4), respectively.

4. The metal-rubber damping vibration absorber according to claim 1, characterized in that, The disc spring (2) is made of one of the following materials: spring steel, stainless steel, or high-elasticity alloy steel.

5. A metal-rubber damping vibration absorber according to claim 1, characterized in that, A groove is provided in the middle of the upper end of the base plate (6), and the lower end of the axial metal rubber damper (5) is embedded in the groove.

6. The metal-rubber damping vibration absorber according to claim 1, characterized in that, A device base plate (11) is provided on one side of the upper end of the connecting plate (4), and threaded holes are provided on both the connecting plate (4) and the device base plate (11) in the same vertical direction, and fastening bolts (10) are installed in the threaded holes.

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