Bearing box damping device

Abstract

The utility model belongs to the technical field of bearing box damping, and particularly relates to a bearing box damping device. Comprising a base, a balance weight plate, an elastic piece, a fastening piece and a bottom plate, the elastic piece is installed on the outer side of the base, the bottom plate and the balance weight plate are installed on the elastic piece through the fastening piece, and the base is installed on the bearing box through a bolt; the number of the tuned mass dampers is two, the two tuned mass dampers comprise the first tuned mass damper and the second tuned mass damper, the first tuned mass damper is installed on the bearing box, and the second tuned mass damper is installed on the flange plate. In practical application, the vibration amplitude of the whole bearing box is reduced through mutual matching of the first tuned mass damper and the second tuned mass damper.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing box damping technology field, concretely relates to a bearing seat damping device. BACKGROUND

[0002] The bearing seat is used in many electric power and mechanical industries, and its stable operation is crucial to the safety and reliability of the system. As one of the key factors affecting the health status of equipment, the bearing seat vibration problem has been the focus of the industry for a long time. Traditional vibration control methods, such as strengthening the support structure or adding counterweights, can alleviate vibration to some extent, but often have limited effect and are difficult to meet strict vibration control standards.

[0003] The patent application No. CN202120838511.6 is a kind of two-way tuned mass damper, including mounting frame, damping system and guide device, the mounting frame includes upper connecting plate and lower connecting plate;The damping system includes several suspension elements, several spiral compression springs, several vertical dampers, mass block and several horizontal damping devices, wherein, the suspension element, horizontal damping device and mass block constitute horizontal damping system, the spiral compression spring, vertical damper and mass block constitute vertical damping system;The guide device includes several linear bearings, several linear bearing guide rods and a pair of horizontal sliding bearings. The above-mentioned device reduces the amplitude of the device by damping the horizontal and vertical directions of the bearing seat, and the damping effect of the bearing seat is low, therefore, the technical problem of the prior art is solved by the skilled in the art. SUMMARY

[0004] The technical problem to be solved by the utility model is that the existing bearing seat reduces the amplitude of the device by damping the horizontal and vertical directions of the bearing seat, and the damping effect of the bearing seat is low.

[0005] In order to solve the above technical problems:

[0006] The utility model provides a kind of bearing box damping device, is installed on bearing seat to reduce bearing box vibration, including pedestal, counterweight plate, elastic member, fastener and bottom plate, the elastic member is installed in the outer side of the pedestal, the bottom plate and the counterweight plate are installed on the elastic member by the fastener, the pedestal is installed on the bearing box by bolt;Tuned mass damper is commonly provided with two, including tuned mass damper one and tuned mass damper two, the tuned mass damper one is installed on bearing seat, and the tuned mass damper two is installed on flange plate.

[0007] Further, the first tuned mass damper comprises a base one, a counterweight plate one and an elastic member one, the elastic member one is installed outside the base one, the counterweight plate one, the bottom plate one and the cover plate are installed on the elastic member one through fasteners one; the second tuned mass damper comprises a base two, an elastic member two, a counterweight plate two, fasteners two, a bottom plate two and a connecting member; the elastic member two is installed outside the base two, the bottom plate two is installed on the elastic member two, and the counterweight plate two is installed between the bottom plate one and the bottom plate two through a pin shaft.

[0008] Further, the base is a fixed support structure, and the elastic member is installed on a support surface of the base.

[0009] Further, the elastic member comprises a fixed interface, a mounting interface, a bearing surface and a mounting surface, the fixed interface is located on the bearing surface, and the fixed interface is connected to the bottom plate through the fasteners; the mounting interface is located on the mounting surface, and the mounting interface is used for connecting the base.

[0010] Further, the base is provided with elastic member installation ports, a plurality of elastic member installation ports are arranged on the upper portion of the base, the elastic member installation ports are matched with the mounting interfaces, and the installation ports and the elastic member are connected through bolts.

[0011] Further, the elastic member is a metal spring, TPE, rubber, metal rubber or steel wire rope.

[0012] Further, the counterweight plate is in the shape of a plate or a block.

[0013] The beneficial effects of the present application are as follows:

[0014] The tuned mass damper mainly comprises an elastic member and a counterweight plate, can effectively absorb and convert vibration energy generated during operation, significantly reduces the vibration amplitude of the bearing seat, thereby protects the structural integrity and prolongs the service life, and through reducing vibration, the device helps to maintain the overall stability of the system, avoids performance degradation or equipment damage caused by excessive vibration, and ensures the continuity and reliability of the system operation.

[0015] The counterweight plate can be set in the shape of a plate or a block according to requirements, and the plate-shaped counterweight plate can also increase or decrease in number according to requirements to adapt to the vibration reduction requirements of the bearing seat. DRAWINGS

[0016] Figure 1 is a structural schematic view of the tuned mass damper one of the embodiment of the present application;

[0017] Figure 2 is a schematic view of the base one of the embodiment of the present application;

[0018] Figure 3 is a schematic view of the elastic member one of the embodiment of the utility model;

[0019] Figure 4 is a schematic view of the counterweight plate one of the embodiment of the utility model;

[0020] Figure 5 is a schematic view of the structure of the second tuned mass damper of the embodiment of the utility model;

[0021] Figure 6 is a schematic view of the second base of the embodiment of the utility model;

[0022] Figure 7 is a schematic view of the second bottom plate of the embodiment of the utility model;

[0023] Figure 8 is a schematic view of the second counterweight plate of the embodiment of the utility model;

[0024] Figure 9 is a schematic view of the connecting piece of the embodiment of the utility model;

[0025] Figure 10 is a schematic view of the installation of the embodiment of the utility model.

[0026] Wherein, 1-tuned mass damper one;11-base one;111-mounting port;12-elastic member one;121-bearing surface one;1211-fixed interface one;122-mounting surface one;1221-mounting interface one;13-bottom plate one;14-counterweight plate one;15-cover plate;151-shaft hole;2-tuned mass damper two;21-base two;22-elastic member two;221-bearing surface two;2211-fixed interface two;222-mounting surface two;2221-mounting interface two;23-bottom plate two;24-counterweight plate two;25-connecting piece;3-fastener;4-bearing seat. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with the drawings and specific preferred embodiments.

[0028] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "left side", "right side", "upper part", "lower part" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as a limitation on the utility model. The specific size adopted in the embodiment is only for example to illustrate the technical scheme, and does not limit the protection scope of the utility model.

[0029] Embodiment one: bearing box in use there is vibration phenomenon, this will cause influence to set overall operation, refer to Figure 1 、 Figure 5 、 Figure 10 , it is known that the bearing seat damping device includes two kinds of tuned mass damper, tuned mass damper one 1 is installed in the axial position of bearing seat 4, and tuned mass damper two 2 is installed on the flange plate of bearing seat 4;

[0030] Tuned mass damper one 1 includes base one 11, elastic element one 12, bottom plate one 13, counterweight plate one 14 and cover plate 15;Wherein the base one 11 is connected with the bearing seat 4 through the fastener 3, the elastic element one 12 is installed on the mounting surface of the base one 11, the bottom plate one 13 is installed on the bearing surface one 121 of the elastic element one 12, the counterweight plate one 14 is installed on the bottom plate one 13 through the fastener 3, and the cover plate 15 is fixed on the counterweight plate one 14;

[0031] Tuned mass damper two 2 includes base two 21, elastic element two 22, bottom plate two 23, counterweight plate two 24, fastener 3 and connecting piece 25;The elastic element 22 is installed on the outer side of the base two 21, the bottom plate two 23 is installed on the elastic element two 22, and the counterweight plate two 24 is installed between the bottom plate one 13 and the bottom plate two 23 through the fastener 3;

[0032] When installing tuned mass damper one 1, align the base one 11 with the predetermined position on the bearing seat 4, preliminarily fix, ensure that the horizontal and vertical directions of the base one 11 are correct, align the mounting surface one 122 of the elastic element one 12 with the mounting port 111 on the base one 11, fix the elastic element 12 on the base 11 with bolts, ensure that the mounting surface one 122 completely matches the mounting port 111, preliminarily install the bottom plate one 13 on one side of the bearing surface 121 of the elastic element one 12 through the pin shaft, ensure that when assembling the counterweight plate one 14, the corresponding position of the pin shaft is good, the weight of the counterweight plate one 14 can be designed as a plate according to the vibration characteristics of the bearing seat 4, at this time, multiple counterweight plates one 14 can be stacked according to the needs, or can be designed as a plate for split installation, the counterweight plate one 14 is fixed on the bottom plate one 13 by using the fastener 3, ensure that the connection between the counterweight plate 14 and the bottom plate 13 is stable, avoid additional vibration during operation;

[0033] When installing the tuned mass damper 2, align the base 21 with the threaded holes of the bearing seat 4 flange, and the two bases are symmetrically distributed on the upper and lower sides of the bearing seat 4 flange, and fixed with fasteners 3; fix the mounting surface 222 of the elastic member 22 and the base 21 through the fixing interface 2211 to ensure that the corresponding positions are accurate; connect the bottom plate 23 with the bearing surface 221 of the elastic member 22 through the mounting interface 2221, and use fasteners 3 to penetrate and fix the bottom plates 23 on both sides; place the counterweight plate 24 in the middle of the bottom plates 23 on both sides. The weight of the counterweight plate 24 can be designed to be plate-shaped according to the vibration characteristics of the bearing seat 4. At this time, multiple counterweight plates 24 can be stacked and set as needed, or they can be set to be plate-shaped for split installation;

[0034] The tuned mass damper 2 can be installed at one location or multiple locations. In order to increase mass resonance, the tuned mass dampers 2 can be connected using connectors 25.

[0035] By cooperating with each other, the tuned mass damper 1 and the tuned mass damper 2 are used to tune the energy absorption to reduce the vibration amplitude of the bearing seat 4, and the tuned mass damper 2 is used to tune the energy absorption to reduce the vibration amplitude of the flange, thereby jointly reducing the amplitude of the bearing seat 4 and reducing the impact of vibration on the device.

[0036] Embodiment 2: Six elastic members 12 are provided, evenly distributed on the mounting openings 111 of the base 11, and 28 elastic members 22 are provided corresponding to the mounting openings of the base 2 21;

[0037] In actual use, when the bearing seat 4 vibrates at a specific frequency, the counterweight plate 14 of the tuned mass damper 1 and the counterweight plate 24 of the tuned mass damper 22 will also start to vibrate. The natural frequencies of the tuned mass damper 1 and the tuned mass damper 22 are tuned to match a certain resonant frequency of the bearing seat 4. When the bearing seat 4 vibrates, the tuned mass damper 1 and the tuned mass damper 22 will oscillate at the same frequency. When the vibration frequency of the tuned mass damper 1 and the tuned mass damper 22 is consistent with that of the bearing seat 4, energy exchange will occur between the two. The vibration of the tuned mass damper 1 and the tuned mass damper 22 will absorb part of the vibration energy from the bearing seat 4, which will be converted into heat energy and dissipated through the friction and viscous damping effect inside the tuned mass damper 1 and the tuned mass damper 22, thereby reducing the vibration amplitude of the bearing seat 4.

[0038] Example 3: In order to further reduce the influence of the self-vibration of the tuned mass damper 1 and the tuned mass damper 2 on the device, refer to Figure 3 and Figure 7The shape and material of the elastic member one 12 and the elastic member two 22 can be various, and the main function is to have elasticity and vibration damping, and the form can be metal spring, TPE, rubber, metal rubber, steel wire rope and the like to realize elastic deformation within a certain deformation amount. The elastic member one 12 connects the bottom plate one 13 and the base one 11, and provides restoring force for the counterweight plate one 14. When the counterweight plate one 14 vibrates, the deformation of the elastic member one 12 stores vibration energy, and then releases the energy when the counterweight plate one 14 moves reversely, forming a vibration cycle. The stiffness of the elastic member one 12 determines the natural frequency of the tuned mass damper one 1. By adjusting the stiffness of the elastic member one 12, the tuning frequency of the tuned mass damper one 1 can be changed to match the vibration frequency of the bearing seat 4, so as to reduce the vibration of the bearing seat 4.

[0039] The elastic member two 22 connects the bottom plate two 23 and the base two 21, and provides restoring force for the counterweight plate two 24. When the counterweight plate two 24 vibrates, the deformation of the elastic member two 22 stores vibration energy, and then releases the energy when the counterweight plate two 24 moves reversely, forming a vibration cycle. The stiffness of the elastic member two 22 determines the natural frequency of the tuned mass damper two 2. By adjusting the stiffness of the elastic member two 22, the tuning frequency of the tuned mass damper two 2 can be changed to match the vibration frequency of the bearing seat 4, so as to reduce the vibration of the bearing seat 4.

[0040] By arranging the elastic member one 12 and the elastic member two 22 on the tuned mass damper one 1 and the tuned mass damper two 2 respectively, the influence of the vibration of the tuned mass damper one 1 and the tuned mass damper two 2 on the device is reduced, so as to ensure the stability of the device.

[0041] Embodiment five: in order to further reduce the amplitude of the device, referring to Figure 10 It can be seen that one or more bearing seat vibration reduction devices can be arranged on the bearing seat 4. The arrangement position can be on the bearing seat 4 body or flange or its attached structure. The bearing seat vibration reduction device can be fixed on the bearing seat 4 by bolts or welding.

[0042] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing box vibration reduction device, mounted on a bearing seat to reduce bearing box vibration, characterized in that: It includes a base, a counterweight plate, an elastic member, a fastener and a bottom plate, the elastic member is installed on the outside of the base, the bottom plate and the counterweight plate are installed on the elastic member through the fastener, and the base is installed on the bearing box through bolts; there are two tuned mass dampers, including tuned mass damper 1 and tuned mass damper 2, the tuned mass damper 1 is installed on the bearing seat, and the tuned mass damper 2 is installed on the flange.

2. The bearing box vibration reduction device according to claim 1, characterized in that: The tuned mass damper 1 includes a base 1, a counterweight plate 1 and an elastic member 1, wherein the elastic member 1 is installed on the outside of the base 1, and the counterweight plate 1, the bottom plate 1 and the cover plate are installed on the elastic member 1 through a fastener 1; the tuned mass damper 2 includes a base 2, an elastic member 2, a counterweight plate 2, a fastener 2, a bottom plate 2 and a connecting member; the elastic member 2 is installed on the outside of the base 2, the bottom plate 2 is installed on the elastic member 2, and the counterweight plate 2 is installed between the bottom plate 1 and the bottom plate 2 through a pin shaft.

3. The bearing box vibration reduction device according to claim 1, characterized in that: The base is a fixed supporting structure, and the elastic member is installed on the supporting surface of the base.

4. The bearing box vibration reduction device according to claim 1, characterized in that: The elastic part includes a fixing interface, a mounting interface, a bearing surface and a mounting surface. The fixing interface is located on the bearing surface, and the fixing interface is connected to the base plate through the fastener; the mounting interface is located on the mounting surface, and the mounting interface is used to connect to the base.

5. The bearing box vibration reduction device according to claim 4, characterized in that: The base is provided with an elastic member mounting opening, and a plurality of the elastic member mounting openings are provided on the upper part of the base. The elastic member mounting openings are matched with the mounting interface; the elastic member mounting openings are connected to the elastic member by bolts.

6. The bearing box vibration reduction device according to claim 1, characterized in that: The elastic member is a metal spring, TPE, rubber, metal rubber or steel wire rope.

7. The bearing box vibration reduction device according to claim 1, characterized in that: The counterweight plate is in the shape of a plate or a block.

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