CN111734739B

CN111734739B - Vibration isolation bearing seat utilizing secondary vibration isolation technology

Info

Publication number: CN111734739B
Application number: CN202010617323.0A
Authority: CN
Inventors: 朱霖龙; 刘雅文; 王林艳; 樊亚军; 陈红
Original assignee: Xian Technological University
Current assignee: Xian Technological University
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-11-26
Anticipated expiration: 2040-06-30
Also published as: CN111734739A

Abstract

The invention belongs to the field of machinery, and particularly relates to a vibration isolation bearing seat utilizing a secondary vibration isolation technology. The vibration isolation device provides vibration isolation in multiple directions for the rotary part, is directly arranged at a vibration source, and is not positioned between a foundation and the whole equipment like the vibration isolation of the existing equipment. The technical scheme includes that the bearing comprises a bearing main body, a bearing fixing ring, an inner seat fixing ring and a bearing supporting seat, wherein the bearing main body, the bearing fixing ring and the inner seat fixing ring are sequentially sleeved from inside to outside, and the bearing fixing ring is connected with the inner seat fixing ring through a primary vibration isolation device; the inner seat fixing ring is connected with the bearing supporting seat through a secondary vibration isolation device, and the inner ring of the inner seat fixing ring is provided with a primary plate spring outer ring.

Description

Vibration isolation bearing seat utilizing secondary vibration isolation technology

Technical Field

The invention belongs to the field of machinery, and particularly relates to a vibration isolation bearing seat utilizing a secondary vibration isolation technology.

Background

The bearing is a standard part widely applied to supporting a rotating part in various mechanical products; the bearing seat is a component used for fixing, supporting and positioning the bearing.

Except for machines that work partially with vibrations, vibrations are detrimental to the machine. Vibration can cause the structure to become flexible, and the part is tired prematurely, can produce harm such as noise, small range earthquake simultaneously.

The machinery with the rotary parts can inevitably generate vibration during working, and the generated vibration is particularly serious for certain working conditions with severe working environment, large resistance and instability. Generally, equipment with severe vibration has corresponding vibration isolation measures. Usually, vibration isolation equipment is additionally arranged at a part where a machine is in contact with a foundation, or vibration isolation equipment is arranged at parts of a main working device, a machine frame and the like, but the vibration isolation equipment can only be used for damping the whole working device, the machine frame and other external parts, and internal parts of the device can still generate large vibration to bring harm.

Disclosure of Invention

In view of the above, the present invention provides a vibration isolation bearing seat using a secondary vibration isolation technology, which provides vibration isolation in multiple directions for a rotating member, is directly installed at a vibration source, and directly isolates the vibration source, and is not located between a foundation and the whole device like the vibration isolation of the conventional device.

In order to solve the problems in the prior art, the technical scheme of the invention is as follows: utilize vibration isolation bearing frame of secondary vibration isolation technique, including the bearing main part, its characterized in that: the bearing main body, the bearing fixing ring and the inner seat fixing ring are sequentially sleeved from inside to outside, and the bearing fixing ring and the inner seat fixing ring are connected through a primary vibration isolation device; the inner seat fixing ring is connected with the bearing supporting seat through a secondary vibration isolation device, and the inner ring of the inner seat fixing ring is provided with a primary plate spring outer ring.

Further, a vibration isolation device comprises a primary plate spring and a primary damping block, the primary plate spring is annular in structure, arc-shaped pieces connected through supporting rods are uniformly distributed on the inner wall of the annular, and the primary damping block is bonded between the annular and the arc-shaped pieces.

Further, the secondary vibration isolation device comprises a secondary spring and a secondary damper, and the secondary spring is sleeved on the secondary damper.

Furthermore, the inner seat fixing ring is fixedly connected with a connecting lug, the connecting lug is hinged with one end of the secondary damper, and the other end of the secondary damper is hinged with the bearing supporting seat.

Further, the bearing support seat is of a base type or a round shape.

Further, the secondary vibration isolation device of base type bearing support seat is provided with 3 at least, sets up respectively in the both sides and the bottom of inner fixed seat retainer plate.

Further, the secondary vibration isolation device of circular bearing supporting seat is provided with 3 at least, and the equipartition sets up respectively on the circumference of inner fixed seat retainer plate.

Compared with the prior art, the invention has the following advantages:

1. the bearing seat is an independent and complete device with a vibration reduction structure, and can directly reduce vibration at a vibration source;

2. the bearing seat is highly integrated, can be serialized and selected as a standard component, and the selected equipment does not need to be additionally subjected to vibration damping design or greatly reduces the difficulty of vibration damping design of the whole machine;

3. the primary plate spring is designed to be annular, so that the primary plate spring is simple in structure and easy to process, and can provide vibration damping effects in all directions by one annular circle, and meanwhile, the shape leaves installation space for the damping block;

4. the invention can modify the combination mode of vibration reduction according to the characteristics of the vibration source;

5. the vibration reduction of the invention has omni-directionality, most of the vibration reduction equipment aims at the vertical direction at present, and the vibration reduction of the invention can carry out the omni-directional vibration reduction in a bearing plane;

6. the invention can be made into a large size and a small size, has stronger universality, simple structure and convenient maintenance, and does not have a similar vibration reduction form at present;

7. the secondary vibration isolation part can be made into a round shape and is assembled with the bearing to serve as a bearing assembly, so that the integration is stronger; the bearing can be made into a seat shape, and the installation mode of the bearing can be the same as that of a common bearing seat after the bearing is assembled, so that the universality is stronger;

9. the bearing seat can be changed into different use forms only by replacing the outermost bearing seat base or the bearing seat outer ring under the condition of uniform specification, manufacturers can reduce the production cost, and the multi-model generalization can be achieved by replacing individual parts. When the user buys, one or two accessories can be selected according to actual needs, so that the use is more free and convenient, and the adaptability is stronger.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 3 is a schematic diagram of the present invention;

FIG. 4 is a schematic view of a primary leaf spring;

1. a bearing body;

2-1, an inner seat fixing ring; 2-2, primary plate spring; 2-3, a primary damping block; 2-4, bearing fixing rings; 2-5, hinging the inner seat fixing ring; 2-6, an outer ring of the primary plate spring; 3-1, a bearing seat base; 3-2, secondary spring; 3-3, a secondary damper; 3-4, hinging the base; 3-5, a base type bearing supporting seat, 3-6 and a circular bearing supporting seat;

y1: a primary vibration isolation spring; y2: a secondary vibration isolation spring; y3: an upper mass (vibration source); y4: a primary damper; y5: a lower mass (frame); y6: and a secondary damper.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below 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 are not intended to limit the invention.

The first embodiment is as follows:

a vibration isolation bearing pedestal utilizing a secondary vibration isolation technology comprises a bearing main body 1, a bearing fixing ring 2-4, an inner seat fixing ring 2-1 and a base type bearing supporting seat 3-5, wherein the bearing main body 1, the bearing fixing ring 2-4 and the inner seat fixing ring 2-1 are sequentially sleeved from inside to outside, the bearing fixing ring 2-4 and the inner seat fixing ring 2-1 are connected through a primary plate spring 2-2, as shown in figure 4, the primary plate spring 2-2 is annular in structure, arc-shaped sheets connected through supporting rods are uniformly distributed on the inner wall of the ring, a primary damping block 2-3 is bonded between the ring-shaped sheets, connecting lugs are respectively arranged at two sides and the bottom of the circumference of the inner seat fixing ring 2-1, each connecting lug is provided with an inner seat fixing ring hinge point 2-5, one end of a secondary damper 3-3 is hinged with the hinge point 2-5 of the inner seat fixing ring, one end of the secondary damper 3-3 is hinged with the base type bearing support seat 3-5, and a secondary spring 3-2 is sleeved on the circumference of the secondary damper 3-3.

The inner ring of the inner seat fixing ring 2-1 is provided with a primary plate spring outer ring 2-6.

Example two:

a vibration isolation bearing seat utilizing a secondary vibration isolation technology is disclosed, as shown in figure 2, and comprises a bearing main body 1, a bearing fixing ring 2-4, an inner seat fixing ring 2-1 and a circular bearing support seat 3-6, wherein the bearing main body 1, the bearing fixing ring 2-4 and the inner seat fixing ring 2-1 are sequentially sleeved from inside to outside, and the bearing fixing ring 2-4 and the inner seat fixing ring 2-1 are connected through a primary plate spring 2-2, as shown in figure 4; the structure of the primary plate spring 2-2 is annular, arc-shaped pieces connected through a supporting rod are uniformly distributed on the inner wall of the annular, the primary damping block 2-3 is bonded between the annular and the arc-shaped pieces, 4 connecting lugs are uniformly distributed on the circumference of the inner seat fixing ring 2-1, a base hinge point 3-4 is arranged on each connecting lug, one end of the secondary damper 3-3 is hinged with the base hinge point 3-4, and one end of the secondary damper 3-3 is hinged on the inner wall of the circular bearing supporting seat 3-6.

The principle of the invention is shown in figure 3: y1: a primary vibration isolation spring; y2: a secondary vibration isolation spring; y3: an upper mass (vibration source); y4: a primary damper; y5: a lower mass (frame); y6: the secondary damper is provided with a spring or spring damping or a spring and damping between the upper mass body and the lower mass body, a spring or spring damping is arranged between the lower mass body and the foundation, and the vibration generated by the upper mass body enters secondary vibration isolation equipment, so that harmful vibration can be greatly reduced, and the foundation is hardly influenced.

When the upper mass Y3 vibrates, the primary vibration isolation spring Y1 provides resistance to limit the amplitude of the mass, and the primary damper Y4 provides damping to limit the vibration speed of the mass. At this time, the lower mass Y5 vibrates under the action of the primary vibration isolation spring and the primary damping, the vibration of the lower mass Y5 is downward under the action of the secondary vibration isolation spring Y2 and the secondary damper Y6, and the vibration of the upper mass Y3 of the vibration source is rapidly attenuated under the action of the two-stage spring, the two-stage damping and the middle layer (lower mass), so that the efficient vibration isolation effect is achieved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. Utilize vibration isolation bearing frame of secondary vibration isolation technique, including bearing body (1), its characterized in that: the bearing comprises a bearing main body (1), an inner seat fixing ring (2-4) and a bearing supporting seat, wherein the bearing main body (1), the bearing fixing ring (2-4) and the inner seat fixing ring (2-1) are sequentially sleeved from inside to outside, and the bearing fixing ring (2-4) and the inner seat fixing ring (2-1) are connected through a primary vibration isolation device; the inner seat fixing ring (2-1) is connected with the bearing supporting seat through a secondary vibration isolation device, and the inner ring of the inner seat fixing ring (2-1) is provided with a primary plate spring outer ring (2-6);

the primary vibration isolation device comprises a primary plate spring (2-2) and primary damping blocks (2-3), wherein the primary plate spring (2-2) is annular in structure, arc-shaped pieces connected through supporting rods are uniformly distributed on the annular inner wall, and the primary damping blocks (2-3) are bonded between the annular and the arc-shaped pieces;

the secondary vibration isolation device comprises a secondary spring (3-2) and a secondary damper (3-3), wherein the secondary spring (3-2) is sleeved on the secondary damper (3-3);

the inner seat fixing ring (2-1) is fixedly connected with a connecting lug, the connecting lug is hinged with one end of the secondary damper (3-3), and the other end of the secondary damper (3-3) is hinged with the bearing supporting seat.

2. The vibration isolation bearing housing using the secondary vibration isolation technology as set forth in claim 1, wherein: the bearing support seat is of a base type or a round shape.

3. The vibration isolation bearing housing using the secondary vibration isolation technology according to claim 1 or 2, wherein: at least 3 secondary vibration isolation devices of the base type bearing supporting seat are arranged and are respectively arranged at the two sides and the bottom of the inner seat fixing ring (2-1).

4. The vibration isolation bearing housing using the secondary vibration isolation technology as set forth in claim 3, wherein: the number of the secondary vibration isolation devices of the circular bearing supporting seat is at least 3, and the secondary vibration isolation devices are respectively and uniformly distributed on the circumference of the inner seat fixing ring (2-1).