CN111925570A

CN111925570A - Isolator inner skleeve and rubber spring subassembly thereof

Info

Publication number: CN111925570A
Application number: CN202010922586.2A
Authority: CN
Inventors: 谭广洲
Original assignee: Beijing Doredo Vibration Control Equipment Co ltd
Current assignee: Dao Erdao Technology Co.,Ltd.
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2020-11-13

Abstract

The invention protects an inner sleeve of a vibration isolator and a rubber spring assembly thereof, and belongs to the technical field of vibration reduction and noise reduction of rail transit. The rubber spring component disclosed by the invention comprises the following components in parts by weight: 100 parts of natural rubber, 4-10 parts of zinc oxide, 1-2 parts of plasticizer, 1 part of protective wax, 1-20 parts of antioxidant, 3 parts of anti-aging agent, 1-2 parts of anti-reducing agent, 0.5-2 parts of accelerator and the balance of S. An inner sleeve of a vibration isolator is characterized in that an inner sleeve base is composed of an inner bottom plate, a lower pipe and a lower spring baffle pipe, the lower spring baffle pipe of the inner sleeve base is of a hollow structure, and solid damping materials are filled in the lower spring baffle pipe, wherein the solid damping materials are two selected from butyl, polyvinyl chloride and epoxy resin and are mixed according to the weight ratio of 1: 1. Compared with the traditional steel spring vibration isolator, the damping structure has good integrity and good energy absorption effect. The static stiffness of the spring can be adjusted by the formula and the number of layers of the cord fabric, so that the flexibility is stronger.

Description

Isolator inner skleeve and rubber spring subassembly thereof

Technical Field

The invention relates to the technical field of vibration reduction and noise reduction of rail transit, in particular to a rubber spring assembly and an inner sleeve of a vibration isolator using the rubber spring assembly.

Background

Along with social development and technological progress, the urban rail transit development is more and more emphasized in each big city. Urban rail transit construction, especially underground railway construction also expands greatly. However, vibration isolation and damping have been a core problem in urban rail transit.

The floating track bed system based on the steel spring vibration isolation device is widely applied to urban rail transit lines due to the characteristics of good vibration isolation effect, long service life, stable vibration isolation effect and the like. However, the traditional steel spring vibration isolation device adopts the structure that the steel spring is placed in the inner sleeve, then the damping agent is filled, and the sandwich layer damping structure is manufactured, and although the inner sleeve has certain static stiffness and damping coefficient, the inner sleeve has heavier mass, high cost and complex production process, and is not convenient for workers to maintain and replace.

Disclosure of Invention

The invention aims to solve the technical problem of providing a rubber spring assembly for an inner sleeve of a vibration isolator, which can control the manufacturing process and is convenient to replace.

In order to achieve the purpose, the invention adopts the following technical scheme:

a rubber spring component comprises the following components in parts by weight: 100 parts of natural rubber, 4-10 parts of zinc oxide, 1-2 parts of plasticizer, 1 part of protective wax, 1-20 parts of antioxidant, 3 parts of anti-aging agent, 1-2 parts of anti-reducing agent, 0.5-2 parts of accelerator and the balance of S.

Preferably, the rubber spring component is produced by the steps of taking natural rubber as a base material, adding an additive, mixing, banburying rubber, refining to obtain rubber sheets, vulcanizing and the like.

Furthermore, the rubber spring assembly is formed by vulcanizing a plurality of layers of rubber sheets, a plurality of layers of steel plates and cord fabrics which are arranged at intervals are arranged between the rubber sheets, and the edge of the rubber spring assembly is in a corrugated shape.

The invention discloses a vibration isolator inner sleeve which is another subject of protection, and adopts the following technical scheme:

the vibration isolator inner sleeve comprises an inner sleeve base, an inner sleeve top cover and a rubber spring assembly, wherein the inner sleeve top cover comprises an inner top plate, an upper pipe and an upper spring baffle pipe; the rubber spring assembly is supported and clamped between the inner cylinder base and the inner cylinder top cover, the periphery of the joint of the inner cylinder top cover and the inner cylinder base is hermetically packaged by a rubber ring, and the solid damping material is selected from two of butyl, polyvinyl chloride and epoxy resin and is prepared by mixing the two materials according to the weight ratio of 1: 1.

Preferably, a layer of spring adhesive is arranged between the upper end face of the rubber spring assembly and the top cover of the inner barrel.

Furthermore, the rubber rings are positioned on the two side edges of the top cover and the base of the inner cylinder and are hooped by a pair of stainless steel hoops.

Further, the static rigidity of the inner sleeve of the vibration isolator is 5.3 +/-0.20 kN/mm.

Further, the damping ratio of the inner sleeve of the vibration isolator is 5.5% -10%.

The invention has the beneficial effects that:

1. compared with the process of filling the damping agent into the steel spring, the rubber spring has the advantages of light weight, low cost and simple and convenient production;

2. the rubber spring and the damping agent belong to non-metal high polymer materials, and the rubber has the characteristics of high elasticity, sound insulation, vibration isolation and fatigue resistance, so that the prepared sandwich layer damping structure has good integrity and energy absorption effect;

3. the rubber spring adopts a steel plate and cord fabric as frameworks, and the edge is in a corrugated shape, so that the rubber spring has higher bearing capacity and is more durable;

4. the static stiffness of the spring can be adjusted by the formula and the number of layers of the cord fabric, so that the flexibility is stronger. After 500 ten thousand cycles of fatigue test under the action of cyclic load, no cracks or fractures appear.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view of the inner barrel head of the present invention;

FIG. 4 is a schematic cross-sectional view of the inner barrel base of the present invention;

fig. 5 is a schematic view of a cross-sectional view of the rubber spring according to the present invention.

In the attached drawing, 1 is an inner cylinder top cover, 2 is a spring adhesive, 3 is a rubber ring, 4 is a stainless steel tightening hoop, 5 is a rubber spring assembly, 6 is a solid damping material, 7 is an inner cylinder base, 8 is an inner top plate, 9 is an upper pipe, 10 is an upper spring blocking pipe, 11 is an inner bottom plate, 12 is a lower pipe, 13 is a lower spring blocking pipe, 14 is a rubber sheet, 15 is a steel plate, and 16 is the edge of the rubber spring assembly.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

As shown in FIG. 5, the rubber spring assembly 5 of the present invention is produced by the steps of mixing natural rubber as a base material with additives, banburying the rubber, refining to obtain rubber pieces, vulcanizing, etc.; the rubber spring component 5 is formed by vulcanizing a plurality of layers of rubber sheets 14, a plurality of layers of steel plates 15 and cord fabrics (not shown in the figure) which are arranged at intervals are arranged among the rubber sheets 14, and the edge 16 of the rubber spring component is in a corrugated shape. The rubber sheet 14 comprises the following components in parts by weight: 100 parts of natural rubber, 7 parts of zinc oxide, 2 parts of plasticizer, 1 part of protective wax, 10 parts of antioxidant, 3 parts of anti-aging agent, 1 part of anti-reducing agent, 1 part of accelerator and the balance of S.

Example two

As shown in fig. 5, the rubber spring assembly 5 of the present invention is different from the first embodiment in that the rubber sheet 14 is composed of the following components in parts by weight: 100 parts of natural rubber, 4 parts of zinc oxide, 1 part of plasticizer, 1 part of protective wax, 20 parts of antioxidant, 3 parts of anti-aging agent, 2 parts of anti-reducing agent, 0.5 part of accelerator and the balance of S.

EXAMPLE III

As shown in fig. 1 to 4, the inner sleeve of the vibration isolator according to another subject of the present invention includes an inner sleeve base 7, an inner sleeve top cover 1, and a rubber spring assembly 5, wherein the inner sleeve top cover 1 includes an inner top plate 8, an upper pipe 9, and an upper spring blocking pipe 10, the inner sleeve base 7 includes an inner bottom plate 11, a lower pipe 12, and a lower spring blocking pipe 13, the lower spring blocking pipe 13 of the inner sleeve base 7 is a hollow structure, the interior of the lower spring blocking pipe is filled with a solid damping material 6, the upper spring blocking pipe 10 of the inner sleeve top cover 1 is embedded in the lower spring blocking pipe 13 of the inner sleeve base 7, and a gap is left between the upper spring blocking pipe 10 and the lower spring blocking pipe 13, and the upper. The rubber spring component 5 is supported and clamped between the inner cylinder base 7 and the inner cylinder top cover 1, the periphery of the joint of the inner cylinder top cover 1 and the inner cylinder base 7 is hermetically packaged by a rubber ring 3, and the solid damping material 6 is prepared by mixing butyl and epoxy resin according to the weight ratio of 1: 1.

A layer of spring adhesive 2 is arranged between the upper end surface of the rubber spring component 5 and the top cover 1 of the inner cylinder.

The rubber ring 3 is positioned at the two side edges of the top cover 1 of the inner cylinder and the base 7 of the inner cylinder and is hooped by a pair of stainless steel hoops 4.

Through fatigue test, the static rigidity of the inner sleeve of the vibration isolator is 5.4 kN/mm. The damping ratio of the inner sleeve of the vibration isolator is 7.5 percent.

Claims

1. A rubber spring component is characterized by comprising the following components in parts by weight: 100 parts of natural rubber, 4-10 parts of zinc oxide, 1-2 parts of plasticizer, 1 part of protective wax, 1-20 parts of antioxidant, 3 parts of anti-aging agent, 1-2 parts of anti-reducing agent, 0.5-2 parts of accelerator and the balance of S.

2. A rubber spring assembly as defined in claim 1, wherein: the rubber spring component is produced by the steps of taking natural rubber as a base material, adding an additive, mixing, banburying rubber, refining to obtain rubber sheets, vulcanizing and the like.

3. A rubber spring assembly as defined in claim 2, wherein: the rubber spring component is formed by vulcanizing a plurality of layers of rubber sheets, a plurality of layers of steel plates and cord fabrics which are arranged at intervals are arranged between the rubber sheets, and the edge of the rubber spring component is corrugated.

4. An inner sleeve of a vibration isolator using the rubber spring assembly as claimed in any one of claims 1 to 3, comprising an inner sleeve base, an inner sleeve top cover and the rubber spring assembly, wherein the inner sleeve top cover is composed of an inner top plate, an upper pipe and an upper spring baffle pipe, the inner sleeve base is composed of an inner bottom plate, a lower pipe and a lower spring baffle pipe, the lower spring baffle pipe of the inner sleeve base is of a hollow structure, the inner part of the lower spring baffle pipe is filled with a solid damping material, the upper spring baffle pipe of the inner sleeve top cover is embedded in the lower spring baffle pipe of the inner sleeve base, a gap is reserved between the upper spring baffle pipe and the lower spring baffle pipe, and the upper spring baffle pipe is; the rubber spring assembly is supported and clamped between the inner cylinder base and the inner cylinder top cover, and the periphery of the joint of the inner cylinder top cover and the inner cylinder base is hermetically packaged by a rubber ring, and the rubber spring assembly is characterized in that the solid damping material is selected from two of butyl, polyvinyl chloride and epoxy resin and is prepared by mixing the two materials according to the weight ratio of 1: 1.

5. The isolator inner sleeve of claim 4, wherein: and a layer of spring adhesive is arranged between the upper end surface of the rubber spring assembly and the top cover of the inner barrel.

6. The isolator inner sleeve of claim 5, wherein: the rubber ring is positioned on the top cover of the inner cylinder and the edges of the two sides of the base of the inner cylinder and is hooped by a pair of stainless steel hoops.

7. The isolator inner sleeve of claim 6, wherein: the static rigidity of the inner sleeve of the vibration isolator is 5.3 +/-0.20 kN/mm.

8. The isolator inner sleeve of claim 6, wherein: the damping ratio of the inner sleeve of the vibration isolator is 5.5% -10%.