CN210621451U - Aging-resistant plate type rubber support - Google Patents
Aging-resistant plate type rubber support Download PDFInfo
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- CN210621451U CN210621451U CN201921437907.9U CN201921437907U CN210621451U CN 210621451 U CN210621451 U CN 210621451U CN 201921437907 U CN201921437907 U CN 201921437907U CN 210621451 U CN210621451 U CN 210621451U
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Abstract
The utility model belongs to the rubber support especially indicates an ageing-resistant plate rubber support. Comprises a body consisting of a common plate type rubber support or a tetrafluoro sliding plate type rubber support; the elastic cladding of body side edge has width and body side edge adaptation and uses silicon rubber to make the guard ring of material. The utility model provides a current plate support technical problem such as ageing resistance is poor, it is good to have ageing resistance, advantages such as installation convenient to use.
Description
Technical Field
The utility model belongs to the rubber support especially indicates an ageing-resistant plate rubber support.
Background
In the 50 th century, rubber supports are used on bridges abroad, compared with metal supports, the rubber supports have the advantages of simple structure, easiness in processing and manufacturing, low manufacturing cost, small building height, convenience in installation, shock absorption, vibration isolation, large deformation and the like, and are widely applied to bridge engineering, China has developed tetrafluoro plate type rubber supports and basin type rubber supports at the end of the 70 th century since the plate type rubber supports were first used in the 60 th century in the last century, the plate type rubber supports almost become the only support type of small and medium-sized road bridges, rubber manufacturing materials of the plate type supports in the public road bridge plate type rubber supports (China's republic of China's traffic industry standard JT/T4-2004) have the following requirements that firstly, a normal temperature type rubber support is produced by adopting chloroprene rubber, a cold-resistant rubber support is produced by adopting natural rubber, secondly, a series of physical performance indexes including rubber hardness, tensile strength, breaking elongation, brittle temperature, ozone aging resistance, hot air aging resistance, the like are specified, and the rubber supports are not subjected to cracking or cracking, and the steel plates are subjected to the following three mechanical property specifications of rubber supports are specified, and the requirements are not subjected to cracking and the occurrence of rubber bonding, and the rubber support is not subjected to the following the specified by using a rubber bonding process of a rubber bonding process or steel plate, and the specification of a steel plate is specified by a.
The plate-type rubber support can cause diseases in practical use due to the following reasons: firstly, the design and the selection are unreasonable; secondly, the construction quality is poor; thirdly, the maintenance management is not good; fourthly, aging the rubber support; fifthly, the quality of the rubber support manufactured by part of production enterprises is poor. Due to the comprehensive action of load and environmental factors, the rubber composition and structure are changed, the aging and cracking phenomena occur, the original excellent performance is gradually lost, and even the use function is lost. To the extent that the applicant knows, for the above reasons, in application, the slab rubber mount will not show any damage within 5 years, some mounts will show outer bulging and cracking phenomena when used for 5-10 years, some slab rubber mounts will show crushing phenomena when used for 15 years, the crushing phenomena will increase for more than 20 years, the outer bulging and cracking phenomena will show, and it is necessary to replace the bridge slab rubber mount in time. Since rubber aging is an irreversible process, it is essentially a process of failure of the rubber mount. Research shows that the rubber support has high aging speed in the early stage of use, and the aging speed is reduced and tends to be stable along with the increase of time. In addition, the aging of rubber materials is related to the rubber species: the neoprene has good aging resistance and poor low temperature resistance; natural rubber has good low temperature resistance and poor aging resistance. With the progress of investigations on the degree of deterioration of rubber mount, the durability of rubber mount has been recognized. The aging of the rubber not only causes the reduction of mechanical performance indexes including the compression resistance, the shearing resistance and the like of the support and the reduction of the surface quality of the support, but also becomes one of main reasons influencing the service life of the plate type support, and the diseases of the support directly influence the operation safety of bridges and have attracted attention of management and maintenance departments. Therefore, the method for delaying the rubber aging of the support is an effective means for reducing the support diseases and prolonging the service life of the support and a main research direction of the technicians in the field.
According to the newly revised requirements of 'road and bridge plate type rubber supports' (JT/T4-2019), the service life of the plate type rubber support for the road and bridge is not less than 15 years, so that the aging resistance research of the plate type rubber support is urgent, and the plate type rubber support also becomes the practical requirements of bridge support production enterprises and bridge construction and management and maintenance units.
The applicant does not find patent literature reports relevant to the present application in domestic patent databases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ageing-resistant slab rubber support can effectively improve the ageing resistance ability of current slab rubber support, improves slab rubber support's life, and then effectively reduces the bridge maintenance cost, provides stable technical guarantee for bridge normal use.
The whole technical concept of the utility model is that:
the aging-resistant plate type rubber support comprises a body consisting of a common plate type rubber support or a tetrafluoro sliding plate type rubber support; the elastic cladding of body side edge have width and body side edge adaptation and use the guard ring of silicon rubber as the preparation material.
The applicant needs to state that:
in order to effectively avoid the contact between the external environment and the body, the width of the protection ring is matched with the side edge of the body, namely the width of the protection ring is not smaller than that of the side edge of the body. The silicone rubber product has the following characteristics: firstly, the elastic material is low temperature resistant and can normally work at the low temperature of minus 50 ℃ to minus 60 ℃; secondly, the silicon rubber has high temperature resistance, and can be used for a long time at the temperature of 250-300 ℃ without changing the properties; thirdly, the electric performance is excellent; fourthly, the material has excellent physical and mechanical properties including hardness, tensile strength, elongation and the like; fifthly, the weather resistance is good, the paint has excellent performances of resisting oxygen, ozone and ultraviolet radiation, and is not cracked after being used outdoors for a long time; sixthly, the silicon rubber has excellent physiological inertia, is inert to human beings, is odorless, tasteless and nontoxic, and has the characteristics of low surface activity, low temperature absorption and the like.
Because the silicon rubber goods have above-mentioned better performance, make the utility model discloses can effectively reduce the contact of external environment and body rubber under user state (be the upper and lower surface of support and roof beam body and pier contact, the support side exposes simultaneously), and then delay the ageing speed that causes the support because of the external environment influence.
The specific technical concept of the utility model is that:
the common plate type rubber support comprises a circular common plate type rubber support or a rectangular common plate type rubber support, and the PTFE slide plate type rubber support comprises a circular PTFE slide plate type rubber support or a rectangular PTFE slide plate type rubber support.
In order to facilitate the assembly of the guard ring and the support, the preferred technical scheme is that the guard ring adopts an integrally formed integral structure.
In order to facilitate the assembly of the protective ring and the support in use and facilitate the manufacture and transportation of the protective ring, the preferred technical scheme is that the protective ring is formed by a strip-shaped structure connected end to end, and the adjacent part of the protective ring is in bonding fit.
Furthermore, the guard ring is formed by adopting a sectional structure which is connected end to end in sequence, and the adjacent part of the guard ring is in bonding fit.
The applicant needs to say that the protection ring formed by the belt-shaped structure and the sectional structure can be independently manufactured and transported, the protection ring is independently installed after the support is assembled, the protection ring formed by the belt-shaped structure and the sectional structure can be formed by the existing extrusion forming, glue dripping process, solid hot press forming and liquid injection forming process, and the adhesive connection can adopt the adhesive connection modes including but not limited to instant quick-drying glue, RTV room temperature vulcanized silicone rubber adhesive, HTV high temperature vulcanized silicone rubber adhesive and the like, or the adhesive connection modes including magic tape and the like, so that the applicant does not need to describe any more herein because the applicant belongs to the prior art.
Because the silicon rubber has better elasticity, on the premise of effectively attaching the protective ring to the body and reducing the contact between the side edge of the body and the outside, the protective ring is prevented from being cracked or broken due to overstretching, and the preferable technical implementation means is that the perimeter of the protective ring 2 is D, the perimeter of the side edge of the body 1 is D, and D is more than or equal to 0.5D and less than or equal to D. The length of the protective ring is determined by combining the specific material, the use environment, the shape and the specification of the body and other factors of the silicon rubber, and the length is not described again by the applicant because the protective ring belongs to the prior art.
For verifying the utility model discloses use the anti-aging effect of back plate rubber support, the applicant has carried out following experiment:
performance of mono-and silicone rubber material
Secondly, present this body chloroprene rubber sizing material of plate rubber support and the utility model discloses an ageing-resistant plate rubber support silicon rubber sizing material ozone resistance performance contrast test
Thirdly, test sites: hebei Baoli engineering Equipment GmbH
Fourthly, testing time: 15/2/2019
Fifthly, participating personnel: wangshhui, Li jin hong, Sushiguo and Chenjian
Sixthly, detecting a product: taking 3 groups of parallel samples for testing the performance of the silicon rubber material; present this body of plate rubber support reaches with chloroprene rubber sizing material the utility model discloses an ageing-resistant plate rubber support also gets 3 groups of parallel samples respectively to go on with the ozone resistance performance contrast test of silicon rubber sizing material.
And (3) test results: the performance test of the silicon rubber material shows that the silicon rubber has extremely strong aging resistance and ozone resistance. The comparative experiment shows that when the test conditions are (100pphm, 20% elongation, 40 ℃ x 96h), the ozone aging resistance of the silicon rubber material for the aging-resistant plate-type rubber support is equivalent to that of the chloroprene rubber material for the existing plate-type rubber support; when the test conditions are (150pphm, 20% elongation, 40 ℃ x 96 h; 200pphm, 20% elongation, 40 ℃ x 96h), the utility model discloses an ozone aging resistance of chloroprene rubber sizing material for the anti-aging plate rubber support is compared and has been showing the improvement, explains in the anti-aging plate rubber support the utility model discloses a sizing material of gluing material wrapped up by the guard ring is superior to current plate rubber support's sizing material for the anti-aging plate rubber support.
The technical progress of the utility model lies in:
1. the utility model discloses to current slab rubber support's structural defect, combine the application environment of support, adopt width and body side edge adaptation and regard as the guard ring of preparation material with silicon rubber to protect the slab rubber support under the user state, greatly avoided the contact of user state undersetting and external environment, its ageing resistance is showing and is improving, through the applicant is experimental, the utility model discloses an ageing-resistant rubber support is showing and is improving with the ozone aging resistance of sizing material to current product, has prolonged the life of slab rubber support by a wide margin, has effectively ensured the operation safety of public road bridge roof beam, has greatly reduced public road bridge roof beam's management and maintenance cost.
2. The protective ring is adopted as a main technical solution for improving the aging resistance of the support, and different structures of the protective ring, such as integral forming, sectional forming or strip forming, are adopted, so that firstly, on the premise of not changing the structure of the existing plate type rubber support and less cost increase, the parts are convenient to manufacture and install, and standardized production is easy to realize; secondly, the device can be used according to actual requirements. Different modes are selected in a targeted manner to complete the production and installation of the guard ring.
3. The protective ring is adopted as the protection of the support, and the silicon rubber has good elasticity, physical and mechanical properties and aging resistance, so that firstly, the protective ring can be tightly attached to the body and correspondingly deformed along with the shape change of the body, a better coating effect is kept between the protective ring and the side edge of the body, and the contact between the outside and the surface of the support body is reduced; secondly, long-term use can effectively avoid the erosion of external environment to the support body, and then forms effective protection to the support body.
Drawings
Figure 1 adopts the appearance drawing of the utility model which takes a round common plate type rubber support as the body.
Fig. 2 is a view from a-a of fig. 1.
Fig. 3 is an outline view of the present invention using a rectangular tetrafluoro slide rubber support as a body.
Fig. 4 is a view from B-B of fig. 3.
The reference numbers in the drawings are as follows:
1. a body; 2. a guard ring.
Detailed Description
The present invention is further described with reference to the following examples, which should not be construed as limiting the scope of the present invention, but the scope of the present invention is defined by the following claims, and any equivalent technical means made according to the description should not be construed as departing from the scope of the present invention.
Example 1
The overall structure of the present embodiment is shown in fig. 1 and 2, and includes a body 1 composed of a circular common plate-type rubber support; the side edge of the body 1 is elastically coated with a protective ring 2 which has a width matched with that of the side edge of the body 1 and is made of silicon rubber.
The protective ring 2 is of an integrally formed integral structure or is formed by a strip-shaped structure connected end to end, and the adjacent part of the protective ring is in bonding fit; or the structure is formed by a sectional structure which is connected end to end in sequence, and the adjacent part is in bonding fit.
The circumference of the protective ring 2 is D, the circumference of the side edge of the body 1 is D, and D is more than or equal to 0.5D and less than or equal to D.
Example 2
The overall structure of the embodiment is shown in fig. 3 and 4, and comprises a body 1 consisting of rectangular tetrafluoro sliding plate type rubber supports; the side edge of the body 1 is elastically coated with a protective ring 2 which has a width matched with that of the side edge of the body 1 and is made of silicon rubber.
The protective ring 2 is of an integrally formed integral structure or is formed by a strip-shaped structure connected end to end, and the adjacent part of the protective ring is in bonding fit; or the structure is formed by a sectional structure which is connected end to end in sequence, and the adjacent part is in bonding fit.
The circumference of the protective ring 2 is D, the circumference of the side edge of the body 1 is D, and D is more than or equal to 0.5D and less than or equal to D.
Claims (6)
1. The aging-resistant plate type rubber support comprises a body (1) formed by a common plate type rubber support or a tetrafluoro sliding plate type rubber support; the novel protective ring is characterized in that the side edge of the body (1) is elastically coated with a protective ring (2) which has a width matched with that of the side edge of the body (1) and is made of silicon rubber.
2. The aging-resistant plate rubber bearing according to claim 1, wherein the common plate rubber bearing comprises a circular common plate rubber bearing or a rectangular common plate rubber bearing, and the tetrafluoro slide plate rubber bearing comprises a circular tetrafluoro slide plate rubber bearing or a rectangular tetrafluoro slide plate rubber bearing.
3. The aging-resistant plate type rubber support according to claim 1, wherein the guard ring (2) is of an integrally formed integral structure.
4. The aging-resistant plate rubber support according to claim 1, wherein the guard ring (2) is formed by a strip structure which is connected end to end, and the adjacent parts of the guard ring are in bonding fit.
5. The aging-resistant plate rubber support according to claim 1, wherein the guard ring (2) is formed by a segmented structure which is connected end to end, and the adjacent parts are in bonding fit.
6. The aging-resistant plate type rubber support according to any one of claims 1 and 3-5, characterized in that the circumference of the guard ring (2) is D, the circumference of the side edge of the body (1) is D, and 0.5D is less than or equal to D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437907.9U CN210621451U (en) | 2019-08-30 | 2019-08-30 | Aging-resistant plate type rubber support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437907.9U CN210621451U (en) | 2019-08-30 | 2019-08-30 | Aging-resistant plate type rubber support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210621451U true CN210621451U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921437907.9U Active CN210621451U (en) | 2019-08-30 | 2019-08-30 | Aging-resistant plate type rubber support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210621451U (en) |
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2019
- 2019-08-30 CN CN201921437907.9U patent/CN210621451U/en active Active
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