Flexible tensile shock insulation rubber support
Technical Field
The utility model relates to a flexible tensile shock insulation rubber support belongs to building shock insulation technical field.
Background
The rubber shock insulation technology is the most effective technical means for dealing with earthquake disasters. The earthquake action is reduced by prolonging the structural period and consuming earthquake energy, so that the life and property safety of human beings is protected, and huge economic loss and casualties are avoided.
The rubber shock insulation support has the characteristics of compression resistance and no tensile strength, the compression resistance bearing capacity of the rubber shock insulation support reaches more than 30 times of the tensile strength bearing capacity, and the tensile stress of the rubber shock insulation support is regulated by a specification to be not more than 1 MPa. In a shock insulation structure with a high-intensity area and a large height-width ratio, a tensile device is often added due to the fact that the tensile stress of a rubber support exceeds a standard limit value and the limit value of the application of a rubber shock insulation technology is limited. At present, tensile devices at home and abroad belong to rigid tensile devices, and the essence of the device is that an additional tensile device is connected in parallel with a rubber shock insulation support to share tensile force borne by the rubber shock insulation support, so that the rubber shock insulation support is prevented from being damaged by tension. Such tensile means have the following disadvantages:
1. large size and heavy weight. The device is arranged on a seismic isolation layer independently, and the section of the tensile device is generally large and heavy in order to obtain large tensile rigidity and tensile bearing capacity.
2. The horizontal rigidity and the compressive rigidity of the rubber shock insulation support are influenced, and the shock insulation effect is reduced. The device utilizes the steel strand wires or the springs to be compounded with the rubber shock insulation support into a whole, so that the horizontal rigidity of the support is enhanced while the tensile property of the rubber shock insulation support is enhanced, and the shock absorption effect is reduced.
3. The device mainly utilizes the guide rail or the bearing to be connected with the rubber support in parallel, and has the advantages of small tensile rigidity, precise manufacturing, low vertical tensile bearing capacity and high maintenance cost.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a flexible tensile shock insulation rubber support, which comprises a lower flange plate 1, a rubber buffer block 2, a limiting cylinder body 3, a limiting plate 4, a rubber support body 6 and an upper flange plate 7; the limiting cylinder body 3 is of a hollow structure, one end of the hollow structure is provided with an inward annular step, the side section of the limiting cylinder body 3 is in a shape like a Chinese character '7', one end, without the annular step, of the limiting cylinder body 3 is connected with the lower flange plate 1, a rubber buffer block 2, a limiting plate 4 and a rubber support body 6 are sequentially arranged in the limiting cylinder body 3 from one end of the lower flange plate 1, one end of the rubber support body (6) is located in the limiting cylinder body 3, and the other end of the rubber support body is connected with the upper flange plate 7;
the limiting plate 4 is fixedly connected with the rubber support body 6;
the inner diameter of the inward annular step of the limiting cylinder body 3 is smaller than the outer diameter of the limiting plate 4, and the outer diameter of the limiting plate 4 is smaller than the inner diameter of the limiting cylinder body 3 without the annular step part.
A friction ring 5 is arranged between the side surface of the limit plate 4 and the limit cylinder body 3; the limiting plate 4 and the friction ring 5 are bonded by an adhesive.
The limiting plate 4 and the rubber support body 6 are connected through bolts or bonded through adhesives.
The rubber support body 6 and the upper flange plate 7 are connected through bolts or bonded through adhesives.
And one end of the limiting cylinder body 3 without the annular step is connected with the lower flange plate 1 through a bolt.
The lower flange plate 1, the limiting cylinder 3, the limiting plate 4 and the upper flange plate 7 are made of steel.
Under the action of a horizontal earthquake, due to the horizontal limiting effect of the limiting cylinder body 3 and the small horizontal rigidity of the rubber support body 6, only the rubber support body 6 generates horizontal shearing deformation, so that the earthquake action is reduced by prolonging the structural period, and the safety of the structure is guaranteed; under the action of horizontal and vertical earthquakes, when the flexible tensile rubber support is pressed, the rubber buffer block 2 is restrained by the lower flange plate 1, the limiting cylinder body 3 and the limiting plate 4 together and can not be compressed and deformed, so that the vertical compression rigidity of the flexible tensile shock-insulation rubber support of the utility model tends to infinity, the vertical compression rigidity of the flexible tensile rubber support is the same as that of the rubber support body 6, and the flexible tensile rubber support has larger vertical bearing capacity and compression deformation resistance; when flexible rubber support is pulled, limiting plate 4 and 2 take place to separate of rubber buffer block, limiting plate 4 and 5 perpendicular upwards slides in spacing cylinder body 3 of friction ring, flexible tensile rubber support tensile rigidity reduces in the twinkling of an eye, therefore the pulling force that flexible tensile rubber support bore reduces in the twinkling of an eye, thereby in order to avoid the rubber support body to pull the destruction, when limiting plate 4 and 5 perpendicular upwards slides the displacement of friction ring are too big, limiting plate 4 will touch the inside annular step in top of spacing cylinder body 6, spacing cylinder body 6 has restricted shifting up of limiting plate 4, the support will stop to continue tensile deformation, thereby prevent the structure to topple the destruction.
The utility model discloses utilize rubber support body and spacing cylinder body series connection mechanism, both can satisfy the function of horizontal shock insulation, can improve rubber support's tensile ability again, but produce great vertical deformation through vertical spacing mechanism limit structure to the effective control structure topples, the utility model discloses simple structure, low cost, easy to overhaul the maintenance does not produce the influence, the installation of being convenient for to horizontal shock attenuation effect.
Drawings
FIG. 1 is a three-dimensional schematic view of the flexible tensile shock-insulation rubber support of the utility model;
FIG. 2 is a sectional view of the flexible tensile shock-insulation rubber support of the utility model;
in the figure: 1-lower flange plate, 2-rubber buffer block, 3-limiting cylinder body, 4-limiting plate, 5-friction ring, 6-rubber support body and 7-upper flange plate.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
A flexible tensile shock-insulation rubber support is shown in figures 1 and 2 and comprises a lower flange plate 1, a rubber buffer block 2, a limiting cylinder body 3, a limiting plate 4, a friction ring 5, a rubber support body 6 and an upper flange plate 7;
the limiting cylinder body 3 is of a hollow structure, one end of the hollow structure is provided with an inward annular step, the side section of the limiting cylinder body 3 is in a shape of '7', one end, without the annular step, of the limiting cylinder body 3 is connected with the lower flange plate 1 through a bolt, a rubber buffer block 2, a limiting plate 4 and a rubber support body 6 are sequentially arranged in the limiting cylinder body 3 from one end of the lower flange plate 1, one end of the rubber support body 6 is located in the limiting cylinder body 3, the other end of the rubber support body is connected with the upper flange plate 7, and the rubber support body 6 is connected with the upper flange plate 7 through an adhesive; the limiting plate 4 is fixedly connected with the rubber support body 6 by adopting an adhesive; the inner diameter of the inward annular step of the limiting cylinder body 3 is smaller than the outer diameter of the limiting plate 4, and the outer diameter of the limiting plate 4 is smaller than the inner diameter of the limiting cylinder body 3 without the annular step part; the friction ring 5 is arranged between the side surface of the limit plate 4 and the inner wall of the limit cylinder 3; the side surface of the limiting plate 4 is bonded with the friction ring 5 by an adhesive; the lower flange plate 1, the limiting cylinder 3, the limiting plate 4 and the upper flange plate 7 are made of steel; rubber support body 6 is the integrative vulcanization of multilayer steel sheet multilayer rubber one-time overlap and forms, has certain horizontal equivalent rigidity and vertical compression rigidity, can play the shock insulation effect, and the internal diameter of 3 inside annular steps of spacing cylinder body and the distance between rubber support body 6 equal rubber support body 6 lie in the quadruple of 3 internal parts's of spacing cylinder body rubber layer total height to satisfy the requirement to the four times horizontal deflection of rubber thickness in the current shock insulation support national standard.
In the preparation method of the flexible tensile shock-insulation rubber support of the embodiment, two ends of a rubber support body 6 are respectively provided with a rubber layer, the rubber support body 6 and a limiting plate 4 are bonded into a whole by adopting a bonding agent, the side surface of the limiting plate 4 is bonded with a friction ring 5 by adopting the bonding agent, an upper flange plate 7 is placed on the ground, a limiting cylinder body 3 is placed on the upper flange plate 7, one end of the limiting cylinder body 3 with an inward annular step is contacted with the upper flange plate 7, the rubber support body 6 bonded with the limiting plate 4 and the friction ring 5 is placed in a limiting cylinder body 3, one end of the rubber support body 6 without the limiting plate 4 is contacted with the upper flange plate 7, a rubber buffer block 2 is placed on the limiting plate 4, a lower flange plate 1 is placed on the rubber buffer block 2, the limiting cylinder body 3 is moved upwards to be contacted with the lower flange plate 1, the limiting cylinder body 3 is fixed, and then the whole body is turned over (rotated upwards by 180 degrees), so that the lower flange plate 1 is arranged at the bottommost surface, the upper flange plate 7 is arranged at the topmost surface, and the upper flange plate 7 and the rubber support body 6 are bonded together by using an adhesive, thereby completing the preparation of the flexible tensile rubber support.
In the using process of the flexible tensile shock insulation rubber support, the lower flange plate 1 of the flexible tensile rubber support is installed on the lower buttress, the upper flange plate 7 continues to pour the buttress, and under the action of a horizontal earthquake, due to the horizontal limiting effect of the limiting cylinder body 3, the horizontal rigidity of the rubber support body 6 is small, only the rubber support body 6 generates horizontal shearing deformation at the moment, so that the earthquake effect is reduced by prolonging the structural period, and the safety of the structure is guaranteed; under the action of horizontal and vertical earthquakes, when the flexible tensile rubber support is pressed, the rubber buffer block 2 is restrained by the lower flange plate 1, the limiting cylinder body 3 and the limiting plate 4 together and cannot be compressed and deformed, so that the vertical compression stiffness of the flexible tensile shock-insulation rubber support tends to infinity, the vertical compression stiffness of the flexible tensile rubber support is the same as that of the rubber support body 6, and the flexible tensile rubber support has higher vertical bearing capacity and compression deformation resistance; when flexible rubber support is pulled, limiting plate 4 and 2 take place to separate of rubber buffer block, limiting plate 4 and 5 perpendicular upwards slides in spacing cylinder body 3 of friction ring, flexible tensile rubber support tensile rigidity reduces in the twinkling of an eye, therefore the pulling force that flexible tensile rubber support bore reduces in the twinkling of an eye, thereby in order to avoid the rubber support body to pull the destruction, when limiting plate 4 and 5 perpendicular upwards slides the displacement of friction ring are too big, limiting plate 4 will touch the inside annular step in top of spacing cylinder body 6, spacing cylinder body 6 has restricted shifting up of limiting plate 4, the support will stop to continue tensile deformation, thereby prevent the structure to topple the destruction.
The utility model discloses also can adopt bolted connection between rubber support body 6 and the upper flange board 7, if adopt bolted connection, the one end uppermost layer of rubber support body 6 and the contact of upper flange board 7 sets up to the thick steel plate.
The utility model discloses also can adopt bolted connection between rubber support body 6 and the limiting plate 4, if adopt bolted connection, the one end uppermost layer of rubber support body 6 and the contact of last flange board 7 sets up to the thick steel plate.