CN107386456B - Series type fireproof protection device for shearing type rubber vibration isolation support - Google Patents
Series type fireproof protection device for shearing type rubber vibration isolation support Download PDFInfo
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- CN107386456B CN107386456B CN201710860561.2A CN201710860561A CN107386456B CN 107386456 B CN107386456 B CN 107386456B CN 201710860561 A CN201710860561 A CN 201710860561A CN 107386456 B CN107386456 B CN 107386456B
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- bottom plate
- isolation support
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- 238000002955 isolation Methods 0.000 title claims abstract description 82
- 229920001971 elastomer Polymers 0.000 title claims abstract description 64
- 238000010008 shearing Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 38
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003063 flame retardant Substances 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 11
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
A shearing type rubber vibration isolation support series connection type fireproof protection device comprises an upper buttress, a lower buttress, a rubber vibration isolation support, a fireproof top plate, a fireproof bottom plate and a vertical cylinder, wherein the buttresses, the fireproof plate and the fireproof plate are connected with the vertical cylinder in a sliding type separation mode through caulking joints of guide rods, sliding grooves and expansion flame retardant materials, and a series connection type fireproof protection cover with enclosed sealing is formed; the lower buttress is provided with a weak shear key to limit horizontal displacement of the fireproof bottom plate and the vertical cylinder during low-amplitude vibration; and the periphery of the rubber vibration isolation support is coated with heat-insulating flame-retardant protective glue. The invention solves the problem of fireproof protection of the rubber vibration isolation support, does not influence the low-amplitude vibration deformation requirement of the support during normal operation, and when high-amplitude vibration such as strong shock or synchronous occurrence of strong wind and fire disaster is encountered, the flame retardant material is heated and instantaneously expands, the serial protection cover can follow the shearing deformation of the support without influencing the vibration isolation effect, and meanwhile, the invention also has the effects of energy dissipation, vibration reduction and vibration suppression.
Description
Technical Field
The invention relates to a fireproof protection device, in particular to a series connection type fireproof protection device for a shearing type rubber vibration isolation support.
Background
At present, the shock insulation (vibration) support is widely applied to shock insulation (vibration) engineering of buildings, bridges, equipment and the like, especially after the reconstruction after a Wenchuan earthquake disaster, the building adopting the shock insulation support can obviously lighten the damage effect of the earthquake to the structure, ensure the safety of the structure, people and property, and has been well inspected in a plurality of actual earthquakes. The typical building is a comprehensive building of the urban hospitals in the county of reed mountain, 83 rubber shock insulation supports with diameters of 500mm and 600mm are adopted, analysis and design of the shock insulation structure are completed by the professor Zhou Yun of Guangzhou university and Wu Congxiao doctor, and the building is intact after encountering a strong shock of grade 7.0 in Yaan M in 2013 and exerts excellent earthquake relief function for the first time.
The building vibration isolation technology is that a vibration isolation layer consisting of a vibration isolation support is arranged between an upper structure and a foundation (or a lower structure) of a building at a certain part of the building, so that the upper structure of the building is separated from a foundation to change the vibration characteristic of a structural system, prolong the structural period or increase the structural damping at the same time, consume most of the earthquake energy through the horizontal large deformation movement of the vibration isolation layer, reduce the input of the earthquake energy to the upper structure, effectively reduce the acceleration reaction of the upper structure caused by the earthquake, reduce the interlayer shearing force and the corresponding shearing deformation, and meet the expected vibration-proof requirement.
If the structure is in fire, the vibration isolation device is directly exposed to big fire, although the vibration isolation rubber support has certain fire resistance, the thermal stability of the rubber material is poor, and in the real fire and fire resistance test, the air temperature can reach more than 1000 ℃, which is far beyond the thermal stability of the rubber material, so that the fire safety of the rubber support is greatly unknown. Therefore, the shock-insulating rubber support needs to be fireproof and protected. However, the fire protection engineering of the shock insulation layer is different from the fire protection of a general building, because the structural requirement of the shock insulation building is that building components related to shock insulation need to move freely in the earthquake, the shear deformation capacity of the shock insulation support is generally 300mm-800mm, the fire protection structure of the shock insulation support inevitably loses integrity, and special fire protection nodes need to be designed to meet various requirements of fire protection.
The Chinese patent publication No. CN 10542160A discloses a shock insulation fireproof structure and a construction method thereof, wherein the shock insulation fireproof structure comprises a shock insulation layer upper plate, a shock insulation layer lower plate, a vertical fireproof plate and a fireproof plate plugging device, wherein the vertical fireproof plate and the fireproof plate plugging device are arranged between the shock insulation layer upper plate and the shock insulation layer lower plate and are enclosed around the shock insulation layer space, the middle part of the fireproof plate is broken to form a horizontal earthquake dislocation seam which surrounds the shock insulation layer space for one circle, the fireproof plate plugging device is fixed in the earthquake dislocation seam, and the fireproof plate plugging device is adaptive to the size of the earthquake dislocation seam. The fireproof structure can improve the fireproof capacity of the vibration isolation layer and the vibration isolation support under the normal working state and the low-amplitude vibration state, but when a fire disaster occurs during strong vibration, horizontal gaps are formed between the upper fireproof plate and the lower fireproof plate due to larger dislocation, and the phenomenon of excessive fire is easy to occur, so that the vibration isolation layer and the vibration isolation support fail due to insufficient fire resistance.
In view of this, the present inventors have conducted intensive studies on a fireproof structure of a vibration isolation mount, and have produced the present invention.
Disclosure of Invention
The invention aims to provide a series connection type fireproof protection device for a shearing type rubber vibration isolation support, which has the functions of wind resistance, fire resistance, small vibration resistance and the like in a normal working state, and can shear a weak shear key by utilizing shearing force when in high-amplitude vibration such as strong vibration or strong wind, but the fire resistance device forms a series connection type protection cover in sliding connection to continuously work normally, and does not prevent the rubber vibration isolation support from freely deforming horizontally. If a fire disaster occurs during strong earthquake, the flame-retardant caulking material can expand instantaneously and seal the seam gap, and the contact surface of each connector shows certain energy consumption capacity due to the increase of friction resistance while the serial protection cover follows the motion of the vibration isolation main body, so that the purposes of shock absorption and fireproof protection of the upper structure are achieved. After high-amplitude vibration is finished, the combined type vertical barrel is disassembled, the assembly units are disassembled, other heat-insulating fireproof assemblies are disassembled, the vibration isolation supports are processed, the newly processed fireproof plate is connected to the corresponding buttress, the weak shear key is reset on the lower buttress, and then the vertical barrel is installed, so that the functions of fire resistance and vibration isolation can be played again.
The invention realizes the aim through the following technical scheme:
the series-connection type fireproof protection device for the shearing type rubber vibration isolation support comprises an upper buttress, a lower buttress, the rubber vibration isolation support, protective rubber thereof and a heat insulation fireproof assembly, wherein the heat insulation fireproof assembly comprises a top plate, a bottom plate and a vertical cylinder which are made of fireproof protective materials; the upper buttress is connected with the top plate, the top plate and the vertical cylinder, the vertical cylinder is connected with the bottom plate, and the bottom plate is connected with the lower buttress in a sliding type separation manner, and a serial fireproof protection cover enclosing the rubber vibration isolation support is formed; and a weak shear key is arranged between the lower buttress and the bottom plate.
Preferably, the cross sections of the top plate and the bottom plate are annular, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support, the outer peripheral dimension is reduced by 10-50mm compared with the corresponding buttress dimension, the inner peripheral dimension is larger than the diameter of the rubber vibration isolation support, the specific numerical value is determined according to the limit deformation calculation of the vibration isolation support, and the thickness is 20-80mm; the vertical cylinder can be formed by splicing integral cylinder bodies and half cylinder pairs or formed by stacking cylinder sections, the thickness of the cylinder wall is 30-120mm, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support, the middle peripheral line on the cross section of the cylinder wall coincides with the middle peripheral line of the top plate and the bottom plate, namely the widths of the inner flange and the outer flange, which are picked up by the top plate and the bottom plate relative to the vertical cylinder, are the same, and the middle peripheral line is the average value of the inner peripheral line and the outer peripheral line on the cross section.
Preferably, the sliding type separation connection comprises a guide rod, a chute and an expanded flame-retardant material caulking joint, wherein the guide rod and the chute form a connection pair and are arranged in pairs, a central connecting line passes through the geometric center of the cross section of the connector, one end of the guide rod is fixed in the connector, and the other end of the guide rod translates along the chute arranged in the connected body; the sliding groove can be in a straight shape, an oval shape or a round shape according to a unidirectional or bidirectional shearing deformation mode of the vibration isolation main body, the size of the sliding groove is determined according to limit deformation calculation of the vibration isolation support, and when the sliding groove is in the straight shape or the oval shape, the long side is perpendicular to a connecting line between the center of the sliding groove and the geometric center of the cross section; the high-expansion flame-retardant material is arranged between the upper buttress and the top plate and between the bottom plate and the lower buttress, the thickness of the high-expansion flame-retardant material is increased to 5-15 times when the high-expansion flame-retardant material is expanded, and the thickness of the low-expansion flame-retardant material is increased to 1.2-1.8 times when the high-expansion flame-retardant material is expanded.
Preferably, the weak shear key is fixed on the lower buttress, passes through the bottom plate and clings to the inner wall of the vertical cylinder, is arranged in pairs, and the central connecting line passes through the geometric center of the cross section of the lower buttress and is perpendicular to the central connecting line of the connecting pair between the lower buttress and the bottom plate, and the shear strength of the weak shear key is calculated and determined according to the normal working limit state of the rubber vibration isolation support, namely, the weak shear key is damaged and fails when the shear deformation of the rubber vibration isolation support exceeds the normal working state.
Preferably, the top outer edge of the top plate and the bottom outer edge of the bottom plate are fixedly provided with washers, the thickness of each washer is larger than that of the rubber vibration isolation support connecting flange, and the washers are made of flexible fireproof protection materials.
Preferably, the rubber vibration isolation support is a natural rubber vibration isolation support, a high-damping rubber vibration isolation support, a lead-rubber vibration isolation support or a rubber skateboard vibration isolation support.
Compared with the prior art, the invention has the beneficial effects that: (1) The weak shear key in the novel fireproof protection device of the rubber vibration isolation support can play a good role in resisting low-amplitude vibration excitation such as small vibration, constant wind and the like, and the serial fireproof protection cover and the protection rubber can play a good role in multistage fireproof protection stably in a fire disaster; (2) When high-amplitude vibration such as strong vibration or strong wind occurs, the shearing force shears the weak shear key shear, and the serial fireproof protection cover enters a state of following the motion of the vibration isolation support, so that the support can freely and fully shear deformation in the horizontal direction, and the upper main body structure is protected; (3) The sliding surfaces of all components of the protective cover are always in a continuous contact state in the high-amplitude vibration process by reasonably designing the size of the sliding groove in the serial fireproof protective cover, and when the high-amplitude vibration and the fire disaster occur simultaneously, the flame-retardant caulking material is heated and instantaneously expands, so that the fireproof protective cover can effectively prevent fire, and the following motion of the serial fireproof protective cover can also show good vibration reduction and vibration inhibition effects, so that the reliability of a main body can be further improved; (4) According to the invention, after high-amplitude vibration, the fireproof assembly in the high-amplitude vibration damper can be conveniently replaced, so that the fireproof and vibration isolation functions are played again; (5) The invention is a sport protection mechanism, has simple structure, clear mechanism, convenient construction and installation, easy replacement and strong practicability.
Drawings
Fig. 1 is a schematic structural view of the shear type rubber vibration isolation support fireproof protection device.
Fig. 2 is a schematic cross-sectional view of fig. 1 along line A-A.
Fig. 3 is a schematic cross-sectional view of fig. 1 along line B-B.
Fig. 4 is a schematic structural view of the base plate of the present invention.
Fig. 5 is a schematic view of the structure of the top plate of the present invention.
Fig. 6 is a schematic structural view of the inventive cartridge.
Fig. 7 is a partial enlarged view of fig. 2 at C.
Fig. 8 is a partial enlarged view of fig. 3 at D.
Fig. 9 is a schematic view of the protection state when the rubber vibration isolation mount is brought into the limit deformation.
In the figure: 1-upper buttress, 1.1-first guide rod, 2-lower buttress, 2.1-second guide rod, 2.2-weak shear key, 3-rubber vibration isolation support, 3.1-flange, 4-protection glue, 5-top plate, 5.1-third guide rod, 5.2-first chute, 5.3-first high expansion type flame-retardant material, 5.4-first gasket, 5.5-first self-tapping screw, 6-bottom plate, 6.1-fourth guide rod, 6.2-second chute, 6.3-second high expansion type flame-retardant material, 6.4-second gasket, 6.5-second self-tapping screw, 6.6-preformed hole, 7-vertical barrel, 7.1-third chute, 7.2-low expansion type flame-retardant material
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 8, the series fireproof protection device for the shearing type rubber vibration isolation support comprises an upper support pier 1, a lower support pier 2, a rubber vibration isolation support saddle 3, a protection rubber 4 and a heat insulation fireproof assembly, wherein the heat insulation fireproof assembly comprises a top plate 5, a bottom plate 6 and a vertical cylinder 7 which are made of fireproof protection materials; the upper buttress 1 is in sliding separation connection with the top plate 5, the top plate 5 is in sliding separation connection with the vertical cylinder 7, the vertical cylinder 7 is in sliding separation connection with the bottom plate 6, and the bottom plate 6 is in sliding connection with the lower buttress 2, so that a serial fireproof protection cover enclosing the rubber vibration isolation support is formed; a weak shear key 2.2 is arranged between the lower buttress 2 and the bottom plate 6.
Preferably, the cross sections of the top plate 5 and the bottom plate 6 are annular, in this embodiment, the circular ring is taken, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support 3, the outer circumference diameter is reduced by 30mm compared with the side length of the corresponding buttress, the inner circumference diameter is greater than the diameter of the rubber vibration isolation support 3, the specific numerical value needs to be determined according to the limit deformation calculation of the vibration isolation support 3, and the thicknesses of the top plate 5 and the bottom plate 6 are 30mm; the vertical cylinder 7 can be formed by splicing an integral cylinder body and a half cylinder or stacking cylinder sections, the thickness of the cylinder wall is 60mm, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support 3, the middle peripheral line on the cross section of the cylinder wall coincides with the middle peripheral lines of the top plate 5 and the bottom plate 6, namely the widths of the inner flange and the outer flange, which are picked up by the top plate 5 and the bottom plate 6 relative to the vertical cylinder 7, are the same, and the middle peripheral line is the average value of the inner peripheral line and the outer peripheral line on the cross section.
Preferably, the sliding type separation connection comprises a guide rod, a chute and an expanded flame-retardant material caulking joint, wherein the guide rod and the chute form a connection pair and are arranged in pairs, a central connecting line passes through the geometric center of the cross section of the connector, one end of the guide rod is fixed in the connector, and the other end of the guide rod translates along the chute arranged in the connected body; the sliding groove can be in a straight shape, an elliptic shape or a circular shape according to the unidirectional or bidirectional shearing deformation mode of the vibration isolation main body, the embodiment takes the straight shape, the length of the sliding groove is determined according to the limit deformation calculation of the vibration isolation support, and the long side is perpendicular to the connecting line of the center of the sliding groove and the geometric center of the cross section. The first guide rod 1.1 is a long screw rod fixed on the bottom surface of the upper buttress 1, the first chute 5.2 is an open slot hole arranged on the top plate 5, and a nut is screwed on the long screw rod after passing through the slot hole so as to position the top plate 5; between the top plate 5 and the vertical cylinder 7, the third guide rod 5.1 is a long screw rod fixed on the bottom surface of the top plate 5, and the third chute 7.1 is a closed chute arranged on the upper section of the vertical cylinder 7; between the vertical tube 7 and the bottom plate 6, the fourth guide rod 6.1 is a long screw rod fixed on the top surface of the bottom plate 6, and the third chute 7.1 is a closed chute arranged at the lower section of the vertical tube 7; between the bottom plate 6 and the lower buttress 2, the second guide rod 2.1 is a long screw rod fixed on the top surface of the lower buttress 2, the second chute 6.2 is an open slot hole arranged on the bottom plate 6, and the long screw rod passes through the slot hole and then is screwed with a nut to position the bottom plate 6. The expansion flame-retardant material is respectively a first high expansion flame-retardant material 5.3 and a second high expansion flame-retardant material 6.3 between the upper buttress 1 and the top plate 5 and between the bottom plate 6 and the lower buttress 2, the thickness of the expansion flame-retardant material is increased to 5-15 times when the expansion flame-retardant material is expanded, the thickness of the expansion flame-retardant material is increased to 1.2-1.8 times when the expansion flame-retardant material is expanded, and the thickness of the expansion flame-retardant material is increased to 7.2 between the top plate 5 and the vertical cylinder 7 and between the vertical cylinder 7 and the bottom plate 6.
Preferably, the weak shear key 2.2 is fixed on the lower buttress 2, passes through the bottom plate 6 and is tightly attached to the inner wall of the vertical barrel 7, and is arranged in pairs, wherein the central connecting line passes through the geometric center of the cross section of the lower buttress 2 and is perpendicular to the central connecting line of the connecting pair between the lower buttress 2 and the bottom plate 6, and the shear strength of the weak shear key 2.2 is calculated and determined according to the normal working limit state of the rubber vibration isolation support 3, namely, the weak shear key 2.2 is damaged and fails when the shear deformation of the rubber vibration isolation support 3 exceeds the normal working state.
Preferably, the top outer edge of the top plate 5 and the bottom outer edge of the bottom plate 6 are respectively and fixedly provided with a first gasket 5.4 and a second gasket 6.4 by self-tapping screws 5.5, the thickness of the gaskets is larger than that of the connecting flange plate 3.1 of the rubber vibration isolation support 3, and the gaskets are made of flexible fireproof protective materials.
Preferably, the rubber vibration isolation mount 3 is a natural rubber vibration isolation mount, a high damping rubber vibration isolation mount, a lead-rubber vibration isolation mount or a rubber skateboard vibration isolation mount.
Referring to fig. 9, when the rubber vibration isolation mount 3 is in a limit deformation state of high-amplitude vibration, the fire-proof assembly of the present invention can form effective protection to the mount through sliding type separation connection, the weak shear key is sheared, the fire-proof assembly can slide relatively freely, and since the length of the chute is determined according to the deformation calculation of the mount, no completely staggered gap appears inside the fire-proof assembly, the gasket can support the top plate 5 and the bottom plate 6, and a certain range of gaps can be formed between the gasket and the support pier in the reciprocating shearing deformation process, for example, high-amplitude vibration and fire disaster occur simultaneously, and the first high-expansion type flame-retardant material 5.3 and the second high-expansion type flame-retardant material 6.3 can be instantaneously expanded to fill the gaps so as to isolate heat from entering the protective cover.
The above examples merely represent embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention, and all other examples obtained by persons skilled in the art without making creative efforts are within the scope of protection of the present invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (4)
1. The series-connection type fireproof protection device for the shearing type rubber vibration isolation support comprises an upper buttress, a lower buttress, the rubber vibration isolation support, protective rubber thereof and a heat insulation fireproof assembly, and is characterized in that the heat insulation fireproof assembly comprises a top plate, a bottom plate and a vertical cylinder which are made of fireproof protective materials; the upper buttress and the top plate, the top plate and the vertical cylinder, the vertical cylinder and the bottom plate, and the bottom plate and the lower buttress are connected in a sliding type separation manner, and a serial fireproof protection cover enclosing the rubber vibration isolation support is formed; a weak shear key is arranged between the lower buttress and the bottom plate;
the cross sections of the top plate and the bottom plate are annular, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support, the outer peripheral dimension is reduced by 10-50mm compared with the corresponding buttress, the inner peripheral dimension is larger than the diameter of the rubber vibration isolation support, and the thickness is 20-80mm; the thickness of the wall of the vertical cylinder is 30-120mm, the vertical axis of the initial position coincides with the vertical axis of the rubber vibration isolation support, the middle peripheral line on the cross section of the wall coincides with the middle peripheral lines of the top plate and the bottom plate, namely the widths of the inner flange and the outer flange which are picked up by the top plate and the bottom plate relative to the vertical cylinder are the same, and the middle peripheral line is the average value of the inner flange and the outer flange on the cross section;
the sliding type separation connection mode comprises a guide rod, a chute and an expansion flame-retardant material caulking joint, wherein the guide rod and the chute form a connection pair and are arranged in pairs, the central connecting line passes through the geometric center of the cross section of the connecting body, one end of the guide rod is fixed in the connecting body, and the other end of the guide rod translates along a sliding groove arranged in the connected body; the sliding chute adopts a straight shape, an oval shape or a round shape according to a unidirectional or bidirectional shearing deformation mode of the vibration isolation main body, the size of the sliding chute is determined according to the limit deformation calculation of the vibration isolation support, and when the sliding chute is of the straight shape or the oval shape, the long side is perpendicular to the connecting line between the center of the sliding chute and the geometric center of the cross section; the high-expansion flame-retardant material is arranged between the upper buttress and the top plate and between the bottom plate and the lower buttress, the thickness of the high-expansion flame-retardant material is increased to 5-15 times when the high-expansion flame-retardant material is expanded, and the thickness of the low-expansion flame-retardant material is increased to 1.2-1.8 times when the high-expansion flame-retardant material is expanded.
2. The series fireproof protection device for the shearing type rubber vibration isolation support according to claim 1, wherein the weak shear key is fixed on the lower support pier, passes through the bottom plate, is tightly attached to the inner wall of the vertical cylinder, is arranged in pairs, and is perpendicular to the central connecting line of the connecting pair between the lower support pier and the bottom plate, wherein the central connecting line passes through the geometric center of the cross section of the lower support pier.
3. The series fireproof protection device for the shearing type rubber vibration isolation support according to claim 1, wherein gaskets are fixedly arranged on the top outer edge of the top plate and the bottom outer edge of the bottom plate, the thickness of each gasket is larger than that of the connecting flange plate of the rubber vibration isolation support, and the gasket is made of flexible fireproof protection materials.
4. The series fireproof protection device for shearing type rubber vibration isolation supports according to claim 1, wherein the rubber vibration isolation supports are natural rubber vibration isolation supports, high damping rubber vibration isolation supports, lead-rubber vibration isolation supports or rubber skateboard vibration isolation supports.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710860561.2A CN107386456B (en) | 2017-09-21 | 2017-09-21 | Series type fireproof protection device for shearing type rubber vibration isolation support |
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| CN201710860561.2A CN107386456B (en) | 2017-09-21 | 2017-09-21 | Series type fireproof protection device for shearing type rubber vibration isolation support |
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| CN107386456A CN107386456A (en) | 2017-11-24 |
| CN107386456B true CN107386456B (en) | 2024-02-02 |
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| CN112854861B (en) * | 2021-01-07 | 2022-08-30 | 万力轮胎股份有限公司 | Three-dimensional shock insulation support |
| CN114182626A (en) * | 2021-11-23 | 2022-03-15 | 上海市政工程设计研究总院（集团）有限公司 | Support safety cover |
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