A limited sliding isolation device and its use method

Abstract

The present invention discloses a limited sliding seismic isolation device, comprising a lower pier and an upper pillar, wherein a seismic isolation bearing is arranged between the lower pier and the upper pillar, the seismic isolation bearing comprises a seismic isolation body, and an upper mounting plate and a lower mounting plate are respectively arranged on the upper and lower sides of the seismic isolation body, the lower mounting plate and the upper mounting plate are respectively fixedly connected to the lower pier and the upper pillar by a plurality of mounting bolts, and is characterized in that: a support frame structure is arranged on the outer side of the lower pier, and a limit pushing assembly for limiting the displacement of the upper pillar and resetting the upper pillar after vibration is arranged on the support frame structure; when the seismic isolation bearing is in a small earthquake such as vibration below magnitude 4, the shock absorbing rod body assembly can play a shock absorbing role to prevent the displacement of the upper pillar and the upper floor under light and small vibration; and in the case of a large earthquake, the shock absorbing rod of the shock absorbing rod body assembly breaks at the cutting groove, which does not affect the seismic isolation effect of the seismic isolation bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation, and in particular to a limited sliding seismic isolation device and a use method thereof. Background Art

[0002] Earthquake disasters mainly come from forced vibrations of structures caused by ground movement. The basic principle of seismic isolation is to reduce the horizontal stiffness of the structure, extend the natural vibration period of the structure, and increase the structural damping by installing seismic isolation devices, thereby effectively reducing the seismic response of the structure. Seismic isolation is an earlier developed passive control measure. The principle of seismic isolation technology is to install seismic isolation bearings between the structure itself and the ground or the lower supporting structure, thereby reducing the dynamic amplification effect of the structural earthquake. The seismic isolation system of engineering structures should have the following characteristics: load-bearing characteristics, seismic isolation characteristics, energy consumption characteristics, as well as stability and durability.

[0003] A limitable sliding isolation device with application number CN201120568468.2 comprises a lower friction sliding plate with a concave longitudinal section, an intermediate sliding block placed in a groove of the lower friction sliding plate, and an upper friction sliding plate with a concave longitudinal section located on the upper part of the intermediate sliding block, wherein the concave surface of the upper friction sliding plate is opposite to the concave surface of the lower friction sliding plate, and the intermediate sliding block is located in the groove of the upper friction sliding plate, wherein a first coating is applied between the upper friction sliding plate and the intermediate sliding block, and a second coating is applied between the lower friction sliding plate and the intermediate sliding block;

[0004] A tensile limit isolation bearing with application number CN201810102746.1 includes a bearing body, an upper connecting plate, a lower connecting plate and a tensile limit device; the upper connecting plate and the lower connecting plate are fixed to the upper and lower ends of the bearing body, and tensile limit devices are respectively arranged around the bearing body; the tensile limit device includes two mutually orthogonal sliding limit mechanisms, and the two sliding limit mechanisms are connected by a flexible material. The tensile limit device is arranged around the bearing body and can slide freely along the X and Y axes without affecting the horizontal seismic isolation performance of the bearing body, and limits the maximum deformation of the bearing body in the X and Y axis directions. The flexible material bears the tensile force of the bearing body in the Z axis direction, which effectively enhances the tensile stiffness of the bearing in the Z direction;

[0005] In the above-mentioned prior art, when a small earthquake such as a vibration below magnitude 4 occurs, the seismic isolation bearing will also cause vibration displacement above the floor and slip deformation of the seismic isolation bearing. However, in the event of a large earthquake, the position of the upper support cannot be limited, and after the vibration, it is not convenient to reset the position of the seismic isolation bearing after sliding. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] The purpose of the present invention is to provide a limited sliding isolation device and a method of using the same in order to solve the above problems.

[0008] (II) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] The present invention provides a limited sliding seismic isolation device, comprising a lower pier and an upper pillar, a seismic isolation support is arranged between the lower pier and the upper pillar, the seismic isolation support comprises a seismic isolation body, an upper mounting plate and a lower mounting plate are respectively arranged on the upper and lower sides of the seismic isolation body, the lower mounting plate and the upper mounting plate are respectively fixedly connected to the lower pier and the upper pillar by a plurality of mounting bolts, and is characterized in that: a support frame structure is arranged on the outer side of the lower pier, a limit pushing assembly is arranged on the support frame structure for limiting the displacement of the upper pillar and resetting the upper pillar after vibration, a damping buffer structure is also arranged on the support frame structure for buffering and absorbing shock of the vibration displacement of the upper pillar, and a shock absorbing rod body assembly is arranged between the lower pier and the upper pillar.

[0011] Furthermore, the support frame structure includes a plurality of outer rings evenly distributed in the up-down direction, the outer rings are fixedly sleeved on the outer side of the lower pier, the outer side of the lower pier is provided with four or more vertical poles evenly distributed at equal angles with the pier as the center, each vertical pole is fixedly connected to the outer ring through a plurality of connecting rods, wherein the number and position of the outer rings and the connecting rods correspond one to one, the bottom end of each vertical pole is fixedly connected to a bottom rod, and an oblique support rod is fixedly connected to the bottom rod and the vertical pole.

[0012] Furthermore, the limit push assembly is provided with a plurality of groups which are evenly distributed at equal angles with the upper pillar as the center and correspond one to one with the vertical poles, each group includes a plurality of groups which are distributed in the up-down direction and fixed on the vertical poles, the limit push assembly includes two hydraulic cylinders which are symmetrically distributed with the vertical poles as the center, a support plate for supporting and fixing the upper and lower sides of the hydraulic cylinders is fixedly provided on the vertical poles, a T-shaped support rod for limiting support of the tail end of the hydraulic cylinder is also fixedly provided on the vertical poles, the push rod head end of the hydraulic cylinder faces the upper pillar and is fixedly connected to the limit push plate, and a stop rod is fixedly connected to the T-shaped support rod and the bottom rod.

[0013] Furthermore, the shock-absorbing rod body assembly is provided with a number of evenly distributed ones with the shock-absorbing bearing as the center, the shock-absorbing bearing includes two supporting sleeves distributed up and down, a shock-absorbing rod is slidably connected between the two supporting sleeves, and corresponding limiting sleeves are provided on the sides of the two supporting sleeves close to each other, the limiting sleeves are sleeved on the outside of the shock-absorbing rod, and the corresponding limiting sleeves and supporting sleeves are fixedly connected to each other with springs, and the side walls of the limiting sleeves are provided with fixing bolts for tightening connection with the shock-absorbing rod, and a circular cutting groove is opened on the outer side wall of the shock-absorbing rod between the two limiting sleeves, and the cross-sectional shape of the cutting groove is V-shaped.

[0014] Furthermore, an inner sleeve is sleeved inside the supporting sleeve, and shock-absorbing pads are arranged between the outer wall of the inner sleeve and the inner wall of the supporting sleeve. Limiting shoulder plates are fixedly arranged on the outer walls of the upper and lower ends of the inner sleeve, and the outer diameter of the limiting shoulder plates is larger than the inner diameter of the supporting sleeve.

[0015] Furthermore, the damping and buffering structure is provided with a plurality of groups which are evenly distributed at equal angles with the above pillar as the center and correspond one to one with the vertical poles, and each group includes a plurality of members which are distributed in the up-down direction and fixedly arranged on the vertical poles, and the damping and buffering structure includes a viscous damper, one end of the viscous damper is hinged to one end of a first hinged support rod, the other end of the first hinged support rod is fixedly connected to the vertical pole, the other end of the viscous damper is hinged to one end of a second hinged support rod, and the other end of the second hinged support rod is fixedly connected to the support sleeve located above.

[0016] Furthermore, the bolt-off display structure includes a bolt sleeve, the outer shape of the bolt sleeve is cylindrical, one end of the bolt sleeve is provided with an embedding hole which is nested with the mounting bolt, the mounting bolt and the embedding hole are connected by interference fit, the other end of the bolt sleeve is fixedly connected to one end of the connecting shaft, the other end of the connecting shaft is fixedly connected to the laser light, the side of the lower mounting plate close to the laser light is fixedly connected to one end of the connecting plate by bolts, the other end of the connecting plate is fixedly connected to the display panel, and the display panel and the connecting plate are integrally formed in an L-shape.

[0017] Furthermore, the cross-sectional shapes of the lower pier and the upper pillar are both square, and the limit push assembly is provided with four corresponding to the four outer sides of the upper pillar. When the hydraulic cylinder of the limit push assembly reaches the minimum stroke, the minimum distance between the limit push plate and the upper pillar is less than two-thirds of the width of the upper pillar.

[0018] Furthermore, the cross-sectional shape of the upper pillar is square, and the damping buffer structure is provided with four viscous dampers corresponding to the four outer sides of the upper pillar, and two adjacent viscous dampers are axially perpendicular to each other, and each viscous damper is inclined at an acute angle to the outer surface corresponding to the upper pillar.

[0019] A method for using a limited sliding seismic isolation device comprises the following steps:

[0020] S1: After the lower pier is cast, the outer sleeve is placed on the outer side of the lower pier from top to bottom to realize the installation of the support frame structure and the lower pier;

[0021] S2: The seismic isolation bearing is fixed on the upper side of the lower pier through the lower mounting plate and mounting bolts;

[0022] S3: Cast the upper pillar. After the casting of the upper pillar is completed, a shock-absorbing rod assembly is arranged between the lower pier and the upper pillar, and the limit push assembly and the damping buffer structure are fixedly installed on the support frame structure;

[0023] S4: When an earthquake of magnitude 4 or below or a slight vibration occurs, the shock-absorbing rod assembly can achieve shock absorption for the upper pillar, and when an earthquake of magnitude 4 or above occurs, the shock-absorbing rod of the shock-absorbing rod assembly is forced to break at the cut-off groove, and the damping buffer structure and the seismic isolation support cooperate to continue to absorb the vibration energy, and the limit push assembly can achieve limit blocking of the maximum offset position of the upper pillar;

[0024] S6: After an earthquake occurs, the limit push assembly can push and reset the upper support.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. When the seismic isolation bearing is in a small earthquake such as a vibration below magnitude 4, the shock-absorbing rod assembly can play a shock-absorbing role to prevent the displacement of the upper pillar and the upper part of the floor under slight vibration;

[0028] 2. In the case of a major earthquake, the shock-absorbing rod of the shock-absorbing rod assembly breaks at the cut-off groove, which does not affect the seismic isolation effect of the seismic isolation bearing;

[0029] 3. The limit push assembly can limit the sliding position of the upper pillar to avoid the collapse caused by the upper pillar sliding too far, which may cause the lower pier and the upper pillar to be dislocated and collapse. After the earthquake, the limit push assembly can also push the upper pillar to reset.

[0030] 4. The viscous damper can play a role in buffering and supporting the position deviation of the upper pillar. Through the expansion and contraction and angle change of the viscous damper, the upper pillar can be buffered and supported at any angle in the horizontal direction.

[0031] 5. The laser light can be used in conjunction with the display panel to magnify the deflection distance, making it quick and convenient to check whether the mounting bolts can be prevented from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 2 The present invention Figure 1 A schematic diagram of a top view structure;

[0035] Figure 3 The present invention Figure 1 Schematic diagram of the three-dimensional structure;

[0036] Figure 4 The present invention Figure 1 AA cross-sectional structural diagram;

[0037] Figure 5 The present invention Figure 1 A schematic diagram of the local enlarged structure at B;

[0038] Figure 6 The present invention Figure 3 A schematic diagram of the local enlarged structure at C;

[0039] Figure 7 It is a schematic diagram of the cross-sectional structure of the shock-absorbing rod assembly of the present invention.

[0040] The reference numerals in the accompanying drawings are as follows: 1. support frame structure; 1a. outer ring; 1b. bottom rod; 1c. connecting rod; 1d. vertical rod; 1e. oblique support rod; 2. limit push assembly; 2a. hydraulic cylinder; 2b. T-type support rod; 2c. limit push plate; 2d. support plate; 2e. push rod; 3. damping buffer structure; 3a. viscous damper; 3b. first hinged support rod; 3c. second hinged support rod; 4. bolt fall-off display structure; 401. bolt sleeve; 402. laser light; 403. connecting shaft rod ; 404, display panel; 405, connecting plate; 5, shock-absorbing rod assembly; 501, L-shaped support rod; 502, shock-absorbing rod; 503, cutting groove; 504, limiting sleeve; 505, spring; 506, supporting sleeve; 507, tightening bolt; 508, inner sleeve; 509, limiting shoulder plate; 510, shock-absorbing pad; 6, lower pier; 7, upper support pillar; 8, seismic isolation bearing; 8a, seismic isolation body; 8b, lower mounting plate; 8c, upper mounting plate; 8d, mounting bolt; 9, control panel. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-7As shown, the present invention provides a limited sliding seismic isolation device, including a lower pier 6, an upper pillar 7 and a control panel 9, an isolation bearing 8 is arranged between the lower pier 6 and the upper pillar 7, the isolation bearing 8 includes a seismic isolation body 8a, in actual application, the seismic isolation body 8a adopts a lead core rubber bearing, and an upper mounting plate 8c and a lower mounting plate 8b are respectively arranged on the upper and lower sides of the seismic isolation body 8a, the lower mounting plate 8b and the upper mounting plate 8c are respectively fixedly connected to the lower pier 6 and the upper pillar 7 by a plurality of mounting bolts 8d, and is characterized in that: a support frame structure 1 is arranged on the outer side of the lower pier 6, a limit pushing assembly 2 for limiting the displacement of the upper pillar 7 and resetting the upper pillar 7 after vibration is arranged on the support frame structure 1, a damping buffer structure 3 for buffering and shock absorbing the vibration displacement of the upper pillar 7 is also arranged on the support frame structure 1, and a shock absorbing rod body assembly 5 is arranged between the lower pier 6 and the upper pillar 7.

[0043] The support frame structure 1 includes a plurality of outer collars 1a evenly distributed in the up-down direction. The outer collars 1a are fixedly sleeved on the outer side of the lower pier 6. The outer side of the lower pier 6 is provided with four or more vertical poles 1d evenly distributed at equal angles with the pier as the center. Each vertical pole 1d is fixedly connected to the outer collar 1a through a plurality of connecting rods 1c. The number and position of the outer collars 1a and the connecting rods 1c correspond one to one. The bottom end of each vertical pole 1d is fixedly connected to a bottom rod 1b. An oblique support rod 1e is fixedly connected between the bottom rod 1b and the vertical pole 1d.

[0044] The position limiting pushing assembly 2 is provided with a plurality of groups which are evenly distributed at equal angles with the upper support pillar 7 as the center and correspond one to one with the vertical pole 1d. Each group includes a plurality of members which are distributed in the up-down direction and fixed on the vertical pole 1d. The position limiting pushing assembly 2 includes two hydraulic cylinders 2a which are symmetrically distributed with the vertical pole 1d as the center. A support plate 2d for supporting and fixing the upper and lower sides of the hydraulic cylinder 2a is fixedly provided on the vertical pole 1d. A T-shaped support rod 2b for position limiting support on the tail end of the hydraulic cylinder 2a is also fixedly provided on the vertical pole 1d. The push rod head end of the hydraulic cylinder 2a faces the upper support pillar 7 and is fixedly connected to the position limiting pushing plate 2c. A stop rod 2e is fixedly connected to the T-shaped support rod 2b and the bottom pole 1b. In practical applications, the position limiting push assembly 2 has dual functions. The first function is to limit the sliding position of the upper support 7 to avoid the upper support 7 sliding too far, which causes the lower pier 6 and the upper support 7 to collapse due to the vertical misalignment. After the earthquake, the position limiting push assembly 2 can also push and reset the upper support 7 through the cooperation of the hydraulic cylinder 2a and the position limiting push plate 2c, and the T-shaped support rod 2b and the support rod 2e can support and fix the hydraulic cylinder 2a in the position limiting and pushing and resetting conditions. The output end of the control panel 9 is electrically connected to the input end of the hydraulic cylinder 2a.

[0045] See the instruction manual Figure 6 and 7As shown, the shock-absorbing rod body assembly 5 is provided with a number of evenly distributed ones with the shock-absorbing support 8 as the center. The shock-absorbing support 8 includes two supporting sleeves 506 distributed up and down, and a shock-absorbing rod 502 is slidably connected between the two supporting sleeves 506. The two supporting sleeves 506 are provided with corresponding limiting sleeves 504 on the sides close to each other. The limiting sleeves 504 are sleeved on the outer side of the shock-absorbing rod 502, and the corresponding limiting sleeves 504 and supporting sleeves 506 are fixedly connected to each other with springs 505. The side wall of the limiting sleeve 504 is provided with a fixing bolt 507 for fixing with the shock-absorbing rod 502, and a circular cutting groove 503 is opened on the outer side wall of the shock-absorbing rod 502 between the two limiting sleeves 504, and the cross-sectional shape of the cutting groove 503 is V-shaped. The inner sleeve 508 is sleeved inside the support sleeve 506, and a shock-absorbing pad 510 is arranged between the outer wall of the inner sleeve 508 and the inner wall of the support sleeve 506. A limit shoulder plate 509 is fixedly arranged on the outer wall of the upper and lower ends of the inner sleeve 508, and the outer diameter of the limit shoulder plate 509 is larger than the inner diameter of the support sleeve 506. Through the above-mentioned specific structural design, when the earthquake is below level 4, the vibration and stress generated by the earthquake are realized by the shock-absorbing rod 502 to achieve the relative connection between the lower pier 6 and the upper support column 7, and the shock-absorbing pad 510 can absorb the slight deformation. When the earthquake is above level 4, the shock-absorbing rod 502 is broken from the cutting groove 503 under the action of the force, and the upper half of the shock-absorbing rod 502 is ejected from the inner sleeve 508 under the elastic force of the spring 505, avoiding interference with the sliding of the upper support column 7.

[0046] See the instruction manual Figure 2 , 3 As shown in Figures 6 and 7, the damping and buffering structure 3 is provided with a plurality of groups uniformly distributed at equal angles with the upper pillar 7 as the center and corresponding to the vertical pole 1d one by one, each group includes a plurality of members distributed in the up-down direction and fixedly arranged on the vertical pole 1d, and the damping and buffering structure 3 includes a viscous damper 3a, one end of the viscous damper 3a is hinged to one end of a first hinged support rod 3b, the other end of the first hinged support rod 3b is fixedly connected to the vertical pole 1d, the other end of the viscous damper 3a is hinged to one end of a second hinged support rod 3c, the other end of the second hinged support rod 3c is fixedly connected to the support sleeve 506 located above. Through the above-mentioned specific structural design, the viscous damper 3a can play a role of buffering support for the position deviation of the upper pillar 7, and the upper pillar 7 can be buffered and supported at any angle in the horizontal direction through the expansion and contraction and angle change of the viscous damper 3a.

[0047] See the instruction manual Figure 4 and 5As shown, the bolt-off display structure 4 includes a bolt sleeve 401, the outer shape of the bolt sleeve 401 is a cylindrical shape, one end of the bolt sleeve 401 is provided with an embedding hole that is nested with the mounting bolt 8d, the mounting bolt 8d and the embedding hole are connected by interference fit, the other end of the bolt sleeve 401 is fixedly connected to one end of the connecting shaft 403, the other end of the connecting shaft 403 is fixedly connected to the laser light 402, the side of the lower mounting plate 8b close to the laser light 402 is fixedly connected to one end of the connecting plate 405 by bolts, the other end of the connecting plate 405 is fixedly connected to the display panel 404, and the display panel 404 and the connecting plate 405 are integrally formed in an L shape. Through the above-mentioned specific structural design, after the seismic isolation support 8 is fixedly installed with the lower pier 6 and the upper support 7 respectively by the mounting bolts 8d, a bolt sleeve 401 is installed on the nut of each mounting bolt 8d, wherein the bolt sleeve 401 is made of elastic rubber material, and the embedded hole at one end of the bolt sleeve 401 is connected to the mounting bolt 8d in a tightly elastic connection manner. For details, see the attached manual. Figure 5 As shown, the bolt sleeve 401 is also provided with an insert sleeve at the connection with the connecting shaft rod 403, and the connecting shaft rod 403 and the insert sleeve are rotatably connected to each other. A fixing bolt for abutting and tightening the connecting shaft rod 403 is threadedly connected on the outer wall of the insert sleeve, so that the connecting shaft rod 403 can be adjusted in position in the insert sleeve, so that the laser lights 402 adjacent to the two mounting bolts 8d can indicate the same point position on the display board 404, and the display board 404 is shared by the two laser lights 402. When the staff checks regularly, they can turn on the laser light 402 to check whether the mounting bolt 8d has a position rotation change. The rotation of the laser light 402 around the connecting shaft rod 403 can enable the laser light 402 to realize an enlarged display of the deflection distance by cooperating with the display board 404, so that the anti-falling inspection of the mounting bolt 8d is quick and convenient.

[0048] The cross-sections of the lower pier 6 and the upper support 7 are both square, and the position-limiting push assembly 2 is provided with four corresponding to the four outer sides of the upper support 7. When the hydraulic cylinder 2a of the position-limiting push assembly 2 reaches the minimum stroke, the minimum distance between the position-limiting push plate 2c and the upper support 7 is less than two-thirds of the width of the upper support 7. Through the above-mentioned specific structural design, the position-limiting push plate 2c can achieve effective position-limiting support for the upper support 7, preventing the upper support 7 from being unstable due to the large offset distance of the upper support 7, and the position-limiting push assembly 2 is provided with four corresponding to the outer surface of the upper support 7, so that the upper support 7 can be pushed and reset from four directions.

[0049] The cross-section of the upper support 7 is square, and the damping buffer structure 3 is provided with four viscous dampers 3a corresponding to the four outer sides of the upper support 7, and the axes of the two adjacent viscous dampers 3a are perpendicular to each other, and each viscous damper 3a is inclined at an acute angle to the outer surface corresponding to the upper support 7. Figure 2 As shown, through the above-mentioned specific structural design, when the upper support 7 vibrates and displaces at any angle in the horizontal direction, the viscous damper 3a which is arranged obliquely with the outer surface of the upper support 7 can play a role in damping and shock reduction.

[0050] Working principle:

[0051] After the lower pier 6 is cast, the outer sleeve 1a is sleeved on the outer side of the lower pier 6 from top to bottom to realize the installation of the support frame structure 1 and the lower pier 6; specifically, the outer sleeve 1a is rectangular and integrally formed, and the structure is more stable, providing more stable support for the limit push assembly 2 and the damping buffer structure 3;

[0052] The seismic isolation support 8 is fixedly installed on the upper side of the lower pier 6 through the lower mounting plate 8b and the mounting bolts 8d; the upper support 7 is cast, and after the upper support 7 is cast, the shock absorbing rod assembly 5 is arranged between the lower pier 6 and the upper support 7, and the limit push assembly 2 and the damping buffer structure 3 are fixedly installed on the support frame structure 1;

[0053] When an earthquake of magnitude 4 or below or a slight vibration occurs, the shock-absorbing rod body assembly 5 can reduce the shock of the upper support 7. When an earthquake of magnitude 4 or above occurs, the shock-absorbing rod 502 of the shock-absorbing rod body assembly 5 is forced to break at the cutting groove 503, and the damping buffer structure 3 and the seismic isolation support 8 cooperate to continue to absorb the vibration energy, and the limit push assembly 2 can achieve the limit blocking of the maximum offset position of the upper support 7; after the earthquake occurs, the limit push assembly 2 can achieve the push reset of the upper support 7.

[0054] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A limited sliding seismic isolation device, comprising a bolt-off display structure (4), a lower pier (6) and an upper support column (7), wherein a seismic isolation support (8) is arranged between the lower pier (6) and the upper support column (7), the seismic isolation support (8) comprises a seismic isolation body (8a), and an upper mounting plate (8c) and a lower mounting plate (8b) are respectively arranged on the upper and lower sides of the seismic isolation body (8a), and the lower mounting plate (8b) and the upper mounting plate (8c) are respectively fixedly connected to the lower pier (6) and the upper support column (7) by a plurality of mounting bolts (8d), characterized in that: A support frame structure (1) is arranged on the outer side of the lower pier (6); a limit push assembly (2) is arranged on the support frame structure (1) for limiting the displacement of the upper support column (7) and resetting the upper support column (7) after vibration; a damping buffer structure (3) is also arranged on the support frame structure (1) for buffering and absorbing the vibration displacement of the upper support column (7); a shock absorbing rod assembly (5) is arranged between the lower pier (6) and the upper support column (7); The support frame structure (1) comprises a plurality of outer rings (1a) uniformly distributed in the vertical direction, the outer rings (1a) being fixedly sleeved on the outer side of the lower pier (6), the outer side of the lower pier (6) being provided with four or more vertical poles (1d) uniformly distributed at equal angles with the lower pier as the center, each vertical pole (1d) being fixedly connected to the outer ring (1a) via a plurality of connecting rods (1c), wherein the number and position of the outer rings (1a) and the connecting rods (1c) correspond one to one, the bottom end of each vertical pole (1d) being fixedly connected to a bottom rod (1b), and an oblique support rod (1e) being fixedly connected to each other between the bottom rod (1b) and the vertical pole (1d); The position-limiting push assembly (2) is provided with a plurality of groups which are evenly distributed at equal angles with the upper support (7) as the center and correspond one to one with the vertical pole (1d), each group comprising a plurality of members which are distributed in the up-down direction and fixedly arranged on the vertical pole (1d), the position-limiting push assembly (2) comprising two hydraulic cylinders (2a) which are symmetrically distributed with the vertical pole (1d) as the center, a support plate (2d) which is fixedly arranged on the vertical pole (1d) and is used to support and fix the upper and lower sides of the hydraulic cylinder (2a), a T-shaped support rod (2b) which is used to provide position-limiting support for the tail end of the hydraulic cylinder (2a) is also fixedly arranged on the vertical pole (1d), the push rod head end of the hydraulic cylinder (2a) faces the upper support (7) and is fixedly connected to the position-limiting push plate (2c), and a stop rod (2e) is fixedly connected between the T-shaped support rod (2b) and the bottom pole (1b); The shock absorbing rod body assembly (5) is provided with a plurality of evenly distributed ones with the shock isolation support (8) as the center, the shock isolation support (8) comprises two support sleeves (506) distributed up and down, a shock absorbing rod (502) is slidably connected through the two support sleeves (506), and the two support sleeves (506) are provided with respective corresponding limiting sleeves (504) on the sides close to each other, the limiting sleeves (504) are sleeved on the outside of the shock absorbing rod (502), and the corresponding limiting sleeves (504) and supporting sleeves (506) are fixedly connected to each other with springs (505), and the side walls of the limiting sleeves (504) are provided with fixing bolts (507) for being tightly connected to the shock absorbing rod (502), and the outer wall of the shock absorbing rod (502) between the two limiting sleeves (504) is provided with a circular ring-shaped cutting groove (503), and the cross-sectional shape of the cutting groove (503) is V-shaped; An inner sleeve (508) is sleeved inside the support sleeve (506), a shock-absorbing pad (510) is provided between the outer wall of the inner sleeve (508) and the inner wall of the support sleeve (506), and a limiting shoulder plate (509) is fixedly provided on the outer walls of the upper and lower ends of the inner sleeve (508), and the outer diameter of the limiting shoulder plate (509) is greater than the inner diameter of the support sleeve (506); The damping buffer structure (3) is provided with a plurality of groups which are evenly distributed at equal angles with the above pillar (7) as the center and correspond one to one with the vertical pole (1d), each group comprising a plurality of members which are distributed in the up-down direction and fixedly arranged on the vertical pole (1d), the damping buffer structure (3) comprising a viscous damper (3a), one end of the viscous damper (3a) being hinged to one end of a first hinged support rod (3b), the other end of the first hinged support rod (3b) being fixedly connected to the vertical pole (1d), the other end of the viscous damper (3a) being hinged to one end of a second hinged support rod (3c), the other end of the second hinged support rod (3c) being fixedly connected to a support sleeve (506) located above.

2. The limited sliding isolation device according to claim 1, characterized in that: The bolt-off display structure (4) comprises a bolt sleeve (401), the bolt sleeve (401) having a cylindrical shape, one end of the bolt sleeve (401) being provided with an embedding hole which is embedded with the mounting bolt (8d), the mounting bolt (8d) and the embedding hole being connected by interference fit, the other end of the bolt sleeve (401) being fixedly connected to one end of a connecting shaft (403), the other end of the connecting shaft (403) being fixedly connected to a laser light (402), one end of a connecting plate (405) being fixedly connected to a side of the lower mounting plate (8b) close to the laser light (402) by means of bolts, the other end of the connecting plate (405) being fixedly connected to a display panel (404), the display panel (404) and the connecting plate (405) being integrally formed in an L-shape.

3. The limited sliding isolation device according to claim 1, characterized in that: The cross-sectional shapes of the lower pier (6) and the upper support (7) are both square, and the position-limiting push assembly (2) is provided with four corresponding to the four outer sides of the upper support (7). When the hydraulic cylinder (2a) of the position-limiting push assembly (2) reaches the minimum stroke, the minimum distance between the position-limiting push plate (2c) and the upper support (7) is less than two-thirds of the width of the upper support (7).

4. The limited sliding isolation device according to claim 1, characterized in that: The cross-section of the upper support (7) is square, and the damping buffer structure (3) is provided with four viscous dampers (3a) corresponding to the four outer sides of the upper support (7), and two adjacent viscous dampers (3a) are axially perpendicular to each other, and each viscous damper (3a) is inclined at an acute angle to the outer surface corresponding to the upper support (7).

5. The method for using the limited sliding isolation device according to claim 1, characterized in that: The following steps are involved: S1: After the lower pier (6) is cast, the outer sleeve (1a) is sleeved from top to bottom on the outer side of the lower pier (6) to achieve installation of the support frame structure (1) and the lower pier (6); S2: The seismic isolation support (8) is fixedly mounted on the upper side of the lower pier (6) via a lower mounting plate (8b) and mounting bolts (8d); S3: Casting the upper support (7). After the casting of the upper support (7) is completed, a shock-absorbing rod assembly (5) is arranged between the lower pier (6) and the upper support (7), and the limit push assembly (2) and the damping buffer structure (3) are fixedly installed on the support frame structure (1); S4: When an earthquake of magnitude 4 or below or a slight vibration occurs, the shock absorbing rod assembly (5) can achieve shock absorption for the upper pillar (7), and when an earthquake of magnitude 4 or above occurs, the shock absorbing rod (502) of the shock absorbing rod assembly (5) is forced to break at the cut-off groove (503), and the damping buffer structure (3) and the seismic isolation support (8) cooperate to continue to absorb the vibration energy, and the limit push assembly (2) can achieve limit blocking of the maximum offset position of the upper pillar (7); S6: After an earthquake occurs, the limit push assembly (2) can push and reset the upper support (7).

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