A friction pendulum support that can resist upward pulling force

Abstract

This invention relates to the field of seismic isolation and vibration reduction engineering technology, and discloses a friction pendulum bearing capable of resisting uplift forces. This friction pendulum bearing includes a liner unit, a support unit, a reset unit, and a limiting unit. The liner unit includes a steel ball-shaped liner and pressure-bearing sliding plates symmetrically arranged on the upper and lower sidewalls of the steel ball-shaped liner. The support unit includes an upper support and a lower support arranged opposite to each other, and retaining ring assemblies arranged on the opposite sidewalls of the upper and lower supports. The reset unit includes flange plates respectively arranged on the sidewalls of the upper and lower supports and a reset member connecting the opposite flange plates. The friction pendulum bearing of this invention dissipates seismic energy through the conversion of kinetic energy, potential energy, and thermal energy during frictional sliding. It has a compact overall structure, high load-bearing capacity, and can reliably withstand and transmit forces when the superstructure of a bridge or building generates forces in different directions, ensuring that it can resist uplift forces regardless of displacement in any direction.

Description

Technical Field

[0001] This invention relates to the field of building seismic isolation engineering technology, and in particular to a friction pendulum bearing that can resist uplift forces. Background Technology

[0002] Friction pendulum bearings are widely used in existing building and bridge engineering for seismic isolation and damping. Conventional friction pendulum bearings rely on the spherical fit of a double-convex spherical crown between the upper and lower support plates. The components rotate and slide against each other to achieve continuous load-bearing, displacement, and seismic isolation functions. During an earthquake, the bearing can slide in all directions, using a simple pendulum mechanism to extend the natural period of the superstructure, reducing the transmission of seismic forces to the superstructure. During sliding, friction damping dissipates some seismic energy, reducing the structure's seismic response and protecting its safety.

[0003] Conventional friction pendulum seats generally adopt a compound pendulum form, meaning that there is sliding displacement on both the upper and lower surfaces. Compared with the single pendulum structure where all sliding displacement is placed on the upper plate, this double-sliding structure has the advantages of a smaller total projected area, making the compound pendulum structure lighter and better able to achieve large displacement performance.

[0004] However, during earthquakes, there is often an upward force, especially on suspension bridges, cable-stayed bridges, and multi-story buildings, where displacement and upward pull may occur simultaneously. Conventional friction pendulum bearings cannot meet the requirements of this condition. Furthermore, existing friction pendulum bearings can only reset under the action of gravity after swinging. However, after frictional wear occurs on the surface of the steel liner plate, the center of gravity of its reset will shift to a certain extent, which may gradually endanger the safety of bridges and buildings. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in high-rise buildings and bridges during earthquakes, this invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a friction pendulum support that can resist upward pulling force. The purpose is to provide a friction pendulum support that is simple in structure, economical and practical, can not only bear load, but also resist upward pulling force within any designed displacement, and can maintain frictional reset, so as to overcome the shortcomings of the prior art.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a friction pendulum support that can resist upward pulling force, the friction pendulum support comprising a liner unit, a support unit, a reset unit, and a limiting unit, wherein the liner unit comprises a steel ball plate and a pressure-bearing slide plate symmetrically arranged on the upper and lower side walls of the steel ball plate; the support unit comprises an upper support and a lower support arranged opposite to each other, and a retaining ring assembly disposed on the opposite side walls of the upper support and the lower support; the reset unit comprises flange plates respectively disposed on the side walls of the upper support and the lower support, and a reset member connected between the opposite flange plates; and the limiting unit is disposed between the steel ball plate and the retaining ring assembly, comprising a pressure ring assembly, a pull ring assembly, and a pull plate assembly connected in sequence, the pull plate assembly being connected to the retaining ring assembly.

[0009] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force according to the present invention, wherein: the flange plates are evenly distributed on the edge sidewalls of the upper support and the lower support; the reset member includes a damping member, connecting plates symmetrically connected to both ends of the damping member, and a reset spring sleeved on the outside of the damping member, and the two ends of the reset spring are respectively connected to the sidewalls of the two connecting plates.

[0010] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force described in this invention, wherein: the upper and lower end faces of the steel liner plate are symmetrically provided with a circular groove and an circumferential step, and the circumferential step is located outside the circular groove; the pressure-bearing slide plate can be fitted into the circular groove; a first threaded hole is provided on the end face of the circumferential step.

[0011] As a preferred embodiment of the friction pendulum support that can resist upward pulling force according to the present invention, the pressure ring assembly includes a pressure ring that can be placed on the circumferential step and a first steel ring disposed on the lower end sidewall of the pressure ring, and a first screw that can be connected to the first threaded hole.

[0012] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force according to the present invention, wherein: the pull ring assembly includes a pull ring and a first sliding plate ring and a stainless steel strip disposed on the side wall of the pull ring; the pull ring is annular, and a placement ring groove is formed on the top surface, and the first sliding plate ring is placed in the placement ring groove; the bottom surface of the side wall of the pull ring is provided with an arc surface; the stainless steel strip is disposed at the arc surface.

[0013] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force according to the present invention, wherein: the pull plate assembly includes a pull plate and a slide bar and a second steel ring disposed on the side wall of the pull plate; the pull plate is frustum-shaped, with an "S"-shaped through cavity in its middle, and a placement platform is provided on both parallel sides of the inner cavity of the through cavity, and a limiting arc groove is provided in the middle of the placement platform; the slide bar is fitted onto the limiting arc groove; the second steel ring is fitted onto the bottom side wall of the pull plate.

[0014] As a preferred embodiment of the friction pendulum support that can resist upward pulling force according to the present invention, wherein: the pressure ring can be placed on the placement ring groove of the pull ring, and the first steel ring and the first sliding plate ring are in close contact to form a first planar rotating pair.

[0015] As a preferred embodiment of the friction pendulum support that can resist upward pulling force according to the present invention, the pull ring can be placed on the surface of the limiting arc groove in the through cavity through the arc surface of the bottom, and the stainless steel strip and the slide bar are in close contact to form a guide sliding pair.

[0016] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force according to the present invention, wherein: the upper support and the lower support have the same structure; a spherical concave surface is provided at the middle of the bottom end of the lower support, and an annular boss is provided at the edge of the spherical concave surface; a second threaded hole is provided on the end face of the annular boss; the retaining ring assembly includes a retaining ring, a second sliding plate ring provided on the side wall of the retaining ring, and a second screw, the second screw being able to be engaged and connected in the second threaded hole.

[0017] As a preferred embodiment of the friction pendulum support capable of resisting upward pulling force according to the present invention, wherein: the second sliding plate ring and the second steel ring are in close contact to form a second planar rotation pair; the side wall of the pressure-bearing sliding plate away from the steel liner ball plate slides in contact with the concave surface of the ball to form a spherical sliding pair.

[0018] The beneficial effects of this invention are:

[0019] 1. The friction pendulum support of the present invention has a compact structure, large load-bearing capacity, and organic combination of tensile structure and horizontal structure. The overall design is reasonable. When the beam and the upper structure of the building generate forces in different directions, this support can reliably bear and transmit the force.

[0020] 2. The friction pendulum bearing of the present invention converts the vibration of a building into sliding friction of the pendulum bearing. During the friction sliding process, seismic energy is dissipated through the conversion of kinetic energy, potential energy, and thermal energy. The curved surface oscillation prolongs the vibration period and reduces acceleration, thereby reducing seismic force. The relatively independent sliding and rotation of the first and second plane rotating joints and the guide sliding joints ensure arbitrary displacement of the normal compound pendulum structure bearing. The structural combination of pressure ring, pull ring, pull plate, and retaining ring ensures that displacement in any direction can resist upward pull force. The reset unit further dissipates seismic energy and maintains good reset capability of the steel liner ball plate. This improves the efficiency of building seismic isolation and ensures building safety. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of the friction pendulum support that can resist upward pulling force according to the present invention.

[0023] Figure 2 This is a schematic diagram of the overall exploded structure of the friction pendulum support that can resist upward pulling force according to the present invention.

[0024] Figure 3 This is a schematic diagram of the connection structure between the liner unit and the limiting unit of the friction pendulum support that can resist upward pulling force according to the present invention.

[0025] Figure 4 This is a schematic diagram of the liner unit structure of the friction pendulum support that can resist upward pulling force according to the present invention.

[0026] Figure 5 This is a schematic diagram of the pull ring structure of the friction pendulum support that can resist upward pulling force according to the present invention.

[0027] Figure 6 This is a top view schematic diagram of the friction pendulum support of the present invention that can resist upward pulling force.

[0028] Figure 7 This is a schematic BB cross-sectional view of the friction pendulum support that can resist upward pulling force according to the present invention.

[0029] Figure 8 This is a schematic diagram illustrating the force and rotation analysis of the pull plate of the friction pendulum support that can resist upward pulling force according to the present invention. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1

[0035] Reference Figure 1 and 2 The first embodiment of the present invention provides a friction pendulum support that can resist upward pulling force. The friction pendulum support includes a liner unit 100, a support unit 200, a reset unit 300, and a limiting unit 400. The liner unit 100 is installed inside the support unit 200 and is limited and connected by the limiting unit 400 to form a swingable friction pendulum support structure. The reset unit 300 is connected to the support unit 200 and is used to limit the position of the two supports. It can both buffer and dampen shock and can be used to reset the liner unit 100.

[0036] Specifically, the liner unit 100 includes a steel liner ball plate 101 and pressure-bearing slide plates 102 symmetrically arranged on the upper and lower side walls of the steel liner ball plate 101; the support unit 200 includes an upper support 201 and a lower support 202 arranged opposite to each other, and a retaining ring assembly 203 arranged on the opposite side walls of the upper support 201 and the lower support 202; the reset unit 300 includes flange plates 301 respectively arranged on the side walls of the upper support 201 and the lower support 202 and a reset member 302 connected between the opposite flange plates 301; the limiting unit 400 is arranged between the steel liner ball plate 101 and the retaining ring assembly 203, and includes a pressure ring assembly 401, a pull ring assembly 402 and a pull plate assembly 403 connected in sequence, with the pull plate assembly 403 connected to the retaining ring assembly 203.

[0037] Among them, the steel ball liner plate 101 is a spherical crown liner plate, which is set between the upper support 201 and the lower support 202. The pressure-bearing slide plate 102 is symmetrically installed on the upper and lower end faces of the steel ball liner plate 101 for contact sliding with the upper support 201 and the lower support 202. The reset member 302 is connected to the upper and lower distributed support side walls to maintain the relative stability of the position between the two supports, and further maintains the steel ball liner plate 101 in a stable position in the middle of the support. The pressure ring assembly 401, the pull ring assembly 402 and the pull plate assembly 403 are connected in sequence to limit the position of the steel ball liner plate 101, and are connected to the upper support 201 and the lower support 202 through the retaining ring assembly 203, so that the steel ball liner plate 101 is confined within the support unit 200.

[0038] Example 2

[0039] Reference Figures 2-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the upper and lower end faces of the steel liner plate 101 are symmetrically provided with a circular groove 101a and a circumferential step 101b, and the circumferential step 101b is located outside the circular groove 101a; the pressure-bearing slide plate 102 can be fitted into the circular groove 101a; a first threaded hole 101b-1 is provided on the end face of the circumferential step 101b.

[0040] Compared to Embodiment 1, the steel liner plate 101 is ellipsoidal in shape, and its top view projection is circular. The circular grooves 101a on its upper and lower end faces are convex spherical with equal depths, and the pressure-bearing slide plate 102 is fitted into them. The circumferential step 101b is located on the outer ring side of the circular groove 101a and is used for the installation of the pressure ring assembly 401. The first threaded hole 101b-1 is used for the connection and fixation of screws. It should be noted that multiple first threaded holes 101b-1 are equally spaced.

[0041] The remaining structure is the same as that in Example 1.

[0042] Example 3

[0043] Reference Figures 2-7 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the pressure ring assembly 401 includes a pressure ring 401a that can be placed on the circumferential step 101b, a first steel ring 401b disposed on the lower side wall of the pressure ring 401a, and a first screw 401c that can be connected to the first threaded hole 101b-1.

[0044] The pressure ring assembly 401 is used to connect with the steel liner plate 101. The pressure ring 401a is ring-shaped with a spherical upper end and has a certain height difference with the installed pressure-bearing slide plate 102, and does not contact the spherical concave surface 202a of the upper support 201 or the lower support 202. Furthermore, the size of the pressure ring 401a matches the size of the circumferential step 101b, that is, the pressure ring 401a can fit into the circumferential step 101b, and the side wall of the pressure ring 401a has threaded holes corresponding one-to-one with the first threaded holes 101b-1. The pressure ring 401a can be fixedly connected to the steel liner plate 101 by the first screw 401c; while the first steel ring 401b is used for frictional rotation between the pressure ring 401a and the pull ring 402a.

[0045] Furthermore, the pull ring assembly 402 includes a pull ring 402a, a first sliding ring 402b and a stainless steel strip 402c disposed on the side wall of the pull ring 402a; the pull ring 402a is annular, and a ring placement groove 402a-1 is formed on its top surface, and the first sliding ring 402b is placed in the ring placement groove 402a-1; the bottom surface of the side wall of the pull ring 402a is provided with an arc surface H; the stainless steel strip 402c is disposed at the arc surface H.

[0046] Specifically, the pull ring assembly 402 is used to connect the pressure ring assembly 401 and the pull plate assembly 403; specifically, the pull ring 402a has a ring-shaped planar projection and its longitudinal cross-section is an L-shaped step. It should be noted that the inner diameter of the pull ring 402a is larger than the outer diameter of the steel liner plate 101, that is, there is a certain gap between the two, while the maximum diameter of the ring groove 402a-1 is the same as the maximum diameter of the pressure ring 401a.

[0047] The first sliding ring 402b is placed in the placement ring groove 402a-1. When the pressure ring 401a is placed in the placement ring groove 402a-1, the first steel ring 401b and the first sliding ring 402b can fit together and form the first planar rotating pair P1.

[0048] A symmetrical arc is cut off from the ring body of pull ring 402a, with the two arc lengths parallel to each other, forming parallel sides P. The width between the two parallel sides P is the same as the width of the through cavity 403a-1 opened in the middle of pull plate 403a, which is used to stably place pull ring 402a in through cavity 403a-1 without affecting the sliding of pull ring 402a in through cavity 403a-1. The arc surface H on the bottom side wall of parallel side P has the same curvature as the concave spherical surface 202a in the support, and the stainless steel strip 402c is welded into the arc surface and adapted to the arc surface H.

[0049] Furthermore, the pull plate assembly 403 includes a pull plate 403a, a slide bar 403b disposed on the side wall of the pull plate 403a, and a second steel ring 403c; the pull plate 403a is frustum-shaped, with an "S"-shaped through cavity 403a-1 in its middle, and a placement platform 403a-2 is provided on both parallel sides of the inner cavity of the through cavity 403a-1, and a limiting arc groove 403a-3 is provided in the middle of the placement platform 403a-2; the slide bar 403b is placed in the limiting arc groove 403a-3; the second steel ring 403c is disposed on the bottom side wall of the pull plate 403a.

[0050] Specifically, the pull plate 403a is used to slide and limit the steel liner plate 101. The pull plate 403a is circular on the outside and frustum-shaped at the top. The through cavity 403a-1 in the middle of the pull plate 403a is S-shaped, meaning that both ends extend bidirectionally along the middle. Placement platforms 403a-2 are formed on both sides of the S-shaped cavity, allowing the pull ring 402a to be placed on them. The limiting arc groove 403a-3 in the middle of the placement platform 403a-2 has the same curvature as the arc surface H at the bottom of the pull ring 402a, meaning that the arc surface H can slide within the limiting arc groove 403a-3. It should be noted that when the S-shaped through cavity 403a-1 slides with the pull ring 402a, it can convert the energy of the building vibration in any direction into a portion of the energy of frictional rotation by driving the first planar revolute pair P1 to rotate. It should also be noted that in this design, the tension plates 403a used for the upper and lower parts of the steel liner plate 101 are placed in a staggered manner at 90 degrees using an "S"-shaped through cavity 403a-1, as shown in the attached diagram. Figure 8 As shown, its beneficial effect is that when the steel liner plate 101 is pushed at any angle, it can push the side wall of the through cavity 403a-1 of the pull plate 403a, thereby pushing the pull plate 403a to rotate, driving the first planar rotating pair P1 to rotate, and consuming the potential energy of the building vibration.

[0051] Furthermore, a slider 403b with a corresponding curvature is placed or fixed on the groove surface of the limiting arc groove 403a-3. When the pull ring 402a is placed on the surface of the limiting arc groove 403a-3, the stainless steel strip 402c and the slider 403b are in close contact, forming a guide sliding pair D.

[0052] The remaining structure is the same as that in Example 2.

[0053] Example 4

[0054] Reference Figure 1 , 27 is the fourth embodiment of the present invention. This embodiment differs from the third embodiment in that: the upper support 201 and the lower support 202 have the same structure; a spherical concave surface 202a is provided in the middle of the bottom end of the lower support 202, and an annular boss 202b is provided at the edge of the spherical concave surface 202a; a second threaded hole 202b-1 is provided on the end face of the annular boss 202b; the retaining ring assembly 203 includes a retaining ring 203a, a second sliding plate ring 203b provided on the side wall of the retaining ring 203a, and a second screw 203c, which can be engaged and connected in the second threaded hole 202b-1.

[0055] Compared to Embodiment 3, the support unit 200 further serves as the support portion of the friction pendulum support, for the limiting connection of the steel liner plate 101, and for connection and installation with buildings or bridges. Generally, relatively independent upper support 201 and lower support 202 are used, and the structures of the two supports are generally the same. Of course, different support structures can also be used, but the working principle of the friction pendulum remains the same. In this embodiment, a support with the same structural design is used as an example for explanation.

[0056] Specifically, the structure of the support 202 is described below. It is cylindrical in shape, with connecting lugs E welded around its perimeter for connecting the sleeve, and corresponding openings. It can be installed and fixed via the connecting lugs E and corresponding openings on the surrounding side walls. Its lower end is flat, while its upper end is recessed, forming a spherical concave surface 202a. The concave spherical surface 201a can be coated with stainless steel or electroplated with hard chrome to improve rigidity and wear resistance. Furthermore, an annular boss 202b is formed at the edge of the concave surface 202a. The annular boss 202b can limit the horizontal displacement of the steel liner 101. A second threaded hole 202b-1 is opened on the top end face of the boss for connecting the retaining ring assembly 203.

[0057] Furthermore, in the retaining ring assembly 203, the retaining ring 203a is annular, with multiple bolt holes spaced evenly on its axial sidewall for connection of the second screw 203c, allowing the retaining ring 203a to be connected to the support end face. The second sliding plate ring 203b is welded to the end face sidewall of the retaining ring 203a near the inner circle. It is also annular, with an outer diameter smaller than that of the retaining ring 203a, but larger than that of the inner circle of the retaining ring 203a.

[0058] The second sliding plate ring 203b and the second steel ring 403c are in close contact to form a second planar rotating pair P2; the side wall of the pressure-bearing sliding plate 102 away from the steel liner ball plate 101 slides in contact with the concave surface 202a of the ball to form a spherical sliding pair Q.

[0059] It should also be noted that the steel liner plate 101 is symmetrically arranged on both sides. Therefore, the components arranged between the upper and lower ends of the steel liner plate 101 and the upper support 201 and the lower support 202 are the same.

[0060] The remaining structure is the same as that in Example 3.

[0061] Example 5

[0062] Reference Figure 1 , 2 6 is the fifth embodiment of the present invention. This embodiment differs from the fourth embodiment in that: the flange plates 301 are evenly distributed on the edge sidewalls of the upper support 201 and the lower support 202; the reset member 302 includes a damping member 302a, connecting plates 302b symmetrically connected to both ends of the damping member 302a, and a reset spring 302c sleeved on the outside of the damping member 302a, and the two ends of the reset spring 302c are respectively connected to the sidewalls of the two connecting plates 302b.

[0063] Compared to embodiment 4, the flange plate 301 is further disposed on the edge sidewall of the upper support 201 and the lower support 202, and is distributed at intervals with the ear plate E. The flange plates 301 disposed on the sidewall of the upper support 201 and the lower support 202 correspond one to one, that is, are disposed in pairs, and the reset member 302 is installed between the pairs of flange plates 301.

[0064] Specifically, the damping element 302a in the reset component 302 can be used to buffer vibrations, and its overall length is variable, allowing it to always be connected between the upper and lower supports of the friction pendulum, adapting to the upper and lower supports in a misaligned distribution state. Both the reset spring 302c and the damping element 302a can be used for energy buffering, thereby assisting in the energy dissipation inside the friction pendulum.

[0065] The remaining structure is the same as that in Example 4.

[0066] Refer to the instruction manual. Figures 1-8As shown, this composite friction pendulum support is installed at a predetermined position on a building or bridge. When the building or bridge vibrates, displacement occurs between the upper support 201 and the lower support 202. The reset member 302 is stretched from its initial length by the misaligned support, increasing its length. A spherical sliding pair Q exists between the pressure-bearing sliding plate 102 and the spherical concave surface 202a, capable of handling slippage with a deflection direction. During the movement of the steel-lined spherical plate 101, the limiting effect of the "S"-shaped through cavity 403a-1 pushes the pull plate 403a to rotate, i.e., the first planar rotating pair P1 operates. Under the action of friction, the two plates... This process consumes a certain amount of vibration energy. The pressure ring 401a is connected to the steel liner plate 101. When the steel liner plate 101 moves, it pushes the pull ring 402a to move together within the through cavity 403a-1 via the pressure ring 401a. Since the two parallel sides P of the pull ring 402a are located within the placement platform 403a-2, combined with the vibration of the steel liner plate 101's single-sided structure during displacement, an eccentric force is generated. The outer end of the pull plate 403a is circular, and the rotating joint will adapt to the eccentric force and rotate, meaning the second planar rotating joint P2 will rotate. After rotation, the guide sliding joint D will gradually rotate in the direction of the force, and the steel liner plate 101 will also gradually move in the direction of the force.

[0067] Because of the rotation of the first planar revolute joint P1 on the steel liner plate 101, the rotation of the upper end of the upper support 201 and the movement of its lower end will not affect the movement of the lower support 202. When the seismic force acts on the upper end face of the steel liner plate 3, the movement of the steel liner plate 3 will also cause the lower end face to undergo the aforementioned movement, and they will coordinate with each other to make displacements, which is consistent with the characteristics of a conventional compound pendulum structure support.

[0068] When an upward pulling force occurs, the retaining ring 203a fixed to the upper support 201 transmits the upward pulling force to the pull plate 403a, which is confined within the support. The pull plate 403a then transmits the force through the limiting arc groove 403a-3 at the guide to the point where it interlocks with the pull ring 402a. The pull ring 402a and the pressure ring 401a are then pulled together, transmitting the force to the steel liner ball plate 101. The lower support 202 has the same structure, thus realizing the transmission of force and restricting the upward displacement of the support, thereby resisting the upward pulling force. Furthermore, the damping element 302a and the return spring 302c in the reset element 302 both have a restoring force to maintain the initial state, thus generating a tensile force between the lower support 202 and the upper support 201, thereby resisting the upward pulling force.

[0069] By combining the above structural elements—namely, the guiding of the guide sliding pair D and the relatively independent rotation of the first planar rotary pair P1 and the second planar rotary pair P2—with the tensile strength of each component, this friction pendulum support can resist upward pulling forces in any design displacement combination.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A friction pendulum support capable of resisting upward pulling force, characterized in that: include, The liner unit (100) includes a steel liner ball plate (101) and a pressure-bearing slide plate (102) symmetrically arranged on the upper and lower side walls of the steel liner ball plate (101). The support unit (200) includes an upper support (201) and a lower support (202) disposed opposite to each other, and a retaining ring assembly (203) disposed on the sidewalls of the opposite surfaces of the upper support (201) and the lower support (202). The reset unit (300) includes flange plates (301) respectively disposed on the side walls of the upper support (201) and the lower support (202), and a reset member (302) connected between the opposing flange plates (301); and, The limiting unit (400) is disposed between the steel ball plate (101) and the retaining ring assembly (203), and includes a pressure ring assembly (401), a pull ring assembly (402) and a pull plate assembly (403) connected in sequence, wherein the pull plate assembly (403) is connected to the retaining ring assembly (203); The flange plates (301) are evenly distributed on the edge sidewalls of the upper support (201) and the lower support (202); The reset component (302) includes a damping component (302a), connecting plates (302b) symmetrically connected to both ends of the damping component (302a), and a reset spring (302c) sleeved on the outside of the damping component (302a), wherein the two ends of the reset spring (302c) are respectively connected to the side walls of the two connecting plates (302b). The upper and lower end faces of the steel liner plate (101) are symmetrically provided with a circular groove (101a) and a circumferential step (101b), and the circumferential step (101b) is located outside the circular groove (101a); The pressure-bearing sliding plate (102) can be fitted into the circular groove (101a); A first threaded hole (101b-1) is provided on the end face of the circumferential step (101b). The pressure ring assembly (401) includes a pressure ring (401a) that can be placed on the circumferential step (101b), a first steel ring (401b) disposed on the lower side wall of the pressure ring (401a), and a first screw (401c) that can be connected to the first threaded hole (101b-1). The pull ring assembly (402) includes a pull ring (402a), a first sliding ring (402b) and a stainless steel strip (402c) disposed on the side wall of the pull ring (402a). The pull ring (402a) is annular, and a placement groove (402a-1) is provided on the top surface. The first slide ring (402b) is placed in the placement groove (402a-1). The bottom surface of the ring sidewall of the pull ring (402a) is provided with an arc surface (H); The stainless steel strip (402c) is fitted at the arc surface (H); The pull plate assembly (403) includes a pull plate (403a), a slide bar (403b) disposed on the side wall of the pull plate (403a), and a second steel ring (403c). The pull plate (403a) is frustum-shaped, with an "S"-shaped through cavity (403a-1) in the middle. Placement platforms (403a-2) are provided on both parallel sides of the inner cavity of the through cavity (403a-1), and a limiting arc groove (403a-3) is provided in the middle of the placement platform (403a-2). The slide bar (403b) is placed on the limiting arc groove (403a-3); The second steel ring (403c) is fitted onto the bottom side wall of the pull plate (403a); The pressure ring (401a) can be placed in the placement groove (402a-1) of the pull ring (402a), and the first steel ring (401b) and the first sliding plate ring (402b) are in close contact to form a first planar rotating pair (P1). The pull ring (402a) can be placed on the surface of the limiting arc groove (403a-3) in the through cavity (403a-1) through the arc surface (H) at the bottom, and the stainless steel strip (402c) and the slide bar (403b) are in close contact to form a guide sliding pair (D). The upper support (201) and the lower support (202) have the same structure; The lower support (202) has a spherical concave surface (202a) at the middle of its bottom end, and an annular boss (202b) at the edge of the spherical concave surface (202a); a second threaded hole (202b-1) is provided on the end face of the annular boss (202b). The retaining ring assembly (203) includes a retaining ring (203a), a second sliding ring (203b) disposed on the side wall of the retaining ring (203a), and a second screw (203c), which can be engaged in the second threaded hole (202b-1).

2. The friction pendulum support capable of resisting upward pulling force according to claim 1, characterized in that: The second sliding plate ring (203b) and the second steel ring (403c) are in close contact to form a second planar rotating pair (P2); The side wall of the pressure-bearing slide plate (102) away from the steel liner ball plate (101) slides in contact with the concave surface of the ball (202a) to form a spherical sliding pair (Q).

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