A tensile friction pendulum support

Abstract

The present invention relates to the technical field of friction pendulum bearings, and specifically discloses a tensile friction pendulum bearing, comprising an upper seat plate, a middle seat plate, a spherical crown lining plate, and a lower seat plate, which are sequentially arranged and slidably engaged with each other from top to bottom; a pull bolt coaxial with the middle seat plate and the spherical crown lining plate and connected to the middle seat plate or the spherical crown lining plate; when the pull bolt is connected to the spherical crown lining plate, the pull bolt passes through the middle seat plate and connects to the spherical crown lining plate, forming a sliding friction pair four with the middle seat plate; when the pull bolt is connected to the middle seat plate, the pull bolt passes through the spherical crown lining plate and connects to the middle seat plate, forming a sliding friction pair four with the middle seat plate. The present invention can resist tensile forces while achieving a seismic isolation function, thereby better protecting the structural system.

Description

Technical Field

[0001] The present invention relates to the technical field of friction pendulum bearings, and more particularly to a tensile friction pendulum bearing. Background Art

[0002] As a new type of seismic isolation device, friction pendulum bearing has been widely used in the construction field in recent years. Its function is to assume the basic functions of conventional bearings (bearing pressure, rotation, displacement, etc.), while realizing friction energy dissipation when the structure slides relative to the earthquake through a pendulum structure, and appropriately extending the natural vibration period of the structural system, thereby playing a role in protecting structural members (common friction pendulum bearing structural types can be seen in JT / T927-2014 and JT / T852-2013 standards).

[0003] However, with the development of structural system diversity, many construction projects have put forward tensile resistance requirements for friction pendulum bearings. The friction pendulum bearings in the existing technology cannot effectively resist the tensile force while achieving seismic isolation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tensile friction pendulum bearing that can resist tension while achieving the function of shock absorption and isolation, thereby better protecting the structural system.

[0005] The solution adopted by the present invention to solve the technical problem is:

[0006] A tensile friction pendulum support comprises an upper seat plate, a middle seat plate, a spherical crown lining plate and a lower seat plate which are sequentially arranged and slidably fitted from top to bottom;

[0007] It also includes a pull bolt that is coaxial with the middle seat plate and the spherical crown lining plate and is connected to the middle seat plate or the spherical crown lining plate;

[0008] When the pull bolt is connected to the spherical crown lining plate, the pull bolt passes through the middle seat plate and is connected to the spherical crown lining plate and forms a sliding friction pair with the middle seat plate;

[0009] When the pull bolt is connected to the middle seat plate, the pull bolt passes through the spherical crown lining plate and is connected to the middle seat plate and forms a sliding friction pair four with the middle seat plate.

[0010] In the present invention, friction energy dissipation is effectively achieved through the sliding friction between the upper seat plate and the middle seat plate, and the sliding friction between the lower seat plate and the spherical crown lining plate; and the tensile strength of the present invention is effectively achieved through the pull bolts.

[0011] In some possible implementations, in order to effectively achieve the connection between the pull bolt and the middle seat plate or the ball crown lining plate, and effectively ensure the rotation of the present invention;

[0012] The pull bolt comprises a bolt cap, a connecting rod connected to the bolt cap and coaxial with the middle seat plate and the spherical crown lining plate; the connecting rod is arranged vertically.

[0013] In some possible embodiments, in order to effectively connect the pull bolt to the spherical cap lining and ensure the rotation of the present invention, when the pull bolt is connected to the spherical cap lining, the middle base plate is provided with a bolt cap mounting groove with a spherical bottom and a through hole for the connecting rod to pass through and connected to the bolt cap mounting groove on one side of the middle base plate close to the upper base plate.

[0014] The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair four.

[0015] In some possible implementations, in order to effectively achieve the connection between the pull bolt and the middle seat plate; and to ensure the rotation of the present invention;

[0016] When the pull bolt is connected to the middle seat plate, the side of the spherical crown lining plate away from the middle seat plate is provided with a bolt cap mounting groove with a spherical bottom and a through hole for the connecting rod to pass through and connected to the bolt cap mounting groove;

[0017] The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair four.

[0018] In some possible implementations, in order to cooperate with the pull bolt to further realize the tensile function of the present invention, and simultaneously realize Y-direction displacement separation, X-direction seismic isolation separation, and Y-direction seismic isolation separation;

[0019] It also includes an X-direction tensile guide structure provided on the upper seat plate and slidingly matched with the middle seat plate, and a Y-direction tensile guide structure installed on the lower seat plate and orthogonal to the X-direction tensile guide structure; the Y-direction tensile guide structure is slidingly matched with the spherical crown lining plate.

[0020] In some possible implementations, in order to effectively achieve displacement and tensile constraint of the center seat plate and the spherical cap lining plate along the X direction;

[0021] The X-direction tensile guide structure includes an upper side baffle provided at the bottom of the upper seat plate, an upper tensile block installed at the bottom of the upper side baffle and forming a U-shaped guide groove 1 on the side of the upper seat plate close to the middle seat plate, and an X-direction protrusion installed in the U-shaped guide groove 1 and connected to the outer side of the middle seat plate;

[0022] A sliding friction pair five is formed between the X-direction protrusion and the upper side baffle, and a sliding friction pair six is formed between the X-direction protrusion and the upper tensile block.

[0023] In some possible implementations, in order to effectively prevent the X-direction projection from exceeding the displacement limit, it plays the role of preventing the beam from falling;

[0024] The X-direction tensile guide structure further includes upper limit stops arranged at both ends of the U-shaped guide groove.

[0025] In some possible implementations, in order to effectively achieve the displacement and tensile constraint of the spherical cap lining plate and the middle seat plate along the Y direction;

[0026] The Y-direction tensile guide structure includes a lower side baffle provided on the lower seat plate and orthogonal to the upper side baffle in the horizontal direction, a lower tensile stopper installed on the lower side baffle and forming a second U-shaped guide groove on the side of the lower seat plate close to the middle seat plate, and a Y-direction protrusion installed in the second U-shaped guide groove and connected to the outer side of the spherical cap lining plate;

[0027] A sliding friction pair 7 is formed between the Y-direction protrusion and the lower side baffle, and a sliding friction pair 8 is formed between the X-direction protrusion and the upper tensile block.

[0028] In some possible implementations, in order to effectively prevent the Y-direction projection from exceeding the displacement limit, it plays a role in preventing the beam from falling;

[0029] The Y-direction tensile guide structure further includes lower limit blocks arranged at both ends of the U-shaped guide groove.

[0030] In some possible implementations, in order to effectively achieve vertical displacement constraint and realize the rotation of the present invention;

[0031] A sliding friction pair 1 is formed between the upper seat plate and the middle seat plate, a sliding friction pair 2 is formed between the middle seat plate and the spherical crown lining plate, and a sliding friction pair 3 is formed between the spherical crown lining plate and the lower seat plate; the sliding surfaces of the sliding friction pair 1 and the sliding friction pair 3 are two mutually orthogonal cylindrical surfaces; the sliding surface of the sliding friction pair 2 is a spherical surface.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention can realize the tensile function by cooperating with the pull bolt, the X-direction tensile guide structure, and the Y-direction tensile guide structure. The force is clear, the rotation amount is large, and the overall structure is relatively compact.

[0034] In the present invention, friction energy consumption can be effectively achieved through the cooperation between the sliding friction pair 1 and the sliding friction pair 3;

[0035] The present invention realizes the separation of lateral and longitudinal displacement, lateral seismic isolation and longitudinal seismic isolation by arranging the coordination of X-direction tensile guide structure and Y-direction tensile guide structure, and is more suitable for bridges with different lateral and longitudinal stiffness requirements.

[0036] The present invention effectively prevents the X-direction convex and Y-direction convex displacement from exceeding the limit by setting the upper limit stopper and the lower limit stopper, which can play the role of preventing the beam from falling;

[0037] The invention has a simple structure and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the front view structural relationship of the present invention;

[0039] Figure 2 It is a schematic diagram of the side structural relationship of the present invention;

[0040] Figure 3 Schematic diagram of the structure of the upper tensile block in the present invention;

[0041] Figure 4 Schematic diagram of the structure of the lower tensile block in the present invention;

[0042] Figure 5 It is a schematic diagram of the axial side of the present invention;

[0043] Figure 6 It is a front view structural schematic diagram of the bolt cap and the spherical crown lining plate in the present invention when they are in sliding cooperation;

[0044] Figure 7 It is a side view of the structure of the bolt cap and the spherical crown lining plate when they are slidingly matched in the present invention;

[0045] Among them: 1. Upper seat plate; 2. Top plate; 3. Upper curved slide plate; 4. Middle seat plate; 5. Pull bolt; 6. Inner slide plate; 7. Middle slide plate; 8. Ball crown lining plate; 9. Lower curved slide plate; 10. Bottom plate; 11. Lower seat plate; 12. Upper tensile block; 13. Lower tensile block; 14. Upper vertical plate; 15. Upper flat plate; 16. Upper vertical slide bar; 17. Upper flat slide bar; 18. Lower vertical plate; 19. Lower flat plate; 20. Lower vertical slide bar; 21. Lower flat slide bar; 22. Sliding friction pair one; 23. Sliding friction pair two; 24. Sliding friction pair three; 25. Sliding friction pair four; 26. Sliding friction pair five; 27. Sliding friction pair six; 28. Sliding friction pair seven; 29. Sliding friction pair eight. DETAILED DESCRIPTION

[0046] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediary; they can refer to internal communication between two components or interactions between two components. The terms "first," "second," and similar terms mentioned in this application do not denote any order, quantity, or importance; they are simply used to distinguish between different components. Similarly, terms such as "one" or "a" do not indicate a quantitative limitation; rather, they indicate the presence of at least one. In the implementation of this application, "and / or" describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality" refers to two or more positioning posts. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] The present invention is described in detail below.

[0048] like Figure 1-Figure 7 As shown:

[0049] A tensile friction pendulum bearing comprises an upper seat plate 1, a middle seat plate 4, a spherical cap lining plate 8, and a lower seat plate 11, which are sequentially arranged and slidably engaged with each other from top to bottom; the upper seat plate 1 and the middle seat plate 4 slide along the X direction, and the spherical cap lining plate 8 and the lower seat plate 11 slide along the Y direction;

[0050] It also includes a pull bolt 5 that is coaxial with the middle seat plate 4 and the spherical crown lining plate 8 and connected to the middle seat plate 4 or the spherical crown lining plate 8;

[0051] When the pull bolt 5 is connected to the spherical crown lining plate 8, the pull bolt 5 passes through the middle seat plate 4 and is connected to the spherical crown lining plate 8 and forms a sliding friction pair 25 with the middle seat plate 4;

[0052] When the pull bolt 5 is connected to the middle seat plate 4 , the pull bolt 5 passes through the spherical cap lining plate 8 and is connected to the middle seat plate 4 and forms a sliding friction pair 25 with the middle seat plate 4 .

[0053] In the present invention, friction energy dissipation is effectively achieved through the sliding friction between the upper seat plate 1 and the middle seat plate 4, and the sliding friction between the lower seat plate 11 and the spherical crown lining plate 8; the pull bolt 5 effectively achieves the tensile function to avoid vertical upward displacement;

[0054] In some possible implementations, in order to effectively achieve the connection between the pull bolt 5 and the middle seat plate 4 or the spherical crown lining plate 8, and effectively ensure the rotation of the present invention;

[0055] The pull bolt 5 includes a bolt cap, a connecting rod connected to the bolt cap and coaxial with the middle seat plate 4 and the spherical crown lining plate 8; the connecting rod is arranged in a vertical direction.

[0056] The bolt cap is used to achieve sliding cooperation with the middle seat plate 4 or the spherical crown lining plate 8, and the connecting rod is used to achieve relative fixation of the middle seat plate 4 and the spherical crown lining plate 8 in the vertical direction;

[0057] In some possible implementations, in order to effectively achieve the connection between the pull bolt 5 and the ball crown lining plate 8; and to ensure the rotation of the present invention;

[0058] like Figure 1 、 Figure 2 、 Figure 5 As shown; when the pull bolt 5 is connected to the spherical crown lining 8, the middle base plate 4 is provided with a bolt cap mounting groove with a spherical bottom and a through hole for the connecting rod to pass through and communicate with the bolt cap mounting groove on one side close to the upper base plate 1;

[0059] The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair 25.

[0060] Preferably, the bottom of the bolt cap installation groove, the spherical surface of the bolt cap, and the curvature center of the spherical cap lining plate 8 close to the upper seat plate 1 coincide with each other. This arrangement will facilitate rotation.

[0061] In some possible implementations, in order to effectively connect the pull bolt 5 with the middle seat plate 4 and ensure rotation;

[0062] like Figure 6 、 Figure 7 As shown; when the pull bolt 5 is connected to the middle seat plate 4, the side of the spherical cap liner 8 away from the middle seat plate 4 is provided with a bolt cap mounting groove with a spherical bottom, and a through hole for the connecting rod to pass through and communicate with the bolt cap mounting groove;

[0063] The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair 25.

[0064] Specifically, the spherical surface coincides with the center of curvature of the upper surface of the spherical cap liner 8, thereby facilitating the rotation of the support;

[0065] Furthermore, the size of the bolt cap installation groove is larger than the size of the bolt cap, and the two are clearance-matched; the diameter of the through hole is larger than the diameter of the connecting rod.

[0066] In some possible implementations, in order to cooperate with the pull bolt 5 to further realize the tensile function of the present invention, and simultaneously realize the Y-direction displacement separation, the X-direction vibration isolation separation, and the Y-direction vibration isolation separation;

[0067] like Figure 5As shown, it also includes an X-direction tensile guide structure provided on the upper seat plate 1 and slidingly engaged with the middle seat plate 4, and a Y-direction tensile guide structure installed on the lower seat plate 11 and orthogonal to the X-direction tensile guide structure; the Y-direction tensile guide structure is slidingly engaged with the spherical crown lining plate 8.

[0068] In some possible implementations, in order to effectively achieve displacement and tensile constraint of the center seat plate 4 and the spherical cap lining plate 8 along the X direction;

[0069] like Figure 3 As shown, the X-direction tensile guide structure includes an upper side baffle provided at the bottom of the upper seat plate 1 and arranged along the X-direction, an upper tensile stopper 12 installed at the bottom of the upper side baffle and forming a U-shaped guide groove 1 on the side of the upper seat plate 1 close to the middle seat plate 4, and an X-direction protrusion installed in the U-shaped guide groove 1 and connected to the outer side of the middle seat plate 4; the upper tensile stopper 12 is provided along the X-direction;

[0070] A sliding friction pair 5 26 is formed between the X-direction protrusion and the upper side baffle, and a sliding friction pair 6 27 is formed between the X-direction protrusion and the upper tensile block 12 .

[0071] In some possible implementations, in order to effectively prevent the X-direction projection from exceeding the displacement limit, it plays the role of preventing the beam from falling;

[0072] The X-direction tensile guide structure further includes upper limit stops arranged at both ends of the U-shaped guide groove.

[0073] In some possible implementations, in order to effectively achieve the displacement and tensile constraint of the center seat plate 4 and the spherical cap lining plate 8 along the Y direction;

[0074] like Figure 4 As shown, the Y-direction tensile guide structure includes a lower side baffle provided on the lower seat plate 11 and orthogonal to the upper side baffle in the horizontal direction, a lower tensile stopper 13 installed on the lower side baffle and forming a U-shaped guide groove 2 on the side of the lower seat plate 11 close to the middle seat plate 4, and a Y-direction protrusion installed in the U-shaped guide groove 2 and connected to the outer side of the spherical crown lining plate 8; the lower side baffle is arranged along the Y direction, and the lower tensile stopper 13 is arranged in the same Y-direction direction as the lower side baffle;

[0075] A sliding friction pair 7 28 is formed between the Y-direction protrusion and the lower side baffle, and a sliding friction pair 8 29 is formed between the X-direction protrusion and the upper tensile block 12.

[0076] In some possible implementations, in order to effectively prevent the Y-direction projection from exceeding the displacement limit, it plays a role in preventing the beam from falling;

[0077] The Y-direction tensile guide structure further includes lower limit blocks arranged at both ends of the U-shaped guide groove.

[0078] Preferably, Figure 5 As shown, there are two groups of X-direction tensile guide structures and two groups of Y-direction tensile guide structures.

[0079] In some possible implementations, in order to effectively achieve vertical displacement constraint and realize the rotation of the present invention;

[0080] like Figure 5 As shown, a sliding friction pair 1 22 is formed between the upper seat plate 1 and the middle seat plate 4, a sliding friction pair 23 is formed between the middle seat plate 4 and the spherical crown lining plate 8, and a sliding friction pair 3 24 is formed between the spherical crown lining plate 8 and the lower seat plate 11; the sliding surfaces of the sliding friction pair 1 22 and the sliding friction pair 3 24 are two mutually orthogonal cylindrical surfaces, wherein the axis of the sliding surface of the sliding friction pair 1 22 is arranged along the X direction, and the axis of the sliding surface of the sliding friction pair 3 24 is arranged along the Y direction; the sliding surface of the sliding friction pair 23 is a spherical surface.

[0081] Specifically, the long direction of the U-shaped guide groove 1 is arranged along the X direction, the long direction of the U-shaped guide groove 2 is arranged along the Y direction, the sliding surfaces of the sliding friction pair 1 22 and the sliding friction pair 3 24 are cylindrical, and the axes of the two sliding surfaces are orthogonal in the horizontal plane; the axis of the sliding surface of the sliding friction pair 1 22 is arranged along the X direction, and the sliding surface of the sliding friction pair 2 23 is arranged along the Y direction;

[0082] Among them, the long direction of the U-shaped guide groove 1 is arc-shaped and arranged along the X direction, and its curvature radius is consistent with the curvature radius of the sliding surface of the sliding friction pair 1 22; the long direction of the U-shaped guide groove 2 is arc-shaped and arranged along the Y direction, and its curvature radius is consistent with the curvature radius of the sliding surface of the sliding friction pair 2 23;

[0083] like Figure 1-Figure 7 As shown, the opening of the U-shaped guide groove 1 is set on the side close to the middle seat plate 4, and the X-direction protrusion connected to the outer side of the middle seat plate 4 will slide with the U-shaped guide groove 1, on the one hand, realizing the displacement of the support along the X direction, on the other hand, because the U-shaped guide groove 1 is formed by the bottom of the upper seat plate 1, the side of the upper side baffle close to the middle seat plate 4, and the side of the upper tensile baffle close to the upper seat plate 1, the upper tensile block 12 will be restricted by the upper seat plate 1 to constrain its displacement in the vertical upward direction, thereby realizing tensile strength;

[0084] The working principle of the U-shaped guide groove 2 is the same as that of the U-shaped guide groove 1. It mainly realizes the displacement of the support along the Y direction, while constraining its vertical upward displacement to achieve tensile resistance; the X-direction displacement and Y-direction displacement, X-direction seismic isolation and Y-direction seismic isolation are separated through the X-direction tensile guide structure and the Y-direction tensile guide structure.

[0085] The vertical load transfer sequence in the present invention is: upper seat plate 1 - top plate 2 - upper curved slide plate 3 - middle seat plate 4 - spherical crown lining plate 8 - lower curved slide plate 9 - bottom plate 10 - lower seat plate 11;

[0086] The tensile transmission sequence of the present invention is: upper support plate - upper tensile stopper 12 - middle seat plate 4 - middle slide plate 7 - tension bolt 5 - spherical crown lining plate 8 - lower tensile stopper 13 - lower seat plate 11.

[0087] Specifically,

[0088] A top plate 2 is provided on one side of the upper seat plate 1 close to the middle seat plate 4, and an upper curved slide plate 3 is provided on the middle seat plate 4 to form a sliding friction pair 22 with the top plate 2;

[0089] When a sliding friction pair 4 25 is formed between the lower seat plate 11 and the bolt cap of the pull bolt 5, an inner slide 6 is provided in the bolt cap mounting groove provided at the bottom of the lower seat plate 11, and a sliding friction pair 4 25 is formed between the inner slide 6 and the bolt cap.

[0090] An intermediate slide plate 7 is provided on the side of the middle seat plate 4 close to the spherical crown lining plate 8, and a sliding friction pair 23 is formed by the intermediate slide plate 7 and the top of the spherical crown lining plate 8;

[0091] A bottom plate 10 is provided on the lower seat plate 11, and a lower curved slide plate 9 is provided on the side of the spherical cap lining plate 8 close to the lower seat plate 11, which is slidably matched with the bottom plate 10; the cooperation between the two forms a sliding friction pair 24;

[0092] When a sliding friction pair 4 25 is formed between the middle base plate 4 and the bolt cap of the pull bolt 5, an inner slide 6 is provided on the side of the bolt cap close to the middle base plate 4. The inner slide 6 forms a sliding friction pair 4 25 with the bottom of the bolt cap mounting groove on the middle base plate 4.

[0093] like Figure 1-Figure 4 As shown, an upper vertical plate 14 is provided on the side of the upper side baffle close to the middle seat plate 4, and an upper vertical slide 16 is provided on the outer side of the X-direction protrusion to slide with the upper vertical plate 14, and the two cooperate to form a sliding friction pair 5 26;

[0094] An upper flat plate 15 is provided on the side of the upper tensile stop 12 close to the upper seat plate 1, and an upper flat slide 17 is provided on the side of the X-direction protrusion close to the upper tensile stop 12; the two cooperate to form a sliding friction pair 6 27;

[0095] A lower vertical plate 18 is provided on the side of the lower plate stopper close to the spherical cap lining 8, and a lower vertical slide 20 is provided on the outer side of the Y-direction protrusion to slide with the lower vertical plate 18; the two cooperate to form a sliding friction pair 28;

[0096] A lower flat plate 19 is provided on the side of the lower tensile stop 13 close to the lower seat plate 11, and a lower flat slide 21 is provided on the side of the Y-direction protrusion close to the lower tensile stop 13; the two cooperate to form a sliding friction pair 8 29;

[0097] Preferably, the upper curved slide 3, the inner slide 6, the middle slide 7, the lower curved slide 9, the upper vertical slide 16, the upper horizontal slide 17, the lower vertical slide 20, and the lower horizontal slide 21 can all be made of polymer materials, wear-resistant alloy materials, and composite wear-resistant materials; the polymer material can be polytetrafluoroethylene, modified polytetrafluoroethylene, ultra-high molecular weight polyethylene, ultra-high performance polytetrafluoroethylene, etc.; wear-resistant alloys such as copper alloys; composite wear-resistant materials such as SF-1B.

[0098] Preferably, the top plate 2, the bottom plate 10, the upper vertical plate 14, the upper horizontal plate 15, the lower vertical plate 18, and the lower horizontal plate 19 are all made of stainless steel plates.

[0099] Among them, the sliding friction pair 4 25, the sliding friction pair 6 27, and the sliding friction pair 8 29 cooperate with each other to achieve tensile constraint. The tensile constraint described here is the displacement moving vertically away from the top of the upper seat plate 1.

[0100] The sliding friction pair 1 22 and the sliding friction pair 3 24 cooperate with each other to constrain its vertical downward movement displacement, that is, to resist pressure; when in use, the sliding friction pair 1 22 constrains the vertical displacement and releases the displacement in the X and Y directions, and the sliding friction pair 5 26 constrains the Y displacement and releases the vertical and X displacements, thereby achieving sliding along the first long direction of the U-shaped guide groove, that is, the X direction; the sliding friction pair 3 24 constrains the vertical displacement and releases the displacement in the X and Y directions, and the sliding friction pair 7 28 constrains the Y displacement and releases the vertical and Y displacements, thereby achieving sliding along the second long direction of the U-shaped guide groove, that is, the Y direction, thereby separating the displacement in the X and Y directions.

[0101] The second sliding friction pair 23 is mainly used to realize the vertical rotation of the present invention. Furthermore, the center of the curved surface at the fourth sliding friction pair 25 coincides with the center of the curved surface at the second sliding friction pair 23, ensuring smooth rotation.

[0102] In the present invention, the X-direction displacement can be in the longitudinal bridge direction or the transverse bridge direction. When the X-direction is in the longitudinal bridge direction, the Y-direction is in the transverse bridge direction; when the Y-direction is in the longitudinal bridge direction, the X-direction is in the transverse bridge direction; the two always remain orthogonal in the horizontal plane.

[0103] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A tensile friction pendulum support, comprising an upper seat plate, a middle seat plate, a spherical cap lining plate, and a lower seat plate, which are sequentially arranged and slidably fitted from top to bottom; characterized in that: The system further includes a pull bolt coaxial with the middle seat plate and the spherical crown lining plate and connected to the middle seat plate or the spherical crown lining plate, an X-direction tensile guide structure provided on the upper seat plate and slidably engaged with the middle seat plate, and a Y-direction tensile guide structure provided on the lower seat plate and orthogonal to the X-direction tensile guide structure; the Y-direction tensile guide structure slidably engaged with the spherical crown lining plate; When the pull bolt is connected to the spherical crown lining plate, the pull bolt passes through the middle seat plate and is connected to the spherical crown lining plate and forms a sliding friction pair with the middle seat plate; When the pull bolt is connected to the middle seat plate, the pull bolt passes through the spherical cap lining plate and is connected to the middle seat plate, forming a sliding friction pair with the middle seat plate; the pull bolt includes a bolt cap, a connecting rod connected to the bolt cap and coaxial with the middle seat plate and the spherical cap lining plate; the connecting rod is arranged vertically; The X-direction tensile guide structure includes an upper side baffle provided at the bottom of the upper seat plate, an upper tensile block installed at the bottom of the upper side baffle and forming a U-shaped guide groove 1 on the side of the upper seat plate close to the middle seat plate, and an X-direction protrusion installed in the U-shaped guide groove 1 and connected to the outer side of the middle seat plate; A sliding friction pair 5 is formed between the X-direction protrusion and the upper side baffle, and a sliding friction pair 6 is formed between the X-direction protrusion and the upper tensile block; The Y-direction tensile guide structure includes a lower side baffle provided on the lower seat plate and orthogonal to the upper side baffle in the horizontal direction, a lower tensile stopper installed on the lower side baffle and forming a U-shaped guide groove 2 on the side of the lower seat plate close to the middle seat plate, and a Y-direction protrusion installed in the U-shaped guide groove 2 and connected to the outer side of the spherical cap lining plate; a sliding friction pair 7 is formed between the Y-direction protrusion and the lower side baffle, and a sliding friction pair 8 is formed between the X-direction protrusion and the upper tensile stopper; A sliding friction pair 1 is formed between the upper seat plate and the middle seat plate, a sliding friction pair 2 is formed between the middle seat plate and the spherical crown lining plate, and a sliding friction pair 3 is formed between the spherical crown lining plate and the lower seat plate; the sliding surfaces of the sliding friction pair 1 and the sliding friction pair 3 are two mutually orthogonal cylindrical surfaces; the sliding surface of the sliding friction pair 2 is a spherical surface.

2. The tensile friction pendulum bearing according to claim 1, characterized in that: When the pull bolt is connected to the spherical crown lining, the middle base plate is provided with a bolt cap mounting groove with a spherical bottom and a through hole for the connecting rod to pass through and communicate with the bolt cap mounting groove on one side of the middle base plate close to the upper base plate; The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair four.

3. The tensile friction pendulum bearing according to claim 1, characterized in that: When the pull bolt is connected to the middle seat plate, the side of the spherical crown lining plate away from the middle seat plate is provided with a bolt cap mounting groove with a spherical bottom and a through hole for the connecting rod to pass through and connected to the bolt cap mounting groove; The bolt cap is provided with a spherical surface adapted to the bottom of the bolt cap installation groove, and the two cooperate with each other to form a sliding friction pair four.

4. The tensile friction pendulum bearing according to claim 1, characterized in that: The X-direction tensile guide structure further includes upper limit stops arranged at both ends of the U-shaped guide groove.

5. The tensile friction pendulum bearing according to claim 1, characterized in that: The Y-direction tensile guide structure further includes lower limit blocks arranged at both ends of the U-shaped guide groove.

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