Tensile friction pendulum support of shaft body type swivel structure

Abstract

The invention relates to the technical field of building shock insulation, in particular to a tensile friction pendulum support of a shaft body type swivel structure, which comprises an upper support plate and a lower support plate which are symmetrically arranged up and down, and a sliding block arranged between the upper support plate and the lower support plate in a sliding manner, the upper mounting groove is formed in the lower end of the upper support plate; the upper rotating seat is rotationally arranged in the upper mounting groove; the upper sliding groove is formed in the lower end of the upper rotating seat; the lower mounting groove is formed in the upper end of the lower support plate; the shaft hole is formed in the center of the sliding block; the middle shaft is arranged in the shaft hole; the upper installation groove and the lower installation groove are both of a necking-down type circular groove structure, and the upper sliding groove and the lower sliding groove are both of a necking-down type long groove structure. By means of the design, the tensile property can be greatly improved, and it is guaranteed that the friction pendulum support can provide a stable shock insulation effect.

Description

Technical Field

[0001] The invention relates to the technical field of building seismic isolation, and in particular to a tensile friction pendulum support of an axial swivel structure. Background Art

[0002] Earthquakes are vibrations caused by the rapid release of energy from the earth's crust. The casualties and economic losses caused by earthquakes are mostly due to the collapse of buildings. Therefore, countries around the world are committed to doing a good job in earthquake resistance and disaster reduction in construction projects and improving the earthquake resistance and shock absorption capabilities of construction projects.

[0003] The basic principle of the friction pendulum bearing is to use the principle of a simple pendulum to extend the natural vibration period of the structure, use the spherical contact friction sliding to consume energy, reduce the lateral force and horizontal vibration transmitted to the structure, and protect the building structure from damage during an earthquake.

[0004] During rare earthquake calculations, building structures will generate overturning moments and twist, causing some seismic isolation bearings to enter a tension state. Under the action of the upper and lower tensile forces generated, the various structural components of the friction pendulum bearings will separate and cannot remain in the correct position, resulting in the loss of seismic isolation function. Summary of the invention

[0005] In order to solve the technical problem of poor tensile performance of friction pendulum bearings, the present invention provides a tensile friction pendulum bearing with an axial swivel structure, which greatly improves the tensile performance and ensures that the friction pendulum bearing can provide a stable seismic isolation effect.

[0006] The technical solution adopted by the present invention is to provide a tensile friction pendulum support of an axial swivel structure, comprising an upper support plate and a lower support plate symmetrically arranged up and down, a sliding block slidably arranged between the upper support plate and the lower support plate, and also comprising an upper mounting groove arranged at the lower end of the upper support plate, an upper rotating seat rotatably arranged in the upper mounting groove, an upper sliding groove arranged at the lower end of the upper rotating seat, a lower mounting groove arranged at the upper end of the lower support plate, a lower rotating seat rotatably arranged in the lower mounting groove, a lower sliding groove arranged at the upper end of the lower rotating seat, an axial hole arranged at the center of the sliding block, and a central axis arranged in the axial hole; The upper mounting groove and the lower mounting groove are both round groove structures with reduced openings. The upper end of the upper rotating seat is adapted to and embedded in the upper mounting groove, and the lower end of the lower rotating seat is adapted to and embedded in the lower mounting groove. The upper slide groove and the lower slide groove are both long groove structures with reduced openings. The upper end of the middle axis is adapted to and embedded in the upper slide groove, and the lower end of the middle axis is adapted to and embedded in the lower slide groove.

[0007] The cross sections of the upper mounting groove and the lower mounting groove are both T-shaped and symmetrical.

[0008] The cross sections of the upper slide groove and the lower slide groove are both T-shaped and symmetrical, and the central axis is a columnar structure with an I-shaped cross section.

[0009] The bottoms of the upper mounting groove and the lower mounting groove are flat.

[0010] The upper and lower end surfaces of the sliding block are both convex spherical surfaces, the opposite end surfaces of the upper rotating seat and the lower rotating seat are both concave spherical surfaces, and the upper sliding groove and the lower sliding groove are arc-shaped long groove structures.

[0011] The lower end surface of the upper rotating seat is provided with an upper limit stop ring protruding downward, and the upper end surface of the lower rotating seat is provided with a lower limit stop ring protruding upward. The upper and lower ends of the sliding block are respectively located inside the upper limit stop ring and the lower limit stop ring.

[0012] Sliding bodies are arranged between the upper support plate and the upper rotating seat, between the lower support plate and the lower rotating seat, between the upper rotating seat and the sliding block, and between the lower rotating seat and the sliding block.

[0013] The beneficial effects of the present invention are: 1. Both the upper mounting groove and the lower mounting groove adopt a constricted circular groove structure. The upper rotating seat realizes a rotatable and axially limited connection with the upper support plate by means of the upper mounting groove. The lower rotating seat realizes a rotatable and axially limited connection with the lower support plate by means of the lower mounting groove. The axial limit is performed without hindering the rotation to achieve a tensile effect. When lateral forces at different angles appear, the upper rotating seat and the lower rotating seat can rotate in universal directions.

[0014] 2. A slidable sliding block is set between the upper rotating seat and the lower rotating seat to meet the function of seismic isolation displacement. An upper slide groove and a lower slide groove are respectively added to the relative end faces of the upper rotating seat and the lower rotating seat. The upper slide groove and the lower slide groove adopt a long groove structure with a reduced mouth. A central axis is added to the sliding block. The upper and lower ends of the central axis are respectively embedded in the upper slide groove and the lower slide groove. The central axis can slide and rotate in the upper slide groove and the lower slide groove, but the axial limit is used to prevent the central axis from detaching from the upper slide groove and the lower slide groove.

[0015] 3. While achieving the anti-tensile effect, this design can also enable the upper rotating seat and the lower rotating seat to rotate when lateral forces of different angles appear, and adjust the directions of the upper slide groove and the lower slide groove according to the direction of the force to achieve self-adaptation, so that the upper support plate and the lower support plate of the friction pendulum support are not restricted by the upper slide groove and the lower slide groove, thereby achieving universal lateral movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention Figure 2 It is a structural schematic diagram of the upper rotating seat; Figure 3 It is a schematic diagram of the structure of the upper rotating seat in another direction; Figure 4 It is a structural schematic diagram of the horizontal limit displacement state of the upper bearing plate and the lower bearing plate; Figure 5 It is a top view of the present invention.

[0017] In the accompanying drawings, 1 is an upper support plate, 2 is a lower support plate, 3 is a sliding block, 4 is an upper mounting groove, 5 is an upper rotating seat, 6 is an upper slide groove, 7 is a lower mounting groove, 8 is a lower rotating seat, 9 is a lower slide groove, 10 is a central axis, 11 is an upper limit stop ring, 12 is a lower limit stop ring, 13 is a connecting plate, and 14 is a connecting bolt. DETAILED DESCRIPTION

[0018] like Figure 1-5 As shown, the present invention provides a tensile friction pendulum support of an axial swivel structure, comprising an upper support plate 1 and a lower support plate 2 symmetrically arranged in an upper and lower manner, a sliding block 3 slidably arranged between the upper support plate 1 and the lower support plate 2, and also comprising an upper mounting groove 4 arranged at the lower end of the upper support plate 1, an upper rotating seat 5 rotatably arranged in the upper mounting groove 4, an upper sliding groove 6 arranged at the lower end of the upper rotating seat 5, a lower mounting groove 7 arranged at the upper end of the lower support plate 2, a lower rotating seat 8 rotatably arranged in the lower mounting groove 7, a lower sliding groove 9 arranged at the upper end of the lower rotating seat 8, and a An axial hole arranged at the center of the sliding block 3 and a central axis 10 arranged in the axial hole; the upper mounting groove 4 and the lower mounting groove 7 are both of a round groove structure with a contracted mouth type, the upper end of the upper rotating seat 5 is adapted to and embedded in the upper mounting groove 4, the lower end of the lower rotating seat 8 is adapted to and embedded in the lower mounting groove 7, the upper slide groove 6 and the lower slide groove 9 are both of a long groove structure with a contracted mouth type, the upper end of the central axis 10 is adapted to and embedded in the upper slide groove 6, and the lower end of the central axis 10 is adapted to and embedded in the lower slide groove 9.

[0019] In the present design, the upper support plate 1 and the lower support plate 2 are both of the same circular structure and are symmetrical up and down, the upper mounting groove 4 and the lower mounting groove 7 are both of the same circular groove structure and correspond up and down, the upper rotating seat 5 and the lower rotating seat 8 are both of the same circular structure and are symmetrical up and down, the upper slide groove 6 and the lower slide groove 9 are both of the same long groove structure and are symmetrical up and down, the central axis 10 is a cylindrical structure and has an I-shaped cross-section. The present design adopts a structure that is symmetrical up and down, which can facilitate production and assembly and reduce costs.

[0020] The upper support plate 1 and the lower support plate 2 are circular structures, and the upper mounting groove 4 and the lower mounting groove 7 are shrinking circular groove structures. The upper end of the upper rotating seat 5 is adapted to the upper mounting groove 4. After the upper end of the upper rotating seat 5 is embedded and installed in the upper mounting groove 4, a rotatable and axially limited connection is realized, so that the upper mounting seat 5 and the upper support plate 1 will not separate after being subjected to upper and lower pulling forces, and the lower end of the lower rotating seat 8 is adapted to the lower mounting groove 7, and the lower end of the lower rotating seat 8 is embedded in the lower mounting groove 7, so that a rotatable and axially limited connection is realized, so that the lower rotating seat 8 and the lower support plate 2 will not separate after being subjected to upper and lower pulling forces. An axial hole and a middle axis 10 are added at the center position of the sliding block 3, and the middle axis 10 is inserted into the axial hole without a fixed connection, and an upper slide groove 6 is added on the friction surface of the upper rotating seat 5 and the sliding block 3, and a lower slide groove 9 is added on the friction surface of the lower rotating seat 8 and the sliding block 3. The upper slide groove 6 and the lower slide groove 9 both adopt a shrinking long groove structure, and the middle The upper and lower ends of the shaft 10 are respectively embedded in the upper slide groove 6 and the lower slide groove 9. Due to the shrinkage structure, the end of the middle shaft 10 adapted thereto can slide and rotate in the groove after being embedded, and axial limitation can be achieved. When subjected to upper and lower pulling forces, the middle shaft 10 will not separate from the groove. With the cooperation of the upper support plate 1, the upper rotating seat 5, the sliding block 3, the lower rotating seat 8 and the lower support plate 2, when the friction pendulum support is subjected to upper and lower pulling forces, the components will not separate, and the tensile performance is significantly improved. Moreover, the upper rotating seat 5 and the lower rotating seat 8 can adaptively rotate according to the force direction, so that the upper slide groove 6 and the lower slide groove 9 will not limit the sliding direction of the sliding block 3, thereby achieving the effect that the sliding block 3 can perform universal sliding. The upper slide groove 6 and the lower slide groove 9 cooperate with the middle shaft 10 not only to improve the tensile performance, but also to limit the sliding range of the sliding block 3, effectively avoiding the problem of misalignment caused by excessive sliding amplitude.

[0021] In this article, the term "narrowing" refers to the width of the slot being smaller than the width inside the slot, the term "axial limitation" refers to the inability to move in the up and down directions, the term "long slot" refers to a long strip of slot structure with closed ends, and the term "universal" refers to multiple directions in the horizontal direction.

[0022] In actual production, the upper support plate 1 is produced in the form of two semicircular structures separated from the center line. During installation, it is buckled on the upper rotating seat 5 and then fixed between the two semicircular upper support plates 1. The fixing method can be welding or other methods as required. The assembly method of the lower support plate 2 is the same as that of the upper support plate 1.

[0023] like Figure 1-3 As shown, the cross-sections of the upper mounting groove 4 and the lower mounting groove 7 are both T-shaped and symmetrical, and the cross-sections of the upper slide groove 6 and the lower slide groove 9 are both T-shaped and symmetrical. The central axis 10 is a columnar structure and has an I-shaped cross-section.

[0024] The shapes of the upper mounting groove 4, the lower mounting groove 7, the upper slide groove 6, the lower slide groove 9 and the middle axis 10 are defined, so that the fit is tighter and the production and assembly are more convenient.

[0025] like Figure 1 As shown, the bottoms of the upper mounting groove 4 and the lower mounting groove 7 are flat, which can facilitate processing and assembly, and production is more convenient.

[0026] like Figure 1 As shown, the upper and lower end surfaces of the sliding block 3 are both convex spherical surfaces, the relative end surfaces of the upper rotating seat 5 and the lower rotating seat 8 are both concave spherical surfaces, and the upper sliding groove 6 and the lower sliding groove 9 are arc-shaped long groove structures.

[0027] The convex spherical surface refers to the upper and lower end surfaces of the sliding block 3 that are convex upward and downward in a spherical shape respectively, and the concave spherical surface refers to the relative end surfaces of the upper rotating seat 5 and the lower rotating seat 8 that are spherical surfaces that are concave inward respectively. The use of this spherical contact friction sliding can consume energy more effectively and achieve better shock absorption and isolation effects. The upper sliding groove 6 and the lower sliding groove 9 have the same cross-sectional shape as the friction surface, and do not hinder or affect the sliding of the sliding block 3.

[0028] like Figure 1 As shown, the lower end surface of the upper rotating seat 5 is provided with an upper limit stop ring 11 protruding downward, and the upper end surface of the lower rotating seat 8 is provided with a lower limit stop ring 12 protruding upward, and the upper and lower ends of the sliding block 3 are respectively located on the inner sides of the upper limit stop ring 11 and the lower limit stop ring 12.

[0029] The upper limit stop ring 11 and the lower limit stop ring 12 can further limit the sliding range of the sliding block 3. Together with the upper slide groove 6 and the lower slide groove 9 to limit the sliding range of the center axis 10, the sliding range of the sliding block 3 can be doubly limited, which has higher strength and better limiting effect.

[0030] like Figure 1 As shown, sliding bodies are arranged between the upper support plate 1 and the upper rotating seat 5 , between the lower support plate 2 and the lower rotating seat 8 , between the upper rotating seat 5 and the sliding block 3 , and between the lower rotating seat 8 and the sliding block 3 .

[0031] The sliding body can make the sliding block 3 slide more smoothly. Different sliding bodies can be used to adjust the friction coefficient according to needs, which is more flexible to use and has a wider range of applications. The sliding body can be a ball, a roller or a skateboard.

[0032] like Figure 1 and Figure 5 As shown, connecting plates 13 with L-shaped cross sections are symmetrically arranged on the outer peripheries of the upper support plate 1 and the lower support plate 2, and the upper and lower corresponding connecting plates 13 are connected by connecting bolts 14. The connecting plates 13 can temporarily reinforce the friction pendulum support and play a positioning role during transportation and installation. After installation, the connecting plates 13 can be removed.

Claims

1. A tensile friction pendulum bearing of an axial swivel structure, comprising an upper bearing plate (1) and a lower bearing plate (2) symmetrically arranged up and down, and a sliding block (3) slidably arranged between the upper bearing plate (1) and the lower bearing plate (2), characterized in that: It also includes an upper mounting groove (4) arranged at the lower end of the upper support plate (1), an upper rotating seat (5) rotatably arranged in the upper mounting groove (4), an upper sliding groove (6) arranged at the lower end of the upper rotating seat (5), a lower mounting groove (7) arranged at the upper end of the lower support plate (2), a lower rotating seat (8) rotatably arranged in the lower mounting groove (7), a lower sliding groove (9) arranged at the upper end of the lower rotating seat (8), an axial hole arranged at the center of the sliding block (3), and a central axis (10) arranged in the axial hole; The upper mounting groove (4) and the lower mounting groove (7) are both of a constricted circular groove structure; the upper end of the upper rotating seat (5) is adapted to the upper mounting groove (4) and embedded in the upper mounting groove (4); the lower end of the lower rotating seat (8) is adapted to the lower mounting groove (7) and embedded in the lower mounting groove (7); the upper slide groove (6) and the lower slide groove (9) are both of a constricted long groove structure; the upper end of the middle axis (10) is adapted to the upper slide groove (6) and embedded in the upper slide groove (6); the lower end of the middle axis (10) is adapted to the lower slide groove (9) and embedded in the lower slide groove (9).

2. The tensile friction pendulum support of the shaft-type rotating structure according to claim 1, characterized in that: The cross-sections of the upper mounting groove (4) and the lower mounting groove (7) are both T-shaped and symmetrical.

3. The tensile friction pendulum support of the shaft-type rotating structure according to claim 1, characterized in that: The cross-sections of the upper slide groove (6) and the lower slide groove (9) are both T-shaped structures and are symmetrical up and down, and the central axis (10) is a columnar structure and has an I-shaped cross-section.

4. The tensile friction pendulum support of the shaft-type rotating structure according to claim 1, characterized in that: The bottoms of the upper mounting groove (4) and the lower mounting groove (7) are flat surfaces.

5. The tensile friction pendulum support of the shaft-type rotating structure according to claim 1, characterized in that: The upper and lower end surfaces of the sliding block (3) are both convex spherical surfaces, the opposite end surfaces of the upper rotating seat (5) and the lower rotating seat (8) are both concave spherical surfaces, and the upper sliding groove (6) and the lower sliding groove (9) are arc-shaped long groove structures.

6. The tensile friction pendulum support of the shaft-type rotating structure according to claim 1, characterized in that: The lower end surface of the upper rotating seat (5) is provided with an upper limit stop ring (11) protruding downwards, and the upper end surface of the lower rotating seat (8) is provided with a lower limit stop ring (12) protruding upwards. The upper end and the lower end of the sliding block (3) are respectively located inside the upper limit stop ring (11) and the lower limit stop ring (12).

7. The tensile friction swing support of the shaft-type rotating structure according to claim 1, characterized in that: Sliding bodies are provided between the upper support plate (1) and the upper rotating seat (5), between the lower support plate (2) and the lower rotating seat (8), between the upper rotating seat (5) and the sliding block (3), and between the lower rotating seat (8) and the sliding block (3).

Images