Variable stiffness high-rise skybridge support

Abstract

The application discloses a variable-rigidity high-altitude corridor support and relates to the technical field of earthquake resistance of high-altitude corridor supports. The technical scheme is as follows: the variable-rigidity high-altitude corridor support comprises an upper support plate, a first intermediate plate, a second intermediate plate and a lower support plate, and further comprises: a rotating displacement and buffering mechanism arranged on the upper support plate and the first intermediate plate; a moving displacement and buffering mechanism arranged on the first intermediate plate and the second intermediate plate; and a variable-rigidity seismic shear supporting structure arranged on the second intermediate plate and the lower support plate and used for supporting elastically with variable rigidity under seismic shear. The application has the beneficial effects that: through the arrangement of the rotating displacement and buffering mechanism, the moving displacement and buffering mechanism and the variable-rigidity seismic shear supporting structure, the position and displacement of the high-altitude corridor can be allowed to change slightly and be buffered and protected under the conditions of temperature stress, concrete shrinkage and creep and foundation settlement, and the variable-rigidity seismic shear supporting structure can be provided for the corridor.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology for high-altitude connecting corridor supports, and particularly to a high-altitude connecting corridor support with variable stiffness. Background Technology

[0002] Existing technology, patent CN 119616287 A, discloses a variable stiffness high-altitude corridor support, comprising: a first mounting steel plate, a second mounting steel plate, and a third mounting steel plate; a first seismic isolation support and a second seismic isolation support; locking members connected to the third mounting steel plate are provided at each of the four corners of the second mounting steel plate, and the locking members have shear grooves; both the first and second seismic isolation supports are used to dampen the high-altitude corridor support, thereby achieving variable stiffness control of the high-altitude corridor support. This invention constructs a multi-level variable stiffness seismic isolation support system. Based on the unique mechanical response mechanism of this multi-level seismic isolation system, when the seismic intensity shows an increasing trend, the interaction force between the high-altitude corridor and the towers on both sides shows a decreasing trend. This characteristic significantly improves the seismic toughness and stability of the overall structure in earthquake disasters, providing reliable protection for the safety performance of high-rise building structures in complex seismic environments.

[0003] When in use, this device can adjust the support of the seismic isolation bearing under the action of seismic shear force, thereby adjusting the stiffness of the bearing. This device only considers the impact of seismic shear force on the use of the bearing. However, in daily use, the bearing should also take into account the slight changes in displacement and position caused by temperature stress, concrete shrinkage and creep, and foundation settlement, and provide a certain buffer. Otherwise, if the position and displacement of the connecting corridor and the main structure are obstructed, it will cause a large additional stress to the connecting corridor, which will easily cause damage to the main structure of the connecting corridor and reduce its shear strength. Therefore, a variable stiffness high-altitude connecting corridor bearing is needed to meet the usage requirements. Summary of the Invention

[0004] In order to achieve the above-mentioned objectives and address the above-mentioned technical problems, the present invention provides a variable stiffness high-altitude connecting corridor support.

[0005] Its technical solution includes an upper support plate, a first intermediate plate, a second intermediate plate, and a lower support plate, and also includes:

[0006] Reinforcing ribs are provided in the upper support plate, the first intermediate plate, the second intermediate plate, and the lower support plate to enhance the strength of the upper support plate, the first intermediate plate, the second intermediate plate, and the lower support plate.

[0007] A rotation displacement and buffer mechanism is provided on the upper support plate and the first intermediate plate for rotation displacement and displacement buffering of the aerial corridor. The rotation displacement and buffer mechanism includes a rotating ring and an annular seat fixedly provided on the bottom of the upper support plate and the top of the first intermediate plate. The rotating ring is rotatably provided in the annular seat. An upper contact piece and a lower contact piece are fixedly provided on the bottom of the upper support plate and the top of the first intermediate plate, respectively. A rubber buffer seat is fixedly provided on the lower contact piece.

[0008] A movable displacement and shifting buffer mechanism is installed on the No. 1 intermediate plate and the No. 2 intermediate plate for minor horizontal movement and movement buffering of the aerial corridor. The movable displacement and shifting buffer mechanism includes an upper movable seat and a lower movable seat fixedly installed at the bottom of the No. 1 intermediate plate and the top of the No. 2 intermediate plate, respectively. The upper movable seat is slidably installed on the lower movable seat. A No. 1 support block is fixedly installed on the No. 2 intermediate plate. A rotating shaft is rotatably installed inside the No. 1 support block. An installation ring is fixedly sleeved on the rotating shaft. An energy-absorbing torsion spring is fixedly installed on the installation ring and the No. 1 support block.

[0009] A variable stiffness rigid support structure for seismic shear force is installed on the No. 2 intermediate plate and the lower support plate for elastic support with variable stiffness under seismic shear force. The variable stiffness rigid support structure for seismic shear force includes a main energy-absorbing spring and a main damper fixedly installed between the No. 2 intermediate plate and the lower support plate. An upper support seat and a lower rigid support seat are respectively fixedly installed at the bottom of the No. 2 intermediate plate and the top of the lower support plate.

[0010] Preferably, the rotation displacement and buffer mechanism further includes a slot formed in the annular seat, a smooth locking block is fixedly provided on the inner wall of the slot, a smooth contact block is fixedly provided on the outer wall of the rotating ring, and the smooth contact block is rotatably disposed in the slot.

[0011] Preferably, the annular seat has a ball movement groove, and a movable steel ball is movably disposed in the ball movement groove.

[0012] Preferably, the moving displacement and shifting buffer mechanism further includes a guide block fixedly disposed at the bottom of the upper moving seat, and a guide groove is provided at the top of the lower moving seat, with the guide block slidably disposed in the guide groove.

[0013] Preferably, a rack is fixedly provided at the bottom of the first intermediate plate, and a gear is fixedly sleeved on the rotating shaft, with the rack and the gear meshing together.

[0014] Preferably, a rotating rod is fixedly mounted on the mounting ring, a guide frame is fixedly mounted on the second intermediate plate, a movable frame is slidably mounted on the guide frame, a first transverse energy-absorbing spring is fixedly mounted on the guide frame and the movable frame, a movable pin is movably mounted inside the movable frame, and the tail end of the rotating rod is rotatably mounted on the movable pin.

[0015] Preferably, a guide sleeve is fixedly provided at the bottom of the movable frame, and the guide sleeve is slidably sleeved on the guide frame.

[0016] Preferably, a first transverse damper is horizontally disposed on the first intermediate plate and the second intermediate plate.

[0017] Preferably, a guide strip is fixedly installed on the lower support plate, a slider is slidably installed on the guide strip, a connecting rod is rotatably installed on the slider, a second support block is fixedly installed at the bottom of the second intermediate plate, the other end of the connecting rod is rotatably installed on the second support block, there is a set of sliders, and a second transverse energy-absorbing spring and a second transverse damper are fixedly installed between the sliders in the set.

[0018] Preferably, the guide strip has a groove, and a guide slider is fixedly provided at the bottom of the slider, and the guide slider is slidably disposed in the groove.

[0019] The beneficial effects of the technical solution provided by the embodiments of the present invention are as follows:

[0020] In this invention, by setting up a rotation displacement and buffer mechanism, when the position of the sky bridge changes, the rotating ring will rotate within the annular seat. The rotation of the rotating ring will drive the upper support plate to rotate, thereby adapting to the slight position changes of the sky bridge under various stresses, avoiding structural damage to the sky bridge. In addition, the contact resistance between the upper contact piece and the rubber buffer seat is relatively large, which can also play a certain role in rotational damping buffering when the position of the sky bridge changes.

[0021] In this invention, by setting up a displacement and shift buffer mechanism, when the aerial corridor experiences slight displacement, the upper moving seat will slide within the lower moving seat. The movement of the No. 1 intermediate plate will drive the energy-absorbing torsion spring to rotate and compress or stretch the No. 1 transverse energy-absorbing spring. Part of the stress causing the aerial corridor to shift will be converted into the torsion of the energy-absorbing torsion spring and the elastic potential energy of the No. 1 transverse energy-absorbing spring, thereby buffering the displacement of the aerial corridor and enabling the corridor to have the conditions for slight displacement, thus buffering the displacement and avoiding structural damage to the corridor.

[0022] In this invention, by setting up a variable rigid support structure for seismic shear force, when the aerial corridor is subjected to seismic shear force, the seismic shear force will be absorbed and converted into the elastic potential energy of the main energy-absorbing spring. Thus, under the action of seismic shear force, it can play an elastic support role for the corridor, allowing the corridor to undergo slight vertical displacement. When the shear force reaches a certain level, the upper rigid support seat descends and directly contacts the lower rigid support seat, and the variable elastic support becomes a rigid support, avoiding overload damage to the main energy-absorbing spring. On the other hand, it can improve the support strength and ensure the safety of the corridor. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the reinforcing ribs and rubber buffer seat in an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the ball movement groove and the movable ball in an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the energy-absorbing torsion spring, the first transverse energy-absorbing spring, and the rotating rod in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the guide block and guide groove in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the rigid support base, the second support block, and the connecting rod in an embodiment of the present invention.

[0029] The attached diagram is labeled as follows: 1. Upper support plate; 2. Intermediate plate No. 1; 3. Intermediate plate No. 2; 4. Lower support plate; 5. Reinforcing rib; 6. Rotation and displacement buffer mechanism; 61. Rotating ring; 62. Annular seat; 63. Slot; 64. Smooth locking block; 65. Smooth contact block; 66. Steel ball movable groove; 67. Movable steel ball; 68. Upper contact piece; 69. Rubber buffer seat; 610. Lower contact piece; 7. Movement and displacement buffer mechanism; 71. Upper moving seat; 72. Lower moving seat; 73. Guide block; 74. Guide groove; 75. Support block No. 1; 76. Rotating shaft; 77. Mounting ring; 7 8. Energy-absorbing torsion spring; 79. Rack; 710. Gear; 711. Rotating rod; 712. Guide frame; 713. No. 1 transverse energy-absorbing spring; 714. Movable frame; 715. Movable round pin; 716. Guide sleeve; 717. No. 1 transverse damper; 8. Seismic shear force variable rigid support structure; 81. Main energy-absorbing spring; 82. Main damper; 83. Upper rigid support seat; 84. Lower rigid support seat; 85. No. 2 support block; 86. Guide strip; 87. Slider; 88. Connecting rod; 89. No. 2 transverse energy-absorbing spring; 810. No. 2 transverse damper; 811. Slide groove; 812. Guide slider. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Example 1

[0035] See Figures 1 to 6 This invention provides a variable stiffness support for an elevated walkway, comprising an upper support plate 1, a first intermediate plate 2, a second intermediate plate 3, and a lower support plate 4. It further includes: reinforcing ribs 5, disposed within the upper support plate 1, the first intermediate plate 2, the second intermediate plate 3, and the lower support plate 4, to enhance their strength; and a rotational displacement and buffering mechanism 6, disposed on the upper support plate 1 and the first intermediate plate 2, to mitigate the effects of temperature stress, concrete shrinkage and creep, and foundation settlement on the elevated walkway. The micro-rotation displacement and displacement buffer mechanism 6 includes a rotating ring 61 and an annular seat 62 fixedly installed at the bottom of the upper support plate 1 and the top of the first intermediate plate 2. The rotating ring 61 is rotatably installed in the annular seat 62. An upper contact piece 68 and a lower contact piece 610 are fixedly installed at the bottom of the upper support plate 1 and the top of the first intermediate plate 2, respectively. A rubber buffer seat 69 is fixedly installed on the lower contact piece 610. The upper contact piece 68 and the rubber buffer seat 69 are pressed together. The movable displacement and shifting buffer mechanism 7 is set in a... On intermediate plates 2 and 3, a slight horizontal movement and movement buffer mechanism 7 is used for the aerial corridor caused by temperature stress, concrete shrinkage and creep, and foundation settlement. The mechanism includes an upper moving seat 71 and a lower moving seat 72, respectively fixedly installed at the bottom of intermediate plate 2 and the top of intermediate plate 3. The upper moving seat 71 is slidably mounted on the lower moving seat 72. A first support block 75 is fixedly installed on intermediate plate 3. A rotating shaft 76 is rotatably installed inside the first support block 75, and a mounting bracket is fixedly sleeved on the rotating shaft 76. An energy-absorbing torsion spring 78 is fixedly installed on the mounting ring 77 and the first support block 75; a seismic shear variable rigid support structure 8 is installed on the second intermediate plate 3 and the lower support plate 4, and is used for elastic support with variable stiffness under seismic shear. The seismic shear variable rigid support structure 8 includes a main energy-absorbing spring 81 and a main damper 82 fixedly installed between the second intermediate plate 3 and the lower support plate 4. An upper rigid support seat (83) and a lower rigid support seat 84 are fixedly installed at the bottom of the second intermediate plate 3 and the top of the lower support plate 4, respectively.

[0036] When the aerial walkway changes position, the rotating ring 61 rotates within the annular seat 62. This rotation drives the upper support plate 1 to rotate, thus adapting to slight positional changes in the aerial walkway under various stresses and preventing structural damage. On the other hand, the upper contact piece 68 abuts against the rubber buffer seat 69, which provides vertical cushioning. The contact resistance between the upper contact piece 68 and the rubber buffer seat 69 is relatively high, providing some rotational damping when the aerial walkway changes position. When the aerial walkway experiences slight displacement, the upper moving seat 71 slides within the lower moving seat 72. The movement of the first intermediate plate 2 drives the energy-absorbing torsion spring 78 to rotate. Part of the stress causing the aerial walkway to shift is converted into the torque of the energy-absorbing torsion spring 78, thus buffering the shift and allowing for slight displacement, preventing structural damage. When the aerial corridor is subjected to seismic shear force, the downward movement of the No. 2 intermediate plate 3 will cause the compression of the main energy-absorbing spring 81. At this time, part of the seismic shear force will be absorbed by the main energy-absorbing spring 81 and converted into the elastic potential energy of the main energy-absorbing spring 81 and quickly consumed by the main damper 82. Thus, under the action of seismic shear force, it can play an elastic support role for the corridor, allowing the corridor to undergo slight vertical displacement. When the shear force reaches a certain level, the upper rigid support seat 83 descends and directly contacts the lower rigid support seat 84, changing the elastic support into a rigid support, avoiding overload damage to the main energy-absorbing spring 81, and on the other hand, it can improve the support strength and ensure the safety of the corridor.

[0037] In this embodiment of the invention, the rotation displacement and buffer mechanism 6 further includes a slot 63 formed in the annular seat 62. A smooth block 64 is fixedly provided on the inner wall of the slot 63, and a smooth contact block 65 is fixedly provided on the outer wall of the rotating ring 61. The smooth contact block 65 is rotatably disposed in the slot 63. The smooth contact block 65 rotates in the slot 63 and contacts the smooth block 64.

[0038] To reduce the lateral rotational resistance of the rotating ring 61, the smooth contact block 65 rotates within the slot 63 and contacts the smooth locking block 64, which reduces the lateral rotational resistance of the smooth contact block 65 within the slot 63 and also serves to limit the longitudinal movement of the upper support plate 1.

[0039] In this embodiment of the invention, a steel ball movable groove 66 is further provided in the annular seat 62, and a movable steel ball 67 is movably disposed in the steel ball movable groove 66.

[0040] To reduce the rotational resistance at the bottom of the rotating ring 61, the bottom of the rotating ring 61 is in direct contact with the movable steel ball 67, which reduces contact friction. When the rotating ring 61 rotates, it drives the movable steel ball 67 to move within the steel ball movement groove 66, thereby reducing the rotational resistance at the bottom of the rotating ring 61.

[0041] In this embodiment of the invention, the moving displacement and shifting buffer mechanism 7 further includes a guide block 73 fixedly disposed at the bottom of the upper moving seat 71, and a guide groove 74 is provided at the top of the lower moving seat 72, and the guide block 73 is slidably disposed in the guide groove 74.

[0042] In order to guide the movement of the upper movable seat 71, the guide block 73 slides in the guide groove 74 to guide the movement of the upper movable seat 71 and prevent misalignment or separation between the upper movable seat 71 and the lower movable seat 72.

[0043] In this embodiment of the invention, a rack 79 is fixedly provided at the bottom of the first intermediate plate 2, and a gear 710 is fixedly sleeved on the rotating shaft 76, with the rack 79 and the gear 710 meshing with each other.

[0044] To drive the rotation of the shaft 76, the movement of the intermediate plate 2 causes the rack 79 to move, which in turn causes the gear 710 to rotate, which in turn causes the shaft 76 to rotate.

[0045] In this embodiment of the invention, a rotating rod 711 is fixedly mounted on the mounting ring 77, a guide frame 712 is fixedly mounted on the second intermediate plate 3, a movable frame 714 is slidably mounted on the guide frame 712, a first transverse energy-absorbing spring 713 is fixedly mounted on the guide frame 712 and the movable frame 714, a movable pin 715 is movably mounted inside the movable frame 714, and the tail end of the rotating rod 711 is rotatably mounted on the movable pin 715.

[0046] To enhance the buffering effect against the displacement of the aerial walkway, the rotating ring 77 rotates, causing the rotating rod 711 to rotate. The rotation of the rotating rod 711 causes the movable pin 715 to move within the movable frame 714. Depending on the direction of the walkway displacement, the movable pin 715 pulls the movable frame 714 to the left or right, thereby compressing or stretching the first transverse energy-absorbing spring 713. This converts a portion of the stress causing the aerial walkway displacement into the elastic potential energy of the first transverse energy-absorbing spring 713 and stores it within the first transverse energy-absorbing spring 713, thus enhancing the buffering effect against the displacement of the aerial walkway.

[0047] In this embodiment of the invention, a guide sleeve 716 is further fixedly provided at the bottom of the movable frame 714, and the guide sleeve 716 is slidably sleeved on the guide frame 712.

[0048] In order to guide the movement of the movable frame 714, the guide sleeve 716 slides within the guide frame 712, which can guide the movement of the movable frame 714, so that the movable frame 714 can only move on the guide frame 712.

[0049] In this embodiment of the invention, a first transverse damper 717 is further provided horizontally on the first intermediate plate 2 and the second intermediate plate 3.

[0050] To prevent vibration after the connecting corridor shifts, when the first intermediate plate 2 moves, the first lateral damper 717 will be stretched. At this time, the energy stored in the energy-absorbing torsion spring 78 and the first lateral energy-absorbing spring 713 will be quickly consumed by the first lateral damper 717 to avoid vibration of the connecting corridor.

[0051] In this embodiment of the invention, a guide bar 86 is fixedly provided on the lower support plate 4, a slider 87 is slidably provided on the guide bar 86, a connecting rod 88 is rotatably provided on the slider 87, a second support block 85 is fixedly provided at the bottom of the second intermediate plate 3, the other end of the connecting rod 88 is rotatably provided on the second support block 85, there is a set of sliders 87, and a second transverse energy-absorbing spring 89 and a second transverse damper 810 are fixedly provided between the set of sliders 87;

[0052] To enhance the buffering effect against seismic shear force and change the support rigidity, the second intermediate plate 3 descends, causing the second support block 85 to descend as well. The descent of the second support block 85 causes the connecting rod 88 to rotate, which in turn compresses the slider 87 onto the guide bar 86. As a set of guide bars 86 slide and move closer together, they compress the second transverse energy-absorbing spring 89. At this time, another part of the seismic shear force is absorbed by the second transverse energy-absorbing spring 89 and converted into its elastic potential energy, which is then quickly dissipated by the second transverse damper 810. Thus, under the action of seismic shear force, it can play an elastic support role for the corridor, allowing the corridor to undergo slight vertical displacement. When the shear force reaches a certain level, the upper rigid support seat 83 descends and directly contacts the lower rigid support seat 84, changing the variable elastic support into a rigid support. On the one hand, this avoids overload damage to the main energy-absorbing spring 81 and the second transverse energy-absorbing spring 89; on the other hand, it increases the support strength and ensures the safety of the corridor.

[0053] In this embodiment of the invention, a groove 811 is further provided on the guide bar 86, and a guide slider 812 is fixedly provided at the bottom of the slider 87, and the guide slider 812 is slidably disposed in the groove 811.

[0054] In order to guide the movement of slider 87, guide slider 812 slides within slide groove 811 to guide the movement of slider 87, so that slider 87 can only move on guide bar 86.

[0055] Working principle: When the aerial walkway experiences slight positional changes due to temperature stress, concrete shrinkage and creep, and foundation settlement, the rotating ring 61 rotates within the annular seat 62. Simultaneously, the smooth contact block 65 rotates within the slot 63 and contacts the smooth locking block 64, reducing the rotational resistance of the smooth contact block 65 within the slot 63. The rotation of the rotating ring 61 drives the upper support plate 1 to rotate, thus adapting to slight positional changes in the aerial walkway under various stresses and preventing structural damage. On the other hand, the upper contact piece 68 abuts against the rubber buffer seat 69, which provides vertical buffering. The contact resistance between the upper contact piece 68 and the rubber buffer seat 69 is relatively high, providing some rotational damping when the aerial walkway changes position. When the aerial walkway experiences slight displacement, the upper moving seat 71 slides within the lower moving seat 72, and the guide block 73 slides within the guide groove 74, preventing misalignment or separation between the upper moving seat 71 and the lower moving seat 72. When the intermediate plate 2 moves, it drives the rack 79 to move. The rack 79 then drives the gear 710 to rotate. The gear 710 then drives the rotating shaft 76 to rotate. The rotating shaft 76 then drives the mounting ring 77 to rotate. The rotating ring 77 then drives the energy-absorbing torsion spring 78 to rotate. Part of the stress causing the aerial walkway to shift is converted into the torque of the energy-absorbing torsion spring 78, thus buffering the shift of the aerial walkway. At the same time, the rotating ring 77 drives the rotating rod 711 to rotate. The rotating rod 711 then drives the movable pin 715 to move within the movable frame 714. The internal movement, depending on the direction of the corridor displacement, causes the movable pin 715 to pull the movable frame 714 to move left or right, thereby compressing or stretching the first transverse energy-absorbing spring 713. This converts some of the stress causing the aerial corridor displacement into the elastic potential energy of the first transverse energy-absorbing spring 713, which is then stored within it. The guide sleeve 716 slides within the guide frame 712, guiding the movement of the movable frame 714 so that it can only move on the guide frame 712. When the first intermediate plate 2 moves, the first transverse damper 717 is stretched. At this time, the energy stored in the energy-absorbing torsion spring 78 and the first transverse energy-absorbing spring 713 is quickly dissipated by the first transverse damper 717, preventing vibration of the corridor. Through the above mechanism, the corridor can be allowed to undergo slight displacement, and the displacement is buffered to avoid structural damage to the corridor.When the aerial corridor is subjected to seismic shear force, the downward movement of the second intermediate plate 3 will cause the compression of the main energy-absorbing spring 81. At this time, part of the seismic shear force will be absorbed by the main energy-absorbing spring 81 and converted into the elastic potential energy of the main energy-absorbing spring 81, which will be quickly consumed by the main damper 82. As the second intermediate plate 3 descends, it will drive the second support block 85 to descend. The descent of the second support block 85 will cause the connecting rod 88 to rotate. The rotation of the connecting rod 88 will squeeze the slider 87 to slide on the guide bar 86. The sliding of a set of guide bars 86 and their approach to each other will compress the second transverse energy-absorbing spring 89. At this time, another part of the seismic shear force will be compressed. The force will be absorbed by the second transverse energy-absorbing spring 89 and converted into the elastic potential energy of the second transverse energy-absorbing spring 89, which will be quickly consumed by the second transverse damper 810. Thus, under the action of seismic shear force, it can play the role of elastic support for the corridor, allowing the corridor to undergo slight vertical displacement. When the shear force reaches a certain level, the upper rigid support seat 83 descends and comes into direct contact with the lower rigid support seat 84, changing the variable elastic support into a rigid support. On the one hand, it can avoid damage to the main energy-absorbing spring 81 and the second transverse energy-absorbing spring 89 due to overload, and on the other hand, it can improve the support strength and ensure the safety of the corridor.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable stiffness support for an elevated walkway, comprising an upper support plate, a first intermediate plate, a second intermediate plate, and a lower support plate, characterized in that, Also includes: Reinforcing ribs are provided in the upper support plate, the first intermediate plate, the second intermediate plate, and the lower support plate to enhance the strength of the upper support plate, the first intermediate plate, the second intermediate plate, and the lower support plate. A rotation displacement and buffer mechanism is provided on the upper support plate and the first intermediate plate for rotation displacement and displacement buffering of the aerial corridor. The rotation displacement and buffer mechanism includes a rotating ring and an annular seat fixedly provided on the bottom of the upper support plate and the top of the first intermediate plate. The rotating ring is rotatably provided in the annular seat. An upper contact piece and a lower contact piece are fixedly provided on the bottom of the upper support plate and the top of the first intermediate plate, respectively. A rubber buffer seat is fixedly provided on the lower contact piece. A movable displacement and shifting buffer mechanism is installed on the No. 1 intermediate plate and the No. 2 intermediate plate for minor horizontal movement and movement buffering of the aerial corridor. The movable displacement and shifting buffer mechanism includes an upper movable seat and a lower movable seat fixedly installed at the bottom of the No. 1 intermediate plate and the top of the No. 2 intermediate plate, respectively. The upper movable seat is slidably installed on the lower movable seat. A No. 1 support block is fixedly installed on the No. 2 intermediate plate. A rotating shaft is rotatably installed inside the No. 1 support block. An installation ring is fixedly sleeved on the rotating shaft. An energy-absorbing torsion spring is fixedly installed on the installation ring and the No. 1 support block. A seismic shear variable rigid support structure is installed on the No. 2 intermediate plate and the lower support plate for elastic support with variable stiffness under seismic shear force. The seismic shear variable rigid support structure includes a main energy-absorbing spring and a main damper fixedly installed between the No. 2 intermediate plate and the lower support plate. An upper rigid support seat and a lower rigid support seat are fixedly installed at the bottom of the No. 2 intermediate plate and the top of the lower support plate, respectively. A rack is fixedly installed at the bottom of the first intermediate plate, and a gear is fixedly sleeved on the rotating shaft, with the rack and the gear meshing together. A rotating rod is fixedly installed on the mounting ring, a guide frame is fixedly installed on the second intermediate plate, a movable frame is slidably installed on the guide frame, a first transverse energy-absorbing spring is fixedly installed on the guide frame and the movable frame, a movable pin is movably installed inside the movable frame, and the tail end of the rotating rod is rotatably installed on the movable pin.

2. The variable stiffness high-altitude connecting corridor support according to claim 1, characterized in that: The rotation displacement and buffer mechanism also includes a slot formed in the annular seat, a smooth locking block is fixedly provided on the inner wall of the slot, and a smooth contact block is fixedly provided on the outer wall of the rotating ring, with the smooth contact block rotatably disposed in the slot.

3. A variable stiffness high-altitude connecting corridor support according to claim 2, characterized in that: The annular seat has a groove for moving steel balls, and a movable steel ball is movably disposed in the groove.

4. A variable stiffness high-altitude connecting corridor support according to claim 1, characterized in that: The moving displacement and shifting buffer mechanism also includes a guide block fixedly disposed at the bottom of the upper moving seat, and a guide groove is provided on the top of the lower moving seat, with the guide block slidably disposed in the guide groove.

5. A variable stiffness high-altitude connecting corridor support according to claim 4, characterized in that: A guide sleeve is fixedly provided at the bottom of the movable frame, and the guide sleeve is slidably sleeved on the guide frame.

6. A variable stiffness high-altitude connecting corridor support according to claim 5, characterized in that: A transverse damper is horizontally mounted on the first intermediate plate and the second intermediate plate.

7. A variable stiffness high-altitude connecting corridor support according to claim 1, characterized in that: A guide bar is fixedly installed on the lower support plate, a slider is slidably installed on the guide bar, a connecting rod is rotatably installed on the slider, a second support block is fixedly installed at the bottom of the second intermediate plate, and the other end of the connecting rod is rotatably installed on the second support block. There is a set of sliders, and a second transverse energy-absorbing spring and a second transverse damper are fixedly installed between the sliders in the set.

8. A variable stiffness high-altitude connecting corridor support according to claim 7, characterized in that: The guide bar has a groove, and a guide slider is fixedly installed at the bottom of the slider, and the guide slider is slidably installed in the groove.

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