CN-122013905-A - Friction-variable self-resetting inertial container

CN122013905ACN 122013905 ACN122013905 ACN 122013905ACN-122013905-A

Abstract

The invention relates to the technical field of engineering vibration resistance, in particular to a variable friction self-resetting inertial container which comprises an external rigid frame, a connecting sleeve and a movable end, wherein a friction energy consumption component, a self-resetting component and a ball screw are arranged in the rigid frame, the ball screw transversely penetrates through the rigid frame, a ball nut is sleeved in the middle of the ball screw and is fixed in the rigid frame through a ball bearing, the ball screw is provided with the friction energy consumption component and the self-resetting component which are symmetrically sleeved on two sides of the ball nut, the friction energy consumption component comprises a rotary disc, four friction sliding blocks, a disc cover plate and a reset spring, the rotary disc is fixedly connected with the ball nut, the rotary disc comprises a bottom plate and an annular bulge, and a variable friction system consisting of the rotary disc and the movable friction sliding blocks is used for realizing that the positive pressure born by the friction sliding blocks changes along with the change of the rotation speed of the disc.

Inventors

ZHAO GUIFENG
LIN KAIRONG
LIU WEI
MA YUHONG
LUO HONGHAO
ZHANG TIANJUN

Assignees

广州大学

Dates

Publication Date: 20260512
Application Date: 20260320

Claims (9)

1. A friction-changing self-resetting inertial container is characterized by comprising an external rigid frame, a connecting sleeve and a movable end, wherein a friction energy consumption member, a self-resetting member and a ball screw are arranged in the rigid frame, the ball screw transversely penetrates through the rigid frame, a ball nut is sleeved in the middle of the ball screw and fixed in the rigid frame through the ball bearing, the ball screw is provided with the friction energy consumption member and the self-resetting member which are symmetrically sleeved on two sides of the ball nut, the friction energy consumption member comprises a rotary disc, four friction sliding blocks, a disc cover plate and a reset spring, the rotary disc is fixedly connected with the ball nut, the rotary disc comprises a bottom plate and an annular bulge, four first connecting cylinders and a plurality of bolt holes are formed in the annular bulge, each of two side surfaces of the friction sliding blocks is respectively provided with a second connecting cylinder and a rectangular block, four groups of limit slots and a plurality of bolt holes which are oriented in different directions are formed in the disc cover plate, the limit slots comprise a first slot and a second slot, the first slot and the second slot are symmetrically sleeved on the same radial line, the first connecting cylinder and the first sliding slot are connected with the first sliding cylinder and the second sliding cylinder slot and the reset cylinder slot, the reset spring are connected with the two ends of the first connecting cylinder and the reset cylinder slot and the reset spring in a sleeved mode, and the reset cylinder slot is connected with the two ends of the reset cylinder and the reset cylinder.
2. The variable friction self-resetting inertial container according to claim 1, wherein concave baffles are arranged on two sides of the rigid frame, the concave baffles are sleeved on the outer wall of the resetting sleeve, the connecting sleeve is fixedly connected with the concave baffles on one side, and the movable end is slidingly inserted into the resetting sleeve from the concave baffles on the other side and connected with the ball screw.
3. The variable friction self-resetting inertial container according to claim 2, wherein a pressing disc limiting cover connected through threads is arranged at the outer end of the resetting sleeve, and a disc spring and a sliding pressing disc are arranged in the resetting sleeve.
4. The variable friction self-resetting inertial container according to claim 2, wherein a sliding block is arranged in the connecting sleeve, and the sliding block is detachably contacted with the end head of the other side of the ball screw.
5. The variable friction self-resetting inertial container according to claim 1, wherein the friction energy consumption member is rotatably installed in the fixed sleeve, a friction annular plate is sleeved on the inner wall of the fixed sleeve, the friction annular plate is located on the periphery of the friction sliding block, the friction energy consumption member and the fixed sleeve are sleeved outside the ball screw, and the fixed sleeve is fixedly connected with the rigid frame.
6. The variable friction self-resetting inertial container according to claim 1, wherein the disc cover plate is connected with the rotary disc through a connecting bolt, the friction slide block is positioned between the rotary disc and the disc cover plate, the reset spring is radially arranged between the friction slide block and the disc cover plate, and four friction slide blocks form a circular ring shape and are arranged on the periphery of the annular bulge.
7. The variable friction self-resetting inertial container of claim 1, wherein the bottom plate of the rotary disk is provided with four rectangular holes, the rectangular blocks are slidably inserted into the rectangular holes, and the radial length of the rectangular blocks is smaller than that of the rectangular holes.
8. The variable friction self-resetting inertial container of claim 1, wherein the diameter of the second connecting cylinder is smaller than the radial length of the second slot. To ensure that the friction slide is unobstructed in radial sliding.
9. The variable friction self-resetting inertial container of claim 1, wherein the connecting sleeve and the outer end of the movable end are provided with connecting lugs.

Description

Friction-variable self-resetting inertial container Technical Field The invention relates to the technical field of engineering earthquake resistance, in particular to a variable friction self-resetting inertial container. Background In order to reduce the influence of earthquake and protect the safety of buildings, internal personnel and equipment, the energy dissipation and shock absorption technology has become an indispensable key means for earthquake and disaster prevention of modern engineering structures. The traditional earthquake-resistant design consumes energy at the cost of structural member damage, and is easy to cause larger residual deformation, so that the post-earthquake repair is difficult and the cost is high. Currently, energy dissipation and vibration reduction technologies mainly depend on various types of dampers. The friction damper has simple structure and high energy consumption capacity, but the friction force generated by the friction damper is unchanged, cannot be changed according to the change of the earthquake intensity, lacks self-resetting capacity, has large post-earthquake residual displacement, and can effectively reduce the residual displacement, but often increases the rigidity of the structure and possibly amplifies the floor acceleration. The inertial container is used as an acceleration-related control device, the structure period can be obviously prolonged through the apparent mass effect generated by the rotation of the flywheel, and the acceleration response is reduced, but an efficient energy consumption mechanism is lacked. Disclosure of Invention The application aims to provide a friction-variable self-resetting inertial container, which aims to solve the problems in the prior art. The embodiment of the application provides a variable friction self-resetting inertial container, which comprises an external rigid frame, a connecting sleeve and a movable end, wherein a friction energy consumption member, a self-resetting member and a ball screw are arranged in the rigid frame, the ball screw transversely penetrates through the rigid frame, a ball nut is sleeved in the middle of the ball screw, the ball nut is fixed in the rigid frame through a ball bearing, the ball screw is provided with the friction energy consumption member and the self-resetting member which are symmetrically sleeved on two sides of the ball nut, the friction energy consumption member comprises a rotary disc, four friction sliding blocks, a disc cover plate and a reset spring, the rotary disc is fixedly connected with the ball nut, the rotary disc comprises a bottom plate and an annular bulge, four first connecting cylinders and a plurality of bolt holes are formed in the annular bulge, two side surfaces of each friction sliding block are respectively provided with a second connecting cylinder and a rectangular block, four groups of limit slots and a plurality of bolt holes which are in different directions are formed in the disc cover plate, the limit slots comprise a first slotted hole and a second slotted hole, the first slotted hole and the second slotted hole are symmetrically sleeved on the same radial line, the first slotted hole and the second slotted hole are connected with the first slotted hole by sliding sleeve and the reset spring in a self-plugging mode, and the slotted hole is connected with the two slotted holes by the self-plugging connection position of the first slotted hole and the reset sleeve. Preferably, concave baffles are arranged on two sides of the rigid frame, the concave baffles are sleeved on the outer wall of the reset sleeve, the connecting sleeve is fixedly connected with the concave baffles on one side, and the movable end is connected with the ball screw in a sliding manner from the concave baffles on the other side to the reset sleeve. Preferably, the outer end of the reset sleeve is provided with a pressure plate limiting cover connected through threads, and a disc spring and a sliding pressure plate are arranged in the reset sleeve. Preferably, a sliding block is arranged in the connecting sleeve, and the sliding block is in separable contact with the end head of the other side of the ball screw. Preferably, the friction energy dissipation member is rotatably arranged in the fixed sleeve, a friction annular plate is sleeved on the inner wall of the fixed sleeve, the friction annular plate is positioned on the periphery of the friction sliding block, the friction energy dissipation member and the fixed sleeve are sleeved outside the ball screw, and the fixed sleeve is fixedly connected with the rigid frame. Preferably, the disc cover plate is connected with the rotary disc through a connecting bolt, the friction sliding blocks are positioned between the rotary disc and the disc cover plate, the reset spring is radially arranged between the friction sliding blocks and the disc cover plate, and four friction sliding blocks form a circular ring shape and are