A vibration damping device including a spiral inerter

Abstract

The application discloses a kind of damping devices containing spiral inerter, belong to buffer support equipment technical field, it is suitable for the axial buffering damping of mechanical equipment, precision instrument.Different from the common inerter damping device of existing, the device uses composite spiral elastic structure, is composed of upper support plate, lower base, spiral buffer piece and other core components, and each component size is adapted and can be 3D printed.The upper support plate is provided with integrally-formed upper spiral tower and spring mounting hole, the lower base is provided with mounting groove and threaded hole, the spiral buffer piece is formed by upper and lower spiral tower concave-convex engagement, and rotary inerter is realized by cooperating with bearing, screw is fixed buffer piece, cover body forms sealed cavity, and four round sticks circumferential spring and spiral buffer piece cooperatively bear force.

Description

Technical Field

[0001] This invention relates to the field of buffer support vibration reduction equipment technology, specifically a novel vibration reduction device containing a helical inertial capacitance, suitable for buffer vibration reduction scenarios such as mechanical equipment and precision instruments, to achieve axial buffer vibration reduction. Background Technology

[0002] Inertial-capacitive vibration reduction technology, as a highly efficient vibration reduction solution, plays a crucial role in ensuring the operational stability of various equipment. Its core requirement is to achieve effective regulation and dissipation of vibration energy through reasonable structural design. Currently, the implementation of inertial-capacitive vibration reduction systems largely relies on complex structural designs, resulting in problems such as cumbersome structures, difficult assembly, and large space requirements. This limits its widespread application in miniaturized and compact equipment and makes it difficult to meet the practical needs of convenient deployment in different scenarios.

[0003] In response to the above situation, there is an urgent need for a vibration damping device with a reasonable and compact structure, an integrated structure, and the ability to be 3D printed, to provide a new way to realize the application of inertial capacitive vibration damping technology, taking into account both vibration damping effect and ease of use. Summary of the Invention

[0004] This invention addresses the problem of complex existing inertial capacitance structures by proposing a compact inertial capacitance vibration reduction structure.

[0005] This invention provides a composite spiral elastic buffer support device, the core of which includes an upper support plate (1), a lower base (2), a spiral buffer component (3), a circumferential spring assembly (4), screws (5), and a cover (6). The structure and connection relationship of each component are as follows: - The upper support plate (1) is a square plate with an integrally formed upper spiral tower (15) at the bottom center to improve torsional stiffness; several spring mounting holes (11) are provided around the bottom along the circumference of the upper spiral tower (15), and spring mounting holes (13) are provided at the four corners to facilitate detachable connection with the spring.

[0006] - The lower base (2) is compatible with the upper support plate (1) in size and material. A buffer mounting groove (16) is provided at the top center for radial positioning of the lower spiral tower (31). A threaded hole (14) is provided at the bottom center of the groove to cooperate with the screw (5) to fix the spiral buffer (3). A spring mounting hole (11) corresponding to the upper support plate (1) is provided at the top to ensure that the spring is accurately embedded.

[0007] - The spiral buffer (3) is composed of an upper spiral tower (15) and a lower spiral tower (31) engaging. The upper end engages with the upper spiral tower (15) with a concave-convex spiral to transmit torque and improve torsional resistance. The lower end is placed in the mounting groove (16) with a through hole in the center (the hole diameter is slightly larger than the screw, and the gap is ≤0.5mm) for the screw (5) to pass through.

[0008] - The lower spiral tower (31) is fitted and engaged with the bearing (7), and the bearing (7) is fitted and engaged with the lower base (2), so that when the spiral tower is rotated and damped, the corresponding positions of the lower base (2) and the upper support plate (1) remain unchanged.

[0009] - The screw (5) is a stainless steel screw. The screw rod passes through the through hole of the lower spiral tower (31) and engages with the threaded hole (14) of the lower base (2) to rigidly fix the buffer and avoid vibration displacement.

[0010] - The cover (6) is an annular seal with an inner thread that matches the screw (5). After screwing, it fits tightly against the lower end face of the lower spiral tower (31) to form a sealed cavity, preventing impurities from entering and causing wear and aging.

[0011] - The circumferential spring assembly (4) contains four stainless steel cylindrical springs, with corresponding mounting holes (11) embedded at both ends. They are distributed in a square pattern along the circumference of the spiral buffer (3) and work together with the spiral buffer to bear axial impact.

[0012] - The lower spiral tower (31) and the upper spiral tower (15) can also be drilled at the same height to install weights or other types of mass blocks to enhance the inertial damping effect of the inertial capacity and optimize the dynamic damping performance of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure; Figure 2 This is a side view of the lower spiral tower and the base spring mounting holes; Figure 3 This is a side view of the upper spiral tower and the spring mounting holes of the support plate; Figure 4 This is a top view of the lower spiral tower and the base spring mounting holes; Figure 5 This is a top view of the upper spiral tower and the spring mounting holes of the support plate; The numbers in the diagram are explained as follows: 1-Upper support plate, 2-Lower base, 3-Spiral buffer, 4-Circumferential spring assembly, 5-Screw, 6-Cover, 7-Bearing, 11-Spring mounting hole, 13-Mounting hole, 14-Threaded hole, 15-Upper spiral tower, 31-Lower spiral tower.

[0014] Implementation

[0015] - Upper support plate (1) and upper spiral tower (15): 3D printed, plate side length 100mm, thickness 10mm; upper spiral tower 4 turns, pitch 15mm, outer diameter 40mm, with a boss at the snap-fit ​​end; 4 spring mounting holes (hole diameter 16mm), mounting hole (5mm, M5 internal thread).

[0016] - Lower base (2): 3D printed, with the same size as the upper support plate; mounting groove inner diameter 40mm, depth 7mm; threaded hole M5, depth 6mm.

[0017] - Lower spiral tower (31): Parameters are adapted to the upper spiral tower, with a groove at the locking end; through hole 5.5mm, inner wall wear-resistant coating (0.1mm).

[0018] - Circumferential spring assembly (4): Made of 304 stainless steel, with a wire diameter of 0.8mm, an outer diameter of 16mm, and a free length of 80mm, totaling 4 pieces.

[0019] - Screws (5): 304 stainless steel M5×6mm screws.

[0020] (1) Pre-assembly: The groove of the lower spiral tower (31) is aligned and screwed into the boss of the upper spiral tower (15) to form a spiral buffer (3) to ensure that there is no looseness.

[0021] (2) Positioning and installation: Place the component on the lower base (2) and embed the lower spiral tower (31) into the mounting slot (16).

[0022] (3) Fastening: Screw (5) through hole and threaded hole are screwed together.

[0023] (4) Sealing: The cover (6) is screwed into place to fit the lower spiral tower (31).

[0024] (5) Install the spring: The spring is embedded in the mounting hole and there is no exposed looseness.

Claims

1. A vibration damping device comprising a helical inertial capacitance, characterized in that, It includes an upper support plate (1), a lower base (2), a spiral damper (3), a circumferential spring assembly (4), screws (5), and a cover (6); the upper support plate (1) has an integrally formed upper spiral tower (15) at the bottom center, and the bottom of the upper support plate (1) is provided with several spring mounting holes (11) along the circumference of the upper spiral tower (15), and mounting holes (13) are provided at the four corners; the lower spiral tower (31) is fitted and engaged with the bearing (7), and the bearing (7) is fitted and engaged with the lower base (2), so that when the spiral tower is rotated and damped, the corresponding positions of the lower base (2) and the upper support plate (1) remain unchanged. The lower base (2) has a damping component mounting groove (16) at the top center, and a threaded hole (14) at the bottom of the damping component mounting groove (16). The lower base (2) has spring mounting holes (11) at the top that correspond one-to-one with the spring mounting holes (11) of the upper support plate (1). The spiral damping component (3) consists of an upper spiral tower (15) and a lower spiral tower (31). The lower spiral tower (31) is an elastic component. Its upper end is engaged with the upper spiral tower (15), and its lower end is placed in the damping component mounting groove (16). A through hole is provided in the center; the screw (5) passes through the through hole of the lower spiral tower (31) and engages with the threaded hole (14) of the lower base (2); the cover (6) is a ring structure with an internal thread on its inner side and engages with the threaded head of the screw (5); the cover (6) is in contact with the lower end face of the lower spiral tower (31); the circumferential spring group (4) includes at least four cylindrical springs, with the two ends of the springs respectively embedded in the spring mounting holes (11) of the upper support plate (1) and the lower base (2), and evenly distributed along the circumference of the spiral damper (3).

2. The composite helical elastic vibration damping support device according to claim 1, characterized in that, The upper support plate (1) and the lower base (2) are square plate structures made of the same material.

3. The composite helical elastic vibration damping support device according to claim 1, characterized in that, The lower spiral tower (31) and the upper spiral tower (15) are adapted to each other in terms of spiral parameters, and the mating surface is a spiral mating surface.

4. The composite helical elastic vibration damping support device according to claim 1, characterized in that, The circumferential spring group (4) has 4 springs, which are arranged in a square.

5. The composite helical elastic vibration damping support device according to claim 1, characterized in that, The mounting hole (13) is provided with an internal thread for detachable connection with external equipment.

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