CN203906629U - Suspension type resonance-free vibration isolator - Google Patents

Abstract

The utility model relates to a suspension type does not have resonance isolator hangs core lower extreme and spring holder sliding fit down and is connected, upper end and last spring holder threaded connection, goes up the spring holder and is connected with waist drum shape spring leaf attenuator dry friction, goes up and has inlayed main spring and end spring between spring holder and the lower spring holder, and waist drum shape spring leaf attenuator upper end is connected with the base through opening toper rand and last toper rand, base and shell threaded connection, and the shell is filled with wire mesh with lower spring holder upper end. The precompression amount of the main spring is adjusted by adjusting the threads on the suspension core, the resonance peak value is eliminated by the dry friction damping force between the upper spring seat and the damper, the upper end of the damper is clamped by the conical clamping ring, the upper end of the conical clamping ring is connected with the bottom cover, the bottom cover is in threaded connection with the shell, and the damping amount of the damper can be adjusted by adjusting the threads between the bottom cover and the shell. The utility model has the advantages of damping is adjustable, spring precompression volume is adjustable, no resonance, shock resistance, has played better vibration isolation effect.

Description

Suspended No-Resonance Isolators

technical field

The utility model relates to a vibration isolation device, in particular to a suspension type non-resonance vibration isolation device.

Background technique

Among the currently disclosed vibration isolators, except for bottom-supported non-resonant vibration isolators and back-to-back type non-resonant vibration isolators, no resonance-free vibration isolators have yet appeared in suspension type vibration isolators. With the rapid development of modern industry, higher and higher requirements are put forward for the anti-interference ability of some precision equipment in vibration, shock, acceleration and other environments. The existing suspension type vibration isolator cannot solve the problem of resonance Effects on precision equipment. Therefore, for some precision equipment that needs to be suspended, a new suspension shock absorber is required.

Contents of the invention

The technical problem to be solved by the utility model is to provide a suspension type non-resonant vibration isolator to solve the resonance problem in the traditional suspension type vibration isolator.

The technical solution adopted by the utility model to solve the technical problem is: a suspension type non-resonant vibration isolator, including a suspension core, an upper spring seat, a lower spring seat, a drum-shaped spring sheet damper, a main spring, a bottom spring, a base, The shell is characterized in that: the lower end of the suspension core is slidingly fitted with the lower spring seat, the upper end is threaded with the upper spring seat, the upper spring seat is dry frictionally connected with the drum-shaped spring leaf damper, and the upper spring seat and the lower spring seat are embedded with The main spring and the bottom spring, and the bottom spring is sleeved on the suspension core, the main spring is sleeved outside the bottom spring, the upper end of the drum-shaped spring leaf damper is connected to the base through the open tapered collar and the upper tapered collar, and the base is connected to the shell Threaded connection, the shell and the upper end of the lower spring seat are filled with wire mesh.

The open tapered collar is connected with the upper tapered collar through a tapered surface. The lower end of the suspension core is hexagonal, the end of the upper spring seat has a word groove, and the base has an inner hexagonal hole. the

The beneficial effects of the utility model are:

In the utility model, the drum-shaped spring sheet damper provides the dry friction damping force. When the external exciting force is smaller than the dry friction damping force, the dry friction damping force will structurally "lock" the vibration-isolated object and the foundation together. The object to be isolated does not vibrate relative to the foundation, and the vibration isolation transmissibility is 1; when the excitation force is greater than the dry friction damping force, the object to be isolated and the foundation can be "unlocked" and the vibration can continue. Under the condition of equal displacement excitation, the external excitation force increases with the increase of the excitation frequency, so the appropriate dry friction damping force can be adjusted through the drum-shaped spring damper, so that the vibration-isolated object is "locked" when excited at low frequency ”, and achieve vibration reduction when high-frequency excitation, the vibration isolation transmission rate of the vibration isolation system is not greater than 1 throughout the vibration process, that is, no resonance is achieved.

In the utility model, the dry friction damping force of the drum-shaped spring sheet damper can be adjusted by adjusting the screw thread between the base and the shell, and the taper collar of the opening can be zoomed in and out through the up and down movement of the screw pair of the base and the action of the tapered surface. Therefore, the upper end of the drum-shaped leaf spring damper is tightened or loosened, and the dry friction damping force is adjusted. It is also possible to adjust the pre-compression amount of the main spring by adjusting the screw thread between the suspension core and the upper spring seat, thereby adjusting the expansion and contraction of the suspension core when the vibration isolator is suspending the equipment.

In the utility model, it has impact resistance. When there is an impact, the lower end of the upper spring seat touches the bottom spring. At this time, the main spring and the bottom spring work together to resist the impact.

In the utility model, it also has the ability to resist lateral vibration and impact. There is a gap between the lower spring seat and the shell, which is filled with wire mesh. When there is lateral vibration or impact, the upper end of the lower spring seat squeezes the wire mesh. At the same time, the waist-drum-shaped spring piece has lateral stiffness, which jointly resist lateral vibration and impact.

Compared with the existing suspension type vibration isolator, the utility model has the advantages of no resonance, adjustable damping, adjustable pre-compression, impact resistance, etc., and has a better vibration isolation effect.

Description of drawings

Fig. 1 is a structural main sectional view of the present utility model;

FIG. 2 is a top view of FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figures 1 and 2, a suspended non-resonant vibration isolator includes a suspension core 1, a lower spring seat 2, a wire mesh 3, a main spring 4, a bottom spring 5, an upper spring seat 6, and a drum-shaped spring piece Damper 7, opening tapered collar 8, upper tapered collar 9, base 10, shell 11.

The lower end of the suspension core 1 has an internally threaded hole. The suspension device is connected with the lower spring seat 2 by sliding fit, and is threaded with the upper spring seat 6. The main spring 4 and the bottom spring 5 are embedded in the upper and lower spring seats 6 and 2. The bottom spring 5 is set on the suspension core 1, the main spring 4 is sleeved outside the bottom spring 5, the upper spring seat 6 is dry frictionally connected with the waist drum-shaped spring plate damper 7, the upper end of the damper 7 is connected with the open cone collar 8, and the open cone Shaped collar 8 is connected by tapered surface with upper tapered collar 9, and base 10 is threaded with shell 11, and shell 11 and lower spring seat 2 upper ends are filled with wire mesh 3.

The lower end of the suspension core 1 is hexagonal, which can be twisted with a hexagonal wrench. There is a groove at the end of the upper spring seat 6, which can be fixed with a flat screwdriver. Therefore, the main screw can be adjusted by adjusting the thread pair between the suspension core 1 and the upper spring seat 6. The pre-compression amount of the spring can adjust the expansion and contraction of the suspension core of the vibration isolator when the equipment is suspended; Adjust the up and down movement of the upper conical collar 9, and adjust the scaling of the opening conical collar 8 through the action of the conical surface, thereby controlling the tightening or loosening of the upper end of the damper 7, so as to adjust the dryness of the waist drum-shaped spring leaf damper 7. The purpose of the magnitude of the frictional damping force.

When there is an impact, the lower end of the upper spring seat 6 hits the bottom spring 5, and now the main spring 4 and the bottom spring 5 work together to resist the impact. When there are lateral vibrations and impacts, the upper end of the lower spring seat 2 squeezes the wire mesh 3, and the drum-shaped spring piece 7 has lateral stiffness to jointly resist lateral vibrations and impacts.

Claims (3)

1. a suspension type resonance-free vibration isolator, comprise and hang core (1), upper spring seat (6), lower spring cup (2), dolioform spring sheet damper (7), main spring (4), bottom spring (5), base (10), shell (11), it is characterized in that: described suspension core (1) lower end and lower spring cup (2) sliding connection, upper end is threaded with upper spring seat (6), upper spring seat (6) is connected with dolioform spring sheet damper (7) dry friction, between upper spring seat (6) and lower spring cup (2), be embedded with main spring (4) and bottom spring (5), and bottom spring (5) is enclosed within and hangs on core (1), main spring (4) is socketed in outside bottom spring (5), described dolioform spring sheet damper (7) upper end is connected with base (10) with upper conical collar (9) by opening taper collar (8), base (10) is threaded with shell (11), shell (11) is filled with lower spring cup (2) wire gaze for upper end (3).

2. suspension type resonance-free vibration isolator according to claim 1, is characterized in that: between described opening taper collar (8) and upper conical collar (9), by the conical surface, be connected.

3. suspension type resonance-free vibration isolator according to claim 1, is characterized in that: described suspension core (1) lower end is hexagon; There is a word groove described upper spring seat (6) end; Described base has inner hexagonal hole on (10).