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Membrane type hydraulic vibration exciter

A hydraulic exciter and membrane technology, applied in the direction of fluid pressure actuating devices, etc., can solve the problems that the air pressure and hydraulic exciters cannot be frequency-modulated and amplitude-modulated, and the mechanical exciters cannot be stopped for amplitude modulation, etc., to achieve the excitation force. Evenly distributed, easy to synchronize and parallel effects

Active Publication Date: 2015-03-25
NANJING INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the mechanical exciter cannot be tuned without stopping, and the pneumatic and hydraulic exciters cannot be tuned independently.

Method used

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  • Membrane type hydraulic vibration exciter
  • Membrane type hydraulic vibration exciter
  • Membrane type hydraulic vibration exciter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] The film type hydraulic exciter is composed of two parallel rigid plates 1, 2, and a film 3 made of flexible material that does not leak and is not easy to elongate. Lun, such as figure 1 , the opposite sides of rigid plate 1 and rigid plate 2 are A` and B` respectively, the distance between A` and B` is very small, preferably <30mm, and the two rigid plates can be perpendicular to A` relative motion.

[0036] Surface A` and surface B` can be divided into three areas:

[0037] zone I in constant contact with the membrane 3 or liquid;

[0038] zone II which is never in contact with the membrane 3 or the liquid;

[0039] Other areas III.

[0040] Area Ⅰ and area Ⅱ are not connected, and the film 3 is only in the area Ⅰ and the rigid plate is sealed and connected. The connection method is bonding, flange 13 compression connection or only contact but not fixed, that is, with the rigid plate provided with the channel 4, In the non-channel 4 area, the membrane 3 is bonde...

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Abstract

The invention provides a membrane type hydraulic vibration exciter using liquid as a medium. The membrane type hydraulic vibration exciter comprises a membrane, a rigid plate I and a rigid plate II, wherein the membrane is made of a flexible material and is arranged between the rigid plate I and the rigid plate II, and the rigid plate I and the rigid plate II are parallel to each other. An enclosed space for accommodating the liquid is formed by the membrane individually or by the membrane, the rigid plate I and the rigid plate II jointly, and is communicated with a hydraulic source periodically changeable in liquid flow direction through a channel. The membrane type hydraulic vibration exciter has the advantages that the principle that the membrane can bear high intensity of pressure when the radius of curvature is small, and vibration displacement and vibratory force are generated through periodic liquid filling and discharging of the space in the membrane; the hydraulic vibration exciter does not bear the vibratory force, so that troubles about lubrication, sealing, heat dissipation, maintenance and the like of related bearings of mechanical vibration exciters can be overcome; due to backspring sets, the hydraulic vibration exciter can output high accelerated speed.

Description

technical field [0001] The invention relates to a film type hydraulic exciter, which belongs to the field of vibration machinery. Background technique [0002] The exciters used in vibrating machinery are mechanical and hydraulic or pneumatic. [0003] The common feature of mechanical exciters is that the vibration force must act on the bearing, and the operation of the bearing will inevitably cause problems such as heat, wear, and grease leakage, which makes lubrication, sealing, heat dissipation, maintenance, and manufacturing very complicated, limiting the vibration force and increase in vibration frequency. [0004] The low energy utilization rate of hydraulic and pneumatic exciters, the high manufacturing precision required, and the complicated sealing limit their application. In order to obtain a large vibration force, multiple vibrators have to be connected in parallel, which creates synchronization problems. Parallel connection of more than two exciters will l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/10F15B15/20
CPCF15B15/10F15B15/20
Inventor 杨小兰刘极峰邹宇李岩佳
Owner NANJING INST OF TECH
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