CN2124060U

CN2124060U - Mechanical oscillator

Info

Publication number: CN2124060U
Application number: CN 92209887
Authority: CN
Inventors: 任向宇; 张贺迎; 王建平
Original assignee: Hebei University
Current assignee: Hebei University
Priority date: 1992-05-16
Filing date: 1992-05-16
Publication date: 1992-12-09

Abstract

The utility model relates to an oscillator used for a laboratory. An oscillating platform is supported on a base via a main shaft, and a crank rocker mechanism or a swing guide rod mechanism or a spring locking cam mechanism is taken as the angular displacement generator of the oscillating platform. When the oscillator works, the surface of the oscillating platform has amplitude graded distribution, and the oscillator can simultaneously provide experiment condition with different oscillating intensities.

Description

Mechanical oscillator

The utility model relates to a kind of mechnical oscillator, the oscillator that particularly a kind of laboratory is used.

In chemistry, biochemistry and the cell culture experiments, often sample need be placed on the oscillator, under oscillating condition, finish reaction.Existing oscillator is mainly taked two kinds of versions, and a kind of is centering type, and another kind is reciprocating type.The former displacement generating mechanism is by eccentric wheel that is connected with oscillating table of motor-driven, makes oscillating table do the centering type vibration, and the every bit on this moment oscillating table such as all makes at the eccentric throw circular motion.The latter's displacement generating mechanism is linked to each other with reciprocal connecting rod through bent axle by motor, drives oscillating table and does reciprocating type vibration, and the every bit of oscillating table is all done the reciprocating motion of constant amplitude at this moment.Because the oscillation amplitude of this oscillator is immutable in same experiment, cause some need understand the experiment of oscillation intensity to the specimen reaction influence, utilize existing oscillator to be difficult to be competent at, have to adopt many or test of many times to be finished in the real work.

The purpose of this utility model is a kind of improvement to oscillator structure, the oscillating table that makes oscillator has a kind of amplitude gradient when work distribution.

For realizing above-mentioned task, the utility model is done following the improvement to the supporting and the displacement generating mechanism thereof of oscillating table:

Oscillating table forms horizontal rotatable support through a main shaft and base, adopts a kind of swing type angular displacement generating mechanism to be connected with oscillating table, and it is the horizontal pendulum dynamic formula vibration in the center of circle that oscillating table is formed with described vertical shaft.

The following several modes of the optional usefulness of described swing type angular displacement generating mechanism: crank and rocker mechanism, oscillating guidebar mechanism, the sealed cam mechanism of spring or they be equal to mechanism.

Described crank and rocker mechanism, its rocking bar and oscillating table are connected, and are the swinging axle of rocking bar with the main shaft of oscillating table, and crank is by motor-driven.

Described oscillating guidebar mechanism is provided with slide bar or slide rail as guide rod on oscillating table, be the swinging axle of guide rod with the main shaft of oscillating table, and the slide block that frame is held on the slide rail is connected with a crank or eccentric wheel, and this bent axle or eccentric wheel are by motor-driven.

The sealed cam mechanism of described spring rolls with plane of oscillation on the oscillating table or swing and is its oscillating follower, a return spring connects oscillating table and base, make mechanism sealed, motor-driven disc cam be horizontally disposed be located at oscillating table on plane of oscillation or sway roller contact.

After adopting above-mentioned improvement, oscillator when work, its amplitude on the vibration table top, form with the main shaft be the utmost point at center to distribution, far away more from main shaft, amplitude is big more.Use the different poles that only needs sample is placed oscillating table to the position during practical application, can be in a whole set of experimental data that obtains on the table apparatus under the various amplitude condition.

With regard to accompanying drawing and embodiment the utility model is specified below.

Fig. 1 is existing centering type oscillator structure sketch.

Fig. 2 and Fig. 3 are the oscillator structure sketches that adopts crank and rocker mechanism.

Fig. 4 and Fig. 5 are the oscillator structure sketches that adopts oscillating guidebar mechanism.

Fig. 6 is the oscillator structure sketch that adopts the sealed cam mechanism of spring.

Fig. 1 shows a kind of typical centering type oscillator structure, oscillating table 1 is bearing on active eccentric shaft 2 and the driven eccentric shaft 3, initiatively eccentric wheel 4 is by the motor-driven (not shown), follower eccentric 5 is generally established two, to increase the supporting stability of oscillating table 1, initiatively with had identical eccentric throw and identical eccentric orientation setting by movable eccentric wheel 4,5.When active eccentric wheel 4 rotated, oscillating table 1 was done the centering type vibration, and the amplitude of each point is identical on the table top.

Fig. 2 is an embodiment of the present utility model, provides a kind of novel oscillator structure that adopts crank and rocker mechanism, and Fig. 3 is the mechanism principle figure of Fig. 2, and oscillating table 11 is bearing on the frame 13 through vertical shaft 12, and can rotate around vertical shaft 12.Rocking bar 14 1 end framves are held on the vertical shaft 12, the other end and connecting rod 15 are hinged, the other end of connecting rod 15 is connected with the eccentric shaft 17 of eccentric wheel 16, constitute a crank and rocker mechanism, rocking bar 14 is affixed with oscillating table 1, through belt drives, rocking bar 14 drive oscillating tables 1 are the swing of φ as argument to eccentric wheel 16 when eccentric wheel 16 is done crank-motion by motor 18.

Fig. 4 and Fig. 5 provide another embodiment, oscillator has adopted a guide-bar mechanism in this example, oscillating table 21 is bearing on the frame 23 through vertical shaft 22, slide rail 24 is located at the bottom of oscillating table 21, on the eccentric shaft 27 of eccentric wheel 25, be provided with slide block 26, this slide block 26 simultaneously again frame be held on the slide rail 24, can be reciprocating along slide rail 24, eccentric wheel 25 by motor 28 through belt drives, when eccentric wheel 25 rotates, slide rail 24 is that axle center swing as guide rod with vertical shaft 22 with oscillating table 21, and Fig. 5 is the A-A view of Fig. 4.The position is supported as one of oscillating table again simultaneously in the wobble drive position of oscillating table when adopting this programme.

Fig. 6 is the 3rd embodiment, oscillating table 31 is bearing on the frame 33 through vertical shaft 32 equally, a roller 34 is located at oscillating table 21 bottoms as the cam mechanism slave unit, spring 35 connects oscillating table 31 and frame 33, make roller 34 and disc cams 36 sealed, disc cams 36 rotates around camshaft 37, and oscillating table 31 is around vertical shaft 32 swings, and the spherical roller 38 that is provided with between frame 33 and the oscillating table 31 is as a kind of swinging mounting mode of oscillating table 31.

Also can adopt spring-loaded between oscillating table and the base, change the position (in the 3rd embodiment) of crank length (in above-mentioned first and second embodiment) or change vertical shaft, can change the oscillator intensity of complete machine.

Claims

1, a kind of mechnical oscillator is made up of oscillating table displacement generating device and base, it is characterized in that oscillating table is bearing on the base through vertical shaft, and the formation level is rotatably connected, and described displacement generating device is a swing type angular displacement generating mechanism.

2, by the described mechnical oscillator of claim 1, it is characterized in that described swing type angular displacement generating mechanism is a crank and rocker mechanism, rocking bar 14 is connected with oscillating table 11, and with the swinging axle of oscillating table supporting vertical shaft 12 as rocking bar 11, crank 16 is by motor-driven.

3, by the described mechnical oscillator of claim 1, it is characterized in that described swing type angular displacement generating mechanism is an oscillating guidebar mechanism, slide bar that oscillating table 21 is provided with or slide rail 24 are as guide rod, with oscillating table supporting spindle 22 is this guide rod swinging axle, the slide block 26 that frame is held on slide bar or the slide rail 24 is connected with crank 25,27, and this crank is by motor-driven.

4, by the described mechnical oscillator of claim 1, it is characterized in that described swing type angular displacement generating mechanism is the sealed cam mechanism of spring, rolling 34 with oscillating table 31 and the plane of oscillation that go up to be provided with thereof or swing is driven member, one is horizontally disposed with by motor-driven disc cam 36, back-moving spring 35 connects oscillating tables 31 and bases 33, and it is 34 sealed that cam 36 and swing are rolled.