CN2168245Y

CN2168245Y - Mechanical-vibrating detecting device

Info

Publication number: CN2168245Y
Application number: CN 92240560
Authority: CN
Inventors: 王林泽; 赵文礼
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-18
Filing date: 1992-12-18
Publication date: 1994-06-08
Anticipated expiration: 2002-12-18

Abstract

The utility model discloses a mechanical device used for measuring amount of vibration, composed of a spring whose one end is fixed on the housing of a device connected with a testing face and a vibrator connected with the other end of the spring. One end of the vibrator is arranged at one end of a lever, the other end of the lever is provided with a rack bar and is engaged with the input wheel of the transfer mechanism of a fixed shaft gear train, an indicating pointer is fixed on the driven wheel of the fixed shaft gear train, and a restoring spring is arranged on the transfer mechanism of the fixed shaft gear train.

Description

Mechanical-vibrating detecting device

The utility model relates to a kind of mechanical, is used for measuring vibrations, particularly the device of microvibration amplitude.

Existing vibration detection instrument is electric probe device.This quasi-instrument complex structure involves great expense, and owing to uses electric measurement can not be directly used in the occasion of requirement of explosion proof.Present stage, carry out vibration detection in inflammable and explosive production scene and still adopt range estimation or feel to realize that its accuracy of detection is low, labour intensity is big.China utility model patent CN87207362 discloses the mechanical vibration analyzer of putting counterweight on its of a kind of compote type, though this patent can be carried out the classification qualitative detection to vibration, but can't detect the quantitative value of vibration source vibration, its accuracy of detection is also lower, and this device effect when vertical vibration is detected is bad.

The purpose of this utility model provides and a kind ofly overcomes prior art and be not, can detect the quantitative value of vibration source vibration, and precision is higher, and need not the mechanical type vibration detection device of electricity consumption.

The purpose of this utility model realizes by following measure: form vibration transducer with the oscillator that the spring on the device case that an end is fixed in test surfaces links is connected with this spring other end.Oscillator acts on an end of lever, and the other end of lever is provided with tooth bar, and this tooth bar is meshed with the wheel for inputting of the test volume transmission mechanism that fixed shaft gear train is formed.On the engaged wheel of fixed shaft gear train, be fixed with the indication pointer.In fixed shaft gear train, also be provided with the recovery spring.

The also available following measure of the utility model realizes: promptly be fixed with two pointers can indicating big vibratory output and less vibration amount on two engaged wheels of described fixed shaft gear train respectively.

When the utility model was used for the detection of vertical vibration, its oscillator should be the vertical vibration oscillator; When being used for the detection level vibration, its oscillator should be the horizontal vibration oscillator.Two cover oscillator systems of vertical vibration and horizontal vibration also can be set and respectively by two fixed shaft gear trains that overlap oscillator system transmitting vibrations test volumes, to detect horizontal vibration and vertical vibration simultaneously respectively in a device.

The novel advantage of this reality is as follows:

1, full mechanical mechanism need not electric measuring system, therefore is applicable to the vibration survey of inflammable and explosive occasion;

But 2, both detection level vibrations, but detection of vertical vibration again;

3, detection limit shows with the simulation numeral, can provide the quantitative indication of vibration source vibration situation;

4, accuracy of detection is high, and in aftermentioned embodiment actual measurement, its precision has reached 1 μ m.

Accompanying drawing provides an embodiment of the present utility model, and wherein Fig. 1 is the example structure signal; Fig. 2 is another kind of lever set-up mode signal of the present utility model.

Embodiment 1,

(referring to Fig. 1) in an embodiment, fixing extension spring 1 on the shell 14 that links with test surfaces 13, it is the vertical vibration oscillator that the other end of spring 1 is hanging weight 2(), weight 2 acts on an end of lever 3, and set tooth bar 15 is meshed with the input gear 4 of fixed shaft gear train on the other end of lever 3.Be fixed with coaxial gear wheel 5 on the gear 4.Gear 5 and follower gear 6 engagements, be fixed with the pointer 9 that is used to indicate the less vibration amount on the follower gear 6, and gear 6 and another follower gear 7 engagements, it is to use hairspring that gear 7 is provided with in the recovery spring 8(concrete structure), and fixing the pointer 10 of indication than big vibratory output.In use the resonance effect of weight 2 amplifies vibratory output on lever 3 simultaneously, acts on gear 4 and 5 and 6 through tooth bar 15.Because the number of teeth of gear 6 causes amount of spin to be exaggerated, and shows by the amount of spin of pointer 9 less than the gear of gear 5.Gear 6 drives again than gear wheel 7 and rotates, because the decelerating effect of wheel 6,7 makes the pointer 10 that is fixed on the wheel 7 produce the rotation little than 9 corner, when pointer 10 underlying high range dishes, promptly available pointer 10 demonstrates bigger vibratory output.Return to initial position even after outer vibration is removed, recover spring 8 pointers 9 and 10.In fact when weight 2 resonance, spring 8 also acts on pointer 9 and 10, makes it provide the quantitative indication of harmonic motion amplitude.11 is the indicating graduation dish among Fig. 1.Its accuracy of detection reaches 1 μ m when adopting the present embodiment actual measurement.If its accuracy of detection also can be higher when the fixed shaft gear train ratio of gear was bigger.

The structure of lever 3 also can be shown structure as Fig. 2, even weight 2 effect ends are positioned at the opposite side (with tooth bar 15 homonymies) of pivot 12.This can make, and 1 apparatus structure is compacter, volume is littler.But must notice that at this moment recovering spring 8 should commutate.

Embodiment 2,

Present embodiment is that spring one end is fixing on housing, and the other end is connected with the horizontal vibration oscillator, and oscillator described here is one the weight of certain mass to be arranged, and its quality size is determined by detection case.Oscillator is placed on a guide rail level and smooth or the guide groove.Best structure is to place ball in the guide groove bottom, and oscillator is placed on the ball; Perhaps under oscillator, roller is installed, is put roller in the guide groove or on the guide rail.Make oscillator act on lever one end.All the other structures of present embodiment are all similar to Fig. 1 situation.

Embodiment 3,

This example is that

embodiment

1 and 2 described two cover mechanisms are installed respectively in same device.Present embodiment can detect the quantitative value of vertical vibration and horizontal vibration simultaneously.

Claims

1, the device that is used for the measurement mechanical vibratory output, form by vibrating sensing mechanism and indicating mechanism, it is characterized in that sensing mechanism is made up of with the oscillator that this spring other end is connected the spring on the device case that an end is fixed in test surfaces links, described oscillator is made in an end of lever, the lever other end is provided with tooth bar and is meshed with the wheel for inputting of fixed shaft gear train transmission mechanism, be fixed with the indication pointer on the engaged wheel of described fixed shaft gear train, also be provided with the recovery spring on the fixed shaft gear train transmission mechanism.

2, device according to claim 1 is characterized in that fixing respectively on two engaged wheels of fixed shaft gear train two pointers can indicating big vibratory output and less vibration amount.

3, device according to claim 1 and 2 is characterized in that described oscillator is the vertical vibration oscillator.

4, device according to claim 1 and 2 is characterized in that described oscillator is the horizontal vibration oscillator.

5, device according to claim 1 and 2, it is characterized in that being provided with in the device two cover vibrating sensing mechanisms and overlap the fixed shaft gear train transmission mechanisms by two of two cover vibrating sensing mechanism transmitting vibrations test volumes respectively, wherein the oscillator in the vibrating sensing mechanism of a cover is the vertical vibration oscillator, and the oscillator in the another set of vibrating sensing mechanism is the horizontal vibration oscillator.