CN2513112Y

CN2513112Y - Large distance high frequency sound speed sensor

Info

Publication number: CN2513112Y
Application number: CN 01263909
Authority: CN
Inventors: 王宝元
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-13
Filing date: 2001-09-13
Publication date: 2002-09-25
Anticipated expiration: 2011-09-13

Abstract

The utility model discloses a large distance high frequency sound speed sensor which is used for solving speed experiment detecting, aims at experimentally testing the speed of the automatic breech mechanism of the artillery and is an ideal sensor for testing the speed of the objects moving horizontally and in universal directions. Based on the working principle of a dynamo, the utility model does not need any spring. The horizontal movement of an object is changed into the revolving of a micro dynamo through two steel ropes which are pulled alternatively by the moving objects and then alternatively drive the dynamo to revolve so that the speed quantity of the moving object is changed into the voltage output by the dynamo. Hereby, the speed and changing principle of the moving object can be obtained through the voltage.

Description

Big stroke high frequency sound speed pickup

Technical field:

The utility model relates to a kind of big stroke high frequency sound speed pickup.Specifically, the utility model relates to the especially big stroke high-frequency of cannon moving component moving component velocity test sensor.

Background technology:

In order to improve the power of cannon, the modern cannon especially firing rate of antiaircraft gun is more and more higher, makes the speed of cannon moving component improve, and motion frequency increases, and it will bring adverse influence to fire accuracy, reliability and the cannon structural strength of cannon.How with the method for experiment test correctly, intactly obtain big stroke (being generally about 1 meter), movement velocity high-speed, the high-frequency moving component is the research topic that cannon circle very is concerned about for many years always, developing above-mentioned speed pickup also is the target that the cannon engineering technical personnel dream of.It is to revising the cannon structural design, and the cannon fault analysis improves artillery shooting precision and moving component reliability, shortens the cannon lead time, saves research fund and will produce positive facilitation.

At present, be used for the big stroke of cannon moving component, high-speed, high-frequency velocity test is mainly the steel wire knotmeter that has spring.It is to rely on generator principle to carry out velocity survey, and its course of work is for to be wound with the multi-turn wire rope in a rotating shaft, and an end and the rotating shaft of wire rope are fixed, and the other end links to each other with the cannon moving component.Simultaneously, be fixed with a rosette and a volute spring (being similar to clockwork feed) in the rotating shaft, be provided with two blocks of magnet around the rosette.When moving component pulling wire rope is outwards pulled out, force rotating shaft to be rotated, the volute spring in the rotating shaft tightens up and the storage elasticity energy.Simultaneously, the rosette in the rotating shaft rotates and cutting magnetic line, thereby produces induced electromotive force at disk diameter to two ends, and its size is directly proportional with the rotating shaft rotating speed.When moving component was return, the withdrawal of wire rope relied on the volute spring energy stored work in the rotating shaft fully.When moving component speed was regained speed greater than volute spring, the withdrawal speed of wire rope will be less than the movement velocity of moving component, and at this moment, velocity magnitude that this knotmeter obtains and rule thereof will distortions.When if spring rate is improper, this speed distortion degree can be more serious.Briefly, the major defect that has the steel wire knotmeter of spring is when wire rope is regained, if the moving component speed that links to each other with it is regained speed greater than spring, then speed record distortion, and the moving component frequency is when higher, it also can produce repeatedly HI high impact to wire rope, causes wire rope to be broken, and finally causes the velocity test failure.

Summary of the invention:

The purpose of this utility model is to propose a kind of velocity test sensor, solving the especially big stroke of antiaircraft gun of cannon, and the velocity test of high-speed, high-frequency moving component.

The purpose of this utility model realizes by following method and structure: in a thin-wall tubular structure, a rotor and a microgenerator, generator shaft and above-mentioned rotor coaxial are installed on the heart line therein.Be wound with two wire rope on rotor, an end of every wire rope and an end of rotor are fixed, and the other end of wire rope links to each other with moving object, and two wire rope are fixed on the two ends of rotor, and twine to the centre, and two wire rope are in epitrochanterian rotation direction unanimity.During velocity survey, moving object drives the wire rope motion, and wire rope forces rotor rotation, the work of rotor banding actuating miniature generator, and the microgenerator output voltage is directly proportional with rotor speed.Because wire rope winding of single layer on rotor so wire rope is a constant at epitrochanterian winding radius, can obtains the linear velocity of wire rope by rotor speed, thereby by measuring the microgenerator output voltage, just can obtain the linear velocity of moving object.

The difference of the maximum of the utility model and traditional sensors is that the related speed pickup of the utility model need not any spring, and is by the alternating movement of two wire rope, complete, correctly write down the velocity magnitude and the rule thereof of moving object.Two wire rope are separately fixed at the two ends of moving object, and when moving object during to the motion of direction, its drives steel cable (being called for short the A rope) motion, and this root wire rope drives rotor rotation, and rotor forces another root wire rope (being called for short the B rope) to twine thereon.When moving object when other direction moves, it drives B rope motion again, the B rope drives rotor rotation, rotor forces the A rope to twine thereon.Like this, when the moving object to-and-fro movement, it alternately drives two wire rope motions, and two wire rope alternately force rotor rotation, the final full velocity magnitude and the rule thereof of putting in order, correctly having write down moving object.

Because gun automata breechblock motion has big stroke, reaches characteristics such as high-frequency at a high speed, so the utility model is applied to the measurement of gun automata breechblock movement velocity and has clear superiority, it also is the ideal transducer of artillery recoil part recoil velocity and the velocity survey of any single-degree-of-freedom translational motion parts.

Description of drawings:

Accompanying drawing 1 is the utility model speed pickup structural drawing, and accompanying drawing 2 is the utility model speed measurement method synoptic diagram.

The utility model speed pickup is mainly by output signal line 1, microgenerator fixed mount 2, microgenerator 3, micro generation arbor 4, shaft coupling 5, armature spindle 6, rotor case 7, rotor 8, cover plate 9, armature spindle 10 and wire rope 11 are formed, and its structural drawing is seen shown in the accompanying drawing 1.

Embodiment:

Describe preferred embodiment of the utility model below with reference to the accompanying drawings in detail.

During the moving object velocity survey, press the method placement sensor shown in the accompanying drawing 2, between speed pickup 12 erecting frames and leading block group 15 erecting frames relative motion can not be arranged.When moving object 14 moves right, it drives wire rope 11 (sequence number 13 in A rope or the accompanying drawing 2) and outwards pulls out, the A rope drives rotor 8 and rotates, rotor 8 forces wire rope 11 (B rope) to twine on rotor again, when moving object 14 during to left movement, it drives the B rope again and outwards pulls out, and the B rope drives rotor 8 and rotates, and rotor 8 forces the A rope to twine on rotor.Like this, rotor surface just wire rope keep identical speed with moving object all the time.During rotor rotation, drive microgenerator 3 by shaft coupling 5 and rotate with speed, the microgenerator rotating speed is directly proportional with its output voltage.Like this, just can obtain the size and the Changing Pattern thereof of moving object movement velocity by record microgenerator output voltage.

Claims

1, a kind of by microgenerator, shaft coupling, rotor, the no spring large travel high-speed degree high frequency sound speed pickup that two wire rope and rotor case are formed, it is characterized in that: in a thin-wall tubular structure, one rotor and a microgenerator are installed on the heart line therein, generator shaft and above-mentioned rotor coaxial, on rotor, be wound with two wire rope, one end of every wire rope and an end of rotor are fixed, and the other end of wire rope links to each other with moving object, and two wire rope are fixed on the two ends of rotor, and to the centre winding, two wire rope are in epitrochanterian rotation direction unanimity.