CN2041815U - Multifunction "ge shi" pendulum - Google Patents

Abstract

The utility model provides a multifunctional 'Ge Shi' pendulum, belonging to the category of physical testing apparatus. In particular, the utility model is an inverted-hang type 'Ge Shi' pendulum which is used to measure the relaxation parameter of materials. The multifunctional 'Ge Shi' pendulum is characterized in that a fulcrum centring device, an automatic dial-up mechanism, an exciter position adjustment device, etc. are additionally arranged. The multifunctional 'Ge Shi' pendulum has various functions of measuring the internal friction, the resistor, and the difference thermoelectric force of the material. The utility model produces a vacuum physical environment with magnetic field and controllable temperature, and can also be used for vacuum and magnetic heat treatment or deep cooling.

Description

Multifunction "Ge Shi" pendulum

The utility model belongs to physical testing instrument category, specifically, is a kind of reversely hung Yong Ge Shi pendulum that material relaxation parameter is used of measuring.

Taught since first of initiative in 1947 rock the in-fighting instrument since Pueraria lobota front yard flint, in-fighting research has obtained development rapidly, and various improvement are novel also to be occurred in succession, wherein mainly contains the type of falling the pendulum, frequency conversion type etc.The utility model belongs to novel and falls to put, and the ultimate principle that Ge Shi puts is all deferred in the shape of its survey frequency scope, sample and the method for torsional deformation and optical lever measurement etc.

Yet, when it does analysis means with in-fighting, instrument is just had higher requirement along with some special material (as: magnetic, superconduction, stupalith) progress of research.For this this device at first is conceived to make the specific physical environment in a vacuum, magnetic field, temperature field, in this environment, is provided with torsional pendulum device again, and sets up some auxiliary bodies at the special requirement in the research.When changing suitable parts, but measuring resistance or differential thermoelectrical potential, and this has just increased function than rocking the relaxation parameter that only can measure material usually.

Based on above-mentioned invention thought, now designed multi-functional Ge Shi pendulum, and in the laboratory, implemented, now further specify in conjunction with model machine:

Accompanying drawing 1 is expressed the outward appearance of this instrument---tower hierarchy, and it is made up of vacuum system, vibration damping base and elevating mechanism three parts, and 1 details are as follows in conjunction with the accompanying drawings:

The 01st, protective cover is made by light metal or wire netting; The 02nd, glass bell jar, selecting dome head and garden post profile for use is can bear bigger atmospheric pressure for it; The 03rd, O-ring seal, it plays the sealing function between bell jar and base plate (04); 05 also is the vacuum rubber circle, and it is between main connection chamber 06 and base plate; 07 is four plating pillars, plays supporting baseplate (04); 08 is main view window, is made up of optical glass and flange, and the two sides of glass is all with rubber band sealing, like this can the cover glass pressurized is not broken can not seal again; 09 is special sealed insulation lead wire outlet, but is made of pottery and valve alloy; 010 for following instrumentation tubes and ring flange, strikes up partnership with argon arc welding; 011 is water collar, the top of cooling work pipe, and the protection instrumentation tubes is with upper-part.Instrumentation tubes is made by austenite heat-resistance stainless steel; 012 is pole, with nut pole and middle base plate 013 is tightened together; The 014th, the nut of horizontal adjustment, it is welded on the middle base plate 013; 015 is adjusting screw(rod), floor level in being used for regulating; 016 for decorating table top; 017 for there being the seat that bears of spherical concave surface, and the lower end is embedded in the thick rubber gasket 019, and like this, middle base plate has just become an isolated body with upper-part with base.The 020th, vibration damping sand is contained in the base tube 032.The 021st, bearing fixing sleeve, it is to be welded on the framework of base.The 022nd, bearing; The 023rd, the main transmission bar, on acme thread is arranged; The 024th, coil winding is made up of five groups of cheese lopping; The 025th, transmission nut; The 026th, pallet can bear weight below 150 kilograms; The 027th, gusset plate; The 028th, lifting motor rotates the main transmission bar by worm screw, worm gear (029); The 030th, support, the 031st, cover plate; The 033rd, lower bearing sleeve, in establish bearing (034), fastening cap (035) is fixed on bearing holder (housing, cover) on the base channel-section steel (036), in the same way, guide pole (039) is fixed on another channel-section steel by axle sleeve (038) and fastening cap (037).

141～145 form orienting sleeve, guarantee being enclosed within on the instrumentation tubes of field coil exactly.Wherein 141 is the garden ring-shaped jacket, and uniform three bearing poles (142) in overcoat are fixed three bearings (143) on the pole, and the outer garden and the guide pole of bearing are tangent.144 are three adjusts bolt, is used for adjusting the gap between bearing and guide pole, and the 145th, oil duct.140 is diffusion pump, and its upper end links to each other with vacuum pipe 146, and the other end links to each other with mechanical pump.The capacity of used mechanical pump and diffusion pump (JK100 type) are complementary.The diameter of vacuum pipe must with raising conducting coefficient, and shorten pipeline length greater than the diameter of instrumentation tubes as far as possible under the condition of space permission.147 is carrier base, and it and pipeline pole (149) and arc bear the supporting role that cover (150) plays pipeline, and 148 for corrugated tube, vacuum line (151,146) have this to be flexible coupling, and could guarantee other rigid seal.

Accompanying drawing 2 is inner structure synoptic diagram of instrument.

Its core is the hang spring on pulley (053, the 054) groove that is laid in, the tangent back of hang spring and pulley is passed through a pintongs chuck (074) and a garden cylindricality downwards, the damping cage (072) that the side major part is hollowed out joins, 073 is that the nut that has tapering is used for clamping and unclamping hang spring, the 070th, the following T-shaped bar of damping cage, it partly is a thick garden sheet in the damping cage, stretches out a mast from the center of garden sheet and is made by a garden bar turning; To guarantee the symmetry in its when rotation.The lower end of following T-shaped bar is connected with central cross frame (069).The 071st, the damping cup, cup-shaped, interior dress damping oil, oil immersion there is not the central shaft some of the last T-shaped bar in the damping cage, plays damping action, and the damping cup drops on by cover inner supporting rod (062) and stretches out, and can do on the flexible chain-wales of reconciling.Garden shape chain-wales under the damping cup is to pass hollowing out partly of damping cage by a slice bar to finish with the connection of cover inner supporting rod (062).The damping cup sits in and covers on the platform that inner supporting rod is connected to a fixed like this, and it is motionless during the sample torsional oscillation.The 069th, the central cross frame, its horizontal direction with two on have the yaw bar (086) of enamel sign indicating number to link to each other, central cross frame lower end is being connected drive link perpendicularly with the yaw bar, drive link inserts in the central cross frame, use screw fastening then, the lower end of drive link has entered the constant temperature zone of heating furnace (079), joins by chuck and sample (080).The lower end of sample is fixed on the interior pipe of heating furnace by same chuck.Hang spring joins with balance bob (060) by behind the pulley.Its ways of connecting clamps dop with pintongs equally and finishes.The weight of balance bob with from the pulley of the other end downwards all parts gross weights equate.The 088th, the torsional oscillation energizer of pendulum, it is made up of two couples of Helmholtz (Helmholtz) coil.The 078th, prevent the reflecting drum of heating furnace radiation loss.The 077th, outer water collar links to each other with the circulation system of water with flexible rubber hose.The 058th, the nut of center pit is arranged, horizontal platen (059) and cover inner supporting rod (062) are tightened together.The 065th, base sheath, it is fixed on the base plate (04), fastening cover inner supporting rod (062) in the cover.Clamp device is by overcoat (063), and three hug pawl (066), little garden post (067) and approach plate (068) and form.Approach plate and be provided with asymptotic curved groove, little garden post along curved groove slide, rotary sleeve (063) makes little garden post move along curve, so three with little garden post welded together hold inwardly contraction or outwards unclamp of pawl tightly.Reach when changing sample, protection central upper portion system is motionless, avoids operating influence.

Below this novel principal character of more definite description and the advantage brought, be described below item by item in further detail:

1, the fixed pulley (053,054) that plays the hang spring point action is fixed on a lower end has on the pulley yoke of dovetail (055), and accompanying drawing 3 is three-face views of the pulley yoke of this band dovetail.Following accompanying drawing 4 is three-view diagrams of middle level sliding bottom.It and pulley yoke are slidingly matched.The middle level sliding bottom is provided with dovetail groove and and perpendicular another dovetail of this groove.Accompanying drawing 5 is three-face views of lower floor's dovetail groove; The dovetail of middle level sliding bottom and lower floor's dovetail groove are slidingly matched.Like this, by the folded two-way dovetail slide mechanism that has constituted horizontal quadrature together that drops on of pulley yoke, middle level sliding bottom and lower floor's dovetail groove, two-layer dovetail sliding type identical (but glide direction is orthogonal), all use knurling handle (057) driven rotary screw rod (056) rotation, the promotion dovetail advances, having compressed the spring in the spring eye simultaneously, is to lean on the screen resilience of spring to force dovetail to slide when returning.This mechanism has been arranged, and behind the dress sample, the fulcrum of hang spring is fine-tuning twice on its plane, place, is convenient to centering.

2, it is inside and outside to draw the connection chamber of the view window (08) of sample torsional vibration signals and the square that inner small reflector (075) is separately positioned on the bell jar below, and to fall ornaments usually inside and outside at bell jar and do not resemble.Because the volume ratio bell jar of connection chamber is little, thereby has shortened the distance of little mirror to window glass, has improved the range ability of windup-degree.

3, set up dial-up mechanism, this mechanism can make symmetrical the moving on the yaw bar of enamel sign indicating number, even when needed, can dial most of enamel sign indicating number, has also promptly changed the moment of inertia of total system.Thereby reach the purpose that changes frequency.This mechanism is simple, and only by little reversible electric machine (081), left rotation and right rotation screw rod (082), parts such as screw rod axle sleeve, square tube shell, nut slider, shift fork, support are formed.Accompanying drawing 6 is square tube shell mechanism synoptic diagram; Accompanying drawing 7 is screw shaft nested structure synoptic diagram; Accompanying drawing 8 is motor fixing frames; Accompanying drawing 9 revolves the structural representation of screw rod about being; Accompanying drawing 10 is nut slider structural representations; Accompanying drawing 11 is structural representations of shift fork.The internal thread that revolves about two nut sliders have respectively as shown in drawings, symmetry be installed in one have with the center be the boundary about revolve on the screw rod of screw thread (seeing accompanying drawing 9).Revolve screw rod (082) about being called with this.Revolve the two ends of screw rod and its axle sleeve (accompanying drawing 7) about this root movingly, the screw rod axle sleeve is fixed on the two ends of square tube shell, the transversal section of square tube shell is shape (accompanying drawing 6), the side fluting of square tube shell, draw the shift fork (083) that is fixed on the nut slider by the notch place, the internal orifice of nut slider (accompanying drawing 10) and square tube shell is slidingly matched, little reversible electric machine main shaft with about revolve screw rod and link, and be fixed on the square tube shell by motor fixing frame (accompanying drawing 8).The lower end jag of shift fork (083), the enamel sign indicating number places in the middle of the shift fork, and the square tube shell is fixed on the support, and support is fixed on the rotating disk.There has been this mechanism to give not destroy vacuum measurement sample " activation energy " the value condition that offers convenience.

4, set up the energizer position regulator, energizer (088) is made up of Helmholtz coils, four such coil winding, relative in twos, its gap is certain, for the torsional oscillation amplitude of yaw bar to greatest extent, when yaw bar (086) is not that the maximum possible of the amplitude that rocks will be dwindled when being positioned at two coils central authorities.Off-center is many more, and amplitude range is more little, and in fact when sample is heated, because the change of temperature can make the yaw bar leave original equilibrium position, produces so-called " zero drift " phenomenon (situation is opposite during the sample cooling).In order to overcome yaw bar departing from respect to the Helmholtz coils center, the utility model is not fixed on the base plate not resembling energizer (088) usually, but be fixed on the rotating disk (064), rotating disk is a thick disk, it is embedded in outer the putting of a bearing (089), the interior cover of bearing is fixed on the pipe (090), and the axis of pipe overlaps with the center of pendulum mass, the center pit stationary fit of the lower end of pipe and base plate (04).The outer rim rubber sleeve of rotating disk to increase the friction of it and little reversible electric machine between centers, drives dial rotation by the little reversible electric machine of friction gearing.So just can outside vacuum chamber, adjust the position of yaw bar and energizer at any time.

5, five groups of field coil windings (024) have been set up, it can slide up and down at the peripheral space near the sample chamber, coil winding is placed on the pallet (026) of an elevating mechanism, and elevating mechanism is made up of pallet (026), main transmission bar (023), guide pole (039), pulley (029), transmission nut (025), orienting sleeve (141～145) etc.The two ends of pallet are separately fixed on orienting sleeve and the transmission nut, and orienting sleeve is through on the guide pole and trackslips with it and cooperates, and transmission nut and main transmission bar match, guide pole up and down two ends by bearing fixing on two channel-section steels of support.Transmission nut is connected by worm gear, worm screw and lifting motor.

Lifting field coil winding has been arranged, can apply saturation magnetic field to magnetic magnetic sample, thereby fixed the magnetic domain in the sample, this has just eliminated " background loss " that is caused by magnetic domain, has reduced the background that in-fighting is measured.Simultaneously on the other hand, can use magnetic field intensity, frequency etc. is independent variable, is the research that variable carries out magnetic relaxation with relaxation parameters such as in-fightings still.

Claims (2)

1, a kind ofly measuring the reversely hung Yong Ge Shi pendulum that the material relaxation parameter uses, mainly is to be made of parts such as the small reflector of the fixed pulley that plays point action, hang spring, damper yaw bar, enamel sign indicating number, drive link, heating furnace, sample chuck, response sample vibration and view windows.It is characterized in that:

(1) fixed pulley that plays the hang spring point action is fixed on the two-way dovetail slide mechanism of horizontal quadrature;

(2) small reflector of response sample torsional vibration signals and the view window of drawing are located on the connection chamber of bell jar below;

(3) dial-up mechanism is by little reversible electric machine, about revolve screw rod, the screw rod axle sleeve, the square tube shell, nut slider, shift fork, parts such as support are formed, the internal thread that revolves about two nut sliders have respectively, symmetry is installed in one, and to have with the center be the left side on boundary, on the screw rod of right-hand thread, revolve the two ends of screw rod and its axle sleeve about this root movingly, the screw rod axle sleeve is fixed on the two ends that the transversal section is the square tube shell of shape, the side fluting of square tube shell, draw the shift fork that is fixed on the nut slider by the notch place, the internal orifice of nut slider and square tube shell is slidingly matched, micromotor main shaft and screw rod link, micromotor is fixed on the square tube shell by support, shift fork lower end jag, enamel sign indicating number place in the middle of the jag of shift fork lower end, and the square tube shell is fixed on the support, support is fixed on the rotating disk

(4) energizer is fixed on the rotating disk, and rotating disk is inlayed and is fixed on the bearing outside, and this bearing inner sleeve is fixed on the pipe with the bottom center hole stationary fit, and rotating disk links to each other with micromotor by gearing;

(5) one field coil windings are positioned on the pallet of below, periphery, sample chamber, the two ends of pallet are separately fixed on orienting sleeve and the transmission nut, orienting sleeve is through on the guide pole and with it and is slidingly matched, transmission nut matches with the main transmission bar, the guide pole upper/lower terminal is separately fixed on two channel-section steels of support, on two channel-section steels of support, transmission nut links by turbine worm and lifting motor main transmission bar upper/lower terminal by bearing fixing.

2,, it is characterized in that employed field coil winding has 4～5 groups in the Ge Shi pendulum according to the said reversely hung Yong Pueraria lobota of claim 1 formula pendulum.

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