CN2881580Y - Calibrating device of negatire step dynamic torgue - Google Patents

Abstract

A calibrating device of negative step dynamic torque is mainly used to solve the technology problems such as generating good signal. The technical plan of this device is that a cylinder component is provided on the torque generator, and the cylinder component is composed of a piston, a cylinder, an air container and a link shank. Wherein, a cable going around the torque wall is connected to the piston, the two ends of the link shank are connected to an armature magnet and the piston respectively. Meanwhile, the inner cavity of the cylinder communicates with the inner cavity of the air container. This device is suitable for all kinds of calibrating of negative step dynamic torque.

Description

Negative valence jump dynamic torsion corrector

Technical field:

The utility model relates to a kind of calibration that is used to measure the torque instrument, particularly a kind of calibrating installation that is used to measure the torque instrument.

Background technology:

In some power systems, especially in the power system of delivery vehicle, need carry out down ahead running, brake hard, startup fast, acceleration suddenly or deceleration or the like unstable state operating mode continually, and produce very big dynamic load thereupon, to bear great instantaneous torque peak value on the driving member this moment, deviser or operator as equipment feel unsure of to this size of data, just may cause serious overload, the damage of equipment even cause a serious accident; Existing equipment all be provided with the torque gauge of measuring moment of torsion in some important occasions, but the torque sensor of these torque gauges can only be measured the torque value under the normality, and can't accurately and timely reflect the size of dynamic torque peak value; For this reason, in needs were sought knowledge the power system of dynamic torque peak value, the torque sensor of its equipment must be grasped the dynamic perfromance of torque sensor earlier, promptly knows its natural frequency and damping ratio, to satisfy the frequency response of power system moment of torsion; But, so far the torque sensor of producing does not both at home and abroad all have this correct dynamic Characteristic Data, but calculate by mathematical modeling, even calculate with software emulation, institute's value degree of confidence is not high yet, because these calculating are influenced by complicated environmental condition all, especially be subjected to the influence of torque sensor self damping, therefore, the dealer provides the negative valence jump dynamic torsion corrector of various types, as a kind of a small amount of journey negative valence jump dynamic torsion corrector, the frame of device is provided with the moment of torsion pier, compositions such as moment of torsion wall and negative step generator, the input end of moment of torsion pier upper sensor is connected with finer wire, finer wire is connected with the counterweight of bearing step generator through the slide guide wheel of moment of torsion wall, during calibration operation, cut off the finer wire of diameter  below 1 millimeter with scissors, the suspension counterweight falls, applying load on the test specimen of calibration discharges suddenly, allow it do decay harmonic oscillation, and in automatic control system, show, gather, handle, the verificating sensor dynamic perfromance realizes its calibration function, but, this device oscillogram show negative edge cut off constantly rough, if counterweight increases the weight of, must increase steel wire diameter, then cut off difficulty, can't guarantee the time of Millisecond negative edge, its application is restricted, equally in a small amount of journey section, its technical scheme is with hammering hard brittle material (glass bar), replaces cutting off, and makes to hang the counterweight whereabouts, its oscillogram shows that the waveform that descends is poorer, and it is limited equally to use range; Another technical scheme is the device that utilizes shock tube to form, and generally could stablize at 10 milliseconds of left and right sides plateau pressures, and its poor accuracy is about 6%; The negative step pressure generator of the quick-opening valve device that U.S. BRL provides, its maximum step pressure reaches 1000MPa, but its rise time still long (being the millisecond magnitude), in addition, its force value is high, device must possess the good condition that high pressure resistant and high pressure resistant sealing are arranged, thereby makes the making of device and use cost all very high, is difficult to promote the use of.

The utility model content:

Technical problem to be solved in the utility model is, a kind of improved negative valence jump dynamic torsion corrector is provided, and it can produce good negative step signal index, and this signal has normalizing, and apparatus structure is simple and can adapt to relatively large journey scope.

The technical scheme that the utility model addresses the above problem employing is: negative valence jump dynamic torsion corrector includes frame, the moment of torsion pier, three-dimensional working platform, torque generator, assemblies such as moment of torsion wall, each composition all is arranged on the frame, moment of torsion pier and three-dimensional working platform are provided with test block, the torque input end of test block is connected with rope, rope pile warp moment of torsion wall is connected with negative step dynamic torque generator, torque generator includes to hang and weighs, be characterized in that torque generator is provided with a cylinder assembly, cylinder assembly includes piston, cylinder body, gas-holder and connecting link, the piston of cylinder assembly is connected with the rope of pile warp moment of torsion wall, connecting link two ends of cylinder assembly are connected with armature and piston respectively, and the inner chamber of cylinder block of cylinder assembly and the inner chamber of gas-holder are communicated with.Device is hung under heavy (and chest expander) effect, with armature, connecting link, the piston of adhesive, be wire-wrapped in the rope of moment of torsion wall, act on test block to set torque value, calibration operation cuts off coil power, armature discharges to hang and heavily reaches loading, and piston quickens to rise under the pressed gas effect, and rope is loose fast, test specimen is made free vibration attenuation under no extraneous damping state, thereby realizes its calibration function in control system.

The moment of torsion wall adopts one group of rope that is parallel to each other and the combination of slide guide wheel, thereby test block is applied the negative step signal of pure torsion; Adopt and hang reorganization part and deceleration chest expander, range extension.

The technical scheme that the utility model adopts electromagnetism adhesive disconnection and cylinder fast discharging structure to combine, improve negative step moment of torsion high and steep intensity on foot greatly, thereby between the decline of dynamic characteristic time-delay less than 5 milliseconds, practical application is simple to operate, produce the signal normalizing, good reproducibility, its pure torsion load mode, reduce crooked influence, the utility model can provide necessary measured data for power system Dynamic Property Design or operation, improves the reliability and the operability of equipment, and whole process is not damaged parts and can be used repeatedly, do not adopt high voltage device, equipment cost is not high, and use cost is lower, thereby makes device have good economy.

Description of drawings:

Fig. 1 is the negative valence jump dynamic torsion corrector synoptic diagram.

Fig. 2 is that the torque generator vertical profile is looked synoptic diagram among Fig. 1.

Fig. 3 is an A-A cross-sectional schematic among Fig. 1.

Fig. 4 is a cylinder assembly part enlarged diagram among Fig. 2.

Fig. 5 be among Fig. 1 on the moment of torsion wall rope and slide guide wheel lay synoptic diagram.

Embodiment:

With reference to Fig. 1, negative valence jump dynamic torsion corrector includes frame 1, moment of torsion pier 2, three-dimensional working platform 3, test block 4, negative step start building attitude torque generator 5 and moment of torsion wall 6, and each ingredient all is arranged on the frame 1.

Frame 1 is hardware, is provided with corresponding each supporting frame of forming, is laid with the guide rail that can supply moment of torsion wall 6 to move on the plate face of top mounting torque wall 6; Be laid with the guide rail and the corresponding setting that hoists that can supply torque generator 6 to move at bottom mounting torque generator 5 places.

Moment of torsion pier 2 is members that test specimen is installed, and its structure is provided with ring flange at four faces, tests its dynamic perfromance to adapt to different test specimens, makes calibrating installation have good versatility.

Three-dimensional working platform 3, shaft extension 32 by an adjustable worm gear case 31 holds a pallet 33, and pallet 33 is provided with supporting member 34 and holds test block 4 (as shown in Figure 3), can float holder to test block 4, promptly its case weight is floated holder, reduce the influence of case weight test value.

Negative step dynamic torque generator (torque generator 5) includes output terminal 50, little electromagnet 51, cylinder assembly 52, limiting plate 53, armature 54, hangs reorganization part 55, chest expander 56, support 57;

Output terminal 50, as shown in Figure 5, output terminal 50 includes cross-under 500, housing 501, cock 502, transmission rod 503, cross-under 500 and is fixedly arranged on housing 501 tops, wherein be provided with through hole in order to the rope 61 of cross-under from moment of torsion wall 6, be installed with a cock 502 in the housing 501, can be in order to regulate output terminal 50 to the distance between the piston 521 of cylinder assembly 52, cock 502 is fixed in an end of transmission rod 503, and the other end of transmission rod 503 passes little electromagnet 51 and can be rotated with at piston 521 bottom screws 5210 (as Fig. 4);

Little electromagnet 51, this assembly comprises copper coin 511, magnet 512, cushion pad 513, and magnet 512 is in running order always, when discharging armature 54, piston 521 rushes at magnet 512, it is up that its electromagnetic field suction helps piston 521, and after the two was inhaled mutually, rope 61 no longer was subjected to the air pressure influence of fluctuations, favourable calibration detects, copper coin 511 tool function of shielding, cushion pad 513 can reduce the impact of 521 pairs of magnet 512 of piston, and three assemblies all are installed in a top of the trellis ringwise;

Cylinder assembly 52 as Fig. 1,2,3,4, includes piston 521, cylinder body 522, gas-holder 523, connecting link 524, wherein:

Piston 521, cup-shaped, the top flange limit is established the through hole slip cap and is combined in connecting link 524, and piston 521 is contained in to be in the cylinder body 522 and is slidingly matched, and top projection one projection in bottom is established screw 5210 and is spun in order to the transmission rod 503 with output terminal 50 in the projection;

Cylinder body 522 is a flanged (FLGD) cylindrical shell, and the working chamber that the piston 521 of rushing to summit is made acceleration movement is formed jointly on its inner chamber and piston 521 and bottom, and its end flange and gas-holder 523 are fixing;

Gas-holder 523, be the flanged (FLGD) cylindrical shells in two ends, the affixed cylinder body 52 in upper end, the lower end is fixed in support 57, and jar inner chamber and cylinder body 522 inner chambers are communicated with, and a jar side is provided with pipe adapter, pressure air enters the jar inner chamber of sealing through joint from the air feed place, the volume ratio of cylinder body 522 inner chambers and gas-holder 523 inner chambers is 1: 8 to 1: 12, and a jar inner chamber wears connecting link 524 places and is provided with sealing bushing pipe 5230, and keeps this bar to move in bushing pipe 5230;

Connecting link 524, the bar upper end is spherical in shape, with the common spherical hinge syndeton 525 that forms of the through hole of piston 521 top flange, connecting link 524 is extended through cylinder body 522, sealing bushing pipe 5230, limiting plate 53 and armature 54 and spins fixingly, and it is reciprocating that connecting link 524 can drive armature;

Limiting plate 53 is tabular bodys, is fixed on the support 57, in order to limit the Top Runby of armature 54;

Armature 54 is tabular, when solenoid 551 (as Fig. 3) is switched on, armature 54 downward adhesives, and move down through connecting link 524 pulling pistons 521, during outage, armature 54 discharges, and piston 521 is moving in the acceleration under the pressure air effect, and moves on connecting link 524 drive armature 54;

Hang reorganization part 55, include solenoid 551, hang heavy (552,553), buffer board 554, baffle plate 555 and buffering spring 556, wherein solenoid is set in to hang and weighs on 552, hang shown in heavy by 552,553 Fig. 2,3 and form, be arranged to combined type, also can form by polylith for the demand of adaptive testing part different size by two, be solidly fixed with bolt, hang heavy bottom for every and be equipped with the connection screw 550 that can connect chest expander 56; Buffer board 554 is made by rubber or similar material sheet material, in order to reduce to hang the impact of heavy 552,553 pairs of baffle plates 555; Baffle plate 555 is a sheet metal, hangs the heavily heavy duty of whereabouts in order to supporting, and baffle plate 555 slides on the guide rod of support 57, and its below is provided with buffer spring 556;

Chest expander 56, can adopt the worm gear reducer mode, its screw rod goes out end and is provided with output terminal 563 (as Fig. 2), output terminal 563 is connected with a drag-line 562, be installed with a joint 561 on the drag-line 562, joint 561 can revolve to be located to hang and weigh 552 or 553 connection screw 550, and chest expander 56 can be adjusted its value of thrust according to the demand of calibration operation.

Moment of torsion wall 6 includes wall frame 60, rope 61, slide guide wheel 62,63,64,65, as Fig. 5;

Wall frame 60 is the angle bar shape, and its bottom is provided with guide wheel group and can does to move relative to the direction of test block 4 along the guide rail of frame 1;

Rope 61, can be stone dead wire, soft nylon ropes, like alanine rope of fabric or other similar ropes of spider silk, rope 61 1 ends connect the contact 41 of test block 4, its other end is connected in another contact 42 of test block 4, and each slide guide wheel 62,63,65,64 of pile warp respectively, wherein between the pile warp slide guide wheel 63,65 through hole that is connected to the cross-under 500 of torque generator 5 output terminals 50;

Slide guide wheel 62,63,64,65, form by pulley and wheel shaft, pulley and wheel shaft are the rolling contact type sliding contact, wheel shaft is to be installed on the wall frame 60, the characteristics of its installation position are: rope 61 trends between contact 41 and the slide guide wheel 62, and 61 trends of the rope between contact 42 and the slide guide wheel 64 are parallel to each other, and form the negative step signal of the pure torsion that puts on test block; Cross-under 500 through hole to the rope 61 of slide guide wheel 63,65 is isometric symmetry, forms and evenly forces in test block.

Negative step signal production process is: continuous charged pressure gas in the gas-holder 523, solenoid 551 energisings, adhesive armature 54, through connecting link 524, piston 521, transmission rod 503, output terminal 50, rope 61 forces in test block 4, the corresponding force value is the weight of hanging reorganization part 55, restart chest expander 56, and through drag-line 562, hanging reorganization part 55 continues to test block 4 application of forces, the pure torsion value that realizes its application of force is adjustable, and is required to adapt to various tested objects, after reaching the setting torque value, cut off solenoid 551 power supplys, armature 54 is released, and under the pressed gas effect, piston 521 can reach 26g (g=9.8 meter per second ²) acceleration rise, promptly make rope 61 loose with the existing equipment acceleration that is beyond one's reach, test block is made free vibration attenuation under no extraneous damping state, realize bearing the generation of step signal.

The utility model can provide necessary measured data for the power system Dynamic Property Design, can provide the accurate dynamic performance data for automatic control system, can improve the dynamic performance index of power system, the parameter designing of automation control system be can improve and to the real-time control of system, thereby the reliability and the operability of power-equipment obviously improved.

Claims (7)

1, a kind of negative valence jump dynamic torsion corrector, this device includes frame, moment of torsion pier, three-dimensional working platform, torque generator, moment of torsion wall, each ingredient all is arranged on the frame, moment of torsion pier and three-dimensional working platform are provided with test block, the torque input end of test block is connected with rope, rope pile warp moment of torsion wall is connected with negative step dynamic torque generator, and torque generator includes to hang and weighs, and it is characterized in that:

A. torque generator (5) is provided with a cylinder assembly (52), and cylinder assembly (52) includes piston (521), cylinder body (522), gas-holder (523) and connecting link (524);

B. be connected with the rope (61) of pile warp moment of torsion wall (6) on the piston (521) of cylinder assembly (52);

C. connecting link (524) two ends of cylinder assembly (52) are connected with armature (54) and piston (521) respectively;

D. the inner chamber of cylinder body (522) inner chamber of cylinder assembly (52) and gas-holder (523) is communicated with.

2, negative step attitude torsion calibration device according to claim 1 is characterized in that cylinder body (522) inner chamber of cylinder assembly (52) and the volume ratio of gas-holder (523) inner chamber are 1: 8 to 1: 12.

3, negative valence jump dynamic torsion corrector according to claim 1 is characterized in that being provided with a little electromagnet (51) on piston (521) top of cylinder assembly (52).

4, negative valence jump dynamic torsion corrector according to claim 1, what it is characterized in that the connecting link (524) of cylinder assembly (52) and piston (521) is connected to spherical hinge syndeton (525).

5, negative valence jump dynamic torsion corrector according to claim 1 is characterized in that hanging reorganization part (55) and is made up of at least two extensions heavy (552,553), hangs reorganization part (55) lower curtate and is provided with a baffle plate (555).

6, negative valence jump dynamic torsion corrector according to claim 1 is characterized in that hanging the reorganization part and is connected with chest expander (56).

7, negative valence jump dynamic torsion corrector according to claim 1, it is characterized in that moment of torsion wall (6) is provided with one group of slide guide wheel (62,63,64,65), rope (61) one ends are connected with the contact (41) of test block (4), the other end of each slide guide of rope (61) pile warp wheel (62,63,50,65,64) is connected with another contact (42) of test block (4), is wire-wrapped in the rope (61) of contact (41) and slide guide wheel (62) and is wire-wrapped in contact (42) and rope (61) that slide guide is taken turns (64) is parallel to each other.

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