CN201340260Y - Rotation angle measuring device - Google Patents

Abstract

Disclosed is a rotation angle measuring device which belongs to measuring device for rotation movement and solves the problems that the rotation angle measuring device in prior art is difficult in measuring rotary parts with large aperture, deep holes or blind holes. The utility model comprises a rotary shaft and a measuring flange plate; wherein, one end of the rotary shaft is provided with a conical opening and is fixedly connected with the butt-joint flange plate, a pore-type insert is mounted on the butt-joint flange plate; a pull pawl and a pull rod are arranged in the rotary shaft, the pull rod is in threaded connection with the pull pawl; a digital display screen, an angle sensor, a measuring circuit, a needle-type insert and a positioning cone are mounted on the measuring flange plate; the top end of the positioning cone is in threaded connection with a pull nail; the positioning cone is inserted into the conical opening of the rotary shaft, the needle-type insert is matched with the pore-type insert. The rotation angle measuring device realizes the mounting positioning with high accuracy, solves the difficult mounting problem of detected structure with large aperture and deep holes, not only can be applicable to rotation angle measurement of deep-hole or closed cavity body, but also can be applicable to the measurement of related physical quantities of vibration, swinging and other motion structures.

Description

A kind of rotating angle measurement apparatus

Technical field

The utility model belongs to the measurement mechanism that rotatablely moves, and is specifically related to a kind of rotating angle measurement apparatus, is suitable for the rotation angle measurement of the rotary part that is positioned at deep hole or seal chamber.

Background technology

At present, be used to the to rotatablely move device of measurement of angle has: scrambler, rotary transformer and synchrodyne etc.Patent of invention " is measured the devices and methods therefor of the absolute anglec of rotation " and is mentioned in (application number 01141153.8), the kind of drive of this three classes angle measurement unit and mounting means basically identical, being respectively key transmission and screw connects, representational scrambler has Heidenhain ECN223F model angular encoder, TS2640N321E64 model rotary transformer of Japanese TAMAGAWA company etc.Chief editors' such as Yang Jiajun teaching material " Fundamentals of Machine Design " (Wuhan: mention publishing house of the Central China University of Science and Technology 2003) by the 344-349 page or leaf, usually the key kind of drive has two kinds, a kind of is to be matched with common key on rotary part (as the motor) axle by keyway, thereby realizes transmission; Another is to utilize the spline link to realize reliable and stable transmission.Screw connects and promptly is connected by the corresponding mounting hole of screw with proving installation and rotating mechanism, thereby realizes installing and fixing of proving installation.

The advantage of the mode that is in transmission connection that proposes above is: simple in structure, realize that easily reliable and stable, cost is low; But also there is certain shortcoming simultaneously: when rotary part is positioned at deep hole, the device of above-mentioned metering system and the location comparison difficulty that will become, angle measurement does not have demonstration directly perceived yet, needs boring realization connection on tested rotary part, thus because the lower measuring accuracy that has influence on of installation accuracy.Cause the existing mode that is in transmission connection to being positioned at the difficulty that installs and measures of big diameter and deep hole class or the tested rotary part of blind hole class thus.

Summary of the invention

The utility model provides a kind of rotating angle measurement apparatus, solves existing rotating angle measurement apparatus to being positioned at the problem that installs and measures difficulty of big diameter and deep hole class or the tested rotary part of blind hole class.

A kind of rotating angle measurement apparatus of the present utility model comprises turning axle and measures ring flange, it is characterized in that:

Described turning axle is the hollow axis body with shoulder hole, and the one end has location keyway and conical perforate, and affixed with the plain flange dish, and the cellular type connector is housed on the plain flange dish, and the cellular type connector connects the external data harvester by lead; Turning axle stage casing shoulder hole is built-in with pulling claw, penetrates pull bar in the turning axle other end shoulder hole, and pull bar one end is threaded with pulling claw, and the pull bar other end is with spring and spacing by nut;

On the described measurement ring flange digital display screen, angular transducer and metering circuit, pin type connector and locating cone are housed, digital display screen, angular transducer and metering circuit are connected with pin type connector electric signal; Measure the affixed locating cone of flange disk center, its tapering mates with the tapering of the conical perforate of described turning axle, and the top of locating cone and blind rivet are by being threaded;

Locating cone on the described measurement ring flange inserts the conical perforate of described turning axle, and positioning key is housed on the locating cone, with the conical tapping keyway coupling of turning axle; Described pin type connector and described cellular type connector coupling.

Described rotating angle measurement apparatus, it is further characterized in that:

Described pulling claw is made up of pintongs sheet jaw, groups of springs and connecting link three parts, and the end that connecting link embeds pintongs sheet jaw constitutes the tongue core, and the junction of connecting link and pintongs sheet jaw is affixed by the circumferential banding of groups of springs.

During the work of the utility model device, externally under the effect of power driving part (pneumatic or Hydraulic Elements), power direction is for applying level driving force left along the pull bar axis direction to nut and keeping, it is parallel mobile toward the left side that nut drives pull bar, thereby spring is compressed, and simultaneously pulling claw moves to the left side is parallel, when pulling claw moves to the aperture when closing up the aperture greater than it, pulling claw opens, and can insert measuring ring flange.

Measure in the ring flange insertion process, the conical perforate of locating cone and turning axle realizes the ground floor location, the coupling of the pilot hole in guide finger in the pin type connector and the cellular type connector realizes second layer location, after confirming preceding two-layer accurate location, key on the locating cone realizes that with the keyway on the ring flange the 3rd layer docks the location, after confirming to dock successfully, the contact pin of the pin type connector of coupling and the jack of cellular type connector are realized last one deck location, and whole docking operation is finished.

When slow unloading imposes on the external force of nut, by the restoring action of spring, drive the pulling claw level and move to right, pulling claw is firmly grasped blind rivet, thereby has realized the location to the high precision and the high stability of testing apparatus.

The utility model can be by installing circumferentially fixing turning axle of bearing and bearing seat under user mode, and turning axle links to each other with tested rotary part by gear or belt, realizes the 360 ° measurements of tested rotary part along axis.During tested rotary part setting in motion, the variation of angular transducer and metering circuit perception angle, measurement result can be directly reflected on the digital display tube, form that can also storage card (as SD card, CF card etc.) is preserved measurement data for a long time, the back that finishes to be measured is taken out and is analyzed, or by the cooperating of pin type connector and cellular type connector, be delivered to outside the rotating mechanism with the form of lead, be used for data processing or control.

The utility model has been realized high-precision installing and locating, solved large aperture deep hole class by the installation difficulty of geodesic structure, not only can be applied to the rotation angle measurement of deep hole or airtight cavity, also can be used for vibrating, swing and the measurement of other motion related physical quantity.

Description of drawings

Fig. 1: profile synoptic diagram of the present utility model;

Fig. 2: cut-open view of the present utility model;

Fig. 3: exploded sketch of the present utility model;

Fig. 4: pin type connector synoptic diagram;

Fig. 5: cellular type connector synoptic diagram;

Fig. 6: the open configuration synoptic diagram of pulling claw;

Fig. 7: the impaction state synoptic diagram of pulling claw.

Embodiment

As shown in Figure 1 and Figure 2, the utility model comprises turning axle 1 and measures ring flange 2, turning axle 1 is for having the hollow axis body of shoulder hole, the one end has location keyway and conical perforate 15, and it is affixed with plain flange dish 7, cellular type connector 6 is housed on the plain flange dish 7, and cellular type connector 6 connects the external data harvester by lead; Turning axle 1 stage casing shoulder hole is built-in with pulling claw 11, penetrates pull bar 10 in turning axle 1 other end shoulder hole, and pull bar 10 1 ends are threaded with pulling claw 11, and the pull bar other end is with spring 9 and spacing by nut 8;

Measure on the ring flange 2 digital display screen 3, angular transducer and metering circuit 4, pin type connector 5, locating cone 14 and blind rivet 12 are housed, digital display screen 3, angular transducer and metering circuit 4 are connected with pin type connector 5 electric signal; Measure the affixed locating cone 14 in ring flange 2 centers, its tapering mates with the tapering of the conical perforate 15 of described turning axle, and the top of locating cone 14 and blind rivet 12 are by being threaded;

The locating cone of measuring on the ring flange 2 14 inserts turning axle 1 conical perforate 15, on the locating cone 14 positioning key is housed, with the conical 15 tapping keyways coupling of turning axle; Pin type connector 5 and cellular type connector 6 couplings.

As shown in Figure 3, during assembling, at first, with the fastening elimination tolerance clearance of measuring in ring flange 2 and the turning axle 1 of each parts, with the precision that guarantees to measure; It is affixed with locating cone 14 usefulness bolts wherein to measure ring flange 2; Orientational cone-shaped surface 14 tops and blind rivet 12 screw threads are affixed; Turning axle 1 is affixed with plain flange dish 7 usefulness bolts; Pulling claw 11 is installed in the turning axle shoulder hole, and is terminal affixed with pull bar 10 screw threads; Pull bar 10 1 ends cooperate with spring 9 and strain, and the other end and nut 8 screw threads are affixed

As shown in Figure 4, pin type connector 5 is made up of dielectric moldings 5-1, contact pin 5-2 and guide positioning pin 5-3 three parts; As shown in Figure 5, cellular type connector 6 is made up of dielectric moldings 6-1, jack 6-2 and pilot hole 6-3 three parts.The jack of two connectors and contact pin quantity can be determined according to the demand of actual test signal in good time.

As shown in Figure 6 and Figure 7, pulling claw 11 is made up of pintongs sheet jaw 11-1, groups of springs 11-2 and connecting link 11-3 three parts, the end that connecting link 11-3 embeds pintongs sheet jaw 11-1 constitutes the tongue core, and the junction of connecting link 11-3 and pintongs sheet jaw 11-1 is affixed by the circumferential banding of groups of springs; The effect of tongue core is equivalent to the fulcrum of lever, is arranging 11 two kinds of different states of pulling claw: open configuration and tension.As shown in Figure 6, when jaw 11-1 was not stressed, the circumferential banding jaw 11-1 and the connecting link 11-1 of spring, tongue core withstood jaw 11-1 and keep open configuration; As shown in Figure 7, when jaw 11-1 is stressed, the front end of jaw 11-1 with the tongue core be fulcrum to axial-movement, tail end circumferential tension groups of springs 11-2 outwards moves, and after the front end of jaw 11-1 closes up, finishes the action of closing up of pulling claw 11.

During test, the concrete sequence of movement of the utility model is as follows:

One, by power driving part (pneumatic or Hydraulic Elements, power direction is along the pull bar axis direction) apply level power and maintenance left for nut 8, nut 8 is given pull bar 10 by being threaded with transmission of power, it is parallel mobile toward the left side to drive pull bar 10, thereby spring 9 is compressed, and pulling claw 11 is parallel move toward the left side also, when pulling claw 11 moves to the aperture when closing up the aperture greater than it, groups of springs 11-2 in pulling claw 11 structures flicks, thereby realizes the action of opening of pulling claw 11.

Two, locating cone 14 is realized the ground floor location with the conical perforate 15 of turning axle, guide finger 5-3 in Pi Pei the pin type connector 5 and the pilot hole 6-3 in the cellular type connector 6 realize second layer location then, after confirming preceding two-layer accurate location, key on the locating cone realizes that with the keyway on the ring flange the 3rd layer docks the location, after confirming to dock successfully, contact pin 5-2 in the pin type connector 5 of coupling and the jack 6-2 in the cellular type connector 6 realize last one deck location, and whole docking operation is finished.

Three, slowly unload the power that power driving part is given nut 8, because the restoring action of spring 9, drive pulling claw 11 moves to right toward levels, thereby realizes the promptly action of 11 pairs of blind rivets 10 of pulling claw.These three actions have realized the location to the high precision and the high stability of testing apparatus fully.

Can be by circumferentially fixing turning axle 1 of bearing and bearing seat to be installed, turning axle links to each other with tested rotary part by gear or belt, in order to the 360 ° measurements of realization turning axle 1 along axis.

Claims (2)

1. a rotating angle measurement apparatus comprises turning axle (1) and measures ring flange (2), it is characterized in that:

Described turning axle (1) is for having the hollow axis body of shoulder hole, the one end has location keyway and conical perforate (15), and affixed with plain flange dish (7), cellular type connector (6) is housed on the plain flange dish (7), cellular type connector (6) connects the external data harvester by lead; Turning axle (1) stage casing shoulder hole is built-in with pulling claw (11), penetrates pull bar (10) in turning axle (1) other end shoulder hole, and pull bar (10) one ends are threaded with pulling claw (11), and the pull bar other end is with spring (9) and spacing by nut (8);

Digital display screen (3), angular transducer and metering circuit (4), pin type connector (5) and locating cone (14) are housed on the described measurement ring flange (2), and digital display screen (3), angular transducer and metering circuit (4) are connected with pin type connector (5) electric signal; Measure the affixed locating cone in ring flange (2) center (14), its tapering mates with the tapering of the conical perforate of described turning axle (15), and the top of locating cone (14) and blind rivet (12) are by being threaded;

Locating cone (14) on the described measurement ring flange (2) inserts the conical perforate of described turning axle (1) (15), and locating cone is equipped with positioning key on (14), mates with turning axle taper shape (15) tapping keyway; Described pin type connector (5) and described cellular type connector (6) coupling.

2. rotating angle measurement apparatus as claimed in claim 1 is characterized in that:

Described pulling claw is made up of pintongs sheet jaw, groups of springs and connecting link three parts, and the end that connecting link embeds pintongs sheet jaw constitutes the tongue core, and the junction of connecting link and pintongs sheet jaw is affixed by the circumferential banding of groups of springs.

Images