CN203823031U - Planetary reducer capable of carrying out torque detection at the same time - Google Patents
Planetary reducer capable of carrying out torque detection at the same time Download PDFInfo
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- CN203823031U CN203823031U CN201420221059.9U CN201420221059U CN203823031U CN 203823031 U CN203823031 U CN 203823031U CN 201420221059 U CN201420221059 U CN 201420221059U CN 203823031 U CN203823031 U CN 203823031U
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Abstract
The utility model relates to a motor speed adjusting device mechanically connected with a motor through a gear device, in particular to a planetary reducer capable of carrying out torque detection at the same time. The planetary reducer comprises a front cover, a shell and an inner gear ring, wherein the inner gear ring is embedded in the shell, the inner gear ring and the shell can relatively rotate, an inwards-protruding boss is arranged on the side, close to the front cover, of the inner wall of the shell in the circumferential direction, a check ring fixedly arranged in the circumferential direction is arranged at the position opposite to the boss, a part of the inner gear ring is located between the boss and the check ring, a protruding stop block is arranged on the outer wall of the inner gear ring, the center of the stop block and the center of the inner gear ring are located on the same horizontal plane, a groove is formed in the inner wall of the shell and close to the stop block, the stop block stretches into the groove, and a piezoelectric sensor is mounted under the stop block and is sequentially connected with a charge amplifier and a signal processor through signal cables. The planetary reducer can simplify a transmission system and improve dynamic torque measuring accuracy.
Description
Technical field
The utility model relates to and is specially adapted for regulating or controlling the speed of two or more motor or the device of torque, particularly relates to a kind of device regulating for speed two or more, motor that be relative to each other by gearing mechanical connection.
Background technique
As everyone knows, a series of features such as NGW type plane table thermoconductivity meter has coaxially, gear range is large, smooth running and transmission efficiency height, in mine, each field such as metallurgy, oil, chemical industry, boats and ships, light industry, food, weaving, lifting transportation and military project has a wide range of applications.In transmission system, mounting torque sensor (or torque and speed sensors) between NGW type plane table thermoconductivity meter and load conventionally, for the running state to transmission system monitor, control and Fault Identification forecast.The system that some is special, mounting torque sensor all before and after the NGW type plane table thermoconductivity meter, to monitor the runnability of power source and load simultaneously.
Moment of torsion is the important parameter of transmission system, and torque measurement is the technological difficulties of transmission system technical parameter test, and the moment of torsion of transmission shaft adopts torque sensor to measure conventionally.At present, the kind of torque sensor is a lot, according to its working principle, can be summarized as two large classes, the first kind is based on shearing stress, and the shearing stress that utilizes foil gauge to measure transmission shaft carrys out calculated torque, its shortcoming is that its measuring accuracy and paster technique is closely related, precision is lower, in addition, also needs the devices such as collecting ring, brush that signal is exported, and collecting ring, brush easily wear and tear, cause signal measurement accuracy not high; Equations of The Second Kind, based on torsional deflection, utilizes torsional axis both ends of the surface outer corner difference, by measuring the torsional deflection of transmission shaft, carrys out calculated torque, and conventional have Relative Displacement Method, photoelectric method and magnetoresistance method etc., but transmission shaft need to be disconnected, and uses inconvenience.In a word, according to existing torque measurement technology, no matter based on shearing stress, or based on torsional deflection, because temperature correction and initial phase compensation problem are difficult to resolve certainly, therefore, carry out dynamic torque while measuring, its degree of accuracy is all lower.
Model utility content
In view of this, the utility model improves traditional NGW type plane table thermoconductivity meter, a kind of function that had both possessed transmission of power is provided, possess again the function that moment of torsion detects, that can simplify transmission system, raising dynamic torque precision of measurement can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously.
The utility model can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, comprise protecgulum, housing, ring gear, wherein: described ring gear embeds in described housing, between the two, leave gap, can relatively rotate, a side near described protecgulum on the inwall of described housing is along the circumferential direction provided with inwardly outstanding boss, on the position relative with described boss, be along the circumferential direction installed with back-up ring, a part on described ring gear is between described boss and described back-up ring, the outer wall of described ring gear is provided with protruding block, being centered close in same level of the center of described block and described ring gear, on the inwall of the described housing closing on described block, have groove, described block stretches in described groove, piezoelectric transducer is installed in the below of described block, described piezoelectric transducer is connected with charge amplifier and signal processor in turn by signal cable.
The plane table thermoconductivity meter difference from prior art that the utility model can carry out moment of torsion detection is simultaneously:
(1) common ring gear and housing are fixed together, and between the two, without relative movement, the utility model leaves gap between ring gear and housing, makes ring gear in quick condition;
(2) at a block of the outside of ring gear design, in the relevant position of housing, open a groove, the block of ring gear is extend in the groove of housing;
(3) piezoelectric transducer is installed between block and housing, for measuring the peripheral force of ring gear, this peripheral force has reflected the torque of ring gear, by the moment of torsion of torque arithmetic output shaft and the moment of torsion of input shaft of ring gear.
If the stressed of piezoelectric transducer is F, force bearing point is R to the distance at ring gear center, and the suffered moment of torsion of ring gear is M
n=RF.If the moment of torsion of input shaft is M
r, the moment of torsion of output shaft is M
cignore frictional loss, and only consider the size of moment of torsion and do not consider the direction of moment of torsion, according to < < epicyclic transmission mechanism design > > (second edition), (Rao Zhengang writes, National Defense Industry Press, 1994.6) p45 can obtain, the moment of torsion M of input shaft
rmoment of torsion M with output shaft
cbe respectively
P=z in formula
b/ z
afor the special parameter of NGW type planetary reducer, wherein z
a, z
bthe number of teeth for sun gear, ring gear.
The plane table thermoconductivity meter that the utility model can carry out moment of torsion detection simultaneously compared with prior art at least has the following advantages:
(1) ring gear is in quick condition, and can relatively rotate between housing, is conducive to the load equalization of plane table thermoconductivity meter;
(2) plane table thermoconductivity meter and torque detecting apparatus are united two into one, saved special torque detecting apparatus, simplified power transmission system, both can measure the moment of torsion of input shaft, can measure again the moment of torsion of output shaft;
(3) by < < sensor technology and engineering application > >, (spring Thursday etc. writes, Atomic Energy Press, 2007.9) p95, piezoelectric transducer is suitable for dynamic force measurement, therefore, the utility model has improved the accuracy that dynamic torque is measured greatly, and Principle of Torque Measurement is simple and reliable, affected by environment little, safeguard simple and convenient.
As further improvement, the top of described block is provided with spring, and the impact force producing when preventing that ring gear from rotating affects the testing precision of sensor.
As further improving, in the gap between the root of described block and the inwall of described housing, oil baffle is installed, described oil baffle can cover described groove completely.The oil baffle of setting up between block and housing covers groove completely, and in the time of can avoiding gear to fly to turn, oil is splashed on sensor by gap, affects the sensitivity of sensor, and then affects moment of torsion testing precision.
As further improving, the notch in described groove outside is provided with the cover plate that covers described notch completely, in order to the parts in groove are isolated from the outside, prevent that extraneous dust from dropping on the normal testing of disturb sensor on sensor, guarantee sensitivity and the testing precision of sensor.
Preferably, the piezoelectric material of described piezoelectric transducer is piezoelectric single crystal or polycrystalline piezoelectric constant.Piezoelectric transducer Bandwidth, highly sensitive, signal to noise ratio is high, simple in structure, reliable operation, lightweight, can greatly improve testing precision and working efficiency that moment of torsion detects.
The plane table thermoconductivity meter that can simultaneously carry out moment of torsion detection to the utility model below in conjunction with accompanying drawing is described further.
Accompanying drawing explanation
Fig. 1 is that the master that the utility model can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously looks sectional view;
Fig. 2 is the partial enlarged drawing at B place in Fig. 1;
Fig. 3 is that the A of Fig. 1 is to partial sectional view;
Fig. 4 is the partial enlarged drawing at C place in Fig. 3.
Embodiment
As shown in Figure 1 and Figure 2, the utility model can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, comprise the major parts such as input shaft 1, protecgulum 2, sun gear 3, bearing bracket stand 4, housing 5, ring gear 6, planet wheel 7, planet carrier 8, planet wheel shaft 9, bonnet 10 and output shaft 11, above-mentioned part is the common part of plane table thermoconductivity meter, and it specifically assembles mode and mutual position relationship does not elaborate herein.Wherein, ring gear 6 embeds in housing 5, between the two, leave gap, ring gear 6 is in quick condition, can relatively rotate with housing 5, a side near protecgulum 2 on the inwall of housing 5 is along the circumferential direction provided with inwardly outstanding boss 501, on housing 5 away from a side of protecgulum 2, on the position relative with boss 501, be along the circumferential direction mounted by means of screws with back-up ring 502, a part on ring gear 6 is between boss 501 and back-up ring 502, circumferencial direction along housing 5, the symmetrical boss 501 and the back-up ring 502 that in the both sides of ring gear 6, arrange clamp the part on ring gear 6, restriction ring gear 6 being axially subjected to displacement along input shaft 1, stability while guaranteeing retarder operation.Again as shown in Figure 3, Figure 4, the outer wall of ring gear 6 is provided with protruding block 601, being centered close in same level of block 601 center and ring gear 6, on the inwall of the housing 5 that this block 601 closes on, have groove 503, block 601 stretches in groove 503, piezoelectric transducer 13 is installed in the below of the block 601 in groove 503, piezoelectric transducer 13 is connected with charge amplifier 16 and signal processor 17 in turn by signal cable 131, to signal is processed, transmission system is controlled.
As shown in Figure 3, Figure 4, be shock absorbing power, the top of block 601 can mounting spring 12, and the two ends of spring 12 contact with the upper surface of groove 503 and the upper surface of block 601 respectively.
The working procedure that the utility model can carry out the plane table thermoconductivity meter of moment of torsion detection is simultaneously, prime mover (not illustrating in figure) drives input shaft 1 rotation, and then drive successively sun gear 3, planet wheel 7 to rotate, planet wheel 7 drives planet carrier 8 to rotate, can apply certain power to ring gear 6 simultaneously, ring gear 6 is rotated, block 601 compressing piezoelectric transducers 13 when ring gear 6 rotates, the signal that piezoelectric transducer 13 is collected is passed to charge amplifier 16 and signal processor 17 successively through signal cable 131.
As shown in Figure 3, Figure 4, between the root 602 of block 601 and the inwall of housing 5, have gap, for preventing gear when rotation, oil is outwards splashed on piezoelectric transducer 13 through gap, in gap, set up oil baffle 15, the area of oil baffle 15 is greater than the area of the notch of groove 503.
Again as shown in Figure 3, Figure 4, on the notch in groove 503 outsides, also add a cover and be useful on dustproof cover plate 14, the area of this cover plate 14 is also greater than the area of notch.
Preferably, the utility model can carry out the piezoelectric material of the piezoelectric transducer 13 in the plane table thermoconductivity meter of moment of torsion detection simultaneously and can select as piezoelectric single crystal such as quartz, sodium potassium tartrate tetrahydrates, also can select polycrystalline piezoelectric constant, as barium titanate, lead zirconate titanate, lead magnoniobate etc., can also select novel polymer sexual type sensing material polyvinylidene fluoride (PVDF).
Above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (5)
1. can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, comprise protecgulum (2), housing (5), ring gear (6), it is characterized in that: described ring gear (6) embeds in described housing (5), between the two, leave gap, can relatively rotate, a side near described protecgulum (2) on the inwall of described housing (5) is along the circumferential direction provided with inwardly outstanding boss (501), on the position relative with described boss (501), be along the circumferential direction installed with back-up ring (502), a part on described ring gear (6) is positioned between described boss (501) and described back-up ring (502), the outer wall of described ring gear (6) is provided with protruding block (601), being centered close in same level of the center of described block (601) and described ring gear (6), on the inwall of the described housing (5) closing on described block (601), have groove (503), described block (601) stretches in described groove (503), piezoelectric transducer (13) is installed in the below of described block (601), described piezoelectric transducer (13) is connected with charge amplifier (16) and signal processor (17) in turn by signal cable (131).
2. according to claim 1ly can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, it is characterized in that: the top of described block (601) is provided with spring (12).
3. according to claim 2ly can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, it is characterized in that: in the gap between the root (602) of described block (601) and the inwall of described housing (5), oil baffle (15) is installed, described oil baffle (15) can cover described groove (503) completely.
4. according to claim 3ly can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, it is characterized in that: the notch in described groove (503) outside is provided with the cover plate (14) that covers described notch completely.
5. according to claim 4ly can carry out the plane table thermoconductivity meter of moment of torsion detection simultaneously, it is characterized in that: the piezoelectric material of described piezoelectric transducer (13) is piezoelectric single crystal or polycrystalline piezoelectric constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221059.9U CN203823031U (en) | 2014-04-29 | 2014-04-29 | Planetary reducer capable of carrying out torque detection at the same time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221059.9U CN203823031U (en) | 2014-04-29 | 2014-04-29 | Planetary reducer capable of carrying out torque detection at the same time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823031U true CN203823031U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420221059.9U Expired - Fee Related CN203823031U (en) | 2014-04-29 | 2014-04-29 | Planetary reducer capable of carrying out torque detection at the same time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939591A (en) * | 2014-04-29 | 2014-07-23 | 安徽理工大学 | Planetary gear speed reducer capable of carrying out torque detection simultaneously |
-
2014
- 2014-04-29 CN CN201420221059.9U patent/CN203823031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939591A (en) * | 2014-04-29 | 2014-07-23 | 安徽理工大学 | Planetary gear speed reducer capable of carrying out torque detection simultaneously |
| CN103939591B (en) * | 2014-04-29 | 2016-05-18 | 安徽理工大学 | Can carry out the planetary reducer of moment of torsion detection simultaneously |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160429 |