CN204572931U - A kind of wheel reductor structure with torque real-time detection function - Google Patents
A kind of wheel reductor structure with torque real-time detection function Download PDFInfo
- Publication number
- CN204572931U CN204572931U CN201520163049.9U CN201520163049U CN204572931U CN 204572931 U CN204572931 U CN 204572931U CN 201520163049 U CN201520163049 U CN 201520163049U CN 204572931 U CN204572931 U CN 204572931U
- Authority
- CN
- China
- Prior art keywords
- jack shaft
- torque
- bearing
- force snesor
- retarder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
Torque live signal controls to have very important significance to electric vehicle stable system and drive system, and the torque of Direct wheel drives motor now adopts transformation of energy method indirectly to convert to obtain mostly, and precision is poor.The utility model proposes a kind of wheel reductor structure with torque real-time detection function, by reasonable Arrangement wheel reductor structure, jack shaft left bearing is supported by bearing sleeve, thus ensureing under the prerequisite that basic transmission requires, the size of the active force of the jack shaft that jack shaft left bearing is subject to can be detected in real time, calculate the torque that retarder transmits thus, ensureing under the prerequisite that basic transmission requires, the torque that retarder transmits can be detected in real time, and export as electronic signals, thus for the control of drive system, there is measuring accuracy high, structure is simple, low cost and other advantages.
Description
Technical field
The utility model belongs to electric vehicle and drives transmission field, is specifically related to a kind of wheel reductor structure with torque real-time detection function.
Background technique
Torque is the basic load form of various work mechanism transmission shaft, with the ability to work of dynamic power machine, energy consumption, efficiency, running life and Safety performance etc. element be closely connected, the measurement of torque all has great importance to the Intensity Design of the deterministic finite automata of transmission shaft load, transmission system working part, the selection of prime mover capacity, various Machinery Products Development, quality testing, optimization control, monitoring of working condition and fault diagnosis etc.Torque live signal controls to have very important significance to electric vehicle stable system and drive system, and the torque of Direct wheel drives motor now adopts transformation of energy method indirectly to convert to obtain mostly, and precision is poor.
Current torque real-time detection method mainly comprises balance force method, transformation of energy method and TRANSFER METHOD.Balance force method directly surveys torque from body, there is not the transmission of torque problem from revolving part to static element, but it is only applicable to detecting the torque under at the uniform velocity working condition, can not measure dynamic torque.Conversion of Energy method is the indirect method of measurement, and measurement error is larger, usually reaches 10% ~ 15%, and general only have more application in motor and the torque measurement of liquid machine.TRANSFER METHOD adopts non-contact measurement mostly, easy to use, and structure is simple, but the impact of non-contact measurement due to the factor such as temperature, algorithm and the collection difficulty of coherent signal, precision also needs further raising.
The Vehicle Stability System of electric vehicle and power-driven system all need to use dtc signal.The acquisition of electric vehicle dtc signal is normally according to electric moter voltage, electric current and tach signal, and indirectly estimate motor instantaneous torque according to transformation of energy method, precision is poor.Up to the present, little to the real-time detect delay of the torque of power-driven system.
Model utility content
The utility model proposes a kind of wheel reductor structure with torque real-time detection function.By reasonable Arrangement wheel reductor structure, ensureing, under the prerequisite that basic transmission requires, the torque that retarder transmits to be detected in real time, and export as electronic signals, thus for the control of drive system, have that measuring accuracy is high, structure is simple, reliable and stable, the low advantage of cost.
Achieving the above object, the technological scheme that the utility model provides is:
Input torque imports retarder into through input shaft, and input shaft gear and input shaft are made of one.Input shaft gear engages with jack shaft gearwheel, and jack shaft gearwheel is connected by key and jack shaft.Jack shaft small gear and jack shaft are made of one.
Jack shaft right-hand member is supported on differential right housing body by jack shaft right bearing inner ring, jack shaft left end is supported by jack shaft left bearing inner ring, jack shaft left bearing is supported by the inner ring of bearing sleeve, the outer ring of bearing sleeve is connected with force snesor by screw thread, there is stud at force snesor two ends, and can be screwed into respectively in bearing sleeve and the corresponding tapped hole of retarder left shell, force snesor can bear pulling force and pressure simultaneously, it is when the effect being subject to power, will have voltage signal and export.
Second level driven gear is connected by key with output shaft, and output shaft left end is supported on retarder left shell by output shaft left bearing inner ring.Output shaft right-hand member is supported on differential right housing body by output shaft right bearing inner ring.
When arranging force snesor, there is setting angle in its axial direction and Vertical direction
, i.e. the angle of support reaction and Vertical direction suffered by jack shaft left bearing, in other words, the axial direction of force snesor must with support reaction direction conllinear suffered by jack shaft left bearing, then support reaction suffered by force snesor institute's dynamometry and jack shaft left bearing.When retarder normally works, for linear ratio relation between the power that force snesor is surveyed and reducer input shaft torque, therefore can be converted by the signal of force snesor when retarder works and obtain the real-time torque of retarder.
Comparatively prior art is compared, and superiority of the present utility model is:
1., under the prerequisite ensureing the normal transmission of wheel reductor, the real-time detection to retarder torque can be realized;
2. force snesor directly measures jack shaft stressing conditions, and draw retarder transmitting torque by converting, reliable and stable, measuring accuracy is high;
3. this wheel reductor assembly is changed a little on traditional retarder basis, and structure is simple, and convenient test, has good versatility
4. this wheel reductor assembly general structure is simple, and force snesor cost used is low, and cost advantage is obvious, has larger using value and market potential.
Accompanying drawing explanation
Fig. 1 torque detection means erection drawing;
Fig. 2 torque detection means measuring end side view.
Number in the figure illustrates:
1---left shell; 2---output shaft;
3---output shaft left bearing; 4---second level driven gear;
5---jack shaft left bearing;
6---sensor; 7---bearing sleeve;
8---input shaft;
9---jack shaft gearwheel; 10---jack shaft right bearing;
11---jack shaft; 12---jack shaft sleeve;
13---output shaft right bearing; 14---output shaft sleeve;
15---right shell body.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, input torque imports retarder into through input shaft 8, and input shaft gear and input shaft 8 are made of one.Input shaft gear engages with jack shaft gearwheel 9.Jack shaft gearwheel 9 is connected by key and jack shaft 11, and right-hand member is by jack shaft sleeve location 12.Jack shaft small gear and jack shaft 11 are made of one.Jack shaft 11 right-hand member is supported on differential right housing body 15 by jack shaft right bearing 10 inner ring, jack shaft left end is supported by jack shaft left bearing inner ring 5, jack shaft left bearing 5 is supported by the inner ring of bearing sleeve 7, the outer ring of bearing sleeve 7 is connected with force snesor 6 by screw thread, there is stud at force snesor 6 two ends, can be screwed in bearing sleeve 7 and the corresponding tapped hole of retarder left shell 1 respectively, force snesor 6 can bear pulling force and pressure simultaneously, it is when the effect being subject to power, will have voltage signal and export.
Second level driven gear 4 is connected by key with output shaft 2, and right-hand member is located by output shaft sleeve 14.Output shaft left end is supported on retarder left shell 1 by output shaft left bearing 3 inner ring.Output shaft right-hand member is supported on differential right housing body 15 by output shaft right bearing 13 inner ring.
When arranging force snesor 6, there is setting angle in its axial direction and Vertical direction
(as shown in Figure 2), the i.e. angle of support reaction and Vertical direction suffered by jack shaft left bearing 5, in other words, the axial direction of force snesor 6 must with support reaction direction conllinear suffered by jack shaft left bearing 5, then support reaction suffered by force snesor 6 dynamometry and jack shaft left bearing 5.When retarder normally works, for linear ratio relation between the power that force snesor 6 is surveyed and reducer input shaft torque, therefore can be converted by the signal of force snesor 6 when retarder works and obtain the real-time torque of retarder.
As shown in Figure 2, according to the stressed active force obtaining jack shaft suffered by jack shaft left bearing of jack shaft, this power can be analyzed to radial force
and peripheral force
, suffered make a concerted effort
, wherein
for making a concerted effort
with peripheral force
angle.
Special way of the present utility model is the outer ring of jack shaft left bearing and is bearing on reducer shell unlike other bearing, but be supported on the inner ring of bearing sleeve, bearing sleeve is connected by screw thread and force snesor, ensures that force snesor stud axis and Vertical direction angle are
, namely consistent with the resultant direction of jack shaft left bearing suffered by bearing sleeve, so force snesor support force
with the active force of jack shaft left bearing to bearing sleeve
active force and reaction force each other, so
.
Force analysis carries out to input shaft and jack shaft known, the size of the support reaction that jack shaft is subject at left end block bearing place and the torque of input shaft linear:
(this T is T shown in Fig. 1), the i.e. size of force snesor institute dynamometry
with the torque of input shaft
linear, coefficient
for a constant with the intrinsic relating to parameters of retarder.
In sum, can be converted by the signal of force snesor when retarder works and obtain the real-time torque of retarder.
The utility model specialization is by bearing sleeve spring bearing, directly measures the support reaction of bearing to jack shaft, and by calculating real-time torque, and retarder concrete structure has nothing to do, and the utility model is also applicable to other various types of wheel reductor.
Claims (2)
1. there is a wheel reductor structure for torque real-time detection function, it is characterized in that: comprise reducer shell, input gear axle, jack shaft, second level driven gear, output shaft, bearing sleeve, force snesor, block bearing; Jack shaft one end is supported on differential right housing body by jack shaft right bearing inner ring, the jack shaft the other end is supported on bearing sleeve by jack shaft left bearing inner ring, the outer ring of bearing sleeve is connected with force snesor by screw thread, there is stud at force snesor two ends, can be screwed into respectively in bearing sleeve and the corresponding tapped hole of retarder left shell.
2. a kind of wheel reductor structure with torque real-time detection function according to claim 1, jack shaft left bearing is supported on force snesor by bearing sleeve, and force snesor axis is consistent for jack shaft left bearing resultant direction with jack shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163049.9U CN204572931U (en) | 2015-03-20 | 2015-03-20 | A kind of wheel reductor structure with torque real-time detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163049.9U CN204572931U (en) | 2015-03-20 | 2015-03-20 | A kind of wheel reductor structure with torque real-time detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572931U true CN204572931U (en) | 2015-08-19 |
Family
ID=53865572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520163049.9U Expired - Fee Related CN204572931U (en) | 2015-03-20 | 2015-03-20 | A kind of wheel reductor structure with torque real-time detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979837A (en) * | 2017-04-26 | 2017-07-25 | 江苏大学 | A kind of tractor driving wheel torque measuring device and measuring method |
-
2015
- 2015-03-20 CN CN201520163049.9U patent/CN204572931U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979837A (en) * | 2017-04-26 | 2017-07-25 | 江苏大学 | A kind of tractor driving wheel torque measuring device and measuring method |
| CN106979837B (en) * | 2017-04-26 | 2019-12-03 | 江苏大学 | A kind of tractor driving wheel torque measuring device and measurement method |
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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: 20150819 Termination date: 20210320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |