CN101286668A - Belt stretcher driven by AC series excitation motor - Google Patents
Belt stretcher driven by AC series excitation motor Download PDFInfo
- Publication number
- CN101286668A CN101286668A CNA2007100213582A CN200710021358A CN101286668A CN 101286668 A CN101286668 A CN 101286668A CN A2007100213582 A CNA2007100213582 A CN A2007100213582A CN 200710021358 A CN200710021358 A CN 200710021358A CN 101286668 A CN101286668 A CN 101286668A
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- belt
- belt stretcher
- regulating wheel
- fixed
- driving lever
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Abstract
The invention provides a belt stretcher driven by an AC series excited machine, which comprises a deflector rod, a torsional spring and a tension pulley; the deflector rod is fixed on the base of a motor by a locating dowel and can rotate round the locating dowel; one end of the torsional spring is fixed on the deflector rod and the other end thereof is fixed on a stop place of the base; the tension pulley matched with belts is arranged at the front end of the deflector rod. The belt stretcher of the invention, under the action of the torsional spring, and realizes that the tension pulley automatically imposes tension on driving belts, thus ensuring stable transmission efficiency, promoting reliability and working efficiency of the belt transmission and prolonging the service life of the belts; furthermore, the braking function of the belt stretcher can avoid the occurrence of accidents. Therefore, the belt stretcher has good economic benefits and social effects and promising application prospect.
Description
Technical field
The present invention relates to a kind of driving belt tensioning apparatus, relate in particular to the belt stretcher that exchanges the series excited machine transmission.
Background technology
A.C. series motor (be generally 10000～30000rpm), and motor volume is little, cost is low, thereby is widely used in fields such as electric tool and garden instrument owing to its rotating speed height.And the output shaft of this type of instrument does not need so high rotating speed, therefore also need dispose speed reduction gearing.
At present, the belt transmission that generally adopts garden instrument realizes slowing down, and motor speed height, load weigh, and belt is subjected to the effect of predetermined tension, when it is operated, belt stretches a little, just causes the minimizing of belt tension, and belt fluffs easily, thereby after operation a period of time, thereby belt is slided, very easily produce skidding, can cause excessive noise and wearing and tearing.Belt temperature rises even can cause can not stable operation, so that breaks down, and has influenced the normal use of entire equipment, has caused loss to the user.
Therefore, designing a kind of belt stretcher that exchanges the series excited machine transmission, will be an economic benefit and the significant technical task of social effect.
Summary of the invention
The purpose of this invention is to provide a kind of belt stretcher that exchanges the series excited machine transmission, can significantly improve the bel-drivenn reliability, increase work efficiency, guarantee the long-time normal operation of equipment.
Purpose of the present invention is achieved through the following technical solutions:
Exchange the belt stretcher of series excited machine transmission, it is characterized in that: this tensioning apparatus comprises driving lever, torsion spring and regulating wheel, driving lever is fixed on the base of motor and can rotates around this alignment pin by alignment pin, one end of torsion spring is fixed on the driving lever, the other end of torsion spring is fixed on the spacing place of base, is a regulating wheel that matches with belt at the front end of driving lever.
Further, the belt stretcher of above-mentioned interchange series excited machine transmission, the surface of regulating wheel parallels with the surface of driving lever, and the center line of regulating wheel parallels with motor shaft center line, center transmission shaft line.
Further, the belt stretcher of above-mentioned interchange series excited machine transmission, the width of regulating wheel is consistent with the width of driving-belt.
The outstanding substantive distinguishing features and the obvious improvement of technical solution of the present invention is mainly reflected in:
1. simple and direct, compact, easy to operate, the dependable performance of structure of the present invention; Under the effect of torsionspring, tensioning apparatus applies tensile force to driving belt automatically by regulating wheel, guarantees that transmission efficiency is stable, has significantly improved bel-drivenn reliability and operating efficiency, prolong the useful life of belt, brought many convenience for user's maintenance;
2. tensioning apparatus of the present invention also has brake function, can in 3 seconds the hay mover resistance be stopped, and avoids the generation of some contingencies effectively;
3. novel in design, scientific and reasonable, both kept the auto-tensioning of dynamo belt during work, reduced the position error between each train again, and helped traveling comfort and reduced the probability that abnormal sound produces, improved the work effect of belt tension; Social effect and remarkable in economical benefits, application prospect is fine.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the schematic diagram that exchanges the series excited machine transmission mechanism;
Fig. 2: the structural representation of belt stretcher of the present invention.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| 1 | Helical gear | 2 | Motor | 3 | Base |
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| 4 | Power transmission shaft | 5 | Drive | 6 | |
| 7 | |
8 | |
9 | Regulating |
| 10 | Driving-belt |
Embodiment
As shown in Figure 1, exchange the schematic diagram of series excited machine transmission mechanism, helical gear 1 links to each other with the axle of motor 2, takes drive 5 runnings to by driving-belt, and drive 5 links to each other with power transmission shaft 4, so its energy is transferred on the external machinery (blade of using as hay mover) by power transmission shaft 4.
Motor 2 is under the situation of energising, the electric energy of motor is converted to mechanical energy, export by motor shaft, in operation process, because what adopted is belt transmission, so it has skidding to take place, in order to prevent and eliminate skidding in the transmission process, the present invention designs belt stretcher, as shown in Figure 2, an alignment pin 7, driving lever 6 promptly are set on the base 3 of motor, torsion spring 8 is fixed on the alignment pin 7, and driving lever 6 can rotate around this alignment pin 7, one end of torsion spring 8 is fixed on the driving lever 6, an other end of torsion spring 8 is fixed on the spacing place of base 3, at the front end of driving lever a regulating wheel 9 is installed, and regulating wheel 9 matches with belt 10.The surperficial keeping parallelism of the surface of regulating wheel and driving lever, and the center line of regulating wheel and motor shaft center line, center transmission shaft line also keep parallel to each other, and the width of regulating wheel is consistent with the width of driving-belt.Regulating wheel is under the effect of the restoring force of torsion spring, give 10 1 pretightning forces of belt, when long-play or other reasons and when producing the belt slack phenomenon, the restoring force of torsion spring plays a role, regulating wheel 9 compresses belt 10, produce tensile force, make belt be in the angular range of a suitable envelope belt pulley, realize regulating automatically tensioning.
During concrete the application, because the effect of torsion spring 8, its regulating wheel 9 is pressed in driving-belt 10, and remain a kind of tensioning state between the driving-belt, when operation, when driving-belt 10 takes place to become flexible, adjust regulating wheels 9 by torsion spring 8, thereby regulate the elasticity of belt voluntarily, make driving-belt 10 be in desirable tensioning state all the time, so in the whole service process, avoid and eliminated the skidding of driving-belt effectively.
What deserves to be explained is that regulating wheel also has brake function, garden instrument: as hay mover the blade of wide 30～50mm, long 300～500mm, thick 2～3mm is arranged, its moment of inertia is quite big.For guaranteeing and satisfying and use requirement safely, can stop rapidly behind the hay mover cut-off switch (generally requiring in 3 seconds), and the time is short more good more, and regulating wheel of the present invention can play braking action effectively, can in 3 seconds, the hay mover resistance be stopped, prevent that effectively some contingencies from taking place.
In sum, unique, the novel structure of belt stretcher design of the present invention, easy to use, improved bel-drivenn reliability and operating efficiency, prolonged the useful life of belt greatly, cost is low, function is remarkable, economic benefit and social effect are remarkable, have higher popularization and application values.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (3)
1. exchange the belt stretcher of series excited machine transmission, it is characterized in that: this tensioning apparatus comprises driving lever (6), torsion spring (8) and regulating wheel (9), driving lever (6) is gone up and can be rotated around this alignment pin (7) by the base (3) that alignment pin (7) is fixed on motor, one end of torsion spring is fixed on the driving lever (6), the other end of torsion spring is fixed on the spacing place of base (3), is a regulating wheel (9) that matches with belt (10) at the front end of driving lever.
2. the belt stretcher of interchange series excited machine according to claim 1 transmission is characterized in that: the surface of regulating wheel parallels with the surface of driving lever, and the center line of regulating wheel parallels with motor shaft center line, center transmission shaft line.
3. the belt stretcher of interchange series excited machine according to claim 1 transmission is characterized in that: the width of regulating wheel is consistent with the width of driving-belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100213582A CN101286668A (en) | 2007-04-09 | 2007-04-09 | Belt stretcher driven by AC series excitation motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100213582A CN101286668A (en) | 2007-04-09 | 2007-04-09 | Belt stretcher driven by AC series excitation motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101286668A true CN101286668A (en) | 2008-10-15 |
Family
ID=40058691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100213582A Pending CN101286668A (en) | 2007-04-09 | 2007-04-09 | Belt stretcher driven by AC series excitation motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101286668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326226A (en) * | 2014-10-16 | 2015-02-04 | 嘉兴职业技术学院 | Feeding device for methane tank |
| CN114732549A (en) * | 2016-01-25 | 2022-07-12 | 洁碧有限公司 | Reduced form factor oral irrigator |
-
2007
- 2007-04-09 CN CNA2007100213582A patent/CN101286668A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326226A (en) * | 2014-10-16 | 2015-02-04 | 嘉兴职业技术学院 | Feeding device for methane tank |
| CN104326226B (en) * | 2014-10-16 | 2016-10-12 | 嘉兴职业技术学院 | A kind of charging gear of methane-generating pit |
| CN114732549A (en) * | 2016-01-25 | 2022-07-12 | 洁碧有限公司 | Reduced form factor oral irrigator |
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| PB01 | Publication | ||
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Open date: 20081015 |