CN103307234B - Straddle-type adjustable steel V belt translation tensioning mechanism - Google Patents
Straddle-type adjustable steel V belt translation tensioning mechanism Download PDFInfo
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- CN103307234B CN103307234B CN201310215512.5A CN201310215512A CN103307234B CN 103307234 B CN103307234 B CN 103307234B CN 201310215512 A CN201310215512 A CN 201310215512A CN 103307234 B CN103307234 B CN 103307234B
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Abstract
The invention discloses a kind of straddle-type adjustable steel V belt translation tensioning mechanism, belong to mechanical transmission fields.This mechanism comprises pedestal, two tensioning shaft combinations, pedestal with two rectangular U-shape bodies and by obtuse angle broken line plate be connected, two tensioning shaft combinations are arranged in two rectangular U-shape bodies respectively, and the press spring base that stage clip and plug screw are housed has been installed in the top of each tensioning shaft combination.During use, two rectangular U-shape bodies of tensioning mechanism straddle on the two sections steel band of steel belt driving mechanism, can regulate by rotating plug screw to the predetermined tension force of steel band.The invention solves the problem such as discontinuity, unnecessary tensioning rotation that single hop tensioning mechanism exists, improve transmission accuracy and the working life of steel band, there is adjustment simple and convenient, the features such as compact structure.
Description
Technical field
The invention belongs to mechanical transmission fields, relate generally to a kind of steel belt driving mechanism, particularly relate to the adjustable steel V belt translation tensioning mechanism that a kind of photoelectric device uses.
Background technique
In photoelectric device, often tape driving device will be used.In high-precision tape driving device, be designed with steel belt tensioning mechanism, to eliminate the lax of steel band, also can eliminate the phenomenon of the lax and over-tension that steel band brings owing to expanding with heat and contract with cold in different environment simultaneously, thus improve transmission accuracy and the reliability of steel band.
In " mechanical design handbook " (China Machine Press, Xu Hao edits) the 22-10 page of the 22nd section " band, chain, friction and power screw " and " mechanical transmission design handbook " (China Machine Press, Bu Yan edits) 696 pages of the 8th chapter " V belt translation ", disclose the tension pulley mechanism shown in Fig. 1.Wherein, Idle wheel is close to driving belt, utilizes the position of Idle wheel to change the lax of driving belt and tensioning, makes driving belt tension force moderate.Because this mechanism can only adjust the position of Idle wheel when assembling, and in using, the position of Idle wheel is unalterable, therefore along with the change of environment, automatically can not change the tension force of driving belt.
In addition, in 696 page of 11.1 joint " tensioning method " of " mechanical transmission design handbook " (China Machine Press, Bu Yan edits) the 8th chapter " V belt translation ", automatic tensioning mechanism shown in a kind of Fig. 2 is also disclosed.This mechanism utilizes counterweight to conduct oneself with dignity, and drives a drive wheel to rotate, thus changes the centre distance of two drive wheels in driving mechanism, come automatically driving belt tensioning.Because this automechanism requires the centre distance of two drive wheels changing driving mechanism.And in photoelectric device, two drive wheel centre distance of driving mechanism do not allow to change often.Simultaneously driving belt (especially steel band) can be elongated or shorten when rising-heat contracting-cold, and now tensioning mechanism can from re-tensioning driving belt.In fig. 2, tensioning mechanism is monolateral tensioning, due to the change of environment, can be there is same change in both sides driving belt length, due to the automatic regulation function of tensioning mechanism, the monolateral driving belt length that tensioning mechanism is housed can change along with the change of whole driving belt length, and do not have the monolateral driving belt length of tensioning mechanism constant, thus produce unnecessary tensioning rotation, and produce driving error, reduce the transmission accuracy of driving mechanism.
Summary of the invention
The present invention is to solve provide a kind of structure simple, volume is little, adjustable steel V belt translation tensioning mechanism easy to adjust.
For solving the problems of the technologies described above, tensioning mechanism provided by the invention comprises pedestal, two tensioning shaft combinations, two press spring bases, two stage clips, two plug screws, two plug screw seats, two cover plates; Described press spring base is the assembly parts of the inverted U-shaped body of rectangle and cylindrical body, and cylindrical body is connected on the outer end face of inverted U-shaped body, and the bottom of the two side of inverted U-shaped body is with arc groove; One end of plug screw seat is with flange; Described pedestal contains two rectangular U-shape bodies and an obtuse angle broken line plate, two sidewalls of described rectangular U-shape body all has U-shaped groove, is connected respectively bottom the first side wall with the two ends of obtuse angle broken line plate; Described tensioning shaft combination comprises bearing, tensioning shaft and trim ring, tensioning shaft one end is with runway round convex, and namely the upper and lower surfaces of this convex are arc surface, and another two sides are plane, bearing is arranged on the middle part of tensioning shaft, and trim ring is threaded with the other end of tensioning shaft; Two tensioning shaft combinations lay respectively in two rectangular U-shape bodies of described pedestal, two opposing sidewalls of the U-shaped groove wherein on two opposite side planes of runway round convex and rectangular U-shape body the first side wall coordinate, and the trim ring end of tensioning shaft combination is arranged in the U-shaped groove on rectangular U-shape body second sidewall; Described cover plate is fixed on rectangular U-shape body second wall outer surface; Described press spring base is arranged on the top of tensioning shaft combination, wherein on two arc grooves of press spring base arc surface of being pressed in runway round convex respectively and trim ring; Described plug screw seat is positioned at the top of press spring base, and the upper-end surface of the flange of plug screw seat and rectangular U-shape body is connected; Described stage clip is arranged in the endoporus of plug screw seat and press spring base; Described plug screw screws in the screw of plug screw seat, makes the two ends of stage clip withstand on the top of the inverted U-shaped body of rectangle and the lower end surface of plug screw of press spring base respectively.
In the present invention, the bearing in described tensioning shaft combination is two index zone shaft shoulder ball bearings, and two bearing shaft shoulders are mounted opposite outwardly at the middle part of described tensioning shaft.
Beneficial effect of the present invention is embodied in the following aspects.
(1) in the present invention, pedestal is with two symmetrical rectangular U-shape bodies and an obtuse angle broken line plate.In use, two rectangular U-shape bodies straddle on the two sections steel band on steel belt driving mechanism, and the problem of unbalance stress when solving single hop pretension in prior art, improves steel band robust motion and working life; In addition, can adjust the tension force of two sections steel band simultaneously, two sections steel band length is consistent, compared with prior art, tensioning mechanism of the present invention can not produce unnecessary tensioning and rotate, thus improves the transmission accuracy of steel belt driving mechanism.
(2) the present invention is provided with plug screw above stage clip, by rotating plug screw, can regulating the position of stage clip, when not changing steel belt driving mechanism position, can realize the re-tensioning to steel band.
(3) adopt the master ball bearing of the band shaft shoulder, the shaft shoulder can the swinging of steel band in constrained motion, and play the guiding role to the motion of steel band, thus further increase robust motion and the working life of steel band.
Accompanying drawing explanation
Fig. 1 is the tension pulley mechanism schematic diagram in open source information.
Fig. 2 is the automatic tensioning mechanism schematic diagram in open source information.
Fig. 3 is the structure composition schematic diagram of tensioning mechanism symplex structure one end of the present invention.
Fig. 4 is the explosive view of tensioning mechanism symplex structure one end of the present invention.
Fig. 5 is the structural representation of pedestal.
Fig. 6 is the composition schematic diagram of tensioning shaft combination.
Fig. 7 is the present invention and steel belt driving mechanism relation schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, tensioning mechanism of the present invention is described in further detail.
As shown in Figure 3, Figure 4, tensioning mechanism of the present invention comprises pedestal 4, two tensioning shaft combinations A, two press spring bases, 8, two stage clips, 9, two plug screws, 10, two plug screw seats, 11, two cover plates 12.
Press spring base 8 is the assembly parts of the inverted U-shaped body of rectangle and cylindrical body, and cylindrical body is connected on the outer end face of inverted U-shaped body, and the bottom of the two side of inverted U-shaped body is with arc groove.Stage clip 9 is Ordinary Compression spring.There is square flange one end of plug screw seat 11, and square flange is provided with four through holes.The end face corner of cover plate 12 is equipped with through hole.
As shown in Figure 5, pedestal 4 is the mounting base of whole tensioning mechanism, it contains two rectangular U-shape bodies and an obtuse angle broken line plate, be connected with the two ends of obtuse angle broken line plate respectively bottom the first side wall of two rectangular U-shape bodies, two sidewalls all have U-shaped groove 4-1, wherein the U-shaped groove 4-1 of the first side wall is not penetrating U-shaped groove, the U-shaped groove 4-1 of the second sidewall is penetrating U-shaped groove, second wall outer surface of rectangular U-shape body is provided with the screw corresponding with four through holes on cover plate 12, the upper-end surface of two sidewalls of rectangular U-shape body is respectively provided with two screws, and these four screwhole positions are corresponding with four lead to the hole site of the square flange of plug screw seat 11.
As shown in Figure 6, tensioning shaft combination A comprises two bearings, 5, tensioning shaft 6 and a trim ring 7.Bearing 5 is index zone shaft shoulder ball bearing.Tensioning shaft 6 one end is with runway round convex 6-1, and namely the upper and lower surfaces of this convex 6-1 are arc surface, and another two sides are plane, and tensioning shaft 6 the other end is with outside thread.Trim ring 7 is tapped trim ring.Two bearing 5 shaft shoulders, are mounted opposite the middle part at tensioning shaft 6 outwardly, and trim ring 7 is connected with the threaded end of tensioning shaft 6, to be pressed on tensioning shaft 6 by two bearings 5, form tensioning shaft combination A thus.Master ball bearing 5 with the shaft shoulder can be selected according to the width of steel band 1, and two shaft shoulders can the swinging of steel band 1 in constrained motion, has leading role to the motion of steel band.
Again see shown in Fig. 3 and Fig. 4, two tensioning shaft combination A lay respectively in the rectangular U-shape body of pedestal 4, two opposing sidewalls of the U-shaped groove 4-1 wherein on two opposite side planes of runway round convex 6-1 and rectangular U-shape body the first side wall coordinate, and the trim ring end of tensioning shaft combination A is arranged in the U-shaped groove 4-1 on rectangular U-shape body second sidewall; Cover plate 12 is screwed on rectangular U-shape body second wall outer surface; Press spring base 8 is arranged on the top of tensioning shaft combination A, wherein on two arc grooves of press spring base 8 arc surface of being pressed in runway round convex 6-1 respectively and trim ring 7; Plug screw seat 11 is positioned at the top of press spring base 8, and the upper-end surface of the square flange of plug screw seat 11 and rectangular U-shape body is connected by screw, wherein, the endoporus of plug screw seat 11 and the endoporus of press spring base 8 just right; Stage clip 9 is arranged in the endoporus of plug screw seat 11 and press spring base 8; Plug screw 10 screws in the screw of plug screw seat 11, the end face under making the two ends of stage clip 9 withstand on the top of the inverted U-shaped body of rectangle of press spring base 8 and plug screw 10 respectively.
During use, be arranged on steel belt driving mechanism by steel band pre-tightening mechanism of the present invention, wherein two rectangular U-shape bodies lay respectively on two sections of steel bands between steel belt driving mechanism driving wheel 3 and follower 2.In debuging before real work, pre-set the position of plug screw 10, make, with the steel band 1 of the outer loop contacts of bearing 5, there is moderate tension force.
Working method of the present invention is further illustrated below for a rectangular U-shape body.
When steel belt driving mechanism works, steel band 1 moves under the drive of driving wheel, the outer shroud of the bearing 5 contacted with steel band 1 is also along with steel band 1 rotates together, and coordinate due to two opposing sidewalls of the U-shaped groove 4-1 in two opposite side planes of the convex 6-1 on tensioning shaft 6 and rectangular U-shape body the first side wall, therefore tensioning shaft 6 non rotating.Along with the change of external environment condition, steel band 1 meeting rising-heat contracting-cold, causes its length to change.If steel band 1 shortens, then the tension force it is subject to will become large, driving tensioning shaft combination A upward sliding in two U-shaped groove 4-1 of rectangular U-shape body thus, finally making tension force suffered on steel band 1 moderate from becoming greatly.If steel band 1 is elongated, then the tension force it is subject to will diminish, and causes stage clip 9 to extend thus and drives tensioning shaft to combine A slide downward in two U-shaped groove 4-1 of rectangular U-shape body, finally make tension force suffered on steel band 1 from little become moderate.
After steel belt driving mechanism Long-Time Service, often there is larger change in the length of steel band 1, only the automatic adjustment of pressured spring 9 cannot ensure that steel band 1 has moderate tension force, can, by readjusting the position of plug screw 10, make steel band 1 have moderate tension force.
Claims (2)
1. a straddle-type adjustable steel V belt translation tensioning mechanism, comprise pedestal (4), tensioning shaft combination (A), press spring base (8) and stage clip (9), it is characterized in that: also comprise two plug screws (10), two plug screw seats (11) and two cover plates (12), described tensioning shaft combination (A), press spring base (8) and stage clip (9) are two, the assembly parts that described press spring base (8) is the inverted U-shaped body of rectangle and cylindrical body, cylindrical body is connected on the outer end face of the inverted U-shaped body of rectangle, the bottom of the two side of the inverted U-shaped body of rectangle is with arc groove, one end of plug screw seat (11) is with flange, described pedestal (4) is containing two rectangular U-shape bodies and an obtuse angle broken line plate, two sidewalls of described rectangular U-shape body all have U-shaped groove (4-1), wherein the U-shaped groove of the first side wall is not penetrating U-shaped groove, the U-shaped groove of the second sidewall is penetrating U-shaped groove, is connected respectively bottom the first side wall with the two ends of obtuse angle broken line plate, described tensioning shaft combination (A) comprises bearing (5), tensioning shaft (6) and trim ring (7), tensioning shaft (6) one end is with runway round convex (6-1), namely the upper and lower surfaces of this convex (6-1) are arc surface, another two sides are plane, bearing (5) is arranged on the middle part of tensioning shaft (6), and trim ring (7) is threaded with the other end of tensioning shaft (6), two tensioning shafts combination (A) lay respectively in two rectangular U-shape bodies of described pedestal (4), two opposing sidewalls of the U-shaped groove wherein on two opposite side planes of runway round convex (6-1) and rectangular U-shape body the first side wall coordinate, and the trim ring end of tensioning shaft combination (A) is arranged in the U-shaped groove on rectangular U-shape body second sidewall, described press spring base (8) is arranged on the top of tensioning shaft combination (A), wherein on two arc grooves of press spring base (8) arc surface of being pressed in runway round convex (6-1) respectively and trim ring (7), described plug screw seat (11) is positioned at the top of press spring base (8), and the flange of plug screw seat (11) and the upper-end surface of rectangular U-shape body are connected, described stage clip (9) is arranged in the endoporus of plug screw seat (11) and press spring base (8), described plug screw (10) screws in the screw of plug screw seat (11), makes the two ends of stage clip (9) withstand on the top of the inverted U-shaped body of rectangle of press spring base (8) and the lower end surface of plug screw (10) respectively.
2. straddle-type adjustable steel V belt translation tensioning mechanism according to claim 1, it is characterized in that: the bearing (5) in described tensioning shaft combination (A) is two index zone shaft shoulder ball bearings, two bearing (5) shaft shoulders are mounted opposite the middle part in described tensioning shaft (6) outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215512.5A CN103307234B (en) | 2013-05-31 | 2013-05-31 | Straddle-type adjustable steel V belt translation tensioning mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215512.5A CN103307234B (en) | 2013-05-31 | 2013-05-31 | Straddle-type adjustable steel V belt translation tensioning mechanism |
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| Publication Number | Publication Date |
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| CN103307234A CN103307234A (en) | 2013-09-18 |
| CN103307234B true CN103307234B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310215512.5A Active CN103307234B (en) | 2013-05-31 | 2013-05-31 | Straddle-type adjustable steel V belt translation tensioning mechanism |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0030169A1 (en) * | 1979-11-28 | 1981-06-10 | Automobiles Peugeot | Tensioning device and method for a continuous transmission band |
| CN2206869Y (en) * | 1994-12-18 | 1995-09-06 | 孙明昭 | Tension pulley block for belt transmission |
| DE19516001A1 (en) * | 1995-05-02 | 1996-11-07 | Amazone Machines Agricoles Sa | Mower drive with V=belt tension roller |
| CN1468348A (en) * | 2000-10-03 | 2004-01-14 | �Ǵĺ�˾ | Dual linear belt tensioner |
| DE102004016353A1 (en) * | 2004-04-02 | 2005-10-27 | Ina-Schaeffler Kg | Method and device for biasing a traction mechanism drive of an internal combustion engine |
| WO2009062734A1 (en) * | 2007-11-16 | 2009-05-22 | Ketten Wulf Betriebs-Gmbh | Drive means and chain drive |
| CN102308121A (en) * | 2010-04-28 | 2012-01-04 | 三菱重工业株式会社 | Driving force transmission device and method for adjusting same |
-
2013
- 2013-05-31 CN CN201310215512.5A patent/CN103307234B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0030169A1 (en) * | 1979-11-28 | 1981-06-10 | Automobiles Peugeot | Tensioning device and method for a continuous transmission band |
| CN2206869Y (en) * | 1994-12-18 | 1995-09-06 | 孙明昭 | Tension pulley block for belt transmission |
| DE19516001A1 (en) * | 1995-05-02 | 1996-11-07 | Amazone Machines Agricoles Sa | Mower drive with V=belt tension roller |
| CN1468348A (en) * | 2000-10-03 | 2004-01-14 | �Ǵĺ�˾ | Dual linear belt tensioner |
| DE102004016353A1 (en) * | 2004-04-02 | 2005-10-27 | Ina-Schaeffler Kg | Method and device for biasing a traction mechanism drive of an internal combustion engine |
| WO2009062734A1 (en) * | 2007-11-16 | 2009-05-22 | Ketten Wulf Betriebs-Gmbh | Drive means and chain drive |
| CN102308121A (en) * | 2010-04-28 | 2012-01-04 | 三菱重工业株式会社 | Driving force transmission device and method for adjusting same |
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| CN103307234A (en) | 2013-09-18 |
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