CN103791062B - Diameter changeable pulley - Google Patents
Diameter changeable pulley Download PDFInfo
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- CN103791062B CN103791062B CN201310752129.3A CN201310752129A CN103791062B CN 103791062 B CN103791062 B CN 103791062B CN 201310752129 A CN201310752129 A CN 201310752129A CN 103791062 B CN103791062 B CN 103791062B
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- diameter
- arc surface
- slide block
- pulley
- loop
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/54—Pulleys or friction discs of adjustable construction of which the bearing parts are radially adjustable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a kind of diameter changeable pulley.This belt pulley comprises: guide collar, and outer circumferential face circumference evenly offers multiple axially extended guiding square hole; End cap, it is step ladder circular ring shape; Mandrel, it is straight-tube shape; Slide block, its outer circumferential face is tapered, and offers the multiple inclination dovetail grooves corresponding with the guiding square hole of guide collar; Loop, it is the polylith being spliced into diameter, and each piece of loop comprises respectively: arc surface and the inclination dovetail tooth being laid in arc surface inner peripheral surface, forms the expanding or undergauge of arc surface splicing diameter; Compress Spring one end props up the large end of slide block, and the other end props up inside end cap.This diameter changeable pulley is simple and reasonable, simple and reasonable, by under the elastic force effect of spring, slide block slides along mandrel, thus promote loop radially spreading, obtaining more approximate diameter makes diameter pulley size adjustable, can realize wheel train belt tensioning, guarantee the normal operation of diesel engine belt pulley system.
Description
Technical field
The present invention relates to belt pulley field, particularly a kind of diameter changeable pulley.
Background technique
Belt pulley belongs to hub class part, is the device that field of industrial production is conventional, particularly at diesel engine arts.Existing belt pulley generally adopts cast inblock or forging in manufacturing process.What stock size was larger is designed to the method using casting, and material is all generally cast iron (castability is better), seldom uses cast steel (castability of steel is not good); Stock size is less, can be designed as forging, and material is steel.
Belt pulley is mainly used in the occasion of Long Distant Transmit power, such as the output of miniature diesel mechanomotive force.Because existing belt pulley adopts cast inblock or forging, its diameter is unadjustable, can only by regulating tensioning idle pulley or the tensioning of threaded adjusting support when causing belt pulley to wear and tear, and adjustment operation is complicated, and before adjustment, easily affect the normal operation of diesel engine belt pulley system.In addition, change belt difficulty in a tensioned state, change efficiency low.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, and provide a kind of simple and reasonable, diameter is adjustable, can realize wheel train belt tensioning, guarantee the diameter changeable pulley of the normal operation of diesel engine belt pulley system.
For achieving the above object, according to the invention provides a kind of diameter changeable pulley, comprising:
Guide collar, cylindrically, both ends open, and respectively there is radial flange; Outer circumferential face circumference evenly offers multiple axially extended guiding square hole;
End cap, it is step ladder circular ring shape, the diameter of inner side roundel and the internal orifice dimension adaptation of guide collar, and its card, annulus internal orifice dimension offer adjustment tapped hole respectively to two ends;
Mandrel, it is straight-tube shape;
Slide block, it is circular cone tubular, and the external diameter of internal aperture and mandrel is adaptive; Its outer circumferential face is tapered, and offers the multiple inclination dovetail grooves corresponding with the guiding square hole of guide collar;
Loop, it is the polylith being spliced into diameter, and each piece of loop comprises respectively: arc surface and the inclination dovetail tooth being laid in arc surface inner peripheral surface, and arc surface outer circumferential face has belt grooves, the dovetail groove of dovetail tooth and slide block is slidably matched, and forms the expanding or undergauge of arc surface splicing diameter;
Compress Spring one end props up the large end of slide block, and the other end props up inside end cap.
In technique scheme, guiding square hole, dovetail groove and dovetail tooth are four.
In technique scheme, arc surface is 1/4 arc surface.
In technique scheme, arc surface one end has rectangular insert, and the other end has the rectangular slot with rectangular insert adaptation.
In technique scheme, mandrel endoporus is unthreaded hole or perforation.
Compared with prior art, the present invention has following beneficial effect: this diameter changeable pulley is simple and reasonable, simple and reasonable, by under the elastic force effect of spring, slide block slides along mandrel, thus promote loop radially spreading, obtain more approximate diameter and make diameter pulley size adjustable, wheel train belt tensioning can be realized, guarantee the normal operation of diesel engine belt pulley system.In addition, under the promotion of bolt of cover, slide block is along mandrel reverse slide, make loop radially shrink the less approximate diameter of acquisition be convenient to belt realize in a relaxed state assembling, thus pivoted arm tensioning idle pulley or the tensioning of threaded adjusting support need not be re-used, reduce regulating step, improve and regulate efficiency.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of diameter changeable pulley of the present invention;
Fig. 2 is the side-looking structural representation of diameter changeable pulley of the present invention;
Fig. 3 is the guide collar side-looking structural representation of diameter changeable pulley of the present invention;
Fig. 4 is the guide collar sectional structure schematic diagram of diameter changeable pulley of the present invention;
Fig. 5 is the end cover structure schematic diagram of diameter changeable pulley of the present invention;
Fig. 6 is the mandrel side-looking structural representation of diameter changeable pulley of the present invention;
Fig. 7 is the mandrel sectional structure schematic diagram of diameter changeable pulley of the present invention;
Fig. 8 is the slide block side-looking structural representation of diameter changeable pulley of the present invention;
Fig. 9 is the slide block sectional structure schematic diagram of diameter changeable pulley of the present invention;
Figure 10 is the main TV structure schematic diagram of loop of diameter changeable pulley of the present invention;
Figure 11 is the loop plan structure schematic diagram of diameter changeable pulley of the present invention;
Description of reference numerals:
1-guide collar, 11-radial flange, 12-leads square hole, and 2-end cap, 21-regulates tapped hole, 3-mandrel, 31-endoporus, 4-slide block, 41-dovetail groove, 5-spring, 6-loop, 61-arc surface, 62-dovetail tooth, 63-rectangular insert, 64-rectangular slot.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, "left", "right", " front " and " reverse side " all with the direction shown in each figure for benchmark, these words being used for limiting direction are only used to be convenient to illustrate, do not represent the restriction to the concrete technological scheme of the present invention.
Diameter changeable pulley of the present invention is simple and reasonable, simple and reasonable, by under the elastic force effect of spring, slide block slides along mandrel, thus promote loop radially spreading, obtaining more approximate diameter makes diameter pulley size adjustable, can realize wheel train belt tensioning, guarantee the normal operation of diesel engine belt pulley system.In addition, under the promotion of bolt of cover, slide block is along mandrel reverse slide, make loop radially shrink the less approximate diameter of acquisition be convenient to belt realize in a relaxed state assembling, thus pivoted arm tensioning idle pulley or the tensioning of threaded adjusting support need not be re-used, reduce regulating step, improve and regulate efficiency.
Be described through citing but unrestriced mode describes the disclosure in detail below, should be understood that various aspect of the present disclosure can by independent realization or the realization be combined with other aspects.This specification clearly enables those skilled in the art to manufacture and uses us to believe for new and non-obvious improvement, describe the application of some embodiments, alternative, modification, alternative and system, comprise the current best mode being considered to perform the inventive principle described in this specification.When describing element or feature and/or embodiment, be intended to represent that to have in element or feature one or more titled with " one " " one " " being somebody's turn to do " and " described ".Term " comprises " " comprising " and " having " is intended to be comprising property, and represents also have extra element or feature beyond those specifically described elements or feature.
As depicted in figs. 1 and 2, the concrete structure of this diameter changeable pulley comprises: guide collar 1, end cap 2, mandrel 3, slide block 4, spring 5 and loop 6.End cap 2 is a pair, and be located in mandrel 3 two ends respectively, the endoporus of its outer rim and guide collar is fixed, to form the reducing space of loop 6.Mandrel 3 is slidably matched with the endoporus of slide block 4; Spring 5 one end is against slide block 4, and one end is against end cap 2; The dovetail tooth of loop 6 inserts the guiding square hole of guide collar 1, and be slidably connected with the dovetail groove of slide block 4, by under the elastic force effect of spring, slide block slides along mandrel, thus promote loop radially spreading, obtaining more approximate diameter makes diameter pulley size adjustable, can realize wheel train belt tensioning, guarantee the normal operation of diesel engine belt pulley system.
As shown in Figure 3 and Figure 4, guide collar 1 cylindrically, both ends open, and there is radial flange 11 respectively, the outer circumferential face circumference of guide collar 1 evenly offers multiple axially extended guiding square hole 12, the two ends of guiding square hole 12 extend to the radial flange 11 at guide collar 1 two ends respectively, and the guiding square hole 12 of the present embodiment is four.
As shown in Figure 5, end cap 2 is step ladder circular ring shape, and the diameter of inner side roundel and the internal orifice dimension adaptation of guide collar 1, the external diameter of annulus internal orifice dimension and mandrel 3 is adaptive.The card of end cap 2, annulus internal orifice dimension offer respectively to two ends and regulate tapped hole 21.
As shown in Figure 6 and Figure 7, mandrel 3 is straight-tube shape, and its endoporus 31 is unthreaded hole or perforation (with keyway in unthreaded hole).
As shown in Figure 8 and Figure 9, slide block 4 is circular cone tubular, and the external diameter of internal aperture and mandrel 3 is adaptive; Its outer circumferential face is tapered, and offers the multiple inclination dovetail grooves 41 corresponding with the guiding square hole 12 of guide collar 1, and the dovetail groove 41 of the present embodiment is four.
As shown in Figure 10 and Figure 11, loop 6 is for being spliced into the polylith of diameter.The loop 6 of the present embodiment is four pieces, each piece of loop 6 comprises respectively: arc surface 61 and the inclination dovetail tooth 62 being laid in arc surface 61 inner peripheral surface, arc surface 61 is 1/4 arc surface, outer circumferential face has belt grooves, one end has rectangular insert 63, the other end has the rectangular slot 64 with rectangular insert 63 adaptation, when four arc surfaces 61 are spliced into diameter, the rectangular insert 63 of adjacent two pieces of arc surfaces 61 inserts rectangular slot 64, when the now outside expanding formation of loop 6 is similar to diameter, make adjacent two pieces of arc surfaces 61 unlikely thoroughly separately, and then affect the transmission of belt.Dovetail tooth 62 is tilted to the other end by one end of arc surface 61, is slidably matched with the dovetail groove 41 of slide block 4, forms arc surface 61 and splices the expanding of diameter or undergauge.Slide block 4 slides axially, and loop 6 radially slides, and motion conversion is steadily reliable;
During assembling, first loop 6 is inserted the guiding square hole 12 of guide collar 1, be directed to square hole 12 guide and limit, radial direction slidably; Adjustment loop 6, draws mark between on slide block 4 two dovetail grooves 41, puts into slide block 4 from the endoporus of guide collar 1, and the dovetail tooth 61 of loop 6 is fastened and connected with the dovetail groove 41 of slide block 4; Penetrate mandrel 3 by the endoporus of slide block 4, at the large end cover people spring 5 of slide block 4, by the end cap 2 at frock pressing two ends, and make the screw 21 of end cap 2 see that slide block 4 identifies, pressing is welded, and checks loop 6 spreading situation.To screw on screw at the adjustment tapped hole 21 of end cap 2 after normal, promote slide block 4 Compress Spring 5 along mandrel 3 reverse slide, loop 6 is radially shunk and obtains less approximate diameter payment.
Due under the elastic force effect of spring 5, slide block 4 slides along mandrel 3, thus promotes loop 6 radially spreading, obtains more approximate diameter and makes this device possess belt tension function.On the contrary, end cap regulate tapped hole 21 promotion under, slide block 4 along mandrel 3 reverse slide, make loop 6 radially shrinks obtain less approximate diameter be convenient to belt realize in a relaxed state assemble.If certain indispensable annex uses this device in belt train and pivoted arm tensioning idle pulley or the tensioning of threaded adjusting support need not be re-used, reduce part, raise the efficiency.
To sum up, this diameter changeable pulley is simple and reasonable, simple and reasonable, by under the elastic force effect of spring, slide block slides along mandrel, thus promote loop radially spreading, obtain more approximate diameter and make diameter pulley size adjustable, wheel train belt tensioning can be realized, guarantee the normal operation of diesel engine belt pulley system.In addition, under the promotion of bolt of cover, slide block is along mandrel reverse slide, make loop radially shrink the less approximate diameter of acquisition be convenient to belt realize in a relaxed state assembling, thus pivoted arm tensioning idle pulley or the tensioning of threaded adjusting support need not be re-used, reduce regulating step, improve and regulate efficiency.
Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technological scheme described in the invention; Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent to replace; And all do not depart from technological scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in right of the present invention.
Claims (5)
1. a diameter changeable pulley, is characterized in that, comprising:
Guide collar, cylindrically, both ends open, and respectively there is radial flange; Outer circumferential face circumference evenly offers multiple axially extended guiding square hole;
End cap, it is step ladder circular ring shape, the diameter of inner side roundel and the internal orifice dimension adaptation of described guide collar, and its card, annulus internal orifice dimension offer adjustment tapped hole respectively to two ends;
Mandrel, it is straight-tube shape;
Slide block, it is circular cone tubular, and the external diameter of internal aperture and mandrel is adaptive; Its outer circumferential face is tapered, and offers the multiple inclination dovetail grooves corresponding with the guiding square hole of described guide collar;
Loop, it is the polylith being spliced into diameter, and each piece of loop comprises respectively: arc surface and the inclination dovetail tooth being laid in arc surface inner peripheral surface, and described arc surface outer circumferential face has belt grooves, the dovetail groove of described dovetail tooth and slide block is slidably matched, and forms the expanding or undergauge of arc surface splicing diameter;
Compress Spring one end props up the large end of slide block, and the other end props up inside end cap.
2. diameter changeable pulley according to claim 1, is characterized in that: described guiding square hole, dovetail groove and dovetail tooth are four.
3. diameter changeable pulley according to claim 2, is characterized in that: described arc surface is 1/4 arc surface.
4. diameter changeable pulley according to claim 1, is characterized in that: described arc surface one end has rectangular insert, and the other end has the rectangular slot with rectangular insert adaptation.
5. diameter changeable pulley according to any one of claim 1 to 4, is characterized in that: described mandrel endoporus is unthreaded hole or perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752129.3A CN103791062B (en) | 2013-12-31 | 2013-12-31 | Diameter changeable pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752129.3A CN103791062B (en) | 2013-12-31 | 2013-12-31 | Diameter changeable pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103791062A CN103791062A (en) | 2014-05-14 |
| CN103791062B true CN103791062B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752129.3A Active CN103791062B (en) | 2013-12-31 | 2013-12-31 | Diameter changeable pulley |
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| CN (1) | CN103791062B (en) |
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| CN106567914B (en) * | 2016-11-04 | 2019-02-22 | 长乐致远技术开发有限公司 | A kind of variable diameters belt pulley based on torque |
| CN109723707A (en) * | 2017-10-27 | 2019-05-07 | 河南奔马股份有限公司 | Hole attachment device |
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| CN108194589B (en) * | 2018-03-09 | 2024-06-14 | 武汉逸飞激光智能装备有限公司 | Expansion type belt pulley and continuously variable transmission |
| CN108486706A (en) * | 2018-05-24 | 2018-09-04 | 临沂市沃达机械有限公司 | A kind of big belt wheel for frame |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150030C1 (en) * | 1981-12-17 | 1983-07-21 | Jagenberg-Werke AG, 4000 Düsseldorf | Pulley |
| DE3151072A1 (en) * | 1981-12-23 | 1983-07-28 | Horst Dipl.-Ing. 4950 Minden Rathert | CONTINUOUSLY ADJUSTABLE CHAIN DRIVE FOR VEHICLES |
| US4913685A (en) * | 1988-03-14 | 1990-04-03 | Johann Lukatsch | Wheel with variable diameter |
| US5492506A (en) * | 1994-10-14 | 1996-02-20 | Lorance; R. Dennis | Continuously variable pulley |
| CN203614701U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Variable-diameter belt pulley |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305750A (en) * | 1994-05-12 | 1995-11-21 | Matsushita Electric Ind Co Ltd | Transmission |
-
2013
- 2013-12-31 CN CN201310752129.3A patent/CN103791062B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150030C1 (en) * | 1981-12-17 | 1983-07-21 | Jagenberg-Werke AG, 4000 Düsseldorf | Pulley |
| DE3151072A1 (en) * | 1981-12-23 | 1983-07-28 | Horst Dipl.-Ing. 4950 Minden Rathert | CONTINUOUSLY ADJUSTABLE CHAIN DRIVE FOR VEHICLES |
| US4913685A (en) * | 1988-03-14 | 1990-04-03 | Johann Lukatsch | Wheel with variable diameter |
| US5492506A (en) * | 1994-10-14 | 1996-02-20 | Lorance; R. Dennis | Continuously variable pulley |
| CN203614701U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Variable-diameter belt pulley |
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| Publication number | Publication date |
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| CN103791062A (en) | 2014-05-14 |
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