CN104110467A - Water-cooling dynamic-balance small-tooth difference reduction gearbox of plastic extruder - Google Patents

Water-cooling dynamic-balance small-tooth difference reduction gearbox of plastic extruder Download PDF

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Publication number
CN104110467A
CN104110467A CN201410282895.2A CN201410282895A CN104110467A CN 104110467 A CN104110467 A CN 104110467A CN 201410282895 A CN201410282895 A CN 201410282895A CN 104110467 A CN104110467 A CN 104110467A
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China
Prior art keywords
cylinder
built
water
casing
box body
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Pending
Application number
CN201410282895.2A
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Chinese (zh)
Inventor
吴声震
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Individual
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Individual
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Priority to CN201410282895.2A priority Critical patent/CN104110467A/en
Publication of CN104110467A publication Critical patent/CN104110467A/en
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Classifications

    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
    • B29C48/2526—Direct drives or gear boxes
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • 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
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02091—Measures for reducing weight of gearbox

Abstract

The invention relates to the technical field of special reduction gearboxes for a plastic extruder, in particular to a water-cooling dynamic-balance small-tooth difference reduction gearbox of the plastic extruder. The water-cooling dynamic-balance small-tooth difference reduction gearbox comprises a box body and an involute small-tooth difference transmission assembly arranged inside the box body. The water-cooling dynamic-balance small-tooth difference reduction gearbox is characterized in that a built-in cylinder is arranged inside the box body; a flange of the built-in cylinder is connected with the box body; a water storage cavity is formed between the outer surface of the built-in cylinder and the box body; the box body is provided with a water inlet valve and a water outlet valve; a thermometer is arranged at a water outlet; the built-in cylinder is connected with a cylinder end cover; an outer circle of the input end of the cylinder end cover and an inner bore of the input end of the box body are in close fit and are connected through the same annular disc; among four identical plant gears, phase difference between the plant gears on the two sides and the middle plant gears is 180 degrees, and an inner gear ring is fastened in the built-in cylinder. The water-cooling dynamic-balance small-tooth difference reduction gearbox has the advantages that the cycloid gears are high in overload capacity and can realize static balance and dynamic balance, so that transmission is more stable; theoretically, the planetary transmission box body is several times lighter than a fixed-axis transmission box body, and it is indicated by calculation that the weight is reduced by 50 percent to 60 percent; a water-cooling structure is simple, so that control and adjustment are convenient, reliability is high, and the manufacturing cost is low.

Description

The motor-driven balance few teeth difference of water-cooled plastic extrusion speed reducer
[technical field]
The present invention relates to plastic extruder special retarding technical field, is the improvement of prior art ZLYJ type parallel axis hard-tooth surface Special reducer for plastic extruder, the motor-driven balance few teeth difference of a kind of water-cooled plastic extrusion speed reducer.
[background technique] prior art ZLYJ plastic speed reducer special for extruder, be ZLY type two-stage parallel axis hard-tooth surface gear reducer thrust-bearing is set, in order to bear the improvement type of plastics machine screw axial power, be the largest domestic speed reducer Guo Mao of private enterprise speed reducer group in the main product of 2010.6 releases, company claims: " ZLYJ plastic speed reducer special for extruder has that volume is little, bearing capacity is high, stable drive, noise are low, efficiency high." according to speed reducer industry statistics, ZLYJ plastic speed reducer special for extruder, is that one of special reduction gear product that the amount of having is maximum, imitation producer is maximum is estimated in existing Domestic market.
Research discovery, there is following two large problems in ZLYJ plastic speed reducer special for extruder:
(1) in the plastic barrel that speed reducer front end connects, screw rod, in the condition of high temperature, causes oil temperature in decelerating chassis to rise, thereby the oily circulating cooler of pressure must be set, so that additionally increased manufacture cost and increased complete machine weight;
(2) the lightweight degree of the driving of parallel axes is lower than Gear Planet Transmission, and Gear Planet Transmission comprises planet and the large class of few teeth difference (involute and cycloid) two.The theoretical explanation that Gear Planet Transmission lightweight degree is high sees following authoritative monograph:
(1) < < gear handbook > > (1-4 page): " Gear Planet Transmission has substituted a collection of parallel axes structure driven form; this is because Gear Planet Transmission adopts several planet wheels transfer charges simultaneously; and utilized the combining form of interior engagement, thereby there is the advantages such as bearing capacity is high, volume is little, lightweight, efficiency is high, noise is little.”
(2) Zhu's filial piety record < < Gear Transmission Design handbook > > is 660 pages: " Gear Planet Transmission is compared with fixed shaft gear train, has that volume is little, lightweight, gear range is large, efficiency is high and the advantage such as stable working.Gear Planet Transmission has substituted a collection of parallel axes structure driven form, this is because Gear Planet Transmission adopts several planet wheels transfer charge simultaneously, and utilized the combining form of interior engagement, thereby there is the advantages such as bearing capacity is high, volume is little, lightweight, efficiency is high, noise is little.”
(3) face is thought strong < < involute planet gear driven Design and manufacture > >: " involute planet gear transmission is compared with common fixed axis gear transmission; have that bearing capacity is large, volume is little, efficiency is high, lightweight, noise is little, reliability is high, the life-span is long, be convenient to the advantages such as maintenance ... Gear Planet Transmission has been widely used in metallurgy, mine, cement, lifting, chemical industry etc. mechanically.The casing of Gear Planet Transmission is than the casing of common fixed axis gear transmission under similarity condition, and it is little several times that its weight is wanted, because planet cage body overall sizes is little more a lot of than the casing of common fixed axis gear transmission.”
Background technique is pointed out, improve the speed reducer dedicated lightweight degree of plastic extruder, the driving of parallel axes of prior art must be improved to Gear Planet Transmission.
The calculated example of 7-126 page on < < gear handbook > >: involute less tooth difference efficiency eta=0.944 (Z d=2);
The inventor is according to 100 examples (tooth difference Z d=2,3,4) calculating, draws following result: efficiency eta=0.934 (Z d=2), 0.96 (Z d=3), 0.97 (Z d=4), thus single-stage involute less tooth difference can replace the transmission of background technique secondary parallel-axes gears.
Involute Small Teeth Difference Planetary Gearing technical characteristics is known completely for those skilled in the art, and prior art ZLYJ speed reducer special for extruder reduction speed ratio little (i=16) therefore, can adopt the poor (Z of four teeth d=4) can obtain higher transmission efficiency: η=0.97..
Attached: Reducer With Involute Gear of Less-tooth Difference of the present invention and prior art ZLYJ type speed reducer profile and weight comparison sheet
Four planetary gear structures " remarkable advantage is: both sides ring flat-plate uniform thickness, and because both sides ring flat-plate and middle two ring flat-plate phase angles differ 180 °, thereby can realize under dynamic equilibrium state and turning round, transmission is steady especially." (project of national nature science fund project that < < Dual-motors Driving double-crank Fourth Ring board-like pin pendulum Gear Planet Transmission research > > Dalian University Of Communications bears, fund approval number: 50175011)
The technological means of implementing:
Built-in cylinder flange is fastened on casing, on end face outside its casing, connect charging barrel of plastic extruder, and band radiating fin one side forms storage cooling water cavity in casing and between casing, casing is provided with water-in and water-out valve, temperature rise with driving component in the cooling built-in cylinder of tap water, osculum place is separately provided with water temperature instrument, is the most simply thermometer;
Built-in cylinder input end connects cylinder end cap, cylinder end cap input end and casing input end close-fitting, and the two connects with circle ring disk, makes the built-in cylinder the other end be fixed on casing input end;
Built-in cylinder output terminal joining shaft bearing, the outer ring of thrust roller bearing is located in bearing support, its inner ring end face is spacing by the cylinder being enclosed within on output shaft, Cylindorical rod is to spacing by the circular ring cover being connected on bearing support, the afterbody of extruder screw connects with output shaft endoporus, and the shaft shoulder of extruder screw is close to cylinder end face;
Four planet wheels can be realized in dynamic balancing and turning round; Ring gear is connected in built-in cylinder, can not produce tilting moment.
[beneficial effect] each independent technical characteristics is supported each other, and can be produced the useful technique effect known to those skilled in the art:
(1) have that bearing capacity is large, volume is little, efficiency is high, noise is little and be convenient to the advantages such as maintenance;
(2) Gear Planet Transmission casing is less several times than the weight of ordinary transmission in theory, and calculating shows: lightweight 40-55%;
(3) water temperature cooling structure is simple, thereby control, easy to adjust, reliability is high, low cost of manufacture.
[summary of the invention]
The object of the invention is to provide by water-cooled and substitutes forced oil cooling radiator cooler reducing manufacture cost, with the planetary gear train with a small tooth difference of multiple tooth engagement, replace the existing ZLYJ driving of parallel axes, to improve the lightweight degree of retarder: bearing capacity is large, volume is little, lightweight, the motor-driven balance few teeth difference of a kind of water-cooled plastic extrusion speed reducer.
For achieving the above object, its implementer's case and theoretical foundation are as follows:
The present invention be take modern Involute Small Teeth Difference Planetary Gearing as basis, in conjunction with common practise such as tap water cooling heat dissipation, survey water temperature instrument and apparatus, connecting modes, has formed the present patent application claim required for protection.
[accompanying drawing explanation] Fig. 1. embodiment of the present invention structural representation
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. the motor-driven balance few teeth difference of a kind of water-cooled plastic extrusion speed reducer, comprise the few teeth difference driving component in casing 1 and casing, described few teeth difference driving component comprises built-in cylinder 2, planet wheel, ring gear 12, input shaft 16, capacity eccentric bearing 14 on input shaft 16 and w output mechanism, described w output mechanism comprises pin and output shaft 8, described output shaft 8 use clutch shaft bearings 3 are bearing in built-in cylinder 2 output terminal endoporus, before described clutch shaft bearing 3, be provided with bearing support 7, described bearing support 7 endoporus coordinate with the outer ring of thrust roller bearing 4, outside the inner ring of described thrust roller bearing 4, end face is spacing by thrust cylinder 5, described thrust cylinder 5 is enclosed within on output shaft 8, described thrust cylinder 5 axially spacing by circular ring cover 6, joining shaft bearing 7 and circular ring cover 6 in turn on described built-in cylinder 2 output end faces, described output shaft 8 endoporus connect the afterbody of extruder screw, described input shaft 16 use the second bearings 15 are bearing in cylinder end cap 13 endoporus, it is characterized in that:
On the end face of described casing 1 output terminal, connect built-in cylinder 2 flanges, described built-in cylinder 2 forms with a side of radiating fin the cavity that stores cooling water in casing 1 and between casing, it is placed in the barrel of the cylinder end face connection plastic extruder outside casing 1, with driving component temperature rise in the cooling built-in cylinder of tap water, technique effect is that cost is low and temperature control is reliable;
Described casing 1 has an inlet valve screw 9, below to have an outlet valve screw 18 above, and outlet valve place separately establishes the instrument and apparatus of a measurement water temperature, according to the variation of water temperature, so that regulate at any time inflow to carry out temperature control;
Described built-in cylinder 2 input end end faces connect cylinder end cap 13, the input end cylindrical of described cylinder end cap 13 and casing 1 input end endoporus close-fitting, described cylinder end cap 13 input end faces connect with same circle ring disk 17 with the nose circle face of casing 1 input end, make the freely supported structure of built-in cylinder in two-side supporting;
Described planet wheel is four wheels that parameter is identical, phase place differs, wherein: planet wheel 10 phase places in both sides are identical, middle two planet wheel 11 phase places are identical, both sides planet wheel 10 and 180 ° of middle two planet wheel 11 phase differences, advantage is to realize quiet, dynamic balancing, makes transmission more steady;
Described ring gear 12 is fastened on the input end endoporus of built-in cylinder 2, makes the active force of inside and outside gear teeth meshing pair point to casing 1 footing and can not produce tilting moment.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, any scheme after simple transformation of the present invention is all belonged to protection scope of the present invention.

Claims (1)

1. the motor-driven balance few teeth difference of a water-cooled plastic extrusion speed reducer, comprise the few teeth difference driving component in casing (1) and casing, described few teeth difference driving component comprises built-in cylinder (2), planet wheel, ring gear (12), input shaft (16), capacity eccentric bearing (14) and w output mechanism on input shaft (16), described w output mechanism comprises pin and output shaft (8), described output shaft (8) is bearing in built-in cylinder (2) output terminal endoporus with clutch shaft bearing (3), described clutch shaft bearing (3) is provided with bearing support (7) before, described bearing support (7) endoporus coordinates with the outer ring of thrust roller bearing (4), outside the inner ring of described thrust roller bearing (4), end face is spacing by thrust cylinder (5), described thrust cylinder (5) is enclosed within on output shaft (8), described thrust cylinder (5) axially spacing by circular ring cover (6), joining shaft bearing (7) and circular ring cover (6) in turn on described built-in cylinder (2) output end face, described output shaft (8) endoporus connects the afterbody of extruder screw, described input shaft (16) is bearing in cylinder end cap (13) endoporus with the second bearing (15), it is characterized in that:
On the end face of described casing (1) output terminal, connect built-in cylinder (2) flange, described built-in cylinder (2) forms with a side of radiating fin the cavity that stores cooling water in casing (1) and between casing, it is placed in the barrel of the cylinder end face connection plastic extruder outside casing (1);
Described casing (1) has an inlet valve screw (9), below to have an outlet valve screw (18) above, and outlet valve place separately establishes the instrument and apparatus of a measurement water temperature;
Described built-in cylinder (2) input end end face connects cylinder end cap (13), the input end cylindrical of described cylinder end cap (13) and casing (1) input end endoporus close-fitting, described cylinder end cap (13) input end face connects with the same circle ring disk for nose circle face (17) of casing (1) input end;
Described planet wheel is four wheels that parameter is identical, phase place differs, wherein: both sides planet wheel (10) phase place is identical, middle two planet wheels (11) phase place is identical, both sides planet wheel (10) and 180 ° of middle two planet wheels (11) phase differences;
Described ring gear (12) is fastened on the input end endoporus of built-in cylinder (2).
CN201410282895.2A 2014-06-15 2014-06-15 Water-cooling dynamic-balance small-tooth difference reduction gearbox of plastic extruder Pending CN104110467A (en)

Priority Applications (1)

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CN201410282895.2A CN104110467A (en) 2014-06-15 2014-06-15 Water-cooling dynamic-balance small-tooth difference reduction gearbox of plastic extruder

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CN201410282895.2A CN104110467A (en) 2014-06-15 2014-06-15 Water-cooling dynamic-balance small-tooth difference reduction gearbox of plastic extruder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090378A (en) * 2015-08-19 2015-11-25 钱达 Harmonic speed reduction method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2415209Y (en) * 1999-11-23 2001-01-17 陶刚 Jacket water-cooled continuous casting withdrawal straightening machine speed reducer
CN102889341A (en) * 2011-07-17 2013-01-23 吴小杰 Large star wheel gear box

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2415209Y (en) * 1999-11-23 2001-01-17 陶刚 Jacket water-cooled continuous casting withdrawal straightening machine speed reducer
CN102889341A (en) * 2011-07-17 2013-01-23 吴小杰 Large star wheel gear box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090378A (en) * 2015-08-19 2015-11-25 钱达 Harmonic speed reduction method and device

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Application publication date: 20141022