WO1989007722A1 - Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears - Google Patents

Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears Download PDF

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Publication number
WO1989007722A1
WO1989007722A1 PCT/IT1989/000005 IT8900005W WO8907722A1 WO 1989007722 A1 WO1989007722 A1 WO 1989007722A1 IT 8900005 W IT8900005 W IT 8900005W WO 8907722 A1 WO8907722 A1 WO 8907722A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
shaft
teeth
power
transmission device
Prior art date
Application number
PCT/IT1989/000005
Other languages
French (fr)
Inventor
Terenzio Bersano
Original Assignee
Terenzio Bersano
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terenzio Bersano filed Critical Terenzio Bersano
Publication of WO1989007722A1 publication Critical patent/WO1989007722A1/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
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts

Definitions

  • GEAR MECHANICAL TRANSMISSION DEVICE SUITABLE TO REALIZE A PERFECT DISTRIBUTION OF THE POWER FROM ONE MOTOR SHAFT TO A DRIVEN SHAFT. ACTING CONTEMPORARILY ON THE TEETH OF TWO RESPECTIVE INTERMEDIATE GEARS.
  • This invention relates -a gear mechanical transmission device, suitable to realize a pcrfecl distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears.
  • This invention as claimed has the object of arriving to the perfect equilibrium of the transmitted power on two teeth using only usual mechanical organs and a simple and economical construction.
  • a gear mechanical transmission device particularly suitable for biscrcw extruders, to realize a perfect distribution of the power from one motor driver shaft/gear to a driven gear-shaft, acting contemporarily on the teeth of two respective intermediate gears, characterized in that: - said driver shaft/gear and said driven shaft/gear are geared with two couples of intermediate side apart gears, said two couples of intermediate side apart gears being mounted in an free oscillating inlermcdiate frame; - said driver shaft/gear and said driven shaft/gear are supported in a relative rigid case/frame compared to said free oscillating intermediate frame.
  • Figure 1 is e schematic front view of the device in accordance with the invention.
  • Figure 2 is an axial semiscction of the device of Figure 1.
  • the power is transmitted from the motor (m) to the gear ( 1) connected to the driving shaft (1 '), that transmits by two teeth the power to the gears (2) and (3), that in their turn retransmit it to the gears (4) and (5) thai in their turn retransmit it to the gear (6) by two respective teeth. If the system should be rigid, it should not be innovating at all because, owing to the mechanical imperfections, the two engaged gear teeth (6) should be never in perfect contact and so the power should be really transmitted only on a tooth.
  • the gears ( 1 ) and (6) are rigidly assembled by their supports, in the box of the reduction-unit (9) and so they do not put in crisis neither the driving shaft (1 ) nor the resistant shaft (6), the two couple of gears (2) (3) (4) (5) with the supports rigidly assembled in the freely oscillating cage/frame (7) are free of taking the best position as regards of the gears (6) and (1) in order to guarantee a perfect mesh cither with the two teeth of the gear (] ) or with the 2 tcclh of the gear (6).
  • the cage or intermediate frame (7) is free of oscillating in order to find the exact gearing position eliminating automatically every working mechanical imperfection without the intermediate of any on l ine compensator.electrical, elastic or mechanical organ.

Abstract

Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor driver shaft/gear (1-1') to a driven gear-shaft (6), acting contemporarily on the teeth of two respective intermediate gears, characterized in that: said driver shaft/gear (1-1') and said driven shaft/gear (6) are geared with two couples of intermediate side apart gears (2-4; 3-5), said two couples of intermediate side apart gears being mounted in a free oscillating intermediate frame (7); said driver shaft/gear (1-1') and said driven shaft/gear (6) are supported in a relative rigid case/frame (9) compared to said free oscillating intermediate frame (7).

Description

GEAR MECHANICAL TRANSMISSION DEVICE. SUITABLE TO REALIZE A PERFECT DISTRIBUTION OF THE POWER FROM ONE MOTOR SHAFT TO A DRIVEN SHAFT. ACTING CONTEMPORARILY ON THE TEETH OF TWO RESPECTIVE INTERMEDIATE GEARS.
This invention relates -a gear mechanical transmission device, suitable to realize a pcrfecl distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears.
A problem to transmit the power torque from one driver shaft to a driven shaft by contemporari ly action on two teeth of an intermediate gear transmission, is well known.
This problem is particularly important in biscrew extruders where great torque transm ission al low running is required, notwithstanding a very reduced interaxis existing between the respective screw-extruding device.
Every system used ti ll today, from the employment of several electrical motors (altcrnalc current or direct current), to the most sophisticated mechan ical organs, i s not able to guarantee permanently and in any conditions the power transmission on two teeth of the same gearing intermediate transmission. If the electrical systems gave quite good results at a loss of very high costs and with many circuital complications, the mechanical systems, however perfect, were not able to distribute fairly the power on two teeth of the same wheel because of all the imperfections and mechanical tolerance that unfortunately exist also in the most sophisticated constructions.
This invention as claimed has the object of arriving to the perfect equilibrium of the transmitted power on two teeth using only usual mechanical organs and a simple and economical construction.
It solves the problem by a gear mechanical transmission device, particularly suitable for biscrcw extruders, to realize a perfect distribution of the power from one motor driver shaft/gear to a driven gear-shaft, acting contemporarily on the teeth of two respective intermediate gears, characterized in that: - said driver shaft/gear and said driven shaft/gear are geared with two couples of intermediate side apart gears, said two couples of intermediate side apart gears being mounted in an free oscillating inlermcdiate frame; - said driver shaft/gear and said driven shaft/gear are supported in a relative rigid case/frame compared to said free oscillating intermediate frame.
With this solution the problem of distribution of the torque both on two different teeth arc surely and efficiently solved.
One way of carrying out the invention is described in detail below with reference to drawings which illustrate only one specific embodiment, in which:
Figure 1 is e schematic front view of the device in accordance with the invention. Figure 2 is an axial semiscction of the device of Figure 1.
In the figures are shown two couples of "free rotatable" end oscillating in an independent supporting frame, set of couple of gears (2) (3) and (4) (5 ) as regards to the motor gear ( 1) (vinculated to a driver - shaft 1 ') and driven gear (6) geared to rotate the respective driven shaft (8). Be noted that this transmission is conceived for biscrew extruder, permit to containing the reactions on the shaft supports (1 ) and (8) promoting the problem sol ution of the wheelbases among the screws that in the biscrew extrudes ai cylindrical screws is quite critical . The power is transmitted from the motor (m) to the gear ( 1) connected to the driving shaft (1 '), that transmits by two teeth the power to the gears (2) and (3), that in their turn retransmit it to the gears (4) and (5) thai in their turn retransmit it to the gear (6) by two respective teeth. If the system should be rigid, it should not be innovating at all because, owing to the mechanical imperfections, the two engaged gear teeth (6) should be never in perfect contact and so the power should be really transmitted only on a tooth. Considering that the gears ( 1 ) and (6) are rigidly assembled by their supports, in the box of the reduction-unit (9) and so they do not put in crisis neither the driving shaft (1 ) nor the resistant shaft (6), the two couple of gears (2) (3) (4) (5) with the supports rigidly assembled in the freely oscillating cage/frame (7) are free of taking the best position as regards of the gears (6) and (1) in order to guarantee a perfect mesh cither with the two teeth of the gear (] ) or with the 2 tcclh of the gear (6). In any case the cage or intermediate frame (7) is free of oscillating in order to find the exact gearing position eliminating automatically every working mechanical imperfection without the intermediate of any on l ine compensator.electrical, elastic or mechanical organ.

Claims

1. Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor driver shaft/gear (1 -1 ') to a driven gear-shaft (6), acting contemporarily on the teeth of two respective intermediate gears, characterized in that: - said driver shaft/gear (1 -1 ') and said driven shaft/gear (6) are geared with two couples of intermediate side apart gears (2-4; 3-5), said two couples of intermediate side apart gears being mounted in an free oscillating intermediate frame (7); - said driver shaft/gear ( l - l ' ) and said driven shaft/gear (6) are supported in a relat ive rigid case/frame (9) compared to said free oscillating intermediate frame (7).
2. Biscrew extruder comprising a gear mechanical transmission device as claimed in claim 1.
PCT/IT1989/000005 1988-02-10 1989-02-03 Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears WO1989007722A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83312A/88 1988-02-10
IT8883312A IT1234876B (en) 1988-02-10 1988-02-10 MECHANICAL GEAR TRANSMISSION SUITABLE TO CREATE A PERFECT DISTRIBUTION OF TRANSMITTED POWER, PROVIDED BY A SINGLE MOTOR, ON 2 TEETH OF A GEAR MOUNTED ON THE RESISTANT OUTPUT SHAFT.

Publications (1)

Publication Number Publication Date
WO1989007722A1 true WO1989007722A1 (en) 1989-08-24

Family

ID=11319950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1989/000005 WO1989007722A1 (en) 1988-02-10 1989-02-03 Gear mechanical transmission device, suitable to realize a perfect distribution of the power from one motor shaft to a driven shaft, acting contemporarily on the teeth of two respective intermediate gears

Country Status (2)

Country Link
IT (1) IT1234876B (en)
WO (1) WO1989007722A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122939A (en) * 1964-03-03 Durand
FR1522323A (en) * 1967-02-28 1968-04-26 Mirrlees Nat Ltd Improvements in gear transmission devices
US3381509A (en) * 1965-04-27 1968-05-07 Loire Atel Forges Devices for transmitting a rotary motion to a gear
US4212543A (en) * 1977-08-05 1980-07-15 Terenzio Bersano Twin-screw, two-stage and multi-stage extruder having a double feed
DE3018610C2 (en) * 1980-05-13 1982-08-19 Mannesmann AG, 4000 Düsseldorf Multi-way gearboxes with load balancing, especially for ships

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122939A (en) * 1964-03-03 Durand
US3381509A (en) * 1965-04-27 1968-05-07 Loire Atel Forges Devices for transmitting a rotary motion to a gear
FR1522323A (en) * 1967-02-28 1968-04-26 Mirrlees Nat Ltd Improvements in gear transmission devices
US4212543A (en) * 1977-08-05 1980-07-15 Terenzio Bersano Twin-screw, two-stage and multi-stage extruder having a double feed
DE3018610C2 (en) * 1980-05-13 1982-08-19 Mannesmann AG, 4000 Düsseldorf Multi-way gearboxes with load balancing, especially for ships

Also Published As

Publication number Publication date
IT1234876B (en) 1992-06-02
IT8883312A0 (en) 1988-02-10

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