CA1159446A - Rotary mixer with reversible drive means - Google Patents
Rotary mixer with reversible drive meansInfo
- Publication number
- CA1159446A CA1159446A CA000361051A CA361051A CA1159446A CA 1159446 A CA1159446 A CA 1159446A CA 000361051 A CA000361051 A CA 000361051A CA 361051 A CA361051 A CA 361051A CA 1159446 A CA1159446 A CA 1159446A
- Authority
- CA
- Canada
- Prior art keywords
- drum
- cradle
- rotation
- gear wheels
- prime
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Landscapes
- Soil Working Implements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improved rotary drum mixing machine having a drive to the drum including driven means secured to the drum and operatively connected.
to driving means on a prime-mover driven shaft is provided herein. The machine includes: drive transmission means which permit reversal of the direction of rotation of the drum without having to reverse the prime-mover, the drive transmission means being interposed between the driving means and the prime-mover driven shaft and comprising: two gear wheels, the gear wheels being mounted for continuous meshing engagement with one another on parallel shafts, one of the shafts being operatively connected to the prime-mover driven shaft for continuous rotation of the gear wheels in opposite directions about the shaft axes; and a cradle, both of the shafts being rotatably mounted in the cradle, the cradle being pivotable about an axis parallel with the axes of rotation of the gear wheels; the cradle being adapted selectively to move each gear wheel into and out of a position in which its rotation is transmitted through the driving means and the driven means to rotate the drum in one or the other direction. By this invention, then reversal of the direction of rotation of the drum can be effected without reversing the prime-mover.
An improved rotary drum mixing machine having a drive to the drum including driven means secured to the drum and operatively connected.
to driving means on a prime-mover driven shaft is provided herein. The machine includes: drive transmission means which permit reversal of the direction of rotation of the drum without having to reverse the prime-mover, the drive transmission means being interposed between the driving means and the prime-mover driven shaft and comprising: two gear wheels, the gear wheels being mounted for continuous meshing engagement with one another on parallel shafts, one of the shafts being operatively connected to the prime-mover driven shaft for continuous rotation of the gear wheels in opposite directions about the shaft axes; and a cradle, both of the shafts being rotatably mounted in the cradle, the cradle being pivotable about an axis parallel with the axes of rotation of the gear wheels; the cradle being adapted selectively to move each gear wheel into and out of a position in which its rotation is transmitted through the driving means and the driven means to rotate the drum in one or the other direction. By this invention, then reversal of the direction of rotation of the drum can be effected without reversing the prime-mover.
Description
~ ~ ~5 4 ~T ~
This invention reJates to rotary drum mixing machines for con-crete and a variety of other materials inc]uding seed dressings and fertili7ers. This invention is concerned with a machine of the kind in which the rotary druTn contains a dev;ce, e.g., a helix, which is operable, on rotation of the druTIl in one direction to effect mixing and on rotation of the drum in the opposil:l' clirection, to eject the contents of the drum through its open end.
The drive to the drum usually includes driven means in the form of a gear wheel, sprocket or pulley secured to the drum and operatively connected to corresponding driving means on a prime-mover driven shaft.
An object of a principal aspect of the present invention, then, is to provide simple and efficient drive transmission means which permits ready reversal of the direction of rotation of the drum without having to reverse the prime-mover.
According to a principal aspect of this invention a rotary drum mixing machine is provided having a drive to the drum including driven means secured to the drum and operatively connected to driving means on a prime-mover driven shaft, the machine including: drive transmission means whch permit reversal of the direction of rotation of the drum without having to reverse the prime-mover, the drive transmission means being inter-posed between the driving means and the prime-mover driven shaft and com-prising: two gear wheels, the gear wheels being mounted for continuous meshing engagement with one another on parallel shafts, one of the shafts being operatively connected to the prime-mover driven shaft for continuous rotation of the gear wheels in opposite directions about the shaft axes;
and a cradle, both of the shafts being rotatably mounted in the cradle, -1- ~.
~5~4:~
che cradle being pivo~able about an axis parallel with the axes of rotation of the gear wheels; the cradle being adapted selectively to move each gear whee] inco and out of a position in which its rotation is transmitted thro~lgh the driving means and the driven means to rotate the drum in one or the other direction.
By one variant thereof~ the para]lel shafts pass through sleeves secured to and seated in the cradle.
By another variant, the driven means preferably consists of a toothed wheel secured to the drum and adapted to be directly engaged by driving means in the form of one or more pinions.
In this case by another variant, the driving means comprises two pinions, one such pinion being secured to, and rotatable with, one of the two gear wheels and the other such pinion being similarly secured to the other of the gear wheels, the pinions being adapted, in response to pivotal movement of the cradle in opposite directions, to move into or out of meshing engagement with the toothed wheel on the drum.
Alternatively, by a further variant, the driving means comprises a single pinion in continuous meshing engagement with the toothed wheel on the drum; a third gear wheel; the pinion being secured to, and rotatable with, the third gear wheel, the third gear wheel being in a position to be operatively engaged alternately by the first-mentioned gear wheels when the cradle is rocked in opposite directions about its pivotal axis.
By another variant, each such pinion comprises a disc and a plurality of hardened pins projecting axially from each disc, each pin carrying a roller rotatable thereon about the axis thereof.
By another variant, the pinions are secured to their respective
This invention reJates to rotary drum mixing machines for con-crete and a variety of other materials inc]uding seed dressings and fertili7ers. This invention is concerned with a machine of the kind in which the rotary druTn contains a dev;ce, e.g., a helix, which is operable, on rotation of the druTIl in one direction to effect mixing and on rotation of the drum in the opposil:l' clirection, to eject the contents of the drum through its open end.
The drive to the drum usually includes driven means in the form of a gear wheel, sprocket or pulley secured to the drum and operatively connected to corresponding driving means on a prime-mover driven shaft.
An object of a principal aspect of the present invention, then, is to provide simple and efficient drive transmission means which permits ready reversal of the direction of rotation of the drum without having to reverse the prime-mover.
According to a principal aspect of this invention a rotary drum mixing machine is provided having a drive to the drum including driven means secured to the drum and operatively connected to driving means on a prime-mover driven shaft, the machine including: drive transmission means whch permit reversal of the direction of rotation of the drum without having to reverse the prime-mover, the drive transmission means being inter-posed between the driving means and the prime-mover driven shaft and com-prising: two gear wheels, the gear wheels being mounted for continuous meshing engagement with one another on parallel shafts, one of the shafts being operatively connected to the prime-mover driven shaft for continuous rotation of the gear wheels in opposite directions about the shaft axes;
and a cradle, both of the shafts being rotatably mounted in the cradle, -1- ~.
~5~4:~
che cradle being pivo~able about an axis parallel with the axes of rotation of the gear wheels; the cradle being adapted selectively to move each gear whee] inco and out of a position in which its rotation is transmitted thro~lgh the driving means and the driven means to rotate the drum in one or the other direction.
By one variant thereof~ the para]lel shafts pass through sleeves secured to and seated in the cradle.
By another variant, the driven means preferably consists of a toothed wheel secured to the drum and adapted to be directly engaged by driving means in the form of one or more pinions.
In this case by another variant, the driving means comprises two pinions, one such pinion being secured to, and rotatable with, one of the two gear wheels and the other such pinion being similarly secured to the other of the gear wheels, the pinions being adapted, in response to pivotal movement of the cradle in opposite directions, to move into or out of meshing engagement with the toothed wheel on the drum.
Alternatively, by a further variant, the driving means comprises a single pinion in continuous meshing engagement with the toothed wheel on the drum; a third gear wheel; the pinion being secured to, and rotatable with, the third gear wheel, the third gear wheel being in a position to be operatively engaged alternately by the first-mentioned gear wheels when the cradle is rocked in opposite directions about its pivotal axis.
By another variant, each such pinion comprises a disc and a plurality of hardened pins projecting axially from each disc, each pin carrying a roller rotatable thereon about the axis thereof.
By another variant, the pinions are secured to their respective
- 2 ~
~ ~55~ 6 shaft:s for rotation therewith.
By yet another variant, the single pinion and the third gear wheel are mounted on a separate shaft ext-ending parallel with the first-mentioned shafts.
By a sti]l further variant, the cradle is biased in one direction about is pivot by a spring, and the cradle is rocked in the opposite direction through the medium of a manually actuated cord.
In the accompanying drawings, Figure 1 is an exploded perspective view of part of a tractor-mounted mixing machinè incorporating one aspect of this invention; and Figure 2 is a fragmentary view showing an alternative form of drive for the drum.
Referring first to Figure 1, a mixing drum 1 is rotatably mounted - 2a -4 ~
on a pin 2 extending through ti~e closed end 3 of the drum from the cross-piece 4 of an A-frame 5 which is adapted to be secured to the three-point linkage of an agricultural tractor (not shown) through the medium of arms 6 and an upright member 7 attached to ehe front of the frame 5.
The drum 1 is provided with an internal helical member 8 which is operable, on rotation of the drum about its axis in one direction, to effect mixing of its contents and, on rotation of thè drum in the opposite direction, t~ eject the contents of the drum through its open end 9.
~ le closed end 3 of the drum 1 carries a gear wheel 10 enclosed over most of its periphery by a guard 11 secured to the frame 5 by pins 12 passing through apertures in the frame and threaded at their ends to receive nuts 13.
The unguarded lower portion of the gear wheel 10 is engaged by one or other of two pinions 14 and 15 which are fixed to shafts 16 and 17 respectively. Each of these pinions 14 and 15 comprises a disc 18 from which project a plurality of hardened pins 19 carrying hardened rollers 20 which rotate on the pins 19 and which are individually lubricated. The pins 19 connect the discs 18 of the pinions 14 and 15 to gear wheels 21 and 22, respectively, which are also fixed to the shafts 16 and 17, respec-tively, and are in continuous meshing engagement with one another. Onopposite sides of the pinions 14, 15 and gear wheels 21, 22 the shafts 16, 17 are rotatably mounted in sleeves 23 having flanges 24 which are secured by bolts 25 and nuts 26 to plates 27 which are recessed at 28 to receive the sleeves 23, and which are pivotally mounted on pins 29 projecting from brackets 30 on cross-members 31 bolted at 32 to longitudinal frame members 33. The plates 27 thus form the ends of a cradle which can be rocked about the axis of the pins 29 by manipulation of a cord 34 anchored at 35 to an extension 36 on one side of one of the plates 27 and extending over a pulley 37 to a point within each of the tractor deriver. The other side ~594 ~
of the plate 27 havIng the ext~nsi.on 36 i5 anchored at 38 to one end of a tension spring 39, the other end of which is anchored to & longitudinal frame member 40.
The shaft 16 extends right through the forward one of the asso-ciated sleeves 23 and is threaded at 41 for attachment to a coupling 42 for the power take-off shaft (not shown~ of the tractor.
In operation, the tractor power take-off shaft drives the shaft 16 to rotate the pinion 14 and the gear wheel 21, which latter rotates the gear wheel 22 and with it the pinion 15 and shaft 17 in the opposite direc-tion to the shaft 16. The spring 39 biases the cradle in an anti-clockwise direction, as viewed from the left in Figure 1, to bring the pinion into meshing engagement with the gear wheel 10 on the drum to drive the latter in a direction to effect mixing of its contents. I~hen mixing is completed the tractor driver pulls the cord 34 to rock the cradle against the action of spring 39 in a clockwise direction about the pivot pins 29 to disengage the pinion 14 from and engage the pinion 15 with the gear wheel 10 to rotate the drum in the opposite direction to discharge lts contents from the open end thereof. Upon release of the cord 34 the spring 39 returns the cradle to its original position in which the pinion 14 is once again in engagement with the gear wheel 10.
In the modification illustrated in Figure 2, the pinions 14 and 15 are replaced by a single pinion 43 in continuous meshing engagement with the gear wheel 10 on the drum and mounted on a separate shaft 44 carrying an additional gear wheel 45 fixed to the pinion 43 and adapted alternately to be engaged by the gear wheels 21 and 22 on the shafts 16 and 17 when the cradle is biased by the spring 39 and rocked by the cord 34, respectively.
The single pinion 43 may be replaced by a sprocket or pulley (not shown) which is mounted on the shaft 44 with the gear wheel 45 and is 59~6 operatively connected by a chain or belt to a sprocket or pulley (not shown) secured to the drum 1 in place of the gear wheel 10.
The machine described is mainly intended for use by farmers since it can be fitted to the three-point llnkage of an agricultural tractor and driven from the tractor power take-off. It can also, however, be mounted on a free-standing frame and driven by any other primse-mover.
~ ~55~ 6 shaft:s for rotation therewith.
By yet another variant, the single pinion and the third gear wheel are mounted on a separate shaft ext-ending parallel with the first-mentioned shafts.
By a sti]l further variant, the cradle is biased in one direction about is pivot by a spring, and the cradle is rocked in the opposite direction through the medium of a manually actuated cord.
In the accompanying drawings, Figure 1 is an exploded perspective view of part of a tractor-mounted mixing machinè incorporating one aspect of this invention; and Figure 2 is a fragmentary view showing an alternative form of drive for the drum.
Referring first to Figure 1, a mixing drum 1 is rotatably mounted - 2a -4 ~
on a pin 2 extending through ti~e closed end 3 of the drum from the cross-piece 4 of an A-frame 5 which is adapted to be secured to the three-point linkage of an agricultural tractor (not shown) through the medium of arms 6 and an upright member 7 attached to ehe front of the frame 5.
The drum 1 is provided with an internal helical member 8 which is operable, on rotation of the drum about its axis in one direction, to effect mixing of its contents and, on rotation of thè drum in the opposite direction, t~ eject the contents of the drum through its open end 9.
~ le closed end 3 of the drum 1 carries a gear wheel 10 enclosed over most of its periphery by a guard 11 secured to the frame 5 by pins 12 passing through apertures in the frame and threaded at their ends to receive nuts 13.
The unguarded lower portion of the gear wheel 10 is engaged by one or other of two pinions 14 and 15 which are fixed to shafts 16 and 17 respectively. Each of these pinions 14 and 15 comprises a disc 18 from which project a plurality of hardened pins 19 carrying hardened rollers 20 which rotate on the pins 19 and which are individually lubricated. The pins 19 connect the discs 18 of the pinions 14 and 15 to gear wheels 21 and 22, respectively, which are also fixed to the shafts 16 and 17, respec-tively, and are in continuous meshing engagement with one another. Onopposite sides of the pinions 14, 15 and gear wheels 21, 22 the shafts 16, 17 are rotatably mounted in sleeves 23 having flanges 24 which are secured by bolts 25 and nuts 26 to plates 27 which are recessed at 28 to receive the sleeves 23, and which are pivotally mounted on pins 29 projecting from brackets 30 on cross-members 31 bolted at 32 to longitudinal frame members 33. The plates 27 thus form the ends of a cradle which can be rocked about the axis of the pins 29 by manipulation of a cord 34 anchored at 35 to an extension 36 on one side of one of the plates 27 and extending over a pulley 37 to a point within each of the tractor deriver. The other side ~594 ~
of the plate 27 havIng the ext~nsi.on 36 i5 anchored at 38 to one end of a tension spring 39, the other end of which is anchored to & longitudinal frame member 40.
The shaft 16 extends right through the forward one of the asso-ciated sleeves 23 and is threaded at 41 for attachment to a coupling 42 for the power take-off shaft (not shown~ of the tractor.
In operation, the tractor power take-off shaft drives the shaft 16 to rotate the pinion 14 and the gear wheel 21, which latter rotates the gear wheel 22 and with it the pinion 15 and shaft 17 in the opposite direc-tion to the shaft 16. The spring 39 biases the cradle in an anti-clockwise direction, as viewed from the left in Figure 1, to bring the pinion into meshing engagement with the gear wheel 10 on the drum to drive the latter in a direction to effect mixing of its contents. I~hen mixing is completed the tractor driver pulls the cord 34 to rock the cradle against the action of spring 39 in a clockwise direction about the pivot pins 29 to disengage the pinion 14 from and engage the pinion 15 with the gear wheel 10 to rotate the drum in the opposite direction to discharge lts contents from the open end thereof. Upon release of the cord 34 the spring 39 returns the cradle to its original position in which the pinion 14 is once again in engagement with the gear wheel 10.
In the modification illustrated in Figure 2, the pinions 14 and 15 are replaced by a single pinion 43 in continuous meshing engagement with the gear wheel 10 on the drum and mounted on a separate shaft 44 carrying an additional gear wheel 45 fixed to the pinion 43 and adapted alternately to be engaged by the gear wheels 21 and 22 on the shafts 16 and 17 when the cradle is biased by the spring 39 and rocked by the cord 34, respectively.
The single pinion 43 may be replaced by a sprocket or pulley (not shown) which is mounted on the shaft 44 with the gear wheel 45 and is 59~6 operatively connected by a chain or belt to a sprocket or pulley (not shown) secured to the drum 1 in place of the gear wheel 10.
The machine described is mainly intended for use by farmers since it can be fitted to the three-point llnkage of an agricultural tractor and driven from the tractor power take-off. It can also, however, be mounted on a free-standing frame and driven by any other primse-mover.
Claims (9)
1. A rotary drum mixing machine having a drive to the drum including driven means secured to said drum and operatively connected to driving means on a prime-mover driven shaft, said machine including: drive transmission means which permit reversal of the direction of rotation of the drum without having to reverse the prime-mover, said drive transmission means being inter-posed between said driving means and said prime-mover driven shaft and comprising:
two gear wheels, said gear wheels being mounted for continuous meshing engage-ment with one another on parallel shafts, one of said shafts being operatively connected to said prime-mover driven shaft for continuous rotation of said gear wheels in opposite directions about said shaft axes; and a cradle, both of said shafts being rotatably mounted in said cradle, said cradle being pivotable about an axis parallel with the axes of rotation of said gear wheels; said cradle being adapted selectively to move each gear wheel into and out of a position in which its rotation is transmitted through said driving means and said driven means to rotate said drum in one or the other direction.
two gear wheels, said gear wheels being mounted for continuous meshing engage-ment with one another on parallel shafts, one of said shafts being operatively connected to said prime-mover driven shaft for continuous rotation of said gear wheels in opposite directions about said shaft axes; and a cradle, both of said shafts being rotatably mounted in said cradle, said cradle being pivotable about an axis parallel with the axes of rotation of said gear wheels; said cradle being adapted selectively to move each gear wheel into and out of a position in which its rotation is transmitted through said driving means and said driven means to rotate said drum in one or the other direction.
2. A machine according to claim 1, wherein said parallel shafts pass through sleeves secured to and seated in said cradle.
3. A machine according to claim 1 wherein: said driven means comprises a toothed wheel secured to said drum; and wherein said driving means comprises at least one pinion for direct engagement with said toothed wheel.
4. A machine according to claim 3 wherein said driving means comprises:
two pinions, one said pinion being secured to, and rotatable with, one of said gear wheels, and the other said pinions being similarly secured to the other of said gear wheels; said pinions being alternately movable into meshing engage-ment with said toothed wheel on said drum in response to pivotal movement of said cradle in opposite directions.
two pinions, one said pinion being secured to, and rotatable with, one of said gear wheels, and the other said pinions being similarly secured to the other of said gear wheels; said pinions being alternately movable into meshing engage-ment with said toothed wheel on said drum in response to pivotal movement of said cradle in opposite directions.
5. A machine according lo claim 3 where-in said driving means comprises:
a single pinion in continuous meshing engagement with said toothed wheel on said drum; a third gear wheel; said pinion being secured to, and rotatable with, said third gear wheel, said third gear wheel being in a position to be operatively engaged alternately by said first-mentioned gear wheels when said cradle is rocked in opposite directions about its pivotal axis.
a single pinion in continuous meshing engagement with said toothed wheel on said drum; a third gear wheel; said pinion being secured to, and rotatable with, said third gear wheel, said third gear wheel being in a position to be operatively engaged alternately by said first-mentioned gear wheels when said cradle is rocked in opposite directions about its pivotal axis.
6. A machine according to claims 3, 4 or 5 wherein each said pinion comprises: a disc; and a plurality of hardened pins projecting axially from said disc; each pin carrying a roller rotatable thereon about the axis thereof.
7. A machine according to claim 4 wherein said pinions are secured to respective said shafts for rotation therewith.
8. A machine according to claim 5 wherein said single pinion and said third gear wheel are mounted on a separate shaft extending parallel with said first-mentioned shafts.
9. A machine according to claim 1 wherein: said cradle is biased in one direction about its pivot by a spring; and wherein said cradle is rocked in the opposite direction through the medium of a manually actuated cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000361051A CA1159446A (en) | 1980-09-25 | 1980-09-25 | Rotary mixer with reversible drive means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000361051A CA1159446A (en) | 1980-09-25 | 1980-09-25 | Rotary mixer with reversible drive means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1159446A true CA1159446A (en) | 1983-12-27 |
Family
ID=4117992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000361051A Expired CA1159446A (en) | 1980-09-25 | 1980-09-25 | Rotary mixer with reversible drive means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1159446A (en) |
-
1980
- 1980-09-25 CA CA000361051A patent/CA1159446A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |