CA1142012A - Drive mechanism - Google Patents
Drive mechanismInfo
- Publication number
- CA1142012A CA1142012A CA000377111A CA377111A CA1142012A CA 1142012 A CA1142012 A CA 1142012A CA 000377111 A CA000377111 A CA 000377111A CA 377111 A CA377111 A CA 377111A CA 1142012 A CA1142012 A CA 1142012A
- Authority
- CA
- Canada
- Prior art keywords
- drum
- rotation
- engaging
- axis
- pinion gear
- 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
- Road Paving Machines (AREA)
Abstract
DRIVE MECHANISM
ABSTRACT
A drive mechanism has a frame, a drum and a first element rotatable relative to the frame. A
driving element is mounted on and rotatable with the first element. Apparatus, such as a hydraulic motor and pinion gear, engages and rotates the driving ele-ment. Apparatus, such as a brake and pinion gear engages and controllably blocks the driving element from rotation. Final drive apparatus transfers rota-tional motion from the first element to the drum, which can be, for example, the drum of a compactor inside of which the drive mechanism is located. The orientation of the elements of the drive mechanism reduces its width which frees more area inside the space limited drum and eliminates the need to mount components exteriorly to the drum where they can be damaged.
ABSTRACT
A drive mechanism has a frame, a drum and a first element rotatable relative to the frame. A
driving element is mounted on and rotatable with the first element. Apparatus, such as a hydraulic motor and pinion gear, engages and rotates the driving ele-ment. Apparatus, such as a brake and pinion gear engages and controllably blocks the driving element from rotation. Final drive apparatus transfers rota-tional motion from the first element to the drum, which can be, for example, the drum of a compactor inside of which the drive mechanism is located. The orientation of the elements of the drive mechanism reduces its width which frees more area inside the space limited drum and eliminates the need to mount components exteriorly to the drum where they can be damaged.
Description
2~
Description Drive Mechanism Technical Field The invention relates to a drive mechanism and, more particularly, to a drive mechanism in whieh the means for driving and means for blocking rotation of the mechanism are oriented perpendicular to the element upon which they act.
Background Art In drive mechanisms it is of-ten desirable to minimize dimensions of the meehanlsms in order to make maximum use of spaee limited mounting locations. For example, a drive mechanism is commonly mounted within a drum or roller of a compactor to rotate -the drum. In a vibratory compactor, a vibrating mechanism is also positioned within the drum to impart vibratory forces to the drum. Such a vibratory compactor is illustrated in U.S. Patent 4,108,009 which issued to Fuchigami on August 22, 1978. If both the drive and vibrating mechanisms are utili~ed, the amount of space within the drum can become very limited. I-t is not uncommon, therefore, to mount a hydraulic motor, which provides the rotational input to the drive mechanism, outside of the drum. Sueh a mounting arrangemen-t is shown in U.S.
Patent 3,741,669 which issued on June 26, 1973 to ~larris.
In eertain work environments, sueh a mounting arrange-ment can subject the exteriorly mounted components to damage from, for example, contacting obstructions in turning the associated vehicle.
Also contributing to the space limitations inside a drum is the problem of obtaining the most desirable final rotational speed of the drum relative to the input of the motor. This sometimes can require numerous sets o~ gears in the drive mechanism to change the speed of the rotation-al input. Use of a plurality of year sets to change speeds par-ticularly affects the width of a drive mechanism which can further limit the space available inside the drum for mounting the vibra-tory drive mechanism.
The present invention is directedto overcoming one or more of the problems as set forth above.
Summary of the Invention In one aspect of the present invention there is provided apparatus, comprising: a frame including a yoke; a drum having an axis of rotation and being rotatably mounted on said yoke; a first element having an axis of rotation and being associated with and rotatable relative to said frame within said drum, said axis of rotation of said first element being substantially the same as said axis of rotation of said drum; a driving element mounted on and rotatable with said first element about said axis of rotation of said first element within said drum; means for engaging and rotating said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; means for engaging and controllably blocking from rotation said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; and final drive means for receiving rotational motion from said first element and rotatably driving said drum in response to said rotational motion, said final drive means having a preselected drive ratio and being positioned within said drum.
The apparatus is used, for example, within a compacting drum of a vibratory compactor for rotating the drum. The orien-tation of the engaging and rotating means and the engaging and blocking means reduces the width of the apparatus to provide more space within the drum for other components and to elimina~e the necessity of mounting elements outside the drum where they could be damaged.
Brie~ Des:c:ription of the Drawings . . _ . .
Figure 1 is a diagrammatic view in elevation showing a vibratory compactor, such as is pulled by a - 2a -
Description Drive Mechanism Technical Field The invention relates to a drive mechanism and, more particularly, to a drive mechanism in whieh the means for driving and means for blocking rotation of the mechanism are oriented perpendicular to the element upon which they act.
Background Art In drive mechanisms it is of-ten desirable to minimize dimensions of the meehanlsms in order to make maximum use of spaee limited mounting locations. For example, a drive mechanism is commonly mounted within a drum or roller of a compactor to rotate -the drum. In a vibratory compactor, a vibrating mechanism is also positioned within the drum to impart vibratory forces to the drum. Such a vibratory compactor is illustrated in U.S. Patent 4,108,009 which issued to Fuchigami on August 22, 1978. If both the drive and vibrating mechanisms are utili~ed, the amount of space within the drum can become very limited. I-t is not uncommon, therefore, to mount a hydraulic motor, which provides the rotational input to the drive mechanism, outside of the drum. Sueh a mounting arrangemen-t is shown in U.S.
Patent 3,741,669 which issued on June 26, 1973 to ~larris.
In eertain work environments, sueh a mounting arrange-ment can subject the exteriorly mounted components to damage from, for example, contacting obstructions in turning the associated vehicle.
Also contributing to the space limitations inside a drum is the problem of obtaining the most desirable final rotational speed of the drum relative to the input of the motor. This sometimes can require numerous sets o~ gears in the drive mechanism to change the speed of the rotation-al input. Use of a plurality of year sets to change speeds par-ticularly affects the width of a drive mechanism which can further limit the space available inside the drum for mounting the vibra-tory drive mechanism.
The present invention is directedto overcoming one or more of the problems as set forth above.
Summary of the Invention In one aspect of the present invention there is provided apparatus, comprising: a frame including a yoke; a drum having an axis of rotation and being rotatably mounted on said yoke; a first element having an axis of rotation and being associated with and rotatable relative to said frame within said drum, said axis of rotation of said first element being substantially the same as said axis of rotation of said drum; a driving element mounted on and rotatable with said first element about said axis of rotation of said first element within said drum; means for engaging and rotating said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; means for engaging and controllably blocking from rotation said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; and final drive means for receiving rotational motion from said first element and rotatably driving said drum in response to said rotational motion, said final drive means having a preselected drive ratio and being positioned within said drum.
The apparatus is used, for example, within a compacting drum of a vibratory compactor for rotating the drum. The orien-tation of the engaging and rotating means and the engaging and blocking means reduces the width of the apparatus to provide more space within the drum for other components and to elimina~e the necessity of mounting elements outside the drum where they could be damaged.
Brie~ Des:c:ription of the Drawings . . _ . .
Figure 1 is a diagrammatic view in elevation showing a vibratory compactor, such as is pulled by a - 2a -
3~
vehicle, incorporating the present invention; and Fi~. 2 is a diagranu~atic, cross-sectional view in partial elevation of a portion of the compactor of Fig. 2 and showing in detail one embodiment of the present invention.
est Mode ~or Carrying Qut the Invention Referring to the drawing, apparatus 10 is shown, for example, associated with a vibratory com-pactor 12 which includes a driven member or drum 14 and a yoke 16 which is a portion of a frame 18. The appa-ratus is a right angle drive mechanism which receives a power input from an associated vehicle (not shown) and subsequently drives the drum at a desired rotational speed. The compactor is connected to the vehicle by the frame at a pivot point 19. Also positioned in the drum adjacent the drive mechanism is a vibratory mechanism (not shown) which receives a power input from the vehicle and typically creates an unbalanced rotational output for establishing vibratory forces on the drum.
Vibratory compactors are wel-l known in the compacting art and are commonly used in land fill or construction operations which require compacting the earth, fill material or road surfacing material to specific densities.
The drive mechanism 10 has a first element or shaft 20 rotatable relative to the yoke 16 on bearings 24 and accessible through removal of a plate 25. The shaft is rotatable about its axis of rotation 26 which is substantially the same as the centerline or axis of rotation 28 of the drum about which the frame 18 con-nects to said drum. Mounted on the shaft throughsplines is a driving element 30 directly supported by the bearings 24 and shown including a bevel gear 32, which is rotatable with the shaft about its axis of rotation . First means 34 is provided for engaging and ~ ~2~
rotating ~he driving element and second means 36 is provided for engaging and controllably blocking from rotation, or braking the rotation of, the driving ele-ment. The first means includes a first pinion gear 38 ~ositioned in engagement with the bevel gear power means 40, such as a hydraulic motor. The second means includes a brake 42 and a second pinion gear 44 rota-tionally associated with the brake and positioned in engagement with the bevel gear. Each of said means defines an axis of rotation 46,48 oriented perpendicu-lar to the axis of rotation 26 of the shaft. Prefer-ably, and as is shown, said axes are substantially the same such that the pinion gears drive the shaft on opposite sides of the shaft.
Referring specifically to the configuration o the pinion gears 38,44 and their associated elements, each of the pinion gears includes a shaft portion 50',50" having the related axis of rotation 46,48 and being rotatably supported on the yoke 16 by bearings 52',52". The shaft portion 50' of the first pinion gear 38 extends toward and is rotatably connected to the hydraulic motor 40 by a coupling. The shaft por-tion 50" of the second pinion gear 44 extends to the brake 42 which has a friction 54 and a reaction 56 disc (shown as a plurality). One set of said discs, shown as the reaction discs, is fixed from rotation relative to the frame through a splined connection 58 with the frame. The other set of said discs, shown as the fric-tion discs, is rotatable with the second pinion gear also through a splined connection 60. The discs are normally frictionally engaged one with the other owing to the biasing force of frusto-conical washers 62. A
piston assembly 64 is hydraulically actuatable to con-trollably release the brake by overcoming the force of the washers. Such brake operation is well known, particularly in the work vehicle art.
' ' ' ' ' ' ~^ ~
Acting at the opposite end of the shaf-t 20, final drive means 66 -transfers rotational motion from the shaft to the drum 14 in order to drive the drum.
The final drive means r shown as a planetary gear assem-bly 68, includes first and second motion transferelements 70,72 having a preselected drive ratio rela-tionship one relative to the other. The first transfer element, a sun element 74 of the planetary gear assembly shown carried on the shaft, is rotatable with said shaft. The second transfer element, shown as a carrier element 76 of the planetary gear assembly, is rotatable with the drum owing to its connection with said drum~
The planetary gear assembly also includes a planet element 78 and a ring element 80 which is fixed from rotation relative to the yoke 16 through a splined connection 82. It should be understood that the ring element can also be connected to the drum with the carrier elemen-t fixed relative to the frame. Such planetary gear assemblies are well known in the art and are commonly used for providing a speed reducing or in-creasi~g function on a drive mechanism through the drive ratio established by the relationship of the teeth on the sun, planet and ring elements.
Industrial Applicability In the use oE the drive mechanism lO, -the brake discs 54f56 are released from frictional engage-ment by actuating the piston assembly 64 and the hy-draulic motor 40 is actuated to rotate the first pinion gear 38 and drive the shaft 20 through the bevel gear 32. The rotating shaft causes the sun element 74 to rotate which results in driving the drum 14 with the rotating carrier element 76. The ratio of the bevel 32 and pinion 38,44 gears and the elemen-ts 74,78,80 of the planetary gear assembly 68 establish the rotational output speed of the carrier, and thus the rotational speed of the drum, relative -to the rotational speed of the hydraulic motor.
Where desired, the drum 14 can be slowed or entirely braked by frictionally engaging the friction and reaction discs 54,56 of the bra]ce 42. This is accomplished by decreasing or eliminating the fluid pressure in the pis-ton assembly 64 acting to overcome the biasing force of the frusto-conical washers 62 which, during operation, is usually maintained at sufficient magnitude to overcome the biasing force of the washers that otherwise acts to move the discs into frictional engagement.
As will be seen from the drawing, the drive mechanism 10 presents a compact and space efficient apparatus owing to its "right angle" drive arrangement derived from the relationship of the bevel 32 and pinion 38,44 gears. The shaft 20, bevel gear, pinion gears, hydraulic motor 40, brake 42 and planetary gear assembly 68 are all located within the drum 14. This eliminates the need to position elements externally of the drum, such as on -the frame 18, where they might be damaged in the work environment. The width of the drive mechanism is reduced owing to the "right angle" arrangement of the motor 40 and brake 42 and the use of the single plane-tary gear assembly 68 for -the final drive. This results in additional space within the drum for mounting the vibration mechanism which imparts the vibratory forces to the drum. Further, removal of the plate 25, allows removal of the shaft 20 from its splined connections to permit towing of the compactor 12 without damage to the motors therein if a breakdown does occur.
Other aspects, objects and advantayes will become apparent from a study of the specification, drawings and appended claims.
vehicle, incorporating the present invention; and Fi~. 2 is a diagranu~atic, cross-sectional view in partial elevation of a portion of the compactor of Fig. 2 and showing in detail one embodiment of the present invention.
est Mode ~or Carrying Qut the Invention Referring to the drawing, apparatus 10 is shown, for example, associated with a vibratory com-pactor 12 which includes a driven member or drum 14 and a yoke 16 which is a portion of a frame 18. The appa-ratus is a right angle drive mechanism which receives a power input from an associated vehicle (not shown) and subsequently drives the drum at a desired rotational speed. The compactor is connected to the vehicle by the frame at a pivot point 19. Also positioned in the drum adjacent the drive mechanism is a vibratory mechanism (not shown) which receives a power input from the vehicle and typically creates an unbalanced rotational output for establishing vibratory forces on the drum.
Vibratory compactors are wel-l known in the compacting art and are commonly used in land fill or construction operations which require compacting the earth, fill material or road surfacing material to specific densities.
The drive mechanism 10 has a first element or shaft 20 rotatable relative to the yoke 16 on bearings 24 and accessible through removal of a plate 25. The shaft is rotatable about its axis of rotation 26 which is substantially the same as the centerline or axis of rotation 28 of the drum about which the frame 18 con-nects to said drum. Mounted on the shaft throughsplines is a driving element 30 directly supported by the bearings 24 and shown including a bevel gear 32, which is rotatable with the shaft about its axis of rotation . First means 34 is provided for engaging and ~ ~2~
rotating ~he driving element and second means 36 is provided for engaging and controllably blocking from rotation, or braking the rotation of, the driving ele-ment. The first means includes a first pinion gear 38 ~ositioned in engagement with the bevel gear power means 40, such as a hydraulic motor. The second means includes a brake 42 and a second pinion gear 44 rota-tionally associated with the brake and positioned in engagement with the bevel gear. Each of said means defines an axis of rotation 46,48 oriented perpendicu-lar to the axis of rotation 26 of the shaft. Prefer-ably, and as is shown, said axes are substantially the same such that the pinion gears drive the shaft on opposite sides of the shaft.
Referring specifically to the configuration o the pinion gears 38,44 and their associated elements, each of the pinion gears includes a shaft portion 50',50" having the related axis of rotation 46,48 and being rotatably supported on the yoke 16 by bearings 52',52". The shaft portion 50' of the first pinion gear 38 extends toward and is rotatably connected to the hydraulic motor 40 by a coupling. The shaft por-tion 50" of the second pinion gear 44 extends to the brake 42 which has a friction 54 and a reaction 56 disc (shown as a plurality). One set of said discs, shown as the reaction discs, is fixed from rotation relative to the frame through a splined connection 58 with the frame. The other set of said discs, shown as the fric-tion discs, is rotatable with the second pinion gear also through a splined connection 60. The discs are normally frictionally engaged one with the other owing to the biasing force of frusto-conical washers 62. A
piston assembly 64 is hydraulically actuatable to con-trollably release the brake by overcoming the force of the washers. Such brake operation is well known, particularly in the work vehicle art.
' ' ' ' ' ' ~^ ~
Acting at the opposite end of the shaf-t 20, final drive means 66 -transfers rotational motion from the shaft to the drum 14 in order to drive the drum.
The final drive means r shown as a planetary gear assem-bly 68, includes first and second motion transferelements 70,72 having a preselected drive ratio rela-tionship one relative to the other. The first transfer element, a sun element 74 of the planetary gear assembly shown carried on the shaft, is rotatable with said shaft. The second transfer element, shown as a carrier element 76 of the planetary gear assembly, is rotatable with the drum owing to its connection with said drum~
The planetary gear assembly also includes a planet element 78 and a ring element 80 which is fixed from rotation relative to the yoke 16 through a splined connection 82. It should be understood that the ring element can also be connected to the drum with the carrier elemen-t fixed relative to the frame. Such planetary gear assemblies are well known in the art and are commonly used for providing a speed reducing or in-creasi~g function on a drive mechanism through the drive ratio established by the relationship of the teeth on the sun, planet and ring elements.
Industrial Applicability In the use oE the drive mechanism lO, -the brake discs 54f56 are released from frictional engage-ment by actuating the piston assembly 64 and the hy-draulic motor 40 is actuated to rotate the first pinion gear 38 and drive the shaft 20 through the bevel gear 32. The rotating shaft causes the sun element 74 to rotate which results in driving the drum 14 with the rotating carrier element 76. The ratio of the bevel 32 and pinion 38,44 gears and the elemen-ts 74,78,80 of the planetary gear assembly 68 establish the rotational output speed of the carrier, and thus the rotational speed of the drum, relative -to the rotational speed of the hydraulic motor.
Where desired, the drum 14 can be slowed or entirely braked by frictionally engaging the friction and reaction discs 54,56 of the bra]ce 42. This is accomplished by decreasing or eliminating the fluid pressure in the pis-ton assembly 64 acting to overcome the biasing force of the frusto-conical washers 62 which, during operation, is usually maintained at sufficient magnitude to overcome the biasing force of the washers that otherwise acts to move the discs into frictional engagement.
As will be seen from the drawing, the drive mechanism 10 presents a compact and space efficient apparatus owing to its "right angle" drive arrangement derived from the relationship of the bevel 32 and pinion 38,44 gears. The shaft 20, bevel gear, pinion gears, hydraulic motor 40, brake 42 and planetary gear assembly 68 are all located within the drum 14. This eliminates the need to position elements externally of the drum, such as on -the frame 18, where they might be damaged in the work environment. The width of the drive mechanism is reduced owing to the "right angle" arrangement of the motor 40 and brake 42 and the use of the single plane-tary gear assembly 68 for -the final drive. This results in additional space within the drum for mounting the vibration mechanism which imparts the vibratory forces to the drum. Further, removal of the plate 25, allows removal of the shaft 20 from its splined connections to permit towing of the compactor 12 without damage to the motors therein if a breakdown does occur.
Other aspects, objects and advantayes will become apparent from a study of the specification, drawings and appended claims.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus, comprising:
a frame including a yoke;
a drum having an axis of rotation and being rotatably mounted on said yoke;
a first element having an axis of rotation and being associated with and rotatable relative to said frame within said drum, said axis of rotation of said first element being substantially the same as said axis of rotation of said drum;
a driving element mounted on and rotatable with said first element about said axis of rotation of said first element within said drum;
means for engaging and rotating said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame;
means for engaging and controllably blocking from rotation said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; and final drive means for receiving rotational motion from said first element and rotatably driving said drum in response to said rotational motion, said final drive means having a preselected drive ratio and being positioned within said drum.
a frame including a yoke;
a drum having an axis of rotation and being rotatably mounted on said yoke;
a first element having an axis of rotation and being associated with and rotatable relative to said frame within said drum, said axis of rotation of said first element being substantially the same as said axis of rotation of said drum;
a driving element mounted on and rotatable with said first element about said axis of rotation of said first element within said drum;
means for engaging and rotating said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame;
means for engaging and controllably blocking from rotation said driving element, said means defining an axis of rotation oriented perpendicular to said axis of rotation of said first element and being positioned within said drum and carried by said frame; and final drive means for receiving rotational motion from said first element and rotatably driving said drum in response to said rotational motion, said final drive means having a preselected drive ratio and being positioned within said drum.
2. The apparatus, as set forth in claim 1, wherein said driving element includes a bevel gear and said engaging and rotating means includes a pinion gear having said axis of rotation of said engaging and rota-ting means and being positioned in engagement with said bevel gear.
3. The apparatus, as set forth in claim 1, wherein said driving element includes a bevel gear and said engaging and blocking means includes a brake and a pinion gear, said pinion gear having said axis of rota-tion of said engaging and blocking means and being rotatably associated with said brake and positioned in engagement with said bevel gear.
4. The apparatus, as set forth in claim 3, wherein said brake includes a friction and a reaction disc, one of said friction and reaction discs being fixed from rotation relative to said frame, the other of said friction and reaction discs being rotatable with said pinion gear.
5. The apparatus, as set forth in claim 1, wherein said final drive means is a planetary gear assembly having planet, ring, sun and carrier elements and said sun element is rotatably carried on said first element and one of said carrier and ring elements is rotatable with said drum.
6. The apparatus, as set forth in claim 1, wherein said driving element includes a bevel gear, said engaging and rotating means includes a pinion gear and power means for rotating said pinion gear and said engaging and blocking means includes a pinion gear and a brake, said pinion gear of said engaging and rotating means having said axis of rotation of said engaging and rotating means and being positioned in engagement with said bevel gear, said pinion gear of said engaging and blocking means having said axis of rotation of said engaging and blocking means and being positioned in engagement with said bevel gear and rotatably associ-ated with said brake, said axes of rotation of said engaging and rotating means and of said engaging and blocking means being substantially the same.
7. The apparatus, as set forth in claim 6, wherein said final drive means is a planetary gear assembly having sun, ring and carrier elements, said sun element being rotatably carried on said first ele-ment, one of said ring and carrier elements being con-nected to said drum, the other of said ring and carrier elements being rotatably fixed relative to said frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000402701A CA1170487A (en) | 1981-05-07 | 1982-05-11 | Process for improving and retaining pulp properties |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000904 WO1982000309A1 (en) | 1980-07-14 | 1980-07-14 | Drive mechanism |
| US80/00904 | 1980-07-14 | ||
| US06/261,231 US4340320A (en) | 1980-07-14 | 1980-07-14 | Drive mechanism |
| US261,231 | 1980-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1142012A true CA1142012A (en) | 1983-03-01 |
Family
ID=26762730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000377111A Expired CA1142012A (en) | 1980-07-14 | 1981-05-07 | Drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1142012A (en) |
-
1981
- 1981-05-07 CA CA000377111A patent/CA1142012A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6152846A (en) | Integrated hydrostatic transaxle with controlled traction differential | |
| CA1302306C (en) | Centralized wet-brake and other improvements for running gears with adjustable wheel | |
| US4340320A (en) | Drive mechanism | |
| RU95104318A (en) | Reduction gear engine | |
| US5899826A (en) | Controlled traction cartridge and differential | |
| US4171147A (en) | Flywheel for a construction machine | |
| CA1142012A (en) | Drive mechanism | |
| EP0043916B1 (en) | Drive mechanism for a drum | |
| AU702227B2 (en) | Vibratory pneumatic tire roller | |
| JPH0357754A (en) | Automobile brake system | |
| US4362431A (en) | Vibrating apparatus for vibratory compactors | |
| US3482654A (en) | Brake assembly including counter rotating discs | |
| GB1532331A (en) | Parking brake for a skid steer loaded vehicle | |
| CA1304606C (en) | Transmission housing with a brake attached | |
| US6837650B2 (en) | Split drum for a compacting work machine | |
| DE3567514D1 (en) | Clutch/brake apparatus | |
| CA1076491A (en) | Self-energising disc brake assemblies | |
| US4794708A (en) | Trenching machine boom assembly | |
| EP0053112A1 (en) | Brake preload and release assembly | |
| US4238967A (en) | Driving arrangement | |
| US4937957A (en) | Torsional limiting device for a vehicular ditching apparatus | |
| RU2100599C1 (en) | Working member of mining machine | |
| SU1189926A1 (en) | Road roller | |
| US4452073A (en) | Chassis dynamometer | |
| SU1155676A1 (en) | Side-milling working member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |