Abstract

The protection system (5) comprises a first tubular member (13) and a second tubular member (15) which can be slidably inserted into each other and a protection (8) at one end of the first tubular member (13). The protection comprises a protective boot (40) and a first annular element (21) fixed to the first tubular member (13). Further provided for is a second annular element (33) which can be torsionally coupled to the first annular element (21) and which can be decoupled therefrom by means of a mutual movement between the first annular element (21) and the second annular element (33) in a direction approximately parallel to the axis (A-A) of the first tubular member (13). The second annular element (33) is coupled to the protective boot (40) which is provided with members (49) for coupling to a stationary plate (51) which can be connected to a power take-off (9). A drive shaft provided with such a protection system is also described.

IPC Classes  ?

• A01B 71/08 - Means for protecting against dust or the like, or for cleaning agricultural implements
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor

Abstract

The protection system (5) comprises a first tubular member (13) and a second tubular member (15) which can be slidably inserted into each other and a protection (8) at one end of the first tubular member (13). The protection comprises a protective boot (40) and a first annular element (21) fixed to the first tubular member (13). Further provided for is a second annular element (33) which can be torsionally coupled to the first annular element (21) and which can be decoupled therefrom by means of a mutual movement between the first annular element (21) and the second annular element (33) in a direction approximately parallel to the axis (A-A) of the first tubular member (13). The second annular element (33) is coupled to the protective boot (40) which is provided with members (49) for coupling to a stationary plate (51) which can be connected to a power take-off (9). A drive shaft provided with such a protection system is also described.

IPC Classes  ?

• A01B 71/08 - Means for protecting against dust or the like, or for cleaning agricultural implements
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor

Abstract

A radial hole (21.1), in communication with an annular collector (11), is provided in one of the two shafts (3) connected by the clutch to supply a hydraulic fluid to the hydraulic clutch (7) of the transmission.

IPC Classes  ?

• F16D 25/06 - Fluid-actuated clutches in which the fluid actuates a piston incorporated in the clutch
• F16D 48/02 - Control by fluid pressure

Abstract

The drive shaft (1) comprises end universal joints (5, 7) with accident-preventing end protections (19). Each accident-preventing end protection comprises a lubricant reservoir, delimited radially inwardly by a sleeve (63) of an inner fork (23) of the respective universal joint (5; 7) and radially outwardly by a rigid annular structure of the accident-preventing end protection..

IPC Classes  ?

• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor
• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/40 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes

Abstract

The A drive shaft (1) comprises a telescopic shaft (3) having an outer tubular shaft (9) and an inner tubular shaft (11) inserted slidable into the outer shaft (9). A lubrication system is further provided, comprising: a lubricant receiving chamber (39) housed in the inner shaft (11); a lubricant distribution block (41) housed in the inner shaft (11); lubricant supply ports (11.9) for supplying lubricant from the lubricant distribution block (41), through a tubular wall of the inner shaft (11), towards a gap between the inner shaft (11) and the outer shaft (9); at least a lubricant transferring duct (47.1; 47.2) from the receiving chamber (39) to the distribution block (41). wherein the supplying ports (11.9) are distributed in at least two positions offset in direction of the axis (A-A) of the telescopic shaft (3).

IPC Classes  ?

• F16C 3/14 - Features relating to lubrication
• F16C 3/03 - ShaftsAxles telescopic
• F16C 11/06 - Ball-jointsOther joints having more than one degree of angular freedom, i.e. universal joints
• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor

Abstract

The universal joint (5, 7) includes first and second forks (23, 25) each having a pair of arms (61) with seats (61.1) for respective trunnions (27.1) of a spider (27). The arms (61) extend from an outer edge (91.1) of a collar (91) provided to increase the stiffness of the arms and reduce bending deformations thereof under heavy load operating conditions.

IPC Classes  ?

• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor
• F16C 3/03 - ShaftsAxles telescopic
• F16C 21/00 - Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/38 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
• F16D 3/41 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings

Abstract

The universal joint (5, 7) includes first and second forks (23, 25) each having a pair of arms (61) with seats (61.1) for respective trunnions (27.1) of a spider (27). The arms (61) extend from an outer edge (91.1) of a collar (91) provided to increase the stiffness of the arms and reduce bending deformations thereof under heavy load operating conditions.

IPC Classes  ?

• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor

Abstract

The drive shaft (1) comprises end universal joints (5, 7) with accident-preventing end protections (19). Each accident-preventing end protection comprises a lubricant reservoir, delimited radially inwardly by a sleeve (63) of an inner fork (23) of the respective universal joint (5; 7) and radially outwardly by a rigid annular structure of the accident-preventing end protection..

IPC Classes  ?

• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/40 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes

Abstract

The A drive shaft (1) comprises a telescopic shaft (3) having an outer tubular shaft (9) and an inner tubular shaft (11) inserted slidable into the outer shaft (9). A lubrication system is further provided, comprising: a lubricant receiving chamber (39) housed in the inner shaft (11); a lubricant distribution block (41) housed in the inner shaft (11); lubricant supply ports (11.9) for supplying lubricant from the lubricant distribution block (41), through a tubular wall of the inner shaft (11), towards a gap between the inner shaft (11) and the outer shaft (9); at least a lubricant transferring duct (47.1; 47.2) from the receiving chamber (39) to the distribution block (41). wherein the supplying ports (11.9) are distributed in at least two positions offset in direction of the axis (A-A) of the telescopic shaft (3).

IPC Classes  ?

• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor

Abstract

The drive shaft (3) comprises an outer tubular shaft (9) and an inner tubular shaft (11) housed slidable in the outer tubular shaft (9). the inner tubular shaft (11) comprises a hollow body made in a single piece, with a tubular wall extending along an axis (A-A) of the telescopic shaft (3). The tubular wall defines a plurality of longitudinal projections (11.1) extending parallel to the axis (A-A) of the telescopic shaft (3), Each longitudinal projection (11.1) comprises a head surface (11.3), a first flank and a second flank (11.4), said first flank and second flank (11.4) extending between the head surface of the respective longitudinal projection and the bottom of two contiguous longitudinal grooves, between which the longitudinal projection is arranged. The ratio between the width of each flank (11.4) and the distance of the median point of the flank from the axis (A-A) of the telescopic shaft (3) is equal to, or greater than, approximately 0.35.

IPC Classes  ?

• F16D 3/06 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
• F16D 3/84 - Shrouds, e.g. casings, coversSealing means specially adapted therefor