Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60D—VEHICLE CONNECTIONS
  • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
  • B60D1/58—Auxiliary devices
  • B60D1/66—Props
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
  • B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
  • B60S9/04—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting mechanically
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D49/00—Tractors
  • B62D49/06—Tractors adapted for multi-purpose use
  • B62D49/065—Coupling of multi-purpose tractors with equipment

Definitions

• the present invention relates to an arrangement for folding up and folding down a supporting leg on the tow-bar of towed agricultural implements.
• One embodiment of such an arrangement is already known from Swedish Patent 353-687, which shows and describes an arrangement wherein the shaft on a half-trailer cart or the like for attachment to the traction vehicle is equipped with a supporting prop which is mounted on the shaft and can be pivoted from a position in which it supports the shaft into an ineffective position under the effect of a lever rod, one end of which is designed to be acted on by the tractor and the other end of which pivots the supporting prop.
• the arrangement also comprises a device for locking the supporting prop in the folded-down position.
• the arrangement according to the Patent has obviously been beset with problems, since it has not become generally used.
• the arrangement according to the present invention has the design and is endowed with the characteristics which can be found in the accompanying Patent Claims.
• Figure 1 shows schematically a side view of an embodiment of a tow-bar with the supporting leg folded down
• Figure 2 shows the same tow-bar with the supporting leg folded up.
• a tow-bar 2 is equipped with a towing eye 3, and on its lower face it has a lug with a guide pin 15 on which the upper end of a supporting leg 1 is mounted pivotably.
• the supporting leg 1 is equipped at its upper end with a projection 16 which points backwards and along the tow-bar 2 when the supporting leg is folded down, this projection being equipped at the rear end of its upper edge with an abutment stop 17 pointing towards the rear.
• a sleeve 14 for a locking piston 13 is attached to the projection 16 adjacent to its free edge, in such a way that the locking piston 13 extends at right-angles to the supporting leg 1.
• the locking piston 13 is designed so that it may be moved between a terminal position wherein oneof its ends projects out of the sleeve 14 and beyond the rear edge of the projection 16. At its other end, which is permanently located outside the sleeve 14, it is connected via a pivot 12 to one end of a rod 11, the other end of which is connected via a pivot 10 to the free end of one arm 6 appertaining to a two-armed lever 6, 7 and which points upwards when the supporting leg 1 is folded up.
• the two-armed lever can be pivoted around a hinge 8 at the free end of the tow-bar 2.
• Its other arm 7 is equipped with a perpendicularly projecting plate 21 which is designed to rest against the towing eye 5 when the supporting leg 1 is folded up, and which is equipped with a throughbore 9 which in this position corresponds with and is co-axial to the towing eye 3.
• a tensioning spring 20 is attached between the tow-bar 2 and the arm 6 so that it tries to pull the arm 6 backwards.
• the towing eye 3 When the towing eye 3 is to be connected to a towing hook 4 which can be raised and lowered, on a tractor or some other traction vehicle, the latter is reversed until the towing hook 4 comes centrally under the towing eye 3, after which the towing hook 4 is raised so that it engages in the towing eye 3 and lifts it, together with the tow-bar 2, so that the supporting leg 1 is lifted from the ground. In so doing, the point of the plate 21 comes immediately into contact with a contact surface 5 rigidly connected to the tractor centrally above the towing hook 4. As lifting continues the plate 21 begins to be pressed downwards against the contact surface 5 and generally engages in a cut-out in it.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Agricultural Machines (AREA)
• Supports For Plants (AREA)
• Harvesting Machines For Root Crops (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20342369

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (3)

Family Cites Families (3)

• 1980
  • 1980-12-01 SE SE8008416A patent/SE424976B/sv unknown
• 1981
  • 1981-12-01 EP EP81903206A patent/EP0073200A1/de not_active Withdrawn
  • 1981-12-01 WO PCT/SE1981/000349 patent/WO1982001855A1/en active Application Filing
• 1982
  • 1982-07-15 NO NO822448A patent/NO822448L/no unknown
  • 1982-07-22 DK DK328982A patent/DK328982A/da not_active Application Discontinuation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events