One or more portions of an agricultural implement may have components that can be adjusted to adjust the height of the portions. This can allow the implement to be used in a transport position or in a field use position. To better control the change in the height, an implement can include a mechanical control valve that mechanically controls an input to one or more actuators that are providing the height adjustment. The mechanical control valve can be used to attempt to synchronize the actuation or more than one actuator so that the height of the implement is adjusted in a controlled manner. The mechanical control valve can be self-adjusting to maintain a synchronized change in height.

One or more portions of an agricultural implement may have components that can be adjusted to adjust the height of the portions. This can allow the implement to be used in a transport position or in a field use position. To better control the change in the height, an implement can include a mechanical control valve that mechanically controls an input to one or more actuators that are providing the height adjustment. The mechanical control valve can be used to attempt to synchronize the actuation or more than one actuator so that the height of the implement is adjusted in a controlled manner. The mechanical control valve can be self-adjusting to maintain a synchronized change in height.

An agricultural or industrial implement has a main frame including longitudinal and cross frame members. Rear main lift wheels are connected to rear lift wheel arms that are pivotally connected to the main frame and can be raised and lowered using a hydraulic lift cylinder. Each hydraulic lift cylinder is connected to a center pivot of a lug. The lug has a lower connection point connected to a lug anchor, which is connected to a rear cross frame member. The lug also has an upper connection point connected to two load members. One of the load members extends diagonally forward from the upper connection point and connects to one of the longitudinal frame members located to the left of the lug. Another of the load members extends diagonally forward from the upper connection point and connects to one of the longitudinal frame members located to the right of the lug.

An agricultural or industrial implement has a main frame including longitudinal and cross frame members. Rear main lift wheels are connected to rear lift wheel arms that are pivotally connected to the main frame and can be raised and lowered using a hydraulic lift cylinder. Each hydraulic lift cylinder is connected to a center pivot of a lug. The lug has a lower connection point connected to a lug anchor, which is connected to a rear cross frame member. The lug also has an upper connection point connected to two load members. One of the load members extends diagonally forward from the upper connection point and connects to one of the longitudinal frame members located to the left of the lug. Another of the load members extends diagonally forward from the upper connection point and connects to one of the longitudinal frame members located to the right of the lug.

An agricultural implement has a main frame including fore-to-aft and cross frame members. Main lift and transport wheels are connected to rockshaft pedestal arms that are pivotally connected to the main frame by way of a rockshaft held by the main frame. The rockshaft is held spanning a distance between upper and lower fore-to-aft frame member components.

An agricultural implement has a main frame including fore-to-aft and cross frame members. Main lift and transport wheels are connected to rockshaft pedestal arms that are pivotally connected to the main frame by way of a rockshaft held by the main frame. The rockshaft is held spanning a distance between upper and lower fore-to-aft frame member components.

A forward folding implement is provided. The implement includes a telescoping tongue to allow forward folding wings of the implement. At one end of the tongue are positioned transport wheels that are used to level the height of the frame during planting to keep the row units at determined heights of the single plant uniform depth, while also providing a support for the implement during transport of the implement. A transport wheel rotating assembly is provided to rotate the transport wheels about a pivot point such that the transport wheels will adjust the height of the implement, and also increase or decrease the length of the wheelbase between the tractor tires and the transport tires to increase the maneuverability and transportability of the implement both within a field and outside a field. The assembly includes a linkage and a cylinder connected to the implement.

A forward folding implement is provided. The implement includes a telescoping tongue to allow forward folding wings of the implement. At one end of the tongue are positioned transport wheels that are used to level the height of the frame during planting to keep the row units at determined heights of the single plant uniform depth, while also providing a support for the implement during transport of the implement. A transport wheel rotating assembly is provided to rotate the transport wheels about a pivot point such that the transport wheels will adjust the height of the implement, and also increase or decrease the length of the wheelbase between the tractor tires and the transport tires to increase the maneuverability and transportability of the implement both within a field and outside a field. The assembly includes a linkage and a cylinder connected to the implement.

The invention relates to a hydraulic positioning device for an agricultural implement, wherein preferably a uniform movement of several hydraulic cylinders is achieved by using a progressive distributor.

The invention relates to a hydraulic positioning device for an agricultural implement, wherein preferably a uniform movement of several hydraulic cylinders is achieved by using a progressive distributor.