Industrial vehicle with device for releasing the undercarriages without disconnecting the hydraulic system

An industrial vehicle, comprising:

• at least one structure with a chassis and a pair of crawler undercarriages, each of which is driven by a hydraulic motor which transmits motion and torque to a planetary gearbox on which a drive wheel is keyed;
• and
• hooking-release means for releasing the crawler undercarriages from said chassis,
• wherein the hydraulic motor and the planetary gearbox are interconnected through the interposition of at least one transmission device,
• wherein following the operations for releasing the crawler undercarriage from the chassis, the hydraulic motor is released from the at least one transmission device and remains integral to the chassis, keeping its hydraulic connections intact while the planetary gearbox and the at least one transmission device remain integral to the crawler undercarriage,
• wherein the at least one transmission device comprises a shaft, a hub and a hollow sleeve;
• the shaft and the hub being adapted to transmit motion and driving torque from the hydraulic motor to the gearbox,
• wherein the hollow sleeve, which accommodates the shaft and the hub, connect respective flanges of the hydraulic motor and of the gearbox, and
• wherein the hub is hollow and internally bearing a grooved profile with radial toothing and dimensions suitable for matching with a grooved male shaft of the hydraulic motor.

An industrial vehicle, comprising:

• at least one structure with a chassis and a pair of crawler undercarriages, each of which is driven by a hydraulic motor which transmits motion and torque to a planetary gearbox on which a drive wheel is keyed;
• and
• hooking-release means for releasing the crawler undercarriages from said chassis,
• wherein the hydraulic motor and the planetary gearbox are interconnected through the interposition of at least one transmission device,
• wherein following the operations for releasing the crawler undercarriage from the chassis, the hydraulic motor is released from the at least one transmission device and remains integral to the chassis, keeping its hydraulic connections intact while the planetary gearbox and the at least one transmission device remain integral to the crawler undercarriage,
• wherein the at least one transmission device comprises a shaft, a hub and a hollow sleeve;
• the shaft and the hub being adapted to transmit motion and driving torque from the hydraulic motor to the gearbox,
• wherein the hollow sleeve, which accommodates the shaft and the hub, connect respective flanges of the hydraulic motor and of the gearbox, and
• wherein the shaft has a grooved profile with radial toothing at one end and dimensions suitable for mating with a grooved hollow shaft of the gearbox, the shaft having at another end, a grooved profile with radial toothing and dimensions suitable for mating with the hub.