A multi-functional off-road vehicle has a frame which includes a left lateral frame member and a right lateral frame member. The two frame members are connected by a crossbar. Four wheel assemblies are connected to the frame. At least two of the wheel assemblies are continuous tracks. The crossbar includes a track width adjustment actuator which extends and contracts a length of the crossbar and thereby changes a track width of the vehicle.

A multi-functional off-road vehicle has a frame which includes a left lateral frame member and a right lateral frame member. The two frame members are connected by a crossbar. Four wheel assemblies are connected to the frame. At least two of the wheel assemblies are continuous tracks. The crossbar includes a track width adjustment actuator which extends and contracts a length of the crossbar and thereby changes a track width of the vehicle.

A UTV portal axle system is disclosed, including a spindle with a housing for housing input and output drive gears coupled by one or more idler gears. The output drive gear is disposed lower than the input drive gear to provide additional ground clearance to the UTV. The king pin axis angle is substantially the same as that of a stock UTV, while maintaining a scrub radius of substantially one inch or less. This is accomplished by the lower control arm ball joint being located within a recess of the output drive gear. This allows the UTV to be properly controlled when driven at high speeds over rough or uneven terrain. The gears may be interchangeable to allow the gear ratio to be adjusted to be more suitable for use at various driving speeds. A method of changing the gear ratio is also disclosed.

A UTV portal axle system is disclosed, including a spindle with a housing for housing input and output drive gears coupled by one or more idler gears. The output drive gear is disposed lower than the input drive gear to provide additional ground clearance to the UTV. The king pin axis angle is substantially the same as that of a stock UTV, while maintaining a scrub radius of substantially one inch or less. This is accomplished by the lower control arm ball joint being located within a recess of the output drive gear. This allows the UTV to be properly controlled when driven at high speeds over rough or uneven terrain. The gears may be interchangeable to allow the gear ratio to be adjusted to be more suitable for use at various driving speeds. A method of changing the gear ratio is also disclosed.

A suspension structure of a utility vehicle includes: a shock absorber; a knuckle; and an upper arm and a lower arm which connects the knuckle to a vehicle body frame of the utility vehicle, wherein a recessed portion which is recessed downward is formed on the upper arm, and a lower end of the shock absorber is supported by the recessed portion.

A suspension structure of a utility vehicle includes: a shock absorber; a knuckle; and an upper arm and a lower arm which connects the knuckle to a vehicle body frame of the utility vehicle, wherein a recessed portion which is recessed downward is formed on the upper arm, and a lower end of the shock absorber is supported by the recessed portion.

A spreader sprayer system includes a frame member defining a frame body that has a first side, a second side, a front portion, and a rear portion, a first walking member pivotably coupled to the first side of the frame body, a second walking member pivotably coupled to the second side, a first and second plurality of drive wheels, and at least one spray container. The first plurality of drive wheels are disposed on the first side of the frame body and are operatively coupled to the first walking member. The second plurality of drive wheels are disposed on the second side of the frame body and are operatively coupled to the second walking member. Each spray container is coupled to at least one of the first walking member or the second walking member.

The invention relates to a suspension system of a vehicle axle, comprising:a leaf spring (11);a rear attachment device which is configured to be secured to a vehicle frame (2) and which receives a rear end portion (14) of the leaf spring (11) so as to allow said leaf spring rear end portion to slide longitudinally relative to the rear attachment device; wherein:the rear attachment device (24) comprises a fastener (26) extending substantially transversally and a pad (28) secured on the rear attachment device above the fastener;the leaf spring rear end portion (14) is substantially flat and has an upper face (15) in contact with the pad (28) and a lower face (16);and the suspension system further comprises a retaining member (30) which is a piece separate from the leaf spring (11). The retaining member (30) is secured to and under the leaf spring rear end portion (14) by a fixing element (50) located rearward of the pad (28), the retaining member (30) including a front wall (33) arranged forward of the fastener (26), and configured to abut against the fastener (26) in order to prevent a rearward movement of the leaf spring (11) relative to the rear attachment device (24) above a predetermined limit.

The invention relates to a suspension system of a vehicle axle, comprising:a leaf spring (11);a rear attachment device which is configured to be secured to a vehicle frame (2) and which receives a rear end portion (14) of the leaf spring (11) so as to allow said leaf spring rear end portion to slide longitudinally relative to the rear attachment device; wherein:the rear attachment device (24) comprises a fastener (26) extending substantially transversally and a pad (28) secured on the rear attachment device above the fastener;the leaf spring rear end portion (14) is substantially flat and has an upper face (15) in contact with the pad (28) and a lower face (16);and the suspension system further comprises a retaining member (30) which is a piece separate from the leaf spring (11). The retaining member (30) is secured to and under the leaf spring rear end portion (14) by a fixing element (50) located rearward of the pad (28), the retaining member (30) including a front wall (33) arranged forward of the fastener (26), and configured to abut against the fastener (26) in order to prevent a rearward movement of the leaf spring (11) relative to the rear attachment device (24) above a predetermined limit.

A vehicle drive unit and land vehicle comprising the drive unit are disclosed. Each drive unit comprises a pair of longitudinally spaced apart rotatable drive structures. The land vehicle comprises a pair of drive units on opposite sides thereof. The drive units comprise an electric motor for powering the rotatable drive structures and a gear drive assembly comprising structure for disengaging the electric motor. The drive units may be remotely controllable, may be water-tight and may be floatable. The vehicle comprising the drive unit may be amphibious.