A tipping hopper includes a hopper body, hopper rotating supports and a tipping mechanism. The tipping mechanism comprises a connecting rod and a crank. One end of the connecting rod is hinged on the hopper body, and the other end is hinged with one end of the crank; and the other end of the crank is hinged on a crank rotating support through a crank rotating shaft. By optimizing a crank starting point and a crank end point, ensure hopper's position of receiving and discharging material is arranged at or near a dead point of the tipping mechanism so that the working condition of an impact force borne by a speed reducer device is optimized when the tipping hopper is charged and discharged. The mechanism also optimizes the position of the center of gravity of the hopper body and the position of the center of gravity of a charged hopper, so that the center of gravity of the hopper body is located between a hopper rotating hinge point and the connecting rod support hinge point near the hopper rotating hinge point. A force amplification effect of the connecting rod is used to greatly reduce the requirement for the output moment of the speed reducer, thereby greatly reducing the weight of the speed reducer device and the power of a tipping motor and saving motor power and energy consumption of a hoisting system.

A truck bed mounted carrier system includes a frame assembly installable in a truck bed with lateral supports and outer main supports, inner supports that slide within the outer main supports, a center outer support, and a second inner support that slides within the center outer support. A carrier frame coupled to the frame assembly extends from and retracts into the truck bed, supported by radius supports that provide structural integrity when extended. The system features a pulley assist mechanism with gas springs that creates a counterbalance force, a mechanical drive assembly with sprocket and roller chain for movement control, and deployable transport stands for ground support during loading operations. Adjustable bed rail struts with locking mechanisms secure the system to the truck bed without permanent modification. Low-friction materials and strategically positioned slides ensure smooth operation throughout the extension and retraction cycles.

A truck bed mounted carrier system includes a frame assembly installable in a truck bed with lateral supports and outer main supports, inner supports that slide within the outer main supports, a center outer support, and a second inner support that slides within the center outer support. A carrier frame coupled to the frame assembly extends from and retracts into the truck bed, supported by radius supports that provide structural integrity when extended. The system features a pulley assist mechanism with gas springs that creates a counterbalance force, a mechanical drive assembly with sprocket and roller chain for movement control, and deployable transport stands for ground support during loading operations. Adjustable bed rail struts with locking mechanisms secure the system to the truck bed without permanent modification. Low-friction materials and strategically positioned slides ensure smooth operation throughout the extension and retraction cycles.

A towable trailer includes a hitch assembly having a hitch coupler adapted to be removably engaged to a towing vehicle and a main body assembly for supporting and carrying a vehicle. The main body assembly has a central frame having a first frame structure, a second frame structure, and a third frame structure telescopically and removably coupled to each other. The towable trailer also includes a pair side frames removably coupled to the first frame structure and disposed on either side of the central frame. The towable trailer further includes a pair of wheel assemblies removably engaged to the pair of side frames. Each wheel assembly includes a coupling bar removably coupled to the wheel support tube, a wheel, a stub axle assembly connected to the wheel, and a raising and lowering mechanism adapted to selectively enable a pivoting of the stub axle assembly relative to the coupling bar.

A towable trailer includes a hitch assembly having a hitch coupler adapted to be removably engaged to a towing vehicle and a main body assembly for supporting and carrying a vehicle. The main body assembly has a central frame having a first frame structure, a second frame structure, and a third frame structure telescopically and removably coupled to each other. The towable trailer also includes a pair side frames removably coupled to the first frame structure and disposed on either side of the central frame. The towable trailer further includes a pair of wheel assemblies removably engaged to the pair of side frames. Each wheel assembly includes a coupling bar removably coupled to the wheel support tube, a wheel, a stub axle assembly connected to the wheel, and a raising and lowering mechanism adapted to selectively enable a pivoting of the stub axle assembly relative to the coupling bar.

A conveyer system can include a first roller guiding cargo introduced to the inside of a vehicle body in a first direction, a first guide portion disposed parallel to a rotation axial direction of the first roller, and a second guide portion disposed adjacent to the first guide portion, wherein the first guide portion and the second guide portion guide a movement direction of the cargo guided in the first direction to a second direction intersecting the first direction.

A conveyer system can include a first roller guiding cargo introduced to the inside of a vehicle body in a first direction, a first guide portion disposed parallel to a rotation axial direction of the first roller, and a second guide portion disposed adjacent to the first guide portion, wherein the first guide portion and the second guide portion guide a movement direction of the cargo guided in the first direction to a second direction intersecting the first direction.