One variation of a system includes a bogie including: a chassis; a first set of latches configured to transiently engage a first subset of engagement features, in a first array of engagement features on a left rail and in a second array of engagement features on a right rail of the trailer, to retain the bogie below a floor of the trailer; a driven axle suspended from the chassis; and a motor coupled to the driven axle and configured to output torque to the driven axle and regeneratively brake the driven axle. The system further includes a battery assembly: including a second set of latches configured to transiently engage a second subset of engagement features, in the first array of engagement features and in the second array of engagement features, to retain the battery assembly adjacent the bogie; and configured to receive electrical energy from the motor.

A motor shaft anti-rotation structure which is applied to secure a motor shaft to a carrier includes an anti-rotation sleeve and a screwing member. The anti-rotation sleeve includes a sleeve wall surrounding and defining an inner space, a pressing portion protruding radially and inward from the sleeve wall to separate the inner space into a motor shaft region and a screwing member region, a through hole penetrating the pressing portion and communicated with the motor shaft region and the screwing member region, and a restricting protrusion protruding outward from the sleeve wall and corresponding to an inserted hole of the carrier. The screwing member includes a threaded portion inserting in the through hole to screw into the motor shaft, and a head portion connected to the threaded portion and configured to press against the pressing portion. The head portion is configured to be received in the screwing member region.

An air disc brake system for a heavy-duty vehicle comprising an axle. A spindle is attached to an end portion of the axle. At least a portion of an air disc brake assembly is supported by the spindle. A suspension beam has an axle support portion connectable with the axle. An end portion of the suspension beam is spaced from the axle support portion for attachment with the heavy-duty vehicle. The suspension beam may pivot about the end portion of the suspension beam. An actuator actuates the air disc brake assembly. The actuator has a movable member to actuate the air disc brake assembly. Structure is associated with the suspension beam for supporting at least a portion of the actuator. A surface defines an opening in the suspension beam through which the movable member may extend or that may receive and support a portion of the actuator.

A universal chassis frame for medium-duty weight class electric trucks that interfaces with any of a set of multiple configurable rear payload modules. The universal chassis frame includes a central frame having a pair of main frame rails supporting at least two battery modules substantially within an intra-frame space defined between the pair of main frame rails and between at least a pair of cross members transversely interconnected to the pair of main frame rails. A front subframe supports a cab and includes a pair of upper frame members mounted directly above the main frame rails, and a front axle unit mounted under the front subframe. A rear subframe includes a common connection interface to any of the set of multiple configurable rear units and at least one rear axle unit mounted under the rear subframe. Each axle unit has a single electric motor powered by a battery management system.

Provided is a wheel assembly including a housing having a top side, an attachment arrangement on the top side of the housing and configured to be removably attached to an external support, a wheel supported by the housing and arranged below the top side of the housing, a motor supported by the housing and configured to move the wheel, a network interface supported by the housing, and a controller in communication with the motor and the network interface, the controller configured to control the motor based on at least one command received via the network interface. A modular vehicle system is also described.

A modular compact trailer for a utility terrain vehicle or an all-terrain vehicle that includes a trailer frame with a bed and a plurality of walls, at least two axle retention boxes, at least two axles, and a tongue. The at least two axles that are removably couplable to a corresponding axle retention box. The tongue is removably couplable to a front end of the trailer. The modular compact trailer includes a storage configuration in which the trailer frame is upright with components stored within the trailer frame. The modular compact trailer includes a transportation configuration in which the trailer frame fits within a bed of a standard truck bed with components stored within the trailer frame. The modular compact trailer includes an assembled configuration, the at least two axles are attached to the corresponding axle retention box and the tongue is attached to the front end of the trailer.

A system for person mobility devices such as wheelchairs. The system includes a personal mobility apparatus having a wheel support portion, and an axle engaging portion that is attachable to and detachable from the wheel support portion. The wheel support portion may be a body portion or a frame portion of the personal mobility apparatus that is formed separately to the wheel support portion. The wheel support portion may be shaped so as to fit a complementary shape of the axle engaging portion. The system allows for customization of a mobility apparatus for a particular application or user by adjusting the position or orientation of the wheel axles.

There is provided a robotic vehicle (100) for operating in a confined space, such as under a floor of a building, for example a house. The robotic vehicle (100) comprises a chassis (102) having a front (F) and a rear (R) defining a longitudinal direction extending between the front (F) and the rear (R), the robotic vehicle (100) for movement in the longitudinal direction. The robotic vehicle (100) further comprises a plurality of first parts (116a, 116b, 16c, 116d) for a respective plurality of release mechanisms (166), the first parts (116a, 16b, 116c, 116d) each connected to the chassis (102) and each release mechanism (166) for securing a respective wheel (160a, 160b, 160c, 160d) to the chassis (102). Each first part (116a, 116b, 116c, 116d) provides a mounting point for the respective wheel 10 (160a, 160b, 160c, 160d) away from the front (F) or the rear (R) of the chassis (102). Each release mechanism (160) is operable by an operator to release the respective wheel (160a, 160b, 160c, 160d) from the chassis (102) for separate removal of the wheels (160a, 60b, 160c, 160d) and the robotic vehicle (100) from the confined space.

Roller shell has a first cylindrical part and a second cylindrical part. An outer diameter of the first cylindrical part is larger than an outer diameter of the second cylindrical part, and an inner diameter of the first cylindrical part is smaller than an inner diameter of the second cylindrical part. The first cylindrical part fits to a small-diameter bushing part, and the second cylindrical part fits to a large-diameter bushing part. The second cylindrical part has a slit which extends through an outer circumferential surface and an inner circumferential surface and is open at an end surface. The roller shell engages with a step part. An engaging member fits to a groove and engages with the slit. A retainer is formed to have an annular shape and is detachably attached to bushing to hold an end surface of the roller shell.

Some embodiments relate to a vehicle corner module (VCM) connectable to a VCM-connection interface of a reference-frame of a vehicle platform (e.g. for regulating motion of a vehicle). Some embodiments relate to a multi-interface connection-element for connection of multiple electronic or flow vehicle subsystems of a vehicle to a Vehicle Corner Module (VCM). Related methods are disclosed herein.