A base for sanding machines, grinding machines or the like includes a body (10) connectable to a machine (M) or integral therewith, the body (10) being provided with at least three supports (P) arranged in such a manner that their ends (P) lie on a plane (L) and configured in such a manner that at least one tool (T) of the machine projects at least partly beyond the plane (L) by a portion (D), the body (10) being provided with elements adapted to vary the position of the plane (L) with respect to the tool (T).

A multipurpose rollable moving device is provided. The multipurpose rollable moving device includes: a spherical driving wheel; a driving device that is installed within the driving wheel in order to apply a torque to the spherical driving wheel; a docking portion that is installed within the spherical driving wheel to generate a magnetic force; and a mounting portion that may be attached to a surface of the spherical driving wheel by a magnetic force of the docking portion and that may mount an article. Therefore, the multipurpose rollable moving device can mount an article and easily stably move in an omnidirection on the ground.

A multipurpose rollable moving device is provided. The multipurpose rollable moving device includes: a spherical driving wheel; a driving device that is installed within the driving wheel in order to apply a torque to the spherical driving wheel; a docking portion that is installed within the spherical driving wheel to generate a magnetic force; and a mounting portion that may be attached to a surface of the spherical driving wheel by a magnetic force of the docking portion and that may mount an article. Therefore, the multipurpose rollable moving device can mount an article and easily stably move in an omnidirection on the ground.

A spherical wheel to move a vehicle comprises two caps, the surface of which follows the spherical surface of the wheel, the caps being articulated by means of a pivot link relative to a shaft. The wheel further comprises two casters each arranged in an opening of each of the caps, the opening centered about the axis of the corresponding pivot link, each caster arranged in the extension of the pivot link of the cap concerned. Each caster ensures a rolling at the level of the spherical surface. Radii S of the opening of each cap and r of the corresponding caster are defined to substantially balance forces needed to drive a cap and the corresponding caster when the wheel goes from bearing on the ground on a cap at the edge of the opening to bearing on the ground on the corresponding caster.

A spherical wheel to move a vehicle comprises two caps, the surface of which follows the spherical surface of the wheel, the caps being articulated by means of a pivot link relative to a shaft. The wheel further comprises two casters each arranged in an opening of each of the caps, the opening centered about the axis of the corresponding pivot link, each caster arranged in the extension of the pivot link of the cap concerned. Each caster ensures a rolling at the level of the spherical surface. Radii S of the opening of each cap and r of the corresponding caster are defined to substantially balance forces needed to drive a cap and the corresponding caster when the wheel goes from bearing on the ground on a cap at the edge of the opening to bearing on the ground on the corresponding caster.

A universal rotating module is provided. The universal rotating module comprises a main body including a first portion and two second portions; a main shaft passing through the through groove to pivotally connected to the main body; two bearings sleeved on and pivotally connected to the second portions along the second direction, respectively; two rollers pivotally connected to the second portions along a third direction, respectively; two hemispherical casings fixed to the two bearings, respectively. The first portion includes a through groove extending along a first direction, and the two second portions protrude from opposite sides of the first portion along a second direction, respectively. Each of the hemispherical casing includes a through hole at the top, and a portion of each of the rollers is exposed out of the corresponding through hole.

A universal rotating module is provided. The universal rotating module comprises a main body including a first portion and two second portions; a main shaft passing through the through groove to pivotally connected to the main body; two bearings sleeved on and pivotally connected to the second portions along the second direction, respectively; two rollers pivotally connected to the second portions along a third direction, respectively; two hemispherical casings fixed to the two bearings, respectively. The first portion includes a through groove extending along a first direction, and the two second portions protrude from opposite sides of the first portion along a second direction, respectively. Each of the hemispherical casing includes a through hole at the top, and a portion of each of the rollers is exposed out of the corresponding through hole.

A ball-balancing drive assembly includes a ball having a ball surface and a reference axis extending through a centroid of the ball. Three omniwheel assemblies, each having a motor with a motor axle and an omniwheel configured to rotate around the motor axle are mounted on a chassis configured for supporting the three omniwheel assemblies at radially symmetric spacings with the motor axles oriented at an angle relative to the reference axis and the omniwheels oriented in mutually-orthogonal planes. Each omniwheel frictionally contacts the ball surface to convert rotational motion of the motor axle to torque on the ball.

A ball-balancing drive assembly includes a ball having a ball surface and a reference axis extending through a centroid of the ball. Three omniwheel assemblies, each having a motor with a motor axle and an omniwheel configured to rotate around the motor axle are mounted on a chassis configured for supporting the three omniwheel assemblies at radially symmetric spacings with the motor axles oriented at an angle relative to the reference axis and the omniwheels oriented in mutually-orthogonal planes. Each omniwheel frictionally contacts the ball surface to convert rotational motion of the motor axle to torque on the ball.

A castor supported dolly assembly, but also a dolly assembly that can be used with castors or in some cases without castors, so as to provide a new pallet assembly. The dolly assembly comprises a plurality of dolly members formed of a lightweight, disposable and/or severable material may be interconnected into interchangeable operative positions to define supporting orientations. Each dolly member includes and at least one connecting segment comprising a slot and a base. A connected orientation, of any two of the dolly members, comprises a confronting relation of the bases of engaging connecting segments and an aligned orientation of corresponding passages formed therein, so as to concurrently allow a castor to be removably received and retained in interconnecting relation to the confronting bases. Each dolly member may also include at least one supporting segment structured to receive a castor therein.