초록 ▼

An armored personnel carrier (10) includes a hull (14) supported on two undercarriages (12). Each undercarriage (12) includes a primary frame (22) and a plurality of secondary frames (26) which in turn carry wheel members (28). The secondary frames (26) are urged to pivot away from the primary frame

An armored personnel carrier (10) includes a hull (14) supported on two undercarriages (12). Each undercarriage (12) includes a primary frame (22) and a plurality of secondary frames (26) which in turn carry wheel members (28). The secondary frames (26) are urged to pivot away from the primary frame (12) by spring mechanisms (38). The center secondary frames (26c) are each biased outwardly by two spring mechanisms (38) while the endmost secondary frames (26e) are biased outwardly by a single spring mechanism (38). The wheel members (28) are driven by a drive mechanism (64), a primary transmission (58) enclosed within the primary frame (22) and a plurality of secondary transmissions (82) each enclosed within one of the secondary frames (26).

대표청구항 ▼

An undercarriage comprising: an elongate hollow load bearing primary frame; at least three secondary frames; means supporting the secondary frames at longitudinally spaced points on the primary frame for pivotal movement with respect thereto; at least three primary axles each having a first portion

An undercarriage comprising: an elongate hollow load bearing primary frame; at least three secondary frames; means supporting the secondary frames at longitudinally spaced points on the primary frame for pivotal movement with respect thereto; at least three primary axles each having a first portion positioned within the primary frame and a second portion positioned within one of the secondary frames; means supporting each of the primary axles for rotation both with respect to the primary frame and with respect to its associated secondary frame; primary transmission means positioned within the primary frame for drivingly interconnecting at least two of the primary axles; drive means operably connected to the primary transmission means for actuation thereof whereby the drive means and the primary transmission means effect concurrent rotation of the interconnected primary axles; a plurality of secondary axles each individual to one of the secondary frames and each having a wheel receiving member at one end thereof; at least three wheel members each mounted on and secured to the wheel receiving end of one of the secondary axles; means rotatably supporting the secondary axles in the secondary frames with each of the secondary axles extending out of its secondary frame and being rotatably supported in at least one side of its secondary frame; at least two secondary transmission means each mounted in one of the secondary frames and each drivingly interconnecting one of the primary axles and its associated secondary axle; each of the endmost secondary frames having a lever arm extending therefrom towards the center secondary frame; the center secondary frame having two lever arms thereon each extending toward one of the endmost secondary frames; at least two tension springs, one connected between the lever arm of one of the endmost secondary frames and the facing lever arm of the center secondary frame and the other connected between the lever arm of the opposite endmost secondary frame and the facing lever arm of the center secondary frame; the tension springs and the lever arms cooperating to urge the secondary frames and the wheel members carried thereby to pivot away from the primary frame and toward the underlying surface; and the endmost secondary frames and the wheel members carried thereby each being pivoted under the force of one tension spring and the center secondary frame and the wheel member carried thereby being pivoted under the action of two tension springs, whereby the center secondary frame and the wheel member carried thereby receive an increased pivoting force to facilitate skid steering of a vehicle incorporating the undercarriage.