摘要:
The invention relates to a friction roller planetary gearing, comprising a housing (128), a sun shaft (102) having a first and a second sun (104, 106) arranged on the sun shaft, which are each designed as friction rollers and are axially movable with respect to each other and of which at least one (104) is connected to the sun shaft (102) in a rotationally fixed manner, a planet carrier (112), on which a plurality of stepped planets (108), which are designed as friction rollers and which each have a pair of contact surfaces of a smaller diameter and a pair of contact surfaces of a larger diameter, are rotatably supported, and a first ring (124), which is connected to the housing (128) in a rotationally fixed manner and which is designed as a friction ring. The planets (108) each roll on the suns (104, 106) by means of the one pair of contact surfaces of the planets and roll on the first ring (124) by means of at least one contact surface of the other pair of contact surfaces of the planets, and the contact pressure between the suns (104, 106) and the associated contact surfaces of the planets (108) can be controlled by a first torque-dependent axial displacement device by means of torque-dependent axial displacement of at least one of the suns (106). The invention is characterized in that a second ring (126) designed as a friction ring is provided, which is arranged so as to be axially movable relative to the first ring (124) such that the planets (108) roll on both rings (124, 126) by means of the associated pair of contact surfaces of the planets, the contact pressure between the rings (124, 126) and the associated contact surfaces of the planets (108) being controllable by a second torque-dependent axial displacement device by means of torque-dependent axial displacement of at least one of the rings (126).
摘要:
The invention relates to a transmission and differential gearing (1) with a housing (25), with an input shaft (2) and two output shafts (3, 4) arranged coaxially with respect to the input shaft (2), wherein a transmission section and a differential section (5) are provided, wherein the transmission section has two planet stages, namely an input stage (6) and a load stage (7), wherein the sun wheel(12) of the input stage (6) is actively connected to the input shaft (2), wherein the load stage (7) has a ring gear (13) fixed to the housing, and the sun wheel (14) of said load stage can be or is actively connected via a web (15) to at least one planet wheel (16) of the input stage (6), and wherein at least one planet wheel (17) of the load stage (7) is actively connected via a web (20) to an input shaft of the differential section (5). The requirement for construction space is reduced and the use flexibility increased by the fact that the ring gear (19) of the input stage (6) can be coupled actively and for conjoint rotation to, or can be decoupled from, a planet carrier (18a) of the planet wheel (16) of the input stage (6) or to, or from, a planet carrier (18b) of the planet wheel (17) of the load stage (7) via a correspondingly provided and/or arranged coupling device (KV).
摘要:
The invention relates to a translational and differential transmission (1) having a housing, having an input shaft (2) and two output shafts (3, 4), arranged coaxially to the input shaft (2), wherein a translation section and a differential section designed as a spur gear differential (5) are provided, wherein the translation section has two planetary stages, namely an input stage (6) and a load stage (7), wherein the sun wheel (12) of the input stage (6) is operatively connected to the input shaft (2), wherein the load stage (7) has a hollow wheel (13) fixed to the housing. The sun wheel (14) of the load stage (7) can be operatively connected to at least one planetary gear (16) of the input stage (6) via a bridge (15) and at least one planetary gear (17) of the load stage (7) can be operatively connected to the hollow wheel (19) of the input stage (6) via a bridge (18). A compact design is enabled according to the invention in that one of said connections is designed as a switchable connection and the other is designed as a fixed connection, namely that the hollow wheel (19) of the input shaft (6) can be operatively coupled to and decoupled from the bridge (18) of the load stage (7) via a correspondingly provided and/or arranged coupling device (KV1 and KV2) (first alternative), or the sun wheel (14) of the load stage (7) can be operatively coupled to or decoupled from the bridge (15) of the input stage (6) (second alternative).