| 摘要 |
The invention relates to a device and method for the defined longitudinal shifting of an adjusting device which rotates along in a drive shaft, along the center axis of the drive shaft. The solution according to the invention is characterized in that a working chamber (12) is arranged at the opposite end of the drive shaft (1), into which working chamber a passage hole (7) arranged in the drive shaft (1) opens, wherein a working piston (13) that operatively connects to the working chamber (12) is arranged in such a way that, in the event of a pressure build-up in the working chamber (12), the adjusting device (2) is variably moved against the spring force of a restoring spring (10) by means of a radial piston pump according to the invention that is arranged on the drive shaft (1). |
| 主权项 |
1. Apparatus for defined longitudinal displacement of an adjustment apparatus (2) that rotates along with and within a drive shaft (1), along the center axis of the work shaft, having a drive shaft (1) mounted in/on a housing (3), in a bearing (4), driven by a drive element (5), projecting into a work space (6) filled with pressurized medium, having a through-hole (7), wherein
a spring chamber (8) is disposed in the region of the through-hole (7), and wherein a spring stop (9) is disposed on the adjustment apparatus (2), in such a manner that the adjustment apparatus (2) is always brought back into a defined starting position after every axial displacement, by means of a reset spring (10) that is disposed in the spring chamber (8), and wherein a work chamber (12) is disposed at the end of the drive shaft (1) that lies opposite the drive element (5), into which chamber the through-hole (7) opens, wherein a work piston (13) that enters into an active connection with the work chamber (12) is disposed on the adjustment apparatus (2), in such a manner that when pressure builds up in the work chamber (12), the adjustment apparatus (2) is variably displaced, counter to the spring force of the reset spring (10), and wherein a pump piston (18) having a piston pass-through bore (19), which bore opens into a pressure channel (17) disposed in the housing (3), is disposed in the housing (3), so as to pivot, and wherein the drive shaft (1) is configured as an eccentric shaft in the region of the pump piston (18), or wherein an eccentric bushing (21) is disposed in the region of the pump piston (18), on the drive shaft (1), so as to rotate with it, wherein a suction kidney (22) connected with the work space (6), on the one hand, and a pressure kidney (23) that lies opposite this suction kidney (22) on the circumference of the eccentric mechanism, on the other hand, are disposed in the cam, in each instance, wherein the pressure kidney (23) has a/multiple transfer bore(s) (24) disposed in the eccentric mechanism, which bore(s) connect(s) the pressure kidney (23) directly with the ring space (11), and wherein a cylinder ring (25) having a piston bore (26) for the pump piston (18) is disposed on the outer mantle of the eccentric bushing (21), so as to rotate, in such a manner that when the eccentric bushing (21) is rotating in the piston bore (26) of the cylinder ring (25), the pump piston (18) “works,” i.e. moves vertically up and down in oscillating manner, and wherein a valve seat (27) is disposed in the housing (3), into which seat the pressure channel (17) opens, on the one hand, and a return line (28) connected with the work space (6) opens, on the other hand, and wherein a solenoid valve (29) is disposed in the valve seat (27), between the pressure channel (17) and the return line (28). |
