SU457827A1

SU457827A1 - Screw motor drive

Info

Publication number: SU457827A1
Application number: SU1680285A
Authority: SU
Inventors: Ростислав Максимович Самусь; Роман Тимофеевич Тимоховцев
Original assignee: Предприятие П/Я Р-6256
Priority date: 1971-07-12
Filing date: 1971-07-12
Publication date: 1975-01-25

Description

положений или при по влении на штоке усилий, превышающих предварительное сжатие пружин 10 и 11 буфера, шток прекраш,ает осевое перемещение. А так как вал продолжает вращатьс , то в осевом направлении начинает перемещатьс винт 15. При этом . винт через упорный подшипник и нажимной диск, сжима пружины, отжимает один из подвижных дисков буфера и через толкатель 16 (или 17), воздейству на концевой выключатель, размыкает цепь управлени электродвигателем привода . Одновременно с перемещением подвижного диска перемещаетс и выключатель 18, гидравлического демпфера, способству гашению инерции ротора. После остановки ротора усилие гидравлического демпфера на винтовую пару исчезает, а следовательно исчезает и добавочное усилие, противодействующее развороту ротора электродвигател при запуске .positions or when a force is applied on the rod that exceeds the pre-compression of the springs 10 and 11 of the buffer, the rod stops axial movement. And as the shaft continues to rotate, the screw 15 starts to move in the axial direction. screw through the thrust bearing and pressure plate, compressing the spring, squeezes one of the movable buffer disks and through the pusher 16 (or 17), acting on the limit switch, opens the drive motor control circuit. Simultaneously with the movement of the movable disk, the switch 18, the hydraulic damper, is also moved to help dampen the inertia of the rotor. After the rotor stops, the force of the hydraulic damper on the screw pair disappears, and therefore the additional force that counteracts the rotation of the rotor of the electric motor at start-up also disappears.

Предмет изобретени Subject invention

Claims

1. A motor drive screw comprising a housing, a stator, a hollow shaft rotor, a buffer device limiting axial movement of the screw, a screw and a nut, characterized in that, in order to reduce the length of the drive and increase its reliability, it is provided with a hollow rod with rails, holding the rod from rotational movement, located inside the hollow shaft of the rotor and rigidly connected to the nut, and the screw is installed inside the hollow rod, interacts with the hollow shaft of the rotor by means of a spline connection, made with a gap between the splines and It is connected to a buffer device.

2. The drive according to claim 1, characterized in that, in order to reduce the axial movement of the screw when the drive is disconnected, the buffer device is provided with a hydraulic damper.

W