SU1207999A1 - Turntable arrangement - Google Patents

Description

eleven

FIELD OF THE INVENTION The invention relates to hoisting and transport machinery, in particular, to rotary support devices and equipment for cranes.

The purpose of the invention is to increase the reliability of the device.

FIG. 1 shows a slewing bearing, longitudinal section; in fig. 2 - the same, with vertical rollers and a compensating ring / in FIG. 3 - the fixation element of the compensating ring on the movable ring, section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2

The device contains two fixed rings, the upper 1 and lower 2, with adjusting shims 3 between them and the movable ring 4. The rings 1 and 2 are bolted 5 to the chassis frame 6, and the ring 4 is bolted 7 to the turning part 8 of the crane. Ring. 2 has a ring gear 9. Rolling bodies 12 and 13 are located between the fixed rings 1 and 2 and the movable ring 4 in the adjacent tracks 10 and 11. The distance -t between the axes 14 and 15 of the raceways is greater than 0 but less than the diameter of the ball . In case on ring 4

20799.92

There are significant horizontal loads, between it and the ring 2 set vertical rollers 16, perceiving these loads.

5 To make the axes of the lower tracks. The 11 swings coincided with the axes of the upper tracks 10, the latter are made on a radially movable compensating ring 17 connected to the ring 4 for ensuring joint rotation by the pin fixing element 18.

The device works as follows.

15 Vertical loads, acting on a pan-tilt device, are transmitted through ring 2 and chassis frame 6. Tilting moment is perceived as lower

20 rolling bodies 13 and upper

12. Horizontal loads are transmitted in the structure (Fig. 1) from ring 4 to the rolling elements 13 on the outer track 11 and then to the fixed

25 ring 2 and chassis frame 6. In the construction with rollers (Fig. 2), the horizontal forces are transmitted by the rollers 16, and the rolling bodies 12 and 13 from the tie-transfer of the horizontal forces are unloaded.

Fi, g.2

„

those,

eleven

13

Aa

F (lg.Z

B-B Back

/ 3

t

G /

13 FiL

eleven

Claims (1)

SUSPENSION AND ROTARY DEVICE, comprising movable and fixed upper and lower rings with raceways forming a ring cavity in which rolling bodies are placed between the ends of the movable and lower stationary rings, characterized in that, in order to increase the reliability of operation, it is equipped with a compensating ring with an element of fixing it on the lower supporting part of the movable ring with the possibility of radial displacement and having in its lower part of the raceway. 120799.9