SU44653A1 - Scraper double winch - Google Patents

Description

The proposed double-drum scraper differs from the known such winches, mainly in the compactness of its design and, consequently, in its lower weight with the same power and with the same merits. This construction, described in detail below, is characterized especially by the use of spacer studs therein to press various working parts acting by friction.

In FIG. 1 depicts a general top view of the proposed winch; FIG. 2 and 3 - side view and axial section of the friction clutch in the winch; FIG. 4 shows the braking device applied therein and FIG. 5 is a diagram of a winch control mechanism;

The working and idling drums 2 and 3 are mounted on a fixed axis / freely mounted (Fig. 1). The hollow shaft 4, which is supported by the 8 8 to the support, covers this axis 7 without contact with it. A gear wheel 5 is fixed on it, by means of which gear shaft W receives rotation from motor / 7, and at the ends of shaft 4 two friction clutches 7.7 sit, which serve to turn on and off each of drums 2 and 5. Each coupling 7 consists of a leading part 6 (FIGS. 2 and 3) fixed on the shaft 4 and a brake disc 30, connected by cams to its drum 2 or 3. A tape 12 can touch the rim of the ring from the inside, which at one end secured in part 6 by adjusting bolts 75, and at the other end of the belt 72 it is highlighted on the roller f4, the shackle 24 is rotatable on axis 23 by a roller 22 connected by a spring 29. This shackle 24 is connected by means of another clutch 28 which is perpendicular to the first shackle 26 and is moved along the shaft 4. squeezes the roller 22 to the inner surface of the brake disc 30. As the tape 72 and the roller 22 associated with it are bonded to part 6, they all turn together with the shaft 4, therefore roller 22, having touched face 30, rotates around its axis 23 and with your finger 25 nat guiva through the earrings and 27 and spacing earrings 77, 18 (of which the earring 77 is articulated with the tape 72, and the earring 78 by the hinge 7P is fixed on the part b) The 4 associated drum 2 and 3. With the removal of the coupling 28, the pressing of the roller 22 and the belt 72 is stopped due to the removal of the roller by the spring 29, and therefore the drum is turned off and can freely rotate on the main axis / while winding the rope from it.

At this time, the following device was applied to brake the drum (Fig. 4): on the roller 32 fixed in any part 5 / of the winch frame near the drum, a friction knuckle consists of two parts 33, 34 of which part 34 , sliding, pressed permanently by the spring 36 to the drum brake disc 30, and the brake pad 38. The fist 33-34 and the pad 38 are interconnected by a link 41 and pivotally connected spacing studs 39 and 40, the latter at one end has a fixed support 42. When the drum is disconnected from shaft 4 and gets forced rotation from the coiled rope, fist 33-34 by friction against the brake disc 30 of the drum is carried down (according to the drawing), and the shackle 4J, through the expansion studs 39 and 40; will force the pad 38 to press against the drum and thereby brake it. When the drum is rotated towards the working stroke, the fist 33-34 will be carried upwards and the pads 38 will not be pressed.

In accordance with the foregoing, the winch control is reduced to a permutation of the couplings 28 of both drums, which is performed from a single handle by means of the following drive mechanism. The circular trenches of the coupling 28 include the fingers of the cranks 43 (Fig. 5), mounted on separate axles 44 for each coupling, turned by the moths 46. At the same time, the free ends with longitudinal cuts both the moths 46 are reduced to the coupling 47 sliding along the fixed on the winch frame, the rod 48 and the moths 46 that enter with their fingers into the slots. The clutch 4 is moved by a lever 53, turning the lever 57 on the axis 57 to one side or the other. This movement of the clutch results in its rotation of the moths 46, axes 44 and cranks 43 VI, further shifting the latter clutches 28, causing the inclusion of one of the drums 2

or 3 as needed while simultaneously turning off another drum.

The subject matter of the invention.

Claims (4)

1. Double-drum scraper winch, characterized in that a friction clutch is used to turn on and turn off drums that are freely seated on the axle, for which a spring roller is attached to the part of the clutch, which is rotated by gearing 22, pressed against the brake disc 30, associated with the drum to turn it on by pressing the brake tape 12 to the said washer 30 and discharging to release the tape / 2 and turning off the drum, and for braking the latter in position In conjunction with the coiling of the channel, a device is applied consisting of a friction spring cam 33-34 associated with the brake pad 38 and intended to press it against and away from the drum. 2. The form of the winch under item 1, characterized in that the axis of the roller 22 is fixed on the swivel shackle 24, and the very roller is hingedly connected by a stud 27 with spacing bolts 17, 18 to press to the washer 30 of the tape 12, one end connected to the leading part b, fixed on the hollow shaft 4, which is driven by the gear motor from the motor, for rotating which earring 24 the sliding sleeve 28 connected with it by the earring 26 is designed. 3. The form of the winch under item 1, characterized in that, for the connection of the friction fist 33-34, pressed against the drum by a spring 36, with a shoe 38, an earring 41 is applied, pivotally connected to the spacer earrings 39, 40. 4. Use in winch of claim 1 for displacing the sleeve 28 of the cranks 43 on the axles 44, which are shifted by shifting by means of the lever 53 of the coupling 47, which is connected to the said axes 44 by means of the shafts 46. 33 R j “: iL J Fis5