SU742371A1 - Hoist - Google Patents

Description

(54) LIFT

one

The invention relates to lifts used in the milling industry, and is intended for loading with floor trolleys of meat into the receptacles of tops, meat cutters, sausage syringes, ground meat mixers and other process equipment.

There are known lifts consisting of a jas, a tipping cargo platform moving in a vertical plane, and. drive platform. Moreover, the loading platform is equipped with a device for fixing the floor trolley, and on the frame of the lifter there is a special stop for tilting the loading platform. On some lifts, the loading platform is made in the form of a bucket, for feed material C.

The disadvantages of these lifts are the unreliability of the nodes of tipping and their fragility.

The closest: to the proposed is a lift that contains a rack and a tilting load platform, which is mixed on it, a locking mechanism 2.

The disadvantages of this lift are the insufficient durability of the tipping unit, consisting of a stop and a lever with a roller, as a result of constant dry friction under heavy loads. As the stop and roller wear out, the reliability of the lift operation decreases and there are cases of system jamming. A small radius of rotation of the roller in the stop causes an increase in the load in the drive at the time of tipping over by 2-3 times, which makes it difficult to adjust the system of the drive overload, resulting in rapid wear of the drive parts.

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

Claims (2)

The goal is achieved by the fact that the locking mechanism for the load contains a holding lever with a figured slot, mounted on a fixed axis, and on the loading platform an obstinate finger interacting with a swinging lever is attached to curvilinear working surfaces that repeat the inner surface of the slit. 3 Even a slight rotation of the tug lever relative to the thrust finger while lifting the loading platform ensures a reliable closure of the thrust finger in the slot of the dumb lever. Attaching a pendulum lever at the end of a fixed axle attached to a rack with several earplugs with nuts and locknuts and three special washers, the middle of which is elastic (made, for example, from polyurethane), ensure not only an unmistakable contact of the retaining pin into the slot lever lever, but also a smooth tilting of the loading platform. The process of overturning the loading platform with the cart loaded with raw materials does not cause a sharp increase in the load in the drive, since in the proposed lift, the distance from the throat lever to the axis of its rotation has a significant value (approximately 400-500 mm). The elastic washer permanently compensates for the wear of the washer in contact with the pendulum lever, and provides the necessary force to ensure reliable and stable operation of the pendulum lever (finding it in a predetermined position). FIG. Figure 1 shows the Lift to General view; in fig. 2 - cargo platform in the edge of its upper position; in fig. 3 - attachment of the swing lever to the fixed axis; in fig. 4 - thrust finger at the moment of entry into the slot of the swing lever; in fig. 5 - stop finger after closing in the slot of the swing lever. The elevator contains a rack 1 inside which the drive is placed, a cargo turn platform 2 with a stop finger 3 mounted on it, designed to tilt the platform around axis 4, the swing lever $, a slot 6 on the rotor lever, the fixed axis 7 fixed on the stand ke 1, studs 8 and nuts 9 for fastening the swing lever 5 to the axis 7 using a washer 10, an elastic buffer washer 11 and a shaft 12. The drive of the elevator and the carriage for raw materials are not shown in the drawings). The lift works as follows. The cart with the raw material is manually rolled on the loading platform 2 and the special tool (not shown in the drawing) is fixed on it. When the drive is turned on, the load platform 2, together with the carriage, begins to rise. When you reach the lever 5, the stop finger 3 of the loading platform enters the slot 6 of the lever 5. The platform 2, continuing to move, begins to tilt smoothly around axis 4, and at this time the lever 5 rotates relatively fixed axis 7 towards the tilts of the platform van, ensuring uniform rotation of the loading platform 2 (the swinging arm direction is indicated by arrow A). The thrust finger 3, shifting together with the cargo platform, provides an instant closure of itself in slot 6, as the finger 3 together with the platform 2 rotates around axis 4 in the direction of the top (arrow B), ensuring relative counter-rotation of the finger 3 and of the shed 6 (Fig. 5). After overturning of the loading platform with the trolley at the angle of repose, the raw material is poured into the loading process equipment under the action of its own weight. Then the switch is activated and the drive is turned off. By activating the drive to lower the load platform with the empty trolley, it returns down to its original position. Equal and constant loads on the drive elements during lifting and at the time of loading from the transport trolley, provided with the construction of a swing lever, increase the reliability of the lift and increase its service life by 35-40%. The proposed mounting of the swing lever to the axle ensures its reliable operation over a long period of time, since the wear of the plumbing parts (the knuckle and the swing out lever) is compensated by an elastic washer and can be periodically adjusted with nuts. Claims An elevator for cargo, comprising a rack and a tilting loading platform moving along it, a locking mechanism, one of which is a rack. In order to increase the reliability of work, the fixation mechanism contains a pendulum lever with a figured slot, mounted on a fixed axis, and Shch1 a stop pin is mounted on the loading platform, which interacts with a pendulum lever and has curved working surfaces repeating the inner surface of the shaped slot. Sources of information, 1flash in consideration during the examination 1. Gorbatov V.I. nlr. Slowing equipment for enterprises of the meat industry M., Pischeva industrial 1965, p. 251-253. 2. USSR author's certificate number 308734, cl. In 66 F 11/00, 1970. Step Phi.U.8 o // tfd 9 and/. Fi.g.b at