RU1813060C - Step accumulator - Google Patents

Abstract

Usage: the drive relates to construction, to devices for preparing small pieces laid on pallets, to transportation by a forklift. It allows simple means to provide step-by-step lifting of pallets to discrete heights. SUMMARY OF THE INVENTION: consists of a frame with upper and lower pairs of sprockets covered by pull chains with shelves fixed to them. The drive is made in the form of a hydraulic cylinder mounted between the frame and a movable carriage equipped with a traverse. The upper stops are pivotally mounted on the struts of the traverse, and the lower ones on the racks of the frame. When the traverse moves down, the upper stops by means of shelves move the outer branches of the chains down until the lower stops engage the next shelf. In this case, the pallets with products inside the drive are lifted one step up. 2 ill.

Description

The invention relates to construction, to a technique for the production of building materials and products, and can be used to store small pieces laid on a pallet.

The purpose of the invention is to simplify the design.

In FIG. Figure 1 shows a front view of a drive structure; figure 2 is the same side view.

The drive consists of a U-shaped frame 1, on the sides of which a pair of upper 2 and lower 3 sprockets are fixed. The upper sprockets 2 form two pairs, each of which is located on its side of the frame 1 and is rigidly fixed

on the common axis 4. The pairs of lower sprockets 3 are fixed in the same way on their axles 4. The sprockets 2 and 3 are covered by the pull chains 5 with the shelves 6 rigidly fixed on them, connecting two chains of each of the side parts of the device into a single movable unit ( sprockets 2 and 3, chains 5 and shelves b). The drive for moving the shelves 6 is made in the form of a hydraulic cylinder 7, pivotally mounted on one side on the frame 1, and on the other on a carriage 8, placed with the possibility of vertical movement in the guides 9, rigidly mounted on the frame 1. On the carriage 8 is fixed a beam provided with two racks pointing vertically down. At the ends

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the uprights 12 are pivotally fixed to the upper stops 12, under which are placed the stoppers 13 for the rotation of the stops 12, rigidly fixed to the uprights 11. At the bottom on the frame 1 there are also uprights 14, but directed upwards. At their ends, the lower stops 15 are pivotally fixed and the stops 16 rigidly.

The drive operates as follows.

Brick or slag concrete, expanded clay concrete or other stones on flat metal pallets (shown in dashed lines in Fig. 1) are led to the drive and installed in the interval between its two side parts onto the shelves 6. The hydraulic cylinder 7 is turned on to retract the piston. The yoke 10 descends and the upper stops 12, resting on the stops 13, move the shelves 6 of the outer branches of the chains 5 interacting with them down. In this case, the shelves 6 of the inner branches move up, lift the pallets available on the drive. At the end of the lifting path, the shelves of the outer branches located above the shelves that interacted with the lower stops 15 abut against the points of these stops, rotate them around the hinges and pass lower. The stops 15 after skipping the shelves 6 return to their original position under the action of their own weight (or return spring). At this time, the piston of the hydraulic cylinder 7, having exhausted its stroke, stops. The hydraulic cylinder 7 is turned on to extend the piston. The shelves 6 of the outer branches of the tow chains 5 are raised until the lower branches are pressed against the lower stops 15. The chains stop and the cross-beam 10 continues to rise. The upper stops 12 extend to the upper horizontal shelves 6, rotate around

hinges, pass shelves 6 and return to their original position. The drive is ready to receive the next pallet. In this case, the piston of the hydraulic cylinder is completely

out chickpeas. When the entire internal space of the drive is completely filled, the multi-forked loader simultaneously removes all pallets and transports them, for example, to a steaming chamber, where at the same time it unloads them onto a rack whose shelves vertically have a step equal to the step of placing the shelves in the drive.

Advantages of the drive: simplicity of design due to the lack of a sprocket synchronizer and a stepping mechanism (for example, the Maltese cross); simplicity of drive (hydraulic cylinder instead of an electric motor with a gearbox).

Claims (1)

The claims A stepper drive containing a U-shaped frame, on the sides of which are pairs of upper and lower sprockets symmetrically placed, pairwise rigidly mounted on shafts and spanned vertically closed chains with shelves fixed on chains with constant pitch, and a drive for synchronous vertical stepwise movement of the internal branches of the chains up, characterized in that the drive is made in the form of a carriage mounted with the possibility of vertical movement relative to the frame by means of a power cylinder located on the frame, rigidly mounted on the carriage of the beam, mounted on the beam of the upper struts mounted on the frame of the lower struts, and pivotally mounted on the struts of the stops mounted to interact with shelves outdoor chain branches and with rotation limiters. fifteen 1614 l FIG. 1 FIG. 2