SU1252279A1 - Hydraulic lift - Google Patents

Description

This invention relates to the iio; ibt Mno-face of tailor-made machinery, in particular to hydraulic elevators.

The purpose of the invention is to reduce the energy intensity of the hydraulic elevator in operation and to increase the height of the cabin lift.

FIG. 1 shows a hydraulic elevator, a general view; in fig. 2 is the same as the embodiment.

The elevator contains a shaft I, in which the guides 2 cabins 3 and the guides 4 balancing weight are counterbalanced 5. The flexible traction arm consists of three parts. The cab; i and the counterweight 5 are suspended at the ends of the flexible cable body 6, covering the outflow blocks 7 and 8. The mass of the counterweight 5 is chosen such that it balances the mass of the cab 3 completely and half of the maximum: the total mass of the load lifted by the elevator.

In order to avoid self-lowering with an empty cockpit 3 of the pivot-weight S, the free end of the second polyspast system, which is fixed by the block 1 1, and the movable block, mounted on the second flexible traction body 10 of the second flexible traction body 10, is attached to it from above. 12. mounted on the rod 13 of the hydraulic cylinder 14. The second end of the flexible THIODUIO c;) and 10 fixedly mounted in HjaxTe 1.

In order to avoid independent lifting of the counterweight 5 under the influence of 1 | Along the cab 3, one end of it is attached to one end of the third flexible traction body 15 of the polyspast system, which is fixed stationary in the shaft 1 by the block 16 and the movable block 17 mounted on the rod 18 of the second hydraulic cylinder 19. The second end of the traction body 15 is fixed in mine 1.

The hydraulic cylinders 14 and 19 are connected via pipelines, respectively, by multi-position bypass valves, 20 and 21, which in turn are connected to the hydraulic pump 22 and the tank 23 by a pipeline.

It is possible to perform a hydraulic elevator, in which the counterweight 5 is provided with a withdrawal unit 24. A flexible coupling body b, at one end of which a cab 3 is attached, bends around the withdrawal units 7 and 8, then goes around the withdrawal unit 24 of the counterweight 5 and with the second end attached at the top point parts of mine 1, creating a polyspast

0 counterweight suspension 5.

Suspension of the counterweight 5 on the chain hoist allows to reduce the size of its stroke compared to the distance that the cab 3 travels by two times proportional to the multiplicity of the chain hoist, which increases the lift height of the cab 3 of the elevator compared to the hydraulic elevator in the first lift. P and l two) without changing the stroke of the rods 13 and 18. Multiposition pen; 1usk valves 20 and 21 connect the foam pipe between themselves and with the outlet and inlet of the hydraulic pump 22, which is driven by an electric motor 25. Such The kinematic scheme of the elevator allows to position the hydraulic cylinders Y and 19 in ii) () Ci;) aiiciBO of mine 1 under the projection of the weight of B.

The elevator works as follows. :-).: 1kg |) Odie actuates hydraulic pump 22, which, depending on the position of MULTIPLE 1010 bypass valves 20 n 21, ejects rod 13 or 18 from cylinder 14 and 19. Extending, rod 13 raises 6; ioK 12 and thereby selects flexible m 1 (l, 1st body 10 of the chain hoist, raise the counterweight 5. Lift, the last m is not the flexible body 15, part of the rod 18 to slide into the cylinder 19, at the same time displacing the working fluid from pi. Tindra 19 in the tank 23. Simultaneously with the lifting of the counterweight 5, the elevator car II is lowered under its own weight. alternately rods 13 and 18

0 moves the elevator car.

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Claims (2)

I. HYDRAULIC LIFT, comprising a cabin mounted on guides fixed in the shaft and suspended on a flexible traction body covering fixed blocks, balancing the cabin cargo, kinematically connected to the cabin, and a drive including a source of working fluid under overpressure in communication with a hydraulic cylinder having a rod, characterized in that, in order to reduce energy consumption and increase the lifting height, it is equipped with two auxiliary traction bodies, a second hydraulic cylinder with a rod and an additional movable and fixed tap-off units, the first of which are mounted on the hydraulic cylinder rods, and the second - in the shaft pit, both hydraulic cylinders mounted motionless on the shaft walls and in communication with the source of the working fluid under excessive pressure through pipelines and valve systems with the possibility of moving them rods in antiphase, while the main traction unit connects the cab with a balancing load, one of the auxiliary traction organs goes around an additional movable unit of one hydraulic indra and its corresponding fixed block, attached at one end to a balancing load from below, and the other to the shaft wall, the other auxiliary traction body bends around the additional movable block of the second hydraulic cylinder and its corresponding fixed block and is attached at one end to a balancing load from above, and the other to the shaft . 2. Elevator by π. 1, characterized in that the hydraulic cylinders through pipelines and multi-position valves are interconnected with each other and with the inlet of the source of the working fluid under high pressure. SU. „, 1252279