SU1212911A1 - Vacuum cargo-gripping device - Google Patents

Description

FIELD OF THE INVENTION The invention relates to lifting and transport engineering, in particular, to vacuum lifting devices.

The purpose of the invention is to reduce energy consumption.

MI FIG. 1 shows schematically the proposed load gripping device, general view; in fig. 2 — diaphragm chamber with suction and discharge nozzles when operating simultaneously in the pumping and pumping mode; on ft 3 - the same, when working in pumping mode; in fig. 4 - the same, when working in Hai-net mode.

The vacuum lifting device contains a pumping unit with diaphragm chambers 1 of double action, sucking 2 and forcing 3 branch pipes of which through check valves 4 and 5 of the type 1y with cavity A and B and to the cumulative receiver 6. And the vacuum cavity A and cavity excess Dag1- Lepi B are supplied with measuring devices 7 and 8, respectively, and the cavity B, in addition, with a safety valve 9.

Cavities A and B of receiver 6 are connected via a three-position distribution valve 10 and filters 1 1 e with suction heads 12, which are in contact with a pick-up gear 13.

Each diaphragm chamber 1 consists of a housing 14, which is divided into working cavities C and D by a diaphragm 15, fixed in housing 14 and on a drive rail 16.

Each of the working cavities C and D of the diaphragm chamber 1 is connected, respectively, through suction check valves 7 and 8 and three-way two-position valves 19 and 20 to the atmosphere or suction pipe 2, and through valves 21 and 22 and three-way two-way valves 23 and 24 - with the atmosphere or with a pressure pipe 3.

Vacuum lifting device operates as follows.

In the initial position, all remotely controlled elements of the system are de-energized. When this suction head 12 through the filters 11 and the control valve 10 is connected to the atmosphere, the cavity E5 and G diaphragm chambers 1 e the purpose of unloading the diaphragm 15 is connected to the atmosphere through three-way two-way valves 19 and 20 suction check valves 17 and 18.

The cavities A and B of the accumulating receiver 6 can be respectively under vacuum and overpressure, which maintains the state after the completion of 5 previous operations.

For hoisting and transport operations, valves 19 and 20, 21 and 22 are put into a position, for example, shown in FIG. 2, and the pump unit drive. At the same time cavity G

0 of the diaphragm chamber 1 operates in the pumping mode, and cavity B in the pumping mode. In cavities A and B, receiver 6 creates a vacuum and an excess pressure to the values necessary for production.

works controlled by measuring instruments 7 and 8. If the pumping unit has several diaphragm chambers 1, the choice of their mode of operation is determined by the operator depending on which parameter is the vacuum or

0 overpressure - it is important to raise to the set value or maintain within specified limits. Therefore, the diaphragm chambers 1 can work in any of those indicated in FIG. 2-4 combinations.

Upon reaching the hollow x. A and B

the receiver 6 of the required values of vacuum and overpressure, the suction heads 12 are lowered onto the load 13 and the inclusion of the distribution valve 10 times. The cut filters 1 communicate them with the cavity A of the receiver 6. In the cavities of the suction heads 12, a vacuum is created and the load 13 is gripped followed by lifting and transportation.

After transportation and stowage of the cargo 13, it is released by switching the distribution valve 10 to communicate the cavities of the suction heads 12 through the filters 1 1 with the cavity B of the receiver 6. Under the influence of excessive pressure, the cargo 13 is released,

0, after which the suction heads 12 are raised, and the control valve 10 is switched to the neutral position, which blocks the channels connecting it with the cavities A and B of the receiver 6.

The cycle of seizure, transportation and stowage of cargo 13. can be repeated many times.

Switching on and off of the pumping unit does not depend on the technological cycle of the device operation and can be carried out according to the indications of measuring instruments installed on the receiver.

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Claims (1)

A VACUUM LOAD-CAPTURE DEVICE containing a vacuum pump connected to its receiver by suction pipe and suction heads connected through a three-position distribution valve to the receiver cavity, atmosphere and high pressure source, characterized in that, in order to reduce energy consumption, the receiver is made with an additional cavity, connected to the distribution valve and the discharge pipe of the vacuum pump, while the latter is made diaphragm type with two chambers, each of which by two on-off valves communicated with the corresponding cavity of the receiver and the atmosphere. Figure 1 SU „„ 1212911