SU1402559A1 - Remote support of cargo-hoisting machine - Google Patents

Abstract

The invention relates to the field of lifting and transport machinery, namely, to the outriggers of a lifting machine. The purpose of the invention.} / F G "2 1 ... /. J ... (M. I h y 1 / x-Tt h simplify the design and increase reliability of operation. The support contains a movable beam 1 with a hydrocylide 2 moving it, in the stem 3 of which two channels 4, 5 are made to communicate it cylinder and piston cavities with cylinder and piston cavities of the jack hydraulic cylinder, two pressure spools 10, 12c check valves, hydraulic valve 9, while the rod of the hydraulic cylinder of the extendable beam is divided into two isolated from each other main and additional cavities communicated with one of the outlets iodistributor through parallel sections of the hydroline, in the first of which the second pressure valve is installed. 1 p.% 6 (L with

Description

The invention relates to a lifting and transport machinery, in particular to BbiHOcHbii-f supports of a lifting machine.

The purpose of the invention is to simplify the design and increase the reliability of the work.

The drawing schematically shows the outrigger.

The support consists of a sliding beam 1 with a hydraulic cylinder 2 of its movement. : In the stem 3 of the hydraulic cylinders 2 are made (two channels 4 and 5 for connecting its Stock A and piston B cavities with the corresponding cavities A and B of the Out-cylinder 6 of jack 7 located at the end of the beam I. The hydraulic cylinder 2 is designed in such a way that its rod The cavity is divided into two isolated cavities: main A and additional 8. Hydraulic system of outboard support includes a hydraulic valve 9, a main pressure valve 10 with a return valve - Pan 1, an additional pressure valve 12 with a check valve 13. A distributor of 9 pipes the wire 14 is connected with an additional cavity 8 $ t via the pressure spool 12 and the pipeline 15 - with the main rod space A of the hydraulic cylinder 2. Piston hollow B of the hydraulic cylinder 2 is connected to the valve 9 by pipeline 16. The piston cavities B and B are hydraulically connected through the channel 5 to 3, pipeline 17, pressure junction plate 10. Rod rods A and A, hydraulic cylinders 2 and 6. are hydraulically 4 interconnected by pipeline 18 AND channel 4 in the rod 3. In the extended position of the yalka, the entrance to the channel 4 is located in an additional cavity 8.

The outrigger support, controlled by the hydraulic distributor 9, performs two operations: extension and retraction.

The extension operation is as follows. From the hydraulic distributor 9, pressure is supplied to the pipeline 16, the gas flows into the cavity B, and then through channel 5 in the rod 3 of the hydraulic cylinder 2 it spreads to the pressure slide valve 10. The spool 10 is set to a pressure higher than the pressure required for the beam 1 to move. I act on the piston of the hydraulic cylinder 2, advances the beam 1. In this case, the working fluid is drained from the rod end A of the hydraulic cylinder 2

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pipe cut 15, check valve 13, hydraulic distributor 9.

After the extension of the beam 1, which corresponds to the full extension of the rod 3 of the hydraulic cylinder 2, the pressure in cavity B grows and quickly reaches the value to which the pressure valve 10 is set. It works, passes pressure in the piston cavity B of the hydraulic cylinder 6. The hydraulic cylinder 6 of the jack advances , while draining from its rod end A, occurs through the pipeline 18, the channel 4 in the rod 3, the additional cavity 8, the pipeline 14, the valve 9.

The closing operation is reversed. From the valve 9, the pressure is supplied to the pipe 14 and feeds into the additional cavity 8. The pressurized spool 12 is set to a pressure higher than the pressure required to raise the rod of the hydraulic cylinder 6 of the jack. From cavity 8, pressure spreads through channel 4 in rod 3, pipeline 18 to rod cavity A, and hydraulic cylinders 6 of the jack. The hydraulic cylinder rod 6 is raised, the working fluid is drained from the cavity B of the hydraulic cylinder 6 through the check valve 11 of the pressure slide valve 10, the pipeline 17, the channel 5 in the rod 3, the piston cavity B of the hydraulic cylinder 2, the pipeline 16, the hydraulic valve 9. After moving the rod of the hydraulic cylinder 6 of the jack in the extreme upper position, the pressure in cavity A and the entire hydraulic line to the distributor 9 increases to the value to which the pressure valve is adjusted 12. The spool 12 is activated, pressure passes into the rod end cavity A of the hydraulic cylinder 2

The piston of the hydraulic cylinder 2 is moved to the initial position, moving the initial beam 1 to the initial position. In this case, the drain from the cavity B of the hydraulic cylinder 2 takes place through the pipeline 16 to the hydraulic distributor 9.

Claims (1)

Invention Formula The outrigger support of the lifting machine, containing an extension beam with a hydraulic cylinder of its movement, in the rod of which two channels are made to communicate the rod and piston strips 31402559 The hydraulic cylinders, respectively, which are located in the face bar-rod and piston cavity of the cylinder core, the main and additional cylinder of the jack, the mounted nanometer cavity are connected to one end of the sliding beam, two pressure points of the outlets of the distributor are coupled to the return valve, and Parallel sections of the hydroline, in the rez one of which is the piston cavity of the first of which the second hydraulic cylinder of the jack is mounted, a pressure valve is connected, and the corresponding channel in the hydraulic rod -the channel for communication of the rod cylinder of the movable beam, the communicating JQ of the cavities of the hydraulic cylinders to the jack with the piston cavity of the latter, and the sliding beam are made in the rod of the hydraulic line and the distributor connected to the pressure and drain rod of the hydraulic cylinder a jack-line, which is different with additional rod stock, in order to simplify the design of the hydraulic cylinder of extendable beams and increase the reliability of operation, in the extended position of the latter, and The hydraulic cylinder of the out-piston cavity of the hydraulic cylinder of the extendable beam is divided into two movable beams connected to the second distributor of the direct additional cavity, separated from each other by the main outlet and the last outlet.