SU1234348A1 - Telescopic cylinder of hoist movement mechanism - Google Patents

Description

one

The invention relates to lifting and transport equipment, namely to hydraulic drive devices for lifts.

The purpose of the invention is to increase the reliability of work by eliminating the pinching of the rod in the bottoms of the sections when extending

Fig. 1 shows schematically the telescopic cylinder of the mechanism for moving the elevator in the open position, section; figure 2 - section aa in figure 1; on fig.Z - section bb in fig. one; figure 4 is a resolution; s bb In figure 2.

The unclassified cylinder of the elevator movement mechanism is made with movable 1 and 2 and fixed 3 sections and has a locking device against rotation of the movable sections relative to their axis, including guide 4 for vertical movement of the movable sections 1 and 2 attached to the lower parts of each from movable sections and made in Aida of floating rectangular frames 5 arranged in a horizontal plane, and a centering element b of a non-circular cross section, mounted along the axis of a stationary section 3 and a full telescope opicheskim, the lower part zak- replays on the base 7 fixed section 3, the top - by osnova34348 .2

Research Institute of the lower movable section 2, the floating frame 5 of the guide 4 of the lower movable section 2 is installed with the possibility of interaction

5 with the lower part of the centering element 6, and the upper with its upper part.

The proposed cylinder works as follows.

When the pumping station 8 is turned on, the oil through the switchgear 9 is fed into the working cavity of section 3 and the moving sections 1 and 2 begin to rotate. The centering element 6 secures the sections 4 and 1 against rotation of the sections 5. As the sections of the frame 5 move, the guides 4 slide along the centering element 6. At axial distortion of the lift cylinder, when relative displacement and rotation of the heads of sections 1 and 2 occurs, the centering element 6 is not pinched in frame 5 because the frame is complete with the possibility of moving along the bottom groove (FIG. 2), and the element 6 itself, along the groove of the frame 5 in the direction perpendicular to the movement of the frame 5. At the same time, the external twisting moment, when rotated due to the guaranteed gaps between the plates, is perceived by the surfaces Pi through sections 1 and 2 is transmitted to the base fixed section 3.,

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Compiler A.Leiman Editor V.Kovtun Tehred O. Gortvay Corrector S, Shekmar

Order 2946/27. Circulation 799 Subscription VNIRSHI State Committee of the USSR

for inventions and discoveries I13035, Moscow, Zh-35, Razshska nab., d.4 / 5

Production and printing company, Uzhgorod, Projecto st., A

Claims (1)

(56) Copyright certificate of the USSR No. 612896, cl. 66 F 3/28, 1976, ¢ 54) TELESCOPIC CYLINDER OF THE LIFT MOVEMENT MECHANISM, comprising fixed and movable sections, a locking device against rotation of the movable sections relative to their axis, including guides for the vertical movement of the movable sections, attached to the lower parts of each movable sections, and a centering element of small section, mounted on the axis of the fixed section with the possibility of interaction with the specified guides, characterized in that, in order to increase the reliability of work by exceptions for pinching the rod in the bottoms of the sections when extending, the guides are made in the form of floating rectangular frames placed in the horizontal plane, and the centering element is telescopic, the lower part of which is rigidly fixed to the base of the fixed section, and the upper - to the base of the lower movable section, this floating frame guide Q of the lower movable section is installed with the possibility of interaction with the lower part of the telescopic centering element, and the upper with its upper part. SU ,, „1234348 A1