SU69104A1 - Lifting device - Google Patents

Description

The proposed lifting device is intended primarily for assembly purposes and comprises a bridge being raised in the guide columns with screw jacks. To rotate the nuts of the screw jacks used mounted on the engine, interacting with them through gears. A distinctive feature of the invention is that in order to be able to lift the bridge to a greater height without increasing the length of the jacks screws, the nuts are mounted on cross-arms made adjustable along the columns, and the bridge is equipped with a device for fixing it at different levels for the time of shifting the cross-arms, Coupled with nuts, movably mounted along vertical spline rollers.

FIG. 1 shows a general view of a lifting device; FIG. 2 - ABCD section.

The proposed lifting device is mounted on trolleys of freight cars or platforms, which does not exclude the possibility of using

15 Code in. eight.

other carriages for the possibility of its movement.

The supporting structures are mounted on trolleys pivotally, so that the bridge can be rotated 90 ° around one of them, in order to transport the lifting device along a single railway track.

The lifting mechanism contains screws 7 jacks with nuts 2, rotatably mounted on the cross-arms 3, having sliding bolts 5. The latter can interact with any pair of holes b, arranged in pairs in the columns, and fix the position of the mobile cross-arms. At the ends of the bridge 5, the crossheads 77 (Fig. 2) are reinforced, having also retractable bolts 9, which allow the bridge to freely lift up and are pressed by the springs 4 when the bridge is lowered downwards, interact with any pair of holes 6 above in the columns 7. The load is illuminated to the hook 75 the carriage Yu moving along the bridge 8. Lifting bridge 8 is carried out with

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COMPLETE engines 77 located on it, which, through T6 gearboxes, drive two pairs of bevel gears 15 and vertical spline rollers 74 with gear wheels 7J longitudinally movable on them and transmit rotation gear m 72, screwed together with nuts 2 screws 7. Engines 77 work synchronously. The rise of the bridge S can also be carried out manually (in case of a lack of electricity).

When the nuts 2 are rotated clockwise, the screws 7 lift up and pull the bridge 8 behind them. After using the lengths of the screws and raising the bridge so that the bolts 9 fit into one of the subsequent holes 6, the nuts 2 rotate in the opposite direction, thanks to which the traverse J rises and takes a subsequent position.

In the new upper position of the traverse J, it is fixed again with the help of sliding bolts 5, after which the next cycle of lifting the bridge is repeated. By such steps, the bridge rises to the required height.

The process of crossing the bridge S is similar to lifting, only all operations are performed in reverse order.

Lifting and lowering loads weighing up to JO t can be carried out with a fixed bridge c. The hook 7S with the load is raised by a hoisting system 79 on the pulley system, which is attached to the drum 20 of the winch 27. An additional cable 22 is provided to hold the carriage on the pavement and to move it, which bends around the discharge blocks 23, 24 and is dressed on the drum 25 Winches 27. Drums 20 and 23 mounted on a single shaft. The winch design provides for the possibility of joint and separate operation of the drums. When lifting, the drum 20 operates, and the drum 25 is stationary. During carriage movement, both drums work, with one rotating clockwise, the second counter-clockwise, for example; if the cargo drum bzdet rotate counterclockwise (according to the drawing), and the cargo cable W will

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wind up, then the 25 bz / money reel rotates clockwise and the 22 C cable; With this rotation, the carriage will move to the left. During reverse rotation, the carriage moves to the right.

Winch 27 is driven by engine 26 through gearbox 27; in addition, the design provides for the possibility of manual rotation.

The height of the columns 7 of the lifting device is taken in accordance with the railway gauge. When lifting loads to a greater height, additional columns are used, which can be extended to the main columns 7.

Cats 29 are provided to guide the ends of the bridge 8 through the columns 7.

In order to create stability of the elevator at high columns, the latter can be fastened with the help of special extensions (not shown in the drawing).

Subject invention

Claims (3)

I. Lifting equipment for assembly purposes, comprising a bridge, raised in the guide columns with screw jacks, for rotating the nuts of which motors installed on the bridge and interacting with them through gears are used, characterized in that the bridge to a greater height without increasing the length of the screws of the dolly nuts; the nuts are mounted on traverses made permutable along the columns; the bridge is equipped with a device for fixing it on different pipes for the duration of traversing stops, and gears coupled to the gears of the nuts are mounted on the traverses movably along the vertical driving slit rollers. 2. The form of the device according to claim J, characterized in that the traverses are equipped with extendable bolts interacting with any pair of holes, in pairs 3-n. 69104 installed at different levels of the bridge at different levels of the directors of each column. as mounted on a bridge 3. The form of execution of the device of the sliding bolts, in conjunction with paragraph 1, characterized in that, with any number of holes in which is a fixture for securing the guides of each column. c ±: ir-zf r: T;: | cS iy ;: (f g--: ---: s-- -% -4-r - - r -r.-a i 7 -: - s 2 - g :: - - ..,.  -f - -yS ./y ,; and I 15 227 FIG. 2