SU64241A1 - Jack - Google Patents

Description

Jacks are already known, consisting of two telescopic tubes, relative to a chain that is moved in length by means of a chain, etc., of a flexible element.

The proposed jack, designed to install an axle link (string) on the jaw of a locomotive frame, has the peculiarity that a bailer for a hoisting rope is located inside the tubes. This design of the jack reduces its size and provides easy access to the jack & the places of its installation on the locomotive frame.

In FIG. 1 is a front view of an exemplary form of the jack, FIG. 2 - side of the jack of FIG. 1, fig. 3 is a cross section of a jack along A-A in FIG. 1, fig. 4 is a longitudinal section through a jack detail; FIG. 5 is a view of another part of the jack.

The inner tube 2 is inserted into the outer 1 with a small gap in order to allow the tube 2 to freely slide in and out without sticking. Axis 3 is at rest at one end. .B bearing 5, and the other in the bearing 6, made in conjunction with a ratchet sprocket 24.

The drum 4 is attached to the middle square part of the axis, to which the end of the lifting rope 14 is attached. The bearing 5 is welded to the outer one. The bearing 6 is mounted on a sleeve 7, coupled to the outer tube 1.

A hub 21 with a tube 8 welded to it, to which the axis 12 of the handle 22 of the jack 22 is welded, is put on the outer square end of the axis 3.

To raise the jack to the frame sheet of the locomotive frame, the outer tube 1 is equipped with a forked frame of two bent pipes 17 and 18, fitted at both upper ends with two pivot brackets 20. The brackets 20 rotate in a horizontal plane at a 90 ° angle when they are cut into the cut-outs of the frame sheet. A tray 19 for the string is superimposed on the end of the inner tube 2 of the jack.

Since it is necessary to be able to spatially move the last several when fitting and setting up the cords, tray 19 is attached to the end of the tube 2 with the aid of a pin 23, the diameter of which is significantly smaller than the internal diameter of tube 2.

In order to prevent the inner tube 2 from lowering by its own weight and the weight of the string laid on the tray 19, a ratchet mechanism is provided, consisting of a ratchet sprocket, a rod 9, a screw 10, a spring 13, a lever 11 and a bracket 25.

The position of the xpanoiBoro mechanism, izob, razhen “oe in FIG. 3, corresponds to the state of the rest of the string and, consequently, stopping the rotation of the handle 22. At the same time, the spring 13, loosening and resting on the rod 9, holds the screw 10 in the recess of the ratchet 31 starter.

But since the hrapa1 star 24 is integral with the fixed bearing 6, therefore, the drum 4 is stopped.

To raise or lower the inner tube 2, the worker must press the handle 22 along the axis. At the same time, the flange of the handle will be pressed into the lever 11. It rotates, draws the rod 9 with a bolt and the screw 10 leaves the recess of the ratchet sprocket. In this way, it is possible to rotate the handle 22, and with it the drum 4, on which the rope 14 will be wound or unwound from it.

The second end of the lifting rope 14 is attached, by the aid of the suspension 15, to the lower end of the inner tube 2. To stop into the ditch wall, the lower end of the tube 2 is provided with a bracket 16 on the side.

The use of a jack is as follows.

First, the bent brackets plant the vehicle between the ramp and the frame. Then the brackets are turned and the plant is t i; frame cut-outs so m

so that the jack remains hanging on the frame, resting on the wall of the ditch with the bracket 16. Thereafter, the string is put on tray 19 and lifted and set. To remove the jack from the frame, it is necessary to perform the same operations, but in reverse order, i.e. lower the inner tube 2, turn the brackets 90 °, and then bring the jack suspension down.

Lifting force of the jack is about 125-150 kg with the force on the handle 12-18 kg; dead weight is about 15-17 kg.

Subject invention

Claims (4)

1. A jack consisting of two telescopic tubes that are moved relative to each other by means of a rope, characterized in that the drum for the lifting rope is located inside the tubes. 2. The jacking form of claim 1, excluding the fact that the inner extension tube is equipped with lobes, diametrically disposed 10 | Listed slots for the axis of the rope drum. 3. A form for making a jack according to claim 1, characterized in that, in order to prevent the inner tube from lowering from its own weight, the axis of the drum is held by a ratchet mechanism driven by B1 action from the jack handle. 4. Leave on p. 1-3, about aphids and with the fact that the outer tube is equipped with a forked frame for hanging the jack on the frame “aipoB03a when installing the box strings. No. 64241 - 3 - FIG. one /P . .3 рЗ | I No. 64241 FIG. 2