SU618339A1 - Track-mounted hydraulic jack - Google Patents

Description

one

The invention relates to lifting mechanisms, namely to traveling hydraulic jacks, used to raise the rail grating during railway travel.

A hydraulic hydraulic jack is known, which contains a movable rod fixed on the base plate with a longitudinal segment groove and mounted with the possibility of stirring on the rod a cylinder with a sleeve made with a transverse segment groove, a valve box with an oil tank inside which the plunger pumps are mounted. one.

Such a track hydraulic jack has a very limited scope, since by its design features it can only be used to lift a rail grille during track work, which, due to its seasonality, does not provide the ability to load the jack throughout the year.

The use of such a jack for lifting other goods both in rail transport and in other sectors of the national economy is almost impossible.

Reliable operation of such a jack depends largely on the leakage of oil from the tank along the plane of its connector with valve valve. The position on the jack of the oil tank, in which the plane of its connector with the valve box is below the level of oil poured into the tank, contributes to the formation of an oil leak from the jack through this connector in case of insufficient tightening of the tank mounting bolts to the valve box or if the seal fails. between them.

This position of the tank also significantly increases the overall height of the jack, makes it inconvenient to work, because when carrying a jack by the handle, the worker is forced to wear it in a bent arm.

The purpose of the invention is to enhance. jacking

For this, a panel is fixed to the top of the cylinder, inside which the valve box is placed, and the oil tank is placed under the panel so that its plane of the connector with the panel is above the oil level in the tank.

Claims (3)

FIG. 1 shows a track hydraulic jack, top view; in fig. 2 - section A-A of FIG. one; in fig. 3 - section BB, 2; .on FIG. 4 shows section B of FIG. 2. The traveling hydraulic jack contains, a fixed rod with a longitudinal segment groove 1, mounted on the base plate 2, a movable cylinder 3, in the lower part of which a sleeve 4 is fixed, made with a transverse segment notch to grip the lifted rail by the sole. Two booster segments 5 and 6 are attached to the bushing. Segment 5 serves as a jack lifting restrictor. A panel 7 is installed in the upper part of the cylinder, which is in the place of its attachment to the cylinder of the support pad of the jack. The valve box of the jack is located in the console part of this panel, to which is attached below, an oil tank 8 with two plunger pumps located in it. The tank is installed in such a way that the plane of its connector with the panel is above the oil level in the tank ... Plunger pumps consist of a roller 9 connected to the rocker 10, which draws two rollers 11, nz plungers 12 with springs 13 and glasses 14. Rollers of the rocker arms due to the presence of springs are constantly in. contact with the plunger heads. The oil intake device 15 consists of two fixed-on-the-panel pipes, which communicate the cavity to the suction pumps from the oil tank of the tank. At the outlet end of the roller 9, the handle 16 is fastened. In the valve box there are channels for the passage of fluid, two suction valves 17 and forcing 18 ball valves are installed in them. In Neu. dns safety valve} an 19, adjusted to the maximum loading capacity of the jack, and the drain valve 20. On the panel 7 is installed a stopper 21 dl. air release when filling the jack with oil. - The oil is poured through the hole that is closed with a stopper with a vent 22. The handle 23 serves to transport the jack. The jack works as follows. The lifting of the railroad track by the rail footplate is carried out with the help of an adapter, other loads are lifted on the supporting platform. The knob 16 is actuated by a pump. The plungers 12 alternately through the device 15 suck oil from bdKa, and then serves it with. using k.lapanov 17 and 18 into the cylinder 3. At the same time, the cylinder and the load are raised. The jack is lowered to its original position by means of the valve 20, while the oil flows into the tank. In the case of a jack lifting a load larger than its carrying capacity, the pressure in the cylinder will exceed the value of the limiting pressure to which the valve 19 is adjusted. The valve will open and the pressure will drop. Lifting the load more than the permissible load capacity of the jack becomes impossible. The proposed jack can be used not only for lifting the rail grille for seasonal work, but also for lifting various cargoes both on the railway transport and in other branches of the national economy, as well as loading it throughout the year. In addition, when using this jack, its carrying capacity will increase, since at its support site it will be possible to lift loads larger in size than on the cargo hub. However, the reliability of the jack will be increased by eliminating the possibility of oil leaks from the tank, as well as its height, which will make the jack more convenient to use. Claims: Track hydraulic jack comprising a stationary brush fixed on a base plate with a longitudinal Yım groove segment and a cylinder mounted with movement on a rod with a sleeve made with a transverse segment groove, a valve box with oil, inside of which plunger pumps are mounted, differing in that, in order to increase reliability, there is a cantilever panel mounted inside the top of the cylinder, inside which a valve box is placed, and an oil tank is placed under the panel so that bone its connector to the panel is above the level by weight. 1a in the tank. Sources of information taken into account in the examination: 1. USSR Copyright Certificate № 126246, cl. B 66 T 15/04, 27.t3..59. and LPfU y x hchchh: -:.