SU901102A1 - Body lifting angle limiting cock dump truck - Google Patents

Description

I

The invention relates to hydraulic systems for dumping vehicles and can be used, for example, in automobile and transport trailers, as well as in hydraulic steering systems.

The closest technical. The solution proposed is a crane for limiting the lifting angle of the body of a tipper vehicle, comprising a housing with two fittings for supplying and discharging the working medium in which the stem with sealing rings and the spring-loaded ball valve 3 are placed.

However, the known device cannot be used on two-unit vehicles. Installing two cranes in the hydraulic systems of two-unit transport means complicates the hydraulic system and reduces its reliability in operation.

The purpose of the invention is the expansion of the functional features of the crane

by allowing it to be used on a twin-axle tipper vehicle.

The goal is achieved by the fact that the crane is equipped with an additional spring-loaded ball valve, the third EEtuter is mounted on the body to supply the working medium to the second link of the vehicle, and the rod is equipped with a return dinner and its turn are made and an axial slot and longitudinal groove are made placing in them the specified additional valve, made with the possibility of blocking the openings of both fittings for supplying the working medium, and in the middle part of the rod there are three flats with radial and holes, two of which are parallel

2Q to each other, and a third perpendicular to the last.

Claims (1)

In order to protect the stem from jamming, the valve is equipped with 3 LOIs placed in the longitudinal groove of the plastid stem: installed between the ball and the spring of the additional valve. FIG. 1 shows a crane, general view; FIG. 2 is the same longitudinal section; in fig. 3, the same side view (the position of the gatok and the handle when unloading the vehicle). The crane consists of a housing 1 (FIG. 2 in which a movable rod 2 is installed with sealing rings 3 and 4 and a spring 5, the rod is made with onopiibiM in accordance with 6, interacting with a ball valve 7, for communicating cavities A and B with struts 8- 10 (FIG. 3), on the rod in its middle part there are three flats and three holes on them 14-16. The presence of flats 12 also ensures the operation of the ball valve 7, To unload the trailer or switch the liquid to the next vehicle, the crane is equipped with a second ball valve valve 17 (FIG. 3), plate 18, placed in the longitudinal groove of the rod, and the spring 19 ;, located in the radial groove of the rod. The plate 18 prevents the rod from jamming when it is moved in the axial direction and when it is switched using the handle 20 (Fig. 3) from position 1 to position II. (fluid supply to the next vehicle) and vice versa. The free end of the rod 2 interacts with a rotary lever 21, hinged on the vehicle and connected via a flexible link 22 with the body 23 of the vehicle. The crane works as follows. When the handle 20 is in position I and is fed into the nozzle 8, it passes through the cavities. A, B and the orifices enter through the iUTyt 10 into the hydraulic cylinder of the vehicle, which raises the body 2 for unloading. Lifting body 2 through flexible coupling 22 turns lever 21, which presses against the end surface of rod 2 moving in axial pressure, the passage opening of fitting 9 remains blocked by a valve with valve plate 7 that slides along the plate 8 during movement of the rod. It remains in place and fixes the rod 2 (position 1 of the handle) in the working position. By losing the support surface at the speed of the valve 2, the ball valve 7 closes the channel for the supply of liquid. When lowering the lattice, the liquid from the hydrocyliidra freely passes through the slots in the tucker 8 to drain into the hydraulic system. When stem 2 is turned (handle 20B is in position P) of the chart-valve, valve 17 opens the through hole, tucker 9 and overlaps the through hole of choke 0, Thus, the supply of hydraulic flow to the hydraulic salve on this vehicle and connection e to the subsequent transport the means, the proposed device allows to obtain a technical and economic effect due to the greater reliability of the hydraulic system of the vehicle in comparison with the known, all other conditions being equal. In addition, this crane makes it possible to simplify the hydraulic circuit of a vehicle: instead of two cranoses, use one, which leads to a reduction in metal consumption and labor input during manufacture, claims 1. The crane limits the lifting angle of a dump truck vehicle with two fittings for supplying and removal of the working medium, in which the stem with seals; 1; 1 and rings and a spring-loaded ball valve are placed, in order to expand the functionality of the valve by means of Ensuring the possibility of using it on a two-link tipper vehicle, it is equipped with an additional spring-loaded valve on the body, the third fitting for the working medium and second vehicle is equipped, the rod is equipped with a return spring, a crank, a crank for its turning and 3 It has a radial socket and a longitudinal groove for accommodating the specified additional valve, which is designed to block the openings of both Etuier’s supply of the working medium in the middle part of the stem and in the polar three .pigs with radial holes, the bottom of which is parallel to g) and one third, and a third perpendicular to the last, 1. The crane according to claim i, which is to prevent stem from jamming, it is equipped with a longitudinal 02 and amp; Gtastina stem memory installed between the ball and the spring of the additional valve. Sources of information taken into account in examination i, USSR Author's Certificate & 451554 cl. 60 P 1/16, 1972 prototype). From the pump H, the subsequent trailer K iudpoi4if / i (JHdptj