CS230486B1 - The way of moving the transport trolley with the use of positional energy sinned - Google Patents

Abstract

The invention relates to a method of driving a transport trolley using the positional energy of the load being transported over a short distance. The transported load is lifted above the level of the load of the transport trolley, and is lowered onto the piston of a lower accumulator located under the loading platform of the trolley and connected to a hydraulic circuit, which sets the trolley in motion.

Description

BACKGROUND OF THE INVENTION The present invention relates to a method of driving a transport trolley using the position energy of a load that is transported over a short distance.

Currently, heavy-duty, trolley and combustion engine trucks are used to carry heavy loads. The battery cart has the disadvantages of low battery life, depending on the battery temperature, ambient downtime during battery charging. When towed in wet and aggressive environments, there is a risk of insulation breakage and can only be used for very short travels. In a trolley with an internal combustion engine, it is not enough to warm up the engine to operating temperature during intermittent short-distance operation and it is also necessary to use a starter source

The above-mentioned drawbacks are eliminated by the method of propulsion of the transport trolley using positioning energy, the load according to the invention, where the transported load is lifted above the platform of the transport trolley, lowered onto the piston of the weight accumulator located under the platform set it in motion.

The main advantage of the transport trolley according to the invention is the solution of the trolley travel without consumption of electric energy, fuel etc. The mentioned solution utilizes positional energy of the transported loads for the trolley transport and it is advantageous especially where it is necessary for lifting or technological reasons transport trolley.

230 48fi

Fig. 1 shows a trolley with weight accumulators and a hydraulic circuit. FIG. 2 shows a circuit of a hydraulic circuit with a weight accumulator connection.

Below the loading platform of the transport trolley are two weighing accumulators AI, which are connected to the hydraulic circuit HO. The hydraulic circuit HO is located on the trolley as well as the Al weight accumulators. By placing a load 5 on the piston rods of the weighing accumulators A1, the working fluid pressure p1 is applied, which is fed via the first manual slide valve S1 and the second manual valve slide SR2 to the hydraulic motor HR, which moves the transport carriage. The SR2 handwheel adjusts the two operating modes of the HR hydraulic motor, forward and reverse. In this part of the circuit there is a built-in safety valve T1, a drain valve VI and a first non-return valve Z1 which, after carrying out the duty cycle, i.e. placing the load on the weighing accumulators A1 and moving the carriage, will be sucked. This basic part of the hydraulic circuit 11 is supplemented by circuits which enable the travel path or the truck to be extended without a load. A part of these circuits is also the accumulator A2. If the pressure in this accumulator drops, the pressure switch TS gives an impulse to replenish it. This is ensured by the hydrogen generator HG, to which the electric motor M is connected. After the accumulator A2 has been filled, its pressure energy can be utilized via the first valve V2 and the pressure reducing valve RVI. After the first hand valve SRI has been adjusted, the HR hydraulic motor is activated. The second valve V3 serves to release the fluid pressure from the accumulator A2. The third V4 valve is used to change the oil charge. The safety valves TV1, TV2 and TV 3 protect the circuits against high pressure damage. The second check valve Z2 prevents leakage of the working fluid pi through the hydraulic motor HG into the working fluid tank. The truck according to the invention can be used in all operations where heavy loads are transported, which for technological or other reasons need to be lifted above the platform level. The trolley of this construction is suitable for shuttle transport of loads.

Claims (1)

OBJECT OF YOU FIND 230 486 A method of driving a transport trolley using the position energy of a load, characterized in that the load to be lifted above the platform of the trolley is lowered onto a weight accumulator piston located below the trolley and connected to a hydraulic circuit by which the trolley is moved.