S-valve drive plays a key role in the pumping unit of the concrete pump. The most important elements in the drive of the S-valve are:
Levers of the S-valve;
The most common option in the concrete pumps is the system working with two hydraulic cylinders joint to the lever which is driving the S-valve. The S-valve hydraulic cylinders are connected to the lever by means of pins or spherical sockets. Such solutions can be found in machines with “S” type valve: PUTZMEISTER, EVERDIGM, JUNJIN, CIFA, SERMAC, TEKA, Waitzinger, REICH or COIME. The shifting unit for the S-valve with one hydraulic cylinder is mounted in concrete pumps with “ROCK” valves – Schwing and older models of REICH pumps.
Hydraulic cylinders by continuous alternating motion are tilting the S-valve, whereby the concrete can be pumped from the working cylinder via a the S-valve to the pump-pipeline and suction of concrete from the hopper to the working cylinders is possible
Hydraulic cylinders for S-valve shifting provide the function of S-valve movement during the process of pumping. The rotational movement of the S-valve is executed by the swing lever assembled on […]
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