Piston for a hydraulic mechanism tensioning device, with a venting device
A technology of traction mechanism and tensioning device, which is applied to the transmission device, transmission device parts, mechanical equipment, etc., and can solve the problems of unreliable exhaust.
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[0011] figure 1 Shows a cross-section of a piston according to the invention, which is provided for use in a hydraulic traction mechanism tensioning device. The piston 1 has a cylinder-shaped housing 2 with a hollow chamber 3 for containing oil. The hollow chamber 3 is configured as a high-pressure chamber, and oil pressure is established in the high-pressure chamber. Since air has different compression characteristics from oil, it is desirable to derive the air contained in the hollow chamber. For this reason, a through hole is arranged in the top 11 of the housing 2 through which air can leak out of the hollow chamber 3 or high pressure chamber of the piston 1. The piston 1 is usually made of steel or aluminum and rests on a tension rail, which is mostly made of synthetic material or another lightweight material. During operation, the piston 1 presses the tension rail, so that in the contact area, due to the harder piston material, wear on the tension rail is caused. It i...
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