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实用新型
CN202779167U 一种液压胀形轧辊 失效 - 放弃

一种液压胀形轧辊
摘要：
本实用新型公开了一种液压胀形轧辊，包括设置在液压胀形轧辊端部的防回流高压旋转接头(46)，防回流高压旋转接头(46)包括接头壳体(2)，接头壳体(2)的一端能转动地设置在接头芯轴(9)上，接头壳体(2)的另一端设置有进油口(21)，接头壳体(2)的另一端还固定连接有能封闭进油口(21)的逆止阀，接头壳体(2)与液压胀形轧辊固定连接，进油口(21)能够通过逆止阀与液压胀形轧辊的轧辊油道(22)连通。该液压胀形轧辊能够在液压系统停止向高压油腔中供油后使高压油腔内缓慢泄压，延长了轧辊芯轴和轧辊辊套的使用寿命。
摘要（英）：

The utility model discloses a hydraulic bulging roller which comprises an anti-backflow high-pressure rotary joint (46) arranged at the end of the hydraulic bulging roller. The anti-backflow high-pressure rotary joint (46) comprises a joint case (2), one end of the joint case (2) can be rotatably arranged on a joint mandrel (9), the other end of the joint case (2) is provided with an oil inlet (21) and fixedly connected with a check valve capable of closing the oil inlet (21), the joint case (2) is fixedly connected with the hydraulic bulging roller, and the oil inlet (21) can be communicated with a roller oil duct (22) of the hydraulic bulging roller through the check valve. The hydraulic bulging roller can enable a high pressure oil chamber to relieve pressure slowly after a hydraulic system stops supplying oil for the high pressure oil chamber, and service lives of the roller mandrel and a roller sleeve are prolonged.

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