Development of yarder with a new interlocking equipment of DRK

将滑差离合器应用于纱线机的联锁，由于缺乏简单、廉价、实用的联锁机，日本的联锁技术落后于国外，其根本问题是如何根据两卷筒的旋转方向简化联锁装置的更换。针对它的要求，我们研制了一种DRK(Differentialreibungskupplung)纱机，它具有简单、自动的换挡装置，其最新构思的适用原理只是基于小型机械机构，而不是传统的国外昂贵的空气换档缸。此外，该机还引入了静压传动，以减轻操作员驾驶的麻烦。a.工厂基本试验的结果：a.原换挡装置的基本功能始终得到完全保证。因此，当作业线之间必须保持一定的张力而与转鼓的方向无关时，该装置似乎将广泛应用于其他目的。B.DRK控制的稳定性依赖于DRK的内部结构，当它由四个独立的衬垫构成的裸盘式结构时，可以足够连续。b.在测井作业中的现场试验结果：a.由DRK组成的DRK设备和换挡装置的效果显著。B.与其他机型相比，该机型的运行效率足够高。C.尽管DRK连续使用，但在运行过程中产生的摩擦热并不像需要强制冷却那样多。操作员的麻烦和身体负担果然减轻了。

Applying the slip-clutch apparatus to the yarder for the purpose of the inter-lock, whose techniques in japan have been behind the foreign countries because of lack in the simple, cheap and capable yarder of interlock, the essential problem is how to simplify the change of the interlocking gear according to the rotative direction of the two drums. In response to its expectation we developed a yarder of DRK (Differentialreibungskupplung) with a simple and automatically functional apparatus for its gear change, whose recently conceived suitable principle is merely based on the small scaled mechanical mechanism, unlike the conventional foreign expensive air-shift-cylinder. In addition a hydrostatic transmission was also introduced in this yarder to ease the trouble of the operator in driving.A. The results of the basic tests in the factory: a. The fundamental function of the original apparatus for gear-change was always perfectly assured. Therefore it seems that this apparatus will be applied to the other purposes widely when the operating lines must be kept each other in a certain tension independent on the directions of the rotating drums. b. The stability of DRK-control depended on the inside structure of DRK and could continue enough when it was made of structure in exposed disc type with four separate pads.B. The results of the field tests in logging operation: a. The effect of the DRK-equipmeat composed of DRK and the apparatus for gear-change was remarkable. b. The operational efficiency by the yarder was higher enough comparing with that by the other ones. c. The frictional heat generated in DRK during operation was not so much as any forced cooling was besides required, in spite of its continuous use. d. The trouble and the physical burden of the operator were really lightened as expected.