Overhead-line-type carrier

Abstract

The invention provides a monohull overhead-line-type carrier, wherein the overhead-line-type carrier can be used in logging of either a lifted load or a suspended load on a gently sloping surface or asteeply sloping surface. The overhead-line-type carrier according to the present invention is provided with: a base member (1); a main cord braking member (10) having a braking surface that comes into contact with a main cord, the main cord braking member being secured to the base member; a first lever (20) having a first pivot point that serves as a center of rotation and is secured to the basemember, a first lever braking surface provided at a position facing the braking surface, an urging member that urges the first lever braking surface in a direction away from the braking surface, and adriving pulley with which it is possible to apply a force in a direction approaching the braking surface to the first lever braking surface via tension of a running rope; and a second lever (30) having a second pivot point that serves as a center of rotation and is secured to the base member, and a first lever pressing part with which it is possible to press the first lever braking surface in a direction away from the braking surface with respect to the first lever.

Description

technical field [0001] The invention relates to a wire carrier. Background technique [0002] Wire carriers are used to collect felled logs. In the wire type carrier, there are a type (Patent Document 1) for conveying by aerial suspension and a type (Patent Document 2) for conveying by ground traction. Among the types that are transported by traction on the ground, a so-called single-body type wire carrier that moves the carrier by a single winch has the following problems. [0003] For example, when lifting loads, there is a problem that the wire carrier moves in the pulling direction of the moving rope before the end of the log is lifted. Therefore, if the wire carrier moves in the direction of traction, it is difficult to apply force in the direction to make the end part float, especially if there is an obstacle such as a rock or a tree stump, it will be impossible to cross the obstacle and cannot The problem of making the wood move. If the cable is forcibly pulled by...

AI Technical Summary

Problems solved by technology

[0003] For example, there is a problem when raising loads: before the end of the log is lifted, the wire carrier moves in the direction of the pull of the moving rope

Therefore, if the wire carrier moves in the direction of traction, it is difficult to apply force in the direction to make the end float, especially if there is an obstacle such as a rock or a tree stump, it will be impossible to cross the obstacle and cannot the problem of making wood move

If the rope is forcibly pulled with a winch in such a state, the tension will increase, so when the wood crosses the obstacle, it will fly out of the obstacle rapidly, and there is a very dangerous problem.

[0004] On the other hand, there are also the following problems when lowering goods: the wire itself is inclined downward, so due to the weight of the wire carrier itself or the pull of the winch, it is very dangerous for the carrier to slide down quickly, and the ends of the wood cannot lift up

For these reasons, conventional single-type wire carriers were not suitable for lowering loads

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