Manual trackers are generally screwdrivers with simple structures, but they are compact and slow and are mainly used on cranes for small, medium-sized or temporary applications with small wind cover。
Structure:
The manual tracker is a combination of hand wheel and silk rods that combine components such as special nut clamp。
Rationale:
When the hand wheel rotates, the lead wheel turns, leads to the operation of the chain through a special nut and continues to go down, forces the lower side of the clamp to move to both sides of the orbit for wind-proof purposes. When the wheel rotates backwards, the clamp is first released, and the wheel continues to rotate, the connector is lifted until the unit on the special nut touches the trip limitr, which, because it is often open, is connected to the power, the large car is operated and, conversely, the power is cut and the large car is prohibited from running, thus the car is locked。
Characteristics:
Practical, easy to repair。
2. A hand-held tracker has a good tuning function, thus resolving the major difficulty of the market product being unable to function normally when it is on the wheel, and whether the wheel is on that side of the orbit, it can be calibrated to the orbit. This practical new type involves a new type of manual trackr, which has a screw at the lower end of the frame, which acts as a symmetrical pair of the left and the right plate on the left and the left in the orbit, and is then fixed on the upper end of the left and right sides, with a simple structure, small parts and easy to install; it is operated by rotating the screws to separate the right and the right and the orbits, and then by inserting the plug into the plugs, the process switches open to enable the crane to function properly, which needs to be plugged out, the process switch closed and the crane cannot be activated. The manual tracker therefore has characteristics such as simple structure, ease of use and strong self-locking capability, and is not subject to horizontal external load conditions。
