Ones-way continuous towing mechanism

Abstract

The invention discloses a one-way continuous towing mechanism comprising an upper one-way clamping mechanism and a lower one-way clamping mechanism, wherein the upper one-way clamping mechanism is positioned above the lower one-way clamping mechanism; the outer side of the upper one-way clamping mechanism is connected with a reverse-direction reciprocating mechanism; the lower end of the reverse-direction reciprocating mechanism is connected with a driving device; and a towed piece penetrates through the driving device, the lower one-way clamping mechanism and the upper one-way clamping mechanism. The invention has little abrasion, safety in use and low cost, realizes the continuous movement under low speed and heavy load without limiting a working stroke, and simplifies a driving and controlling device, thereby reducing the occupying area and enhancing the reliability of a system; in addition, the invention is used for enabling a lineament with a certain rigidity to take one-way towing movement under low speed and heavy load.

Description

technical field [0001] The invention relates to a device for one-way traction movement of a linear body with certain rigidity under low speed and heavy load. Background technique [0002] The low-speed and heavy-duty linear body one-way motion mechanism in the prior art has no back-and-forth reciprocating structure, and can only complete a limited working stroke; or a stepping mechanism with intermittent motion is used, resulting in low efficiency; or multiple driving devices are installed to cause on-site installation Insufficient space and complex controls reduce reliability. [0003] Publication No. CN101230750 is the Chinese invention patent of "Central Type Self-Elevating Full Hydraulic Step Hoist and Method for Lifting Construction Platform", which is mainly used for lifting the construction platform. [0004] Its purpose is to realize a lifting device that is easy to operate, safe and reliable, and can not only realize load rise, but also realize load fall. [0005]...

AI Technical Summary

Problems solved by technology

The wedge surface structure larger than the self-locking angle, on the one hand, increases the size of the driving cylinder of the locking device or increases the oil pressure; on the other hand, because it cannot be self-locking, the force must be directly fed back to the driving cylinder of the locking device.

When the driving capacity is insufficient or the oil cylinder or oil circuit leaks or the pipe bursts, it is very easy to cause the danger of falling

[0013] 4. Since the lifting cylinder is a hollow cylinder structure, the required cylinder diameter is increased, resulting in an increase in the structural size and occupying a larger installation space; or by increasing the system pressure to reduce the required cylinder diameter, when the pipe bursts, it will be easier Hazard prone to personal injury

In addition, the hollow cylinder structure also makes it difficult to manufacture this part of the structure, increasing the cost

[0014] 5. Due to the limitation of the material length of the lifting rod of the lifted object, the lifting height is limited

Such as the small contact area of ​​the locking device, which squeezes the wire rope; the fatal problem that the friction coefficient between the wire rope and the claw is smaller than the friction coefficient between the outer cone surface and the inner cone surface; and the wire rope head should not pass through the lifting device, etc.

[0015] 6. Since the upper and lower locking devices are directly fixed in the lifting cylinder structure, it does not conform to the modern modular design method

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