A self-tensioning dragging device

Abstract

The invention provides a self-tensioning dragging device comprising a drive mechanism, a self-tensioning balance mechanism and a traction executing mechanism. The drive mechanism comprises a motor, a speed reducer and a dragging mechanism. The self-tensioning balance mechanism comprises a balance shaft with balance guide wheels, a first tensioning guide wheel and a second tensioning wheel, wherein the balance shaft can make linear motion in a linear track between the first tensioning guide wheel and the second tensioning guide wheel. The traction executing mechanism has a bearing connector. A steel wire rope from the dragging mechanism rounds the first tensioning guide wheel and a corresponding balance guide wheel on the balance shaft and enters the traction executing mechanism, and a steel wire rope from the traction executing mechanism is wound to the dragging mechanism after passing the second tensioning wheel and a corresponding balance guide wheel on the balance shaft, so that a closed loop of steel wire ropes; the steel wire rope from the dragging mechanism and the steel wire rope from the traction executing mechanism are wound around the opposite outer peripheral sides of the corresponding balance guide wheels.

Description

technical field [0001] The present invention relates to a self-tensioning traction device for mechanical transmission, and mainly relates to a self-tensioning traction device for outputting large traction force or push-pull force to the outside. , lifting platforms, elevators, etc.), and horizontal traction (such as winches for heavy vehicles), a considerable number of occasions where hydraulic cylinders are used can be used instead of hydraulic cylinders in a reasonable form. Background technique [0002] For the realization of vertical or horizontal traction function, there are relatively mature technical solutions now, and the non-mechanical realization form is the hydraulic cylinder and the auxiliary hydraulic system. The driving structure of mechanical vertical lifting is mainly divided into two categories: one is forced lifting, mainly in the form of drum wire rope, that is, hoist, which is mostly used in mining machinery, hoisting machinery, cranes, etc. The other is...

AI Technical Summary

Problems solved by technology

[0024] 1. The most common existing push-pull device, hydraulic cylinder system, although the technology is mature and widely used, but it needs to be supplemented with complex and huge hydraulic system, pump station fuel tank, complicated pipelines, etc., plus stroke constraints, and daily A large number of factors such as maintenance and repair of the hydraulic system limit the application of the hydraulic cylinder in many occasions; it also leads to a high cost

In terms of function, the hydraulic cylinder cannot realize the two-way equal thrust function

[0025] 2. The existing hoist form cannot be used in precision transmission due to its inherent side shifting problems, slight changes in upward speed and wear problems.

[0026] 3. The lifting method in the form of an elevator, in order to ensure the traction force and save energy consumption, a counterweight must be added, and the counterweight must be used in the vertical space, so this transmission form cannot achieve traction in a non-vertical direction

[0031] Therefore, the problems existing in the prior art are: in the existing traction device, the required deceleration equipment has a complex structure, takes up a large space, and has a large energy loss, thus causing a large amount of labor, cost, and energy consumption

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