Light aluminum alloy cable chain tightener

Abstract

The invention relates to a light-small type hand hoisting traction machine, and the body of the machine comprises an external wall panel, a frame, a ratchet casing and a leading chain block, wherein the external wall panel and the ratchet casing are arranged on two sides of the frame separately, the leading chain block is arranged at the bottom of the frame, a driving mechanism is a double-geared driving mechanism, wherein a spline gear is arranged on the right side of a hoisting chain wheel, a major axis gear passes a center hole of the hoisting chain wheel and gear side of the major axis gear is rightward, a middle gear is arranged in a hole on the right side of the frame and engaged with the major axis gear and the spline gear, a brake of a dragging chain is arranged on the left side of the major axis gear via a spline, wherein friction disks and a ratchet are sleeved on the brake seat, two friction disks are arranged on two sides of the ratchet, a clutch spring is arranged between the brake seat and arresting nut, the ratchet is engaged with a pawl which is fixed on the frame via a pawl pin, in a operating mechanism, a handle and a wrench are in split clamping structure, in a tail ring limiting device, a chain through hole is arranged in the center of a positioning block, wherein a top lock is arranged at the end portion of one side of the block body, the top lock can be crewed into or crewed out from the chain through hole, and a latch groove of a collar bolt at the end of the chain is arranged at the lower end of the end portion of one side of the block body.

Description

technical field [0001] The invention relates to a light and small manual hoisting traction machine, which is mainly used for hoisting, traction and tensioning operations, and belongs to the field of ring chain tensioner manufacturing. Background technique [0002] Publication number CN1740082A, name "portable aluminum alloy lever hoist", this lever block includes a matching main body mechanism, a ratchet wrench mechanism and a driven sprocket mechanism; 19) The lower main body cover (35), the upper hook (1) is connected to the upper part of the main body shell (19); the main body shell (19) has a built-in anti-reverse gear transmission and a sprocket transmission, and the two hooks The opening part of the opening is equipped with a cable plate assembly to prevent the chain from falling out; the ratchet handle assembly (9) in the ratchet wrench mechanism is matched with the gear shaft (17). The gear transmission device is composed of a gear shaft (1), a round washer (22) and...

AI Technical Summary

Problems solved by technology

Its shortcomings: First, the body adopts an open type, and the entire brake is exposed, which not only has poor waterproof and dustproof performance, but also may cause a safety accident of brake failure once the pawl is touched during operation; Small, so that the product has a large number of lifting chain lines, prone to chain entanglement and chain flipping; third, the drag chain mechanism adopts the method of loosening the pawl and the ratchet wheel, and the operation of this method must be pressed firmly with one hand The ratchet makes the ratchet and the ratchet disengage, and the other hand can pull the chain, which is inconvenient to operate, especially when working at heights, it is not only inconvenient, but also has a high risk factor; the fourth is that the wrench on the operating mechanism is integrated with the mechanism. The long wrench makes it very inconvenient to carry the product, especially when working at heights and climbing; the fifth is that the upper hook in the hanging device is connected with the body by a nut and fixed with a round pin. It is convenient for maintenance, but the lower hook and the hook frame are fixed by nut welding, which cannot be disassembled, and the maintainability is poor; Sixth, the tail ring restriction device is fixed at the tail end of the loose end chain, and the work of the tail ring restriction device cannot be adjusted according to the position of the heavy object position, when the loose end of the chain is long, if the heavy object falls due to brake failure, the tail ring restricting device will violently hit the body, resulting in damage to the parts; Seventh, the chain guide is made of aluminum alloy material, when empty When the chain is dragged, the chain and the chain guide will produce impact noise, which not only affects the operation, but also pollutes the environment

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