Drawer

Abstract

The invention relates to a drawing device which comprises a claw seat, at least two claw hooking arms, a claw opening sliding barrel and a pushing piece, each claw hooking arm is pivoted on the claw seat, the claw opening sliding barrel can elastically slide in the claw seat, at least one convex rafter which penetrates through the claw seat and is driven by the claw opening sliding barrel is formed at the end edge of each claw hooking arm, and the pushing piece is arranged on the claw seat. Each claw arm can rotate and swing between an opening position and a closing position relative to the clamping seat, so that the structure can be simplified, the operation is convenient, an annular component can be quickly detached from the device, the annular component can be stably hooked without any slippage, and the operation safety of the device is greatly improved.

Description

technical field [0001] The invention relates to the technical field of a pulling tool, in particular to a puller that can increase the working stroke, thereby simplifying the structure, having the effects of easy operation and quick disassembly, and improving the safety of operation . Background technique [0002] Various discs, bearings, gears, pulleys and other ring-shaped components are mainly fixed on an assembly shaft for interlocking movement. When the ring-shaped components need to be disassembled and replaced due to damage and other factors, currently they are mainly tied with pullers. Mainly, the existing puller is pivotally provided with a plurality of claws for hooking the ring-shaped member on the outer edge of a claw seat, and the center of the claw seat is provided with a push element that can selectively push the top of the assembly shaft (such as Screw or hydraulic cylinder), for pushing the assembly shaft by operating the push element, and using the aforeme...

AI Technical Summary

Problems solved by technology

Although such a design makes the claw no longer be restricted by the aforementioned stop ring, because the locking part of the adjustment mechanism needs to extend between the main body and the claw, the combination size of the locking part and the receiving part is insufficient, which makes the structure The strength becomes poor, and it cannot withstand the pulling force when pulling the ring-shaped member, and even slipping occurs. If you want to increase its strength, you need to increase the size of each component, making the entire puller cumbersome, and it is not easy to In addition, due to the limitation of the alignment and combination of the locking part of the adjustment mechanism and the locking part of the claw part, it is necessary to improve the machining accuracy of each part, otherwise the contact point between the hook part of the claw part and the ring-shaped member may be misaligned. Slanted, so that the screw parts cannot act in a straight line on the axis of the assembly shaft, which not only causes the problem of dispersion of driving force, but also may cause the hook part of the clip part to slip off from the ring-shaped member during operation, which seriously affects the use. safety

[0005] Due to the imperfect structural design of the existing puller, there are problems in its structure and use, such as complicated structure, inability to disassemble and replace the claws, easy slippage of the claws, and insufficient working stroke. How to develop a puller A kind of innovative structure that can be more ideal and practicable, the goal and the direction of the breakthrough that need to be considered by the relevant industries are also what the present invention intends to discuss

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