A universal lifting device

Abstract

The invention relates to the field of dialing, and discloses a universal dialing device, which comprises a support frame, a handle, a sliding part and two springs. A handle is slidably installed inside the support frame, and the handle slides along the vertical direction of the support frame inside the support frame; the sliding part includes a dial hook; a sliding part is fixedly installed between the support frame and the handle for controlling the dial The hook moves in the horizontal direction; the dial hook is installed on the handle, and the vertical movement is realized through the handle; 2 pieces of springs are fixedly installed between the handle and the support frame; the support frame is equipped with a central symmetrical ruler. The invention provides a universal lifting device, which adopts double pull hooks, which is convenient to replace; the distance between the double pull hooks can be adjusted through sliding parts; the centrally symmetrical scale is adopted, and the distance between the double pull hooks can be quickly calculated by multiplying the readings by 2; The liner made of polytetrafluoroethylene is arranged between the sliding parts to reduce the sliding friction and improve the service life of the lifting device.

Description

technical field [0001] The invention relates to the field of lifting tools, in particular to a universal lifting device whose spacing between double pulling hooks can be adjusted symmetrically and whose pulling force is perpendicular to the chassis. Background technique [0002] At present, in the field of electronic equipment, modules and printed circuit boards are widely used. The spacing of the lifting holes is not uniform, and the depth of loading in the chassis is also different. Debugging or repairing often requires disassembly. There are currently several forms of special lifting devices used for disassembly. The first type is a single pulling hook lifting device, which pulls the left and right lifting holes back and forth when pulling out. It is only suitable for modules and printed circuits with low assembly accuracy. plate. The second type is a double-hook fixed-pitch lifting device, which is dedicated to modules and printed circuit boards of a certain size. The ...

AI Technical Summary

Problems solved by technology

The third type is the lifting device with asymmetrical adjustment of the distance between the double pulling hooks. Since the position adjustment of the left and right pulling hooks is relatively independent, its symmetrical center can easily deviate from the symmetrical center of the lifting device, and it is easy to generate a deflection moment when lifting. Possible damage to modules, printed circuit boards

The asymmetrical adjustment of the distance between the double puller hooks. When the puller moves the puller horizontally, metal contact is usually used to slide. The sliding effect is poor and the wear is serious, which affects the life of the puller.

[0003] In addition, the conventional lifting device only relies on the expansion and contraction of the spring to adjust the extraction depth. If the extraction depth of different modules and printed circuit boards varies greatly, when the expansion and contraction of the spring is exceeded, it is inconvenient or impossible to replace the extraction hook.

Images