Handheld variable-frequency pneumatic pin pulling device

Abstract

The invention relates to the field of engine maintenance devices, and particularly discloses a handheld variable-frequency pneumatic pin pulling device. The device comprises a main shell and a pullinghead outer shell, wherein the pulling head outer shell is in threaded connection with the front end of the main shell, a pulling hammer is arranged inside the main shell, the pulling hammer is movably connected with the main shell, one end of the pulling hammer extends into the pulling head outer shell, a sleeve connected with the pulling hammer is arranged inside the pulling head outer shell, one end of the sleeve is in threaded connection with a pulling head, and the head end of the pulling head is movably connected with the pulling head outer shell and extends to the outside of the pullinghead outer shell; a spring A is arranged between the sleeve and the main shell, a spring B is arranged between the tail end of the pulling hammer and the main shell, an air inlet port is arranged inthe tail of the main shell, and the air inlet port is connected with a pneumatic mechanism through a guide pipe. The handheld variable-frequency pneumatic pin pulling device has the advantages that asingle chip microcomputer and a pressure regulating valve are used for outputting the compressed gas with adjustable frequency and pressure, the effective control of frequency, stroke and force in thepin pulling process is realized, and therefore the decomposition efficiency and quality of pins and workpieces are improved.

Description

technical field [0001] The invention relates to the field of engine maintenance devices, in particular to a hand-held frequency conversion pneumatic pin pulling device. Background technique [0002] Since most of the current pneumatic pin pullers are only a simple manual prying tool and puller, as the Chinese patent No. CN208358690U discloses a pneumatic pin puller mechanism, it is proposed to push the impact hammer through the air flow to push the pin The mechanism for pulling out; the patent number is: CN202010991 Chinese patent discloses a pneumatic pin puller, which provides a fixed station through the handle to control the air inlet of the device, so as to realize the mechanism of manually controlling the impact hammer to pull out the pin, etc. , the above-mentioned patent is only through the airflow driving mechanism to realize the process of pulling out the pins. In addition, due to the fact that some thin-walled parts need to be involved in the actual application pr...

AI Technical Summary

Problems solved by technology

This type of pneumatic puller only completes a pin-out process, and cannot control the pin-out frequency, pin-out force, and pin-out stroke, and is large in size and inconvenient to operate, so it cannot meet the needs of aero-engine maintenance

[0003] At present, the pin removal work in the engine repair process mainly uses special prying tools and pulling tools for master workers. The strength of these devices is uncontrollable, and it is easy to cause damage to engine parts during use, and these damages are not allowed

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