Portable pneumatic puller

Abstract

The invention discloses a portable pneumatic puller. The portable pneumatic puller comprises a pulling head, a housing, a gas source, a spring I, a connecting sleeve, a pulling shaft, a main body, a pneumatic hammer, a pressure regulating valve, springs II, a switch lever and a sleeve, wherein the springs II are arranged in the switch lever and the sleeve, the housing is connected with the connecting sleeve, the air source is connected with one end of the sleeve through the pressure regulating valve, the other end of the sleeve communicates with a gas inlet hole of the main body, the gas inlethole of the main body communicates with the pneumatic hammer, the pneumatic hammer is in sliding fit with an inner cavity of the main body, an gas hole of the pneumatic hammer communicates with the inner cavity of the main body, the inner cavity of the main body is embedded in the connecting sleeve, the connecting sleeve is in clearance fit with the pulling shaft, the pulling shaft is connected with the pulling head through threads, and the spring I is installed at the front end of the pulling shaft. The portable pneumatic puller has the beneficial effects that the back pulling stroke and theback pulling force are controlled, so that the working efficiency is improved, the working intensity is reduced, and the automatic pin pulling of the pulling head is achieved.

Description

technical field [0001] The invention relates to the field of aero-engine maintenance, in particular to a portable pneumatic puller. Background technique [0002] A modern aero-engine is a complex mechanical system. It is the heart of the entire aircraft. Once something goes wrong, it will affect the safety of the entire aircraft. In order to reduce the failure rate of the aero-engine, the engine needs to be regularly repaired and maintained at a dedicated maintenance center on the ground. Since most of the current pneumatic pin pullers are only a simple manual pry and puller, such as: a utility model of a pneumatic pin puller (CN208358690U) proposes a mechanism that pushes the impact hammer through the airflow to pull out the pin; The utility model pneumatic pin puller (CN202010991) 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. The withdrawal p...

AI Technical Summary

Problems solved by technology

Since most of the current pneumatic pin pullers are only a simple manual pry and puller, such as: a utility model of a pneumatic pin puller (CN208358690U) proposes a mechanism that pushes the impact hammer through the airflow to pull out the pin; The utility model pneumatic pin puller (CN202010991) 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. Cancellation process

In addition, because some thin-walled parts need to be involved in the actual application process, such as the disassembly of aero-engine parts, this type of pneumatic puller only completes a pin-pulling process, and cannot control the pin-pulling force and pin-pulling stroke. And the volume is large, it is inconvenient to operate, so it cannot meet the maintenance needs of aero-engines

[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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