CN213317828U

CN213317828U - Floor face-raising drill protector for double-layer motor train unit

Info

Publication number: CN213317828U
Application number: CN202022083582.8U
Authority: CN
Inventors: 周晶辉; 李洪达; 侯思宇; 吕明
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-01
Anticipated expiration: 2030-09-22

Abstract

A double-deck EMUs floor face-raising bores protector, includes flexible pipe, the sleeve pipe of being connected with flexible pipe, flexible pipe is used for covering the drill bit, the sleeve pipe is equipped with the exhaust hole, the sleeve pipe is inside to be equipped with filter screen, air discharge fan, bearing bracket from the air inlet direction in proper order, the middle of filter screen and air discharge fan is equipped with the through-hole, the drill bit passes bearing bracket and bearing and is fixed in exhaust fan through-hole department after the middle through-hole of air discharge fan and filter screen, the drill bit drives the air discharge fan to rotate together while working, the utility model discloses a flexible pipe can cover the drill bit in order to avoid solid particle and dust to drift away, can reduce the; the filter screen filters out larger solid particles so as to avoid damaging the exhaust fan; the exhaust fan and the drill bit are matched for use and rotate together, dust is sucked actively, and the drill cuttings are prevented from falling onto hands to damage the skin. The utility model provides a raise face drilling technical problem, filled EMUs technical field blank, when having improved production efficiency, product quality, shortened production cycle.

Description

Floor face-raising drill protector for double-layer motor train unit

Technical Field

The utility model belongs to the technical field of rail vehicle makes, especially, relate to a floor drilling tool.

Background

At present, the stations of the Chinese double-layer motor train unit are already completed, face raising and drilling are not easy to operate on the double-layer high-speed rail middle-layer floor, operators drill holes upwards by arm force, and electric drills are easy to shake to influence the drilling quality. Cuttings fall freely and fall on hands, the skin of the hands is easy to be allergic, and the hands cannot be provided with gloves when an electric drill is used, which is a very contradiction problem in the industry. Meanwhile, during drilling, the drill bit is not stressed uniformly to shake, so that the hole is not round, the rivet column cannot be placed into the hole, secondary reaming is needed, and production efficiency and product quality are affected.

In order to solve the problem of the contradiction, the industry adopts a vehicle body floor pre-assembling method to solve the problem, the floor is pre-assembled in the total composition synthesis process, the rear measuring scale is used for drawing lines, holes are drilled from top to bottom, the floor is lifted and reversed after being drilled, falls into a tire position and is welded. The drilling is carried out from top to bottom, two times of vertical downward drilling operations are achieved through floor overturning, and face drilling is omitted. Not only ensures the product requirement, but also avoids the falling of the fiber to damage the skin.

The method can meet the requirements, ensure the quality and avoid the damage of cutting to the hand. However, an operator needs to do work twice, the floor needs to be turned over and matched by a crown block worker, and waiting time exists among welding personnel during preassembly, so that the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a double-deck EMUs floor is raised face and is bored protector can protect hand safety, retrieves the aluminium bits automatically, when improving production efficiency, product quality, shortens production cycle.

In order to realize the utility model discloses the purpose, the utility model provides a double-deck EMUs floor raises face and bores protector, its characterized in that: the dust collector comprises a telescopic pipe and a sleeve connected with the telescopic pipe, wherein the telescopic pipe is used for covering a drill bit, an exhaust hole is formed in the sleeve, a filter screen, an exhaust fan, a bearing and a bearing support are sequentially arranged in the sleeve from the direction of an air inlet, the filter screen is used for filtering large solid particles, through holes are formed in the filter screen and the exhaust fan, the drill bit penetrates through the bearing support and the bearing and is fixed at the through hole of the exhaust fan at the bottom after passing through the through holes in the middle of the exhaust fan and the filter screen, and the drill bit drives the exhaust fan to rotate.

Preferably, a secondary filter screen or a dust collecting belt is installed at the exhaust hole on the sleeve for absorbing fine dust passing through the filter screen.

Preferably, the telescopic tube is trumpet-shaped.

Preferably, the outside of the sleeve is provided with a level gauge to facilitate observation of levelness.

The utility model has the advantages that the transition exhaust structure is arranged in the sleeve pipe through the telescopic pipe connecting sleeve pipe, so that the drill bit can be covered through the telescopic pipe during the drilling operation to prevent solid particles and dust from flying away, and the sound diffusion can be reduced; the filter screen filters out larger solid particles so as to avoid damaging the exhaust fan; the exhaust fan and the drill bit are matched for use and rotate together to form negative pressure airflow, dust is sucked actively, and the drill cuttings are prevented from falling onto hands to damage the skin. The utility model provides a double-deck EMUs raise face drilling technical problem, filled EMUs technical field blank, when having improved production efficiency, product quality, shortened production cycle.

Drawings

Fig. 1 is a front view of the present invention:

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a right side view of the present invention.

Detailed Description

Referring to fig. 1-3, the trumpet-shaped transparent extension tube 1 of the present invention is connected with a sleeve 2, and the extension tube can be used to cover the drill bit to prevent solid particles and dust from flying away, and simultaneously can reduce the diffusion of sound. When the air exhaust fan is used with a handheld electric drill in a matched mode, the sleeve is sleeved on the front portion of a shell of the handheld electric drill, the sleeve is provided with the air exhaust hole 3, and the filter screen 5, the air exhaust fan 4, the bearing 6 and the bearing support 7 are sequentially arranged inside the sleeve from the air inlet direction. The middle of the filter screen and the air holding fan is provided with a through hole. The through hole in the middle of the filter screen is used for allowing the drill bit to pass through, and the filter screen mainly aims to filter larger solid particles so as to prevent the exhaust fan from being damaged. The through hole in the middle of the exhaust fan is matched with the drill bit for use, and can be directly sleeved at the bottom of the drill bit to enable the drill bit and the through hole to rotate together so as to achieve the effects of forming negative pressure airflow and actively absorbing dust. In order to further enhance the effects of filtering dust and purifying air, a secondary filter screen or a dust collection bag can be installed in the exhaust hole in the sleeve, so that a small amount of fine dust passing through the filter screen cannot float into the air, a level meter 8 is arranged outside the sleeve, and whether the equipment is vertical or not is observed through bubbles inside the equipment.

Claims

1. The utility model provides a double-deck EMUs floor raises face and bores protector which characterized in that: the novel dust collector comprises a telescopic pipe and a sleeve connected with the telescopic pipe, wherein the telescopic pipe is used for covering a drill bit, exhaust holes are formed in the sleeve, a filter screen, an exhaust fan, a bearing and a bearing support are sequentially arranged in the sleeve from the direction of an air inlet, the filter screen is used for filtering large solid particles, through holes are formed in the filter screen and the exhaust fan, the drill bit penetrates through the bearing support and the bearing and is fixed at the through holes of the exhaust fan and the filter screen at the bottom of the drill bit after passing through the through holes, the exhaust fan is driven to rotate together when the drill bit works, active dust collection is achieved, a level meter is.

2. The double-layer motor train unit floor face-lifting drill protector according to claim 1, is characterized in that: a secondary filter screen or a dust collection belt is arranged at the exhaust hole on the sleeve and used for absorbing fine dust passing through the filter screen.

3. The double-layer motor train unit floor face-lifting drill protector according to claim 1, is characterized in that: the extension tube is in a horn shape.

4. The double-layer motor train unit floor face-lifting drill protector according to claim 1, is characterized in that: the outside of the sleeve is provided with a level gauge for observing levelness.