CN-121973105-A - Metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment and control method thereof

Abstract

The invention provides a metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment and a control method thereof, wherein the system comprises a fixed cover, a fixed cover and a dust collection device, wherein the fixed cover is provided with at least one dust collection opening and is used for being connected with a dust collection fan; the floating cover is communicated with the fixed cover, is suspended below the fixed cover through an elastic supporting mechanism and is used for covering the periphery of the lower part of the floating grinding head, and can be tightly attached to a floor under the pressure of the elastic supporting mechanism when the floating grinding head descends and grinds, and the telescopic connecting piece is connected between the fixed cover and the floating cover in a sealing mode and allows relative axial displacement of the fixed cover and the floating cover. The invention solves at least one technical problem of dynamic sealing failure of the dust hood, explosion safety hidden trouble of aluminum powder and excessive dust absorption negative pressure in metal floor polishing operation to interfere with polishing quality.

Inventors

• LI JIABAO
• WANG CHENGJUN
• HOU XINLI
• ZHANG YUEPENG
• YE DONGDONG
• LIU HOULI
• Bao Suya
• WANG BUYUN
• ZHU MING

Assignees

• 安徽工程大学
• 南京绥德自动焊接装备有限公司

Dates

Publication Date

20260505

Application Date

20260403

Claims (10)

1. 1. Metal floor is polished explosion-proof dust pelletizing system based on flow field self-adaptation is adjusted, characterized in that includes: The fixed cover (10) is provided with at least one dust collection opening (11) for connecting a dust collection fan, and the fixed cover (10) is used for being fixedly arranged on a lifting module of a mobile operation machine and for being provided with a floating grinding head (50); The floating cover (20) is communicated with the fixed cover (10), is suspended below the fixed cover (10) through an elastic supporting mechanism (30) and is used for being covered on the periphery of the lower part of the floating grinding head (50), and can be tightly attached to the floor under the pressure of the elastic supporting mechanism (30) when the floating grinding head (50) descends and grinds; And the telescopic connecting piece (40) is connected between the fixed cover (10) and the floating cover (20) in a sealing way, and allows the fixed cover and the floating cover to axially displace.
2. 2. The metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment according to claim 1, wherein the cover openings of the fixed cover (10) and the floating cover (20) face downwards, and a connecting frame (21) is arranged at the upper part of the floating cover (20) and a communication hole (22) is formed in a separated mode.
3. 3. The metal floor polishing and explosion-proof dust removal system based on flow field self-adaptive adjustment according to claim 1 or 2, wherein the dust collection opening (11) extends into the cover, and the lower port of the dust collection opening extends into the fixed cover (10) or the floating cover (20).
4. 4. The flow field adaptive adjustment-based metal floor polishing and anti-explosion dust removal system according to claim 2, wherein the elastic support mechanism (30) comprises: a connecting rod (31) connected between the fixed cover (10) and the connecting frame (21), And the spring (32) is sleeved on the connecting rod (31) and is positioned above the connecting frame (21).
5. 5. The metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment according to claim 4, wherein an adjusting sleeve (33) is further screwed on the upper portion of the connecting rod (31), and the adjusting sleeve (33) is abutted with the upper end of the spring (32) and used for adjusting the pretightening force of the spring (32).
6. 6. The metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment according to claim 1, wherein the inner peripheral wall of the floating cover (20) is further provided with an active air nozzle (23) for forming an air curtain between the floating cover (20) and the floor after a certain pressure gas is accessed to prevent dust from overflowing.
7. 7. The metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment according to claim 6, wherein the active air nozzle (23) adopts a circle of inclined holes or inclined slits inclined towards the inner side, and the inclined holes or the inclined slits are communicated with an annular air passage (24) arranged in the floating cover (20).
8. 8. The flow field adaptive adjustment-based metal floor polishing explosion-proof dust removal system according to claim 6, further comprising a displacement sensor for acquiring a floating amount of a polishing head (51) at the bottom of the floating polishing head (50) so as to strengthen the air injection pressure of the active air injection port (23) to a set value through the controller when the floating amount or displacement change rate of the polishing head (51) exceeds a threshold value.
9. 9. The flow field adaptive adjustment-based metal floor polishing explosion-proof dust removal system as set forth in claim 6, further comprising: The temperature sensor is used for measuring the temperature of the air flow in the cover or the dust collection pipeline, and controlling the system to stop working through the controller when the temperature or the temperature rise exceeds a threshold value; And the pressure sensor is used for measuring the negative pressure value in the cover or the dust collection pipeline so as to control the controller to reduce the dust collection pressure when the negative pressure exceeds a threshold value.
10. 10. The metal floor polishing explosion-proof dust removal control method based on flow field self-adaptive adjustment is applied to the system of any one of claims 6 to 9, and is characterized by comprising the following steps: In the cleaning stage, when the floating cover (20) is at a preset height from the ground, the dust suction fan is started to a preset cleaning gear, and the air curtain is started to the preset cleaning gear so as to clean the floor; In the polishing stage, after the floating cover (20) contacts the ground, the dust suction fan is adjusted to a preset working gear, and the air curtain pressure is adjusted to a preset maintaining gear for blocking the edge of the floating cover (20); A floating stage, when detecting that the displacement or the displacement change rate of the polishing head (51) exceeds a set threshold, lifting the air curtain pressure to a preset reinforcing gear and maintaining the preset time to prevent dust from overflowing; And at the end stage, after the polishing head (51) is lifted, the dust collection is delayed to operate so as to suck residual dust.

Description

Metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment and control method thereof Technical Field The invention relates to the technical field of industrial robots and automatic surface treatment, in particular to a metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment and a control method thereof. Background In the manufacture of rail transit vehicles such as high-speed rails and subways, surface roughening treatment is required to be carried out on an aluminum alloy floor so as to increase the adhesive force of subsequent rubberizing. The technology currently faces three technical problems: Dynamic seal failure-the existing floating grinding heads such as force control grinding heads can float up and down (Z-displacement) along with floor fluctuation during operation. If the dust hood is fixed on the frame, the hood is suspended when the grinding head sinks, so that dust overflows. If the dust hood is movably arranged on the frame, instantaneous gaps are easily generated along with the floating of the grinding head, so that ultrafine aluminum powder is leaked. Potential safety hazard of blasting, namely that aluminum powder generated by polishing belongs to primary explosive dust. In closed pipelines, if active intervention on 'flow field temperature' or 'dust concentration' is absent, once sparks are polished out, explosion is extremely easy to be initiated in the negative pressure pipeline. Negative pressure adsorption interference in order to pursue high dust removal rate, the traditional system often uses high-power dust collection, so that the negative pressure in the cover is overlarge, the grinding head is sucked on the floor, the effect of precise force control grinding is seriously interfered, and uneven grinding is caused. Disclosure of Invention The invention aims to provide a metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment and a control method thereof, which solve at least one technical problem of dynamic sealing failure of a dust hood, explosion safety hidden danger of aluminum powder and excessive dust absorption negative pressure interference on polishing quality in metal floor polishing operation. In order to solve the technical problems, the technical scheme of the invention is as follows: in a first aspect, the invention provides a metal floor polishing explosion-proof dust removal system based on flow field self-adaptive adjustment, comprising: the fixed cover is used for being fixedly arranged on a lifting module of the mobile operation machine and used for being provided with a floating grinding head; The floating cover is communicated with the fixed cover, is suspended below the fixed cover through an elastic supporting mechanism and is used for being covered on the periphery of the lower part of the floating grinding head, and can be tightly attached to the floor under the pressure of the elastic supporting mechanism when the floating grinding head descends and grinds; the telescopic connecting piece is connected between the fixed cover and the floating cover in a sealing way and allows relative axial displacement of the fixed cover and the floating cover. Further, the cover openings of the fixed cover and the floating cover face downwards, and the upper part of the floating cover is provided with a connecting frame and is divided into a communicating hole. Further, the dust collection opening extends into the cover, and the lower port of the dust collection opening extends into the fixed cover or the floating cover. Further, the elastic support mechanism includes: A connecting rod connected between the fixed cover and the connecting frame, And the spring is sleeved on the connecting rod and is positioned above the connecting frame. Further, the upper portion of connecting rod still spiro union has the adjusting collar, the adjusting collar with the upper end butt of spring for adjust the pretightning force of spring. Furthermore, the inner peripheral wall of the floating cover is also provided with an active air nozzle which is used for forming an air curtain between the floating cover and the floor after being connected with gas with certain pressure so as to prevent dust from overflowing. Furthermore, the active air nozzle adopts a circle of inclined holes or inclined slits inclined towards the inner side, and the inclined holes or the inclined slits are communicated with an annular air passage arranged in the floating cover. Further, the device also comprises a displacement sensor which is used for acquiring the floating quantity of the polishing head at the bottom of the floating polishing head so as to strengthen the jet pressure of the active jet to a set value through the controller when the floating quantity or the displacement change rate of the polishing head exceeds a threshold value. Further, the method further comprises