Improving Air Quality in 路building
每年春天, crews head out onto our roads and highways to repair all the cracks and potholes that otherwise mar our driving experience. Milling machines that prepare sections for repaving are a familiar sight. 在过去的几年里, significant technological advances have significantly reduced the airborne dust from the milling process. 在本期的专家角, 韦德娱乐1946 milling expert Chaunce Edwards, Technology Support Specialist for our construction division, explains how Bomag’s Ion Dust Shield (IDS) raises the bar for roadbuilding air quality.
How does the milling process expose people to dangerous particles?
The milling process removes material from sections of existing roadways so that you can repair cracks and potholes and all that terrible stuff. Milling machines allow us to target only the layers that need repair. To do the cutting, we use a rotating drum with carbide picks. That produces a lot of dust, some of which is silica dust, essentially very fine sand. 这种材料可能有危险, especially to workers who could be exposed to it for extended periods of time, 也对路过的人说.
How has this been dealt with in the past?
旧技术, which has been around for a long time, uses water to cool the picks on the drum, and that also helps to keep the dust down. It uses a pressurized system and spray bars situated across the drum.There have been several improvements to that. 一是使用 水添加剂 它们被添加到水箱中. Those are very expensive, but it is imperative to use them to reduce the dust and cool the drum.
另一项技术是 真空切割系统, which vacuums the dust as it comes off the drum and sends it up through the conveyor onto the truck. Finally, some vendors use pressurized cabs to protect the operator from dust.
Machines with these technologies meet ISO standards and the current NIOSH testing requirements for safety. Bomag’s Ion Dust Shield (IDS) adds to that existing technology to make the air even safer.
离子防尘罩是如何工作的?
The IDS is situated at the end of the conveyor. What we do, is force that dust-filled air through the sealed conveyor into a box. Inside the box are electrically charged blades that attract the really fine particles. So, they go into the truck instead of going into the air. Interestingly, it is not a filter, so it doesn’t have that maintenance requirement.
IDS删除 the most dangerous particles – they are so tiny that you don’t see or feel them, but they can get down deep in your lungs and cause silicosis. IDS删除 80%以上 那些有害粒子, so that’s a substantial improvement on top of the measures we already have in place with the older technology.
A big advantage is that instead of just protecting the operator who has the most exposure, the IDS protects people nearby by keeping these particles out of the air altogether. Those microscopic particles can stay in the air for a long time – if there is no wind, they can remain airborne for up to 30 hours. So, if you’re milling around a school or in a residential area, that could be a public hazard.
轰炸机2200/65
630马力@ 1900转(470千瓦@ 1900转)
最大工作重量
60296磅(27350公斤)
86.6 ″ (2200 mm)
铣削深度
12.8 ″ (350 mm)
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What role does 韦德娱乐1946 play in supporting this technology?
When we brought this technology to Canada, we wanted to ensure it met Canadian standards. So, we commissioned a test by a third-party company to verify the test results that BOMAG had obtained in Europe. 这个测试很复杂. You get workers to carry around what are called hygiene sampling pumps, which collect air that the worker would be exposed to over an 8-hour shift and store it in a tank. The quality of that air is then measured. We found that the European results were correct. We also confirmed that the existing BOMAG machines without the IDS meet existing industry standards.We are deeply committed to the advancement and integration of this cutting-edge technology. Recognizing its overall benefits, we have strategically incorporated it into every BOMAG铣床 我们卖.
底线是:
通过引入IDS, Bomag showed it is committed to improving safety and air quality wherever possible. 韦德娱乐1946 is dedicated to bringing this technology to Canadian roadways. By making this technology ubiquitous across our product range, we are ensuring the efficiency and effectiveness of our machines and contributing to a greener, 为子孙后代创造更安全的未来.
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