Daily maintenance of sealant strip of automatic feeding concrete mixer
1. Check whether the sealing strip of the automatic feeding concrete mixer has large cracks and fractures. If the sealing strip breaks, it can be repaired with adhesive. In particular, the use of special adhesive for sealing strip can easily repair the large crack strip. Of course, if the seal is seriously damaged or aging, it is easy to replace it with a new seal.
2. The driver shall apply a layer of high permeability protective agent after cleaning the door and window sealant strip with the detergent of automatic feeding concrete mixer, which can not only prevent the aging of the sealing strip, but also improve the sealing performance of the sealing strip. In addition, the gaps between the sealing strips are easy to be filled with sand and dust, resulting in corrosion. Therefore, the sand and dust should be removed with a brush.
3. When replacing the whole vehicle body, a layer of sealant shall be applied to the overlapping part of the weld. The thickness of the adhesive layer shall be about 1mm, and the adhesive layer shall be free of defects such as virtual adhesion and bubbles. 3mm-4mm elastic coating and anti-corrosion coating shall be applied on the lower surface of the whole floor and the lower surface of the front wheel housing.
How to maintain the automatic feeding of sealant on the concrete mixer?
4. The sealing of door and vehicle body is a difficult part. The sealing requirements are relatively strict. The part to be sealed is relatively long. The section shapes of each sealing part are different, and the door is opened and closed frequently. Three and four seals are often set on the automatic feeding concrete mixer, and the structure of four seals at the front pillar and roof side beam is installed. This multi-channel seal is generally arranged in the seam of the front door. In addition to the sealing function, it also has the function of automobile sound insulation and noise reduction.
5. After the window glass is damaged, the driver shall check whether the sealing strip is damaged when changing the glass. Because the window can not return to its original shape after repair, in addition to ensuring that the window can be easily pulled or lifted, pay attention to the sealing around the window. If the gap between the glass and the glass slot is uneven, and the rubber strip has poor contact with the glass and glass slot, the driver can easily pull off the sealing strip by hand.
6. When changing the roof, the driver should first apply a layer of conductive sealant at the compression joint around the roof, and then apply the folding adhesive in the water channel and the joint after welding, which not only helps to seal the body, but also prevents the body from early corrosion due to ponding at the flanging weld.
7. The skylight of automatic loading concrete mixer is the basic configuration of most family cars. When the car sunroof is opened, the rubber sealing strip track is exposed to the air, which will inevitably accumulate dust and even run into small gravel. Prolonged use may cause the sunroof to deform due to wear and block the drain hole. Therefore, it is very important to clean the track regularly and apply lubricating oil to the track.
Although the sealant strip of automatic feeding concrete mixer truck is a small part in the car body, it can ensure the stability and massiness of opening and closing the door. It can also make the car weatherproof, dustproof, heat insulation and sound insulation, and play a decorative effect on the edges of door and window joints. When the vehicle body is vibrated and twisted, the sealing strip also plays the role of cushioning, shock absorption and glass protection. Therefore, there is no trivial matter in the maintenance of automatic feeding concrete mixer, and any link can not be ignored.