Use fine aggregate concrete pump techniques

Now use the fine aggregate concrete pump more widely today on how to use fine aggregate concrete pump this problem, give us a presentation.

1, before the job needs to be conveyed to the concrete as to understand, should meet the concrete pump can pump requirements.

2, more than five minutes when the pumping stopped, the operator must be concrete end of the hose is discharged, it will easily lead to the end of the hose due to concrete dehydration, resulting in the next job pumping concrete issues to splash around, and this is also the end of the hose is easily damaged.

3, in order to ensure the boom pumping work in the best condition, should be: the one arm lifted to 45 degrees. The fabric is then swing the lever 180 degrees. Then two arms stretched 90 degrees. 3,4,5 section extending arm and was in horizontal position.

If the last boom can be in a horizontal position, it is ideal for pumping. If the position of this section of the boom is horizontal, then the flow will slow down the speed of the concrete, thereby reducing wear and the end of the hose pipes. When the pumping stopped, only the end of the concrete machinery will flow out of the hose.

5. Place the maximum level allowed by the machine inclination angle of 30 degrees, because the horizontal tilt angle over the General Assembly to make the fabric steering gear overload, and endangering the stability of the entire machine. If the boom in the mobile, one leg or several legs which had been off, this time the operator will have to re-set legs, and keep all of the legs can always supported on the ground.

6, after use, if necessary folding boom extend or retract, be sure to remind everyone that the anti-pump 1-2 times before the action, so to avoid when placing pipes, inside the concrete falling or splashing.

How to deal with the phenomenon of crack concrete equipment side panel?

Concrete equipment understanding of people know that in the course of concrete equipment, the phenomenon will appear side cracking can be considered one of the small irregularities, today we give manufacturers of professional and technical people tell you about the cause of this phenomenon causes and treatment methods, hoping to help you in the future when encountered the same situation can be quickly and correctly solve or avoid.
Causes of cracks:
1, fly ash (sand) too small, body can not keep up early strength
2, body density is too large
3, excessive body drop
4, the ratio of water, the lack of an elastic body
Solution:
1, (1) improve the cutting hardness (2) increase the sieve Fly
2, (1) Capacity control (2) the use of additives to improve the strength of the cutting body
3, body 10 cm cutting table saw must pause, then slowly falling
4, (1) reduce the specific gravity of the slurry (2) increase the amount of slurry (3) reducing the amount of lime
We mixed concrete batching plant manufacturers will be more to tell you about various irregularities and treatment methods appear in concrete production equipment, hoping people would like to know the content and timely attention to update our content on your site, help you solve the problem as soon as possible or to avoid misunderstanding. I hope you can help.

Tower Crane Safety General Provisions

Metal structure is the material basis for the main part of the tower crane, tower crane is elevated to withstand gravity and the main part. According to incomplete statistics, in 2013-2015 between all tower crane accidents reported, the overwhelming majority of the tower crane collapse, which is improper maintenance of metal structures are closely related. So do the metal structure tower crane maintenance crane production safety has an indispensable significance for extending the life of the tower crane, ensure.
First, the metal structure tower crane maintenance crane steel structure must be strictly enforced scrapped.
Secondly, the main structure of the force should always check the metal fatigue strength, weld cracks, structural deformation, damage, etc., the main force structure for processing.
hangzhou truemax crane rental company Recommendation: Check the work of structural members according to the following procedure.
(A) Daily inspection: tower crane at work every 80 hours should be a routine check. Tower crane driver should shift check all bolts connecting parts again
(B) When the tower crane abnormal sounds or misuse occurred, or discover the tower crane safety protection device malfunction, etc., should be checked.
(C) When a project is completed, after the demolition of tower crane, by engineering and technical personnel and professional maintenance personnel conduct a detailed examination, and make records.
In addition, in the transport process should try to try to prevent collision damage and structural deformation. It is worth mentioning that, Shandong crane tower crane rental companies recommend metal structural parts required every six months to a year stencilled paint - times. Before painting the metal surface should be divisible by oil, rust and other contaminants.