Cement pipe is a kind of mechanized equipment, high degree of automation tube technology. In the 1980s, China has introduced a cement pipe equipment production technology and equipment, but because of the cost of equipment and other conditions, so that the process is not well promoted. Until the past six or seven years, the successful development of the domestic cement pipe equipment, technology and equipment to promote the rapid promotion in the country, using mandrel pipe vibration technology production of reinforced concrete pipes business has increased to more than 100. Through decades of development updates, from the original single circular pipe production development of a machine to produce the performance concrete products, equipment, a variety of shapes and varieties have been continuously improved.

       Although China's cement pipe equipment and technology has been well developed, but due to the level of equipment mixed picture on the mandrel and general lack of understanding of vibration, resulting in most enterprise applications in the course of the production process is also accompanied by the wrong system , unreasonable use of raw materials, processes supporting imperfect and many other issues. This article mandrel pipe vibration technology, equipment specifications and configuration requirements were discussed for the industry reference.

       1, cement pipe equipment technology requirements and molding system

       (1) To ensure the immediate release of the pipe upright shape and not produce shrinkage cracks, dry hardness concrete mix should be controlled between 20 ~ 60s.

       (2) shall be welded steel frame and reliable welding phenomenon may not tainted, the ends should be tightly wound skeleton ring bars, vertical bars outcrop which need repair addition, double steel frame must be connected.

       (3) Due to the lower concrete vibration concrete vibration time much longer than the upper part of the pipe to prevent air vibrating equipment should be in the feed (loose form) to the tube length of about 1/4 the height of the start-up.

       (4) In order to prevent the oppression of reinforced concrete reinforced molded from a rebound after transverse cracks, grinding nozzle pressure should be controlled in 1.0kg/cm.

       2, cement pipe equipment, machine performance requirements

       Cement pipe equipment fixed by the overall framework of the system, the vibrator (mandrel), concrete placing machines, rolling jack rubbing forming device, the working hydraulic system, lubrication cooling station system, electrical control systems, mold, working accessories (composition) 9 part finished damping flip frame, the outer mold hanger.

       Cement pipe equipment fixed by the overall framework of the system, the vibrator (mandrel), concrete placing machines, rolling jack rubbing forming device, the working hydraulic system, lubrication cooling station system, electrical control systems, mold, working accessories (composition) 9 part finished damping flip frame, the outer mold hanger.

       About to be enacted at the national industry standard, "reinforced concrete pipes mandrel pipe vibration machine", the performance of the machine made ​​the following requirements.

       (1) After the installation should be no-load operation, the components should be running smoothly, no abnormal noise.

       (2) the cement pipe equipment operating temperature range 5 ~ 40 ℃, relative humidity should not exceed 85% of the supply voltage at (380 ± 19) V condition should be able to work reliably.

       (3) cement pipe equipment operating noise should not exceed 110dB (A), the operating noise when the machine is larger than the pipe 85dB (A), to deal with the noise sources into the staff area for noise protection.

       (4) the exciter should be able to work 55 ~ 75Hz frequency excitation, exciter bearing working life should not be less than 2000h, reliable locking device requires exciter, in the production process should not occur and cause loose mechanical damage.

       (5) Rotary hopper fabric devices should be configured to automatically broken arch device at the discharge port of the material should be smooth and arch material phenomenon should not occur when transporting concrete mix should be smooth, without throwing phenomenon, fabric belt fabrics should be able to automatically adjust the radius to adapt to different diameters, feed rate should be adjusted to meet the needs of different specifications of the product.

       (6) in a rotary motion rolling device, you should walk a smooth, accurate positioning, locking securely; rolling cylinder regulator should have increased the speed control function under pressure, grinding pressure can be adjusted on a rolling device should be set every vibration device, avoid mechanical and hydraulic actuator assembly is damaged; rubbing cylinder should buffer device work smoothly coordinated action may not appear crash.

       (7) when the hydraulic system, the hydraulic oil is in the range of normal oil temperature 30 ~ 60 ℃, the maximum should be greater than 85 ℃, a minimum of not less than 15 ℃. (8) lubrication cooling system should be able to ensure the continuous operation of equipment, each deputy campaign should use the specified lubricants, and can time, quantitative filling, oiling position visibility is good, filling and convenient.

       (9) the effect of the mold should be reliable and efficient transmission vibration, lock should be safe and reliable, there should not be loosening the lock, the positioning mechanism should ensure that the positioning accuracy of the mold.

       (10) electrical control should be used in electronic devices suitable for industrial environments, and can be controlled on the main parameters of the cutting speed, vibration frequency, molding time, the console (cabinet) should be able to accurately control the position of the display, temperature, pressure, frequency of major equipment such as working conditions, to have the timing or mutual position control device requirements, should be on the electrical interlock or chain control.

    Shandong Sheng Machinery Co., Ltd. has been dedicated sub-cement products machinery research and development, production and sales, with advanced equipment, superb technology and two years of professional experience, the company has always been at the forefront of research and development center block making machine market development , watching the advanced technology at home and abroad, to develop products for the investment needs of different users, there are block making machine, hydraulic tile machine, cement pipe machine, blender, hanging roller machine, wire rod machine equipment. Currently has 19 branch offices and six foreign countries (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported to more than 100 countries and regions.