Granulation Line,Extrusion Granulation Line,Double Screw Extrusion QINGDAO SHUNDE PLASTIC MACHINE CO.,LTD , http://www.shunde-china.com
The pump truck system consists of five parts: boom, pumping, hydraulic pressure, support and electric control. Concrete pump operating system and performance: The control mode of the electric pump control system for concrete pump trucks currently consists of five types of mechanical, hydraulic, electromechanical electrical control, programmable controller, and logic circuit control. In addition to the installation of electrical control systems to complete the control tasks, concrete pump trucks are also equipped with manual control and control systems, which are also part of the control system. If mechanical manipulations are used, there are generally rod-type and soft-axis control mechanisms. If the two are compared, it is not difficult to find that the flexible shaft control mechanism has more advantages, such as flexible arrangement, high transmission efficiency, less transition joints, and small idle stroke and convenient stroke adjustment, so the control system of the concrete pump truck The main choice is the flexible shaft control mechanism. According to actual needs, in the operating system of the pump truck should be able to achieve stepless speed control operation, and the locking mechanism that can make the lever stop in any position is a key device to achieve stepless speed control operation, generally can use the disc spring Or spring board and so on. For ease of operation, the joysticks are designed and installed in a more convenient position. For example, the Putzmeister BSF36.09Z type pump truck, whose joystick controlling the engine speed is mounted on the side of a ladder, is convenient to operate. The control system of the concrete pump truck is mainly used to control the flow rate of the main hydraulic pump and the engine speed, thereby changing the concrete discharge volume of the pump truck. If the hydraulic control is used, the hydraulic driving force can be directly obtained from the pumping system of the pump truck, and the control can be realized through the manual hydraulic valve. It is inseparable from the performance of concrete. At the same time, attention is paid to the details of the operating procedures in the course of operation, timely detection and timely troubleshooting, in order to improve the working efficiency of the pump. There are two methods of pipe cleaning: water washing and air washing. Whether washing or air washing, the valve body and hopper should be cleaned. When washing, put the water-filled cylindrical cement bag and washing ball into the cleaned conical tube one after another. Connect the conical tube and pipe, close the discharge door, and fill the hopper with water. Continuous water). Pump water until the cleaning ball emerges from the front of the transfer tube. Air-washing means compressed air purging. The soaking water cleaning ball is first plugged into the air inlet and wash joint, and then the first straight pipe connected to the reducing pipe is connected, and the safety cover is connected to the end of the pipe. The hole is to face down. The pressure of the compressed air should not exceed 0.8 MPa. The air valve should be opened slowly. The atmospheric valve can only be opened when the concrete can flow smoothly.
The World's Best In December 2008, Zoomlion acquired Italy's CIFA as the world's largest concrete equipment manufacturer, and the country’s strongest research institute (National Institute of Construction Machinery). The longest pump truck in the world is the SY5650THB 72 pump truck produced by Changsha Sany Heavy Industry Group, Hunan, China. Vertical boom height of 66 meters (216 feet 6 inches), Guinness World's longest boom pump truck; Pumping displacement 200m/h (262yd/h), equipped with large-diameter transfer cylinder, good suction performance, less number of commutation, extending the life of wearing parts; Computer energy-saving control, automatic power matching, average energy saving 20%; Integration of automatic high and low switching, automatic return of helium piston, GPS and many other advanced technologies; Front swing type multi-stage telescoping legs and unilateral support are suitable for narrow site construction; Boom damping technology extends boom life and improves end hose performance.
Record History of Pumping Heights In the late 1960s, Putzmeister launched the 16-m boom lift truck; in 1986, the world's longest boom-mounted boom truck pump, which was developed at 62 meters, was born. After all, the Germans used nearly two decades to raise the boom height by nearly 40 meters. Once again, this record is refreshed and it has waited for 20 years. This time the protagonist has become a Chinese company. In 2007, Sany Heavy Industries took the lead in the industry to launch a 66-meter jib pump truck, surpassing Putzmeister in one fell swoop and becoming the world's longest boom truck pump manufacturer. In that year, the Sanyi 66-meter boom truck also won the Guinness World Record for the world's longest boom truck. It is worth mentioning that this is the first Guinness Book of China's construction machinery industry. At the time, the concrete pumping industry spread the word widely: The length of a concrete pump truck boom was increased by one meter. However, a subsequent series of facts proves that it is not difficult for China’s construction machinery companies to “put on the blue skyâ€. In 2009, Sany refreshed its own record. The length of the pump truck boom was increased to 72 meters. The pump truck created the world's first largest boom length and the world's first world record for concrete pumping capacity. What is particularly worthy of attention is that the Taiwan-based 72-meter pump truck was successfully delivered to customers and became the longest boom pump truck ever used in actual construction. In 2011, the self-developed 86m pump truck developed by Sany Heavy Industries was successfully off the assembly line and once again set a world record. In just two years, a leap from 72 meters to 86 meters was achieved. At the time, Sany Heavy Industry's 86-meter pump truck achieved three of the world's best - the longest boom, the largest number of boom sections, and the largest pump displacement. In just a few years, Sany achieved a “triple jump†in the world record of pump boom height. In 2011, Zoomlion's 80-meter jib pump truck was off the assembly line almost at the same time as Sany Heavy Industry's 86-meter boom truck. In contrast to Sany, the Zoomlion launched the 80-meter carbon-fiber boom truck pump independently developed by CIFA’s latest European technology. The pump truck is the longest boom truck based on the GM chassis. Carbon fiber boom trucks and many other world records have also been certified by the Guinness Book of Records. On September 28, 2012, Zoomlion launched a series of "China or the world's best" products at the Zoomlion's 20th anniversary celebration. The most dazzling star product was the world's longest at 101 meters. Jib pump truck. Because Zoomlion not only created the Guinness Book of Records once again, it is even more surprising that Zoomlion has increased the record by 15 meters. [1]
The Sany Group, a global manufacturer of manufacturing machinery, is the world’s top 50 construction machinery manufacturer, the world’s largest concrete machinery manufacturer, the top 10 Chinese company, the most comprehensive and competitive enterprise in the construction machinery industry, and Forbes “China’s top companyâ€. China has the most growth. Independent brands, China's most competitive brands, iconic brands in the Chinese construction machinery industry, and top 500 Asian brands. The main business of Sany Group is the machinery and equipment manufacturing industry with the theme of “engineeringâ€. Currently, it has fully entered the field of construction machinery manufacturing. The leading products include construction machinery, road machinery, mining machinery, piling machinery, lifting machinery, non-excavation construction equipment, port machinery, and wind power equipment. Among them, concrete machinery, piling machinery and crawler cranes are the No. 1 brands in China. Concrete pump trucks have completely replaced imported concrete pumps. The domestic market share has reached 57%, which is the highest in the country. It has been ranked first in the world for continuous production and sales for many years. Zoomlion: China's only national standard for concrete machinery [2] Formulation and revision of qualified units Zoomlion is adhering to the corporate culture concept of “Sincerity-free, Broad-minded and Forging aheadâ€, with both endogenous development and extension-oriented development. At present, the production and operation bases are distributed in China, Hunan, Shanghai, Shaanxi, Guangdong, and Milan, Italy. It has formed Zhonglian Science and Technology Park, Silicon Valley Industrial Park, Quantang Industrial Park, Changde Guanxi Industrial Park, Wangcheng Industrial Park, and Yiyang Yongjiang. Industrial Park, Shanghai Industrial Park, Shaanxi Yinan Industrial Park, Italy CIFA Industrial Park and other industrial parks, with a total area of ​​nearly 3 million square meters. With a world-class super-large steel structure plant, modern processing equipment and automated production lines, it has a complete sales network that covers the whole country and extends overseas, and a powerful service system. The company's integrated quality, environmental and occupational health and safety management system has been certified by TÃœV Rheinland. It has been the first in the domestic construction machinery industry to implement CE certification for products in accordance with EU standards, and has obtained Russian GOST certification and Korea safety certification. At present, the most famous domestic production enterprise is Sany Heavy Industry. It is well known that Mitsubishi Heavy Industries has built three associations abroad.
Operation and use of an application security note [3] 1 Concrete pump trucks can only be used for conveying concrete. Any use other than this (such as lifting heavy objects) is dangerous. 2 The height and distance of concrete pumped by the pump truck arm are strictly calculated and experimentally confirmed. Any subsequent extension of the hose at the end of the hose or lengthening of the end hose by more than 3 m is not allowed. The resulting risk is The operator himself 3 Unauthorized prohibition of modifications to the pump truck that may affect safety, including changes to safety pressures and operating speed settings; use large diameter ducts or increase duct wall thickness to change control procedures or circuits. Changes to booms and legs, etc. 4 Pump operators must wear safety helmets and comply with safety regulations and safety regulations on the site Two support safety precautions 1 The supporting ground must be horizontal. Otherwise it is necessary to make a horizontal support surface. Cannot be supported on cavities. 2 The pump truck must be supported on a solid ground. If the maximum pressure of the leg is greater than the ground allowable pressure, the support surface area must be increased by using a support plate or an auxiliary square beam. 3 Sufficient safety clearance should be maintained when the pump truck is supported near the pit or slope 4 When supporting, it is necessary to ensure that the whole machine is in a horizontal state, and the maximum declination angle of the whole machine before and after the horizontal direction does not exceed 3 degrees. 5 When the legs are unfolded or folded, the range of rotation of the legs is a dangerous area, and personnel may be pinched in the range. 6 When supporting, all the legs must be retracted and deployed to the specified position (the legs are aligned with the arrow on the lug, the front leg arms are aligned with the forward legs extending arm arrows) otherwise there is a risk of tipping over 7 The arm must be supported as required to operate the boom, and the arm must be placed on the main support of the boom before it can receive the leg. 8 Factors that have caused a decrease in stability must be immediately retracted and the arm support must be re-supported after removal. Factors that reduce stability include: Ground conditions caused by rain, snow or other sources of water Ground sinking on one side of support leg Outrigger cylinder leaks Three extension arm safety precautions 1 The boom can only be operated after confirming that the pump truck legs have been properly supported. The operating boom must be carried out in the order stated in the operating instructions. 2 The boom cannot be used in thunderstorms or bad weather conditions. Booms cannot be used in weather conditions greater than 8 winds 3 When operating the boom, all the boom should be in the operator's field of vision 4 Be careful of the danger of electric shock when working near the high voltage line. Ensure the safety distance between the boom and the electric wire. 5 Below the jib is a dangerous area. There may be concrete or other parts falling and hurting people. 6 The end hose must not be stationed within the specified range. The pump hose must not guide the end hose when it starts pumping. It may oscillate or inject concrete and cause accidents. The danger zone when starting the pump is the area around the swinging end hose. The area diameter is twice the length of the end hose. The maximum length of the end hose is 3m, the diameter of the danger zone is 6m. 7 Do not bend the end hoses. The end hoses should not end in concrete. 8 If the boom does not operate normally, press the emergency stop button immediately. The professional can identify the cause and exclude it before continuing to use it. Four pumping and maintenance safety precautions 1 When the pump truck is running, do not open safety protection facilities such as hopper screens, water tank covers, etc., and do not put hands into the hopper, or inside the tank or grab other moving parts. 2 When pumping, it is necessary to ensure that the concrete inside the hopper is above the position of the foot plate shaft to prevent the concrete spray caused by the inhaled gas. 3 When plugging the pipe, it is necessary to first reverse the pump to release the pressure in the pipe before you can disassemble the concrete pump pipe. 4Maintenance and repair work can only be performed when the pump truck is placed on a stable surface and it is ensured that no accidental movement will occur. 5 Maintenance and repair work can only be carried out when the boom is folded or securely supported, the engine is closed and the legs are fixed 6Before maintenance, must first stop and release the accumulator pressure 7 If the boom hydraulic lock is opened without first fixing the corresponding boom, there is a risk of the boom falling and hurting
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