Luffing tower cranes are a type of Tower Crane commonly used in construction projects. Unlike traditional tower cranes, luffing tower cranes have a jib that can be raised or lowered to adjust the height and reach of the crane. This allows them to work in tight spaces or in areas with height restrictions.
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Overview of the type of mobile refueling tanker and tanker, adding fuel tankers, automatic reels, refueling guns, pumps and other major components on the basis of tankers.
Dedicated performance and optional equipment configuration depending on the use of fuel pump, flow meter (back to zero), tax-controlled tanker, automatic return reel, refueling gun. Centrifugal pumps, gear pumps, chemical pumps, stainless steel pumps, with a large flow, fast suction and other characteristics; Designed to achieve pumping, pumping out of the table, the pump into the pump but the table, self-flow over the table, but the table can be separated from the warehouse, a variety of oil distribution and other functions. Dedicated configuration: 1. Tanker: Shanghai Bray Computer Taxable Fueling Machine, Guangdong Hengshan Fueling Machine, Beijing Sanjin Fueling Machine, Beijing Jialijia Fueling Machine, Zhengzhou Zhengxing Fueling Machine. 2. Pump: Shandong Boshan pump, Jiangsu pump, Suizhou Yifeng pump 3. The main functions: self-priming oil, from the oil, computer tax control fuel, flow in the refueling and other functions Design the tanker function according to the main purpose of the mobile refueller. Refueling truck manufacturers standard refueling vehicles can achieve independent sub-positions, can be divided into different oil products, chemicals, designed to achieve the pump into the pump out of the table. The material of the tank body is carbon steel, stainless steel, lining rotomolding, glass steel. Pot-shaped square, oval, round. Oil pumps use self-priming pumps and gear pumps. The oil meter uses single-count, double-count, tax-controlled fuel dispensers. You can also choose to install water tanks, European standard tanks, and subsea valves.
The use of fuel dispenser Note: 1, to the fuel dispenser power supply, to ensure that the voltage in the DC10V ~ DC30V range, so as not to peak voltage burn computer components. 2. Because the fuel supply pump to the refueling machine is self-provided by the automobile, in order to ensure the pressure stability, the automobile pipeline should be equipped with an overflow valve. If not, it should be noted when ordering, requiring the refueling machine with a relief valve to avoid damage. Tanker. 3. When using the oil gun (oil dispenser automatically returns the reel), avoid using the oil gun's oil filling pipe to knock on the oil receiving container, press the switch and other incorrect operation, this operation may damage the root of the oil filling pipe and cause oil leakage. To check regularly, tighten the stop screw on the fill tube to prevent loosening or damage to the root of the fill tube. 4. The tank should be cleaned regularly to keep the oil clean. 5. The filter is installed in front of the oil inlet of the tanker. Since the conditions of oil products are not the same everywhere, the replacement cycle of the filter cannot be clearly defined; when the flow of the tanker suddenly decreases, replace the filter; The traffic is still abnormal. Check whether other components affect the traffic. If the traffic is affected, replace the traffic.
Analysis of fault solving of mobile refueling vehicle fault analysis of ignition system 1. When inspecting the circuit fault of the ignition system, do not use the method of scraping fire to check the on/off of the circuit. This method is easy to damage the electronic components and the circuit should be switched off or not. The multimeter is electrically blocked for inspection. 2. When the engine is starting and working, do not touch the ignition coil high voltage wires and distributors with your hands to avoid electric shock. 3. When disassembling the battery, make sure that the ignition switch and all other electrical devices and their switches are turned off for disassembly. 4, when installing the battery, be sure to identify the positive and negative poles, negative ground. Do not connect wrongly. The polarity of the battery and the clip must be firmly connected. Otherwise, the electronic device may be easily damaged. 5, when the high-pressure test fire, it is best to use any insulating rubber clips to test any high-voltage line, direct contact with the high-voltage line by hand easily cause electric shock. Another way to avoid electric shock is to insert a high voltage lead into a spare spark plug and then ground the spark plug housing. Observe whether the spark jumps from the spark plug electrode gap. 6, in the case of the ignition switch is turned on, do not connect or cut off the line of operation, so as not to burn out the electronic components in the controller. Mobile refueling vehicle maintenance and care matters 1, avoid not checking the plunger stroke margin In the satirical test of a plunger-type fuel injection pump, many maintenance personnel did not pay attention to checking the stroke allowance of the plunger. The so-called plunger stroke margin refers to the amount of movement that the plunger can continue to ascend after it is top-dead-centered on the camshaft. After adjusting the start time of fuel supply, the reason why the travel allowance is also checked is because the stroke allowance of the plunger is related to the wear of the plunger and the sleeve. After the plunger and sleeve are worn out, the plunger must move upwards for a while to start oil supply, thereby delaying the start of oil supply. When the adjustment bolt is screwed out or replaced with a thicker adjustment pad or spacer, the lowermost position of the plunger moves upwards, so that the stroke margin of the plunger is reduced. Therefore, when repairing and debugging the fuel injection pump, it is firstly necessary to check the travel allowance to determine whether the injection pump also allows adjustment. During the inspection, the following different methods should be used according to the different structures of the fuel injection pump: a) Turn the camshaft, push the plunger to the top dead center, remove the oil valve and valve seat, and measure with a deep vernier. b) After the plunger is topped to the top dead center, use a screwdriver to pry the spring seat of the plunger spring to raise the plunger to the highest point. Then use a thick gauge inserted between the plunger lower plane and the tappet adjustment bolt to measure. The standard travel distance of the plunger is about 1.5mm, and the limit stroke after wear is not less than 0.5mm. 2, avoid cylinder sleeve and piston new products without installation When replacing cylinder liners and pistons, the new cylinder liners and pistons are considered to be standard parts. They are interchangeable and can be used when they are installed. In fact, there is a certain tolerance range between the size of the cylinder liner and the piston. If the cylinder with the largest size is equipped with the piston with the smallest size, the fitting gap will be too large, resulting in weak compression and difficulty in starting. Therefore, the standard cylinder sleeve and piston size grouping code must be checked when reloading. The cylinder sleeve and the piston must be assembled so that the standard piston size grouping code is the same as the standard cylinder sleeve size group code. Only in this way can the two be guaranteed. With standard fit clearance. 3, avoid cylinder gap measurement is not allowed When measuring the cylinder gap, it cannot be measured in the direction perpendicular to the piston pin hole of the piston skirt, but measured in other directions. The structural characteristics of the aluminum alloy piston is that it is small and large, it is a cone, and the partial section is oval, so the cylinder gap along the circumferential direction is not equal. During the measurement, it is specified that the clearance in the direction of the long axis of the ellipse shall prevail, that is, the clearance of the piston skirt perpendicular to the direction of the piston pin hole shall be measured. This measurement is more convenient and accurate, and in the reciprocating motion, the direction of the piston skirt perpendicular to the pin hole of the piston is greatly abraded due to the effect of lateral pressure. Therefore, when measuring the cylinder gap, the piston skirt should be perpendicular to the piston. Pin hole direction measurement.
Maintenance of the refueling vehicle 1. The use and maintenance of the chassis and engine parts of the vehicle shall be carried out in accordance with the instruction manual of the truck. 2. The use and maintenance of the oil pump are strictly performed according to its use and maintenance instructions. [1] 3. The use and maintenance of fuel dispensers should be performed in accordance with their instructions for use. 4. The filter net should be frequently disassembled and washed. 5. Oil tanks and piping systems should be cleaned regularly. 6. Safety valves should always be checked and cleaned. 7. Regularly check whether the joints of the pipeline system are well connected and reliable. 8. After each work is completed, the ball valve handle should be turned to the closed state. 9. The ball valve should not normally be in a half-open state to avoid damage to the seat. 10. After each work is completed, cover the inlet and outlet end caps (blocking caps) and the ends of the oil hoses (blocking caps) in time. 11. The oil loading should not exceed the rated loading quality. (According to oil density conversion). 12. The power take off box must be removed before driving. 13. Before the refueling truck is operated, it must be inserted into the damp soil with a conductive rod, and the grounding chain should be grounded. During the operation process, static conduction should always be maintained. 14. When driving on a refuelling vehicle, it must be chained. 15. Before refueling trucks work, should check the pipeline system for oil leakage, whether the grounding line is disconnected, whether the exhaust pipe is damaged, and the problem should be solved before operation. 16. It is not allowed to strike the parts on the refueling car with metal objects, so as to avoid the occurrence of sparks. Care should be taken not to generate sparks during the operation. When the oil is measured, the relevant regulations shall be followed. 17. The vehicle is equipped with two fire extinguishers. The user of the fuel tanker should be familiar with the use of the fire extinguisher and inspect and maintain it in accordance with its instructions for use. 18. When working in the tank, care should be taken to ensure good ventilation and there must be protection outside the tank.
Luffing tower cranes are especially useful in urban environments where space is limited. The ability to adjust the jib angle allows the crane to work around obstacles such as buildings or other structures. They are often seen on high-rise construction sites, where their versatility and compact design make them ideal for lifting and moving heavy loads.
The luffing mechanism of these cranes allows for precise control over the load, making them suitable for projects that require delicate or precise movements. They are also known for their quick and efficient operation, with the ability to lift heavy loads to great heights in a relatively short amount of time.
Overall, luffing tower cranes are a valuable asset in the construction industry, providing flexibility, efficiency, and safety in various construction projects.
Mobile refueling vehicle
The China Automotive Industry Refueling Vehicles Catalog contains a list of China Ministry of Industry and Information Technology's refueling car cars. All 9 Categories 178 Manufacturers 154 Refuelling Vehicle Brands 4194 Refueller Product Information, Latest Refueling Vehicle Bulletin, Environmental Notice, Fuel Bulletin, Free Announcements, pictures, news, and the most timely refueling truck quote price information.
Used for the transportation and storage of petroleum derivatives (gasoline, diesel, crude oil, lubricating oil, coal tar, etc.). According to different use and use environment, there are many kinds of refueling or transporting oil functions, which have the functions of oil absorption, pump oil, multiple oil loading and distribution.