New trailer, during the run-in period, should always check brake oil, coolant, battery electrolyte is sufficient, found lack time to add. Of the company after the specified mileage, vehicles from the first check in time to the service station maintenance, oil change, filter, etc, and overhaul the chassis system.
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Multiple cables, hanging in the cabin lift shafts on the sheave room at the top. Steel cable suspension balance on the other end. General car plus 50% load is the weight. When the car moves, will move in opposite directions. Sheave is relying on the rough surface of the cables and friction between the grooves on the wheel to drive the car. So when the steel cable or sheave becomes old and must be replaced in due course to prevent skidding. Motor responsible for the driven sheave rotation, powered up or put down the car. Motor may be communication, there may be direct current. Partial motors using gears drive sheave, the newer and faster lifts typically using gearless drive. Some senior haulage type elevator weight compensation: under the car and counterweight is provided with a cable or chain, connect to ground. Role is to compensate for the flying car or counterweight cable length weight variation caused by change. Haulage type elevator will have a variety of safety devices to prevent the car due to cable breakage, for any reason, such as the degradation caused by brake failure. Minimum safety equipment including: installation of cables in the engine room the speed limiter, install safety gear in the car and counterweight. Safety gear is invented by Otis when the mechanical safety devices, automatically when accelerating to a speed clamp Rails, Park the car or counterweight brake. At the bottom of lift shafts, will be equipped with buffers, as the last protection.
Car supported by the bottom or side of the plunger up and down, piston driven by hydraulic pressure. Folding parts plunger can be used as a telescope, reducing the needed depth at the end of it. Parts plunger cannot be folded, subterranean installation must dig a hole. Because of restrictions on piston, hydraulic lift is generally only used in 2 to 5 storeys high building (not more than 20 metres). Advantages of hydraulic elevators is the engine room can be set in any position (can't leave the car too far, of course), and occupies less machinery is relatively easy; general use problems there is less chance of happening. But also have a large power, low speed faults, not higher than 1 meter per second, and emits heat when running. Therefore, computer room air conditioners must be used to cool down, otherwise the lift's lousy, even shut down due to overheating.
Elevator door lift door is two-tier. Within a layer of the gate is mounted on the car, commonly known as a car door. Switch machines installed on top of the car-driver car door, called the door. Outside a door is mounted on the lift shafts on each floor entrance, commonly known as the door (or door), which passed by the car door, close the door opener driven. Door springs (or hammer) is held in the closed state, prevent someone from falling into the hole. Interior doors with sensors (with reference to mechanical or light curtains-safety edge), sensors there are two kinds of mechanical and optical, prevents the extrusion to people or goods. Fold in the form of points and two doors from free pair folded, if specifically requested, or 30 percent.
Concrete mixing station is composed of mixers, material weighing systems, material handling systems, material storage system, control system composed of five major systems and other ancillary facilities of the building material manufacturing equipment, its main principle is to work to cement for cementing material, mixing the raw materials such as sand, lime and cinder, finally making concrete, as input to construct a production of wall materials. Since its use of concrete mixing station, playing an important role in China's building materials industry has been, of course, this is the superior characteristic of concrete mixing station itself decided.
concrete mixing
station not only has an excellent mixer of concrete mixing station, it also has a variety of sophisticated accessories, such as screw conveyors, metering sensors, pneumatic components, these components in the operation of concrete mixing station in a high degree of reliability, and precise measurement skills and long service life. Meanwhile, repair and maintenance of concrete mixing station sites are equipped with deck or check the ladder, and with enough manipulation of space, and mixers can be equipped with automatic cleaning system for high voltage, with features to fuel and automatic over-temperature alarm function for easy maintenance.
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Prepare concrete placement of signal cables and radio, dual controls, columns, walls, concrete pouring, it make sure the lamp is pump stop, halt State stopped pouring required advance 4S stopped, turn off the light at the front desk, communication must assign, nighttime construction, control must match on flashlights, see concrete level.
- This year's initial, China vehicle service centers issued a "specification for concrete mixer
truck of the announcement of the management requirements of the notice" requirement to curb unhealthy development of the concrete mixer truck market at present. In recent years, domestic manufacturers producing tank capacity is growing in volume, in today's market, the 6x4 chassis do 12 Parties have fairly widespread; 8x4 chassis has 16 or even more be done, the overload of the concrete mixer truck driving in the city every day, concrete tanks have increased the height of Center of gravity of the vehicle, truck rollover caused casualties of traffic accidents occur frequently.Various
automobile manufacturers and
testing bodies in order to further standardize the
management of
the announcement of concrete mixer truck, through research, and agreed to consult the Ministry of industrial policy Division, now the concrete mixer truck management requires notification of the announcement are as follows: 1. in the regulatory requirements, technical requirements for truck-mounted concrete mixer, add the following three points:(1) concrete mixer truck should conform to the requirements in the following table: two-axle tank car volume cannot be greater than 8, three-axle vehicle tank compartments shall not exceed 12 square, four-axle cars of tank volume cannot be greater than 16.(2) the concrete mixer
truck's mixing drum fill rate should be not less than 51.5% (fill rate definition: mixing stirring volume and geometric volume ratio, expressed as a percentage). (3) the stirring capacity of concrete mixer truck shall meet the following requirements: stirring capacity Max load (kg)/density of the concrete (kg/m3) x110% Note: the concrete density recommended by GB/t 26408-2011 of the truck-mounted concrete mixer 2400kg/M3. 2. to declare the administrative requirements of parameters: (1) the original notice in the parameters bar of "volume" parameter is corrected to "stirring volume" parameter, stirring capacity according to the definition of the truck-mounted concrete mixer GB/T 26408-2011. (2) in record parameter in the increased tank body geometry capacity, and tank body installation dip parameter, and stirred capacity and tank body structure diagrams, diagrams content should including tank body size (as tank total length, and tank body maximum od, and into material mouth diameter,), and tank body material (refers to contact media of material, including aluminum, and stainless steel, and carbon steel, and non-metallic,), and tank body wall thick, and tank body stirred capacity calculation process. 3. starting from 269 batches of notices, should the relevant manufacturers and testing bodies in accordance with the requirements for reporting and testing of new products. 4. in the notice does not comply with the technical requirements of the relevant product, the relevant manufacturer should be on notice of the rectification before July 1, 2015, will suspend fails to meet the requirements of the product announcement.From the data listed in the table above you can clearly see that if the new rules were to be implemented, then mainstream large concrete mixer truck on the market today will be the end, overload will be contained. But the current situation of domestic policy measures on, want to truck mixer market back to norm, also takes a long time to remedy.