2013年11月24日星期日

The pump action is exerted on the cooling fluid pressure


Whether it is a good assistant or combustion forklifts are electric forklift warehouse jobs , as companies  increasingly popular warehouse forklifts, so many handling operations to a forklift, an increase in the number of forklifts , forklift improper use can also lead to "sick" Therefore, to understand the performance of the forklift , will "remedy ." Today, I will introduce the forklift water cooling system.
Forklift water cooling system is  composed of a fan , sub- pipes, thermostat, blinds, water jacket , radiator , water Straddle stackers pump coolant temperature gauge and other components. The most commonly used in the market , the most common is the forced circulation type water cooling system. If the engine is equipped with a cooling intensity adjustment device , and blinds , fans and other components thermostat , the engine in cold ambient temperatures can quickly reach optimum operating temperature Hand fixed lift table and prevent excessive cooling .
1 Thermostat
 The role of the thermostat is to  blame variable coolant circulation routes and traffic, you can automatically adjust the cooling intensity , so that the coolant temperature is kept at 80 ° C-90 ° C, the thermostat is generally installed in the cylinder head or pump outlet into the inner pipe .
 2 , the pump
 The pump action is exerted on the cooling fluid pressure , cooling fluid circulation .
3 , fans
Fans role is to facilitate ventilation of the radiator. Usually the fan is mounted behind the radiator , to better facilitate ventilation. When the fan is rotated to generate the suction air , the air flows along the axial direction , from front to back airflow through the radiator , so that cooling air flow through the radiator to accelerate cooling fluid for cooling the engine acts .

2013年11月17日星期日

when you can not meet the requirements, should set the security protective layer


the construction should  not cross the vertical direction up and down in the same job .Lower operating position , should be in the upper height may fall outside the scope of the radius , when you can not meet the requirements, should set the security protective layer. a electric pallet trucks ariety of demolition work ( such as steel formwork scaffolding , etc. ) above shall not be removed when the following simultaneous clearing of ; material from the edge of the temporary storage place shall be not less than 1m.
building entrances, lifts and other officers to concentrate on the discharge port at the top,
Should be set protective shed . Protective shed length of not less than the height of falling objects protective radius requirements.
to participate in lifting operations personnel , including drivers , cranes, signal conductor , welders etc should be special operations personnel , must be through professional training, examination to obtain certification, and can be confirmed by the experience of persons in high places .
before large-scale lifting operations should be carefully survey the scene , according to the preparation power pallet jacks of engineering characteristics and operating environment of special programs, and technical director for approval by the enterprise , which include : on-site conditions and measures to project overview and construction technology , lifting machinery selection basis , lifting derrick design calculations , anchor design, the design of wire rope rigging letter selection , ground and road endurance requirements , component diagrams and stacked in place lifting process in a variety of protective measures.
lifting machinery to enter the scene after inspection and acceptance , reassemble the crane should be required to make a trial run , including static and dynamic load tests , and various safety devices sensitive to reliability testing. Derrick after assembly shall be approved by program try hanging test, confirmed to meet the requirements before use.