Many planetary gear reducer products for technology, you need to meet the requirements of many so spiral lift the main attention to the relevant technical requirements of equipment manufacturers the choice of the planetary gear reducer.
    Parts requirements:
    A key part material and processing requirements
    1) cycloidal gear. The material is high carbon chromium bearing steel GCr15 or GCr155iMn, after heat treatment hardness of 58 ~ 62HRC. Allow the use of the mechanical properties corresponds to that of other materials.
    2) the output shaft. The material is 45 steel, after heat treatment the hardness of not less than 170HBW. Allow the use of the mechanical properties corresponds to that of other materials.
    3) needle teeth shell. Material for HT200 gray cast iron, seasonal line aging, the hardness of 170 ~ 217HBW.
    (2) parts of the process technical requirements
    Base:
    Material: HT200 on the aging treatment, there should be no cracks, pores and inclusions and other defects
    Project: Bearing hole: J7 (use of non-aligning bearing)
      The Mouth: H7 (using self-aligning bearing in conjunction with the needle teeth shell)
      Horizontal plane seat center high
      Bearing bore, and in conjunction with the needle teeth shell roundness and cylindricity of the Mouth: not less than 8
      And needle teeth shell with only the mouth of the axis of one pairs of two axis of the bearing bore concentricity: not less than 8
      With the side face of the two bearing bore axis vertical with the needle teeth shell: not less than six
    Needle teeth shell:
      Material: HT200 aging treatment, there should be no cracks, pores and inclusions and other defects
      The center of pin teeth round: J7 or js7-
      Needle teeth Yue Kong: H7
      Flange end cap with the hole: H7
      With the base line with the Mouth: h6
      Pin tooth pin hole roundness and cylindricity: not less than 8
      With flange end cap with the roundness of the hole: no less than eight
      Base with the roundness of the Mouth: not less than seven
      Needle teeth center circle, flange end cap with the hole axis radial round beating: not less than seven
      Pin tooth pin hole axis vertical flange end cap with the end: not less than six
      With the flange end cap with the axis vertical with the base line with the axis of the Mouth: not less than five
      Both ends of the pin teeth shell parallel to the surface: not less than seven

1, safety helmets
, Safety helmets before use to check the cap shell cap liner and chinstrap is complete and effective.
2, the use of helmets before adjusting the helmet lining, cap lining the various parts of some space away from the cap shell.
3, cap hoop should be based on the type of the head to adjust the hoop tight to prevent the bow job hat before sliding to block the line of sight.
4, is strictly prohibited helmet two-tier roof lining together as a layer.
5, the helmet should be worn tight, wear is the hat band should be tied to the submandibular and fasten.
6, the date of the expiration date of the helmets manufactured from the product, the plastic cap of no more than two and a half fiberglass caps more than three and a half.
Second, the seatbelt.com/">seat belt
1, seat belts must be tested units inspected every six months before use.
2, the following conditions should be wearing a seatbelt:
(1) may be the work of aerial work, the workplace, who must wear seat belts; (2) more than two meters high altitude operations; (3) work on scaffolding scaffolding or railing more than 1.5 meters in height; (4) sloping roof job; (5) flat-topped houses, away from the edge of the roof or roof openings no fence within 1.2 meters; (6) any suspension of the platform or table; ( 7) any fence, decking, incomplete scaffolding; (8) close to the roof or floor openings near the ladder; (9) work at heights no reliable fall protection measures.
3, the proper use of seat belts:
(1) to tighten their belts, waist buckle components must be fastened Department is; (2) the use of seat belts for hoisting operations can not be linked directly hook the seat belt ropes, you should hook the seat belt rope hanging ring ; (3) prohibits the seat belt hanging on the components of the firm or with sharp angle; (4) with the type of seat belts, the various components can not be allowed to replace; (5) has been badly hit the seat belt, even if the appearance is not The change also can not be used; (6) prohibited the use of security of the pass heavy objects; (7) seat belt hanging in the top of a solid and reliable at a height of not lower than the waist.
Third, the safety rope
1, in order to ensure that high-altitude operations during the move, always have security guarantees, particularly dangerous job, the requirement to wear seatbelts at the same time, and hung in the safety ropes.
Prohibit the use of hemp rope to do a safety rope.
3, more than three meters long cord to be added to the buffer.
4, a safety rope can not be both at the same time.
Fourth, the differential protector
1, self-locking device should be checked prior to use.
Self-locking device, hook, should be hanging on the seat belt on the metal ring.
3, received a serious impact on the self-locking device should stop using it.

Metal halide lamp (1) metal halide lamp color rendering index of 80 or more, the light efficiency of 75 lumens / watt, the color temperature of 6000K. The advantages of long life, high luminous efficiency, good color rendering, energy-saving effect is obvious, is the fourth generation light source in the world today.
(2) high pressure sodium lighting efficiency of 90 to 100 lm / W, 2 and 7 times higher than the mercury lamp and incandescent light efficiency. 60 color rendering index, ultraviolet component, and not attracting insects, according to an object does not fade, the color temperature of only 2100K.
(3) self-ballasted lamps for light efficiency in more than 60 lumens / watt, four times higher than ordinary incandescent light efficiency, life expectancy of more than 8000 hours.
(4) double-capped fluorescent lamps (small diameter) with double-ended fluorescent (rough diameter) compared to life expectancy 20%, luminous efficiency increased by 22%, 10% energy saving, the life expectancy of up to 10,000 hours or more.
(5) electronic ballast 40-watt, 20 watt electronic ballast and inductive ballast from the power consumption savings of 5 watts, 3 watts, the annual saving of 20 families with a 20-watt electronic ballast kWh, a 40-watt electronic ballasts, saving 60 degrees, in addition to voltage as low as 130 volts can be the starter.
(6) LED lights LED lights is a new light source, color rendering index of 90 or more, the light efficiency of 110 lm / W, color temperature 4000-6000K. The advantages of life (greater than 50,000 hours), 80% energy saving, environmental protection (UV strobe heavy metals), the color is good. The light in the world today.

The energy-saving lamp style cylindrical, spherical, with a reflecting surface, spiral. Form factor of the energy-saving lamps to energy-saving lamps, lamp shape, divided into three U-tube, spiral pipe and straight pipe:
1, U-tube energy-saving lamps: tubular: 2U, 3U, 4U, 5U, 6U, 8U and other power from 3W-240W and other kinds of specifications. 2U, 3U energy saving lamp, diameter 9mm —- 14mm. Power is generally from the 3w-36w. Mainly used for residential and general business environment lighting. In the way used to directly replace incandescent lamps. 4U, 5U, 6U, 8U energy-saving lamps, diameter 12mm —- 21mm. Power is generally from 45w – 240w. Mainly used for industrial, commercial, ambient lighting. Used to direct alternative: use energy-saving lamps with energy-saving-chip power-saving 80% Samsung the Baishun high-pressure mercury lamp, high pressure sodium lamp, T8 straight tube fluorescent lamps.
2, spiral energy-saving lamps: the spiral tube diameter, sub-Φ9, Φ12, Φ14.5, Φ17, etc.. Spiral ring (T) number: 2T, 2.5T, 3T, 3.5T, 4T, 4.5T, 5T and other power from 3W-240W and other kinds of specifications.
3, bracket, energy-saving lamps: T4, T5, straight-tube energy-saving lamps: T5, T4, straight-tube energy-saving lamps. Power is divided into: 8W, 14w, 21W, 28W. Widely used in civil, industrial, commercial, environmental lighting. Can be used to directly replace T8 straight tube fluorescent lamps.

 
Energy-saving lamps also known as compact fluorescent lamps (CFL lamp abroad for short) it was first invented in 1978 by foreign manufacturers, because of its high luminous efficiency (which is five times that of ordinary light bulbs), significant energy savings, long life (ordinary light bulbs 8-fold), small size, easy to use and other advantages, valued and welcomed by the peoples and countries, China in 1982, first successfully developed in the Fudan University Institute of Electric Light Source SL-type compact fluorescent lamp, the past two decades, the production increased rapidly quality has improved steadily, the state has it as the national focus on the development of energy-saving products (green lighting products) as the promotion and use.

Now we are talking about energy-saving products are mainly for incandescent lamps in terms of Ordinary incandescent light efficiency about 10 lumens per watt or so, life is about 1000 hours, it works: When the lamp access circuit, current flows through the filament, the heating effect of current incandescent lamp emits a continuous visible and infrared, this phenomenon in the filament temperature to rise to 700K can be aware of the work when the filament temperature is high, most of the energy wasted in the form of infrared radiation due to the high filament temperature, evaporating quickly, so the life expectancy large shortened about 1000 hours.

Energy-saving lamps through the ballast to the lamp filament heating to about 1160K, the filament to emit electrons (because some electronic powder coating on the filament) electron impact argon atom inelastic collision, the argon atom collisions energy impact of mercury atoms and mercury atoms absorb energy transitions produce ionizing issued 253.7nm UV, ultraviolet excited light-emitting phosphors, the work due to the fluorescent lamp filament temperature of about 1160K, 2200K-2700K temperature than incandescent work much lower, so its life to improve, reaching more than 5000 hours, it does not exist, as current incandescent thermal effects, the energy conversion efficiency of the phosphor is also high, reaching more than 50 lumens per watt.

A, light does not light maintenance
  A. Common resonant capacitor C6 breakdown (short circuit) or the pressure decreased (soft breakdown) should be replaced by the pressure in the above 1kV with the capacity of high-quality polyester or CBB capacitors.
  Two. The lamp filament is open. If the lamp is not a serious black polyester capacitors of the broken filament lamp feet both ends of the parallel 0.047μF/400V emergency use.
  3. R1, R2, open or changes in value (generally the larger the possibility of R1 fault), 1/4W quality resistors with resistance substitution.
  4. The triode open. Found that only one transistor open, but can not replace one, and should be replaced a pair of pressure above 400V model matching switch. Otherwise prone to light roll or re-burn tube.
  5 Lights flashing. Tube if not serious black, check D5, D6 whether Weld or open, D5, the D6 soft breakdown or filter capacitor C1 leakage and bad, but also make the lights flash.
  6. Light difficult to light, and sometimes touch the lamp can be lit or light roll, which may be C3, C4, lack of capacity can not match.
  7. If the single low-power energy-saving lamps lit filament red or light emitting phenomenon, with or without soft breakdown should also check the D1 ~ D4, C1, installed anti-leakage, power part of a short circuit.
  8. The choke L and the oscillation transformer B core fracture. Should change a single core, we should pay attention to three points: (1) to meet the requirements of the core, or it may choke inductance values ??greater access to energy-saving lamps lay hidden; (2) of the magnetic gap can not be too small to avoid magnetic saturation; (3) magnetic backing band to band with the appropriate pad pad good adhesive glue, and wraps the high-temperature flame-retardant tape, to prevent loose. In addition to the B of the same name side could not be wrong.
  9. Overhaul trigger tube electronic ballast, should focus on checking bidirectional trigger diode, this pipe for general use DB3 type, two-way breakdown voltage of 32 ± 4V.
  Second, the components of apparent damage to overhaul
  A. Though not fuse the insurance, not blown into the line at the line resistance significantly damaged, the transistor loss will no doubt. The first lamp aging, followed by poor use of the environment, and may lose their capacity caused by C1. Two kinds of cases, replace resistors, transistors, it is best to also replace the pair with C3, C4, electrolysis. For the latter, C3, C4, having to replace C1 under high pressure, be sure to choose high-quality heat-resistant electrolytic capacitor substitution.
  Two. In the case of fuse insurance, blown into the line at the line, if the C1,, Q1, Q2, intact, you must individually D1 ~ D4 routine inspection and pressure testing. Or D1 ~ D4 quality product substitution.
  3. C1 burst, such as with the insurance of the fuse, blown into the phenomenon of the line, should D1 ~~ D4, C1, to replace them all.
  4. Q2 side of the RC, transistor burn out, you should focus on examination of C2 is the breakdown.
  5 If the high-frequency transformer B damaged, available ∮ 0.32mm high strength wire winding, T1, T2 in the high frequency magnetic ring of 10mm x 6mm x 5mm each for 4 laps; T3 8 laps (note the head and tail). The choke L,: lamp power ~ 40W, corresponding to between 1.5 ~ 5.5mH.
 
  Three, a small number of electronic energy saving lamps interfere with the remote control color TV phenomenon.
  Adjustable L the inductance or capacitance of C2, so that it does not interfere with remote control TV, but also safety at work.
  Note, the use of energy-saving lamps
  A. Energy-saving lamps can not be dimming lamps, delay switch, sensor switch circuit.
  Two. Should be avoided for use in hot and humid environment.
3. Electronic energy saving lamps and other lighting should not be frequent on and off.

Lighting plays an important role in our lives, a room without light there will be how to attract the footsteps of our home? Hero lamps to create a warm bedroom, we should be in intensive care, to keep the TV drama a we moved warm.
Buy back lighting, first do not just install, mark and read the installation manual should carefully look at the lamp, and then instructions for the installation, use lamps.
In addition, the light source parameters according to the sign provided the timely replacement of aging lamps found the redness of the tube ends, lamp black, or a shadow, when the bulb does not light the lamp should be replaced to prevent ballast burn and other dangerous conditions.
Cleaning and maintenance should be careful not to change the structure of the lamp should not replace the lamp parts. After the end of the cleaning and maintenance should be intact fixtures will be installed, not to leave the wrong installed lamps parts.
The same time, the use of lamps, try not to frequent switching. Lamps frequent starts the moment, the current through the filament current is greater than the normal working hours, making a sharp rise in filament temperature to accelerate sublimation, which will greatly reduce its service life, so to minimize the lamp switch.
Lamps in use, but also to strengthen the maintenance, in order to extend their useful life. Room lamp should always use a dry cloth, and pay attention to prevent moisture intrusion, so as to avoid a long time the phenomenon of corrosion damage or leakage short-circuit; installed in the toilet, the bathroom lights shall be fitted with a moisture-proof shade, otherwise it will greatly shorten the life; lights should be installed in the kitchen, pay particular attention to the anti-smoke, because the grease accumulation will affect the brightness of the lamp; light-colored shade transmittance good, but easy to James Gray, to be diligent to wipe, so as not to affect the degree of light penetration; lamps if available for non-metallic, rub a damp cloth to avoid dust accumulation, affect the lighting effect.
Lamps is best not to use water to clean, dry cloth wet wipe, if you accidentally run into the water to try to dry, should immediately after the lights with a wet rag.

 Timely maintenance of the exterior lighting is essential for the driver because it affects not only driving comfort, but also directly related to traffic safety. Normally be reminded, the owners are hardly aware of the headlights, taillights, turn signals or parking lights does not work. Incidentally, the work to replace burned out bulbs is very simple, the cost of DIY lighting system maintenance charges less than the repair station.
    More often, the failure of lights must not only be limited to the bulb has burned out, corroded socket or plug is damaged, this type of problem, often need to take professional diagnostic techniques to analyze the root cause of failure. Even those low-priced car, its internal and external lighting is also controlled by the main computer; those luxury cars, only their headlights by computer control.
    If your car has daytime running lights system DRLs (DaytimeRunningLamps), you must first understand the working principle of these devices. For example, some OK light system before starting the engine, and its running lights can not be opened; Department of daytime running lights, if the parking brake has not been canceled, even though the engine has started, the daytime running lights still not working properly. If the vehicle is equipped with a light-control light (ie, when the outside light is dim to a certain extent, the system has automatically turn on the headlights function), may wish to check the photosensitive lights from the weakest to the strongest state in the process of the work, of course, Do not ignore the check automatically turn off the timer. If the system is equipped with a timer, set it to maximum delay.
    If the headlight is damaged, usually similar to the lamps to be replaced. Some cars are equipped with high-intensity discharge headlamps HID, high-pressure arc discharge generated by the device through its pre-designed electronic systems generate a high density light source. Note that the ordinary quartz – halogen bulbs can not be in this application. Also, check whether the headlight lens crack, because the surface crack does not affect the lighting performance of headlights, but the moisture will penetrate along the cracks within the luminaire, which is bound to reduce the lamp life.
    Headlight illumination direction of the calibration should be included in the list of maintenance projects, in order to ensure maximum safety of the motorists driving, headlights must be able to provide good lighting for driving the vehicle.
    I seize the key, but also must not forget to test other light system, such as turn signals, vehicle license plate light, showing the wide light, parking lights, reversing lights and brake lights (including the middle of the high brake lights, CHMSL). In addition, many vehicles will be fog lights as standard equipment or a popular option, fog lamps is usually installed in the car a lower position, vulnerable to stone damage, its maintenance, in addition to check the lighting system itself, the headlight lens crack and should not be ignored.

        Do you know the exhaust fan noise; you know the types, construction of the exhaust fan; you know the working principle of the centrifugal fan; you also know the type of the outlet; but do not say you have a comprehensive understanding of the fan , the following described you do not know it!
Fan has a long history. BC for many years had been to create a simple wooden Husker windmill, its principle and the centrifugal fan is basically the same. In 1862, the British Kyu Bell invented the centrifugal fan, impeller, casing for the concentric type chassis used brick, wood impeller,air handling unit ahu straight blade, the efficiency is only about 40%, mainly for mine ventilation. 1880, design for mine row air volute casing, and backward curved blade centrifugal fan, the structure has been perfected.
1892 French for the development of cross-flow fan; 1898, the Irish design a forward blade the Xi Luoke type centrifugal fan, and widely used in various countries; the 19th century, axial fans used in mine ventilation and metallurgical industries blast a pressure of only 100 to 300 Pa, only 15 to 25 percent efficiency, rapid development until the 1940s.
In 1935, Germany, first using axial flow air compressor, boiler ventilation and induced draft fan; 1948, Denmark made ​​the operation of the variable pitch axial fan; rotating axial flow fan, Meridian accelerated axial fan, mixed flow fan and the cross flow fan development.
   We introduce the history of the fan I hope you can clearly at work may find helpful.

The rapid growth of China\\ s forklift sales in overseas markets, the contribution rate
    In 2007, China forklift sales reached 139,000, an increase of 30%; exports forklift 47000, an increase of 78%, the export volume accounts for about 34% of the sales; export incremental sales growth in the contribution rate of 65%.
    In 2007, the global forklift truck sales reached 907,000, an increase of 10%. Consumption by region: Europe accounted for the world forklift market share of approximately 40%; followed by North America (USA + Canada) market, about 21%; Chinese market share has more than 11%; In Japan, the proportion of not more than 10%; the rest of the world accounts for close to 16%.
    China\\ s internal combustion forklift trucks about 80% of the sales of internal combustion forklift trucks,forklift boom attachment electric forklift in the global forklift truck sales accounted for more than 50%, which is on the forklift truck market in Europe, the United States and Japan, electric forklift has become the sake of mainstream products. China\\ s environmental protection requirements are lower, more frequent forklift operation, the relatively poor operating environment and operating costs and other factors, the forklift needs of the long period of time in China will tend to use internal combustion forklifts.
    The pattern of global forklift truck market, Toyota and Linde ahead of the annual sales income of more than 50 billion U.S. dollars; An fork and Hangcha rule the roost in the domestic truck market, the total market share of over 50%.
    The total proportion of overseas markets is still low in China\\ s forklift export, cost advantage, as well as export tax rebates led to the grounds of domestic enterprises, export impulse is expected that the future of China\\ s forklift export will continue to maintain a rapid growth rate, by 2010 the compound growth rate of not less than 30 %. The next three years, domestic forklift sales growth is expected to remain above 20% will increase the degree of dependence on overseas markets. Exports have become the main propulsive force for sales growth.