The Air scissor lift valve is a valve shaft movement guide section

the two gate valve sub intake valve and exhaust, its role is to open and close the intake and exhaust channel, which consists of a header portion and the rod components. A head for opening and closing the intake and exhaust passage, the valve stem portion is used to guide the movement. Ordinary alloy steel intake valves, exhaust valves are made ​​of heat-resistant alloy, because the exhaust valve head in direct contact with the combustion gases, heat seriously.
In order to ensure the use of the scissor pallet truck valve head and valve seat close fit between the tapered joints and thermal conductivity, valve head and valve seat, and by grinding. The angle between the cone and the top plane is called the taper angle of the valve, the valve cone angle of the commonly used 30 ° and 45 °. The valve is a valve shaft movement guide section. Common valve shaft with the rear cut grooves for the installation of the conical locking tabs.
Valve seat: the cylinder valve seat is on the (side-mounted valve) or cover (overhead valve), the direct electric pallet jack processing of the circular seat hole, play with it and the valve seal. Some wear-resistant alloy cast iron valve seats available for processing into the seat, mounted on the cylinder block or cylinder head.
Valve guide: its role is to guide the valve for proper axial movement, while the heat will be transmitted to the valve stem portion of indirect water jacket. To facilitate repair, replacement, valve guides made ​​separately and then pressed into the cylinder block (or cylinder head). When the valve guides pressed into the cylinder block (or cylinder head), there should be a certain amount of interference and indentation depth, in order to ensure good heat transfer.
Valve spring: its role is to ensure the valve and valve seat seal, and to mitigate and overcome the inertia forces the valve and other transmission parts produced, to prevent damage to normal working gas distribution agencies.

Counterbalanced forklift trucks moving back and forth in order to rely on the fork unloading cargo.

Counterbalanced forklift trucks are the most widely used form of construction, accounting for over 80% of the total forklift. It is characterized by the fork extends in front of the body electric pallet jack outside the contour of the wheel center of gravity of the goods fall. In order to balance the weight of the goods produced by the overturning moment, maintaining longitudinal stability forklift in the body with a balanced amount of the tail. Counterbalanced forklift trucks moving back and forth in order to rely on the fork unloading cargo.
Straddle truck, which features a leg in front of the truck along with a small wheel can be inserted into the cargo powered pallet trucks pallet fork and fork, and then upgrade the goods by the forks. As the center power pallet jacks of gravity of goods within the base area surrounded by front and rear wheels, the truck's stability. Generally use batteries for energy, from the weight of the 2T less. Straddle more than counterbalanced forklift trucks simple structure, small weight and dimensions, fit in narrow passages and interior stacking, handling, but the low speed, small-diameter wheel walking on the ground demanding.

Below small answer you. An ordinary battery

Currently on the market used electric forklift battery is divided into three categories, ordinary batteries, dry charged batteries and maintenance-free batteries, then three batteries were what characteristic? Below small answer you.
An ordinary battery
Standard battery forklift is composed of lead plates and lead oxide, the electrolyte is an aqueous electric pallet jack solution of sulfuric acid. Its main advantage is that the voltage stability, cheap; drawback is the low specific energy (ie energy per kilogram of battery storage), life is short and routine maintenance frequently.
2, dry-charged battery
Its full name is dry charged lead-acid battery, its main feature is the negative plate has a higher storage ability, in a completely dry state, the resulting electricity can be saved in two years, when used, simply add the electrolysis fluid, etc. can be used over 20-30 minutes.
2, maintenance-free batteries
Maintenance-free batteries Counter-balance Stacker due to their advantages of structural electrolyte
consumption is very small, in the life of the basic need to add distilled water. It also has shock, high temperature, small size, low self-discharge characteristics. Battery life is generally twice the ordinary. Maintenance-free batteries on the market, there are two: the first one at the time of purchase disposable after use, do not need to add electrolyte maintenance (adding replenisher); another factory when the battery itself has added a good electrolyte and sealed users simply can not add supplementary liquid.

hand pallet truck loading height shall not obstruct the driver's line of sight

1, manual forklift fork carrier when the goods shall be required to adjust the distance between the two forks so electric pallet jack that both forks load balancing not skewed, the goods shall be affixed by the backrest side, the weight of the fork carrier shall comply with the load center of the curve signs regulations.

2, loading height shall not obstruct the driver's line of sight.

3, during the process of loading and unloading cargo, you must use the brake forklift.

4, when the fork close to or withdrawal of the goods, the speed should be slow and steady, do not pay attention to the wheels rolling cargo, wood pad, to avoid being compacted matter overfly wounding.

5, with the goods when the goods cross on to take the fork should be as deep as possible into the fork load manual Platform Stackers following, but also pay attention to the fork or sharp objects can not be met other goods. After the minimum should be used to stabilize the mast tilting loads to avoid load sliding backwards. When lowering the load, make a small mast forward, in order to load and extract the fork placed.

6, prohibited goods and fork to take the high-speed collision with a fork head with a hard object.

7, forklift operation, prohibited personnel standing on the forks.

8, when the forklift fork to take the goods, prohibited personnel standing around the fork to avoid collapse of the goods wounding.

9, prohibit the use of fork lift personnel engaged in high places, in order to avoid falling from height accident.

10, are not allowed at the pier on the shores of the goods shipped directly to the fork.

11, prohibit the use of single fork operation.

Fixed hand pallet truck platform safety inspection rules

Fixed lifting platform safety inspection rules
A range
1.1 This standard specifies the technical requirements for stationary lifting platform , inspection rules , test methods.
1.2 This standard applies to fixed installations in industrial production workshops , warehouses and other places , the vertical transport of goods to reach a certain height or fixed floor flat loading and unloading operations , and its lifting devices connected electric pallet jack by rigid member bench , lifting height of not more than 10 meters , speed not more than 0.3m / s, using power-driven lifting platform , and in the " special Equipment directory" ( national quality pot [ 2004 ] No. 31), the type of lift lifting platform types.
1.3 This standard does not apply to lifting equipment used in a closed elevator hoistway .
Inspection 1.4 mobile lifting platform can refer to this standard .
2 Normative references
The following documents contain provisions by the standard reference in the standard terms . For dated references , subsequent amendments ( excluding corrections) or revisions do Hand pallet jacks not apply to this standard, however, are encouraged to use the latest versions of these documents in accordance with the parties to reach an agreement on this standard . For undated references, the latest versions apply to this standard.
JB 5320-2000 scissor lift safety rules
JB / T 9229.2-1999 scissor lifts technical conditions
3 Terms and definitions
3.1 Fixed lifting platform fixed elevating platforms
Permanently installed in the specified location , and the lifting device is directly connected with the work surface or elevating work platforms connected by a rigid member, hereinafter referred to as the lifting platform .
3.2 workbench work bed
Elevating work platform components to accommodate or place items.
4 General requirements
In addition to the provisions of this part of the test methods and testing equipment , but allows the use of other advanced and reliable test methods and test equipment.
4.1 Test Power requirements :
Power equipment shall be consistent with the lifting platform designed power during the test. Supply voltage deviation is ± 5%, and rated frequency of the power frequency should be within the range