zhongxinladder

First, which preparatory work before use the ladder , should do 1. Guaranteed that all rivets, the screw bolt and nut and the active part connection is close, ladder column and step reliable reliable, extension circlip, hinge work shape　　　Condition good 2. The ladder maintains clean, does not have the fat, the greasy dirt, the wet paint, the putty, the snow and so on slippery material 3. Operator's shoe maintains clean, forbids to put on Pi Dexie Second, which questions in the ladder use should pay attention. 1. The body is weary, takes when the medicine, drinks wine or has the physical strength barrier, forbids to use the ladder 2. ladder to lay aside in the firm steady ground, forbids to place does not have skid resistant and on fixed equipment's ice, the snow or the slippery place surface 3. When work forbids to surpass the mark the most greatly load-bearing quality 4. Forbids to use the ladder in the gale 5. The metal ladder electric conduction, avoids approaching the charged place 6. When climb the human faces the ladder, both hands grips, the bodily center of gravity maintains at two ladder columns central 7. When work do not stand in leaves in the ladder crown 1 meter scope on the step, forever retains 1 meter safekeeping of security altitude, do not climb the crown highest center of resistance 8. When work the hand do not surpass the top of the head, in order to avoid the body loses balanced, has the danger 9. Forbids to surmount directly from ladder's one side to another one side Third, how to operate the foldaway ladder (two folding stairs and four analyzes ladder) 1. Cages launches outward the ladder column, hears “carbazole” the sound simultaneously to lock the block to enter the position, indicates the hinge already this position locking. 2. The unblanking moves the handle to open the lock, simultaneously locks the block to draw back to the position, indicated that the hinge has unlocked, this time may change the ladder column clamp angle or receive folds the ladder 　　* if meets the handle to pull motionless, is unable situation which unlocks, this is because the hinge stress oppresses locks the block, this time Cola lives in the ladder column to shake, then relieves the external force 3. After the inspectionladder  exhibition becomes the running condition, please careful confirmation all hinges be when the latched position only then uses, if has the lock block to be in the position the hinge, may open its symmetrical hinge, then receives the folding stairs column inward the approximately 40 degrees, launches outward again then causes this to lock to the hinge 4. Attention 　 　a. span is smaller than or was equal to that 4 meters ladders may launch Cheng Zhiti to use, this time the ladder and the ground included angle should be bigger than 75 degrees　　　　, the ladder middle hinge should face the wall 　　the b 0.4 folding stairs when serves as the platform, by all means must fills up thickness at least 1cm the plate 　　c. works as some people when the ladder the work, refuses other people to move the handle to change hinge's fixed condition Fourth, how to operate the extension model ladder (second company to rise ladder, third Lian Shengti, two-sided elevators, two-dimensional transformation ladder, three dimensional transformation ladder) 1. Shan Tihuo the extension type ladder and the ground included angle approximately is 75 degrees, the ladder base to the vertical center of resistance length approximately for working length one of four points 2. After extending the ladder, maintains the overlapping part the least superposition distance should satisfy the following standard 　　Sees extends the chart which the ladder examines signs Fifth, ladder's maintenance and services 1. The regular clean ladder, avoids certain chemical substance corrosion ladder surface. Periodic inspection connection spot, when necessity replenishment lubricating oil 2. If meets the ladder material changes curved, breaks off or the bridge piece cannot the normal work, relates by all means must with the manufacturer, carries on the specialized service 3. The environmental condition bad will reduce ladder's service life, generally speaking, its service life for indoor 2 years, outdoor 1 year Sixth, the glass fiber material's characteristic glass fiber material is one compound materials, by the non-alkali glass fiber, the continual felt and the resin and so on bonds becomes. The intensity is higher than the ordinary steel products, the proportion compares the aluminum lightly 1/3, the water-absorptivity is extremely low, under the tide warm environment the electric conduction, the electricity insulation energy level is not good. The glass fiber material simultaneously has the quality to be light, the intensity is high and the insulation unique quality, is other materials is unequalled.