1. When the violence is closed, (mostly the gusts are blown off by the gusts). The horn latch is easy to get rid of the hook, or the door is twisted or the bolts are loose and protruding, and the door frame cannot be opened.

a. If it is a horn lock, please see the "Anti-locking how to do a text".

b. In the case of auxiliary locks, (mostly installed in iron doors, copper doors), the locking tongue or the handle of the handle tongue is loose and protruding, and the door frame cannot be opened. (Look for a flat-blade screwdriver, and push the protruding screw from the door to the inside to dial back).

2. When the foreign object is stuck, the handle or the key is difficult to twist. (Please make sure that the door is open inside or open outside to stand inside, open outside - the door pulls inwardly, and the door pushes outward when opening. When the person stands outside, the outside opens - the door pushes inward When the door is opened, the door is pulled outwards to reduce the card force and easily open the door.

3. When the locksmith comes to unlock the lock, he said that the lock is broken and you can't open it. Do you believe it? At this time, you can find another one to open it. I often encounter the lock and the main talent is telling the second. Hand, surprised to open so soon, the last one opened for a long time can not open, said that the lock is broken, can not open, to be replaced (a better lock, maintenance and normal use, use ten No problem in the year) Some lock stores will not open the excuse, ask for new ones, some are technical problems, some are not willing to spend too much time to unlock. (It is best to find a fixed, reliable credit lock service)

4 When the door lock cannot be opened with a key, there are two cases:

a. It can't be opened from the outside with the key. When the lock lever or push button switch is pulled from the inside of the car, the door can be opened. In this case, the lock lever is removed. (When you used to ask someone to open the door lock with a pull hook, , the most easy to take the lock to take off the hook hook). (Remove the decorative panel on the inside of the door, push the lock to move the rod, and hook back to the positioning)

b. Open with the key from the outside, can drive the lock bar (straight type can see the lock bar move up and down, the horizontal type is left and right, can be heard when not visible, the sound of the switch action) or the lock bar can be pulled from the inner surface. However, it is impossible to open the door and unlock the tool. In this case, the door lock is broken, and the internal spring of the lock is broken or stuck.

Concerned about surprises

Label: How to maintain the door lock and how to open the problem

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Rane Rails The standard length of the  the rail are  9, 11, 10, 10.5, 9.5, 9.5, 12, 12.5 m.the contract is agreed By the both party of supplyer and buyer ,also noted that supplyer can supply a percentage of the length of 4 m ~ 8.9 m for random length rail. But when calculating the weight according to the 100 mm into the class. the tolerance  for the  length of rail is + 50 0 mm length. shape  the  lateral bending of rail which is not bigger than 1.5 mm bansed on per meter , the total curvature shall not be bigger r than 8 mm. Upper and lower direction of rail bending may not  bigger than 6mm. the  bending  of rail ends is not bigger than 1 mm  within 0.5 m. Because QU120 Crane Rail straightening equipment capacity constraints. The bending degree of agreement by both parties of supplyer and buyer. The rail torsion is not bigger than 1/10,000 of  total length of rail. Rail cross section and the vertical axis of the asymmetric: rail buttom is not bigger than 2 mm, rail head is not bigger than 0.6 mm.At the bottom of the rail should not be recessed. Base on both sides of the central a protruding is not to be bigger than 0.5mm.

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