LDA型电动单梁起重机
LDA型电动单梁起重机是在“LD”的基础上进行设计改进的，较“LD型”具 有结构合理，整机刚性强的特点。本系列起重机所配电动葫芦有两种型号:CD1型,起升速度8m/min;MD1型为双葫芦,起升速度为8m/min和0.8m/min，是一种轻小型的起重机机械,其起重量为1t-10t。跨度为7.5-22.5m，工作级别为A3-A5，工作环境温度为-25-40oC。
本系列起重机适用于金工车间,装配车间,维修车间和各类仓库及其它场合,也可用于冶金,铸造车间作辅助吊运.考虑防风,防雨要求并改进设计后,也可用于露天场合.本系列起重机均使用三相380V,50Hz电源.
本系列起重机不太适合以下工作环境.
A,有爆炸危险和火灾危险的环境.
B,相对湿度大于85%的场所和充满腐蚀性气体的环境
C,吊运熔化金属,有毒产品和易燃易爆物品.
本产品设有地面和操作室两种操作形式。 操纵室有开式、闭式两种，可根据实际情况分为左或右面安装两种形式，入门方向有侧面及端面两种，以满足用户在各种不同需要的情况下进行选择。
Operation rules of double beam bridge crane
1 before work
A. on the brake, hook, wire rope and safety devices and other components according to the requirements of inspection inspection, found abnormal phenomenon, should be excluded.
The B. operator must confirm the catwalk or orbit unmanned, before closing the main power supply. When the power supply circuit breaker locking or sign, should take relevant people from the rear closing the main power supply.
2 work
The A. class first lifting weights (or load reached the maximum weight), should be lifted from the ground height of 0.5 meters, the weight down again, check the brake performance, the confirmation of reliable, then normal operation.
The B. operator in the operations, according to the provisions of the following operation rang alarm.
The hoisting, landing weight; start big, car driving.
The crane traveling in the line of sight is not clear through, to continuous rang alarm;
The crane span running close to another machine.
The lifting weights personnel.
According to the unified command signal shall C. operation.
Sudden power D. work, should be the controller handle at "all zero", return to work should be checked before crane movement is normal.
C. crane, trolley in normal operation, is strictly prohibited on anti vehicle parking brake; transform, motion direction, must handle in "zero", make the mechanism stops completely, can reverse drive.
D. has two hook crane, in the main, auxiliary hook and the two hook height change with time is similar, main, auxiliary hook must work independently to avoid collision, two hook.
The crane not E. two hooks two hook and hanging two objects; do not work in the case of hoisting mechanism brake adjustment.
F. no use limit position for parking, is strictly prohibited in the case of a load of hoisting mechanism brake adjustment.
G. strict implementation of the "ten not hanging" system:
The command signal is not unknown or arbitrary command;
Don't hang the rated lifting weight more than;
The sling used unreasonable or not in prison without hanging the hanging object bundle;
The hanging on someone or other floating objects are not;
The brake or other braking safety device failure;
Without lifting the vehicle weight hanging directly processing;
The slanting pull over not hanging;
The explosive objects without hanging;
The buried object does not pull the crane;
The angular piece of export objects, not pad is hanging;
H. such as abnormal, immediately shut down, check the reason and excluded in a timely manner.
3 after work
A. will hook up to a certain height, cart, car parked in the designated position, the controller handle at "zero" position; pull off protective box switch handle, cut off the power supply.
B. daily maintenance.
C. do shift work.
Crane operation 4 single girder bridge
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