One, electric hoist hoisting swing reasons (1) The most important thing is inertia. This usually occurs when the run is started and when the run stops. The start and stop in the horizontal direction is greater than the probability and amplitude of the shaking when rising and falling.
(2) If the magnitude of the shaking depends on the magnitude of inertia, then what is the magnitude of the inertia? It is determined by the speed difference. For a single speed, it depends on the speed. For example, at rest, the speed is 0m/nin, and the operating speed is 20m/min. When running horizontally, there will be a jump of 0-20m/min or 20-0m/min when starting and stopping. This will produce chronicity and a speed difference of 20. If the running speed is 5m/min, there will be a jump of 0-5m/min or 5-0m/min when starting and stopping, and the speed difference is 5. The large difference in speed is greater than the slowness of the difference in speed. The shaking is also large. Similarly, the same goes for rising and falling.
(3) In the case of the same speed difference, the longer the sagging chain or the rope, the greater the inertia and the greater the shaking. When the same rated capacity, two electric hoists with the same lifting speed are hoisted separately. When hoisting an electric hoist with a height of 30M, the shaking amplitude is greater than that of an electric hoist with lift heights of 6M and 9M below a lift height of 30M. This point is more obvious under the influence of the external environment, such as in the case of windy conditions.
(4) When two electric hoists of the same type and same specification have the same rated load, the same lifting and speed, and the same lifting height, when hoisting the same object respectively, the more slender electric hoists such as ropes or chains, the greater the shaking rate. . Wire rope electric hoist should not use random ropes, electric hoists with the same rated capacity, the same lifting height, and the same lifting speed, the swing rate of the random ropes is greater than that of rope hoists with rope guides.
(5) In the same electric hoist, if the shape of the suspended object is different, the resulting shaking is also different. In general, electric hoists can only hang objects that have no life and cannot hang people. In fact, it is better not to hang animals. Animals are also alive and alive. They are struggling and moving in the process of lifting. This will create instability in the lifting. Shaking will happen. This kind of shaking is irregular and uncontrollable. It is very dangerous to see overload easily. Relatively speaking, hanging without life is less than life-giving, and it is safer. Even objects that are inanimate to life, irregular in shape, hanging or tied, incompetent, or liquid, have great impact on shaking.
(6) The same electric hoist, when the weight of the object being suspended is different, the resulting shaking is also different. But this is not a good decision. Of course, this is also unavoidable. The electric hoist is originally a lifting object. As long as it is not overloaded, it can be used normally. Therefore, this article is not included.
If you do not want to shake in the electric hoist operation is not possible. There is speed, there is lifting, there is height will shake.
Second, electric hoist lifting to prevent the swing measures suggest that users can proceed from the following aspects, to reduce the shaking as much as possible:
1, speed If it is a single speed, you can use slow speed. However, considering the efficiency of work, but do not want too slow, then choose the frequency conversion.
2, try not to lift heavy objects.
3, do not use too thin ropes and chains, double rope can double rope, double-chain can double. The more rows of ropes and chains, the more stable they are, but the slower this speed is. The multi-rope wire rope hoist body also has a larger volume, so it depends on the situation.
4. The object to be suspended should be as solid as possible and must not exceed the rated capacity of the electric hoist. Do not overfill the liquid. To hang tied tightly.
5, non-double hook or non-synchronous group hoist electric hoist, do not be used for group cranes, to follow the manufacturer's recommendations.
(2) If the magnitude of the shaking depends on the magnitude of inertia, then what is the magnitude of the inertia? It is determined by the speed difference. For a single speed, it depends on the speed. For example, at rest, the speed is 0m/nin, and the operating speed is 20m/min. When running horizontally, there will be a jump of 0-20m/min or 20-0m/min when starting and stopping. This will produce chronicity and a speed difference of 20. If the running speed is 5m/min, there will be a jump of 0-5m/min or 5-0m/min when starting and stopping, and the speed difference is 5. The large difference in speed is greater than the slowness of the difference in speed. The shaking is also large. Similarly, the same goes for rising and falling.
(3) In the case of the same speed difference, the longer the sagging chain or the rope, the greater the inertia and the greater the shaking. When the same rated capacity, two electric hoists with the same lifting speed are hoisted separately. When hoisting an electric hoist with a height of 30M, the shaking amplitude is greater than that of an electric hoist with lift heights of 6M and 9M below a lift height of 30M. This point is more obvious under the influence of the external environment, such as in the case of windy conditions.
(4) When two electric hoists of the same type and same specification have the same rated load, the same lifting and speed, and the same lifting height, when hoisting the same object respectively, the more slender electric hoists such as ropes or chains, the greater the shaking rate. . Wire rope electric hoist should not use random ropes, electric hoists with the same rated capacity, the same lifting height, and the same lifting speed, the swing rate of the random ropes is greater than that of rope hoists with rope guides.
(5) In the same electric hoist, if the shape of the suspended object is different, the resulting shaking is also different. In general, electric hoists can only hang objects that have no life and cannot hang people. In fact, it is better not to hang animals. Animals are also alive and alive. They are struggling and moving in the process of lifting. This will create instability in the lifting. Shaking will happen. This kind of shaking is irregular and uncontrollable. It is very dangerous to see overload easily. Relatively speaking, hanging without life is less than life-giving, and it is safer. Even objects that are inanimate to life, irregular in shape, hanging or tied, incompetent, or liquid, have great impact on shaking.
(6) The same electric hoist, when the weight of the object being suspended is different, the resulting shaking is also different. But this is not a good decision. Of course, this is also unavoidable. The electric hoist is originally a lifting object. As long as it is not overloaded, it can be used normally. Therefore, this article is not included.
If you do not want to shake in the electric hoist operation is not possible. There is speed, there is lifting, there is height will shake.
Second, electric hoist lifting to prevent the swing measures suggest that users can proceed from the following aspects, to reduce the shaking as much as possible:
1, speed If it is a single speed, you can use slow speed. However, considering the efficiency of work, but do not want too slow, then choose the frequency conversion.
2, try not to lift heavy objects.
3, do not use too thin ropes and chains, double rope can double rope, double-chain can double. The more rows of ropes and chains, the more stable they are, but the slower this speed is. The multi-rope wire rope hoist body also has a larger volume, so it depends on the situation.
4. The object to be suspended should be as solid as possible and must not exceed the rated capacity of the electric hoist. Do not overfill the liquid. To hang tied tightly.
5, non-double hook or non-synchronous group hoist electric hoist, do not be used for group cranes, to follow the manufacturer's recommendations.
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