Lift-type load turning devices

Lift-type load turning devices
Lift-type load turning devices

| Lift-type load turning devices

description:
ift-type load turning devices for turning workpieces and crane boom production lines:In the field of mechanics, for example during scribing, welding, grinding, etc., it is often necessary to turn the
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Apr 02,2022
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Lift-type load turning devices for turning workpieces and crane boom production lines
In the field of mechanics, for example during scribing, welding, grinding, etc., it is often necessary to turn the workpiece over in order to be able to machine the opposite surfaces of the workpiece. For example, as far as the processing of the box-shaped boom, which is widely used in truck cranes, is concerned, it is necessary to weld the upper and lower cover plates to the left and right side plates to form the box-shaped boom. During the welding operation, when the welding operation on one side of the jib is completed, the cylinder of the jib needs to be turned over to carry out the welding work on the other side. It should be noted here that the above-mentioned "box-shaped boom" is only a technical term in the field of cranes, which mainly means that the boom is formed as a "simplified boom", that is, the cross-section of the boom is a closed section, but it is not It does not mean that the cross-section of the boom is a standard rectangular section. In practical applications, the cross-section of the box-shaped boom is trapezoidal, and the upper cover part is arc-shaped. It is widely used in truck cranes. The telescopic boom is connected by a simplified set of multiple booms.
The following mainly takes the simplified truck crane boom as an example to describe the situation of turning the workpiece in the prior art. It should be noted that although the simplified truck crane boom is only used as an example for description, other workpieces in the prior art The flipping situation is also similar. When these workpieces are flipped, they basically use a flipping device similar to the following jib, that is, they are mostly dragged by spreaders and cranes (such as bridge cranes commonly used in workshops, that is, bridge cranes). To achieve flip, see below for details.
As far as the production of the truck crane boom is concerned, the current manufacturing of the boom structure (ie, the simplified boom) has become one of the bottlenecks for the improvement of the manufacturing efficiency of the truck crane. One of the main reasons for the inefficiency of welding of welds. At present, the main welds on both sides of the simplified boom require flat welding, which requires that the simplified boom must be placed on the side and can be flipped over quickly and easily to weld the main welds on the opposite sides. This is similar to other types of workpieces, where after machining one side of the workpiece, it needs to be turned over to machine the other side. 

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