A lifting drive mechanism and device

Abstract

The invention belongs to the field of flagpole design, production, installation and construction, and specifically relates to a lifting drive mechanism and device, including a hollow rod body, a winch is arranged at the bottom of the hollow rod body, a first cable body is connected to the winch, and the free end of the first cable body is connected from the hollow rod body. The inside of the rod body is inserted from bottom to top to the top of the hollow rod body, and the free end is connected to a hanger around the fixed pulley provided on the top of the hollow rod body; there is also a second cable body inside the hollow rod body, and at least part of the second cable body Magnetic units are arranged at intervals on the upper part, the part of the first cable body located in the hollow rod body is arranged adjacent to the section on the second cable body where the magnetic unit is installed, and the first cable body is made of ferromagnetic material, the lower guide wheel and the winch Drive connection. The present invention distributes a part of the power of the winch to the second cable body, uses the magnetic attraction unit on the second cable body to attract the first cable body, and then uses the rotation of the second cable body to pull the first cable body upward, which is very good The self-gravity of the first cable body is overcome to ensure that the hanger can descend stably.

Description

technical field [0001] The invention belongs to a lifting device, and in particular relates to a lifting driving mechanism and a device. Background technique [0002] The automatic lifting flagpoles in the prior art generally have the following driving modes: [0003] External drive type, such as the Chinese invention patent No. CN201811323492.2 "A Lifting and Raising Flag Device with Automatic Positioning Function", which includes two upper and lower pulleys set outside the flagpole, and ropes are set between the pulleys, and the flag passes directly The hanger is hung on the rope. This driving method is the simplest, but the defects are also obvious: one is that the rope itself is elastic, so it cannot be reliably restrained on the hanger, resulting in a relatively large swing of the hanger. The fit with the flagpole is poor; the second is that the driving mechanism is exposed outside, which is easy to be rusted, worn or damaged maliciously. [0004] Built-in drive type,...

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Problems solved by technology

[0003] External drive type, such as the Chinese invention patent No. CN201811323492.2 "A Lifting and Raising Flag Device with Automatic Positioning Function", which includes two upper and lower pulleys set outside the flagpole, and ropes are set between the pulleys, and the flag passes directly The hanger is hung on the rope. This driving method is the simplest, but the defects are also obvious: one is that the rope itself is elastic, so it cannot be reliably restrained on the hanger, resulting in a relatively large swing of the hanger. The fit with the flagpole is poor; the second is that the driving mechanism is exposed outside, which is easy to rust, wear or be damaged maliciously

[0004] Built-in drive type, such as the Chinese invention patent of CN200910102840.8 "A Universal Flagpole with Automatic Lifting and Windless Self-blowing Flag", its drive structure is roughly the same as that of the external drive type flagpole, the difference is that its drive parts are hidden in the Inside the flagpole, the advantage of this driving method is that it can make the driving mechanism more concealed and at the same time effectively limit the hanger, but the disadvantage is that it is necessary to open a gap on the flagpole to avoid the flag lifting path, and the cover gap runs through the entire flagpole. On the one hand, it affects the appearance, on the other hand, rainwater is easy to seep into the flagpole and cause the driving components to rust

[0005] Open-loop driving type, such as the Chinese invention patent "Flag Pole Lifting and Lifting Mechanism" with the patent number CN201010042857.1, which includes a driving part arranged at the bottom of the flagpole and a transmission element arranged at the top of the flagpole. The traction rope is an open-loop structure. One end is connected to the chain, and the other end is connected to the hanger. The chain is used to drive the hanger up and down. The advantage of this driving method is that there is no need to open a gap on the flagpole, and it can ensure the concealment of the driving mechanism. But the disadvantage is that the traction rope is Open-loop structure, so the chain can only drive the pull rope inside the flagpole to pull down, and when the flag needs to be lowered, the pull rope inside the flagpole can only be released outward by the gravity of the hanger. At this time, almost all sections of the pull rope are on the flagpole Internally, the gravity of the traction rope itself will offset part of the gravity of the hanger, which requires that the hanger must have enough weight to ensure the smooth lowering of the flag, which indirectly increases the load and improves the energy consumption of the equipment; The lower end of the hanger is reliably restrained, and there is also the problem of the swing of the hanger

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