A multi-link connecting device with multi-angle adjustment and locking

Abstract

The invention discloses a multi-angle adjustable and locked multi-link connecting device in mechanical equipment. The lower ends of the connecting rods are all ball heads, and the upper ends are cylindrical bosses. The center of the upper surface of the cylindrical boss of the first connecting rod is There is a first spherical groove with an inner diameter equal to the outer diameter of the second ball head of the second connecting rod, and the upper surface of the cylindrical boss is coaxially fixed with a connecting rod cover in the shape of a connecting ring, and the central hole of the connecting rod cover is coaxially tight. There is a ring-shaped bearing. The bearing is composed of two identical semi-annular bodies radially coupled. The middle of the bearing shell of each semi-annular body has a semi-circular arc-shaped groove in a semi-circular shape. The interior is equipped with permanent magnets, bearing springs and electromagnets from the inside to the outside. The two permanent magnets are radially magnetized and the magnetization directions are opposite; in the initial state, the two permanent magnets absorb and lock the second ball head, and the connecting rod needs to be adjusted When the angle is specified, the coil of the electromagnet is energized, and the two permanent magnets release the second ball head, so that the multi-angle adjustment of the multi-link structure is realized, and the disassembly is convenient.

Description

technical field [0001] The invention relates to a connecting device in mechanical equipment, in particular to a multi-link connecting device which can freely adjust the angle and be locked. Background technique [0002] The connection devices in traditional mechanical equipment can be seen everywhere in daily life, such as computer brackets and the shaking mechanism of fans, but there are often a series of problems such as electrical failures and high costs. Although these common mechanisms can meet the needs of daily life, they often face problems such as overly complex mechanical structures, inconvenient installation, and complicated manual repair costs, especially for connection devices in heavy industries, such as excavators. Grabbing the head, etc., not only requires a flexible control mechanism but also requires a connection device to carry heavy objects. [0003] At present, the connecting devices commonly used between connecting rods are divided into welding or trad...

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Problems solved by technology

[0002] The connection devices in traditional mechanical equipment can be seen everywhere in daily life, such as the computer stand and the shaking head mechanism of the fan, but there are often problems such as a series of electrical failures and high costs

Although these common mechanisms can meet the needs of daily life, they often face problems such as overly complex mechanical structures, inconvenient installation, and complicated labor repair costs, especially for connecting devices in heavy industries, such as excavators. Grabbing heads, etc., not only require a flexible control mechanism but also require a connection device for carrying heavy objects

[0003] At present, the connection devices commonly used between connecting rods are divided into welding or traditional mechanical connection, but welding will fix the position between the connecting rods, and the angle cannot be changed, resulting in the movement of the connecting rods is not flexible enough, and the welding process requires high requirements. Improper use will lead to a decrease in the bearing capacity of the connecting rod structure

Therefore, a freely controllable mechanical connection is considered a better choice. For example, a double ball-joint link connection device for the connection of the adjustable bracket of the lamp disclosed in the document of Chinese Patent Application No. 201410449778.0, although it reduces The volume of the connecting device is reduced, and the rotation adjustment of the connecting rod device can be realized, but the mechanism is locked by the friction between the connecting rods, it is not easy to carry heavy objects, and the complex structural design also leads to difficulties in installation and maintenance

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