Heavy object supporting mechanism and heavy object loading device using the heavy object supporting mechanism

Abstract

In supporting a heavy load with a spring member disposed between a fixed frame and a support frame, provided are a follower member that transfers a spring force of the spring member to the support frame, first and second cam surfaces that regulate motion of the follower member, and a biasing device for bringing the follower member into press-contact with the cam surfaces, the first cam surface generates a friction force to reduce an effect of the heavy load, the second cam surface generates a friction force to reduce an effect of the spring force, and the follower member is made movable in an expansion / contraction direction of the spring, and also in a direction crossing the expansion / contraction direction to control engagement of the follower member and the cam surfaces.

Description

technical field [0001] The invention relates to a heavy object support mechanism for loading or suspending heavy objects, and relates to the improvement of the support mechanism for stably maintaining the heavy objects at a specified height position. Background technique [0002] This kind of device is generally composed of a loading platform for loading heavy objects, an installation base for installing the device on the floor, and a lifting mechanism that connects the installation base and the loading platform at a specified height position. Devices arranged at defined height positions are known. [0003] For example, Patent Document 1 discloses a support mechanism for positioning and maintaining a monitor device at a predetermined height. In this document, the loading table loaded with monitors and other heavy objects is connected with the mounting frame supported on the floor at the height position of the loading table in a manner that the height position can be adjuste...

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Problems solved by technology

[0012] Therefore, if the inclined cam surface arranged in the direction of gravity is made into a gentle shape, the size of the device will be enlarged in the width direction.

And if the elastic force of the spring is set to be large, the spring length of the spring is designed to be long, which will cause the enlargement of the device.

In this way, not limited to the device of Patent Document 1, the existing device acts on a loading member that supports a heavy object by adjusting the elastic force of a spring with a cam surface, so it is known that if the heavy object is kept at a stable height position while the heavy object becomes If the bit capacity is large, there is a problem of increasing the size of the device

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