Parallel-move hoistable platform without self-locking

Abstract

The invention discloses a non self locking translational elevating platform, which mainly solves the self locking problem of a translational elevating platform. The invention has the technical proposal that central connecting rods are also respectively arranged on parallelogram mechanisms symmetrically arranged on the both sides of a basic platform, the central connecting rod is parallel to the upper side and the lower side of the parallelogram mechanism, a front connecting rod is hinged at the front end of the central connecting rod, a hinge point is positioned at the lower part of the center high point of the front connecting rod, a rear connecting rod is hinged at the rear end of the central connecting rod, and the hinge point is positioned at the lower part of a rear hinge point of a rear hinge seat, and the invention is applied to different ship translational elevating platforms.

Description

Technical field [0001] The invention relates to a device for loading and unloading cargo on a ship, in particular to a device that basically combines horizontal and vertical transportation. Background technique: [0002] On ships, when the cargo needs to be delivered from the storage compartment to the cargo receiving platform set up on the deck, usually after opening the hatch cover of the storage compartment, the cargo is sent to the loading and unloading platform of the lift, and then the loading and unloading platform is lifted by the lift To the hatch, there is generally a certain horizontal and vertical distance between the hatch and the cargo receiving platform, which is about 1-2 meters. For example, the corresponding horizontal and vertical mechanical transportation equipment is set on the deck. Not only is it difficult for these equipment to perform its effectiveness efficiently, but it also complicates the overall layout of the deck. The previous solution to this probl...

AI Technical Summary

Problems solved by technology

[0002] On a ship, when the cargo needs to be delivered from the storage cabin to the cargo receiving platform set on the deck, the cargo is usually sent to the loading and unloading platform of the elevator after opening the hatch cover of the storage cabin, and then the loading and unloading platform is lifted by the elevator To the hatch, there is generally a certain horizontal and vertical distance between the hatch and the cargo receiving platform, the distance is about 1-2 meters, such as setting up corresponding horizontal and vertical mechanical transportation equipment on the deck , not only is it difficult for these devices to exert their effectiveness efficiently, but it will also complicate the overall arrangement on the deck. The previous method to solve this problem is to rely on manpower or manpower supplemented by simple non-fixed handling tools to move the goods from the main The deck hatch is transported to the cargo receiving platform. However, when the size and weight of the cargo are large, the labor intensity of the operator is extremely high, and the transshipment efficiency is extremely low, especially in the case of a large transport volume. , the process of manpower transfer, especially when the ship is sailing, the characteristics of the ship's sway will seriously affect the safety of personnel and cargo. For this reason, the industry has proposed a technical solution for the translational lifting platform, which is characterized by It consists of a parallelogram mechanism, which is driven by an oil cylinder, and the expansion and contraction of the piston rod of the oil cylinder enables the platform to realize lifting and translation movements, and completes the horizontal translation and vertical lifting of the goods and transports them to the goods receiving platform. As we all know, the parallelogram mechanism is in Due to the influence of friction and other factors during the movement, there is a self-locking angle, that is, the design requires that the starting angle of the parallelogram movement mechanism should be greater than the self-locking angle, otherwise the mechanism will be in a self-locking state and cannot be started. The lifting platform is the best solution to improve the efficiency of cargo transportation on the deck, and the parallelogram mechanism of the platform has a large self-locking angle, and its overall structural size is large, while the space size and height on the ship are strictly limited, requiring parallel The starting angle of the quadrilateral mechanism should not be too large, and sometimes even require the starting angle to be zero degrees. The above-mentioned contradictions have become a difficult problem for ships to improve the transfer efficiency on deck

Images