Horizontal pulled gate bottom trolley with rolling wheels of self-lubricating bearing structure

Abstract

The invention discloses a horizontal pulled gate bottom trolley with rolling wheels of a self-lubricating bearing structure. Every two sets of rolling wheel parts are installed on a frame; the left frame and the right frame are connected into an overall framework of the bottom trolley through a frame beam; a gate body is located on roller parts of the bottom trolley through arc-shaped base plates; the roller parts transversely move under water pressure to complete attaching leaning and water stoppage; the left rolling wheel parts and the right rolling wheel parts travel along bottom rails laid in a groove lower than a doorsill in parallel so that the gate body can travel forwards and backwards along the bottom rails to be opened and closed; the four sets of rolling wheel parts are of the same structure; each rolling wheel part comprises a rolling wheel, a rolling wheel shaft, a self-lubricating bearing and self-lubricating bearing sealing covers; the rolling wheels are installed on the frames through the rolling wheel shafts; the self-lubricating bearings are arranged between the rolling wheels and the rolling wheel shafts; and the two ends of each self-lubricating bearing are sealed through the corresponding self-lubricating bearing sealing covers. The structure is simple, the manufacturing cost is reduced, the horizontal pulled gate bottom trolley is easy to maintain and even is free of maintenance, and the defects of underwater use of roller bearings in the prior art can be totally overcome.

Description

technical field [0001] The invention relates to a bottom trolley for a horizontally drawn gate with a self-lubricating bearing structure for its rollers, and belongs to the technical field of ship lock gates for navigable buildings. Background technique [0002] The working gates of ship locks that bear two-way water head mainly include horizontal pull gates and triangular gates. Compared with the triangular gate, the outstanding advantages of the horizontal pull gate are: the force of the gate is intuitive and reasonable; the structure of the gate body is simple and rigid; the impact resistance of ships is good; Therefore, the current national standard "Code for Design of Ship Lock Valves" (JTJ308-2003) stipulates that horizontal pull gates should be used for working gates that withstand two-way water heads and are opened and closed under still water conditions. Especially in ship locks with large spans, high water head differences and special attention to the major safety...

AI Technical Summary

Problems solved by technology

However, the normal use of rolling bearings requires good thin oil or grease lubrication. It is used in the bottom trolley rollers under water. At present, it is difficult to have a relatively economical sealing technology to ensure that water containing sediment will not enter the rolling bearing cavity sooner or later. Once it enters, Under the action of water and sand, the rolling bearing will soon fail, and then bring about a chain reaction, which eventually leads to the situation that the bottom trolley has to be replaced in two to three years

Images