Selflubricatingpiston staircase revolution chain
Technical field
The utility model relates to chain, relates in particular to a kind of selflubricatingpiston staircase revolution chain.
Background technology
The joint of existing escalator revolution chain all is to adopt antifriction-bearing box, because antifriction-bearing box need contain ability normal operation under the lubricated oil condition, but because the restriction of workplace, can not often refuel to antifriction-bearing box, this just causes revolution chain antifriction-bearing box oil starvation, undue wear occurs and the phenomenon damaged; In using, goes back by the revolution chain because handrail and rail friction produce a large amount of abrasive dusts and dust, these abrasive dusts and dust can enter into the revolute pair in joint, to the normal operation of antifriction-bearing box with brought service life and seriously influence, the problem that also can lose efficacy at the antifriction-bearing box of outdoor operation because of getting rusty, can occur noise after antifriction-bearing box work a period of time strengthens even stuck phenomenon, the serious handrail wearing and tearing that cause aggravate, the whole drive system load increases, bulk life time reduces, and must change revolution chain or handrail usually to guarantee the normal operation of escalator about 5 years.
The utility model content
The purpose of this utility model be to provide a kind of simple in structure, use cost is low, stable drive, little, the long service life of noise, operation and maintenance is selflubricatingpiston staircase revolution chain easily.
In order to achieve the above object, the technical scheme of selflubricatingpiston staircase revolution chain is: it includes the chain link that several plastics are made, chain link composes in series the revolution chain through chain-link pin, it is characterized in that being shaped on the axis hole vertical with the link center line in the side of chain link, the axis of rolling that stretches out the chain link two sides is installed in the axis hole, two ends at the axis of rolling are fixed with roller, and the selflubricatingpiston plain bearing is installed between the axis of rolling and chain link, and the axis of rolling rotates relative to the selflubricatingpiston plain bearing.Can also be shaped on the radius stay that stretches out in the two sides of chain link, the outer face that radius stay stretches out is a little more than the outer face of roller.An end face of described selflubricatingpiston plain bearing is shaped on flange, and the selflubricatingpiston plain bearing has two symmetries to install.
Selflubricatingpiston staircase revolution chain according to said structure has the selflubricatingpiston plain bearing in the rotary part design, and this selflubricatingpiston plain bearing does not in use need apply lubrication oil, and it is long-term normal operation under the situation of environment very severe.The defective that this revolution chain has successfully solved the long-standing noise of original rolling revolving chain and lacked service life, its high performance can satisfy the service life more than 10 years.
Description of drawings
Fig. 1 is the front view of chain link;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the front view of selflubricatingpiston staircase revolution chain;
Fig. 4 is the enlarged front view of selflubricatingpiston plain bearing.
Among the figure: 1, chain link; 2, chain-link pin; 3, revolution chain; 4, link center line; 5, axis hole; 6, the axis of rolling; 7, roller; 8, selflubricatingpiston plain bearing; 9, radius stay; 10, flange.
The specific embodiment
The utility model will be further described below by embodiment.
The structural representation of Fig. 1, Fig. 2 selflubricatingpiston staircase revolution chain.It includes the chain link 1 that several plastics are made as seen from the figure, chain link 1 composes in series revolution chain 3 as shown in Figure 3 through chain-link pin 2, be shaped on the axis hole 5 vertical with link center line 4 in the side of chain link 1, the axis of rolling 6 that stretches out chain link 1 two sides is installed in the axis hole 5, be fixed with roller 7 at the two ends of the axis of rolling 6, between the axis of rolling 6 and chain link 1 selflubricatingpiston plain bearing 8 is installed, the axis of rolling 6 rotates relative to selflubricatingpiston plain bearing 8.Be shaped on the radius stay 9 that stretches out in the two sides of chain link 1, the outer face that radius stay 9 stretches out is a little more than the outer face of roller 7.An end face of described selflubricatingpiston plain bearing 8 is shaped on flange 10 as shown in Figure 4, and selflubricatingpiston plain bearing 8 has two symmetries to install.