CN2188127Y

CN2188127Y - Wind-proof span-lengthening type fire rolling blind

Info

Publication number: CN2188127Y
Application number: CN 94205816
Authority: CN
Inventors: 周中英
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-26
Filing date: 1994-03-26
Publication date: 1995-01-25
Anticipated expiration: 2004-03-26

Abstract

The utility model discloses a wind-proof span-lengthening type fire rolling blind, which is composed of a guide rail and blades. A roller shaft is fixed on the blades. The roller shaft is equipped with a roller. The guide rail is a combined guide rail which is composed of a front part and a back part. The size of the side openings of the guide rail is smaller than the diameter of the roller. Two ends at the side openings of the guide rail are rolled up inwardly, forming circular symmetry. The blades don't contact with the guide rail. The rolling blind can enter the guide rail steadily, which reduces abrasion and noise. In the situation that thickness of material and structure size of the blades are not increased, the wind-proof strength of the blades can be reinforced, and the span of the rolling blind can be enlarged. The utility model can avoid phenomenon of draw cast when the blades deform due to wind pressure and a fire.

Description

Wind-proof span-lengthening type fire rolling blind

The utility model relates to a kind of roller shutter, particularly a kind of windproof fire curtain of striding that increases.

Existing windproof, fire curtain comprises insulation and heavy anti-theft rolling blind, all be to rely on the structural strength of curtain sheet and the depth of engagement of increase curtain sheet and guide rail to prevent roller shutter, thereby when making the large span roller shutter, be restricted owing to bear the load of wind-force and the lot phenomenon of the generations such as roller shutter distortion that fire causes.Simultaneously,,, except rail end is made the garden arc-shaped transition, on the basis of original directive wheel, to increase guiding and pay wheel because the importing guide rail that the roller shutter diameter variation causes is not smooth in order solving.Because of stressed big, the also corresponding increase of physical dimension, expense also increases.The direct planar friction of curtain sheet and guide rail causes curtain sheet and way rub distortion, and simultaneously, blast sends very big noise when changing.

The purpose of this utility model provides a kind of steering capability that can improve roller shutter, noise-decreasing and vibration, under the situation of material thickness that does not increase the curtain sheet and physical dimension, strengthen the rated wind velocity of curtain sheet, enlarge roller shutter and make span, avoid the windproof straddle type fire curtain that increases of roller shutter generation lot phenomenon.

The utility model is realized as follows: a kind of windproof straddle type fire curtain that increases, form by guide rail and 1 curtain sheet 5, it is characterized in that: be fixed with roller shaft 4 on the curtain sheet 5, be equiped with roller 2 on the roller shaft 4, the side opening size of guide rail 1 is less than the diameter of roller 2.

The inside turnup of the circular symmetry in two ends at guide rail 1 side opening place.

The utility model does not contact with guide rail owing to roller shutter, when being subjected to blast, roller shutter friction and bump, owing to be provided with roller, roller shutter can enter guide rail reposefully, move unobstructed up and down, reduce wearing and tearing and noise, reduced transmission mechanism intensity and transmission power, increased rated wind velocity, save raw material, the phenomenon that can prevent to draw lots takes place.

Fig. 1 is that the master of the utility model embodiment looks schematic diagram.

Fig. 2 is that schematic diagram is looked on the left side of the utility model embodiment.

Fig. 3 is an A-A cross-sectional schematic shown in Figure 1;

Fig. 4 is that A shown in Figure 3 is to view.

Below in conjunction with drawings and Examples the utility model is further described:

With reference to accompanying drawing, a kind of windproof straddle type fire curtain that increases is made up of guide rail 1 and curtain sheet 5, it is characterized in that: be fixed with roller shaft 4 on the curtain sheet 5, be equiped with roller 2 on the roller shaft 4, the side opening size of guide rail 1 is less than the diameter of roller 2.

Roller shaft 4 welderings (or) rivet clasp is on curtain sheet 5, convenient for technology, roller shaft 4 can be made into eccentric shaft, and roller 2 is installed on the roller shaft 4, is placed restrictions on by the packing ring 3 that is welded on the roller shaft 4.Guide rail 1 can constitute composite guideway by front and back two parts, and is middle with riveting or solid welding connection.Because the diameter of roller 2 is greater than the side opening size of guide rail 1, big blast appears in the guide rail 1 side opening place inside circular turnup in end in addition and because during roller shutter distortion that fire causes, roller 2 will block at guide rail 1 side opening place, the phenomenon of drawing lots can not occur.The quantity of roller 2 can determine that specifically guide rail 1 and curtain sheet 5 can be manufactured with the steel band of same thickness according to the length and the span of roller shutter.

Claims

1, a kind of windproof straddle type fire curtain that increases is made up of guide rail [1] and curtain sheet [5], it is characterized in that: be fixed with roller shaft [4] on the curtain sheet [5], be equiped with roller [2] on the roller shaft [4], the side opening size of guide rail [1] is less than the diameter of roller [2].

2, the windproof straddle type fire curtain that increases according to claim 1 is characterized in that: the inside turnup of the circular symmetry in two ends at guide rail ［ 1 ］ side opening place.