CN202273360U - Wave-shaped stairs - Google Patents

Abstract

The utility model relates to stairs, in particular to wave-shaped stairs, which are formed by combining a plurality of intermediate flat sections and a plurality of raised units alternately. The wave-shaped stairs are characterized in that: each raised unit consists of a downgrade stair step on one side and an upgrade stair step on the other side; in each raised unit, the number of the downgrade stair steps is 2 to 4 steps more than that of the upgrade stair steps, and the number of the upgrade stair steps is more than or equal to 2 steps; and the longitudinal length of each intermediate flat section is more than or equal to 600 millimeters. The wave-shaped stairs can effectively reduce the speed of a pedestrian who goes downstairs and support the pedestrian who falls down to stand up quickly, so that trampling accidents are prevented.

Description

The waveform stair

Technical field

The present invention relates to a kind of stair, particularly relate to a kind of waveform stair.

Background technology

Often trample accident on the teaching building stair in campus, as: evenings 8 on October 25th, 2005 point, Tongjiang County, Bazhong City, Sichuan Province is extensively received primary school and is crowded and trample in the accident, 8 student's death, 17 students are injured; At the beginning of 2005 11 months, tread event when student's stair activity takes place in Haozhou, Anhui city Qiaocheng District secondhand clothes or clothes badly tailored and of poor material primary school, 12 people are injured; Xiangxiang City, Hunan Province in 2009 school of cultivating people of ability takes place after 8 people are dead, 26 people are injured student tramples accident, and Xiangxiang City responds actively, and in time gives treatment to the injured student, carries out student died in an accident's aftermath, and strictly handles the accident responsibility people; 11: 50 Beijing time of on November 29th, 2010, when the student goes downstairs during the setting-up exercises during the break of Xinjiang Uygur Autonomous Regions's Aksu City the 5th primary school,, cause the accident of trampling because the student in front falls down, cause 41 students injured, wherein severely injured 7 people, slight wound 34 people.

Why do the stair in campus trample accident time and again? Trace it to its cause mainly as follows:

The existing teaching building slope of stairs is steeper, and adolescent student is in the growth stage, and nature are active, and the jump of liking running is excessive at the process medium velocity of going downstairs.Therefore in setting-up exercises during the break or classes are over time, the visitors flowrate density on the stair is considerably beyond the people's current density normal the time, and the number of student through the unit length stair in the unit interval is more; In the process that the intensive stream of people goes downstairs fast, in case there is the people to fall, because the place ahead does not have any measure that stops; Under the stream of people's in the wings the pushing, the people who falls does not have the chance that regains one's feet again, becomes back crowd's stumbling-block simultaneously yet; Cause falling of more people, thus the accident of trampling.

The generation time and again of the accident of trampling of the stair in campus; Be enough to cause the attention of the Ministry of Education and each campus administrative department; But existing preventive action only are to prevent the generation of the accident of trampling through " safety management ", " safety inspection " and methods such as " safety educations ", do not have solid technological means and eliminate the potential safety hazard that causes tread event.

Summary of the invention

The present invention is for solving the deficiency of prior art, the waveform stair that provide a kind of peak period of can on the student, going downstairs to avoid the accident of trampling to take place.

The scheme that solves the utility model technical problem is: the waveform stair are combined by the flat section in a plurality of centres and a plurality of protuberance units alternately.Each protuberance unit was made up of the descending ladder step of a side and the upward slope ladder step of opposite side.In each protuberance unit, the terraced step number than the ladder step of going up a slope in descending ladder step manys the 2-4 step, and the terraced step number in the ladder step of going up a slope was no less than for 2 steps.The longitudinal length of flat section is not less than 600mm in the middle of each.

Adopt such scheme, can reach following beneficial effect:

1. because the utility model equals section by a plurality of centres and a plurality of protuberance units alternately combines; So just vertical direction with the route of pedestrian's stair activity by original along stair longitudinally rectilinear direction change the waveform slalom course of vertical direction into; Such design; Force the pedestrian in the process of going downstairs, need constantly to change the force method of shank, reduce the go downstairs effect of speed of pedestrian thereby played.

2. the middle existence of putting down section and protuberance unit slows down total gradient of stair significantly, has avoided the generation of traditional stair because of the big accident of trampling that causes of the gradient.

3. in the process of going downstairs, the pedestrian is if fall, and what can rely on that upward slope ladder in the protuberance unit goes on foot stops and support rapidly and stand up, and makes the pedestrian who falls can under the stream of people's extruding, not continue to roll to the stair lower; Constituted the speed limit unit of " bowl type " between the upward slope ladder step of two adjacent protuberance unit and descending ladder step; Even many people are taken place to fall; Also can be limited in the speed limit unit of " bowl type ", thus the chain accident of trampling of " snowball " type of avoiding the pedestrian because of accident origination point below to fall in succession and produce.

Description of drawings

Fig. 1 is the plane structure sketch map of the utility model;

Fig. 2 is the A-A sectional drawing of Fig. 1.

Among the figure: 1. flat section 2. is gone up a slope the 3. descendings ladder step in ladder step in the middle of

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.

The waveform stair are combined with a plurality of protuberance units alternatelies by the flat section 1 in a plurality of centres.Each protuberance unit was made up of the descending ladder step 3 of a side and the upward slope ladder step 2 of opposite side.In each protuberance unit, the terraced step number than the ladder step 2 of going up a slope in descending ladder step 3 manys the 2-4 step, and the terraced step number in the ladder step 2 of going up a slope was no less than for 2 steps.The longitudinal length of flat section 1 is not less than 600mm in the middle of each.

Claims (1)

1. waveform stair; Combine by the flat section in a plurality of centres and a plurality of protuberance units alternately; It is characterized in that: each protuberance unit was made up of the descending ladder step of a side and the upward slope ladder step of opposite side, and in each protuberance unit, the terraced step number than the ladder step of going up a slope in descending ladder step manys the 2-4 step; The terraced step number that the ladder that goes up a slope goes on foot was no less than for 2 steps, and the longitudinal length of flat section is not less than 600mm in the middle of each.