CN2167734Y

CN2167734Y - Lifting device for wrecking

Info

Publication number: CN2167734Y
Application number: CN 93243790
Authority: CN
Inventors: 黄福常
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-09
Filing date: 1993-11-09
Publication date: 1994-06-08
Anticipated expiration: 2003-11-09

Abstract

The utility model relates to a lifting device for wrecking used for accidents in high-rise buildings and in mines, which comprises a frame (1), a bearing (2), a driving shaft which is composed of the lifting shaft of the driving shaft (3) in a minor diameter d and the falling shaft of the driving shaft (4) in a major diameter D, a strong rope (5), a movable pulley (6), and an article carrier (7). When wrecking, people and objects enter the article carrier (7), the driving shaft is rotated by the weight of the people and the objects, the strong ropes (5) twines around the lifting shaft of the driving shaft (3) upwards, and the falling shaft of the driving shaft (4) releases the strong rope (5) downwards. Because of d< D and same angular velocity, the people and the objects in the article carrier fall at a uniform speed to ground or a safety platform. The utility model has the advantages of simple structure, low cost, and easy and reliable use.

Description

Lifting device for wrecking

The utility model relates to a kind of usefulness and is higher than the lowering or hoisting gear that skyscraper, mine burst accident are recovered.

At present, the lowering or hoisting gear that is used for skyscraper, mine both at home and abroad is generally elevator and lift, and under normal circumstances, they all drive with electric power or machine power.When skyscraper or mine breaking out of fire, power supply is blocked disconnected, elevator definitely can not be opened, the people is trapped in the building, especially the people in the high-rise building have little time to go to roof mostly from stair safety mouth downstairs, and this moment, fire fighting truck was not as arriving in the very nick of time, must cause injures and deaths, also be difficult at short notice trapped personnel all in time be rescued even the fire-fighting emergency car of band lift is arrived in.For the needs that fire-fighting is recovered, people wish to utilize a kind of simple device when the breaking out of fire accident, and oneself rescues oneself, leaves the fire danger zone as early as possible.But under the situation that skyscraper is numerous at present, this device is not still seen, and various machine power drives and power-actuated lowering or hoisting gear is powerless in this case.

The purpose of this utility model is exactly the needs of recovering at present skyscraper and mine, providing a kind of does not need any power just people and thing can be rescued from high-rise danger zone, and mainly be the lowering or hoisting gear of recovering by saving oneself, require that this apparatus structure is simple, cost is low, and easy to use.

The purpose of this utility model is to realize by the device of following introduction:

This device comprises framework, bearing, main shaft, powerful rope, movable pulley and luggage carrier.Framework (1) is installed in the attic of skyscraper or the edge of platform, the perhaps safety door of each floor (more than the 3rd buildings) or the outside of security window, framework is equipped with main shaft on (1), this main shaft is made up of the main shaft lift shaft (3) and the large diameter main shaft decline axle (4) of minor diameter, its two ends are assemblied on the framework (1) by bearing (2), and main shaft lift shaft (3) and main shaft decline axle (4) are one with one heart axially.Powerful rope (5) is generally steel wire rope or the big fire-resistant again rope of other tensile strength, its end is fixed on the end of main shaft lift shaft (3) near bearing, and fitly be wrapped on the axle, the rope lengths of twining should be located to the safe place (as ground greater than installation frame (1), the mine safety layer) height H, the other end of powerful rope (5) is put down by main shaft lift shaft (3) after twining, and pass a movable pulley (6), make progress again, fitly twine enough multiturns on main shaft descends axle (4) with same direction, put down then, pass second movable pulley (6), make progress again, fitly be wrapped in same direction on the main shaft lift shaft (3) of the main shaft other end, at last this end of powerful rope (5) be fixed on the axle head of close another bearing.Powerful rope (5) passes two movable pulleys (6) at three sections between centers, and length in reserve is 2H in the middle of it.Luggage carrier (7) is arranged below the movable pulley (6), that is to say on the frame top of luggage carrier (7) movable pulley (6) is housed.The diameter d of main shaft lift shaft (3) is littler than the diameter D of main shaft decline axle (4), and its ratio is d:D=1:1.5～3.Main shaft decline axle (4) is generally cylindric.For the one way lowering means except that be cylindric, can also be near from large to small round table-like of main shaft lift shaft (3) diameter D; For the round trip lowering or hoisting gear, then can be the recessed drum type that diameter D is small at both ends and big in the middle, its tapering is 1:5～30, this moment, D was a mean value, and Dmin must be greater than d.

Under security situation, this device is positioned in the attic of skyscraper or the edge of platform, perhaps the safety door of each floor (more than three layers) or the position of safe door and window, as the standby equipment of recovering, framework (1) can be accepted, and powerful rope (5) twines neat, is stand-by state.In case dangerous situation (mainly referring to fire) takes place, people in the skyscraper puts down framework (1) immediately, limited the loading capacity of luggage carrier according to equipment intensity situation, by loading limit, the people enters luggage carrier (7), the weight-driven main shaft that is produced by people's self weight rotates, main shaft lift shaft this moment (3) is upwards twined powerful rope (5), main shaft decline axle (4) is decontroled powerful rope (5) downwards, because d＞D, lift shaft (3) is concentric with the axle (4) that descends, and angular speed is identical, so luggage carrier (7) constantly at the uniform velocity descends under the effect of loading gravity, until arriving ground or security platform.Under the floor condition with higher, general design D:d is bigger, the axle (4) that main shaft can be descended this moment is designed to round table-like (descending for one way) or recessed drum type (for the round trip lifting), decrease speed can be very fast when beginning like this, put down from the major part of axle toward the microcephaly gradually with powerful rope (5), decrease speed slows down, near ground reduction of speed degree minimum at present, to reduce the impulsive force on luggage carrier (7) and ground, safer.For the round trip lowering or hoisting gear, two luggage carriers can use in turn.

The lifting device structure of recovering described in the utility model is simple, cost is lower, the utmost point is suitable for the safety devices as various skyscrapers and mine, in case dangerous situation (as fire) takes place, uses very convenient, and safe and reliable, the people is saved oneself, leave high-rise danger zone as early as possible, reduce personal injury, also can rescue valuables simultaneously.

Accompanying drawing 1 is the recover schematic diagram of lowering or hoisting gear of round trip;

Accompanying drawing 2 is recover schematic diagrames of lowering means of one way;

1 is framework, the 2nd among the figure, bearing, the 3rd, main shaft lift shaft, the 4th, main shaft decline axle, the 5th, powerful rope, the 6th, movable pulley, the 7th, luggage carrier.

Embodiment 1:

Be illustrated in figure 1 as the round trip lowering or hoisting gear of recovering, main shaft is syllogic, middle is main shaft decline spool (4), both sides are main shaft lift shaft (3), diameter is than being d:D=1:2, axle head is installed on the framework (1) by rolling bearing (2), powerful rope (5) twines by direction as shown, promptly be wrapped in three segmentations of main shaft with same direction, descend between the axle (4) in main shaft lift shaft (3) and main shaft, powerful rope (5) penetrates two movable pulleys (6) respectively, luggage carrier (7) is arranged below the movable pulley (6).When left side luggage carrier carries people and thing when eminence is fallen, the right luggage carrier is empty, has only deadweight, then rises.In like manner, after people and thing drop to ground, leave luggage carrier, the right luggage carrier carries again goes up pinnacled people and thing, can drop to ground safely again with its deadweight, about two luggage carriers take turns lifting.This device need not any power, and the gravity that the own weight of a utilization and people and thing produces comes drive unit, reaches the purpose of saving oneself, and is very convenient.

Embodiment 2:

Be illustrated in figure 2 as the one way lowering means of recovering, its structure is except main shaft, all identical with two-pass type, this lowering means all is the state that winds at ordinary times, weight frame (7) is stuck in a latch place of skyscraper roof or platform, in case generation dangerous situation, people and thing enter luggage carrier (7), unplug latch, under the effect of gravity, powerful rope (5) drives main shaft and rotates, and the rope on the large diameter main shaft decline axle (4) loosens linear velocity and tightens up linear velocity greater than the rope on the main shaft lift shaft (3) of minor diameter, so movable pulley (6) is gone up at powerful rope (5) and moved, luggage carrier (7) is disposable to drop to ground with people and thing.This apparatus structure is simpler, but can only with powerful rope (5) being wound once more later, be standby shape with once when emergent, prepares against and uses next time again.

Claims

1, a kind of lowering or hoisting gear that is used to recover, it comprises framework, bearing, main shaft, powerful rope, movable pulley and luggage carrier, it is characterized in that main shaft is made up of the main shaft lift shaft (3) of minor diameter and the large diameter main shaft axle (4) that descends, its two ends are assemblied on the framework (1) by bearing (2), framework then is fixed on the building of recovering or the eminence of mine, main shaft lift shaft (3) and main shaft decline axle (4) are one with one heart axially, one end of powerful rope (5) is fixed on the end of main shaft lift shaft (3) near bearing, and fitly be wrapped on the axle, its other end passes a movable pulley (6), fitly be wrapped on the main shaft decline axle (4) with same direction, pass second movable pulley (6) then, neatly be wrapped on the main shaft lift shaft (3) of the main shaft other end with same direction again, at last this end of powerful rope (5) is fixed on axle head, luggage carrier (7) is arranged below the movable pulley (6) near another bearing.

2, device according to claim 1, the diameter d that it is characterized in that described main shaft lift shaft (3) is littler than the diameter D of main shaft decline axle (4), its ratio is d:D=1:1.5～3, main shaft decline axle (4) is generally cylindric, for the one way lowering means except that cylindric, can also be near from large to small round table-like of main shaft lift shaft (3) diameter, for the round trip lowering or hoisting gear then can be that diameter two is big, middle little recessed drum type, tapering is generally 1:5～30, this moment, D was an average diameter, but Dmin must be greater than d.