CN2270515Y

CN2270515Y - Screw type device for lowering person slowly

Info

Publication number: CN2270515Y
Application number: CN 96228984
Authority: CN
Inventors: 周明德
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-27
Filing date: 1996-09-27
Publication date: 1997-12-17
Anticipated expiration: 2006-09-27

Abstract

The utility model provides a screw type device for lowering persons slowly, which is suitable for fire fighting and life saving of high rising buildings and overhead safe operations. The utility model is characterized in that the screw type slide, a rope groove and an integral casting technique are adopted; structures of an annular closed rope loop, a riding straddle type sitting belt, etc. are matched with the screw type slide, rope groove and integral casting technique. The utility model overcomes the defects of the existing slow lowering device, such as complex structure, expensive price, easy breakdown, hard operation, etc. The screw type device for lowering persons slowly has the advantages of compact structure, small size, light weight, firm and durable structure, high safety, low cost, high conveying efficiency, simple operation, adjustable lowering speed in the lowering, timely adjustment of the lowering speed, etc.

Description

The screw descending lifeline

The utility model belongs to the screw descending lifeline, and the safety device for life-saving when it is a kind of high building breaking out of fire also is the necessary security instrument of work high above the ground, derrick engineering and mountaineering etc.

Skyscraper is more and more now, and builds higher and higher, and what have surpasses hundred meters high, and high-rise fire happens occasionally, and personal injury and material damage are quite heavy, and the gesture of cumulative year after year is arranged.How when high-rise breaking out of fire, can withdraw upstairs personnel and goods and materials promptly, safely and be the key subjects in public security, the fire-fighting work.Modern aerial ladder is difficult to surpass hundred meters high, and deposits that to give birth to quantity few, costs an arm and a leg, and withdraws into a speed slowly, problem such as more can not generally purchase.That makes at present both at home and abroad various slowly falls Life Saving Apparatus, fragile though each have their own advantage exists also that volume is big, deal heavy, complex structure, and can not adjust decrease speed at any time, and what have can only the slow degradation shortcoming of one way.

The purpose of this utility model is in order to overcome above-mentioned shortcoming, a kind of screw descending lifeline is provided, and it can the implementation structure compactness, volume is little, in light weight, not fragile, safe and reliable, can adjust decrease speed, transfer efficiency height, price are low, easy to operate, be easy to advantages such as popularization.

In order to achieve the above object, the utility model adopts by screw rod body main part, annular closed fake and straddle-type seat band, anticreep positioning rope forms the screw descending lifeline, as shown in Figure 4.Wherein:

Screw rod body main part part, its outward appearance is similar to one group of pulley, shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3.Screw rod body main part is by load-carrying hanging column (1), both sides clamping plate (2), (3), and the upper and lower locating hole (10) that first half grooving (4), (5), (6), Lower Half grooving (7), (8), hollow shaft (9), anti-rope come off, (11), last nameplate (12), following nameplate (13) are formed.Grooving on the screw rod body main part is spiral, or first half grooving (4), (5), (6) be parallel, and Lower Half grooving (7), (8) are spirality, and the spiral angle of grooving can be 540 °, 920 ° and 1260 ° three kinds.The grooving section is " U " shape, and the width of grooving must be more than or equal to the diameter of supporting with it rope, and each grooving interpenetrates, and the downward chamfering in two ends is open.Screw rod body main part of the present utility model is to make with high-intensity aluminium alloy, stainless steel etc., and with each parts cast solid of screw rod body main part, the grooving surface needs the fine finishining polishing.

The closed fake part of annular, as shown in Figure 4, it is made up of first half rope (14), Lower Half rope (15), metal spring hook (16), (17).Used rope is that high-intensity chemical fibre of employing or carbon fiber are that raw material makes no moment of torsion rope in the utility model.A complete set of rope links from beginning to end, and the metal spring hook is respectively fastened in two connection places, forms a closed fake of annular.The power that first half rope (14) mainly bears is carrying force and frictional force, and the power that Lower Half rope (15) mainly bears is control.Metal spring hook (16), (17) are to sit band in order to be inserted in straddle-type in use rapidly, are convenient to the lifting of reporting to the leadship after accomplishing a task, evacuation personnel and goods and materials.

Straddle-type is sat band partly, as shown in Figure 5.It is sat by left leg and is with (19), right leg seat band (20) and backrest band (21), triangle suspension ring (22), (23) to form.The angle that left and right sides leg is sat the angle theta of band and backrest band junction is between 40 °～80 °, the best is 50 °, so just can correcting in the past, safety belt adopts 90 ° the practice, with this structure human body weight (or goods and materials weight) is born respectively by three broadbands, stressed evenly, overcome stress and defective such as concentrated.The human pressure concentrates on buttocks and back during use, and both legs can be suitably movable.Because there are three straps to surround the positions such as both legs, both arms and chest of human body, the network structure of a safety of formation is firmly sealed human body, be difficult for throwing off, particularly health can be kept the sitting posture posture, both legs and both hands can be free movable in the use, fall the condition created for safety is slow.Seat band in the utility model is applicable to adult and the children more than a meter, does not need to adjust the size of chest measurement temporarily, sits band with this and wears off conveniently, helps evacuating rapidly personnel.

The positioning rope of anticreep (18) shown in accompanying drawing 3,4, is used to prevent that rope from deviating from grooving, improves security.

The using method of screw descending lifeline is very simple, as shown in Figure 6, after the carbine (16) in left side first half rope ends hangs up the people of 100 kilograms of body weight for humans, when relying on self potential energy to descend, the right side rope just becomes control end, the decline personnel just can keep health to stop to descend as long as with hand the right side rope is applied 10～20 kilograms pulling force.When loosening the right side rope gradually with hand, when allowing right rope rise voluntarily, just can adjusting the decrease speed of self voluntarily.The ratio of control and carrying force generally is 10～15%.Just finished for the first time slowly when falling task when left side carbine (16) drops to bottom, right side carbine (17) has risen to high-rise position, right side (as shown in Figure 7) and has got ready for slow falling for the second time.When the also manned member of right side carbine (17) descended, the left side rope just changed control end into, can adopt a left side to fall right control and right way of falling left side control in view of the above, back and forth alternately evacuated personnel.The people of operation control end rope both can be controlled (shown in accompanying drawing 6, the accompanying drawing 7) voluntarily by the descender, also can be by standing in high-rise rescue personnel on behalf of control (as shown in Figure 8), perhaps by the ground staff on behalf of operation (as shown in Figure 9).As the single decline of needs once, then can adopt the descending method shown in the accompanying drawing 10.The utility model descending lifeline is beginning slowly when falling personnel, should adopt and hold health earlier, re-uses low speed (0～1 meter per second), and the available midway high speed that descends (1～3 meter per second) can be slowed down during near bottom, and arrival is one meter left and right sides Shi Keyong 0 speed overhead.Owing to can control decrease speed, so can help the user of service to stand firm, prevent to fall down, guarantee safety.

Description of drawings of the present utility model is as follows:

Fig. 1 is the front view of screw rod body main part of the present utility model.

Fig. 2 is the left view of screw rod body main part of the present utility model.

Fig. 3 is the left view of screw rod body main part of the present utility model behind last rope.Wherein:

(1) load-carrying hanging column; (2), (3) clamping plate; (4), (5), (6) first half grooving; (7), (8) Lower Half grooving; (9) hollow shaft; (10) locating hole on the anticreep; (11) the anti-locating hole of taking off; (12) go up nameplate; (13) nameplate under; (14) go up the half-turn rope; (18) anticreep positioning rope.

Fig. 4 is the utility model general assembly drawing.Wherein, (14) go up the half-turn rope; (15) lower branch rope; (16) left spring hook; (17) right carbine.

Fig. 5 is that straddle-type of the present utility model is sat band figure, and wherein, (19) left leg is sat band; (20) right leg is sat band; (21) backrest band; (22), (23) triangle suspension ring.

Fig. 6 is that the people falls in left side of the present utility model, the schematic diagram of right side control.

Fig. 7 is that the people falls in right side of the present utility model, the schematic diagram of left side control.

Fig. 8 is that the rescue personnel stands in the slow schematic diagram that falls of the high-rise control wounded in the utility model.

Fig. 9 is in the utility model, and the ground staff assists to control evacuation personnel's schematic diagram.

Figure 10 is in the utility model, the single schematic diagram that once descends.

The utility model has the advantage of: its compact conformation, volume is little, and is in light weight, efficient height, price be low, Sturdy and durable, safe and reliable, the advantage such as easy to use. Can be widely used in fire-fighting rescue, work high above the ground, derrick Engineering, family's lifesaving and mountaineering.

Embodiment:

Screw rod body main part in the utility model is to use high-intensity aluminium alloy casting, each parts cast solid of main part, and polish with fine finishining on each grooving surface.Between first half grooving (4), (5), (6) is parallel, Lower Half grooving (7), (8) then are spiral, a rope is introduced from an end, draw from the other end by spiral Lower Half grooving, when rope is stressed when sliding in grooving, produce the friction damping effect, and the size of friction changes with the variation of control end pulling force, thereby realize slow purpose of falling.Among the utility model embodiment, employed rope is the no moment of torsion rope of making as raw material with high strength chemistry fiber, and straddle-type is sat band and adopted the PP band.

Claims

1, a kind of screw descending lifeline, it is by screw rod body main part, the closed fake of annular, straddle-type sit band and the anticreep positioning rope is formed, it is characterized in that first half grooving (4), (5), (6), Lower Half grooving (7), (8) are spiral, or be parallel between the first half grooving (4), (5), (6), and Lower Half grooving (7), (8) are spiral, first half grooving (4), (5), (6) connect mutually with Lower Half grooving (7), (8).

2, screw descending lifeline according to claim 1 is characterized in that on the screw rod body main part spirality grooving being arranged, and the spiral angle of grooving is between 540 °～1260 °.

3, screw descending lifeline according to claim 1 is characterized in that the internal diameter of the grooving on the screw rod body main part must be more than or equal to the diameter of matching used rope with it.

4, screw descending lifeline according to claim 1 is characterized in that each parts cast solid of screw rod body main part.

5, screw descending lifeline according to claim 1 is characterized in that the annular closed fake that the rope in the grooving adopts head and the tail to link.

6, screw descending lifeline according to claim 1 is characterized in that the straddle-type in the descending lifeline is sat in the band, and the angle of the angle theta of left and right leg seat band and backrest band junction is between 40 °～80 °.