CN201818232U - Emergency telescopic ladder with non-return function - Google Patents

Abstract

The utility model discloses an emergency telescopic ladder with non-return function, in particular to an emergency telescopic ladder with non-return function, which consists of a telescopic mechanism based on a parallel four-bar mechanism and a non-return mechanism based on ratchet principle, and belongs to the technical field of machinery. The utility model comprises a locking mechanism (1) based on a four-bar mechanism, a telescopic mechanism (2) and a non-return mechanism (3). When falling at any one height within the limited height range, the emergency telescopic ladder can get down to the ground and automatically lock and set the shape, and is prevented from retracting. After a person climbs on the ladder, the lower ladder section doesn't drop off or retract, so as to ensure the climbing safety and avoid secondary injury.

Description

The emergent extension ladder that check function is arranged

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of by based on the telescoping mechanism of parallelogram lindage and the emergent extension ladder of forming based on the non-return mechanism of ratchet principle that check function is arranged.

Background technology

During eminence escape hedging, the facility instrument that can take people's safety to ground exactly that needs most.The most frequently used effectively no more than blue shirt used climbing prompt drop rope and Emergency Ladder.These two kinds of instruments all have certain degree of difficulty and danger in use.

If rope landing does not have the safeguard protection instrument of specialty, through the special training accident that causes serious injury easily.Emergency Ladder is rope ladder, rope ladder, cable ladder mostly, and this ladder is climbed difficultly, and dangerous.When rope ladder uses, because the soft easily swing of rope ladder rope, make climbing person need whole body firmly to control rope swing and keep balance.Often very nervous when the people is in danger, climbing is got up just to seem and is particularly required great effort.It is just more difficult to climb for relatively poor, handicapped child old man of muscle power.

Sum up the existing eminence escape in existing market apparatus, found the several blind areas that exist:

1. existing extension ladder can not land pinnings after the arbitrary height dispensing, be not suitable for eminence escape use.

2. can not be arbitrarily the ladder that pins of position, the eager people that escape steps on directly whereabouts, back, causes the secondary injures and deaths of survivor's tumble injury even death.

3. some ladders occupation of land volumes are big, should not put to good use in small space;

4. rope prompt drop instrumentation difficulty is big, easily brings the secondary injury;

5. flexible equipment consumption muscle power is big, is not suitable for weakling, women's use.

At the blind area that existing escape apparatus exists, design the simple apparatus of a suitable eminence escape, remedy the existing blind area that the escape apparatus exists that exceeds, stronger specific aim and practicality are arranged.

The utility model content

At the existing blind area that exceeds the survival equipment existence, design new escape apparatus.The purpose of this utility model is the deficiency that remedies existing survival equipment, and a kind of new simple and easy escape machinery is provided.

A kind of emergent extension ladder that check function is arranged comprises retaining mechanism (1), telescoping mechanism (2), non-return mechanism (3) based on four-bar mechanism; Wherein: retaining mechanism (1) is made up of C shape rail (14), coaster (15), connecting bolt (16), lock (17) and brace (18), coaster (15) can slide along C shape rail (14), be connected with lock (17) with brace (18) by bolt (16), brace (18) is connected with telescoping mechanism (2); Telescoping mechanism (2) is formed by connecting by connecting rod and pin; Non-return mechanism (3) is by G shape rail (6), and roller (9), ratchet (7) and ratchet (8) are formed, and G shape rail (6) is connected with ratchet (7), and roller can roll in G shape rail and be connected with ratchet.

The utility model can be obtained following beneficial effect:

Be particularly suitable for eminence and use, both can arbitrary height land the back to pin typing automatically, pedal and can not fall again after stepping on to lower escape, safe and reliable;

Floor space is little, stretching structure convenient narrow and small indoor storage and use;

Simple and quick, need only fix one section or hand-held one section, ladder launches rapidly by gravity.Press safety button, guarantee that ladder is more stable;

Climb laborsavingly, overall structure adopts the hard stainless steel, the physical demands when reducing climbing;

Description of drawings

Fig. 1 has the overall structure schematic diagram of the emergent extension ladder of check function;

Fig. 2 has the structure chart of telescoping mechanism of the emergent extension ladder of check function;

Fig. 3 has the structure chart of non-return mechanism of the emergent extension ladder of check function;

Fig. 4 has the non-return mechanism left view of the emergent extension ladder of check function;

Fig. 5 has the structure chart of pawl structures of the emergent extension ladder of check function;

Fig. 6 has the structure chart of retaining mechanism of the emergent extension ladder of check function.

Among the figure: 1. retaining mechanism, 2. telescoping mechanism, 3. non-return mechanism, 4. connecting rod, 5. pin, 6.G shape rail; 7. ratchet; 8. ratchet; 9. roller; 10. roller shaft.11. sleeve; 12. spring; 13. thimble.14.C shape rail; 15. coaster; 16. connecting bolt; 17. lock 18. braces

The specific embodiment

As shown in Figure 2, select for use bar section of stainless steel to make one section PM prototype model, establishing ladder expansion maximum length is 2m, and shrinking the back minimum length is 0.3m.Telescoping mechanism selects for use the bar section of stainless steel of 10 * 20mm to make connecting rod (4), does 9 groups (18) altogether.Get the stainless steel square tube of 10 * 20mm, be cut into the 560mm/ root, center and punching two ends φ 8mm, the two ends pitch-row is 500mm.Adopt pin (5) to connect between every square tube.

As Fig. 1, shown in Figure 6, the slide rail of last locking mechanism (14) aluminium section bar (long 600mm, end punching φ 8mm is at the thick rubber of inner place mat one deck 2mm) and matching used with it coaster, it is in light weight, and stiffness and strength is better.But about load-bearing 80kg, satisfy model prototype and make demand.When needs locking ladder, lock ladder (press the bayonet lock of locking and eject dead bolt, dead bolt is contacted with the rubber of C shape rail inwall) with lock (17).Coaster and locking fix on the brace (18), and brace is connected with telescoping mechanism, as shown in Figure 6.Brace is made by bending, welding of the stainless steel substrates of 2mm.

Following lock portion is higher relatively to the stiffness and strength requirement of material, adopts the thick corrosion resistant plate of 2.5mm to make G shape rail (6), adopts Bending Processing as shown in Figure 3.Made ratchet (8) with the thick aluminium sheet of 8mm, adopted the line cutting to add tooth and link to each other, as Fig. 2, shown in Figure 4 with G shape rail.The ratchet part-structure is made of the thick aluminium sheet of 5mm, is made up of sleeve (11), spring (12), thimble (13).Sleeve is fixed on the aluminium sheet, and spring and thimble are housed in the sleeve, and thimble can slide up and down along sleeve, as shown in Figure 5.Pawl assembly links to each other with roller, telescoping mechanism by roller shaft, and roller freely rolls along rail in G shape rail.Under the effect of spring, can make thimble head on G shape rail inwall always, ratchet is contacted all the time with ratchet.Be deployed into the length of needs when ladder after, according to the ratchet principle, ratchet is stuck in the groove of a ratchet, realizes unidirectional check function.Use retaining mechanism locking ladder this moment again.Man-hour on the ladder, because action of gravity, the ladder telescoping mechanism has the trend of contraction.Under unidirectional non-return effect of ratchet ratchet and last retaining mechanism acting in conjunction, guarantee that the ladder telescoping mechanism does not shrink, make complete machine structure stable.

When eminence is escaped, the ladder of contraction state is discharged from window, balcony etc., ladder can launch under the effect of gravity voluntarily.When ladder is deployed into maximum deployed length, when perhaps running into ground, commanding agency's work, locking ladder.The upper end (portion of the handle) of ladder is fixed on the firm facilities such as balcony or window, can utilizes ladder to climb to ground, realize escape.

Claims (1)

1. the emergent extension ladder that check function is arranged is characterized in that: comprise retaining mechanism (1), telescoping mechanism (2), non-return mechanism (3) based on four-bar mechanism; Wherein: retaining mechanism (1) is made up of C shape rail (14), coaster (15), connecting bolt (16), lock (17) and brace (18), coaster (15) can slide along C shape rail (14), be connected with lock (17) with brace (18) by bolt (16), brace (18) is connected with telescoping mechanism (2); Telescoping mechanism (2) is formed by connecting by connecting rod and pin; Non-return mechanism (3) is by G shape rail (6), and roller (9), ratchet (7) and ratchet (8) are formed, and G shape rail (6) is connected with ratchet (7), and roller can roll in G shape rail and be connected with ratchet; Ratchet is made of sleeve (11), spring (12), thimble (13), and sleeve is fixed on the aluminium sheet, and spring and thimble are housed in the sleeve, and thimble can slide up and down along sleeve.

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