CN103706049B - Novel high-rise fire catching device - Google Patents

Abstract

The invention discloses a novel high-rise fire fall arrester, comprising: a clamping device and a speed-regulating braking device, the speed-regulating braking device is connected with the clamping device through a rope; the clamping device is provided with a connecting screw Connect the inner splint and the outer splint, and clamp by operating the locking handle and the secondary fastening screw; the speed regulating brake device is provided with an eccentric wheel and a braking V-shaped rod, and the eccentric wheel adjusts the eccentric position through the speed regulating screw. Then adjust and control the falling speed; the brake V-shaped bar is fixed by the limit of the brake switch, so as to realize the stop or start of the escape fall. The invention is safe and reliable in use, reasonable in structure, fast in installation, convenient in speed regulation and fast in self-locking, suitable for high-rise residents, and can be used as a high-rise fire self-rescue device to realize safe and fast escape of people trapped in fire.

Description

A new type of high-rise fire fall arrester

technical field

The invention discloses a novel high-rise fire fall arrester, which belongs to the technical field of high-rise escape devices.

Background technique

With the rapid development of the construction industry, the building floors continue to rise, and the existing fire rescue equipment is difficult to meet its development needs, which poses new challenges to the high-rise fire rescue work. Thereby, high-rise fire is the weak point of current fire rescue. However, fires occur frequently, which poses a great threat to the personal safety of the people. Especially, when the high-rise buildings are on fire, the smoke fills the air, and rescue is difficult to arrive, many people choose to escape by falling from the building. When there is no reliable fall protection equipment for shelter, falling from a building and escaping is nothing more than choosing another "suicide". Therefore, the anti-fall escape equipment is an important support for the safe escape of high-rise buildings. In order to solve the above problems, scholars at home and abroad have done a lot of research work on escape equipment for high-rise buildings, and proposed the following escape devices:

(1) Adjust wrap angle: the escape device adjusts the falling speed by adjusting the wrap angle between the wire rope and the wire wheel to change the frictional resistance between the wire rope and the wire wheel. Although the structure of this scheme is simple, when the wrap angle is too large, it is easy to cause problems of rope entanglement and mid-air jamming; Therefore, manual adjustment is difficult.

(2) Hydraulic damping type: This escape device uses a damping plate to limit the flow velocity of the liquid, so that the escaped personnel can land at a constant speed, and the damping size can be adjusted according to the load weight. The fall speed of the escape device is stable, but its speed regulating device is completed by a hydraulic system, which has a complicated structure and high manufacturing cost.

This shows that above-mentioned two kinds of high-rise escape devices also have certain limitations in practical application. Therefore, it is urgent to develop a high-rise escape device that is all better in safety, operability and economy.

Contents of the invention

The purpose of the present invention is to overcome the existing deficiencies and provide a new mechanical semi-automatic high-rise fire fall arrester with safe and reliable use, reasonable structure, quick installation, convenient speed regulation and rapid self-locking, so as to meet the safety requirements of people trapped in fire. Escape quickly.

To achieve the above object, the present invention adopts the following technical solutions:

The novel high-rise fire fall arrester includes: a clamping device, a speed-regulating braking device, and the speed-regulating braking device is connected to the clamping device through a rope; the clamping device includes: a connecting screw, a locking handle, Secondary fastening screws, inner splints, and outer splints, the two ends of the connecting screw are respectively provided with left-handed and right-handed threads in opposite directions, which are connected with the screw holes of the inner splint and the outer splint; the lock The tight handle is fixed on one end of the connecting screw; the secondary fastening screw is installed in the screw hole at the lower end of the inner splint; the speed regulating brake device includes: a front cover, a rear cover, an eccentric , installation shaft, speed regulating screw, brake V-shaped rod, pin shaft, brake switch, and the rear cover is provided with interconnected rope grooves, eccentric wheel grooves and braking mechanism grooves; the eccentric wheel passes through the The installation shaft is installed in the groove of the eccentric wheel; the speed regulating screw is assembled in the screw hole on the side of the rear cover, and one end is pressed tightly in the V-shaped groove of the eccentric wheel; the brake V-shaped The rod is installed in the groove of the brake mechanism through the pin shaft, and is limited and fixed by the brake switch.

In the present invention, a rubber layer is installed inside the inner and outer splints, and the surface of the rubber layer is grooved and polished.

In the present invention, a lifting lug is provided on the outer side of the outer splint, and the lifting lug is connected with the speed regulating braking device through a rope.

In the present invention, the two ends of the brake V-shaped bar are respectively provided with brake pads and lever wheels.

In the present invention, the rear cover is provided with a limit pin corresponding to the position of the brake switch.

Compared with the prior art, the high-rise fire fall arrester adopting the above-mentioned technical scheme has the following technical effects:

①Use the left and right-hand threads of the connecting screw to drive the inner and outer splints at the same time, so that the inner and outer splints quickly move closer to the wall, and realize the fast clamping of the clamping device; the rubber layer is installed on the inner side of the inner and outer splints. During the clamping process , through rubber deformation and close fit with the wall, the friction between the clamping device and the wall is increased, and the reliability of the clamping device is improved; the wall is clamped by the secondary fastening screw to realize the secondary clamping device Secondary clamping, effectively preventing the clamping device from rotating or detaching from the wall when the escape falls.

②When escaping and descending, you can turn the speed-adjusting screw through the handle to drive the eccentric wheel to rotate, and adjust the gap between the rope grooves of the eccentric wheel to adjust the falling speed; On, to realize the free and convenient adjustment of the falling speed.

③When the descending speed is too fast, and the escape personnel panic and it is difficult to adjust the falling speed, they can directly turn the brake switch and put down the brake V-shaped lever. The brake V-shaped lever is driven by the friction between the rope and the lever wheel. When the clockwise rotation is made, the brake pad connected with the brake V-shaped bar is tightly pressed on the rope, limiting the relative movement between the brake pad and the rope, and realizing fast braking in an emergency.

In summary, the present invention uses left and right-handed threads to simultaneously drive the inner and outer splints to quickly clamp the wall, and uses secondary fastening screws to realize the secondary clamping of the clamping device; the eccentric wheel structure is used to change the gap between the rope grooves , to achieve manual speed regulation; and use the principle of leverage to drive the braking V-shaped rod by the friction between the falling rope and the lever wheel to complete the rapid braking in emergency situations. The present invention is safe and reliable in use, reasonable in structure, fast in installation, convenient in speed regulation, fast in self-locking, suitable for high-rise residents, and can be used as a high-rise fire self-rescue device to realize safe and fast escape of people trapped in fire.

Description of drawings

Figure 1 is a schematic diagram of the clamping device.

Figure 2 is a schematic diagram of the speed regulating brake device.

Fig. 3 is a sectional view of the structure of the eccentric wheel in the present invention.

Fig. 4 is a partial sectional view of the manual speed regulating device in the present invention.

Fig. 5 is a position diagram of the closed and open state of the brake V-shaped lever in the present invention.

In the drawings: 1--connecting screw, 2--hanging lug, 3--outer splint, 4--rubber layer, 5--inner splint, 6--secondary fastening screw, 7--locking handle, 8--front cover, 9--bolt, 10--installation shaft, 11--rear cover, 12--rope groove, 13--rope, 14--eccentric wheel groove, 15--eccentric wheel, 16 --V-shaped groove, 17--speed regulating screw, 18--brake mechanism groove, 19--pin shaft, 20--brake V-shaped rod, 21--brake switch, 22--limit pin, 23---brake pad, 24---lever wheel, 25---hang hole.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail:

Referring to accompanying drawing 1,2,3,4,5, novel high-rise fire fall arrester of the present invention comprises:

1--connecting screw, 2--hanging lug, 3--outer splint, 4--rubber layer, 5--inner splint, 6--secondary fastening screw, 7--locking handle, 8--front Cover plate, 9--bolt, 10--installation shaft, 11--back cover plate, 12--rope groove, 13--rope, 14--eccentric wheel groove, 15--eccentric wheel, 16--V shape Slot, 17--speed regulating screw, 18--brake mechanism slot, 19--pin shaft, 20--brake V-shaped lever, 21--brake switch, 22--limit pin, 23--brake 24--lever wheel, 25--hanging hole, the two ends of the connecting screw 1 are respectively provided with left-handed and right-handed threads in the opposite direction, which are matched with the screw holes of the inner splint 5 and the outer splint 3 connection; the inner side of the inner splint 5 and the outer splint 3 are installed with a rubber layer 4, the surface of the rubber layer 4 is grooved and polished; the locking handle 7 is fixed on one end of the connecting screw 1; the two The secondary fastening screw 6 is installed in the screw hole at the lower end of the inner splint 5; the outside of the outer splint 3 is provided with a lug 2, and the lug 2 is connected with the speed regulating brake device through a rope 13; The rear cover 11 is provided with a rope groove 12, an eccentric wheel groove 14 and a brake mechanism groove 18 which communicate with each other; the eccentric wheel 15 is installed in the eccentric wheel groove 14 through the installation shaft 10; the speed regulating screw 17 is assembled in the screw hole on the side of the rear cover 11, and one end of it is tightly pressed in the V-shaped groove 16 of the eccentric wheel 15; the two ends of the brake V-shaped rod 20 are respectively provided with a brake pad 23 and a lever wheel 24; the brake V-shaped rod 20 is installed in the brake mechanism groove 18 through the pin shaft 19, and is limited and fixed by the brake switch 21; the rear cover 11 corresponds to the brake The position of the switch 21 is provided with a limit pin 22; the front cover 8 and the rear cover 11 are fixedly connected by bolts 9; the safety buckle on the escape jacket is connected to the hanging hole 25 at the lower end of the speed regulating brake device.

The working principle of the present invention is briefly described as follows: the trapped person rotates the locking handle 7 to drive the connecting screw 1 to rotate, thereby using the left and right-handed threads of the connecting screw 1 to simultaneously drive the inner splint 5 and the outer splint 3 to make the inner splint 5 and the outer splint 3 quickly move closer to the wall to realize the fast clamping of the clamping device; and use the secondary fastening screw 6 to clamp the wall to realize the re-clamping of the clamping device to prevent the clamping device from falling during the escape When turning or breaking away from the wall. The trapped person connects the safety buckle on the escape jacket with the hanging hole 25 at the lower end of the speed regulating braking device, and the speed regulating braking device descends together with the trapped persons. When the trapped person falls and escapes, the eccentric wheel 15 can be driven to rotate by turning the speed regulating screw 17 to adjust the eccentric wheel rope groove gap to realize the adjustment of the falling speed. When needing to stop descending, rotatable speed regulating screw 17 causes eccentric wheel 15 to be pressed on rope 13 tightly. During the normal descent, the brake switch 21 with a fixed limit is in the closed state, and the brake V-shaped bar 20 does not realize the braking effect. When an emergency occurs or the falling speed exceeds the safe speed, the trapped person can turn the brake switch 21. Change the position of the brake switch 21 so that it is in the open state, and use the friction between the rope 13 and the lever wheel 24 to drive the brake V-shaped lever 20 to rotate clockwise, so that the brake mechanism is connected to the end of the brake pad 23 and presses the rope tightly. 13, thereby realizing rapid braking in emergency situations. If the trapped person wants to continue to descend, he must first turn the speed regulating screw 17 so that the eccentric wheel 15 is tightly pressed on the rope 13, and then reverse the brake switch 21 to make the brake V-shaped bar 20 return to the closed state position and stop braking. Action, then slowly rotate the speed regulating screw 17, change the eccentric wheel 15 positions, adjust the eccentric wheel rope groove gap, and get back to the safe descending speed again. Therefore, the escape device can perform falling speed regulation and emergency braking, so as to realize the safe and fast falling and escape of trapped persons.

Claims (5)

1. a fire in high buildings catching device, comprising: clamping device, speed governing brake apparatus, and described speed governing brake apparatus is connected with described clamping device by rope; Described clamping device comprises: connecting screw rod, set lever, secondary trip bolt, inner splint, external splint, and described connecting screw rod two ends are respectively equipped with the contrary left and right hand thread of rotation direction, is connected with the screw of described inner splint and described external splint; Described set lever is cemented in one end of described connecting screw rod; Described secondary trip bolt is arranged in the screw of described inner splint lower end; Described speed governing brake apparatus comprises: front shroud, back shroud, eccentric wheel, installation shaft, droop adjustment screw, braking V shape pole, bearing pin, brake switch, and described back shroud is provided with the grooving be interconnected, eccentric race and brake flute; Described eccentric wheel is arranged in described eccentric race by described installation shaft; Described droop adjustment screw is assemblied in the screw of described back shroud side, and its one end is pressed in described eccentric V-shaped groove; Described braking V shape pole is arranged in described brake flute by described bearing pin, and spacing fixing by described brake switch.

2. fire in high buildings catching device according to claim 1, is characterized in that: install rubber layer inside described inside and outside clamping plate, and described rubber layer surface is through grooving, grinding process.

3. fire in high buildings catching device according to claim 2, is characterized in that: be provided with hanger outside described external splint, described hanger is connected with described speed governing brake apparatus by rope.

4. fire in high buildings catching device according to claim 1, is characterized in that: described braking V shape pole two ends are respectively arranged with brake block and lever wheel.

5. fire in high buildings catching device according to claim 1, is characterized in that: the corresponding brake switch position of described back shroud is provided with spacer pin.