CN218391902U - Double-ball centrifugal friction type slow descending device - Google Patents

Abstract

A double-ball centrifugal friction type slow descending device relates to the field of high-altitude lifesaving slow descending devices, realizes self-adaptive weight high-rise building emergency escape slow descending by utilizing a pure mechanical structure, and comprises a shell, a central shaft, a fixed block, a centrifugal body, a push block, a rope drum, a direct current motor, a gear set and a rope, wherein the central shaft is fixed in the shell and is rotationally connected with the shell; the fixed block is fixedly connected with the central shaft; the centrifugal body is connected with the fixed block through a revolute pair; the pushing block is connected with the central shaft through a sliding key and drives the friction plates to contact with each other through axial movement; the rope drum is arranged on the central shaft; a DC motor installed on the housing; the gear set is arranged on the rope drum and the direct current motor; the rope is wound on the rope drum. This design passes through small-size direct current motor and realizes the recovery of rope through the gear train, can realize saving oneself and saving oneself each other many times. The slow descending device is simple in structure, reasonable in stress, low in manufacturing cost, and high in safety and stability.

Description

Double-ball centrifugal friction type slow descending device

Technical Field

The invention relates to a high-altitude lifesaving slow-descending device, in particular to a double-ball centrifugal friction type slow-descending device.

Background

When a building has a disaster dangerous situation such as a fire disaster on a floor of more than 50 meters, people have a very limited evacuation mode from the accident site, but at present, the number of high-rise buildings in China is at the first in the world, and the high-rise buildings are more and higher, but the development of fire fighting equipment and the high-rise buildings in China is seriously unbalanced. At high levels and with a high risk factor. Under the background, a plurality of high-rise slow-descent escape devices are generated in succession, however, the conventional slow-descent escape devices rely on electric power, have low reliability and poor slow-descent effect, rely on more external conditions and are influenced by a plurality of external environments, so that the safety performance of the slow-descent escape devices is reduced, and accidents are easy to occur during escape, so that the practical value is low.

Disclosure of Invention

In order to be suitable for the actual condition that electric power is possibly paralyzed when natural disasters of a high building occur, the safety speed required when the high building falls to the ground is taken as the design target, a powerful descent control device of a conversion mechanism is developed on the basis of a friction braking principle, the mode that the radial centrifugal force generated by a centrifugal ball body passes through a push block is converted into the axial force applied to a friction plate, the force is transmitted to a central shaft through a sliding key, finally, the friction torque and the gravity torque are balanced, the weight self-adaption is realized, the descent control device can effectively reduce the falling speed of people, trapped people safely descend to the ground at a constant speed and slowly, and meanwhile, a descent control rope can be quickly recovered to be recycled for multiple times.

In order to realize the purpose, the invention adopts the technical scheme that: provided is an escape device for high-rise buildings, comprising:

a housing for fixing to a wall; the central shaft is arranged in the shell, and two ends of the central shaft are rotationally connected with the shell; the fixed block is fixedly arranged on the central shaft; the two centrifugal bodies are respectively positioned at two ends of the fixed block; the pushing block is positioned on one side of the fixed block and is connected to the central shaft by virtue of a sliding key; the rope drum is fixedly sleeved on the central shaft; the direct current motor is fixed on the shell; the gear set is respectively arranged on the rope drum and the direct current motor; and one end of the rope is fixed on the rope drum, and the other end of the rope is wound along the rope drum and penetrates out of the shell.

Furthermore, the middle part of the outer shell is provided with a fixed friction plate, two ends of the outer shell are provided with tapered roller bearings, and the central shaft is connected with the outer shell through the bearings.

Furthermore, two rotating grooves which are uniformly distributed are formed in one inner surface of the fixing block, and rotating parts can be installed in the rotating grooves.

Furthermore, one end of the centrifugal body is connected to the fixed block by means of a rotating groove, and the other end of the centrifugal body is provided with a centrifugal ball which can drive the centrifugal body to rotate around the rotating groove, is in contact with the push block and can push the push block to move axially along the central shaft.

Furthermore, a fixed friction plate is arranged on one side surface of the push block, which is far away from the fixed block; the friction plate on the push block is matched with the friction plate arranged in the middle of the outer shell and can be contacted with each other.

Furthermore, the rope drum is connected with the central shaft through a one-way bearing, and a rope drum gear is also installed on the rope drum.

Furthermore, a gear is mounted on the direct current motor and meshed with the rope drum gear, and the gear ratio is one to one.

The utility model provides a high-rise building ware of fleing's beneficial effect lies in: when the escape restraint belt is used, the escape restraint belt is fixedly connected with the other end of the rope, then a user jumps out of a building, under the action of the gravity of the user, the rope drum is driven to rotate by the rope, the rope drum drives the central shaft, the fixing block and the push block to rotate through the one-way bearing, a centrifugal body and a centrifugal ball which are connected with the fixing block generate radial centrifugal force in the rotating process, the radial centrifugal force acts on the push block and enables the push block to move axially, so that a friction plate on the push block is in contact with a friction plate on a shell and moves relatively, friction resistance is generated between the friction plate and the friction plate, the centrifugal force generated by the centrifugal body and the centrifugal ball is larger when the rope drum rotates faster, the positive pressure between the friction plate and the friction plate is larger, the resistance between the friction plate and the friction plate is increased, the friction torque between the friction plate and the friction plate can hinder the rotating speed of the central shaft to rise, the rotating speed of the central shaft is effectively reduced by the mode, the purpose of reducing the descending speed of the user is achieved, and the rope can slide to the safe ground at a constant speed; the whole descending process is operated without a user, the safety factor of the high-rise building escape device is improved, and the potential safety hazard is reduced. The device has simple structure, and the atress is reasonable, low in manufacturing cost, advantage that the safety and stability can be high, real particular case when considering the accident to take place, and the practicality is strong, and the installation is dismantled conveniently, has reduced the maintenance cost, and can realize many people and save oneself and each other rescue many times.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Drawings

Fig. 1 is an isometric view of a double-ball centrifugal friction descent device provided by an embodiment of the invention.

Fig. 2 is a cross-sectional view of a double-ball centrifugal friction type descent control device provided by an embodiment of the invention.

Fig. 3 is a schematic view of a fixed block structure according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a centrifuge structure according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a push block according to an embodiment of the present invention.

Reference numerals are as follows: 1. a central shaft; 2. a housing; 3. a fixed block; 4, centrifuging the body; 5, centrifugal ball; 6. a push block; 7. a friction plate I; 8. a motor gear; 9. a direct current motor; 10. a tapered roller bearing; 11. a rotating groove; 12. a friction plate II; 13. a rope drum gear; 14. a rope drum bolt; 15. a rope; 16 binding bands; 17. a rope drum; 18. a sliding key; 19. and a one-way bearing.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings, and it should be understood that the embodiments described herein are merely illustrative and are not intended to limit the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Referring to fig. 1 to 5, a dual-ball centrifugal friction type descent control device provided by the present invention will now be described. A double-ball centrifugal friction type slow descending device comprises a shell 2, a central shaft 1, a fixed block 3, a centrifugal body 4, a push block 6, a rope drum 17, a direct current motor 9, gear sets 8 and 13 and a rope 15; the shell 2 is fixed on a wall body, a friction plate II 12 is arranged in the middle of the shell, the central shaft 1 is fixed on the shell 2 through a pair of tapered roller bearings 10, the fixing block 3 is fixedly connected with the central shaft 1, one side of the fixing block 3 is provided with a rotating groove 11, the centrifugal body 4 is connected with the fixing block 3 through the rotating groove 11 and can rotate around the rotating groove 11, one end of the centrifugal body 4 is provided with a centrifugal ball 5, the push block 6 is connected with the central shaft 1 through a sliding key 18, one end of the push block 6 is provided with the friction plate I, the other end of the push block can be contacted with the centrifugal body 4, the push block 6 can axially move along the central shaft 1, the rope drum 17 is installed on the central shaft through a pair of one-way bearings 19, one end of the rope drum 17 is provided with a rope drum gear 13 through a bolt 14, the direct current motor 9 is installed on the shell 2, a motor shaft is provided with a motor gear 8, the motor gear 8 is meshed with the rope drum gear 13, the gear ratio is one to two, one end of the rope 15 is fixed with the rope drum 17, the other end of the rope is wound and penetrates out of the shell 2 along the rope drum 17, and the other end is provided with a binding belt 16.

Referring to fig. 1 and fig. 2, compared with the prior art, the double-ball centrifugal friction type descent control device provided by the present invention has the following beneficial effects: the invention provides a double-ball centrifugal friction type slow descending device, when in use, a shell needs to be fixed well, a binding belt 16 is fixed with an escape person, then the escape person jumps out, under the action of the gravity of the escape person, a rope 15 drives a rope drum 17 to rotate, at the moment, the rope drum 17 transmits force to a central shaft 1 through a pair of one-way bearings 19, the central shaft 1 starts to rotate and drives a fixed block 3, a push block 6, a centrifugal body 4 and a centrifugal ball 5 to rotate, the centrifugal body 4 and the centrifugal ball 5 generate centrifugal force during rotation and rotate around a rotating groove 11, the centrifugal body 4 contacts with the push block 6 during rotation, the centrifugal force is converted into thrust force and transmitted to the push block 6 to push the push block 6 to move axially until a friction plate I7 on the push block 6 contacts with a friction plate 12 on the shell, the centrifugal body 4 provides axial thrust force to the push block 6, so that the friction plate I7 on the push block 6 generates friction resistance with the friction plate II on the shell 2 during rotation along with the central shaft 1, the friction plate I6 further blocks the rotation of the push block 6 and further restricts the rotation of the rope drum 17, and the escape person is safely limited.

In addition, the double-ball centrifugal friction type descent control device provided by the invention can also enable the rope 15 to be recovered through the direct current motor 9, in the rope recovering process, firstly, the direct current motor 9 is required to be switched to the ascending position, the direct current motor 9 drives the motor gear 8 to rotate, the motor gear 8 is meshed with the rope drum gear 13, therefore, power can be transmitted to the rope drum gear 13, the rope drum gear 13 then transmits the power to the rope drum 17, at the moment, the rope drum 17 is connected with the central shaft 1 through the pair of one-way bearings 19, therefore, the central shaft 1 cannot be driven to rotate, the friction part does not work, the rope 15 begins to be recovered, and the repeated use of the descent control device is realized.

According to the double-ball centrifugal friction type descent control device provided by the invention, the central shaft 1 is made of medium carbon steel with relatively high strength, and the centrifugal bodies 4 and the centrifugal balls 5 are made of steel materials with hardened surfaces, so that deformation is avoided in the working process of the escape descent control device for high-altitude buildings. The rope 15 adopts an aviation steel wire rope, so that the use strength is ensured. Fireproof flame-retardant materials are selected as parts of the whole double-ball centrifugal friction type descent control device.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a two ball centrifugal friction formula slow drop device which characterized in that includes:

a housing for fixing to a wall;

the central shaft is arranged in the shell, and two ends of the central shaft are rotationally connected with the shell;

the fixed block is fixedly arranged on the central shaft;

the two centrifugal bodies are respectively positioned at two ends of the fixed block;

the pushing block is positioned on one side of the fixed block and is connected to the central shaft by virtue of a sliding key;

the rope drum is fixedly sleeved on the central shaft;

the direct current motor is fixed on the shell;

the gear set is respectively arranged on the rope drum and the direct current motor;

and one end of the rope is fixed on the rope drum, and the other end of the rope is wound along the rope drum and penetrates out of the shell.

2. A dual-ball centrifugal friction type descent control device as claimed in claim 1, wherein a fixed friction plate is provided at a middle portion of the outer housing, tapered roller bearings are provided at both ends of the outer housing, and the central shaft is connected to the outer housing through the bearings.

3. A dual-ball centrifugal friction type descent control device as claimed in claim 1, wherein two rotation grooves are uniformly distributed on an inner surface of the fixed block, and the rotation grooves are adapted to receive rotation members.

4. A dual-ball centrifugal friction type descent control device as defined in claim 1, wherein one end of the centrifugal body is connected to a fixed block by a rotation slot, and the other end of the centrifugal body is a centrifugal ball which drives the centrifugal body to rotate around the rotation slot and contact with the push block to push the push block to move axially along the central shaft.

5. The double-ball centrifugal friction type descent control device according to claim 1, wherein a fixed friction plate is provided on a side surface of the push block away from the fixed block; the friction plate on the pushing block is matched with the friction plate arranged in the middle of the outer shell and can be contacted with each other.

6. A dual-ball centrifugal friction type descent control device as defined in claim 1, wherein said rope drum is connected to said central shaft through a one-way bearing, and a rope drum gear is also mounted on said rope drum.

7. A dual-ball centrifugal friction descent control device as defined in claim 1, wherein the dc motor is provided with a gear engaged with the rope drum gear at a ratio of one to two.

Images