CN213085327U

CN213085327U - High-rise fire-fighting escape slow-descending device

Info

Publication number: CN213085327U
Application number: CN202022033838.4U
Authority: CN
Inventors: 杨兵; 刘超越
Original assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Current assignee: Sichuan Jian'an Weiye Construction Engineering Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-30
Anticipated expiration: 2030-09-16

Abstract

The application relates to a high-rise fire-fighting escape slow-descending device which comprises a main body, wherein a friction block and a driving wheel are arranged in the main body in a rotating mode, the driving wheel is arranged in the center of the main body in a rotating mode, and a rope body is arranged between the friction block and the driving wheel in a winding mode. The driving wheel is provided with a speed reducing device for limiting the rotation of the driving wheel, and the speed reducing device comprises a pawl and a clamping block. The pawl rotates and sets up on the lateral wall of drive wheel, and the axis of rotation of pawl and the axis of rotation dislocation set of drive wheel are equipped with in the axis of rotation of pawl and order about the pawl to being close to drive wheel axis of rotation one side pivoted torsional spring, and the fixture block welding is used for with the pawl joint in the main part, and the welding has the restriction pawl pivoted fixed block on the drive wheel, and the fixed block is located the pawl and keeps away from drive wheel axis of rotation one side. When the rotating speed of the driving wheel is too high, the pawl is thrown outwards under the action of centrifugal force and clamped with the clamping block, the rotation of the driving wheel is limited under the action of the clamping block and the fixing block, and the safety of the descent control device is effectively improved.

Description

High-rise fire-fighting escape slow-descending device

Technical Field

The application relates to the field of safety escape equipment, in particular to a high-rise fire-fighting escape slow-descending device.

Background

The life-saving slow-descending device consists of a hook (or a hanging ring), a hanging strip, a rope, a speed controller and the like, and is a safe rescue device which can lead people to slowly descend along the rope. It can be installed on the window of building, balcony or flat top of building, or on the fire truck for rescuing the person in fire in high-rise building.

Patent No. CN207989601U discloses a descent control device. The ware slowly falls includes the main part, winds and establishes the subassembly setting in the main part, winds and establishes the subassembly and form through the clearance in the main part, winds and establishes the thing and winds and establish in passing through the clearance, and the interval of passing through the clearance is adjustable, when reducing through the clearance, winds and establishes the speed reduction that the thing passed through the clearance.

With respect to the related art among the above, there are the following drawbacks: the rope and the winding assembly are decelerated by friction force, so that the friction force is easily reduced when the conditions such as water inflow and the like occur in the device, the slow descending effect of the device is reduced, and the danger is caused when the descending speed of a user is too high.

SUMMERY OF THE UTILITY MODEL

In order to improve the security of ware slowly falls, this application provides a high-rise fire control escape slowly falls device.

The application provides a high-rise fire control flees slowly and falls device adopts following technical scheme:

the utility model provides a high-rise fire control is fleed and is slowly fallen device, includes the main part, around being equipped with the rope body in the main part, one section of rope body downstream is first section rope segment, and one section of upward movement is second section rope segment, be provided with decelerator in the main part, including drive wheel, pawl and fixture block, the drive wheel rotates and sets up in the main part, the axis of rotation perpendicular to rope body place plane of drive wheel, the rope body is around establishing on the drive wheel, the pawl rotates and sets up on the lateral wall of drive wheel, the axis of rotation of pawl and the axis of rotation dislocation set of drive wheel, be provided with in the axis of rotation of pawl and be used for ordering about the pawl to being close to drive wheel center pivoted elastic component, set firmly on the drive wheel and be used for restricting pawl pivoted locating part, the fixture block sets firmly in the.

By adopting the technical scheme, when a user uses the slow descending device, the slow descending device fixes the slow descending device on the first rope section, then starts to descend, and drives the driving wheel to rotate through the rope body; when the user's descending speed is too fast, the drive wheel throws away the pawl under the effect of centrifugal force, and the pawl blocks with the fixture block joint and is blockked by the locating part to the restriction drive wheel rotates. After the driving wheel stops rotating, rolling friction between the rope body and the driving wheel is converted into sliding friction, so that the falling speed of the rope body is reduced or a user stops sliding, danger caused by the fact that the falling speed of the user is too high is effectively avoided, and the safety of the slow falling device is effectively improved.

Preferably, one side of the driving wheel, which is far away from the clamping block, is provided with a driven wheel, the driven wheel is rotatably arranged in the main body, the driven wheel is parallel to a rotating shaft of the driving wheel, and a gap for the rope body to pass through is arranged between the driven wheel and the driving wheel.

By adopting the technical scheme, the rope body passing through the space between the driven wheel and the driving wheel is pressed tightly by the driven wheel, when the pawl is not rotated out, the rope body, the driving wheel and the driven wheel are in rotational friction, and the driving wheel and the driven wheel have small influence on the falling speed of the rope body; when the pawl is clamped with the clamping block, the driven wheel compresses the rope body and the driving wheel, so that the friction force between the driving wheel and the rope body is effectively improved, the blocking effect of the driving wheel on the rope body is increased, and the safety of the slow descending device is effectively improved.

Preferably, the circumferential side walls of the driven wheel and the driving wheel are provided with anti-skid teeth.

Through adopting above-mentioned technical scheme, further improved the frictional force between drive wheel and the rope body, improved the security of slowly falling device.

Preferably, the elastic part is a torsion spring, one end of the torsion spring is fixedly connected with the pawl, and the other end of the torsion spring is fixedly connected with the driving wheel.

By adopting the technical scheme, the pawl always keeps in a retracting state when the rotating speed of the driving wheel is low.

Preferably, the limiting piece is a fixed block, and an elastic block used for being in contact with the pawl is arranged on the fixed block.

Through adopting above-mentioned technical scheme, provide the buffering when for pawl and fixture block joint, effectively avoid the too big damage that leads to of pawl impact force.

Preferably, a fixing sleeve for fixing the body is fixedly arranged on the first end rope body.

By adopting the technical scheme, the user can fix the user conveniently, so that the escape is safer.

Preferably, the fixed sleeve is provided with a guide sleeve, and the second section of rope is slidably arranged in the guide sleeve in a penetrating manner.

Through adopting above-mentioned technical scheme, when fleing, make second section rope segment can be grabbed by the user, when the decelerator in slowly falling device leads to the rope body to stop sliding when taking effect, the user grabs second section rope segment and utilizes self dead weight to stimulate downwards and make the drive wheel reversal, and the pawl can be withdrawed, makes slowly falling device continue to operate, has effectively improved slowly falling device's suitability.

Preferably, the guide sleeve is provided with a friction layer in contact with the rope portion for the second section.

Through adopting above-mentioned technical scheme, the whereabouts in-process user can grasp the uide bushing, thereby increases frictional force through the frictional layer and slows down self falling speed, effectively avoids user falling speed to take place danger at the excessive speed, has effectively improved the security of slowly falling the device.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotating device in the main body is provided with a driving wheel, a pawl is rotatably arranged on the driving wheel, a limiting part for limiting the rotation of the pawl is fixedly arranged on the driving wheel, a clamping block for being clamped with the pawl is fixedly arranged in the main body, when the falling speed of a user is too high, the pawl is thrown out by the driving wheel under the action of centrifugal force, and the pawl is clamped with the clamping block and is blocked by the limiting part, so that the rotation of the driving wheel is limited, the danger caused by the too high falling speed of the user is effectively avoided, and the safety of the slow falling;

2. the driven wheel is arranged on one side, away from the clamping block, of the driving wheel, and when the pawl is clamped with the clamping block, the driven wheel tightly presses the rope body and the driving wheel, so that the friction force between the driving wheel and the rope body is effectively improved, the blocking effect of the driving wheel on the rope body is increased, and the safety of the slow descending device is effectively improved;

3. the fixed cover is provided with the uide bushing, and first section rope segment and two sections rope body all slide and wear to establish in the uide bushing, and when the rope body stopped sliding, the user seized second section rope segment and pulled downwards and made the drive wheel reversal, and the pawl can be withdrawed, has effectively improved the suitability of slowly falling the device.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Description of reference numerals: 1. a main body; 11. hooking; 2. a rope body; 21. a first rope segment; 22. a second rope segment; 3. a reduction gear; 31. a drive wheel; 32. a pawl; 33. a clamping block; 34. a fixed block; 341. an elastic block; 35. a torsion spring; 36. a driven wheel; 37. a guide groove; 4. fixing a sleeve; 41. locking; 5. and a guide sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a high-rise fire-fighting escape slow-descending device. Referring to fig. 1 and 2, the high-rise fire-fighting escape slow-descending device comprises a main body 1, wherein a hook 11 for a fixing device is fixedly arranged at the top of the main body. The main part 1 internal rotation is provided with clutch blocks and drive wheel 31, and drive wheel 31 rotates and sets up in main part 1 central point, and rope body 2 winds and establishes between clutch blocks and drive wheel 31, drives drive wheel 31 and rotates when rope body 2 slides. The rope body 2 is in a closed ring shape, one section of the rope body 2 passing through the main body 1 is a first rope section 21, and the other section of the rope body 2 is a second rope section 22. The drive wheel 31 is provided with a reduction gear 3 for restricting rotation thereof.

Referring to fig. 2 and 3, the reduction gear 3 includes a pawl 32 and a latch 33. The pawl 32 is rotatably arranged on the side wall of the driving wheel 31, the rotating shaft of the pawl 32 and the rotating shaft of the driving wheel 31 are arranged in a staggered mode, a torsion spring 35 which drives the pawl 32 to rotate towards one side close to the rotating shaft of the driving wheel 31 is sleeved on the rotating shaft of the pawl 32, one end of the torsion spring 35 is welded with the driving wheel 31, and the other end of the torsion spring is welded with the pawl 32. The fixture block 33 is welded on the inner wall of the main body 1 and located above the driving wheel 31 and used for being clamped with the pawl 32, the driving wheel 31 is welded with a fixing block 34 for limiting the pawl 32 to rotate for a certain angle, the fixing block 34 is located on one side, away from the rotating shaft of the driving wheel 31, of the pawl 32, when the pawl 32 is clamped with the fixture block 33, one side, away from the fixture block 33, of the pawl 32 is in contact with the fixing block 34, when the rotating speed of the driving wheel 31 is too high, the pawl 32 is thrown out outwards under the action of centrifugal force and clamped with the fixture block 33, and the rotation of.

Referring to fig. 2 and 3, the rubber elastic block 341 is attached to the fixture block 33 in a hot-melting manner, and when the pawl 32 is clamped with the fixture block 33, the elastic block 341 is elastically deformed to provide buffering for the pawl 32, so that the deformation and damage of the pawl 32 caused by overlarge impact during clamping are effectively avoided.

Referring to fig. 2 and 3, a driven pulley 36 is rotatably provided below the driving pulley 31, the rope 2 passes through a gap between the driving pulley 31 and the driven pulley 36, and the driven pulley 36 presses the rope 2 against the driving pulley 31. When the first rope segment 21 slides downwards, the driving wheel 31 and the driven wheel 36 are driven by the rope body 2 to rotate; when the rotating speed of the driving wheel 31 is too fast and the pawl 32 rotates out to be clamped with the clamping block 33, sliding friction exists between the rope body 2 and the driving wheel 31, the driven wheel 36 compresses the rope body 2 and the driving wheel 31, the friction force between the rope body 2 and the driving wheel 31 is effectively improved, and the speed reduction effect is improved.

Referring to fig. 2 and 3, the driving wheel 31 and the driven wheel 36 are circumferentially provided with a guide groove 37, and the rope body 2 is slidably inserted into the guide groove 37 to prevent the rope body 2 from falling off during operation. The surfaces of the circumferential direction of the driving wheel 31 and the driven wheel 36 contacting with the rope body 2 are provided with anti-skid teeth, so that the friction force on the rope body 2 is effectively improved, and the speed reducing effect of the driving wheel 31 on the rope body 2 is further increased.

Referring to fig. 2, the fixing sleeve 4 is fixed on the first rope segment 21 through a fixing ring and a fastening bolt, and a buckle lock 41 is connected on the fixing sleeve 4, so that a user can conveniently sleeve the fixing sleeve 4 on the body. The fixed sleeve 4 is connected with a guide sleeve 5, and the guide sleeve 5 is sleeved on the second section of rope segment 22 in a sliding manner, so that a user can fall down. When the user escapes, the fixed sleeve 4 is sleeved on the body of the user and then falls, the falling speed is high, the pawl 32 rotates out to limit the rotation of the driving wheel 31, when the friction force between the driving wheel 31 and the rope body 2 is high, the user stops falling, the user pulls the second section of rope section 22 downwards to drive the driving wheel 31 to rotate reversely, the pawl 32 is separated from the clamping block 33, the pawl 32 can be retracted under the action of the torsion spring 35, and the driving wheel 31 continues to rotate.

A friction layer made of polyester material is fixedly arranged in the guide sleeve 5, so that the abrasion of the rope body 2 to the guide sleeve 5 is effectively reduced. When the falling speed is fast, the user can hold the guide sleeve 5 to increase the friction force between the guide sleeve 5 and the rope body 2, so that the speed reduction effect is achieved, and the safety of the slow falling device is effectively improved.

Rope body 2, fixed cover 4 and uide bushing 5 all adopt aramid fiber material to make, have good fire prevention and tensile strength, guarantee that its tensile strength accords with national standard, effectively improve device's security.

The implementation principle of the high-rise fire-fighting escape slow-descending device in the embodiment of the application is as follows: when escaping, the user puts the fixing sleeve 4 on the body, throws out the rope body 2, and the user slides downwards along the rope body 2. When the falling speed is too high, the rotating speed of the driving wheel 31 is high, the pawl 32 is thrown outwards through centrifugal force, the pawl 32 is clamped with the clamping block 33 and the fixing block 34 to limit the rotation of the driving wheel 31, so that the resistance between the driving wheel 31 and the rope body 2 is increased, the falling speed of a user is reduced, and the safety of the slow falling device is effectively improved; when the friction force is applied to cause the user to stop falling, the user pulls the second rope segment 22 downwards to drive the driving wheel 31 to rotate reversely, and the pawl 32 is driven to retract under the action of the torsion spring 35, so that the driving wheel 31 can continue to rotate.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high-rise fire control is fleed and is slowly fallen device, includes main part (1), around being equipped with rope body (2) in main part (1), one section of rope body (2) downstream is first section rope segment (21), and one section of upward movement is second section rope segment (22), its characterized in that: be provided with decelerator (3) in main part (1), including drive wheel (31), pawl (32) and fixture block (33), drive wheel (31) rotate and set up in main part (1), the axis of rotation perpendicular to rope body (2) place plane of drive wheel (31), rope body (2) are around establishing on drive wheel (31), pawl (32) rotate and set up on the lateral wall of drive wheel (31), the axis of rotation of pawl (32) and the axis of rotation dislocation set of drive wheel (31), be provided with in the axis of rotation of pawl (32) and be used for driving about pawl (32) to being close to drive wheel (31) center pivoted elastic component, set firmly on drive wheel (31) and be used for restricting pawl (32) pivoted locating part, fixture block (33) set firmly in main part (1) and are used for with pawl (32) joint.

2. A high-rise fire-fighting escape slow-descending device according to claim 1, characterized in that: one side of the driving wheel (31) far away from the clamping block (33) is provided with a driven wheel (36), the driven wheel (36) is rotatably arranged in the main body (1), the driven wheel (36) is parallel to a rotating shaft of the driving wheel (31), and a gap for the rope body (2) to pass through is formed between the driven wheel (36) and the driving wheel (31).

3. A high-rise fire-fighting escape slow-descending device according to claim 2, characterized in that: anti-skid teeth are arranged on the circumferential side walls of the driven wheel (36) and the driving wheel (31).

4. A high-rise fire-fighting escape slow-descending device according to claim 1, characterized in that: the elastic piece is arranged as a torsion spring (35), one end of the torsion spring (35) is fixedly connected with the pawl (32), and the other end of the torsion spring is fixedly connected with the driving wheel (31).

5. A high-rise fire-fighting escape slow-descending device according to claim 1, characterized in that: the limiting piece is a fixing block (34), and an elastic block used for being in contact with the pawl (32) is arranged on the fixing block (34).

6. A high-rise fire-fighting escape slow-descending device according to claim 1, characterized in that: the first rope section (21) is fixedly provided with a fixed sleeve (4) for fixing a body.

7. A high-rise fire-fighting escape slow-descending device according to claim 6, characterized in that: the fixed sleeve (4) is provided with a guide sleeve (5), and the second section of rope section (22) is slidably arranged in the guide sleeve (5).

8. A high-rise fire-fighting escape slow-descending device according to claim 7, characterized in that: the guide sleeve (5) is provided with a friction layer which is in contact with the rope section (22) at the second section.