CN108211144B - Axial compression descent control device - Google Patents
Axial compression descent control device Download PDFInfo
- Publication number
- CN108211144B CN108211144B CN201810217776.7A CN201810217776A CN108211144B CN 108211144 B CN108211144 B CN 108211144B CN 201810217776 A CN201810217776 A CN 201810217776A CN 108211144 B CN108211144 B CN 108211144B
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- Prior art keywords
- turntable
- pressing
- rope
- compression
- axial
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- 230000006835 compression Effects 0.000 title claims abstract description 41
- 238000007906 compression Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000020169 heat generation Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/18—Other single parts for rope lowering-devices, e.g. take-up rollers for ropes, devices for shooting ropes
Abstract
The invention discloses an axial compression descent control device, which is characterized in that: the device comprises a frame, a rope and an axial compressing mechanism, wherein the rope passes through the axial compressing mechanism, the axial compressing mechanism comprises a turntable and a compressing piece, the turntable is rotationally arranged on the frame, a supporting table extends out of the periphery of the bottom of the turntable, the rope surrounds the periphery of the turntable along the circumferential direction of the turntable and is arranged on the supporting table, the compressing piece comprises a pressing shell and a pressing roller, the pressing roller is rotationally arranged on the pressing shell, the pressing shell can be axially fixed along the turntable, and the pressing roller presses the rope along the axial direction of the turntable to contact the supporting table; when the turntable rolls on the rope, the rope drives the pressing roller to rotate. Has the advantages of simple structure, little abrasion, little heat generation, safety, reliability and long service life.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a descent control device.
Background
With the scale expansion of cities in China, the living environment of people is basically changed to be mainly high-rise buildings. Moreover, the population density is higher and higher, and particularly in public places, a large amount of casualties can be caused by one-time disaster accidents of high-rise buildings, particularly fire accidents. But the rescue escape measures are quite delayed, and the bottleneck problem that the rescue escape measures are difficult to crack is almost formed.
At present, a special fire disaster and earthquake escape device is not arranged on a high-rise building in China, when the unreliability of fire disaster, earthquake and the like occurs, the elevator is forbidden to use, the firefighting elevator can only marginally provide firefighters or carry firefighting equipment for use, a large number of people can walk down stairs only by means of evacuation stairs, and the evacuation speed is slow and the order cannot be controlled. In addition, special people such as the old, the weak, the sick, the disabled, the pregnant and the like have very inconvenient use of the evacuation stairs, are extremely easy to generate trampling events, and cause casualties.
The existing evacuation escape devices for high-rise buildings in the market can be roughly divided into descent control devices (boxes), escape ropes, escape rope ladders, descent control umbrellas, sliding ways and the like. The device is hung on the building outer wall or balcony in an open or semi-open mode, and is opened for temporary use when emergency occurs. In particular to a slow descending device with a turntable and rope structure, which has simple structure, convenient operation and wide application. The descent control device with the structure is also widely applied to the fields of outdoor rapid descent activities, outdoor rescue and the like.
However, in the conventional descent control device with the structure, the pressing member is generally a pressing plate, and directly acts on the rope along the radial direction of the turntable, so that sufficient static friction force between the rope and the turntable can be realized by increasing the contact area between the rope and the turntable, and at the moment, the pressing member adopts an arc-shaped pressing plate, and the friction force can be increased by increasing the pressure of the pressing member. No matter what way the static friction between the rope and the turntable is ensured, the following problems always exist: 1. in the lifting process of the slow-down device, sliding friction force exists between the pressing piece and the rope, the sliding friction force and the static friction force are in a proportional relation, and on one hand, a large amount of heat can be generated due to the existence of the sliding friction force, potential safety hazards exist, and on the other hand, the rope and the pressing piece are continuously worn due to long-time friction, so that the potential safety hazards exist. 2. The pressing part is generally fixed, the pressing part is continuously worn with the increase of the service time, the pressure is reduced, and the static friction force is reduced, so that the load bearing capacity of the descent control device is reduced, and the risk that the static friction force is suddenly changed into sliding friction force exists.
Therefore, how to improve the existing descent control device to overcome the above problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
The axial compression descent control device is simple in structure, small in abrasion, low in heat generation, safe, reliable and long in service life.
In order to achieve the above purpose, the invention adopts the following technical scheme: an axial compresses tightly slowly falls device, its characterized in that: the device comprises a frame, a rope and an axial compression mechanism, wherein the rope passes through the axial compression mechanism, the axial compression mechanism comprises a turntable and a compression piece, the turntable is rotationally arranged on the frame, a supporting table extends out of the periphery of the bottom of the turntable, the rope surrounds the periphery of the turntable along the circumferential direction of the turntable and is arranged on the supporting table, the compression piece comprises a compression shell and a compression roller, the compression roller is rotationally arranged on the compression shell, the compression shell can be axially fixed along the turntable, and the compression roller axially compresses the rope along the turntable to contact the supporting table; when the turntable rolls on the rope, the rope drives the pressing roller to rotate.
Preferably, the plurality of pressing rollers are rotatably arranged on the pressing shell along the circumferential direction, and the plurality of pressing rollers simultaneously press the rope to contact the turntable.
As an improvement, the compressing piece is further provided with an adjusting piece, the adjusting piece comprises an adjusting column, a compressing spring and an adjusting nut, the adjusting column is fixedly arranged at the axial center position of the top of the turntable and penetrates through the compressing shell, the adjusting nut is in threaded connection with the adjusting column, and the compressing spring is arranged between the compressing shell and the adjusting nut; the adjusting nut is positioned at different positions of the adjusting column and is used for adjusting the pressure of the pressing piece on the rope.
The axial compression slow descending device further comprises a braking mechanism, the braking mechanism comprises a handle and a rotating table, the rotating table is fixedly arranged on the frame, the front end of the handle is positioned above the pressing shell, and the middle section of the handle is hinged to the rotating table; pressing the rear end of the handle can cause the pressing member to press the rope.
As an improvement, the periphery of the turntable is wavy, and a groove is formed in the supporting table; and a bearing is arranged between the pressing shell and the adjusting column.
Further improvement, a guide lock platform is fixedly arranged on the frame, the guide lock platform is positioned above the axial compression mechanism and aligned with the central position of the axial compression mechanism, and the rope passes through the guide lock platform; the machine frame is provided with a guide post along the axial direction of the turntable, and the pressing shell is arranged on the guide post in a sliding manner.
Compared with the prior art, the invention has the following advantages:
1. the pressing roller can rotate, so that the sliding friction between the original pressing piece and the rope is converted into rolling friction, and in order to achieve the same maximum static friction between the rope and the turntable, the rolling friction is far smaller than the sliding friction, so that the abrasion of the rope and the pressing piece is smaller, and the generated heat is also less.
2. The rope pressing device has the advantages that the plurality of pressing rollers can simultaneously press the rope to contact the turntable, so that on one hand, larger pressure can be generated, the maximum static friction force between the rope and the turntable is increased, on the other hand, the friction force between the rope and the pressing piece is dispersed to a plurality of points, the load of a single pressing roller is reduced, gaps are reserved between the pressing rollers, heat dissipation can be better carried out, and the use is safer and more reliable.
3. The pressing spring continuously provides pressing shell pressure to ensure that enough static friction force exists between the rope and the turntable; the pressure of the pressing spring is regulated through the regulating piece, namely the pressure of the pressing piece is regulated, so that the maximum load is regulated; in the long-term use process, the pressing mechanism and the rope are worn, and can be adjusted through the adjusting piece, so that the safe weight is kept.
4. The arrangement of the wavy periphery of the turntable and the grooves of the supporting table enables gaps to be formed between the ropes and the turntable, so that the mechanism can dissipate heat more well, and the friction between the turntable and the ropes can be increased due to the arrangement of the grooves and the wavy grooves; the pressing shell is not rotated, the adjusting column rotates along with the turntable, and a bearing is arranged between the pressing shell and the adjusting column, so that the matching is more reasonable, and the strength of the mechanism is enhanced.
5. The brake mechanism is arranged, so that when the descent speed is too high, the descent control device can perform descent control, the descent control device can not fall at a high speed, and the safety of the device is improved; the brake mechanism has the further and more important function that an operator can control the descending speed of the descent control device through the brake mechanism at any time, so that the aim of safe landing is fulfilled.
6. The arrangement of the guide locking platform can keep the rope at the central position all the time, thereby playing a role in balancing and stabilizing. The guide post is used for preventing the pressing shell from rotating, so that the pressing shell can slide along the axial direction.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention.
Fig. 2 is an exploded view of a preferred embodiment according to the present invention.
Fig. 3 is a half cross-sectional view of a preferred embodiment according to the present invention.
Fig. 4 is an exploded view of a axial compression mechanism in accordance with a preferred embodiment of the present invention.
Fig. 5 is a schematic view showing an internal structure of the pressing member in accordance with a preferred embodiment of the present invention.
Fig. 6 is a schematic view showing a contact structure of a rope, a turntable, and a pressing roller according to a preferred embodiment of the present invention.
Description of the embodiments
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 6, a preferred embodiment of the present invention includes a frame 1, a rope 2 and an axial compressing mechanism 4, the rope 2 passes through the axial compressing mechanism 4, the axial compressing mechanism 4 includes a turntable 41 and a compressing member 42, the turntable 3 is rotatably disposed on the frame 1, a supporting table 411 extends from a bottom circumference of the turntable 41, the rope 2 surrounds the periphery of the turntable 41 along a circumferential direction of the turntable 41 and is disposed on the supporting table 411, the compressing member 42 includes a pressing housing 421 and a pressing roller 422, the pressing roller 422 is rotatably disposed on the pressing housing 421, the pressing housing 421 may be fixed along an axial direction of the turntable 41, and the pressing roller 422 contacts the supporting table 411 along the axial direction of the turntable 41 to press the rope 2; the pressing roller 422 is driven to rotate by the rope 2 as the turntable 41 rolls on the rope 2. The pressing rollers 422 are plural and rotatably provided on the pressing housing 421 in the circumferential direction, and the plural pressing rollers 422 simultaneously press the rope 2 to contact the turntable 41. The pressing piece 42 is also provided with an adjusting piece 43, the adjusting piece 43 comprises an adjusting column 431, a pressing spring 433 and an adjusting nut 432, the adjusting column 431 is fixedly arranged at the top axial center position of the turntable 41 and penetrates through the pressing shell 421, the adjusting nut 432 is connected to the adjusting column 431 in a threaded manner, and the pressing spring 433 is arranged between the pressing shell 421 and the adjusting nut 432; the adjusting nut 432 is in different positions of the adjusting column for adjusting the pressure of the compression member 42 against the rope 2. Wherein, the periphery of the turntable 41 is wavy, and the supporting table 411 is provided with a groove; a bearing 44 is provided between the pressing housing 421 and the adjustment post 431.
In order to increase safety, the axial compression slow descending device further comprises a braking mechanism 5, wherein the braking mechanism 5 comprises a handle 51 and a rotating table 52, the rotating table 52 is fixedly arranged on the frame 1, the front end of the handle 51 is positioned above the compression shell 421, and the middle section of the handle 51 is hinged to the rotating table 52; depressing the rear end of the handle 51 causes the hold-down member 42 to hold down the cord 2.
In addition, a guide lock table 6 is fixedly arranged on the frame 1, the guide lock table 6 is positioned above the axial compression mechanism 4 and aligned with the central position of the axial compression mechanism 4, and the rope 2 passes through the guide lock table 6; the frame 1 is provided with a guide post 11 along the axial direction of the turntable, and the pressing shell 421 is slidably arranged on the guide post 11.
In practical operation, the adjusting column 431 can be marked with corresponding weight scales, and the adjusting nut 432 can be adjusted according to the load weight, so that the whole weight of the lifting device is slightly larger than the maximum friction force of the axial compressing mechanism 4 and the rope 2. During the descent, the braking mechanism 5 is controlled, controlling the descent speed in real time.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An axial compresses tightly slowly falls device, its characterized in that: the device comprises a frame, a rope and an axial compression mechanism, wherein the rope passes through the axial compression mechanism, the axial compression mechanism comprises a turntable and a compression piece, the turntable is rotationally arranged on the frame, a supporting table extends out of the periphery of the bottom of the turntable, the rope surrounds the periphery of the turntable along the circumferential direction of the turntable and is arranged on the supporting table, the compression piece comprises a compression shell and a compression roller, the compression roller is rotationally arranged on the compression shell, the compression shell can be axially fixed along the turntable, and the compression roller axially compresses the rope along the turntable to contact the supporting table; when the turntable rolls on the rope, the rope drives the pressing roller to rotate;
the plurality of pressing rollers are rotationally arranged on the pressing shell along the circumferential direction, and simultaneously press the ropes to contact the turntable;
the pressing part is also provided with an adjusting part, the adjusting part comprises an adjusting column, a pressing spring and an adjusting nut, the adjusting column is fixedly arranged at the axial center position of the top of the turntable and penetrates through the pressing shell, the adjusting nut is in threaded connection with the adjusting column, and the pressing spring is arranged between the pressing shell and the adjusting nut; the adjusting nuts are positioned at different positions of the adjusting column and used for adjusting the pressure of the pressing piece on the rope;
the periphery of the turntable is wavy, and a groove is formed in the supporting table; and a bearing is arranged between the pressing shell and the adjusting column.
2. An axial compression descent control device according to claim 1, wherein: the axial compression slow descending device further comprises a braking mechanism, the braking mechanism comprises a handle and a rotating table, the rotating table is fixedly arranged on the frame, the front end of the handle is positioned above the compression shell, and the middle section of the handle is hinged to the rotating table; pressing the rear end of the handle can cause the pressing member to press the rope.
3. An axial compression descent control device according to claim 2, wherein: the machine frame is also fixedly provided with a lock guide table which is positioned above the axial compression mechanism and aligned with the central position of the axial compression mechanism, and the rope passes through the lock guide table; the machine frame is provided with a guide post along the axial direction of the turntable, and the pressing shell is arranged on the guide post in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217776.7A CN108211144B (en) | 2018-03-16 | 2018-03-16 | Axial compression descent control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217776.7A CN108211144B (en) | 2018-03-16 | 2018-03-16 | Axial compression descent control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108211144A CN108211144A (en) | 2018-06-29 |
| CN108211144B true CN108211144B (en) | 2024-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810217776.7A Active CN108211144B (en) | 2018-03-16 | 2018-03-16 | Axial compression descent control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108211144B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173332A (en) * | 1976-11-03 | 1979-11-06 | Dulondel Jacques | Rotary speed limiter device |
| CN102133457A (en) * | 2011-04-01 | 2011-07-27 | 张一扬 | Controllable safe slowly descending device |
| CN203634670U (en) * | 2013-10-23 | 2014-06-11 | 浙江工业大学 | Slow descending device for high-rise building escape |
| CN205460534U (en) * | 2016-03-23 | 2016-08-17 | 兖矿东华建设有限公司 | High -rise building escape equipment |
| CN206822966U (en) * | 2016-11-30 | 2018-01-02 | 江苏国信东凌风力发电有限公司 | A kind of wind-powered electricity generation specialized type life-saving slow descending device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL235049A (en) * | 2014-10-07 | 2017-05-29 | Skysaver Rescue Ltd | Centrifugal brake |
-
2018
- 2018-03-16 CN CN201810217776.7A patent/CN108211144B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173332A (en) * | 1976-11-03 | 1979-11-06 | Dulondel Jacques | Rotary speed limiter device |
| CN102133457A (en) * | 2011-04-01 | 2011-07-27 | 张一扬 | Controllable safe slowly descending device |
| CN203634670U (en) * | 2013-10-23 | 2014-06-11 | 浙江工业大学 | Slow descending device for high-rise building escape |
| CN205460534U (en) * | 2016-03-23 | 2016-08-17 | 兖矿东华建设有限公司 | High -rise building escape equipment |
| CN206822966U (en) * | 2016-11-30 | 2018-01-02 | 江苏国信东凌风力发电有限公司 | A kind of wind-powered electricity generation specialized type life-saving slow descending device |
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| Publication number | Publication date |
|---|---|
| CN108211144A (en) | 2018-06-29 |
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