CN104190008A - Positive-pressure descent control device - Google Patents
Positive-pressure descent control device Download PDFInfo
- Publication number
- CN104190008A CN104190008A CN201410450478.4A CN201410450478A CN104190008A CN 104190008 A CN104190008 A CN 104190008A CN 201410450478 A CN201410450478 A CN 201410450478A CN 104190008 A CN104190008 A CN 104190008A
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- CN
- China
- Prior art keywords
- control device
- descent control
- positive
- descending lifeline
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Abstract
The invention discloses a positive-pressure descent control device which is mainly composed of a descent control device shell, a rotating wheel, a center shaft, cylinders, an end cover, a descent control rope assembly and a bolt. The rotating wheel provided with the cylinders is installed in a round hole of the descent control device shell, and the round hole of the descent control device shell is provided with a plurality of arc grooves. When the descent control device works, the rotating wheel is driven by a descent control rope to rotate, the cylinders are arranged in the arc grooves of the descent control device shell, the cylinders impact the arc grooves, and the arc grooves generate normal acting force, namely positive-pressure force, on the cylinders along contact faces. The cylinders transmit the positive-pressure force to the rotating wheel, the rotating wheel obtains reverse torque in the direction opposite to the rotating direction of the rotating wheel, and therefore the purpose of speed limiting and descent controlling of the descent control device is achieved. Due to the fact that the positive pressure enables the reverse torque obtained by the rotating wheel to be not affected by object friction coefficients, the descent control device is resistant to oil and water.
Description
Technical field
The present invention is a kind of positive-pressure type descending lifeline, belongs to fire-extinguishing and lifesaving equipment.
Background technology
The fire disaster escaping descending lifeline of existing single use adopts friction mechanism to slow down more.This mechanism utilizes the mutual frictional resistance of movement parts to slow down, and frictional force can change because of the coefficient of friction of object, so poor stability.The descending lifeline of other structures also exists complex structure, manufacturing cost high, uses the defects such as inconvenience or security reliability be poor.
Summary of the invention
Technical problem to be solved by this invention is: for the deficiencies in the prior art, provide a kind of positive-pressure type descending lifeline.
The technical solution adopted in the present invention is: positive-pressure type descending lifeline by descending lifeline housing, swiveling wheel, central shaft, cylinder, end cap, slow rope assembly falls and bolt forms.Delay and fall becket bridle in the rotating shaft of swiveling wheel, slow one end that falls rope connects people or the object that must slow fall by jockey, and jockey can be hook or hook base etc.Several U-shaped grooves are evenly set on the circumference of swiveling wheel, a cylinder is set in each U-shaped groove.Central shaft is arranged in swiveling wheel, and swiveling wheel is arranged in the circular hole of descending lifeline housing, and several arc grooves are evenly set on the circumference of this circular hole.Slowly when the slow like this people who falls or object decline fall the moving swiveling wheel rotation of rope band, swiveling wheel drives cylinder to take central shaft and circles as the center of circle.Cylinder produces centrifugal force N, makes cylinder and the friction of descending lifeline housing, forms frictional resistance F.In cylinder moves to descending lifeline housing arc groove, cylinder clashes into a side of arc groove, and it is normal pressure P that arc groove produces along the normal force of contact-making surface to cylinder.A cylinder is only set in each U-shaped groove, and when a plurality of cylinder is set, cylinder is interfered mutually, makes each cylinder can not be all and the arc groove effective collision of descending lifeline housing, has reduced that descending lifeline is slow falls effect.Frictional resistance F and normal pressure P increase with cylindrical centrifugal force N.Square being directly proportional of the size of cylindrical centrifugal force N and cylindrical quality and its movement velocity.Frictional resistance F and normal pressure P produce opposing torque to the rotation of swiveling wheel.Along with the slow people who falls or the increase of object decrease speed, opposing torque increases simultaneously.When opposing torque equates with the torque of the slow people who falls or object generation, thereby the people of decline or object decrease speed no longer accelerate to reach the slow object of falling of constant speed.
The cylinder of positive-pressure type descending lifeline can rotate and be mobile in the U-shaped groove of swiveling wheel, and the width of U-shaped groove is greater than cylindrical diameter.
The cylindrical radius of positive-pressure type descending lifeline is less than the radius of descending lifeline housing arc groove, otherwise cylinder can not contact arc groove bottom, groove is reduced to cylindrical active force.The degree of depth of descending lifeline housing arc groove is less than cylindrical radius in addition, on the contrary cylinder in the effect of swiveling wheel and descending lifeline housing arc groove, issue and be conigenous lock, cause descending lifeline stuck.
Because the cylinder of positive-pressure type descending lifeline is in the arc groove of descending lifeline housing, the opposing torque that the opposing torque that groove produces cylindrical normal pressure P produces much larger than cylinder and descending lifeline housing circular-hole internal-wall frictional force F.When the groove of descending lifeline housing equates with cylinder quantity, cylinder will arrive arc groove simultaneously and leave arc groove simultaneously, little when large while causing opposing torque, make the descending lifeline can not smooth working, so the groove quantity of descending lifeline housing should be more than cylindrical quantity, and both greatest common divisors are less than 5.
Accompanying drawing explanation
Fig. 1 and Fig. 2 are a preferred embodiment of the present invention structure cutaway views.
The specific embodiment
Referring to Fig. 1 and Fig. 2, it is the better enforcement structure of the present invention one cutaway view, this positive-pressure type descending lifeline by descending lifeline housing 1, swiveling wheel 2, central shaft 3, cylinder 4, end cap 5, slow rope assembly 6 falls and bolt 7 forms, the slow rope 6 that falls is looped around in the rotating shaft of swiveling wheel 2, and slow one end that falls rope 6 connects people or the object that must slow fall.13 U-shaped grooves 8 are evenly set on the circumference of swiveling wheel 2, a cylinder 4 is set in each U-shaped groove, central shaft 3 is arranged in swiveling wheel 2, and swiveling wheel 2 is arranged in the circular hole of descending lifeline housing 1, and 16 arc grooves 9 are evenly set on the circumference of this circular hole.
Claims (4)
1. a positive-pressure type descending lifeline is by descending lifeline housing (1), swiveling wheel (2), central shaft (3), cylinder (4), end cap (5), slow rope assembly (6) and bolt (7) formation of falling, it is characterized in that: delay and fall becket bridle in the rotating shaft of swiveling wheel (2), slow one end that falls rope connects people or the object that must slow fall, several U-shaped grooves (8) are evenly set on the circumference of swiveling wheel (2), a cylinder (4) is set in each U-shaped groove, central shaft (3) is arranged in swiveling wheel (2), swiveling wheel (2) is arranged in the circular hole of descending lifeline housing (1), several arc grooves (9) are evenly set on the circumference of this circular hole.
2. positive-pressure type descending lifeline is characterized in that as claimed in claim 1: its width of U-shaped groove (8) on swiveling wheel (2) circumference is greater than the diameter of cylinder (4).
3. positive-pressure type descending lifeline is characterized in that as claimed in claim 1: the radius of cylinder (4) is less than the radius of descending lifeline housing (1) arc groove (9), and the degree of depth of arc groove (9) is less than the radius of cylinder (4).
4. positive-pressure type descending lifeline is characterized in that as claimed in claim 1: the quantity of the arc groove (9) of descending lifeline housing (1) is more than the quantity of cylinder (4), and both greatest common divisors are less than 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450478.4A CN104190008A (en) | 2014-09-05 | 2014-09-05 | Positive-pressure descent control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450478.4A CN104190008A (en) | 2014-09-05 | 2014-09-05 | Positive-pressure descent control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104190008A true CN104190008A (en) | 2014-12-10 |
Family
ID=52075462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410450478.4A Pending CN104190008A (en) | 2014-09-05 | 2014-09-05 | Positive-pressure descent control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104190008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112891766A (en) * | 2021-03-22 | 2021-06-04 | 上海应用技术大学 | Emergency escape system for multi-storey building |
| CN114470542A (en) * | 2022-03-09 | 2022-05-13 | 赵二辉 | Novel centrifugal escapement type speed stabilizing mechanism |
-
2014
- 2014-09-05 CN CN201410450478.4A patent/CN104190008A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112891766A (en) * | 2021-03-22 | 2021-06-04 | 上海应用技术大学 | Emergency escape system for multi-storey building |
| CN112891766B (en) * | 2021-03-22 | 2022-10-11 | 上海应用技术大学 | Emergency escape system for multi-storey building |
| CN114470542A (en) * | 2022-03-09 | 2022-05-13 | 赵二辉 | Novel centrifugal escapement type speed stabilizing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |