CN203874300U

CN203874300U - Slow descending protector

Info

Publication number: CN203874300U
Application number: CN201420234647.6U
Authority: CN
Inventors: 李国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-09
Filing date: 2014-05-09
Publication date: 2014-10-15
Anticipated expiration: 2024-05-09

Abstract

A slow descending protector is a protector for enabling a person or an object to descend from a high position in a rate-limiting mode. The slow descending protector is mainly composed of a slow descending protector body, a lifting ring, a rotating wheel, a solid sphere, an end cover, a slow descending rope and a bolt. The rotating wheel provided with the solid ball is arranged in a circular hole of the slow descending protector body, the circular hole in the slow descending protector body is provided with a plurality of circular arc grooves. The slow descending rope surrounds a rotating shaft of the rotating wheel, and one end of the slow descending rope is connected with the person or the object needing to decent slowly. When the slow descending protector works, the slow descending rope drives the rotating wheel to rotate, the rotating wheel drives the solid ball to conduct circular motion, the solid ball generates centrifugal force, the centrifugal force is increased along with the motion speed of the solid ball, and the rotating wheel is enabled to obtain reverse torque increasing along with increasing of the speed. When the reverse torque is equal to the torque applied on the rotating wheel by the person or the object needing to descend slowly, the speed of the descending person or object is reduced so as to achieve the purpose of rate limiting and slow descending.

Description

The slow protector that falls

Technical field:

The utility model relates to a kind of device that people or object are declined by eminence speed limit.As the high-rise slow descent escape device of security against fire, safety guard of rock climbing etc. in sports.

Background technology:

The existing device that people or object are declined by eminence speed limit, the technology adopting is varied, but all has complex structure, and manufacturing cost is high, uses inconvenience or the poor defect of security reliability.

Utility model content:

Technical problem to be solved in the utility model is: provide a kind of slow protector that falls for the deficiencies in the prior art.

The technical scheme that the utility model adopts is: the slow protector that falls is by slowly falling protector body, suspension ring, swiveling wheel, medicine ball, end cap, slowly falling rope 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 circular holes are radially evenly set on the circumference of swiveling wheel, 1 to 3 medicine ball is set in each hole.Swiveling wheel is arranged on slow falling in the circular hole of protector body, and several arc grooves are radially evenly set on the circumference of this circular hole.When the slow like this people who falls or object decline, the slow moving swiveling wheel of rope band that falls rotates, swiveling wheel drives medicine ball to circle as the center of circle taking swiveling wheel axis, in same circular hole, produce centrifugal force apart from the near medicine ball of swiveling wheel central axis, promote adjacent medicine ball and make its centrifugal force larger.Medicine ball produces centrifugal force N; make medicine ball and the slow interior wall friction that falls protector body circular hole form frictional resistance F; when medicine ball moves to slow falling in the arc groove of protector body; medicine ball clashes into arc groove and makes groove surfaces to medicine ball generation reaction force P, and frictional resistance F and reaction force P are along with medicine ball centrifugal force N increases and increases.The size of centrifugal force N and the movement velocity of medicine ball square of medicine ball are directly proportional, and frictional resistance F and reaction force 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, and in the time that opposing torque equates with the torque of the slow people who falls or object generation, the people of decline or object decrease speed are no longer accelerated, and delay the object of falling with speed limit thereby reach.

The slow medicine ball that falls protector is rotatable and to move axially be the diameter that the Circularhole diameter of swiveling wheel is greater than medicine ball in the circular hole of swiveling wheel, and its degree of depth is greater than diameter of solid sphere sum in same circular hole.

The slow medicine ball radius that falls protector is less than the slow radius that falls protector body arc groove, otherwise medicine ball can not contact arc bottom portion of groove, groove is reduced to the decelerating effect of medicine ball.The slow degree of depth of falling protector body arc groove is less than the radius of medicine ball in addition, on the contrary medicine ball issue and be conigenous lock in the gentle effect of falling protector body arc groove of swiveling wheel, medicine ball can not rotate, and causes slowly to fall protector and can not work.

Due to the slow medicine ball arc groove reaction force P to medicine ball in the slow arc groove that falls protector body that falls protector; the opposing torque producing is greater than the opposing torque that medicine ball and descending lifeline protector body circular-hole internal-wall frictional force F produce; in the time that the quantity of arc groove equates with the circular hole quantity that medicine ball is installed; medicine ball littlely when large while causing opposing torque makes the slow protector that falls can not smooth working by arrive arc groove and leave groove simultaneously simultaneously, and so the arc groove quantity of falling protector body slow should be more than the circular hole quantity that medicine ball is installed.

Brief description of the drawings

Figure of description 1 and Fig. 2 are the utility model one example structure cutaway views

Detailed description of the invention

Are example structure cutaway views of the present utility model referring to Figure of description 1 and accompanying drawing 2, this descending lifeline is mainly by slow falling protector body 1, suspension ring 2, swiveling wheel 3, medicine ball 4, end cap 5, slowly falling rope 6 and bolt 7 forms.The slow rope 6 that falls is looped around in the rotating shaft of swiveling wheel 3, and slow one end that falls rope 6 connects people or the object that must slow fall.7 circular holes are radially evenly set on the circumference of swiveling wheel 3,2 medicine balls 4 are set in each hole, swiveling wheel 3 is arranged on slow falling in the circular hole of protector body 1, and 8 arc grooves 8 are radially evenly set on the circumference of this circular hole.

Claims

1. the slow protector that falls is mainly by the slow protector body (1) that falls, suspension ring (2), swiveling wheel (3), medicine ball (4), end cap (5), slow rope (6) and bolt (7) formation of falling, it is characterized in that: slow fall rope (6) and be looped around in the rotating shaft of swiveling wheel (3), slow one end that falls rope (6) connects people or the object that must slow fall, several circular holes are radially evenly set on the circumference of swiveling wheel (3), 1 to 3 medicine ball (4) is set in each hole, swiveling wheel (3) is arranged on slow falling in the circular hole of protector body (1), several arc grooves (8) are radially evenly set on the circumference of this circular hole.

2. slowly as claimed in claim 1 fall protector and it is characterized in that: medicine ball (4) the circular hole of swiveling wheel (3) in rotatably with move axially.

3. slowly as claimed in claim 1 fall protector and it is characterized in that: the radius of medicine ball (4) is less than the slow radius that falls protector body (1) arc groove (8), and the degree of depth of arc groove (8) is less than the radius of medicine ball (4).

4. slowly as claimed in claim 1 fall protector and it is characterized in that: the quantity of the slow arc groove (8) that falls protector body (1) is more than the circular hole quantity that medicine ball (4) is installed.