CN2211832Y

CN2211832Y - Speed difference self control human body anti-drop deivce

Info

Publication number: CN2211832Y
Application number: CN 94248553
Authority: CN
Inventors: 章康明
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-29
Filing date: 1994-12-29
Publication date: 1995-11-08
Anticipated expiration: 2004-12-29

Abstract

The utility model relates to a speed difference self control human body anti-dropping device, which comprises a shell body, a central wheel, a central shaft, a tension spring, a bilateral pawl, a guide bush, a steel cable, a spring, etc. The speed difference self control human body anti-dropping device is characterized in that the central wheel is composed of a ratchet wheel with bilateral ratchets and a cover. Without a built-in bearing, the utility model can meet the needs of various requisite lengths in high-altitude construction operation.

Description

Speed difference self control human body anti-drop deivce

The utility model relates to the individual safety protective tools of high-rise working personnel fall arrest.

In the prior art, with the patent No. 93214563.9 is example, solved the workman aloft during operation safety rope commonly used make the problem of catching device, but the structure of this catching device has seriously limited the spreading range of self, have significantly restrictive, referring to this catching device ratchet of Fig. 5, the bilateral ratchet structure of employing and axle sleeve disjunctor, the centre is a dead eye, inner chamber is the clockwork spring dish, because of bearing is a standard component, endoporus, external diameter all are subjected to strict control, during high-rise working because of operation place difference, operating range is also different, certainly will need the series of products of length activity, with regard to this ratchet, cooperating axle bumper with brearing bore as central shaft is ∮ 10, the bearing of selecting the external diameter maximum for use is 301, and its external diameter is ∮ 32, and just the endoporus of ratchet is ∮ 32, the maximum gauge of clockwork spring dish is no more than 80 catching device maximums of ∮ can only make 5 meters scope of activities, and in fact need 10 meters on the market, 20 meters, even bigger scope of activities, cause bearing big more like this, weight is big more, cost is high more, gives assembling, and processing has increased difficulty.

The purpose of this utility model is at the problems referred to above, on the basis of existing structure, removes bearing, enlarges the diameter of clockwork spring dish, thereby can produce the catching device that is applicable to all lengths requirement, obviously weight reduction reduces volume, improve assembling, the efficient of removing stage makeup and costume reduces cost.

The purpose of this utility model is achieved in that a kind of speed difference autocontrol human body catching device by housing 1, centre wheel 2, central shaft 3, extension spring 4, bilateral ratchet 5, guide pin bushing 6, steel wire temperature 9, clockwork spring 10 compositions such as grade is characterized in that: centre wheel 2 is made up of ratchet and lid 11 with bilateral ratchet.

Advantage of the present utility model is: centre wheel is made up of ratchet and lid with bilateral ratchet, the most tissues of ratchet and lid has only several ribs, weight reduction greatly, only that clockwork spring is terminal fixing during assembling, go into Jiang Gai by the natural direction dish of clockwork spring and load onto and get final product, need not re-use bearing and can satisfy the high-altitude, needed all lengths during construction operation, improve the efficient that assembling is removed stage makeup and costume, reduced cost.

Concrete structure of the present utility model further specifies by its accompanying drawing of following examples:

Fig. 1 is a structure cut-away view of the present utility model

Fig. 2 is a general assembly drawing of the present utility model

Fig. 3 is ratchet figure of the present utility model

Fig. 4 is lid figure of the present utility model

Fig. 5 is the structure chart of prior art.

Differ from autocontrol human body catching devices by housing 1 referring to Fig. 1,2 one kinds of speed, centre wheel 2, central shaft 3, extension spring 4, bilateral ratchet 5, guide pin bushing 6, steel wire temperature 9, clockwork spring 10 compositions such as grade is characterized in that: centre wheel 2 is made up of ratchet and lid 11 with bilateral ratchet.Clockwork spring 10 places the inner chamber of ratchet 2, cover and get final product with lid 11, bilateral ratchet 5 is integrally formed, its two ends headband boss 51 cooperates with hole on the housing 1, play two end effects of axle, referring to Fig. 3,4, ratchet 2, the most tissues of lid 11 has only several ribs, so weight reduction greatly, ratchet 2 is the ratchet with bilateral ratchet, and profile is asymmetric, and the ratchet in left side has a boss 21, there is the axle on a hole and the centre wheel 3 to match in it, the ratchet on right side has in it mating holes 22 to match with the external diameter of lid 11, and the center of lid 11 has a hole to match with central shaft 3, like this centre wheel 2 just by with the ratchet of bilateral ratchet with cover 11 and form one.

The upper aperture of housing 1 is connected with lifting rope during use, can be fixed on thing on the upper fixed structure, safety rope links to each other with safety belt, when human body moved up and down less than retro-speed, the power of ratchet teeth portion bump ratchet 5 ends was less, under extension spring 4 effects, ratchet is passed through on ratchet 5 tops smoothly, under the effect of clockwork spring 10, the steel wire rope 9 of pulling out is in hemicompact always and opens state, can freely work on carefree ground.In case slipping, human body falls, under the effect of acceleration of gravity, steel wire rope 9 is pulled out rapidly, ratchet 2 faster rotational speed, and the power of ratchet bump ratchet 5 ends strengthens, and overcome the pulling force of extension spring 4, make ratchet 5 tops be absorbed in ratchet, as long as load exists, ratchet 2 all can't rotate, steel wire rope 9 can not be pulled out, thereby human body can not be dropped.In case load is removed, at clockwork spring 10, under the effect of extension spring 4, ratchet 5 will break away from automatically with ratchet, can recover operate as normal again.

Claims

1, a kind of speed differs from autocontrol human body catching device by housing (1), centre wheel (2), central shaft (3), extension spring (4), bilateral ratchet (5), guide pin bushing (6), steel wire rope (9), clockwork spring compositions such as (10), it is characterized in that: centre wheel (2) is made up of ratchet and lid (11) with bilateral ratchet

2, speed difference autocontrol human body catching device according to claim 1, it is characterized in that: bilateral ratchet (5) is integrally formed, and its two ends headband boss (51) cooperate with hole on the housing (1).

3, speed difference autocontrol human body catching device according to claim 1, it is characterized in that: ratchet (2) is the ratchet with bilateral ratchet, and profile is asymmetric, the ratchet in left side has a boss (21), have a hole to match with central shaft (3) in it, the ratchet on right side has in it mating holes (22) to match with the external diameter of lid (11).