JPS59189867A - Slow falling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slow descent machine that uses a wire rope to escape from a high place in the event of an emergency such as a fire.

Most conventional slow descent machines use mechanical friction as a braking force, and it is difficult to say that the braking force has reliable and stable automatic speed regulation.

In the example, a fluid coupling is used as a braking device, but since the work done by the impeller to the fluid is used as the braking force, more stable automatic speed regulation is achieved compared to conventional mechanical braking systems. Originally, a fluid coupling was used to transmit the rotation of the impeller as directly as possible to the runner, and its function was to cause the two to slip only if there was some kind of impact.

However, in the present invention, the runner is fixed and used in a state of 1[]1]% slip, and the power consumed thereby is used as braking force, which is completely different from the original function. The purpose of this invention is to provide a new gradual descent machine using a fluid coupling.

Hereinafter, the present invention will be explained based on one embodiment drawing.

(1) is the case of a slow descent machine, which is box-shaped and made of light alloy. (2) is the rotating shaft supported inside the case (1); 5)
A loosely fitted wire reel, the wire reel (
2) is wound with a wire rope (4) having one end fixed to the case (1) and the other end extending outward from the case (1) to which a metal fitting (not shown) such as a hook or carabiner is attached.

(5) is the corresponding wire! J-/L/A stepped part formed on the circumference of one end surface of (2) (a ring gear that is loosely fitted on the two outer circumferences and has teeth on the outer diameter, and is attached to the Nunatsu spring (6) in the axial direction. The movement of the ring gear (5
) is provided with a plurality of serrated locking grooves (2) on the inner diameter of the wire rope (4), and when the wire rope (4) is rotated in the direction in which the wire rope (4) is unraveled, the wire rope (1) -/ L
'(2) The pawl (7) pivotally mounted on the top is locked in the locking groove (5a), and the wire reel (2) and ring gear (5) are integrally rotated in one direction only. It forms a rotating clutch.

(8) is a spring that pivots the pawl (7) and constantly presses it against the inner circumferential surface of the ring gear (5), and the one-way clutch functions as a wire! When I −/l'(2) stops, the wire! due to the flywheel effect of the impeller! J −/l/(2
) to prevent the wire rope (+) from being reversely driven, and to allow the wire rope (+) to move lightly when rewinding the wire rope (+). (9) has a rotating shaft (
This is a speed increasing gear train consisting of gears ((8) and (9b)) loosely fitted to a fixed shaft (10) supported in parallel with the fixed shaft (10), which has a speed increasing ratio relationship. Gear (1) is a ring gear ( 5). (11) 1; j: A fluid coupling supported on a joint shaft 02) fixed to the case (1) on the same axis as the rotating shaft (3).Originally, the fluid coupling (11) ) composing the runners (
11Q rotates almost integrally with the impeller (11b), but is fixed by the runner (11a) & J11 hand shaft (12) of the fluid coupling (11) used in the slow descent machine of the present invention.

Therefore, the fluid coupling (11) always operates in a state of 100% slip and therefore consumes a large amount of power. .

The slow descent machine of the present invention utilizes this loss as a braking force for the wire reel. (13) is the impeller (11b
), the impeller gear fixed to the rotating shaft (6), and the case (
1) Accessories (not shown) are attached to the outside of the building to support and protect the evacuees' bodies, and a metal fitting provided at the end of the wire rope (4) is suspended from a solid part inside or outside the building. The aircraft then begins its descent and evacuates to the ground together with the slow descent aircraft.

Next, the operation of the slow descent machine of the present invention will be briefly explained. When you attach the slow descent aircraft to your body and descend, the wire reel (
2) rotates on the rotation axis (5) due to the weight of the body. At this time, the one-way clutch mechanism causes the sling gear (5) to rotate together with wirey /l/ (2), and the transmission is transmitted to the gears (9a) (9b) of the speed increasing gear train (9). The speed increasing gear train (9) rotates on a fixed shaft (10), and the rotation is connected to a fluid coupling (one impeller (15)) via an impeller gear (15).
It can be conveyed to one person. Generally, the rotation of the impeller (111) is transmitted to the runner (11a) via fluid, but in this case, the launch (11a) is fixed to the case (1) by the joint shaft (12), so the runner ( 11a) causes a large loss of power in the rotating bar.

From the above, in the present invention, the following effects have been found as effects of the slow descender in which the work amount given to the fluid by the impeller is used as the braking force.

(1) It has more reliable and stable automatic speed regulation than the one that uses mechanical friction force as the braking force.

(2) By adding a large weight to the impeller and using it as an inertia brake, the machine can be made to operate slowly at first, thereby eliminating the sense of fear.

(5) Since the conduction torque is proportional to the square of the input rotation speed, it is possible to create a slow descent aircraft with a small difference in descent speed compared to the difference in weight.Ao

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the slow descent machine of the present invention, and Fig. 2 is a cross-sectional view of the main parts of the wirely yV of the present invention.
9 Speed-up gear train 16... Impeller gear 11
Fluid coupling patent applicant Miyano Iron Works Co., Ltd.

Claims (1)

[Claims] A slow descent machine characterized by transmitting rotation from a wire reel around which a wire rope is wound to an impeller via a speed increasing device, and using the amount of work that the impeller gives to the fluid as braking force for the wire reel.