SU1237068A3 - Apparatus for rope descending of human or load - Google Patents

Abstract

A fixed sliding cylinder and an eccentrically mounted auxiliary sliding cylinder are arranged on a baseplate. The rope is guided over both of these, so that it is braked by means of frictional force. The eccentrically mounted auxiliary sliding cylinder is connected to a lever which can be operated by the abseiling person. When it is pressed in a particular direction (upwards), this produces a specific braking effect which results in a slow downward travel of the abseiling device on the rope. If the abseiling person releases the lever, the auxiliary sliding cylinder is then so pivoted about its eccentric mounting by means of the frictional force of the rope that it presses the rope against a further braking surface and thus causes self-clamping or self-holding and consequently braking to a complete standstill. <IMAGE>

Description

2. The apparatus according to claim 1, about tl and -

a gear pair for a kinematic connection of a rotatable cylindrical element with a lever.

3. The apparatus according to claim 1 of t. L. The case is made as U-shaped and provided with a U-invention. The invention is a rescue service and can be used to rescue people or goods.

The purpose of the invention is to increase the reliability of the apparatus.

Fig, I shows the device with an open-krppka; FIG. 2, section A-A in FIG. 15, FIG. 3 - section BB in FIG. 1; Fig, 4 - section bb In Fig, 2; Fig. 5. The appliance with the lid closed; in fig, b - the apparatus with fixed attachment to the object.

The apparatus for lowering a person’s cargo onto a box contains an U-shaped body 1, on the side surface of which a cylindrical protrusion 2 fixed by a rope 3 is fixedly mounted. On the side surface of body 1 a rotary cylindrical element 5 is in contact with the cable 3 by means of a bolt 4 slide, which is mounted to rotate around the bolt 4, while the bolt 4 is placed in the hole 6 made in the rotary cylindrical element of the slide 5 eccentric about its axis. A gear wheel 7 is rigidly connected to a rotatable cylindrical sliding element 5, the axis of rotation of which coincides with the longitudinal axis of the bolt 4. The gear wheel 7 is engaged with the gear wheel 8 rigidly connected to the lever 9, which is mounted with a pin 10 on the lateral surface of the housing 1 can be rotated and protrudes through the recess .11 of the housing to the outside. Opposite the sliding element 5 on the side surface of the housing 1 is located

237068

a different cover with slots for the passage of the rope,

4. Apparatus according to paragraphs. 1-3, about t l and

This is because the projection with the braking surface is located on the side surface of the housing, and the braking surface is made along an arc of a circle.

one

a protrusion 12 with a braking surface 13 formed along a circular arc. Case I is provided with a U-shaped clamp 14, pivotally connected to it by screws 15 and 16. The cover is fixed relative to the case by a screw 17 with a knurled on the head screwed into the threaded hole 18 of the case. The upper and lower portions of the U-shaped ribs are provided with slots 19 and 20 for the passage of the rope 3. To protect the rope 3 as it passes around the cylindrical protrusion 2, a guide block 21 and a guide pin

22. The hull is provided with an element for fastening a descending person or cargo, made in the form of an aperture 23 in the orbit and a carbine 24. The upper end of the rope 3 has means 25 for its attachment at any point from which the descent will be carried out; From here the rope enters the apparatus, rounds Ij5 times around the cylindrical protrusion 2e. Then the rope passes partially around the rotatable cylindrical sliding element 5, interacts with the surface 3 of the deceleration of the protrusion 12 and goes out through the slot 20, as follows. During the descent of a person or cargo, the rope slides along the rotatable cylindrical sliding element 5 and the cylindrical protrusion 2 and leaves the apparatus upwards. In this case, the rope 3 is braked mainly by the braking torque arising when sliding along the cylindrical protrusion 2. However, the magnitude of this braking moment is insufficient to completely stop a

should such a need arise. Further braking is accomplished by turning the

a cylindrical sliding element 5 and a protrusion 12 with a braking surface 13 as follows.

The descending person does not control the lever 9. The rope passes through the device from the bottom up. Due to the frictional force on the rotatable cylindrical sliding element 5, the rope 3 turns the sliding element around the bolt 4 counterclockwise. The rotating cylindrical sliding element 5, which is eccentrically mounted on the bolt 4, presses the cam 3 to the braking surface 13. As the rope slides over the pivotal slip element, there is a tendency to increase the force with which the pivotal sliding element pushes the rope against the braking surface. Due to this, the rope is pinched with self-braking and self-confining between the pivot slip element and the braking surface. This ensures braking and stopping of the vehicle on the α-canal.

A person descending on a rope moves lever 9 upwards. As a result

5 to 15

In this case, the gear wheel 8 rotates counter-clockwise, clockwise, and gear wheel 7 rotates clockwise. Due to this, the rotatable cylindrical sliding element 5, which is rigidly connected to the gear wheel 7, also rotates clockwise and thereby increases the gap between it and the braking surface 13. In this case, the magnitude of the braking force decreases and the descent decreases at a speed depending on the radii of the cylindrical protrusion 2 and the rotatable cylindrical sliding element 5, as well as on the magnitudes of the corresponding girth angles and the weight of the apparatus plus the weight of the descending person. The optimum wrap angle of the rotatable slide 20 is an angle of 180 °.

The device can be fixed on the object. In this case, the descending is attached to the end of the rope 5 3, and the other person controls the descent.

: 3

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phage. 2

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FIG. .7

at 8

Fy

17

FIG.

FIG b

Editor A. Sabo

Compiled by A. Yudahin

Tehred L. Serdyukova Proofreader T. Kolb

3101/59

Circulation 431Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (4)

1. A device for lowering a person or a load on a rope, comprising a body, on the side of which there is a cylindrical protrusion, wrapped around a rope, characterized in that, in order to increase its reliability, it is equipped with a rotary cylindrical sliding element contacting the rope with a lever , as well as a protrusion with a braking surface located opposite the rotary element, while the rotary element is made in the form of an eccentric freely mounted on the axis of the cam fixed on the housing. Fig 1 2. The apparatus by π. 1, characterized in that it has a gear pair for kinematic connection of the rotary cylindrical element with a lever. 3. The apparatus by π. I, which is characterized in that the body is made U-shaped and provided with a U-shaped cover with slots for the passage of the rope, 4. The apparatus according to claims. 1-3, characterized in that the protrusion with the braking surface is located on the side surface of the housing, and the braking surface is made along an arc of a circle.