SU1218306A1 - Bed for testing escalator runners - Google Patents

Abstract

BACKGROUND OF THE INVENTION The invention relates to stands: for testing escalator runners. The purpose of the invention is to improve the performance of the stand by bringing the test conditions to natural. The stand consists of a base 1 with racks 2 mounted on it, to the upper ends of which frame 3 is attached. To the base 1 and i? I. /

Description

Frame 3 is attached to shaft A, which is connected to a drive located at base 1. Drum 5 is mounted on shaft 4 to allow the key to move along the key along the shaft 5. A spring 6 is attached to shaft 4. A ring 8 is attached to the lower end of drum 5. Its outer surface in scan represents a sinusoid. The brackets 11 are located under the ring 8. The drum 5 is worn and attached to it is a ring. The invention relates to test equipment, namely, test stands for runners scKarfaTo-, pa.

The purpose of the invention is to improve the performance of the stand by bringing the test conditions to real ones.

FIG. Figure 1 shows a general view of the test stand for Escalator torus runners, fig. 2 shows section A-A in FIG. one. .

The test stand for the escalator runners consists of a base 1 with racks 2 installed on it, to the upper ends of which frame 3 is attached. Base 4 and frame 3 are attached to shaft 4 connected to the drive located at base 1 (not shown). On the shaft 4, the drum 5 is mounted for movement along the key along the shaft. From above on c: .4. there is a spring 6 clamped between the nut 7 screwed onto the shaft 4 and the upper end of the drum 5. The ring 8 is attached to the lower end of the drum 5. Its outer surface in development is a sinusoid. The rollers 9 are in contact with this surface 10, mounted in brackets 11. Staples 11 are located under the ring 8 at diametrically opposite points of its projection, on the base 1 and attached to this base. On the drum 5. Wears and attached to it the ring 12 with the outer surface of the shape of the ellipse. The runners 13 are pressed to the surface of the rings 12, the axes 14 of which are interconnected by rods 15. The ends of the axes 14 are arranged with a gap between the frames

218306

tsa 12 with the outer surface of the ellipse shape. Under the action of the load 26, the levers 21 t gami 15 press the drum 5 of the sliders 13 with a force determined by the weight of the load 26. When the drum 5 rotates at a constant speed, the sliders 13 are pressed to it along the elliptical surfaces of the rings 12. The drum 5 performs under the action of the spring 6, reciprocating movements along the vertical shaft 4.2.

16, forming a lattice 17 attached by posts 18 to the base 1 and the frame 3. The end of one of the outermost rigs 15 by the rod 19 passing through

frame 16, rigidly attached to them. The second end of the extreme tg 15 by the rod 20 is connected to the levers 21, which rotate around the axis 22, passing through the frames 16. Through the free Hbrii end of the levers 21 passes the connecting rod 23. To the middle of it is attached the end of the cable 24, which bends around the block 25 which is mounted on one of the racks 2. To the other end

the cable is suspended load 26.

Under the action of the load 26, the levers 21 t gami 15 are pressed against the drum 5 by the sliders 13 with a force determined by the mass of the load 26. When the drum 5 rotates at a constant speed, the sliders 13 against it are rolled along the elliptical surfaces of the rings 12. As a result periodically repeated accelerations normal to the rolling surface occur. The magnitude of the accelerations is determined by the shape of the ellipse. When rolling rollers 9 attached to the lower end of the drum by a ring 8 with a sinusoidal surface, the drum 5 performs a reciprocating motion along the vertical shaft -4 under the action of the spring 6.

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Claims (1)

Invention Formula A test stand for es caliper runners, containing a base with a drum mounted in it with a shaft, the shell of which is designed to be placed on it 31 The ranges of the test runners and their attachment to the drum by means of t and loading mechanisms of the stand, characterized in that, in order to improve the operating characteristics of the stand by approximating the test conditions to full-scale ones, the drum is designed to move freely along its shaft, This stand is provided with a ring with a sinusoidal surface fixed on one of the ends of the drum and placed on the base of two rollers 18306Л mi, interacting with the specified ring, worn on the bardga ban shell, rings with an ellipsoid outer surface, made with the possibility of contact with the test runners, said rods are made with the possibility of hinged connection of the axes of the test runners with each other, as well as wounds, hinges fixed to the base of the stand by means of racks to divide the test sliders into rows. ) No.