SU1670340A1 - Device for checking distance between wheels at repressing of wheel pairs - Google Patents

Abstract

The invention relates to a measurement technique and can be used to control the distance between wheels when repressing wheelsets. The purpose of the invention is to increase productivity. In the device, the fixed jaw 2 is rigidly fixed on the hollow rod 1. The position sensors are made in the form of optocoupler pairs 5 and 6. When repressing one wheel, the movable jaw 3 together with element 8 does not move until the hole 10 of element 8 is aligned with the optical axis of the optocoupler pair 6. At this moment an electrical impulse is formed, signaling the end of the pressing. The differential screw 11 has threaded portions 13 and 14, the thread pitch of which is in the ratio of 2: 1, which, when repressing the second wheel, allows it to be displaced by the same distance as the first one. The device is attached to the wheels with clamps 18 and 19. 2 Il.

Description

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The invention relates to a measurement technique and can be used to control the distance between wheels when repressing wheelsets.

The purpose of the invention is to increase productivity by simplifying tuning.

Figure 1 schematically shows the device, a general view; Fig. 2 is the same during the measurement of the position of one of the pressed wheels.

The device contains a hollow rod 1, on which a fixed sponge 2 is rigidly fixed (figure 1). The movable sponge 3 is rigidly fixed to the sleeve 4 mounted with the possibility of longitudinal movement along the rod 1. The device is equipped with an electric signal generating unit, which is triggered when a certain distance between the jaws 2 and 3 is reached, and the mechanism for adjusting the moment of operation of this unit. This unit has a power source and position sensors in the form of optocouplers 5 and 6, each of which consists of an emitter (LED) and a light detector (photodiode) that forms the output pulse. The optocoupler pair 5 is installed inside the rod 1 on the side of the fixed jaw 2. The optocoupler pair 6 is placed inside the cup 7 mounted inside the rod 1 with the possibility of longitudinal movement relative to it.

An element 8 is connected with the sleeve 4 and passed through a hole in the bottom 9 of the sleeve 7. The element 8 is provided with an opening 10 for the passage of the light flux of optocouplers. The mechanism for adjusting the moment of operation of the electric signal generating unit is made in the form of a differential screw 11, rotated by the head 12, which is rigidly connected to one end on the side of the moving jaw.

The screw 11 is made with threaded sections 13 and 14. The threaded section 14 screwed into the rod cover 15 has a thread pitch twice that of the section 13 screwed into the bottom 9 of the cup 7. At the free end of the screw 11 there is a flange 16 mounted with a gap with respect to the support 17 for the end of the screw 11. Clamps 18 and 19 are intended for securing the device on the repressed wheel pair 20.

The device works as follows.

Rotating head 12. twist the spindle 11 out of the cover 15 of the rod 1 until the flange 16 stops against the support 17. At the same time, a gap C is formed between the head 12 and the sleeve 4.

After that, install the device with the jaws 2 and 3 on the repressed wheel pair 20 and fix them with strubicins 18 and 19. The size of the gap C allows the device to be mounted on the wheel pairs 20 with the maximum allowable distance between the wheels.

Due to the rigid kinematic connection of the glass 7 with the rod 1 using

0 threaded connections each position of the screw 11 corresponds to a certain distance A between the optocouplers 5 and 6. Therefore, when screwing the screw 11 until the flange 16 stops against the support 17, the distance A does not

5 depends on the distance between the wheels of the wheel pair 20, and the distance B1 depends on. Rotating the head 12 in the opposite direction, turn the screw 11 until the head 12 stops in the sleeve 4. As a result,

0 that the threaded section 14 has a thread pitch 2 times the thread pitch of section 13, the cup 7 with the opgroina pair 6 moves to the side of the optocoupler pair 5 by an amount that ensures alignment

5 the values of A1 and B1, acquiring the values of A and B, are equal to each other. Thereby, the optical axis of the optocoupler pair 6 automatically halves the distance between the optical axis of the optocoupler pair 5 and the axis

0 holes 10, providing the possibility of a symmetric shift of both wheels of the wheelset.

When repressing one of the wheels, the movable sponge 3 together with the element 8

5 moves relative to the rod 1 until the opening 10 is aligned with the optical axis of the opto-coupler 6, the luminous flux from the radiator of which, passing through the opening 10, hits the light-receiving device, which forms the output pulse, indicating that the wheel is over-pressed (FIG. .2).

When repressing the second wheel, the movable sponge 3 with element 8 moves in

5 the same direction. At the moment of alignment of the aperture 10 with the optical axis of the optocoupler pair 5, an output pulse is generated, similarly to the indicated one, which signals the end of repressing of the second wheel.

Claims (1)

The performance of monitoring the position of the wheels when repressing the wheelset is increased as a result of simplifying the setup of the device by semi-automatic adjustment of the position sensors. The invention of the device for controlling the distance between the wheels when repressing wheel sets, containing a hollow rod, measuring jaws mounted on it, one of which is movable along the rod, an electric signal generating unit with position sensors, a mechanism for adjusting the moment of operation of this block and an element associated with a moving sponge for interaction,. Connections with position sensors, characterized in that, in order to increase productivity, the device is provided with a head mounted inside the rod for longitudinal movement and positioned on the side of the movable sponge and a head mounted rotatably on the end of the rod on the side of the movable sponge with rod, position sensors 0 five made in the form of at least two optocoupler pairs, one of which is installed inside the rod from the stationary sponge, and the other inside the glass, the element for interacting with them is made with a radial hole for the passage of the light flux of the optocouplers and passed through the hole in the bottom of the glass, the mechanism for controlling the moment of operation of the electric signal generation unit is made in the form of a differential screw with a pitch ratio of 1: 2 threaded sections, the threaded section with a larger pitch thread being rigidly connected with head, and another section of the screw is screwed into the bottom of the glass. AND G9 Schig2