RU133532U1 - DEVICE FOR DEMagniizing Rail Joints - Google Patents

Abstract

1. A device for demagnetizing the joints of rails, comprising a rail carriage on which demagnetizing means are installed, made in the form of U-shaped magnetic circuits, each of which contains plates with two inductors placed on them connected to an AC voltage source, and a capacitor block included parallel to the inductors, characterized in that it further comprises mechanisms for the vertical movement of the magnetic circuits and safety rollers mounted on the truck e cores on both sides to cooperate with the rails used in autonomous diesel power, and for completing the capacitor pack cosine kondensatory.2 used as a variable voltage source. The device according to claim 1, characterized in that each mechanism for vertical movement of the magnetic circuit contains a screw with a thread in the upper part mated to a nut to which the helm is fixed, a plate connected to the magnetic circuit fixed to the magnetic circuit, mounted with limited movement in the rails, is fixed on the lower part of the screw fixed on the trolley. 3. The device according to claim 1, characterized in that all the wheels of the rail carriage are electrically insulated. The device according to claim 1, characterized in that all the safety rollers are electrically insulated. The device according to claim 1, characterized in that the wheels of the rail car are equipped with stops. The device according to claim 1, characterized in that the rail trolley is equipped with a handrail for manual movement. The device according to claim 1, characterized in that the rail trolley is equipped with sc

Description

The utility model relates to the technique of demagnetization of ferromagnetic objects, namely, devices for demagnetization of joints of railway rails.

A device is known for demagnetizing ferromagnetic objects, in particular railway rails laid in a path, containing demagnetizing means made in the form of electromagnets located above each rail or a set of permanent magnets that are mounted on a movable vehicle made to move around a demagnetized object (patent for Utility Model of the Russian Federation No. 78363, IPC H01F 13/00, published March 27, 2011).

A device for demagnetizing rails, mounted on a vehicle, comprising a housing in which a horseshoe-shaped magnetic circuit is insulated, consisting of two plates with two windings placed on them, connected to an AC voltage source, and a capacitor block connected in parallel with the windings (patent for a utility model) RF №121259, IPC E01B 11/54, publ. 20.10.2012).

However, these devices have several disadvantages. Both of them are installed on mobile vehicles (railcar, railcar) and cannot work autonomously. The magnetic field created by them is not stable enough, since it is not possible to adjust the air gap between the demagnetization means and the rail heads.

A device for the demagnetization of rails ("Automation, communication, computer science", 2008, No. 7, p. 27-28), containing a magnetic circuit mounted on the platform, consisting of plates with two windings placed on it, an AC voltage source and a capacitor block included parallel to the windings. In one embodiment of the device, the platform is equipped with rollers for mounting on rails and can be driven by a motor vehicle, while the motor vehicle generator is used as an alternating voltage source for magnetic wire windings.

However, due to the difference in the height of the rails at the joints, there is a danger of damage to the magnetic cores, therefore, when the device is operated, the poles of the magnetic cores are located at a distance of 10-50 mm above the rail. This difference in size leads to insufficient accuracy of the current pulses, which does not allow for high-quality demagnetization.

A device for demagnetizing rails is known (Information card No. 20207-P, Krasnoyarsk Center for Scientific and Technical Information and Libraries, Krasnoyarsk, March 24, 2010), selected as the closest analogue of the proposed utility model. The device contains a platform, moved along rails by a motor vehicle, while the motor vehicle generator is used as an AC voltage source for demagnetization means, made in the form of two horseshoe-shaped magnetic cores, on each of which two windings are placed, parallel to which capacitor blocks are connected. During operation, the poles of the magnetic circuits are located at a distance of 40 mm from the rails.

The disadvantages of the known device are the impossibility of its autonomous operation, low efficiency and reliability. The dependence of the power supply of the demagnetization device on the generator of the locomotive leads to the fact that when the device is moved at a speed optimal for demagnetization (3-5 km / h), the generator of the locomotive cannot generate enough power for high-quality demagnetization. A constant distance of 40 mm above the level of the rails during operation of the magnetic cores also does not contribute to creating the level of the magnetic field necessary for high-quality demagnetization of the rails, since devices operating with a minimum air gap of 10 mm are known from the prior art. At the same time, a distance of 40 mm may not be sufficient if it is necessary to overcome crossings and switches.

The utility model solves the problem of improving the safety of railway traffic.

The technical result consists in improving the quality of the demagnetization of the joints of the rails, ensuring the autonomy of the device, increasing its reliability and safety.

To achieve the technical result, a device for demagnetization of rail joints, containing a rail carriage on which demagnetization means are installed, made in the form of U-shaped magnetic circuits, each of which contains plates with two inductors connected to an alternating voltage source, and a unit capacitors, connected in parallel with the inductors, additionally contains mechanisms for the vertical movement of the magnetic circuits and safety rollers mounted on a trolley on both sides of the magnetic circuit with the possibility of interaction with the rails. An autonomous diesel power station was used as an alternating voltage source, and cosine capacitors were used to complete the capacitor block.

Each mechanism for vertical movement of the magnetic circuit contains a screw with a thread in the upper part, mated to a nut to which the steering wheel is rigidly attached, a plate connected to the magnetic circuit fixed to the lower part of the screw, which is installed with the possibility of limited movement in the guides mounted on the trolley.

In addition, all wheels of the rail carriage and safety rollers are electrically insulated.

A pair of wheels of the rail car is equipped with stoppers.

The rail trolley is equipped with a handrail for manual movement and a hitch for connecting to a moving vehicle.

Having a larger capacitance than in known analogues, cosine capacitors are used in the device in smaller quantities, they have the ability to self-repair after breakdowns, are designed to pass large working currents and allow large wires to be connected to them. Due to this, a reduction in energy loss from an AC voltage source is achieved.

The current flowing in each demagnetization circuit, due to the resonance, is seven times higher than the current consumed from the power plant. This ensures that a large magnetic field is obtained with a minimum power of an autonomous diesel power station, which creates a stable magnetic field that improves the quality of demagnetization. In practice, it is established that as a result of using the device, the magnetization of the rails is reduced to 5-6 times.

The presence in the device of the mechanisms of vertical movement of the magnetic cores allows you to fix the magnetic cores in the working position with a minimum air gap between them and the rails of 10 mm, which also contributes to the creation of a uniform magnetic field and improves the quality of demagnetization.

Using the mechanisms of vertical movement in the transport position, the magnetic cores can be raised to a height of 100 mm above the rails. This makes it possible to safely pass obstacles such as crossings and arrows.

The safety of the magnetic circuit also increases the presence in the device of safety rollers mounted on a rail carriage on both sides of the magnetic circuits with the possibility of interaction with the rails. Due to the small diameter and the gap between the rails and rollers, they more accurately copy the irregularities of the path and create additional protection for the magnetic cores.

Figure 1 shows a device for demagnetization of the joints of rails, General view; figure 2 is the same, a top view; figure 3 - the upper part of the screw of the vertical movement mechanism with the helm; figure 4 - mounting the magnetic circuit to the vertical movement mechanism.

A device for demagnetizing rail joints comprises a rail carriage 1 (Figs. 1, 2) with electrically insulated wheels, on the platform of which an autonomous diesel power station 2 with gas outlet is installed, which serves as an AC voltage source for two independent high-quality demagnetization circuits. Each of these circuits contains a block of capacitors 4 connected in parallel, housed in the housing 3, in this case, KPS type cosine capacitors.

The block of capacitors 4 is electrically connected to the control module 5 of the demagnetization circuit and a magnetic circuit 6 mounted above each rail thread, including two inductors 7 mounted on a U-shaped core (not indicated). The windings of the coils are made of a copper bus, which reduces the active resistance of the coils and maximizes the quality factor of the circuit.

Each of the magnetic cores 6 is equipped with a vertical movement mechanism comprising a screw 8 (Figs. 1, 3) with a thread in the upper part mating with a nut 9 to which the steering wheel 10 is rigidly attached. The nut 9 rests on the bearing assembly 11 mounted on the plate 12, mounted on racks 13, rigidly mounted on the platform of the rail trolley 1. Guides 14 are rigidly connected to the racks 13, the lower part of which is attached, with the possibility of height adjustment using spacers 15, brackets 16.

On the bottom of the screw 8 (Figs. 1, 4), a plate 17 is fixed, to which a magnetic circuit 6 is attached, using fasteners.

The brackets 16 provide the position of the magnetic cores above the rails in the working position with a constant air gap of 10 mm, which makes it possible to exclude their contact when the platform moves. The vertical movement mechanism provides the possibility of lifting the magnetic circuit in the transport position up to 100 mm above the rails.

On both sides of the magnetic circuits 6, electrically insulated safety rollers 18 are attached to the platform of the trolley with a diameter smaller than its wheels, which are installed with the possibility of interaction with the rails. In the initial position, a gap is provided between the rail and the roller, which should be no more than 5 mm.

To connect with a moving vehicle, for example, MPT motovoz, the platform is equipped with a hitch 19 (figure 1). To ensure the safety of movement, the hitch attachment is duplicated by a cable 20.

The pair of cart wheels closest to the hitch, with the purpose of blocking, is equipped with stoppers 21. A handrail 22 is fixed at the end of the platform to manually move the device for demagnetization along the rail track.

The rail car is equipped with four eyes 23 for gripping with lifting devices when moving it to a loading platform of a mobile vehicle equipped with wheel supports (not shown).

In preparation for operation by a lifting device, the rail carriage 1 (Figs. 1, 2), with the wheels 21 blocked with the help of stoppers, is removed from the loading platform of a movable vehicle and mounted on a rail track. If it is intended to operate a demagnetizing device in conjunction with a moving vehicle, for example, a locomotive, they are connected by a hitch 19 and a cable 20.

A device for demagnetizing the joints of rails as follows.

The wheels of the rail carriage 1 are removed by the stoppers 21 (FIG. 2). Then, rotating the steering wheels 10 (Figs. 1, 3) of the vertical movement mechanisms, lower the plates 17 together with the magnetic cores 6 to the working position, until they support the brackets 16, providing a minimum air gap between the magnetic circuits and the rails of 10 mm.

They include diesel power station 2 and control modules 5. The voltage from the diesel power station is supplied to both demagnetization circuits. The current in the demagnetization circuit due to resonance increases seven times in relation to the current consumed from the power plant. This ensures that a larger magnetic field is generated by the magnetic cores and, therefore, a more pronounced demagnetizing effect.

Next, by moving the device manually or with a moving vehicle at a speed of about 3 km / h, demagnetization of the rails is performed. In the case of a significant difference in the height of the rails at the joints, safety rollers 18 interact with them, copying the irregularities of the rail track and providing additional safety for the magnetic cores 6.

To overcome obstacles in the form of crossings and arrows, using the handwheels 10 (Fig. 1) and screws 8, the plates 17 of the mechanisms of vertical movement together with the magnetic circuits attached to them are raised to the transport position - to a safe height above the level of the rails, providing an air gap of up to 100 mm .

After completing work with the demagnetization device, the diesel power station 2 and the control modules 5 are turned off.

Then, rotating the steering wheels 10, raise the magnetic circuits 6 to the transport position and block the pair of wheels of the rail carriage with stoppers 20.

If the rail trolley was connected to the movable vehicle by the hitch 19 and the cable 20, they are disconnected and the trolley is mounted using a lifting device on the loading platform of the movable vehicle.

Claims (7)

1. A device for demagnetizing the joints of rails, comprising a rail carriage on which demagnetizing means are installed, made in the form of U-shaped magnetic circuits, each of which contains plates with two inductors placed on them connected to an AC voltage source, and a capacitor block included parallel to the inductors, characterized in that it further comprises mechanisms for the vertical movement of the magnetic circuits and safety rollers mounted on the truck e cores on both sides to cooperate with the rails used in autonomous diesel power and cosine capacitors used for acquisition of the capacitor pack as a variable voltage source. 2. The device according to claim 1, characterized in that each mechanism for vertical movement of the magnetic circuit contains a screw with a thread in the upper part mated to a nut to which the helm is fixed, a plate connected to the magnetic circuit fixed to the magnetic circuit, mounted with limited movement, is fixed on the lower part of the screw in rails mounted on a trolley. 3. The device according to claim 1, characterized in that all the wheels of the rail trolley are made insulated. 4. The device according to claim 1, characterized in that all the safety rollers are made insulated. 5. The device according to claim 1, characterized in that the wheels of the rail trolley are equipped with stoppers. 6. The device according to claim 1, characterized in that the rail trolley is equipped with a handrail for manual movement. 7. The device according to claim 1, characterized in that the rail trolley is equipped with a hitch for connection with a movable vehicle.

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