RU216789U1 - ROTATING SUSPENSION OF POINT LINE BUSBAR - Google Patents

Abstract

The utility model relates to swivel suspensions of a busbar of a contact network and can be used to create power supply systems for electric trains and electric locomotives in the service area. The swivel suspension of the contact network busbar contains a beam, one end of which is pivotally connected to the support element. At the second end of the beam, an insulator, a lug, a height-adjustable post, and a busbar trunking holder are successively fixed. The tip and the beam are connected to the ground conductor. EFFECT: technical result consists in reducing the time for maintenance of the bus duct of the contact network by increasing the reliability and safety of operation of the swivel suspension of the bus duct.

Description

The utility model relates to swivel suspensions of a bus duct of a contact network and can be used to create power supply systems for rail electrified rolling stock in the service area.

To ensure the maintenance of electric trains and electric locomotives, it becomes necessary to remove a rigid contact network from the overhead space. For this purpose, groups of swivel suspensions are used, forming a system for removing the contact busbar, which serves to free the space above the car from the contact network and ensure the safety of operating personnel during routine maintenance.

A swivel suspension of a contact busbar is known (Patent of the Russian Federation No. RU 144854 U1 IPC B60M 1/20 Swivel suspension of a contact busbar of the power supply system of high-speed electric trains / Mamin Sh.A., Dmitriev A.V., Nekrasov A.N. - Applicant and patent holder Limited Liability Company "RailMatic" (LLC "RailMatic") - No. 2014102890/11 applied on January 29, 2014, published on September 10, 2014), containing a beam, one end of which is pivotally mounted in a bracket. At the second end of the beam, an insulator, a tip in the form of a corner element with side ribs, a swivel vertical post that can be adjusted in height, and a busbar trunking holder are successively fixed. The bracket is mounted on a vertical surface. With the help of an electric drive, the beam can rotate around the hinge, thus moving the busbar trunking fixed in the busbar trunking holder. A grounding stud is installed in the bracket to equalize the potential of the suspension with respect to the metal structure of the building and structure.

A bus duct is a rigid current duct designed for power transmission, consisting of bare or insulated conductors (tires).

The contact network is a technical structure that serves to transmit electricity from traction substations to electric rolling stock.

The disadvantage of this technical solution is the low level of reliability and safety of the busbar swivel suspension. Due to this, the risk of emergencies increases and, as a result, leads to an increase in the time for servicing the bus duct of the contact network.

The essence of the proposed technical solution lies in the fact that in the well-known swivel suspension of the bus duct of the contact network, containing a beam, one end of which is pivotally connected to the support element, and an insulator, a tip, a rack made with the possibility of height adjustment, and busbar holder, lug connected to earth conductor.

The development and refinement of the proposed technical solution are the following features:

an insulator is fixed between the tip and the stand;

a bracket with an insulator is installed on the beam, the insulator being connected to the ground conductor;

a grounding bracket with a copper bus is fixed on the supporting element, made in such a way that in the retracted position of the beam, the conductor of the busbar is in contact with the copper bus on the grounding bracket;

the support element includes a rotation angle sensor configured to transmit a signal at a given position of the beam;

a bracket with an insulator is installed on the support element, on which the contact clamp of the supply cable is fixed, and a bracket with an insulator is installed on the beam, connected to the electrical connector of the cable for supplying high voltage to the busbar, while these brackets are made in such a way that the electrical connector is in contact with the contact clamp only in the extended position of the beam;

the beam is equipped with a light signaling unit configured to transmit a signal at a given voltage in the contact network and at a given position of the beam;

the support element has a housing on which limit switches are installed, configured to transmit a signal when the beam reaches a predetermined position.

The connection of the tip and the beam with a grounding conductor reduces the likelihood of electric current from the busbar and the high voltage supply unit to the electrically conductive elements of the swivel suspension and, as a result, reduce the likelihood of electric shock to operating personnel. Thus, the protection of the metal structures of the contact network and the building from leakage currents and short circuits during the "breakdown" of insulators and the busbar holder by high voltage is ensured, which leads to an increase in the safety of operation of the busbar swivel suspension.

Installing an insulator between the lug and the post makes it possible to further reduce the likelihood of electric current from the busbar trunking and the high-voltage supply unit on the electrically conductive elements of the rotary suspension and, as a result, reduce the likelihood of electric shock to personnel, which leads to an additional increase in the safety of operation of the rotary suspension of the busbar trunking .

The bracket with an insulator allows you to fix the grounding conductor at the place of its supply to the grounding bracket, which further increases the safety of the busbar swivel hanger operation.

The design, in which a grounding bracket with a copper busbar is fixed on the supporting element, made in such a way that in the retracted position of the beam, the busbar conductor contacts the copper busbar on the grounding bracket, provides grounding of the busbar trunking, which further increases the safety of operation of the busbar swivel hanger.

The rotation angle sensor installed in the support element, for example, on the rotation shaft, transmits signals about the current position of the beam to the light and / or sound signaling unit, which notifies personnel about the presence or absence of voltage in the contact network, as well as about the movement of the busbar trunking from extended to retracted position and vice versa. This further increases the operational safety of the busbar swivel hanger.

A structure in which a bracket with an insulator is installed on the support element, on which the contact clamp of the supply cable is fixed, and a bracket with an insulator is installed on the beam, connected to the electrical connector of the cable for supplying high voltage to the busbar, while these brackets are made in such a way that the electrical the connector was in contact with the terminal only in the extended position of the beam, it allows to mechanically disconnect the high voltage supply circuit to the busbar and stop the voltage supply in any position of the beam except for the working one. Thus, in addition to the usual shutdown of electricity, for example, by a knife switch, mechanical disconnection of cables is used, which further reduces the risk of accidents and increases the safety of operation of the busbar swivel hanger, since it excludes the supply of current, even if voltage is accidentally applied.

The light signaling unit notifies the personnel about the presence or absence of voltage in the contact network, as well as about the movement of the beam from the extended to the retracted position and back. This further reduces the risk of accidents and increases the operational safety of the busbar swivel hanger.

The limit switches can send a signal (for example, light, sound, signal to turn off the power, etc.) when the beam reaches a predetermined position. For example, when the beam is in the extended position, the limit switches can send a light and/or audible signal to warn that the beam is extended and the busbar is energized. At a predetermined (for example, retracted by a few degrees) position of the beam, the limit switches can send a signal to turn off the power supply to the high voltage supply unit. This further reduces the risk of accidents and increases the operational safety of the busbar swivel hanger.

The extended position and the retracted position of the beam are the extreme positions that the beam reaches during the operation of the overhead catenary system.

An active swivel suspension means a swivel equipped with a drive.

Passive swivel suspension means a non-powered swivel suspension.

Graphic materials are presented for a better understanding of the utility model, but this technical solution is not limited to the option presented on them.

In FIG. 1 shows a general view of the claimed swivel hanger, a passive swivel hanger with the beam in the extended position.

In FIG. 2 shows a general view of the claimed swivel hanger, an active swivel hanger with the beam in the retracted position.

In FIG. 3 shows a general view of the claimed swivel suspension, active swivel suspension in working position with a closed high voltage supply unit.

In FIG. 4 shows a general view of the claimed swivel suspension, the active swivel suspension in the retracted position with the high voltage supply unit open.

In FIG. 5 is an enlarged view of a portion of the claimed swivel hanger in the retracted position of the beam, the busbar conductor in contact with the copper busbar on the ground bracket.

The swivel suspension of the busbar of the contact network contains a beam 5, one end of which is pivotally connected to the supporting element 1.

The supporting element 1 contains a housing 2 with bearing supports 3, in which the rotation shaft 4 of the beam 5 is installed, and stops 6, which serve to limit the movement of the beam 5.

The support element 1 is configured to modify the direction of rotation (right or left) of the beam 5 depending on the location of the parts of the body 2.

The housing 2 allows you to attach the support element 1 to various types of supporting metal structures of the building and special metal structures for fastening the contact network with the ability to adjust in height and in the horizontal plane.

Beam 5 is equipped with flanges and a light signaling assembly 7. Flanged fastening of beam 5 allows you to change its length depending on the distance from the axis of the track to the point of attachment of the support element 1 to the supporting metal structure of the contact network, and also, if necessary, change the cross-sectional profile of the beam 5. Node light signaling 7, enclosed in a protective translucent casing, with a light signal of the corresponding color notifies the personnel about the presence or absence of voltage in the contact network, as well as the movement of the busbar 8 from the extended to the retracted position and back. When the gimbal moves, an audible alert is also activated.

An insulator 10 is fixed at the free end of the beam 5 with the help of a fastening cup 9. The insulator 10 is selected depending on the value of the rated voltage of the electric current supplied to the busbar 8.

Tip 11 is connected to insulator 10 on one side, and to insulator 25 on the other. Tip 11 can have any shape known from the prior art, for example, pyramidal, cubic, round, cylindrical, and so on. In this embodiment, the tip 11 is made in the form of an angular element with side ribs.

Rack 12 is made with the possibility of height adjustment and rotation.

The rack 12 is connected to the holder 13 of the busbar 8. The holder 13 is made in the form of a mounting plate and two removable profile grippers, fixed to the plate with bolts through the pads. The grips are made in the form of bars located opposite with horizontal slotted holes for placing the protrusion of the busbar 8 in them.

The tip 11 and the beam 5 are connected to the ground conductor 16, which connects the elements of the swivel suspension with the ground line. Ground conductor 16 may be attached to lug 11 and beam 5 by any method known in the art. In this embodiment of the utility model, the conductor 16 is attached to the lug 11 and the beam 5 by means of a rubber band.

A bracket 14 with an insulator 15 is installed on the side surface of the beam 5. The insulator 15 is connected to the ground conductor 16.

The ground bracket 17 is fixed on the support element 1 and is connected to the ground line. With the beam 5 in the retracted position, the conductor 34 of the busbar 8 is connected to the copper busbar 35 on the ground bracket 17, thus ensuring the grounding of the busbar 8.

In FIG. 5 shows the conductor conductor 34 of the busbar, its sheath 38 and elements 39 for connecting sections of the busbar.

The conductors of the ground loop are attached to the insulator 26 and have taps to the insulator 15 and the ground bus of the ground bracket 17.

To rotate the beam 5, a drive 18 is used, preferably electromechanical, connected to the rotation shaft 4. If necessary, the electromechanical drive can be replaced by a hydraulic, pneumatic or other type of drive.

The control board 19 provides transmission of signals from the limit switches 20 and the rotation angle sensor 21 through the data transmission line to the programmable logic controller and the control signal from the programmable logic controller to the rotary suspension drive 18.

Limit switches 20 (for example, electromechanical) are placed on the housing 2 in such a way that they signal that the beam 5 has reached one of the extreme positions (extended or retracted).

The rotation angle sensor 21, mounted on the rotation shaft 4, transmits signals about the current position of the beam 5.

The high voltage supply unit 22 consists of two parts: one part is fixed on the swing shaft unit 1 and connected to the power source, the other part is fixed on the beam 5 using the bracket 23 and connected to the terminal 24 on the busbar 8. Parts of the high voltage supply unit 22 are connected when the beam 5 is extended, forming an electrical circuit from the power source to the busbar 8.

A bracket 28 with an insulator 27 is mounted on the support element, on which the terminal clamp 37 of the supply cable 40 is fixed, which is connected to a power source. A bracket 23 with an insulator 30 is installed on the beam 5, connected by means of a lug 29 to the electrical connector 36 of the cable 31 for supplying high voltage to the busbar 8. The brackets 28 and 23 are made in such a way that the electrical connector 36 is in contact with the terminal clamp 37 only in the extended position of the beam 5. Thus, with the extended position of the beam 5, the power cable 40 is connected to the cable 31 for supplying high voltage to the busbar 8, forming an electrical circuit from the power source to the busbar 8.

The cable 31 is connected to the beam 5 by means of an insulator 32 placed on the lug 11. The wire 33 connects the cable 31 and the terminal clamp 24 connected to the busbar 8.

When the beam 5 is in the extended position, the electric current flows from the supply cable 40 to the terminal 37, the electrical connector 36, the cable 31, the wire 33, the terminal 24, and then it is fed to the busbar 8.

The automated control system for rotary suspensions is implemented on the basis of a programmable logic controller. The system consists of an automatic control panel with a programmable logic controller and a control panel (the control panel can be placed in a separate control panel). In addition, motorized swivel hangers are equipped with control panels with interface modules connected by a data transmission line to a programmable logic controller. Also, by means of a data transmission line and signals of the "dry contact" type, the system is connected to the cabinets for supplying voltage to the busbar 8. The controller processes the signals from all position sensors (limit switches 20 and the rotation angle sensor 21), issues control signals to the electric drives 18 rotary hangers and a signal to supply voltage to the busbar 8, monitors the operating and emergency conditions of the equipment, checks the fulfillment of all conditions for applying / removing voltage and extending the suspensions, gives a signal to turn on the sound alert, generates emergency messages, provides protection for personnel from operator errors, access to registered users and storage data.

The described example of implementation is given solely for the purpose of illustrating and confirming the possibility of obtaining a technical result, it is obvious that other embodiments are possible without changing the essence of the utility model.

This technical solution provides an increase in the reliability and safety of operation of the busbar swivel hanger.

Claims (8)

1. The rotary suspension of the busbar of the contact network, containing a beam, one end of which is pivotally connected to the supporting element, at the second end of the beam, an insulator, a lug, a rack made with the possibility of height adjustment, and a busbar holder, characterized in that the lug is connected to ground conductor. 2. Rotary suspension according to claim 1, characterized in that an insulator is fixed between the tip and the post. 3. Swivel suspension according to claim 1, characterized in that a bracket with an insulator is installed on the beam, and the insulator is connected to the ground conductor. 4. Swivel suspension according to claim 1, characterized in that a ground bracket with a copper bus is fixed on the support element, made in such a way that in the retracted position of the beam, the busbar conductor contacts the copper bus on the ground bracket. 5. Rotary suspension according to claim 1, characterized in that the support element contains a rotation angle sensor, configured to transmit a signal at a given position of the beam. 6. Swivel suspension according to claim 1, characterized in that a bracket with an insulator is installed on the support element, on which the contact clamp of the supply cable is fixed, and a bracket with an insulator is installed on the beam, connected to the electrical connector of the cable for supplying high voltage to the busbar, with In this case, said brackets are made in such a way that the electrical connector contacts the terminal clamp only in the extended position of the beam. 7. Swivel suspension according to claim 1, characterized in that the beam is equipped with a light signaling unit, configured to transmit a signal at a given voltage in the contact network and at a given position of the beam. 8. Rotary suspension according to claim 1, characterized in that the support element has a housing on which limit switches are installed, configured to transmit a signal when the beam reaches a predetermined position.

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