RU204233U1 - Electric drive of the crossing barrier - Google Patents

Abstract

The utility model relates to the means of ensuring traffic safety on railway transport, in particular to electric drives, and can be used as part of crossing barriers installed at level crossings. The essence of the utility model consists in an electric drive of a crossing barrier device containing a body, an electric motor, a unit for regulating the characteristics of a rotational motion transmitted by an electric motor, and a rail barrier movement unit containing a gate, on the working surface of which there are working teeth and a locking tooth. In contrast to the prototype, the working surface of the gate in the part of the gate opposite from the locking tooth is made flat. The technical result to be achieved by the utility model is to reduce the risk of failure of the electric drive of the crossing barrier device. 2 c.p. f-ly, 2 dwg

Description

The utility model relates to the means of ensuring traffic safety on railway transport, in particular to electric drives, and can be used as part of crossing barriers installed at level crossings.

There is a known device for fencing a railway crossing containing a drive, which consists of an electric motor, a clutch, a gearbox, a screw and a gear nut, while the barrier element is equipped with shock absorbers, lever elements and clamps associated with the drive [SU 1794773A1, publication date: 15.02.1993 g., IPC: B61L 29/02].

The advantages of the technical solution include increased protection of the device for fencing a railway crossing from impact on the obstruction element of vehicles and reducing the effect of dynamic forces. However, the disadvantages of the device are the complexity of the device, in particular the lever mechanism and the latches, and the impossibility of folding the plate in the opposite direction, which creates an additional risk of jamming and / or damage to the elements of the barrier element mechanism. In addition, the device does not adequately provide the possibility of a safe exit of the vehicle from the crossing area without damaging the mechanism of the device or its elements.

Known barrier device containing a drive with a gate, equipped with a safety mechanism located between the drive gate and the drive bracket and consisting of two levers - long and short, three rocker arms - middle and two lateral, two compression springs and providing a separate movement of the cover from the gate [RU 2554909C2, publication date: 06/27/2015, IPC: B61L 29/02].

The advantages of this technical solution include higher operational safety of the device due to the presence of a safety mechanism, which provides a quick forced lowering of the cover of the barrier device onto the support base when the drive gate is extended without destroying the drive mechanism and twisting the drive shaft to ensure that the vehicle leaves the crossing area. and also the resistance of the drive mechanism to deformation when hitting the cover of the vehicle crossing barrier. However, the disadvantages of the known technical solution also remain the high complexity and insufficient reliability of the design of the safety mechanism, consisting of several elements, which, being interconnected, can fail if at least one of them breaks, for example, a lever or rocker arm.

As a prototype, a device for fencing a railroad crossing was selected, consisting of several functional blocks and barrier elements with drives containing a gate for raising and lowering the cover of the railroad crossing guardrail device, while a pad is installed on one side of the locking tooth of the main shaft gear of a typical switch drive and removed part of the fixing sector, which eliminates the obstacle of the drive to lowering the cover [RU 2066649C1, publication date: 20.09.1996, IPC: B61L 29/00, B61L 29/02].

The advantages of the prototype over the known technical solutions include the possibility of free lowering of the cover of the railway crossing protection device in order to ensure the possibility of leaving the crossing of vehicles and prevent damage to the drive parts without resorting to the safety mechanism, which is achieved by the lining of the gear mounted on the locking tooth the main shaft, which blocks the possibility of fixing the cover in the raised position by the locking sector of the shaft.

However, the disadvantage of the prototype is the low reliability of the drive design, which is due to the presence in the gear transmission of an element with low wear resistance, in particular the presence of an installed lining, in addition, the need to remove a part of the fixing sector of the main shaft further complicates the design and manufacturing process of the device, which together leads to an increased the risk of failure of the entire electric drive in case of wear of the lining on the locking tooth of the main shaft gear or in case of defects in the locking sector.

The technical problem to be solved by the utility model consists in the need to improve the reliability of the electric drive of the barrier crossing device.

The technical result to be achieved by the utility model is to reduce the risk of failure of the electric drive of the crossing barrier device.

An additional result to be achieved by the utility model is to simplify the design of the electric drive of the crossing barrier device.

The essence of the utility model is as follows.

The electric drive of the crossing barrier device contains a housing, inside which an electric motor is installed, a unit for regulating the characteristics of a rotary movement transmitted by an electric motor, a unit for moving a railroad barrier connected to a unit for controlling the characteristics of a rotational movement transmitted by an electric motor, and containing a gear train formed by a pinion shaft and a gate, when In this case, the gate has a working surface on which working teeth and a locking tooth are located. In contrast to the prototype, the working surface of the gate in the part of the gate opposite from the locking tooth is made flat.

The rail barrier movement unit is designed to raise and lower the cover of the crossing barrier device, is located in the electric drive housing, is connected to the unit for controlling the characteristics of the rotational movement transmitted by the electric motor, and contains a base and a gear train, and may also contain a gate position sensor.

On the base of the rail barrier movement unit, other elements of this unit are installed and fixed.

The gear transmission of the rail barrier movement unit, with the help of which the cover of the crossing barrier device is raised or lowered, is formed by a pinion shaft and a gate.

The gear shaft of the gear transmission unit for moving the railroad barrier is connected to the reducer of the unit for regulating the characteristics of the rotational movement transmitted by the electric motor and serves to move the gate of the gear transmission. The pinion shaft contains a locking tooth for unlocking and locking the gate when the cover is closed, as well as several working teeth, the number of which must be sufficient to engage with the gate of the gear transmission and move it.

The gate of the gear transmission of the railroad barrier movement unit is intended for mechanical action on the cover of the crossing barrier device through the connecting elements, as a result of which the cover of the barrier barrier device is lifted and lowered. The gate is a movable element that meshes with the pinion shaft and contains a working surface and an element for connecting to the cover of the crossing barrier. The gate can perform reciprocating movements and take the extreme retracted position corresponding to the extreme lower position of the cover of the crossing barrier device, and the extreme extended position corresponding to the extreme upper position of the cover of the crossing barrier device. The gate can be made in the form of a rail of circular or rectangular cross-section or a plate, as well as in the form of another element providing the possibility of lifting and lowering the cover of the crossing barrier.

The working surface is represented by the outer surface of the gate, which engages with the pinion shaft of the rail barrier movement unit. For this, the working surface contains a locking tooth and working teeth located on one side of the gate, while the working surface of the gate in the part of the gate opposite from the locking tooth is made flat.

The locking tooth of the working surface of the gate is designed to lock the gate with the working tooth of the pinion shaft in the extreme retracted position and is located from one of the edges of the working surface, next to the element for connecting to the cover of the crossing barrier. The locking tooth is a projection with a beveled top and has a nearby groove for locking the pinion shaft with the working tooth.

The working teeth of the working surface of the gate are located between the locking tooth and that part of the gate, which is opposite from its working tooth, is made flat. Thanks to the working teeth, torque is transmitted from the pinion shaft to the gate, while their number should be sufficient to mesh with the pinion shaft of the gear transmission, and the distance between the teeth should be equal. The working teeth can have a trapezoidal or triangular shape and, at the same time, they can be made narrower than the locking tooth.

The flat working surface of the gate serves as a stop for the locking tooth of the pinion shaft in the extreme extended position of the gate. Thus, the flat working surface does not have a second locking tooth and thereby ensures that the gate is not locked in the extreme extended position, allowing the cover of the barrier device to forcibly lower together with the gate, which prevents the destruction of the electric drive mechanism, thereby reducing the risk of failure of the electric drive of the barrier device moving.

The element for connection with the cover of the gate crossing barrier is intended for the kinematic connection of the gate and the cover of the crossing barrier. The element for connection with the cover of the gate crossing barrier can be represented by lugs, a screw or bolt hole, or another element for a detachable connection.

The electric drive of the level crossing protection device may contain a gate position sensor installed in the rail barrier movement unit so as to control the gate position. The gate position sensor ensures the accuracy of the electric drive and the timely change in the gate position, which makes it possible to reduce the number of ramps on the cover of the crossing barrier and forced lowering of the cover, thus reducing the risk of failure of the electric drive and providing additional reliability of the operation of the electric drive of the level crossing protection device. The gate position sensor can be a contact or non-contact sensor. The electric actuator may contain one or more gate position sensors.

The unit for controlling the characteristics of the rotational movement transmitted by the electric motor is located in the housing of the electric drive and serves to transfer the required rotation speed from the electric motor to the mechanical elements and control the characteristics of the rotational movement, for which it at least contains a gearbox and a clutch.

The gearbox of the unit for regulating the characteristics of the rotary motion transmitted by the electric motor is a typical mechanical gearbox that converts the power characteristics of the electric motor.

The clutch of the unit for regulating the characteristics of the rotational movement transmitted by the electric motor directs mechanical energy from the electric motor to the gearbox without changing its value. The clutch can be made of friction, cam, cam-disk or other other clutch that provides connection of the shafts.

The electric motor is located in the body of the electric drive of the crossing barrier and serves to convert electrical energy into mechanical energy, thereby driving the elements of the remaining units of the electric drive. The electric motor can be represented by a low-speed AC electric motor (850 rpm) to reduce the dynamic load on the electric drive mechanism and the speed of movement of the cover and counterweight of the crossing barrier device, which makes it possible to reduce wear of the electric drive parts of the railway crossing protection device, reducing the risk of electric drive failure and increasing its reliability.

The body of the electric drive of the crossing barrier is a container, which may contain a cover, inside which the electric motor and functional units are located. The housing of the electric drive provides protection of components and the electric motor from external influences.

The utility model can be made from known materials using known means, which indicates its compliance with the criterion of patentability "industrial applicability".

The utility model is characterized by significant features previously unknown from the prior art, namely that the working surface of the gate in the part of the gate opposite from the locking tooth is made flat, due to which there is no gate locking in the extreme extended position, therefore, it is possible to lower the cover of the crossing barrier not only by reverse rotation of the pinion shaft, but also by forcibly lowering the cover of the barrier device to the lowest position in the event of a force from 80 to 150 kgf, for example, when the cover of the barrier device is applied to the vehicle.

Thus, the cover of the level crossing device is not an obstacle to the exit from the crossing area of a vehicle that has found itself in the crossing area until the cover of the level crossing device is lifted. In the case of forced lowering of the cover of the crossing barrier device, the impact exerted on the gate moves it to the extreme retracted position, preventing twisting of the pinion shaft or damage to other parts of the electric drive mechanism.

As a result of the above, the need for the use of additional modifications of the pinion shaft or gate of the electric drive of the barrage device is eliminated.

Due to this, the technical result is achieved, which consists in reducing the risk of failure of the electric drive of the crossing barrier device, thereby increasing the reliability of the electric drive of the crossing barrier device.

Additionally, the presented design of the gate eliminates the need to make it with a locking tooth or to install the safety mechanism of the electric drive and thereby simplifies the design of the electric drive of the level crossing protection device, in particular the design of the gate of the gear transmission.

The utility model is characterized by a set of essential features previously unknown from the prior art, which testifies to its compliance with the “novelty” criterion of patentability.

The utility model is illustrated by the following figures.

FIG. 1 - Electric drive of the crossing barrier, top view.

FIG. 2 - Gate of the gear transmission of the rail barrier movement unit of the electric drive of the barrier crossing device, side view.

To illustrate the possibility of implementation and a more complete understanding of the essence of the utility model, an embodiment thereof is presented below, which can be changed or supplemented in any way, and the present utility model is by no means limited to the presented embodiment.

The electric drive of the crossing barrier device comprises a housing 1, inside which an electric motor 2 is installed, represented by a low-speed AC electric motor (850 rpm), a unit 3 for regulating the characteristics of a rotational movement transmitted by an electric motor, and a rail barrier movement unit 4 containing a gear transmission with a gate 5.

The unit 3 for controlling the characteristics of the rotational movement transmitted by the electric motor consists of a cam clutch and a gearbox.

The unit 4 for moving the railroad barrier contains gate position sensors and a gear train consisting of a pinion shaft and gate 5.

Gate 5 is made in the form of a rack, containing an element for connecting a barrier device with a cover and a working surface with ten working teeth. The working surface of the gate 5 contains one locking tooth 5.1, the working surface of the gate 5.2 in the part of the gate opposite from the locking tooth is made flat.

The utility model works as follows.

When the cover of the crossing barrier device is lifted, the electric motor 2 starts to work after the voltage is applied to it and, through the cam clutch and the reducer of the unit 3 for controlling the characteristics of the rotational movement transmitted by the electric motor, drives the gear transmission of the rail barrier movement unit 4.

The pinion shaft of the gear transmission begins to rotate, opens the locking tooth 5.1 on the working surface of the gate 5, thereby unlocking it, and the working teeth of the gear shaft push the gate 5 along its working teeth. As a result, gate 5 raises the cover of the barrier device to the extreme upper position and goes to the extreme extended position, while gate 5 is not locked, due to the design of the working surface of gate 5.2 in the part of the gate opposite from the locking tooth is flat.

The lowering of the cover of the crossing barrier device can be carried out both automatically by moving the gate 5 by means of reverse rotation of the pinion shaft, and forcibly by acting on the cover of the vehicle crossing barrier, which turned out to be in the crossing area before the cover was lifted. When a vehicle collides with the cover of the crossing barrier, gate 5 is affected, as a result of which the working surface of gate 5.2, in the part of the gate opposite to the locking tooth, is made flat, slips along the locking tooth of the pinion shaft and gate 5 under the influence of the load moves to the extreme retracted position without damaging the drive mechanism of the level crossing device, and the cover of the level crossing device is lowered and moves to the lowest position, which allows the vehicle to safely leave the crossing area.

Thus, the technical result is achieved, which consists in reducing the risk of failure of the electric drive of the crossing barrier device, thereby increasing the reliability of the electric drive of the crossing barrier device.

Claims (3)

1. An electric drive of a crossing barrier device, comprising a housing inside which an electric motor is installed, a unit for controlling the characteristics of a rotational movement transmitted by an electric motor, a unit for moving a railway barrier connected to a unit for controlling the characteristics of a rotational movement transmitted by an electric motor, and containing a gear train formed by a pinion shaft and a gate, while the gate has a working surface on which the working teeth and a locking tooth are located, characterized in that the working surface of the gate in the part of the gate opposite from the locking tooth is made flat. 2. The electric drive of the level crossing device according to claim 1, characterized in that it contains a gate position sensor. 3. The electric drive of the crossing barrier according to claim 1, characterized in that it contains a low-speed AC motor.

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