HRPK20171276B3 - Innovative half-barrier setup for railroad crossing - Google Patents

Abstract

This innovative level crossing half-barrier is a device designed to secure the level crossing over the railway level. It is primarily intended as a half-bumper, and can also serve as a bumper depending on the length of the pole and the width of the pavement. The device consists of a starting mechanism with appropriate control equipment, a housing (4) in which the mechanism is located and a hand with a pole (12) as an executive element of the basic function of the device. The operation of the device is automated, leaving the possibility of direct control of the same in possible extraordinary circumstances. Such an innovative half-barrier setup for railroad crossing is a device intended to safeguard a railroad crossing at the same level. It is primarily intended as a half-barrier, and it can serve also as a barrier depending on the length of the rod and the width of a railroad The device comprises activation mechanism with adequate regulation equipment, a housing (4) for the mechanism and an arm with the rod (12) as an executive element of the basic function of the device. The device operates automatically, with a possibility of being directly controlled in potential extraordinary circumstances.

Description

Technical field to which the invention relates

This invention relates to half-bumpers and bumpers for ensuring a road crossing over a railway line at the same level.

Technical problem

The road crossing over the railway line at the same level is the place where rail and road traffic meet, so from the point of view of traffic safety, it is a point of high risk. For this reason, such places must be properly secured in order to achieve a safe flow of traffic. In practice, the insurance of such railway-road crossings is carried out by passive and active insurance measures. Passive insurance measures are usually traffic signs, but it turned out that this is not enough. As a higher level of security, active road crossing security measures are applied at the same level, especially by installing half-bumpers. Dealing for many years with the problem of securing road crossings over the railway line at the same level with half bumpers, the inventors noticed that the existing solutions do not ensure 100% safety in the case when the half bumper system is electrically powered. Namely, in case of loss of electricity supply, the previous half-bumper systems did not close the railway crossing with 100% reliability. This invention solves the issue of safely lowering the bumper in the event of the electric power failure of the bumper.

State of the art

The inventor is aware of various systems of active insurance of a road crossing over a railway line at the same level. One of the fundamental solutions of the mechanism for the bumpers to secure the level crossing is presented in the US patent US3964704 - Working mechanism for railway crossings. The inventors are not aware that anyone in the world has managed to design and practically create a half-bumper for securing a road crossing over a railway line at the same level as presented in this invention.

Brief content of the essence of the invention

The half-bumper setter of the road crossing is a device intended for securing a road crossing over the railway line at the same level. Its primary purpose is to be used as a half-bumper, but it can also be used as a bumper, depending on the length of the pole and the width of the roadway. The device presented here consists of a starting mechanism with appropriate regulation equipment, a housing in which the mechanism is placed, and an arm with a pole as an executive element of the device's basic function. The operation of the device is automated, leaving the possibility of direct management of the same in possible extraordinary circumstances. The drive of the device is directly dependent on the following signaling and safety systems in railway traffic:

a) system for closing road crossings in the station area

b) automatic system for closing road crossings with remote control

c) automatic system for closing road crossings with control signals

The concept of the installer is fully harmonized with the requirements and regulations set for these and similar devices in railway traffic.

The basic characteristics of the setter's drive are that the lifting of the pole takes place on an electric drive via direct current. of the motor at a relatively low power consumption, with the possibility of regulating the pole lifting time (according to the regulations, it takes place in an interval of 5 to 7 seconds). The lowering of the pole is by gravity without the use of electricity, and it is possible to regulate the time of lowering the pole (according to the regulations, it takes place in an interval of 8 to 12 seconds). In order for the pole to remain in the extreme vertical or horizontal position, this position is ensured by the action of the electromagnetic brake. The pole is made of anti-corrosive material, and is designed to withstand a gust of wind in the amount of 100 kg/m2, as well as its own weight, and is connected with a breakable element for the basic construction of the setter, which protects the drive part of the device from accidental damage, primarily impacts. This invention provides for the possibility of manually raising and lowering the pole in case of interruption of the power supply of the electric drive. Microswitches are installed in the device, whereby the open or closed state of the microswitch contacts depends on the position of the pole. The construction of the device housing is made of metal, made by welding with the possibility of separating the cover after opening the door with a lock, which enables accessibility to the drive mechanism. The housing of the device itself is attached to the concrete foundation of the installer using screws. The setter's arm, to which the pole with the safety segment is attached by means of a screw connection, can be placed on one left or the other right side of the setter, where on the setter's arm there is a place for placing a counterweight depending on the length of the pole. Commonly used pole lengths are 3 1⁄2, 4 1⁄2, 5 1⁄2, 6 1⁄2 or 7 1⁄2 meters.

The poles are painted in accordance with the relevant regulations and are equipped with position lights as well as reflective lights depending on the purpose and length of the pole (bumper or half-bumper). The drive of the setter includes the following elements of the device: a series direct current motor with an electromagnetic brake on one side and a drive gear on the other side of the motor, a reducer of the setter which consists of three pairs of gears, and the seventh gear for manual drive and a shaft with a segment gear, and engaging segments, supported by ball bearings bearings to the housing of the setter. Self-lubricating bearings are used. Furthermore, the setter drive also contains a group of microswitches that is placed on the microswitch support to define the end positions of the setter pole, it also contains a microswitch to cut off the power supply of the setter in the case of manual operation, regulating resistors to regulate the raising and lowering time of the setter pole, safety switches for motor protection, regular clamps for cable connection, and auxiliary elements such as cable clamp supports, manual drive lever with padlock and heating element to prevent freezing. The opening and closing (raising and lowering) of the pole is regulated by the systems for closing road or road crossings, depending on which half-bumper setter of the road crossing is connected to it.

The closing (lowering) of the pole is determined by the fact that by interrupting the current voltage, the electro-magnetic brake is unblocked. Due to the force of gravity, the pole (clamping element) descends to the horizontal position, and the electric motor is actuated via the reducer. motor during the entire descent cycle, causing the motor to operate as a series generator. The current produced in this way slows down the rotation of the motor and the lowering of the pole. In the horizontal position of the pole, the electromagnetic brake is activated again via the appropriate microswitch. The opening (lifting) of the pole is determined by cutting off the power supply to the electromagnetic brake, and by activating the relay that turns on the power supply to the electric motor for raising the pole. In the vertical position at 85° - 90°, the power supply to the electric motor is cut off via the relay, and at the same time the electromagnetic brake that blocks the pole in the vertical position starts to be energized.

Contact segments control microswitches that operate as part of the system of relay groups of road crossings. A total of 6 microswitches are used to determine the position of the pole.

The housing of the setter is such that it can be oriented by ±15°. The length of the pole must be correctly selected with regard to the width of the road for which it is intended, in which case a suitable breakable segment and a properly selected counterweight must be installed. The pole is in a vertical position, it is in equilibrium with the counter-moment of the value depending on the length of the pole: for a pole of length 3.5 m it is 10 kgm, for a pole of length 4.5 m it is 11.4 kgm, for a pole of length 5.5 m it is 14 kgm, for a pole 6.5 m long it is 19 kgm, and for a pole 7.5 m long it is 24 kgm. The passive resistance, which is not included in the above values, is 4 kgm.

The moment of the return moment (after lifting) of the pole without weights is calculated approximately for the bare pole in [ kgm ], or 2x the length of the pole in [ m ].

For the purposes of regulating the speed of lowering and raising the matko, this innovative setter of the half-bumper road crossing contains a regulating resistor for regulating the raising of the pole, which regulates the raising time of the settinger's pole and/or a regulating resistor for regulating the lowering of the pole, which regulates the time of lowering the settinger's pole. The left potentiometer of electrical characteristics 3Ω / 100W is used to regulate the lifting of the pole. The right-hand potentiometer with electrical characteristics 0.5Ω / 50W is used to regulate the lowering of the poles.

In the basic version, this innovative half-bumper setter of the road crossing, which contains the starting mechanism with the appropriate regulation equipment, the setter housing in which the starting mechanism is placed and the arm with the pole as the executive element of the basic function of the device, further contains a series direct current motor with an electromagnetic brake, the setter reducer , the motor start-up relay and seven microswitches, whereby the closing or lowering of the pole is achieved by interrupting the current voltage to unblock the electromagnetic brake, and the pole descends to a horizontal position due to the force of gravity, with the electric motor acting on the electric motor during the entire lowering cycle due to the action of gravity where the electric motor works as a serial generator and the current thus produced slows down the rotation of the electric motor and the lowering of the pole, whereby in the achieved horizontal position of the pole the electromagnetic brake is activated again via the microswitch, while the opening that is, lifting the pole is accomplished by cutting off the power supply to the electromagnetic brake and activating the motor start-up relay, which includes the drive of the electric motor for lifting the pole. Furthermore, when the pole is in a vertical position at 85° - 90°, the power supply to the electric motor is interrupted via the motor start-up relay, at the same time the electromagnetic brake that blocks the pole in the vertical position starts to be energized.

In a further embodiment, this innovative half-bumper setter of the road crossing contains an assembly of an engaging segment connected to microswitches so that the first microswitch establishes contact via the assembly of an engaging segment and that microswitch when the position of the pole is in the range of 75° - 90°, whereby the first microswitch has the function of controlling the upper position, that the second microswitch establishes contact via the circuit of the included segment and that microswitch when the position of the pole is in the range of 10° - 90°, whereby the second microswitch has the function of turning off the road signal bell, that the third microswitch establishes contact via the circuit of the included segment and that microswitch when the position of the pole is in the range of 0° - 85°, whereby the third microswitch in that case has the function of switching on the motor start-up relay, and that at the same time the third microswitch establishes contact via the switch-on segment assembly and that microswitch when the position of the pole is in the range of 85° - 90°, in which case the third microswitch has the on function of the electromagnetic brake, that the fourth microswitch establishes contact via the switch-on segment assembly and that microswitch when the position of the pole is in the range of 0° - 10°, whereby the fourth microswitch has the function of controlling the lower position, that the fifth microswitch establishes contact via the switch-on segment assembly and that microswitch when the position of the pole is in the range of 0° - 85°, whereby the fifth microswitch has the function of turning on the lighting of the pole and that the sixth microswitch establishes contact via the switch-on segment assembly and that microswitch when the position of the pole is in the range of 0° - 3°, at why the sixth microswitch has the function of turning on the electromagnetic brake horizontally.

It is assumed that the area of action of the contact assembly is ± 2.5°, while the vertical position of the pole can vary between 81° - 90°. For manual pole actuation and positioning, this innovative crossing half-bumper setter includes an additional seventh microswitch that breaks circuits when a manual manipulation handle is inserted into the setter.

A possible design of the device is such that the series DC motor with the electromagnetic brake is on one side of the motor while the drive gear is on the other side of the motor. The reducer of the setter contains three pairs of gears, and the seventh gear for manual drive. Furthermore, this innovative half-bumper setter of the road crossing contains a shaft with a segment gear, where the assembly of the engaging segment is supported by means of ball bearings on the case of the setter. In order to protect the motor, a motor protection switch is installed with the function of protecting the motor from overload, while a heating element is installed in order to protect the setter drive from freezing.

Brief description of the drawing

The accompanying drawings, which are included in the description and form part of the description of the invention, illustrate the best mode of carrying out the invention thus far considered and help to explain the basic principle of the invention.

Figure 1. View of the road crossing setter with an indication of the position of the elements

Figure 2. View of a road crossing setter on a concrete foundation

Figure 3. View of the road crossing installer with an indication of the position of the pole in the lowermost and uppermost position

Figure 4. View of the floor plan of the road crossing installer with an indication of the possibility of installing a pole on the left or right side of the installer.

Figure 5. Display of the simplified electrical diagram of the road crossing setter

LIST OF USED CALL SIGNS

1 paver's concrete foundation

2 screws

3 fixing plates

4 setter housing

5 setter doors

6 cover

7 axles

8 setter's hand

9 counterweight

10 cutting insert

11 PVC hose for guide

12 half-bumper poles

13 catadiopters

14 position light

90 setter reducer

98 boards with electrical components

99 assembly of the included segment

100 places for microswitches

101 first microswitch (microswitch)

102 other microswitches (microswitches)

103 third microswitch (microswitch)

104 fourth microswitch (microswitch)

105 fifth microswitch (microswitch)

106 sixth microswitch (microswitch)

107 seventh microswitch (microswitch)

108 position of connectors (cable clamps)

109 cable holder

210 engine

220 electromagnetic brake

230 capacitor

240 pole lighting

250 engine start relay

260 pole breakage control

270 pole lifting regulation,

280 pole lowering regulation

290 Schottkv diode

300 electric heater

310 motor protection switch

320 thermal switch

1', 2', 3', 4', 5', 6', 7', 8', 9', 10', 11', 12', 13', 15', 16', 17', - connectors

2503, 2509 - motor start relay contacts

A detailed description of at least one way of realizing the invention

The construction of the setter housing 4 is made of metal, preferably sheet metal, made by welding with the possibility of separating the cover 6 after opening the setter door 5, which has a lock, which enables access to the drive mechanism. The housing of the installer 4 is attached to the previously prepared concrete foundation of the installer 1 using screws 2 via the fixing plate 3. The arm of the installer 8, to which the pole of the half-bumper 12 with the safety segment is attached with a screw connection, can be placed on one left or the other right side of the installer, while on the setter's arm is provided with a place for placing the counterweight 9 depending on the length of the half-bumper pole 12. The half-bumper pole 12 rotates around the axis 7. The pole lengths that are commonly used are 31⁄2, 41⁄2, 51⁄2, 61⁄2 or 71⁄ 2 meters. The pole of the half-bumper should be painted in accordance with the relevant regulations and equipped with position lights 14 as well as reflective lights (catadiopters) 13 depending on the purpose and length of the pole (bumper or half-bumper). The external incoming cable is connected to the cable clamps I1 to 17', preferably for 6 mm2, and the position of the connectors (cable clamps) 108 is shown in Figure 1. The external cable is fixed in the housing of the setter 4 using the cable clamp 109 Fig. 1 also shows the location for microswitches 100, while Fig. 5 shows the interval in degrees for each individual microswitch (from the first to the seventh) 101,102,103,104,105,106,107 at the end of the microswitch contacts. The electrical components are located on the electrical components panel 98.

A DC voltage of 24 V is constantly present on connectors 11' and 12', so that connector 11' is connected to the (+) pole, and connector 12' to the (-) pole of the power source. When the pole of the half-bumper 12' is in a vertical position, the connector 1' is at a voltage of + 24 V. The current flows from the connector 1' through the third microswitch 103, through the electromagnetic brake 220 and through the seventh microswitch 107 towards the connector 12' which is at potential (-). The electromagnetic brake 220 keeps the half-bumper pole 12 locked in a vertical position.

When the command to lower the pole of the half-bumper 12 comes from the road crossing device (not shown in the picture), the connector 11' remains without voltage, and the voltage + 24 V appears on the connector 15'. The current stops flowing through the electromagnetic brake 220, so it releases the pole half-bumper 12, which under the influence of gravity falls into a horizontal position, causing the motor 210 to rotate (which is then not connected to voltage). Then the motor 210 works as a generator, so the current flows from one pole of the motor 210, through the contact of the motor switch-on relay 250, through contacts 2503 and 2509 and through the resistor for regulating the lowering of the pole 280 to the other pole of the motor. In this way, the lowering of the half-bumper pole 12 is slowed down, and the speed of the lowering of the half-bumper pole 12 can be changed by changing the resistance value of the resistor for regulating the lowering of the pole 280, which regulates the generator braking current.

When the pole of the half-bumper 12 comes to the horizontal position, the sixth microswitch 106 is pressed, so now the current flows from the connector 15', which is at a voltage of + 24 V, through the sixth microswitch 106, through the electromagnetic brake 220 and through the seventh microswitch 107 towards the connector 12', which is at (-) voltage, i.e. at zero potential. Then the electromagnetic brake 220 attracts and holds the half-bumper pole 12 in a horizontal position.

When the command to raise the pole comes from the road crossing device, connector 15' remains without voltage, and + 24V voltage appears on connector I1. The current stops flowing through the electromagnetic brake 220, so it releases the pole of the half-bumper 12. The current flows from the connector I1 (+), through the third microswitch 103, through the coil of the engine start-up relay 250 and through the seventh microswitch 107 towards the connector 12', which is at zero potential.

The engine start-up relay 250 turns on the engine 210, so the second circuit is closed - from the connector 11', which is at a positive potential, through the protective switch 310, through the contacts of the engine start-up relay 250, through the resistor for regulating the lifting of the motor 270 and through the engine 210 towards connectors 12'.

The motor 210 raises the pole of the half-bumper 12 towards the vertical position, and the lifting speed can be changed by changing the resistance value of the resistor for regulating the raising of the pole 280, which regulates the current through the motor.

When the pole of the half-bumper 12 reaches the vertical position, the motor 210 is switched off (by the contacts of the motor start-up relay), the electromagnetic brake 220 is switched on by the third microswitch 103, and again we have the situation described at the beginning.

The first microswitch 101 and the fourth microswitch 104 provide the road crossing device with information about the upper and lower position of the half-bumper pole 12, and the seventh microswitch 107 breaks the circuits when the manual manipulation lever is inserted into the setter. The second microswitch 102 turns off the road signal bells when the half-bumper pole 12 reaches the horizontal position.

In one version of the half-bumper pole 12, a cutting insert 10 can be installed, which is used to check the integrity of the half-bumper pole 12 (breakage control), for example in case of a collision with a vehicle on the half-bumper pole 12. The guide that goes from the housing of the setter 4 in the half-bumper pole 12 is protected with a PVC hose for the conductor 11. The best results are achieved by installing an electric motor (210) which has a nominal voltage of 24 V and a nominal rotation speed of 110 min-1, where the excitation is in series, the excitation resistance is 122.39 m Ohm and the resistance between the lamellae is 240 .00 m Ohm. Regarding the selection of the electromagnetic brake(220), the best results are achieved with the electromagnetic brake(220) which has a nominal voltage of 24 V and a braking torque of 5Nm, with a maximum rotation speed of 6000 min-1, with an air gap of 0.3 to 0.5 mm.

Claims (15)

1. An innovative half-bumper setter of a road crossing that contains a starting mechanism with appropriate regulation equipment, a setter housing (4) in which the starting mechanism is placed and an arm with a pole (12) as an executive element of the basic function of the device, characterized by the fact that it contains a series direct current motor (210) with electromagnetic brake (220), setter reducer (90), motor start-up relay (250) and microswitches (101,102,103,106,105,106,107), whereby the closing or lowering of the pole (12) is achieved by interrupting the current voltage to unblock the electromagnetic brake (220) ), and the pole (12) due to the force of gravity descends towards the horizontal position, and the electric motor (210) acts on the electric motor (210) during the entire lowering cycle, which causes the electric motor (210) to work as a series generator and thus the produced current slows down the rotation of the electric motor (210) and the lowering of the pole (12), whereby in the achieved horizontal position the pole e (12) reactivates the electromagnetic brake (220) via a microswitch, while the opening or lifting of the pole (12) is achieved by cutting off the power supply of the electromagnetic brake (220) and activating the motor start-up relay (250), which turns on the drive of the electric motor (210) for raising the pole ( 12). 2. Innovative half-bumper setter of the road crossing according to the 1st patent claim, characterized by the fact that when the pole (12) is in a vertical position at 85° - 90°, the power supply to the electric motor (210) via the motor start-up relay (250) is interrupted, while at the same time begins to energize the electromagnetic brake (220) which blocks the pole (12) in a vertical position. 3. Innovative road crossing half-bumper setter according to any previous patent claim, characterized in that it further comprises an assembly of an engaging segment (99) connected to microswitches (101,102,103,106,105,106,107) so that the first microswitch (101) establishes contact via an assembly of an engaging segment (99) and microswitch when the position of the pole (12) is in the range of 75° - 90°, whereby the first microswitch (101) has the function of controlling the upper position, that the second microswitch (102) establishes contact via the switch-on segment assembly (99) and that microswitch when position of the pole (12) in the range of 10° - 90°, whereby the second microswitch (102) has the function of turning off the road signal bell, that the third microswitch (103) establishes contact via the circuit of the included segment (99) and that microswitch when the position of the pole is (12) in the range of 0° - 85°, whereby the third microswitch (103) in that case has the function of turning on the motor start-up relay (250), and that at the same time the third microswitch (103) establishes contact via of the switch-on segment assembly (99) and that microswitch when the position of the pole (12) is in the range of 85° - 90°, in which case the third microswitch (103) has the function of turning on the electromagnetic brake (220), that the fourth microswitch (104) establishes contact via the assembly of the included segment (99) and that microswitch when the position of the pole (12) is in the range of 0° - 10°, whereby the fourth microswitch (104) has the function of controlling the lower position, that the fifth microswitch (105) establishes contact via of the switch-on segment assembly (99) and that microswitch when the position of the pole (12) is in the range of 0° - 85°, whereby the fifth microswitch (105) has the function of turning on the lighting of the pole and that the sixth microswitch (106) establishes contact via the switch-on segment assembly (99) and those microswitches when the position of the pole (12) is in the range of 0° - 3°, whereby the sixth microswitch (106) has the function of turning on the electromagnetic brake horizontally. 4. Innovative road crossing semi-bumper setter according to the third patent claim, characterized by the fact that it contains an additional seventh microswitch (107) that interrupts the electric circuits when a handle for manual manipulation is inserted into the setter. 5. An innovative road crossing half-bumper setter according to any preceding patent claim, characterized in that the series direct current motor (210) with the electromagnetic brake (220) is on one side of the motor while the drive gear is on the other side of the motor. 6. Innovative half-bumper setter of the road crossing according to any previous patent claim, characterized by the fact that the reducer of the setter (90) contains three pairs of gears, and the seventh gear for manual drive. 7. Innovative road crossing half-bumper setter according to any previous patent claim, characterized by the fact that it contains a shaft with a segment gear, whereby the assembly of the engaging segment (99) is supported by means of ball bearings on the setter housing. 8. Innovative half-bumper setter of the road crossing according to any previous patent claim, characterized in that it contains a regulating resistor for regulating the raising of the pole (270) which regulates the raising time of the pole of the setter (12). 9. The innovative half-bumper setter of the road crossing according to the 8th patent claim, indicated by the fact that the regulating resistor for regulating the raising of the pole (270) is a left potentiometer of electrical characteristics 3 Ω / 100 W. 10. Innovative road crossing half-bumper setter according to any previous patent claim, characterized in that it contains a regulating resistor for regulating the lowering of the pole (280) which regulates the time of lowering of the pole of the setter (12). 11. Innovative half-bumper setter of the road crossing according to the 10th patent claim, characterized in that the regulating resistor for regulating the lowering of the pole (280) is a right-hand potentiometer with electrical characteristics of 0.5 Ω / 50 W. 12. Innovative road crossing half-bumper setter according to any previous patent claim, characterized in that it contains a motor protection switch (310) with a motor overload protection function. 13. Innovative road crossing half-bumper setter according to any previous patent claim, characterized in that it contains a heating element (300) to prevent freezing of the setter drive. 14. Innovative road crossing semi-bumper setter according to any previous patent claim, characterized in that the electric motor (210) has a nominal voltage of 24 V and a nominal rotation speed of 110 min-1, with the excitation being in series, the excitation resistance being 122.39 m Ohm and the resistance between the lamellae is 240.00 m Ohm. 15. Innovative road crossing half-bumper setter according to any previous patent claim, characterized in that the electromagnetic brake (220) has a nominal voltage of 24 V and a braking torque of 5 Nm, with a maximum rotation speed of 6000 min-1, where the air gap is 0 .3 to 0.5 mm.