JPS5827725B2 - Pantograph damage detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a damage detection device for a pantograph that is mounted on the roof of an electric railway vehicle and collects current from an overhead contact line.

If the punk graph is damaged while the electric railway vehicle is running,
Not only will it become impossible to collect electricity, but if the driver ignores the damage to the pantograph and continues to drive by collecting electricity from other normal pantographs, it will damage the overhead contact line over a long section, causing damage to the pantograph. Depending on the extent of the damage, the overhead tram line could be severed, leading to a major accident in which middle-class 1-car service was halted for an extended period of time along the entire line.

When investigating the causes of such damage to punk graphs in the past, it was found that minor damage or deformation of the frame or collector boat, or loosening of the support fittings of the overhead contact line led to major damage. There are many examples.

Therefore, if damage to the punk graph can be detected at an early stage before major damage occurs, and appropriate measures can be taken, major accidents such as the one described above can be prevented.
There will be no major impact on vehicle operation.

In recent years, with this intention in mind, as a means of detecting damage to pantographs at an early stage, conductors have been strung along the collector boats and frames of pantographs. In the event of deformation, a system is being developed in which damage can be detected inside the driver's cab by electromagnetically detecting the resulting disconnection of the conductor.

Specifically, this method consists of a series of thin insulated wires or foil-like insulated conductors running along the collector boats and frames of the pankgraph, and a single roof facing the base of the pankgraph. An induction coil is provided, and both ends of the insulated wire or insulated conductor are connected to the terminals of the induction coil to form a closed (T!1 path), and a capacitor is further ground between the terminals of the induction coil, A transmitting coil and a receiving coil are installed side by side on the roof of the car body, facing this induction coil.

In this device, when the transmitting coil is excited at the same time as the pantograph rises, a voltage is induced in the induction coil, and a current flows through the insulated wire or insulated conductor.
Such conditions are sensed by the receiver coil.

If the collector boat or frame is damaged or deformed after the punk graph rises, some of the insulated wires or insulated conductors that are stretched along the collector boat or frame will be damaged. As the wire breaks, the current flowing through these insulated wires and insulated conductors is cut off, and at the same time, an LC resonant circuit consisting of a capacitor and an induction coil is formed.
The circuit constants on the pantograph side will change.

By sensing changes in this circuit constant with the receiving coil, damage to the pantograph can be detected at an early stage.

However, in such known devices, the induction coil placed on the pantograph side, which is subject to high voltage, and the transmitting/receiving coil placed side by side on the car body side, which has the same potential as the ground, are exactly the same as the ATS (automatic train stopping system). ) corresponds to the ground coil and the onboard -F~, which makes the device complicated and large-scale, and not only is maintenance difficult, but also because the transmission and reception between these coils is done by electromagnetic coupling, the pantograph may be disconnected from the wire. Noise disturbances occur due to this, and if there are metal objects around these coils, the electromagnetic coupling between the coils will be affected. They must be made from non-metallic materials such as fiber-reinforced plastics.

Therefore, in order to install such a damage detection device to all vehicles, it is inevitable that the modification will require a considerable amount of cost.

The present invention has been made in view of these points.
A series of air pipes that are easy to break due to external stress are laid along the collector boat and frame of the pantograph, and these air pipes are branched and connected to the original air piping for raising the pantograph. We have developed a simple device that can detect damage to the puncture graph at an early stage by installing a flow rate detector and detecting the breakage of the air pipe due to damage or deformation of the collector boat or frame assembly in terms of flow rate. In particular, it is held in the folded state by mechanical restraints and is raised by spring force by unlocking the mechanical restraints with pressurized air, and in particular the pressurized air from a separate piping system. This is applied to the so-called 4) ascending type puncture graph, which descends at

Hereinafter, the present invention will be explained in detail with reference to the drawings.

Fig. 1 is a skeletal diagram of a spring-raised puncture graph in which a series of air pipes for damage detection are installed along the collector boat and frame silk according to the present invention. It is a piping and wiring system diagram showing an example.

First of all, to explain each element in the figures, in Figure 1 of these figures, 1 and 2 are respectively connected to a single member (not shown) whose one end is fixed to the platform frame via the main shafts 3 and 4. The lower frames 5- and 6, which are rotatably mounted, have one end connected to the other ends of the lower frames 1 and 2 by shafts 7 and 8, respectively. And 6 others! A collector boat is attached to the other end of the seven frames 5 and 6 via shafts 10 and 11 (4 and 9) which rotatably connect the panes to each other.

12 is an overhead contact line on which the FK electric boats 10 and 11 come into sliding contact; 13 is a main spring stretched between lifting rotation levers 14 and 15 fixed to the main shafts 3 and 4, respectively; 1
6 (a restraint lock rotatably attached to a fixing member (not shown) of the stand frame by a 4-pin 17; 18 is a fixing member whose one end is locked to the restraint lock 16 and the other end is mated) A spring connected to 19, 20 an air cylinder for unlocking the restraint key 16, 21 an air pipe for supplying pressurized air to the restraint key unlocking air cylinder 20,
22 is a lowering rotating l/bar fixed to the main shaft 3, 23 is a lowering J4. l Air cylinder, 247t Air piping for supplying pressurized air to this descending air cylinder 23, 25
26 is a branched air pipe connected to the air pipe 21 for supplying pressurized air to the air cylinder 20 for unlocking the restraint key, and 26 shown by a dotted line has one end connected to this air pipe 25, and also connects the lower frame 2 and the upper frame. A flexible air pipe made of vinyl or the like is stretched along 5.
7 has one end connected to the other end of this air pipe 26 (
An air pipe 28 made of less flexible glass or hard plastic is attached along the collector boat 10 of this knob, and a slightly flexible air tube 28 is attached along the other collector boat 11. 29 is an air tube made of flexible rubber or vinyl, etc., which connects one end of the air tube 28 and the other end of the air tube 27. 30 is a similarly flexible tube whose one end is connected to the other end of the air pipe 28, and which is stretched along the L frame 6 and the lower frame 1, and whose opening [ ] at the other end is hermetically sealed. An air tube made of rubber or vinyl.

Next, in the second row in the figure, 31 is an air reservoir, 32 is an air pipe that connects this air reservoir 31 to an air compressor (not shown), 33 is a discharge pipe for pressurized air from the air reservoir 31, 3
Reference numeral 4 denotes an air pipe branched from this discharge pipe 33, and 35 indicates a locking and locking mechanism inserted between the air piping 34 and the air piping 21 for supplying pressurized air to the locking lock unlocking air cylinder 20. A lock electromagnetic valve 36 is an air pipe 3 further branched from the air pipe 25 connected to the air pipe 21.
A distance adjustment type safety valve connected to 7, 38 is air piping 2
1, a flow rate detector 39 connected to the flow rate detector 38 by a wiring 40 and an indicator light mounted on the instrument panel of the driver's cabin, 41 a discharge pipe 33 of the air reservoir 31; 42 is a descending solenoid valve inserted and connected between the air piping 41 and the air piping 24 for supplying gravity air to the descending air cylinder 23;
43 is a positive side power line, 44 is a negative side power line, 45 is a butterfly branched from the positive side power line 43 and connected to the input end of the excitation coil of the lock unlocking solenoid valve 35, and 46 is this wiring. a normally open locking key unlocking operation switch inserted into and connected to 45;
47 is a wiring that connects the output end of the excitation coil of the restraint key unlocking solenoid valve 35 to the negative ttt1 power supply line 44, and 48 is the input end of the excitation coil of the lowering solenoid valve 42 that branches from the positive side power supply line 43. 49 is a normally closed lowering operation switch inserted and connected to this wiring 48; 50 is a wiring connecting the output end of the excitation coil of the lowering solenoid valve 42 to the negative power supply line 44; 51 is a wiring connected to the negative side power supply line 44; The input end of the operating coil 51a is connected to the locking key unlocking [H operation switch 46 and the locking key unlocking solenoid valve 3]
5 and is connected to wiring 45, and the output end is connected to wiring 4
7 and the fixed contacts 51b and 51c are connected to the input end of the actuating coil 51a and the lowering operation switch 49.
These are self-holding electromagnetic relays connected to the wiring 48 between the discharge solenoid valve 42 and the discharge solenoid valve 42.

The present invention is configured as described above, and the pantograph is kept in the folded state by restraining the shaft 9 that connects the upper ends of the upper frames 5 and 6 with the restraining hook 16 by the tensile force of the spring 18. It will be done.

In order to raise the puncture graph from such a state, press the restraint lock unlocking operation switch 46.
6 is closed.

As a result, the positive power line 43, the wiring 45, and the wiring 47
and the locking key unlocking solenoid valve 3 via the negative side power line 44.
5 is energized, this solenoid valve 35 is switched, and the P boat and A port are communicated, so that the pressurized air stored in the air reservoir 31 from the air compressor via the air pipe 32 is transferred to the discharge pipe 33, The air is sent through the air pipe 34, the electromagnetic valve 35, and the air pipe 21 to the air cylinder 20 for unlocking the lock key.

When pressurized air is fed into the air cylinder 20, it operates against the compressive force of the piston 20a and spring 20I), and the piston rod 20c pushes the locking lock 16, so that the locking lock 16 is affected by the tensile force of the spring 18. against pin 17
Since the shaft 9 is rotated clockwise around the locking key 16, the shaft 9 is released from the restraint by the locking key 16, so that the shafts 3 and 4 are rotated clockwise from the main spring 13.
The tensile force causes the levers 14 and 15 to rotate counterclockwise and clockwise, respectively, during the ascent.

As a result, the pantograph rises and the collector boat 1
0 and 11 come into contact with the overhead contact line 12 to collect current.

When the puncture graph rises, since the lowering operation switch 49 is in the closed state, the positive side power supply line 43 and the wiring 4
8. The descending solenoid valve 42 is also energized via the wiring 50 and the negative power supply line 44, but since this solenoid valve 42 is energized and the P boat is blocked, the air reservoir 31
The pressure air is not sent into the lowering air cylinder 23, and therefore
3 does not work.

On the other hand, a part of the pressurized air sent to the air cylinder 20 for unlocking the restraint key passes through the air piping 25 branched to the air piping 21, passes through the lower frame 2, the upper frame 5, the collector boat 10, and the collector boat 11. Upper frame 6 and 1: a series of air pipes 26, 27, 29, 28 and 3 run along frame 1
Flows into 0.

When the puncture graph is rising in this way, a flow of pressurized air occurs in the air piping 21, so the flow rate detector 38 provided in the air piping 21 is activated, and the wiring 40 connects the flow rate detector 38 to the flow rate detector 38. The connected indicator light 39 lights up to notify that the puncture graph is rising.

When the current collector boats 10 and 11 come into contact with the overhead contact line 12 and the rising of the punk graph is completed, the flow of pressurized air in the air 1 pipe 21 is stopped, the indicator light 39 goes out, and the rising of the punk graph is completed. Let me know what you did.

In this way, the indicator light 39 indicates that the punk graph has come into contact with the overhead contact line 12, and its current collector boats 10 and 11 have come into contact with the overhead contact line 12.
If the lock lock release operation switch 46 is stopped at the same time as the light is turned off or detected by a voltmeter installed on the instrument panel in the operator's cabin, the switch 46 returns with a spring force and returns to the open state. become.

In this way, even if the restraint key unlocking operation switch 46 is in the open state again, by pressing this switch 46, the electromagnetic relay 51 whose input end and output end are connected to the wirings 45 and 47, respectively, is activated. The actuating coil 51a is excited, the movable contact piece 51d is attracted, and the fixed contacts 51b and 51c are closed and self-retained, so that the wiring 4
5 is supplied with electric power from the wiring 48 to the lowering solenoid valve 42 through these contacts 51c and 511], and the restraint lock unlocking solenoid valve 35 is kept in an energized state, and the series of air pipes 2
6.27.29° 28 and 30 remain in communication with the air reservoir 31.

Therefore, the pressure of the air flowing into these air pipes 26, 27, 29, 28 and 30 and filling the inside thereof gradually becomes higher;
Since a pressure regulating safety valve 36 is connected to the air pipe 25 to which the air pipes 9.28 and 30 are connected via the air pipe 37, the pressure setting value of the safety valve 36 is controlled by the series of air pipes 26. 27. 29. 28. If the pressure of the air filled inside these air pipes 26, 27, 28 and 30 reaches 2L above the set value, a part of the pressurized air will flow to the safety valve 36.
A series of air pipes 26, 27,
29, 28, and 30 break (4 does not occur).

In other words, when the puncture graph is maintained in a rising state, the inside of the series of air pipes 26, 27, 29, 28, and 30 is always filled with air below the bursting pressure, and the vehicle is in this state. It travels while collecting current from the current collector boats 10 and 11.

In order to lower the puncture graph from such a state, the lowering operation switch 49 is pressed to open this switch 49.

As a result, the excitation of the 1ζ descending solenoid valve 42 is cut off,
This solenoid, tF42, is switched and its P port and A boat are communicated, so that the pressurized air in the air reservoir 31 is transferred to the discharge pipe 33, the air pipe 41, the solenoid valve 42, and the air pipe 24.
The air is then sent to the descending I-+1 air cylinder 23.

When pressurized air is sent into this air cylinder 23, its piston 23a operates against the compressive force of the spring 231), and the lowering rotation lever 22 is pushed by the piston rod 23c, so that this movement l/ The main shaft 3, on which the bar 22 has the same name, rotates clockwise against the tensile force of the main spring 13, and the pantograph, which has been maintained in the upward position, begins to descend.

On the other hand, when the lowering operation switch 49 is opened, the wiring 4
Since the power supply from 8 to the wiring 45 to the restraint key unlocking solenoid valve 35 is also cut off, the excitation of the solenoid valve 35 is cut off, this solenoid valve 35 is switched, and its P port is blocked. As a result, the supply of pressurized air to the restraint key unlocking air cylinder 20 is reduced by t, l-6.

When the supply of pressurized air to this air cylinder 20 is stopped,
The piston 20a returns to its original position due to the compression force of the spring 206, and the air cylinder 20
The air in the air pipe 21 to the air pipes 26, 27,
Are the insides of 29, 28 and 30 full? 11 is exhausted from the exhaust boat of the restraint paddle 1f1 Ijigawa electromagnetic Y35.

When the air inside the air cylinder 20, the air pipe 21, and the series of air pipes 26-Q, 27, 29, 28, and 30 is heated, a flow of air is generated again in the air pipe 21, so that the flow rate detector -38 is activated and the small front light 39 lights up to notify that exhaust is being carried out.

When the piston 20a of the restraint key unlocking air cylinder 20 returns to its original position, the restraint key 16 also returns to its original state due to the tensile force of the spring 18, and by restraining the shaft 9, the puncture graph is folded. is maintained.

When the punk graph is lowered in this way and is in the folded position, which is detected by an electronic f/meter or the like, at the same time, if the lowering operation switch 49 is pushed down by 11 degrees, the switch 49 It returns with a spring force and becomes closed again.

As a result, the descending solenoid valve 42 is energized, the solenoid valve 42 is switched, and the P ports 1 to 1 are closed, so that the supply of pressurized air to the descending air cylinder 23 is stopped.

When the supply of pressurized air to this air cylinder 23 is stopped,
The piston 23a returns to its original position due to the compression force of the spring 23b, and the air cylinder 23 and the air cylinder 23
The air in the air pipe 24 is exhausted from the exhaust port of the lowering solenoid valve 42.

In this way, if the descent of the punk graph is completed, t
l. Movable contact piece 5 of self-held electromagnetic relay 51
1d is released to return the fixed contacts 511) and 51c to the open state.

In the present invention, when the pantograph is kept in the raised state as described above, the pantograph is stretched along the door frame 2, -L = frame 5, the collector boats 10 and 11, the upper frame 6, and the lower frame 1. Series of air tubes 26, 27° 29, 28 and 30
With the inside filled with air from the air reservoir 31,
The vehicle runs by collecting current through the current collecting boats 10 and 11, but these air pipes 26, 27, 29,
28 and 30, in order to withstand long-term use, the air pipes 26, 29 and 30 are made of highly durable and flexible rubber or vinyl, and the air pipe 27 is
and 28 are made of highly durable and less flexible glass or hard plastic.

Furthermore, these air pipes 26°27, 29, 28 and 3
A pressure regulating safety valve 36 is connected to the air piping 25 to which 0 is connected via an air piping 37, and the pressure setting value of this safety valve 36 is used to control the operation of the air cylinder 20 for unlocking the lock key. If the air pressure is kept as low as possible without causing any trouble, the pressure of the air filling the series of air pipes 26, 27° 29, 28, and 30 will be quite low. 29. '2F! and 30 can be made as thin as possible.

That is, in the present invention, when the lower frame 2, upper frame 5, collector boat 10, collector boat 11, seventh frame 6, or lower frame 1 is damaged or deformed, a series of Portions of the air pipes 26, 27, 29, 28 and 30 are broken, and these air pipes 26. 27. 2
The air that was filled inside the 9° 28 and 30 is released into the atmosphere from this broken part.

As a result, an air flow is generated in the air pipe 21 for supplying pressurized air to the air cylinder 2o for unlocking the restraint key, so the flow rate detector 38 is activated and the indicator light 39 is lit, causing a series of Air pipe 26°27.29,28
and 30 breaks, namely the lower frame 2, upper frame 5, collector boat 10, collector boat 11. Notifies damage or deformation of the upper frame 6 or lower frame 1.

In this way, when an abnormality in the puncture graph is detected, the lowering operation switch 49 is immediately pressed.
9 will be opened.

As a result, the pantograph will descend without delay as long as there is no problem with the descending operation.

At the same time, the P boat of the restraint key unlocking solenoid valve 35 is closed, so that the air in the restraint key unlocking air cylinder 20 and the air pipe 21 to this air cylinder 20 is supplied to the solenoid '4'f-35. Exhaust port and series of air pipes 26. 2
7. 29° Exhaust is exhausted from the breaks at 28 and 30.

The present invention thus provides a series of air tubes 26, 27, 29.
The flow rate detector 3 detects the air flow accompanying the breakage of 28 and 30.
8, these air pipes 26, 27, 2
9. The lower frame 2 on which 28 and 30 are stretched,
Upper frame 5, collector boat 10, collector boat 11. Abnormalities in the puncture graph such as damage or deformation of the upper frame 6 or the lower frame 1 are detected, but according to the present invention, not only such an abnormality in the puncture graph but also the lock key release width air cylinder 20 can be detected.
It is also possible to detect air leaks due to damage to the piping system.

Further, according to the present invention, in addition to turning on the indicator light 39 when the puncture graph is abnormal, by adding an appropriate electric circuit (not shown) related to the flow rate detector 38,
It is also possible to simultaneously lower all the puncture graphs in a train formation and even automatically activate the brake system to stop the train.

In addition, in the embodiment of the present invention, the flow rate detector 38
An abnormality in the puncture graph is detected by lighting up an indicator light 39 connected to the indicator light 39. Instead of this indicator light 39, a buzzer is installed in the driver's cab, and this buzzer is connected to the flow rate detector 38. Then, the prevalence of the blowout graph may be detected based on the sound.

Further, in the present invention, an electric circuit is required to detect that the pantograph has risen and its collector boats 10 and 11 have come into contact with the aerial ship ton @ 12, or that the pantograph has descended and entered the folded state. A relay may be provided in the vehicle, and the operation of this relay may cause an indicator light inside the driver's cab to blink.

Furthermore, in the present invention, when glass tubes are used for the air tubes 27 and 28, in order to prevent these air tubes 27 and 28 from being damaged by shocks caused by vibrations of the current collector boats 10 and 11, 11, a rubber seat or the like is inserted between the current collector boats 10 and 11, and the hardness and mounting pitch of the rubber seats are appropriately selected. It should be easy to break when damaged or deformed.

As described above, the present invention provides a series of air pipes that are easy to break due to external stress and extends along the collecting boat and frame of the pantograph, and connects these air pipes to the original air piping for raising the pantograph. A flow rate detector is installed in these air piping systems to detect breakage of the air pipes due to damage or deformation of the collector boat or frame assembly in terms of flow rate.
This makes it possible to detect damage to the puncture graph at an early stage.

According to the present invention, it is possible to prevent major accidents such as the cutting of overhead contact lines, and in addition, a series of conductors are stretched along the collector boats and frames of the pankgraph, and the base of the pankgraph Pantograph damage can be detected at an early stage by installing induction coils and transmitting/receiving coils on the roof of the vehicle, and electromagnetically detecting disconnections in the conductors due to damage or deformation of the collector boat or frame assembly. Compared to the puncture graph damage detection device that has been developed in recent years, the device is not only simpler and easier to maintain, but also prevents noise disturbances caused by puncture graph disconnection. Since there is no interference from intervening metal objects, the frame of the pantograph and the roof part of the vehicle body to which the pantograph is attached can be
There is no need to make it from non-metallic materials such as Punkgraf, and a series of air pipes running along the collector boats and frames of Punkgraph can be branched and connected to the original air piping for raising Punkgraph. Since it is only necessary to install a flow rate detector in the air piping system, a very large effect can be obtained in that modification work can be carried out on all the tanks at a low cost.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible without departing from the spirit of the invention.

[Brief explanation of the drawing]

Fig. 1 is a skeletal diagram of a spring-lifted pantograph in which a series of air pipes for damage detection are stretched along the collector boat and frame according to the present invention, and Fig. 2 is a piping diagram showing an embodiment of the present invention. and a wiring system diagram. 1.2...Lower frame, 3,4...Main shaft, 5,6...
Top, 7. 8. 9... Axis, 10.11... Current collector boat, 13°... Main spring, 14, 15... Rising rotation lever 16... Restraint key, 20... Restraint key unlocking Air cylinder for use, 22... Rotating lever for lowering 23
...lowering air cylinder, 26. 27. 2B,
29. 30... Air pipe, 31... Air reservoir, 3
5... Solenoid valve for unlocking restraint key, 36... Safety valve, 3
8...Flow rate detector, 39...Indicator light, 42...Descent solenoid valve, 46...Restriction key unlocking operation switch,
49... Lowering operation switch, 51... Electromagnetic relay.

Claims (1)

[Claims] In a spring rising type puncture graph, which is kept in a folded state by a mechanical restraint means, and which is raised by a spring force and lowered by pressure air by unlocking this mechanical restraint means with pressurized air, the puncture A series of air tubes that are easily ruptured by external stress and are airtightly sealed at one end are strung along the graph's current collector boat and silk.
The other end of this air pipe is branch-connected to the air pipe for unlocking the mechanical restraint means, and a flow rate detection means is provided in the air pipe for unlocking the mechanical restraint means. When the graph is kept rising, the series of air pipes is constantly filled with pressurized air for unlocking the mechanical restraint means, and the pressure is applied by the valve mechanism to break the series of air pipes. The pressure is maintained below the pressure, and the flow rate detection means detects the flow of air caused by the breakage of this series of air pipes due to damage or deformation of the current collector boat or frame assembly. Punk graph damage detection device.