JP4248082B2 - Track work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a track work vehicle in which a work device is provided on a vehicle body of a track traveling vehicle that travels on a train track, and the work device travels on the train track and performs work by the work device.
[0002]
[Prior art]
As such a track work vehicle, for example, there is a track work height work vehicle in which an aerial work device is provided on the body of the track travel vehicle. An aerial work device is configured, for example, by arranging a boom that can freely rotate, undulate, extend, and the like on a vehicle body, and a work table on which an operator rides is attached to the tip of the boom. The work table can be moved to a desired height. This track traveling work vehicle travels on the track and moves to the work site, moves the work board on which the worker boarded to the desired height, and performs operations such as maintenance and inspection of the trolley wire by the worker Is done.
[0003]
By the way, electricity that is normally supplied to the train flows through the trolley wire, and there is a problem that if the trolley wire is maintained and inspected while being energized in this way, the operator may get an electric shock. . For this reason, generally, work is performed after power supply to the trolley line in the work section is stopped before work.
[0004]
However, even if the power supply is stopped, there is residual voltage on the trolley line, power is accidentally supplied to the trolley line during work, or power is supplied to the trolley line beyond the work section where the power supply is stopped. When a work vehicle enters a section where the vehicle is being operated, there is a risk of electric shock of an operator who is on the work table. For this reason, a contact member having conductivity that can come into contact with and contact with the trolley wire is provided on the body of the track work vehicle, and a grounding circuit is provided by connecting the contact member and the track traveling wheel. Yes. Thereby, the residual voltage of the trolley wire can be released to the track side (ground side) via the ground circuit. In addition, if power is supplied to the trolley wire during work or if it enters a section where power is supplied, the trolley wire is short-circuited to the track side via the ground circuit, so the breaker at the substation Can be operated to stop the power supply to the trolley wire.
[0005]
By the way, the train track has a pair of left and right rails for running the train and a power supply trolley wire that extends above the rails, and usually one rail is connected to the trolley wire. It is used as a power ground (ground), and the other rail is used as a signal ground. Since the train wheels electrically connect the left and right rails when the train travels on such a train track, the train signal is detected to detect the position of the train, and ATS control or the like is performed. On the other hand, a track work vehicle travels separately from a normal train, and is configured to insulate between left and right wheel members in order to prevent malfunction such as ATS control.
[0006]
[Problems to be solved by the invention]
However, in the track work vehicle, when the configuration in which the residual electricity of the trolley wire is released to the track side (ground side) through the ground circuit that connects the contact member and the track traveling wheel as described above, the ground circuit is used. If it is connected to the left and right wheel members and escapes to the track side via the left and right rails, there is a problem that the left and right wheel members may be short-circuited via the ground circuit to cause a signal malfunction. In addition, when electricity is released from the trolley wire via the ground circuit, this electricity acts on the signal line, causing malfunctions of signals in the track, railroad crossings, and damage to signal equipment. There is a problem of fear.
[0007]
For this purpose, it is conceivable to configure the ground circuit to be connected to either the left or right wheel member. However, in this case, when a plurality of track work vehicles perform work in the same track, one track work vehicle is connected to the ground circuit through the left wheel member, and another track work vehicle is connected to the right track. It can happen that the grounding circuit is connected via the wheel member. At this time, the left wheel member of the one track work vehicle is connected to the trolley wire via the ground circuit, and the right wheel member of the other track work vehicle is connected to the trolley wire via the ground circuit. The left and right rails are electrically connected, and the same problem as described above occurs.
[0008]
The present invention has been made in view of such problems, and when performing work on a track by a track work vehicle, only the trolley wire and the rail on one side can be reliably electrically connected and grounded, and To provide a track work vehicle having a configuration that allows all track work vehicles to ground the trolley wire through the same rail when a plurality of track work vehicles perform work in the same track. With the goal.
[0009]
[Means for Solving the Problems]
In order to achieve such an object, a track work vehicle according to the present invention has a track traveling wheel mounted on a pair of left and right rails and rotated and moved, and a vehicle body supported by the track traveling wheel. Place the wheel for track running on the rail and rotate it While in contact with the rail A track contact vehicle configured to travel on a rail, having a work device on the vehicle body, and further having a conductive contact disposed on the vehicle body and capable of abutting contact with a trolley wire A member, a contact member, and a wheel for traveling on a track. Electrically And a ground circuit arranged in a connected manner. The wheel for track running includes a left wheel member made of a conductive material that rolls on the left rail and a right wheel member made of a conductive material that rolls on the right rail, and the left wheel member and the right wheel member They are electrically insulated. On the other hand, the ground circuit electrically connects the contact member and the left wheel member. Connect the trolley wire to the rail on which the left wheel member is mounted. Left ground circuit, contact member and right wheel member Connect the trolley wire to the rail on which the right wheel member is mounted. And a ground switching means for selecting electrical connection by either the left ground circuit or the right ground circuit.
[0010]
In the case of a track work vehicle having such a configuration, since the left or right ground circuit is selected by the ground switching means, when residual electricity from the trolley wire flows to the rail side, it flows to only one of the left and right rails. Therefore, there is no possibility of causing a malfunction of a signal in the track, a railroad crossing, or damaging the signal equipment. Also, when working on the same track with multiple track work vehicles, decide which side of the ground circuit to select in advance and make all work vehicles select the same side of the ground circuit. In this case, work with a plurality of track work vehicles can be performed without any problem.
[0011]
In addition, it is preferable to provide a ground selection display means for displaying which one of the left ground circuit and the right ground circuit is selected for electrical connection, so that either side of the ground circuit is selected with reference to the ground selection display means. Can be easily confirmed.
[0012]
Further, there are a ground selection setting means for presetting which of the left ground circuit and the right ground circuit should be selected, a ground circuit selected by the ground switching means, and a ground circuit set by the ground selection setting means. It is preferable to provide alarm means for issuing an alarm when there is a difference. When working on the same track with multiple track work vehicles, determine which side of the ground circuit to select in advance and set the ground circuit thus determined by the ground selection setting means. When the ground circuit on the side different from the set side is selected, an alarm is issued by the alarm means. For this reason, it is possible to reliably select the ground circuit on the same side for all the work vehicles, and work with a plurality of track work vehicles can be performed without any problem.
[0013]
Furthermore, a left continuity check device that checks the continuity state of the left ground circuit and a right continuity check device that checks the continuity state of the right ground circuit are provided, and electrical connection by either the left ground circuit or the right ground circuit is selected. It is preferable to check the continuity state of the selected ground circuit using a left or right continuity check device. In this case, the left continuity check device is provided in parallel with the left ground circuit, and a left check circuit that electrically connects the contact member and the left wheel member, and the energization state through the left ground circuit and the left check circuit is checked. The right continuity check device can be composed of a left continuity check device, and the right continuity check device is provided in parallel with the right ground circuit to electrically connect the contact member and the right wheel member, and the right ground circuit and the right check circuit. And a right continuity checker for checking an energization state through the sash.
[0014]
When such a right / left continuity check device is provided, the left or right continuity check device checks the energization state of the selected ground circuit and determines that the selected ground circuit is insufficiently conductive. In some cases, it is preferable to perform an operation restriction or an alarm operation of the work device, thereby improving work safety.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As an example of a track work vehicle according to the present invention, FIG. This track-and-lift work vehicle 1 is configured based on a truck traveling on a road, and is provided on a vehicle body 3 having tire front wheels 4 and rear wheels 5 for traveling on the road, and on a front portion of the vehicle body 3. An operation cabin 2 is provided. The rear wheel 5 is a drive wheel. Outrigger jacks 6 are provided on the front, rear, left, and right sides of the vehicle body 3, and a center jack 7 is provided on the lower surface of the center for lifting the vehicle body so that the vehicle body can be placed on the track.
[0016]
An aerial work apparatus 10 is disposed on the vehicle body 3. The aerial work device 10 includes a swivel base 11 provided at the rear of the vehicle body 3 so as to be turnable. The swivel base 11 is swiveled by a swivel motor 12 disposed therein. The base 11 of the telescopic boom 14 is pivotally connected to the swivel base 11 so that it can freely move up and down. The telescopic boom 14 is configured to be telescopic and telescopically movable, and is telescopically moved by a built-in telescopic cylinder 15. A support member 16 is pivotally connected to the distal end of the telescopic boom 14 in a vertical plane including the boom shaft, and a work platform 17 for operator boarding is provided above the support member 16. Yes. The support member 16 is always held vertically by a leveling mechanism (not shown) regardless of the ups and downs of the telescopic boom 14, and the work table 17 is always held horizontally.
[0017]
The work table 17 is provided with an operation device 18 for controlling the operation of the hoisting cylinder 13, the telescopic cylinder 15, the turning motor 12, and the like. The operator operates the operation device 18 to turn the turn table 11. Thus, the work table 17 can be moved to a desired height by causing the telescopic boom 14 to move up and down and telescopically. The operation device 18 is also provided with an operation lever, a switch, and the like for operating drive control of an iron wheel, which will be described later.
[0018]
A front track traveling device 30 and a rear track traveling device 35 are disposed behind the outrigger jacks 6 on the lower surface side of the vehicle body 3, respectively. Both track running devices 30 and 35 have the same configuration except for the mounting direction. Front and rear iron wheels (orbit running wheels) 31 and 36, and an iron wheel holding frame 32 that rotatably supports these iron wheels 31 and 36, respectively. , 37, support frames 33, 38 that support the iron ring holding members 32, 37 so as to be swingable up and down (ie, can be extended and retracted), and the iron ring holding members 32, 37 are rocked up and down to tension the iron rings. It has iron ring elevating cylinders 34 and 39 for performing the take-out and storage operations. The support frames 33 and 38 are fixed to the vehicle body 3.
[0019]
When the steel wheel holding members 32 and 37 are moved up by the steel wheel lifting cylinders 34 and 39 and the steel wheels 31 and 36 are retracted as shown by the two-dot chain line in FIG. Driving is possible. On the other hand, the work vehicle 1 is positioned on the track R, and the steel wheel holding members 32 and 37 are moved downward by the steel wheel lifting cylinders 34 and 39, so that the steel wheels 31 and 36 are tracked (rails) as shown by solid lines in FIG. ) When overhanging R, the tire wheels 4 and 5 are separated from the track R, and the vehicle body 3 is supported by the iron wheels 31 and 36. The work vehicle 1 is provided with a drive hydraulic motor (not shown) for driving the iron wheels 31 and 36, and the iron wheels 31 and 36 are driven to rotate on the track R by the drive hydraulic motor. be able to.
[0020]
The work vehicle 1 is provided with a grounding device in order to release (ground) the electricity of the trolley wire to the track side during work on the track. The grounding device includes a grounding pantograph 50 disposed on the work table 17, and the grounding pantograph 50 is moved up and down by the ground plate support device 51 fixed to the work table 17 and the ground plate support device 51. It is configured from a conductively-supported slot plate (contact member) 52 that is supported. The slot plate 52 can be moved up and down by a slot plate lifting cylinder (not shown) in the slot plate support device 51.
[0021]
The entire configuration of the grounding device is shown in FIG. 2, and the configuration of the grounding device will be described based on this drawing. The ground plate 52 is in contact with and in contact with the trolley wire K during operation, and the first ground wire 61 is connected to the ground plate 52. On the other hand, the second and third ground wires 62 and 63 are connected to the left and right wheel members 36L and 36R constituting the rear iron wheel 36 through rotating brushes, respectively. The left and right wheel members 36L and 36R roll on the left and right rails RL and RR, respectively, but the left and right wheel members 36L and 36R are electrically insulated by an insulating portion 36a. Therefore, the second and third ground wires 62 and 63 are electrically connected to the left and right rails RL and RR via the left and right wheel members 36L and 36R, respectively.
[0022]
A ground change switch 65 for selectively connecting the first ground line 61 and the second and third ground lines 62 and 63 is provided. The ground change switch 65 is operated by operating the ground change lever 68. The ground changeover lever 68 is also connected to the display changeover switch 73, and the display changeover switch 73 is simultaneously operated by the operation of the lever 68. The switch 73 includes a first display line 72 connected to the battery 71, a second display line 74 connected to the left front and rear display lamps 75F and 75R, and a third display line 77 connected to the right front and rear display lamps 78F and 78R. Is connected. Therefore, the first display line 72 and the second and third display lines 74 and 77 can be selectively connected by the operation of the display changeover switch 73.
[0023]
For example, if the ground selector switch 65 and the display selector switch 73 are moved to the left by the ground selector lever 68, the first ground line 61 and the second ground line 62 are connected, and the first display line 72 and the second display line are connected. 74 is connected. As a result, the trolley wire K is electrically connected to the left wheel member 36L and connected to the ground (earth connection) via the left rail RL. At the same time, electricity from the battery 71 flows to the left and right front and rear display lamps 75F and 75R to light them. The display lamps 75F and 75R are provided on the left side of the front and rear of the vehicle, and can be viewed from the front and the rear of the work vehicle 1. For this reason, if there is a work vehicle different from the work vehicle 1 on the track, it is possible to easily identify which wheel member is used for ground connection in the work vehicle 1 from another work vehicle.
[0024]
When the ground selector switch 65 and the display selector switch 73 are moved to the right by the ground selector lever 68, the operation is reversed to the left and right, but this is obvious and will not be described. Further, as can be seen from the above description, the first and second grounding wires 61 and 62 and the grounding switch 65 constitute a left grounding circuit that connects the slot plate 52 and the left wheel member 36L. The grounding wires 61 and 63 and the grounding switch 65 constitute a right grounding circuit that connects the slot plate 52 and the right wheel member 36R.
[0025]
The fourth and fifth display lines 76 and 79 branch from the second and third display lines 74 and 77 and are connected to the controller 80. The controller 80 further includes a ground selection setting switch 81 for setting which one of the left ground circuit and the right ground circuit should be selected, the operating device 18 disposed on the workbench 17, and the conduction of the left ground circuit. A left continuity check device 90 for checking the state and a right continuity check device 95 for checking the continuity state of the right ground circuit are connected. The controller 80 receives signals from the fourth and fifth display lines 76 and 79, the ground selection setting switch 81, the operation device 18, the left continuity check device 90, and the right continuity check device 95 thus connected, A travel control for controlling the travel of the work vehicle 1 by controlling the rotational drive of the steel wheels 31 and 36, and the boom operation control device 86 for controlling the operation of the telescopic boom 14. A control signal is output to the device 87.
[0026]
The configurations of the left continuity check device 90 and the right continuity check device 95 will be described with reference to FIG. Both the check devices 90 and 95 are connected to first left and right check lines 91 and 96 that branch from the first ground line 61 and have conduction switches 93 and 98, respectively, and the left and right wheel members 36L and 36R. And the second left and right check lines 92 and 97 connected to the rotary brush. A circuit formed by the first left check line 91, the left continuity check device 90, and the second left check line 92 is referred to as a left check circuit. Similarly, the right check circuit is formed by the first right check line 96, the right continuity check device 95, and the second right check line 97.
[0027]
The conduction switches 93 and 98 are actuated by the above-described ground switching lever 68. Therefore, for example, as shown in FIG. 4, when the ground switching lever 68 is operated and the first ground line 61 and the second ground line 62 are connected by the ground switching switch 65, at the same time, the left conduction switch 93 connects the first and second left check lines 91, 92. As a result, the left ground circuit and the left check circuit are connected to form a closed circuit having the left continuity check device 90. The left continuity check device 90 energizes the closed circuit to inspect the flow of current in the closed circuit, and outputs an inspection result signal to the controller 80. Thereby, when there is a conduction failure in the left ground circuit, for example, when there is a connection failure of the rotary brush connection between the second ground wire 62 and the left wheel member 36L, this is detected. The same applies to the right side, and the continuity state of the closed circuit formed on the right side is inspected by the right continuity check device 90.
[0028]
The operation in the case of performing a high-altitude work on a track with the above-described track-and-rail high-altitude work vehicle 1 will be described below. First, the road 14 is driven by driving the tire wheels 4 and 5 with the boom 14 stored on the vehicle body 3 as shown in FIG. 1 and the iron wheels 31 and 36 stored as shown by two-dot chain lines. And move to the railroad crossing. At the crossing, the vehicle body 3 is lifted and rotated by the center jack 7 so that the iron wheels 31 and 36 are positioned on the rail R. Thereafter, the steel wheels 31 and 36 are extended, the center jack 7 is contracted, and the steel wheels 31 and 36 are placed on the rail R as shown in FIG.
[0029]
Then, an operating device (not shown) in the operation cabin 2 is operated, the iron wheels 31 and 36 are rotationally driven by the drive hydraulic motor, travel on the rail R, and move to the work site. At this time, the boom 14 is in the retracted state, and the slot plate 52 is also lowered so that the aerial work vehicle 1 can run at a high speed by rotating the driving hydraulic motor at a high speed. Travel control can also be performed by the operating device 18 of the workbench 17; however, for safety reasons, depending on the operating device 18, it is only possible to rotate the driving hydraulic motor at a low speed to perform a low speed travel. ing.
[0030]
When moving to the work site, the operator gets on the workbench 17 and operates the operation device 18 to turn, undulate and extend the boom 14, and the workbench 17 is moved to a desired height as shown in FIG. Further, the slot plate 52 is raised by the slot plate lifting cylinder. As shown in FIG. 2, the operation control is performed by the controller 80 receiving the operation signal from the operation device 18 outputting the operation control signal to the boom operation control device 86 and the slide plate lifting / lowering control device 85.
[0031]
Here, signals from the fourth and fifth display lines 76 and 79 are input to the controller 80, and when there is no input signal from them, that is, the ground switch lever 68 is neutral and the left and right ground circuits are grounded. When the switch 65 is not connected, no output is made to the boom operation control device 86 and the slide plate lifting / lowering control device 85 regardless of the operation signal from the operation device 18. As a result, unless the grounding circuit is conducted, the workbench 17 cannot be moved or the slot plate 52 cannot be raised, so that work at a high place cannot be performed, and work safety is ensured. Can do.
[0032]
Therefore, before the work is performed, the operator operates the ground switching lever 68 left or right and operates the ground switching switch 65 either left or right. As a result, the operated display lamps 75F and 75R or 78F and 78R are turned on. As a result, when there is another aerial work vehicle at the same work site, the indicator lamp thus lit is visually recognized from another work vehicle, and the rail on either side of the work vehicle 1 is grounded from the slot plate 52. Can be identified. Thereby, it is possible to prevent the right and left rails from being conducted through the two work vehicles by using the same rail as the ground for another work vehicle.
[0033]
Further, the aerial work vehicle 1 is provided with a grounding selection setting switch 81. For example, when working with a plurality of work vehicles, it is decided which side rail is used as a ground by meeting before starting the work. The determined side is previously set by the ground selection setting switch 81 in all work vehicles. When the operator operates the ground switch lever 68 and operates the ground switch 65 to the left or right as described above, a signal corresponding to this is sent from the fourth and fifth display lines 76 and 79 to the controller 80. Since it is input, the controller 80 compares this input signal with the setting signal from the ground selection setting switch 81.
[0034]
When it is determined by this comparison that the ground changeover switch 65 has been operated on the opposite side to the preset side, an alarm operation is performed by the alarm device 88, the operation of the boom 14 by the boom operation control device 86, and the rising and lowering of the slit plate. The raising operation of the slot plate 52 by the control device 85 is restricted. As a result, it is possible to avoid using the rail opposite to the preset side as the ground, and to perform work using a plurality of work vehicles without any problem.
[0035]
Further, in this apparatus, when a continuity test result signal is input to the controller 80 from the left and right continuity check devices 90 and 95, and the continuity failure of the connected ground circuit is detected by the operation of the ground switching lever 68, The alarm operation by the alarm device 88 is performed, and the operation of the boom 14 by the boom operation control device 86 and the raising operation of the slot plate 52 by the slot plate lifting control device 85 are regulated. Thereby, it is possible to prevent the work from being performed in a state where the grounding circuit does not function sufficiently, and to secure the work.
[0036]
As can be seen from the above, when the ground switching lever 68 is operated to the left or right, the boom operation control device 86 and the slide plate lifting / lowering control device 85 are operated by the operation from the operation device 18 as long as there is no conduction failure of the ground circuit. It becomes possible to make it. Therefore, at the start of work, as shown in FIG. 5, an operation is performed in which the work table 17 is moved to a desired height and the slot plate 52 is brought into contact with the trolley line K. In this state, the trolley line K is connected to one of the left and right rails RL and RR from one of the left and right wheel members 36L and 36R via a grounding device in the aerial work vehicle 1. As a result, even if there is a residual voltage on the trolley wire K, it can be released to the ground via the grounding device, and work at a high place can be performed safely. In addition, when power is accidentally supplied to the trolley line K during work, or when the work vehicle 1 travels on the rail R and enters a section where power is supplied, the trolley line K has a ground circuit. Therefore, the power supply to the trolley wire can be stopped by operating the circuit breaker of the substation, and safety can be ensured even in such a case.
[0037]
Next, a track work vehicle according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. This track-and-rail work vehicle 100 includes a vehicle body 103 having tire front wheels 104 and a rear wheel 105 for traveling on a road, and a driving cabin 102 provided at a front portion of the vehicle body 103. An aerial work device 110 is disposed on the vehicle body 103 so as to be freely rotatable, and a work table 117 is provided at the tip thereof.
[0038]
On the other hand, a ground pantograph device 50 is provided immediately behind the driving cabin 102 in the vehicle body 103. The device 50 includes a support member 151 fixed to the vehicle body 103, a lift member 152 supported by the support member 151 so as to be vertically movable up and down, a link member 153 attached to the upper end of the lift member 152, It is comprised from the board 155 attached to the upper end part of the link member 153. FIG. The slot plate 155 is moved up and down by the up-and-down movement of the up-and-down member 152 and the bending and swinging of the link member 153 so that it can come into contact with the trolley wire K. A first ground line 61 extends from the slot plate 155 along the pantograph device 50, further extends to the rear portion of the vehicle body 103, and has a male connector 161a at the tip.
[0039]
A front track running device 130 and a rear track running device 135 having iron wheels 131 and 136 are disposed on the lower surface side of the vehicle body 103. The rear track running device 135 is shown in detail in FIG. 7 and has left and right rear track running devices 135L and 135R. Both devices 135L and 135R respectively have iron wheel holding frames 137L and 137R that rotatably support the iron wheels 136L and 136R, and a support frame 140L that is fixed to the vehicle body 103 and supports the iron wheel holding frames 137L and 137R in a swingable manner. 140R. The support frames 140L and 140R and the steel wheel holding frames 137L and 137R are connected via support shafts 139L and 139R having insulating sleeves 138L and 138R, and the steel wheels 136L and 136R are insulated from the vehicle body 103. .
[0040]
Female connectors 162a and 163a that can be fitted to the male connector 161a are attached to the left and right of the rear end of the vehicle body 103. The second and third ground wires 162 extend from the left and right female connectors 162 and 163, respectively. 163, and the second and third ground wires 162, 163 are electrically connected to the left and right iron rings 136L, 136R via slip rings 162b, 163b. Therefore, by selectively fitting the male connector 161a with either the left or right female connector 162a, 163a, the first ground wire 161 is connected to the left and right iron rings 136L, 136 via the second and third ground wires 162, 163. Any one of 136R can be selectively connected to ground.
[0041]
In the above description, when traveling on the rail, the front and rear iron wheels are projected on the rail, the vehicle body is lifted and supported in a state where the tire wheels are lifted, and the railroad aerial work vehicle configured to rotationally drive the iron wheels. However, the roadway work vehicle is configured to run on the rail by driving the tire rear wheel to rotate with the rear wheel of the tire in contact with the rail with the front and rear steel wheels overhanging on the rail. The present invention can be applied to. Furthermore, the present invention can be similarly applied to a track work vehicle that has no tire wheels and has only iron wheels and always travels on rails.
[0042]
【The invention's effect】
As described above, the track work vehicle according to the present invention is configured to select the left or right grounding circuit by the ground switching means, so that when residual electricity from the trolley wire flows to the rail side. It flows only to either the left or right rail, and there is no risk of causing a malfunction in the signal or railroad crossing in the track, or damaging the signal equipment. Also, when working on the same track with multiple track work vehicles, decide which side of the ground circuit to select in advance and make all work vehicles select the same side of the ground circuit. Also, work with a plurality of track work vehicles can be performed without any problem.
[0043]
In addition, it is preferable to provide a ground selection display means for displaying which of the left ground circuit and the right ground circuit is selected for electrical connection, so that either side of the ground circuit is selected by looking at the ground selection display means. Therefore, it is easy to set the ground circuit on the same side for all work vehicles when working on the same track by a plurality of track work vehicles.
[0044]
Also provided is a ground selection setting means for presetting which one of the left and right ground circuits should be selected, and an alarm means for performing an alarm when the actually selected ground circuit is different from the preset ground circuit. Is preferred. When performing work in the same track with a plurality of track work vehicles, if you decide which side of the ground circuit to select in advance and set the ground circuit determined in this way by the ground selection setting means, When a grounding circuit on a side different from the set side is selected, an alarm is issued by the alarm means. For this reason, it is possible to reliably select the ground circuit on the same side for all the work vehicles, and work with a plurality of track work vehicles can be performed without any problem.
[0045]
Furthermore, a left continuity check device that checks the continuity state of the left ground circuit and a right continuity check device that checks the continuity state of the right ground circuit are provided, and electrical connection by either the left ground circuit or the right ground circuit is selected. It is preferable to check the continuity state of the selected ground circuit using a left or right continuity check device. When such a right / left continuity check device is provided, the left or right continuity check device checks the energization state of the selected ground circuit and determines that the selected ground circuit is insufficiently conductive. In some cases, it is preferable to perform an operation restriction or an alarm operation of the work device, thereby improving work safety.
[Brief description of the drawings]
FIG. 1 is a front view showing an orbital high altitude work vehicle to which the present invention is applied.
FIG. 2 is a circuit diagram showing a configuration of a grounding device of the above-mentioned track and land work vehicle.
FIG. 3 is a circuit diagram showing a configuration of a continuity check device for the above-mentioned track and land work vehicle.
FIG. 4 is a circuit diagram showing the configuration of a continuity check device for the above-mentioned track and land work vehicle.
FIG. 5 is a front view showing an orbital high altitude work vehicle to which the present invention is applied.
FIG. 6 is a front view showing an orbital aerial work platform according to a second embodiment of the present invention.
FIG. 7 is a view of a vehicle body and an iron wheel portion of an orbital high altitude work vehicle according to a second embodiment of the present invention as viewed from the rear of the vehicle.
[Explanation of symbols]
1 Railroad high-altitude work vehicle
3 body
10 Altitude work equipment
14 boom
17 Working table
18 Operating device
30, 35 track running device
31, 36
50 Ground pantograph
52 Slotboard
65 Ground selector switch
68 Ground switch lever
73 Display selector switch
80 controller
81 Ground selection setting switch
85 Slot plate lift control device
86 Boom operation control device
87 Travel drive control device
90,95 Continuity check device

Claims (6)

A track working vehicle that travels on a train track having a pair of left and right rails and a power supply trolley wire disposed above the rails,
A track traveling wheel mounted on the pair of left and right rails and rotated and moved, and a vehicle body supported by the track traveling wheel. The track traveling wheel is mounted on the rail and rotated. A track traveling vehicle configured to travel on the rail while being in contact with the rail, a work device disposed on a vehicle body of the track travel vehicle, and the vehicle body or the work device. A contact member having conductivity that is disposed in contact with the trolley wire, and a grounding circuit that is disposed by electrically connecting the contact member and the track running wheel;
The track traveling iron wheel includes a left wheel member made of a conductive material that rolls on the left rail and a right wheel member made of a conductive material that rolls on the right rail, and the left wheel member and The right wheel member is electrically insulated,
The ground circuit, the said contact member said and a left ground circuit of the trolley wire by electrically connected Ru is electrically connected to said rail left wheel member is mounted to the left wheel member, and the contact member right and right ground circuit Ru is electrically connected to the trolley wire on the rail the right wheel member is placed and a wheel member by the electrical connection, the electrical connection using one of the left ground circuit and the right ground circuit A track work vehicle comprising a ground switching means for selecting.   The track work vehicle according to claim 1, further comprising a ground selection display means for displaying which one of the left ground circuit and the right ground circuit is selected for electrical connection. A ground selection setting means for setting in advance which of the left ground circuit and the right ground circuit to select an electrical connection;
3. The track according to claim 1, further comprising alarm means for issuing an alarm when the ground circuit selected by the ground switching means is different from the ground circuit set by the ground selection setting means. Work vehicle.   A left continuity check device for checking a continuity state of the left ground circuit, and a right continuity check device for checking a continuity state of the right ground circuit, wherein electrical connection by either the left ground circuit or the right ground circuit is performed The track work vehicle according to any one of claims 1 to 3, wherein when selected, the continuity state of the selected ground circuit is checked by the left or right continuity check device. The left continuity check device is provided in parallel with the left ground circuit and electrically connects the contact member and the left wheel member, and the energized state through the left ground circuit and the left check circuit It consists of a left continuity checker that checks
The right continuity check device is provided in parallel with the right ground circuit, and a right check circuit that electrically connects the contact member and the right wheel member; an energized state via the right ground circuit and the right check circuit The track work vehicle according to claim 4, further comprising a right continuity checker for checking   When the electrification state check of the selected ground circuit is performed by the left or right continuity check device and it is determined that the continuity of the selected ground circuit is insufficient, the operation restriction or alarm operation of the work device is performed. The track work vehicle according to claim 4 or 5, wherein

Images