JP3980789B2 - 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 orbital work vehicle is moved to the work site on the track, and the work board on which the worker is boarded is moved to the desired height at the work site. Work 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]
[Problems to be solved by the invention]
However, since the track work vehicle is configured to travel on the rail, when the track work vehicle is run with the contact member in contact with the trolley wire (especially when running at a high speed), There is a problem that the contact member and the device for raising and lowering the contact member may be damaged, and the trolley wire and its peripheral equipment may be damaged. This is because the contact member provided on the track work vehicle so as to be movable up and down only needs to come into contact with the trolley wire only at the time of work, and thus adopts a simple configuration. In addition, if the pantograph structure that always contacts the trolley line while traveling like a normal train is adopted in the track work vehicle, the above problem can be reduced, but the problem is that the structure becomes large and complicated and the cost is high. is there.
[0006]
Further, when the contact member is configured to be movable up and down, a lift control operation device for performing the lift control is provided on the work table or the like so that the operator operates the lift control operation device to raise and lower the contact member. Configured. In this case, when the contact member is raised and brought into contact with the trolley wire, the residual high voltage of the trolley wire flows to the track side via the ground circuit, but some current leaks from the ground circuit to the vehicle body side. There is a problem in that an operator who goes out and operates the lift control operating device may be electrocuted.
[0007]
The present invention has been made in view of such problems, and the vehicle travels at a high speed while the contact member is in contact with the trolley wire for work on the track by the track work vehicle, the contact member, its lifting device, and the trolley wire. Another object of the present invention is to provide a track work vehicle having a configuration capable of preventing damage to peripheral devices and the like. The present invention further operates the lift control operating device on the vehicle body even if a part of the current leaks to the vehicle body side when the contact member is brought into contact with the trolley wire and the residual voltage of the trolley wire is released to the track side. It is an object of the present invention to provide a track work vehicle having a configuration capable of preventing an operator from being electrocuted.
[0008]
[Means for Solving the Problems]
  In order to achieve such an object, in the present invention, a work device is disposed on a vehicle body of a track traveling vehicle having a track traveling wheel and traveling on a train track rail, and the trolley is mounted on the vehicle body or the work device. A track working vehicle is configured by arranging a contact member having conductivity that can come into contact with and contact with the wire so as to be movable up and down, and a grounding circuit that connects the contact member and the track traveling wheel. Configured to drive the orbital running wheel on the rail by rotating and driving the orbital running wheel,A lift detector for detecting whether or not the contact member is in the raised state, and when the lift detector detects that the contact member is in the raised state, Either the control that prohibits the traveling of the track traveling vehicle on the rail or the control that only allows the traveling vehicle to travel on the rail at a speed lower than the normal traveling speed is performed. A travel speed limiting device is included.
[0009]
  The traveling drive device is configured to travel and drive the orbital traveling wheel at two high and low speeds, and the traveling speed limiting device is in a state where the contact member is raised.When it is detected thatIn this case, the traveling drive device may be configured to be driven only at a low speed. In addition, a driver's cabin is provided at the front of the track traveling vehicle, and a traveling operation device that performs a drive control operation of the traveling drive device is disposed in the cabin and the work device. The traveling operation device in the cabin is a traveling drive. Control operation to drive the device at an arbitrary speed from high speed to low speed is possible, the travel operation device on the work device is capable of control operation to drive the travel drive device only at low speed, and the travel speed limiting device is contact The part is raisedWhen it is detected thatCan be configured to allow only drive control by the traveling operation device on the work device.
[0010]
If the configuration as described above is adopted, in the state where the contact member is raised, the track traveling vehicle is restricted from traveling or is allowed to travel only at low speed, so the contact member is brought into contact with the trolley wire. It is reliably prevented from traveling at a high speed in a state, and even if the contact member and its lifting device have a simple configuration, they will not be damaged, and the trolley wire and its peripheral equipment will not be damaged.
[0011]
It is preferable that a lifting control operating device that performs lifting control of the contact member is provided on the vehicle body or the working device, and at least an operation part of the lifting control operating device is electrically insulated. If such a configuration is adopted, even if a part of the current leaks to the vehicle body side when the contact member is brought into contact with the trolley wire and the residual voltage of the trolley wire is released to the track side, the operation of the lifting control operation device is performed. Thus, the leaked current does not flow through the portion, and it is possible to prevent an operator who is operating the elevation control operating device on the vehicle body from being electrocuted.
[0012]
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 driving wheel, and a driving operation device 19 described later is disposed in the driving cabin 2. 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.
[0013]
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.
[0014]
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.
[0015]
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.
[0016]
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.
[0017]
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 comprises a conductively-supported slot plate (contact member) 52 that is supported, and a rise detector 53 that detects the raised state of the slot plate 52. 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.
[0018]
The entire configuration of the control device including the grounding device is shown in FIG. 2, and the configuration of the control device will be described based on this figure. 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.
[0019]
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.
[0020]
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.
[0021]
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.
[0022]
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. The left continuity check device 90 for checking the state, the right continuity check device 95 for checking the continuity state of the right ground circuit, the traveling operation device 19 disposed in the driving cabin 5, and the rising state of the slot plate 52 are detected. The rising detector 53 is connected.
[0023]
The controller 80 includes 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, the right continuity check device 95, the travel operation device 19, and the rise detection that are connected in this way. In response to the signal from the device 53, the control unit 85 controls the rotary drive of the slot plate lifting / lowering control device 85 for controlling the lifting / lowering movement of the slot plate 52, the boom operation control device 86 for controlling the operation of the telescopic boom 14, and the iron wheels 31 and 36. A control signal is output to a travel control device 87 that controls the travel of the work vehicle 1.
[0024]
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.
[0025]
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.
[0026]
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.
[0027]
Then, the traveling operation device 19 in the operation cabin 2 is operated, and the iron wheels 31 and 36 are driven to rotate by the drive hydraulic motor to travel on the rail R and move to the work site. The driving hydraulic motor can be switched between two speeds, high and low, but at this time, the boom 14 is in the retracted state, the slot plate 52 is also lowered, and the rise plate 53 lowers the slot plate 52. In a state where it is detected that the vehicle is mounted, the driving hydraulic motor is rotated at a high speed so that the aerial work vehicle 1 can run at a high speed. The traveling control can also be performed by the operating device 18 of the work table 17, but depending on the operating device 18, it is only possible to rotate the driving hydraulic motor at a low speed to perform the traveling at a low speed.
[0028]
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.
[0029]
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.
[0030]
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.
[0031]
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.
[0032]
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.
[0033]
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.
[0034]
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.
[0035]
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.
[0036]
Thus, in the state where the ascent detector 53 detects that the board 52 has been raised to contact the trolley line K, the signal from the traveling operation device 19 in the controller 80 operation cabin 2 is not accepted. Only an operation signal from the operation device 18 on the table 17 is accepted. As described above, the aerial work vehicle 1 can be driven at a high speed by an operation from the traveling operation device 19, but a signal from the operation device 19 is not accepted. Only low-speed traveling by an operation from the operation device 18 is possible. As a result, in the state where the ground plate 52 is raised, the aerial work vehicle 1 can only travel at low speed, and it is reliably prevented from traveling at high speed while the ground plate 52 is in contact with the trolley line K. In addition, even if the ground pantograph device 50 including the ground plate 52 has a simple configuration, the trolley wire K and its peripheral equipment are not damaged.
[0037]
FIG. 6 shows in detail the configuration of the operating device 18 disposed on the workbench 17, and this device 18 includes an operating lever including a shaft 18a and an operating knob 18b. At least the shaft 18a and the operation knob 18b are made of an insulating material. Here, when the ground plate 52 is raised and brought into contact with the trolley line K, if there is a residual voltage on the trolley line K, this will flow to the track side via the grounding circuit. Even if the current leaks to the vehicle body side, this current is prevented from flowing through the operation knob 18b. As a result, even if an operator performs an operation by holding the operation knob 18 b of the operation device 18 on the work table 17, the operator can be prevented from receiving an electric shock.
[0038]
Next, a track work vehicle according to a second embodiment of the present invention will be described with reference to FIGS. 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.
[0039]
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.
[0040]
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. .
[0041]
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.
[0042]
In the track and land aerial work vehicle 100 having such a configuration, when the slot plate 155 is lifted from the retracted position by the lifting operation of the lifting member 152 and the bending and swinging of the link member 153 in the expanding direction, the speed of the iron wheel is low. Allow only drive or restrict drive. As a result, the work vehicle 100 is allowed to travel only at a low speed in the state in which the slot plate 155 is raised.
[0043]
In the above description, the aerial work vehicle is allowed to travel only at a low speed when the ground plate is raised, but the aerial work vehicle is restricted from traveling when the ground plate is raised. Also good. In addition, when traveling on a rail, an example is an altitude altitude work vehicle configured to lift and support the vehicle body with the front and rear iron wheels projecting on the rail, and the tire wheels are lifted, and to drive the iron wheels to rotate. The present invention can be applied to an orbital altitude work vehicle configured to run on the rail by bringing the tire rear wheel into contact with the rail with the front and rear iron wheels projecting on the rail and rotating the tire rear wheel. . 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.
[0044]
【The invention's effect】
  As described above, in the track work vehicle according to the present invention, the contact member (slip plate) is raised.When it is detected thatInEither the control that prohibits the traveling of the track vehicle on the rail by the traveling drive device or the control that only allows the traveling vehicle to run the track vehicle on the rail at a speed lower than the normal traveling speed. Control is performedTherefore, it is possible to reliably prevent high-speed traveling while the contact member is in contact with the trolley wire, even if the contact member and its lifting device have a simple configuration, or damage to the trolley wire and its peripheral equipment. I will not let you.
[0045]
In the present invention, a lifting control operating device that performs lifting control of the contact member is provided on the vehicle body or the work device, and at least an operation part of the lifting control operating device is electrically insulated, and the contact member is a trolley wire. Even if a part of the current leaks to the vehicle body when the residual voltage of the trolley wire is released to the track side by making contact with the trolley wire, the leaked current does not flow to the operation part of the lifting control operating device. Further, it is possible to prevent an operator who is operating the lift control operating device on the vehicle body from being electrocuted.
[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 control 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 schematic diagram showing a configuration of an operating device for the above-mentioned track and land work vehicle.
FIG. 7 is a front view showing an orbital aerial work platform according to a second embodiment of the present invention.
FIG. 8 is a view of a vehicle body and an iron wheel part of a roadside 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
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
85 Slot plate lift control device
86 Boom operation control device
87 Travel drive control device

Claims (4)

A track running vehicle having a track running wheel running on a rail for a train track;
A working device disposed on a body of the track vehicle;
A conductive contact member disposed on the vehicle body or on the work device so as to be movable up and down and capable of contacting the trolley wire;
A grounding circuit arranged by connecting the contact member and the track running wheel;
A travel drive device for traveling the track vehicle on the rail;
A rise detector for detecting whether the contact member is in a raised state;
Control for prohibiting travel of the track traveling vehicle on the rail by the travel drive device or the travel drive device when it is detected by the ascent detector that the contact member is in a raised state And a travel speed limiting device that performs any one of the controls that only allow the track traveling vehicle to travel on the rail at a speed lower than the normal travelable speed. Orbital work vehicle. The travel drive device is configured to travel and drive the orbital traveling wheel at two high and low speeds,
The travel speed limiting device is configured to drive the travel drive device only at a low speed when it is detected that the contact member is in the raised state. The track work vehicle according to claim 1. A driver's cabin is provided at a front portion of the track traveling vehicle, and a traveling operation device that performs a drive control operation of the traveling drive device is disposed in the cabin and on the work device, The traveling operation device in the cabin can perform a control operation to drive the traveling drive device at an arbitrary speed from high speed to low speed, and the traveling operation device on the work device controls to drive the traveling drive device only at a low speed. Operation is possible,
The speed limiting device, in case it is in a state where the contact member is raised is detected, the claim 1, characterized in that to allow only the drive control by the travel control device on the work device The track work vehicle described in 1.   2. The lift control operating device that performs lift control of the contact member is provided on the vehicle body or the work device, and at least an operation portion of the lift control operating device is electrically insulated. Orbital work vehicle.

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