JP2010149800A - Track traveling work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a track traveling work vehicle capable of restraining a tension change acting on a trolley wire by performing an accurate speed constant control of the track traveling work vehicle. <P>SOLUTION: This track traveling work vehicle includes a speed sensor 58 for detecting a travel speed of a vehicle body, a drum driving device arranged on the vehicle body, rotatably supporting a drum 25 wound with newly arranging and stringing or the drum 25 for winding the stringing and rotatingly driving the supported drum 25, a drum driving detector 60 for detecting whether or not the drum driving device is in a driving state, and a travel control device 50 for controlling the operation of an iron wheel driving hydraulic motor 8 based on a command value from a central track travel operation device 31 (a track travel operation device 41) when the drum driving device is not in the driving state, detecting the travel speed of the vehicle body detected by a speed sensor 58 when the drum driving deice is in the driving state and controlling the operation of the iron wheel driving hydraulic motor 8 by correcting the travel speed so as to obtain a target speed corresponding to the command value. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a track traveling work vehicle that performs a wire drawing operation or a winding operation of an overhead wire installed above a track while traveling on a track, and more particularly, relates to travel control in the track traveling work vehicle.

  An overhead line (also referred to as a trolley line) installed above the track is worn out or deteriorates due to contact with the pantograph or the like, and therefore, the repositioning is periodically performed. In that case, a drum around which a new trolley wire for re-covering is wound or a drum for winding up the old trolley wire (empty drum) is rotatably supported on a vehicle body that can run on the track. A track running work vehicle equipped with a drum drive device that rotates and rotates the drum while rotating on the track to carry out the work of extending the new trolley wire (feeding work) and the work of winding up the old trolley wire. ing. When performing a trolley wire feeding operation and a winding operation, it is very important how the tension acting on the trolley wire can be maintained within a desired fixed range. For example, the tension acting on the trolley wire. If the wire is small, the trolley wires are prone to be violated. This causes the trolley wires to contact each other or the trolley wires and other members to damage the trolley wires, or to wind the trolley wires around the drum in order during winding. Problems such as inability to do so may occur.

Therefore, the conventional drum driving device is provided with a braking means for applying a braking force to the rotation of the drum, a desired tension to be applied to the trolley wire is set in advance, and a constant torque corresponding to the tension is controlled on the drum by controlling the braking means. Thus, the tension acting on the trolley wire is kept within a predetermined range. In addition, the drum has a winding diameter sensor for detecting the winding diameter of the trolley wire that changes every moment during the work, and not only applies a constant torque to the drum as in the drum driving device, but also detects the trolley detected by the winding diameter sensor. A drum that can maintain a constant tension acting on the trolley wire without being affected by a change in the winding diameter of the trolley wire by controlling the braking means so that a braking force corresponding to the winding diameter of the wire is applied to the drum. A driving device is also known (see, for example, Patent Document 1).
Japanese Patent No. 4067668

  In the track traveling work vehicle having such a drum drive device, the trolley wire is drawn out or wound up while traveling on the track. Therefore, when the traveling speed of the track traveling work vehicle changes, the tension acting on the trolley wire is also increased. There was a problem of changing. In particular, in conventional track-working vehicles, travel control is performed so as to maintain a constant speed by applying a constant driving force to the wheels for track travel, so a speed change occurs when approaching an inclined part on the track. There was a problem that the tension acting on the trolley wire was easy to change.

  The present invention has been made in view of such problems, and changes in tension acting on the trolley wire by performing accurate constant speed control of the track traveling work vehicle when performing a trolley wire feeding operation and a winding operation. An object of the present invention is to provide an orbital work vehicle that can suppress the above-mentioned problem.

  In order to solve the above problems, a track traveling work vehicle according to the present invention (for example, the track-and-rail work vehicle 1 in the embodiment) stretches above the track while traveling on a track (for example, the rail rail R in the embodiment). A work vehicle that performs a wire drawing work or a winding work of an overhead wire, and includes a track traveling device that can travel on the track (for example, the iron wheel 4 and the iron wheel drive hydraulic motor 8 in the embodiment). A vehicle body that can travel on the track by driving the vehicle, and a travel operation device that is operably provided on the vehicle body and outputs a command value that causes the vehicle body to travel at a target speed corresponding to the operation (for example, the center in the embodiment) A track travel operation device 31, a track travel operation device 41), a speed detection means (for example, a speed sensor 58 in the embodiment) for detecting the travel speed of the vehicle body, and a device installed on the vehicle body. A drum driving device that rotatably supports the drum for winding or feeding the overhead wire, and drum driving detection means for detecting whether the drum driving device is in a driving state (for example, the drum in the embodiment) A drive detector 60), and a travel drive control means for performing travel control by drive control of the track travel device based on the command value output from the travel operation device and the detected travel speed detected by the speed detection device. (For example, the travel control device 50 in the embodiment). When the drum drive detection unit detects that the drum drive device is in a non-driven state, the travel drive control unit controls the drive of the track travel device based only on a command value from the travel operation device. When the drum drive detecting means detects that the drum drive device is in the drive state, the travel control is performed based on the command value from the travel operation device. At the same time, the speed detection means detects the travel speed of the vehicle body and feedback-controls the driving of the track travel apparatus so that the detected travel speed becomes a target speed corresponding to the command value.

  In the track traveling work vehicle having the above-described configuration, a plurality of the traveling operation devices are provided in the vehicle body, and any one of the traveling operation devices is provided in the vicinity of the drum operation device that performs operation input of the drum driving device. The another travel operation device is provided apart from the drum operation device, and when the drum drive device is in a driving state, the travel drive control means is provided in the vicinity of the drum operation device. With respect to the command value from any of the travel operation devices, travel control by drive control of the track travel device is performed based on the command value from the travel operation device, and at the same time, the speed detection means travels the vehicle body. Detecting the speed and feedback-controlling the driving of the track traveling device so that the detected traveling speed becomes a target speed corresponding to the command value; For the command value from the other travel operation device provided apart from the drum operation device, the feedback control is performed only by performing the travel control based only on the command value from the travel operation device. You may make it not.

  On the other hand, a coupled track traveling work vehicle according to the present invention includes a first track traveling work vehicle having the above-described configuration and a second track traveling work that can travel on the track and can be coupled to the first track travel work vehicle. And a vehicle (for example, a track-and-terrain work vehicle 100 in the embodiment). The second track traveling work vehicle includes a second track traveling device (for example, the track traveling wheel 104 and the iron wheel drive hydraulic motor 108 in the embodiment) capable of traveling on the track, and the second track. A second vehicle body configured to drive a traveling device and travel on the track; and when the first track traveling work vehicle is connected to the second track traveling work vehicle, The second track traveling device is configured to travel on the track by being driven and controlled by the traveling drive control means provided in the first track traveling work vehicle.

  Note that, in the coupled track traveling work vehicle, a second traveling operation device (for example, an upper portion in the embodiment) that outputs a command value for traveling the vehicle body at a target speed corresponding to the operation to the second track traveling work vehicle. When the first track traveling work vehicle is connected to the second track traveling work vehicle, the second traveling operation device 131 and the lower track traveling operation device 141) are provided. The command value is sent to the travel drive control means, and the travel drive control means controls the drive of the first and second track travel devices, and the second travel operation device For the command value from, the travel drive control means performs travel control by drive control of the first and second track travel devices based only on the command value from the second travel operation device. Just The feedback control may be configured not performed.

  According to the track traveling work vehicle of the present invention, the traveling control device controls the driving of the track traveling device based only on the command value from the traveling operation device when the drum driving device is not in the driving state, and the drum driving device When the vehicle is in a driving state, the vehicle travel speed is detected based on the command value, and the travel speed of the vehicle body detected by the speed detection means is corrected to the target speed corresponding to the command value. Therefore, it is possible to maintain the traveling speed at the target speed with high accuracy at the time of feeding and winding the overhead wire. For this reason, for example, even when the track traveling work vehicle reaches an inclined portion on the track, the traveling speed of the track traveling work vehicle can be maintained constant, and as a result, the track driving work vehicle is drawn out or wound up by the drum driving device. A change in tension acting on the overhead wire can be suppressed.

  In the case where a plurality of travel operation devices are provided on the vehicle body, the travel drive control means responds to a command value from the travel operation device provided in the vicinity of the drum operation device that performs operation input of the drum drive device. When the drum driving device is in a driving state, the driving speed of the track traveling device is feedback-controlled so that the traveling speed is detected and the detected traveling speed is set as a target speed. Regardless of whether the drum driving device is in the driving state, the driving of the track traveling device may be controlled based only on the command value. In a track traveling work vehicle having such a configuration, when performing an overhead wire take-up / winding operation using a drum drive device, the vehicle travel operation is often performed using a travel operation device in the vicinity of the drum operation device. Therefore, it is based on the fact that it is sufficient that the above-described travel control is performed only when operated by the travel operation device, and thus a simple control system configuration can be achieved.

  A coupled track traveling work vehicle according to the present invention includes the first track traveling work vehicle having the above-described configuration and a second track traveling work vehicle that can be coupled to the first track travel work vehicle. The second track traveling device is driven and controlled by the traveling drive control means provided in the first track traveling work vehicle so that the track traveling work vehicle travels on the track. As a result, the traveling drive control means mounted on the first track traveling vehicle enables the traveling control of both track traveling vehicles, so that the configuration of the traveling control device is simplified and the traveling control is also simplified.

  In the coupled track traveling work vehicle, for the command value from the second travel operation device, the travel drive control means performs the first and second operations based only on the command value from the second travel operation device. It is preferable to configure so that only the traveling control by the drive control of the track traveling device is performed and the feedback control is not performed. As described above, in the track traveling work vehicle having such a configuration, when performing the work of feeding and winding the overhead wire using the drum drive device, the travel operation device in the vicinity of the drum operation device is used. Since there are many cases where a traveling operation is performed, the configuration is such that it is sufficient to perform the traveling control only when the traveling operation device is operated. it can.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In this embodiment, a track-and-rail work vehicle that can travel on a road as an example of a track-work vehicle according to the present invention will be described. FIG. 2 shows the configuration of the track-and-rail work vehicle. First, the schematic configuration of the track-and-work vehicle will be described with reference to this drawing.

  The track-and-rail work vehicle 1 is configured on the basis of a truck vehicle having a driving cab 2a provided on a vehicle body 2 and travels on a road by road traveling wheels 3 attached to four locations on the front, rear, left and right of the vehicle body 2. be able to. Further, at four locations on the front, rear, left and right of the vehicle body 2 (the rear side of each tire wheel 3), an orbital wheel 4 (hereinafter referred to as an iron wheel 4) is supported on the vehicle body 2 in a swingable manner. It is rotatably attached to 4a.

  The iron ring support member 4a is oscillated by expansion and contraction of the iron ring overhanging storage cylinder 5, and the iron ring 4 is extended downward or stored upward by oscillating the iron ring support member 4a. It can be done. The track-and-work vehicle 1 places the vehicle body 2 on a track (hereinafter referred to as a railroad rail) with the iron wheel 4 overhanging, and the iron wheel drive hydraulic motors 8 and 8 connected to the two iron wheels 4 on the front side respectively. The iron wheel 4 is driven so that it can run on the rail.

  A turntable 6 is mounted at the center lower part of the vehicle body 2 for moving the railroad work vehicle 1 onto the railroad rail. The turntable 6 can be extended downward or stowed upward by the expansion / contraction operation of the turntable extension storage cylinder 7, and the vehicle body 2 is lifted downward and the vehicle body 2 is lifted up by the operator's human power. 2 can be turned horizontally with respect to the turntable 6. Note that a vehicle body turning motor may be provided in the vehicle body 2, and the vehicle body 2 may be turned horizontally by the vehicle body turning motor instead of the human power of the operator. At the front and rear ends of the vehicle body 2, connecting means 65, 65 described later are disposed.

  On the vehicle body 2, an aerial work device 10, a drum driving device 20, and a central cabin 30 are provided. The aerial work device 10 includes a telescopic lift post 11 vertically installed on the rear side of the driving cab 2a, and a work platform 12 for boarding a worker attached to the top of the lift post 11. The work table 12 can be moved up and down by an expansion / contraction operation of a lifting cylinder (not shown) built in the lifting post 11. The work table 12 is provided with an elevating operation device 13 and a guide roller 14 that is mainly used when winding an overhead wire already stretched by the drum drive device 20. An operator who has boarded the work table 12 can move the work table 12 up and down by operating the lifting operation device 13. The guide roller 14 is rotatably attached to a roller support member 14a that can swing with respect to the work table 12. The guide roller 14 can be swung downward and stored in the work table 12 when not in use. FIG. 2 shows a state in which the guide roller 14 is used while the guide roller 14 is swung upward.

  The drum driving device 20 is a device that rotatably supports a drum 25 around which an overhead wire can be wound, and rotates and drives the overhead wire, and is a vehicle installed upright on the vehicle body 2. A pair of drum support members 21, 21 in the width direction, a drum shaft 22 that extends in the vehicle width direction and is rotatably attached to the drum support members 21, 21, and a drum that rotationally drives the drum shaft 22 The drum 25 includes a drive hydraulic motor 23, and the drum 25 is fixed to an intermediate portion in the longitudinal direction of the drum shaft 22 so as to rotate integrally with the shaft 22.

  The drum drive hydraulic motor 23 is rotationally driven by the hydraulic pressure supplied from the hydraulic pump P via the control valve 26 as shown in FIG. This rotation drive is controlled by the operator by operating the drum operation device 38. The operation signal of the drum operation device 38 is input to the drum control unit 27, and the operation control signal corresponding to the operation of the drum operation device 38 is input from the drum control unit 27 to the control valve 26. The control valve 26 switches the supply direction of the hydraulic oil from the hydraulic pump P to the drum drive hydraulic motor 23, and sets the rotation direction of the drum drive hydraulic motor 23 according to the operation of the drum operation device 38. A relief valve 28 is provided in the oil supply passage to the drum drive hydraulic motor 23 when the overhead wire is fed, and when the oil pressure in the oil passage reaches the set relief pressure, the hydraulic oil is supplied from the relief valve 28. To the tank T, and the hydraulic pressure supplied to the drum drive hydraulic motor 23 is controlled to be equal to or lower than the set relief pressure.

  In the drum drive device 20, while the track-and-rail work vehicle 1 travels forward at a work travel speed, which will be described later, the drum 25 for winding the overhead wire is rotated by the drum drive hydraulic motor 23 in the winding direction (clockwise in FIG. 2A). ) To wind the overhead wire from the front upper side of the vehicle body 2 around the drum 25. At this time, the drum drive hydraulic motor 23 rotates the drum 25 at a rotational speed corresponding to the traveling speed (working traveling speed) of the track work vehicle 1, thereby applying a tension within a predetermined range to the overhead wire wound up. On the other hand, when the overhead wire is fed out, the drum 25 around which the newly installed overhead wire is wound is rotated in the direction opposite to the feeding direction (counterclockwise in FIG. 2A) by the drum drive hydraulic motor 23, and the overhead wire is turned into the drum 25. From the rear of the vehicle body 2 At this time, the drum drive hydraulic motor 23 rotates the drum 25 in the reverse direction at a rotational speed corresponding to the traveling speed (working traveling speed) of the track work vehicle 1 with the torque set by the relief pressure set by the relief valve 28. Thus, a tension within a predetermined range is applied to the overhead wire fed out from the drum 25.

  A traverser (traverse device) 29 is provided above the front side of the drum driving device 20. The traverser 29 is an overhead wire guide device used at the time of winding the overhead wire, and is attached to the traverse shaft 29a extending in the vehicle width direction above the front side of the drum drive device 20 and movably attached to the traverse shaft 29a in the axial direction. The guide table 29b is composed of a guide table 29b and a pair of upper and lower guide rollers (not shown) rotatably provided in the guide table 29b. The guide table 29b is driven by a traverser drive motor (not shown) through an overhead wire between the guide rollers. Is moved along the traverse axis 29a, so that the position where the overhead wire is wound around the drum 25 can be adjusted.

  The central cabin 30 is a box-shaped operation room provided between the high-altitude work device 10 and the drum drive device 20 and on which an operator can ride, and an operator seat (not shown) for the operator to sit inside. ), A central track travel operation device 31 (see FIG. 1) for performing a travel operation on the railroad rail of the track-and-work vehicle 1, and a drum operation device 38 (see FIG. 1) for operating the drum drive device 20. 1) and a central work operation device (not shown) for operating each device disposed on the vehicle body 2 such as the aerial work device 10 is provided. The central cabin 30 is provided so as to be able to turn 180 degrees horizontally on the vehicle body 2 (turnable between arrows FR shown in FIG. 2B), and an operator who has boarded the central cabin 30 By rotating the central cabin 30 with a turning motor (not shown), various operation inputs can be performed with the vehicle body 2 facing forward or backward.

  In the track-and-rail work vehicle 1, when traveling on a railroad rail, the traveling operation can be performed by the central track traveling operation device 31 provided in the central cabin 30, and the track traveling operation provided in the driving cab 2 a. A traveling operation can also be performed by the device 41 (see FIG. 1). At this time, when the operation is started with one of the track traveling operation devices, the other track traveling operation device restricts operation inputs other than operation inputs by emergency stop switches 35 and 45 described later. Note that driving (traveling operation) during traveling on a general road can be performed only by a road traveling operation device (not shown) provided in the driving cab 2a.

  The central track running operation device 31 and the track running operation device 41 are configured in the same manner. As shown in FIG. 1, each track running operation device 31, 41 includes power switches 32, 42, a speed setting volume 33, 43, operation levers 34 and 44, emergency stop switches 35 and 45, and travel mode changeover switches 36 and 46. When the power switches 32 and 42 are operated, the track travel operation devices 31 and 41 are connected to the power source side. It is configured to be electrically connected so that an operator can input an operation.

  The speed setting volumes 33 and 43 are configured to be able to set a maximum speed (for example, 0 km / h to 45 km / h) when traveling by the track traveling operation devices 31 and 41 (when traveling on the railroad rail R). The operation levers 34 and 44 are neutral position automatic return type levers that can be manually tilted forward or backward from the neutral position. When the levers are manually tilted forward or backward, a travel operation signal (command value) is described later. Output to the traveling control device 50. The travel operation signal includes speed information corresponding to the operation amount (tilt amount) of the operation levers 34 and 44 within the speed range (0 km / h to the set speed) set by the speed setting volumes 33 and 43. When it is desired to travel at a higher speed, the operation amount of the operation levers 34 and 44 may be increased. Note that the vehicle can travel at the maximum speed set by the speed setting volumes 33 and 43 when the operation amount of the operation levers 34 and 44 is maximized. Further, when the operation levers 34 and 44 are in the neutral position, a braking force is applied to the iron wheel 4 by a brake device 59 described later.

  The emergency stop switches 35 and 45 are switches for emergency stop of the track-and-work vehicle 1 that is traveling on the railroad rail. When this switch is activated, an emergency stop signal is output to the travel control device 50. The traveling mode changeover switches 36 and 46 are configured to be switchable between a traveling traveling mode and a working traveling mode. When the travel mode changeover switches 36 and 46 are switched to the travel travel mode, a travel operation signal corresponding to the speed set by the speed setting volumes 33 and 43 and the operation levers 34 and 44 is output to the travel control device 50. On the other hand, when the travel mode changeover switches 36 and 46 are switched to the work travel mode and the operation levers 34 and 44 are tilted, regardless of the maximum speed set by the speed setting volumes 33 and 43 and the operation amount of the operation levers 34 and 44. A travel operation signal corresponding to a predetermined work travel speed (for example, 5 km / h) is output to the travel control device 50.

  In the track-and-rail work vehicle 1 having such a configuration, the vehicle body 2 is placed on the railroad rail with the iron wheel 4 projecting downward using the turntable 6, and a hydraulic pump, a control valve, and the like disposed on the vehicle body 2. By performing hydraulic oil supply / discharge control to the iron wheel drive hydraulic motor 8 by the hydraulic control device comprising the above, the iron wheel 4 can be rotated to travel on the railroad rail. Below, the traveling control apparatus 50 which performs traveling control of the track work vehicle 1 when drive | working on a railroad rail is demonstrated.

  As shown in FIG. 1, the travel control device 50 includes a controller 51 that receives travel operation signals (command values) from the track travel operation devices 31 and 41, and a control valve that controls the hydraulic pressure supplied to the iron wheel drive hydraulic motor 8. 55, a speed sensor 58 that detects the speed of the track-and-work vehicle 1 during track travel, and a brake device 59 that applies braking force to the iron wheels 4 are mainly configured.

  The controller 51 includes a travel control unit 52 to which operation signals from the central track travel operation device 31 and the track travel operation device 41 are input, a drum drive determination unit 53 to which a detection signal from the drum drive detector 60 is input, A feedback control permission unit 54 to which a determination signal from the drum drive determination unit 53 is input. The travel control unit 52 controls the control valve 55 based on operation signals from the track travel operation devices 31 and 41, specifically, operation signals from the operation levers 34 and 44 or emergency stop signals from the emergency stop switches 35 and 45. And an operation control signal to the brake device 59. In addition, the speed (speed signal) of the track work vehicle 1 detected by the speed sensor 58 is constantly input to the traveling control unit 52.

  The drum drive determination unit 53 determines whether or not the drum drive device 20 is in a drive state based on the detection signal input from the drum drive detector 60, and outputs the determination signal to the feedback control permission unit 54. . Here, the drum drive detector 60 detects whether or not the drum drive device 20 is in a drive state. For example, when an operator in the central cabin 30 operates the drum drive device 38, drum control is performed. An operation signal detector that detects an operation signal output to the unit 27, or a drum rotation detector that detects whether or not the drum shaft 22 (or the drum 25) is actually rotating in the drum driving device 20 is configured. be able to.

  The feedback control permission unit 54 outputs a feedback control permission signal to the travel control unit 52 when a signal when the drum drive determination unit 53 determines that the drum driving device 20 is in a driving state is input. On the other hand, when a signal when it is determined that the drum driving device 20 is not in the driving state is input, a signal from the feedback control permission unit 54 to the travel control unit 52 is not output. When the feedback control permission signal is input from the feedback control permission unit 54, the traveling control unit 52 converts the traveling speed of the railroad work vehicle 1 to the speed setting volumes 33 and 43 and the speed signal based on the speed signal input from the speed sensor 58. An operation control signal (hereinafter referred to as a feedback control signal) for maintaining the speed set by the operation levers 34 and 44 is output to the control valve 55 and the brake device 59, respectively.

  The control valve 55 is a control valve that controls the supply of hydraulic oil from the hydraulic pump P to the iron wheel drive hydraulic motor 8, and its operation is controlled based on an operation control signal (including a feedback control signal) sent from the travel control unit 52. Thus, the rotational speed of the iron wheel drive hydraulic motor 8 can be adjusted. The hydraulic pump P is driven by an engine (not shown) provided in the vehicle body 2 and supplies hydraulic oil to the iron wheel drive hydraulic motor 8 via the control valve 55.

  The speed sensor 58 detects the rotational speed of the iron wheel 4 every predetermined time (for example, 0.1 second), and detects the traveling speed of the railroad work vehicle 1 from the rotational speed, and the detected traveling speed (speed signal) ) Is always transmitted to the traveling control unit 52 of the controller 51. The brake device 59 is a disc brake device that is provided in the vicinity of each of the four iron wheels 4 and can apply a braking force to each of the iron wheels 4, and an operation control signal (a feedback control signal is also received from the traveling control unit 52). The brake disc (not shown) is pressed against the iron wheel 4 to brake the iron wheel 4.

  Next, the traveling control by the traveling control device 50 having such a configuration will be described together with the procedure of the work of replacing the trolley wire stretched on the railroad rail by the track work vehicle 1.

  First, when traveling on the rail R and moving to the work destination, the operator usually operates the track travel operation device 41 in the driving cab 2a, and is faster than the speed at the time of work described later in the travel mode. The track-and-rail work vehicle 1 is caused to travel at (for example, about 20 to 30 km / h). At this time, since the drum driving device 20 is naturally not in the driving state, the feedback control permission signal from the feedback control permission section 54 to the travel control section 52 is not output. That is, the traveling control unit 52 outputs a constant operation control signal based on the speed set by the speed setting volume 43 and the operation lever 44 of the track traveling operation device 41 to the control valve 55 and the brake device 59, respectively. That is, at this time, the traveling control device 50 does not perform feedback traveling control. Therefore, for example, when the track-and-rail work vehicle 1 reaches an inclined part on the rail R, the traveling speed changes with the inclination. As described above, it is also possible to move to the work destination by operating the central track traveling operation device 31 in the central cabin 30.

  By the way, the trolley wire redrawing work is often performed in cooperation with a plurality of track traveling work vehicles. For example, the trolley wire is provided with the drum driving device 20 as in the track-working work vehicle 1 and the trolley wire feeding / winding work is performed. A work vehicle capable of moving up and down, and a work vehicle equipped with a work table that can be moved up and down in cooperation with a work vehicle that allows a worker on the work table to replace the trolley wire to the hanger near the suspension line. Done. In addition, when moving to a work destination or during each work, the work vehicles may be moved or worked while being connected to each other.

  When arriving at the work destination, the operator gets on the central cabin 30 and operates the central track running operation device 31 (or the operator in the driving cab 2a runs the track running operation device 41) in the work running mode. As shown in FIG. 4, the drum operation device 38 is operated while running 1 at a predetermined work running speed (for example, 5 km / h), and the drum 25 around which the new trolley wire T2 for re-covering is wound is supported. The new trolley line T2 is sequentially fed from the drum driving device 20, and the new trolley line T2 is extended in the vicinity (downward) of the old trolley line T1 through the S-shaped hook 73 hooked to the already stretched old trolley line T1. Line up. As shown in FIG. 4, the extension work of the new trolley line T <b> 2 is often performed in a state in which the roadway work vehicle 100 is connected to the rear of the roadway work vehicle 1. The connection of the work vehicles and the traveling control at that time will be described later.

  When the extension work of the new trolley wire T2 is finished, the operator gets on the central cabin 30 and the work table 12, respectively, and the operator in the central cabin 30 makes the central track running operation device 31 (or the operator in the driving cab 2a). The track running operation device 41) is operated to cause the track work vehicle 1 to run intermittently (or run at a low speed), and the old trolley wire in the hanger 72 attached to the suspension wire 71 at predetermined intervals by the worker in the work table 12 Replacement from T1 to the new trolley line T2. At this time, since the drum drive device 20 is not driven, the travel control device 50 does not perform feedback travel control. The old trolley wire T1 removed from the hanger 72 is supported by the new trolley wire T2 replaced with the hanger 72 via the S-shaped hook 73 (see FIG. 3). The suspension wire 71 is a cable that is stretched on the rail R to support the trolley wire, and the hanger 72 is a member that suspends and supports the trolley wire on the suspension wire 71.

  When the work of replacing the trolley wire to the hanger 72 is completed, the operator in the central cabin 30 operates the central track traveling operation device 31 (or the track traveling operation device 41) to set the track work vehicle 1 in the work traveling mode. As shown in FIG. 3, the drum driving device 20 that supports the empty drum 25 for winding the old trolley wire T1 by operating the drum operation device 38 while traveling at a work traveling speed (for example, 5 km / h). Thus, the old trolley wire T1 is wound up sequentially. In addition, the S-shaped hook 73 hung on the new trolley line T2 is collected by the worker in the work table 12, and the trolley line replacement work is completed. At this time, the old trolley wire T <b> 1 is hung on the guide roller 14 attached to the work table 12 and wound around the drum 25 through the traverser 29. Further, in the drum driving device 20, the drum 25 is rotated by the drum driving hydraulic motor 23 at a constant speed in accordance with the working travel speed of the railroad work vehicle 1, and the tension acting on the old trolley wire T1 wound up by this is predetermined. I try to keep it within range.

  At this time, in the travel control device 50, the drum drive detector 60 and the drum drive determination unit 53 output a signal indicating that the drum drive device 20 is in a drive state to the feedback control permission unit 54. Then, a feedback control permission signal is output from the feedback control permission unit 54 to the travel control unit 52. In the travel control unit 52, based on the speed signal input from the speed sensor 58, a predetermined work travel speed (for example, 5 km / h) set by the central track travel operation device 31 (or the track travel operation device 41) is set. The feedback control signal for maintaining is output to the control valve 55 and the brake device 59, respectively. This feedback control signal is a signal that constantly varies according to the traveling speed detected by the speed sensor 58, unlike the above-described constant operation control signal.

  When the drum drive device 20 is in the drive state in this way, feedback travel control is performed in the travel control device 50. Therefore, for example, even when the railroad work vehicle 1 reaches the inclined portion on the rail R, the railroad work vehicle 1 The traveling speed of the vehicle can be kept constant. As a result, while traveling on the track, the tension acting on the trolley wire taken up by the drum drive device 20 can be accurately maintained within a predetermined range, and the trolley wire is loosened or pulled excessively, and accompanying this. Breakage of the trolley wire can be prevented. Further, when the drum driving device 20 is not driven, for example, during high speed traveling when moving to a work destination, feedback traveling control is not performed, so unexpected feedback traveling such as sudden braking or sudden starting during high speed traveling is performed. Control does not occur. As described above, since the feedback traveling control is performed at the time of the trolley wire extending / winding work requiring the feedback traveling control and not performed at the other traveling, an efficient operation can be realized. In addition, since it is not necessary to provide a start switch for feedback travel control, there is no problem that the operator forgets to operate the start switch, and feedback travel control can be reliably performed when necessary.

  In the above description, the traveling control device 50 performs feedback traveling control when the drum driving device 20 is in a driving state with respect to the traveling operation signal (command value) from any of the track traveling operating devices 31 and 41. Although the configuration is shown, instead of the traveling control signal from the central track traveling operating device 31 provided in the central cabin 30 together with the drum operating device 38, the traveling control device 50 is driven by the drum driving device 20. In this state, feedback traveling control is performed, and the traveling operation signal from the track traveling operation device 41 in the driving cab 2a is based only on the traveling operation signal regardless of whether the drum driving device 20 is in the driving state or not. The traveling control device 50 may be configured to perform traveling control. This is because in a track running work vehicle such as the track-and-rail work vehicle 1, when the trolley wire is drawn out and wound using the drum drive device 20, the central track running operation device 31 in the vicinity of the drum operation device 38 is used. This is based on the fact that it is sufficient to perform the above-mentioned feedback travel control only during the operation with the central track travel operation device 31 because the travel operation of the vehicle is often performed. A system configuration can be adopted.

  As described above, when moving to a work destination or during each work, the vehicle may be moved or work while being connected to each other. For example, the extension work of the new trolley line T <b> 2 is performed in a state in which the roadway work vehicle 100 is connected to the rear of the roadway work vehicle 1 as shown in FIG. 4. The track-and-terrain work vehicle 100 is based on a truck vehicle having a driving cab 102a provided on the vehicle body 102, as with the track-and-terrain work vehicle 1, and includes road traveling wheels 103 and track traveling wheels 104 (hereinafter referred to as iron wheels 104). Is a track-and-rail work vehicle provided at four locations on the front, rear, left and right of the vehicle body 2. At the front and rear ends of the vehicle body 102, connecting means 165 and 165 described later are disposed.

  On the vehicle body 102, an aerial work device 110 and an overhead wire guide device 120 are provided. The aerial work device 110 is provided in a pair in the vehicle width direction on the vehicle body 102 via the body frame 107, and a scissor link mechanism 111 that crosses two link bars and rotatably connects the intersections; The work platform 112 is mounted on the front end of the scissor link mechanism 111 and can be moved up and down by a telescopic operation of a lift cylinder (not shown) provided in the scissor link mechanism 111. It is like that.

  The work table 112 is provided with a work operation device 113, an upper track traveling operation device 131, and a guide roller 115 used during the work of replacing the overhead wire. An operator who has boarded the work table 112 can move the work table 112 up and down by operating the work operation device 113, and can operate the upper rail running operation device 131 to operate the railroad rail of the railroad aerial work platform 100. A traveling operation on R can be performed. The upper track running operation device 131 includes a power switch 132, a speed setting volume 133, an operation lever 134, an emergency stop switch 135, and a running mode changeover switch 136 in the same manner as the central track running operation device 31 described above. (See FIG. 5).

  The overhead wire guide device 120 penetrates a part of the work table 112 and is vertically extended on the vehicle body 102 so as to be telescopically extendable and retractable, and an overhead wire guide attached to the tip of the elevation post 121. The guide pulley 122 is configured to move up and down by an expansion / contraction operation of a lift cylinder (not shown) built in the lift post 121. It should be noted that the vertical movement of the guide pulley 122 in the overhead wire guide device 120 can be operated from the work operation device 113 in the work table 112.

  As shown in FIG. 5, when the traveling operation signal (command value) is applied to the vehicle body 2 when the traveling operation is performed by the upper track traveling operation device 131 (the operation lever 134 or the emergency stop switch 135). It is output to the travel control device 150 provided. The travel control device 150 supplies hydraulic oil to the iron wheel drive hydraulic motor 108 that rotates the iron wheel 104 by the control valve 155 based on the operation control signal output from the travel control unit 152 to which the travel operation signal is input. By performing the exhaust control and controlling the braking force applied to the iron wheel 104 by the brake device 159, the iron wheel 104 can be driven to rotate and travel on the rail R. In addition, the traveling operation on the railroad rail R of the railroad aerial work platform 100 can also be performed by the lower track traveling operation device 141 provided in the driving cab 102a. The lower track running operation device 141 has a power switch 142, a speed setting volume 143, an operation lever 144, an emergency stop switch 145, and a running mode changeover switch 146, similarly to the above-described central track running operation device 31. Configured.

  The track-and-rail work vehicle 1 and the track-and-terrain work vehicle 100 are connected using a connecting rod 170. The connecting rod 170 is made of a metal rod-like member that does not easily bend or expand and contract. The connecting rod 170 is installed on the connecting means 65 provided in the track-and-rail work vehicle 1 and the connecting means 165 provided in the track-and-rail work vehicle 100. Fixed. A communication cable (not shown) for enabling mutual communication between vehicles is provided inside the connecting rod 170. When the two working vehicles 1 and 100 are connected using the connecting rod 170, The travel control device 50 of the railroad work vehicle 1 and the travel control device 150 of the trackland aerial work platform 100 can communicate with each other via the communication cable. Therefore, when traveling on the rail R with both the work vehicles 1 and 100 connected, the central track traveling operation device 31 and the track traveling operation device 41 in the track-and-rail work vehicle 1, and the track-and-terrain work vehicle 100 The traveling operation can be performed from either the upper track traveling operation device 131 or the lower track traveling operation device 141. At this time, when the operation is started with one track traveling operation device, operations other than the emergency stop switch are regulated in the other track traveling operation devices.

  For example, when a traveling operation is performed by the central track traveling operation device 31 of the track-and-rail work vehicle 1, the traveling operation signal (command value) is transmitted to the traveling control unit 152 (travel control) of the track-and-rail work vehicle 100 via the traveling control unit 52. Also input to device 150). At this time, the travel control unit 152 operates on the control valve 155 and the brake device 159 in the highway work vehicle 100 based on the travel operation signal from the central track travel operation device 31 input via the travel control unit 52. Output a control signal.

  Alternatively, when a traveling operation is performed by the upper-orbit traveling operation device 131 of the roadway working vehicle 100, the traveling operation signal (command value) is transmitted to the traveling control unit 52 (traveling control) of the railroad working vehicle 1 via the traveling control unit 152. Also input to the device 50). At this time, the travel control unit 52 sends an operation control signal to the control valve 55 and the brake device 59 in the track-and-work vehicle 1 based on the operation signal from the upper track travel operation device 131 input via the travel control unit 152. Output. In this state where both the work vehicles 1 and 100 are connected, when the traveling operation is performed by any of the track traveling operation devices, the control valves 55 and 155 in the both work vehicles 1 and 100 and the The brake devices 59 and 159 are controlled so that both work vehicles 1 and 100 travel on the rail R at the same speed.

  Next, a description will be given of the travel control when the trolley wire is reworked in a state where the track-and-rail work vehicle 1 and the track-and-terrain work vehicle 100 are connected. When the vehicle travels on the rail R with the two work vehicles 1 and 100 connected to the work destination, the worker moves by operating one of the track travel operation devices 31, 41, 131, 141. It switches to driving | running | working mode and makes both work vehicles 1100 connected at high speed (for example, about 20-30 km / h) faster than the speed at the time of work. At this time, since the drum driving device 20 is naturally not in the driving state, the feedback control permission signal from the feedback control permission section 54 to the travel control sections 52 and 152 is not output. That is, the traveling control units 52 and 152 output a constant operation control signal based on the speed setting volume of the track traveling operation device and the speed set by the operation lever to the control valves 55 and 155 and the brake devices 59 and 159, respectively. To do. That is, at this time, the traveling control devices 50 and 150 do not perform feedback traveling control.

  When performing the trolley wire extension / winding work in a state where both work vehicles 1,100 are connected, for example, in the case of the new trolley wire T2 extension work, as shown in FIG. The vehicle 1 is mounted on the central cabin 30 of the vehicle 1 and the work platform 112 of the orbital aerial work platform 100, and the central track traveling operation device 31 (or the upper track traveling operation device 131) is operated to operate the two work vehicles 1, 100 in the work traveling mode. While the vehicle is traveling at a predetermined work travel speed (for example, 5 km / h), the operator in the central cabin 30 operates the drum operating device 38 to sequentially feed out the new trolley wire T2 from the drum drive device 20, and the new trolley wire T2 Will be extended. The new trolley line T2 extends from the drum driving device 20 to the upper side of the work platform 112 in the rear altitude work vehicle 100 and is hung on the guide roller 115 and the guide pulley 122 of the overhead wire guide device 120. A person extends through the S-shaped hook 73 below the old trolley line T1. In the drum driving device 20, the drum 25 is driven to rotate in the reverse direction with respect to the new trolley line T <b> 2 drawn out according to the work traveling speed of the railroad work vehicle 1 with the torque set by the set relief pressure of the relief valve 28. Thus, the tension acting on the new trolley wire T2 fed out from the drum 25 is kept within a predetermined range.

  At this time, in the travel control device 50, the drum drive detector 60 and the drum drive determination unit 53 output a signal indicating that the drum drive device 20 is in a drive state to the feedback control permission unit 54. Then, a feedback control permission signal is output from the feedback control permission unit 54 to the traveling control unit 52 and the traveling control unit 152 of the traveling control device 150. The travel control units 52 and 152 maintain the work travel speed set by the travel mode changeover switch 36 and the operation lever 34 of the central track travel operation device 31 based on the speed signal input from the speed sensor 58. Feedback control signals are output to the control valves 55 and 155 and the brake devices 59 and 159, respectively.

  When the drum drive device 20 is in the drive state as described above, feedback travel control is performed in the travel control devices 50 and 150. For example, even when both the work vehicles 1 and 100 reach the inclined portion on the rail R. The traveling speed of both work vehicles 1,100 can be kept constant. As a result, the tension acting on the trolley wire fed out in the drum drive device 20 can be accurately maintained within a predetermined range, and the trolley wire is prevented from being loosened or pulled excessively, and the trolley wire being damaged accordingly. be able to. Further, when the drum driving device 20 is not driven, for example, during high speed traveling when moving to a work destination, feedback traveling control is not performed, so unexpected feedback traveling such as sudden braking or sudden starting during high speed traveling is performed. Control does not occur. As described above, since the feedback traveling control is performed at the time of the trolley wire extending / winding work requiring the feedback traveling control and not performed at the other traveling, an efficient operation can be realized. In addition, since it is not necessary to provide a start switch for feedback travel control, there is no problem that the operator forgets to operate the start switch, and feedback travel control can be reliably performed when necessary.

  In the above description, the traveling control devices 50 and 150 are driven by the drum driving device 20 in response to the traveling operation signals (command values) from any of the four orbital traveling operation devices 31, 41, 131, and 141. However, the travel control devices 50 and 150 are provided for the travel operation signals (command values) from the track travel operation devices 41, 131 and 141 other than the central track travel operation device 31. May be configured to perform travel control based only on travel operation signals from the track travel operation devices 41, 131, and 141. As described above, in the coupled track traveling work vehicle connected like the track-and-rail work vehicle 1 and the track-and-terrain work vehicle 100, when the trolley wire is fed and wound using the drum driving device 20, Since the vehicle running operation is often performed using the central start running operation device 31 in the vicinity of the drum operation device 38, the above-described feedback running control is performed only when operated by the central track running operation device 31. In view of the fact that it is sufficient, a simple control system configuration can be obtained.

  The preferred embodiments of the present invention have been described so far, but the scope of the present invention is not limited to those shown in the above-described embodiments. For example, in the above-described embodiment, the drum driving device 20 drives the drum 25 in the opposite direction to the overhead wire drawn out according to the work traveling speed of the railroad work vehicle 1 to apply a tension within a predetermined range to the overhead wire. However, for example, a braking force may be applied to the drum 25 by the braking means, and thereby, a tension within a predetermined range may be applied to the overhead wire that is fed in accordance with the work traveling speed of the railroad work vehicle 1.

It is a block diagram which shows the structure of the traveling control apparatus in the track-and-rail work vehicle which concerns on this invention. It is a figure which shows the structure of the said roadway working vehicle, (a) is a side view of a roadway working vehicle, (b) is a top view of a roadway working vehicle. It is a figure explaining the winding operation | work of the trolley wire by the said track-and-terrain work vehicle. It is a figure explaining the extension work of a trolley line by connecting the above-mentioned track-and-rail work vehicle and a track-and-terrain work vehicle. It is a block diagram which shows the structure of the traveling control apparatus in the connection state with the said track-and-rail work vehicle and a track-and-terrain work vehicle.

Explanation of symbols

R Railway rail (track)
1 Railroad work vehicle (orbital work vehicle)
2 Car body 4 Wheel for track running (track running device)
8 Iron wheel drive hydraulic motor (track running device)
20 Drum drive unit 25 Drum 31 Central orbit travel operation device (travel operation device)
41 Track running operation device (running operation device)
50 Travel control device (travel drive control means)
58 Speed sensor (speed detection means)
60 Drum drive detector (Drum drive detection means)
100 track-and-land work vehicle (second orbital work vehicle)
102 Body (second body)
104 Wheels for track travel (second track travel device)
108 Iron wheel drive hydraulic motor (second track traveling device)
131 Upper track traveling operation device (second traveling operation device)
141 Lower track running operation device (second running operation device)

Claims (4)

In a track traveling work vehicle that performs a wire drawing work or a winding work of an overhead wire that is stretched above the track while traveling on the track,
A vehicle body comprising a track traveling device capable of traveling on a track and driving the track traveling device to travel on the track;
A travel operation device that is operably provided on the vehicle body and that outputs a command value that causes the vehicle body to travel at a target speed corresponding to the operation;
Speed detecting means for detecting the traveling speed of the vehicle body;
A drum driving device provided on the vehicle body and configured to rotatably support a winding or feeding drum for the overhead wire;
Drum driving detection means for detecting whether or not the drum driving device is in a driving state;
Travel drive control means for performing travel control by drive control of the track travel apparatus based on the command value output from the travel operation apparatus and the detected travel speed detected by the speed detection means,
The travel drive control means includes
When it is detected by the drum drive detection means that the drum drive device is in a non-driven state, based on only a command value from the travel operation device, travel control by drive control of the track travel device is performed,
When the drum drive detecting means detects that the drum drive device is in a driving state, the speed detection is performed simultaneously with running control by drive control of the track running device based on a command value from the running operation device. The track traveling work vehicle is characterized in that the travel speed of the vehicle body is detected by means and the drive of the track traveling device is feedback-controlled so that the detected travel speed becomes a target speed corresponding to the command value. A plurality of the travel operation devices are provided on the vehicle body,
Any one of the travel operation devices is provided in the vicinity of a drum operation device that performs operation input of the drum drive device, and the other travel operation device is provided apart from the drum operation device,
When the drum driving device is in a driving state, the travel drive control means is
With respect to a command value from any of the travel operation devices provided in the vicinity of the drum operation device, while performing travel control by drive control of the track travel device based on the command value from the travel operation device And simultaneously detecting the travel speed of the vehicle body by the speed detection means and feedback controlling the drive of the track travel device so that the detected travel speed is a target speed corresponding to the command value,
For the command value from the other travel operation device provided away from the drum operation device, the feedback control is performed only by performing the travel control based only on the command value from the travel operation device. The track traveling work vehicle according to claim 1, wherein there is no track traveling work vehicle. A connecting track comprising the first track traveling work vehicle according to claim 1 and a second track traveling work vehicle capable of traveling on the track and being connectable to the first track traveling work vehicle. A traveling work vehicle,
The second track traveling work vehicle includes a second track traveling device that can travel on the track and has a second vehicle body that can travel on the track by driving the second track traveling device. Configured
When the first track traveling work vehicle is connected to the second track traveling work vehicle, the second track traveling device is provided with the first track traveling work vehicle. A connected track traveling work vehicle characterized in that the vehicle is driven and controlled by a means and travels on a track. A second traveling operation device that outputs a command value for causing the vehicle body to travel at a target speed corresponding to an operation is provided on the second track traveling work vehicle;
When the first track traveling work vehicle is connected to the second track traveling work vehicle, a command value from the second travel operation device is sent to the travel drive control means to perform the travel drive. The control means is configured to perform drive control of the first and second track traveling devices,
With respect to the command value from the second travel operation device, the travel drive control means determines whether the first and second track travel devices are based only on the command value from the second travel operation device. The connected track traveling work vehicle according to claim 3, wherein only the traveling control by the drive control is performed, and the feedback control is not performed.

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