JP2010126309A - Road/track working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a road/track working vehicle enhancing operability and working efficiency by eliminating frequent traveling restriction operation at track traveling. <P>SOLUTION: The track working vehicle 1 includes: a vehicle body capable of traveling on the track R; a working base capable of being lifted/moved; and a traveling restriction device for restricting traveling operation according to a movement position of the working base. The traveling restriction device is constituted so as to have a position detection part for detecting the movement position of the working base, and a control part provided with an allowance movement range 2 of the working base such that it does not interfere with a cable 9 provided on a periphery of the track R in the traveling state and an enlarged allowance movement range 3 set so as to outwardly enlarge the allowance movement range 2. The control part restricts starting when the movement position of the working base detected by the position detection part is positioned at the outside of the allowance movement range 2 in the stopping state and restricts traveling when the working base is positioned at the outside of the enlarged allowance movement range 3 in the traveling state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an orbital work vehicle configured by providing an aerial work device and a crane device on a chassis of a vehicle capable of traveling on a track.

  2. Description of the Related Art Conventionally, there is known an aerial work vehicle configured to move a workbench provided at the tip of an aerial work device to a desired height and to perform work at a height by an operator who has boarded the workbench. . As an example of this aerial work vehicle, there is a track-and-rail work vehicle that has a track traveling wheel and a road traveling wheel, and is configured to be able to perform maintenance and inspection work of an overhead wire by a high working device on the track ( For example, see Patent Document 1). In many cases, the track-and-rail work vehicle configured as disclosed in Patent Document 1 is required to perform maintenance work and the like of the overhead line along the track. In a state where the vehicle is supported on the vehicle, the overhead line maintenance and inspection work is performed by the aerial work device while traveling on the track.

In the above-mentioned track-and-rail work vehicle, when the work table is moved along the track while being moved extremely upward or left and right, the work table is connected to the overhead line, the support column that supports the overhead line, and the railway vehicle on the adjacent track. Etc., and also puts the worker on the work table in danger. Therefore, conventionally, an allowable movement range in which the work table does not come into contact with an overhead wire or the like is set in advance. A travel regulation device was provided.
JP 2000-38292 A

  By the way, in the conventional railroad work vehicle provided with the above-described travel regulation device, for example, when the work table is raised to the vicinity of the overhead line portion in a stopped state, maintenance inspection work is performed, and when moving to the next work place, The vehicle can be started by once moving the work table within the allowable movement range. In an actual work site, in order to efficiently perform maintenance and inspection work, the work table may be moved to the vicinity of the limit position of the allowable movement range and started. If the vehicle is run in this state, the platform will be immediately located outside the allowable movement range when vibrations or rolls, etc. act on the railroad work vehicle and the posture slightly fluctuates. Was working. In this way, each time the travel regulation device is activated, the railroad work vehicle is decelerated and stopped, so that it is difficult for the operator to travel according to the operation, and the operability with respect to the work vehicle is reduced. It takes extra time to move, and there is a possibility that the working efficiency may be lowered.

  In view of the problems as described above, it is an object of the present invention to provide a track-and-rail work vehicle with improved operability and work efficiency by eliminating frequent travel restriction operations during track travel.

  In order to solve the above-described problems, a track-and-rail work vehicle according to the present invention includes a vehicle (for example, the vehicle body 10 in the embodiment) that can travel on a track by a track traveling wheel (for example, the iron wheel 14 in the embodiment), and the vehicle. A working device (for example, the working table 40 in the embodiment) disposed on the chassis so as to be movable up and down at least with respect to the chassis, and travel that restricts the traveling operation of the vehicle according to the movement position of the working device. In an orbital work vehicle having a regulation device (for example, the track travel controller 90 in the embodiment), the travel regulation device detects a movement position of the work device (for example, a vehicle attitude calculation unit in the embodiment). 91) and when the vehicle travels on the track, the track equipment (for example, the overhead line 9 in the embodiment) provided around the track is dried. A control unit (for example, a restriction range determination unit 93 in the embodiment) having an allowable movement range of the working device and an expansion allowable movement range set so as to expand the allowable movement range outward. The control unit is configured such that when the movement position of the work device detected by the position detection unit is outside the allowable movement range when the vehicle is stopped on the track. The start is restricted, and the vehicle is restricted from traveling when the working device is positioned outside the enlargement allowable movement range in the traveling state.

  In the track-and-work vehicle having the above-described configuration, the chassis is provided with an inclination angle detection unit (for example, the vehicle body inclination angle detector 25 in the embodiment) that detects an inclination angle of the chassis with respect to a horizontal plane. The moving range and the enlargement allowable moving range are set to extend vertically upward with respect to the track surface on which the track is provided, and the size of the tilt angle of the chassis detected by the tilt angle detecting unit is set. Accordingly, it is preferable that the vertical upper height is set.

  According to the track-and-rail work vehicle according to the present invention, the travel restriction device that restricts the travel according to the movement position of the work table as an example of the work device includes an allowable movement range and an expansion allowance that is set wider than the allowable movement range. And a control unit having a moving range. Accordingly, the start of the vehicle is restricted when the work table is located outside the allowable movement range in the stopped state, and the vehicle is restricted from traveling when the work table is located outside the enlargement allowable movement range in the traveling state. Is possible. For this reason, for example, if there is a work table in the expansion allowable movement range wider than the allowable movement range during traveling, the traveling is permitted without being restricted, for example, near the limit position of the allowable movement range. When the vehicle is moved and started, the travel regulation device is activated if the track work vehicle slightly fluctuates during traveling and the work bench is positioned outside the allowable movement range but is still within the expansion allowable movement range. Traveling can be continued without any problems. Therefore, it is possible to improve the operability and work efficiency for the work vehicle by preventing the travel restricting device from frequently operating during track travel.

  In the above-mentioned track-and-rail work vehicle, an inclination angle detection unit for detecting the inclination angle of the chassis is provided, and an allowable movement range and an expansion allowable movement range are set according to the inclination angle detected by the inclination angle detection unit. A configuration is preferred. For example, when the upper height of the allowable movement range and the expansion allowable movement range is set so as to be inversely proportional to the detected inclination angle, the allowable amount according to the magnitude of the overturning moment acting on the railroad work vehicle is set. It is possible to set the movement range and the enlargement allowable movement range, and it is possible to reliably prevent the railroad work vehicle from falling while traveling.

  Hereinafter, preferred embodiments of a track-and-rail work vehicle according to the present invention will be described with reference to the drawings. First, with reference to FIG. 1 and FIG. 2, the whole structure of the track-and-rail work vehicle 1 which is an example of the track-and-work vehicle to which this invention is applied is demonstrated. FIG. 1 shows a side view of the track work vehicle 1 and FIG. 2 shows an iron wheel overhanging storage device 60 described later.

  As shown in FIG. 1, the track-and-work vehicle 1 has a driver's seat 11 and a chassis 12 provided at the rear thereof, and a vehicle body 10 capable of traveling on a road by tire wheels 13 and a turn provided on the chassis 12. A base 30; a boom 30 which is attached to a column 21 extending upward from the swivel base 20 by a foot pin 22 and can be raised and lowered by operation of a boom hoisting cylinder 23; and a work table 40 provided at a tip of the boom 30; It is comprised.

  The swivel base 20 can be swiveled horizontally by operation of a boom swivel motor 24 provided in the vehicle body 10, thereby turning the boom 30 360 degrees. The boom 30 includes a plurality of boom members that are nested, and can be expanded and contracted by operation of a built-in boom telescopic cylinder 31. A vertical post 32 that is always kept vertical by the action of a leveling device (not shown) is provided at the tip of the boom 30, and the work table 40 is attached to the top of the vertical post 32. For this reason, the work table 40 always keeps the floor level and can be swung in a horizontal plane by the operation of the built-in work table turning motor 41.

  The work table 40 is provided with an upper operating device 50. By operating the levers provided therein, the boom hoisting cylinder 23, the boom telescopic cylinder 31, the boom turning motor 24, the work table turning motor 41, and Hydraulic operation of hydraulic motors 81L, 81R, etc., which will be described later, can be performed hydraulically so that the boom 30 can be raised, retracted, swiveled, the work table 40 can be swung, and the track work vehicle 1 can be run on the track R as will be described later. It has become. For this reason, the worker who has boarded the work table 40 can perform work by moving the work table 40 to a desired high place work position.

  At four locations on the front and rear, left and right of the vehicle body 10 and behind each tire wheel 13, iron wheels 14 for track traveling are attached via an iron wheel overhanging storage device 60. As shown in FIG. 2, the iron ring overhanging storage device 60 is pivotally coupled to a lower portion of a base 61 that is a vehicle body 10 side member by a rocking pin 71 so as to pivotally support the iron wheel 14. 62 and an upper end portion (end portion on the cylinder body 63a side) are pivoted to the vehicle body 10 side by an upper pin (not shown), and a lower end portion (end portion on the piston rod 63b side) is connected to the cylinder of the bracket 62 by a lower pin 72. An iron ring projecting storage cylinder 63 pivotally connected to the mounting portion 62a is provided. From this configuration, the iron ring 14 can be put into the extended state by extending the iron ring extended storage cylinder 63, and the iron ring 14 can be put into the stored state by reducing the iron ring extended storage cylinder 63. FIG. 1 shows the overhanging state, and FIG. 2 shows the storage state.

  A rear operation device 55 is provided at the rear portion of the vehicle body 10, and an iron wheel extension switch (not shown) for issuing an extension command for each iron wheel 14 and a storage command for each iron wheel 14 are provided in the rear operation device 55. An iron wheel storage switch (not shown) is provided. As shown in FIG. 1, a turntable 17 for moving the vehicle body 10 between the road and the track R is provided below the vehicle body 10 so as to protrude downward. The turntable 17 can be extended downward and stowed upward by an expansion / contraction operation of a turntable extension storage cylinder 18 incorporated in the vehicle body 10. The operation of the turntable extension storage cylinder 18 is performed by the rear operation device 55.

  A procedure for performing an altitude work on the track R, for example, a maintenance and inspection work for an overhead wire, using the track-and-work vehicle 1 configured as described above will be described. In order to perform such high-altitude work, an operator first drives from the driver's seat 11 to travel on the road, and moves the work vehicle 1 to the level crossing closest to the work site. In this way, when moving on the road, the iron wheel 14 is placed in the upper storage position (see FIG. 2) and travels by the tire wheel 13. At this time, the boom 30 is tilted forward in the fully contracted state, and the boom 30 is placed on the boom receiver 19 provided on the chassis 12.

  When arriving at the railroad crossing nearest to the work site, the front and rear tire wheels 13 are stopped so as to cross the railroad crossing, the operation is performed from the rear operation device 55 to operate the turntable overhanging storage cylinder 18, and the turntable 17 is attached to the vehicle body 10. Project downward. When the vehicle body 10 is lifted and supported by the turntable 17, the vehicle body 10 is pushed by hand to turn about 90 degrees, and when the traveling direction of the vehicle body 10 and the direction of the track R coincide with each other, the iron wheel extension switch is operated from the rear operation device 55. Then, the iron ring overhanging storage cylinder 63 is operated. Thus, after each iron wheel 14 is extended to a predetermined overhanging position, the turntable overhanging storage cylinder 18 is operated, and the iron wheel 14 is positioned on the track R while the turntable 17 is stored. As a result, the vehicle body 10 is transferred from the road onto the track R, and can travel along the track R by driving the iron wheels 14.

  As shown in FIG. 3, hydraulic motors 81L and 81R for driving the left and right iron wheels are connected to the front iron wheel 14 (the left iron wheel 14L and the right iron wheel 14R) as shown in FIG. Has been. FIG. 3 shows a hydraulic circuit related to rotational driving and braking of the left and right iron wheels 14L and 14R.

  The hydraulic circuit includes an electric motor 82 driven by an in-vehicle battery (not shown) (instead of the driving power of an in-vehicle engine, for example, a traveling engine that drives the tire wheels 13, a PTO device) A hydraulic pump 83 that is driven by the electric motor 82 and sucks the hydraulic oil in the hydraulic oil tank T, and the hydraulic pump. A control valve 84 to which pressure oil from 83 is supplied, hydraulic motors 81L and 81R to which pressure oil supplied and controlled by this control valve 84 is sent, parking brake calipers 15L and 15R, and brake calipers 16L and 16R are mainly configured. Is done.

  Brake rotors 80L and 80R are integrally connected to the left and right iron wheels 14L and 14R that are rotationally driven by the hydraulic motors 81L and 81R. The brake rotors 80L and 80R are clamped to brake the rotation. Brake calipers 16L and 16R are attached to the bracket 62 (see FIG. 2). In addition, parking brake calipers 15L and 15R that clamp the brake rotors 80L and 80R and brake the rotation thereof are also attached to the bracket 62.

  The brake calipers 16L and 16R are in a braking state when pressure oil is supplied from the control valve 84, and are in a state in which braking is released when pressure oil is not supplied. The parking brake calipers 15L and 15R are disc brakes called negative types, and are in a braking state by a biasing force of a spring (not shown) when pressure oil is not supplied from the control valve 84. By supplying pressure oil from the control valve 84, braking by the urging force is released. Therefore, for example, even when the hydraulic pump 83 breaks down and the supply of pressure oil from the control valve 84 is interrupted, the configuration is such that a braking force can be generated immediately, and work safety is ensured.

  In addition, an operation signal of, for example, a travel lever (not shown) provided in the upper operation device 50 is input to the control valve 84, and pressure oil to the hydraulic motors 81L and 81R based on this operation signal. The supply control is performed.

  The track-and-rail work vehicle 1 configured as described above, for example, travels on the track R, stops at a desired position, operates the boom 30 and moves the work table 40 to a high place, and performs maintenance work on the overhead wire. Do. 4 (a) and 4 (b) show a view of the track-and-work vehicle 1 positioned on the track R from the front. For example, the height of the overhead line 9 provided above the track R in a stopped state. The case where the work table 40 is moved near the position and the work is performed is shown.

  Here, an axial force sensor (not shown) for detecting a moment acting on the boom hoisting cylinder 23 is attached to the boom hoisting cylinder 23 so that the detected moment exceeds a preset allowable moment. The operation of the boom 30 is regulated. In FIG. 4A, an allowable work range 4 indicated by a two-dot chain line is set as a range in which the operation of the boom 30 is not restricted and the work table 40 is movable. 4A shows a case where the track-and-work vehicle 1 is positioned on the horizontal track R, and FIG. 4B shows a case where the track-and-work vehicle 1 is positioned on the track R having an inclination angle α with respect to the horizontal plane. .

  By the way, if the track work vehicle 1 is run along the track R in a state where the work table 40 is moved to the vicinity of the height position of the overhead wire 9, there is a risk that the work table 40 may come into contact with the overhead wire 9. is there. Therefore, the track work vehicle 1 is configured such that the start is restricted when the work table 40 is located outside the predetermined range. Further, the track work vehicle 1 can move the work table 40 by operating the boom 30 even while traveling on the track R. When the work table 40 moves out of a certain range during the travel, Since the work table 40 may come into contact with the overhead wire 9 in the same manner as described above, the travel of the track work vehicle 1 is restricted at this time. Hereinafter, the apparatus configuration and operation related to these regulations will be described.

  The track-and-work vehicle 1 is equipped with a track travel controller 90 including a vehicle posture calculation unit 91, a vehicle travel calculation unit 92, and a restriction range determination unit 93 as shown in FIG. For example, the boom 30 includes a boom undulation angle detector 33 that detects the undulation angle of the boom 30, a boom turning angle detector 34 that detects a turning angle of the boom 30 with respect to the chassis 12, and a boom extension that detects the extension amount of the boom 30. A detector 35 is attached, and the detection result of each detector is output to the vehicle attitude calculation unit 91.

  The vehicle attitude calculation unit 91 obtains the movement position of the work table 40 based on each input detection result. In addition, an operation state of the upper operation device 50 by an operator who has boarded the work table 40 (for example, whether or not the travel lever is operated) is output from the upper operation device 50 to the vehicle travel calculation unit 92 as an operation signal. . The vehicle travel calculation unit 92 is configured to be able to detect whether the track-and-work vehicle 1 is “running” or “stopped” on the track R from the input operation signal.

  For example, the restriction range determination unit 93 has a substantially rectangular shape as shown in FIG. 4A and an allowable movement range 2 that is set so as to surround the railroad work vehicle 1, and extends the allowable movement range 2 to the left and right and upward. And an enlargement allowable movement range 3 set as described above. The allowable movement range 2 and the expansion allowable movement range 3 are set as ranges in which the work table 40 and the overhead wire 9 and the like do not come into contact with each other when the work vehicle 40 travels with the work table 40 positioned within this range. The The details of the allowable movement range 2 and the expansion allowable movement range 3 will be described later.

  A vehicle body inclination angle detector 25 that detects the inclination angle of the vehicle body 10 is attached to the vehicle body 10, and the detection result of the vehicle body inclination angle detector 25 is output to the regulation range determination unit 93 (see FIG. 5). . In addition to the detection result of the vehicle body inclination angle detector 25, the restriction range determination unit 93 includes the movement position of the work table 40 obtained by the vehicle posture calculation unit 91, and “running” in the vehicle travel calculation unit 92 or The detection result of “stopped” is input.

  Subsequently, after the operation of the track controller 90 configured as described above is performed after the track work vehicle 1 is stopped and the work table 40 is moved near the height position of the overhead wire 9 in FIG. An example will be described in which the railroad work vehicle 1 is traveled and moved to the next work position. In this case, the detection result “stopped” is output from the vehicle travel calculation unit 92 to the restriction range determination unit 93, and the movement position of the work table 40 and the allowable movement range 2 input from the vehicle attitude calculation unit 91. Are compared.

  Here, when the work table 40 is moved to the inside of the allowable movement range 2 (for example, the position of the work table 40a shown in FIG. 4A), in the restriction range determination unit 93, the allowable movement range 2 is set. It is determined that the work table 40 is located inside, and an operation signal corresponding to the determination is output from the restriction range determination unit 93 to the control valve 84. Based on this operation signal, pressure oil supply is permitted from the control valve 84 to the hydraulic motors 81L, 81R and the parking brake calipers 15L, 15R, and the track-and-work vehicle 1 can start according to the operation of the travel lever. By operating the track controller 90 in this way, it is possible to prevent the work table 40 from coming into contact with the overhead wire 9 when the track-and-work vehicle 1 is started, and safety can be improved.

  On the other hand, when the work table 40 is outside the allowable movement range 2 (for example, the position of the work table 40b shown in FIG. 4A), the work table 40 is positioned outside the allowable movement range 2 in the restriction range determination unit 93. It is judged that Based on this determination, the control valve 84 is switched to restrict the supply of pressure oil to the hydraulic motors 81L, 81R and the parking brake calipers 15L, 15R, so that the track-and-work vehicle 1 is started according to the operation of the travel lever. In order to start, the boom 30 must be operated to move the work table 40 to the inside of the allowable movement range 2. Thus, when starting, the work table 40 is always located inside the allowable movement range 2, and the work table 40 and the overhead wire 9 are not in contact with each other, and the safety can be ensured. It has become.

  As described above, the track-and-rail work vehicle 1 starts with the work table 40 positioned inside the allowable movement range 2, travels on the track R, and is moved to the next work location. If the work table 40 is located inside the allowable movement range 2 during this traveling, the work table 40 and the overhead wire 9 are not likely to come into contact with each other, so that traveling is permitted. For example, there is a case where the work table 40 slightly fluctuates and is located outside the allowable movement range 2 due to, for example, vibration or roll on 1. The operation of the track running controller 90 at this time will be described below with reference to FIG. In this case, the detection result “traveling” is output from the vehicle travel calculation unit 92 to the restriction range determination unit 93, and the movement position and the enlargement allowable movement range of the work table 40 input from the vehicle posture calculation unit 91. 3 is compared.

  Here, when the work table 40 slightly fluctuates during traveling and moves from the position of the work table 40a to the position of the work table 40b (outside the allowable movement range 2 and inside the enlargement allowable movement range 3), for example, The determination unit 93 determines that the work table 40 is located inside the enlargement allowable movement range 3. Then, an operation signal corresponding to the determination is output from the regulation range determination unit 93 to the control valve 84, and the control valve 84 allows the supply of pressure oil to the hydraulic motors 81L and 81R as it is based on this operation signal. The running state is maintained. As described above, even when the work table 40 is slightly fluctuated due to vibration, roll or the like, and is positioned outside the allowable movement range 2, the travel restriction is not performed and the vehicle is not stopped every time. Can be shortened and the working efficiency can be improved. Moreover, since the track-and-rail work vehicle 1 can run smoothly according to the operator's operation, the operability for the work vehicle can be improved.

  On the other hand, when the work table 40 is moved to the work table 40c outside the enlargement allowable movement range 3 due to a large vibration or the like acting on the railroad work vehicle 1 or operating the boom 30 during traveling, the work table There is a risk that 40 and the overhead wire 9 may come into contact with each other. At this time, the restriction range determination unit 93 determines that the work table 40 is located outside the enlargement allowable movement range 3, and switches the control valve 84 to stop the pressure oil to the hydraulic motors 81L and 81R. Pressure oil is supplied to the brake calipers 16L and 16R. By doing so, the track-and-work vehicle 1 can be immediately decelerated and stopped, so that the work table 40 and the overhead wire 9 can be prevented from coming into contact with each other during traveling, and safety can be improved.

  By the way, in the conventional configuration in which only one allowable movement range is set, in order to increase work efficiency, the work table 40 is often moved to start near the end of the range of the allowable movement range. At this time, the work table 40 slightly fluctuates, so that the work table 40 is immediately located outside the allowable movement range, and the driving regulation is activated each time and the vehicle stops, leading to a decrease in operability.

  On the other hand, in the track-and-rail work vehicle 1 to which the present invention is applied, it is a condition for starting to position the work table 40 inside the allowable movement range 2, and thereby the work table 40 and the overhead wire 9 are in contact with each other. It has a configuration that can ensure safety. Further, during traveling, traveling is permitted if the work table 40 is positioned inside the enlargement allowable movement range 3 wider than the allowable movement range 2, so that the work table is located near the end of the allowable movement range 2. In the case where the vehicle 40 is started and started, even if the work table 40 fluctuates slightly, it can be avoided that the travel regulation is activated each time, and the operability can be improved.

  The restriction range determination unit 93 can set the allowable movement range 2 and the expansion allowable movement range 3 in accordance with the inclination of the track R on which the track-and-rail work vehicle 1 is located. The setting method will be described below. When the track work vehicle 1 is positioned on the inclined track R as shown in FIG. 4B, the inclination angle α is detected by the vehicle body inclination angle detector 25 and output to the restriction range determination unit 93. Then, the restriction range determination unit 93 sets the allowable movement range 5 and the enlargement allowable movement range 6 so as to extend vertically upward from the inclined surface. At this time, the restriction range determination unit 93 is inversely proportional to the detected inclination angle. The upper heights of the allowable movement range 5 and the expansion allowable movement range 6 are set.

  For example, when compared with FIG. 4A located on the horizontal trajectory R, the allowable movement range 5 is set lower than the allowable movement range 2 and the expansion allowable movement range 6 is set lower than the expansion allowable movement range 3. By setting in this way, it becomes possible to set the allowable movement range 5 and the expansion allowable movement range 6 according to the magnitude of the overturning moment acting on the railroad work vehicle 1, so that the roadway work vehicle 1 during traveling can be reliably overturned. Can be prevented. At this time, the allowable work range 7 in which the work table 40 is movable is set to a range that is slid to the upper side of the slope with respect to the central axis C of the track-and-work vehicle 1 in consideration of the inclination angle α.

  In the above-described embodiment, the track-and-work vehicle 1 has exemplified the configuration in which the work platform 40 can be moved by operating the boom 30 in both cases of traveling and stopping on the track R, but is not limited to this configuration. . For example, a configuration may be employed in which the operation of the boom 30 is regulated so that the work table 40 exceeds the allowable movement range 2 shown in FIG. Further, it is possible to restrict the boom 30 so as not to operate while traveling on the track R.

  Moreover, in the above-mentioned embodiment, the setting of the substantially rectangular allowable movement range and the enlargement allowable movement range shown in FIGS. 4A and 4B is an example, and is not limited to such a range setting. For example, it is possible to adopt a configuration in which the range is set according to the installation state of the peripheral equipment of the track R (the installation height of the overhead line, the distance between the right and left pillars supporting the overhead line, etc.).

  In the above-described embodiment, the configuration of a railroad work vehicle provided with an aerial work device provided with a work table 40 at the tip of the boom 30 is illustrated as the railroad work vehicle 1 to which the present invention is applied. However, the configuration is not limited to this configuration. . For example, the present invention can also be applied to a track-and-rail work vehicle configured to move the work table up and down by a scissor link or a vertical mast. Furthermore, the present invention can also be applied to a railroad work vehicle in which a hook is hung from the tip of a boom and a crane device configured to lift and move a load is provided on a chassis.

It is a side view of a track-and-rail work vehicle to which the present invention is applied. It is a side view near the iron wheel of the above-mentioned track-and-rail work vehicle. It is a hydraulic circuit diagram of the iron wheel part of the land work vehicle. It is the figure which showed the allowable movement range and the expansion allowable movement range, Comprising: (a) is the case where the said land work vehicle is located on the horizontal track | orbit R, (b) is the case where it is located on the inclined track | orbit R. Each is shown. It is a control system figure of the above-mentioned land work vehicle.

Explanation of symbols

R Track 1 Track-and-rail work vehicle 2 Permitted travel range 3 Extended permissible travel range 9 Overhead (track facility)
10 Body (vehicle)
12 chassis 14 (14L, 14R) iron wheel (left iron wheel, right iron wheel) (wheel for track running)
25 Body tilt angle detector (tilt angle detector)
40 Working table (working equipment)
90 Track controller (travel regulation device)
91 Vehicle posture calculation unit (position detection unit)
93 Restriction range determination unit (control unit)

Claims (2)

A vehicle capable of traveling on a track with orbital running wheels; a work device disposed on the vehicle chassis so as to be movable up and down at least with respect to the vehicle platform; and the vehicle according to a movement position of the work device. In a track-and-rail work vehicle having a travel regulation device that regulates travel operation,
The travel regulation device is
A position detection unit for detecting a movement position of the working device;
When the vehicle travels on the track, the permissible movement range of the work device and the permissible movement range are set to be expanded outward so as not to interfere with the track facility provided around the track. And a control unit having an expansion allowable movement range,
The controller is
Restricting the start of the vehicle when the movement position of the work device detected by the position detection unit is outside the allowable movement range in a stopped state where the vehicle is stopped on the track,
A railroad work vehicle that restricts travel of the vehicle when the working device is positioned outside the enlargement allowable movement range in a traveling state. The chassis is provided with an inclination angle detector that detects an inclination angle of the chassis with respect to a horizontal plane,
The allowable movement range and the expansion allowable movement range are set so as to extend vertically upward with respect to the track surface on which the track is provided, and a large tilt angle of the chassis detected by the tilt angle detection unit. The track-and-rail work vehicle according to claim 1, wherein the vertical upper height is set according to the height.

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