JP2014061956A - Running regulation device of track running service car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a running regulation device of a track running service car which secures the stability of the track running service car and enables the track running service car to run while moving a work table.SOLUTION: A running regulation device includes: boom posture detection means 30 which detects a posture of a boom 16; movable load detection means 34 which detects a movable load of a work table 17; upper limit value storage means 41 which stores a boom posture upper limit value and a movable load upper limit value; and running regulation means 42 which makes it impossible for a vehicle body 11 to run when the posture of the boom 16 exceeds the boom posture upper limit value or the movable load of the work table 17 exceeds the movable load upper limit value. The running regulation device suppresses an overturning moment of a track running work vehicle 1 to a low level and secures the stability. The running regulation device enables the track running work vehicle 1 to run while moving the work table 17. Thus, the track running work vehicle enables continuous work resulting in improvement of the work efficiency.

Description

  The present invention relates to a travel regulation device for a track traveling work vehicle. More particularly, the present invention relates to a travel restriction device for restricting traveling according to the posture of a boom in a track traveling work vehicle having a work table provided at the tip of a boom and capable of traveling on a track.

  2. Description of the Related Art A track traveling work vehicle is known as a work vehicle used when performing maintenance / inspection of various track facilities such as overhead wires, insulators, and signal facilities arranged along a track. The track traveling work vehicle includes a vehicle body that can travel on the track, a boom that is attached to the vehicle body and that can turn, undulate, and extend, and a workbench that can be turned at the tip of the boom. The boom is swung, raised and lowered, moved to a desired position, the work table is turned to a desired angle, and a worker on the work table performs maintenance and inspection of the track equipment.

  In order to perform maintenance / inspection work efficiently, the work table may be moved while traveling on a track while being moved to a desired position. However, when running a tracked work vehicle, the outrigger cannot be extended and the inertial force due to acceleration and deceleration works, so there is a risk that the tracked work vehicle may fall over stably depending on the position of the work table. is there. Therefore, the track traveling work vehicle is provided with a travel restriction device for restricting traveling by the posture of the boom in order to ensure stability.

  In the conventional travel regulation device, the work table is non-turning (the long direction of the work table is along the front-rear direction of the vehicle body), the boom is fully contracted, no turning (the state located in front of the vehicle body), Control is performed to allow travel only when the boom hoisting angle (height of the workbench) does not exceed the upper limit. By controlling in this way, stability is ensured because the workbench is located directly above the vehicle body, and maintenance / inspection of the overhead wire located directly above the track can be performed while traveling.

  However, with the conventional travel regulation device, it has been impossible to perform maintenance / inspection work while traveling on the track facility located at a position laterally away from the track. Therefore, as shown in FIG. 6, (1) after the track traveling work vehicle 100 is stopped at the work position (post P1), the work is performed by turning the boom 101 and the work table 102, and (2) after the work is completed. The boom 101 and the work table 102 are returned to the non-turning state, the track traveling work vehicle 100 is traveled to the next work position (post P2), and (3) the boom 101 is stopped again at the work position (post P2). In addition, the work table 102 was turned to perform the work. The above operations (1), (2), and (3) must be repeated, and there is a problem that it takes a lot of work.

On the other hand, the travel restriction device described in Patent Literature 1 calculates the maximum projecting position from the position of the boom tip with respect to the vehicle body and the turning angle of the work table, and sets the travelable region in which the maximum projecting position is set in advance. When it is determined that it has exceeded, the traveling of the track traveling work vehicle is restricted.
According to this travel restricting device, the movable range of the work table can be secured widely, and the track traveling work vehicle can be traveled so that the work table does not come into contact with the track equipment arranged around the track. Can do.

  However, since the traveling regulation device does not consider the overturning moment of the track traveling work vehicle, the track traveling work vehicle may fall even if the work table is at a position where it does not contact the track facility. .

Japanese Patent No. 3740348

  In view of the above circumstances, an object of the present invention is to provide a travel regulation device for a track traveling work vehicle that can travel while moving a work table while ensuring the stability of the track traveling work vehicle.

A travel restriction device according to a first aspect of the present invention is a travel restriction device provided in a track traveling work vehicle including a vehicle body capable of traveling on a track, a boom provided on the vehicle body, and a workbench provided at a tip of the boom. A boom posture detecting means for detecting the posture of the boom, a load detecting means for detecting a load on the work table, a boom posture upper limit value which is an upper limit value of the boom posture, and the work table. An upper limit value storage means for storing an upper limit value of the load load, which is an upper limit value of the load load, and the boom posture upper limit value in which the posture of the boom detected by the boom posture detection means is stored in the upper limit value storage means Or when the work load detected by the work load detection means exceeds the load load upper limit value stored in the upper limit storage means. Characterized in that it comprises a means.
In the travel regulating device according to a second aspect of the present invention, in the first aspect, the upper limit value storage means is an upper limit value of the falling moment of the track traveling work vehicle, instead of the boom posture upper limit value and the load capacity upper limit value. The moment upper limit value is stored, and the travel restricting unit is configured to perform the orbital travel from the boom posture detected by the boom posture detecting unit and the loading load of the work table detected by the loaded load detecting unit. A fall moment of the work vehicle is obtained, and when the fall moment exceeds the fall moment upper limit value stored in the upper limit value storage means, the vehicle body is disabled from traveling.
According to a third aspect of the present invention, there is provided a travel regulating apparatus according to the first aspect, wherein the track traveling operation is performed based on a tilt angle detecting means for detecting the tilt angle of the vehicle body and the tilt angle of the vehicle body detected by the tilt angle detecting means. The boom posture upper limit value and / or the load load upper limit value is obtained so that the vehicle overturning moment does not exceed the stable moment, and the upper limit value calculating means is stored in the upper limit value storing means.
According to a fourth aspect of the present invention, in the first aspect of the invention, the upper limit storage means is an upper limit value of the falling moment of the track traveling work vehicle, instead of the upper limit value of the boom posture and the upper limit value of the load capacity. The moment upper limit value is stored, and the travel restricting means includes the vehicle body inclination angle detected by the inclination angle detecting means, the boom attitude detected by the boom attitude detecting means, and the load load detecting means. The overturning moment of the track traveling work vehicle is obtained from the detected load on the workbench, and when the overturning moment exceeds the overturning moment upper limit value stored in the upper limit value storage means, the vehicle travels through the vehicle body. It is characterized by being impossible.
According to a fifth aspect of the present invention, in the first, second, third or fourth invention, the upper limit value storage means is a speed upper limit value which is an upper limit value of the traveling speed of the vehicle body and / or the vehicle body. An acceleration upper limit value that is an upper limit value of the acceleration is stored, and the travel restriction means is a range in which the travel speed of the vehicle body does not exceed the speed upper limit value stored in the upper limit value storage means, and / or The vehicle body is allowed to travel within a range in which the acceleration of the vehicle body does not exceed the acceleration upper limit value stored in the upper limit value storage means.
In the first, second, third, fourth, or fifth invention, the travel regulating device of the sixth invention is the boom movable range, the worktable stackable amount, and the boom posture detecting means detected by the boom posture detecting means. Display means for displaying all or part of the posture of the boom and the loaded load of the work table detected by the loaded load detecting means is provided.

According to the first aspect of the invention, traveling is disabled when the boom posture or the loaded load exceeds the upper limit value, so that the overturning moment of the track traveling work vehicle can be kept low, and the stability can be ensured. In addition, the worktable can be moved within the range in which the posture of the boom or the loaded load does not exceed the upper limit value and can travel as it is, so that continuous work is possible and work efficiency is improved.
According to the second aspect of the invention, the work table can be moved within a range in which the overturning moment does not exceed the upper limit value, so that the movable range of the work table becomes wider and the work efficiency is improved.
According to the third aspect of the invention, since the boom posture upper limit value and / or the load load upper limit value is obtained based on the tilt angle of the vehicle body, even if the vehicle body is tilted due to the track cant, the overturning moment of the track traveling work vehicle is kept low. Stability is ensured. In addition, the movable range of the work table can be widened on the upper side of the inclination, and the work efficiency is improved.
According to the fourth aspect of the invention, the work table can be moved within a range in which the overturning moment does not exceed the upper limit value, so that the movable range of the work table becomes wider and the work efficiency is improved.
According to the fifth aspect of the present invention, since the track traveling work vehicle can be traveled within a range where the travel speed and / or acceleration does not exceed the upper limit value, the inertial force due to acceleration and deceleration can be kept low, and the stability can be ensured.
According to the sixth aspect, since the movable range of the boom, the loadable amount, the posture of the boom, and the loaded load are displayed, it is easy for the worker to set the posture of the boom and the loaded load to a state where the vehicle can travel.

It is a block diagram of the travel regulation device concerning a 1st embodiment of the present invention. It is explanatory drawing of a maintenance / inspection operation | work of the track equipment by a track-and-rail vehicle provided with the said travel control apparatus. It is a block diagram of a travel regulation device concerning a 3rd embodiment of the present invention. It is a block diagram of the travel regulation device concerning a 4th embodiment of the present invention. It is a side view of a common railroad vehicle. It is explanatory drawing of a maintenance / inspection operation | work of the track installation by the track-and-rail vehicle provided with the conventional travel control apparatus.

Next, an embodiment of the present invention will be described with reference to the drawings.
The travel regulation device according to the present invention is provided in a track traveling work vehicle. As a track running work vehicle, a track-only work vehicle that can run only on a track (rails, sleepers, roadbeds, etc.) or a track-type work vehicle that can run on ordinary roads is equipped with an iron wheel for track running. And a track-and-land vehicle (hereinafter referred to as a “railway vehicle”) that can travel on both general roads and tracks.

Hereinafter, as a track traveling work vehicle provided with the travel restriction device according to the present invention, a general configuration thereof will be described using a railroad vehicle as an example.
In FIG. 5, reference numeral 1 is a railroad vehicle, and reference numeral 11 is a vehicle body of the railroad vehicle 1. The vehicle body 11 is a track type capable of traveling on a general road, and has a tire 12 for traveling on a general road. The vehicle body 11 is provided with an iron wheel 13 for running on the track. This iron wheel 13 can be drawn up and down by a hydraulic cylinder or the like. When traveling on a general road, the steel wheel 13 is pulled upward, the tire 12 is grounded, and the vehicle engine is used for traveling. When traveling on a track, the vehicle travels by using a track traveling motor 21 that projects the iron wheel 13 downward and contacts the rail R to rotate the iron wheel 13.

  The vehicle body 11 is provided with an outrigger 14 that ensures stability during work. Further, a swivel base 15 is mounted on the rear side of the loading platform of the vehicle body 11 and can be swiveled 360 ° in a horizontal plane by a swivel motor 22.

  A boom 16 is attached to the swivel base 15 so as to be raised and lowered. The boom 16 includes a main boom 16a on the base end side, and a plurality of sub booms 16b and 16c that are telescopically inserted into the main boom 16a. The expansion and contraction operation of each sub boom 16b, 16c is performed by the expansion cylinder 23, and the length of the boom 16 can be changed. The boom 16 is not limited to the three-stage type including the main boom 16a and the two sub booms 16b and 16c, and may be a two-stage type or a four-stage type or more. Further, a one-stage type in which the sub boom is not provided and the boom 16 cannot be expanded and contracted may be used.

  A base end portion of the boom 16 is pivotally supported by the swivel base 15, and a hoisting cylinder 24 is attached between the boom 16 and the swivel base 15. When the hoisting cylinder 24 is extended, the boom 16 stands, and when the hoisting cylinder 24 is contracted, the boom 16 falls.

  At the tip of the boom 16 is provided a vertical post that is always kept vertical by the leveling cylinder regardless of the undulation angle of the boom 16, and a bowl-like work table 17 on which a worker can get on the vertical post is provided. It is pivotally supported. The workbench 17 can be turned in a horizontal plane by driving an electric motor or the like.

(First embodiment)
Below, the travel control apparatus A which concerns on 1st Embodiment of this invention is demonstrated.
As shown in FIG. 1, the travel restricting apparatus A according to the present embodiment is a boom posture detecting means 30 that detects the posture of the boom 16, a hoisting angle detector 31 that detects the hoisting angle of the boom 16, and the turning of the boom 16. A turning angle detector 32 for detecting the angle and an expansion / contraction length detector 33 for detecting the length of the boom 16 are provided. In addition, the travel regulation device A includes a load detection unit 34 that detects the load on the workbench 17 (the weight of a load, a worker, or the like placed on the workbench 17).

  The travel regulation device A includes an upper limit storage unit 41 configured by a storage device such as a memory, and a travel regulation unit 42 configured by an arithmetic device such as a CPU. The detected values detected by the undulation angle detector 31, the turning angle detector 32, the extension / contraction length detector 33, and the loaded load detection means 34 are input to the travel restriction means 42. As will be described later, the travel restricting means 42 compares each input detection value with each upper limit value stored in the upper limit value storing means 41 and restricts the travel of the vehicle body 11 based on the result.

  The upper limit value storage means 41 stores a boom posture upper limit value that is an upper limit value of the posture of the boom 16. The boom posture upper limit value is a hoisting angle upper limit value that is an upper limit value of the hoisting angle of the boom 16, a turning angle upper limit value that is an upper limit value of the boom 16, and an expansion / contraction that is an upper limit value of the length of the boom 16. It consists of a length upper limit. The hoisting angle upper limit value is determined as an upper limit angle when the boom 16 is raised from that state, for example, when the boom 16 is level with respect to the vehicle body 11 and the hoisting angle is 0 °. The upper limit value of the turning angle is, for example, an upper limit angle when the boom 16 is turned clockwise from the state when the boom 16 is positioned in front of the vehicle body 11, and the boom 16 is turned counterclockwise. It is determined as the upper limit angle for turning. The expansion / contraction length upper limit value is determined as, for example, the upper limit of the length from the proximal end portion to the distal end portion of the boom 16.

  The upper limit value storage means 41 stores a load load upper limit value that is an upper limit value of the load capacity of the work table 17. The load load upper limit value is determined as an upper limit of the weight of a load or a worker that can be placed on the work table 17, for example.

  Further, the upper limit value storage means 41 stores a speed upper limit value that is an upper limit value of the traveling speed of the vehicle body 11. The speed upper limit value is determined as a value at which acceleration and deceleration of the rail vehicle 1 can be suppressed to a predetermined acceleration or less, for example.

  These boom posture upper limit values (undulation angle upper limit value, turning angle upper limit value, telescopic length upper limit value), loading load upper limit value, and speed upper limit value are each determined as one fixed value, for example. In this case, these upper limit values are as long as the posture of the boom 16 does not exceed the boom posture upper limit value, the load on the workbench 17 does not exceed the load load upper limit value, and the traveling speed of the vehicle body 11 does not exceed the speed upper limit value. The stability of the rail vehicle 1 is ensured, that is, the overturning moment of the rail vehicle 1 is set so as not to exceed the stability moment.

  Here, the overturning moment refers to a direction in which the tracked vehicle 1 is turned over, which is generated by the load of the platform 17, the weight of the platform 17, the weight of the boom 16, and the inertial force caused by acceleration or deceleration of the tracked vehicle 1. This is the moment that acts. Further, the stable moment is a moment that acts in a direction against a falling moment caused by the weight of the vehicle body 11 or the like. When the overturning moment exceeds the stability moment, the tracked vehicle 1 falls over.

  The travel restricting means 42 is the boom posture detected by the boom posture detecting means 30 (the undulation angle, the turning angle, the extension / contraction length) and the boom posture upper limit value (the undulation angle upper limit value, The upper limit value of the turning angle and the upper limit value of the expansion / contraction length), the load load of the work table 17 detected by the load load detection means 34 and the load load upper limit value stored in the upper limit value storage means 41, If any one of the detected values exceeds the upper limit value, it is determined that the vehicle cannot travel. Further, when all the detected values do not exceed the upper limit value, it is determined that traveling is possible. Then, the travel regulation unit 42 outputs the determination result to the travel control device 51.

  The travel control device 51 is a device that controls the travel of the rail vehicle 1. The travel control device 51 is connected to travel operation means 52 for operating the travel of the rail vehicle 1. The travel operation means 52 is a lever or switch provided on the work table 17 or the vehicle body 11.

  When it is determined that traveling is not possible, the travel regulation unit 42 outputs a travel impossibility signal to the travel control device 51. In this case, the traveling control device 51 stops the track traveling motor 21 regardless of the operation of the traveling operation means 52 by the worker. That is, the rail car 1 is stopped.

  On the other hand, when it is determined that traveling is possible, the travel regulation means 42 outputs a travel permission signal to the travel control device 51 and outputs the speed upper limit value stored in the upper limit value storage means 41 to the travel control device 51. In this case, the traveling control device 51 causes the vehicle body 11 to travel by controlling the driving of the track traveling motor 21 in accordance with the operation of the traveling operation means 52 by the worker. At this time, the vehicle body 11 is allowed to travel within a range where the travel speed of the vehicle body 11 does not exceed the speed upper limit value.

  The travel restriction device A further includes display means 43. The display means 43 is provided on the work table 17 or the vehicle body 11. The display means 43 includes a movable range of the boom 16 determined by the boom posture upper limit value (an undulating range, a swingable range, and an extendable range), a loadable amount of the work table 17 determined by the load load upper limit value, and a boom posture detection means 30. The current posture of the boom 16 detected in step (1) and the current load on the work platform 17 detected by the load detection means (34) are displayed. For example, by displaying the swivelable range of the boom 16 and the current turning angle, it is possible to know how far the boom 16 can be turned for the worker and how much room is left up to the turning angle upper limit value. Become. The display means 43 includes the boom 16 undulation possible range, the turnable range, the extendable / retractable range, the loadable amount of the workbench 17, the current boom 16 undulation angle, the turn angle, the extendable length, and the current workbench 17. Of these loading loads, all or a part of them may be displayed.

Next, the maintenance / inspection work of the track facility by the track-and-rail vehicle 1 including the travel restriction device A having the above-described configuration will be described with reference to FIG.
(1) After stopping the track-and-rail vehicle 1 at the work position (post P1), the boom 16 is raised, swung, and expanded / contracted to move the work table 17 to a desired position, and the work table 17 is swung to provide track equipment. Perform maintenance and inspection work.
Here, the operator can change the posture of the boom 16 within a range not exceeding the boom posture upper limit value by raising, lowering, turning, and extending and retracting the boom 16 while checking the display means 43. In addition, it is possible to load the work table 17 within a range that does not exceed the load load upper limit value. That is, it becomes easy for the worker to set the posture of the boom 16 and the loaded load in a state where the worker can travel.

(2) After completion of the work at the work position (post P1), the worker operates the travel operation means 52 to run the rail vehicle 1 to the next work position (post P2).
Here, the travel restricting means 42 compares the posture of the boom 16 with the boom posture upper limit value, compares the loaded load of the workbench 17 with the loaded load upper limit value, and all detected values do not exceed the upper limit value. It is determined that the vehicle can travel. The travel control device 51 controls the drive of the track travel motor 21 to travel the vehicle body 11 in accordance with the operation of the travel operation means 52 by the worker. At this time, since the travel of the vehicle body 11 is allowed in a range where the travel speed of the vehicle body 11 does not exceed the speed upper limit value, the inertial force due to the acceleration and deceleration of the rail vehicle 1 can be suppressed low, and the stability can be ensured.

(3) When the next work position (post P2) is reached, the rail car 1 is stopped and the maintenance and inspection work of the track equipment is performed as it is.
As described above, the work platform 17 can be moved within the range in which the posture of the boom 16 or the loaded load does not exceed the upper limit value and can travel as it is, so that the boom 16 and the work platform 17 are There is no need to operate, continuous work is possible and work efficiency is improved.

In the above (2), the travel restriction means 42 compares the posture of the boom 16 with the boom posture upper limit value, compares the loaded load of the work table 17 with the loaded load upper limit value, and one of the detected values is one. However, if the upper limit is exceeded, it is determined that traveling is not possible. Then, the traveling control device 51 keeps the track traveling motor 21 stopped regardless of the operation of the traveling operation means 52 by the worker.
In this case, if the worker changes the posture of the boom 16 or reduces the load on the workbench 17 and all the detected values do not exceed the upper limit value, the rail vehicle 1 can travel. It becomes. As described above, since the traveling is disabled when the posture of the boom 16 or the loaded load exceeds the upper limit value, the overturning moment of the traveling railroad vehicle 1 can be suppressed low, and the stability can be ensured.

  In the procedures (1), (2), and (3) above, after changing the posture of the boom 16 and moving the work table 17 to a desired position while the railcar 1 is stopped, the railcar 1 is made to run. Thus, it may be configured such that the posture of the boom 16 can be changed only while the railcar 1 is stopped, or may be configured so that the posture of the boom 16 can be changed while the railroad vehicle 1 is traveling.

  In the case where the posture of the boom 16 can be changed even while traveling, if the posture of the boom 16 is changed during traveling of the railroad vehicle 1 and exceeds the boom posture upper limit value, the travel regulating means 42 sends a travel disabling signal to the travel control device 51. The traveling control device 51 stops the track traveling motor 21. That is, the running railroad vehicle 1 is stopped. Therefore, it is possible to prevent the railcar 1 from stopping against the intention of the worker if the worker is warned before the boom 16 exceeds the boom posture upper limit value. Therefore, it is preferable.

In the above embodiment, the boom posture upper limit value (the hoisting angle upper limit value, the turning angle upper limit value, the extension length upper limit value), the load load upper limit value, and the speed upper limit value are each determined as one fixed value. However, the present invention is not limited to this, and a plurality of stepwise or stepless values may be determined for each of these upper limit values.
It is known that the overturning moment of the railway vehicle 1 is obtained from the posture of the boom 16 and the load on the work table 17. Therefore, for example, the above upper limit values may be determined as combinations of all values at which the falling moment becomes a predetermined value.

  Thus, when a plurality of values are determined for each upper limit value, the allowable range of the posture of the boom 16, the load on the work platform 17, and the traveling speed of the vehicle body 11 are larger than when a single fixed value is determined. Become wider. For example, the work table 17 can be moved to the side by reducing the load on the work table 17. Therefore, the work efficiency of maintenance / inspection work for the track equipment is further improved.

  In the above embodiment, instead of or in addition to the speed upper limit value, an acceleration upper limit value that is an upper limit value of the acceleration of the vehicle body 11 may be stored in the upper limit value storage means 41. The acceleration upper limit value is determined as, for example, an upper limit of acceleration when the vehicle body 11 is accelerated and an upper limit of acceleration when the vehicle body 11 is decelerated.

  When it is determined that traveling is possible, the travel regulation unit 42 outputs a travel enable signal to the travel control device 51 and outputs the acceleration upper limit value stored in the upper limit value storage unit 41 to the travel control device 51. The travel control device 51 controls the drive of the track travel motor 21 to travel the vehicle body 11 in accordance with the operation of the travel operation means 52 by the worker. At this time, the vehicle body 11 is allowed to travel within a range where the acceleration of the vehicle body 11 does not exceed the acceleration upper limit value.

  As described above, the overturning moment of the railway vehicle 1 changes due to the inertial force due to acceleration and deceleration. Therefore, by directly limiting the acceleration of the vehicle body 11, the overturning moment can be more reliably suppressed to a low level, and the railcar 1 can be prevented from overturning.

  Further, when the boom 16 is a one-stage type that does not include a sub-boom, the boom posture upper limit value is composed of an undulation angle upper limit value and a turning angle upper limit value, and does not include an expansion / contraction length upper limit value. Further, the expansion / contraction length detector 33 is not provided. In this case, the travel restricting means 42 only compares the undulation angle and turning angle of the boom 16 with the undulation angle upper limit value and the turning angle upper limit value as a comparison between the posture of the boom 16 and the boom posture upper limit value. .

(Second Embodiment)
The travel regulation device B according to the second embodiment of the present invention is the travel regulation device A according to the first embodiment. Instead of the boom posture upper limit value and the load load upper limit value in the upper limit value storage means 41, the rail control vehicle 1 The fall moment upper limit value which is the upper limit value of the fall moment is stored. For example, the upper limit value of the overturning moment is determined as a value obtained by multiplying the stability moment of the rail vehicle 1 by a safety factor smaller than 1.

  The travel regulation means 42 calculates the overturning moment of the rail vehicle 1 from the attitude of the boom 16 detected by the boom attitude detection means 30 and the loaded load of the work table 17 detected by the loaded load detection means 34. Then, when the calculated overturning moment exceeds the overturning moment upper limit value stored in the upper limit storage means 41, it is determined that traveling is impossible. In addition, it is determined that the vehicle does not travel when the upper limit of the falling moment is not exceeded. Since the remaining structure is the same as that of the travel control apparatus A according to the first embodiment, the description thereof is omitted.

  In the present embodiment, the workbench 17 can be moved within a range in which the overturning moment does not exceed the upper limit value, so that the boom posture upper limit value and the speed upper limit value are determined as certain values as in the first embodiment. The movable range of the workbench 17 becomes wider. As a result, the work efficiency of the maintenance / inspection work of the track equipment is further improved.

(Third embodiment)
As shown in FIG. 3, the travel restriction device C according to the third embodiment of the present invention is provided with an inclination angle detection means 35 for detecting the inclination angle of the vehicle body 11 in the travel restriction device A according to the first embodiment. ing. Further, an upper limit value calculating means 44 for calculating the boom posture upper limit value and the load load upper limit value based on the tilt angle of the vehicle body 11 detected by the tilt angle detecting means 35 and storing it in the upper limit value storing means 41 is provided. Yes. Since the remaining structure is the same as that of the travel control apparatus A according to the first embodiment, the same members are denoted by the same reference numerals and description thereof is omitted.

  The track is provided with a cant in the curved portion by laying the outer rail higher than the inner rail. The rail car 1 is inclined to the side by this cant. Thus, when the track-and-truck 1 inclines, the overturning moment also changes. More specifically, the movable range of the work table 17 can be widened above the inclination, and the load can be increased. On the other hand, on the lower side, the movable range of the work table 17 is narrowed, and it is necessary to reduce the load.

  Based on the inclination angle of the vehicle body 11 detected by the inclination angle detection means 35, the upper limit value calculation means 44 calculates the boom posture upper limit value and the load load upper limit value so that the overturning moment of the rail vehicle 1 does not exceed the stable moment. To do. For example, the upper limit value of the turning angle is such that the upper limit of turning to the upper side of the inclination is increased and the upper limit of turning to the lower side of the inclination is reduced. Further, the upper limit value of the loaded load is set to be small so that the stability of the rail vehicle 1 can be secured even when the boom 16 is turned downward on the slope.

  The travel restricting means 42 is detected by the boom 16 posture and load detection means 34 detected by the boom posture detection means 30 using the boom posture upper limit value and the load load upper limit value changed by the upper limit value calculation means 44. The loaded load of the work table 17 is compared with the upper limit value, and it is determined whether traveling is possible or not.

  In the present embodiment, since the boom posture upper limit value and the load load upper limit value are obtained based on the tilt angle of the vehicle body 11, even if the vehicle body 11 is tilted due to the cant of the track, the overturning moment of the tracked vehicle 1 can be kept low and stable. Can be secured. In addition, the movable range of the workbench 17 can be widened on the upper side of the inclination, and the work efficiency is improved.

  In the present embodiment, when the canned vehicle 1 travels and the cant changes, the inclination of the vehicle body 11 changes, and accordingly, the boom posture upper limit value and the load load upper limit value change. Therefore, the upper limit values may be exceeded without changing the posture of the boom 16. In this case, the travel regulation means 42 outputs a travel disabling signal to the travel control device 51, and the travel control device 51 stops the track travel motor 21. For this reason, if the construction is such that the warning is given to the worker by, for example, issuing an alarm before the boom 16 exceeds the boom posture upper limit value, the railway vehicle 1 will stop unintentionally. Since it can prevent, it is preferable.

Even if all the upper limit values are changed based on the inclination angle of the vehicle body 11, the change is not known for the worker, which may be difficult to use. Therefore, you may comprise so that some upper limit values may be changed based on the inclination-angle of the vehicle body 11. FIG.
In general, the loading load of the work platform 17 does not change during traveling of the track-and-rail vehicle 1, and the height of the track facility is substantially constant. There is little to do. Under such circumstances, for example, only the upper limit value of the turning angle may be changed based on the inclination angle of the vehicle body 11.

  Furthermore, if the display unit 43 displays the range in which the boom 16 can be turned and the current turning angle, the worker can see the change in the turning angle upper limit value due to the inclination of the vehicle body 11 and how far the boom 16 can turn. It will be understood how much room is left until the upper limit of the turning angle.

(Fourth embodiment)
As shown in FIG. 4, the travel restriction device D according to the fourth embodiment of the present invention includes, in the travel restriction device A according to the first embodiment, the upper limit value storage means 41 and the boom posture upper limit value and the load load upper limit. Instead of the value, the fall moment upper limit value that is the upper limit value of the fall moment of the rail vehicle 1 is stored. In addition, an inclination angle detection means 35 is provided, and the detected value is input to the travel restriction means 42.

  The travel restricting means 42 includes the inclination angle of the vehicle body 11 detected by the inclination angle detection means 35, the attitude of the boom 16 detected by the boom attitude detection means 30, and the work table 17 detected by the load load detection means 34. The overturning moment of the rail vehicle 1 is calculated from the loaded load. Then, when the calculated overturning moment exceeds the overturning moment upper limit value stored in the upper limit storage means 41, it is determined that traveling is impossible. In addition, it is determined that traveling is possible when the upper limit of the falling moment is not exceeded. Since the remaining structure is the same as that of the travel control apparatus A according to the first embodiment, the description thereof is omitted.

  In the present embodiment, the workbench 17 can be moved within a range in which the overturning moment does not exceed the upper limit value, so that the boom posture upper limit value and the speed upper limit value are determined as certain values as in the first embodiment. The movable range of the workbench 17 becomes wider. As a result, the work efficiency of the maintenance / inspection work of the track equipment is further improved. Further, even if the vehicle body 11 is inclined due to the canting of the track, the overturning moment of the tracked vehicle 1 can be kept low and the stability can be ensured.

DESCRIPTION OF SYMBOLS 1 Railroad vehicle 11 Car body 12 Tire 13 Iron wheel 14 Outrigger 15 Turntable 16 Boom 17 Worktable 21 Orbit travel motor 30 Boom attitude | position detection means 31 Relief angle detector 32 Turning angle detector 33 Expansion / contraction length detector 34 Loading load detection means 35 Inclination angle detection means 41 Upper limit value storage means 42 Travel restriction means 43 Display means 44 Upper limit value calculation means 51 Travel control device 52 Travel operation means

Claims (6)

A travel regulation device provided in a track traveling work vehicle comprising a vehicle body capable of traveling on a track, a boom provided on the vehicle body, and a workbench provided at a tip of the boom,
Boom posture detecting means for detecting the posture of the boom;
A load detection means for detecting the load on the work table;
An upper limit storage means for storing a boom posture upper limit value that is an upper limit value of the posture of the boom and a load load upper limit value that is an upper limit value of the load capacity of the workbench;
When the boom posture detected by the boom posture detection means exceeds the boom posture upper limit value stored in the upper limit value storage means, or the load on the work platform detected by the load load detection means is A travel regulation device, comprising: travel regulation means for prohibiting travel of the vehicle body when the load load upper limit value stored in the upper limit value storage means is exceeded. The upper limit storage means stores an overturning moment upper limit value that is an upper limit value of the overturning moment of the track traveling work vehicle, instead of the boom posture upper limit value and the loaded load upper limit value.
The travel regulation means obtains the overturning moment of the track traveling work vehicle from the posture of the boom detected by the boom posture detection means and the load of the work table detected by the load load detection means, 2. The travel restriction device according to claim 1, wherein the vehicle body is not allowed to travel when the overturning moment exceeds the overturning moment upper limit value stored in the upper limit value storage means. An inclination angle detecting means for detecting an inclination angle of the vehicle body;
Based on the inclination angle of the vehicle body detected by the inclination angle detection means, the boom posture upper limit value and / or the load load upper limit value is obtained so that the overturning moment of the track traveling work vehicle does not exceed the stability moment, The travel restriction device according to claim 1, further comprising an upper limit value calculation unit that is stored in the upper limit value storage unit. Inclination angle detection means for detecting the inclination angle of the vehicle body,
The upper limit storage means stores an overturning moment upper limit value that is an upper limit value of the overturning moment of the track traveling work vehicle, instead of the boom posture upper limit value and the loaded load upper limit value.
The travel restricting means includes an inclination angle of the vehicle body detected by the inclination angle detecting means, an attitude of the boom detected by the boom attitude detecting means, and a loading load of the work table detected by the loading load detecting means. From the above, the overturning moment of the track traveling work vehicle is obtained, and when the overturning moment exceeds the overturning moment upper limit value stored in the upper limit value storing means, the vehicle body is made untravelable. Item 1. The travel restriction device according to item 1. The upper limit value storage means stores a speed upper limit value that is an upper limit value of the traveling speed of the vehicle body and / or an acceleration upper limit value that is an upper limit value of the acceleration of the vehicle body,
The travel restricting means includes a range in which the travel speed of the vehicle body does not exceed the speed upper limit value stored in the upper limit value storage means, and / or the acceleration in which the acceleration of the vehicle body is stored in the upper limit value storage means. 5. The travel regulating device according to claim 1, wherein the travel of the vehicle body is permitted within a range not exceeding an upper limit value. All or a part of the movable range of the boom, the loadable amount of the worktable, the posture of the boom detected by the boom posture detection means, and the load of the worktable detected by the load load detection means 6. The travel restricting device according to claim 1, further comprising display means for displaying.

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