JP4557496B2 - Railroad work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road and track 軌陸 working vehicle capable traveling (railroad rails) above.
[0002]
[Prior art]
Railroad work vehicles are used to carry out work such as construction and inspection of trolley lines and railway equipment installed along railroad rails, and are constructed based on trucks. Iron wheels (orbital travel wheels) mounted at four locations on the front, rear, left and right of the vehicle body to travel on a track (hereinafter referred to as railroad rail) on a vehicle body having wheels (road vehicle wheels) and capable of traveling on the road, and the track There is known a vehicle that includes a turntable that facilitates the entry work when entering the vehicle (see, for example, Patent Document 1).
[0003]
When working on a high-altitude track using the track-and-rail work vehicle having the above configuration, first, travel on the road with the boom and workbench stored, move to the level crossing near the work site, Then, the vehicle is stopped so as to cross the railroad rail, the turntable is extended and operated to lift and support the vehicle body, and in this state, the vehicle body is turned to be parallel to the railroad rail. Then, after extending the iron wheel for running the track, the turntable that supported the vehicle body is stored, and the tread of the iron wheel is placed on the railroad rail. As a result, the track-and-rail work vehicle can travel (track travel) on a railroad rail using an iron wheel, and can move to a work site.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-202120
[Problems to be solved by the invention]
In the track-and-work vehicle having the above-described configuration, a swivel that is pivotably provided in front of the vehicle body, and a boom that is attached to the swivel so as to be able to move up and down and extend and retract and extend rearward of the vehicle body and stored. A work table provided at the tip of the boom and configured to be stored in the rear position of the vehicle body, a power unit that supplies driving force to the turntable, the swivel base, and the boom, and a swinging movement and expansion / contraction to the swivel base There are some which are configured to include a boom that is movably provided, and a work board for worker boarding that is provided at the tip of the boom. The operation of the turntable, the turning movement of the turntable, the raising and lowering movement of the boom, and the expansion and contraction movement are generally performed by a hydraulic actuator such as a hydraulic motor or a hydraulic cylinder. The hydraulic pressure is supplied to these hydraulic actuators by a hydraulic pump.
[0006]
In a railroad work vehicle, a hydraulic pump is driven by an engine mounted on a vehicle body or driven by an electric motor. As the driving by the engine, for example, an engine different from the engine used for vehicle traveling is mounted on a truck vehicle constituting an aerial work vehicle on the vehicle body, and the hydraulic pump is driven by this engine. There are things (ie engine drive power units). On the other hand, as the drive by the electric motor, an electric motor driven by power supplied from a battery disposed on the vehicle body is mounted, and the hydraulic pump is driven by this electric motor ( That is, there is an electric power unit). In recent years, in these power units, noise is suppressed by using, for example, a soundproofing material, and consideration is given to a working environment such as a residential area or at night.
[0007]
Here, when attaching to a vehicle body to the above (low noise) power unit, it was required to attach the boom unit at a position that can secure the widest working range of the boom when working at high places.
[0008]
The present invention has been made in view of such a problem, and a power unit is provided so that a boom working range can be satisfactorily ensured in a railroad work vehicle in which a swivel is arranged at a front portion on a vehicle body and a boom is stored rearward. An object is to provide an arranged track-and-rail work vehicle.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a track-and-rail work vehicle according to the present invention includes a vehicle body capable of traveling on a road having a driving cabin at a front portion, and a track traveling wheel that is attached to the vehicle body and travels on a track. (For example, the iron wheel 4 in the present embodiment), a swivel base provided on the front portion of the vehicle body so as to be pivotable, and provided on the swivel base so as to be able to move up and down , and extend and retract to the rear of the vehicle body. A boom configured to be configured; a work table provided at a front end of the boom and configured to be stored at a rear position of the vehicle body; and a power unit for supplying a driving force for driving the swivel and the boom ( for example, the engine drive power unit 20 in the present embodiment, the electric power unit 30) and provided with, in a state where the boom and work platform are stored, the swivel base has a boom is pivotally connected the upper is mounted on the vehicle body Than the lower constructed to be inclined obliquely forward so as to be positioned in front, the power unit is disposed on the opposite side of the space on the vehicle body and the boom of a storage state be between swivel base and the driver cabin Rutotomoni The size is lower than the upper part of the swivel .
[0010]
According to such a configuration, since the power unit is arranged between the operation cabin and the swivel base, there is no possibility of hindering the swivel operation of the swivel base, and the rear working radius of the boom is reduced (especially when the lift of the work platform is low). It is possible to sufficiently ensure the boom work range.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, the 1st invention in this application is demonstrated using FIGS. 1-3. An example of a track-and-rail work vehicle 1 according to the first invention of the present application is shown in FIG. This track-and-rail work vehicle 1 includes a truck vehicle having a driving cabin 2a at a front portion, and tire wheels (road driving wheels) 3 attached at four front, rear, left, and right sides of the vehicle body 2 are tired. The vehicle can be driven on a road by being driven by a wheel engine (not shown). Further, at four positions on the front and rear, left and right of the vehicle body 2, iron wheels (rail travel wheels) 4 are rotatably attached to iron wheel support members 4 a that are swingably supported by the vehicle body 2.
[0014]
The iron ring support member 4a is oscillated by the expansion / contraction operation of the iron cylinder overhanging storage hydraulic cylinder 5. By oscillating the iron ring support member 4a, the iron ring 4 is extended downward or mounted on the vehicle body 2. It can be stored. Further, in each of the front and rear, the pitch between the left and right iron wheels 4 and 4 can be changed in accordance with the width of the rail R (track) for the railway. The track-and-rail work vehicle 1 can travel on the rail R by placing the vehicle body 2 on the rail R with the iron wheel 4 overhanging, and driving the iron wheel 4 by a not-shown iron wheel driving hydraulic motor (hydraulic motor). it can.
[0015]
In place of driving by such a hydraulic motor, the iron wheel 4 is configured to be freely rotatable, and the tire wheel 3 (rear wheel) attached to the rear portion of the vehicle body 2 is in contact with the rail R. It is also possible to drive to obtain a driving force.
[0016]
A turntable 6 for attaching and moving the track work vehicle 1 to the rail R is attached to the lower center of the vehicle body 2. The turntable 6 can be extended downward or stored upward by the expansion / contraction operation of the hydraulic cylinder 7 for extending the storage stand.
Further, the vehicle body 2 can be turned horizontally with respect to the turntable 6 by manual operation (human power). A vehicle body turning hydraulic motor may be provided so that the vehicle body 2 can turn horizontally with respect to the turntable 6.
[0017]
Outrigger jacks 9 that can be expanded in the width direction of the vehicle body 2 and that can be expanded in the vertical direction are provided at four locations on the front, rear, left, and right sides of the vehicle body 2. The vehicle body 2 is lifted and supported by widening and extending and projecting downward.
[0018]
A swivel base 10 that can swivel freely with respect to the vehicle body 2 is attached to a front portion of the vehicle body 2 and is driven by a swing motor (hydraulic motor) (not shown) 11. A base end portion is pivotally connected to the upper part of the swivel base 10, and the undulation movement can be freely performed by the undulation cylinder 12, and the telescopic movement can be telescopically performed by the built-in expansion / contraction cylinder 13 (not shown). A boom 14 is attached.
[0019]
A vertical post 15 (not shown) is attached to the tip of the boom 14 so as to be swingable up and down. The vertical post 15 is leveled by a leveling mechanism so that the vertical post 15 is always directed vertically upward regardless of the angle of undulation of the boom 14. The vertical post 15 is provided with a work board 16 for operator boarding that can be swiveled horizontally (freely swingable).
[0020]
When moving to the work site or not performing work at a high place, the boom 14 turns the swivel base 10 so as to face the rear of the vehicle body 2, and then contracts and falls down to move the boom 14 backward. It is assumed that the work table 16 is positioned at the rear of the vehicle body 2. Further, when working at a high place, the boom 14 can be lifted and extended from this stored state, and the work table 16 can be moved to a desired high place for work.
[0021]
In the track-and-work vehicle 1 having such a configuration, the engine drive power unit 20 is provided between the driving cabin 2a and the swivel base 10 in front of the vehicle body 2 (the hatched portion in FIG. 1A). It is arranged. The engine drive power unit 20 covers the outer periphery with a soundproof cover 21 having openings for supplying and exhausting air as shown in FIG. 1 (b), and inside the soundproof cover 21 as shown in FIG. 1 (c). The engine 22, a hydraulic pump 23 driven by the engine 22, a radiator 24, and the like are housed, and is configured as a low noise unit that suppresses noise generated from the unit as much as possible. When the hydraulic pump 23 is driven by the engine 22, the hydraulic oil from the oil tank 25 is discharged by the hydraulic pump 23, and this hydraulic oil is controlled by a control valve (not shown) and the hydraulic actuator, that is, the iron ring overhang associated with the iron wheel 4. Storage hydraulic cylinder 5 and iron wheel drive hydraulic motor, overhanging storage hydraulic cylinder 7 relating to the turntable 6, jack cylinder relating to the outrigger jack 9, turning motor 11 relating to the turntable 10, and hoisting cylinder relating to the boom 14 12, each of the operations is controlled by being supplied to the telescopic cylinder 13 or the like.
[0022]
In the track-and-rail work vehicle 1 configured as described above, the work bench 16 is positioned rearward on the vehicle body 2 as shown in FIG. The outer diameter dimension of the track-and-rail work vehicle at the time of storing 14 can be made small. Further, as shown in FIG. 2 (b), the swivel base 10 is arranged at the front portion of the vehicle body 2 and the boom 14 is configured to extend on the vehicle body 2 at the rear of the vehicle body. 2) The rear working radius can be taken sufficiently, and a wide working range can be secured.
[0023]
When the railroad work vehicle 1 having the above-described configuration is used for construction and inspection of railway facilities such as a stretched line and a trolley line on the rail R, first, the tire wheel 3 is driven to close the work site. Drive on the road to the level crossing. During such road traveling, the iron wheel 4 and the turntable 6 are stored in the vehicle body 2.
[0024]
When arriving at the railroad crossing near the work site, the track work vehicle 1 is stopped so as to cross the rail R, the engine 22 of the engine drive power unit 20 is driven, and a predetermined pressure oil is supplied from the hydraulic pump 23 to each hydraulic actuator. Exclude. Then, the turntable 6 is extended to support the vehicle body 2. Next, the vehicle body 2 is turned horizontally with respect to the turntable 6 manually (manually), and the iron wheel 4 is positioned on the rail R. Here, when the pitch of the left and right iron rings 4 and 4 is different from the width of the rail R, the pitch of the left and right iron rings 4 and 4 is fixed in accordance with the width of the rail R. Then, the iron wheel 4 is extended and operated, the turntable 6 is stored in the vehicle body 2, and the iron wheel 4 is placed on the rail R.
[0025]
Subsequently, the iron wheel 4 is rotationally driven by the railway drive motor, travels on the rail R, and moves to the work site. When the vehicle arrives at the work site, the vehicle is stopped and the outrigger jacks 9 arranged on the front, rear, left and right sides of the vehicle body 2 are grounded (that is, the vehicle is extended downward until a ground reaction force acts on the outrigger jack 9). 2 is supported stably. Then, the turntable 4 is swung, the boom 5 is raised and lowered, and the worktable 10 is moved to a desired height so that an operator who has boarded the worktable 10 can use an overhead wire or a trolley wire on the rail R. Carry out construction of railway facilities.
[0026]
After the work is completed, the outrigger jack 9 is contracted to lower the vehicle body 2 to place the iron wheel 4 on the rail R again, travel on the rail R and move to the level crossing, and store the iron wheel 4 in the vehicle body 2. The vehicle body 2 is supported and turned by the turntable 6. Then, after the turntable 6 is stored and the driving of the engine 22 of the engine drive power unit 20 is stopped, the tire wheel 3 can be driven to travel on the road and move to another destination. It has become.
[0027]
The first invention according to the present application is not limited to the above-described embodiment. For example, instead of the engine drive power unit 20, the electric power unit 30 may be used to supply the hydraulic oil to each hydraulic actuator as described above. The electric power unit 30 has an excellent soundproofing performance, and includes an electric motor that rotates upon receiving power supplied from a battery, a hydraulic pump that is driven by the electric motor, and the like. When the hydraulic pump is driven by the electric motor, the hydraulic oil from the oil tank is discharged from the hydraulic pump, and the hydraulic oil is controlled by the control valve, and the hydraulic actuator, that is, the hydraulic power for extending the turntable related to the turntable 6 is stored. The cylinder 7, the jack cylinder related to the outrigger jack 9, the swing motor 11 related to the swivel base 10, the hoisting cylinder 12 related to the boom 14, the telescopic cylinder 13, and the like are controlled.
[0028]
In order to supplement the output of the electric power unit 30, a hydraulic actuator that performs a heavy load operation (for example, an iron wheel overhanging hydraulic cylinder 5 and an iron wheel driving hydraulic motor related to the iron wheel 4) is operated. Alternatively, the output of a tire wheel engine that is a drive source of the tire wheel 3 may be taken out via a power take-off mechanism to drive the hydraulic pump.
[0029]
The mounting position of the electric power unit 30 configured as described above is disposed between the driving cabin 2 a and the swivel base 10 in the same manner as the engine drive power unit 20. It should be noted that the battery mounting position for supplying power to the electric power unit 30 is 1 in the side portions (positions {circle over (1)}, {circle over (2)}) of the electric power unit 30 and the rear portion of the vehicle body 2 as shown in FIG. Although it is preferable to arrange in two or two places (positions {circle over (3)}, {circle over (4)}), it is not limited to this.
[0030]
Next, a second invention in the present application will be described with reference to FIGS. In addition, the same number is attached | subjected about the component which has a function similar to 1st invention. The track-and-rail work vehicle 50 according to the second aspect of the invention has a truck vehicle having a driving cabin 2a at the front, and is equipped with tire wheels (for road running) mounted at four locations on the front, rear, left and right of the vehicle body 2. The wheel 3 can be driven by a tire wheel engine (not shown) to travel on the road. Further, at four positions on the front and rear, left and right of the vehicle body 2, iron wheels (rail travel wheels) 4 are rotatably attached to iron wheel support members 4 a that are swingably supported by the vehicle body 2.
[0031]
The iron ring support member 4a is oscillated by the expansion / contraction operation of the iron cylinder overhanging storage hydraulic cylinder 5. By oscillating the iron ring support member 4a, the iron ring 4 is extended downward or mounted on the vehicle body 2. It can be stored. Further, in each of the front and rear, the pitch between the left and right iron wheels 4, 4 can be changed in accordance with the width of the rail for rail (track) R. The track-and-rail work vehicle 1 can travel on the rail R by placing the vehicle body 2 on the rail R with the iron wheel 4 overhanging, and driving the iron wheel 4 by a not-shown iron wheel driving hydraulic motor (hydraulic motor). it can.
[0032]
In place of driving by such a hydraulic motor, the iron wheel 4 is configured to be freely rotatable, and the tire wheel 3 (rear wheel) attached to the rear portion of the vehicle body 2 is in contact with the rail R. It is also possible to drive to obtain a driving force.
[0033]
A turntable 6 for attaching and moving the track work vehicle 1 to the rail R is attached to the lower center of the vehicle body 2. The turntable 6 can be extended downward or stored upward by the expansion / contraction operation of the hydraulic cylinder 7 for extending the storage stand. Further, the vehicle body 2 can be turned horizontally with respect to the turntable 6 by manual operation (human power). A vehicle body turning hydraulic motor may be provided so that the vehicle body 2 can turn horizontally with respect to the turntable 6.
[0034]
Outrigger jacks 9 that can be expanded in the width direction of the vehicle body 2 and that can be expanded in the vertical direction are provided at four locations on the front, rear, left, and right sides of the vehicle body 2. The vehicle body 2 is lifted and supported by widening and extending and projecting downward.
[0035]
A swivel base 10 that can swivel freely with respect to the vehicle body 2 is attached to a front portion of the vehicle body 2 and is driven by a swing motor (hydraulic motor) (not shown) 11. A boom 14 whose base end is pivotally connected to the upper portion of the swivel base 4 and can be raised and lowered freely by a raising and lowering cylinder 12 and telescopically movable by a telescopic cylinder 13 (not shown). It is attached.
[0036]
A vertical post 15 (not shown) is attached to the tip of the boom 14 so as to be swingable up and down. The vertical post 15 is controlled by the leveling mechanism so that the vertical post 15 is always directed vertically upward regardless of the angle of the boom 14. The vertical post 15 is provided with a work board 16 for operator boarding that can be swiveled horizontally (freely swingable).
[0037]
When moving to the work site or not performing work at a high place, the boom 14 turns the swivel base 10 so as to face the rear of the vehicle body 2, and then contracts and falls down to move the boom 14 backward. It is assumed that the work table 16 is positioned at the rear of the vehicle body 2. Further, when working at a high place, the boom 14 can be lifted and extended from this stored state, and the work table 16 can be moved to a desired high place for work.
[0038]
As shown in FIG. 4, either the left or right side of the boom 14 on the rear side of the vehicle body 2 in the state where the boom 14 and the work table 16 are stored on the vehicle body 2, as shown in FIG. 4. at the side (it shows an example which is disposed in the width direction of the vehicle body right side in FIG. 4) and so as to be positioned below the working table 16, the engine drive power unit 20 is disposed. Since the engine drive power unit 20 has the same function as that of the first invention, a description thereof is omitted here.
[0039]
In the track-and-rail work vehicle 50 configured in this way, the engine drive power unit 20 is disposed at a position away from the swivel base 10 at the rear of the vehicle body 2, so that the length of the boom 14 can be sufficiently obtained. In particular, as shown in FIG. 5, it is possible to satisfactorily ensure the work range S of the boom 14 behind the vehicle body 2 (the hatched portion in the figure). Further, since the engine drive power unit 20 is disposed in an empty space on the lower surface of the work table 16 when the boom 14 is stored (see FIG. 4), the engine drive power unit 20 can have a compact configuration.
[0040]
In addition, in order to supply hydraulic oil to each hydraulic actuator, not the engine drive power unit 20 but the electric power unit 30 having good soundproof performance may be used as in the first invention. Since an electric power unit having the same function as that of the first invention is used, description thereof is omitted here.
[0041]
Further, in order to supplement the output of the electric power unit 30 described above, a hydraulic actuator (for example, an iron wheel overhanging hydraulic cylinder 5 and an iron wheel driving hydraulic motor related to the iron wheel 4) that operates with a heavy load is operated. In this case, the output of the tire wheel engine that is the drive source of the tire wheel 3 may be taken out via the power take-off mechanism to drive the hydraulic pump.
[0042]
In the second invention according to the present application, the mounting position of the electric power unit 30 configured as described above is the same as that of the engine drive power unit 20 in the state where the boom 14 and the work table 16 are stored on the vehicle body 2. and at the rear at the left or right side of the boom 14 is arranged so as to be positioned below the working table 16 (see FIG. 4).
[0043]
The mounting position of the electric power unit 30 configured as described above is disposed between the driving cabin 2 a and the swivel base 10 in the same manner as the engine drive power unit 20. Note that the battery mounting position for supplying power to the electric power unit 30 is as shown in FIG. 6A when the electric power unit 30 is attached to the rear right side of the vehicle body 2. It is preferably disposed at any position on the front part (position (5)) or the rear left side (position (6)) of the vehicle body 2. 6B, when the electric power unit 30 is attached to the rear left side of the vehicle body 2, the front part of the electric power unit 30 (position 7) and the rear right side of the vehicle body 2 (position ▲) 8)) is preferably disposed at any position.
[0044]
In the first and second inventions according to the present application, the present invention is not limited to the above embodiment, and can be improved as appropriate.
[0045]
【The invention's effect】
As described above, the track-and-rail work vehicle of the present invention includes a vehicle body that has a driving cabin at the front and can travel on a road, a wheel that is attached to the vehicle body and travels on a track, and a vehicle body. A swivel slidably provided at the upper front part , a boom provided on the swivel slidably and telescopically, and configured to extend and retract to the rear of the vehicle body, and a tip of the boom In a state in which the boom and the workbench are stored , the workbench configured to be stored in the rear position of the vehicle body and a power unit for supplying a driving force for driving the swivel and the boom . , swivel base is boom is constructed to be inclined obliquely forward as pivotably connected to the upper is positioned in front of the lower part mounted on the vehicle body, the power unit is provided between the swivel slide and driving cabin Storage state boot And is disposed on the opposite side of the space on the vehicle body Rutotomoni a revolving base of magnitude lower than the top.
[0046]
According to such a configuration, since the power unit is arranged between the operation cabin and the swivel base, there is no possibility of hindering the swivel operation of the swivel base, and the rear working radius of the boom is reduced (especially when the lift of the work platform is low). It is possible to provide a track-and-rail work vehicle that can be taken sufficiently and can ensure a good boom working range.
[Brief description of the drawings]
1A is a plan view, FIG. 1B is a side view, and FIG. 1C is a rear view of a railroad work vehicle according to a first aspect of the present invention.
FIG. 2 is a diagram for explaining a work range of the track-and-rail work vehicle in the first invention according to the present application.
FIG. 3 is a diagram for explaining the location of the battery of the track-and-rail work vehicle in the first invention according to the present application.
4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a rear view of a railroad work vehicle according to a second aspect of the present invention.
FIG. 5 is a diagram for explaining the working range of a track-and-rail work vehicle in the second invention according to the present application.
FIG. 6 is a diagram for explaining the location of the battery of the track-and-rail work vehicle in the second invention according to the present application.
[Explanation of symbols]
1, 50 Track-and-rail work vehicle 2 Car body 2a Driving cabin 3 Tire wheels (road driving wheels)
4 Iron wheel (Railway wheel)
6 Turntable 10 Swivel table 14 Boom 16 Work table 20 Engine drive power unit (power unit)
30 Electric power unit (Power unit)
R rail

Claims (1)

A vehicle body having a driving cabin at the front and capable of traveling on the road,
A wheel for traveling on a track attached to the vehicle body and traveling on the track;
A swivel provided on the front portion of the vehicle body so as to be turnable;
A boom which is provided on the swivel base so as to be movable up and down and extend and retractable, and is configured to extend and be stored behind the vehicle body;
A workbench provided at a tip of the boom and configured to be stored at a rear position of the vehicle body;
A power unit for supplying a driving force for driving the swivel base and the boom ,
In the state in which the boom and the work table are stored, the swivel is configured to be inclined obliquely forward so that the upper part to which the boom is pivoted is positioned forward of the lower part attached to the vehicle body. And
The power unit, the driving cabin and wherein the storage condition be between the revolving base is disposed on the boom opposite the space on the vehicle body Rutotomoni, with the magnitude lower than the top of the swivel table軌陸work vehicle, characterized in that there.

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