JP5937405B2 - Cranes for rail vehicles - Google Patents

Description

  The present invention relates to a crane for mounting on a railroad vehicle that is mounted on a railroad vehicle.

  A track-and-rail vehicle is a special vehicle that can travel on a railway track by adding iron wheels and a turntable to the vehicle that can travel on the road. By the way, in the crane work on the track, the height from the track to the overhead line is 4.5 m, so the limit height at the time of the work is regulated to 4.0 m. Therefore, it is necessary to observe this restricted height (4.0 m) also in the crane work with the crane for mounting on a rail vehicle. Therefore, a crane lift higher than this limit height is not necessary.

By the way, a general crane is provided with a column post installed on a swivel base and a telescopic boom installed at the front end of the column post so that it can be raised and lowered, and by a hook provided at the front end of the telescopic boom. Lifting a suspended load as high as possible is one of the performances and is characterized (for example, see Patent Documents 1 and 2). However, its features and performance contradict the work in the crane head that is required in the above-mentioned overhead wire, and an electric shock accident will occur if the telescopic boom exceeds the limit height and contacts the overhead wire. Become.
Therefore, conventionally, the height of the boom tip (in order to prevent the height of the telescopic boom from exceeding the limit height by mounting a height limiting device by electric control on a general vehicle-mounted crane is provided. The boom boom angle was controlled within the limit height (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 4-7294 JP-A-11-171474 JP 2000-335889 A

However, since the height limiting device described in Patent Document 3 is for electrically controlling the height of the telescopic boom, in the actual work on the track, workers on the site hate that the work efficiency decreases. The height restriction device can be released and used. In this case, if the telescopic boom mistakenly exceeds the limit height and the overhead wire comes into contact with the telescopic boom, a power failure (electric shock accident) will occur. In addition, if the overhead line is cut, it may cause a serious delay in the next day's train schedule. Thus, since the conventional height limiting device in a crane is based on electrical control, there is a risk that the limitation may be canceled by the judgment of the worker on site. In addition, there is a risk of starting the work without forgetting to set the height limit.
Therefore, the present invention has been made in view of the above-described problems, and the height of the telescopic boom is regulated so as not to exceed the restricted height by the height restricting mechanism based on the basic structure of the crane itself. It is an object of the present invention to provide a crane for mounting on an orbital vehicle.

In order to solve the above problems,軌陸vehicle mounted crane according to one embodiment of the present invention, for軌陸vehicle mounted thereon is mounted on road-rail vehicle having a can be placed iron wheels on railroad tracks and Ru is driven by a hydraulic A crane, a base having an outrigger, a column post installed on a swivel base on the base, a telescopic boom installed at a front end portion of the column post so as to be stretchable only in a horizontal direction, and the telescopic is movable along the boom provided with a trolley device and formed by hanging a hook, said telescopic boom, in turn thicker boom as being composed of a plurality of boom base end boom becomes narrowest boom top And the telescoping device is movable in the longitudinal direction of the boom at the lower part of the front boom. Column post, said on swivel machine base is telescopically disposed vertically Rutotomoni, maximum elongation the upper surface height of the telescopic boom when the column post, placing the road-rail vehicle on the railroad tracks in a state, in Rukoto is set not only raised to limit the height of the contact wire, the boom hoisting mechanism, the boom hoisting mechanism of the boom pivot mechanism and the boom extension mechanism is characterized in that it is a non-equipped.

According to the railway vehicle mounting crane according to one aspect of the present invention, the telescopic boom is installed at the tip of the column post so as to be telescopic only in the horizontal direction, and the column post is vertically moved on the swivel base. So that the height of the upper surface of the telescopic boom when the column post is fully extended can be raised only to the limit height of the overhead line when the railcar is placed on the railroad track. in Rukoto is set to, the boom hoisting mechanism, since the boom hoisting mechanism of the boom pivot mechanism and the boom extension mechanism is non equipped, the vehicle-mounted cranes specific of not equipped with a relief function itself of the telescopic boom base structure By reviewing itself, the height of the telescopic boom can be regulated so as not to exceed the limit height.

Here, in the rail vehicle mounted crane according to one aspect of the present invention, the column post is nested in two cylindrical casings in the vertical direction, and the lower casing of the two casings is The lower end is fixed to the swivel base on the base, and the upper casing is slidable along the longitudinal direction of the lower casing from the upper end side of the lower casing so as to cover the outside of the lower casing And a winch device is provided at the top of itself, and the two casings are connected to each other so as to be slidable in the vertical direction by an extension cylinder provided on the back of the column post. preferable. Such a configuration is suitable for installing the column post so that it can extend and contract in the vertical direction on the swivel base.

  Moreover, in the crane for mounting on a railroad vehicle according to one aspect of the present invention, when the railroad vehicle performs a work in a curve section of a railway, the crane main body may be leveled while the iron wheels are installed on the track. The cant correction device further includes a support bracket fixed on a chassis frame between a cab and a loading platform of the rail car, and the support bracket tilts to the left and right with a support shaft in the front-rear direction. A crane mount that is pivotally supported; the base that is mounted and fixed on the crane mount; the base having the outrigger; and the crane mount between the crane mount and the support bracket. It is preferable to have one tilt cylinder attached as tilting means for adjusting the tilt angle. If it is such a configuration, the curve of the track is inclined toward the inside (cant), but when the railroad vehicle works in the curve section, with the iron wheels installed on the track, The crane body can be leveled by correcting the inclination angle (cant angle).

In addition, in the crane for an on-rail vehicle according to one aspect of the present invention, an operation for operating a control valve for supplying and discharging pressure oil necessary for an actuator for the telescopic operation of the column post or the telescopic boom. lever is provided on both sides of the crane, both the sides of the operating lever, Rutotomoni provided on a side face of the base, through a connecting rod connecting said control valve and said operating lever, the operation of the operating lever It is preferable to be configured to be transmitted to the control valve. Such a configuration is suitable for the operator to operate the crane from a low position beside the track.

  Further, in the railway vehicle mounting crane according to one aspect of the present invention, the hydraulic circuit for driving the telescopic boom and the trolley device includes a telecylinder for extending and contracting the telescopic boom, and the trolley device along the longitudinal direction of the boom. A trolley motor to be moved is provided in parallel with the two electromagnetic switching valves, and each electromagnetic switching valve switches the oil path with a switching device provided at the distal end and the proximal end of the telescopic boom. The boom switching device is switched by the contact with the trolley device to switch the oil path of the corresponding electromagnetic switching valve, and the boom proximal switching device is the telescopic boom when the telescopic boom is contracted. The oil path of the corresponding electromagnetic switching valve is switched by the contact of the two, and when the switching device at the end of the boom is not activated, the two electromagnetic switching valves are No oil passages to drive only the serial trolley motor, when switcher device of the boom base end has not been operated, it is preferable that the two electromagnetic switching valve forms an oil passage so as to drive only the tele cylinder. With such a configuration, the trolley device can be moved over the entire length of the boom in the longitudinal direction by one operation. For example, when only one operation lever is operated, the trolley device is extended from a so-called flank position near the crane center axis. The suspended load can be transported to the tip of the boom.

  As described above, according to the present invention, the height of the boom tip can be regulated so that the height of the telescopic boom does not exceed the restricted height by the height restricting mechanism based on the basic structure of the crane itself.

1 is a left side view of an embodiment of a crane for mounting on a railroad vehicle according to an aspect of the present invention. FIG. 2 is a front view of FIG. 1, in which a cant angle correction state by a cant correction device is also illustrated. It is a block diagram explaining one Embodiment of the hydraulic circuit of the crane for track-and-vehicle vehicles concerning one mode of the present invention. It is a left side view (figure which shows a run state on a road) of one embodiment in the state where a crane for mounted on a railroad vehicle concerning one mode of the present invention was mounted in a railroad vehicle. It is a figure which shows the state which mounted the track-and-rail vehicle of FIG. 4 on the track of a railroad. 6 is a diagram illustrating a state in which the trolley device is moved from the base end side of the telescopic boom to the tip end side along the boom longitudinal direction in the track-and-rail vehicle of FIG. It is a figure which shows the state which extended | stretched the telescopic boom further from the state shown in FIG. It is a rear view of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
As shown in FIG. 1 and FIG. 2, in this railcar mounted crane 1, a base 3 including an outrigger 2 is mounted and fixed on a crane mounting base 6. A swivel base 19 is provided on the base 3, and an extendable column post 4 is erected on the swivel base 19 so as to be turnable. A telescopic boom 5 is fixed to the upper end of the column post 4 in a horizontal posture. The telescopic boom 5 is provided with a trolley device 20 that hangs down a hook 21 so as to be movable along the telescopic boom 5. As shown in FIG. 2, the ground contact position GK of the outrigger 2 is at a position lower than the railroad track R, and the crane 1 itself travels on the road by an iron wheel 14 projecting downward by a track-railing device. It rises from the ground to a higher position than the state (see FIG. 5). Therefore, the outrigger 2 that is used in, for example, a loader work crane is used as the outrigger 2 that has a longer stroke than usual.

  In addition, since the operator also operates the crane 1 from a low position on the side of the track, in this crane 1 for mounting on an orbital vehicle, it is easy to equip the crane 1 with the operation lever at a position lower than usual. To be able to reach. In other words, in a general crane, the operation lever is arranged on the base having the outrigger. If the operation lever is arranged on the base, the operation from the side of the track is not performed unless the hand is extended. The lever may be out of reach. Therefore, in this crane 1 for railcar mounting, as shown in FIG. 8, a plurality of operation levers 31 are arranged on the side surface of the base 3 (in this example, the back surface of the column post 4 (the surface opposite to the telescopic boom 5 side)). The control lever 33 is connected to a control valve 33 for supplying and discharging pressure oil necessary for the actuator by a connecting rod 32. Thereby, compared with the case where the operation lever is arrange | positioned on the base 3, since the operation lever 31 is provided in the low position, the operativity from the track side is improving.

In addition, as shown in FIG. 2, the crane 1 for mounted on a track-and-rail vehicle has an inclination angle (cant angle) α with the iron wheel 14 installed on the track R when the track-and-rail vehicle 10 performs work in a curved section. It is equipped with a cant correction device that can level the crane body.
That is, as shown in the figure, the crane mounting base 6 is pivotally supported by the support bracket 7 so as to be tiltable left and right by a crane rotation shaft 8 which is a support shaft facing in the front-rear direction. In addition, as a tilting means for adjusting an inclination angle (cant angle) α (see FIG. 2) of the crane mounting base 6 with respect to the rail car 10 (see FIG. 4) between the crane mounting base 6 and the support bracket 7. A tilting cylinder (cant correction cylinder) 9 is attached. And the support bracket 7 which supports the crane mounting base 6 is fixed on the chassis frame 13 between the cab 11 and the loading platform 12 of the track-and-rail vehicle 10, as shown in FIG. In order for the railway vehicle to resist centrifugal force, the curve of the railroad is inclined (cant) inward, but by extending and retracting the tilting cylinder 9, the crane 1 can be operated as shown in FIG. The posture of the crane mounting base 6 can be adjusted so as to be level with the ground. As a result, the crane 1 for mounted on a railroad vehicle corrects the inclination angle (cant angle) α with the iron wheel 14 being installed on the track R when the railcar 10 performs work in a curve section, and the crane 1 The main body can be leveled.

Further, the crane 1 for mounting on a railroad vehicle is configured to adjust the height of the telescopic boom 5 by the expansion and contraction of the column post 4.
Specifically, as shown in FIGS. 1 and 5, the column post 4 has a plurality of cylindrical casings nested in the vertical direction. In this example, the upper casing 41 is composed of two upper and lower casings 41 and 42, the lower end of the lower casing 42 is fixed to the swivel base 19 on the base 3, and the upper casing 41 is positioned so as to cover the outer side of the lower casing 42. The housing 42 is slidably fitted along the axial direction of the lower housing 42 from the upper end side. The two casings 41 and 42 need to secure as many overlapping portions as possible of the upper and lower casings 41 and 42 in order to prevent the middle folding when the column post 4 is extended. Therefore, the lower housing 42 has a fitting structure that penetrates to the vicinity of the top plate of the upper housing 41 when the column post 4 is reduced. The upper and lower housings 41 and 42 are connected to each other by an extension cylinder (column cylinder) 43 provided on the back surface of the column post 4 (the surface opposite to the extension boom 5 side). Accordingly, the upper housing 41 slides up and down along the lower housing 42. As shown in FIG. 5, the upper surface height H of the telescopic boom 5 when the column post 4 is fully extended is the restricted height of the overhead line L (for example, in a state where the railroad vehicle is placed on the railroad track R). 4 m).

  Here, the crane 1 for mounting on a rail vehicle is configured such that the telescopic boom 5 does not rise and fall, and as shown in FIGS. 1 and 7, only telescopic operation by the telecylinder 54 is possible. In addition, on the side surface of the telescopic boom 5, an electromagnetic switching valve (described later) that switches between the hydraulic hose group and the telescopic boom 5 and the trolley device 20 is mounted.

  More specifically, the telescopic boom 5 is composed of a plurality of booms (three stages in this example). In this embodiment, the base end side boom 51 attached horizontally to the upper part of the column post 4 and the base end boom 51 are installed so that the base end boom 51 extends along the axial direction thereof. An intermediate boom 52 that is slidably movable, and a distal end boom 53 that is installed so as to insert the intermediate boom 52 and is slidably movable along the axial direction of the intermediate boom 52. It has. These booms 51, 52, and 53 are formed in a three-stage nesting shape that becomes a thicker boom at the tip. That is, among the booms, the proximal boom 51 is thin, the intermediate boom 52 is thicker than the proximal boom 51, and the distal boom 53 is thicker than the intermediate boom 52. The booms 51, 52, and 53 can only be expanded and contracted in the horizontal direction by the telecylinder 54, and the distal end boom 53 is the outermost frame when contracted.

  As shown in FIG. 1, the trolley device 20 has a traveling rail 24 directly attached along the lower surface of the tip boom 53, and a drive hydraulic motor (not shown) is installed inside the boom tip. A drive sprocket 25 connected to the drive shaft of the hydraulic motor is provided on the distal end side of the side surface of the tip boom, and a drive chain 27 is bridged between the driven sprocket 26 and the drive sprocket 25 provided on the proximal end side. Yes. The main body of the trolley device 20 is connected to the middle portion of the drive chain 27, and when the hydraulic motor is driven, the trolley device 20 is pulled by the drive chain 27 and along the traveling rail 24 on the lower surface of the tip boom 53. The trolley device 20 travels in the boom longitudinal direction. As a result, it is possible to suspend and move the load on the hook 21 to the front of the loading platform.

  The trolley device 20 itself includes only a sheave (not shown) for hanging a wire rope around a hook, and is not equipped with a winch device. The winch device 22 is provided on the upper portion of the upper housing 41 that is the movable side of the column post 4 that expands and contracts. Therefore, the mass of the device itself is made lighter by the amount of the winch device as compared with a device equipped with the winch device (for example, a telescopic boom with a trolley described in JP-A-5-97391). Therefore, since the mass of the winch device 22 is not added together with the suspended load at the time of the work, the overturning moment becomes advantageous by the mass, and the suspended load amount can be increased. In particular, since the moment per mass increases in proportion to the increase in the working radius, the higher the effect, the more pronounced the farther work.

  Here, the telescopic operation of the telescopic boom 5 and the moving operation of the trolley device 20 are the total length of the trolley device 20 in the boom longitudinal direction by operating one boom telescopic lever (one of the plurality of operation levers 31). It is possible to move across. Thereby, the suspended load can be transported from the position of the crane 1 to the tip of the boom at the time of extension by operation of only one boom telescopic lever.

  Specifically, as shown in the block diagram of the hydraulic circuit in FIG. 3, the trolley motor 64 for moving operation of the trolley device 20 and the telecylinder 54 for extending and retracting the telescopic boom 5 use one control valve 60. The oil passages are connected in parallel via the two electromagnetic switching valves 61 and 62. The hydraulic pump 70 that receives power from the PTO supplies pressure oil to the upper and lower control valves 60 and 72, and pressure oil necessary for driving is distributed from the upper and lower control valves 60 and 72 to each actuator. In this example, pressure oil is supplied from the control valve (lower) 72 to the tilting cylinder 9 that corrects the cant and the orbital traveling device that takes in and out the iron wheels 14. Further, the control valve (upper) 60 supplies pressure oil necessary for each actuator (54, 64, 66 to 69) of the crane 1 body.

  As shown in the figure, two electromagnetic switching valves 61 and 62 are used to switch the pressure oil to the two actuators 54 and 64 for the trolley device 20 and the telescopic boom 5. The switching of the oil paths of the two electromagnetic switching valves 61 and 62 is performed based on input signals from limit switches 81 and 82 as switching devices (see FIG. 1).

  That is, the limit switch 81 for energizing the electromagnetic switching valve 61 is provided so as to directly contact the trolley device 20 at a stop position where the trolley device 20 has moved to the tip of the boom of the telescopic boom 5. In addition, the limit switch 82 that energizes the electromagnetic switching valve 62 is the telescopic boom 5 (the base end portion of the intermediate boom 52) when the telescopic boom 5 is contracted to the boom contraction storage position of the boom base end portion of the telescopic boom 5. It is provided so that it may contact | abut directly. Here, for convenience, when the limit switch 81 is operated, the electromagnetic switching valve 61 is normally open, and when the limit switch 82 is operated, the electromagnetic switching valve 62 is normally closed. Therefore, when the telescopic boom 5 is completely retracted and the trolley device 20 is not moved to the boom tip, for example, in a state before starting the crane work, the limit switch 81 at the boom tip is not operated, so the electromagnetic switching valve. Reference numeral 61 indicates that the energization is cut off. Since the limit switch 82 at the boom base end portion is in operation, the electromagnetic switching valve 62 is also cut off. When the electromagnetic switching valve 61 is energized, an oil passage is formed with the telecylinder 54, and when the electromagnetic switching valve 61 is not energized, an oil passage is formed with the trolley motor 64. When the electromagnetic switching valve 62 is also energized, an oil passage is formed with the telecylinder 54, and an oil passage is formed with the trolley motor 64 in a non-energized state. While the trolley device 20 is in operation, both the electromagnetic switching valves 61 and 62 are in a non-energized state. Conversely, when the boom is extended, both the electromagnetic switching valves 61 and 62 are also energized.

When the boom extending / contracting operation lever 31 is operated to the extension side, the pressure oil discharged from the control valve 60 flows into the electromagnetic switching valve 61. When the electromagnetic switching valve 61 is not energized (that is, when the trolley device 20 is not moved to the tip of the boom), only the trolley device 20 is always driven. On the other hand, the electromagnetic switching valve 62 during operation of the trolley device 20 is not energized because the telescopic boom 5 is in the contracted retracted state and the limit switch 82 is struck, so that the pressure oil is supplied to the tank via the control valve 60. Form a return oil passage.
The trolley device 20 that has moved to the tip of the boom hits the limit switch 81 at the tip of the boom, and the electromagnetic switching valve 61 starts energization. Thereby, the pressure oil flows to the telecylinder 54 side. When the telescopic cylinder 5 starts to extend due to the extension of the telecylinder 54, the base end portion of the intermediate boom 52 is also detached from the limit switch 82, so that the electromagnetic switching valve 62 is also energized.

  Next, when the telescopic boom 5 is in the extended state and the boom extending / contracting operation lever 31 is operated to the reduction side, the telecylinder 54 starts to reduce. Since the electromagnetic switching valve 62 remains energized, the pressure oil discharged from the control valve 60 at this time flows only into the telecylinder 54 side. At the same time that the telescopic boom 5 is completely reduced, the base end portion of the intermediate boom 52 strikes a limit switch 82 provided at the base end position of the telescopic boom 5. Thereby, when the electromagnetic switching valve 62 is de-energized, the oil passage is switched to the trolley motor 64 side, and the trolley device 20 travels to the boom base end side.

Next, the operation, action, and effect of the crane 1 for mounting a rail vehicle will be described.
As shown in FIG. 4, when the vehicle 1 is traveling, the railcar-mounted crane 1 stores the outrigger 2 above the bottom surface of the crane, and the iron wheels 14 are also housed. On the other hand, at the time of work, as shown in FIG. 5, the iron wheel 14 is placed on the railroad track R, the outrigger 2 is extended downward, the column post 4 is expanded and contracted, and the trolley device 20 is extended along the tip boom 53. Move, telescopic boom 5 is extended and used.

The trolley device 20 operates the boom extending / contracting operation lever 31 so that, as shown in FIG. Move along the direction. When the telescopic boom 5 is extended, first, the trolley device 20 travels from the base end position of the telescopic boom 5 toward the distal end (see FIG. 6), and then the trolley device 20 completely moves to the distal end. As shown in FIG. 7, the booms 51, 52, 53 start to extend in the order from the proximal boom 51 to the distal boom 53. On the contrary, at the time of reduction, when the telescopic boom 5 is fully reduced, the trolley device 20 starts traveling to the base end position of the telescopic boom.
According to this railcar mounted crane 1, the telescopic boom 5 is composed of a plurality of booms 51, 52, and 53, and the base end side boom 51 becomes narrower and the reverse boom assembly becomes a thicker boom as it becomes the distal end boom 53, Since the trolley device 20 is provided on the lower surface of the telescopic boom 5, it is possible to ensure good workability in the loading platform.

In particular, according to this crane 1 for rail vehicle mounting, a general vehicle mounting crane lifts and retracts the telescopic boom with a hoisting cylinder (derrick cylinder) with the boom mounting pin at the top of the column post as the center of rotation. The boom 5 eliminates the hoisting cylinder and is installed at the tip of the column post 4 so as to be extendable and retractable only in the horizontal direction, and the column post 4 is installed on the revolving machine base 19 so as to be extendable in the vertical direction. As a result, the boom raising mechanism, boom turning mechanism, and boom telescopic mechanism are not equipped with a boom hoisting mechanism. As shown in FIG. 5, the telescopic boom 5 is maintained in a horizontal position by extending and contracting the telescopic column post 4 while maintaining the horizontal position of the telescopic boom 5. It is possible to change the height of only. Therefore, since it does not physically exceed the limit height H (for example, 4 m) of the overhead wire, the crane work can be reliably performed within the limit height.
The track-mounted vehicle-mounted crane according to the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

1 Rail-mounted crane (crane body)
2 Outrigger 3 Base 4 Column post 5 Telescopic boom 6 Crane mount (Kant compensator)
7 Support bracket (Kant corrector)
8 Crane rotation axis (Kant correction device)
9 Tilt cylinder (Cant correction device)
DESCRIPTION OF SYMBOLS 10 Railroad vehicle 13 Chassis frame 14 Iron wheel 19 Swivel machine base 20 Trolley device 21 Hook 41 Upper housing | casing 42 Lower housing | casing 43 Telescopic cylinder (column cylinder)
51 Base end boom 52 Intermediate boom 53 Front end boom 54 Telecylinder

Claims (5)

A軌陸vehicle mounted crane that will be driven by hydraulic pressure is mounted on a road-rail vehicle having a placeable iron wheels on the railroad tracks,
A base having an outrigger, a column post installed on a swivel base on the base, a telescopic boom installed at the front end of the column post so as to be stretchable only in a horizontal direction, and moved along the telescopic boom A trolley device that is provided and hangs down a hook,
The telescopic boom is composed of a plurality of booms and is a telescoping type in which the base end side boom is the thinnest boom as it becomes the thinnest end boom, and the front end boom is the outermost frame when contracted,
The trolley device is movable along the boom longitudinal direction at the lower part of the tip boom.
The column post, said on swivel machine base is telescopically disposed vertically Rutotomoni, the upper surface height of the telescopic boom at maximum extension of the column posts, mounting the road-rail vehicle on the railroad tracks in location state, in Rukoto is set not only raised to limit the height of the contact wire, the boom hoisting mechanism, the boom hoisting mechanism of the boom pivot mechanism and the boom extension mechanism is characterized in that it is a non-equipped Crane for rail vehicle mounting. In the column post, two cylindrical casings are nested in the vertical direction, and among these two casings, the lower casing is fixed to the swivel base on the base, and the upper casing Is fitted so as to be slidable along the longitudinal direction of the lower casing from the upper end side of the lower casing so as to cover the outer side of the lower casing, and a winch device is provided at the upper part thereof. The crane for mounting a railroad vehicle according to claim 1, wherein the two casings are connected to each other so as to be slidable in the vertical direction by an expansion / contraction cylinder provided on the back surface of the column post. When the rail car performs work in a curve section of a railway, further comprising a cant correction device that can level the crane body with the iron wheels installed on the track,
The cant correction device includes a support bracket fixed on a chassis frame between a driver's cab and a loading platform of the rail vehicle, and a crane mounted on the support bracket so as to be tiltable to the left and right with a support shaft in the front-rear direction. A tilt for adjusting an inclination angle of the crane mount relative to the rail vehicle between the base, the base having the outrigger mounted and fixed on the crane mount, and the crane mount and the support bracket The crane for mounting an orbital vehicle according to claim 1 or 2, further comprising a tilting cylinder attached as means. An operation lever for operating a control valve for supplying and discharging pressure oil necessary for an actuator for the expansion / contraction operation of the column post or the expansion / contraction boom is provided on both sides of the crane .
Both the sides of the operating lever, Rutotomoni provided on a side face of the base, through a connecting rod connecting said control valve and said operating lever, the operation of the operation lever is configured to be transmitted to the control valve The crane for mounting on a rail vehicle according to any one of claims 1 to 3. In the hydraulic circuit for driving the telescopic boom and the trolley device, a tele-cylinder for expanding and contracting the telescopic boom and a trolley motor for moving the trolley device along the longitudinal direction of the boom are parallel to the two electromagnetic switching valves. Provided,
Each electromagnetic switching valve is switched between oil passages by a switching device provided at the distal end and the proximal end of the telescopic boom,
The switching device at the tip of the boom switches the oil path of the corresponding electromagnetic switching valve by contact with the trolley device, and the switching device at the base of the boom contacts the telescopic boom when the telescopic boom is reduced. The oil path of the corresponding electromagnetic switching valve can be switched by
When the boom switching device is not activated, the two electromagnetic switching valves provide an oil passage to drive only the trolley motor. When the boom proximal switching device is not activated, the two electromagnetic switching valves are The crane for mounting an orbital vehicle according to any one of claims 1 to 4, wherein an oil passage is formed to drive only the telecylinder.

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