CA2030202C - Mobile vehicular apparatus with aerial working device - Google Patents
Mobile vehicular apparatus with aerial working deviceInfo
- Publication number
- CA2030202C CA2030202C CA 2030202 CA2030202A CA2030202C CA 2030202 C CA2030202 C CA 2030202C CA 2030202 CA2030202 CA 2030202 CA 2030202 A CA2030202 A CA 2030202A CA 2030202 C CA2030202 C CA 2030202C
- Authority
- CA
- Canada
- Prior art keywords
- boom
- control cabin
- aerial
- guide base
- vehicular apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J5/00—Manipulators mounted on wheels or on carriages
- B25J5/06—Manipulators combined with a control cab for the operator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J5/00—Manipulators mounted on wheels or on carriages
- B25J5/007—Manipulators mounted on wheels or on carriages mounted on wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/0084—Programme-controlled manipulators comprising a plurality of manipulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
Abstract
A mobile vehicular apparatus includes an aerial control cabin mounted on a tip end of a telescopic boom by a vertical shaft for turning movement about the vertical shaft, and an aerial working device disposed in front of the aerial control cabin. The aerial control cabin is movable back and forth with respect to the boom by a slide mechanism. The slide mechanism comprises a guide base mounted on the vertical shaft for turning movement thereabout, a slider mounted on the guide base so as to be movable back and forth with re-spect to the guide base, and actuator means for sliding the slider with respect to the guide base, the aerial control cabin being disposed on the guide base.
Description
MOBILE VEHICULAR APPARATUS WITH AERI~L WORKING DEVICE
BACKGROUND OF THE INVENTION
The present invention relates to a mobile vehicular apparatus which has a telescopic boom supporting on its tip end an aerial cabin or platform for carrying an operator, a manipulator device, and a working device such as a crane.
FIG. 7 of the accompanying drawings shows a conventional mobile vehicular apparatus, generally denoted at 50, which is arranged to perform various aerial jobs or tasks. The mobile vehicular apparatus 50 has a telescopic boom 51 with a cabin support shaft 52 vertically mounted on its tip end. The cabin support shaft 52 supports thereon an aerial control cabin 53 which can turn and swing with respect to the boom 51. The aerial control cabin 53 supports a manipulator device 55 forwardly of the cabin support shaft 52 and an auxiliary boom 54 upwardly of the cabin support shaft 62.
The control cabin 53 is movable in a spatial range that is a combination of the range in which the boom 51 can be raised and lowered, extended and contracted, and turned, and the range in which the control cabin 53 can be turn and swing about the cabin support shaft 52.
When the boom 51 is fixed in the position shown in FIG.
7 and a transformer 56 is suspended by the auxiliary boom 54, the auxiliary boom 54 is subjected to a considerable bending moment M because of the weight o~ the control cabin 53 and 2~30202 the weight of the transformer 56. If the control cabin 53 is turned while the transformer 56 is being suspended by the auxiliary boom 54, then the auxiliary boom 3 is also subject-ed to a large torsional moment T due to the above weights.
As a result, a very high contact pressure is applied to a boom receiver C of the boom 51.
The mobile vehicular apparatus 50 is usually used to process or service "hot" or energized electric cables.
Therefore, a distal boom member 51a of the boom 51 is normal-ly made o~ FRP (Fiber Reinforced Plastis) which is a highly electrically insulating material. Because the FRP material selected for the distal boom member 51a has to be highly mechanically strong to withstand the contact pressure applied thereto, the boom 50 is expensive and requires careful main-tenance.
FIG. 8 shows the manner in which aerial electric cables W1 through W3, corresponding to first, second, and third phases, are installed on a post using the mobile vehicular apparatus 50. For such installation, the mobile vehicular apparatus 50 is positioned as closely to the shoulder of the road as possible, the boom 51 is set to the best position, the control cabin 53 is turned and swung, and the manipulator de~ice 55 or the auxiliary boom 54 is operated. The control cabin 53, the auxiliary boom 54, and the manipulator device 55 of the conventional design are swingable in only a limited range about the vertical cabin support shaft 52. Therefore, 20~0202 when the control cabin 53 is held in the solid-line position in FIG. ~ and the manipulator device 55 is actuated to in-stall the aerial electric cables Wl through W3, the manipula-tor device 55 often can install only first- and second-phase cables W1, W2 even if it is moved most forwardly toward the cables Wl through W3. In order to install the third-phase cable W3 that is located farthest from the manipulator device 50, the position of the mobile vehicular apparatus 50 should be changed and the boom 51 should be raised and lowered, extended and contracted, and turned once more until the control cabin 53 is moved into the position indicated by the imaginary lines in FIG. 8.
When the mobile vehicular apparatus 50 is to be thus moved, the outriggers for supporting the mobile vehicle have to be retracted and the control cabin 53 have to be lowered into a safe low position. Even if the control cabin 53 can be moved to the imaginary-line position through the adjust-ment of the boom 51 while the mobile vehicular apparatus 50 remains unchanged in position, the operator in the control cabin 53 is required to manipulate a plurality of control levers in a complex sequence. Such a control procedure is highly tedious and time-consuming to perform and also ineffi-cient.
SUMMARY OF THE INVENTION
It is an ob;ect of the present invention to provide a mobile vehicular apparatus with an aerial working device and - 20~02Q2 an aerial control cabin which are arranged to minimize bend-ing and torsional moments that are applied thereby to a telescopic boom.
Another object of the present invention is to provide a mobile vehicular apparatus having an aerial manipulator device which can easily process or handle an object that is positioned remotely from an aerial control cabin supported on the tip end of a telescopic boom.
To achieve the above objects, there is provided a mobile vehicular apparatus comprising a boom, an aerial control cabin mounted on a tip end of the boom by a vertical shaft for turning movement about the vertical shaft, an aerial working device disposed in front of the aerial control cabin, and a slide mechanism for moving the aerial control cabin back and forth with respect to the boom.
The above and other objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings in which preferred embodiments o~ the present invention are shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a mobile vehicular apparatus with an aerial working device according to a first embodiment of the present invention;
FIG. 2 is a front elevational view of an aerial control cabin and associated components of the mobile vehicular apparatus shown in FIG. l;
FIG. 3 is a sectional front elevational view of the aerial control cabin;
FIG. 4 is a sectional side elevational view of the aerial control cabin;
FIG. 5 is a side elevational view of a mobile vehicular apparatus with an aerial working device according to a second embodiment of the present invention;
FIG. 6 is a side elevational view of an aerial control cabin and associated components of the mobile vehicular apparatus shown in FIG. 5;
FIG. 7 is a perspective view of a conventional mobile vehicular apparatus with an aerial working device; and FIG. 8 is a side elevational view of an aerial control cabin and associated components of the conventional mobile vehicular apparatus shown in FIG. 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a mobile vehicular apparatus with an aerial control cabin, incorporating an aerial working device accord-ing to the present invention.
The mobile vehicular apparatus includes a mobile vehicle 1 having a driver's cabin la and a vehicle body lb. The vehicle body lb supports a turntable Z which can be turned by a turntable motor. On the turntable 2, there is mounted a telescopic boom 3 which is upwardly extensible and downwardly collapsible, i.e., vertically swingable, by a cylinder 4.
-The telescopic boom 3 comprises three boom members, i.e., a distal boom member 3c, an intermediate boom member 3b, and a proximal boom member 3a. The distal boom member 3c and the intermediate boom member 3b are slidably movable into and out of the proximal boom member 3a by a hydraulic cylinder dis-posed in the telescopic boom 3. An aerial control cabin 6 is mounted on a vertical cabin support shaft 5 through a slide mechanism 10 which is in turn mounted the tip end of the distal boom member 3c.
As shown in FIGS. 3 and 4, the slide mechanism 10 com-prises a guide base 11 mounted on the cabin support shaft 5 allowing horizontal turning movement about the axis of the cabin support shaft 5, a slider 12 slidably mounted on the guide base 11 through a plurality of rollers 13 interposed therebetween, the slider 12 being slidable back and forth with respect to the guide base 11, and a slide cylinder 14 operatively coupled between the guide base 11 and the slider 12 for slidingly moving the slider 12 back and forth with re-spect to the guide base 11. The control cabin 6 is mounted on the slider lZ. The cabin support shaft 5 is held verti-cally at all times irrespective of the angle through which boom 3 is tilted with respect to the vehicle body lb. There-fore, the control cabin 6 can turn horizontally about the cabin support shaft 5 and move horizontally back and forth with the slider 12.
An aerial working device comprises a manipulator device 20~02~`~
-8 coupled to a lower front end of the control cabin 6, and an auxiliary boom 7 extending forwardly from an upper rear end of the control cabin 6. The auxiliary boom 7 comprises a hanger device or crane for hanging an object 15 such as a transformer to be installed on a post. The control cabin 6 is movable in a spatial range that is a combination of the range in which the boom 3 can be raised and lowered, extended and contracted, and turned, the range in which the control cabin 6 can be turn and swing about the cabin support shaft 5, and the range in which the control cabin 6 supported on the slide mechanism 10 is movable back and forth.
Now, it is assumed that the boom 3 is tilted at a cer-tain angle as shown in FIG. 1, the control cabin 6 is turned 9o in either of opposite horizontal directions as shown in FIG. 2, and the manipulator device 8 or the auxiliary boom 7 is operated to hang the transformer 15. In such an applica-tion, the bending and torsional moments applied to the boom 3 should desirably be minimized from the standpoint of safety and mechanical strength of the boom 3. More specifically, since the mobile vehicular apparatus is often used to process hot or energized electric cables, the distal boom member 3c is usually made of electrically insulating FRP (Fiber Rein-forced Plastic). Therefore, moments exerted to the boom 3 should be reduced to a minimum in order to avoid any trouble which would otherwise be caused by the limited mechanical strength of the distal boom member 3c, particularly the -contact pressure developed between the distal boom member 3c and a boom receive 3d on the intermediate boom member 3b.
When the transformer 15 is to be suspended by the auxil-iary boom 7, the control cabin 6 is slid rearwardly with respect to the boom 3 by the slide mechanism 10 in order to minimize the distance A between the central axis O of the boom 3 and the center of gravity of the control cabin 6 and also the distance B between the central axis O of the boom 3 and the center of gravity of the tansformer 15, so that the bending moment M applied to the boom 3 will be reduced to a minimum. Therefore, the bending moment M imposed on the boom 3 is minimized, and the torsional moment T which is exerted to the boom 3 when it is turned about the cabin support shaft 5 are made much smaller than those applied to the boom of the conventional mobile vehicular apparatus. As a result, the pressure developed between the distal boom member 3c and the boom receiver 3d on the intermediate boom member 3b is also reduced. Consequently, the FRP material for the distal boom member 3c is not required to be particularly high in mechani-cal strength as is the case with the conventional distal boom member. The boom 3 is therefore lower in cost, but still safe enough, and the maintenance thereof is relatively easy to carry out.
A mobile vehicular apparatus with an aerial working device according to a second embodiment of the present inven-tion will now be described with reference to FIGS. 5 and 6.
2~0202 Those parts shown in FIGS. 5 and 6 which are identical to those shown in FIGS. 1 through 4 are denoted by identical reference numerals.
The mobile vehicular apparatus shown in FIG. 5 has a mobile vehicle 100 having a driver's cabin la and a vehicle body lb on which a telescopic boom 3 is mounted. An aerial control cabin 6 is mounted through a slide mechanism 20 on a cabin support shaft 5 which is vertically mounted on the tip end of the distal boom member 3c of the boom 3.
The slide mechanism 20, which is similar to the slide mechanism 10 according to the first embodiment, comprises a guide base 21 mounted on the cabin support shaft 5 for hori-zontal turning movement about the axis of the cabin support shaft 5, a slider 22 slidably mounted on the guide base 21 through a plurality of rollers 13 interposed therebetween, the slider 2Z being slidable back and forth with respect to the guide base 21, and a slide cylinder 24 operatively cou-pled between the guide base 21 and the slider 22 for sliding-ly moving the slider 22 back and forth with respect to the guide base 21. The control cabin 6 is supported on the slider 22.
An auxiliary boom 7 extends forwardly from an upper rear end of the control cabin 6. A manipulator device 8 is mount-ed on a support arm 25 which extends forwardly and is fixed to the guide base 21. When the slider 22 moves back and forth, therefore, the control cabin 6 and the auxiliary boom 20302~2 -7 move back and forth in unison with each other, but the manipulator device 8 remains in position.
With the mobile vehicular apparatus according to the second embodiment, the control cabin 6 and the auxiliary boom 7 are movable in a spatial range that is a combination of the range in which the boom 3 can be raised and lowered, extended and contracted, and turned, the range in which the control cabin 6 can be turn and swing about the cabin support shaft 5, and the range in which the control cabin 6 is movable back and forth by the slide mechanism 10 supporting the control cabin 6. When an object such a transformer is to be suspend-ed by the auxiliary boom 7, therefore, the control cabin 6 and the auxiliary boom 7 are positionally adjusted by the slide mechanism 20 in order to minimize moments exerted to the boom 3.
In the second embodiment, as described above, only the control cabin 6 and the auxiliary boom 7 slide back and forth with respect to the boom 3, but the manipulator 8 does not move back and forth with respect to the boom 3. Accordingly, the relative position of the control cabin 6 and the auxil-iary boom 3 with respect to the manipulator device 8 can be adjusted back and forth. To install first-and second-phase electric wires Wl, W2 on a post as shown in FIG. 6, the mobile vehicular apparatus is positioned as closely to the shoulder of the road as possible, the boom 3 is set to the best position, and the control cabin 6, the manipulator device 8, and the auxiliary boom 7 are turned and swung, and operated for the installation of the electric wires Wl, W2.
To install a third-phase electric cable W3 which is located farthest from the control cabin 6, the slide cylinder 24 of the slide mechanism 20 is supplied with working oil to move only the control cabin 6 and the auxiliary boom 7 rearwardly with respect to the boom 3, thus widening the relative dis-tance between the control cabin 6 and the manipulator device 8. The control cabin 6 is now positioned clear of the first-phase electric cable Wl that is closest to the control cabin 6. Then, the boom 3 is moved to the two-dot-and-dash-line position to bring the control cabin 6 closer to the first-phase electric cable W1. Therefore, grippers on the distal ends of manipulators of the manipulator device 8 are now positioned closely to the third-phase electric cable W3 which is remotest from the control cabin 6. The manipulator device 8 is then controlled to install the electric cable W3 on the post.
With the mobile vehicular apparatus according to the second embodiment, the control cabin 6 supported on the boom 3 through the slide mechanism 20 is slid back and forth by the cylinder 24 to increase the relative distance between the control cabin 6 and the manipulator device 8, allowing the manipulator device 8 to install the electric cable W3 which is farthest from the control cabin 6. The position in which the mobile vehicular apparatus is held is not required to be 20~202 _ changed, and the boom 3 is also not required to be extended and contracted and turned for the processing or handling of the remotest electric cable W3. Since the control cabin 6 is easy to operate for complex jobs or tasks, the mobile vehicu-lar apparatus is efficient in operation.
Although certain preferred embodiments have been shown and described, it should be understood that many changes and modifications may be made therein without departing from the scope of the appended claims.
BACKGROUND OF THE INVENTION
The present invention relates to a mobile vehicular apparatus which has a telescopic boom supporting on its tip end an aerial cabin or platform for carrying an operator, a manipulator device, and a working device such as a crane.
FIG. 7 of the accompanying drawings shows a conventional mobile vehicular apparatus, generally denoted at 50, which is arranged to perform various aerial jobs or tasks. The mobile vehicular apparatus 50 has a telescopic boom 51 with a cabin support shaft 52 vertically mounted on its tip end. The cabin support shaft 52 supports thereon an aerial control cabin 53 which can turn and swing with respect to the boom 51. The aerial control cabin 53 supports a manipulator device 55 forwardly of the cabin support shaft 52 and an auxiliary boom 54 upwardly of the cabin support shaft 62.
The control cabin 53 is movable in a spatial range that is a combination of the range in which the boom 51 can be raised and lowered, extended and contracted, and turned, and the range in which the control cabin 53 can be turn and swing about the cabin support shaft 52.
When the boom 51 is fixed in the position shown in FIG.
7 and a transformer 56 is suspended by the auxiliary boom 54, the auxiliary boom 54 is subjected to a considerable bending moment M because of the weight o~ the control cabin 53 and 2~30202 the weight of the transformer 56. If the control cabin 53 is turned while the transformer 56 is being suspended by the auxiliary boom 54, then the auxiliary boom 3 is also subject-ed to a large torsional moment T due to the above weights.
As a result, a very high contact pressure is applied to a boom receiver C of the boom 51.
The mobile vehicular apparatus 50 is usually used to process or service "hot" or energized electric cables.
Therefore, a distal boom member 51a of the boom 51 is normal-ly made o~ FRP (Fiber Reinforced Plastis) which is a highly electrically insulating material. Because the FRP material selected for the distal boom member 51a has to be highly mechanically strong to withstand the contact pressure applied thereto, the boom 50 is expensive and requires careful main-tenance.
FIG. 8 shows the manner in which aerial electric cables W1 through W3, corresponding to first, second, and third phases, are installed on a post using the mobile vehicular apparatus 50. For such installation, the mobile vehicular apparatus 50 is positioned as closely to the shoulder of the road as possible, the boom 51 is set to the best position, the control cabin 53 is turned and swung, and the manipulator de~ice 55 or the auxiliary boom 54 is operated. The control cabin 53, the auxiliary boom 54, and the manipulator device 55 of the conventional design are swingable in only a limited range about the vertical cabin support shaft 52. Therefore, 20~0202 when the control cabin 53 is held in the solid-line position in FIG. ~ and the manipulator device 55 is actuated to in-stall the aerial electric cables Wl through W3, the manipula-tor device 55 often can install only first- and second-phase cables W1, W2 even if it is moved most forwardly toward the cables Wl through W3. In order to install the third-phase cable W3 that is located farthest from the manipulator device 50, the position of the mobile vehicular apparatus 50 should be changed and the boom 51 should be raised and lowered, extended and contracted, and turned once more until the control cabin 53 is moved into the position indicated by the imaginary lines in FIG. 8.
When the mobile vehicular apparatus 50 is to be thus moved, the outriggers for supporting the mobile vehicle have to be retracted and the control cabin 53 have to be lowered into a safe low position. Even if the control cabin 53 can be moved to the imaginary-line position through the adjust-ment of the boom 51 while the mobile vehicular apparatus 50 remains unchanged in position, the operator in the control cabin 53 is required to manipulate a plurality of control levers in a complex sequence. Such a control procedure is highly tedious and time-consuming to perform and also ineffi-cient.
SUMMARY OF THE INVENTION
It is an ob;ect of the present invention to provide a mobile vehicular apparatus with an aerial working device and - 20~02Q2 an aerial control cabin which are arranged to minimize bend-ing and torsional moments that are applied thereby to a telescopic boom.
Another object of the present invention is to provide a mobile vehicular apparatus having an aerial manipulator device which can easily process or handle an object that is positioned remotely from an aerial control cabin supported on the tip end of a telescopic boom.
To achieve the above objects, there is provided a mobile vehicular apparatus comprising a boom, an aerial control cabin mounted on a tip end of the boom by a vertical shaft for turning movement about the vertical shaft, an aerial working device disposed in front of the aerial control cabin, and a slide mechanism for moving the aerial control cabin back and forth with respect to the boom.
The above and other objects, features and advantages of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings in which preferred embodiments o~ the present invention are shown by way of illustrative example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a mobile vehicular apparatus with an aerial working device according to a first embodiment of the present invention;
FIG. 2 is a front elevational view of an aerial control cabin and associated components of the mobile vehicular apparatus shown in FIG. l;
FIG. 3 is a sectional front elevational view of the aerial control cabin;
FIG. 4 is a sectional side elevational view of the aerial control cabin;
FIG. 5 is a side elevational view of a mobile vehicular apparatus with an aerial working device according to a second embodiment of the present invention;
FIG. 6 is a side elevational view of an aerial control cabin and associated components of the mobile vehicular apparatus shown in FIG. 5;
FIG. 7 is a perspective view of a conventional mobile vehicular apparatus with an aerial working device; and FIG. 8 is a side elevational view of an aerial control cabin and associated components of the conventional mobile vehicular apparatus shown in FIG. 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a mobile vehicular apparatus with an aerial control cabin, incorporating an aerial working device accord-ing to the present invention.
The mobile vehicular apparatus includes a mobile vehicle 1 having a driver's cabin la and a vehicle body lb. The vehicle body lb supports a turntable Z which can be turned by a turntable motor. On the turntable 2, there is mounted a telescopic boom 3 which is upwardly extensible and downwardly collapsible, i.e., vertically swingable, by a cylinder 4.
-The telescopic boom 3 comprises three boom members, i.e., a distal boom member 3c, an intermediate boom member 3b, and a proximal boom member 3a. The distal boom member 3c and the intermediate boom member 3b are slidably movable into and out of the proximal boom member 3a by a hydraulic cylinder dis-posed in the telescopic boom 3. An aerial control cabin 6 is mounted on a vertical cabin support shaft 5 through a slide mechanism 10 which is in turn mounted the tip end of the distal boom member 3c.
As shown in FIGS. 3 and 4, the slide mechanism 10 com-prises a guide base 11 mounted on the cabin support shaft 5 allowing horizontal turning movement about the axis of the cabin support shaft 5, a slider 12 slidably mounted on the guide base 11 through a plurality of rollers 13 interposed therebetween, the slider 12 being slidable back and forth with respect to the guide base 11, and a slide cylinder 14 operatively coupled between the guide base 11 and the slider 12 for slidingly moving the slider 12 back and forth with re-spect to the guide base 11. The control cabin 6 is mounted on the slider lZ. The cabin support shaft 5 is held verti-cally at all times irrespective of the angle through which boom 3 is tilted with respect to the vehicle body lb. There-fore, the control cabin 6 can turn horizontally about the cabin support shaft 5 and move horizontally back and forth with the slider 12.
An aerial working device comprises a manipulator device 20~02~`~
-8 coupled to a lower front end of the control cabin 6, and an auxiliary boom 7 extending forwardly from an upper rear end of the control cabin 6. The auxiliary boom 7 comprises a hanger device or crane for hanging an object 15 such as a transformer to be installed on a post. The control cabin 6 is movable in a spatial range that is a combination of the range in which the boom 3 can be raised and lowered, extended and contracted, and turned, the range in which the control cabin 6 can be turn and swing about the cabin support shaft 5, and the range in which the control cabin 6 supported on the slide mechanism 10 is movable back and forth.
Now, it is assumed that the boom 3 is tilted at a cer-tain angle as shown in FIG. 1, the control cabin 6 is turned 9o in either of opposite horizontal directions as shown in FIG. 2, and the manipulator device 8 or the auxiliary boom 7 is operated to hang the transformer 15. In such an applica-tion, the bending and torsional moments applied to the boom 3 should desirably be minimized from the standpoint of safety and mechanical strength of the boom 3. More specifically, since the mobile vehicular apparatus is often used to process hot or energized electric cables, the distal boom member 3c is usually made of electrically insulating FRP (Fiber Rein-forced Plastic). Therefore, moments exerted to the boom 3 should be reduced to a minimum in order to avoid any trouble which would otherwise be caused by the limited mechanical strength of the distal boom member 3c, particularly the -contact pressure developed between the distal boom member 3c and a boom receive 3d on the intermediate boom member 3b.
When the transformer 15 is to be suspended by the auxil-iary boom 7, the control cabin 6 is slid rearwardly with respect to the boom 3 by the slide mechanism 10 in order to minimize the distance A between the central axis O of the boom 3 and the center of gravity of the control cabin 6 and also the distance B between the central axis O of the boom 3 and the center of gravity of the tansformer 15, so that the bending moment M applied to the boom 3 will be reduced to a minimum. Therefore, the bending moment M imposed on the boom 3 is minimized, and the torsional moment T which is exerted to the boom 3 when it is turned about the cabin support shaft 5 are made much smaller than those applied to the boom of the conventional mobile vehicular apparatus. As a result, the pressure developed between the distal boom member 3c and the boom receiver 3d on the intermediate boom member 3b is also reduced. Consequently, the FRP material for the distal boom member 3c is not required to be particularly high in mechani-cal strength as is the case with the conventional distal boom member. The boom 3 is therefore lower in cost, but still safe enough, and the maintenance thereof is relatively easy to carry out.
A mobile vehicular apparatus with an aerial working device according to a second embodiment of the present inven-tion will now be described with reference to FIGS. 5 and 6.
2~0202 Those parts shown in FIGS. 5 and 6 which are identical to those shown in FIGS. 1 through 4 are denoted by identical reference numerals.
The mobile vehicular apparatus shown in FIG. 5 has a mobile vehicle 100 having a driver's cabin la and a vehicle body lb on which a telescopic boom 3 is mounted. An aerial control cabin 6 is mounted through a slide mechanism 20 on a cabin support shaft 5 which is vertically mounted on the tip end of the distal boom member 3c of the boom 3.
The slide mechanism 20, which is similar to the slide mechanism 10 according to the first embodiment, comprises a guide base 21 mounted on the cabin support shaft 5 for hori-zontal turning movement about the axis of the cabin support shaft 5, a slider 22 slidably mounted on the guide base 21 through a plurality of rollers 13 interposed therebetween, the slider 2Z being slidable back and forth with respect to the guide base 21, and a slide cylinder 24 operatively cou-pled between the guide base 21 and the slider 22 for sliding-ly moving the slider 22 back and forth with respect to the guide base 21. The control cabin 6 is supported on the slider 22.
An auxiliary boom 7 extends forwardly from an upper rear end of the control cabin 6. A manipulator device 8 is mount-ed on a support arm 25 which extends forwardly and is fixed to the guide base 21. When the slider 22 moves back and forth, therefore, the control cabin 6 and the auxiliary boom 20302~2 -7 move back and forth in unison with each other, but the manipulator device 8 remains in position.
With the mobile vehicular apparatus according to the second embodiment, the control cabin 6 and the auxiliary boom 7 are movable in a spatial range that is a combination of the range in which the boom 3 can be raised and lowered, extended and contracted, and turned, the range in which the control cabin 6 can be turn and swing about the cabin support shaft 5, and the range in which the control cabin 6 is movable back and forth by the slide mechanism 10 supporting the control cabin 6. When an object such a transformer is to be suspend-ed by the auxiliary boom 7, therefore, the control cabin 6 and the auxiliary boom 7 are positionally adjusted by the slide mechanism 20 in order to minimize moments exerted to the boom 3.
In the second embodiment, as described above, only the control cabin 6 and the auxiliary boom 7 slide back and forth with respect to the boom 3, but the manipulator 8 does not move back and forth with respect to the boom 3. Accordingly, the relative position of the control cabin 6 and the auxil-iary boom 3 with respect to the manipulator device 8 can be adjusted back and forth. To install first-and second-phase electric wires Wl, W2 on a post as shown in FIG. 6, the mobile vehicular apparatus is positioned as closely to the shoulder of the road as possible, the boom 3 is set to the best position, and the control cabin 6, the manipulator device 8, and the auxiliary boom 7 are turned and swung, and operated for the installation of the electric wires Wl, W2.
To install a third-phase electric cable W3 which is located farthest from the control cabin 6, the slide cylinder 24 of the slide mechanism 20 is supplied with working oil to move only the control cabin 6 and the auxiliary boom 7 rearwardly with respect to the boom 3, thus widening the relative dis-tance between the control cabin 6 and the manipulator device 8. The control cabin 6 is now positioned clear of the first-phase electric cable Wl that is closest to the control cabin 6. Then, the boom 3 is moved to the two-dot-and-dash-line position to bring the control cabin 6 closer to the first-phase electric cable W1. Therefore, grippers on the distal ends of manipulators of the manipulator device 8 are now positioned closely to the third-phase electric cable W3 which is remotest from the control cabin 6. The manipulator device 8 is then controlled to install the electric cable W3 on the post.
With the mobile vehicular apparatus according to the second embodiment, the control cabin 6 supported on the boom 3 through the slide mechanism 20 is slid back and forth by the cylinder 24 to increase the relative distance between the control cabin 6 and the manipulator device 8, allowing the manipulator device 8 to install the electric cable W3 which is farthest from the control cabin 6. The position in which the mobile vehicular apparatus is held is not required to be 20~202 _ changed, and the boom 3 is also not required to be extended and contracted and turned for the processing or handling of the remotest electric cable W3. Since the control cabin 6 is easy to operate for complex jobs or tasks, the mobile vehicu-lar apparatus is efficient in operation.
Although certain preferred embodiments have been shown and described, it should be understood that many changes and modifications may be made therein without departing from the scope of the appended claims.
Claims (5)
1. A mobile vehicular apparatus comprising:
a boom;
an aerial control cabin mounted on a tip end of said boom by a vertical shaft for turning movement about the vertical shaft;
an aerial working device disposed in front of said aerial control cabin; and a slide mechanism which interconnects said vertical shaft and said cabin for moving said aerial control cabin back and forth horizontally with respect to said boom;
wherein said slide mechanism moves horizontally at all times and comprises a guide base mounted on said vertical shaft for turning movement thereabout, a slider mounted on said guide base so as to be movable back and forth with respect to said guide base, and actuator means for sliding said slider with respect to said guide base, said aerial control cabin being disposed on said slider.
a boom;
an aerial control cabin mounted on a tip end of said boom by a vertical shaft for turning movement about the vertical shaft;
an aerial working device disposed in front of said aerial control cabin; and a slide mechanism which interconnects said vertical shaft and said cabin for moving said aerial control cabin back and forth horizontally with respect to said boom;
wherein said slide mechanism moves horizontally at all times and comprises a guide base mounted on said vertical shaft for turning movement thereabout, a slider mounted on said guide base so as to be movable back and forth with respect to said guide base, and actuator means for sliding said slider with respect to said guide base, said aerial control cabin being disposed on said slider.
2. A mobile vehicular apparatus according to claim 1, wherein said aerial working device comprises a manipulator device, said manipulator device being connected to a front end of said guide base.
3. A mobile vehicular apparatus according to claim 1, wherein said aerial working device comprises a manipulator device and an auxiliary boom having a hanger device, said manipulator device being connected to a front end of said guide base, said auxiliary boom being supported on said aerial control cabin.
4. A mobile vehicular apparatus according to claim 1, 2 or 3, wherein said actuator means comprises a hydraulic cylinder.
5. A mobile vehicular apparatus according to claim 1, 2 or 3, wherein said boom is vertically swingable about a bottom pivot connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2030202 CA2030202C (en) | 1990-11-16 | 1990-11-16 | Mobile vehicular apparatus with aerial working device |
| US07/935,458 US5286159A (en) | 1990-11-08 | 1992-08-26 | Mobile vehicular apparatus with aerial working device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2030202 CA2030202C (en) | 1990-11-16 | 1990-11-16 | Mobile vehicular apparatus with aerial working device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2030202A1 CA2030202A1 (en) | 1992-05-17 |
| CA2030202C true CA2030202C (en) | 1995-10-24 |
Family
ID=4146460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2030202 Expired - Fee Related CA2030202C (en) | 1990-11-08 | 1990-11-16 | Mobile vehicular apparatus with aerial working device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2030202C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3851409A1 (en) * | 2020-01-16 | 2021-07-21 | Xtreme Manufacturing, LLC | Telehandler boom auxiliary control panel |
| US11919756B2 (en) | 2020-02-04 | 2024-03-05 | Xtreme Manufacturing, Llc | Aerial work vehicle boom auxiliary control panel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6405114B1 (en) | 1999-02-04 | 2002-06-11 | Snorkel International, Inc. | Aerial work platform boom having ground and platform controls linked by a controller area network |
| CN112894782A (en) * | 2021-02-23 | 2021-06-04 | 中铁工程装备集团有限公司 | Snakelike arm connecting structure and snakelike arm robot controlled by series-parallel connection coupling |
-
1990
- 1990-11-16 CA CA 2030202 patent/CA2030202C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3851409A1 (en) * | 2020-01-16 | 2021-07-21 | Xtreme Manufacturing, LLC | Telehandler boom auxiliary control panel |
| US11919756B2 (en) | 2020-02-04 | 2024-03-05 | Xtreme Manufacturing, Llc | Aerial work vehicle boom auxiliary control panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2030202A1 (en) | 1992-05-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |