JP6580978B2 - Work tool helper - Google Patents

Description

  The present invention relates to a helper for adjusting the position of a working tool. In particular, working tools such as sticks, yatcos, etc. used to perform live line cutting work, skinning work, etc., can be fixed at a predetermined work location, for example, a predetermined position of a bucket of an aerial work vehicle, and The present invention relates to a helper that can move a work tool in the vertical direction and the horizontal direction by an operation with a foot.

  Since the hot line work involves danger, it is preferable to perform the work by temporarily turning off the energization. However, the harmful effect caused by temporarily turning off the energization is great. For this reason, work tools such as bar-shaped sticks and Yatsuko, which are made of an insulating material at least by the hand of the operator, are used.

  When using a work tool such as the above, for example, when stripping a live wire covering part, two workers get on the bucket of an aerial work vehicle, and one of them is held at the tip. Hold the work tool with the tool and hold and fix the peeled part so that the live line does not move. Then, another worker takes a work tool having a work tool with a peeling tool attached to the tip, and peels off the covered portion while remotely operating the work tool.

  The work method as described above requires two workers for the construction at one place. Therefore, in order to allow a single worker to perform hot-line work, a rail part that is mounted substantially horizontally is provided on the peripheral wall part that constitutes the bucket, and a support column part that can extend and contract the work tool vertically is provided. There is known an indirect live tool support (helper) in which the slider portion is provided so as to be movable and positioned and fixed along the rail portion (see Patent Document 1).

Japanese Patent No. 5306031

  By the way, women have also entered the field of indirect hotline construction. However, since the helper described in Patent Document 1 is manual, there is a problem that a heavy load is required to move the heavy slider portion and to extend and contract the working tool in the vertical direction.

  Moreover, when working using the helper described in Patent Document 1, the position of the working tool may be changed during the work. However, the worker himself / herself also holds the work tool by hand and performs the indirect hot line work. Therefore, it is necessary to operate the helper during the operation with one hand, and there is a problem that the burden on the operator is heavy.

  Furthermore, recent indirect hot-line work is required to be efficient, that is, the worker is required to work alone and in a short time. However, when operating the helper during work with one hand, in order to place the work tool attached to the helper at a desired position, the slider part is moved and the work tool is expanded and contracted simultaneously with one hand. You can't do that, so you need to operate it separately. In that case, first, loosen and move the screw of the slider part with one hand, and then tighten the screw to fix the slider part. It is necessary to tighten and fix. Therefore, there is a problem that it takes time to move the work tool and it is difficult to work efficiently.

  The present invention has been made to solve the above-mentioned problems, and as a result of extensive research, (1) a moving part that is movable in a horizontal direction with respect to a bucket and a vertical movement with respect to the moving part. Freely formed support pillars, moving parts and drive parts that drive the support pillars are provided, and the drive parts are operated by foot switches, so that the work tools can be placed at desired positions without using the operator's hands. (2) When the foot switch layout is devised, move the work tool diagonally by moving the work tool only in the horizontal direction, moving only in the vertical direction, and simultaneously moving in the horizontal and vertical directions. (3) When at least one foot switch is provided at a position away from the floor of the bucket so that it can be operated by kicking it up with the foot, the malfunction will be reduced, (4) Driving Case in which the stop button for stopping the driving, it is possible to stop the drive be operated by mistake the foot switch, be enhanced safety, newly discovered.

  That is, an object of the present invention is to provide a helper with improved workability by providing a drive unit for moving a work tool and operating the drive unit with a foot.

  The present invention relates to the following helper.

(1) A work tool helper attached to a bucket of an aerial work vehicle,
A moving part movable in a horizontal direction with respect to the bucket,
A support column formed to be vertically stretchable with respect to the moving part;
A clamp that is provided on the upper end side of the support column and detachably supports the work tool;
A horizontal driving unit for moving the moving unit in a horizontal direction;
A vertical driving unit for extending and contracting the support column in the vertical direction; and
A foot switch for driving the horizontal driving unit and the vertical driving unit;
Helper including at least.
(2) The foot switch is provided on a floor surface of a bucket, and the foot switch includes a horizontal right moving switch and a horizontal left moving switch for moving the moving unit in a horizontal direction, and the support column. Including four switches, a switch for ascending movement and a switch for descending movement for expanding and contracting,
The helper according to (1), wherein at least one of the four switches is provided at a position away from the floor surface of the bucket and is operated by kicking up with a foot.
(3) The helper according to (1), wherein the foot switch is a multidirectional tilt switch.
(4) The helper according to any one of (1) to (3), including a stop button for stopping driving of the horizontal driving unit and the vertical driving unit by the foot switch.
(5) The helper according to any one of (1) to (4), including a guide portion that is mounted substantially horizontally on the peripheral wall portion of the bucket and guides the movement of the moving portion in the horizontal movement direction. .
(6) The above-described (1) to (5), including a rotation portion that is provided between the support column and the clamp and is configured to be able to rotate and position and fix the clamp with respect to the support column. Helper as described in any one.

Since the helper of the present invention can move the work tool to a desired place by an operation with a foot, the operator does not need to use a hand. Therefore, even if the worker is a woman or one person, efficient work is possible.
Moreover, the helper of this invention can move to the diagonal direction in addition to the working tool in the left-right and up-down directions, when arrangement | positioning of a foot switch is devised. Therefore, the time required for moving the work tool can be shortened, and work efficiency is improved.
Furthermore, when the helper according to the present invention is disposed at a position where the foot switch is operated by kicking up with the foot, malfunctions are reduced.
In addition, when a stop button for stopping the drive of the drive unit is provided, the drive can be stopped even if the foot switch is operated by mistake. Therefore, the operator does not need to perform an operation while looking at his / her feet, and can concentrate on the work, so that safety and work efficiency can be improved.

FIGS. 1A and 1B are diagrams for explaining an example of an embodiment of the helper 1 of the present invention. 2A and 2B are diagrams for explaining the operation of the clamp 4 and the rotating unit 10. FIG. 3 is a view of the helper 1 shown in FIG. 1A as viewed from the opposite side, and is a view for explaining an example of the moving unit 2. FIG. 4 is a diagram for explaining an example of the vertical direction driving unit 6. FIGS. 5A and 5B are diagrams for explaining another embodiment of the horizontal driving unit 5 and the vertical driving unit 6. FIG. 6 is a diagram for explaining another embodiment of the horizontal driving unit 5 and the vertical driving unit 6. FIGS. 7A and 7B are diagrams for explaining an example of the foot switch 7. FIG. 8 is a view for explaining another embodiment of the foot switch. FIG. 8 (1) is a top view of the foot switch 110, FIG. 8 (2) is a side view, and FIG. 8 (3) is an operation. It is a figure explaining. FIGS. 9A and 9B are diagrams for explaining another embodiment of the helper 1 of the present invention.

  Below, the helper of this invention is demonstrated in detail, using drawing.

  FIGS. 1A and 1B are diagrams for explaining an example of an embodiment of the helper 1 of the present invention. A helper 1 according to the present invention includes a moving part 2 that is movable in a horizontal direction with respect to a bucket, a support column 3 that is formed to be vertically extendable with respect to the moving part 2, and a clamp that removably supports a work tool. 4. Drives a horizontal driving unit 5 for moving the moving unit 2 in the horizontal direction, a vertical driving unit 6 for expanding and contracting the support column 3 in the vertical direction, a horizontal driving unit 5 and a vertical driving unit 6. The foot switch 7 is included at least. The horizontal drive unit 5 includes at least a horizontal movement motor unit 51 and a drive shaft 52. The vertical drive unit 6 includes at least a vertical movement motor unit 61 and a vertical drive shaft (not shown). In the embodiment shown in FIGS. 1A and 1B, the power supply unit 8 for supplying electricity to the horizontal driving unit 5 and the vertical driving unit 6, and the mounting unit for mounting the helper 1 on a bucket or the like. 9. A rotation unit 10, a horizontal driving unit 5 and a vertical driving unit 6 which are provided between the support column 3 and the clamp 4 and are configured to be capable of rotating and positioning and fixing the clamp 4 with respect to the support column 3. A stop button 11 for stopping driving is included.

  In the embodiment shown in FIGS. 1A and 1B, the moving unit 2 connects the upper and lower portions of the two cylindrical bodies 21 into which the support column 3 can be inserted and retracted by connecting the connecting units 22. It is composed. In addition, if the moving part 2 is a structure which can be moved to a horizontal direction when the helper 1 is attached to a bucket etc., there will be no restriction | limiting in particular. For example, in the embodiment shown in FIGS. 1 (1) and (2), the support column 3 is a cylinder. Therefore, an example in which two cylindrical bodies 21 are provided in order to prevent the support column 3 from rotating in the cylinder 21 and the clamp 4 at the upper end from rotating, and to stabilize the expansion and contraction operation of the support column 3. However, the cylindrical body 21 may be made into one by making the inner surface of the cylindrical body 21 and the support column 3 into a non-rotatable shape such as a polygon or an ellipse. Moreover, when the moving part 2 is formed by the cylindrical body 21, the cylindrical body 21 can be attached to a plate-like member or the like because the number of parts can be reduced and the weight can be reduced because it can also be used as the expansion and contraction mechanism of the support pillar 3.

  1 includes a disk-shaped pressing member 91, a screw shaft 92 having one end connected to the disk-shaped pressing member 91, a rotation operation lever 93 connected to the other end of the screw shaft 92, and a screw shaft. A substantially U-shaped fixing frame 94 that is inserted through 92 is included. The bucket may be fixed by inserting the bucket into the opening portion of the substantially U-shaped fixing frame 94, rotating the rotation operation lever 93, and pressing the disk-shaped pressing member 91 against the bucket.

  A clamp 4 for detachably supporting the work tool is provided at the upper end portion of the support column 3 via a rotation unit 10 that can be rotated and positioned and fixed with respect to the support column 3. . 2A and 2B are diagrams for explaining the operation of the clamp 4 and the rotating unit 10. First, the clamp 4 is not particularly limited as long as it can grip the working tool, but in the example shown in FIGS. 2 (1) and 2 (2), via the fixing member 41 and the two left and right guide rods 42, 42, And a movable member 43 that can move in parallel with respect to the fixed member 41. The guide rod 42 protrudes vertically downward from both longitudinal ends of the movable member 43 and is inserted and supported through a guide hole (not shown) of the fixed member 41. The guide rod 42 has the movable member 43 attached to the fixed member. A coil spring 44 is fitted to hold 41 at an appropriate interval to facilitate the insertion of the work tool. Further, on the opposing surfaces of the fixed member 41 and the movable member 43, a holding portion having a substantially V-shaped cross section (not shown) for holding the work tool is formed. In addition, a screw shaft 45 is erected at the center in the longitudinal direction of the fixed member 41. The screw shaft 45 is inserted into a hole (not shown) of the movable member 43, and a tightening member 46 is screwed into the tip thereof. Has been. A knob 47 for rotating operation is attached to the tightening member 46.

  When the clamp 4 is used, a working tool (not shown) is inserted between the holding portions of the fixed member 41 and the movable member 43, and the tightening member 46 screwed to the screw shaft 45 is used as a coil spring. By rotating in the tightening direction against the urging force of 44, the movable member 43 can approach the fixed member 41 side, and work tools having various diameters can be sandwiched and fixed between the both sandwiching portions.

  The rotating unit 10 is not particularly limited as long as the clamp 4 is rotatable and can be positioned and fixed with respect to the support column 3. In the example illustrated in FIG. 2, the rotation unit 10 includes a first rotation unit 12 that can rotate the clamp 4 and a second rotation unit 13 that can rotate the clamp 4 with respect to the support column 3. The first rotating portion 12 includes a plate portion 101 having a worm wheel formed at the tip, a frame body 102 on which the plate portion 101 is rotatably attached, a worm 103, a rotating shaft 104 for rotating the worm 103, and a rotating shaft. A handle 105 for rotating the rotary shaft 104 provided at one end of the shaft 104 and a rod-like portion 106 fixed to the frame body 102 are included. The other end of the plate portion 101 is fixed to the fixing member 41 with a screw 107. When the handle 105 is rotated, the worm 103 is also rotated. When the worm rotates the worm wheel, the clamp 4 can be rotated and fixed as shown in FIGS. 2 (1) → (2).

  The second turning portion 13 includes a turning frame 121 and a turning lever 122 that can be fixed to the support column 3 and in which a hole for inserting the rod-like portion 106 is formed. The turning lever 122 has a structure in which the rod-like portion 106 can be crimped / released by turning, and the rod-like portion 106 can be turned with respect to the support column 3 by operating the turning lever 122. Therefore, by using the first rotation unit 12 and the second rotation unit 13, a working tool (not shown) can be adjusted in an arbitrary direction.

  2 includes the first rotating unit 12 and the second rotating unit 13. For example, Patent Document 1, Japanese Patent No. 4334669, Japanese Patent No. 4279128, and the like. The rotating part 10 may be configured by a single rotating part by using the sphere described in the above.

  Examples of the working tool to be attached to the clamp 4 include working tools conventionally used for performing live wire cutting work, skinning work, etc., such as an insulating stick and a yatco.

  The horizontal direction drive part 5 will not be restrict | limited especially if the moving part 2 can be moved by motive power. FIG. 3 is a view of the helper 1 shown in FIG. 1 as viewed from the opposite side, and is a view for explaining an example of the moving unit 2. A horizontal movement motor unit 51 shown in FIG. 3 includes a motor (not shown) and a bevel gear 53 for transmitting the rotation of the motor to the drive shaft 52. The drive shaft 52 is formed with a screw. Moreover, the horizontal direction drive part 5 may include the guide part 54 for the stability at the time of the movement of the moving part 2. FIG. A substantially central portion of the guide portion 54 is fixed to the attachment portion 9. Further, both end portions of the drive shaft 52 are inserted into the end portion fixing frame 55 so as to be rotatable, and both end portions of the guide portion 54 are fixed to the end portion fixing frame 55. The moving portion 2 has a plate portion 58 to which a screwing portion 56 screwed with a screw of the drive shaft 52 and a locking portion 57 locked with the guide portion 54 are attached to the connecting portion 22 with screws. . With the above-described configuration, when a foot switch 7 described later is operated, the motor in the horizontal movement motor unit 51 rotates, and the rotation of the motor is transmitted to the drive shaft 52 to rotate, so that the drive shaft 52 It is possible to move the moving part 2 screwed into the horizontal direction.

  The vertical drive unit 6 is not particularly limited as long as the support column 3 can be expanded and contracted with respect to the moving unit 2 by power. FIG. 4 is a diagram for explaining an example of the vertical direction driving unit 6. The vertical movement motor unit 61 shown in FIG. 4 includes a motor (not shown) and a palm gear 63 for transmitting rotation of the motor to the vertical drive shaft 62. A screw is formed on the vertical drive shaft 62. A gear 63 is fixed to one end of the vertical drive shaft 62, and the other part is inserted into the cylindrical body 21. Then, the support column 3 is also inserted into the cylindrical body 21, and a screw hole is formed so that the inside of the support column 3 can be screwed with the vertical drive shaft 62, whereby the support column 3 is rotated by the rotation of the vertical drive shaft 62. The moving part 2 can be expanded and contracted in the vertical direction.

  FIGS. 5A and 5B are diagrams for explaining another embodiment of the horizontal driving unit 5 and the vertical driving unit 6. 5 (1) and 5 (2) has a rack 511 attached to an end fixing frame 55 in place of the drive shaft 52 in which a screw is formed. Further, a horizontal movement motor unit 51 is attached to the moving unit 2, and a pinion that engages with the rack is attached to the motor. The vertical driving unit 6 has a rack 31 formed on the surface of the support column 3 instead of forming a screw hole inside the support column 3. A pinion that engages with the rack 31 is attached to the motor in the vertical movement motor unit 61.

  FIG. 6 is a diagram for explaining another embodiment of the horizontal driving unit 5 and the vertical driving unit 6. The bucket of an aerial work vehicle is driven using hydraulic pressure. For this reason, a hydraulic motor may be used instead of the motor that is driven by electricity from the power supply unit 8 of the embodiment shown in FIGS. When a hydraulic motor is used, the electric motors of the horizontal movement motor unit 51 and the vertical movement motor unit 61 are replaced with hydraulic motors, and a hydraulic pipe 81 branched from an aerial work vehicle is converted into a hydraulic motor via a foot switch 7. What is necessary is just to make it connect. Other configurations may be the same as in the above embodiment.

  FIGS. 7A and 7B are diagrams for explaining an example of the foot switch 7. A foot switch 7 shown in FIG. 7 includes a substantially U-shaped box 71 for disposing on the floor surface 100 of the bucket, an ascending movement switch (first switch) 72 for extending and contracting the support pillar 3 and a descending movement. A switch (second switch) 73, a horizontal right movement switch (third switch) 74 and a horizontal left movement switch (fourth switch) 75 for moving the moving unit 2 in the horizontal direction are included. When the foot switch 7 is operated, the first switch 72 and the third switch 74 arranged on the upper side of the box 71 are kicked up by the foot 76, and the second switch 73 arranged on the lower side of the box 71 and The fourth switch 75 is operated by stepping on the foot 76. By setting the distance between the upper and lower switches so that they cannot be operated at the same time even when the foot 76 is inserted, the operator does not need to look at the feet of the contradictory operations such as raising and lowering or moving right and left. Can also be manipulated. In order to further improve safety, an interlock circuit for stopping the driving of the motor may be incorporated in the case where contradictory operations are performed.

  In addition, a partition plate 77 may be provided in the box 71 in order to reduce erroneous operations of the first switch 72 and the third switch 74, and the second switch 73 and the fourth switch 75. What is necessary is just to form the partition plate 77 in the vertical direction in the center part of the box 71 on the opposite side to the opening side which inserts a leg | foot. Since the tip of the foot 76 contacts the partition plate 77, it is possible to prevent an erroneous operation of the left and right switches. As described above, the switches are arranged one above the other and the partition plate 77 is provided as necessary, so that malfunctions can be considerably prevented. However, in order to increase safety, the horizontal drive unit 5 and the vertical drive unit 5 can be prevented. You may provide the stop button 11 which stops the drive of the direction drive part 6. FIG. If the stop button is pressed once, the circuit that sends electricity to the motors of the horizontal driving unit 5 and the vertical driving unit 6 is cut off or the hydraulic flow is cut off, and when pressed again, the circuit or the hydraulic flow is restored. Good. In FIG. 7, an example in which the stop button 11 is provided on the attachment portion 9 is shown, but it may be provided at another location.

  Further, the arrangement of the switches exemplified above is merely an example, and various changes may be made. For example, the first switch 72 and the third switch 74 may be moved up and down, and the second switch 73 and the fourth switch 75 may be moved left and right. In the embodiment shown in FIG. 7, two switches are arranged on the upper and lower sides, but one, three, or four switches may be arranged on the upper side. Conversely, one, three or four switches may be arranged on the lower side.

  The operation method described above shows an example in which each switch is operated with the foot 76, but the interval between the left and right switches may be an interval at which the foot 76 can be operated at once. For example, the first switch 72 is a switch for raising the support column 3 and the third switch 74 is a switch for moving left, and the switches 3 are simultaneously lifted to raise the support column 3 and move the moving unit 2 to the left simultaneously. The work tool gripped by the clamp 4 may be moved diagonally upward to the left. As described above, the use of the foot switch 7 makes it possible to quickly align the position only by the operation of the foot 76 without manually operating the work tool, so that the work efficiency is improved as compared with the conventional helper. . Moreover, even if the worker is a woman, the working tool can be moved without difficulty.

  FIG. 8 is a view for explaining another embodiment of the foot switch. FIG. 8 (1) is a top view of the foot switch 110, FIG. 8 (2) is a side view, and FIG. 8 (3) is an operation. It is a figure explaining. The foot switch 110 shown in FIG. 8 employs a multi-directional tilt type foot switch. Specifically, as shown in FIG. 8 (3), the foot plate 111 whose center portion is the thickest and becomes thinner toward the outside is placed on the substrate 112, and the thick center portion is on the bottom. Is arranged. Therefore, when the foot 76 is stepped on the position shifted from the center of the foot board 111, the foot board 111 can be tilted. As shown in FIG. 8 (1), a first switch 113, a second switch 114, a third switch 115, and a fourth switch 116 are formed on the substrate 112. Accordingly, the first switch 113 to the fourth switch 116 can be turned on and off by stepping on and tilting the foot board 111. Further, a right movement switch 117 and a left movement switch 118 are formed on the upper surface of the foot board 111, and the switch may be turned on and off by depressing with the foot 76.

  The foot switch 110 of the embodiment shown in FIG. 8 raises the support column 3 when the first switch 113 and the second switch 114 are stepped on simultaneously, for example, by stepping on the foot plate 111 shown in FIG. When the 3 switch 115 and the fourth switch 116 are stepped on simultaneously, the support column 3 is lowered, when the right movement switch 117 is stepped on, the moving part 2 is moved right, and when the left movement switch 118 is stepped on, the moving part 2 can be moved leftward. You can do it. Further, by stepping on the corner of the foot board 111, for example, when only the first switch 113 is depressed, the moving part 2 is moved to the right while the support column 3 is lifted to move the work tool diagonally upward to the right. When only the second switch 114 is depressed, the work tool is moved obliquely upward to the left, when only the third switch 115 is depressed, the work tool is moved obliquely downward to the right, and only the fourth switch 116 is depressed. The work tool may be moved diagonally downward to the left. Of course, the above is merely an example of each switch, and the objects controlled by each switch may be different. In the case of the embodiment shown in FIG. 8, the working tool can be reliably operated in the upper right and left directions, the upper right direction, the upper left direction, the lower right direction, and the lower left direction. As a result, the working tool can be quickly aligned, and the working efficiency is further improved.

  Even in the case of the embodiment shown in FIG. 8, an interlock circuit that stops the driving of the motor may be incorporated when the operator performs a conflicting operation. Further, a stop button 11 may be provided.

  9 (1) and 9 (2) are diagrams for explaining another embodiment of the present invention. In the embodiment shown in FIG. 1, the bucket is inserted into the opening portion of the substantially U-shaped fixed frame 94, the rotation operation lever 93 is rotated, and the disk-shaped pressing member 91 is pressed against the bucket. Is fixed to the bucket. On the other hand, in the embodiment shown in FIG. 9, the attachment portion 9 is attached so as to be movable with respect to the bucket. Specifically, a driving roller 96 that can be rotated by a motor 95 is disposed on the upper portion of the fixed frame 94, and the driving roller 96 is brought into contact with the upper end of the bucket. Then, instead of the disk-shaped pressing member 91, a pressing member 97 provided with a rotatable roller and a rotatable roller 98 formed on the fixed frame 94 opposed to the roller of the pressing member 97 are provided. The part 9 can be attached so as to be able to run on the bucket. In the case of the embodiment shown in FIG. 9, since the attachment portion 9 itself can self-propell, the horizontal driving portion 5 shown in FIG. 1 is unnecessary, and the moving portion 2 may be fixed to the attachment portion 9.

When the helper 1 of the present invention is used, work efficiency such as live line cutting work and skinning work is significantly improved. Furthermore, a bucket can be arrange | positioned in the position with few dangers of an electric shock, and the safety | security of hot-wire work can be improved.
Therefore, it is useful for a tool manufacturer and a construction manufacturer for live work.

DESCRIPTION OF SYMBOLS 1 ... Helper, 2 ... Moving part, 3 ... Support pillar, 4 ... Clamp, 5 ... Horizontal direction drive part, 6 ... Vertical direction drive part, 7 ... Foot switch, 8 ... Power supply part, 9 ... Mounting part, 10 ... Time Moving part, 11 ... Stop button, 12 ... First rotating part, 13 ... Second rotating part, 21 ... Cylindrical body, 22 ... Connecting part, 31 ... Rack, 41 ... Fixing member, 42 ... Guide rod, 43 ... Movable member, 44 ... coil spring, 45 ... screw shaft, 46 ... clamping member, 47 ... knob, 51 ... motor unit for horizontal movement, 52 ... drive shaft, 53 ... bevel gear, 54 ... guide part, 55 ... end fixed Frame, 56 ... screwing part, 57 ... locking part, 58 ... plate part, 61 ... motor unit for vertical movement, 62 ... vertical drive shaft, 63 ... palm gear, 71 ... box body, 72 ... first switch, 73 ... second switch, 74 ... third switch, 75 ... fourth switch, 76 ... foot, 7 DESCRIPTION OF SYMBOLS ... Partition plate, 81 ... Hydraulic pipe, 91 ... Disc-shaped pressing member, 92 ... Screw shaft, 93 ... Rotation operation lever, 94 ... Fixed frame, 95 ... Motor, 96 ... Roller, 97 ... Rollable roller Installed pressing member, 100 ... floor surface, 101 ... plate part, 102 ... frame, 103 ... worm, 104 ... rotating shaft, 105 ... handle, 106 ... rod-like part, 107 ... screw, 110 ... foot switch, 111 ... stepping Plate, 112 ... Substrate, 113 ... First switch, 114 ... Second switch, 115 ... Third switch, 116 ... Fourth switch, 117 ... Right movement switch, 118 ... Left movement switch, 121 ... Swing frame, 122 ... Swing Lever, 511 ... Rack

Claims (6)

A work tool helper attached to a bucket of an aerial work vehicle,
A moving part movable in a horizontal direction with respect to the bucket,
A support column formed to be vertically stretchable with respect to the moving part;
A clamp that is provided on the upper end side of the support column and detachably supports the work tool;
A horizontal driving unit for moving the moving unit in a horizontal direction;
A vertical driving unit for extending and contracting the support column in the vertical direction; and
A foot switch for driving the horizontal driving unit and the vertical driving unit;
Helper including at least. The foot switch is provided on the floor of the bucket, and the foot switch is a horizontal right moving switch and a horizontal left moving switch for moving the moving portion in the horizontal direction, and for extending and contracting the support column. 4 switches, a switch for moving up and down, and a switch for moving down,
The helper according to claim 1, wherein at least one of the four switches is provided at a position away from the floor of the bucket and is operated by kicking up with a foot.   The helper according to claim 1, wherein the foot switch is a multi-directional tilt switch.   The helper according to any one of claims 1 to 3, further comprising a stop button for stopping driving of the horizontal driving unit and the vertical driving unit by the foot switch.   The helper according to any one of claims 1 to 4, further comprising a guide portion that is mounted substantially horizontally on the peripheral wall portion of the bucket and guides the movement of the moving portion in the horizontal movement direction.   The rotation part provided between the said support pillar and the said clamp, and making the said clamp rotatable with respect to the said support pillar, and positioning fixation is possible, The rotation part as described in any one of Claims 1-5. Helper.