JP2001341997A - Vehicle for high lift work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure satisfactory safety and working efficiency of high lift work. SOLUTION: Various workbench operation means provided on a workbench and a hydraulic valve provided in an upper body are interlockedly connected to each other via an interlocking connection mechanism so that a hydraulic actuator for actuating a lower body to travel or a hydraulic actuator for actuating a boom to rotationally move up and down is operated via a hydraulic valve by the various workbench operating means, and various upper body operation means is interlockedly connected to the hydraulic valve so that the hydraulic actuator for actuating the lower body to travel or the hydraulic actuator for actuating the boom to rotationally move up and down is operated via the hydraulic valve by the various upper body operating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an aerial work vehicle.

[0002]

2. Description of the Related Art Conventionally, as one form of an aerial work vehicle, a lower body having a traveling function and an upper body provided on the lower body are provided, and a base end of a boom is attached to the upper body by a boom stay. The boom can be pivoted up and down (up and down) freely, and a work table is attached to the tip of the boom so that it can swing up and down.

[0003] While the operating table is provided with various operating means, a hydraulic valve is provided on the upper body, and the operating means and the hydraulic valve are operatively connected via an interlocking connection mechanism. A hydraulic actuator that moves the lower body through a hydraulic valve and a hydraulic actuator that rotates the boom up and down can be operated.

[0004] In this way, the operator can steer the lower body or move the work table up and down by operating the various operation means while riding on the work table. I have to.

[0005]

However, in the aerial work vehicle described above, when the interlocking coupling mechanism fails to perform the interlocking function due to a failure or the like while the workbench is raised,
There is a problem that the workbench cannot be lowered urgently.

[0006]

Accordingly, the present invention comprises a lower body having a traveling function and an upper body provided on the lower body, and a base end of a boom is provided on the upper body with a boom stay. The boom can be pivoted up and down freely, and a workbench is attached to the end of the boom. The operation of the lower body and the boom up and down operation can be performed on the workbench. In an aerial work vehicle that can be operated, various operation means on the work table provided on the work table and a hydraulic valve provided on the upper body are interlocked and connected via an interlocking connection mechanism, and various operation means on the work table side are used. Hydraulic actuators that move the lower body through the hydraulic valves and hydraulic actuators that rotate the boom up and down are operable, and various operating means on the upper body side are linked to the hydraulic valves to operate various operating means on the upper body side. By hydraulic valve There is provided a Aerial characterized in that the possible operating operating the hydraulic actuator for a hydraulic actuator or a boom for running the lower body up and down swinging motion by.

[0007] The present invention is also characterized by the following configuration.

[0008] A spool actuating link mechanism is interlocked between a spool provided on the hydraulic valve and a distal end side of an interlocking coupling mechanism having a base end connected to various operation means on the workbench side. A part of the operating link mechanism is extended to form various upper body side operation means.

A recess is formed in the side wall of the bonnet covering the hydraulic valve, and the tip operating portions of various operating means on the upper body side are arranged in the recess.

[0010]

Embodiments of the present invention will be described below.

That is, the aerial work vehicle according to the present invention comprises, as a basic structure, a lower body having a traveling function and an upper body provided on the lower body, and the base end of the boom is provided on the upper body. The part is pivoted through a boom stay, and the boom can be turned up and down freely.A workbench is attached to the tip of the boom, and the lower body can be operated and the boom can be moved up and down on the workbench. A rotation operation can be performed.

As a characteristic structure, various operation means on the work table provided on the work table and a hydraulic valve provided on the upper body are interlockingly connected via an interlocking connection mechanism. Hydraulic actuators that move the lower body through the hydraulic valves and hydraulic actuators that rotate the boom up and down can be operated, and various operating means on the upper body side are linked to the hydraulic valves to operate the various operating means on the upper body side. It is also possible to operate a hydraulic actuator that moves the lower body through a hydraulic valve or a hydraulic actuator that rotates the boom up and down.

More specifically, the upper body-side various operation means is provided between a spool provided on the hydraulic valve and a distal end side of an interlocking connection mechanism having a base end connected to the worktable-side various operation means. The mechanism is linked and connected, and a part of the spool operating link mechanism is extended.

Moreover, the distal end operating portions of the various upper body-side operating means are disposed in recesses formed in the side wall of the bonnet covering the hydraulic valve.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an aerial work vehicle according to the present invention. The aerial work vehicle A includes a lower body 1 having a traveling function and an upper part provided on the lower body 1. Body 2
By pivotally supporting the base end of the boom 3 on the upper body 2,
Is vertically rotatable, and a work table 4 is attached to the end of the boom 3 so as to be swingable up and down.

The lower body 1 is constructed by mounting a base 11 between a pair of right and left crawler-type traveling parts 10, 10.
Attached a driven wheel 13 to the front end of the traveling frame 12 extending in the front-rear direction, and attached a driving wheel 14 to the rear end of the traveling frame 12 to wind the crawler belt 15 between the two driven wheels 13, 14. A plurality of rolling wheels 16 are attached to the lower edge of the traveling frame 12 at intervals in the front-rear direction.

A hydraulic motor (not shown) as a hydraulic actuator is attached to each of the drive wheels 14, 14,
Each drive wheel 14, 14 is driven by each hydraulic motor, so that each of the traveling portions 10, 10 can be operated to travel.

The upper body 2 is turned on a base 11 of the lower body 1.
20 can be turned freely, and the electric motor 21 for turning
The hydraulic control unit 22 and the fuel tank 23 are disposed on the left side of the revolving base 20 adjacent to each other in the front-rear direction, and are covered with the left bonnet 24 while being operated on the right side. Oil tank 25 and hydraulic pump 26
The hydraulic pump 26 and the engine 27 are covered by a right bonnet 28, and a rear wall 29 is provided upright at the rear edge of the swivel 20.

The boom 3 has a base end pivotally supported by a boom stay 30 projecting upward from the center of the rear wall 29 via a boom support shaft 31 whose axis is oriented in the left-right direction. The boom 3 has a rectangular cylindrical inner boom forming member 33 extending in the front-rear direction slidably inserted in a front and rear direction into a rectangular cylindrical outer boom forming member 32 extending in the front-rear direction. A telescopic cylinder 34 as a hydraulic actuator is interposed between the inner boom forming body 32 and the inner boom forming body 33, and the inner boom forming body 33 advances and retreats in conjunction with the telescopic operation of the telescopic cylinder 34, The entire boom 3 can be extended and retracted.

An elevating cylinder 35 as a hydraulic actuator is interposed between the lower part of the boom stay 30 and a middle part of the outer boom forming body 32.
The boom 3 is turned up and down around the boom support shaft 31 (up and down) in conjunction with the expansion and contraction of the work table 4 so that the work table 4 described later can be moved up and down.

The workbench 4 connects the lower part of the rear wall to the tip of the inner boom former 33, and the inner boom former 33
While the boom-side connector 36 protrudes forward at the tip of the workbench, the workbench-side connector 37 protrudes rearward from the lower part of the rear wall, and the two connectors 36, 37 It is connected via a worktable support shaft 38 whose axis is directed toward the shaft.

Then, the rear wall of the work table 4 and the boom-side connecting body
36, a first attitude holding cylinder 39 is interposed.
A second attitude holding cylinder 40 is interposed between the outer boom forming body 32 and the boom stay 30, and the rods and bottoms of both cylinders 39, 40 are connected to two hydraulic hoses (not shown).
The work table 4 can be held in a substantially horizontal posture regardless of the vertical movement of the boom 3.

As shown in FIGS. 4 and 5, the work table 4 is formed in a box shape with an upper surface opening and provided with various operation means on the work table side. The left and right traveling operation levers 45 and 46 are provided on the left support 44 laid on the upper left side, while the right support 4 laid on the upper right is provided.
7 is provided with an accelerator lever 48 and a boom expansion / contraction operation lever 49, and a pedal for raising / lowering / turning operation is provided at the center of the floor 50.
51 are provided. Reference numeral 52 denotes a container support frame detachably attached to the work table 4 for supporting a harvest container or the like.

The left and right traveling operation levers 45, 46 coaxially support their base ends on lever support shafts 59 attached to the left support 44, and rotate the levers 45, 46 in the front-rear direction. It is operable, and twin wires 55, 5 as an interlocking connection mechanism are provided between the levers 45, 46 and the left and right traveling hydraulic valves 53, 54 which are a part of the hydraulic control unit 22 described later.
6 and the link mechanism 57, 58 for spool operation are interposed,
Twin wires 55 and 56 are two Bowden wires 55 each
a, 55b, 56a, and 56b are formed as a set.

Thus, the left and right traveling operation levers
By rotating 45, 46 in the front and rear direction respectively,
Left and right traveling parts 10, via left and right traveling valves 53, 54
The steering operation can be performed by controlling 10 hydraulic motors.

The accelerator lever 48 has a base end pivotally supported by a lever support shaft 59 protruding from the right-side support member 47 so that the accelerator lever 48 can be rotated in the front-rear direction.
48 and a throttle (not shown) of the engine 27 mounted on the upper body 2 are interlockingly connected via an interlocking mechanism 60.

The interlocking mechanism 60 pivotally supports a middle part of a relay lever 61 which forms a part of a deceleration operating mechanism described below on the lower surface of the floor 50 by means of a pivot 61a whose axis is oriented vertically.
The first between the one end of the relay lever 61 and the accelerator lever 48
A push / pull wire 62 is provided, and a second push / pull wire 63 is provided between the other end of the relay lever 61 and the throttle of the engine 27.
Is formed to be larger than the wire diameter of the first push-pull wire 62.

By rotating the accelerator lever 48 backward and pulling the first push / pull wire 62 in this way, the second push / pull wire 63 is pulled via the relay lever 61, The throttle of the engine 27 connected to the tip of the second push-pull wire 63 can be operated in a direction in which the engine speed increases.

By rotating the accelerator lever 48 forward, the throttle of the engine 27 can be operated in the direction in which the engine speed decreases, contrary to the above.

Here, the above-mentioned relay lever 61 and boom 3
A rotation speed reducing operation means 65 is interposed between the upper end of the boom 3 and the rotation speed reducing operation means 65. The operation is performed, and the accelerator lever 48 is moved back in the deceleration operation direction.

That is, the rotation speed reducing operation means 65 attaches a rotation operation cam 66 to a worktable support shaft 38 connecting the boom-side connection member 36 and the worktable-side connection member 37, and the rotation operation cam 66. Has a constant relative angle with the boom 3 so as to rotate in conjunction with the upward rotation of the boom 3, while a deceleration operating mechanism 67 is provided on the lower surface of the floor 50 of the worktable 4.

The deceleration operating mechanism 67 has an operating pin 69 slidably mounted in the front-rear direction on the lower surface of the floor 50 via a support 68. The rear end of the operating pin 69 is connected to the rotary operating cam 66. On the other hand, the front end of the operating pin 69 is disposed in the vicinity of immediately behind the operating pin receiving piece 70 suspended from the relay lever 61, and the operating pin 69 is rotated by a coil spring 71. It is elastically biased in the retreating direction so as to press against the cam 66.

In the state where the engine speed is set high by the accelerator lever 48, the boom 3
Is rotated upwardly, the rotating operation cam 66 associated therewith is rotated.
However, in the side view shown in FIG. 4, the work pin 69 is rotated clockwise around the worktable support shaft 38 to press the action pin 69 forward.

Then, the working pin 69 pressed forward is slid forward, and the working pin 69 presses the working pin receiving piece 70, and the relay lever 61 is moved through the working pin receiving piece 70.
In the plan view shown in FIG. 5, the accelerator lever 48 is rotated clockwise about the pivot 61a to return the accelerator lever 48 to the deceleration operation direction via the first push-pull wire 62 connected to one end of the relay lever 61. At the same time, the throttle of the engine 27 is operated in the direction of decreasing the engine speed via a second push-pull wire 63 connected to the other end of the relay lever 61.

At this time, while the boom 3 is raised and rotated to a predetermined height, the rotation operation cam 66 operates the throttle to reduce the engine speed in proportion thereto. Is maintained at a constant low engine speed even when is rotated upward.

Therefore, when the boom 3 is raised while the rotation speed of the engine 27 is set higher than the predetermined rotation range, the rotation speed reduction operation means 65 reduces the rotation speed of the engine 27 to the predetermined rotation range. In order to operate to forcibly reduce
In a state where the boom 3 is rotated upward beyond a predetermined height,
The engine speed is always reduced.

The boom telescopic operation lever 49 is connected to the left support 44.
The base end is coaxially pivotally supported on a lever support shaft 73 attached to the boom, so that the boom telescopic operation lever 49 can be rotated in the front-rear direction, and the boom telescopic operation lever 49 and a hydraulic control unit 22 described later And a twin wire 75 as an interlocking coupling mechanism between the boom extension hydraulic valve 74 which is a part of
And a spool operating link mechanism 76, and the twin wire 75 is formed as a pair of two Bowden wires 75a and 75b.

In this manner, the boom telescopic operation lever 49
Is rotated in the front-rear direction, whereby the telescopic cylinder 34 is appropriately extended and retracted via the boom telescopic valve 74 so that the boom 3 can be extended and retracted.

The lifting / lowering / turning pedal 51 is attached to the vertical / left / right swinging support mechanism 77 provided on the lower surface of the floor 50 so as to be swingable in the front / rear and left / right directions. Between 51 and a boom elevating hydraulic valve 78 which is a part of the hydraulic control unit 22 described later, a twin wire 79 and a spool operating link mechanism 80 as an interlocking coupling mechanism are interposed, respectively. Each of the wires 79 is formed as a pair of two Bowden wires 79a and 79b.

In this way, the pedal for raising and lowering and turning operation is provided.
The boom 3 can be moved up and down by swinging the 51 in the front-rear direction so that the up-and-down cylinder 35 is appropriately expanded and contracted via the boom-lift hydraulic valve 78.

A left / right swinging member 81 is vertically attached to the front / rear / left / right swinging support mechanism 77, and left and right turning switches 82 and 83 are disposed on the left and right sides of the left / right swinging member 81, respectively. Switches 82 and 83 are electrically connected to the turning electric motor 21.

In this manner, the lifting / turning pedal is operated.
When the swing switch 51 is swung in the left and right direction, the turning switch on the side opposite to the swinging side is turned on via the left and right swinging body 81, and the turning electric motor 21 is driven, thereby turning the upper body. 2 can be turned to the swing operation side.

Here, the wires 55, 56, 63, 75, and 79 connected to the operation levers 45, 46, 49, the accelerator lever 48, and the lifting / swinging / turning pedal 51 are arranged inside the boom 3. The first attitude holding cylinder 39 is arranged closer to the right side than the left and right center positions of the boom 3 and the left side of the boom 3 is largely opened, thereby allowing the wires 55, 56, 6
3, 75, 79 can be easily bundled and inserted into the boom 3. 99 is a cylinder cover body.

Next, the hydraulic control unit 22 will be described. As shown in FIGS. 6 and 7, the hydraulic control unit 22 includes a left / right traveling hydraulic valve 53, 54 and a boom extending / contracting hydraulic valve 74. A boom elevating hydraulic valve 78 is also provided, and a common support shaft 85 is laid horizontally above the hydraulic valves 53, 54, 74, 78 via a support frame 86, and each spool is mounted on the common support shaft 85. The operation link mechanisms 57, 58, 76, and 80 are coaxially attached, and the spool connection arms 57a, 58a, 76a, and 80a are provided on the respective link mechanisms 57, 58, 76, and 80 so as to protrude outward.
Twin wire connecting arm 57b, 57c, 58b, 58c, 76b, 76c, 80
b, 80c are provided in a protruding shape in the vertical direction, respectively, and the spool 53a, 54a, 74a, which is provided with the distal end of each spool connecting arm 57a, 58a, 76a, 80a at each hydraulic valve 53, 54, 74, 78. While being connected to the upper end of 78a via links 87, 88, 89, 90, respectively, the twin-wire connecting arms 57b, 57c, 58b, 58c, 76b,
The tips of the twin wires 55, 56, 75, 79 as an interlocking connection mechanism are connected to the tips of 76c, 80b, 80c.

Then, each spool operating link mechanism 57,5
The left and right traveling operation valve levers 91 and 92, telescopic operation valve levers 93, and elevating valve levers 94 are used as various upper body side operation means from the spool connecting arms 57a, 58a, 76a and 80a of 8, 76 and 80, respectively. Are extended outward so that the hydraulic valves 53, 54, 74, 78 can be directly operated.

A concave portion 95 is formed in the left front side wall of the left bonnet 24 covering the hydraulic control unit 22 composed of the hydraulic valves 53, 54, 74, 78 described above, and the concave portion 95 is provided in the concave portion 95. Left and right traveling operation valve levers 91, 92, a telescopic operation valve lever 93, and end operating portions 91a, 92a, 93a, 94a of an elevating valve lever 94 are arranged.

Thus, each of the valve levers 91, 92, 9
3,94 tip operation parts 91a, 92a, 93a, 94a are left bonnet 24
Each of the distal end operation portions 91a, 92a, 93a, 94a can be prevented from interfering with other objects and being damaged or malfunctioning. Therefore, protection and safety of each of the valve levers 91, 92, 93, 94 can be ensured well.

Further, the left bonnet 24 can be freely opened and closed via a pivot 24a, and an interference avoiding hole 96 is formed in a concave portion 95 formed in the side wall of the left bonnet 24, and each valve lever is passed through the interference avoiding hole 96. The tip operating parts 91a, 92a, 93a, 94a of the 91, 92, 93, 94 are protruded, and the tip operating parts 9 of the respective valve levers 91, 92, 93, 94 are attached to the left bonnet 24 that opens and closes.
1a, 92a, 93a and 94a do not interfere.

Thus, each of the valve levers 91, 92, 9
The 3,94 distal end operating portions 91a, 92a, 93a, 94a can be arranged at appropriate locations that are easy for the operator to operate, and the left bonnet 24 can be positioned without being affected by the distal operating portions 91a, 92a, 93a, 94a. The opening and closing operation can be ensured satisfactorily.

Next, the transmission mechanism 100 interposed between the hydraulic pump 26 and the engine 27 and the tension clutch mechanism 101 provided in the transmission mechanism 100 will be described with reference to FIGS.

That is, the transmission mechanism 100 includes the hydraulic pump 26
A transmission belt 104 is wound between input shaft 102 and output shaft 103 of engine 27 in a relaxed state via input / output pulleys 105 and 106.

The tension clutch mechanism 101 includes
The base end of the tension arm 108 is pivotally supported on an arm stay 107 provided above via a pivot 109, and the tension arm 108
Attach the tension roller 110 to the tip of the
A tension spring 111 is interposed between the tension arm 108 and the arm stay 107, and the tension spring 111 is provided.
Causes the tension roller 110 to be pressed against the transmission belt 104, causing the transmission belt 104 to be in a tensioned state (a clutch connected state).
And that.

The arm interlocking piece 112 extends downward from the base end of the tension arm 108, while the base end of the clutch operating lever 114 is attached to a lever stay 113 disposed in front of the arm interlocking piece 112. Pivot part 115, the base end
A lever interlocking piece 116 projects upward from 115, and an interlocking link is provided between the lever interlocking piece 116 and the arm interlocking piece 112.
117 are interposed.

In this way, the clutch operating lever 114
The tension roller 110 is separated from the power transmission belt 104 by rotating the tension arm 108 upward against the elastic biasing force of the tension spring 111 to rotate the power transmission belt 104 in a relaxed state. (Clutch disengaged state).

At this time, the tension spring 111 has a halfway portion of the tension arm 108 of the tension arm 108 in the clutch connected state.
09, the tension arm 108 is pulled so as to rotate the tension arm 108 downward, while in the clutch disengaged state, the middle part is located above the pivot 109 of the tension arm 108, The tension arm 108 is pulled so as to rotate upward, so that the tension arm 108 can be stabilized in any state.

FIGS. 10 and 11 show the swivel fixing means 120 for connecting the base 11 and the swivel 20 and fixing the swivel 20 to the base 11. Is the base 11
A rod penetration portion 121 is provided at the left front portion of the
A rod through-hole 122 is formed in the left front part by vertically penetrating the rod, and the rod through-hole 122 and the rod penetrating part 121 are aligned with each other in the vertical direction, and the connecting rod 123 is penetrated into the rod through-hole 122. At the same time, connecting rod 123
The base 11 and the turntable 20 are connected to each other by penetrating the tip of the turntable 20 so that the turntable 20 can be fixed to the base 11.

As described above, when transporting the machine, the swivel table 20 is fixed to the base 11 by the swivel table fixing means 120, so that the swivel table 20 is unexpectedly turned due to vibration or impact. Operation can be prevented, and safety at the time of transportation or the like can be reliably ensured.

[0059]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, various operation means on the work table provided on the work table and a hydraulic valve provided on the upper body are interlockingly connected via an interlocking connection mechanism to perform various operations on the work table side. The hydraulic actuator that moves the lower body through the hydraulic valve and the hydraulic actuator that rotates the boom up and down can be operated by means, and various operating means on the upper body side are operatively connected to the hydraulic valve so that various The operating means can also operate a hydraulic actuator that moves the lower body through a hydraulic valve and a hydraulic actuator that rotates the boom up and down.

In this way, when the interlocking connection mechanism fails to perform the interlocking function due to a failure or the like, the upper body side various operating means are operated to open and close the hydraulic valve, and the desired hydraulic actuator is operated. It can be activated and can respond quickly to emergency situations. Therefore, safety and work efficiency in working at high places can be ensured satisfactorily.

According to the second aspect of the present invention, a spool operating link is provided between a spool provided on the hydraulic valve and a distal end side of an interlocking connection mechanism having a base end connected to various operation means on the work table side. The mechanism is interlocked and connected, and a part of the spool operating link mechanism is extended to form various upper body side operation means.

In this manner, the upper body-side various operation means can be provided at a low cost with a simple structure, and the spool of the hydraulic valve can be reliably operated by the upper body-side various operation means. The valve can be smoothly opened and closed.

According to the third aspect of the present invention, a concave portion is formed in the side wall of the bonnet covering the hydraulic valve, and the tip operating portions of the various upper body-side operating means are disposed in the concave portion.

By arranging the distal end operating portions of the various upper body side operating means in the recesses in this manner, the distal end operating portions are prevented from protruding outward from the side wall of the bonnet, and the distal end operating portions are prevented from projecting outward. It is possible to prevent the portion from being damaged by the interference with other objects or malfunctioning. Therefore, protection and safety of the upper body side various operation means can be favorably ensured.

[Brief description of the drawings]

FIG. 1 is a left side view of an aerial work vehicle according to the present invention.

FIG. 2 is a right side view of the aerial work vehicle.

FIG. 3 is a plan view of the aerial work vehicle.

FIG. 4 is a partially cutaway left side view of the worktable.

FIG. 5 is a partially cutaway plan view of the work table.

FIG. 6 is a rear view of the hydraulic control unit.

FIG. 7 is a side view of the hydraulic control unit.

FIG. 8 is a side view of a transmission mechanism and a tension clutch mechanism.

FIG. 9 is a plan view of the transmission mechanism and a tension clutch mechanism.

FIG. 10 is a plan view of the swivel holding means.

FIG. 11 is a partially cutaway front view of the swivel holding means.

[Explanation of symbols]

 A Aerial work platform 1 Lower body 2 Upper body 3 Boom 4 Workbench

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B075 JA02 JA03 JA04 3F333 AA08 AB04 BD02 BE02 FA13 FA20 FA21 FA22 FB10 FH10

Claims (3)

[Claims] 1. A lower body (1) having a traveling function and an upper body (2) provided on the lower body (1), wherein the upper body (2) has a base end of a boom (3). The boom stay (30) is pivotally supported so that the boom (3) can be freely turned up and down, and a work table (4) is attached to the tip of the boom (3). (4) A work platform-side various operating means provided on the work platform (4) in an aerial work vehicle capable of performing a traveling operation of the lower body (1) and an up-and-down rotation operation of the boom (3) above. And the upper body (2)
Hydraulic actuators and booms (3) that interlock and connect the hydraulic valve provided on the lower body (1) via the hydraulic valve with various operating means on the workbench side
The upper body side various operation means are linked to the hydraulic valve and the lower body (1) travels via the hydraulic valve by the upper body side various operation means. An aerial work vehicle capable of operating a hydraulic actuator or a hydraulic actuator for vertically rotating a boom (3). 2. A spool operating link mechanism is interlockingly connected between a spool provided on the hydraulic valve and a distal end side of an interlocking connection mechanism having a base end connected to various operation means on the workbench side. 2. The aerial work vehicle according to claim 1, wherein a part of the spool operating link mechanism is extended to serve as an upper body side various operation means. 3. A bonnet (2) covering a hydraulic valve.
3. The aerial work vehicle according to claim 1, wherein a recess (95) is formed in the side wall of (4), and the tip operating sections of various operating means on the upper body side are arranged in the recess (95).