JP5913865B2 - Aerial work platform - Google Patents

Description

The present invention relates to an aerial work vehicle, and more particularly to an aerial work vehicle that is stored in a state in which a boom is laid down on a vehicle body.

The aerial work vehicle includes a vehicle body that can travel, a swivel that is pivotable on the vehicle body, a boom that is pivotably connected to the swivel base, and a tip of the boom. The boom is stored in a state where the boom is laid down on the vehicle body during non-work such as location movement. When storing the boom, for example, the boom is laid down toward the front of the vehicle body, and the work table located at the tip of the boom is held so as to extend to the front side of the driving cab.

When an operator enters the work platform at the tip of the boom stored in this way from the ground side, and when the worker descends from the work platform to the ground side, the worker is provided on the side of the boom. It moves through the boarding / exiting route on the body. Since such a movement on the vehicle body may fall, a configuration has been proposed in which a handrail is provided on the boom side juxtaposed to the worker's boarding / exiting route, and a safe boarding / exiting is ensured by grasping the handrail. (For example, refer to Patent Document 1).

JP 2009-1404 A

However, if the worker moves on the vehicle body without grasping the handrail, the worker may fall. Therefore, there has been a demand for a measure for more reliably preventing the worker from falling from the vehicle body.

The present invention has been made in view of such problems, and an object of the present invention is to provide an aerial work vehicle that prevents an operator from falling on the vehicle body when getting on and off the work table.

In order to achieve such an object, an aerial work vehicle according to the present invention includes a vehicle body that can travel, a swivel that is turnable on the car body, and a base end portion that is pivotally connected to the swivel. A boom is provided that can be raised and lowered, and a workbench that is provided at the tip of the boom. The boom is configured to be stored in a state of being laid down on the vehicle body. In addition, the swivel base is provided at the rear part of the vehicle body, and the boom is configured to be telescopically movable by combining a plurality of boom members in a nested manner, and the boom is retracted in front of the vehicle body. The vehicle is laid down and stored in a state where the work table is disposed above a driving cab provided at the front of the vehicle body. And
In a state where the boom is stored on the vehicle body, an getting-on / off route for an operator to get on the work table from the ground is provided along the side of the boom on the vehicle body, A guide rail extending along the side of the boom and extending onto the driving cab is attached to the boom, and the guide rail is attached to the boom. The boom member is attached to a base end side boom member that is pivotally connected to the swivel, and is formed to bend and extend downward on the base end side of the base end side boom member, and slides on the guide rail. A safety device that can be freely attached is provided, and a tip locking portion of a fall prevention tool worn by an operator on the safety device is detachable.

According to the present invention, the guide rail extending from the base end portion to the tip end portion of the boom along the boarding / alighting path on the vehicle body is attached to the boom, and the safety device that removably locks the locking portion of the fall prevention tool. However, since it can be slidably mounted on the guide rail, the fall prevention tool can be used by the worker even on the boarding / alighting route on the vehicle body, and the worker can fall from the vehicle body when getting on and off the work table. It becomes possible to prevent more reliably.

Further, in the above-described invention, when the boom is configured to be telescopically movable by combining a plurality of boom members in a nested manner, if the guide rail is attached to the base end side boom member,
The boom can be expanded and contracted with the guide rail attached.

It is a side view of an aerial work vehicle. It is a top view of an aerial work vehicle. It is a rear view of an aerial work vehicle. It is a side view of a base end boom and a guide rail. It is the 1st sectional view of a base end boom and a guide rail. It is a 2nd sectional view of a base end boom and a guide rail. It is a perspective view of a safety device. It is a perspective view which shows the modification of a safety device. It is sectional drawing which shows the modification of a base end side rail attaching part. It is sectional drawing which shows the modification of a front end side rail attaching part.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. An aerial work vehicle 1 according to the present embodiment is shown in FIGS. The aerial work vehicle 1 is capable of traveling with front and rear wheels 3a and 3b, and is constructed based on a truck vehicle having a driving cab 2a at the front.
On the vehicle body 2 of the truck vehicle, there is disposed a turntable 4 which is driven by a turn motor (hydraulic motor) (not shown) so as to be able to turn horizontally. A base 5 is pivotally connected to the swivel 4 and a boom 5 is attached. The boom 5 is moved up and down by a hoisting cylinder 6. The boom 5 is configured such that a proximal boom 5a, an intermediate boom 5b, and a distal boom 5c are combined in a nested manner, and can be expanded and contracted by a built-in telescopic cylinder (not shown).

The tip boom 5c has a boom head 5d at the tip, and is pivotally connected to the boom head 5d and attached to the support member 8 so as to be swingable up and down. The support member 8 has a vertical post portion (not shown), and swinging control of the support member 8 is performed by a leveling cylinder (not shown) disposed between the boom head 5d and the support member 8. Regardless of whether the boom 5 is raised or lowered, the support member 8 is controlled to swing so that the vertical post portion always extends vertically. In this manner, the work table 9 is attached to the vertical post portion which is always held vertically so as to be able to swing horizontally (swing freely), and the work table 9 is always held horizontally regardless of the undulation of the boom 5.

A lifting device 10 is provided at the upper end of the support member 8. In addition, outriggers 11 that are extendable downward are provided at four locations on the front, rear, left, and right of the vehicle body 2, and when performing a work at a high place, the vehicle body 2 can be lifted up and supported. Further, the aerial work vehicle 1 of the present embodiment is configured to be stored with the boom 5 contracted on the vehicle body 2 in a contracted state. When the boom 5 is stored, the boom 5 is laid down toward the front of the vehicle body 2, and the work table 9 positioned at the tip of the boom 5 is held so as to extend to the front side of the driving cab 2a.

By the way, on the left side of the vehicle body 2 is a first for accommodating tools and equipment necessary for various operations.
To third tool boxes 21 to 23. The first tool box 21 is a hermetically sealed tool box, and is arranged on the left side of the swivel base 4 located at the rear part of the vehicle body 2. The second tool box 22 is a first tool box 21.
Is a hermetically sealed tool box having the same width and larger length and height than the first tool box 21, and is disposed adjacent to the front side of the first tool box 21. The third tool box 23 is a second tool box 22.
Is a hermetically sealed tool box having the same width and length and smaller height than the second tool box 22, and is disposed on the second tool box 22 so as to be offset forward. As a result, the first
A stepped path is formed by the upper surface portions (top plates) of the third tool boxes 21 to 23. In addition, each tool box 21-23 has sufficient intensity | strength of the grade which is not damaged even if operator OP gets on.

A first step 24 is provided at the left rear end of the vehicle body 2 so that the operator OP can get on and off the vehicle body 2 (first tool box 21) from the ground side. Third tool box 23 and driving cab 2 on the vehicle body 2
A second step 25 having the same height as the upper portion of the driving cab 2a (a third step 26 described later) is disposed between the operator OP and the operator OP riding on the third tool box 23. The second step 25 is used to get on and off the driving cab 2a. A third step 26 extending to the front side of the driving cab 2a is disposed on the upper left side of the driving cab 2a.
The operator OP who gets on the third step 26 on the top is configured to be able to get on and off the work table 9. Thereby, in a state where the boom 5 is stored on the vehicle body 2, the operator OP extends from the first step 24 to the first to third tool boxes 21 to 23, the second step 25, and the third step 26. A boarding / alighting route RT to / from the work table 9 is provided on the vehicle body 2 along the boom 5.

Note that first to third side fences 27 to 29 are attached to the left end portion of the vehicle body 2. The first side fence 27 is attached to the first step 24 and the left end portion of the first tool box 21, and when the operator OP gets on and off the vehicle body 2 (first tool box 21) from the ground side. You can grab it. The second side fence 28 is attached to the left end portion of the first tool box 21 and is disposed adjacent to the front side of the first side fence 27, and is located above the first tool box 21 or the second tool box 22. The operator OP riding on the vehicle is prevented from falling. The third side fence 29 is attached to the left end portion of the third tool box 23 to prevent the operator OP riding on the third tool box 23 from falling down. A fourth side fence 30 is attached to the left end portion of the third step 26 to prevent the operator OP riding on the third step 26 (driving cab 2a) from falling down.

Among the booms 5, the boom 5 is connected to the vehicle body 2 on the base end boom 5 a whose base end is pivotally connected to the swivel 4.
In the state stored above, the guide rail 40 extending from the proximal end portion of the proximal end boom 5a to the distal end portion along the above-described getting-on / off route RT is attached. The guide rail 40 is formed by connecting two rail members made of a metal material such as an aluminum alloy by a metal joint, and includes a base end side rail mounting portion 50, an intermediate rail mounting portion 60, and a front end side rail mounting. The unit 70 is attached to the left side of the proximal boom 5a. As shown in FIG. 4, the guide rail 40 has, in order from the base end side, a first straight portion 41 extending vertically downward with respect to the base end boom 5 a and a 1/4 arc shape connected to the first straight portion 41. Curved portion 42, a second straight portion 43 connected to the curved portion 42 and extending substantially parallel to the proximal boom 5a, and a second straight portion 4 connected to the second straight portion 43.
3 (base end boom 5a) and an inclined portion 44 extending upwardly and a third linear portion 45 connected to the inclined portion 44 and extending substantially parallel to the base end boom 5a.

As shown in FIG. 5, the base end side rail mounting portion 50 includes a first bracket 51, a first lower plate 52, a first side plate 53, a first arm plate 54, and a first arm plate 54. It has a mounting bracket 55 and is mounted in the vicinity of the base end portion of the base end boom 5a. The first bracket 51 is formed by joining a plurality of metal plate materials by welding or the like, and covers the upper surface and part of the left side surface of the proximal boom 5a and is configured to be able to support the guide rail 40. A rubber plate 57a is sandwiched between the upper surface of the proximal boom 5a and the first bracket 51, and a rubber plate 57b is also sandwiched between the left side surface of the proximal boom 5a and the first bracket 51. ing.

The first lower plate 52 is formed in a plate shape that covers a part of the lower surface of the proximal boom 5a using a metal material, and a lower end portion of the first bracket 51 using a fastening member 56a such as a bolt and a nut. Concatenated with Three rubber plates 57c, 57d, and 57e are sandwiched between the lower surface of the base end boom 5a and the first lower plate 52. The first side plate 53 is formed in a plate shape that covers a part of the right side surface of the proximal boom 5a using a metal material, and the lower end portion is a fastening member 56b.
Is connected to the first lower plate 52 and the upper end portion is connected to the first bracket 51 using the fastening member 56c. A rubber plate 57 f is sandwiched between the right side surface of the proximal boom 5 a and the first side plate 53. And the 1st bracket 51, the 1st lower plate 52, and the 1st side plate 53 are three fastening members 56a, 56b,
The proximal boom 5a is tightened by the fastening force of 56c so that the proximal rail mounting portion 50 is secured.
Is attached in the vicinity of the base end portion of the base end boom 5a (see FIGS. 1 and 4).

The first arm plate 54 is formed in a plate shape that extends in the left-right direction of the base end boom 5a using a metal material, and is connected to the upper end portion of the first bracket 51 using two fastening members 56d and 56e. . The first mounting bracket 55 is formed in a block shape using a metal material, and the two first mounting brackets 55, 55 are connected to the guide rail 40 from above and below using a fastening member 56 f.
Is attached to the distal end portion of the first arm plate 54 in a state of sandwiching. Thereby, the base end side of the 2nd linear part 43 in the guide rail 40 is attached and hold | maintained at the base end side rail attaching part 50 (refer FIG. 1 and FIG. 4).

The intermediate rail attachment portion 60 has the same configuration as that of the proximal end side rail attachment portion 50, and is attached to the intermediate portion of the proximal end boom 5a as shown in FIGS. In the same manner as in the case of the base end side rail mounting portion 50, the distal end side of the second linear portion 43 in the guide rail 40 is attached and held by the intermediate rail mounting portion 60.

As shown in FIG. 6, the tip side rail mounting portion 70 includes a second bracket 71, a second lower plate 72, a second side plate 73, a second arm plate 74, and a second mounting. It has a metal fitting 75 and is attached in the vicinity of the distal end portion of the proximal boom 5a. The second bracket 71 is formed by joining a plurality of metal plate materials by welding or the like, covers the upper surface and a part of the left side surface of the base end boom 5a, and is configured to support the guide rail 40. A rubber plate 77a is sandwiched between the upper surface of the proximal boom 5a and the second bracket 71, and a rubber plate 77b is also sandwiched between the left side surface of the proximal boom 5a and the second bracket 71. ing.

The second lower plate 72 is formed in a plate shape that covers a part of the lower surface of the base end boom 5a using a metal material, and a lower end portion of the second bracket 71 using a fastening member 76a such as a bolt and a nut. Concatenated with Three rubber plates 77c, 77d, 77e are sandwiched between the lower surface of the base end boom 5a and the second lower plate 72. The second side plate 73 is formed in a plate shape that covers a part of the right side surface of the proximal boom 5a using a metal material, and the lower end portion is a fastening member 76b.
Is connected to the second lower plate 72 and the upper end portion is connected to the second bracket 71 using the fastening member 76c. A rubber plate 77 f is sandwiched between the right side surface of the proximal boom 5 a and the second side plate 73. And the 2nd bracket 71, the 2nd lower plate 72, and the 2nd side plate 73 are three fastening members 76a, 76b,
The proximal end boom 5a is tightened by the fastening force of 76c so that the distal end side rail mounting portion 70 is tightened.
Is attached in the vicinity of the distal end portion of the proximal boom 5a (see FIGS. 1 and 4).

The second arm plate 74 is formed in a plate shape that extends in the left-right direction of the proximal boom 5a using a metal material, and is connected to the upper end portion of the second bracket 71 using two fastening members 76d and 76e. . The second mounting bracket 75 is formed in a block shape using a metal material, and the two second mounting brackets 75, 75 are connected to the guide rail 40 from above and below using a fastening member 76f.
Is attached to the distal end portion of the second arm plate 74. Thereby, the 3rd linear part 45 of the guide rail 40 is attached and hold | maintained at the front end side rail attaching part 70 (refer FIG. 1 and FIG. 4). Thus, the guide rail 40 is attached to the left side of the base end boom 5a by the base end side rail attaching part 50, the intermediate rail attaching part 60, and the front end side rail attaching part 70. Therefore, the boom 5 can be expanded and contracted while the guide rail 40 is attached. Moreover, since each rail attaching part 50,60,70 is attached so that it may wind around the periphery of the base end boom 5a using a thin plate-shaped member, it collides with another member, with the guide rail 40 attached. The boom 5 can be moved up and down and swiveled.

1 and 7 with respect to the guide rail 40 attached to the left side of the base end boom 5a by the base end side rail attaching portion 50, the intermediate rail attaching portion 60, and the tip end side rail attaching portion 70.
As shown in FIG. 4, the safety device 81 provided in the safety device 80 for preventing the fall can be slidably attached. The safety device 80 includes a safety device 81 and a coupler 85. The guide rail 40 is used in the manufacturing process of the aerial work vehicle 1 or the aerial work vehicle 1.
Is attached to the left side of the proximal boom 5a.

As shown in FIG. 7, the safety device 81 includes a safety device body 82 and four guide rollers 83, 83.
,... The safety device main body 82 is formed in a block shape having a groove portion at the center using a metal material such as stainless steel, and a part (convex portion) of the guide rail 40 is inserted into the groove portion of the safety device main body 82. It has become. The four guide rollers 83, 83,... Are rotatably attached to the four corners of the safety device main body 82, and are configured to be able to rotate by engaging with the convex portions of the guide rail 40 inserted through the grooves of the safety device main body 82. The Thus, the guide rail 40 is inserted into the groove portion of the safety device main body 82 from the proximal end portion or the distal end portion.
On the other hand, the safety device 81 can be slidably attached. The safety device 81 includes a lock mechanism (not shown) that restricts the sliding movement of the safety device 81 on the guide rail 40.
The safety device 81 on the guide rail 40 is always provided by this locking mechanism.
Only when the lock release button (not shown) provided on the safety device 81 is pushed and operated, the operation of the lock mechanism is released so that the safety device 81 can be slid. It has become.

As shown in FIG. 4, a proximal end stopper 46 is attached to the proximal end portion of the guide rail 40 so that the safety device 81 does not come out of the proximal end portion of the guide rail 40. Further, a distal end stopper 47 is attached to the distal end portion of the guide rail 40 so that the safety device 81 does not come off from the distal end portion of the guide rail 40. Although the detailed illustration of the proximal end stopper 46 and the distal end stopper 47 is omitted, a support member attached to the guide rail 40, a slide restricting position for restricting the slide movement of the safety device 81 by the support member, and a safety And a stopper member that is supported so as to be displaceable with respect to a slidable position that enables the slide movement of the device 81, and a biasing member that applies a biasing force for positioning the stopper member at the slide restricting position. Is done. The stopper member is always positioned at the slide restricting position by the urging member to restrict the sliding movement of the safety device 81. When the safety device 81 is attached to the guide rail 40 or removed from the guide rail 40, the urging member The stopper member is displaced to the slidable position against the urging force from.

As shown in FIG. 7, the connector 85 is configured in a chain shape using a metal material, and the base end portion is swingably connected to the safety device 81. And the front-end | tip part of the connector 85 is comprised so that engagement / disengagement of the rope locking tool 93 provided in the rope 92 of the fall prevention tool (safety belt) 90 is possible, as shown in FIG. In addition, in this embodiment, although the front-end | tip part of the connector 85 is formed in the annular | circular shape,
It may be configured in a bowl shape.

The fall prevention tool (safety belt) 90 is attached to the worker OP in order to prevent the worker OP from falling from the vehicle body 2 when getting on and off the work table 9, and is shown in FIG. As described above, the safety belt 91 is attached to the operator OP, the rope 92 is connected to the safety belt 91, and the rope locking tool 93 is provided at the tip of the rope 92. The rope locking device 93 is not shown in detail, but has a hook part and an opening / closing cap that opens and closes the tip of the hook part so that it can be attached to and detached from the coupler 85 of the safety device 80. Composed.

In the aerial work vehicle 1 configured as described above, in order for the operator OP to enter the work table 9 with the boom 5 stored from the ground side, first, the base end side stopper 46 or the front end side stopper 47 is set. A stopper member (not shown) is displaced to a slidable position, and the safety device 81 of the safety device 80 is attached to the guide rail 40. Next, the operator OP connects the fall prevention tool (safety belt) 90 to the coupler 85 of the safety device 80 (safety device 81) attached to the guide rail 40.
The rope locking tool 93 at the tip of the cable is locked. At this time, since the base end portion (first linear portion 41) of the guide rail 40 is formed to bend downward while the boom 5 is stored on the vehicle body 2, the safety device 81 is connected to the guide rail 40. The rope locking tool 93 can be easily locked to the coupler 85 by sliding it to the base end portion (base end side stopper 46). Thereby, the fall prevention tool 90 with which the operator OP was mounted | worn via the coupler 85,
It is connected to a safety device 81 attached to the guide rail 40.

Next, the operator OP uses the first step 24 at the left rear end of the vehicle body 2 to get on the vehicle body 2 from the ground side, and gets on / off the route RT (that is, first to third) on the vehicle body 2. Tool box 21-23
The second step 25 and the third step 26) go to the work table 9. At this time,
The operator pushes the lock release button (not shown) of the safety device 81 and operates the operator OP
The safety device 81 connected to the fall prevention tool (safety belt) 90 is slid. Then, the safety device 81 moves the first linear portion 41, the curved portion 42, and the second linear portion of the guide rail 40 as the operator OP moves on the getting-on / off route RT on the vehicle body 2 toward the work table 9. 43, inclined part 4
4 and the third straight part 45 are slid in order. Thus, while the operator OP moves on the getting-on / off route RT on the vehicle body 2, the fall prevention tool 90 of the operator OP is connected to the safety device 81 attached to the guide rail 40. It is possible to prevent the vehicle body 2 from falling down when getting on and off the work table 9.

Then, the operator OP who has reached the top of the third step 26 (the driving cab 2a) gets into the work table 9 from there, and connects the rope locking device 93 of the fall prevention device (safety belt) 90 to the safety device 80. It is made to detach | leave from the apparatus 85 and is made to latch on the latching | locking part (not shown) provided in the work table 9. FIG. At this time, the inclined portion 44 is formed in the intermediate portion of the guide rail 40 so that the height position of the tip end portion (the third straight portion 45) of the guide rail 40 matches the height position of the work table 9. The rope OP 93 can be easily engaged with and disengaged from the coupler 85 while the operator OP gets on the work table 9.

On the other hand, in order for the operator OP who has boarded the work table 9 to descend to the ground side, an operation opposite to that performed when the worker OP gets into the work table 9 may be performed. In this way, the operator OP can get on and off the work table 9 in the retracted state from the ground side.

As described above, according to the present embodiment, the guide rail 40 extending from the proximal end portion to the distal end portion of the proximal boom 5a along the getting-on / off route RT on the vehicle body 2 is attached to the proximal boom 5a and falls. Since the safety device 81 that detachably locks the locking portion 93 of the prevention device 90 can be slidably attached to the guide rail 40, the operator OP also falls on the getting-on / off route RT on the vehicle body 2. The prevention tool 90 can be used, and it is possible to more reliably prevent the operator OP from falling from above the vehicle body 2 when getting on and off the work table 9.

If the guide rail 40 is attached to the proximal end boom 5a, the guide rail 4
The boom 5 can be expanded and contracted with 0 attached.

In the above-described embodiment, the boom 5 is configured to be extendable and retractable. However, the present invention is not limited to this, and the boom 5 can be expanded and contracted as long as the boom is stored on the vehicle body 2 in a lying state. You don't have to.

In the above-described embodiment, when the operator OP gets on and off the work table 9, the rope locking device 93 of the fall prevention device (safety belt) 90 is connected to the safety device 81 at the tip of the connection device 85. This is not limited to this. For example, as shown in FIG.
The buffer body 86 is connected to the front end portion of the buffer body 5, and the buffer body locking tool 87 is connected to the front end portion of the buffer body 86.
The rope locking tool 93 may be engaged and disengaged. In addition, although the detailed illustration is abbreviate | omitted, the buffer body 86 is comprised mainly by the belt folded and sewed. This belt is covered with a heat-shrinkable tube, and the shock absorber 86 has a function of absorbing the impact by stretching the folded belt when a predetermined impact load is applied. That is, the length of the buffer 86 in a state where the belt is extended is set to a length that does not collide with the ground even if the operator OP falls from the vehicle body 2. Further, the buffer locking device 87 is connected to the distal end portion of the buffer 86 and is configured in a hook shape in which the rope locking device 93 can be engaged and disengaged, but may be configured in an annular shape. .

In the above-described embodiment, when the operator OP gets on and off the work table 9, the safety device 8 in which the rope locking device 93 of the fall prevention device (safety belt) 90 is attached to the guide rail 40.
0 (safety device 81) is locked to the connector 85, but the present invention is not limited to this, and the rope locking device 93 is connected to the connector 85 (may be the above-described buffer locking device 87). The secured safety device 81 is detachably attached to the guide rail 40 (by moving the stopper member (not shown) of the base end side stopper 46 or the front end side stopper 47 to the slidable position at the time of attachment / removal). May be.

In the above-described embodiment, the first bracket 51, the first lower plate 52, and the first side plate 53 are configured to tighten the proximal boom 5a by the fastening force of the three fastening members 56a, 56b, and 56c. The base end side rail mounting portion 50 is attached to the vicinity of the base end portion of the base end boom 5a (in the case of the intermediate rail mounting portion 60, the intermediate portion of the base end boom 5a). Absent. For example, as shown in FIG. 9, the first bracket 1
51 is welded to the side surface of the base end boom 5a so that the base end side rail mounting portion 150 is attached to the vicinity of the base end portion of the base end boom 5a (in the case of the intermediate rail mounting portion, the intermediate portion of the base end boom 5a). It may be. In addition to the first bracket 151 welded to the base end boom 5a, the base end side rail mounting portion 150 shown in FIG. 9 includes the first arm plate 54 and the first attachment having the same configuration as the above-described embodiment. A metal fitting 55 is provided.

In the above-described embodiment, the second bracket 71, the second lower plate 72, and the second side plate 73 tighten the proximal boom 5a by the fastening force of the three fastening members 76a, 76b, and 76c. Thus, although the distal end side rail attachment portion 70 is attached in the vicinity of the distal end portion of the proximal end boom 5a, it is not limited to this. For example, as shown in FIG. 10, the distal end side rail mounting portion 170 may be attached to the vicinity of the distal end portion of the proximal end boom 5a by welding the second bracket 171 to the side surface of the proximal end boom 5a. In addition,
The distal side rail mounting portion 170 shown in FIG. 10 includes the second bracket 171 welded to the proximal end boom 5a, the second arm plate 74 and the second mounting bracket 75 having the same configuration as the above-described embodiment. It is configured.

DESCRIPTION OF SYMBOLS 1 High-altitude work vehicle 2 Car body 4 Turntable 5 Boom (5a Base end boom, 5b Intermediate boom, 5c End boom)
DESCRIPTION OF SYMBOLS 9 Work table 40 Guide rail 80 Safety device 81 Safety device 85 Coupling device 86 Buffer body 87 Locking body locking device 90 Fall prevention device 91 Safety belt 92 Rope 93 Rope locking device OP Worker RT boarding / exiting path

Claims (1)

A vehicle body capable of traveling, a swivel base provided on the car body so as to be pivotable, a boom whose base end is pivotally connected to the swivel base and can be raised and lowered, and provided at a tip part of the boom In an aerial work vehicle comprising a workbench and configured to be stored in a state where the boom is laid down on the vehicle body,
The swivel is provided at the rear of the vehicle body;
The boom is configured to be telescopically movable by combining a plurality of boom members in a nested manner,
The boom is retracted in front of the vehicle body in a contracted state, and the work table is stored in a state of being disposed above a driving cab provided at a front portion of the vehicle body,
In a state where the boom is stored on the vehicle body, an getting-on / off path for an operator to get on the work table from the ground is provided along the side of the boom on the vehicle body,
The getting-on / off route is provided so as to extend upward from the rear portion of the vehicle body and to extend onto the driving cab along the side of the boom,
A guide rail having a shape along the boarding / alighting path is attached to the boom,
The guide rail is attached to a base end side boom member that is pivotally connected to the swivel base among the plurality of boom members, and is formed to bend and extend downward on the base end side of the base end side boom member. ,
A safety device that can be slidably attached to the guide rail;
An aerial work vehicle characterized in that a tip locking portion of a fall prevention tool worn by an operator on the safety device is detachable.

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