JP7374560B2 - Travel guide device for aerial work vehicles - Google Patents

Description

TECHNICAL FIELD The present invention relates to a traveling guide device for an aerial work vehicle, particularly for an aerial work vehicle equipped with a revolving structure.

Driving safety is always required for aerial work vehicles, and furthermore, for traveling vehicles in general. For this reason, various travel guide devices have been proposed in the past. One example is a road marking device described in Patent Document 1. This device is installed on the side of the road along the road, and draws a band-shaped light display on the road to mark the boundary of the road, thereby ensuring safe driving of vehicles during snowy conditions.

By the way, as an example of a vehicle for working at heights, there is a self-propelled vehicle for working at heights as described in Patent Document 2, for example. This self-propelled aerial work vehicle has a rotating body that can rotate horizontally on top of a traveling body that has running wheels on the front, rear, left, and right sides.A boom that can be undulated and extended is attached to the rotating body, and a work platform is attached to the tip of the boom. In this configuration, a worker sitting on a workbench performs operations to control the traveling of the traveling body.

In the self-propelled aerial work vehicle having such a configuration, when the revolving body turns, the boom and work platform also rotate together with the swinging body, and the direction relative to the traveling body changes. For this reason, when a worker on a workbench performs an operation to control the traveling body, he or she must control the traveling body while grasping the turning position, and care must be taken to understand the traveling direction. The problem was that it was difficult to operate. Therefore, in the past, marks indicating the forward and backward directions were displayed on the top or side of the traveling body, and the worker on the workbench looked at this mark to determine the traveling direction. ing. Further, as described in Patent Document 3, it has been proposed to provide light emitting display devices on the front, rear, left and right sides of a traveling object, and to display the traveling direction by lighting up the display devices in response to a traveling operation.

Patent No. 5982325 JP 2017-75005 Publication Japanese Patent Application Publication No. 10-316397

However, a self-propelled aerial work vehicle has a structure in which a revolving body is provided on a traveling body so as to be able to rotate horizontally, a boom is attached to the revolving body which can be raised and lowered, and a work platform is provided at the tip of the boom. As the position of the work platform relative to the traveling body changes significantly depending on the rotation of the revolving body and the ups and downs and extensions and contractions of the boom, the operator on the work platform must use the traveling direction indicator mark on the traveling body to indicate the traveling direction. There is a problem in that the light emitting display device is often difficult to see.

The present invention has been made in view of these problems, and provides travel guidance that allows a worker on a work platform of an aerial work vehicle to easily recognize the travel direction when performing travel control operations. The purpose is to provide equipment.

In order to solve the above problems, a traveling guide device for an aerial work vehicle according to the present invention includes a traveling body that can run, a revolving body provided on the traveling body so as to be able to horizontally turn, and an undulating and expanding/contracting structure for the revolving body. a boom that is movably provided; a work platform provided at the tip of the boom for a worker to board; a travel operating device provided on the work platform and operated by a worker riding on the work platform; A traveling guide device for an aerial work vehicle, comprising a traveling control device that controls traveling of the traveling body in accordance with an operation of an operating device, the traveling guide device for an aerial work vehicle controlling the traveling of the traveling body with respect to a worker on the work platform. The running body is provided with a travel display device that guides and displays a direction, and the travel display device includes a guide light irradiation device that irradiates and displays a light irradiation mark indicating the travel direction from the travel body onto a road surface, and the guide light The irradiation device includes a forward light emitting indicator that irradiates and displays the light irradiation mark indicating forward movement on a road surface ahead of the traveling body in the forward traveling direction in response to an operation of the traveling operation device in the forward direction; and a backward light-emitting indicator that illuminates and displays the light irradiation mark indicating the backward movement on the road surface ahead of the vehicle in the backward movement direction in response to the operation of the device in the backward movement direction.

In the travel guide device for a high-altitude work vehicle having the above configuration, preferably, the travel operation device is configured to be capable of operating in the forward and reverse directions as well as turning left and right. When the traveling operation device performs an operation for causing the traveling body to move forward and make a left turn, the forward light emitting indicator indicates that the traveling body can move forward and make a left turn on a road surface on the front left side in the forward traveling direction of the traveling body. When the light irradiation mark is illuminated and displayed, and the traveling operation device operates to cause the traveling body to move forward and turn right, the road surface on the right side in front of the traveling body in the forward traveling direction is displayed. The light irradiation mark indicating that the vehicle is traveling forward and turning to the right is illuminated and displayed on the top, and the light emitting indicator on the reverse side indicates that the traveling operation device is operating the vehicle to cause the vehicle to travel backward and turn to the left. When this happens, the light irradiation mark indicating that the vehicle is traveling in reverse and turning left is illuminated and displayed on the road surface on the front left side of the vehicle in the backward traveling direction, and the traveling operation device causes the vehicle to travel in reverse and in a right turn. When an operation is performed, the light irradiation mark indicating that the vehicle is traveling in reverse and making a right turn is illuminated and displayed on the road surface on the front right side in the direction in which the vehicle is traveling in reverse.

Further, in the traveling guide device for a high-altitude work vehicle configured as described above, preferably, the traveling body has a pair of left and right front wheels and a rear wheel, and a steering mechanism is provided on either the front wheel or the rear wheel so that the traveling body can move. A steering sensor is provided to detect the steering direction by the steering mechanism, and the light irradiation mark indicating the turning direction is displayed by the forward light emitting indicator and the reverse light emitting indicator. It is controlled according to the detection by the steering sensor.
Furthermore, the travel guide device for a high-altitude work vehicle configured as described above preferably includes a foot switch provided on the workbench and operable by a worker, and the travel control device preferably includes a foot switch that is provided on the work platform and can be operated by a worker. The vehicle is configured to permit traveling control of the traveling body according to the operation of the traveling operation device only while the vehicle is running, and the traveling direction of the traveling body is changed depending on the operation of the traveling operation device. Control of illuminating and displaying the light irradiation mark on the road surface ahead of the vehicle by the forward light emitting display and the reverse light emitting display is performed regardless of whether or not the foot switch is operated.

Further, in this case, it is preferable that the light irradiation mark indicating the forward movement and the forward turning direction and the light irradiation mark indicating the reverse movement and the reverse turning direction have different colors.

According to the travel guide device for a high-altitude work vehicle according to the present invention, the guide light irradiation device irradiates and displays a light irradiation mark on the road surface in front of the travel direction of the vehicle in accordance with the operation of the travel operation device, so that The light irradiation mark can be irradiated and displayed over a relatively large and wide range on the road surface ahead in the direction. Therefore, even if the position of the work platform relative to the traveling body changes significantly due to the rotation of the revolving body or the ups and downs and extensions and contractions of the boom, the worker on the work platform will be able to see the light irradiation mark displayed on the road surface. It can be easily found and the direction in which the vehicle is traveling can be easily and reliably determined.

In addition, in the traveling guide device for an aerial work vehicle having the above configuration, when the traveling body is caused to travel forward, a light illumination mark indicating forward movement is illuminated and displayed on the road surface in front of the traveling body in the forward traveling direction, and the traveling body is caused to travel backward. When causing the vehicle to move backward, it is preferable to display a light irradiation mark indicating the backward movement on the road surface in front of the vehicle in the backward movement direction. In this way, the operator on the workbench can more easily and reliably grasp the traveling direction.

Furthermore, in the traveling guide device for an aerial work vehicle having the above configuration, when the traveling body is caused to turn either left or right while traveling forward or backward, the traveling body may move forward or backward on the road surface in front of the traveling body in the forward or backward turning direction. It is preferable to display a light irradiation mark that indicates not only reverse movement but also the turning direction. This makes it possible to easily and reliably grasp not only the running direction but also the turning direction when turning.

Further, in the above case, if the light irradiation mark indicating forward movement and the light irradiation mark indicating backward movement have different colors, it is possible to accurately grasp the forward and backward movement direction.

FIG. 1 is a side view of an aerial work vehicle equipped with a travel guide device according to the present invention. It is a top view of the above-mentioned aerial work vehicle. FIG. 3(a) is an explanatory diagram of the operation of the travel control lever provided on the workbench of the above-mentioned aerial work vehicle, and FIG. 3(b) is an illustration of the operation of the steering switch provided on the workbench of the above-mentioned aerial work vehicle. It is an explanatory diagram. FIG. 3 is a plan view showing a state in which the swivel base has turned 90 degrees to the right in the above-mentioned aerial work vehicle. FIG. 2 is a block diagram showing the configuration of a traveling display device provided in the above-mentioned aerial work vehicle. FIG. 3 is a plan view showing a state in which the swivel base has turned 90 degrees to the right in the above-mentioned aerial work vehicle, and illustrating that a light irradiation mark indicating the traveling direction is irradiated and displayed on the road surface. FIG. 3 is an explanatory diagram showing an example of a light irradiation mark displayed on a road surface in response to operation of a travel control lever and a steering switch in the above-mentioned aerial work vehicle.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a vehicle 1 for aerial work using a travel guide device according to the present invention, and first, the overall configuration of the vehicle 1 for aerial work 1 will be briefly described with reference to these figures.

The aerial work vehicle 1 includes a vehicle body 11 having a pair of left and right rear wheels 12 and a front wheel 13, and a traveling body 10 that can run, and a swing mechanism 15 provided on the vehicle body 11 so as to be able to horizontally pivot. a telescopic boom (hereinafter simply referred to as "boom") 30 that is supported on the upper part of the revolving body 20 via a foot pin 34 so as to be able to rise and fall freely; and a boom that is attached to the tip of the boom 30 for boarding the worker. It is configured to include a workbench 40.

A running motor (not shown) for driving the front wheels is provided inside the running body 10, and by rotationally driving the left and right front wheels 13 by this running motor, the running body 10 can be driven. It has become. Further, the traveling body 10 is provided with a steering mechanism 17, and by changing the direction of the left and right rear wheels 12 using the steering mechanism 17, the steering control of the traveling body 10 can be performed. It has become.

The rotating body 20 is attached to the traveling body 10 by a rotating mechanism 15 so as to be able to horizontally rotate 360 degrees around a vertical axis. The turning mechanism 15 has a turning motor (not shown) inside the traveling body 10, and is configured to drive the turning mechanism 15 to horizontally swing the turning body 20. The boom 30 is constructed by combining a plurality of boom members in a nested manner, and by driving a telescoping cylinder (not shown) provided inside the boom 30 to extend and contract, the entire boom 30 is moved to extend and contract in the axial direction. be able to. Further, a hoisting cylinder (not shown) is installed between the revolving body 20 and the boom 30, and by driving this hoisting cylinder to expand and contract, the entire boom 30 is moved around the foot pin 34. It can be moved up and down in a vertical plane that includes the axis.

A vertical post 32 is pivotally supported at the tip of the boom 30 so as to be swingable in the vertical direction. The vertical post 32 is controlled to swing by a leveling mechanism 33 disposed between it and the tip of the boom 30, so that the vertical post 32 is always maintained in a vertical position regardless of the undulation angle of the boom 30. The structure is as follows. The workbench 40 is rotatably attached to the vertical post 32 via a workbench bracket 41. A swinging motor (not shown) is provided inside the workbench bracket 41, and by rotating this swinging motor, the entire workbench 40 is oscillated around the vertical post 32 (horizontal rotational movement). ) can be done. Here, since the vertical post 32 is always maintained in a vertical position as described above, as a result, the floor surface of the workbench 40 is always maintained horizontally regardless of the up-and-down angle of the boom 30.

The workbench 40 is provided with an operating device 50 that is operated by a worker on the workbench. The operating device 50 includes a hoisting operation lever (not shown) for raising and lowering the boom 30, a telescoping operation lever (not shown) for extending and retracting the boom 30, and a lever for raising and lowering the boom 30 (swivel body 20). A turning operation lever (not shown) for performing a turning operation and a swinging operation lever (not shown) for performing a swinging operation of the workbench 40 are provided. When the luffing operation lever is tilted, the luffing cylinder is telescopically operated at a drive speed corresponding to the amount of the operation, and the boom 30 is raised or lowered. When a telescoping operation lever (not shown) is tilted, the telescoping cylinder is telescopically operated at a drive speed corresponding to the amount of the operation, and the boom 30 is contracted or extended. When a swing operation lever (not shown) is tilted, the swing motor is operated at a drive speed corresponding to the amount of operation, driving the swing mechanism 15 to horizontally swing the swing structure 20 with respect to the traveling structure 10. As a result, the boom 30 attached to the revolving structure 20 so as to be able to rise and fall and expand and contract also horizontally turns together. When the swing operation lever (not shown) is tilted, the swing motor is driven to rotate at a drive speed corresponding to the amount of operation, and the workbench 40 is swinged (horizontal rotation) about the vertical post 32. .

As schematically shown in FIG. 3, the operating device 50 includes a travel control lever 51 for performing travel operations (forward and backward travel and travel speed adjustment operations) of the travel body 10, and a travel operation lever 51 for performing steering operations of the travel body 10. A steering switch 52 is provided for this purpose. When the travel control lever 51 is tilted forward or backward, the travel motor for driving the front wheels is rotated in the forward or reverse direction at a drive speed corresponding to the amount of operation, thereby moving the traveling body 10 forward or backward. At the stop position where the traveling control lever 51 is in an upright state, the driving of the traveling motor is stopped and the traveling body 10 is stopped. The travel control lever 51 is configured to be located at a stop position in a free state. Therefore, when the travel control lever 51 is released, it moves to the stop position, the drive motor is stopped, and the travel body 10 is stopped. A foot switch 55 (see FIG. 5) is provided on the floor of the workbench 40, and the worker steps on the foot switch 55 to operate the travel control lever 51. Otherwise, the travel motor will not be driven.

On the other hand, when the steering switch 52 is tilted to the left or right, the steering mechanism 17 is driven at a drive speed corresponding to the amount of operation, and the direction of the left and right rear wheels 12 is changed to the left or right. 10 steering control is performed. When the steering switch 52 is in the upright position, steering drive is stopped and the left and right rear wheels 12 maintain their current steered positions. Note that the steering mechanism is not driven unless the operator steps on the foot switch 55 and operates the steering switch 52. The steering mechanism 17 is provided with a steering sensor 67 (see FIG. 5) that detects the direction of the left and right rear wheels 12, that is, the steering direction.

As described above, this aerial work vehicle 1 can horizontally turn the rotating body 20 with respect to the traveling body 10 by tilting the turning operation lever, so that, for example, as shown in FIG. The boom 30 may be extended in the traveling direction of (directions indicated by arrows F and R in FIG. 2), or the boom 30 may be extended in a direction perpendicular to the traveling direction of the traveling body 10 as shown in FIG. You can In the state shown in FIG. 2, the worker M on the workbench 40 is positioned on the workbench 40 with the operating device 40 facing forward in the traveling direction (in the direction of arrows F and R). In the state shown in FIG. 4, the worker M on the workbench 40 moves the workbench 40 so as to look at the operating device 50 on the right side of the traveling body 10, which is perpendicular to the traveling direction (the direction of arrows F and R). located above.

As shown in FIG. 3A, the worker M faces the operating device 50 and tilts the travel control lever 51 back and forth to control the travel. Therefore, when the operator M tilts the traveling operation lever 51 back and forth in the state shown in FIG. 2, the traveling body 10 travels in the same direction as the tilting operation direction. On the other hand, when the operator M tilts the traveling operation lever 51 back and forth in the state shown in FIG. 4, the traveling body 10 travels in a direction perpendicular to the direction of the tilting operation. Therefore, if the worker M does not know the horizontal rotation position of the revolving structure 20 and the boom 30 horizontally rotated together with it, the operator M may feel uncomfortable because the direction in which the travel control lever 51 is tilted is different from the travel direction. There is a problem. Since this uncomfortable feeling changes depending on the horizontal rotation position of the revolving structure 20 and the boom 30, the operator M needs to operate the travel control lever 51 while grasping this horizontal rotation position.

The traveling body 10 is provided with marks indicating its forward direction and backward direction, so that the running direction of the traveling body 10 can be visually determined. For example, as shown in FIG. 1, a forward mark 14a indicating the forward direction and a reverse mark 14b indicating the reverse direction are provided on the left and right side surfaces of the vehicle body 11 of the traveling object 10. The forward mark 14a is, for example, a green mark, and the backward mark 14b is a red mark, so that the forward and backward directions can be recognized not only by their shape but also by their color. Similarly, as shown in FIG. 4, a green forward mark 14c indicating the forward direction and a red reverse mark 14d indicating the backward direction are provided on the upper surface of the vehicle body 11. Therefore, in the state of turning as shown in FIG. 4, the worker M on the workbench 40 can see the green forward marks 14a, 14c and the red reverse mark 14b on the side and top surfaces of the vehicle body 11 from above the workbench 40. The traveling direction of the traveling body 10 can be determined by looking at 14d.

However, for example, the forward movement mark 14c and the reverse movement mark 14d provided on the upper surface of the vehicle body 11 are only visible from above when the vehicle is turned as shown in FIG. The forward movement marks 14a, 14c and the backward movement marks 14b, 14d may not be visible depending on the turning position (for example, they cannot be seen from above in the state shown in FIG. 2), and there is a problem in that they are often difficult to see from above the workbench 40. In view of this, the vehicle body 11 is provided with the traveling guide device 60 according to the present invention. This traveling guide device 60 will be explained below.

A schematic configuration of the traveling guide device 60 is shown in FIG. The travel guide device 60 includes a travel guide controller 61 that receives an operation signal from the travel operation lever 51, an operation signal from the steering switch 52, and an operation signal from the foot switch 55. A detection signal from a steering sensor 67 that detects the direction and amount of steering (steering) of the left and right rear wheels by the steering mechanism 17 is also input to the travel guide controller 61 . The travel guide device 60 further includes a light mark irradiation device 62 that is controlled by the travel guide controller 61 to illuminate and display a light irradiation mark indicating the travel direction on the road surface. As shown in FIGS. 4 and 6, the light mark irradiation device 62 includes a right front light emitting display 63 provided at the right front of the vehicle body 11, a left front light emitting display 64 provided at the left front, and a left front light emitting display 64 provided at the right rear of the vehicle body 11. It has a right rear light emitting display 65 and a left rear light emitting display 66 provided at the rear left.

As shown in FIG. 6, these four light emitting indicators 63 to 66 are designed to illuminate and display light display marks 63a to 66a indicating the driving direction on the road surface in front of each of them. The light display marks 63a and 64a illuminate the front of the vehicle in the forward direction to indicate the forward direction, and the light display marks 65a and 66a illuminate the front of the vehicle in the reverse direction to indicate the reverse direction.The light display marks 65a and 66a display red light. A display is made. The shapes of these optical display marks 63a to 66a are not limited to those shown in FIG. 6, and may be of any shape. These colors are not limited to green in the forward direction and red in the reverse direction as described above, but may be any color. However, it is preferable that the color matches the color of the forward mark 14a and reverse mark 14b displayed on the side surface of the vehicle body 11 and the color of the forward mark 14c and reverse mark 14d displayed on the top surface of the vehicle body 11.

An example of the illumination display of these optical display marks 63a to 66a is shown in FIG. First, when the travel control lever 51 is operated in the forward direction and the steering position of the left and right rear wheels 12 by the steering switch 52 is in the straight direction (the steering position of the left and right rear wheels 12 is detected by the steering sensor 67). That is, when the vehicle is controlled to travel straight forward, the light display mark shown in FIG. 7A is illuminated. That is, the right front light emitting display 63 and the left front light emitting display 64 illuminate and display green light display marks 63a and 64a on the road surface on the left and right front in the forward direction of the vehicle body 11. When the travel control lever 51 is operated in the reverse direction and the steering position of the left and right rear wheels 12 by the steering switch 52 is in the straight direction, that is, when the vehicle is controlled to travel in reverse and straight, as shown in FIG. 7(b) The illumination display of the optical display mark shown in is performed. That is, the right rear light emitting display 65 and the left rear light emitting display 66 illuminate and display red light display marks 65a and 66a on the road surface in front of the left and right in the reverse direction of the vehicle body 11.

On the other hand, the travel control lever 51 is operated in the forward direction, the steering switch 52 is operated to make a left turn, and the steering direction of the rear wheels 12 detected by the steering sensor 67 is rightward, so that the vehicle travels forward and in a left turn. Sometimes, an optical display mark shown in FIG. 7(c) is illuminated and displayed. That is, the left front light emitting indicator 64 illuminates and displays a green light display mark 64a on the road surface on the left front in the forward direction of the vehicle body 11. The driving control lever 51 is operated in the forward direction, the steering switch 52 is operated to turn right, the steering direction of the rear wheels 12 detected by the steering sensor 67 is leftward, and the vehicle is driven forward and turning right. Sometimes, the light display mark shown in FIG. 7(d) is illuminated and displayed. That is, the right front light emitting indicator 63 illuminates and displays a green light display mark 63a on the road surface on the right front in the forward direction of the vehicle body 11.

Similarly, the travel control lever 51 is operated in the reverse direction, the steering switch 52 is operated to make a left turn, and the steering direction of the rear wheels 12 detected by the steering sensor 67 is leftward, causing the reverse and left turn to be performed. At this time, the light display mark shown in FIG. 7(e) is illuminated and displayed. That is, the left rear light-emitting indicator 66 illuminates and displays a red light display mark 66a on the road surface to the left of the vehicle body 11 in the reverse direction. The driving control lever 51 is operated in the reverse direction, the steering switch 52 is operated to turn right, the steering direction of the rear wheels 12 detected by the steering sensor 67 is rightward, and the vehicle travels in reverse and turns right. Sometimes, the light display mark shown in FIG. 7(f) is illuminated and displayed. That is, the right rear light-emitting display 65 illuminates and displays a red light display mark 65a on the road surface on the right front in the reverse direction of the vehicle body 11.

As described above, the traveling guide device 60 controls the forward and backward traveling direction of the traveling body 10 by the traveling operation lever 51 and the steering direction of the left and right rear wheels 12 determined by the operation of the steering switch 52 (the turning direction of the traveling body 10). Accordingly, the light-emitting indicators 63 to 66 illuminate and display light display marks 63a to 66a in front of the traveling body in the traveling direction. Note that, as described above, the traveling body 10 cannot be driven to travel unless the foot switch 55 is stepped on and the travel control lever 51 is operated. It is preferable that the irradiation display is performed only in response to the operation of the travel control lever 51. That is, it is preferable that the light display marks 63a to 66a be illuminated and displayed by the light emitting indicators 63 to 66 regardless of whether the foot switch 55 is pressed or not.

These optical display marks 63a to 66a are displayed in large numbers on the road surface in front of the traveling body 10, so the worker M on the workbench 40 can see the light display marks 63a to 66a from above the workbench 40. Easily recognized visually. Therefore, the operator M can easily and reliably grasp the traveling direction, and can accurately operate the traveling control lever 51 and the steering switch 52.

Note that the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the gist of the present invention. For example, in the above-described embodiment, the object to which the present invention is applied is a work vehicle whose running body is of a tire-wheel type, but the running body is not necessarily limited to a tire-wheel type, and may be a crawler device or the like. It may also be something that runs.

Furthermore, in the above-described embodiment, the elevating device attached to the traveling body of the aerial work vehicle has been explained by exemplifying a telescoping boom that can raise and lower, extend and contract, and rotate, but it may also be, for example, a bendable boom or the like. There may be.

1 Aerial work vehicle 10 Traveling body 20 Swivel body 30 Boom (lifting device)
40 Workbench 50 Operating device 51 Travel control lever 52 Steering switch 55 Foot switch 60 Travel guide device 61 Travel guide controller 62 Light mark irradiation device 67 Steering sensor

Claims (5)

A movable running body,
a revolving body provided on the traveling body so as to be horizontally rotatable;
a boom provided on the revolving body so as to be movable in raising and lowering and extending and contracting ;
a work platform provided at the tip of the boom for a worker to board;
a traveling operation device provided on the workbench and operated by a worker on the workbench;
A travel guide device for an aerial work vehicle, comprising: a travel control device that controls travel of the traveling body in accordance with an operation of the travel operation device;
The traveling body is provided with a traveling display device that guides and displays the traveling direction of the traveling body to a worker on the workbench,
The traveling display device includes a guide light irradiation device that irradiates and displays a light irradiation mark indicating a traveling direction from the traveling body on the road surface,
The guide light irradiation device includes a forward light emitting indicator that irradiates and displays the light irradiation mark indicating forward movement on a road surface ahead of the traveling body in the forward traveling direction in response to the operation of the traveling operation device in the forward direction; and a reverse side light-emitting indicator that illuminates and displays the light irradiation mark indicating reverse on a road surface ahead of the vehicle in the backward travel direction in response to an operation of the travel operation device in the reverse direction. Features: Travel guide device for aerial work vehicles. The traveling operation device is configured to be capable of operating the vehicle in the forward and reverse directions, as well as turning left and right,
The forward light emitting indicator is
When the traveling operation device performs an operation to cause the traveling body to move forward and turn left, the light is irradiated on the road surface on the left side in front of the traveling body in the forward traveling direction, indicating that the traveling body is traveling forward and turning left. Illuminates and displays the mark.
When the traveling operation device performs an operation to cause the traveling body to move forward and turn to the right, the above-mentioned display indicating that the traveling body is traveling forward and to turn to the right is placed on the road surface on the front right side in the forward traveling direction of the traveling body. Illuminates and displays the light irradiation mark,
The reverse side light emitting indicator is
When the traveling operation device performs an operation to cause the traveling object to move backward and turn left, the light is irradiated on the road surface on the front left side of the traveling object in the backward traveling direction, indicating that the traveling object is traveling backward and turning left. Illuminates and displays the mark.
When the traveling operation device performs an operation to cause the traveling body to move backward and turn right, the vehicle is placed on the road surface on the front right side in the backward traveling direction of the traveling body, indicating that the traveling body is traveling backward and turning right. 2. The travel guide device for an aerial work vehicle according to claim 1, wherein a light irradiation mark is irradiated and displayed . The traveling body has a pair of left and right front wheels and a rear wheel, and either the front wheel or the rear wheel is provided with a steering mechanism so that it can be steered,
A steering sensor is provided to detect a steering direction by the steering mechanism,
3. The high-speed vehicle according to claim 2, wherein the illumination display of the light irradiation mark indicating the turning direction by the forward light emitting indicator and the reverse light emitting indicator is controlled in accordance with detection by the steering sensor. Travel guide device for work vehicles . A foot switch is provided on the workbench and can be operated by an operator,
The travel control device is configured to permit travel control of the traveling body according to the operation of the travel operation device only while the foot switch is being operated,
Control for irradiating and displaying the light irradiation mark on the road surface in front of the forward running direction and the backward running direction of the traveling body by the forward traveling side light emitting indicator and the backward traveling side light emitting indicator according to the operation of the traveling operation device, The traveling guide device for a vehicle for working at high altitudes according to any one of claims 1 to 3, characterized in that the operation is performed regardless of whether or not the foot switch is operated. The travel guide for an aerial work vehicle according to any one of claims 1 to 4, wherein the light irradiation mark indicating the forward direction and the light irradiation mark indicating the backward direction have different colors. Device.

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