JP2017165313A - Vehicle type construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle type construction machine enabling a user to promptly and properly recognize a side on which a traveling body traveling in a width direction turns, from any peripheral position.SOLUTION: In a vehicle type construction machine, at least one pair of direction indicators is provided at each of a front end portion and a rear end portion of a traveling body, and at least one pair of auxiliary direction indicators is provided between a front wheel and a rear wheel of the traveling body. One of the auxiliary direction indicators making a pair with each other, is disposed on a side part on one side of the traveling body in the width direction, and the other is disposed on a side part on the other side of the traveling body in the width direction. On the basis of operation input by an indicator operating member, of the direction indicators making a pair with each other and the auxiliary direction indicators making a pair with each other, only one on the side on which the traveling body traveling in the width direction turns lights on and off.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle-type construction machine provided with a direction indicator that indicates a side on which a traveling body bends in the width direction.

  In Patent Document 1, a large vehicle such as a trailer is provided with at least a pair of direction indicators. By operating the direction indicator (that is, by blinking the direction indicator), the side on which the traveling body running in the width direction is bent is shown, and each of the traveling body turning right and left is Announced around large vehicles. Further, in this large vehicle, a marker lamp is provided on the side of the traveling body in the width direction, and the marker lamp is turned on in conjunction with the operation of the direction indicator (flashing of the direction indicator). When the marker lamp is lit, the large vehicle is conspicuous in each of the right turn and the left turn of the traveling body, so that it is reliably notified around the large vehicle that the traveling body traveling in the width direction is bent.

JP 2014-201298 A

  In Patent Document 1, the marker lamp is lit to make a large vehicle stand out, and the side on which the traveling body running in the width direction is bent by the lighting of the marker lamp is not notified. Moreover, in the vehicle like the said patent document 1, the direction indicator which shows the side (whether it turns right or left) which the driving body currently drive | working about the width direction turns is only a front end part and a rear-end part in a driving body. And is not provided between the front wheel and the rear wheel in the front-rear direction. In the configuration in which the direction indicator is provided only at the front end portion and the rear end portion in the traveling body, it is difficult to visually recognize both the front end portion and the rear end portion of the traveling body (for example, the range between the front wheel and the rear wheel in the front-rear direction). ), The side on which the traveling body traveling in the width direction bends may not be recognized. In particular, in a vehicle-type construction machine in which the distance between the front wheel and the rear wheel is large, a range in which it is difficult to visually recognize both the front end portion and the rear end portion of the traveling body is increased around the traveling body.

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to quickly and appropriately recognize the side on which the traveling body running in the width direction is bent from any of the surrounding positions. The object is to provide a vehicle-type construction machine.

  In order to achieve the above object, a vehicle-type construction machine according to an aspect of the present invention is a traveling body, and includes at least a pair of front wheels and at least a pair of rear wheels provided rearward from the front wheels. A traveling body and a revolving body provided on the traveling body so as to be able to swivel with respect to the traveling body, wherein a work machine, an operation for running the traveling body and an operation for operating the working machine are input. And in the operation in the cab, only the front wheel is steered, the front wheel and the rear wheel are steered to the opposite side with respect to the width direction of the traveling body, and At least one pair is provided in each of the revolving body capable of steering the front wheel and the rear wheel to the same side with respect to each other in the width direction of the traveling body, and the front end portion and the rear end portion of the traveling body. Direction indicator The direction indicators that are paired with respect to each other include a direction indicator that is positioned away from each other in the width direction of the traveling body, and at least between the front wheel and the rear wheel in the traveling body. A pair of auxiliary direction indicators, wherein one of the auxiliary direction indicators that are paired with respect to each other is disposed on one side of the traveling body in the width direction, and the other is in the width direction. The auxiliary direction indicator disposed on the other side of the traveling body, and an indicator operation member to which an operation of blinking each of the direction indicator and the auxiliary direction indicator is input, Based on each of the direction indicator that is paired with respect to each other and the auxiliary direction indicator that is paired with respect to each other, one of the sides on which the traveling body that is traveling in the width direction is bent And an indicator operating member to blink.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle-type construction machine by which the side where the traveling body which is drive | working about the width direction bends | curves can be recognized rapidly and appropriately from any surrounding positions can be provided.

1 is a perspective view schematically showing a vehicle crane according to a first embodiment. It is the perspective view seen from the direction different from FIG. 1 which shows the vehicle type crane which concerns on 1st Embodiment schematically. It is the schematic which looked at the vehicle type crane which concerns on 1st Embodiment from the one side of the width direction of a traveling body. It is a block diagram which shows roughly the structure which controls the action | operation of the front wheel which concerns on 1st Embodiment, a rear wheel, a front side direction indicator, a back side direction indicator, and an auxiliary direction indicator. It is the schematic which shows the state in which only the front wheel is steered in the vehicle type crane which concerns on 1st Embodiment. It is the schematic which shows the state in which the front wheel and the rear wheel are steered to the same side with respect to each other in the width direction of the traveling body in the vehicle type crane according to the first embodiment. It is the schematic which shows the state in which the front wheel and the rear wheel are steered on the opposite side with respect to each other in the width direction of the traveling body in the vehicle type crane according to the first embodiment. It is a circuit diagram showing roughly composition of an electric system which supplies electric energy to a direction indicator concerning a 1st embodiment.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. 1 to 3 are views showing a vehicle crane 1 that is a vehicle construction machine of the present embodiment. FIG. 1 is a perspective view of the vehicle-type crane 1, and FIG. 2 is a perspective view of the vehicle-type crane 1 viewed from a direction different from FIG. 1. As shown in FIGS. 1 to 3, the vehicle crane 1 includes a traveling body 2 and a revolving body 3 provided on the traveling body 2. The turning body 3 can turn with respect to the traveling body 2. In each of FIGS. 1 to 3, the arrow V1 side is a vertically upper side, and the arrow V2 side is a vertically lower side. 1 to 3, the arrow X1 side is the front side of the traveling body 2, and the arrow X2 side is the rear side of the traveling body 2. In each of FIGS. 1 and 2, the direction of the arrow W <b> 1 and the arrow W <b> 2 is the width direction of the traveling body 2. 1 and 2, the arrow W1 side is the left side (one side in the width direction) of the traveling body 2, and the arrow W2 side is the right side (the other side in the width direction) of the traveling body 2. FIG. 3 shows a state in which the vehicle crane 1 is viewed from one side (left side) in the width direction of the traveling body 2.

  The swivel body 3 includes a work machine 5 and an operator cab (cab) 6. In the cab 6, an operation for traveling the traveling body 2 (vehicle crane 1) and an operation for operating the work machine 5 are input. In the present embodiment, the work machine 5 includes a boom 7. At the time of work, the work machine 5 is operated by turning the revolving structure 3 or raising and lowering the boom 7. In the present embodiment, the cab 6 is located on the right side with respect to the boom 7 in the width direction of the revolving structure 3. However, in a certain embodiment, the cab 6 may be located on the left side with respect to the boom 7 in the width direction of the revolving structure 3. When the traveling body 2 is traveling, the width direction of the traveling body 2 (the direction of the arrow W1 and the arrow W2) and the width direction of the revolving body 3 substantially coincide with each other, and the longitudinal direction of the traveling body 2 (the arrow X1). And the direction of the arrow X2) and the front-rear direction of the revolving structure 3 substantially coincide. Moreover, in each of FIG. 1 thru | or FIG. 3, the vehicle type crane 1 is shown in the state at the time of driving | running | working.

  The traveling body 2 is provided with a pair of front wheels 11A1, 11B1 and two pairs of rear wheels 12A1, 12B1, 12A2, 12B2. Rear wheels 12A1, 12B1, 12A2, and 12B2 are located rearward from front wheels 11A1 and 11B1. The rear wheels 12A2 and 12B2 are adjacent to the rear side of the rear wheels 12A1 and 12B1. A distance L1 is provided between the front wheel 11A1 (11B1) and the front-most rear wheel 12A1 (12B1). Further, a distance L2 is provided between the rear wheel 12A1 (12B1) and the rear wheel 12A2 (12B2) that are adjacent to each other in the front-rear direction. The distance (first distance) L1 is larger than the distance (second distance) L2. The front wheels 11 </ b> A <b> 1 and 11 </ b> B <b> 1 that are paired with each other are positioned away from each other in the width direction of the traveling body 2. Further, the rear wheels 12A1 and 12B1 that are paired with each other are positioned away from each other in the width direction of the traveling body 2, and the rear wheels 12A2 and 12B2 that are paired with each other are in the width direction of the traveling body 2. Located away from each other.

  The front wheels 11Ai and 11Bi (i is a natural number equal to or less than α) and the rear wheels 12Aj and 12Bj (j is a natural number equal to or less than β) may be provided in at least a pair. For example, in one embodiment, a pair of front wheels 11Ai and 11Bi and a pair of rear wheels 12Aj and 12Bj are provided. In another embodiment, two pairs of front wheels 11Ai and 11Bi and a pair of rear wheels 12Aj and 12Bj are provided. In still another embodiment, the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are provided in two or more pairs. However, in any case, the front wheels 11Ai and 11Bi that are paired with each other are positioned away from each other in the width direction of the traveling body 2, and the rear wheels 12Aj and 12Bj that are paired with each other are the traveling body 2 Are located away from each other in the width direction.

  When two or more pairs of front wheels are provided, the distance between the most rearward front wheel 11Aα (11Bα) and the foremost rear wheel 12A1 (12B1) is the front wheel adjacent to each other in the front-rear direction ( For example, it is larger than each of the distances between 11Ai and 11Ai + 1), for example, larger than the distance between the front wheels 11Aα-1 and the front wheels 11Aα. When two or more pairs of rear wheels 12Aj and 12Bj are provided, the distance between the frontmost wheel 11Aα (11Bα) on the rearmost side and the rear wheel 12A1 (12B1) on the frontmost side is adjacent to each other in the front-rear direction. It is larger than each of the distances (for example, 12Aj, 12Aj + 1) between the rear wheels to be installed, and is larger than, for example, the distance between the rear wheel 12A1 and the rear wheel 12A2.

  Two pairs of front direction indicators 13A1, 13B1, 13A2, and 13B2 are provided at the front end of the traveling body 2. The front direction indicators 13A1, 13B1, 13A2, and 13B2 are located on the front side with respect to the front wheels 11A1 and 11B1. The front direction indicators 13A1 and 13B1 that are paired with each other are positioned away from each other in the width direction of the traveling body 2, and the front direction indicators 13A2 and 13B2 that are paired with each other are the traveling body 2. Are located away from each other in the width direction. In the present embodiment, forward direction indicators 13A1 and 13B1 are provided on the front end face 41 of the traveling body 2. Further, a front side direction indicator 13A2 is provided at the front end portion of the side surface (side portion) 43A on one side (left side) of the traveling body 2 in the width direction, and the side surface on the other side (right side) of the traveling body 2 in the width direction. A front side direction indicator 13B2 is provided at the front end portion of the (side portion) 43B.

  It should be noted that at least one pair of the front direction indicators 13Am and 13Bm (m is a natural number equal to or less than γ) may be provided at the front end of the traveling body 2. However, in any case, the front side direction indicators 13Am and 13Bm that are paired with each other are located away from each other in the width direction of the traveling body 2. In any case, all the front direction indicators 13Am and 13Bm are located on the front side with respect to the front wheels 11A1 and 11B1 on the most front side.

  A pair of rear direction indicators 15A1 and 15B1 are provided at the rear end of the traveling body 2. The rear direction indicators 15A1 and 15B1 are located on the rear side with respect to the rearmost rear wheels 12A2 and 12B2. The rear side direction indicators 15A1 and 15B1 that are paired with each other are located away from each other in the width direction of the traveling body 2. In this embodiment, rear side direction indicators 15A1 and 15B1 are provided on the rear end face 42 of the traveling body 2.

  Note that at least one pair of the rear direction indicators 15An and 15Bn (n is a natural number equal to or less than η) may be provided at the rear end of the traveling body 2, or two or more pairs may be provided. However, in any case, the rear side direction indicators 15An and 15Bn that are paired with each other are located away from each other in the width direction of the traveling body 2. In any case, all the rear direction indicators 15An and 15Bn are located rearward with respect to the rearmost rear wheels 12Aβ and 12Bβ.

  In the traveling body 2, a pair of auxiliary direction indicators 17A1 and 17B1 are provided between the front wheels 11A1 and 11B1 and the rear wheels 12A1 and 12B1 in the front-rear direction. In the auxiliary direction indicators 17A1 and 17B1 that are paired with each other, one auxiliary direction indicator 17A1 is disposed on the side surface (side portion) 43A on one side (left side) of the traveling body 2 in the width direction, and the other auxiliary direction indicator 17A1. The direction indicator 17B1 is disposed on the side surface (side portion) 43B on the other side (right side) of the traveling body 2 in the width direction. Therefore, the auxiliary direction indicators 17A1 and 17B1 that are paired with each other are located away from each other in the width direction of the traveling body 2.

  The auxiliary direction indicators 17Av and 17Bv (v is a natural number equal to or less than ε) need only be provided in at least one pair in the traveling body 2, and may be provided in two or more pairs. However, in any case, all the auxiliary direction indicators 17Av and 17Bv are arranged between the front wheels 11Aα and 11Bα on the most rear side and the rear wheels 12A1 and 12B1 on the most front side in the front-rear direction of the traveling body 2. The In either case, one of the auxiliary direction indicators 17Av and 17Bv paired with each other (17Av) is disposed on the side surface (side portion) 43A on one side (left side) of the traveling body 2 in the width direction. The other (17Bv) is arranged on the side surface (side portion) 43B on the other side (right side) of the traveling body 2 in the width direction.

  FIG. 4 is a diagram showing a configuration for controlling the operations of the front wheels 11Ai and 11Bi, the rear wheels 12Aj and 12Bj, the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and the auxiliary direction indicators 17Av and 17Bv. is there. As shown in FIG. 4, the control unit 21 is provided in the vehicle crane 1. The control unit 21 includes a processor or an integrated circuit including a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array), and a storage medium, and performs arithmetic processing, control, and the like. . Further, the vehicle crane 1 is provided with a steering wheel 22 and a steering mode switching button 23 in the cab 6. Further, the vehicle crane 1 is provided with a hydraulic circuit 25 that supplies oil to actuators (not shown) that change the directions of the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj. The control unit 21 controls the operation of the hydraulic circuit 25 based on operation inputs from the steering 22 and the steering mode switching button 23. By controlling the operation of the hydraulic circuit 25, the supply of oil to the actuators that change the directions of the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj is controlled, and the operation of the actuators is controlled. By controlling the operation of the corresponding actuator, the orientations of the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are adjusted, and the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are steered.

  In the present embodiment, the control unit 21 can steer only the front wheels 11Ai and 11Bi based on the operation in the cab 6 as shown in FIG. At this time, the rear wheels 12Aj and 12Bj are not steered by the operation in the cab 6. Further, based on the operation of traveling the traveling body 2 in the cab 6, the control unit 21 moves the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj relative to each other in the width direction of the traveling body 2 as shown in FIG. It is possible to steer to the same side (ie crab steer). At this time, for example, both the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are steered to one side (left side) in the width direction of the traveling body 2. Furthermore, the control unit 21 moves the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj with respect to each other in the width direction of the traveling body 2 based on the operation of traveling the traveling body 2 in the cab 6 as shown in FIG. It is possible to steer to the other side. At this time, for example, the front wheels 11Ai and 11Bi are steered to one side (left side) in the width direction of the traveling body 2, while the rear wheels 12Aj and 12Bj are directed to the other side (right side) in the width direction of the traveling body 2. Steered. In the state shown in each of FIGS. 5 to 7, the traveling body 2 that is traveling bends to the left side (one side) in the width direction (that is, turns left).

  As shown in FIG. 4, the cab 6 is provided with a direction indicating lever (indicator operating member) 26 and a hazard button 27. In the direction indicating lever 26, an operation indicating the side on which the traveling body 2 traveling in the width direction is bent is input. That is, in the direction indicating lever 26, an operation of blinking each of the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and the auxiliary direction indicators 17Av and 17Bv during driving is input. In the hazard button 27, an operation for causing the front side direction indicators 13Am and 13Bm, the rear side direction indicators 15An and 15Bn, and the auxiliary direction indicators 17Av and 17Bv to blink rapidly is input. The vehicle crane 1 is also provided with an electric system 28 that supplies electric energy to the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and the auxiliary direction indicators 17Av and 17Bv. The control unit 21 controls the operation of the electric system 28 based on operation inputs at the direction indicating lever 26 and the hazard button 27. By controlling the operation of the electric system 28, the supply of electric energy to the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and the auxiliary direction indicators 17Av and 17Bv is controlled. The operations of the indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv are controlled. That is, the lighting states of the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv are controlled.

  FIG. 8 is a diagram showing a configuration of an electric system 28 that supplies electric energy to the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv. As shown in FIG. 8, the vehicle type crane 1 includes a battery 31. The battery 31 outputs a predetermined voltage V0. The electrical system 28 includes switches 32 and 33 and a flasher relay circuit 35. For example, when traveling, a vehicle power operation unit (not shown) such as a vehicle power button is turned on by an operation in the cab 6. In the ON state of the vehicle power supply operation unit, the switch 32 is in a closed state (ON state), and the contact point E1 and the contact point E2 are electrically connected by the switch 33. For this reason, the electrical energy from the battery 31 is supplied to the flasher relay circuit 35. Further, when the switch 32 is turned on, an electrical system other than the electrical system 28 of the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv (for example, an electrical system that operates the display panel of the cab 6). Electric energy from the battery 31 is supplied. By supplying electric energy to the flasher relay circuit 35, the flasher relay circuit 35 generates a predetermined voltage (predetermined potential difference) V0 between the B terminal and the E terminal. The flasher relay circuit 35 converts electric energy from the battery 31 and outputs the converted electric energy. By outputting electrical energy from the flasher relay circuit 35, the flasher relay circuit 35 has a voltage (potential difference) between a state in which a predetermined voltage V0 is generated between the L terminal and the E terminal and a voltage between the L terminal and the E terminal. ) Does not occur periodically.

  The electrical system 28 includes a switch 36 and switches 37A and 37B. For example, when the vehicle power supply operation unit (vehicle power supply button) is in an ON state during traveling or the like, the switches 37A and 37B are in an open state (OFF state). Further, in a state where the traveling body 2 travels straight without bending in the width direction, the direction indicating lever (indicator operating member) 26 is positioned at the neutral position. In the state where the direction indicating lever 26 is positioned at the neutral position, the contact E4 is not connected to any of the contacts E5 and E6 in the switch 36. Therefore, the electrical energy output from the flasher relay circuit 35 is not supplied to any of the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv, and the front side direction indicators 13Am and 13Bm and the rear side direction indicator None of the devices 15An and 15Bn and the auxiliary direction indicators 17Av and 17Bv are lit.

  When the traveling body 2 that is traveling bends to one side (left side) in the width direction (when turning left), the direction indicating lever 26 is moved from the neutral position to the first operating position by an operation in the cab 6. Let As the direction indicating lever 26 moves to the first operating position, the contact E4 is electrically connected to the contact E5 in the switch 36. As a result, the electrical energy output from the flasher relay circuit 35 is supplied to the direction indicators 13Am, 15An, and 17Av, and the front side direction indicator 13Am, the rear side direction indicator 15An, and the auxiliary direction indicator 17Av periodically. Flashes. At this time, since the switch 37B is in the open state, no electrical energy is supplied to the direction indicators 13Bm, 15Bn, and 17Bv, and the direction indicators 13Bm, 15Bn, and 17Bv are not lit. On the other hand, when the traveling body 2 that is traveling bends to the other side (right side) in the width direction (when it turns right), the direction indicating lever 26 is moved from the neutral position to the second operating position by an operation in the cab 6. Move to. As the direction indicating lever 26 moves to the second operating position, the contact E4 is electrically connected to the contact E6 in the switch 36. Thereby, the electrical energy output from the flasher relay circuit 35 is supplied to the direction indicators 13Bm, 15Bn, and 17Bv, and the front side direction indicator 13Bm, the rear side direction indicator 15Bn, and the auxiliary direction indicator 17Bv periodically. Flashes. At this time, since the switch 37A is in the open state, no electrical energy is supplied to the direction indicators 13Am, 15An, and 17Av, and the direction indicators 13Am, 15An, and 17Av are not lit.

  Since the direction indicators 13Am, 13Bm, 15Am, 15Bm, 17Av, and 17Bv are actuated as described above, the front side direction indicators 13Am and 13Bm that are paired with each other are operated by the direction indication lever 26. Based on the above, only one (13Am or 13Bm) on the side where the traveling body 2 bends in the width direction blinks. For example, in the front direction indicators 13A1 and 13B1 that are paired with each other, when the traveling body 2 bends to the left side (that is, when the direction indicating lever 26 is located at the first operating position), the front direction Only the indicator 13A1 blinks, and when the traveling body 2 turns to the right (that is, when the direction indicator lever 26 is located at the second operating position), only the front side indicator 13B1 blinks. Similarly, in each of the rear side direction indicators 15An and 15Bn paired with each other, only one of the sides (15An or 15Bn) on which the traveling body 2 bends in the width direction is determined based on the operation input at the direction indication lever 26. Flashes. In each of the auxiliary direction indicators 17Av and 17Bv that are paired with each other, only one (17Av or 17Bv) on the side where the traveling body 2 bends in the width direction is blinked based on the operation input at the direction indication lever 26. To do.

  In addition, the direction indicators 13Am, 15An, and 17Av are electrically arranged in parallel with each other, and the direction indicators 13Bm, 15Bn, and 17Bv are electrically arranged in parallel with each other. Therefore, in each of the front direction indicators 13Am and 13Bm that are paired with each other, the other front direction indicators (the other in 13Am and 13Bm), the rear direction indicators 15An and 15Bn, and the auxiliary direction indicator Regardless of whether or not the devices 17Av and 17Bv are blinking, only one side (13Am or 13Bm) on the side where the traveling body 2 is bent in the width direction blinks. Similarly, in each of the rear direction indicators 15An and 15Bn paired with each other, the front direction indicators 13Am and 13Bm, the other rear direction indicators (others of 15An and 15Bn), and the auxiliary direction indicator 17Av , 17Bv, regardless of the presence or absence of blinking, only one (15An or 15Bn) on the side where the traveling body 2 bends in the width direction blinks. In each of the auxiliary direction indicators 17Av and 17Bv paired with each other, the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and other auxiliary direction indicators (others of 17Av and 17Bv) Regardless of the presence or absence of blinking, only one (17AV or 17Bv) on the side where the traveling body 2 bends in the width direction blinks. That is, the auxiliary direction indicators 17Av and 17Bv that are paired with each other include the front direction indicators 13Am and 13Bm, the rear direction indicators 15An and 15Bn, and other auxiliary direction indicators (others of 17Av and 17Bv). Independently, only one (17Av or 17Bv) on the side where the traveling body 2 bends in the width direction blinks.

  In addition, the turn indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv may be lit in an emergency state when the vehicle power operation unit such as the vehicle power button is in an OFF state. At this time, the operation input is performed by the hazard button 27, whereby the contact E <b> 1 and the contact E <b> 3 are electrically connected by the switch 33. For this reason, the electrical energy from the battery 31 is supplied to the flasher relay circuit 35. At this time, since the switch 32 is in the OFF state, an electrical system other than the electrical system 28 of the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, and 17Bv (for example, an electrical system that operates the display panel of the cab 6). Electric energy from the battery 31 is not supplied. By supplying electric energy to the flasher relay circuit 35, the electric energy from the battery 31 is converted by the flasher relay circuit 35 as described above, and the converted electric energy is output from the flasher relay circuit 35. Further, when an operation input is performed with the hazard button 27, the switches 37A and 37B are turned on (closed) in conjunction with the switching of the switch 33. Thereby, electric energy is supplied from the flasher relay circuit 35 to all the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, 17Bv, and all the direction indicators 13Am, 13Bm, 15An, 15Bn, 17Av, 17Bv flash. (Emergency lights up).

  Next, the operation and effect of this embodiment will be described. As described above, in the vehicle type crane 1 of this embodiment, when the traveling body 2 traveling in the width direction bends, the front direction indicator that is paired with each other by the operation of the direction indicating lever 26. In each of 13Am and 13Bm and the rear side direction indicators 15An and 15Bn paired with each other, only one of the sides on which the traveling body 2 bends in the width direction (13Am or 13Bm; 15An or 15Bn) blinks. In the present embodiment, at least a pair of auxiliary direction indicators 17Av, 17Bv (17A1, 17B1) are provided between the front wheels 11A1, 11B1 and the rear wheels 12A1, 12B1 of the traveling body 2 in the front-rear direction. In each of the auxiliary direction indicators 17Av and 17Bv paired with each other, only one (17Av or 17Bv) on the side where the traveling body 2 bends in the width direction is blinked based on the operation input at the direction indication lever 26. To do. For example, in the range where it is difficult to visually recognize both the front end portion and the rear end portion of the traveling body 2 such as the range between the front wheels 11A1, 11B1 and the rear wheels 12A1, 12B1 in the front-rear direction, the front side direction indicators 13Am, 13Bm and the rear It is difficult to grasp the blinking state of both the side direction indicators 15An and 15Bn. In the present embodiment, the auxiliary direction indicators 17Av and 17Bv are provided as described above, so that the auxiliary direction is provided even in a range where it is difficult to visually recognize both the front end portion and the rear end portion of the traveling body 2 around the traveling body 2. The blinking state of the indicators 17Av and 17Bv can be visually recognized. And based on the blinking state (operation state) of auxiliary direction indicators 17Av and 17Bv, it becomes possible to grasp the side on which the traveling body 2 traveling in the width direction is bent. Therefore, in this embodiment, the side on which the traveling body 2 traveling in the width direction is bent is recognized quickly and appropriately from any position around the traveling body 2.

  In particular, in a vehicle-type construction machine such as the vehicle-type crane 1, the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are steered to the same side with respect to each other in the width direction of the traveling body 2 (that is, crab steered). )Sometimes. In this case, the traveling body 2 rapidly moves to the side where the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are steered in the width direction. In this embodiment, the side on which the traveling body 2 traveling in the width direction bends quickly is based on the blinking state (operating state) of the auxiliary direction indicators 17Av, 17Bv in addition to the direction indicators 13Am, 13Bm, 15An, 15Bn. Therefore, even when the front wheels 11Ai and 11Bi and the rear wheels 12Aj and 12Bj are crab steered, the side on which the traveling body 2 traveling in the width direction around the traveling body 2 is bent is recognized quickly and appropriately. The Thereby, the safety | security around the vehicle type crane 1 (running body 2) is ensured appropriately.

  Further, in the present embodiment, the auxiliary direction indicators 17Av and 17Bv are arranged between the rearmost front wheels 11Aα and 11Bα and the frontmost rear wheels 12A1 and 12B1 in the front-rear direction of the traveling body 2. For this reason, even if at least one of the front wheels 11Ai, 11Bi and the rear wheels 12Aj, 12Bj is provided in two or more pairs and the traveling body 2 is enlarged (that is, even if the dimension of the traveling body 2 in the front-rear direction is increased), Around the traveling body 2, one of the direction indicators 13Am, 13Bm, 15An, 15Bn and the auxiliary direction indicators 17Av, 17Bv can be visually recognized. Therefore, even if the traveling body 2 (vehicle crane 1) is increased in size, the side on which the traveling body 2 traveling in the width direction around the traveling body 2 is bent is quickly and appropriately recognized.

  Further, each of the auxiliary direction indicators 17Av, 17Bv paired with each other is independent of the direction indicators 13Am, 13Bm, 15An, 15Bn and other auxiliary direction indicators (others of 17Av, 17Bv) in the width direction. Only one side (17Av or 17Bv) on the side where the traveling body 2 bends blinks. Therefore, even if a failure or the like occurs in the direction indicators 13Am, 13Bm, 15An, and 15Bn, the auxiliary direction indicators 17Av and 17Bv are appropriate as long as the flasher relay circuit 35 and the switches 32, 33, and 36 are appropriately operated. Is activated (flashes properly). Therefore, even if a failure or the like occurs in the direction indicators 13Am, 13Bm, 15An, 15Bn, the auxiliary direction indicators 17Av, 17Bv can be operated (flashing) to make an emergency travel to a repair shop or the like.

(Modification)
In the above-described embodiment and the like, the vehicle type crane 1 is described as an example of the vehicle type construction machine. However, the above-described configuration can be applied to a vehicle type construction machine other than the vehicle type crane 1.

  In the above-described embodiment or the like, the vehicle-type construction machine (1) includes a traveling body (2), a revolving body (3) provided on the traveling body (2) so as to be able to swivel with respect to the traveling body (2), Is provided. The traveling body (2) includes at least a pair of front wheels (11Ai, 11Bi) and at least a pair of rear wheels (12Aj, 12Bj) provided away from the front wheels (11Ai, 11Bi) on the rear side (X2). The swivel body (3) includes a work machine (5), and a cab (6) into which an operation for running the traveling body (2) and an operation for operating the work machine (5) are input. In the vehicle-type construction machine (1), in the operation in the cab (6), only the front wheels (11Ai, 11Bi) are steered, and the front wheels (11Ai, 11Bi) and the rear wheels (12Aj, 12Bj) are steered to the opposite side with respect to each other, and the front wheels (11Ai, 11Bi) and rear wheels (12Aj, 12Bj) can be steered to the same side relative to each other. At least one pair of direction indicators (13Am, 13Bm, 15An, 15Bn) is provided on each of the front end portion and the rear end portion of the traveling body (2). The direction indicators (13Am, 13Bm; 15An, 15Bn) that are paired with each other are located away from each other in the width direction (W1, W2) of the traveling body (2). In the traveling body (2), at least a pair of auxiliary direction indicators (17Av, 17Bv) are provided between the front wheels (11Ai, 11Bi) and the rear wheels (12Aj, 12Bj). One of the auxiliary direction indicators (17Av, 17Bv) paired with each other (17Av) is arranged on the side (43A) on one side (W1) of the traveling body (2) in the width direction (W1, W2). The other (17Bv) is disposed on the side (43B) on the other side (W2) of the traveling body (2) in the width direction (W1, W2). The vehicle type crane (1) has an indicator operation member (26) to which an operation for blinking each of the direction indicator (13Am, 13Bm, 15An, 15Bn) and the auxiliary direction indicator (17Av, 17Bv) is input. Provided. Based on the operation input at the indicator operating member (26), the direction indicators (13Am, 13Bm; 15An, 15Bn) paired with each other and the auxiliary direction indicators (17Av; 17Bv) paired with each other In each case, only one of the sides (W1; W2) on which the traveling body (2) traveling in the width direction (W1, W2) bends blinks.

  The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle type crane, 2 ... Running body, 3 ... Turning body, 5 ... Working machine, 6 ... Driver's cab, 11Ai, 11Bi ... Front wheel, 12Aj, 12Bj ... Rear wheel, 13Am, 13Bm ... Front direction indicator, 15An , 15Bn: Rear direction indicator, 17Av, 17Bv: Auxiliary direction indicator.

Claims (3)

A traveling body comprising at least a pair of front wheels and at least a pair of rear wheels provided away from the front wheels on the rear side;
A revolving body provided on the traveling body so as to be able to swivel with respect to the traveling body, and a work machine, and a driver's cab to which an operation for running the traveling body and an operation for operating the work machine are input. And in the operation in the driver's cab, steering only the front wheel, steering the front wheel and the rear wheel in opposite directions with respect to the width direction of the traveling body, and A revolving body capable of steering the front wheel and the rear wheel on the same side with respect to each other in the width direction;
At least one pair of direction indicators provided at each of the front end portion and the rear end portion of the traveling body, wherein the direction indicators paired with each other are separated from each other in the width direction of the traveling body. A direction indicator located;
In the traveling body, at least one pair of auxiliary direction indicators provided between the front wheel and the rear wheel, wherein one of the auxiliary direction indicators paired with each other is one of the traveling bodies in the width direction. The auxiliary direction indicator that is disposed on the side portion on the side and the other is disposed on the other side portion of the traveling body in the width direction;
An indicator operation member to which an operation for blinking each of the direction indicator and the auxiliary direction indicator is input, and based on the operation input, the direction indicator that is paired with each other and the pair with respect to each other In each of the auxiliary direction indicators, an indicator operation member that blinks only one of the sides on which the traveling body running in the width direction is bent,
A vehicle-type construction machine comprising: At least one of the front wheel and the rear wheel is provided in two or more pairs,
The distance between the front wheel on the most rear side and the rear wheel on the most front side is the distance between the front wheels adjacent to each other in the front-rear direction and the rear adjacent to each other in the front-rear direction. Larger than each of the distances between the rings,
The auxiliary direction indicator is located between the front wheel on the most rear side and the rear wheel on the most front side;
The vehicle type construction machine according to claim 1.   In each of the auxiliary direction indicators that are paired with respect to each other, based on the operation input at the indicator operation member, the vehicle is traveling in the width direction regardless of whether the direction indicator flashes or not. The vehicle-type construction machine according to claim 1, wherein only the one of the sides on which the traveling body is bent blinks.