JP6940460B2 - Work machine - Google Patents

Description

The present invention relates to work machines such as hydraulic excavators, wheel loaders, forklifts, tractors, and combines used at various work sites such as civil engineering, forestry, demolition, underground work, transportation work, and agricultural work.

For example, as a work machine such as a hydraulic excavator, a light emitting sheet (warning light) equipped with a light emitting element is attached to a counterweight in order to call attention to people around when excavating or dismantling work. Is known (Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-268358

In the case of the technique described in Patent Document 1, since a warning light (light emitting sheet) is attached to the counterweight, the warning light may be difficult to see depending on the work place of a person around the work machine. That is, the warning light may be visible only behind the counterweight to which the warning light is attached.

An object of the present invention is to provide a work machine capable of improving the visibility of a warning light to people around the work machine.

The work machine of the present invention has a self-propellable vehicle body provided with a work device, a driver's seat provided on the vehicle body, a support column erected on the vehicle body, and a driver's seat provided on the support column from above. In a work machine provided with a canopy formed by a covering roof, a warning light is provided on the support column of the canopy so as to surround the outer peripheral surface of the support column, and the warning light covers the outer peripheral surface of the support column. A tubular main body that is attached by surrounding the main body and a light emitting member that is provided in the main body and emits light when power is supplied are provided, and a cushion member is provided between the support column and the main body. There is.

According to the present invention, since the warning light is provided on the support of the canopy so as to surround the outer peripheral surface of the support, the warning light can be easily visually recognized from the periphery of the work machine. As a result, the visibility of the warning light around the work machine can be improved.

It is a left side view which shows the hydraulic excavator by embodiment. It is a front view which looked at the hydraulic excavator with the work apparatus removed from the left side of FIG. It is an enlarged view of the part (III) in FIG. It is an arrow view view from the direction of arrow (IV) in FIG. It is an enlarged view which shows a support and a warning light. It is an enlarged view which shows a warning light. It is sectional drawing seen from the direction of arrow VII-VII in FIG. It is sectional drawing seen from the same direction as FIG. 7 which shows the state in the process of attaching a warning light to a support column. It is a perspective view which shows the state which the main body part of a warning light is opened. It is a perspective view which shows a part of the main body part of the warning light by the 1st modification. It is sectional drawing which shows the support and the warning light by the 2nd modification.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, taking as an example a case where the embodiment of the present invention is applied to a hydraulic excavator as a typical example of a work machine.

1 to 9 show embodiments. In FIG. 1, the hydraulic excavator 1 as a work machine is widely used at work sites such as civil engineering, forestry, demolition, and underground construction. The hydraulic excavator 1 of the embodiment is configured as a small hydraulic excavator (mini excavator, small hydraulic excavator) suitable for work in a narrow work site such as a street, for example, with a machine weight of about 1 to 6 tons. Has been done. Further, the hydraulic excavator 1 of the embodiment is configured as a canopy specification hydraulic excavator 1.

The hydraulic excavator 1 includes a self-propelled crawler type lower traveling body 2, an upper swivel body 4 mounted on the lower traveling body 2 so as to be swivelable via a swivel device 3, and an upper swivel body 4 in the front-rear direction. It is configured to include an offset boom type working device 5 provided on the front side so as to be swingable. In this case, the lower traveling body 2 and the upper turning body 4 constitute the vehicle body of the hydraulic excavator 1.

The lower traveling body 2 is, for example, a crawler belt 2A formed by attaching a plurality of shoes to a track link formed in an endless shape, and left and right to drive (self-propell) the hydraulic excavator 1 by orbiting the crawler belt 2A. It is configured to include a traveling hydraulic motor (not shown). The swivel device 3 is provided between the lower traveling body 2 and the upper swivel body 4 (swivel frame 6 described later), and has a swivel bearing 3A that rotatably supports the upper swivel body 4 and a swivel center of the swivel bearing 3A. A swivel hydraulic motor (not shown) that swivels and drives the upper swivel body 4 is included.

The working device 5, which is also called a front device, is provided on the front side of the upper swivel body 4. The work device 5 includes a lower boom 5A, an upper boom 5B, an arm stay 5C, an arm 5D, a bucket 5E as a work tool, a link rod 5F, and a boom cylinder 5G, an offset cylinder 5H, an arm cylinder 5I, and a work tool cylinder for driving these. It is configured to include the bucket cylinder 5J of the above. The offset boom type working device 5 expands and contracts the offset cylinder 5H to swing the upper boom 5B to the left and right with respect to the lower boom 5A, thereby moving the arm 5D to the left and right via the arm stay 5C. Can be translated (offset). The working device 5 is configured to move the lower boom 5A to the maximum position and to fit in the virtual circle of the turning radius when the upper swivel body 4 swivels in a state where the arm 5D is folded.

The upper swivel body 4 swivels on the lower traveling body 2 by driving the swivel hydraulic motor of the swivel device 3. The upper swivel body 4 includes a swivel frame 6, a counterweight 7, an engine 8, a floor member 9, a driver's seat 12, a canopy 15, a warning light 24, and the like.

The swivel frame 6 serves as a support structure (base frame) for the upper swivel body 4. The swivel frame 6 is mounted on the lower traveling body 2 via the swivel device 3. A working device 5 is attached to the front side of the swivel frame 6 so as to be able to move up and down. A counterweight 7 is attached to the rear side of the swivel frame 6. Then, on the swivel frame 6, the engine 8, the hydraulic pump (not shown), the heat exchanger (not shown), and the control valve device (not shown) are located on the front side (front side) of the counter weight 7. Various devices such as are installed.

The counterweight 7 is attached to the rear side of the swivel frame 6 in order to balance the weight with the working device 5. The counterweight 7 is formed as an arc-shaped heavy object whose center in the left and right directions protrudes rearward while extending in the left and right directions. As a result, the rear surface 7A of the counterweight 7 is formed as an arc surface that substantially fits within the virtual circle of the turning radius.

The engine 8 is located on the front side of the counterweight 7 and is provided on the rear side of the swivel frame 6 (see FIG. 1). The engine 8 is mounted on the swivel frame 6 in a horizontal position extending in the left-right direction. The engine 8 is composed of an internal combustion engine such as a diesel engine. A hydraulic pump is attached to the output side of the engine 8.

By driving a hydraulic pump, the engine 8 uses the hydraulic oil stored in the hydraulic oil tank (not shown) as pressure oil to hydraulic actuators (left and right traveling hydraulic motors, turning hydraulic motors, boom cylinder 5G). , Offset cylinder 5H, arm cylinder 5I, bucket cylinder 5J). The drive source (power source) for driving the hydraulic pump may be composed of the engine 8 alone, which is an internal combustion engine, or may be composed of, for example, the engine and the electric motor, or the electric motor alone.

The floor member 9 is arranged on the upper side of the swivel frame 6 including the upper side of the engine 8, and is provided so as to be tiltable with respect to the swivel frame 6. The floor member 9 is integrally formed including the driver's seat pedestal 10 and the footrest plate 11. A floor support portion 9A is provided between the front end of the floor member 9 and the swivel frame 6. The floor member 9 is supported so as to be tiltable upward and downward (obliquely upward) with the floor support portion 9A as a fulcrum.

The driver's seat pedestal 10 is provided on the swivel frame 6 so as to cover the upper side of the engine 8. The driver's seat pedestal 10 includes a seat pedestal 10A to which the driver's seat 12 is mounted, and a canopy mounting plate 10B projecting rearward from the seat pedestal 10A. The right rear strut 17 and the left rear strut 18 of the canopy 15 are fixed to the canopy mounting plate 10B of the driver's seat pedestal 10.

The footrest plate 11 is arranged on the front side of the driver's seat pedestal 10. The footrest plate 11 forms a footrest portion for an operator seated in the driver's seat 12. The footrest plate 11 constitutes a floor member 9 together with the driver's seat pedestal 10, and the footrest plate 11 and the driver's seat pedestal 10 are configured to be tiltable upward and downward with the floor support portion 9A as a fulcrum. Has been done. Further, the left side of the footrest plate 11 is an entrance / exit for the operator with respect to the driver's seat 12.

The driver's seat 12 is provided on the upper swivel body 4 constituting the vehicle body. Specifically, the driver's seat 12 is mounted on the seat pedestal 10A of the driver's seat pedestal 10 constituting the floor member 9. The driver's seat 12 is seated (seat) when the operator who gets on the floor member 9 operates the hydraulic excavator 1. Therefore, around the driver's seat 12, left and right traveling lever / pedal operating devices 13 and 13 for operating the hydraulic excavator 1 and left and right working lever operating devices 14 and 14 are provided. There is. By operating the traveling lever / pedal operating devices 13 and 13 and the working lever operating devices 14 and 14, the operator operates the traveling operation by the lower traveling body 2, the turning operation of the upper rotating body 4, and the excavation work by the working device 5. Etc. can be performed.

The canopy 15 is provided so as to cover the upper part of the driver's seat 12. The canopy 15 is arranged on the left side of the work device 5 (lower boom 5A) and covers the right side and the upper side of the driver's seat 12. The canopy 15 is provided on the columns 16, 17, 18 erected on the upper swing body 4 (vehicle body) and the columns 16, 17, 18 and covers the driver's seat 12 from above. 20B) is formed. That is, the canopy 15 is configured as a so-called three-pillar type canopy including a roof 20 that covers the driver's seat 12 from above and three pillars 16, 17, and 18 formed of a pipe material.

In this case, the roof 20 includes a right side surface portion 20A that covers the right side of the driver's seat 12 and an upper surface portion 20B that covers the upper side of the driver's seat 12. Further, the three columns 16, 17, and 18 are a right front column 16 located on the right front side of the driver's seat 12, a right rear column 17 located on the right rear side of the driver's seat 12, and a rear side of the driver's seat 12 ( It is provided with a left rear support column 18 located on the back side of the driver's seat 12 (rear side of the backrest 12A).

Here, of the three columns 16, 17, and 18 constituting the canopy 15, the lower end of the right front column 16 is attached to the right front portion of the footrest plate 11. Further, the lower ends of the right rear support column 17 and the left rear support column 18 are attached to the canopy mounting plate 10B of the driver's seat pedestal 10. As shown in FIG. 4, the right rear support column 17 rises upward from the canopy mounting plate 10B and is curved to the left on the upper end side. The upper end side of the right rear support column 17 is connected to the upper end side of the right front support column 16 via a U-shaped connecting portion 19 in a plan view. The connecting portion 19 extends from the upper end side of the right rear strut 17 to the left side to a position where it passes through the left rear strut 18, and is forward from the left end side (left side of the left rear strut 18) of the rear connecting portion 19A. The left connecting portion 19B extending toward the left connecting portion 19B and the front connecting portion 19C extending from the front end side of the left connecting portion 19B to the right side and connected to the upper end side of the right front support column 16 are provided.

As described above, the right rear support column 17 and the right front support column 16 are formed of one pipe material via the U-shaped connecting portion 19 in a plan view. A mirror 21 for looking behind the counterweight 7 is attached between the right rear strut 17 and the left rear strut 18 of the connecting portion 19, that is, in the middle of the rear connecting portion 19A. Further, a warning light 24, which will be described later, is attached to the upper end side of the left rear column 18 among the three columns 16, 17, and 18. The canopy 15 is not limited to a three-pillar canopy in which three pillars extend upward and downward (erected), and two pillars extend upward and downward (erected). It may be a two-pillar canopy or a four-pillar canopy in which four pillars extend upward and downward (erected).

As shown in FIG. 2, a guard member 22 is fixed to the right front support column 16. The guard member 22 is made of a pipe material or the like bent in a U shape, and extends from the right front support column 16 in the left and right directions. The guard member 22 protects the driver's seat 12 and the like from the front. A lighting device 23 is attached to the right end side of the guard member 22.

Next, a pillar-integrated warning light 24 (pillar-integrated warning light) attached to the left rear support column 18 of the canopy 15 will be described.

A warning light 24 is provided on the support of the canopy 15, more specifically, the left rear support 18 located directly behind (rear) the driver's seat 12 so as to surround the outer peripheral surface of the left rear support 18. The warning light 24 is a light emitting unit that emits light to call attention to the surroundings of the hydraulic excavator 1 (vehicle body). As shown in FIGS. 5 to 9, the warning light 24 has a cylindrical main body 25 that is attached so as to surround the outer peripheral surface of the left rear support column 18, and a light emitting light that is provided in the main body 25 and emits light when power is supplied. It includes a member 26. Further, the warning light 24 is provided with a cushion member 28 between the left rear support column 18 and the main body portion 25. The cushion member 28 is elastically deformed between the inner peripheral surface of the main body 25 and the outer peripheral surface of the left rear support column 18, for example.

The main body 25 is composed of a plurality of divided bodies 25A and 25B which are divided in the circumferential direction and connected via a hinge 25C. The plurality of divided bodies 25A and 25B are attached to the outer peripheral surface of the left rear strut 18 by the fastening member 27 in a state where the left rear strut 18 is sandwiched from the outer peripheral side with the hinge 25C as a fulcrum. As shown in FIGS. 7 and 8, in the main body 25, a plurality of (two) divided bodies 25A and 25B sandwich the left rear strut 18 from the outer peripheral side with the hinge 25C as a fulcrum, and the left rear strut 18 is sandwiched. The cross section in the direction orthogonal to the length direction of is formed in a C shape. The fastening member 27 fastens the main body 25 composed of the plurality of divided bodies 25A and 25B to the left rear support column 18, and is composed of, for example, a clip band or a clamp.

Here, the divided bodies 25A and 25B are respectively configured as hollow cases, and the inner side surface portions 25A1, 25B1 having a semi-arc surface shape (curved plate shape) and the outer surface portions 25A2 having a semi-arc surface shape (curved plate shape). 25B2, U-shaped upper surface portions 25A3, 25B3, U-shaped plate-shaped lower surface portions 25A4, 25B4, rectangular plate-shaped one side surface portions 25A5, 25B5, and rectangular plate-shaped other side surface portions 25A6, 25B6. It has. The inner side surface portions 25A1, 25B1 are in close contact with the left rear support column 18 via the cushion member 28. The outer side surface portions 25A2, 25B2 are located outside the inner side surface portions 25A1,25B1 in the radial direction and face the inner side surface portions 25A1,25B1 in the radial direction.

The upper surface portions 25A3 and 25B3 connect the upper end edges of the inner side surface portions 25A1,25B1 and the upper end edges of the outer surface portions 25A2 and 25B2. The lower surface portions 25A4 and 25B4 connect the lower end edges of the inner side surface portions 25A1,25B1 and the lower end edges of the outer surface portions 25A2 and 25B2. The one side surface portions 25A5 and 25B5 connect one end edge of the inner side surface portions 25A1,25B1 in the circumferential direction and one end edge of the outer side surface portions 25A2, 25B2 in the circumferential direction. The other side surface portions 25A6, 25B6 connect the other end edge of the inner side surface portions 25A1,25B1 in the circumferential direction and the other end edge of the outer side surface portions 25A2, 25B2 in the circumferential direction. Then, one side surface portion 25A5 of one split body 25A and the other side surface portion 25B6 of the other split body 25B are connected via a hinge 25C.

The divided bodies 25A and 25B are configured as, for example, a colorless transparent plastic case (synthetic resin case) having a substantially semi-cylindrical shape and extending upward and downward, or a colored transparent plastic case (synthetic resin case) such as green, yellow, orange, or red. More specifically, at least the outer surface portions 25A2 and 25B2 of the divided bodies 25A and 25B are colorless and transparent or colored transparent. A light emitting member 26 that emits light when electric power is supplied is arranged inside the divided bodies 25A and 25B made of a plastic case. The warning light 24 may emit one or a plurality of predetermined colors depending on the work site, such as green, yellow, orange, and red. In this case, a light emitting element 26B such as an LED (light emitting diode) that emits light of the predetermined color may be used, or the divided bodies 25A and 25B of the transmissive plastic case of the predetermined color may be used.

The light emitting member 26 includes a substrate 26A and a light emitting element 26B supported by the substrate 26A. The substrate 26A is fixed to the inner side surface portions 25A1,25B1 of the divided bodies 25A and 25B by screwing or adhesively. As the light emitting element 26B, for example, an LED can be used. In the embodiment, the light emitting member 26 is a light emitting element unit (LED unit) in which a plurality of (five) light emitting elements 26B are assembled in a row in the upper and lower directions of the substrate 26A, in the circumferential direction of the left rear support column 18. A total of 8 sets are arranged at equal intervals (every 45 °). The configuration of the light emitting member 26 is not limited to such a configuration, and for example, a total of four sets of light emitting element units are arranged 90 ° apart in the circumferential direction to output the light required for the warning light 24. As long as the configuration is possible, various configurations can be adopted.

The main body 25 is composed of two divided bodies 25A and 25B in which the light emitting member 26 is arranged. The main body 25 is attached so as to be wound around the left rear strut 18 of the canopy 15. In this case, as shown in FIG. 8, the main body 25 is opened from the center by using the hinge 25C, that is, the split bodies 25A and 25B are opened by using the hinge 25C as a fulcrum, so that the main body 25 is opened by the canopy 15. It is possible to wrap it around the left rear strut 18.

Then, with the main body 25 wound around the left rear strut 18 of the canopy 15, annular fastening members 27 such as clip bands or clamps are attached to both upper and lower ends (upper and lower ends) of the main body 25. It is installed. The fastening member 27 is for fastening the main body portion 25 to the left rear strut 18, and more specifically, the inner side surface portions 25A1, 25B1 of the divided bodies 25A and 25B are fastened to the left rear strut 18 (via the cushion member 28). It is to be in close contact with. That is, by winding the fastening member 27 around the outer peripheral surface of the main body 25, the main body 25 is prevented from opening (the inner diameter dimension of the main body 25 is widened). This prevents the main body 25 from being displaced from the mounting position of the left rear strut 18 (the main body 25 falls off from the left rear strut 18).

The cushion member 28 is provided between the outer peripheral surface of the left rear strut 18 of the canopy 15 and the inner peripheral surface of the main body 25. The cushion member 28 is formed in a cylindrical shape using, for example, a non-slip material such as rubber, a sheet-shaped magnet, or urethane so that the main body portion 25 can be prevented from being displaced from the installation position of the left rear support column 18. .. The cushion member 28, for example, has a role of softening the interference impact between the main body 25 of the warning light 24 and the left rear support column 18 due to the vibration of the hydraulic excavator 1 (buffer function), and the warning light 24 slides with respect to the left rear support column 18. It has the role of preventing (shifting downward) (non-slip function, gap filling function). The cushion member 28 can be attached to the left rear strut 18 by providing, for example, a notch (a missing circle portion) extending in the axial direction at a position in the circumferential direction. The material of the cushion member 28 can be changed according to the purpose.

A power cord 29 extends from the light emitting member 26 of the warning light 24. The power cord 29 is a power cable that supplies electric power to the light emitting member 26 of the warning light 24. The power cord 29 is connected to, for example, a power source (for example, a battery for vehicle auxiliary equipment) provided on the upper swing body 4. The power cord 29 supplies electric power from the power source to the light emitting member 26 (light emitting element 26B). The power cord 29 has a length from the mounting position of the warning light 24 to the power supply. The length of the power cord 29 can be adjusted according to the distance between the warning light 24 and the power supply.

For example, the power cord 29 can be preset to a length corresponding to the model (size) of the hydraulic excavator 1 on which the warning light 24 is installed, and any of a plurality of models having different distances between the warning light 24 and the power supply. It may be set to the length of the model with the longest distance so that it can be attached to. It should be noted that a battery may be provided adjacent to the light emitting member 26 of the warning light 24 (for example, the battery may be built in the main body 25). In this case, the power cord 29 can be omitted, and the warning light 24 can be operated standalone.

A switch (not shown) for switching ON (rotational lighting) and OFF (off) of the warning light 24 can be provided in the vicinity of the driver's seat 12 of the upper swing body 4. As a result, the operator can switch ON / OFF of the warning light 24 while seated in the driver's seat 12. When the warning light 24 is ON, the light emitting element units vertically arranged in the circumferential direction of the warning light 24, that is, the light emitting element units in which the light emitting elements 26B are assembled in a row, blink sequentially in the circumferential direction ( It can be turned on and off by rotation. That is, the warning light 24 can be a rotating light. Further, when the warning light 24 is ON, all the light emitting element units may be turned on, or all the light emitting element units may be blinked at the same timing. Further, the warning light 24 may be capable of changing the light emitting mode (how to make the light emitting member 26 shine). In this case, a light emitting mode selection switch can be provided in the vicinity of the driver's seat 12. When there is no space to add a selection switch, for example, the selection switch for selecting the light emission mode is a dial switch that also serves as an ON / OFF switch, and the dial switch blinks, lights, rotates, and lights a combination of these. , OFF, etc. may be selected.

In any case, the warning light 24 includes a main body 25, a light emitting member 26, a fastening member 27, a cushion member 28, a power cord 29, and the like. The warning light 24 is attached so as to be wound around the left rear column 18 of the canopy 15, that is, around the left rear column 18. In this case, the warning light 24 is mounted on the circumference of the left rear support column 18 of the canopy 15 and at a position where people around the hydraulic excavator 1 can easily see it. That is, the warning light 24 is attached above the left rear column 18 above and below the intermediate position in the downward direction, and more specifically, near the upper end of the left rear column 18.

The warning light 24 is attached to the left rear strut 18 so as not to fall off, for example, by a fastening member 27 such as a clip band or a clamp. When a clip band or a clamp is used as the fastening member 27, the warning light 24 can be easily attached to and detached from the left rear support column 18. Further, by setting the warning light 24 at a higher position among the left rear columns 18 of the canopy 15 and at a position where there are few obstacles in the surroundings, the visibility of the warning light 24 to the people around the hydraulic excavator 1 can be improved. Cognition can be improved. Further, by providing the canopy 15 on the left rear support column 18, it becomes easy to secure a space and a clearance with other parts.

The hydraulic excavator 1 according to the embodiment has the above-described configuration, and the operation thereof will be described next.

The operator sits in the driver's seat 12 and starts the engine 8. When the engine 8 is started, the hydraulic pump is driven by the engine 8. The pressure oil discharged from the hydraulic pump is the running hydraulic pressure according to the lever operation and pedal operation of the traveling lever / pedal operating devices 13 and 13 and the working lever operating devices 14 and 14 provided around the driver's seat 12. Discharges toward a motor, a swivel hydraulic motor, a boom cylinder 5G, an offset cylinder 5H, an arm cylinder 5I, a bucket cylinder 5J, and the like.

As a result, the hydraulic excavator 1 can perform a traveling operation by the lower traveling body 2, a turning operation of the upper rotating body 4, an excavation operation by the working device 5, and the like. At this time, by making the warning light 24 emit light (for example, lighting, blinking, rotating lighting), the people around the hydraulic excavator 1 are alerted that the hydraulic excavator 1 is operating (working). Can be done. In this case, since the warning light 24 is attached near the upper end of the left rear support column 18 of the canopy 15, the visibility and cognition of the warning light 24 can be improved.

That is, according to the embodiment, a warning light 24 is provided on the left rear strut 18, which is a strut of the canopy 15, so as to surround the outer peripheral surface of the left rear strut 18. Therefore, the warning light 24 can be easily visually recognized from around the hydraulic excavator 1 which is a work machine, for example, from the front, rear, left, and right directions (from all directions) of the hydraulic excavator 1. Thereby, the visibility of the warning light 24 to the people around the hydraulic excavator 1 can be improved. In addition, the warning light 24 can be made compact, which makes it possible to save space and is advantageous in terms of layout.

Moreover, according to the embodiment, the warning light 24 has a cylindrical main body 25 that is attached so as to surround the outer peripheral surface of the left rear support column 18, and a light emitting member that is provided on the main body 25 and emits light when power is supplied. It has 26 and. Therefore, the light emitting member 26 can be provided over the entire circumference of the left rear support column 18 of the canopy 15. As a result, the light emitted by the light emitting member 26 can be distributed in any direction of 360 ° centered on the left rear support column 18, and visibility can be improved from this aspect as well.

According to the embodiment, the warning light 24 further includes a cushion member 28 that is provided between the left rear strut 18 and the main body 25 and is elastically deformable. Therefore, the cushion member 28 can stably support the main body 25 with respect to the left rear strut 18. As a result, the warning light 24 can be stably attached to the left rear support column 18.

According to the embodiment, the main body 25 of the warning light 24 is composed of a plurality of divided bodies 25A and 25B connected via a hinge 25C. The divided bodies 25A and 25B are attached to the outer peripheral surface of the left rear strut 18 by sandwiching the left rear strut 18 from the outer peripheral side with the hinge 25C as a fulcrum. Therefore, by opening and closing the main body 25 (divided bodies 25A and 25B) with the hinge 25C as a fulcrum, the main body 25 can be easily attached to the left rear support column 18.

According to the embodiment, the main body 25 is in a direction orthogonal to the length direction of the left rear strut 18 in a state where the plurality of divided bodies 25A and 25B sandwich the left rear strut 18 from the outer peripheral side with the hinge 25C as a fulcrum. The cross section of is formed in a C shape. That is, the main body 25 has a C shape in which a part in the circumferential direction is cut out (with a cutout) when viewed from above (in a plan view). Therefore, a common main body portion 25 formed in a C shape can be attached to columns having different outer diameters (for example, a thick column, a thin column, and a column having an intermediate thickness). Conversely, by forming the main body 25 into a C shape, the range of the outer diameter of the column to which the support can be attached can be widened. As a result, a common warning light can be used for columns having different outer diameters. That is, the cost can be reduced by standardizing the parts. As a result, both improvement in visibility and reduction in cost can be achieved at the same time.

In the embodiment, a case where the fastening member 27 is wound around the outer peripheral surface of the main body 25 has been described as an example. However, the present invention is not limited to this, and for example, a step portion for winding the fastening member may be provided on the outer peripheral surface of the main body portion over the entire circumference, and the fastening member may be wound around the step portion. Further, as in the first modification shown in FIG. 10, the groove portion 31 may be provided on the outer peripheral surface of the main body portion 25.

That is, in the first modification shown in FIG. 10, a groove portion 31 extending in the circumferential direction is provided on the outer peripheral surface of the main body portion 25. The groove portion 31 accommodates a fastening member 27 (see FIG. 6) that fastens the main body portion 25 to the support column (left rear support column 18). According to the first modification shown in FIG. 10, the fastening member 27 for fastening the main body 25 to the support column (left rear support column 18) is provided on the outer peripheral surface of the main body 25 in the circumferential direction. It is housed in the extending groove 31. As a result, the fastening member 27 can be prevented from coming off from the main body 25. That is, the fastening member 27 can be stably attached to the main body 25.

In the embodiment, a case where the warning light 24 is vertically arranged on the left rear support column 18 extending in the vertical direction has been described as an example. However, the present invention is not limited to this, and for example, as in the second modification shown in FIG. 11, the support column 41 extending diagonally with respect to the vertical direction may be vertically arranged via the cushion member 42.

That is, in the second modification shown in FIG. 11, the warning light 24 is vertically arranged by the cushion member 42 with respect to the support column 41 oblique to the vertical direction. In this case, the cushion member 42 can form, for example, the central hole 42A diagonally along the inclination of the support column 41. Further, as the material of the cushion member 42, for example, a synthetic resin (polymer compound) such as plastic can be adopted.

According to the second modification shown in FIG. 11, the warning light 24 is vertically arranged by the cushion member 42 with respect to the support column 41 which is oblique to the vertical direction. As a result, even if the support column 41 is slanted, the warning light 24 can be mounted vertically without being slanted along the support column 41. That is, the warning light 24 can be arranged vertically even if the support column 41 is not vertical (even if it is oblique). Therefore, it is possible to prevent the light emitted from the warning light 24 from becoming slanted, and the visibility can be improved from this aspect as well.

Moreover, as the warning light 24, a common one can be used for both the support column 41 extending in the vertical direction and the support column 41 extending diagonally, except for the cushion member 42. That is, by manufacturing a cushion member corresponding to the inclination of the support column 41 according to the inclination, it is possible to make the members other than the cushion member 42 common. Further, the same cushion member 42 may be used for the columns 41 having different inclinations depending on the degree of inclination of the columns 41 and the material (elastic characteristics) of the cushion members 42. As a result, the cost can be reduced from this aspect as well. As a result, it is possible to achieve both improvement in visibility and reduction in cost at a higher level.

In the embodiment, the case where the warning light 24 is provided on the left rear support column 18 has been described as an example. However, the present invention is not limited to this, and for example, it may be provided on the right rear column or the right front column. Further, in the embodiment, the case where the warning light 24 is provided on one of the plurality of columns 16, 17, and 18 (left rear column 18) has been described as an example. However, the present invention is not limited to this, and for example, it may be provided on both the left rear strut and the right rear strut. Further, it may be provided on each of a plurality of columns.

That is, the warning light is provided on the support column of the canopy, and when the canopy is composed of a plurality of columns, it can be provided on at least one of the plurality of columns. In this case, the warning light can be provided on a support column that is easy for people around the vehicle body to see (there are few obstacles and visibility can be ensured). This also applies to the first modification and the second modification. The same applies when the canopy is other than the three-pillar canopy, for example, a two-pillar canopy, a four-pillar canopy, or the like.

In the embodiment, a case where the main body 25 of the warning light 24 is composed of two divided bodies 25A and 25B has been described as an example. However, the present invention is not limited to this, and the main body of the warning light may be configured by, for example, three or more divided bodies. That is, the main body can be composed of two or more divided bodies. This also applies to the first modification and the second modification.

In the embodiment, a case where the cushion member 28 is provided between the main body 25 of the warning light 24 and the left rear support column 18 has been described as an example. However, the present invention is not limited to this, and for example, the warning light may be provided directly on the support column without providing the cushion member. This also applies to the first modification and the second modification.

In the embodiment (and the modified example), the hydraulic excavator 1 provided with the offset type working device 5 has been described as an example. However, the present invention is not limited to this, and other types such as a hydraulic excavator equipped with a monoboom type working device and a hydraulic excavator equipped with a swing type working device capable of swinging to the left and right (swingable) are used. It can also be applied to a hydraulic excavator equipped with a working device (front device). Further, although the case where the working tool of the working device 5 is the bucket 5E has been described as an example, a working device provided with other working tools such as a crusher may be used.

In the embodiment (and the modified example), the small-sized hydraulic excavator 1 has been described as an example, but it may be applied to, for example, a medium-sized or larger hydraulic excavator. Further, although the case where the vehicle body is composed of the lower traveling body 2 and the upper rotating body 4 has been described as an example, a vehicle body having no rotating body (for example, a front vehicle body having front wheels and a rear vehicle body having rear wheels) has been described. May be an articulated vehicle body) that is flexibly connected via a connecting shaft.

In the embodiment (and modification), the hydraulic excavator 1 has been described as an example of the work machine, but the present invention is not limited to this, and is widely applied to various work machines such as wheel loaders, forklifts, tractors, and combines. Can be done.

1 Hydraulic excavator (working machine)
2 Lower running body (body)
4 Upper swivel body (body)
5 Work equipment 12 Driver's seat 15 Canopy 18 Left rear strut (post)
20 Roof 24 Warning light 25 Main body 25A, 25B Split body 25C Hinge 26 Light emitting member 27 Fastening member 28, 42 Cushion member 31 Groove 41 Strut

Claims (5)

A self-propelled car body equipped with a work device and
The driver's seat provided on the vehicle body and
In a work machine provided with a support column erected on the vehicle body and a canopy provided on the support column and formed by a roof covering the driver's seat from above.
A warning light is provided on the support of the canopy so as to surround the outer peripheral surface of the support.
The warning light is
A cylindrical main body that surrounds and is attached to the outer peripheral surface of the column,
A light emitting member provided in the main body and emitting light when power is supplied is provided .
A work machine characterized in that a cushion member is provided between the support column and the main body portion. A self-propelled car body equipped with a work device and
The driver's seat provided on the vehicle body and
In a work machine provided with a support column erected on the vehicle body and a canopy provided on the support column and formed by a roof covering the driver's seat from above.
A warning light is provided on the support of the canopy so as to surround the outer peripheral surface of the support.
The warning light is
A cylindrical main body that surrounds and is attached to the outer peripheral surface of the column,
A light emitting member provided in the main body and emitting light when power is supplied is provided.
The main body is composed of a plurality of divided bodies divided in the circumferential direction and connected via hinges.
The plurality of divided bodies, the strut the hinge as a fulcrum in a state of sandwiching the outer peripheral side, work machine characterized in that attached to the outer peripheral surface of the strut by a fastening member. The main body portion has a C-shaped cross section in a direction orthogonal to the length direction of the support column in a state where the plurality of divided bodies sandwich the support column from the outer peripheral side with the hinge as a fulcrum. The working machine according to claim 2 , wherein the working machine is characterized. A self-propelled car body equipped with a work device and
The driver's seat provided on the vehicle body and
In a work machine provided with a support column erected on the vehicle body and a canopy provided on the support column and formed by a roof covering the driver's seat from above.
A warning light is provided on the support of the canopy so as to surround the outer peripheral surface of the support.
The warning light is
A cylindrical main body that surrounds and is attached to the outer peripheral surface of the column,
A light emitting member provided in the main body and emitting light when power is supplied is provided.
A groove extending in the circumferential direction is provided on the outer peripheral surface of the main body.
Wherein the groove, working machine you characterized in that fastening members for fastening said main body portion with respect to the strut is housed. The work machine according to claim 1 , wherein the warning light is vertically arranged by the cushion member with respect to the support column oblique to the vertical direction.

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