JP4704859B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine suitably used as, for example, a hydraulic excavator, and more particularly to a construction machine having a headlamp on the front side of an upper swing body.

  Generally, as a construction machine, for example, a small hydraulic excavator is known (for example, see Patent Document 1). In this type of conventional excavator, an upper swinging body is turnably mounted on a self-propelled lower traveling body, and a working device for excavation work such as earth and sand can be raised and lowered on the upper swinging body. Is provided. The upper swing body is provided with a driver seat on which an operator is seated and a handrail located on the front side of the driver seat. The handrail is provided with a headlamp that irradiates the front side of the upper swing body.

Japanese Patent Application Laid-Open No. 2002-371590

  By the way, in the above-described prior art, the headlamp is disposed below the driver's seat near the center position in the left and right directions facing the driver's seat in the handrail. For this reason, for example, when performing excavation work on the ground or the like, there is a possibility that the headlamps obstruct the field of view below the front for the operator seated in the driver's seat. In addition, since the headlamps are arranged below the front part of the driver's seat, for example, when a seated operator steps on the legs with a handrail, the headlamps may interfere with the operator's legs. There is also a risk that the optical axis of the headlamp may be shifted due to contact with the headlamp.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a construction machine that can secure a field of view below the front and that makes it difficult for an operator's legs to contact the headlamp. is there.

In order to solve the above-mentioned problems, the invention of claim 1 is provided with a lower traveling body capable of self-propelling, an upper revolving body mounted on the lower traveling body so as to be capable of swiveling, and an upper revolving structure provided on the upper revolving body. In the construction machine comprising the above working device , the upper revolving structure includes a driver seat on which an operator is seated, a canopy that covers the driver seat above by a canopy roof, and a right front side of the driver seat. a monitor unit for notifying the state of the construction machine and the handrail before positioned in front of the driver's seat and a monitor device, set the hatch the operator located on the left side of the driver's seat moves up and down, The upper swing body is provided with a headlamp that is positioned on the front side of the monitor device and illuminates the front of the handrail, and the headlamp is operated by an operator seated in the driver's seat. In front of that line of sight Placed in a position, the operator seated in the driver's seat is characterized in that at least a part of which is configured to hide the monitor device when viewed forwardly.

According to a second aspect of the present invention, the front handrail is attached to the right front pillar of the canopy on the base end side, and the upper horizontal strut and the lower horizontal strut extending in parallel with each other in two upper and lower stages, and the upper horizontal strut and the lower And a folding part that connects the tip side of the side horizontal column in a folded state, and the headlamp is arranged on the upper right side of the upper horizontal column .

According to a third aspect of the present invention, the headlamp is disposed above the seat portion where the operator is seated in the driver seat .

According to a fourth aspect of the present invention, the headlamp is configured such that the optical axis can be adjusted in the upward, downward, leftward, and rightward directions.

  According to the first aspect of the present invention, the upper turning body is provided with the monitor device in front of the left side or the right side of the driver's seat, and the headlamp is provided in front of the monitor device. At this time, the monitor device is provided at the corners in the left and right directions that are easy to see from the operator and do not obstruct the front view. For this reason, the headlamp arranged on the front side of the monitor device can be hidden by the monitor device when viewed from the operator seated in the driver's seat. Thereby, the headlamp does not enter the field of view in front of the driver's seat, and the field of view below the front can be secured.

  Moreover, the monitor apparatus is arrange | positioned in the position higher than a foot | leg as a position where it is easy to see from an operator. For this reason, since the headlamp arranged on the front side of the monitor device is also arranged at a position higher than the foot, the operator's leg does not contact the headlamp. As a result, the optical axis of the headlamp does not shift due to contact with the leg of the operator, and a desired position such as an excavation position can be reliably illuminated with the headlamp. Furthermore, since the headlamp is arranged at a position higher than the operator's feet, the irradiation range of the headlamp can be widened compared to the case where the headlamp is arranged at a lower position, and the upper revolving body can be boarded. The operator can easily adjust the optical axis while viewing the work site and the like.

According to the first aspect of the present invention, the headlamp is configured such that at least a part of the headlamp is hidden by the monitor device when the operator seated in the driver's seat looks forward. Will not interfere. For this reason, it is possible to secure a field of view below the front as viewed from the operator seated in the driver's seat.

According to the first aspect of the present invention, since the headlamp is disposed on the front side of the monitor device in the front handrail, the headlamp can be attached using the front handrail. For this reason, it is not necessary to separately provide a column for the headlamp, and the manufacturing cost can be reduced.

According to the first aspect of the present invention, the monitor device is disposed in front of the right side, which is the opposite side of the elevator door, with the driver's seat in between, and the line of sight when the operator seated in the driver's seat looks at the monitor device. Since the headlamp is arranged at a position in front of the vehicle, the headlamp does not enter the field of view in front of the driver's seat, and the field of view below the front can be secured. Further, since the monitor device and the headlamp are arranged on the opposite side of the elevator opening with the driver's seat in between, the operator does not touch the headlamp when the operator moves up and down the upper swing body. Therefore, the operator, headlamp etc. without hinder, it is possible to smoothly move in the vertical direction with respect to the upper rotating body, the optical axis of the headlight in accordance with the contact of the lifting when the operator is not Can be prevented.
According to the second aspect of the present invention, since the headlamp is disposed on the upper right side of the upper horizontal column that forms the guard member, for example, as compared with the case where the headlamp is disposed at a lower position such as a foot. The irradiation range can be expanded.
According to the invention of claim 3, since the headlamp is disposed above the seat portion on which the operator is seated in the driver's seat, the headlamp can be disposed at a position higher than the feet. Leg does not touch the headlamp. As a result, the optical axis of the headlamp does not shift due to contact with the operator's legs during excavation work, for example, and a desired position such as the excavation position can be reliably illuminated with the headlamp.

According to the invention of claim 4 , the headlamp is configured so that the optical axis can be adjusted in the upward, downward, leftward, and rightward directions. Even when deviating from the front to the left or right, the excavation position can be reliably illuminated by adjusting the optical axis of the headlamp. Further, since the headlamp is disposed on the front side facing the back surface of the monitor device, the headlamp is disposed at a position higher than the operator's feet, similarly to the monitor device. For this reason, compared with the case where the headlamps are arranged at the operator's feet, the operator who gets on the upper swing body does not need to get off or squat down, and can easily illuminate while visually observing the excavation position. Axis adjustment can be performed.

  Hereinafter, an embodiment of a construction machine according to the present invention will be described in detail with reference to FIGS. 1 to 9 by taking as an example a case where the construction machine is applied to a hydraulic excavator.

  In the figure, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a self-propelled crawler-type lower traveling body 2, an upper revolving body 3 that is turnably mounted on the lower traveling body 2, and the upper swivel. It is roughly constituted by an offset type working device 4 provided on the front side of the body 3 so as to be able to move up and down.

  Here, the working device 4 includes a lower boom 4A attached to the front side of a revolving frame 5 described later, an upper boom 4B attached to the distal end side of the lower boom 4A, and an arm attached to the distal end side of the upper boom 4B. A support rod 4C, an arm 4D attached to the distal end side of the arm support 4C, a bucket 4E attached to the distal end side of the arm 4D, and a link rod connecting the lower boom 4A and the arm support 4C 4F, a boom cylinder 4G for rotating (lowering and raising) the lower boom 4A upward, downward, an arm cylinder 4H for rotating the arm 4D, a bucket cylinder 4I for rotating the bucket 4E, and an upper boom 4B on the left, An offset cylinder 4J that swings in the right direction is roughly configured.

  Then, the working device 4 moves the lower boom 4A up and down by the boom cylinder 4G while the upper boom 4B is translated (offset) in the left and right directions with respect to the lower boom 4A by the offset cylinder 4J, and the arm 4D by the arm cylinder 4H. Is rotated, and the bucket 4E is rotated by the bucket cylinder 4I to perform excavation work such as a gutter on the side of the road.

  On the other hand, the upper swing body 3 balances the weight between the swing frame 5 that forms a support structure that is swingably provided on the lower traveling body 2 and the work device 4 that is provided at the rear end of the swing frame 5. It is mainly constituted by a counterweight 6, an exterior cover 7 that covers a mounted device (not shown) such as an engine and a hydraulic pump mounted on the revolving frame 5, a floor member 8, a canopy 20, and the like described later.

  Here, the upper turning body 3 is formed in a substantially circular shape when viewed from above so that it can turn within the vehicle width of the lower traveling body 2 (see FIG. 2). Further, the turning radius of the rear end portion of the upper swing body 3 is defined by the outer surface of the counterweight 6, and the counterweight 6 is as front as possible in order to reduce the turning radius of the rear end portion of the upper swing body 3. It is arranged close to (the working device 4 side).

  Reference numeral 8 denotes a floor member positioned on the front side of the counterweight 6 and disposed on the revolving frame 5. The floor member 8 is disposed on the left side of the work device 4 and is attached with a driver's seat 14 and the like which will be described later. is there. As shown in FIGS. 6 and 7, the floor member 8 includes a floor plate portion 9, a lever / pedal mounting plate 10, a front canopy mounting plate 11, a driver seat base 12, a rear canopy mounting plate 13, and the like, which will be described later. Has been.

  Reference numeral 9 denotes a floor plate portion that forms a scaffold for an operator seated in a driver seat 14 to be described later. The floor plate portion 9 is formed in a substantially rectangular flat plate shape elongated in the left and right directions. Further, as shown in FIG. 4, the floor plate portion 9 is disposed between a driver seat 14 and a guard member 28 described later, and the left end side of the floor plate portion 9 is located on the left side of the driver seat 14 and is placed on the operator side. Is an elevating port 9 </ b> A that moves up and down to the upper swing body 3. Thus, the operator ascends and descends to the floor board portion 9 through the elevator port 9A located between the driver's seat 14 and the guard member 28.

  Further, a lever / pedal mounting plate 10 extending in the left and right directions is provided on the front end side of the floor plate portion 9, and the lever / pedal mounting plate 10 includes a travel lever / pedal device 18 and an offset pedal device which will be described later. 19 is attached.

  Reference numeral 11 denotes a front canopy mounting plate provided at the front end portion of the lever / pedal mounting plate 10, and the front canopy mounting plate 11 is composed of a strength member bent in an L shape, and is attached to the lever / pedal mounting plate 10. Along the left and right sides. The front canopy mounting plate 11 is configured to be mounted with a front mounting member 21 of a canopy 20 described later.

  Reference numeral 12 denotes a driver seat pedestal provided on the rear side of the floor plate portion 9, and the driver seat pedestal 12 is formed in a box shape that rises upward from the rear side of the floor plate portion 9. On the driver seat base 12, a driver seat 14 to be described later is attached.

  Reference numeral 13 denotes a rear canopy mounting plate provided at the rear end portion of the driver seat pedestal 12, and the rear canopy mounting plate 13 projects substantially horizontally from the rear end portion of the driver seat pedestal 12 to the rear. The rear canopy mounting plate 13 is configured to be attached with a rear mounting member 22 of a canopy 20 described later.

  Reference numeral 14 denotes a driver seat on which an operator is seated. The driver seat 14 is mounted on the driver seat base 12 of the floor member 8. As shown in FIGS. 1 to 7, operation lever devices 15 and 15 for operating the work device 4 are provided on both the left and right sides of the driver seat 14. Traveling lever / pedal devices 18 and 18 and an offset pedal device 19 are provided. The driver's seat 14 includes a seat portion 14A on which an operator is seated, and a backrest portion 14B located on the rear side of the seat portion 14A and extending upward.

  Reference numeral 16 denotes a cover member erected on the right side of the floor member 8. The cover member 16 extends from the lower side of the operation lever device 15 on the right side of the driver's seat 14 to the front side along the right side wall portion 27B of the canopy 20 described later. It is provided in an extended state. Further, the cover member 16 covers, for example, a tank, a duct, various wirings (not shown), and the front end side (front end side) is a protruding portion 16A that protrudes upward in a substantially prismatic shape. ing.

  Reference numeral 17 denotes a monitor device provided on the protruding portion 16A of the cover member 16. The monitor device 17 is provided on the side of the protruding portion 16A facing the driver's seat 14, and is constituted by, for example, a liquid crystal display or the like. Meter, remaining fuel, water temperature, current position by GPS, etc. can be displayed. Thereby, the monitor device 17 notifies the operator of various states of the excavator 1 through vision. Further, the monitor device 17 is disposed, for example, above the seat portion 14A of the driver's seat 14, and the right front corner (canopy) on the opposite side of the elevator port 9A across the driver's seat 14 of the floor member 8. 20 in the vicinity of the right front pillar 23). As a result, the monitor device 17 is configured such that the operator sitting on the driver's seat 14 can easily see various meters and the like without obstructing the operator's front view, and does not become an obstacle when the operator moves up and down. Yes.

  Reference numerals 18 and 18 denote left and right traveling lever / pedal devices arranged on the front side of the driver's seat 14, and each traveling lever / pedal device 18 is operated by an operator seated on the driver's seat 14 so as to travel under the vehicle. It controls the traveling of the body 2. Reference numeral 19 denotes an offset pedal device disposed on the right side of the travel lever / pedal device 18, and the offset pedal device 19 is operated by an operator to expand and contract the offset cylinder 4J of the work device 4, thereby causing an upper boom. 4B is offset in the left and right directions.

  Reference numeral 20 denotes a canopy attached to the floor member 8. The canopy 20 covers the driver's seat 14 from above and from the right side. Here, as shown in FIGS. 5 and 6, the canopy 20 is a three-post canopy including a front mounting member 21, a rear mounting member 22, pillars 23, 24, and 26, a canopy roof 27, and the like, which will be described later. It is configured.

  Reference numeral 21 denotes a front attachment member attached to the front side of the floor member 8, and the front attachment member 21 is formed as a hollow rectangular tube extending in the left and right directions and having a strong closed sectional structure. Here, a lower end portion of a right front pillar 23 to be described later is fixed to the right end surface of the front mounting member 21 by welding or the like. The front mounting member 21 is fixed to the front canopy mounting plate 11 of the floor member 8 using a plurality of bolts.

  A rear side mounting member 22 is mounted on the rear side of the floor member 8. The rear side mounting member 22 is formed in a flat plate shape extending in the left and right directions, and a right rear pillar 24 (to be described later) and a left side are formed on the upper surface side thereof. The lower end portion of the rear pillar 26 is fixed by welding or the like. The rear mounting member 22 is fixed to the rear canopy mounting plate 13 of the floor member 8 using a plurality of bolts.

  Reference numeral 23 denotes a right front pillar which is fixed to the right end side of the front mounting member 21 by welding or the like and extends upward and downward. The right front pillar 23 is formed using, for example, a pipe material. Here, the upper end side of the right front pillar 23 is a curved portion 23A that is curved in an L shape toward the rear.

  Reference numeral 24 denotes a right rear pillar which is fixed to the right end side of the rear mounting member 22 by welding or the like and extends upward and downward. The right rear pillar 24 is formed using, for example, a pipe material or the like, and its upper end side is a front side. The curved portion 24A is curved in an L shape toward the head. Then, the curved portion 23A of the right front pillar 23 and the curved portion 24A of the right rear pillar 24 are joined by means of welding or the like at the joint portion 25, and the right front pillar 23 and the right rear pillar 24 are connected to a canopy roof 27 described later. This constitutes a strong frame for mounting the frame.

  Reference numeral 26 denotes a left rear pillar which is fixed to the left end side of the rear mounting member 22 by welding or the like and extends upward and downward. The left rear pillar 26 is formed using, for example, a pipe material or the like, and a lower end portion is formed on the rear side. It is fixed to the mounting member 22, and the upper end is fixed to the curved portion 24 </ b> A of the right rear pillar 24.

  Reference numeral 27 denotes a canopy roof that is attached to the right front pillar 23 and the right rear pillar 24. The canopy roof 27 is formed using a thin steel plate or the like, and a canopy portion 27A that covers the driver seat 14 from above, and the driver seat 14 And a right side wall portion 27B that covers from the right side.

  Reference numeral 28 denotes a guard member as a front handrail fixed to the right front pillar 23 and the like, and the guard member 28 is constituted by a pipe material or the like bent in a U-shape. It is formed by an upper horizontal column 28A and a lower horizontal column 28B that are fixed to the right front pillar 23 and extend parallel to each other on the left side, and a folded portion 28C that connects these horizontal columns 28A and 28B in a folded state. Accordingly, the guard member 28 extends from the right front pillar 23 in the left and right directions along the front mounting member 21, and the upper horizontal column 28 </ b> A is positioned in the vicinity of the front side of the monitor device 17, for example. It is arranged at the same height as 14A. The guard member 28 is disposed on the front side of the driver's seat 14 and the travel lever / pedal device 18 and protects the driver's seat 14 and the like from the front.

  Reference numeral 29 denotes a mounting seat provided on the upper horizontal column 28A of the guard member 28. The mounting seat 29 is located on the upper side of the upper horizontal column 28A (on the side near the right front pillar 23 of the canopy 20). Has been. Thus, the mounting seat 29 is positioned on the front side of the monitor device 17 and supports a headlamp 30 described later.

  Reference numeral 30 denotes a headlamp provided on the mounting seat 29 of the guard member 28 for irradiating the front of the driver's seat 14, and the headlamp 30 is arranged on the rear surface of the monitor device 17 as shown in FIGS. 4 and 5. Are disposed on the front side of the monitor device 17 at a position facing each other and on the upper side of the seat portion 14A of the driver's seat 14. That is, the headlamp 30 is disposed at a position that is in front of the line of sight S when the operator seated on the driver's seat 14 looks at the monitor device 17. Thereby, as shown in FIG. 8, the headlamp 30 is configured such that at least a part of the headlamp 30 is hidden by the monitor device 17 when the operator sitting on the driver's seat 14 looks forward.

  Further, as shown in FIG. 9, the headlamp 30 is attached to an attachment seat 29 of the guard member 28 via a bracket 30A. As a result, the headlamp 30 is configured such that the optical axis can be adjusted in the upward, downward, left, and right directions. The headlamp 30 illuminates a work position such as an excavation position located under the front side of the driver's seat 14 by an operator adjusting the optical axis at the time of excavation work at night, for example.

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

  First, the operator can drive the vehicle or turn the upper swing body 3 by operating the travel lever 10A, the work lever 10B, etc. while sitting on the driver's seat 14, and the lower boom of the work device 4 can be turned. 4A, arm 4D, and bucket 4E can be operated to perform excavation work such as earth and sand.

  For example, when performing excavation work at night, the operator turns on the headlamp 30 and adjusts the optical axis of the headlamp 30 while being on the floor member 8 of the upper swing body 3. As a result, a desired excavation position can be illuminated by the headlamp 30, and visibility during night excavation work can be ensured.

  However, in the present embodiment, the upper turning body 3 is provided with the monitor device 17 on the right front side of the driver's seat 14 and the headlamp 30 on the front side of the monitor device 17. At this time, the monitor device 17 is provided at corners in the left and right directions that are easy to see from the operator and do not obstruct the front view. For this reason, at least a part of the headlamp 30 arranged on the front side of the monitor device 17 can be hidden by the monitor device 17 when viewed from the operator seated on the driver's seat 14. Thereby, for example, the headlamp 30 does not enter the field of view in front of the driver's seat 14 and the field of view below the front is ensured, compared to the case where the headlamp is disposed on the front side of the traveling lever / pedal device 18 or the like. Can do.

  Further, the monitor device 17 is disposed above the seat portion 14A of the driver's seat 14, for example, as a position that can be easily seen by the operator. For this reason, since the headlamp 30 disposed on the front side of the monitor device 17 is also disposed at a position higher than the feet, the operator's legs do not contact the headlamp 30. As a result, for example, the optical axis of the headlamp 30 does not shift due to contact with the operator's leg during excavation work or the like, and a desired position such as an excavation position can be reliably illuminated by the headlamp 30. .

  Furthermore, since the headlamp 30 is disposed above the guard member 28 as a position higher than the seat portion 14A of the driver's seat 14, for example, the headlamp is compared with a case where the headlamp is disposed at a lower position such as a foot. 30 irradiation ranges can be expanded. Further, since the headlamp 30 is arranged above the guard member 28 higher than the seat portion 14A, the operator who gets on the upper swing body 3 does not have to get off or squat down, and visually check the excavation position and the like. However, the optical axis can be adjusted easily.

  Further, since the headlamp 30 is disposed on the front side of the monitor device 17 in the guard member 28, the headlamp 30 can be attached using the guard member 28. For this reason, it is not necessary to separately provide a column or the like for the headlamp 30, and the manufacturing cost can be reduced.

  In particular, in the present embodiment, the monitor device 17 is disposed in front of the right side on the opposite side of the elevator port 9A across the driver's seat 14, and the operator seated in the driver's seat 14 looks at the monitor device 17 In addition, the headlamp 30 is arranged at a position in front of the line of sight S. For this reason, since the headlamp 30 can be disposed in the vicinity of the right front pillar 23 of the canopy 20 apart from the elevator 9A together with the monitor device 17, the headlamp 30 enters the field of view in front of the driver's seat 14. And the field of view below the front can be secured.

Further, since the monitor device 17 and the headlamp 30 are arranged on the opposite side of the elevator opening with the driver's seat 14 in between, the operator may contact the headlamp 30 when the operator ascends and descends to the upper swing body 3. Absent. For this reason, the operator can smoothly move up and down with respect to the upper swing body 3 without the headlamp 30 and the like getting in the way, and the light of the headlamp 30 is accompanied by the operator's contact during the raising and lowering. it is possible to prevent the shaft is FIG.

  In addition, since the headlamp 30 is configured so that the optical axis can be adjusted in the upward, downward, leftward, and rightward directions, the excavation position is left from the front of the upper swing body 3 when using the offset type work device 4, for example. Even when the position is shifted in the right direction, the digging position can be reliably illuminated by adjusting the optical axis of the headlamp 30.

  In the embodiment described above, the monitor device 17 and the headlamp 30 are arranged at the corner on the right front side of the driver's seat 14. However, the present invention is not limited to this, and the monitor device and the headlamp may be arranged at the left front corner of the driver's seat 14 (in the vicinity of the elevator 9A of the upper swing body 3).

  In the embodiment, the headlamp 30 is attached to the guard member 28. However, the headlamp 30 may be configured to be disposed on the front side of the monitor device 17. For example, the headlamp 30 may be mounted on the right front pillar 23 of the canopy 20.

  In the above embodiment, the headlamp 30 is configured such that a part of the headlamp 30 is hidden by the monitor device 17 as viewed from the operator seated on the driver's seat 14, but for example, all the headlamps are hidden by the monitor device. Also good.

  Further, in the above-described embodiment, the case where the headlamp 30 is applied to the hydraulic excavator 1 including the offset working device 4 has been described as an example. However, the present invention is not limited to this. For example, the present invention may be applied to a mono-boom type working device without an offset mechanism or a hydraulic excavator provided with a swing type working device that swings to the left and right. It can be widely applied to other construction machines other than excavators.

1 is a front view showing a hydraulic excavator according to an embodiment of the present invention. FIG. 2 is a plan view of FIG. 1 showing the excavator as viewed from above. FIG. 3 is a left side view of FIG. 1 showing the hydraulic excavator as seen from the direction of arrows III-III in FIG. 1. It is sectional drawing which shows the floor member of a hydraulic shovel, a driver's seat, etc. in the state seen from the arrow IV-IV direction in FIG. It is a perspective view which expands and shows the floor member, driver's seat, canopy, etc. of a hydraulic excavator. It is a disassembled perspective view shown in the state before assembling the floor member and canopy in FIG. It is a perspective view which expands and shows a floor member, a driver's seat, etc. in the state which removed the canopy in FIG. It is a perspective view which shows a monitor apparatus, a guard member, a headlamp, etc. when the operator who seated on the driver's seat looks at the front front. It is a principal part expansion perspective view which expands and shows a guard member, a headlamp, etc.

Explanation of symbols

1 Hydraulic excavator (Construction machinery)
DESCRIPTION OF SYMBOLS 2 Lower traveling body 3 Upper revolving body 4 Working device 9A Lifting port 14 Driver's seat 14A Seat part 14B Backrest part 17 Monitor apparatus 20 Canopy 28 Guard member (front handrail)
30 headlamp 30A bracket

Claims (4)

In a construction machine comprising a self-propelled lower traveling body, an upper revolving body mounted so as to be able to swivel on the lower traveling body, and a work device provided on the upper revolving body so as to be able to be raised and lowered,
The upper swing body includes a driver seat on which an operator is seated, a canopy that covers an upper portion of the driver seat with a canopy roof, and a monitor device that is located in front of the driver seat on the right side and notifies the state of the construction machine. a handrail before positioned in front of the driver's seat and a monitor device, set the hatch the operator located on the left side of the driver's seat moves up and down,
The upper swivel body is provided with a headlamp that is positioned on the front side of the monitor device and illuminates the front of the handrail,
The headlamp is disposed at a position that is in front of the line of sight when an operator seated in the driver's seat looks at the monitor device, and at least one of the headlamps is viewed when the operator seated in the driver's seat looks forward. A construction machine characterized in that a part is hidden by the monitor device. The front handrail is attached to the right front pillar of the canopy at the base end side, and the upper horizontal strut and the lower horizontal strut extending in parallel with each other in two upper and lower stages, and the distal end sides of the upper horizontal strut and the lower horizontal strut A folded portion connected in a folded state,
The construction machine according to claim 1, wherein the headlamp is arranged on an upper right side of the upper horizontal column.   The construction machine according to claim 1 or 2, wherein the headlamp is configured to be disposed above a seat portion on which an operator sits in the driver seat.   The construction machine according to claim 1, 2, or 3, wherein the headlamp is configured to be capable of adjusting an optical axis upward, downward, leftward, and rightward.

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