JP2020084489A - Construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machine capable of effectively preventing contact of a worker with a camera when working on the upper surface of a revolving structure and ensuring workability.
A construction machine includes an undercarriage, an upper revolving structure provided on the vertical upper side of the lower traveling structure so as to be rotatable with respect to the lower traveling structure, a work device connected to the upper revolving structure, and an upper revolving structure. And a cab installed in. In the upper revolving superstructure, the upper surface of the revolving superstructure is exposed to the outside in a state of facing the vertically upper side, and the revolving superstructure upper surface is formed by the frame. The stopper is attached to the frame at an outer edge of the upper surface of the revolving structure opposite to the cab with the working device interposed therebetween, and extends vertically upward from the outer edge of the upper surface of the revolving structure. A camera can be attached to the upper end of the stopper.
[Selection diagram] Figure 1

Description

The present invention relates to a construction machine.

Patent Document 1 discloses a hydraulic excavator, which is a type of construction machine. In this hydraulic excavator, an upper revolving structure is provided vertically above the lower traveling structure, and the upper revolving structure can swing with respect to the lower traveling structure. A cab (driver's cab) for operating construction machines and the like is installed on the upper swing body, and a working device including a boom and the like is connected to the cab. The cab and the working device are rotatable with respect to the undercarriage together with the upper revolving structure. Further, the upper revolving superstructure is provided with a revolving superstructure upper surface that is exposed to the outside in a state of facing the vertically upper side. Then, on the upper surface of the revolving structure, the camera is attached to the outer edge of the upper revolving structure on the side opposite to the cab with the working device sandwiched therebetween. The image acquired by the camera shows the situation of the area on the opposite side of the cab in the width direction of the upper swing body around the hydraulic excavator. Then, the image captured by the camera is displayed on the display screen inside the cab. As a result, the operator can visually recognize the state of the area on the side opposite to the cab in the width direction of the upper swing body around the hydraulic excavator inside the cab.

JP, 2010-112270, A

In a construction machine such as a hydraulic excavator, for example, an engine room in which an engine is arranged, a pump room in which a pump is arranged, and the like are provided on the rear side of a cab and a working device in an upper swing body. Then, in the maintenance work of the engine room, the pump room, etc., the worker may perform the work with the upper surface of the revolving structure to which the camera is attached as a scaffold. Therefore, when working on the upper surface of the revolving structure, it is required that the operator's contact with the camera be effectively prevented and the workability be secured.

The present invention has been made to solve the above problems, and an object of the present invention is to effectively prevent contact of a worker with a camera when working on the upper surface of a revolving structure and ensure workability. The purpose is to provide construction machinery.

In order to achieve the above-mentioned object, a construction machine according to an aspect of the present invention is a lower traveling body and an upper revolving superstructure provided vertically above the lower traveling body so as to be rotatable with respect to the lower traveling body, It has a revolving superstructure upper surface that is exposed to the outside in a state of facing vertically upward, and the revolving superstructure upper surface that forms a scaffold in maintenance work, and the upper revolving superstructure is connected to the upper revolving superstructure and together with the upper revolving superstructure. A working device that revolves, a cab installed on the upper revolving structure, a frame that forms the upper surface of the revolving structure in the upper revolving structure, and a frame on the upper surface of the revolving structure that is opposite to the cab with the working device interposed therebetween. A stopper that is attached to the frame at the outer edge portion and extends vertically upward from the outer edge portion of the upper surface of the revolving structure, forms a slip stopper from the upper surface of the revolving structure, and attaches a camera to the upper end portion. And a possible stopper.

According to the present invention, it is possible to provide a construction machine in which a worker is effectively prevented from coming into contact with a camera when working on the upper surface of a revolving structure and workability is ensured.

FIG. 1 is a perspective view showing a hydraulic excavator according to the first embodiment. FIG. 2 is a side view showing the hydraulic excavator according to the first embodiment, showing the lower traveling body and the upper revolving body as viewed from one side in the width direction. FIG. 3 is a top view showing the hydraulic excavator according to the first embodiment as viewed from the vertically upper side. FIG. 4 is a perspective view showing a configuration of an outer edge portion of the upper swing body of the upper swing body according to the first embodiment on the side opposite to the cab across the working device and the vicinity thereof. FIG. 5 is a side view showing the camera unit and its vicinity in the upper revolving structure according to the first embodiment, as viewed from the outside in the width direction. FIG. 6 is a perspective view showing the camera unit according to the first embodiment with only the camera cover removed from other components. FIG. 7 is a perspective view showing the camera unit according to the first embodiment by disassembling each part.

An embodiment of the present invention will be described with reference to FIGS. 1 to 7.

1 to 3 show a hydraulic excavator 1 which is a construction machine according to a first embodiment. As shown in FIGS. 1 to 3, the hydraulic excavator 1 includes a lower traveling body 2 and an upper revolving body 3 provided on the vertically upper side (arrow Z1 side) of the lower traveling body 2. The upper revolving structure 3 is capable of revolving with respect to the lower traveling structure 2 around a revolving axis R (see FIG. 2) that is parallel or substantially parallel to the vertical direction (directions indicated by arrows Z1 and Z2).

In each of the lower traveling structure 2 and the upper revolving structure 3, a front-rear direction (vertical or substantially vertical) intersecting the vertical direction and a width direction intersecting both the vertical direction and the front-rear direction are defined. .. 1 to 3 and the like, the width direction of the upper swing body 3 matches the directions indicated by the arrows Y1 and Y2, and the front-back direction of the upper swing body 3 matches the directions indicated by the arrows X1 and X2. FIG. 1 is a perspective view. In FIG. 2, the upper swing body 3 is shown as viewed from one side in the width direction, and the upper swing body 3 is shown as viewed from the right side (arrow Y2 side). Further, in FIG. 3, each of the lower traveling body 2 and the upper revolving body 3 is shown as viewed from the vertically upper side. Further, FIGS. 1 to 3 show a state in which the front side of the upper swing body 3 (arrow X1 side) matches or substantially matches the front side of the lower traveling body 2. Therefore, in FIG. 2, the lower traveling body 2 is shown as viewed from one side in the width direction, that is, the right side.

A working device 5 is connected to the upper swing body 3. The working device 5 revolves with the upper revolving structure 3 with respect to the lower traveling structure 2. The work device 5 includes a boom 6, an arm 7, and a bucket 8. The base end of the boom 6 is rotatably attached to the upper swing body 3. By rotating the boom 6 with respect to the upper revolving structure 3, the boom 6 performs an upright motion or a prone motion with respect to the upper revolving structure 3. When the boom 6 is in the most upright state with respect to the upper swing body 3, the boom 6 extends from the upper swing body 3 toward the upper side in the vertical direction. Further, in a state in which the boom 6 is in the most convoluted shape with respect to the upper swing body 3, the boom 6 extends from the upper swing body 3 to the front side of the upper swing body 3, and the boom 6 has an upper swing body with respect to the upper swing body 3. It projects to the front side of 3. The base end of the arm 7 is rotatably attached to the tip of the boom 6. The bucket 8, which is a work attachment, is rotatably attached to the tip of the arm 7. In the hydraulic excavator 1, the work device 5 is driven to excavate earth and sand by the bucket 8. In the present embodiment, the center plane M (see FIG. 3) of the upper swing body 3 in the width direction (left-right direction) passes through the work device 5 (boom 6).

The upper swing body 3 includes a base (base frame) 11. The base 11 is provided at the lower end of the upper swing body 3 in the vertical direction. Further, in the upper swing body 3, the base 11 is formed from the front end portion to the rear end portion. In the upper swing body 3, the base 11 is formed from one end to the other end in the width direction, that is, from the left end to the right end. A cab (driver's cab) 12 is installed on a base 11 of the upper swing body 3. The operator operates the hydraulic excavator 1 and the like inside the cab 12. In the upper swing body 3, the cab 12 extends from the front end portion toward the rear side. Further, the cab 12 is arranged side by side with respect to the boom 6 in the width direction of the upper swing body 3. In the upper swing body 3 of the present embodiment, the cabs 12 are arranged side by side on the left side (arrow Y1 side) with respect to the boom 6 (work device 5).

A cover 13 is installed on the base 11 of the upper swing body 3. Inside the cover 13, an engine room (not shown) in which an engine (not shown) is arranged, a pump chamber (not shown) in which a pump (not shown) is arranged, and the like are formed. In the upper swing body 3, the cover 13 covers the space in which the engine room, the pump room, and the like are formed from the vertically upper side and both sides (left side and right side) in the width direction. Therefore, the engine room, the pump room, and the like are formed between the base 11 and the upper wall of the cover 13 in the vertical direction. Further, the cover 13 is provided with doors 15, 16 and 17 that can be opened and closed. In the maintenance work of the engine room, the pump room, and the like, the worker opens any one or more of the doors 15 to 17 to perform the work.

A counterweight 18 can be installed on the base 11 of the upper swing body 3. The counterweight 18 is a weight that keeps the balance of the hydraulic excavator 1. In the state where the counterweight 18 is installed on the base 11 in the upper swing body 3, the counterweight 18 is arranged on the rear side with respect to the cover 13. Then, in the upper swing body 3, the counterweight 18 is adjacent to the rear side with respect to the space in which the engine room, the pump room, and the like are formed.

In the upper swing body 3, the frames 21 and 22 are connected to the cab 12 from the rear side. The frames 21 and 22 are arranged between the cab 12 and the cover 13 in the front-rear direction of the upper swing body 3. Further, in the present embodiment, the center plane M (see FIG. 3) in the width direction (horizontal direction) of the upper swing body 3 passes through the frame 22. The frames 21 and 22 are arranged side by side with respect to each other in the width direction of the upper swing body 3. In the present embodiment, the frame 21 is arranged on the side where the cab 12 is located with respect to the frame 22. Then, in the upper swing body 3, the frame 21 is arranged side by side on the left side (arrow Y1 side) with respect to the frame 22. Further, the upper surfaces of the frames 21 and 22 are exposed to the outside in a state of facing the vertically upper side.

In addition, the frames 23 and 24 are installed on the base 11 of the upper swing body 3. The frames 23 and 24 are arranged on the side opposite to the side where the frame 21 and the cab 12 are located with respect to the work device 5 (boom 6) and the frame 22. That is, the frames 23 and 24 are arranged on the side opposite to the cab 12 with the working device 5 interposed therebetween in the width direction of the upper swing body 3. In the upper swing body 3 of the present embodiment, the frames 23 and 24 are adjacent to the frame 22 on the right side (arrow Y2 side). Further, in the upper swing body 3, the frame 23 is adjacent to the rear side (arrow X2 side) of the frame 24. The frame 23 is arranged between the frame 24 and the cover 13 in the front-rear direction of the upper swing body 3. The upper surfaces of the frames 23 and 24 are exposed to the outside in a state of facing the vertically upper side.

In the present embodiment, the frame 23 serves as an exterior part of the hydraulic oil tank, and the hydraulic oil is stored inside the frame 23. Therefore, a space for storing the hydraulic oil is formed between the base 11 and the upper wall of the frame 23 in the vertical direction. Further, the frame 24 serves as an exterior part of the fuel tank, and the fuel is stored inside the frame 24. Therefore, a space for storing fuel is formed between the base 11 and the upper wall of the frame 24 in the vertical direction.

Further, in the present embodiment, the upper surfaces of the frames 21 to 24 are arranged on the same or substantially the same plane with respect to each other. In the upper revolving superstructure 3, the revolving superstructure upper surface 20 is formed by the upper surfaces of the frames 21 to 24. The revolving superstructure upper surface 20 is exposed to the outside in a state of facing the upper side vertically in the upper revolving superstructure 3. In the upper revolving superstructure 3, the revolving superstructure upper surface 20 is adjacent to the front side (arrow X1 side) of the upper wall of the cover 13. The revolving superstructure upper surface 20 forms a scaffold for a worker in maintenance work such as the engine room and the pump room described above.

On the revolving superstructure upper surface 20, both outer edge portions (both outer edges) E1 and E2 in the width direction of the upper revolving superstructure 3 are formed. The outer edge portion E1 is an outer edge portion on the side where the cab 12 is located with respect to the working device 5 on the upper surface 20 of the revolving structure, and the outer edge portion E2 is on the opposite side of the cab 12 with the working device 5 sandwiched on the upper surface 20 of the revolving structure. Is the outer edge of. And in this embodiment, the outer edge part E1 is an outer edge part on the left side, and the outer edge part E2 is an outer edge part on the right side. Therefore, the outer edge portions E1 and E2 are located on opposite sides of the working device 5 with respect to each other in the width direction of the upper swing body 3. Further, in the present embodiment, the outer edge portion (outer edge) E1 is formed by the frame 21, and the outer edge portion (outer edge) E2 is formed by the frames 23 and 24.

In addition, the upper swing body 3 is provided with stairs 26 used to move up and down to the upper surface 20 of the swing body. The stairs 26 are arranged on the opposite side of the cab 12 with the working device 5 interposed therebetween in the width direction of the upper swing body 3. In the upper swing body 3 of the present embodiment, the stairs 26 are adjacent to the frame 24 on the front side.

Further, in the present embodiment, the staircase 26 is formed by the frame 27 and the protruding member 28. The frame 27 is installed on the base 11, and the protruding member 28 projects from the front end surface of the base 11 to the front side of the upper swing body 3. Further, the frame 27 is arranged between the projecting member 28 and the frame 24 in the front-rear direction of the upper swing body 3. In the present embodiment, the frame 27 serves as an exterior part of the tool box, and tools and the like are stored inside the frame 27. Therefore, a space for accommodating tools and the like is formed between the base 11 and the upper wall of the frame 27 in the vertical direction.

FIG. 4 shows the configuration of the outer edge portion E2 on the opposite side of the cab 12 and the vicinity thereof on the upper surface 20 of the revolving structure with the working device 5 interposed therebetween. Here, FIG. 4 is a perspective view and shows a state of the upper swing body 3 as viewed from the inside in the width direction. As shown in FIGS. 1 to 4, the stopper 31 is attached to the frame 23 on the upper surface 20 of the revolving structure. The stopper 31 forms a slip stopper from the upper surface 20 of the revolving structure in the maintenance work of the engine room and the pump room. In the present embodiment, the stopper 31 has an L shape or a substantially L shape when viewed from the vertically upper side.

The stopper 31 includes extension portions 32 and 33. The extending portion 32 is formed in a plate shape whose thickness direction matches or substantially matches the width direction of the upper swing body 3. The extending portion 32 extends along the outer edge E2 of the upper surface 20 of the revolving superstructure and extends along the front-rear direction of the upper revolving superstructure 3. Then, at the outer edge portion E2 of the revolving superstructure upper surface 20 of the upper revolving superstructure 3, the extending portion 32 extends rearward to the rear end of the frame 23, that is, to the boundary between the frame 23 and the cover 13. It Further, the extending portion 32 extends vertically upward from the outer edge portion E2 of the upper surface 20 of the revolving structure. The dimension of the extension 32 in the direction along the outer edge E2 of the revolving superstructure upper surface 20 (the front-back direction of the upper revolving superstructure 3) is larger than the dimension of the extension 32 in the vertical direction.

The extending portion 33 is formed in a plate shape whose thickness direction matches or substantially matches the front-back direction of the upper swing body 3. The extending portion 33 extends along the boundary between the frame 23 and the cover 13, and extends along the width direction of the upper swing body 3. Then, in the extension portion 33, one end in the width direction of the upper swing body 3 is continuous with the rear end of the extension portion 32. The extending portion 33 extends vertically upward from the boundary between the frame 23 and the cover 13. The dimension of the extension 33 in the width direction of the upper swing body 3 is larger than the dimension of the extension 33 in the vertical direction.

A stopper 35 is attached to the frame 24 on the upper surface 20 of the revolving structure. The stopper 35 forms a slip stopper from the upper surface 20 of the revolving structure in the maintenance work of the engine room, the pump room, and the like. In this embodiment, the stopper 35 is attached to the upper surface of the frame 24, that is, the upper surface 20 of the revolving structure, with the relay plates 36 and 37 interposed therebetween. Further, on the upper surface 20 of the revolving structure of the upper revolving structure 3, the stopper 35 is arranged on the front side with respect to the stopper 31.

The stopper 35 is formed in a plate shape whose thickness direction matches or substantially matches the width direction of the upper swing body 3. Further, the stopper 35 extends along the outer edge portion E2 of the upper surface 20 of the revolving structure and extends along the front-rear direction of the upper revolving structure 3. The stopper 35 extends vertically upward from the outer edge portion E2 of the upper surface 20 of the revolving structure. The size of the stopper 35 in the direction along the outer edge E2 of the upper surface 20 of the revolving structure (the front-rear direction of the upper revolving structure 3) is larger than the size of the stopper 35 in the vertical direction.

In this embodiment, the camera unit 40 including the camera 41 is attached to the upper end of the stopper 35. That is, the camera 41 can be attached to the stopper 35. The camera 41 may be removable from the stopper 35.

FIG. 5 shows the camera unit 40 and its vicinity in the upper swing body 3. FIG. 5 shows a state in which the camera unit 40 and its vicinity are viewed from the outside in the width direction of the upper swing body 3, and in the present embodiment, the state is viewed from the right side of the upper swing body 3. 6 and 7 show the structure of the camera unit 40. FIG. 6 shows a state in which only a camera cover 48, which will be described later, is detached from other parts in the camera unit 40, and FIG. 7 shows the camera unit 40 disassembled for each part.

As shown in FIGS. 5 to 7, the camera unit 40 includes holders 43 and 45 in addition to the camera 41. The camera 41 is sandwiched between the holder members 43 and 45 and held between the holder members 43 and 45. The holder member 43 is fixed to the holder member 45 via screws 46A and 46B.

The camera unit 40 also includes a connecting member 47, a camera cover 48, and a plate 55. The connecting member 47 is attached to the stopper 35 via bolts 56A and 56B. When the connecting member 47 is attached to the stopper 35, the connecting member 47 contacts the inner surface of the stopper 35. That is, the connecting member 47 contacts the stopper 35 from the inside in the width direction of the upper swing body 3. In this embodiment, holes 63A and 63B are formed in the stopper 35. Each of the holes 63A and 63B penetrates the stopper 35 in the width direction of the upper swing body 3 (thickness direction of the stopper 35). The connecting member 47 is attached to the stopper 35 by inserting the bolts 56A and 56B into the corresponding ones of the holes 63A and 63B.

The holder members 43 and 45 are attached to the connecting member 47 via bolts 57A and 57B. Further, the camera unit 40 is provided with a nut 61A and a washer 62A corresponding to the bolt 57A, and a nut 61B and a washer 62B corresponding to the bolt 57B. When the holder members 43 and 45 are attached to the connecting member 47, the plate 55 is sandwiched between the holder member 43 and the connecting member 47. The camera cover 48 is attached to the connecting member 47 via bolts 58A and 58B.

As described above, the camera unit 40 including the camera 41 is attached to the upper end of the stopper 35. In the state where the camera unit 40 is attached to the stopper 35, the camera 41 is arranged outside the stopper 35 in the width direction of the upper swing body 3. A cable 42 is connected to the camera 41. As shown in FIG. 4 and the like, the cable 42 extends on the revolving superstructure upper surface 20 of the upper revolving superstructure 3. The camera 41 is electrically connected to an image processing device (not shown) mounted on the hydraulic excavator 1 via a cable 42.

The camera 41 captures an image of the area on the opposite side of the cab 12 in the width direction of the upper swing body 3 around the hydraulic excavator 1. Then, a signal indicating the information captured by the camera 41 is transmitted from the camera 41 to the image processing apparatus via the cable 42. Then, the image processing device, based on the transmitted signal, generates an image around the hydraulic excavator 1 showing the situation of the region on the side opposite to the cab 12 in the width direction of the upper swing body 3. Then, the image processing apparatus displays the generated image on a display screen (not shown) inside the cab 12 or the like. As a result, the operator can visually recognize the condition of the area on the side opposite to the cab 12 in the width direction of the upper swing body 3 around the hydraulic excavator 1 inside the cab 12.

Further, as shown in FIG. 1 to FIG. 4 and the like, in the upper swing body 3, handrails 51 and 52 extend from the upper surface 20 of the swing body toward the upper side in the vertical direction. In the upper revolving structure, the handrail 53 extends vertically upward from the upper surfaces of the revolving structure upper surface 20 and the stairs 26. In the present embodiment, the handrails 51, 52, 53 are arranged in this order from the rear side of the upper swing body 3.

On the revolving superstructure upper surface 20 of the upper revolving superstructure 3, the handrails 51 and 52 are arranged near the outer edge portion E2. However, the handrails 51 and 52 are located inside the camera unit 40, the extending portion 32 of the stopper 31, and the stopper 35 in the width direction of the upper swing body 3. Therefore, the camera unit 40 (camera 41) is arranged outside the handrail 52 in the width direction of the upper swing body 3. Further, the upper ends of the handrails 51 to 53 are positioned vertically above the upper ends of the stoppers 31 and 35 and the camera unit 40. In addition, in this embodiment, the camera unit 40 is arrange|positioned in the front-back direction of the upper swing body 3 in the range where the handrail 52 is extended.

As described above, in the present embodiment, the stopper 35 is attached to the frame 24 at the outer edge portion E2 on the upper surface 20 of the revolving structure on the side opposite to the cab 12 with the working device 5 interposed therebetween. The stopper 35 extends vertically upward from the outer edge portion E2 of the upper surface 20 of the revolving structure, and the camera unit 40 is attached to the upper end portion of the stopper 35. As a result, the camera 41 is arranged apart from the upper surface 20 of the revolving structure in the vertically upper direction. Therefore, during the work on the upper surface 20 of the revolving structure such as the maintenance work of the engine room and the pump room described above, the contact of the worker with the camera 41 is effectively prevented. As a result, workability is secured when working on the upper surface 20 of the revolving structure.

Further, in the state where the camera unit 40 is attached to the stopper 35, the camera 41 is arranged outside the stopper 35 in the width direction of the upper swing body 3. Therefore, when working on the upper surface 20 of the revolving structure, the contact of the operator with the camera 41 is further effectively prevented.

Further, the camera unit 40 (camera 41) is arranged outside the handrail 52 in the width direction of the upper swing body 3. The upper end of the handrail 52 is located vertically above the upper end of the stopper 35 and the camera unit 40. Therefore, the handrail 52 further effectively prevents the worker from coming into contact with the camera 41.

Further, the frames 21 to 24 that form the upper surface 20 of the revolving structure are provided in the hydraulic excavator 1 as members that form a scaffold for workers in maintenance work. Further, the stopper 35 is provided on the hydraulic excavator 1 as a member that forms a slip stopper from the revolving superstructure upper surface 20 during maintenance work. Therefore, the mounting structure of the camera 41 described above is realized without adding any new member.

Further, the stopper 35 extends along the outer edge portion E2 of the upper surface 20 of the revolving structure and extends along the front-rear direction of the upper revolving structure 3. The dimension of the stopper 35 in the direction along the outer edge E2 of the upper surface 20 of the revolving structure (the front-rear direction of the upper revolving structure 3) is larger than the dimension of the stopper 35 in the vertical direction. Since the size of the stopper 35 is large in the direction along the outer edge portion E2 of the upper surface 20 of the revolving structure, the degree of freedom in the mounting position of the camera 41 to the stopper 35 is high in the design stage. Therefore, the camera unit 40 can be attached to the stopper 35 at an appropriate position corresponding to the specifications of the hydraulic excavator 1 to be manufactured, the usage environment, and the like.

Although the hydraulic excavator 1 has been described in the above-described embodiment, the mounting structure of the camera 41 described above can be applied to other construction machines such as a crane. That is, the lower traveling structure 2 and the upper revolving structure 3 are provided in the construction machine to which the mounting structure of the camera 41 described above can be applied. The working device 5 is connected to the upper swing body 3 and the cab 12 is installed. Then, in the upper revolving structure 3, the revolving structure upper surface 20 exposed in a state of facing the vertically upper side is formed by a frame (for example, 24). Then, the stopper 35 is attached to the frame (for example, 24) at the outer edge portion E2 on the opposite side of the cab 12 on the revolving superstructure upper surface 20 with the working device 5 sandwiched between the outer edge portion E2 of the revolving superstructure upper surface 20. It extends vertically upward. The camera 41 can be attached to the upper end of the stopper 35.

It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified at the stage of implementation without departing from the spirit of the invention. Further, the respective embodiments may be appropriately combined and implemented, in which case the combined effects can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent features. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, if the problem can be solved and the effect can be obtained, the structure in which the constituent elements are deleted can be extracted as the invention.

DESCRIPTION OF SYMBOLS 1... Hydraulic excavator, 2... Lower traveling body, 3... Upper swing body, 5... Working device, 12... Cab, 20... Revolving body upper surface, 21-24, 27... Frame, 26... Stairs, 31,35... Stopper, 40... Camera unit, 41... Camera, E1, E2... Outer edge.

Claims (3)

An undercarriage,
An upper revolving structure provided on the vertically upper side of the lower traveling structure so as to be rotatable with respect to the lower traveling structure, and having a revolving structure upper surface exposed to the outside in a state of facing the vertically upper direction, and the revolving structure upper surface is , An upper revolving structure that forms a scaffold for maintenance work,
A working device connected to the upper revolving structure and revolving together with the upper revolving structure,
A cab installed on the upper swing body,
A frame forming the upper surface of the revolving structure in the upper revolving structure;
A stopper which is attached to the frame at an outer edge portion of the upper surface of the revolving structure opposite to the cab with the working device interposed therebetween and which extends vertically upward from the outer edge portion of the upper surface of the revolving structure. A stopper that can attach a camera to the upper end while forming a non-slip from the upper surface of the revolving structure,
A construction machine equipped with. The stopper is formed in a plate shape whose thickness direction matches the width direction of the upper revolving superstructure, and extends along the outer edge of the upper surface of the revolving superstructure.
The dimension of the stopper in the direction along the outer edge of the upper surface of the revolving structure is larger than the dimension of the stopper in the vertical direction,
The construction machine according to claim 1. The upper revolving structure is provided with stairs used to move up and down to the upper surface of the revolving structure,
The stairs are provided on the opposite side of the cab across the working device,
The construction machine according to claim 1 or 2.