Detection unit mounting structure and work machine

Abstract

To provide a detection portion attachment structure and a work machine capable of improving workability.SOLUTION: A detection portion attachment structure comprises: a plurality of detection portions 41, 42 provided at least two places including a side face side and a rear face side of a work machine and detecting the periphery of the work machine; and a first attachment member 100 supported by a frame of the work machine and capable of attaching at least two of the plurality of detection portions 41, 42. The first attachment member 100 is attached to the frame at least two places including the side face side and the rear face side of the work machine.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a detector mounting structure and a work machine. [Background technology]

[0002] 2. Description of the Related Art Known work machines (work vehicles) such as hydraulic excavators are equipped with a plurality of cameras on the rear and sides of the vehicle body so that the driver can visually recognize obstacles present around the vehicle. For example, Patent Document 1 listed below discloses a configuration including multiple cameras, including a camera C3 mounted on the lower right side of the upper rotating body to capture images of the right rear of the upper rotating body, a camera C4 mounted in the center of the lower rear of a counterweight located behind the upper rotating body to capture images of the rear of the upper rotating body, and a camera C5 mounted on the lower left side of the upper rotating body to capture images of the left rear of the upper rotating body. For example, Patent Document 2 listed below discloses a configuration including multiple cameras, including a left rear camera provided at the left rear of the upper rotating body to capture images of the left side of the hydraulic excavator, a right rear camera provided at the right rear of the upper rotating body to capture images of the right rear of the hydraulic excavator, and a rear camera provided in approximately the center of the rear of the upper rotating body to capture images of the rear of the hydraulic excavator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2016 / 174977 [Patent Document 2] International Publication No. 2016 / 047806 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of Patent Document 1, camera C3 is provided on the lower right side of the upper rotating body, camera C4 is provided in the center of the lower rear of the counterweight, and camera C5 is provided on the lower left side of the upper rotating body. In the case of Patent Document 2, the left rear camera is provided at the left rear of the upper rotating body, the right rear camera is provided at the right rear of the upper rotating body, and the rear camera is provided approximately in the center of the rear of the upper rotating body. In Patent Documents 1 and 2, when installing each camera at a predetermined position, it is necessary to attach each camera to the vehicle body via a different mounting member. Since mounting members are required according to the number of cameras to be installed, there is room for improvement in terms of improving operability.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a detector mounting structure and a working machine that can improve workability. [Means for solving the problem]

[0006] A detector mounting structure according to one aspect of the present invention includes a plurality of detectors provided at at least two locations, including a side surface and a rear surface of a work machine, for detecting the surroundings of the work machine, and a first mounting member supported by a frame of the work machine and capable of mounting at least two of the plurality of detectors, the first mounting member being attached to the frame at least two locations, including a side surface and a rear surface of the work machine. The plurality of detection units include a left camera that captures an image to the left of the work machine, and further includes a second mounting member that is supported by a tilt floor that is movable between a seating position and a tilt position relative to the frame and to which the left camera can be attached. . Effect of the Invention

[0007] According to the above aspect, workability can be improved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a side view of a hydraulic excavator according to an embodiment. [Diagram 2] FIG. 2 is a top view of the hydraulic excavator according to the embodiment. [Diagram 3] FIG. 4 is a perspective view showing a tilt operation of the cab according to the embodiment, as viewed from the right rear. [Figure 4] FIG. 2 is a perspective view of the cab according to the embodiment in a tilted up state, as viewed from the upper left. [Diagram 5] 5 is a rear view showing an opening and closing operation of the right side cover according to the embodiment. FIG. [Figure 6]1 is a perspective view from the right rear showing the opening and closing operation of the soil cover according to the embodiment. FIG. [Figure 7] FIG. 2 is a top view showing the arrangement of cameras according to the embodiment. [Figure 8] FIG. 4 is a rear view showing the arrangement of cameras according to the embodiment. [Figure 9] FIG. 4 is a perspective view of the periphery of the first mounting member according to the embodiment, seen from the right rear. [Figure 10] FIG. 4 is a perspective view of the first mounting member according to the embodiment, as viewed from the left front. [Figure 11] FIG. 2 is a perspective view of the periphery including the right camera according to the embodiment, as viewed from the right rear. [Figure 12] FIG. 2 is a perspective view of the periphery including the rear camera according to the embodiment, as viewed from the right rear. [Figure 13] FIG. 4 is a perspective view of the periphery including the connecting member according to the embodiment, as viewed from the right front. [Figure 14] FIG. 4 is a perspective view for explaining the arrangement of wiring bundles of the right camera and the rear camera according to the embodiment. [Figure 15] FIG. 2 is a perspective view of the periphery including the left camera according to the embodiment, as viewed from the left front. [Figure 16] FIG. 4 is a perspective view of a second mounting member according to the embodiment, as viewed from the right front. [Figure 17] FIG. 4 is a perspective view for explaining the arrangement of wiring for the left camera according to the embodiment. [Figure 18] FIG. 11 is a perspective view of the periphery of a first mounting member according to a modified example of the embodiment, as viewed from the right rear. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment, a hydraulic excavator will be described as an example of a work machine (work vehicle). For example, the hydraulic excavator in the embodiment is a small hydraulic excavator used at a construction site such as a road where pedestrians pass.

[0010] <Work machinery> As shown in FIG. 1, a hydraulic excavator 1 as a working machine includes a self-propelled lower travelling body 2, an upper rotating body 3 rotatably provided on the lower travelling body 2, and a working implement 4 which can bend and rise with respect to the upper rotating body 3. Hereinafter, the forward direction, reverse direction and vehicle width direction of the hydraulic excavator 1 will be referred to as the "front of the vehicle (one side in the front-rear direction of the vehicle)", the "rear of the vehicle (the other side in the front-rear direction of the vehicle)" and the "vehicle width direction". The vehicle width direction may also be referred to as the "left side (one side in the vehicle width direction)" or the "right side (the other side in the vehicle width direction)". The right side with respect to the forward direction of the hydraulic excavator 1 is referred to as the right side, and the left side with respect to the forward direction of the hydraulic excavator 1 is referred to as the left side. The up-down direction, upward and downward directions when the hydraulic excavator 1 is arranged on a horizontal plane will be referred to simply as the "up-down direction", "up" and "down".

[0011] As shown in Fig. 2, the work implement 4 is disposed offset to the right with respect to the center of the upper rotating body 3 in the vehicle width direction. As shown in Fig. 1, the work implement 4 includes a boom 10, an arm 11, a bucket 12, a boom cylinder 13, an arm cylinder 14, and a bucket cylinder 15. A base end of the boom 10 is rotatably connected to the upper rotating body 3. A tip end of the boom 10 is rotatably connected to the base end of the arm 11. A tip end of the arm 11 is rotatably connected to the bucket 12. For example, the boom cylinder 13, the arm cylinder 14, and the bucket cylinder 15 are hydraulic cylinders driven by hydraulic oil discharged from a hydraulic pump (not shown).

[0012] The upper rotating body 3 includes a cab base 20 rotatably connected to the lower traveling body 2, a cab 21 provided on the cab base 20, a right side cover 22 (see FIG. 3) attached to the right rear part of the upper rotating body 3, a soil cover 23 (see FIG. 3) attached to the right front part of the upper rotating body 3, a rear cover 24 attached to the rear part of the upper rotating body 3, a frame 25 forming the skeleton of the upper rotating body 3, and a detection unit mounting structure 40 for detecting the surroundings of the hydraulic excavator 1. In the top view of FIG. 2, the left and right side parts and the rear part of the upper rotating body 3 have shapes that curve outwardly from the vehicle body.

[0013] As shown in FIG. 2, the cab 21 is disposed on the left side of the upper rotating body 3. As shown in FIG. 3, various devices 27, such as an engine and a hydraulic pump, are provided in the space below the cab 21. The cab 21 can rotate in the direction of the arrow TU (tilt up direction) and the direction of the arrow TD (tilt down direction). Hereinafter, the initial position of the cab 21 before it rotates in the direction of the arrow TU is referred to as the "seating position". Hereinafter, the position where the cab 21 is rotated from the seating position in the direction of the arrow TU by a predetermined rotation angle is referred to as the "tilt position". The operator rotates the cab 21 in the direction of the arrow TU by using an operating power such as a hydraulic cylinder or a crane. This exposes the upper side of the various devices 27.

[0014] The rear cover 24 can be rotated in the direction of arrow B1 (opening direction) and the direction of arrow B2 (closing direction). For example, when inspecting or maintaining various devices 27 (e.g., engine inspection), the operator opens the rear cover 24 in the direction of arrow B1.

[0015] 5, the right side cover 22 can be rotated in the direction of the arrow D1 (opening direction) and the direction of the arrow D2 (closing direction). Various devices 28 such as a battery, a radiator, and an oil cooler are provided in the space on the rear right side of the cab 21. For example, when inspecting or maintaining (e.g., cleaning) the various devices 28, the operator opens the right side cover 22 in the direction of the arrow D1.

[0016] 6, the soil cover 23 can be rotated in the direction of the arrow F1 (opening direction) and in the direction of the arrow F2 (closing direction). Various tanks 29, such as a fuel tank and a hydraulic oil tank, are provided in the space on the front right side of the cab 21. For example, when refilling the various tanks 29, the operator opens the soil cover 23 in the direction of the arrow F1.

[0017] As shown in Fig. 1, the cab 21 includes a top panel 30 extending horizontally. A monitor 31 is provided on the front lower portion of the top panel 30. For example, the monitor 31 is an input / output device such as a touch panel. The monitor 31 can combine and display images captured by a plurality of cameras 41 to 43 (see Fig. 7; the rear camera 42 and the left camera 43 are shown in Fig. 1).

[0018] The monitor 31 may be capable of displaying the surrounding conditions of the hydraulic excavator 1 acquired by a plurality of cameras as an overhead image and a single camera image. The monitor 31 may also be capable of displaying various information including the status of the engine, hydraulic pump, etc. For example, the monitor 31 may be capable of displaying machine gauge displays such as engine water temperature, oil temperature, remaining fuel level, etc., fault information displays showing equipment abnormalities, etc., and a user menu display for the operator to make various settings.

[0019] A lamp 32 is provided at the rear of the cab 21. The lamp 32 emits light when an obstacle (e.g., a person) is detected by the multiple cameras. For example, the light emission level (alarm level) of the lamp 32 may be changed according to the distance between the hydraulic excavator 1 and the obstacle.

[0020] A buzzer 33 is built into the rear of the cab 21. The buzzer 33 sounds an alarm when an obstacle (e.g., a person) is detected by the multiple cameras. For example, the buzzer 33 may change the sound level (alarm level) depending on the distance between the hydraulic excavator 1 and the obstacle.

[0021] <Detection unit mounting structure> As shown in FIG. 7, the detection unit mounting structure 40 includes multiple (e.g., three in this embodiment) cameras 41-43 (detection units) that detect the surroundings of the hydraulic excavator 1, a first mounting member 100 to which two of the three cameras 41-43 can be mounted, and a second mounting member 200 to which the remaining camera can be mounted.

[0022] <Detection unit> The three cameras 41-43 are a right camera 41 that images the right side of the hydraulic excavator 1, a rear camera 42 that images the rear side of the hydraulic excavator 1, and a left camera 43 that images the left side of the hydraulic excavator 1. The right camera 41 is provided on the right side of the hydraulic excavator 1. The rear camera 42 is provided on the rear side of the hydraulic excavator 1. The left camera 43 is provided on the left side of the hydraulic excavator 1. For example, each of the cameras 41-43 is a CCD (Charge-Coupled Device). Each of the cameras 41-43 may have a wide dynamic range function.

[0023] In the top view of Fig. 7, the right camera 41, the rear camera 42, and the left camera 43 are each disposed inside the vehicle body relative to the outer periphery of the upper rotating body 3. In the top view of Fig. 7, the right camera 41 and the rear camera 42 are each disposed inside the vehicle body relative to the first mounting member 100. In the top view of Fig. 7, the left camera 43 is disposed inside the vehicle body relative to the second mounting member 200.

[0024] 7, the horizontal viewing range AH ​​(horizontal angle of view AH) of each of the cameras 41 to 43 is, for example, greater than or equal to 100° and less than or equal to 180°. Since the horizontal angles of view AH of adjacent cameras (the right camera 41 and the rear camera 42, and the rear camera 42 and the left camera 43) overlap, the left and right side and rear side of the hydraulic excavator 1 can be suitably imaged.

[0025] In the rear view of FIG. 8, the viewing field range AP (vertical angle of view AP) in the height direction of each of the cameras 41-43 is, for example, 60° or more and 140° or less. FIG. 8 illustrates only the vertical angle of view AP of the right camera 41. The cameras 41-43 are disposed in a height range HR of 1 m or more and 2 m or less in the vertical direction. In this embodiment, the cameras 41-43 are disposed in a height range of 1.4 m or more and 1.6 m or less in the vertical direction. Therefore, each of the cameras 41-43 can suitably capture an image of an obstacle (e.g., a person) approaching the hydraulic excavator 1.

[0026] <First mounting member> As shown in FIG. 9, the first mounting member 100 is supported by the frame 25 of the hydraulic excavator 1. For example, the first mounting member 100 is detachably attached to the frame 25 by a fastening member such as a bolt. In a top view of FIG. 7, the first mounting member 100 overlaps with the right rear part of the upper rotating body 3 in a top view. The first mounting member 100 is disposed so as to avoid the working machine 4. The first mounting member 100 is capable of mounting a right camera 41 and a rear camera 42. The first mounting member 100 is attached to the frame 25 at least two places including the right side and rear side of the hydraulic excavator 1. The first mounting member 100 is formed so as to straddle the right side and rear side of the hydraulic excavator 1.

[0027] 10, the first mounting member 100 includes a right rear plate 110, a right rear pipe 120, a front connecting bracket 130, and a rear connecting bracket 140. For example, the components of the first mounting member 100 are formed of metal.

[0028] The right rear plate 110 is a member to which the right camera 41 and the rear camera 42 (see FIG. 7) are attached. The right rear plate 110 is formed in a plate shape extending horizontally. The right rear plate 110 has a curved shape in a plan view so as to fit along the right outer periphery of the upper rotating body 3 (see FIG. 7). The right rear plate 110 is formed so as to straddle the right side and rear side of the upper rotating body 3 (see FIG. 7).

[0029] 11, the right camera 41 is housed in a box-shaped right camera case 51. The right camera 41 is detachably fixed to the right camera case 51 by a fastening member such as a bolt (not shown). 12, the rear camera 42 is housed in a box-shaped rear camera case 52. The rear camera 42 is detachably fixed to the rear camera case 52 by a fastening member such as a bolt (not shown).

[0030] As shown in FIG. 10, the right rear plate 110 includes a right case mounting portion 111 to which the right camera case 51 (see FIG. 11) is attached, a rear case mounting portion 112 to which the rear camera case 52 (see FIG. 12) is attached, and a bridging portion 113 that bridges between the right case mounting portion 111 and the rear case mounting portion 112.

[0031] The right case mounting portion 111 has an insertion hole 111h for a bolt 111j (see FIG. 11) for mounting the right camera case 51. The upper wall of the right camera case 51 has a female thread portion (not shown) into which the bolt 111j can be screwed. A plurality of insertion holes 111h (for example, in this embodiment, two are provided at intervals in the vehicle width direction) are provided in the right case mounting portion 111. For example, with the right camera case 51 placed on the lower surface of the right case mounting portion 111, the bolt 111j is passed through the insertion hole 111h from above the right case mounting portion 111 and screwed into the female thread portion of the upper wall of the right camera case 51. This allows the right camera case 51 to be mounted to the right case mounting portion 111.

[0032] The rear case mounting portion 112 has an insertion hole 112h for a bolt 112j (see FIG. 12) for mounting the rear camera case 52. The upper wall of the rear camera case 52 has a female thread portion (not shown) into which the bolt 112j can be screwed. A plurality of insertion holes 112h (for example, in this embodiment, two at intervals in the vehicle front-rear direction) are provided in the rear case mounting portion 112. For example, with the rear camera case 52 placed on the lower surface of the rear case mounting portion 112, the bolt 112j is passed through the insertion hole 112h from above the rear case mounting portion 112 and screwed into the female thread portion of the upper wall of the rear camera case 52. This allows the rear camera case 52 to be mounted to the rear case mounting portion 112.

[0033] The bridging portion 113 bridges between the rear end portion of the right case mounting portion 111 and the right end portion of the rear case mounting portion 112. The bridging portion 113 extends in a straight line that is inclined so as to be positioned inward in the vehicle width direction from the rear end portion of the right case mounting portion 111 toward the rear of the vehicle in a top view, and then is connected to the right end portion of the rear case mounting portion 112.

[0034] The right rear pipe 120 is a hollow member formed by bending a metal pipe at multiple locations (for example, three locations in this embodiment). The cross-sectional shape of the right rear pipe 120 (a cross-sectional shape cut at a plane perpendicular to the direction in which the right rear pipe 120 extends) is annular. As shown in FIG. 11, the right rear pipe 120 has an inner diameter large enough to allow the wiring 81 of the right camera 41 to pass therethrough. The right rear pipe 120 is joined to the lower surface of the right rear plate 110 by welding.

[0035] As shown in FIG. 9 , the right rear pipe 120 includes a first extending portion 121 extending in the vehicle width direction, a first bent portion 122 (bent portion) curved in an arc shape in a plan view from a right end of the first extending portion 121 toward the rear of the vehicle, a second extending portion 123 extending from a rear end of the first bent portion 122 toward the rear of the vehicle, a second bent portion 124 curved in an arc shape in a plan view from the rear end of the second extending portion 123 toward the rear of the vehicle and inward in the vehicle width direction, a third extending portion 125 extending in a straight line inclined from the rear end of the second bent portion 124 toward the rear of the vehicle so as to be positioned inward in the vehicle width direction, a third bent portion 126 curved in an arc shape in a plan view from the rear end of the third extending portion 125 toward the inward in the vehicle width direction, and a fourth extending portion 127 extending inward in the vehicle width direction from the inner end of the third bent portion 126 in the vehicle width direction.

[0036] A portion of the right rear pipe 120 on the outside of the vehicle body (specifically, the right end of the first extension portion 121, the first bent portion 122, the second extension portion 123, the second bent portion 124, the third extension portion 125, the third bent portion 126, and the fourth extension portion 127) is disposed along the outer edge of the right rear plate 110. For example, the right rear pipe 120 is joined by welding to the underside of the right rear plate 110 over the portion along the outer edge of the right rear plate 110.

[0037] The right case attachment portion 111 of the right rear plate 110 is provided so as to partially overlap the first bent portion 122 in a plan view. The right camera case 51 (see FIG. 11 ) that houses the right camera 41 is connected to the first bent portion 122 via the right case attachment portion 111. In other words, the right camera 41 is attached to the first bent portion 122.

[0038] 10, the front connecting bracket 130 is a member formed by joining multiple (for example, two in this embodiment) metal plates. The front connecting bracket 130 includes a first front connecting plate 131 that is L-shaped when viewed from the front-rear direction of the vehicle, and a second front connecting plate 132 that stands up from an upper surface of the first front connecting plate 131.

[0039] The lower part of the first front connecting plate 131 has an outer shape that is inclined so as to be positioned upward as it approaches the rear of the vehicle when viewed from the vehicle width direction. The lower part of the first front connecting plate 131 has an insertion hole 131h for a bolt (not shown) for attaching the first front connecting plate 131 to the frame 25 (see FIG. 13). A plurality of insertion holes 131h (for example, in this embodiment, two are provided at an interval along the inclination of the lower part of the first front connecting plate 131) are provided in the first front connecting plate 131. The frame 25 has a female thread portion (not shown) into which a bolt can be screwed. The exterior cover 60 (see FIG. 13) that covers the frame 25 has an insertion hole (not shown) into which a bolt can be inserted.

[0040] For example, with the first front connecting plate 131 arranged along the exterior cover 60 (see FIG. 13) covering the frame 25, bolts are passed through each insertion hole (the insertion hole 131h at the lower part of the first front connecting plate 131 and the insertion hole of the exterior cover 60) from the inside in the vehicle width direction of the first front connecting plate 131 and screwed into the female threaded portion of the frame 25. This makes it possible to attach the first front connecting plate 131 to the frame 25. In this embodiment, the female threaded portion of the frame 25 is an existing one used for attaching the exterior cover 60, so that the first front connecting plate 131 and the exterior cover 60 can be fastened together to the frame 25 without providing a new female threaded portion in the frame 25.

[0041] 10, the second front connecting plate 132 has an outer shape larger than the first extending portion 121 of the right rear pipe 120 when viewed in the vehicle width direction. A lower end of the second front connecting plate 132 is joined to an upper surface of the first front connecting plate 131 by welding. An inner end of the first extending portion 121 in the vehicle width direction is joined to a right side surface of the second front connecting plate 132 by welding. A portion of the first extending portion 121 that overlaps with the upper surface of the first front connecting plate 131 in a plan view is joined to the upper surface of the first front connecting plate 131 by welding.

[0042] The rear connecting bracket 140 is a member formed by joining multiple (for example, four in this embodiment) metal plates. The rear connecting bracket 140 includes a first rear connecting plate 141 that is L-shaped when viewed from the vehicle width direction, a second rear connecting plate 142 that stands forward from the front surface of the first rear connecting plate 141, a third rear connecting plate 143 that is L-shaped in a plan view, and a rear flange portion 144 (see FIG. 12) that is rectangular in a plan view.

[0043] The first rear connecting plate 141 has an opening 141a that exposes a lens portion of the rear camera 42 (see FIG. 12). The lower portion of the first rear connecting plate 141 has a bifurcated shape (U-shape) that branches forward in a plan view. The lower portion of the first rear connecting plate 141 has an insertion hole 141h for a bolt 141j (see FIG. 12) for attaching the first rear connecting plate 141 to the frame 25. A plurality of insertion holes 141h (for example, two in this embodiment, one at each tip of the bifurcated branch portion 141b) are provided in the lower portion of the first rear connecting plate 141. The frame 25 (see FIG. 12) has a female thread portion (not shown) into which the bolt 141j can be screwed. The exterior cover 60 that covers the frame 25 has an insertion hole (not shown) into which the bolt 141j can be inserted. As shown in FIG. 12, the exterior cover 60 has a recess 61 into which the branch portion 141b of the first rear connecting plate 141 is inserted.

[0044] For example, with the branch portion 141b of the first rear connecting plate 141 placed in the recess 61 of the exterior cover 60 covering the frame 25, the bolt 141j is passed through each insertion hole (the insertion hole 141h of the branch portion and the insertion hole of the exterior cover 60) from above the branch portion 141b and screwed into the female thread portion of the frame 25. This makes it possible to attach the first rear connecting plate 141 to the frame 25. In this embodiment, the female thread portion of the frame 25 is an existing one for attaching the exterior cover 60, so that the first rear connecting plate 141 and the exterior cover 60 can be fastened together to the frame 25 without providing a new female thread portion in the frame 25.

[0045] 10, the second rear connecting plate 142 has an outer shape larger than the fourth extending portion 127 of the right rear pipe 120 when viewed from the vehicle width direction. A rear end portion of the second rear connecting plate 142 is joined to the front surface of the first rear connecting plate 141 by welding. An inner end portion in the vehicle width direction of the fourth extending portion 127 is joined to the right side surface of the second rear connecting plate 142 by welding. A portion of the fourth extending portion 127 that overlaps with the front surface of the first rear connecting plate 141 when viewed from the vehicle front-rear direction is joined to the front surface of the first rear connecting plate 141 by welding.

[0046] A rear end of the third rear connecting plate 143 is joined by welding to the front surface of the first rear connecting plate 141. The third rear connecting plate 143 has an insertion hole 143h for a bolt 143j (see FIG. 12) for attaching the rear camera case 52. A right wall of the rear camera case 52 (see FIG. 12) has a female thread portion (not shown) into which the bolt 143j can be screwed.

[0047] For example, with the rear camera case 52 placed on the underside of the rear case attachment part 112, the bolt 143j is passed through the insertion hole 143h from the right side of the third rear connecting plate 143 and screwed into the female thread portion of the rear camera case 52. This allows the rear camera case 52 to be attached to the third rear connecting plate 143.

[0048] 12, a front end of the rear flange 144 is joined by welding to the rear surface of the first rear connecting plate 141. The rear flange 144 is disposed above the opening 141a of the first rear connecting plate 141. The rear flange 144 functions as a visor for the lens portion of the rear camera 42 exposed from the opening 141a.

[0049] 13, the detector mounting structure 40 of this embodiment further includes a connecting member 150 that connects the first mounting member 100 and the frame 25. The connecting member 150 extends in a crank shape in the vertical direction when viewed from the vehicle width direction. Specifically, the connecting member 150 includes an upper connecting portion 151 arranged above the first mounting member 100, a lower connecting portion 152 arranged below the upper connecting portion 151, and an L-shaped extending portion 153 that bridges between the upper connecting portion 151 and the lower connecting portion 152.

[0050] The L-shaped extension 153 is formed in an L shape extending in the up-down direction when viewed from the vehicle width direction. An upper end of the L-shaped extension 153 is connected to a front end of the upper connector 151. A lower front end of the L-shaped extension 153 is connected to an upper end of the lower connector 152.

[0051] The upper connecting portion 151 is formed in a plate shape extending horizontally. The upper connecting portion 151 overlaps a part of the right rear pipe 120 of the first mounting member 100 (a part of the first extending portion 121 closer to the first bent portion 122) in a top view. The upper connecting portion 151 has an insertion hole (not shown) for a bolt 151j for attaching the upper connecting portion 151 to the first extending portion 121. As shown in FIG. 10, a nut 154 is welded to an upper end of the part of the first extending portion 121 closer to the first bent portion 122.

[0052] For example, with the upper connecting portion 151 disposed on the upper surface of the nut 154, the bolt 151j is passed through the insertion hole from above the upper connecting portion 151 and screwed into the nut 154. This makes it possible to attach the upper connecting portion 151 of the connecting member 150 to the right rear pipe 120 of the first mounting member 100.

[0053] 13, the lower connector 152 is formed in a plate shape extending along a vertical plane (specifically, a plane including the up-down direction and the vehicle width direction). The lower connector 152 has an insertion hole (not shown) for a bolt 152j for attaching the lower connector 152 to the frame 25. The frame 25 has a female thread portion (not shown) into which the bolt 152j can be screwed. The inner cover 70 covering the frame 25 has an insertion hole (not shown) into which the bolt 152j can be inserted.

[0054] For example, with the lower connecting part 152 disposed on the front surface of the internal cover 70 covering the frame 25, the bolt 152j is passed through each insertion hole (the insertion hole of the lower connecting part 152 and the insertion hole of the internal cover 70) from the front of the lower connecting part 152 and screwed into the female threaded part of the frame 25. This makes it possible to attach the lower connecting part 152 to the frame 25. In this embodiment, since the female threaded part of the frame 25 is an existing one for attaching the internal cover 70, the lower connecting part 152 and the internal cover 70 can be fastened together to the frame 25 without providing a new female threaded part in the frame 25.

[0055] <Wiring layout for right camera and rear camera> As shown in Fig. 11, the wiring 81 of the right camera 41 passes through the internal space of the right rear pipe 120. Then, as shown in Fig. 14, the wiring 81 of the right camera 41 extends together with the wiring 82 of the rear camera 42, and is connected to the control unit 90 provided on the frame 25. The wirings 81, 82 are arranged to avoid a tilt floor 92 (see Fig. 4) that is movable between a seating position and a tilt position with respect to the frame 25.

[0056] Specifically, as shown in FIG. 11, the wiring 81 of the right camera 41 passes through a through hole that opens the rear wall of the right camera case 51 and extends downward from the second extension portion 123 of the right rear pipe 120. Then, the wiring 81 of the right camera 41 passes through a through hole 123h that opens the lower part of the second extension portion 123 and is led to the internal space of the right rear pipe 120. Then, the wiring 81 of the right camera 41 extends along the internal space of the right rear pipe 120 (specifically, the part of the internal space of the right rear pipe 120 that follows the second extension portion 123). Then, the wiring 81 of the right camera 41 passes through a through hole 127h (see FIG. 10) that opens the lower part of the fourth extension portion 127 and is led to the outside of the right rear pipe 120.

[0057] As shown in FIG. 12, the wiring 82 of the rear camera 42 extends toward the front of the rear camera case 52 through a through hole that opens the front wall of the rear camera case 52. The wiring 81 of the right camera 41 led to the outside of the right rear pipe 120 extends toward the front together with the wiring 82 of the rear camera 42. In this embodiment, as shown in FIG. 14, the wiring 81 of the right camera 41 extends toward the front and downward together with the wiring 82 of the rear camera 42, passing between the tilt floor 92 and the right exterior part 94 in the vehicle width direction. Then, the wiring 81 of the right camera 41 and the wiring 82 of the rear camera 42 (hereinafter also referred to as "wiring bundle 85") extend to the vicinity of the pivot shaft 93 of the tilt floor 92. Then, the wiring bundle 85 passes around the pivot shaft 93 and extends toward the internal space of the left side part of the cab base 20. Then, the wiring bundle 85 extends while curving toward the control part 90 provided under the driver's seat. In this manner, the wiring bundle 85 is disposed at a position that does not overlap with the rotation trajectory of the tilt floor 92.

[0058] <Second mounting member> As shown in Fig. 4, the second mounting member 200 is supported by a tilt floor 92 that is movable between a seating position and a tilt position relative to the frame 25. For example, the second mounting member 200 is detachably attached to the tilt floor 92 by a fastening member such as a bolt. In the top view of Fig. 7, the second mounting member 200 overlaps with the left side of the upper rotating body 3. The second mounting member 200 is disposed so as to avoid the work machine 4. The second mounting member 200 can be used to mount the left camera 43. The second mounting member 200 is attached to the tilt floor 92 at multiple points on the left side of the hydraulic excavator 1.

[0059] The second mounting member 200 includes a left bracket 210, a left pipe 220, a front connecting plate 230, and a rear connecting plate 240. For example, the components of the second mounting member 200 are formed from metal.

[0060] 15, the left side bracket 210 is a member to which the left camera 43 is attached. The left side bracket 210 is a member formed by joining multiple (for example, three in this embodiment) metal plates. The left side bracket 210 includes a first attachment plate 211 which is U-shaped opening toward the inside of the vehicle body when viewed from the front-rear direction of the vehicle, a second attachment plate 212 which is L-shaped in plan view, and a left side flange portion 213 which is rectangular in plan view.

[0061] The left camera 43 is housed in a box-shaped left camera case 53 (see FIG. 17). The left camera 43 is detachably fixed to the left camera case 53 by a fastening member such as a bolt.

[0062] The first mounting plate 211 has an upper mounting portion 211a to which the upper wall of the left camera case 53 is attached, a left mounting portion 211b to which the left side wall of the left camera case 53 is attached, and a lower mounting portion 211c to which the tilt floor 92 is attached.

[0063] The upper mounting portion 211a is formed in a plate shape extending horizontally. The upper mounting portion 211a is disposed above the left camera case 53. The vehicle width direction inner portion of the upper mounting portion 211a has a trapezoidal shape in a plan view. The upper mounting portion 211a has an insertion hole 211h (see FIG. 16) for a bolt 211j for mounting the upper wall of the left camera case 53. The upper wall of the left camera case 53 has a female thread portion (not shown) into which the bolt 211j can be screwed. As shown in FIG. 16, a plurality of insertion holes 211h (for example, in this embodiment, two at an interval in the vehicle width direction) are provided in the upper mounting portion 211a.

[0064] For example, with the left camera case 53 placed on the lower surface of the upper mounting portion 211a, the bolt 211j is passed through the insertion hole 211h from above the upper mounting portion 211a and screwed into the female thread portion of the upper wall of the left camera case 53. This allows the upper wall of the left camera case 53 to be attached to the upper mounting portion 211a.

[0065] 15, the left mounting portion 211b is formed in a plate shape extending along a vertical plane (specifically, a plane including the up-down direction and the vehicle front-rear direction). An upper end of the left mounting portion 211b is connected to the outer end of the upper mounting portion 211a in the vehicle width direction. The left mounting portion 211b has an opening 211d that exposes the lens portion of the left camera 43.

[0066] As shown in Fig. 16, a nut 214 is joined by welding to an inner surface of the left mounting portion 211b in the vehicle width direction. The nut 214 is disposed below the opening 211d. As shown in Fig. 17, the left camera case 53 includes a protruding portion 53a that protrudes downward so as to overlap with the nut 214 when viewed from the vehicle width direction. The protruding portion 53a has an insertion hole (not shown) for a bolt 53j for mounting the left camera case 53.

[0067] For example, with the left camera case 53 disposed on the lower surface of the upper mounting portion 211a, the bolt 53j is passed through the insertion hole from the inside in the vehicle width direction of the protruding portion 53a and screwed into the nut 214. This makes it possible to attach the protruding portion 53a of the left camera case 53 to the left mounting portion 211b.

[0068] As shown in Fig. 16, the lower mounting portion 211c is formed in a plate shape extending along the vehicle width direction. As shown in Fig. 15, the left end of the lower mounting portion 211c is connected to the front lower end of the left mounting portion 211b. As shown in Fig. 16, the inner end of the lower mounting portion 211c in the vehicle width direction has an insertion hole 215h for a bolt 215j (see Fig. 17) for mounting the lower mounting portion 211c to the tilt floor 92.

[0069] The tilt floor 92 has a female threaded portion (not shown) into which the bolt 215j can be screwed. An exterior cover 95 (hereinafter also referred to as the "left exterior portion 95") covering the tilt floor 92 has an insertion hole (not shown) into which the bolt 215j can be inserted. A rear portion of the rear connecting plate 240 disposed between the left exterior portion 95 and the lower mounting portion 211c has an insertion hole (not shown) into which the bolt 215j can be inserted.

[0070] For example, with the lower mounting portion 211c disposed on the rear upper surface of the rear connecting plate 240, the bolt 215j is passed through each insertion hole (the insertion hole 215h of the lower mounting portion 211c, the insertion hole of the rear connecting plate 240, and the insertion hole of the left exterior portion 95) from above the lower mounting portion 211c and screwed into the female thread portion of the tilt floor 92. This allows the first mounting plate 211 to be attached to the tilt floor 92. In this embodiment, since the female thread portion of the tilt floor 92 is an existing one for attaching the left exterior portion 95, the first mounting plate 211, the rear connecting plate 240, and the left exterior portion 95 can be fastened together to the tilt floor 92 without providing a new female thread portion in the tilt floor 92.

[0071] As shown in Fig. 16, the second mounting plate 212 is formed in a plate shape extending in the up-down direction. The second mounting plate 212 is disposed between the upper mounting portion 211a and the lower mounting portion 211c of the first mounting plate 211. The upper end portion of the second mounting plate 212 is joined to the lower surface of the upper mounting portion 211a by welding. The rear lower end portion of the second mounting plate 212 is joined to the upper surface of the lower mounting portion 211c by welding.

[0072] A portion of the second mounting plate 212 near the center in the up-down direction has an insertion hole 216h for a U-bolt 217 (see FIG. 15) for attaching the second mounting plate 212 to the left pipe 220. A plurality of insertion holes 216h (for example, in this embodiment, two with an interval in the vehicle front-rear direction) are provided in the second mounting plate 212. The second mounting plate 212 has a protrusion 212a curved forward at a position corresponding to the front of the two insertion holes 216h.

[0073] For example, in a state where the second mounting plate 212 is disposed on the left side of the rear extension portion 221 of the left pipe 220, the U-bolt 217 is disposed from the inside of the rear extension portion 221 in the vehicle width direction. Then, each male thread portion 217j of the U-bolt 217 is passed through each insertion hole 216h of the second mounting plate 212, and each male thread portion 217j is made to protrude to the left side of the second mounting plate 212. Then, the nut 216j is screwed from the left side of the second mounting plate 212 to each male thread portion 217j protruding to the left side of the second mounting plate 212. This allows the second mounting plate 212 to be attached to the rear extension portion 221 of the left pipe 220 via the U-bolt 217.

[0074] 15, an inner end portion in the vehicle width direction of the left side flange portion 213 is joined by welding to a left side surface of the first mounting plate 211 (an outer surface in the vehicle width direction of the left mounting portion 211b). The left side flange portion 213 is disposed above an opening 211d of the left mounting portion 211b. The left side flange portion 213 functions as a visor portion for a lens portion of the left camera 43 exposed from the opening 211d.

[0075] The left pipe 220 is a hollow member in which a metal pipe is bent at multiple locations (for example, three locations in this embodiment). As shown in Fig. 4, the left pipe 220 includes a rear extension portion 221 extending upward from the front of the rear connecting plate 240, a rear bent portion 222 curved in an arc shape upward from the upper end of the rear extension portion 221 when viewed from the vehicle width direction, an upper extension portion 223 extending from the front end of the rear bent portion 222 toward the front of the vehicle, a front bent portion 224 curved in an arc shape downward from the front end of the upper extension portion 223 when viewed from the vehicle width direction, a front extension portion 225 extending downward from the lower end of the front bent portion 224, and a lower bent portion 226 curved in an arc shape backward from the lower end of the front extension portion 225 when viewed from the vehicle width direction.

[0076] The front connecting plate 230 is formed in a plate shape extending in the vertical direction. The rear end of the lower bent portion 226 is joined by welding to the front surface of the vertical center of the front connecting plate 230. The upper and lower ends of the front connecting plate 230 have insertion holes (not shown) for bolts 230j for attaching the front connecting plate 230 to the tilt floor 92. The tilt floor 92 has a female thread portion (not shown) into which the bolt 230j can be screwed. The left exterior portion 95 covering the tilt floor 92 has an insertion hole (not shown) into which the bolt 230j can be inserted.

[0077] 17, the rear connecting plate 240 is formed in a plate shape extending horizontally and in the front-rear direction. The lower end of the rear extending portion 221 is joined by welding to the front upper surface of the rear connecting plate 240. As described above, the rear portion of the rear connecting plate 240 is fixed to the tilt floor 92 together with the first mounting plate 211 and the left exterior portion 95. In this manner, the second mounting member 200 is attached to the tilt floor 92 at multiple locations (in this embodiment, the front connecting plate 230 is attached to the tilt floor 92 at two locations, and the rear connecting plate 240 is attached to the tilt floor 92 at one location, for a total of three locations).

[0078] <Wiring layout for left camera> As shown in Fig. 17, the wiring 83 of the left camera 43 extends along a path different from the wiring bundle 85 (see Fig. 14) of the right camera 41 and the rear camera 42, and is connected to a control unit 90 (see Fig. 14) provided on the frame 25. Specifically, the wiring 83 of the left camera 43 extends toward the inside of the left camera case 53 in the vehicle width direction through a through hole that opens the inner wall of the left camera case 53 in the vehicle width direction. Thereafter, the wiring 83 of the left camera 43 extends toward the control unit 90 (see Fig. 14) provided below the driver's seat.

[0079] <Action and effect> As described above, the detection unit mounting structure 40 of this embodiment includes a plurality of cameras 41-43 provided at at least two locations including the side and rear sides of the hydraulic excavator 1 and configured to detect the surroundings of the hydraulic excavator 1, and a first mounting member 100 supported by the frame 25 of the hydraulic excavator 1 and capable of mounting at least two of the plurality of cameras 41-43. The first mounting member 100 is mounted to the frame 25 at least two locations including the side and rear sides of the hydraulic excavator 1. However, when installing each camera in a specified position, if each camera is attached to the vehicle body via a different mounting member, the installation work of the mounting members is required depending on the number of cameras to be installed, so there is room for improvement in terms of improving workability. In contrast, in this embodiment, the first mounting member 100 is attached to the frame 25 at least two locations including the side and rear sides of the hydraulic excavator 1, so that at least two of the multiple cameras 41-43 can be attached to the frame 25 via the common first mounting member 100. Therefore, there is no need to attach at least two of the multiple cameras 41-43 to the frame 25 via separate mounting members. This improves workability.

[0080] In this embodiment, at least two of the multiple cameras 41 to 43 are a right camera 41 that images the area to the right of the hydraulic excavator 1, and a rear camera 42 that images the area behind the hydraulic excavator 1. The right camera 41 and the rear camera 42 are each disposed further inwardly than the first mounting member 100 within the vehicle body. Therefore, each of the right camera 41 and the rear camera 42 can be protected from external factors outside the vehicle body. For example, even if an obstacle is present outside the vehicle body, the obstacle hits the first mounting member 100 before coming into contact with each of the cameras 41, 42, so that the obstacle can be prevented from directly coming into contact with each of the cameras 41, 42. In addition, in this embodiment, the right camera 41 and the rear camera 42 are disposed inside the vehicle body from the outer periphery of the upper rotating body 3, so that the right camera 41 and the rear camera 42 can be more effectively protected from external factors outside the vehicle body. For example, even if an obstacle is present outside the vehicle body, the obstacle hits the outer periphery of the upper rotating body 3 before coming into contact with each of the cameras 41, 42, so that the obstacle can be more effectively prevented from coming into direct contact with each of the cameras 41, 42.

[0081] In this embodiment, the first mounting member 100 has a bent portion 122 that is curved in a plan view. The right camera 41 of the multiple cameras 41 to 43 is attached to the bent portion 122. Since the bent portion 122 has higher rigidity than the straight portion, the right camera 41 can be firmly attached to the first mounting member 100. Therefore, the right camera 41 can be prevented from being affected by vibrations from the vehicle body.

[0082] In this embodiment, the multiple cameras 41 to 43 include a left camera 43 that captures an image to the left of the hydraulic excavator 1. As shown in Fig. 14, the detection unit mounting structure 40 is supported by a tilt floor 92 that is movable between a seating position and a tilt position with respect to the frame 25, and includes a second mounting member 200 to which the left camera 43 can be attached. However, if a camera is attached near the tilt floor 92, there is a possibility that the camera may interfere with the operation of the tilt floor 92. In contrast to this, in this embodiment, the second mounting member 200 to which the left camera 43 can be attached is supported by the tilt floor 92, so that the left camera 43 moves integrally with the tilt floor 92 when the tilt floor 92 operates, and therefore the left camera 43 does not interfere with the operation of the tilt floor 92. Therefore, the operation of the tilt floor 92 can be performed smoothly. In addition, in this embodiment, the multiple cameras 41-43 are the left camera 43, the right camera 41, and the rear camera 42, so they can capture images of the surroundings including the left and right side and rear side of the hydraulic excavator 1. Furthermore, in this embodiment, the multiple cameras 41-43 are only three cameras, the left camera 43, the right camera 41, and the rear camera 42, so the camera installation work can be kept to a minimum, improving workability.

[0083] In this embodiment, the second mounting member 200 is attached to the tilt floor 92 at multiple points. Therefore, compared to a case where the second mounting member 200 is attached to the tilt floor 92 at only one point, the second mounting member 200 can be attached more firmly to the tilt floor 92. Therefore, it is possible to suppress the left camera 43 attached to the second mounting member 200 from being affected by vibrations from the vehicle body.

[0084] In this embodiment, the left camera 43 is disposed further inwardly than the second mounting member 200 within the vehicle body. Therefore, it is possible to protect the left camera 43 from external factors outside the vehicle body. For example, even if an obstacle is present outside the vehicle body, the obstacle hits the second mounting member 200 before coming into contact with the left camera 43, so that it is possible to prevent the obstacle from coming into direct contact with the left camera 43. In addition, in this embodiment, the left camera 43 is disposed inside the vehicle body relative to the outer periphery of the upper rotating body 3, so that the left camera 43 can be more effectively protected from external factors outside the vehicle body. For example, even if an obstacle is present outside the vehicle body, the obstacle hits the outer periphery of the upper rotating body 3 before coming into contact with the left camera 43, so that the obstacle can be more effectively prevented from coming into direct contact with the left camera 43.

[0085] In this embodiment, the multiple cameras 41 to 43 are arranged in a height range HR of 1 m or more and 2 m or less in the vertical direction. This makes it possible to suitably capture images of the surroundings of the hydraulic excavator 1. For example, if the hydraulic excavator 1 is a small hydraulic excavator 1, it may be used at a construction site on a road where pedestrians pass. Even in this case, by arranging the multiple cameras 41 to 43 in the height range HR of 1 m or more and 2 m or less in the vertical direction, it is possible to suitably capture images of pedestrians approaching the hydraulic excavator 1. Incidentally, small hydraulic excavators tend to have more accidents involving "crashes" and "being caught / entangled" than large hydraulic excavators. In order to prevent such accidents, a system is required that uses a detection unit such as a camera, a monitor, a buzzer, etc. to notify both the driver and pedestrians of their approach when someone other than the driver (such as a pedestrian) approaches the small hydraulic excavator. In this embodiment, the cameras 41 to 43 are positioned at a height ranging from 1.4 m to 1.6 m in the vertical direction, thereby enabling them to ideally capture images of pedestrians approaching the small hydraulic excavator, which is of great practical benefit in providing a system that notifies both the driver and pedestrians of each other's approach.

[0086] In this embodiment, the first attachment member 100 includes a bridging portion 113 that bridges between a right case attachment portion 111 to which the right camera case 51 is attached and a rear case attachment portion 112 to which the rear camera case 52 is attached. Therefore, the bridging portion 113 can reinforce the portion between the right case mounting portion 111 and the rear case mounting portion 112. This can increase the support rigidity of each of the right case mounting portion 111 and the rear case mounting portion 112. Therefore, it is possible to suppress the right camera 41 attached to the right camera case 51 and the rear camera 42 attached to the rear camera case 52 from being affected by vibrations from the vehicle body.

[0087] In this embodiment, as shown in FIG. 13, the detection unit mounting structure 40 includes a connecting member 150 that extends along the vertical direction and connects the first mounting member 100 and the frame 25 together. Therefore, the connecting member 150 can reinforce the portion between the first mounting member 100 and the frame 25. This can increase the support rigidity of the first mounting member 100. Therefore, the cameras 41, 42 attached to the first mounting member 100 can be prevented from being affected by vibrations from the vehicle body.

[0088] 14, in this embodiment, the detection unit mounting structure 40 includes a wiring bundle 85 that connects two of the multiple cameras 41-43 to a control unit 90 provided on the frame 25. The wiring bundle 85 is arranged to avoid a tilt floor 92 that is movable with respect to the frame 25 between a seating position and a tilt position. Therefore, when the tilt floor 92 is in operation, the wiring bundle 85 does not impede the operation of the tilt floor 92. Therefore, the tilt floor 92 can be operated smoothly.

[0089] In this embodiment, as shown in FIG. 1, the hydraulic excavator 1 includes a frame 25, a cab 21 provided above the frame 25, and the above-described detector mounting structure 40. Therefore, it is possible to provide a hydraulic excavator 1 capable of improving workability.

[0090] In this embodiment, the first mounting member 100 is detachably attached to the frame 25 by a fastening member such as a bolt. Therefore, the first mounting member 100 can be installed on the frame 25 later.

[0091] In this embodiment, the second mounting member 200 is detachably attached to the tilt floor 92 by fastening members such as bolts. Therefore, the second mounting member 200 can be installed on the tilt floor 92 after the fact.

[0092] In this embodiment, as shown in FIG. 3, the first mounting member 100 is disposed so as to avoid the cab 21 which is movable relative to the frame 25 between a seating position and a tilted position. Therefore, the first mounting member 100 does not hinder the tilting operation of the cab 12 during the tilting operation of the cab 21. Therefore, the tilting operation of the cab 21 can be performed smoothly. In addition, the first attachment member 100 is disposed so as to avoid the opening and closing path of the rear cover 24. Therefore, when the rear cover 24 is opened or closed, the first attachment member 100 does not impede the opening and closing operation of the rear cover 24. Therefore, the opening and closing operation of the rear cover 24 can be performed smoothly. In addition, when tilting up the cab 12 or opening the rear cover 24 to inspect or maintain various devices 27 (e.g., engine inspection), there is no need to remove the first mounting member 100, resulting in excellent workability for inspection and maintenance.

[0093] In this embodiment, as shown in FIG. 5, the first attachment member 100 is disposed so as to avoid the path of the right side cover 22 when it is opened and closed. Therefore, when the right side cover 22 is opened or closed, the first attachment member 100 does not hinder the opening and closing operation of the right side cover 22. Therefore, the opening and closing operation of the right side cover 22 can be smoothly performed. In addition, when opening the right side cover 22 to inspect or maintain (for example, clean) the various devices 28, there is no need to remove the first attachment member 100, which improves the workability of the inspection or maintenance.

[0094] In this embodiment, as shown in FIG. 6, the first mounting member 100 is disposed so as to avoid the path of the opening and closing of the soil cover 23. Therefore, when opening or closing the sediment cover 23, the first mounting member 100 does not hinder the opening and closing operation of the sediment cover 23. Therefore, the opening and closing operation of the sediment cover 23 can be smoothly performed. In addition, when opening the sediment cover 23 to refill the various tanks 29, there is no need to remove the first mounting member 100, which provides excellent operability.

[0095] <Other embodiments> In the above-described embodiment, the right camera and the rear camera are disposed inside the vehicle body from the first mounting member, but the present invention is not limited to this. For example, the right camera and the rear camera may be disposed outside the vehicle body from the first mounting member. For example, the right camera and the rear camera may be disposed outside the vehicle body from the outer periphery of the upper rotating body. For example, the right camera and the rear camera may be disposed inside the vehicle body from a protector (not shown). For example, the arrangement of the right camera and the rear camera can be changed according to the required specifications.

[0096] In the above-described embodiment, the right camera among the multiple cameras is attached to the bent portion, but this is not limited thereto. For example, the right camera may be attached to the straight portion. For example, each camera may be attached to the right rear pipe without a camera case. For example, the attachment mode of each camera to the first attachment member can be changed according to the required specifications.

[0097] In the above-described embodiment, an example has been described in which the second mounting member to which the left camera can be attached is supported by the tilt floor, but this is not limited thereto. For example, the second mounting member may be attached to a member different from the tilt floor. For example, a mounting member to which a camera different from the left camera can be attached may be supported by the tilt floor.

[0098] In the above embodiment, the second mounting member is attached to the tilt floor at multiple points, but this is not limited to the above. For example, the second mounting member may be attached to the tilt floor at only one point. For example, the mounting manner of the second mounting member can be changed according to the required specifications.

[0099] In the above-described embodiment, the left camera is disposed inside the vehicle body from the second mounting member, but the present invention is not limited thereto. For example, the left camera may be disposed outside the vehicle body from the second mounting member. For example, the left camera may be disposed outside the vehicle body from the outer periphery of the upper rotating body. For example, the left camera may be disposed inside the vehicle body from a protector (not shown). For example, the arrangement of the left camera can be changed according to the required specifications.

[0100] In the above-described embodiment, the multiple cameras are arranged in a vertical height range of 1 m or more and 2 m or less, but this is not limiting. For example, the multiple cameras may be arranged in a vertical height range of 0.1 m or more and less than 1 m, or may be arranged at a height exceeding 2 m. For example, the installation height of each camera can be changed according to the required specifications.

[0101] In the above-described embodiment, the first mounting member is described as having a bridging portion that bridges between the right case mounting portion to which the right camera case is attached and the rear case mounting portion to which the rear camera case is attached, but this is not limited thereto. For example, the first mounting member may not have a bridging portion. For example, as shown in FIG. 18, the right case mounting portion 311 to which the right camera case is attached and the rear case mounting portion 312 to which the rear camera case is attached may be disposed apart from each other. For example, the configuration of the first mounting member may be changed according to the required specifications.

[0102] In the above-described embodiment, the detection unit mounting structure has been described as including a connecting member that extends along the vertical direction and connects the first mounting member and the frame, but is not limited thereto. For example, the detection unit mounting structure may not include a connecting member. For example, the right rear pipe and the frame may be disposed apart from each other in the up-down direction. For example, the manner in which the first mounting member and the frame are connected may be changed according to the required specifications.

[0103] In the above-described embodiment, the detection unit mounting structure includes a wiring bundle connecting two of the multiple cameras and a control unit provided on the frame, and the wiring bundle is arranged to avoid the tilt floor that can move between the seating position and the tilt position relative to the frame, but this is not limited to the above. For example, the wiring bundle may have a length that can follow the movement of the tilt floor and may be arranged partially on the tilt floor. For example, the detection unit mounting structure may not include a wiring bundle. For example, each camera may have a built-in control unit that can communicate wirelessly. For example, the arrangement of the wiring connecting at least one of the multiple cameras and the control unit provided on the frame can be changed according to the required specifications.

[0104] In the above-described embodiment, an example in which a right camera, a rear camera, and a left camera are provided has been described as an example of the multiple detection units, but the present invention is not limited thereto. For example, the multiple detection units may include cameras other than the right camera, the rear camera, and the left camera. For example, the multiple detection units may include a radar. For example, the multiple detection units may include a camera and a radar, or may include only a radar. For example, the form of the multiple detection units can be changed according to the required specifications.

[0105] In the above embodiment, a small hydraulic excavator used at a construction site such as a road where pedestrians pass has been described as an example of a hydraulic excavator, but the present invention is not limited to this. For example, the hydraulic excavator may be a large hydraulic excavator such as a mining excavator used in a mine. For example, the form of the hydraulic excavator can be changed according to required specifications.

[0106] In the above embodiment, a hydraulic excavator has been described as an example of a work machine (work vehicle), but the present invention is not limited to this. For example, the present invention may be applied to other work vehicles such as a dump truck, a bulldozer, a wheel loader, etc.

[0107] In the above-described embodiment, the detector mounting structure is described as including a plurality of detectors for detecting the surroundings of the hydraulic excavator, but is not limited thereto. For example, the detector mounting structure may include a plurality of detectors for detecting the surroundings of a work vehicle other than the hydraulic excavator. The configuration of the detector mounting structure can be changed according to the required specifications. For example, the detector mounting structure may include a plurality of detectors that detect the surroundings of the work machine, and a mounting member that is supported on a tilt floor that can move between a seating position and a tilt position relative to the frame of the work machine, and to which at least one of the plurality of detectors can be attached. However, if the detection unit is installed near the tilt floor, there is a possibility that the detection unit may interfere with the operation of the tilt floor. In contrast, in this embodiment, since the mounting member to which at least one of the multiple detectors can be attached is supported by the tilt floor, the detector moves integrally with the tilt floor when the tilt floor is in operation, so the detector does not interfere with the operation of the tilt floor. Therefore, the tilt floor can be operated smoothly.

[0108] In the above-mentioned embodiment, a configuration in which a monitor, buzzer, etc. are provided in the cab of the work machine has been described, but this is not limiting. For example, a monitor, buzzer, etc. may be provided in a remote operation seat for remotely operating the work machine, or in a control room for managing and controlling a plurality of work machines as a whole. For example, a monitor, buzzer, etc. may be provided in a portable terminal, and the operator may view images displayed on the portable terminal. In such a case, a communication means may be provided between the work machine and the remote operation seat, the control room, and the portable terminal, respectively, to transmit and receive information such as images.

[0109] Although the embodiments of the present invention have been described above, the present invention is not limited to these, and additions, omissions, substitutions, and other modifications of the configuration are possible without departing from the spirit of the present invention, and the above-described embodiments can also be combined as appropriate. [Explanation of symbols]

[0110] 1...hydraulic excavator (working machine), 21...cab, 25...frame, 40...detection unit mounting structure, 41...right camera (detection unit), 42...rear camera (detection unit), 43...left camera (detection unit), 81...right camera wiring (wiring), 82...rear camera wiring, 82...wiring bundle (wiring), 90...control unit, 92...tilt floor, 100...first mounting member, 111...right case mounting portion (part to which one of at least two of a plurality of detection units is mounted), 112...rear case mounting portion (part to which the other of at least two of a plurality of detection units is mounted), 113...bridging portion, 122...first bent portion (bent portion), 150...connecting member, 200...second mounting member, HR...height range

Claims

1. A plurality of detectors are provided at least at two locations including a side surface and a rear surface of the work machine, and detect the surroundings of the work machine; a first mounting member supported by a frame of the work machine and capable of mounting at least two of the plurality of detectors; The first mounting member is attached to the frame at at least two locations including a side surface side and a rear surface side of the work machine, The plurality of detection units includes a left camera that captures an image to the left of the work machine, a second mounting member supported by a tilt floor that is movable between a seating position and a tilt position relative to the frame and to which the left camera can be attached; Detection unit mounting structure.

2. At least two of the plurality of detection units are a right camera that captures an image to the right of the work machine; a rear camera that captures an image behind the work machine; The right camera and the rear camera are each disposed inside the vehicle body with respect to the first mounting member. The detection unit mounting structure according to claim 1 .

3. The first mounting member has a bent portion that is curved in a plan view, At least one of the plurality of detection units is attached to the bent portion. The detection unit mounting structure according to claim 1 or 2.

4. The second mounting member is attached to the tilt floor at a plurality of points. The detection unit mounting structure according to any one of claims 1 to 3.

5. The left camera is disposed inside the vehicle body with respect to the second mounting member. The detection unit mounting structure according to any one of claims 1 to 4.

6. The plurality of detection units are arranged in a vertical range of 1 m to 2 m. The detection unit mounting structure according to any one of claims 1 to 5.

7. The first attachment member includes a bridge portion that bridges between a portion to which one of at least two of the plurality of detection units is attached and a portion to which the other of the detection units is attached. The detection unit mounting structure according to any one of claims 1 to 6.

8. The frame further includes a connecting member extending in a vertical direction and connecting the first mounting member and the frame. The detection unit mounting structure according to any one of claims 1 to 7.

9. Further, a wiring is provided connecting at least one of the plurality of detection units and a control unit provided in the frame, The wiring is arranged to avoid the tilt floor. The detection unit mounting structure according to any one of claims 1 to 8.

10. A frame, A cab provided above the frame; The detection unit mounting structure according to any one of claims 1 to 9, Working machinery.

Images