JP2022134746A - Detection portion attachment structure, and work machine - Google Patents

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 The present invention relates to a detection unit mounting structure and a working machine.

2. Description of the Related Art Work machines (work vehicles) such as hydraulic excavators are known to have a plurality of cameras provided behind or on the sides of the vehicle body so that the driver can visually recognize obstacles existing around the vehicle.
For example, Patent Document 1 below describes a camera C3 that is provided on the lower right side of the upper rotating body and captures an image of the right rear of the upper rotating body as a plurality of cameras, and a counterweight that is arranged behind the upper rotating body. A configuration is disclosed that includes a camera C4 provided at the center of the rear lower part for imaging the rear of the upper rotating body, and a camera C5 provided at the lower left side of the upper rotating body for imaging the left rear of the upper rotating body. ing.
For example, Patent Document 2 below describes a plurality of cameras, a left rear camera provided at the left rear of the upper revolving body for imaging the left side of the hydraulic excavator, and a left rear camera provided at the right rear of the upper revolving body for imaging the hydraulic excavator. A configuration is disclosed that includes a right rear camera that captures an image of the right rear, and a rear camera that is provided substantially at the center of the rear portion of the upper revolving body and captures an image of the rear of the hydraulic excavator.

WO2016/174977 WO2016/047806

In the case of Patent Document 1, the camera C3 is provided on the lower right side of the upper swing body, the camera C4 is provided on the rear lower center of the counterweight, and the camera C5 is provided on the lower left side of the upper swing body.
In the case of Patent Document 2, the left rear camera is provided at the left rear of the upper swing body, the right rear camera is provided at the right rear of the upper swing body, and the rear camera is provided substantially at the rear center of the upper swing body.
In these patent documents 1 and 2, when each camera is installed at a predetermined position, it is necessary to attach them to the vehicle body via different attachment members. Since mounting members are required according to the number of installed cameras, there is room for improvement in improving workability.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a detection unit mounting structure and a working machine that can improve workability.

A detection unit mounting structure according to an aspect of the present invention is provided at least at two locations including a side surface side and a rear surface side of a work machine, and includes a plurality of detection units for detecting the surroundings of the work machine, and a frame of the work machine. a first mounting member supported and capable of mounting at least two of the plurality of detection units, wherein the first mounting member is attached to at least two sides of the work machine including a side surface side and a rear side of the work machine with respect to the frame. installed in place.

According to the above aspect, workability can be improved.

1 is a side view of a hydraulic excavator according to an embodiment; FIG. 1 is a top view of a hydraulic excavator according to an embodiment; FIG. FIG. 4 is a perspective view of the tilting operation of the cab according to the embodiment as seen from the rear right. FIG. 4 is a perspective view of a state in which the cab according to the embodiment is tilted up, viewed from the upper left. FIG. 4 is a rear view showing the opening and closing operation of the right side cover according to the embodiment; The perspective view from the right rear of the opening-and-closing operation|movement of the earth-and-sand cover which concerns on embodiment. FIG. 2 is a top view showing the arrangement of cameras according to the embodiment; FIG. 2 is a rear view showing the arrangement of cameras according to the embodiment; The perspective view which looked at the periphery of the 1st attachment member which concerns on embodiment from the right rear. The perspective view which looked at the 1st attachment member which concerns on embodiment from the left front. FIG. 4 is a perspective view of the periphery including the right camera according to the embodiment, viewed from the rear right. FIG. 4 is a perspective view of the periphery including the rear camera according to the embodiment, viewed from the rear right. The perspective view which looked at the periphery including the connection member which concerns on embodiment from the right front. 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; FIG. 3 is a perspective view of the periphery including the left camera according to the embodiment, viewed from the front left. The perspective view which looked at the 2nd attachment member which concerns on embodiment from the right front. FIG. 4 is a perspective view for explaining the wiring arrangement of the left camera according to the embodiment; The perspective view which looked at the periphery of the 1st attachment member which concerns on the modification of embodiment from the right rear.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiments, a hydraulic excavator will be described as an example of a work machine (work vehicle). For example, the hydraulic excavator of the embodiment is a small hydraulic excavator used at construction sites such as pedestrian roads.

<Work machine>
As shown in FIG. 1, a hydraulic excavator 1 as a work machine includes a self-propelled lower traveling body 2, an upper revolving body 3 rotatably provided on the lower traveling body 2, and the upper revolving body 3. and a working machine 4 that can bend and rise and fall freely. Hereinafter, the forward direction, the backward direction, and the vehicle width direction of the hydraulic excavator 1 are referred to as "vehicle front (one side in the vehicle front-rear direction),""vehicle rear (the other side in the vehicle front-rear direction)," and "vehicle width direction." The vehicle width direction may also be referred to as "left side (one side in the vehicle width direction)" or "right side (other side in the vehicle width direction)". The right hand with respect to the direction in which the hydraulic excavator 1 moves forward is called the right side, and the left hand with respect to the direction in which the hydraulic excavator 1 moves forward is called the left side. The vertical direction, upward direction, and downward direction when the hydraulic excavator 1 is placed on a horizontal plane are simply referred to as "vertical direction,""upward," and "downward."

As shown in FIG. 2 , the work implement 4 is arranged to be offset to the right with respect to the center of the upper revolving body 3 in the vehicle width direction. As shown in FIG. 1 , work machine 4 includes boom 10 , arm 11 , bucket 12 , boom cylinder 13 , arm cylinder 14 and bucket cylinder 15 . A base end of the boom 10 is rotatably connected to the upper rotating body 3 . A distal end portion of the boom 10 is rotatably connected to a proximal end portion of the arm 11 . A tip portion 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 fluid discharged from a hydraulic pump (not shown).

The upper revolving body 3 includes a cab base 20 rotatably connected to the lower traveling body 2 , a cab 21 provided on the cab base 20 , and a right side cover attached to the right rear portion of the upper revolving body 3 . 22 (see FIG. 3), a sand cover 23 (see FIG. 3) attached to the right front part of the upper revolving body 3, a rear cover 24 attached to the rear part of the upper revolving body 3, and the skeleton of the upper revolving body 3. and a detection unit mounting structure 40 for detecting the periphery of the hydraulic excavator 1 . As viewed from above in FIG. 2, the left and right side portions and the rear portion of the upper revolving body 3 have a shape that curves outward from the vehicle body.

As shown in FIG. 2 , the cab 21 is arranged on the left side of the upper swing 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 is rotatable in an arrow TU direction (tilt up direction) and an arrow TD direction (tilt down direction). Hereinafter, the initial position before the cab 21 rotates in the direction of the arrow TU will be referred to as the "seating position". Hereinafter, a position where the cab 21 is rotated by a predetermined rotation angle in the direction of the arrow TU from the seated position will be referred to as a "tilt position". The operator rotates the cab 21 in the direction of the arrow TU by using operating power such as a hydraulic cylinder or a crane. Thereby, the upper side of each device 27 is exposed.

The rear cover 24 is rotatable in an arrow B1 direction (opening direction) and an arrow B2 direction (closing direction). For example, when performing inspection (for example, engine inspection) or maintenance of various devices 27, the operator opens the rear cover 24 in the direction of arrow B1.

As shown in FIG. 5, the right side cover 22 is rotatable in an arrow D1 direction (opening direction) and an arrow D2 direction (closing direction). Various devices 28 such as a battery, a radiator, and an oil cooler are provided in a space on the right side of the rear portion of the cab 21 . For example, when performing inspection or maintenance (for example, cleaning) of various devices 28, the operator opens the right side cover 22 in the direction of arrow D1.

As shown in FIG. 6, the dirt cover 23 is rotatable in the arrow F1 direction (opening direction) and the arrow F2 direction (closing direction). Various tanks 29 such as a fuel tank and a hydraulic oil tank are provided in a space on the right side of the front portion of the cab 21 . For example, when replenishing the various tanks 29, the operator opens the dirt cover 23 in the direction of the arrow F1.

As shown in FIG. 1, the cab 21 has a top plate 30 extending horizontally. A monitor 31 is provided on the lower front side of the top plate 30 . For example, the monitor 31 is an input/output device such as a touch panel. The monitor 31 can combine and display images acquired 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).

Note that the monitor 31 may be capable of displaying surrounding conditions of the hydraulic excavator 1 acquired by a plurality of cameras as a bird's-eye view image and a single camera image. In addition, the monitor 31 may be capable of displaying various information including the state of the engine, hydraulic pump, and the like. For example, the monitor 31 can display mechanical gauges such as engine water temperature, oil temperature, remaining amount of fuel, etc., display of failure information indicating device abnormalities, etc., display of user menus for the operator to make various settings, and the like. good too.

A lamp 32 is provided at the rear of the cab 21 . The lamp 32 emits light when an obstacle (for example, a person) is detected by multiple cameras. For example, the lamp 32 may change its light emission level (warning level) according to the distance between the hydraulic excavator 1 and the obstacle.

A buzzer 33 is built in the rear part of the cab 21 . A buzzer 33 sounds when an obstacle (for example, a person) is detected by a plurality of cameras. For example, the buzzer 33 may change the sound level (warning level) according to the distance between the excavator 1 and the obstacle.

<Detection unit mounting structure>
As shown in FIG. 7, the detection unit mounting structure 40 includes a plurality of (for example, three in this embodiment) cameras 41 to 43 (detection units) for detecting the surroundings of the hydraulic excavator 1, and three cameras 41 to 43. A first mounting member 100 to which two of them can be mounted and a second mounting member 200 to which the remaining one can be mounted are provided.

<Detector>
The three cameras 41 to 43 are a right camera 41 for imaging the right side of the hydraulic excavator 1 , a rear camera 42 for imaging the rear side of the hydraulic excavator 1 , and a left camera 43 for imaging the left side of the hydraulic excavator 1 . be. 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 camera 41-43 is a CCD (Charge-Coupled Device). Each camera 41-43 may have a wide dynamic range function.

7, each of the right camera 41, the rear camera 42, and the left camera 43 is arranged inside the vehicle body from the outer peripheral edge of the upper rotating body 3. As shown in FIG. As viewed from above in FIG. 7 , the right camera 41 and the rear camera 42 are arranged inside the vehicle body with respect to the first mounting member 100 . As viewed from above in FIG. 7 , the left camera 43 is arranged inside the vehicle body with respect to the second mounting member 200 .

When viewed from above in FIG. 7, the horizontal field of view AH (horizontal angle of view AH) of each of the cameras 41 to 43 is, for example, 100° or more and 180° or less. Since the horizontal angles of view AH of the adjacent cameras (the right camera 41 and the rear camera 42, and the rear camera 42 and the left camera 43) overlap each other, the left and right sides and the rear side of the hydraulic excavator 1 can be preferably imaged. can be done.

As viewed from the rear in FIG. 8, the visual field range AP (vertical angle of view AP) of each of the cameras 41 to 43 in the height direction is, for example, 60° or more and 140° or less. In FIG. 8, only the vertical angle of view AP of the right camera 41 is illustrated. Each camera 41 to 43 is arranged 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 to 43 are arranged in a height range of 1.4 m or more and 1.6 m or less in the vertical direction. Therefore, an obstacle (for example, a person) approaching the hydraulic excavator 1 can be preferably imaged by the cameras 41 to 43 .

<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 attachment member 100 is detachably attached to the frame 25 by fastening members such as bolts. 7, the first mounting member 100 overlaps the right rear portion of the upper rotating body 3 in top view. The first mounting member 100 is arranged to avoid the working machine 4 . The first mounting member 100 can mount the right camera 41 and the rear camera 42 . The first attachment member 100 is attached to the frame 25 at least at two locations including the right side and the 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 .

As shown in FIG. 10 , the first mounting member 100 includes a right rear plate 110 , a right rear pipe 120 , a front connection bracket 130 and a rear connection bracket 140 . For example, the components of the first mounting member 100 are made of metal.

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 bent shape in plan view along the right outer peripheral edge of the upper revolving 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 revolving body 3 (see FIG. 7).

As shown in FIG. 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 fastening members such as bolts (not shown).
As shown in FIG. 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 fastening members such as bolts (not shown).

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

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 thereon. The upper wall of the right camera case 51 has a female threaded portion (not shown) into which the bolt 111j can be screwed. A plurality of insertion holes 111h (for example, two holes in the vehicle width direction in the present embodiment) 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 screw portion of the upper wall of the right camera case 51. do. As a result, the right camera case 51 can be attached to the right case attachment portion 111 .

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 thereon. The upper wall of the rear camera case 52 has a female threaded portion (not shown) into which the bolt 112j can be screwed. A plurality of insertion holes 112h (for example, two holes in the vehicle front-rear direction in the present embodiment) are provided in the rear case attachment 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 screw portion of the upper wall of the rear camera case 52. do. Thereby, the rear camera case 52 can be attached to the rear case attachment portion 112 .

The bridging portion 113 bridges 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 from the rear end of the right case mounting portion 111 toward the rear of the vehicle in a top view, and is inclined inward in the vehicle width direction. It is connected.

The right rear pipe 120 is a hollow member formed by bending a metal pipe at a plurality of locations (for example, at three locations in this embodiment). The cross-sectional shape of right rear pipe 120 (the cross-sectional shape taken along a plane perpendicular to the direction in which right rear pipe 120 extends) has an annular shape. As shown in FIG. 11, the inner diameter of the right rear pipe 120 has a size that allows the wiring 81 of the right camera 41 to pass therethrough. The right rear pipe 120 is welded to the lower surface of the right rear plate 110 .

As shown in FIG. 9 , the right rear pipe 120 includes a first extending portion 121 extending in the vehicle width direction and a second extending portion 121 that curves in an arc shape from the right end of the first extending portion 121 toward the rear of the vehicle in a plan view. one bending portion 122 (bending portion), a second extension portion 123 extending from the rear end portion of the first bending portion 122 toward the rear of the vehicle, and a rear end portion of the second extension portion 123 extending toward the rear of the vehicle and widthwise of the vehicle. A second bent portion 124 that curves inward in an arc shape in a plan view, and a straight line that inclines from the rear end portion of the second bent portion 124 toward the rear of the vehicle so as to be located inward in the vehicle width direction. A third extension portion 125, a third bending portion 126 that curves inward in the vehicle width direction from a rear end portion of the third extension portion 125 in an arc shape in a plan view, and the vehicle width direction of the third bending portion 126. and a fourth extending portion 127 extending inward in the vehicle width direction from the inner end portion.

In the right rear pipe 120, the portion outside the vehicle body (specifically, the right end portion of the first extension portion 121, the first bend portion 122, the second extension portion 123, the second bend portion 124, the third extension portion 125 , the third bent portion 126 and the fourth extended portion 127 ) are arranged along the outer edge of the right rear plate 110 . For example, the right rear pipe 120 is welded to the lower surface of the right rear plate 110 along the outer edge of the right rear plate 110 .

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 plan view. A 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 mounting portion 111 . In other words, the right camera 41 is attached to the first bent portion 122 .

As shown in FIG. 10, the front connection bracket 130 is a member in which a plurality of (for example, two in this embodiment) metal plates are joined together. The front connection bracket 130 includes a first front connection plate 131 that is L-shaped when viewed from the vehicle front-rear direction, and a second front connection plate 132 that rises from the upper surface of the first front connection plate 131 .

A lower portion of the first front connecting plate 131 has an outer shape that slopes upward toward the rear of the vehicle when viewed in the vehicle width direction. A lower portion 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 are provided in the first front connection plate 131 (for example, in this embodiment, two holes are provided at intervals along the slope of the lower portion of the first front connection plate 131). In addition, the frame 25 has a female screw portion (not shown) into which a bolt can be screwed. An exterior cover 60 (see FIG. 13) covering the frame 25 has an insertion hole (not shown) through which a bolt can be inserted.

For example, in a state in which the first front connecting plate 131 is arranged along the exterior cover 60 (see FIG. 13) covering the frame 25, bolts are inserted from the inside of the first front connecting plate 131 in the vehicle width direction into each insertion hole ( 131 h of the lower portion of the first front connecting plate 131 and the insertion hole of the exterior cover 60 ), and screwed into the female screw portion of the frame 25 . Thereby, the first front connecting plate 131 can be attached to the frame 25 . In this embodiment, since the female threaded portion of the frame 25 is the existing one for attaching the exterior cover 60, the first front connecting plate 131 and the exterior cover are attached to the frame 25 without providing a new female threaded portion to the frame 25. 60 can be tightened together.

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

The rear connection bracket 140 is a member in which a plurality of (for example, four in this embodiment) metal plates are joined together. The rear connection bracket 140 includes a first rear connection plate 141 that is L-shaped when viewed from the vehicle width direction, a second rear connection plate 142 that stands forward from the front surface of the first rear connection plate 141, and an L shape in plan view. It has a letter-shaped third rear connecting plate 143 and a rectangular rear flange 144 (see FIG. 12) in a plan view.

The first rear connecting plate 141 has an opening 141a that exposes the lens portion of the rear camera 42 (see FIG. 12). The lower part of the first rear connecting plate 141 has a shape (U-shape) bifurcating forward in a plan view. A 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. As shown in FIG. A plurality of insertion holes 141h (for example, two in the present embodiment, one at each end of the bifurcated branch 141b) are provided in the lower portion of the first rear connecting plate 141. As shown in FIG. The frame 25 (see FIG. 12) has a female screw portion (not shown) into which the bolt 141j can be screwed. An exterior cover 60 covering the frame 25 has an insertion hole (not shown) through which the bolt 141j can be inserted. As shown in FIG. 12, the exterior cover 60 has a recess 61 into which the branched portion 141b of the first rear connecting plate 141 is inserted.

For example, in a state in which the branched portion 141b of the first rear connecting plate 141 is placed in the recess 61 of the exterior cover 60 covering the frame 25, the bolt 141j is inserted into each insertion hole (branched portion insertion hole 141h) from above the branched portion 141b. , and the insertion hole of the exterior cover 60 ), and screwed into the female screw portion of the frame 25 . Thereby, the first rear connecting plate 141 can be attached to the frame 25 . In this embodiment, since the female threaded portion of the frame 25 is the existing one for attaching the exterior cover 60, the first rear connecting plate 141 and the exterior cover are attached to the frame 25 without providing a new female threaded portion to the frame 25. 60 can be tightened together.

As shown in FIG. 10, the second rear connecting plate 142 has a larger outer shape than the fourth extending portion 127 of the right rear pipe 120 when viewed in the vehicle width direction. The rear end portion of the second rear connecting plate 142 is welded to the front surface of the first rear connecting plate 141 . A vehicle width direction inner end portion of the fourth extending portion 127 is welded to the right side surface of the second rear connecting plate 142 . A portion of the fourth extension portion 127 that overlaps the front surface of the first rear connection plate 141 as viewed in the vehicle front-rear direction is welded to the front surface of the first rear connection plate 141 .

The rear end of the third rear connecting plate 143 is welded 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. As shown in FIG. The right wall of the rear camera case 52 (see FIG. 12) has a female threaded portion (not shown) into which a bolt 143j can be screwed.

For example, with the rear camera case 52 placed on the lower surface of the rear case mounting portion 112 , the bolt 143 j is passed through the insertion hole 143 h from the right side of the third rear connecting plate 143 and screwed into the female screw portion of the rear camera case 52 . . Thereby, the rear camera case 52 can be attached to the third rear connecting plate 143 .

As shown in FIG. 12, the front end portion of the rear collar portion 144 is welded to the rear surface of the first rear connecting plate 141 . The rear flange 144 is arranged above the opening 141 a of the first rear connection plate 141 . The rear flange 144 functions as a canopy for the lens portion of the rear camera 42 exposed through the opening 141a.

As shown in FIG. 13 , the detection unit 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 like a crank 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 a lower connecting portion 151 and a lower connecting portion. and an L-shaped extension portion 153 bridging with the portion 152 .

The L-shaped extension portion 153 is formed in an L-shape extending vertically when viewed in the vehicle width direction. The upper end portion of the L-shaped extension portion 153 is connected to the front end portion of the upper connecting portion 151 . A lower front end portion of the L-shaped extension portion 153 is connected to an upper end portion of the lower connecting portion 152 .

The upper connecting portion 151 is formed in a plate shape extending horizontally. The upper connecting portion 151 overlaps a portion of the right rear pipe 120 of the first mounting member 100 (a portion of the first extending portion 121 near the first bent portion 122) in 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 extension portion 121 . As shown in FIG. 10 , a nut 154 is welded to the upper end portion of the portion of the first extension portion 121 near the first bent portion 122 .

For example, with the upper connecting portion 151 placed on the top surface of the nut 154 , the bolt 151 j is passed through the insertion hole from above the upper connecting portion 151 and screwed into the nut 154 . As a result, the upper connecting portion 151 of the connecting member 150 can be attached to the right rear pipe 120 of the first mounting member 100 .

As shown in FIG. 13, the lower connecting portion 152 is formed in a plate shape extending along a vertical plane (specifically, a plane including the vertical direction and the vehicle width direction). The lower connecting portion 152 has an insertion hole (not shown) for a bolt 152j for attaching the lower connecting portion 152 to the frame 25 . The frame 25 has a female screw portion (not shown) into which the bolt 152j can be screwed. An inner cover 70 covering the frame 25 has an insertion hole (not shown) through which the bolt 152j can be inserted.

For example, in a state in which the lower connecting portion 152 is arranged on the front surface of the inner cover 70 covering the frame 25, the bolt 152j is inserted from the front of the lower connecting portion 152 into each insertion hole (the insertion hole of the lower connecting portion 152 and the inner cover 70). ) and screwed into the female threaded portion of the frame 25 . Thereby, the lower connecting part 152 can be attached to the frame 25 . In this embodiment, since the female threaded portion of the frame 25 is the existing one for attaching the inner cover 70, the lower connecting portion 152 and the inner cover 70 can be attached to the frame 25 without providing a new female threaded portion to the frame 25. Can be fixed together by tightening.

<Arrangement of wiring for right camera and rear camera>
As shown in FIG. 11 , the wiring 81 of the right camera 41 passes through the inner space of the right rear pipe 120 . After that, 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 section 90 provided on the frame 25 . The wires 81 and 82 are arranged to avoid a tilt floor 92 (see FIG. 4) that is movable between the seating position and the tilt position with respect to the frame 25 .

Specifically, as shown in FIG. 11 , the wiring 81 of the right camera 41 passes through the through-hole that opens the rear wall of the right camera case 51 toward below the second extending portion 123 of the right rear pipe 120 . extended. After that, the wiring 81 of the right camera 41 is led to the internal space of the right rear pipe 120 through the through hole 123h that opens the lower portion of the second extending portion 123 . After that, the wiring 81 of the right camera 41 extends along the inner space of the right rear pipe 120 (specifically, the portion of the inner space of the right rear pipe 120 along the second extending portion 123 and thereafter). there is After that, the wiring 81 of the right camera 41 is led to the outside of the right rear pipe 120 through a through hole 127h (see FIG. 10) that opens in the lower portion of the fourth extending portion 127. As shown in FIG.

As shown in FIG. 12, the wiring 82 of the rear camera 42 extends forward 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 forward 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 and the wiring 82 of the rear camera 42 pass between the tilt floor 92 and the right exterior portion 94 in the width direction of the vehicle and extend forward and downward. extended. After that, 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 . After that, the wiring bundle 85 extends toward the internal space on the left side of the cab base 20 through the circumference of the rotation shaft 93 . After that, the wiring bundle 85 extends while curving toward a control unit 90 provided below the driver's seat. In this manner, the wiring bundle 85 is arranged at a position that does not overlap with the rotation trajectory of the tilt floor 92 .

<Second mounting member>
As shown in FIG. 4, the second mounting member 200 is supported by a tilt floor 92 that is movable with respect to the frame 25 between a seated position and a tilt position. For example, the second mounting member 200 is detachably mounted on the tilt floor 92 with a fastening member such as a bolt. The second mounting member 200 overlaps the left side portion of the upper rotating body 3 in a top view of FIG. 7 . The second mounting member 200 is arranged to avoid the working machine 4 . The second mounting member 200 can mount the left camera 43 . The second attachment members 200 are attached to the tilt floor 92 at a plurality of locations on the left side surface of the hydraulic excavator 1 .

The second mounting member 200 includes a left bracket 210 , a left pipe 220 , a front connection plate 230 and a rear connection plate 240 . For example, the components of the second mounting member 200 are made of metal.

As shown in FIG. 15, the left bracket 210 is a member to which the left camera 43 is attached. The left bracket 210 is a member in which a plurality of (for example, three in this embodiment) metal plates are joined together. The left bracket 210 includes a first mounting plate 211 that is U-shaped and opens toward the inside of the vehicle when viewed in the longitudinal direction of the vehicle, a second mounting plate 212 that is L-shaped in plan view, and a rectangular shape in plan view. and a shaped left collar 213 .

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 with fastening members such as bolts.

The first mounting plate 211 includes an upper mounting portion 211a to which the upper wall of the left camera case 53 is mounted, a left mounting portion 211b to which the left wall of the left camera case 53 is mounted, and a lower mounting portion 211c to which the tilt floor 92 is mounted. , provided.

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

For example, with the left camera case 53 placed on the lower surface of the upper mounting portion 211 a , the bolt 211 j is passed through the insertion hole 211 h from above the upper mounting portion 211 a and screwed into the female screw portion of the upper wall of the left camera case 53 . As a result, the upper wall of the left camera case 53 can be attached to the upper attachment portion 211a.

As shown in FIG. 15, the left attachment portion 211b is formed in a plate shape extending along a vertical plane (specifically, a plane including the vertical direction and the vehicle front-rear direction). The upper end portion of the left mounting portion 211b is connected to the vehicle width direction outer end portion of the upper mounting portion 211a. The left mounting portion 211b has an opening 211d through which the lens portion of the left camera 43 is exposed.

As shown in FIG. 16, a nut 214 is welded to the vehicle width direction inner surface of the left mounting portion 211b. The nut 214 is arranged below the opening 211d. As shown in FIG. 17, the left camera case 53 has a protruding portion 53a that protrudes downward so as to overlap the nut 214 when viewed in the vehicle width direction. The projecting portion 53a has an insertion hole (not shown) for a bolt 53j for attaching the left camera case 53. As shown in FIG.

For example, with the left camera case 53 placed on the lower surface of the upper mounting portion 211a, the bolt 53j is passed through the insertion hole from the vehicle width direction inner side of the protruding portion 53a, and the nut 214 is screwed. As a result, the projecting portion 53a of the left camera case 53 can be attached to the left attachment portion 211b.

As shown in FIG. 16, the lower attachment portion 211c is formed in a plate shape extending along the width direction of the vehicle. 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 vehicle width direction inner end of the lower mounting portion 211 c has an insertion hole 215 h for a bolt 215 j (see FIG. 17 ) for mounting the lower mounting portion 211 c to the tilt floor 92 .

The tilt floor 92 has a female screw portion (not shown) into which the bolt 215j can be screwed. An exterior cover 95 (hereinafter also referred to as “left exterior portion 95”) covering the tilt floor 92 has an insertion hole (not shown) through which the bolt 215j can be inserted. The rear part of the rear connection plate 240 arranged between the left exterior part 95 and the lower mounting part 211c has an insertion hole (not shown) through which the bolt 215j can be inserted.

For example, in a state in which the lower attachment portion 211c is arranged on the rear upper surface of the rear connection plate 240, the bolt 215j is inserted from above the lower attachment portion 211c into each of the insertion holes (the insertion hole 215h of the lower attachment portion 211c and the insertion hole of the rear connection plate 240). , and the insertion hole of the left exterior part 95 ), and screwed into the female screw part of the tilt floor 92 . Thereby, the first mounting plate 211 can be attached to the tilt floor 92 . In this embodiment, since the internal thread of the tilt floor 92 is the existing one for attaching the left exterior part 95, the first mounting plate 211 is attached to the tilt floor 92 without providing a new internal thread on the tilt floor 92. , the rear connecting plate 240 and the left exterior part 95 can be fastened together.

As shown in FIG. 16, the second mounting plate 212 is shaped like a plate extending in the vertical direction. The second mounting plate 212 is arranged between the upper mounting portion 211 a and the lower mounting portion 211 c of the first mounting plate 211 . The upper end portion of the second mounting plate 212 is welded to the lower surface of the upper mounting portion 211a. A rear lower end portion of the second mounting plate 212 is welded to the upper surface of the lower mounting portion 211c.

A portion of the second mounting plate 212 near the center in the vertical direction has an insertion hole 216 h for a U-shaped bolt 217 (see FIG. 15 ) for mounting the second mounting plate 212 to the left pipe 220 . A plurality of insertion holes 216h (for example, two holes in the vehicle front-rear direction in the present embodiment) are provided in the second mounting plate 212 . The second mounting plate 212 has a convex portion 212a curved forward at a position corresponding to the front side of the two insertion holes 216h.

For example, while the second mounting plate 212 is arranged on the left side of the rear extension portion 221 of the left pipe 220, the U-shaped bolt 217 is arranged from the inside of the rear extension portion 221 in the vehicle width direction. After that, each male threaded portion 217j of the U-shaped bolt 217 is passed through each insertion hole 216h of the second mounting plate 212, and each male threaded portion 217j protrudes leftward from the second mounting plate 212. As shown in FIG. After that, nuts 216 j are screwed from the left side of the second mounting plate 212 to the respective male threaded portions 217 j that protrude to the left side of the second mounting plate 212 . Thereby, the second mounting plate 212 can be attached to the rear extension portion 221 of the left pipe 220 via the U-shaped bolt 217 .

As shown in FIG. 15, the vehicle width direction inner end portion of the left flange portion 213 is welded to the left side surface of the first mounting plate 211 (vehicle width direction outer surface of the left mounting portion 211b). The left flange portion 213 is arranged above the opening portion 211d of the left attachment portion 211b. The left flange 213 functions as a canopy for the lens portion of the left camera 43 exposed through the opening 211d.

The left pipe 220 is a hollow member formed by bending a metal pipe at a plurality of locations (for example, at 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 portion of the rear connecting plate 240 and an upper end portion of the rear extension portion 221 extending upward from the vehicle width direction. a rear bent portion 222 that curves into an arc, an upper extension portion 223 that extends from the front end of the rear bend portion 222 toward the front of the vehicle, and a front end of the upper extension portion 223 that extends downward from the front end of the vehicle when viewed from the vehicle width direction; a front bending portion 224 curved in an arc, a front extending portion 225 extending downward from the lower end of the front bending portion 224, and a front extending portion 225 extending rearward from the lower end of the front extending portion 225 as viewed in the vehicle width direction. and a lower bending portion 226 curved in an arc.

The front connection plate 230 is formed in a plate shape extending in the vertical direction. The rear end portion of the lower bent portion 226 is welded to the front surface of the upper and lower central portions of the front connecting plate 230 . Upper and lower ends of the front connecting plate 230 have through holes (not shown) for bolts 230j for attaching the front connecting plate 230 to the tilt floor 92 . Note that the tilt floor 92 has a female threaded portion (not shown) into which the bolt 230j can be screwed. A left exterior portion 95 covering the tilt floor 92 has an insertion hole (not shown) through which the bolt 230j can be inserted.

As shown in FIG. 17, the rear connection plate 240 is formed in a plate shape extending horizontally and in the front-rear direction. A lower end portion of the rear extension portion 221 is welded to the front upper surface of the rear connection 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 way, the second mounting member 200 is attached to the tilt floor 92 at a plurality of locations (in this embodiment, the front connection plate 230 has two locations with respect to the tilt floor 92, and the rear connection plate 240 has two locations with respect to the tilt floor 92). (3 places in total).

<Arrangement of wiring for the left camera>
As shown in FIG. 17, the wiring 83 of the left camera 43 extends along a different path from the wiring bundle 85 (see FIG. 14) of the right camera 41 and the rear camera 42, so that the controller 90 (see FIG. 14) provided on the frame 25 (see FIG. 14). Specifically, the wiring 83 of the left camera 43 extends inward in the vehicle width direction of the left camera case 53 through a through hole that opens in the inner wall of the left camera case 53 in the vehicle width direction. After that, the wiring 83 of the left camera 43 extends toward the control unit 90 (see FIG. 14) provided below the driver's seat.

<Effect>
As described above, the detection unit mounting structure 40 of the present embodiment is provided at least at two locations including the side surface side and the rear surface side of the hydraulic excavator 1, and includes a plurality of cameras 41 to 43 for detecting the surroundings of the hydraulic excavator 1. , and a first mounting member 100 which is supported by the frame 25 of the hydraulic excavator 1 and to which at least two of the plurality of cameras 41 to 43 can be mounted. The first attachment member 100 is attached to the frame 25 at at least two locations including the side surface side and the rear surface side of the hydraulic excavator 1 .
By the way, when each camera is installed at a predetermined position, if it is configured to be attached to the vehicle body via different attachment members, it is necessary to attach the attachment members according to the number of cameras to be installed. There is room for improvement.
In contrast, in the present embodiment, the first mounting member 100 is mounted on the frame 25 at least at two locations including the side surface side and the rear surface side of the hydraulic excavator 1, so that at least the plurality of cameras 41 to 43 are The two can be attached to frame 25 via a common first attachment member 100 . Therefore, it is not necessary to attach at least two of the plurality of cameras 41 to 43 to the frame 25 via separate attachment members. Therefore, workability can be improved.

In this embodiment, at least two of the plurality of cameras 41 to 43 are the right camera 41 that captures the right side of the hydraulic excavator 1 and the rear camera 42 that captures the rear side of the hydraulic excavator 1 . Each of the right camera 41 and the rear camera 42 is arranged inside the vehicle body with respect to the first mounting member 100 .
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 exists outside the vehicle body, the obstacle hits the first mounting member 100 before contacting the cameras 41 and 42, so the obstacle directly contacts the cameras 41 and 42. can be suppressed.
In addition, in the present embodiment, the right camera 41 and the rear camera 42 are arranged inside the vehicle body relative to the outer peripheral edge of the upper rotating body 3, so that the right camera 41 and the rear camera 42 are positioned outside the vehicle body. It can protect more effectively from external factors. For example, even if an obstacle exists outside the vehicle body, the obstacle hits the outer peripheral edge of the upper rotating body 3 before contacting the cameras 41 and 42, so that the obstacle can hit the cameras 41 and 42 directly. contact can be more effectively suppressed.

In this embodiment, the first mounting member 100 has a bent portion 122 that curves in plan view. The right camera 41 among the plurality of 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 attachment member 100 . Therefore, it is possible to prevent the right camera 41 from being affected by vibrations from the vehicle body.

In this embodiment, the multiple cameras 41 to 43 include a left camera 43 that captures the left side of the hydraulic excavator 1 . As shown in FIG. 14, the detection unit mounting structure 40 is supported by a tilt floor 92 movable between a seating position and a tilt position with respect to the frame 25, and a second mounting member 200 to which the left camera 43 can be mounted. Prepare.
By the way, when the camera is attached near the tilt floor 92 , the camera may interfere with the operation of the tilt floor 92 .
In contrast, in the present 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 together with the tilt floor 92 when the tilt floor 92 operates. Therefore, the left camera 43 does not interfere with the operation of the tilt floor 92 . Therefore, the tilt floor 92 can be smoothly operated.
In addition, in the present embodiment, the cameras 41 to 43 are the left camera 43, the right camera 41, and the rear camera 42, so that the surroundings including the left, right, and rear sides of the hydraulic excavator 1 can be imaged. . Furthermore, in this embodiment, the plurality of cameras 41 to 43 are only three cameras, namely, the left camera 43, the right camera 41, and the rear camera 42. Therefore, the work for mounting the cameras can be minimized. can improve sexuality.

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

In this embodiment, the left camera 43 is arranged inside the vehicle body with respect to the second mounting member 200 .
Therefore, the left camera 43 can be protected from external factors outside the vehicle body. For example, even if an obstacle exists outside the vehicle body, the obstacle hits the second mounting member 200 before contacting the left camera 43, so the obstacle is prevented from directly contacting the left camera 43. can do.
In addition, in this embodiment, the left camera 43 is arranged inside the vehicle body from the outer peripheral edge of the upper rotating body 3, so that the left camera 43 is more effectively protected from external factors outside the vehicle body. be able to. For example, even if an obstacle exists outside the vehicle body, the obstacle hits the outer peripheral edge of the upper rotating body 3 before contacting the left camera 43, so the obstacle does not directly contact the left camera 43. can be suppressed more effectively.

In this embodiment, the plurality of 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.
Therefore, the surroundings of the hydraulic excavator 1 can be preferably imaged. For example, when the hydraulic excavator 1 is a small hydraulic excavator 1, it may be used at construction sites such as roads where pedestrians pass. Even in this case, the plurality of 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, so that pedestrians approaching the hydraulic excavator 1 can be preferably imaged. .
By the way, in the case of small-sized hydraulic excavators, there is a tendency that more accidents related to "collision" and "caught in/between" occur compared to large-sized hydraulic excavators. As a measure to prevent the occurrence of such disasters, when a person other than the driver (for example, a pedestrian) approaches a small hydraulic excavator, a detection unit such as a camera, a monitor, a buzzer, etc. is used to detect the driver and pedestrians. A system is needed to inform both of them of each other's approach.
In this embodiment, the cameras 41 to 43 are arranged in a vertical height range of 1.4 m or more and 1.6 m or less, so that pedestrians or the like approaching the small hydraulic excavator can be preferably imaged. This is of great practical benefit in providing a system that notifies both drivers and pedestrians of each other's approach.

In this embodiment, the first mounting member 100 includes a bridge portion 113 that bridges a right case mounting portion 111 to which the right camera case 51 is mounted and a rear case mounting portion 112 to which the rear camera case 52 is mounted.
Therefore, the bridging portion 113 can reinforce the portion between the right case mounting portion 111 and the rear case mounting portion 112 . Thereby, the supporting rigidity of each of the right case mounting portion 111 and the rear case mounting portion 112 can be increased. Therefore, the right camera 41 attached to the right camera case 51 and the rear camera 42 attached to the rear camera case 52 can be prevented from being affected by vibrations from the vehicle body.

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 .
Therefore, the connecting member 150 can reinforce the portion between the first mounting member 100 and the frame 25 . Thereby, the support rigidity of the first attachment member 100 can be increased. Therefore, the cameras 41 and 42 attached to the first attachment member 100 can be prevented from being affected by vibrations from the vehicle body.

In this embodiment, as shown in FIG. 14, the detection unit mounting structure 40 includes a wiring bundle 85 that connects two of the plurality of cameras 41 to 43 and the control unit 90 provided on the frame 25. As shown in FIG. The wiring bundle 85 is arranged avoiding the tilt floor 92 which is movable between the seating position and the tilt position with respect to the frame 25 .
Therefore, the wiring bundle 85 does not hinder the operation of the tilt floor 92 when the tilt floor 92 operates. Therefore, the tilt floor 92 can be smoothly operated.

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 detection unit mounting structure 40 described above.
Therefore, it is possible to provide the hydraulic excavator 1 capable of improving workability.

In this embodiment, the first attachment member 100 is detachably attached to the frame 25 by fastening members such as bolts.
Therefore, the first mounting member 100 can be retrofitted to the frame 25 .

In this embodiment, the second mounting member 200 is detachably attached to the tilt floor 92 by a fastening member such as a bolt.
Therefore, the second mounting member 200 can be retrofitted to the tilt floor 92 .

In this embodiment, as shown in FIG. 3, the first mounting member 100 is arranged to avoid the cab 21 that is movable with respect to the frame 25 between the seating position and the tilt position.
Therefore, the first mounting member 100 does not hinder the tilting operation of the cab 12 when the cab 21 tilts. Therefore, the cab 21 can be tilted smoothly.
In addition, the first mounting member 100 is arranged to avoid the opening/closing trajectory of the rear cover 24 . Therefore, when the rear cover 24 is opened and closed, the first mounting member 100 does not hinder 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 the cab 12 is tilted up or the rear cover 24 is opened to perform inspection (for example, engine inspection) or maintenance of the various devices 27, the first mounting member 100 does not need to be removed. Excellent workability.

In this embodiment, as shown in FIG. 5, the first mounting member 100 is arranged to avoid the opening/closing trajectory of the right side cover 22 .
Therefore, when the right side cover 22 is opened and closed, the first mounting 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 performed smoothly. In addition, when the right side cover 22 is opened for inspection or maintenance (for example, cleaning) of the various devices 28, the first mounting member 100 does not need to be removed, which improves the workability of inspection and maintenance.

In this embodiment, as shown in FIG. 6, the first mounting member 100 is arranged so as to avoid the opening/closing trajectory of the sand cover 23 .
Therefore, the first mounting member 100 does not hinder the opening and closing operation of the earth and sand cover 23 when the earth and sand cover 23 is opened and closed. Therefore, the opening and closing operation of the sand cover 23 can be performed smoothly. In addition, when the sand cover 23 is opened and various tanks 29 are replenished, etc., there is no need to remove the first mounting member 100, so workability is excellent.

<Other embodiments>
In the above-described embodiment, each of the right camera and the rear camera has been described as an example arranged inside the vehicle body with respect to the first mounting member, but the present invention is not limited to this. For example, each of the right camera and the rear camera may be arranged outside the vehicle body relative to the first mounting member. For example, each of the right camera and the rear camera may be arranged outside the outer periphery of the upper rotating body. For example, each of the right camera and the rear camera may be arranged inside the vehicle body from the protector (not shown). For example, the arrangement of the right camera and the rear camera can be changed according to required specifications.

In the above-described embodiment, the right camera among the plurality of cameras is attached to the bent portion, but the present invention is not limited to this. For example, the right camera may be attached to a straight section. For example, each camera may be attached to the right rear pipe without going through the camera case. For example, the manner in which each camera is attached to the first attachment member can be changed according to required specifications.

In the above-described embodiment, an example in which the second mounting member to which the left camera can be mounted is supported by the tilt floor has been described, but the present invention is not limited to this. 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 mounted may be supported by the tilt floor.

In the above-described embodiment, an example in which the second mounting member is attached to the tilt floor at a plurality of locations has been described, but the present invention is not limited to this. For example, the second mounting member may be attached to the tilt floor at only one point. For example, the mounting mode of the second mounting member can be changed according to required specifications.

In the above-described embodiment, an example in which the left camera is arranged inside the vehicle body relative to the second mounting member has been described, but the present invention is not limited to this. For example, the left camera may be arranged outside the vehicle body relative to the second mounting member. For example, the left camera may be arranged outside the vehicle body with respect to the outer peripheral edge of the upper rotating body. For example, the left camera may be arranged inside the vehicle body from the protector (not shown). For example, the layout of the left camera can be changed according to required specifications.

In the above-described embodiment, an example in which a plurality of cameras are arranged in a height range of 1 m or more and 2 m or less in the vertical direction has been described, but the present invention is not limited to this. For example, a plurality of 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 of more than 2 m. For example, the installation height of each camera can be changed according to the required specifications.

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

In the above-described embodiment, the detection unit mounting structure has been described as an example in which the connecting member extends along the vertical direction and connects the first mounting member and the frame, but the present invention is not limited to this. For example, the detection unit mounting structure does not have to include a connecting member. For example, the right rear pipe and the frame may be arranged apart from each other in the vertical direction. For example, the connection mode between the first mounting member and the frame can be changed according to required specifications.

In the above-described embodiment, the detection unit mounting structure includes a wiring bundle that connects two of the plurality of cameras and the control unit provided on the frame, and the wiring bundle extends between the seating position and the tilt position with respect to the frame. Although the example of avoiding the movable tilt floor has been described, the present invention is not limited to this. For example, the wiring bundle may have a length that can follow the movement of the tilt floor and may be partially arranged on the tilt floor. For example, the detection unit mounting structure may not include a wiring bundle. For example, each camera may incorporate a control unit that can communicate wirelessly. For example, the layout of wiring connecting at least one of the plurality of cameras and the controller provided on the frame can be changed according to the required specifications.

In the above-described embodiment, an example including a right camera, a rear camera, and a left camera has been described as an example of a plurality of detection units, but the present invention is not limited to this. 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 detectors may comprise radar. For example, the multiple detectors may include cameras and radars, or may include only radars. For example, the aspect of the plurality of detection units can be changed according to required specifications.

In the above-described embodiment, as an example of the hydraulic excavator, a small hydraulic excavator used at a construction site such as a road on which pedestrians pass has been described, but the hydraulic excavator is not limited to this. For example, the hydraulic excavator may be a large hydraulic excavator such as a mining excavator used in mines and the like. For example, the aspect of the hydraulic excavator can be changed according to the required specifications.

In the above-described embodiment, a hydraulic excavator is described as an example of a working machine (working vehicle), but the present invention is not limited to this. For example, the present invention may be applied to other work vehicles such as dump trucks, bulldozers, and wheel loaders.

In the above-described embodiment, the detection unit mounting structure has been described with an example including a plurality of detection units that detect the surroundings of the hydraulic excavator, but the present invention is not limited to this. For example, the detector mounting structure may include a plurality of detectors that detect the surroundings of a work vehicle other than the hydraulic excavator. The aspect of the detection unit mounting structure can be changed according to the required specifications.
For example, the detection unit mounting structure includes a plurality of detection units that detect the surroundings of the work machine, and a tilt floor that is movable between a seating position and a tilt position with respect to the frame of the work machine. and an attachment member to which at least one of the parts can be attached.
By the way, when the detection unit is attached near the tilt floor, the detection unit may interfere with the operation of the tilt floor.
In contrast, in this aspect, since the mounting member to which at least one of the plurality of detection units can be attached is supported by the tilt floor, the detection unit moves together with the tilt floor when the tilt floor operates. parts do not interfere with the operation of the tilt floor. Therefore, the tilt floor can be smoothly operated.

In the above-described embodiment, the configuration in which the cab of the work machine is provided with a monitor, a buzzer, etc. has been described, but the present invention is not limited to this. For example, a monitor, a buzzer, or the like may be provided in a remote control seat for remotely controlling working machines, or in a control room for overall management and control of a plurality of working machines. For example, a monitor, a buzzer, or the like may be provided on the mobile terminal so that the operator can see the image displayed on the mobile terminal. In such a case, communication means may be provided in each of the work machine, the remote control seat, the control room, and the mobile terminal, and information such as images may be transmitted and received.

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 scope of the present invention. , it is also possible to appropriately combine the embodiments described above.

DESCRIPTION OF SYMBOLS 1... Hydraulic excavator (working machine), 21... Cab, 25... Frame, 40... Detection part mounting structure, 41... Right camera (detection part), 42... Rear camera (detection part), 43... Left camera (detection part) , 81... Wiring (wiring) of the right camera, 82... Wiring of the rear camera, 82... Wiring bundle (wiring), 90... Control section, 92... Tilt floor, 100... First mounting member, 111... Right case mounting section ( A portion to which one of at least two of the plurality of detection units is attached), 112 ... rear case attachment portion (a portion to which the other of at least two of the plurality of detection portions is attached), 113 ... bridging portion, 122 ... first bending portion (bending portion), 150... Connecting member, 200... Second mounting member, HR... Height range

Claims (12)

a plurality of detection units provided in at least two locations including a side surface side and a rear surface side of the work machine and detecting the surroundings of the work machine;
a first mounting member supported by the frame of the work machine and capable of mounting at least two of the plurality of detection units;
The first attachment member is attached to the frame at least at two locations including a side surface side and a rear surface side of the working machine. At least two of the plurality of detection units,
a right camera that captures an image of the right side of the work machine;
a rear camera that captures an image behind the work machine;
The detection unit mounting structure according to claim 1, wherein each of the right camera and the rear camera is arranged inside the vehicle body with respect to the first mounting member. The first mounting member has a bent portion that curves in plan view,
3. The detector mounting structure according to claim 1, wherein at least one of the plurality of detectors is attached to the bent portion. the plurality of detection units include a left camera that captures an image of the left side of the work machine;
4. The camera according to any one of claims 1 to 3, further comprising a second mounting member supported by a tilting floor movable between a seated position and a tilting position with respect to the frame and capable of mounting the left camera. Detection unit mounting structure. The detection unit mounting structure according to claim 4, wherein the second mounting member is mounted on the tilt floor at a plurality of positions. The detection unit mounting structure according to claim 4 or 5, wherein the left camera is arranged inside the vehicle body with respect to the second mounting member. The detection unit mounting structure according to any one of claims 1 to 6, wherein the plurality of detection units are arranged in a height range of 1 m or more and 2 m or less in the vertical direction. The detection according to any one of claims 1 to 7, wherein the first attachment member includes a bridging portion that bridges a portion to which one of at least two of the plurality of detection portions is attached and a portion to which the other is attached. part mounting structure. The detection unit mounting structure according to any one of claims 1 to 8, further comprising a connecting member that extends in the vertical direction and connects the first mounting member and the frame. further comprising wiring that connects at least one of the plurality of detection units and a control unit provided on the frame;
The detection unit mounting structure according to any one of claims 1 to 9, wherein the wiring is arranged to avoid a tilt floor that is movable between a seating position and a tilt position with respect to the frame. a plurality of detection units for detecting the surroundings of the working machine;
a mounting member supported by a tilt floor movable between a seated position and a tilt position with respect to a frame of the work machine, and capable of mounting at least one of the plurality of detectors. a frame;
a cab provided above the frame;
A working machine, comprising: the detection unit mounting structure according to any one of claims 1 to 11.

Images