Work equipment

Abstract

To properly illuminate an imaging area by a rear-side camera and a visual contact area of an operator to improve workability under a dark environment.SOLUTION: A work machine (1) is provided with: a machine body (3); a cabin (5) installed on the machine body (3); a motor (6) installed at a rear part of the machine body (3); a bonnet (7) covering a rear side of the motor (6) openably and closably; a counter weight (8) provided below the bonnet; a rear side illuminating lamp (20) arranged at an upper part behind the cabin (5) to illuminate a rear side of the machine body (3); and a rear-side camera (21) arranged in the bonnet (7) to photograph the rear side of the machine body (3).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work machine such as a backhoe. [Background technology]

[0002] Conventionally, work machines (work machinery, construction machinery) are known, as disclosed in Patent Documents 1 and 2. The work machines disclosed in Patent Documents 1 and 2 are equipped with rear lights (rear confirmation lights, illuminating lights) that illuminate the area behind the machine body, and a rear camera (rear confirmation camera, rear camera) that captures images behind the machine body. With these work machines of the prior art, even in dark environments such as at night, it is possible to perform work while visually checking the image behind the machine body captured by the rear camera. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-202331 [Patent Document 2] Patent No. 6106408 Summary of the Invention [Problem to be solved by the invention]

[0004] However, all of the above-mentioned conventional technologies relate to large-sized work machines. In the case of large-sized work machines, the rear of the machine body protrudes significantly behind the cabin, and a counterweight is disposed on the protruding portion to balance the work equipment, with the rear camera and rear lighting being disposed as a set on the counterweight at the rear end of the machine body.

[0005] Therefore, in the above-mentioned conventional technology, even if the rear lighting can illuminate the imaging area of ​​the rear camera, there is a problem in that the visual range cannot be sufficiently illuminated when the operator in the cabin looks directly behind.

[0006] An object of one aspect of the present invention is to improve workability in dark environments by appropriately illuminating an area captured by a rear camera and an area viewed by an operator. [Means for solving the problem]

[0007] In order to solve the above problems, a work machine according to one aspect of the present invention is characterized by comprising a body, a cabin located on top of the body, a rear light located at the rear upper part of the cabin and illuminating the area behind the cabin, above the rear of the body, and the area behind the body, and a rear camera located at the rear of the body and behind the cabin and capturing images of the area behind the body.

[0008] According to the above configuration, the provision of the rear lighting improves visibility when using the rear camera even in a dark environment, thereby improving workability in a dark environment.

[0009] Moreover, in the above configuration, the rear lights are not arranged as a set with the rear camera near the rear camera, but are deliberately installed separately from the rear camera at the upper rear of the cabin.

[0010] This allows the light to be emitted from a higher position than the hood, expanding the illumination range behind the aircraft compared to when the rear camera is placed on the hood in combination with the light source, further improving workability in dark environments.

[0011] Furthermore, when the operator in the cabin turns around to directly view the rear of the aircraft, he or she can see the rear of the aircraft, including positions higher than the hood, improving direct visibility and thereby further improving workability in dark environments.

[0012] In the work machine according to one aspect of the present invention, the rear illumination lamp may be installed so as to illuminate the vicinity of the machine body within an imaging range of the rear camera.

[0013] According to the above configuration, the light is irradiated to the vicinity of the machine body within the imaging range of the rear camera, so that the operator can use the rear camera to check with good visibility the situation near the rear end of the machine body, which is the area of ​​greatest interest to the operator, thereby further improving workability in dark environments.

[0014] In the work machine according to one aspect of the present invention, the rear camera may be installed so that the rear end of the machine body is within an imaging range.

[0015] According to the above configuration, the rear end of the vehicle is within the imaging range of the rear camera, making it easier for the operator to grasp the distance between the rear end of the vehicle and obstacles located behind the vehicle.

[0016] In the work machine according to one aspect of the present invention, the rear illumination lamp may be installed in the center of the cabin in the left-right direction.

[0017] According to the above configuration, the visible range when the operator in the cabin directly views the rear of the aircraft can be appropriately illuminated.

[0018] In addition, in a work machine according to one aspect of the present invention, in a side view, an angle formed between a straight line hanging down from the rear lighting lamp and a straight line passing through the rear lighting lamp and the rear camera may be 45° or less.

[0019] According to the above configuration, the light from the rear lighting installed in the cabin is prevented from being blocked by the hood or the like that protrudes further rearward from the aircraft than the cabin, and the rear lighting installed in the cabin can illuminate the rear of the aircraft from a position close to the aircraft.

[0020] In addition, in a work machine according to one aspect of the present invention, in a side view, the distance between an extension of a straight line passing through the rear lighting lamp and the rear camera and the rear end of the machine body may be 50 cm or less.

[0021] According to the above configuration, the rear camera can be used to check with good visibility the area near the rear end of the machine, which is the area the operator is most interested in. This further improves workability in dark environments.

[0022] In addition, a work machine according to one aspect of the present invention may include a hood that can be opened and closed to cover the rear of the cabin on the machine body, and a counterweight located below the hood, and the rear camera may be arranged on the hood.

[0023] According to the above configuration, the area above the hood and the rear of the aircraft body can be illuminated by the rear lighting provided at the upper rear part of the cabin. [Effects of the Invention]

[0024] According to one aspect of the present invention, the area captured by the rear camera and the area viewed by the operator can be appropriately illuminated, thereby improving workability in dark environments. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a schematic perspective view showing the overall configuration of a work machine according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic plan view of the work machine. [Figure 3] FIG. 2 is a schematic left side view of the work machine. [Figure 4] FIG. 2 is a schematic perspective view showing a main part of the rear part of the working machine. [Figure 5] 10 is a diagram showing an example of the illumination range of the rear lighting lamp and the imaging range of the rear camera on the ground when the work machine is viewed from above. FIG. [Figure 6] FIG. 4 is a diagram showing an example of the illumination range of a rear lamp when the work machine is viewed from the left side. [Figure 7] FIG. 10 is a diagram showing a working machine suitable for a configuration in which rear lighting is provided in the cabin and a rear camera is provided on the hood. DETAILED DESCRIPTION OF THE INVENTION

[0026] (Outline of work equipment 1) An embodiment of the present invention will be described below with reference to the drawings as appropriate. Fig. 1 is a schematic perspective view showing the overall configuration of a work machine 1 according to this embodiment. Fig. 2 is a schematic plan view of the work machine 1. Fig. 3 is a schematic left side view of the work machine 1. In this embodiment, a backhoe, which is a rotating work machine, is exemplified as the work machine 1.

[0027] As shown in Figures 1 to 3, the work machine 1 comprises a traveling device 2, a machine body 3, and a working device 4. The machine body 3 is supported on the frame of the traveling device 2 via a bearing body so as to be rotatable about a vertical axis (an axis extending in the up-down direction). The machine body 3 is equipped with a prime mover 6, a hood 7, a counterweight 8, the working device 4, etc.

[0028] The cabin 5 has a driver's seat (seat) inside where the operator (driver) sits. In the following description, the front side of the worker seated in the driver's seat will be referred to as the front, the rear side of the worker as the rear, the left side of the worker as the left, and the right side of the worker as the right. The cabin 5 is installed on the left side of the machine body 3. A forward lighting lamp 10 that illuminates the work area in front of the work machine 1 is installed in the upper front part of the cabin 5. In the example of Figures 1 and 2, two forward lighting lamps 10 are installed, one on the left and one on the right. A rear mirror 22 is installed in the upper rear right part of the cabin 5, and a front left mirror 23 is installed in the upper front left part of the cabin 5.

[0029] The prime mover 6 is located at the rear of the aircraft body 3. The prime mover 6 is located on the rear side of the cabin 5. The prime mover 6 is covered by a hood 7. The hood 7 is provided at the rear of the aircraft body 3, and covers the rear of the prime mover 6 in an openable and closable manner. The hood 7 is provided so as to be openable and closable with its front side near the rear of the cabin 5 as an axis.

[0030] The counterweight 8 is a weight for balancing the weight with the working device 4, and is located below (below) the hood 7. In this way, in a working machine 1 in which the counterweight 8 is located below the hood 7, the rear of the cabin 5 is located at the rear of the machine body 3. Also, in the working machine 1, the rear end of the counterweight 8 protrudes further rearward than the rear end of the hood 7.

[0031] The working device 4 is a device that operates using hydraulic oil pressure as a working fluid pressure, and is installed at the front of the machine body 3. The working device 4 includes a first boom 15, a second boom 16, an arm 17, a bucket 18, and the like, which are rotated by hydraulic cylinders 11, 12R, 12L, 13, and 14.

[0032] (Configuration for checking the rear of the aircraft) Fig. 4 is a schematic perspective view showing the main parts of the rear of the work machine 1. As shown in Fig. 4, the work machine 1 is equipped with a rear lighting lamp 20 located at the upper rear of the cabin 5 and illuminating the area behind the cabin 5, above the rear of the machine body 3, and the area behind the machine body 3, and a rear camera 21 located at the rear of the machine body 3 and behind the cabin 5 and capturing images of the area behind the machine body 3. Specifically, the rear camera 21 is located on the hood. In other words, in the work machine 1, in order to check the area behind the machine body 3, the rear camera 21 that captures images of the area behind the machine body 3 is disposed on the hood 7, and a rear lighting lamp 20 that illuminates the area behind the cabin 5, above the rear of the machine body 3, and the area behind the machine body 3 is disposed on the upper rear of the cabin 5.

[0033] In this way, by providing the rear lighting lamp 20, the work machine 1 can provide light to the rear of the cabin 5, above the rear of the machine body 3, and to the rear of the machine body 3, making it possible to work with good visibility while checking images captured of the rear of the machine body 3 even in dark environments such as at night.

[0034] The rear lighting lamp 20 is installed on the frame portion 5b above the rear opening 5a of the cabin 5 so that the main light beam is directed diagonally downward. The rear camera 21 is attached to the center in the left-right direction of the hood 7. More specifically, the rear camera 21 is installed below an emblem 24 that is attached to the curved portion of the hood 7 that extends from the top surface to the rear surface and protrudes rearward.

[0035] When installing the rear lighting lamps 20, it is possible to arrange them as a set near the rear camera 21, as in the large work machine of the prior art described above. In other words, the rear lighting lamps 20 are attached to the hood 7 together with the rear camera 21. By attaching the rear lighting lamps 20 as a set near the rear camera 21, there is an advantage that the necessary wiring behind the hood 7 can be done all at once.

[0036] However, in the work machine 1, the rear lighting lamps 20 are installed at the upper rear of the cabin 5, away from the rear camera 21. This arrangement takes advantage of the fact that in a work machine in which the counterweight 8 is located under the hood 7, the rear of the cabin 5 is located at the rear of the machine body 3.

[0037] This allows the light to be emitted from a position higher than the hood 7, and the illumination range behind the machine body 3 can be wider than when the rear lighting lamp 20 is placed on the hood 7 together with the rear camera 21. Specifically, the area behind the machine body 3 is illuminated, including the upper surface of the hood 7, part of the counterweight 8, the rear end of the traveling device 2, etc.

[0038] Furthermore, if the rear lights 20 are placed on the hood 7 together with the rear camera 21, they can only illuminate a position lower than the hood 7. Therefore, when the operator in the cabin 5 turns around and looks directly at the rear of the aircraft 3, the light is only irradiated near the ground, and visibility cannot be said to be good.

[0039] In contrast, by installing the rear lighting lamps 20 at the upper rear of the cabin 5, light is emitted from a position higher than above the head of the operator inside the cabin 5, and light can also be emitted to high positions behind the aircraft 3 that are distant from the ground, including above the hood 7. Therefore, when the operator inside the cabin 5 turns around to directly view the rear of the aircraft 3, he or she can view the rear of the aircraft 3, including positions higher than the hood 7, thereby improving visibility in direct vision.

[0040] It is also possible to configure the rear lamp 20 so that it can illuminate the engine 6 located inside the hood 7 when it is open, or the engine 6 when the hood 7 is removed. This eliminates the need to provide a separate light to illuminate the engine 6, improving convenience during maintenance.

[0041] Furthermore, the direction of the rear lamps 20 and the angle of the rear mirror 22 installed on the right side of the upper rear portion of the cabin 5 may be adjusted so that the light from the rear lamps 20 is reflected by the rear mirror 22 and directed to the motor 6. Furthermore, by reflecting the light from the rear lamps 20 by the rear mirror 22, the rear end of the fuselage 3 within the imaging range of the rear camera 21 may be illuminated.

[0042] The rear lighting lamp 20 may be installed so that the angle can be adjusted within a predetermined range in the vertical direction, the horizontal direction, or both directions, based on the state in which it is installed so that the main light beam is directed diagonally downward.

[0043] Fig. 5 is a diagram showing an example of the illumination range of the rear lamps 20 on the ground and the imaging range of the rear camera 21 when the work machine 1 is viewed from above. Fig. 6 is a diagram showing an example of the illumination range of the rear lamps 20 when the work machine 1 is viewed from the left side.

[0044] As shown in Fig. 5, the rear lights 20 are preferably installed so as to illuminate the vicinity of the airframe 3 within the imaging range RB of the rear camera 21. For example, as shown in Fig. 6, in a side view, the distance (shortest distance) L4 between an extension line L2 of a straight line L1 passing through the rear lights 20 and the rear camera 21 and the rear end of the airframe 3 is preferably 50 cm or less, more preferably 30 cm or less, and it is even more preferable that the extension line L2 intersects with the rear of the airframe 3. Furthermore, in a side view, the distance L6 on the ground surface 30 between the extension line L2 of the straight line L1 passing through the rear lights 20 and the rear camera 21 and a straight line L3 hanging down from the rear end of the airframe 3 is preferably 1 m or less, more preferably 50 cm or less.

[0045] According to the above configuration, light is irradiated to the vicinity of the machine body 3 in the imaging range RB of the rear camera 21, so that when the rear camera 21 is used in a dark environment, the operator can check with good visibility the condition of the vicinity of the rear end of the machine body, which is the area of ​​greatest interest to the operator. This further improves workability in dark environments.

[0046] In the work machine 1, the illumination range RA on the ground surface of the rear lighting 20 is located within the imaging range RB of the rear camera 21, excluding the portion that is further forward of the machine body 3 than the mounting position of the rear camera 21. The illumination range RA is the range in which light of 1 Lx or more is illuminated on the ground surface 30.

[0047] As an example, in the case of the work machine 1, as shown in Fig. 6, the rear lighting 20 is set so that light of 1 Lx or more can be irradiated onto the ground surface 30 from the rear end (straight line L3) of the counterweight 8, which is the rearmost part of the machine body 3, to a position 5 m rearward (L5 = 5 m). This allows the rear camera 21 to capture an image of the area from the rear end of the counterweight 8 to a position 5 m rearward with good visibility even in a dark environment. Note that the distance L5 = 5 m is merely an example.

[0048] 5, in the work machine 1, the rear camera 21 is preferably installed so that the counterweight 8 (or the rear end of the machine body 3) falls within the imaging range RB. With this configuration, the counterweight 8 falls within the image captured by the rear camera 21, making it easier for the operator to grasp the sense of distance between the rear end of the machine body 3 and an obstacle located behind the machine body 3.

[0049] 1, the rear lighting lamp 20 may be installed in the center of the cabin 5 in the left-right direction. With such a configuration, it is possible to appropriately illuminate the visibility range when the operator inside the cabin 5 directly views the rear of the machine body 3. In addition, the rear lighting lamp 20 does not obstruct the visibility of the rear mirror 22 installed on the right side of the upper rear of the cabin 5. In addition, since it is possible to illuminate the undercarriage part at the rear left side of the machine body 3 where the entrance and exit of the cabin 5 are located, it is easy for the operator to see his or her feet when getting on or off the work machine 1.

[0050] (Configuration suitable for installing rear lighting at the rear upper part of the cabin) Here, a work machine suitable for a configuration in which rear lighting 20 is arranged in the upper rear part of the cabin 5 and a rear camera 21 is arranged on the hood 7 will be described. Fig. 7 is a diagram showing a work machine 1 suitable for a configuration in which rear lighting 20 is arranged in the cabin 5 and a rear camera 21 is arranged on the hood 7.

[0051] As shown in Fig. 7, when viewing the work machine 1 from the side, the angle θ formed between a line L7 hanging down from the rear lighting lamps 20 and a line L1 passing through the rear lighting lamps 20 and the rear camera 21 is preferably 45° or less, and more preferably 34° or less. With this configuration, it is possible to prevent light from the rear lighting lamps 20 installed in the cabin 5 from being blocked by the hood 7 or the like that protrudes rearward from the machine body 3 beyond the cabin 5, and the rear lighting lamps 20 installed in the cabin 5 can illuminate the rear of the machine body 3 from a position close to the machine body 3. The smaller the angle θ, the less the irradiated light is blocked by the rear of the machine body 3, which is preferable.

[0052] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0053] 1 Work equipment 2 Running gear 3 aircraft 4 Work equipment 5 Cabins 6. Prime Mover 7. Bonnet 8 Counterweight 10. Forward Lights 20 Rear illumination light 21 Rear camera 22 Rear mirror 30 Earth's surface L1: A straight line passing through the rear light and rear camera L2 extension line L3 A straight line hanging down from the rear end of the aircraft L4 separation distance L7 A straight line hanging down from the rear light RA irradiation range RB imaging range

Claims

1. The aircraft and a cabin located on the fuselage; a rear lighting lamp located at an upper rear portion of the cabin and illuminating an area behind the cabin, an area above the rear portion of the airframe, and an area behind the airframe; a rear camera located at the rear of the aircraft body and at the rear of the cabin, the rear camera capturing an image of the rear of the aircraft body; the rear lighting is installed to illuminate the vicinity of the aircraft within the imaging range of the rear camera, In a side view, the angle formed by a straight line hanging down from the rear lighting lamp and a straight line passing through the rear lighting lamp and the rear camera is 45° or less.

2. The work machine according to claim 1 , wherein the rear camera is installed so that the rear end of the machine body is included in the imaging range.

3. The work machine according to claim 1, wherein the rear lighting lamp is installed at the center of the cabin in the left-right direction.

4. 2. The work machine according to claim 1, wherein, in a side view, a distance between an extension of a straight line passing through the rear lighting lamp and the rear camera and the rear end of the machine body is 50 cm or less.

5. The aircraft and a cabin located on the fuselage; a rear lighting lamp located at an upper rear portion of the cabin and illuminating an area behind the cabin, an area above the rear portion of the airframe, and an area behind the airframe; a rear camera located at the rear of the aircraft body and at the rear of the cabin, the rear camera capturing an image of the rear of the aircraft body; the rear lighting is installed to illuminate the vicinity of the aircraft within the imaging range of the rear camera, In a side view, the distance between the extension of a straight line passing through the rear lighting lamp and the rear camera and the rear end of the machine body is 50 cm or less.

6. a hood that opens and closes to cover the rear of the cabin in the aircraft body; a counterweight located below the bonnet, 6. The work machine according to claim 1, wherein the rear camera is disposed on the hood.

Images