Work vehicles

Abstract

To provide a service vehicle including a state display lamp which can be viewed from anywhere while preventing damage.SOLUTION: A state display lamp 40 for displaying a state of a traveling vehicle body 1 is provided at a cabin 16 enclosing a driver seat 7 through brackets 41, 42. The state display lamp 40 is provided in a manner that its attitude can be changed between a working attitude at which the state display lamp 40 protrudes to a position above a cabin roof 22 and a storage attitude at which the state display lamp 40 does not protrude to the position above the cabin roof 22.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a work vehicle such as an agricultural tractor, and more particularly to an installation configuration for a status indicator light that displays the vehicle body status, such as when the vehicle is traveling autonomously. [Background technology]

[0002] A work vehicle is known that is equipped with a status detection unit that detects the status of a vehicle body capable of autonomous driving, and a status display unit that displays the detected status, with the status display unit being positioned outside the cabin of the work vehicle, outside the running vehicle body, and inside the outer end of the running vehicle body (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-137159 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the configuration disclosed in Patent Document 1, it is possible to provide high visibility while preventing damage. However, in the above configuration, the status display unit is installed inside the outer end of the traveling vehicle body, so it may be in a blind spot for an outside observer. On the other hand, if the status display unit is installed outside the outer end of the vehicle body so that it can be seen from a wide angle, there is a risk that the status display unit will be caught on a cover such as a rain cover that covers the entire vehicle and damaged.

[0005] In view of the above, an object of the present invention is to provide a work vehicle equipped with a status indicator light that can be seen from anywhere while preventing damage. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides the following technical solutions.

[0007] In the first aspect of the present invention, a cabin (16) surrounding a driver's seat (7) is provided with status indicator lights (40) for indicating the status of a vehicle body (1) running through brackets (41, 42), and a cabin door (50) for an operator to enter and exit the cabin (16), The status indicator lamp (40) is provided in a working position where it protrudes above the cabin roof (22) and in a non-working position where it protrudes above the top end of the cabin door (50). And the side of the cabin roof (22) The work vehicle is characterized in that the door is provided near the cabin door (50) so as to be changeable to a storage position in which the door is located below the cabin roof (22) and does not protrude above the cabin roof (22). The second present invention is a work vehicle according to the first present invention, in which a support seat bracket (42) that supports and fixes a status indicator light (40) is configured to be fastened at two points with bolts (43) to an indicator light bracket (41) fixed to the cabin (16) side, one of the two bolts (43a) is configured to be able to change its position along an arc-shaped guide (41a) formed on the indicator light bracket (41) with the other bolt (43b) as the center, and the status indicator light (40) is able to be folded down toward the cabin door (50) toward the rear of the vehicle body and is configured to be able to be changed between an upright working position and a folded-down storage position. The third present invention is a work vehicle according to the first or second present invention, which is provided with a positioning unit (25) that measures the position of the vehicle body (1) above the cabin roof (22), a protective frame (33L, 33R) that protects the positioning unit (25), and is configured so that the upper end of the status indicator light (40) in the working position is lower than the protective frame (33L, 33R), and the status indicator light (40) is located inside the vehicle body (1) relative to the side mirrors (47, 47) provided in the cabin (16). The first invention related to the present invention is provided in a cabin 16 surrounding a driver's seat 7 with a status indicator light 40 that displays the status of a traveling vehicle body 1 via brackets 41, 42, and the status indicator light 40 is arranged so as to be changeable between an operating position in which it protrudes above the cabin roof 22 and a storage position in which it does not protrude above the cabin roof 22.

[0008] The second invention related to the present invention teeth, The first invention related to the present invention In the vehicle, a cabin door 50 is provided for an operator to enter and exit the cabin 16, and when a status indicator lamp 40 is in a stored position, it is configured to be located above the upper end of the cabin door 50 and below the cabin roof 22.

[0009] The third invention related to the present invention teeth, The first or second invention related to the present invention In the above, a support seat bracket 42 which supports and fixes a status indicator lamp 40 is configured to be fastened at two points with bolts 43 to an indicator lamp bracket 41 which is fixed to the cabin 16 side, and one of the two points 43a is configured so as to be able to change its position along an arc-shaped guide 41a formed on the indicator lamp bracket 41, centered on the other bolt 43b, so as to be able to be changed between an upright working position and a laid-down storage position.

[0010] The fourth invention related to the present invention teeth, Any one of the first to third inventions related to the present invention In the vehicle, a positioning unit 25 for measuring the position of the vehicle body 1 is provided above a cabin roof 22, protective frames 33L, 33R are provided to protect the positioning unit 25, and the upper end of a status indicator lamp 40 in a working position is located lower than the protective frames 33L, 33R, and the status indicator lamp 40 is located inside the vehicle body 1 more than side mirrors 47, 47 provided in the cabin 16. Effect of the Invention

[0011] According to the present invention, by raising the status indicator light 40 during work travel and projecting it above the cabin roof 22, it can be seen by anyone watching from anywhere in the vicinity, and by storing it when not traveling, such as when parked in a barn, the storage space can be saved, and when a rain or dust cover is placed over the entire vehicle body, excessive load is not placed on the status indicator light 40, preventing damage to it. The first invention related to the present invention According to the document, by raising the status indicator light 40 during work travel and projecting it above the cabin roof 22, it can be seen by anyone watching from anywhere in the vicinity, and by storing it when not traveling, such as when parked in a barn, the storage space can be saved, and when a rain or dust cover is placed over the entire vehicle body, excessive load is not placed on the status indicator light 40, preventing damage thereto.

[0012] The second invention related to the present invention According to The first invention related to the present invention In addition to the above effect, the cabin door 50 can be opened and closed even when the status indicator lamp 40 is in the stored position, and passengers can freely get in and out of the driver's compartment.

[0013] The third invention related to the present invention According to The first or second invention related to the present invention In addition to the above effect, the position of the status indicator lamp 40 can be easily changed by fastening the bolts.

[0014] The fourth invention related to the present invention According to Any one of the first to third inventions related to the present invention In addition to the above effects, when the rain cover or dust cover is placed on the vehicle body, even if the status indicator lamp 40 is in the working position, the load of the cover can be distributed, and damage can be prevented even if the cover is placed on the vehicle body while it is in the working position. [Brief description of the drawings]

[0015] [Figure 1] 1 is a side view of a tractor according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a front view of a tractor according to an embodiment of the present invention. [Diagram 3] 1 is a front top perspective view of a cabin of a tractor according to an embodiment of the present invention; [Figure 4] 1 is a perspective view of a cabin of a tractor according to an embodiment of the present invention, viewed from below and in front; [Diagram 5] 1 is a perspective view of a roof of a tractor according to an embodiment of the present invention, viewed obliquely from above and in the front; [Figure 6] 1 is a perspective view of a roof of a tractor according to an embodiment of the present invention, viewed obliquely from above and behind. [Figure 7] FIG. 2 is a side view of the front upper part of a cabin of the tractor according to the embodiment of the present invention. [Figure 8] FIG. 2 is a perspective view showing a status indicator light and its supporting structure on the right side of the vehicle body of the tractor according to the embodiment of the present invention. [Figure 9] FIG. 2 is a perspective view showing a status indicator light and its supporting structure on the left side of the vehicle body of the tractor according to the embodiment of the present invention. [Figure 10] 1 is a perspective view of a positioning unit, a communication control unit, and a supporting structure of a tractor according to an embodiment of the present invention, viewed obliquely from the rear. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0017] Regarding the symbols L and R, when indicating a pair of left and right components, the left side of the vehicle body 1 will be denoted by L and the right side by R, and in some cases, L and R will be omitted.

[0018] FIG. 1 shows a tractor, in which a diesel engine E is mounted inside a bonnet 2 at the front of a traveling body 1, and the rotational power of the engine E is transmitted to a transmission in a transmission case 3, and the rotational power is reduced by the transmission and transmitted to front wheels 4 and rear wheels 5. A steering wheel 6 for steering the front wheels 4 is provided behind the engine E, and a driver's seat 7 is installed behind the steering wheel 6. A hydraulic cylinder case 8 is provided at the upper rear of the transmission case 3, and lift arms 9 constituting a part of a hydraulic lifting mechanism are rotatably attached to both the left and right sides of the cylinder case 8. The lift arms 9 move up and down by the extension and contraction of a lifting hydraulic cylinder 10. A three-point link mechanism consisting of a top link 11 and left and right lower links 12 is provided at the rear of the vehicle body, and a rotary working machine R is attached to the link mechanism, and the lower links 12 are connected to the lift arms 9 via lift rods 13, so that the working machine R can be lifted and lowered.

[0019] The steering wheel 6, the driver's seat 7, etc. are covered by a cabin 16. The cabin 16 is fixed to the vehicle body via an elastic member such as vibration isolating rubber, so that vibrations of the vehicle body are not easily transmitted to the cabin 16.

[0020] The cabin 16 is formed as an integrated framework consisting of a floor 17, front pillars 18 erected at the front left and right parts of the floor 17, rear pillars 20 erected at the rear left and right parts of the driver's seat 7, an intermediate pillar 62 erected in the middle of the left and right fenders 19, and an upper frame 21 connecting the upper ends of these pillars, and is covered with a roof 22.

[0021] The roof 22 of the cabin 16 is equipped with devices related to driving support such as a surveillance camera, an obstacle sensor, a positioning controller, a camera controller, etc. The mounting configuration of these devices will be described in detail below. The surveillance camera 23 captures images of the front, rear, and sides of the tractor body to obtain image data, and the positioning controller 25 as a positioning unit transmits and outputs information for calculating the position of the body to a control unit C equipped on the body 1 via a camera controller 27 as a communication control unit that communicates with a communication terminal. The obstacle sensor 24 is, for example, an infrared sensor, and can detect obstacles in front of and behind the body. In this embodiment, the camera controller 27 is given as an example of a communication control unit, but it may be replaced with a controller that calculates and controls sensor information of each part of the body 1.

[0022] The positioning controller 25 includes a positioning antenna (not shown), a base station (not shown) information receiving antenna 26, a calculation unit (not shown), and an output unit (not shown), and acquires satellite signals from GPS satellites and the like using the positioning antenna, and calculates the vehicle's position information, traveling direction, and the like by processing the satellite signals and correction signals received from the base station by the antenna 26 in the calculation unit. This position information, etc. is transmitted to the control unit C by the output unit.

[0023] The camera controller 27 is also configured to include a calculation unit that processes the image data captured by the surveillance camera 23, a transmission circuit (not shown) that transmits the calculation results, and multiple (two in the illustrated example) communication antennas 28. The calculation results of the image data are transmitted to a control unit C mounted on the vehicle body 1.

[0024] In addition, the location information and image data, etc. transmitted to the control unit C can be configured to be transmitted to an external management server, and by providing a communication terminal (e.g., a portable terminal) capable of communicating with this management server, it is possible to obtain information about the vehicle body 1 through this communication terminal to check the vehicle body condition, or to remotely operate the vehicle body 1.

[0025] The housing 27a housing the camera controller 27 and the housing 25a housing the computing unit and the like of the positioning controller 25 are disposed above the front side of the roof 22. That is, a band-shaped front frame 31 supported in a horizontal position so as to span between bracket members 30L, 30R fixed to the front support 18 or the upper frame 21 is provided, and the housing 27a of the camera controller and the housing 25a of the positioning controller 25 are disposed and fixed in the front and rear positions at the left and right intermediate portions of the front frame 31. The front frame 31 is disposed so as to be positioned slightly forward of the upper end of the windshield 51 in a side view of the vehicle body 1.

[0026] In detail, a forward protruding body (protruding frame) 32f having a U-shape in plan view is fixed to the front wall of the front frame 31 at the center of the left and right, and a rear protruding body (protruding frame) 32r having a similar U-shape and a slightly long length is fixed to the rear wall, and a flat plate 32a is fixed to the upper surfaces of the front and rear protruding bodies 32f and 32r, thereby forming a control unit bracket 32 ​​spanning the front and rear of the front frame 31. Then, the housing 27a of the camera controller 27 is fixed to the front position, and the housing 25a of the positioning controller 25 is fixed to the upper surface of the control unit bracket 32, with the housing 27a being disposed in the front position and the housing 25a being disposed in the rear position, respectively. For example, a flange portion formed on the housing side is overlapped with the control unit bracket 32, and the overlapping portion is bolted.

[0027] Antenna guards 33L, 33R are provided on the left and right sides of the control unit bracket 32 ​​as protective frames. That is, a round bar is formed into a U-shape, and the lower ends of the front legs 33Lf, 33Rf are inserted into small receiving parts 34L, 34R fixed in a state of protruding forward from the upper end of the front frame 31, and fixed by nuts or the like. On the other hand, the rear legs 33Lr, 33Rr of the antenna guards 33L, 33R are provided so as to be able to come close to and come into contact with the upper surface of the cabin roof 22, and a shock-absorbing rubber 35 is provided at their lower ends. Specifically, the cylindrical rubber 35L, 35R is configured to be inserted from the lower ends of the rear legs 33Lr, 33Rr, and with this configuration, even if the antenna guards 33L, 33R are pressed by vehicle body vibration or external force and come into contact with the cabin roof 22, the upper surface will not be damaged. The antenna guards 33L, 33R are set to a height equal to or higher than the height of the antenna 26 of the positioning controller 25 and the height of the communication antennas 28, 28 of the camera controller 27. They are positioned slightly wider than the left-right width of the housing 25a of the positioning controller 25 and the housing 27a of the camera controller 27, and slightly higher than the antennas 26, 28, 28, so that the housings 25a, 27a and the antennas 26, 28, 28 can be guarded.

[0028] In side view, the antenna guards 33L, 33R are positioned so as to overlap the antenna 26 of the positioning controller 25 and the communication antennas 28, 28 of the camera controller 27, so that the antenna 26 can be protected when the hood member that covers the vehicle body to protect it from wind and rain is being put on or removed, and there is little risk of damage due to unexpected interference.

[0029] Since the positioning controller 25 and the camera controller 27 are arranged close to each other in the front and rear, the harnesses 36 can be bundled together and arranged along the rear wall surface of the front frame 31, thereby facilitating the wiring work and improving the neatness of the finished product.

[0030] A front camera 23f capable of capturing an image of the area in front of the vehicle body 1 is disposed in front of the front frame 31. That is, a pair of camera brackets 37 are provided in the center of the front of the front frame 31, and the camera body is provided so that the image capturing angle can be adjusted up and down. Therefore, the front camera 23f can be protected by the control unit bracket 32 ​​and the camera controller 27 located above. Note that the positioning controller 25 as the positioning unit and the camera controller 27 as the communication control unit can be disposed in an interchangeable manner, but when the positioning controller 25 is disposed in the front position, it can be protected by the control unit bracket 32 ​​and the positioning controller 25.

[0031] At the rear end side of the control unit bracket 32, flat plates 32a are fixed to the upper surfaces of the front and rear protrusions 32f, 32r so as to keep a constant gap between the bracket 32 ​​and the cabin roof 22, but since there is a risk that the bracket 32 ​​may swing back and forth around the contact point with the front frame 31, a treatment is provided to prevent damage due to contact with the roof 22. That is, a buffer material 38 is provided below the rear end side of the control unit bracket 32. With this configuration, vibrations transmitted from the roof 22 of the cabin 16 can be suppressed, and damage due to contact with the roof 22 is prevented.

[0032] Next, the installation configuration of the status indicator lamp 40 that displays the status during autonomous driving when the traveling vehicle body 1 is configured to be able to travel autonomously will be described. The status indicator lamp 40 is configured to be layered and capable of lighting different warning colors, and is configured to distinguish the status of the vehicle body 1 during autonomous driving by various lighting methods, for example, by lighting green for normal work driving, lighting red for abnormality, lighting yellow for obstacle detection, and flashing when the vehicle is stopped, and is arranged on the left and right sides of the front of the cabin 16. That is, a support seat bracket 42 is fixed to an indicator lamp bracket 41 on the front support column 18 of the cabin 16, and the above-mentioned status indicator lamp 40 is fixed to this support seat bracket 42 in an upright state. The status indicator lamp 40 fixed to the support seat plate 42 is arranged so as to be located on the opposite side of the head position of the operator seated in the driver's seat 7 across the front support column 18, and during normal driving by various operations by the operator, the indicator lamp 40 can be hidden by the front support column 18 without obstructing the operator's field of vision.

[0033] The indicator light bracket 41 is fixed to the front support 18 by welding or the like, and the support seat bracket 42 is provided so that the angle can be freely changed relative to the indicator light bracket 41. That is, the indicator light bracket 41 is fastened to the indicator light bracket 41 at two points by a combination of bolts 43 and nuts 44 so that it can be detached from the bracket, but one of the two points 43a, 44a can be arbitrarily changed in position along the arc-shaped guide (arc-shaped guide hole) 41a formed in the indicator light bracket 41, centered on the other 43b, 44b, and fastened. Therefore, the angle of the support seat plate 42 and the status indicator light 40 can be changed so that they can be collapsed backward together, and they can be switched between an upright working position and a collapsed storage position (Fig. 7). The height of the support seat bracket 42 and the rotation angle of the status indicator light 40 are set (designed) so that the indicator light 40 protrudes above the cabin roof 22 in the upright working position and does not protrude above the cabin roof 22 in the collapsed storage position. By keeping the vehicle in the stored position when not traveling, such as when stored in a barn, the space in the storage barn can be saved, and further, when the entire vehicle body is covered, if the status indicator lamp 40 is in the upright position, a load is applied and the vehicle is likely to be damaged, but in the stored position where the vehicle is laid down, the load can be reduced and damage can be prevented.

[0034] The status indicator lamp 40 in the stored position is set to be located above the upper end of the cabin door 50 and below the cabin roof 22 (FIG. 7). Therefore, even when the status indicator lamp 40 is in the stored position, the cabin door 50 can be opened and closed, and there is no hindrance to ascent and descent.

[0035] As described above, the support base bracket 42 is fastened to the indicator light bracket 41 at two points by bolts 43 and nuts 44 so that it can be freely attached and detached. One of these points 43a, 44a can be fastened at any position centered on the other point 43b, 44b along the arc-shaped guide hole 41a formed in the indicator light bracket 41, so that its position can be easily changed by loosening one bolt 43b.

[0036] The support seat brackets are arranged on the left and right, and side cameras 23s, which are one of the surveillance cameras 23, are arranged on the lower outer surfaces of the left and right support seat brackets 42L, 42R via camera brackets 45L, 45R. The side cameras 23s, 23s are provided so that their vertical angles can be freely adjusted relative to the camera brackets 45L, 45R.

[0037] A bracket 46 for a side mirror is provided on the front support 18 of the cabin 16, lower than the indicator light bracket 41 that supports the indicator light 40, and a stay 48 having a side mirror 47 is attached to the front end of this bracket 45 so that it can be freely rotated and adjusted around a vertical axis.

[0038] The status indicator light 40 is set in a relationship in which the upper end of the status indicator light 40 in the upright position is lower than the height of the antenna guard 33, and the entire status indicator light 40 in the upright position is located inside the aircraft body relative to the side mirror 47. With this configuration, when the vehicle body is covered, the load can be distributed between the antenna guard 33 and the side mirror 47, and the load on the status indicator light 40 can be reduced even when the status indicator light 40 is in the upright position during work.

[0039] In addition, the side camera 23s is located inside the vehicle body 1 more than the side mirror 47 fixed to the front pillar 18 of the cabin 16 and lower than the status indicator lamp 40, so that the side camera 23s can be protected by the status indicator lamp 40 and the side mirror 47. [Explanation of symbols]

[0040] 1. Vehicle body 7 Driver's seat 16 Cabin 22 Cabin roof 25 Positioning Unit 33L Antenna guard (protective frame) 33R Antenna guard (protective frame) 40 Status indicator light 41 Indicator light bracket (bracket) 41a Arc guide 42 Support seat bracket (bracket) 43a Bolt 43b Bolt 47 Side Mirror 50 Cabin Door

Claims

1. A cabin (16) surrounding a driver's seat (7) is provided with status indicator lights (40) for indicating the status of a traveling vehicle body (1) via brackets (41, 42) and a cabin door (50) for an operator to enter and exit the cabin (16); The work vehicle is characterized in that the status indicator light (40) is provided near the cabin door (50) so as to be changeable between a working position in which it protrudes above the cabin roof (22) and a stored position in which it is located above the upper end of the cabin door (50), below the cabin roof (22) and to the side of the cabin roof (22) and does not protrude above the cabin roof (22).

2. 2. The work vehicle according to claim 1, wherein a support seat bracket (42) for supporting and fixing a status indicator light (40) is configured to be fastened at two points with bolts (43) to an indicator light bracket (41) fixed to the cabin (16) side, one of the two bolts (43a) is configured to be positionable around the other bolt (43b) along an arc-shaped guide (41a) formed on the indicator light bracket (41), and the status indicator light (40) is capable of being lowered toward the cabin door (50) toward the rear of the vehicle body and is configured to be changed between an upright working position and a lowered storage position.

3. 3. A work vehicle as claimed in claim 1 or 2, further comprising a positioning unit (25) for measuring the position of the vehicle body (1) above the cabin roof (22), a protective frame (33L, 33R) for protecting the positioning unit (25), the upper end of the status indicator light (40) in the working position being lower than the protective frame (33L, 33R), and the status indicator light (40) being located inside the vehicle body (1) relative to side mirrors (47, 47) provided on the cabin (16).

Images