Work vehicle

Abstract

To prevent a hood cover for covering the upper surface of a roof from interfering with components near the roof.SOLUTION: A traveling vehicle body 1 includes a cabin 16 surrounding a driver's seat 7 portion. Hook-locking tools 60R, 60L for lifting the cabin 16 are provided on right and left rear support posts 20R, 20L of the cabin 16. Rear base stays 63R, 63L are formed on the right and left hook-locking tools 60R, 60L, respectively. The cabin 16 includes a roof 22 formed such that a rear part thereof protrudes rearward from the rear support posts 20R, 20L. A rear obstacle sensor 67 is provided at the rear part of the roof 22. A rear pipe frame 51 is provided between the right and left rear base stays 63R, 63L. The rear pipe frame 51 is formed substantially along a rear edge of the roof in plan view and is located above and behind the roof 22. The rear edge is located behind the rear obstacle sensor 67 in plan view.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a work vehicle such as an agricultural tractor, and more particularly to a protective structure for a communication control unit and the like disposed on the upper surface of a cabin roof of the vehicle. [Background technology]

[0002] A work vehicle is known in which a communication control unit is mounted on the roof of the cabin in which the driver sits, a guard is erected to surround the top of the communication control unit, and the communication control unit can be protected by covering it from above (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-196319 A Summary of the Invention [Problem to be solved by the invention]

[0004] With this configuration, the guard member protects the communication control unit and prevents damage to it. However, in recent years, as work vehicles have become more multifunctional, the number of parts mounted on the roof has also increased, and it has become more difficult to cover the roof. There was a risk of unexpected interference. .

[0005] The present invention relates to For parts installed near the roof, To prevent unexpected interference with a hood cover that covers a vehicle to protect it from dust and rainwater. [Means for solving the problem]

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

[0007] The work vehicle according to the present invention comprises: The vehicle body (1) is provided with a cabin (16) surrounding the driver's seat (7). The cabin (16) Left and right rear pillars (20L, 20R) The above Hook fasteners (60L, 60R) for hoisting the cabin (16) are provided, and rear base stays (63L, 63R) are respectively formed on the left and right hook fasteners (60L, 60R), The cabin (16) includes a roof (22) whose rear portion is formed to protrude rearward beyond the rear pillars (20L, 20R), a rear obstacle sensor (67) is provided at the rear of the roof (22), and a rear pipe frame (51) is provided between the left and right rear base stays (63L, 63R), the rear pipe frame (51) is formed so as to substantially follow the rear edge of the roof in a plan view, and is located rearward and above the roof (22), and the rear edge is located rearward of the rear obstacle sensor (67) in a plan view. . Effect of the Invention

[0008] According to the work vehicle of the present invention, it is possible to prevent unexpected interference of the hood cover, which covers the parts provided near the roof to protect them from dust and rainwater, with the parts. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a side view of a tractor according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a perspective view of the cabin of the tractor as viewed from above and in the front. [Figure 4] FIG. 2 is a perspective view of the cabin of the tractor as viewed from below and in front. [Diagram 5] FIG. 2 is a perspective view of the roof of the tractor as viewed from diagonally above the front. [Figure 6] FIG. 2 is a perspective view of the roof of the tractor as viewed from diagonally above and behind. [Figure 7] FIG. 2 is a side view of the front upper part of the cabin of the tractor. [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. [Figure 9] FIG. 2 is a perspective view showing a status indicator light and its support structure on the left side of the vehicle body of the tractor. [Figure 10] FIG. 2 is an oblique view of the positioning unit, communication control unit and supporting structure of the tractor, seen diagonally from the rear. [Figure 11] FIG. 2 is a perspective view of the cabin of the tractor with the pipe frame attached thereto, as viewed from above and in the front direction. [Figure 12] FIG. 2 is a side view of the cabin of the tractor with the pipe frame attached. [Figure 13] FIG. 2 is a plan view of the cabin of the tractor with the pipe frame attached. [Figure 14]FIG. 2 is an exploded perspective view of a front base stay and its surroundings of the tractor. [Figure 15] FIG. 2 is a partially cut-away side view of the rear base stay and its surroundings of the tractor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 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.

[0011] 1 to 11 show 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 speed change device in a transmission case 3, and the rotational power reduced by the speed change device is 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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 38 in a side view of the vehicle body 1.

[0019] In detail, a forward 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 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 ​​that straddles 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] The indicator light bracket 41 is fixed to the front support 16 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 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.

[0027] The status indicator lamp 40 in the stored position is set to be located above the upper end of the cabin door 39 and below the cabin roof 22 (FIG. 7). Therefore, even when the status indicator lamp 40 is in the stored position, the cabin door 39 can be opened and closed, and there is no hindrance to ascent and descent.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] In addition, the side camera 23s is located inside the vehicle body 1 more than the side mirror 47 fixed to the front support 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.

[0033] The configurations of the left and right pipe frames 50L, 50R and the rear pipe frame 51, which are provided to avoid interference with the top sheet covering the entire vehicle body in order to protect the housing 25a that houses the calculation unit etc. of the positioning controller 25, the antenna 26, and the housing 27a that houses the calculation unit etc. of the camera controller 27, and the communication antenna 28 from dust and rainwater, will be described with reference to Figures 12 to 15.

[0034] As described above, the side mirror brackets 46L, 46R are provided on the left and right front pillars 18L, 18R of the cabin 16 to mount the side mirrors 47L, 47R. The mirror stays 48L, 48R are extended from the side mirror brackets 46L, 46L so as to be rotatable around a vertical rotation fulcrum, and the side mirrors 47L, 47R are supported in a suspended manner on the tip ends of the mirror stays 48L, 48R. The front base stays 53L, 53R, which are L-shaped members to which the pipe insertion cylinder 52 is fixed, are fixed to the vertical flat plate portions 46aL, 46aR of the side mirror brackets 46L, 46R. In detail, the vertical flat plate portions 46aL, 46aR are sandwiched and fixed by the inner stays 54 that face the vertical plate portions of the front base stays 53L, 53R. That is, the vertical plate portions of the front base stays 53L, 53R and the opposing inner stay 54 are arranged at a constant interval by tubes 55 and small bolts 56, and the two are fastened in a sandwiched state while passing through the side mirror brackets 46L, 46R by knob bolts 57. A vertically oriented pipe material can be passed through the pipe insertion cylinder 52.

[0035] On the other hand, the left and right rear pillars 20L, 20R of the cabin 16 are provided with hook fasteners 60L, 60R for lifting the cabin 16. The hook fasteners 60L, 60R are configured by forming a notch 60a for fastening a hook (not shown) and welding a flat plate member having a thickness of appropriate strength to the side near the upper end of the rear pillars 20L, 20R in a protruding shape. The left and right hook fasteners 60L, 60R are fixed with rear base stays 63L, 63R, each of which has a pipe insertion cylinder 61 and 62 at two positions, front and rear. That is, the rear base stays 63L, 63R are formed by forming a framework of a plurality of plate members (three in the illustrated example) at an appropriate interval above and below, and the front pipe insertion cylinder 61 is provided by fixing a plate member in a penetrating manner above and below, so that a vertically oriented pipe material can be inserted through the plate member. Similarly, the pipe insertion cylinder 62 provided on the rear side is also configured to allow a vertically oriented pipe to be inserted therethrough.

[0036] The rear base stays 63L, 63R are overlapped with the hook fasteners 60L, 60R and fastened with a knob bolt 64. Reference numeral 65 denotes a positioning pin. The cylinders 61, 62, like the cylinder 52, can pass a vertically oriented pipe material therethrough.

[0037] Left and right pipe frames 50L, 50R having an inverted U shape in side view are attached between the cylinder 52 of the front base stays 53L, 53R and the front pipe insertion cylinder 61 of the rear base stays 63L, 63R. The vertical portions 50a, 50b are inserted from above into the cylinder 52 of the front base stay 53L and the front pipe insertion cylinder 61 of the rear base stays 63L, 63R. Each vertical portion 50a, 50b has a flange 50c, 50d to define the pipe insertion position.

[0038] The rear part of the roof 22 is formed to protrude rearward beyond the rear support pillar 20 to improve the design and to form a space for mounting an air conditioning unit. A rear monitoring camera 23r is mounted on the underside of the rear end protruding part 22a of the roof 22 by a camera bracket 65 so that the downward angle can be adjusted backward, and a rear obstacle sensor 67 is mounted using a sensor bracket 66. The rear surface of the rear obstacle sensor 67 is surrounded by the license plate mounting seat plate 68. The obstacle sensor 67 is configured to be located above the rear obstacle sensor 67 and the rear monitoring camera 23r, so that it can be positioned without interfering with the imaging by the monitoring camera 23r.

[0039] The rear pipe frame 51 is formed so as to be approximately along the rear edge of the roof in a plan view, and is positioned at the rear and upper part of the roof 22 in a state in which it is inserted into the cylinders 62 provided on the rear side of the left and right rear base stays 63L, 63R, and its rear edge is positioned rearward of the rear obstacle sensor 67 in a plan view. Furthermore, the rear pipe frame 51 is provided in an inclined posture (angle α in FIG. 12) so that it is higher toward the rear in a side view. Therefore, the rear pipe frame 51 can protect the rear obstacle sensor 67 and the rear monitoring camera 23r. In addition, the left and right vertical parts 51a of the pipe frame 51 are inserted and fixed into the rear pipe insertion cylinders 62L, 62R of the rear base stays 63L, 63R from above, and the rear pipe frame 51 is provided with an upward inclination at the rear, so that the rear obstacle sensor 67 and the rear monitoring camera 23r can be protected even in a state in which the top cover is hung and the rear pipe sensor 67 and the rear monitoring camera 23r are in a bent state. The vertical portion 51a has a flange portion 51b for positioning the pipe insertion.

[0040] Cotter pin insertion holes 50e, 51e are provided at the lower ends of the vertical portions 50a, 50b, and 51a of the left and right pipe frames 50L, 50R and the rear pipe frame 51. With this configuration, accidental removal of the cotter pin can be prevented by inserting the cotter pin.

[0041] In the above embodiment, the positioning controller 25 or the camera controller 27 is used as an example of a communication control unit, but the present invention can be applied to any control unit disposed on the upper surface of the roof 22. [Explanation of symbols]

[0042] 1 Running vehicle 7 Driver's seat 16 Cabin 18 Front post 20 Rear strut 40 Status indicator light 41 Indicator light bracket 46 Side mirror bracket 47 Side Mirror 50 Left and right pipe frames 51 Rear pipe frame 53 Front base stay 60 Hook fastener 63 Rear base stay 67 Rear Obstacle Sensor

Claims

1. The vehicle body (1) is provided with a cabin (16) surrounding a driver's seat (7), Hook fasteners (60L, 60R) for lifting the cabin (16) are provided on the left and right rear struts (20L, 20R) of the cabin (16), The left and right hook fasteners (60L, 60R) are each provided with a rear base stay (63L, 63R), The cabin (16) includes a roof (22) formed so that a rear portion of the roof protrudes rearward beyond the rear pillars (20L, 20R), A rear obstacle sensor (67) is provided at the rear of the roof (22); A rear pipe frame (51) is provided between the left and right rear base stays (63L, 63R), The rear pipe frame (51) is formed so as to roughly follow the rear edge of the roof in a plan view, is located rearward and above the roof (22), and the rear edge is located rearward of the rear obstacle sensor (67) in a plan view.

2. A work vehicle as described in claim 1, wherein the rear pipe frame (51) has its U-shaped ends fixed to the left and right rear base stays (63L, 63R) and is inclined so that the higher it is, the further rearward it is, when viewed from the side.

3. A work vehicle as described in claim 2, wherein the rear base stays (63L, 63R) are attached by inserting the U-shaped end of the rear pipe frame (51) into a pipe insertion cylinder (62) that is provided by fixing a plurality of plate members above and below at an appropriate interval to form a framework and penetrating the plate members from above and below.

4. A status indicator light (40) for indicating the status of the vehicle body (1) running through an indicator light bracket (41) is provided in the cabin (16), The status indicator lamp (40) is provided so as to be changeable between a working position in which it protrudes above the roof (22) and a storage position in which it does not protrude above the cabin roof (22), Side mirror brackets (46L, 46R) for mounting side mirrors (47L, 47R) are provided on left and right front pillars (18L, 18R) of the cabin (16); The left and right side mirror brackets (46L, 46R) are provided with front base stays (53L, 53R), The rear base stays (63L, 63R) each include a rear pipe insertion cylinder (62) and a front pipe insertion cylinder (61), A left and right pipe frame (50L, 50R) is provided between the front base stay (53L, 53R) and the front pipe insertion cylinder (61).

4. The work vehicle according to claim 3, wherein the left and right pipe frames (50L, 50R) are arranged to be higher than an upper surface of the roof (22) of the cabin (16) and positioned outside a status indicator light (40) for the lying-down storage position.

Images