Work vehicle

Abstract

To provide a work vehicle that is configured so that a control unit member on an upper surface of a roof can be easily detached and attached.SOLUTION: A bracket 31 for a control unit is provided at a central part in a lateral direction at a front upper side of a roof 22 of a cabin 16 surrounding a driver's seat 7. A positioning controller unit 25 that receives a signal from a positioning satellite is provided on the bracket 31 for a control unit. Harnesses 34 connecting the positioning controller 25 to a control part C in the cabin 16 are arranged along an upper frame 21 on a front surface of the cabin 16 and arranged to bypass from the upper frame 21 on the front surface to an upper frame 21 on a side surface. The harnesses when reaching a rear part support pillar 20 are arranged along the rear support pillar 20 in the cabin 16.SELECTED DRAWING: Figure 4

Description

Technical Field

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

Background Art

[0002] A work vehicle is known that is equipped with a positioning device and a communication device on the roof and has a harness arranged inside a cover provided on the upper surface of the roof (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the configuration disclosed in Patent Document 1, the positioning device is at the highest position, which is convenient, but since it protrudes higher than the roof, it had to be removed during transportation, and the detachment and attachment work was complicated.

[0005] In view of the above, an object of the present invention is to provide a work vehicle in which the control unit member on the upper surface of the roof can be easily detached and attached.

Means for Solving the Problems

[0006] To solve the above problems, the present invention has taken the following technical means.

[0007] According to the invention described in claim 1, a bracket 31 for a control unit is provided at the left and right center of the front upper part of the roof 22 of the cabin 16 surrounding the driver's seat 7. A positioning controller unit 25 for receiving signals from positioning satellites is provided on the bracket 31 for the control unit. The harness 34 connecting the positioning controller 25 and the control unit C inside the cabin 16 is arranged along the upper frame 21 of the front surface of the cabin 16, is arranged to detour from the upper frame 21 of the front surface to the upper frame 21 of the side surface, and further, when reaching the rear pillar 20, is arranged inside the cabin 16 along the rear pillar 20.

[0008] According to the invention described in claim 2, in the invention described in claim 1, a bracket 31 for a control unit is provided on the upper surface of the roof 22. On the bracket 31 for the control unit, the positioning controller 25 and a camera controller 27 having an arithmetic unit for arithmetic processing of imaging data of the monitoring camera 23 and a transmission circuit for transmitting the arithmetic result are arranged one behind the other. The harness 34 connected to the positioning controller 25 and the camera controller 27 is arranged below the bracket 31 for the control unit.

[0009] According to the invention described in claim 3, in the invention described in claim 2, a front bracket 30 is provided across the central part of the upper frame 21 between the left and right front pillars 18 of the cabin 16 and the upper surface of the roof 22. The front end side of the bracket 31 for the control unit is fixed to the front bracket 30. The harness 34 is arranged to pass through the hole 30a formed in the front bracket 30 and reach the front surface of the cabin 16 from the upper surface of the roof 22.

Advantages of the Invention

[0010] According to the invention described in claim 1, since the positioning controller 25 at the front of the roof 22 is arranged from the front of the roof 22 through the front of the roof 22 to below the roof 22, the arrangement on the upper surface of the roof 22 is minimized, and the members on the upper surface of the roof 22 can be easily detached and attached. Further, since the harness 34 is arranged from under the eaves of the roof 22 through the side surface to the rear, the harness 34 can be protected from rain and sunlight.

[0011] According to the invention described in claim 2, in addition to the effects described in claim 1, by attaching the positioning controller 25 and the camera controller 27 to the bracket 31 for the control unit, both controllers can be easily detached and attached. By arranging the harness 34 below the bracket 31 for the control unit, the harness 34 on the upper surface of the roof 22 can also be protected.

[0012] According to the invention described in claim 3, in addition to the effects described in claim 2, the harness 34 is hidden behind the front bracket 30, and the harness 34 can be arranged without impairing the appearance.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0015] Figures 1 to 5 show a tractor. A diesel engine E is mounted inside the bonnet 2 at the front of the traveling body 1. The rotational power of this engine E is transmitted to a transmission in the transmission case 3, and the rotational power decelerated by this transmission is transmitted to the front wheels 4 and the rear wheels 5. A steering wheel 6 for steering the front wheels 4 is equipped behind the engine E, and further, a driver's seat 7 is installed behind it. An hydraulic cylinder case 8 is provided at the rear upper part of the transmission case 3, and lift arms 9 constituting a part of the hydraulic lifting mechanism are rotatably attached to both the left and right sides of this cylinder case 8. The lift arm 9 moves up and down by the telescopic operation of the hydraulic cylinder 10 for lifting. At the rear part of the vehicle body, a three-point link mechanism composed of a top link 11 and left and right lower links 12 is provided, a rotary working machine R is attached to the link mechanism, and by connecting the lower link 12 to the lift arm 9 via a lift rod 13, the working machine R is configured to be able to move up and down.

[0016] 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 anti-vibration rubber, making it difficult for the vibration of the vehicle body to be transmitted to the cabin 16.

[0017] The cabin 16 has a frame structure integrated by a floor 17, front struts 18 erected at the left and right front parts of the floor 17, rear struts 20 erected at the left and right of the rear part of the driver's seat 7, intermediate struts 62 erected at the middle parts of the left and right fenders 19, and an upper frame 21 connecting the upper ends of these struts, and is covered by a roof 22.

[0018] The roof 22 of the cabin 16 is equipped with devices related to driving support such as a monitoring camera, an obstacle sensor, a positioning controller, and a camera controller. The following details the mounting configurations of these devices. The monitoring camera 23 captures images of the front, rear, and sides of the tractor body to obtain imaging data. The positioning controller 25, which serves as a positioning unit, calculates information for determining the position of the vehicle body and transmits the imaging information to the control unit C installed in the vehicle body 1 via the camera controller 27, which functions as a communication control unit for communicating with a communication terminal. The obstacle sensor 24 is, for example, an infrared sensor and can detect obstacles in front of and behind the vehicle body. In this embodiment, the camera controller 27 is cited as an example of the communication control unit, but it may be replaced with a controller that calculates and controls the sensor information of each part of the vehicle body 1.

[0019] The positioning controller 25 includes a positioning antenna (not shown), a base station (not shown) information receiving antenna (not shown), a calculation unit (not shown), and an output unit (not shown). The positioning antenna acquires satellite signals from GPS satellites and other sources, and the calculation unit processes the satellite signals and the correction signals received from the base station by the antenna to calculate the position information and traveling direction of the vehicle body. These position information and the like are transmitted to the control unit C by the output unit.

[0020] The camera controller 27 includes a calculation unit that calculates and processes the imaging data of the monitoring camera 23, a transmission circuit (not shown) that transmits the calculation result, and a plurality (two in the illustrated example) of communication antennas 28. The calculation result of the imaging data is transmitted to the control unit C installed in the vehicle body 1.

[0021] The position information, imaging data, and the like transmitted to the control unit C can be configured to be transmitted to a management server (not shown). By providing a communication terminal (e.g., a mobile terminal) that can communicate with this management server, it is possible to obtain information about the vehicle body 1 with this communication terminal to check the vehicle body state, or to remotely control the vehicle body 1.

[0022] The housing 27a that houses the camera controller 27 and the housing 25a that houses the arithmetic unit etc. of the positioning controller 25 are arranged above the front side of the roof 22.

[0023] That is, a front bracket 30 is fixed across the central part of the upper frame 21 between the left and right front pillars 18 of the cabin 16 and the upper surface of the roof 22. The front end is fixed to the upper surface of this front bracket 30 and the rear end is fixed to the upper surface of the roof 22 to provide a bracket 31 for the control unit. On the upper surface of this bracket 31 for the control unit, the housing 27a of the camera controller is arranged and fixed at the rear position, and the housing 25a of the positioning controller 25 is arranged and fixed at the front position in the front-rear direction.

[0024] The bracket 31 for the control unit is formed with a front inclined portion 31a, horizontal housing installation portions 31b and 31c in the front and rear, etc. Bent portions 31d and 31e are formed at the left and right portions of the housing installation portions 31b and 31c to maintain an appropriate distance from the upper surface of the roof 22. Then, two points at the tip of the inclined portion 31a are detachably bolted 32a, 32a to the upper surface of the front bracket 30, and two points are detachably bolted 32b, 32b to the roof 22 or a bracket member installed on the roof 22 at the interval between the front housing installation portion 31b and the rear housing installation portion 31c. Left and right gripping portions 33, 33 are provided so as to connect the front and rear housing installation portions 31b, 31c. Therefore, when detaching and attaching the bracket 31 for the control unit from the front of the cabin 16, the positions of the bolts 32b, 32b on the back side are relatively easy to reach and the work becomes easy. In addition, the gripping portions 33, 33 are configured to facilitate handling during the detaching and attaching work.

[0025] Next, the layout configuration among the positioning controller 25, the camera controller 27, and a control box (not shown) installed near the driver's seat 7 inside the cabin 16 will be described. Note that the control unit C that controls all aspects of vehicle body control is built into this control box. The harness 34c extending from the housing 27a of the camera controller 27 is routed along one side (the side of the bent portion 31d in the illustrated example) of the space formed by the bent portions 31d and 31e of the control unit bracket 31 and reaches forward. On the other hand, the harness 34g extending from the housing 25a of the positioning controller 25 is bundled together with the harness 27b and reaches forward along the bent portion 31d of the control unit bracket 31. The merged harnesses 34c and 34g (hereinafter, harness 34) pass below the inclined portion 31a, pass through the hole 30a formed on the upper surface side of the front bracket 30, and are routed along the upper frame 21 of the front of the cabin 16, which corresponds to the eaves portion of the roof 22 of the cabin 16. By bundling the harnesses together, the labor can be reduced when removing the housings 25a and 27a from the roof 22, and the labor for routing during installation can be decreased.

[0026] On the front side of the cabin 16, a front support stay 35f is provided along the upper frame 21 on the front side of the cabin 16, and is routed along the outer surface of the upper frame 21 and the inner side of the front support stay 35 and is appropriately clamped and fixed. The front support stay 35f is arranged at the lateral interval between the work lights 36 arranged on the upper frame 21 of the front and is appropriately fixed to this upper frame 21. The front support stay 35f is positioned above the upper end of the front windshield 37f so as not to obstruct the operator's view.

[0027] The harness 34 is routed to bypass from the upper frame 21 of the front to the upper frame 21 of the side, and is appropriately clamped and fixed to the side support stay 35s provided on the upper frame 21 so as to pass through the upper part of the door 38 and the upper part of the side glass 39, which correspond to the eaves portion of the roof 22. The side support stay 35s is positioned above the upper end of the door 38 and above the upper end of the side glass 37s so as not to obstruct the operator's view.

[0028] Furthermore, the harness 34 extends downward inside the cabin 16 along the rear pillar 20 and is routed into a control box disposed at an appropriate position inside the cabin 16.

[0029] By installing the harness 34 and its related components at a position that does not block the operator's view as in this embodiment, the comfort and safety during driving can be enhanced. Also, by not interfering with the opening and closing of doors or the like, the comfort of the user can be improved. In addition, an accompanying effect of protecting the components can be expected.

[0030] It should be noted that the positioning controller 25 as the positioning unit and the camera controller 27 as the communication control unit can also be arranged with their positions swapped front and back.

[0031] The front bracket 30 supports a front monitoring camera 23f that images the front into the field of view and functions as a bracket for the camera.

[0032] Next, when the traveling vehicle body 1 is configured to be capable of autonomous driving, the installation configuration of a status indicator lamp 40 for displaying the situation during this autonomous driving will be described. The status indicator lamp 40 is configured to be able to light up different warning colors in a stacked manner, and the situation of the vehicle body 1 during autonomous driving can be distinguished and displayed by various lighting methods. For example, during normal operation driving, it lights up green, when there is an abnormality, it lights up red, when an obstacle is detected, it lights up yellow, and it blinks when the aircraft stops. It is arranged on the left and right fronts of the cabin 16. That is, a support seat bracket 42 is fixed to a display lamp bracket 41 on the front pillar 18 of the cabin 16, and the above-mentioned status indicator lamp 40 is fixedly provided in an upright state on this support seat bracket 42. And the status indicator lamp 40 fixed to the support seat plate 42 is arranged to be located on the opposite side across the front pillar 18 with respect to the head position of the operator sitting on the driver's seat 7. During normal driving by various operations of the operator, the indicator lamp 40 does not obstruct the operator's field of view.

[0033] The support brackets are arranged on the left and right, and side cameras 23s, 23s, which are one of the surveillance cameras 23, are arranged on the outer lower surfaces of the left and right support brackets 42L, 42R via camera brackets 45L, 45R. The side cameras 23s, 23s are provided on the camera brackets 45L, 45R so that their vertical angles can be adjusted freely.

[0034] The harness 50 for transmitting the imaging data of the front surveillance camera 23f of the surveillance camera bracket 30 is connected to the camera controller 27 along the harness 34. And the harnesses 51 for transmitting the imaging data of the side surveillance cameras 23s, 23s of the camera brackets 45L, 45R extend toward the center along the front upper frame 21 and merge with the harness 50, and are connected to the camera controller 27 along the harness 34.

[0035] In the front pillar 18 of the cabin 16, a side mirror bracket 46 is provided near 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 as to be rotatable around a vertical axis.

Explanation of Signs

[0036] 7 Driver's seat 16 Cabin 18 Front pillar 20 Rear pillar 21 Upper frame 22 Roof 23 Surveillance camera 25 Positioning controller 27 Camera controller 30 Front bracket 30a Hole part 31 Bracket for control unit 34 Harness C Control unit

Claims

1. A control unit bracket (31) is provided at the left and right center of the front upper part of the roof (22) of the cabin (16) surrounding the driver's seat (7). A positioning controller unit (25) for receiving signals from positioning satellites is provided on the control unit bracket (31). A harness (34) connecting the positioning controller (25) and the control unit (C) inside the cabin (16) is routed along the upper frame (21) on the front surface of the cabin (16), routed so as to detour from the front upper frame (21) to the side upper frame (21), and further routed into the cabin (16) along the rear pillar (20) when reaching the rear pillar (20). The work vehicle is characterized by this.

2. A control unit bracket (31) is provided on the upper surface of the roof (22). On the control unit bracket (31), the positioning controller (25) and a camera controller (27) having an arithmetic unit for arithmetic processing of imaging data of the monitoring camera (23) and a transmission circuit for transmitting the arithmetic result are arranged one behind the other. The work vehicle according to claim 1, wherein a harness (34) connected to the positioning controller (25) and the camera controller (27) is routed below the control unit bracket (31).

3. A front bracket (30) is provided across the central part of the upper frame (21) between the left and right front pillars (18) of the cabin (16) and the upper surface of the roof (22). The front end side of the control unit bracket (31) is fixed to the front bracket (30). The work vehicle according to claim 2, wherein the harness (34) is routed to pass through a hole (30a) formed in the front bracket (30) and reach the front surface of the cabin (16) from the upper surface of the roof (22).

Images