JP7322517B2 - work vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a work vehicle such as an agricultural tractor, and more particularly to a protection structure for a communication control unit arranged on the upper surface of a cabin roof of the vehicle.

There is a configuration in which a camera for imaging the rear of a traveling vehicle and an infrared sensor for measuring the distance to an obstacle imaged by the camera are housed in a housing and provided at the rear of the roof of the traveling vehicle (Patent Document 1).
In addition, there is a configuration in which a positioning detection device is provided at the rear of the upper surface of the roof of the tractor as a traveling vehicle for detecting the position information of the vehicle body by acquiring satellite signals from GPS satellites or the like and correction information from the satellite positioning device of the base station. (Patent Document 2).

JP-A-10-147178 Japanese Patent Application Laid-Open No. 2018-105708

By the way, in the configuration disclosed in Patent Document 1, a housing containing a camera and an infrared sensor is placed on the roof. There is a risk of being caught and damaged. In addition, the positioning detection device disclosed in Patent Document 2 is also arranged on the roof, so there is a risk of damage as well.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to protect a communication control unit provided on the top surface of a roof.

In order to solve the above problems, the present invention has taken the following technical measures.

A first aspect of the present invention comprises a roof (22) of a cabin (16) surrounding a driver's seat (7), communication control units (25, 27) provided on the upper surface of the roof (22), and the communication control unit ( 25, 27) are provided with guard members (46, 50) formed in an inverted U shape (46a),
The communication control units (25, 27) have antennas (26, 28) that protrude upward from housings (25a, 27a) that house the communication control units (25, 27),
The upper part of the guard member (46, 50) is provided at a position higher than the height of the antenna (26, 28), and the lower part is provided with a fitting part (46b) that is fitted and attached to the elastic support metal fitting (48),
The guard member (46) includes a fitting pipe portion (46b) provided as the fitting portion (46b) by bending outward from the lower portion of the left and right leg portions of the inverted U shape, and the fitting pipe portion (46b). a grip portion (46c) bent from the portion (46b);
A left-right mounting stay (45) supported in a horizontal position is provided.
The elastic support metal fitting (48) includes a mounting seat plate portion (48a) attached to an intermediate fixing bracket (47) provided on the mounting stay (45), and an elastic member that receives the fitting pipe portion (46b). a receiving portion (48b);
The tip of the grip portion (46c) of the guard member (46) abuts the roof (22), and the extended tip of the intermediate fixing bracket (47) is the inverted U-shaped portion of the guard member (46). It is a work vehicle that abuts on the left and right legs.
A second aspect of the present invention comprises a roof (22) of a cabin (16) surrounding a driver's seat (7), communication control units (25, 27) provided on the upper surface of the roof (22), and the communication control unit ( 25, 27) are provided with guard members (46, 50) formed in an inverted U shape (46a),
The communication control units (25, 27) have antennas (26, 28) that protrude upward from housings (25a, 27a) that house the communication control units (25, 27),
The upper part of the guard member (46, 50) is provided at a position higher than the height of the antenna (26, 28), and the lower part is provided with a fitting part (46b) that is fitted and attached to the elastic support metal fitting (48),
The left and right fixed arms (29L, 29R) supporting the communication control unit (27) are fixed to hanging metal fittings (31L, 31R) fixed to the rear strut (20) of the cabin (16). The left and right monitoring cameras (23L, 23R) are fixed via right fixing arms (29L, 29R), and the side surfaces of the left and right monitoring cameras (23L, 23R) are attached to the hanging metal fittings (31L, 31R). and a work vehicle provided with camera guards (43L, 43R) so as to cover the rear surface.
A first invention related to the present invention includes a roof 22 of a cabin 16 surrounding a driver's seat 7, communication control units 25 and 27 provided on the upper surface of the roof 22, and guard members 46 and 46 surrounding the communication control units 25 and 27. 50 is provided.

In a second invention related to the present invention, in the first invention related to the present invention, the communication control units 25, 27 have antennas 26, 28, and the guard members 46, 50 are higher than the antennas 26, 28. Place it in a high position.

A third invention related to the present invention is, in the first or second invention related to the present invention, the left and right monitoring cameras via left and right fixed arms 29L, 29R supporting the communication control unit 27. 23L and 23R are fixed.

According to the present invention, there is an effect of protecting the communication control units 25 and 27 and preventing damage.
According to the first invention related to the present invention, the guard members 46 and 50 protect the communication control units 25 and 27 and have the effect of preventing damage.

According to the second invention related to the present invention, in addition to the effects of the first invention related to the present invention, since the guard members 46, 50 are higher than the antennas 26, 28, the antenna is easily damaged by a collision. 26, 28 can be protected.

According to the third invention related to the present invention, in addition to the effects of the first or second invention related to the present invention, the left and right monitoring cameras 23L and 23R, which are side monitoring cameras, can be mounted stably.

1 is a side view of a tractor; FIG. It is the perspective view which looked at the cabin and the fender from the front upper part. It is the perspective view which looked at the roof from back upper direction. It is a perspective view of the roof front. It is the perspective view which looked at the cabin from the back downward direction. It is a perspective view of the roof rear. It is the perspective view which looked at the fender from the back. (A) A side view showing an indicator lamp and its support structure, (B) a plan view thereof, (C) a rear view thereof, and (D) a front view thereof. 3A and 3B are perspective views of a monitor support arrangement; FIG.

EMBODIMENT OF THE INVENTION Below, embodiment which concerns on this invention is described in detail based on drawing.

FIG. 1 shows a tractor. A diesel engine E is mounted inside a bonnet 2 in the front part of the traveling vehicle body 1, and the rotational power of the engine E is transmitted to a transmission in the transmission case 3. The decelerated rotational power is transmitted to the front wheels 4 and the rear wheels 5. - 特許庁A steering handle 6 for steering the front wheels 4 is provided behind the engine E, and a driver's seat 7 is installed behind it. A hydraulic cylinder case 8 is provided in the rear upper portion of the transmission case 3, and lift arms 9 constituting part of a hydraulic lifting mechanism are rotatably attached to both left and right sides of the cylinder case 8. As shown in FIG. The lift arm 9 moves up and down by extending and retracting hydraulic cylinders 10 for elevating. 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. By doing so, the work machine R is configured to be able to move up and down.

The steering wheel 6, the driver's seat 7 and the like are covered with a cabin 16. - 特許庁The cabin 16 is fixed to the vehicle body via an elastic member such as vibration-proof rubber, for example, so that the vibration of the vehicle body is less likely to be transmitted to the cabin 16 .

The cabin 16 includes a floor 17, front struts 18 erected on the left and right front portions of the floor 17, rear struts 20 erected on the left and right rear portions of the driver's seat 7, and intermediate struts 62 erected on the middle portions of the left and right fenders 19. and an upper frame 21 connecting the upper ends of these columns to form an integrated frame structure, which is covered with a roof 22. - 特許庁

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. These mounting configurations will be described in detail below. A monitoring camera 23 captures images of the front, rear, and sides of the tractor body to acquire image data, and a positioning controller 25, which will be described later as a communication control unit, receives information for calculating the position of the vehicle body, also as a communication control unit. The camera controller 27 is configured to transmit image information to a control unit C equipped on the vehicle body 1 . The obstacle sensor 24 is, for example, an infrared sensor, and can detect obstacles in front of and behind the vehicle body.

The positioning controller 25 includes a positioning antenna (not shown), a base station (not shown) information receiving antenna 26, a computing section (not shown), and an output section (not shown). A satellite signal is acquired from a radio station, etc., and a calculation unit processes the satellite signal and a correction signal from the base station received by the antenna 26 to calculate vehicle position information, running direction, and the like. These positional information and the like are transmitted to the control section C from the output section. A forward monitoring camera 23 f is provided in front and downward of the positioning controller 25 .

A housing 25 a in which a calculation unit and the like of the positioning controller 25 are housed is arranged above the front portion of the roof 22 . That is, a pipe-shaped or round-bar-shaped mounting stay 45 is provided so as to bridge between bracket members 45aL and 45aR appropriately connected to brackets 44aL and 44aR on which the left and right rear mirrors 44L and 44R are mounted, and is horizontally supported. A housing 25 a of the positioning controller 25 is fixedly supported in the left and right middle portions of the mounting stay 45 . The housing 25a may be directly attached to the roof 22, or may be supported by both the mounting stay 45 and the roof 22. As shown in FIG.

The mounting stay 45 is provided with a guard member 46 for protecting the housing 25a and the antenna 26 erected upward from the housing 25a. Fitting pipe portions 46b, which are bent outward to the left and right to be fitted to the elastic support fittings 48, are attached to the left and right lower portions of the guard member 46 formed by forming a pipe material into an inverted U shape 46a, and the fitting pipe portions 46b are bent forward. A curved grip portion 46c is provided. The elastic support metal fitting 48 has a seat plate portion 48a for mounting the mounting stay 45 on the intermediate fixing bracket 47, and an elastic receiving portion 48b. When the fitting pipe portion 46b of the guard member 46 is fitted and held by the elastic support fitting 48, the inverted U-shape 46a, which is the main body of the guard member 46, is slightly wider than the lateral width of the housing 25a of the positioning controller 25. In addition, the housing 25a and the antenna 26 can be guarded by being positioned slightly higher than the antenna 26.例文帳に追加In a side view, the guard member 46 is located at the same position as or slightly behind the antenna 26, so that the antenna 26 can be guarded when the hood member covering the vehicle body to protect it from wind and rain is put on or removed. , there is little risk of damage due to unexpected interference. Since the guard member 46 is detachable from the elastic support metal fitting 48, it is attached during transportation to guard the antenna 26. However, the guard member 46 must be removed when working with the tractor in the field. can also When mounted, it can rotate back and forth about the fitting portion to the elastic support metal fitting 48, but backward rotation can be prevented by contacting the tip of the grip portion 46c with the roof 22, and forward rotation can be prevented between the above intermediate positions. It can be prevented by coming into contact with the extended tip of the fixing bracket 47 .

The camera controller 27 includes an arithmetic unit that performs arithmetic processing on the imaging data of the surveillance camera 23, a transmission circuit (not shown) that transmits the arithmetic result, and a plurality of (two in the figure) communication antennas 28. .

A housing 27a containing the camera controller 27 is attached to the cabin 16 by left and right fixed arms 29L and 29R and a rear fixed arm 30 so as to be arranged above the rear side of the roof 22. As shown in FIG. The left fixed arm 29L integrally connects the arm portion 29aL and the bracket portion 29bL. Among them, the arm portion 29aL has a curved portion along the upper surface of the roof 22, and the tip side thereof is connected to the lower portion of the housing 27a. Thus, the bracket portion 29bL is detachably connected to the hanging metal fitting 31 provided in the cabin 16. As shown in FIG. The right fixed arm 29R has a similar structure, and is formed by connecting an arm portion 29aR and a bracket portion 29bR.

The rear fixed arm 30 is composed of a pair of left and right arm portions 30L and 30R separated by a predetermined distance along the upper surface of the roof 22. It is fixed via a fixing bracket 32 . The rear end portions of the arm portions 30L and 30R are fixed by means of welding or the like as a common seat plate portion on one wall surface of a connecting seat plate 33 which is bent into an L-shape when viewed from the side. Connected state. Further, the other wall surface of the connecting seat plate 33 is detachably fixed to a fixing bracket 34 fixed to the lower surface of the roof 22 in a superimposed state. Furthermore, the pair of left and right arm portions 30L, 30R of the pair of left and right rear fixed arms 30 are integrally formed with branched arm portions 30aL, 30aR branched near their rear end portions. The distal end sides of these branch arm portions 30aL and 30aR are connected by a seat plate 35 for attaching a license plate.

As described above, the housing 27a of the camera controller 27 can be attached to the cabin 16 in a state separated from the top surface of the roof 22 by the left and right fixed arms 29L, 29R and the rear fixed arm 30. It can operate stably without being subject to excessive vibration.

The rear part of the roof 22 is formed so as to protrude rearward from the rear strut 20 to improve the design, and forms a space for installing an air conditioner unit. A rear monitoring camera 23r is attached to the lower surface of the rear end overhanging portion 22a of the roof 22 using the connecting seat plate 33 of the rear fixing arm 30, and branch arm portions 30aL and 30aR are used to detect rear obstacles. Attach the sensor 24r.

That is, a camera bracket 36 having an angle adjustment slot formed in the center of the other wall portion of the connecting seat plate 33 is detachably provided, and the rear monitoring camera 23r is fastened to the camera bracket 36 so that the downward angle can be adjusted toward the rear. It is configured to be fixed. On the other hand, the rear obstacle sensor 24r is fixed to a sensor bracket 37 provided so as to connect the left and right branch arm portions 30aL and 30aR. Although it is mounted downward, it is provided so that it can be finely adjusted in the front-rear direction by forming an elongated hole (not shown). The rear surface of the rear obstacle sensor 24r is surrounded by the seat plate 35 for attaching the license plate.

The rear obstacle sensor 24r is configured to be positioned above the rear monitoring camera 23r, and the obstacle sensor 24r can be arranged without interfering with imaging by the monitoring camera 23r.

A connection structure of the left and right fixed arms 29L, 29R to the cabin 16 will be described. Herein, the symbols L and R denote the left side and the right side, respectively, but since the left and right fixed arms are configured to be shared between the left and right sides, the left side L will be representatively described below. The left fixed arm 29L integrally connects the arm portion 29aL and the bracket portion 29bL. Of these, the bracket portion 29bL is formed by bending a sheet metal material into an L-shaped cross section and bending a short side portion on one side and welding the edges. The sling fitting 31L fixed to the rear strut 20 is detachably fixed at a position near the rear strut 20. As shown in FIG. The arm portion 29aL is connected and fixed to the upper surface of the bracket portion 29bL by means of welding or the like. A camera bracket 42L having a long hole for angle adjustment is detachably provided on the lower surface of the bracket portion 29bL. The camera bracket 42L is provided with a left surveillance camera 23L which can be directed sideways and whose downward angle can be adjusted. The situation on the left side of the vehicle can be imaged by the left monitoring camera 23L. A camera guard 43L is provided on the hanging metal fitting 31L so as to cover the side surface and the rear surface of the left monitoring camera 23L. By providing the camera guard 43L in this way, it is possible to prevent damage to the monitoring camera 23L even if an accidental contact with a tree or the like occurs. The antenna can be appropriately guarded by

A guard member 50 is provided on the roof 22 or the left and right fixed arms 29L, 29R to protect the communication antenna 28, which is erected to protrude upward from a housing 27a housing the computing unit of the camera controller 27. It is detachably fitted to the support metal fitting 51 and has the same shape and mounting configuration as the guard member 46 that protects the antenna 26 of the positioning controller 25 . That is, a plurality of (two) communication antennas 28 are arranged on the left and right, and the inverted U-shape 50a of the guard member 50 is arranged so as to be positioned behind these communication antennas 28 in a side view, and when the hood member is covered or The communication antenna 28 can be guarded when it is removed, and there is little fear of accidental interference and damage.

At the left and right lower portions of the guard member 50, a fitting pipe portion 50b that is bent outward to the left and right to be fitted to the elastic support fitting 51, and a grip portion 50c that is bent rearward from the fitting pipe portion 50b are provided. The elastic support metal fitting 51 includes a mounting seat plate portion 51a and an elastic receiving portion 51b. The U-shape 50a can guard the housing 27a and the antenna 28 in a state where it is positioned slightly wider than the lateral width of the housing 27a of the obstacle detection device 27 and slightly higher than the antenna 28 . In addition, when viewed from the side, the guard member 50 is located at the same position as the antenna 28 or slightly forward, so that the antenna 28 can be guarded when the hood member is put on or removed. Regarding the rotation regulation structure when mounted, forward rotation can be prevented by abutment of the grip portion 50c of the guard member 50 against the roof 22, and backward rotation can be prevented by stoppers provided on the left and right fixed arms 29L and 29R. It can be prevented by abutting against 49L and 49R.

Necessary communication cables are routed along the left and right fixed arms 29L, 29R and the rear fixed arm 30, and are further covered with protective covers 38L, 38R, 39. As shown in FIG.

In the above embodiment, the positioning controller 25 or the camera controller 27 is used as an example of the communication control unit.

Next, the structure for supporting the status indicator lamps 52 formed on the upper surface of the fender 19 and the mounting structure for the ultrasonic sensors 53 as monitoring sensors for monitoring the presence or absence of obstacles on the left and right sides of the aircraft will be described. Indicator lights 52L and 52R are fixed to the upper surfaces of the left and right fenders 19L and 19R via light brackets 54L and 54R. Curved support arms 56L, 56R shaped along the outer edge portions extending upward from the inclined front portions of the fenders 19L, 19R are connected to the fenders 19L, 19R via a plurality of connecting pieces 57 . Ultrasonic sensors 53fL, 53rL and 53fR, 53rR are attached to the front and rear ends of the curved support arms 56L, 56R, and light brackets 54L, 54R are connected to the intermediate portions thereof. The bottoms of the indicator lamps 52L, 52R are connected and supported to the upper support seats 54aL, 54aR of the light brackets 54L, 54R connected to the intermediate portion. Side covers 57L, 57R having design value are connected to the outside of the curved support arms 56L, 56R at three points, front, back, and intermediate. The side covers 57L and 57R are provided with openings corresponding to the ultrasonic sensors 53f and 53r, and intermediate portions are formed with bulging portions having through holes for the light brackets 54L and 54R. The ultrasonic sensors 53fL, 53rL and 53fR, 53rR are arranged on the left and right curved support arms 56L, 56R, respectively. can be detected. The indicator lamps 52L and 52R are laminated and configured to light up in different warning colors. Various lighting methods can be used to indicate the status of the tractor during autonomous travel. It is configured so that it can be distinguished by lighting yellow when an object is detected and blinking when the aircraft is stopped.

The indicator lights 52L, 52R are arranged near the hinge portions 61 of the doors 60L, 60R provided between the front support 18 and the intermediate support 62 of the cabin 16 when viewed from the side. Further, the light brackets 54L, 54R and their support are positioned so as to be separated from the intermediate struts 62L, 62R as far as possible at positions overlapping or slightly behind the intermediate struts 62L, 62R as connection targets of the hinge portion 61. A seat 54a is arranged. The opening/closing windows 63L, 63R located on the rear side of the intermediate columns 62L, 62R are configured so that the front side can be opened and closed with the rear end side as a fulcrum. is provided. With this configuration, it is possible to prevent contact when the doors 60L and 60R are opened and closed and contact when the windows 63L and 63R are opened and closed, and the side surfaces of the vehicle body can be visually recognized over a wide angular range. 7 and 8 show examples of the support arm 56L and the side cover 57L provided on the left side of the vehicle body, the support arm 56R and the side cover 57R having the corresponding configuration are provided on the right side of the vehicle body (FIGS. 2 and 5). ).

FIG. 9 shows the supporting structure of a monitor screen 64 that displays image information and sensor information. On the inside of the cabin, one of the intermediate struts (the right intermediate strut 62R in the figure) rotates around the vertical support shaft 66 at the proximal end of a monitor stay 65 having a support portion for the monitor screen 64 formed on the distal end side. It is installed so as to be rotatable from a position approaching the operator in the cockpit (FIG. 9A) to a position approaching the right door 60R (FIG. 9B). With this configuration, it is possible to appropriately change the position and display on the monitor in accordance with the operator's driving posture or the like.

7 Driver's seat 16 Cabin 22 Roof 23L Left monitoring camera 23R Right monitoring camera 25 Positioning controller (communication control unit)
26 antenna 27 camera controller (communication control unit)
28 antenna 29L left fixed arm 29R right fixed arm 46 guard member 50 guard member

Claims (2)

A roof (22) of a cabin (16) surrounding a driver's seat (7) is provided, a communication control unit (25, 27) is provided on the upper surface of the roof (22), and the communication control unit (25, 27) is surrounded. A guard member (46, 50) formed in a U-shape (46a) is provided,
The communication control units (25, 27) have antennas (26, 28) that protrude upward from housings (25a, 27a) that house the communication control units (25, 27),
The upper part of the guard member (46, 50) is provided at a position higher than the height of the antenna (26, 28), and the lower part is provided with a fitting part (46b) that is fitted and attached to the elastic support metal fitting (48),
The guard member (46) includes a fitting pipe portion (46b) provided as the fitting portion (46b) by bending outward from the lower portion of the left and right leg portions of the inverted U shape, and the fitting pipe portion (46b). a grip portion (46c) bent from the portion (46b);
A left-right mounting stay (45) supported in a horizontal position is provided, and the elastic support bracket (48) is attached to an intermediate fixing bracket (47) provided on the mounting stay (45). a seat plate portion (48a) and an elastic receiving portion (48b) for receiving the fitting pipe portion (46b);
The tip of the grip portion (46c) of the guard member (46) abuts the roof (22), and the extended tip of the intermediate fixing bracket (47) is the inverted U-shaped portion of the guard member (46). A work vehicle that abuts on the left and right legs. A roof (22) of a cabin (16) surrounding a driver's seat (7) is provided, a communication control unit (25, 27) is provided on the upper surface of the roof (22), and the communication control unit (25, 27) is surrounded. A guard member (46, 50) formed in a U-shape (46a) is provided,
The communication control units (25, 27) have antennas (26, 28) that protrude upward from housings (25a, 27a) that house the communication control units (25, 27),
The upper part of the guard member (46, 50) is provided at a position higher than the height of the antenna (26, 28), and the lower part is provided with a fitting part (46b) that is fitted and attached to the elastic support metal fitting (48),
The left and right fixed arms (29L, 29R) supporting the communication control unit (27) are fixed to hanging metal fittings (31L, 31R) fixed to the rear strut (20) of the cabin (16). The left and right monitoring cameras (23L, 23R) are fixed via right fixing arms (29L, 29R), and the side surfaces of the left and right monitoring cameras (23L, 23R) are attached to the hanging metal fittings (31L, 31R). and a work vehicle provided with camera guards (43L, 43R) so as to cover the rear surface.

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