JP7589641B2 - Work vehicles - Google Patents

Description

The present invention relates to a work vehicle such as an agricultural tractor, and in particular to a protective structure for a communication control unit and the like arranged on the upper surface of the cabin roof of the vehicle.

A known work vehicle has a communication control unit mounted on the roof of the cabin that encloses the driver's seat, a guard that encloses the communication control unit from above, and a cover that covers the communication control unit from above (see Patent Document 1).

JP 2020-196319 A

When configured in this way, the guard member protects the communication control unit and prevents damage. However, in recent work vehicles that have become more multifunctional, the number of parts mounted on the roof has also increased, making it necessary to protect the entire roof when putting the cover on.

The present invention aims to prevent unexpected interference with the canvas top sheet that covers the communication control unit mounted on the top surface of the roof to protect it from dust and rainwater.

In order to solve the above problems and achieve the object, the first invention provides a vehicle body (1) equipped with a cabin (16) surrounding a driver's seat (7), mirror stays (32L, 32R) for attaching side mirrors (31L, 31R) to left and right front pillars (18L, 18R) of the cabin (16), hook fasteners (40L, 40R) for hoisting the cabin (16) to left and right rear pillars (20L, 20R), and a left and right mirror stays (40L, 40R) for mounting the side mirrors (31L, 31R) to the left and right front pillars (18L, 18R). A front base stay (35L, 35R) is attached to the front base stay (32L, 32R), and a rear base stay (42L, 42R) is attached to the left and right hook fasteners (40L, 40R), respectively. A pipe frame (30L, 30R) having an inverted U shape in a side view is attached between the front base stay (35L, 35R) and the rear base stay (42L, 42R), and the pair of left and right pipe frames (30L, 30R) are connected at their intermediate portions by a horizontal frame (46),
The front base stays (35L, 35R) and the rear base stays (42L, 42R) each include a cylinder (34, 41) that passes through the pipe frame (30L, 30R) from above,
The pipe frames (30L, 30R), which are inverted U-shaped when viewed from the side, are configured within the rotation range of a door (50) provided in a cabin (16) by changing the insertion direction relative to the cylinders (34, 41), turning them upside down, and replacing them from below, thereby forming a work vehicle.
The second present invention is a work vehicle of the first present invention, in which the connection of the front base stays (35L, 35R) to the mirror stays (32L, 32R), the connection of the rear base stays (42L, 42R) to the hook fasteners (36L, 36R), and the connection of the cross frame (46) to the pipe frame (30L, 30R) are each fastened by knob bolts (39, 43, 47).
A third aspect of the present invention is the work vehicle according to the first or second aspect of the present invention, wherein an insertion hole (30d) for a split pin (48) is provided at the ends of the left and right pipe frames (30L, 30R).
The first invention related to the present invention comprises a traveling vehicle body 1 having a cabin 16 surrounding a driver's seat 7, mirror stays 32L, 32R for attaching side mirrors 31L, 31R to left and right front pillars 18L, 18R of the cabin 16, hook fasteners 40L, 40R for hoisting the cabin 16 are provided on left and right rear pillars 20L, 20R, front base stays 35L, 35R are provided on the left and right mirror stays 32L, 32R, and rear base stays 42L, 42R are provided on the left and right hook fasteners 40L, 40R, respectively, pipe frames 30L, 30R having an inverted U-shape when viewed from the side are attached between the front base stays 35L, 35R and the rear base stays 42L, 42R, and the pair of left and right pipe frames 30L, 30R are connected at their middle by a horizontal frame 46.

The second invention related to the present invention is the first invention related to the present invention , in which the connection of the front base stays 35L, 35R to the mirror stays 32L, 32R, the connection of the rear base stays 42L, 42R to the hook fasteners 36L, 36R, and the connection of the cross frame 46 to the pipe frames 30L, 30R are fastened by knob bolts 39, 43, and 47, respectively.

A third aspect of the present invention is characterized in that in the first or second aspect of the present invention , insertion holes 30d for the split pins 48 are provided in the ends of the left and right pipe frames 30L, 30R.

According to the present invention, the pipe frames 30L, 30R and the horizontal frame 46 can protect the entire cabin roof when a top sheet (cover) is hung on the cabin 16 from above.
According to the first invention related to the present invention , the pipe frames 30L, 30R and the horizontal frames 46 can protect the entire cabin roof when a top sheet (cover) is hung from above the cabin 16. In this way, the pipe frames 30L, 30R are used when hanging the top sheet, and can be simply configured by simply inserting pipes into the front base stays 35L, 35R and the rear base stays 42L, 42R, making them easy to attach and detach. The same radiator support frame 86 can be used to fix a wide radiator 84A or a narrow radiator 84B.

According to the second invention related to the present invention , in addition to the effects of the first invention related to the present invention , the pipe frames 30L, 30R and the horizontal frame 46 are fixed by tightening the knob bolts 39, 43, 47, so that they can be easily attached and detached without the use of tools.

The third invention related to the present invention has the effects of the first and second inventions related to the present invention , and further, it is possible to prevent the pipe frames 30L, 30R from accidentally coming loose when fixed and attached. Also, by attaching the pipe frames 30L, 30R upside down, the cabin door 50 is prevented from being opened or closed because the pipe frames 30L, 30R face downward, which prevents tampering.

1 is a side view of a tractor according to an embodiment of the present invention. 1 is a perspective view of a cabin in a standard state of a pipe frame of a tractor according to an embodiment of the present invention, viewed from above and in the front; 1 is a perspective view of a cabin of a tractor according to an embodiment of the present invention in an inverted pipe frame state, viewed from above and in front. FIG. 1 is a perspective view of a pipe frame and its surroundings of a tractor according to an embodiment of the present invention. FIG. FIG. 2 is an exploded perspective view of a front base stay and its surroundings of the tractor according to the embodiment of the present invention. FIG. 2 is a side view of a rear base stay and its surroundings of the tractor according to the embodiment of the present invention. FIG. 2 is an exploded perspective view of a rear base stay and its surroundings of the tractor according to the embodiment of the present invention. FIG. 2 is an exploded perspective view of left and right pipe frames and a horizontal frame of the tractor according to the embodiment of the present invention.

Below, an embodiment of the present invention will be described in detail with reference to the drawings.

Figure 1 shows a tractor, with a diesel engine E mounted inside a bonnet 2 at the front of the vehicle body 1. 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, which form part of a hydraulic lifting mechanism, are attached to both the left and right sides of the cylinder case 8 so that they can be rotated. 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. The lower links 12 are connected to the lift arms 9 via lift rods 13, allowing the working machine R to be lifted and lowered.

The steering wheel 6, 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, which makes it difficult for vibrations of the vehicle body to be transmitted to the cabin 16.

The cabin 16 is made up of a floor 17, front pillars 18 erected at the front left and right of the floor 17, rear pillars 20 erected at the rear left and right of the driver's seat 7, intermediate pillars 62 erected at 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.

The roof 22 of the cabin 16 is equipped with devices related to driving assistance, such as a surveillance camera, a positioning controller, and a camera controller. For example, the surveillance camera 23 captures images of the front, rear, and sides of the tractor body and acquires the image data, and the positioning controller 25, which serves as a communication control 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, also a communication control unit.

The positioning controller 25 is equipped with 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). The positioning antenna acquires satellite signals from GPS satellites, etc., and the calculation unit processes the satellite signals and correction signals received by the antenna 26 from the base station to calculate the vehicle's position information, driving direction, etc. This position information, etc. is transmitted to the control unit C by the output unit. A forward monitoring camera 23f is provided below and in front of the positioning controller 25.

A housing 25a housing the calculation unit and other components of the positioning controller 25 is disposed above the front side of the roof 22. The camera controller 27 is configured with 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 communication antennas 28 (two in the illustrated example).

The housing 27a that houses the camera controller 27 is located above the rear side of the roof 22.

The following describes the configuration of the left and right pipe frames 30L, 30R that are provided to avoid interference with the top sheet that covers the entire vehicle body and to protect the housing 25a and antenna 26 that house the calculation unit, etc. of the positioning controller 25, and the housing 27a and communication antenna 28 that house the calculation unit, etc. of the camera controller 27 from dust and rainwater.

Mirror stays 32L, 32R are provided on the left and right front pillars 18L, 18R of the cabin 16 to attach side mirrors 31L, 31R. Mirror arms 33L, 33R are extended from the mirror stays 32L, 32L so as to be rotatable around a vertical pivot point, and the side mirrors 31L, 31R are supported in a suspended manner on the tip side of the mirror arms 33L, 33R. Front base stays 35L, 35R, which are L-shaped members to which a pipe insertion cylinder 34 is fixed, are fixed to the vertical flat plate portions 32aL, 32aR of the mirror stays 32L, 32R. In detail, the vertical flat plate portions 32aL, 32aR are fixed in a sandwiched manner by inner stays 36 that face the vertical plate portions of the front base stays 35L, 35R. That is, the vertical plate portions of the front base stays 35L, 35R and the opposing inner stay 36 are spaced at a fixed distance by tubes 37 and small bolts 38, and the two are fastened in a sandwiched manner by knob bolts 39 that pass through the mirror stays 32L, 32R. A vertically oriented pipe material can be passed through the cylinder 34.

On the other hand, the left and right rear pillars 20L, 20R of the cabin 16 are equipped with hook fasteners 40L, 40R for lifting the cabin 16. The hook fasteners 40L, 40R are flat plate members with a thickness of appropriate strength and a notch 40a for fastening a hook (not shown) that are welded and fixed to the upper ends of the rear pillars 20L, 20R in a jutting shape to the sides. The left and right hook fasteners 40L, 40R are fixed with rear base stays 42L, 42R, which are L-shaped members with pipe insertion cylinders 41 fixed thereto. In other words, the rear base stays 42L, 42R are overlapped with the hook fasteners 40L, 40R and fastened with knob bolts 43. 44 is a positioning pin. The cylinder 41 can be passed through a vertically oriented pipe material, just like the cylinder 34.

A pair of pipe frames 30L, 30R, which are inverted U-shaped in side view, are provided on the left and right between the cylinders 34 of the front base stays 35L, 35R and the cylinders 41 of the rear base stays 42L, 42R, and their vertical parts 30a, 30b are inserted from above into the cylinders 34 of the front base stays 35L, 35R and the cylinders 41 of the rear base stays 42L, 42R. Each vertical part 30a, 30b has a flange 30c, 30e that defines the pipe insertion position.

A horizontal frame 46 is provided in a removable manner in the middle of the left and right pipe frames 30L, 30R. The horizontal frame 46 is made up of a horizontal pipe 46a of a specified length and U-shaped fittings 46b on both ends. The U-shaped fittings 46b are fitted to appropriate positions on the left and right pipe frames 30L, 30R in the front and rear and fixed in place with knob bolts 47.

By providing the left and right pipe frames 30L, 30R and the horizontal frame 46 as described above, the housing 25a and antenna 26 of the positioning controller 25 and the housing 27a and antenna 28 of the camera controller 27, which are arranged on the top surface of the roof of the cabin 16, can be protected when the hood sheet (cover) member is placed, reducing the risk of damage due to unexpected interference.

The pipe frames 30L, 30R are used to hang the hood sheet, and can be simply configured by simply inserting the pipes into the front base stays 35L, 35R and the rear base stays 42L, 42R, making them easy to attach and detach.

A hole 30d for a split pin 48 is provided at the lower end of each of the vertical sections 30a, 30b of the pipe frames 30L, 30R. With this configuration, accidental removal can be prevented by inserting the split pin 48. Also, as shown in FIG. 3, if the left and right pipe frames 30L, 30R are inverted and attached to the cylinders 34 and 41, and the split pin 48 is inserted to prevent downward removal, when the cabin door 50 is opened or closed, the pipe frames 30L, 30R are within the rotation range of the door 50 and prevent the door 50 from opening. This prevents children from playing with the door.

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 that is placed on the top surface of the roof 22.

Reference Signs List 1 Traveling vehicle body 7 Driver's seat 16 Cabin 18L Front support 18R Front support 20L Rear support 20R Rear support 30L Pipe frame 30R Pipe frame 30d (cotter pin) insertion hole 31L Side mirror 31R Side mirror 32L Mirror stay 32R Mirror stay 35L Front base stay 35R Front base stay 39 Knob bolt 40L Hook fastener 40R Hook fastener 42L Rear base stay 42R Rear base stay 43 Knob bolt 46 Horizontal frame 47 Knob bolt 48 Cotter pin

Claims (3)

The vehicle body (1) is provided with a cabin (16) surrounding a driver's seat (7), mirror stays (32L, 32R) for attaching side mirrors (31L, 31R) are provided on left and right front pillars (18L, 18R) of the cabin (16), hook fasteners (40L, 40R) for hoisting the cabin (16) are provided on left and right rear pillars (20L, 20R), and the left and right mirror stays (32L, 32R) are provided with front mirror stays (32L, 32R). Base stays (35L, 35R) are configured on the left and right hook fasteners (40L, 40R), and rear base stays (42L, 42R) are configured on the left and right hook fasteners (40L, 40R), respectively. Pipe frames (30L, 30R) having an inverted U-shape in side view are attached between the front base stays (35L, 35R) and the rear base stays (42L, 42R), and the pair of left and right pipe frames (30L, 30R) are connected at their intermediate portions by a horizontal frame (46) ,
The front base stays (35L, 35R) and the rear base stays (42L, 42R) each include a cylinder (34, 41) that passes through the pipe frame (30L, 30R) from above,
The pipe frames (30L, 30R), which are inverted U-shaped when viewed from the side, are configured within the rotation range of a door (50) provided in a cabin (16) by changing the insertion direction relative to a cylinder (34, 41), turning it upside down, and replacing it from below. 2. The work vehicle according to claim 1, wherein the connection of the front base stays ( 35L, 35R ) to the mirror stays (32L, 32R), the connection of the rear base stays ( 42L, 42R ) to the hook fasteners (36L, 36R), and the connection of the horizontal frame (46) to the pipe frame (30L, 30R) are fastened by knob bolts (39, 43, 47), respectively. A work vehicle as described in claim 1 or claim 2, in which an insertion hole (30d) for a split pin (48) is provided at the ends of the left and right pipe frames (30L, 30R).

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