JPH10218014A - Running vehicle with cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a cabin main unit to be mounted on a seat floor, simplify assembly constitution of a cabin, reduce noise coming into a cabin room by using a seal member, simplify seal constitution, and reduce a cost. SOLUTION: A mid frame Ca is mounted in a chassis frame A, the mid frame Ca is coated with a seat floor 12 molded by a thin thickness plate material, on its top, a cabin main unit Cb is mounted through a seal member. A work machine lift lever is directly mounted in a bracket fixedly provided in a lever mounting plate of the mid frame Ca, the periphery thereof is sealed by a weather strip additionally provided in the seat floor 12 and a seal member fixed to the mid frame Ca.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling vehicle with a cabin, and more particularly, to a vehicle having a cabin at a front portion and an engine room at a rear portion so that a working machine can be connected in front of and behind the vehicle body. TECHNICAL FIELD The present invention relates to a vertically divided structure of a cabin in a front cabin agricultural vehicle having working machine coupling devices at a front end and a rear end.

[0002]

2. Description of the Related Art In a conventional agricultural tractor or the like, an integrated cabin frame is erected on a chassis via a vibration isolating rubber. Further, the operation lever and the pedal are extended from the transmission case, and the seat portion and the guide portion under the seat are assembled in accordance with this. For example, it is disclosed in JP-A-60-35673 and JP-A-60-42164.

[0003]

Problems to be solved by the prior art are that the number of assembling steps and the number of parts are large and that the sealing performance is poor and the sound insulation is poor. First, in assembling the lever or pedal and the guide portion, the guide portion and the lever are divided, and further, a complicated sealing structure is required, the number of assembly steps and the number of parts are increased, and the seal of the lever guide portion is Since it is applied to the movable part of the lever, it is incomplete and has poor sound insulation. Furthermore, in the cabin, where welding is not possible,
A coking process must be performed. In the integrated cabin structure, the assembly of the lever and the pedal is performed after the cabin is assembled on the chassis, and the assembly work is performed in a small room.

[0004]

The present invention uses the following means to solve the above-mentioned problems. First, in a traveling vehicle with a cabin, an operation lever and switches are mounted on a seat supporting midframe attached to a vehicle body, and a seat floor is disposed on the midframe via a sealing material. The cabin main body is erected on the floor via a sealing material.

Second, in a traveling vehicle with a cabin, the cabin is divided into upper and lower parts, an upper part is a cabin body, a lower part is a mid frame for supporting a seat, and a seat floor formed of a thin plate is interposed therebetween. The seat floor is covered with the seat floor around the operation lever assembled to the mid frame, and a portion where the mid frame and the seat floor are joined around the operation lever is sealed with a weather strip and urethane or an adhesive sealant. I do.

Third, in a traveling vehicle with a cabin, the cabin is divided into upper and lower parts, an upper part is a cabin body, a lower part is a mid frame for supporting a seat, and a seat floor is interposed between the two. A differential lock pedal is attached, and the seat floor is shaped to guide a heel portion of a foot on which the differential lock pedal is depressed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a front-cabin agricultural vehicle according to the present invention will be described with reference to the accompanying drawings. FIG.
Fig. 2 is a side view of the front cabin agricultural vehicle according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a rear view thereof, Fig. 4 is a plan view of the same except for a cabin body Cb, and Fig. 5 is a chassis frame. A is a plan view, FIG. 6 is a front view, FIG. 7 is a rear view, FIG. 8 is a cross-sectional view taken along line XX in FIG. 5, FIG. 9 is a side view of the main frame 1, FIG. FIG. 11 is a rear view, FIG. 12 is a plan view of the mid frame Ca, FIG. 13 is a side view, FIG. 14 is a rear view,
15 is a plan view of the seat floor 12, FIG. 16 is a front view thereof, FIG. 17 is a rear view thereof, FIG. 18 is a side view thereof, FIG. 19 is a sectional view taken along line YY in FIG. 15, and FIG. 21, FIG. 21 is a side view, FIG. 22 is a front view, FIG. 23 is a rear view, and FIG. 24 is a working machine lifting lever 15F (15
FIG. 25 is a partial front cross-sectional view showing the seal configuration of R), and FIG. 25 is a partial side cross-sectional view showing the seal configuration of the working machine elevating lever 15F below the right operation panel section 12d of the seat floor 12 and the configuration of the differential lock pedal 16. 26 is a partial plan partial sectional view showing the configuration of the right operation panel section 12d and the differential lock pedal 16, FIG. 27 is a side view of the lower side glass 27, and FIG.

First, the configuration of the chassis frame A will be described with reference to FIGS. Chassis frame A is
A pair of left and right main frames 1.1 are arranged in the front-rear direction,
The main frames 1 and 1 are connected to each other at appropriate locations, and brackets for attaching various members are provided at appropriate locations on each main frame 1.

The main frame 1 is, as shown in FIG. 9, a square or round steel pipe material provided with an inclined portion in the middle. The inclined portion is the inclined portion 1b, the portion one step lower than the front portion is the front horizontal portion 1a, and the portion higher one step behind the rear portion is the rear horizontal portion 1.
c. When this is applied as the chassis frame A of the front cabin agricultural vehicle of the present invention, the main frame 1 is arranged in the front-rear direction of the vehicle body, and the front and rear horizontal portions 1a.
1c is horizontal in a side view, and in a front view, the inclined portion 1b is in an inclined shape,
The front horizontal portion 1a is inclined so as to be outside the rear horizontal portion 1c. That is, as shown in FIGS. 6 and 7, both the inclined portions 1b of the left and right main frames 1 are formed into an eight-shape in a front view. As a result, the front horizontal portion 1a is one step lower than the rear horizontal portion 1c as shown in FIG. 8, and at the same time, as shown in FIG. 5, the width between the front horizontal portions 1a and 1c is larger than the width between the rear horizontal portions 1c and 1c. Is longer.

The present invention is an agricultural vehicle in which a cabin is disposed at a front portion of a vehicle body. Therefore, it is desirable to lower the front part of the cabin so that the passenger can easily get on and off the vehicle, and the front view can be applied to a lowland. The front horizontal portion 1a is a rear horizontal portion 1 on which a seat, a hood and the like are placed.
Since it is one step lower than c, the front part of the cabin is lower.

In addition, since the space between the front horizontal portions 1a is wide, the left-right direction of the cabin to be erected can be widened and the livability can be improved, while the rear hood portion is provided at the rear horizontal portion. Since the width between 1c and 1c is narrowed down, the left and right width of the bonnet can be narrowed down, and in combination with the shape of the rear glass 26 and the lower side glass 27 of the cabin C described later, the working machine behind the left and right outer sides of the hood Can be checked from the cabin.

Next, another configuration of the chassis frame A will be described. Left and right main frames 1.1 (front horizontal section 1
At the front end of a.1a), a front plate 2.2 is provided, and the front plate 2.2 is provided with screw holes 2a. Both front plates 2.2
The rear end of the left and right main frames 1.1
.Front work machine coupling device FL, which will be installed between 1a
Is fixed to the front link frame 3 for supporting the first frame. The front end portions of the rear horizontal portions 1c are connected to each other by a connection frame 4. Immediately thereafter, the screw holes 5 for mounting the vibration isolating rubber inward from the rear horizontal portions 1c.
The cabin mounting brackets 5.5 having a are protruded.

At the rear half of the rear horizontal portions 1c, brackets 6, 6... For supporting a transmission case M, a traveling transmission shaft, a PTO transmission shaft, and the like are provided. Has a rear link frame 7 for supporting a rear working machine coupling device RL described later.

With reference to the chassis frame A, the layout configuration of each part of the front cabin agricultural vehicle will be described. Below the chassis frame A, axle cases for front wheels and rear wheels are arranged below the rear horizontal portion 1c of the main frame 1, and front wheels FW and rear wheels RW of the same diameter are suspended. . Note that an inclined portion 1b of the main frame 1 is disposed immediately before the front wheel FW. A front working connecting device FL and a rear working connecting device RL are attached to the front end and the rear end of the chassis frame A, respectively.
In the upper part of the chassis frame A, the cabin C is mounted over the front horizontal part 1a, the inclined part 1b, and the front part of the rear horizontal part 1c of the main frame 1,
A hood B is mounted on the rear horizontal portion 1c from the rear end of the cabin C to the rear end of the chassis frame A. The bonnet B is surrounded by a work frame configured to allow various objects such as a fuel tank to be placed thereon, while also protecting the hood.

The interior of the hood B is an engine room, and the hood B is located below the chassis frame A.
A transmission case M for HST is disposed below the transmission case. The transmission case is connected to an axle case of a rear wheel to transmit running power to a rear wheel RW. To transmit the driving power to the front wheels FW. Further, from the transmission case M, a rear universal joint RU for transmitting power to a working machine connected to the rear work connecting device RL is provided.
The PTO shaft is protruded rearward, and the front work connecting device FL
A PTO shaft is also connected to the front with respect to a front universal joint FU for transmitting power to a working machine to be connected.

Next, the mounting configuration of the cabin C to the chassis frame A will be described. First, cabin C
As shown in FIG. 10 and FIG. 11, the mid frame Ca, the seat floor 12, and the cabin main body Cb are vertically combined. The mid frame Ca has a configuration as shown in FIGS.
8, the left and right lower frames 9.9 in the front-rear direction and the seat frame 10 are combined. At the lower end of each support frame 8 and at the front end of each lower frame 9, anti-vibration rubber mounting portions 8 a and 9 a having anti-vibration rubber mounting screw holes are formed, and when mounting to the chassis frame A, The screw holes of the anti-vibration rubber mounting portions 8a and 9a are connected to the anti-vibration rubber mounting screw holes 2a of the chassis frame A.
According to 5a, the front vibration isolating rubber 11F and the rear vibration isolating rubber 11R are screwed and fastened together. In addition,
As for the front vibration isolating rubber 11F, the floor frame 19 of the cabin body Cb is fastened together as described later.

The mid frame Ca has a frame structure for supporting the seat floor 12 from the inside, and a central portion of the seat frame 10 has a seat mounting portion 10 on which the seat S is mounted.
a, and left and right portions thereof are one step lower, and an operation panel frame portion 10 b, 1 in which various switches and levers are arranged in combination with the seat floor 12.
0c. The left operation panel frame 10b
As will be described later, when the seat floor 12 is placed on the mid frame Ca, this is a portion for supporting the left operation panel 13L of the 2WD / 4WD changeover switch and the air conditioning switch arranged on the left side of the seat S, and the right operation panel frame portion. 10c is
This portion supports a right operation panel 13R described later, which is an operation panel of a lever for PTO control and for lifting and lowering the work implement. In particular, the right operation panel frame 10c is directly connected to the front working machine elevating lever 15F and the rear working machine elevating lever 15R.
10f ・ 1 Bracket for lifting lever for mounting
A lever mounting plate 10d having 0 g is placed. 10e is a PTO transmission lever guide groove.

Each working machine lifting lever 15F, 15R is
Conventionally, it is extended from the transmission case, the combination with the guide groove formed on the seat floor side is complicated, and the sealing structure is complicated. However, in the present invention, as shown in FIGS. This is a structure that is directly attached to the lifting lever brackets 10e and 10f provided in the above, and the attachment is easy. Also, since the cabin body Cb and the seat floor 12 are assembled to the mid frame Ca before the mounting, the cabin is integrated as in the related art,
The situation in which the lever is assembled in a small indoor space after the cabin is mounted on the chassis is avoided, and the assembly is facilitated. Further, as for the seal configuration, a reliable seal can be achieved with a simple structure as described later.

The seat floor 12 shown in FIGS.
Is formed from a thin plate material. When the cabin C is configured and mounted, as described above, the anti-vibration rubber 11 (11F
・ 11R) and cover the mid-frame Ca attached to the chassis frame A via the support frame 8.8
The floor mounting portions 8b at the upper end of the seat floor 1
2 and is screwed to the frame mounting seats 12a. The seat S is mounted on a seat base 12b at the center of the seat floor 12 as shown in FIG. 4, and a left operation panel 12c is arranged on the left side and a right operation panel 12d is arranged on the right side. As shown in FIG. 4, the left operation panel unit 12c has a 2WD
A left operation panel 13L equipped with a / 4WD switch and an air conditioning switch is assembled.

On the other hand, an opening is formed in the right operation panel section 12d, and the right operation panel 13R is attached so as to close the opening as shown in FIGS. As shown in FIG. 4, the right operation panel 13R has lever guide grooves 13a and 1a.
3b and 13c are formed, and are extended from the work case elevating levers 15F and 15R attached by the respective elevating lever brackets 10f and 10g of the lever mounting plate 10d of the mid frame Ca and the transmission case M. The PTO shift lever 14 protruding from the PTO shift lever guide groove 10e is connected to each of the lever guide grooves 13a.
It protrudes upward through 3b and 13c.

The edge of the opening in the right operation panel 12d is bent downward as shown in FIGS. 24 and 25, and a weather strip 30 is attached to the lower edge. On the other hand, a sealing member 31 made of urethane is attached to the right operation panel frame portion 10c of the mid frame Ca provided thereunder, and the sealing member 3
1 is brought into contact with the weather strip 30. With such a simple configuration, the gap between the mid frame Ca and the seat floor 12 is filled in the right operation panel portion, and the lever guide grooves 13a, 13b, 1 of the right operation panel 13R are formed.
Through 3c, outside air enters above the seat floor 12,
That is, a situation in which outside air enters the cabin C is avoided.

4, 25, and 26, a vertical diff lock pedal groove 12e having an open bottom is formed in a portion on the right side of the front end of the seat floor 12, and below the bottom opening. A differential lock pedal guide stay 32 is provided, and the differential lock pedal 17 having a pivotal support point on the vertical plate-shaped differential lock pedal stay 33 is positioned above the bottom opening of the differential lock pedal groove 12e below the differential lock pedal guide stay 32. It is protruding. The differential lock pedal stay 33 is screwed to a mounting plate 34 fixed to the lower right frame 9 of the mid frame Ca.
Due to the configuration of the differential lock pedal groove 12e, the heel of the foot which depresses the differential lock pedal 17 is guided, so that interference with the seat floor 12 can be avoided.

The cabin main body Cb shown in FIGS. 1 to 3 and FIGS. 20 to 23 has an upper frame 17a on both sides.
Lower horizontal frame 17b and lower inclined frame 1
7c is provided. A roof frame 18 is disposed between the upper ends of the left and right upper frame frames 17a. Further, the lower horizontal frame 17b is made lower in accordance with the front horizontal portion 1a of the main frame 1 in the chassis frame A, and the floor frame 19 is located between the left and right lower horizontal frames 17b.
The floor frame 19 is provided with anti-vibration rubber mounting portions 19a, 19a so as to match the anti-vibration rubber mounting portions 9a, 9a of the mid frame Ca.

At the time of mounting to the chassis frame A, the vibration isolating rubber mounting portions 9a and 19a are fitted to the vibration isolating rubber mounting screw holes 2a of the chassis frame A by the front vibration isolating rubber 11F. Together. That is, the front portion of the cabin main body Cb is thus supported by the chassis frame A together with the mid frame Ca via the front vibration isolating rubber 11F. Note that a step 20 is provided at the outer end of each of the left and right lower horizontal frame frames 17b.
Further, a floor 29 shown in FIG. 2 is attached on a floor frame 19 attached and arranged on the mid frame Ca.

The front part of the cabin main body Cb is lowered by the lower end portion in accordance with the lower front horizontal portion 1a as described above, so that the work machine connected to the front work machine connecting device FL can be used. The working state can be visually recognized down to the lower part. Left and right upper frame 17
A windshield 25 is provided between the front ends of the a and 17a as shown in FIG. As shown in FIGS. 1 and 10, a side door 21 having a side glass 21a is provided on both left and right sides so as to be surrounded by the frame 17 (the upper frame 17a, the lower horizontal frame 17b, and the lower inclined frame 17c). It is arranged. The rear end of the side door 21 is attached to the front end of the pillar 22 via a hinge. At the rear of the pillar 22, a rear glass 26 is disposed over the rear surface and the left and right corners of the rear end as shown in FIGS.

The left and right lower inclined frame frames 17c
Below the lower side glass frame 23 for mounting the lower side glass 27 shown in FIGS. 27 and 28.
When mounting the cabin main body Cb, a urethane sealing member 35 is attached to the seat floor 12 as shown in FIGS. 15 to 18, and the lower end of the side glass frame 23 of the cabin main body Cb is attached. The sealing member 35
Place on top of. That is, the cabin main body Cb and the mid frame 12 sandwich the seat floor 12 formed of a thin plate material. If the entire cabin C has an integral structure as in the prior art, the seat floor 12 formed of a thin plate material has
Although it is necessary to caulk the portion where the cabin main body Cb and the midframe Ca are joined, such a sandwiching structure saves labor for caulking.

The rear ends of the lower side glass frame 23 and the lower side glass 27 are bent inward so that the lower side glass 27 is disposed at both left and right corners of the rear end, and is disposed below the upper rear glass 26. , So that the back can be seen.

At the center of the lower part of the front surface of the cabin body Cb, a front cover 24 is formed in the shape of an arch as viewed from the front, which is recessed rearward, as shown in FIG. The device FL is included. The dashboard 28 is attached so as to cover the front cover 24, and a handle 36 and the like are attached to the dashboard 28.
That is, the front working machine coupling device FL is connected to the dashboard 28
And the front working machine coupling device F
With L, the range that blocks the front view can be reduced, and the protection can be achieved.

The bonnet B is disposed so as to fit in the space between the rear ends of the left and right lower side glass frames 23 at the rear of the cabin Cb. Chassis frame A
Left and right horizontal portions 1c of the main frame 1
The space between the front horizontal portions 1a is narrower than that between the front horizontal portions 1a, and the lateral width of the bonnet B is configured to be shorter than the lateral width of the cabin C. Accordingly, the rear ends of the lower side glass frame 23 and the lower side glass 27 are bent as described above, and the rear glass portion is disposed on the left and right outer sides of the bonnet B, so that the rear side can be viewed from the left and right outer sides of the bonnet B. And the rear working machine coupling device R
The working state of the working machine connected to L can be easily confirmed.

In the case of a conventional cab-mounted rear tractor, a fender is to be welded and fixed to the outside of the lower inclined frame frame 17c. On the left and right sides of the cabin C, which is an upper portion of the front wheel FW, the fenders are provided. Not installed. Therefore, not only is the welding of the cabin and the fender unnecessary, but also the rear view is not obstructed by the fender. Also, the vehicle width and tire width of the rear wheel RW are the same as those of the front wheel FW, and the rear wheel RW does not protrude left and right largely and there is no fender, so that it does not obstruct the rear view. I have to. This, together with the shape of the lower side glass 27, makes it possible to confirm the state of the working machine connected to the rear working machine connecting device RL.

[0031]

The present invention relates to a traveling vehicle equipped with a cabin, for example, a front cabin type agriculture in which a cabin is provided at a front portion of a vehicle body, a bonnet is provided at a rear portion, and a work machine coupling device is provided at a front end and a rear end of the vehicle body. Since the vehicle is configured as described above, the following effects can be obtained. First, regarding the cabin configuration, as described in claim 1, levers and switches can be assembled in the mid frame in advance, and these are assembled before the cabin is mounted. It can be avoided, and furthermore, since it is configured to be directly attached to the midframe, a complicated process of combining a lever extending from the transmission case with a guide member or a seal member is not required. Further, the cabin main body can be mounted and mounted on a seat floor, so that the assembling structure of the cabin is simplified, and the noise entering the cabin can be reduced by using the seal member. In addition, the seal configuration is simplified, and the cost is reduced.

Furthermore, according to the second aspect of the present invention, the seat floor formed of a thin plate material is sandwiched between the cabin body and the mid-floor, so that it is not necessary to caulk a joint portion of the non-weldable seat floor. Furthermore, although outside air can easily enter the cabin through the periphery of the operation lever, the weather strip and urethane seal at the joint between the seat floor and the midframe can prevent outside air from entering with a simple configuration, Cost.

According to the third aspect of the present invention, the differential lock pedal can be assembled to the mid frame before the cabin body is mounted, and the operation of mounting the pedal in a narrow cabin is complicated. To avoid the heel of the differential lock pedal,
Formed on the seat floor, it is possible to prevent the foot from being depressed from the differential lock pedal at low cost.

[Brief description of the drawings]

FIG. 1 is a side view of a front-cabin agricultural vehicle according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a plan view showing a state where a cabin main body Cb is removed.

FIG. 5 is a plan view of the chassis frame A.

FIG. 6 is a front view of the same.

FIG. 7 is a rear view of the same.

8 is a sectional view taken along line XX in FIG.

FIG. 9 is a side view of the main frame 1. FIG.

FIG. 10 is a side view showing the configuration of the cabin C and its mounting structure on the chassis frame A.

FIG. 11 is a rear view of the same.

FIG. 12 is a plan view of a mid frame Ca.

FIG. 13 is a side view of the same.

FIG. 14 is a rear view of the same.

15 is a plan view of the seat floor 12. FIG.

FIG. 16 is a front view of the same.

FIG. 17 is also a rear view.

FIG. 18 is a side view of the same.

19 is a sectional view taken along line YY in FIG.

FIG. 20 is a plan view of the cabin main body Cb.

FIG. 21 is a side view of the same.

FIG. 22 is a front view of the same.

FIG. 23 is a rear view of the same.

FIG. 24 is a partial front sectional view showing a seal configuration of a working machine lifting / lowering lever 15F (15R) attached to a mid frame Ca.

FIG. 25 is a partial side sectional view showing a seal configuration of a work implement elevating lever 15F below a right operation panel section 12d of the seat floor 12, and a configuration of a differential lock pedal 16.

FIG. 26 shows a right operation panel section 12d and a differential lock pedal 1.
6 is a partial plan partial sectional view showing the configuration of FIG.

FIG. 27 is a side view of the lower side glass 27.

FIG. 28 is a plan view of the same.

[Explanation of symbols]

 A Chassis frame B Bonnet C Cabin Ca Mid frame Cb Cabin body S Seat 1 Main frame 1a Front horizontal section 1b Inclined section 1c Rear horizontal section 2 Front plate 2a Screw holes for mounting anti-vibration rubber 5 Bracket for mounting cabin 5a Anti-vibration rubber Mounting screw hole 8 Support frame 8a Anti-vibration rubber mounting section 8b Floor mounting section 9 Lower frame 9a Anti-vibration rubber mounting section 10 Seat frame 10a Seat mounting section 10b Left operation panel frame section 10c Right operation panel frame section 10d Lever mounting Plate 10e PTO shift lever guide groove 10f Lifting lever bracket 10g Lifting lever bracket 11F Front vibration isolating rubber 11R Rear vibration isolating rubber 12 Seat floor 12c Left operation panel 12d Right operation panel 12e Diff lock pedal groove 13L Left operation panel 13R Right operation panel 13a PTO shift lever guide groove 13b Elevating lever guide groove 13c Elevating lever guide groove 14 PTO shift lever 15F Front work machine elevating lever 15R Rear work machine elevating lever 16 Diff lock pedal 17 Frame frame Reference Signs List 18 roof frame 19 floor frame 23 lower side glass frame 30 weather strip 31 seal member 32 differential lock pedal guide stay 33 differential lock pedal stay 34 mounting plate 35 seal member

Claims (3)

[Claims] In a traveling vehicle with a cabin, an operation lever and switches are mounted on a seat supporting midframe attached to a vehicle body, and a seat floor is disposed on the midframe via a sealing material. A traveling vehicle with a cabin, wherein a cabin body is erected on a floor via a sealing material. 2. In a traveling vehicle with a cabin, a cabin is divided into upper and lower parts, an upper part is a cabin main body, a lower part is a mid frame for seat support, and a seat floor formed of a thin plate material is interposed therebetween. Covering the periphery of the operation lever assembled to the mid frame with the seat floor,
A traveling vehicle with a cabin, characterized in that a joint portion between the midframe and the seat floor around the operation lever is sealed with a weather strip and an adhesive sealant. 3. A traveling vehicle with a cabin, wherein the cabin is divided into upper and lower parts, an upper part is a cabin body, a lower part is a mid frame for supporting a seat, a seat floor is interposed therebetween, and a differential lock pedal is provided on the mid frame. A traveling vehicle with a cabin, wherein the seat floor is shaped so as to guide a heel portion of a foot that steps on the differential lock pedal.