JP4802412B2 - Tractor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to agricultural tractors, lawn mowers, construction vehicles, and other work vehicles, and more particularly to the structure of a cockpit.
[0002]
[Prior art]
Conventionally, as shown in European Patent Publication No. 0,658,458A1, an agricultural tractor is provided with a substantially left-right symmetric cabin, and a cockpit is disposed at the center of the left and right of the cabin. A device in which various operation devices such as a lever and a switch for operating a transmission unit and a working unit are centrally arranged on one side is known.
[0003]
[Problems to be solved by the invention]
However, in the work vehicle such as the tractor, it is desired to make the left and right widths of the vehicle more compact in particular while being restricted by the environment at the time of working or running, but on the cabin room, that is, on the vehicle, there is room for space. A configuration that does not give a feeling of cramping to a given operator is desired.
[0004]
In particular, in a small work vehicle, as shown in the above publication, when various operation devices are concentrated on one side, the weight of the operation device with respect to the vehicle weight and the support members related to these devices increases, so that However, the problem arises that the comfort of the vehicle is impaired.
[0005]
Therefore, the conventional structure still has room for improvement in the structure of the cockpit and the surroundings of the cockpit, and the present invention aims to make the vehicle compact and improve the comfort of the vehicle.
[0006]
[Means for Solving the Problems]
In view of the above problems, the present invention is configured as follows in the cockpit structure of a work vehicle. That is, according to the first aspect of the present invention, the transmission case (1) is arranged in the longitudinal direction of the vehicle body, the cabin (2) is provided substantially symmetrically above the case (1), and the cockpit ( 3) In the tractor in which 3) is arranged, the left and right virtual center lines (Y) of the cockpit (3) are arranged with respect to the left and right virtual center lines (XX) in the plan view of the cabin (2). -Y) is arranged in a deviated position, and an armrest arm (3a) is provided in a narrow approaching side space (S1) formed between the cabin (2) and the cockpit (3). A panel member (45) on the lateral side of the armrest arm (3a) is provided with a small article mounting portion (4a) or a cup holder (4b), while being formed between the cabin (2) and the cockpit (3). the panel member (46) of the wide separating side space (S2) being, The operating device of the transmission of both (5) and the working unit (6) (7a, 7b, 8a, 8b ...) equipped with, armrests arm (3a) is configured to attach to the cockpit (3) side, the narrow width of the The tractor is characterized in that it is provided in the approaching space (S1) and not in the wide separation space (S2) .
[0007]
Thereby, the operator at the time of operation operates the transmission unit (5) and the working unit (6) of the vehicle on one side of the left and right sides, and handles cups or small items such as juice on the other side.
Further, in the invention of claim 2, a rear glass (28) that can be opened and closed is provided at the rear part of the cabin (2), and a rear glass opening and closing hand catcher (vertical direction) is formed on the left and right sides of the rear glass (28). 35) is provided, and the tractor according to claim 1 is provided .
[0008]
[0009]
【The invention's effect】
In the invention of claim 1 configured as described above, since the armrest arm 3a is provided only on one side of the left and right, the space in the cabin is given a margin as compared with the conventional configuration of providing the armrest arm on both the left and right sides. In addition, when the armrest arm 3a is provided only on one side, the cockpit seat 3 is arranged so as to be deviated to the left and right sides, and one of these is a relaxation space including at least the accessory mounting portion 4a and the cup folder 4b. The other is formed as a control space having at least a transmission lever 7a of the vehicle and an operation lever of the working unit, that is, a position lever 8a. Can be operated without touching juice cups and accessories during the operation of the vehicle, improving the operability of the vehicle Rukoto can.
[0010]
In the invention of claim 2, the rear glass opening / closing hand catcher 35 can be easily operated when the operator twists the body backward .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the structure of the cockpit of the agricultural tractor T, which is a work vehicle, will be described. First, the overall configuration of the tractor T will be described.
[0012]
As shown in FIG. 3, the tractor T has a configuration in which a mounting frame 11 for the engine 10 is arranged at the front of the vehicle body, and a radiator, a battery, and the like are placed across a plate member between the frames 11. . The front of these engines and the like is covered with a front grill 12, and the upper and left and right sides are covered with a hood 13 including a top plate and a side cover.
[0013]
A front axle case for supporting the left and right front wheels 15F and 15F is provided at the lower part of the engine mounting frame 11, and the front wheels 15F and 15F are steered left and right by rotating the steering handle 9. In addition, a clutch housing that houses the main clutch and a transmission case 1 that houses the main and auxiliary transmissions 5 are sequentially connected to the rear portion of the engine 10, and a rear axle that supports the rear wheels 15R and 15R is supported on the rear portion of the transmission case 1. The case 16 is connected.
[0014]
A cabin 2 is provided above the mission case 1 so as to surround a cockpit 3 described later. As shown in FIG. 4, the cabin 2 of the tractor T has a structure in which a floor 20 is installed between the left and right lower frames 18 and 18 and each support column is erected on the floor 20 so as to form a substantially symmetrical frame. It has become. Specifically, front struts 19 and 19 are erected on the front left and right of the floor 20, and lower struts 21 and 21 are erected on the left and right rear axle cases 16 and 16, respectively. An iron plate fender 22 covering the periphery of the rear wheels 15R, 15R is provided on the upper portion of each.
[0015]
Further, middle struts 23 and 23 are erected at the front and rear intermediate portions of the fender 22, and rear struts 25 and 25 are erected at the rear portion of the fender. A front glass 43 is placed between the front struts, a single glass door 26 is placed between the front strut 19 and the middle strut 23, and a side glass 27 is placed forward between the middle strut 23 and the rear strut 25. The rear glass 28 is supported between the left and right rear columns 25, 25 so as to be openable and closable upward.
[0016]
The top of each of the support columns 19, 23, 25 is covered with a roof 29. The front strut 19 is composed of a hollow frame member bent in a “<” shape in a side view and a front view, and the upper end portion, the bent portion, and the lower end portion (intersection of the lower frame 18). The bar-shaped hand catcher 30 for getting on and off is fixed along the outer front of the front support 19 obliquely forward. The bent portion is connected by a plate member 31 between the front support column 19 and the hand catcher 30, and a winker lamp is attached to the plate member 31. Thereby, the intensity | strength of the front support | pillar 19 can be improved, without impairing the visibility of the cabin 2 by the said blinker lamp.
[0017]
Further, the side glass 27 between the middle support post 23 and the rear support post 25 is formed of a curved glass continuous on the back surface, and is configured to support the hinges 33, 33 provided on the rear support post 25 so as to be openable and closable forward. It has become. Further, as shown in FIG. 5, the rear glass 28 is provided with a bar-shaped rear glass opening / closing hand catcher 35 on the left and right sides, and a damper 36 is attached between the hand catcher 35 and the rear column 25. It has become. As a result, compared to a configuration in which the hand catcher 35 and the damper 36 are separately mounted on the rear glass 28, the number of mounting steps during production and maintenance can be reduced, and the mounting holes of the rear glass 28 can be processed. A decrease in strength can be suppressed. The rear glass opening / closing hand catcher 35 is arranged on the approaching space S1 side in the cabin 2 to be described later so that it can be easily operated when the operator twists the body backward.
[0018]
Next, the configuration in the cabin 2 will be described with reference to FIGS. 1 and 2. The lower surface of the cabin 2 is composed of a front step floor surface 20F on which an accelerator pedal 40 and the like are disposed and a floor mat 41 is spread, and a rear seat floor surface 20R that supports the cockpit 3. Further, the left and right side portions of the seat floor surface 20R are configured such that the inner surface of the fender 22 is erected and covers both the left and right sides of the cockpit 3.
[0019]
In addition, a handle post 44 is erected on the front portion of the step floor surface 20F with a windshield 43 between the bonnet 1 and a steering handle 9 is projected from the upper portion. Further, the steering handle 9 is arranged so that its center position coincides with the left-right virtual center line (XX line in the figure) in the plan view of the cabin 2, in other words, the center position in the left-right width of the floor 20. ing.
[0020]
Further, the cockpit 3 on the seat floor surface 20R is arranged on the left and right virtual center line (XX line), but the left and right center position (YY line) is shown on the left side of the vehicle body in the figure. It is the structure which deviates and arranges. In addition, the center position of this cockpit seat 3 is configured to be arranged at the same distance (W1) from left and right panel members 45 and 46 described later. As a result, a narrow space (hereinafter referred to as the approach side space S1) and a wide space (hereinafter referred to as the separation side space S2) are formed between the right side and left sides of the cockpit 3 between the middle column 23, that is, the cabin 2. It is formed.
[0021]
The approach side space S1 is mainly configured as a relaxation space, and is provided with an armrest arm 3a that is rotatable with respect to the cockpit 3. Further, a left panel that covers the in-car protruding portion of the left fender 22 on the outer side. The member 45 is provided. The left panel member 45 is made of a pressed resin member and includes an upper left panel 45a covering the upper portion of the fender 22 and a lower left panel 45b covering the front lower portion of the fender 22, as shown in FIG. Both 45a and 45b are connected by resin screws. Further, the upper left panel 45a has an accessory placement portion 4a which is divided into three front surfaces and each has a flat portion, a rear cup folder 4b, and a recess 4c inside the vehicle body which can hold a document such as an instruction manual. And is attached to the fender 22 with a resin screw together with the lower left panel 45b.
[0022]
On the other hand, the separation-side space S2 is mainly configured as a vehicle control space as will be described later, and has a configuration in which a right panel member 46 that covers the in-vehicle protruding portion of the right fender 22 is provided. As shown in FIGS. 7 and 8, the right panel member 46 includes an upper right panel 46 a that covers the upper side of the right fender 22 and arranges various operation devices to be described later, and a side panel that covers the side surface of the fender 22 of the cabin 2. 46b and a lower right panel 46c covering the front lower part of the fender 22, and like the left panel member 45, each is made of a press-molded resin member and connected by screws. ing.
[0023]
Further, the upper right panel 46a is formed with an inclined surface 46a2 inclined forward in the front part of the bottom surface 46a1 of the recess, and the guide hole 47 of the traveling speed change lever 7a is formed on the front side of the inclined surface 46a2. A guide hole 48 of a position lever 8a for raising and lowering the work implement 6 is opened inside, and a shift switch 7b and a work implement lift switch 50 are juxtaposed behind the guide holes 47 and 48. The first switch group is arranged.
[0024]
A lower position restriction setting device 51 for restricting the lowering position of the lift arm is disposed in front of the guide hole 48 of the position lever 8a. Further, the bottom surface 46a1 is positioned substantially at the same position as the armrest arm 3a in the front and rear, and a switch case 52 that houses various setting devices that are not frequently used is embedded, and a rubber is attached to the upper lid 53 of the case 52 to attach an operator. It is an elbow rest.
[0025]
Further, the upper surface 46a3 of the upper right panel 46a is arranged in order from the front with a tilling depth setting device 8b, a PTO on / off switch 57, a PTO mode switching device 58, a turning mode / brake pressure setting device 59, and a work implement load control input. A switch switch 60 and an engine rotation control on / off switch 61 are arranged in parallel to form a second switch group, and further, a crush hole 62 for projecting an operation lever when various working machines are attached, and a cigarette lighter 63 are provided. It has become.
[0026]
Here, the mounting structure of the tilling depth setting device 8b will be described on behalf of the various setting devices. As shown in FIG. 9, the tilling depth setting device 8 b is provided with a potentiometer 64 on the lower surface of the upper right panel 46 a and rotating the detection shaft 65 of the potentiometer 64 to change the tilling depth setting position. It has become. Further, a radial groove formed toward the detection shaft 65 is machined on the lower surface of the setting device 8b, and positioning is performed by locking a projection 67 machined into the upper right panal 46a with respect to the groove. It has become.
[0027]
As a result, positioning of the setting device can be ensured and a feeling of clicking at the time of setting can be obtained to improve the operational feeling. Further, by forming the protrusion 67 on the panel member, the number of parts and the production cost can be reduced as compared with a configuration in which a bracket part is separately attached to the panel member 46, for example.
[0028]
In the structure around the cockpit 3 of the tractor T configured as described above, the armrest arm 3a is provided only on one of the left and right sides. Therefore, compared to the conventional structure in which the armrest arm is provided on both the left and right sides, the space in the cabin is reduced. When providing the armrest arm 3a only on one side, the operator's seat 3 is arranged so as to be deviated to the left and right sides, and at least one of them has at least a small article mounting portion 4a and a cup folder 4b. Since a relaxation space is formed and a control space having at least the transmission lever 7a of the vehicle and the operation lever of the working unit, that is, the position lever 8a, is formed on the other side, the operator may be left or right to find the target operation device during work. It is possible to operate without touching juice cups and accessories during the operations of 7, 8 ... It is possible to improve the operability.
[0029]
The shift lever 7a and the position lever 7b are arranged in front of the other armrest arm 3a, and a switch type or dial type operation device group is arranged behind the lever type operation devices 7a and 8a. Therefore, the operator can operate the lever-type operation members 7a and 8a with their arms extended, and can operate the dial-type or switch-type operation members 7b and 8b with their arms bent. Suppressing operability can be improved.
[0030]
Further, if the weight is applied to the operating devices 7, 8,... Or these supporting members with respect to the weight of the vehicle body, the weight of the operator is applied to the left and right sides. The comfort of the cabin 2 is not impaired.
[0031]
Next, the floor mat 41 spread on the step floor 20F will be described with reference to FIG. The floor mat 41 is made of hard rubber, and forms an upper flat portion 65 at the left and right central portions, and an inclined portion 67 is provided between the upper flat portion 65 and the lower flat portions 66 and 66 on both left and right sides. It is continuously formed. A notch 68 through which the handle post 44 is inserted is formed in the front portion of the upper flat portion 65. The inclined portion 67 is formed with large protrusions 69 that form grooves that expand outward in the front-rear direction toward the outside of the vehicle body, and the lower flat surface portion 66 is arranged in a row toward the door opening portion. The row-like projections 70 are formed to form grooves, and the block-like projections 71 for preventing slip are formed on the outside of the row-like projections 70.
[0032]
As a result, the plane portions 65 and 66 are increased as much as possible on the vehicle to improve the comfort for the operator, and when a small item such as a tool, a mobile phone, or equipment in the vehicle is dropped, it is rolled out of the vehicle. While falling can be prevented as much as possible, cleaning water and muddy water can be easily discharged.
[0033]
On the lower surface of the floor mat 41, a sound-absorbing material 72 (right hatched portion in the figure) having substantially the same shape as the mat 41 and made of sponge rubber is attached with an adhesive or double-sided tape, and a plurality of openings A bolt is protruded from the floor 20 to prevent slippage.
[0034]
Thereby, the sound absorbing material 72 or the floor mat 41 can be prevented from being lifted by the protrusion of the bolt, and the sound absorbing material can be prevented from being displaced. As another form of the present invention, the cabin 2 and the cockpit 3 are separately provided for the vehicle, and the cabin 2 is configured to be removable while leaving the cockpit 2 on the vehicle, or provided on the vehicle. It can also be used for a cabin that uses a safety frame.
[Brief description of the drawings]
FIG. 1 is a plan view of a cabin room.
FIG. 2 is a front view of the cabin.
FIG. 3 is an overall side view of the tractor.
FIG. 4 is a perspective view of a cabin frame.
FIG. 5A is a rear view around the rear glass.
(B) Side sectional view around the rear glass.
(C) Plan sectional view around the rear glass.
FIG. 6A is a side view of the left panel.
(B) Plan view of the left panel.
(C) Front view of the left panel.
FIG. 7 is a perspective view of the right panel.
FIG. 8A is a side view of the upper right panel.
(B) Top view of the upper right panel.
(C) Front view of the upper right panel.
FIG. 9 is a cross-sectional view of a switch mounting portion.
FIG. 10A is a plan view of a floor mat.
(B) Left side view of the floor mat.
(C) Right side view of the floor mat.
(D) Front view of the floor mat.
(E) The rear view of a floor mat.
[Brief description of symbols]
DESCRIPTION OF SYMBOLS 1 Mission case 2 Cabin 3 Pilot's seat 4a Small article mounting part 4b Cup holder 5 Transmission 6 Work implement 7a Shift lever 7b Shift switch 8a Position lever 8b Plow depth setting device 9 Steering handle T Tractor 20 Floor 45 Left panel member 46 Right panel Member 50 Shift switch 57 PTO on / off switch

Claims (2)

A tractor in which a transmission case (1) is arranged in the longitudinal direction of the vehicle body, a substantially symmetrical cabin (2) is provided above the case (1), and a cockpit (3) is disposed in the cabin (2). The cockpit (3) is arranged with the left and right virtual center line (YY) of the cockpit (3) displaced from the left and right virtual center line (XX) in plan view of the cabin (2). The narrow approaching space (S1) formed between the cabin (2) and the cockpit (3) is provided with an armrest arm (3a), and the armrest arm (3a) laterally The panel member (45) is provided with a small article placing portion (4a) or a cup holder (4b), and on the other hand, a wide separation space (S2) formed between the cabin (2) and the cockpit (3). the panel member (46) in), shifting of the vehicle (5) and working With operating device of (6) (7a, 7b, 8a, 8b ...), and
The armrest arm (3a) is configured to be attached to the cockpit (3) side, provided in the narrow approach side space (S1), and not provided in the wide separation side space (S2). To tractor . A rear glass (28) that can be freely opened and closed is provided at the rear part of the cabin (2), and a rear glass opening and closing hand catcher (35) that is formed in a bar shape in the vertical direction is provided on one side of the rear glass (28). The tractor according to claim 1.

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