JPH11285301A - Sulky tending machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky tending machine capable of simplifying the structure, widening the visibility range of the lower front and improving the runnability, operating efficiency and work efficiency by forming the front of a machine body frame into the shape of a forwardly descending tilt. SOLUTION: This sulky tending machine is obtained by forming the front of a machine body frame 1 into the shape of a forwardly descending tilt. Furthermore, the machine body frame 1 is formed from a front frame 1a and a rear frame 1b into a nearly chevron shape when viewed from a lateral face and a working machine is hung and installed under a connecting part of the front frame 1a to the rear frame 1b. The third power transmission shaft 9b and the first power transmission shaft 9a are respectively arranged in the front frame 1a and the rear frame 1b. Furthermore, a power is preferably transmitted through a universal joint comprising the third power transmission shaft 9b and the first power transmission shaft 9a arranged in the connecting part of the front frame 1a to the rear frame 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a three-wheeled riding management machine having a front one wheel at a front portion and two rear wheels at a rear portion.

[0002]

2. Description of the Related Art Conventionally, an airframe is disposed in the front-rear direction, one front wheel serving as a steering wheel is arranged at a front portion of the airframe, and two rear wheels are arranged at a rear portion to form a three-wheel drive system. ,
Further, a work management machine is mounted on the abdomen between the front wheel and the rear wheel using a work machine mounting device, and is mounted on a driver seat mounted on a rear portion of the body frame to perform management work. Is known. In this riding management machine, it is necessary to raise the work machine so as not to hit the crop cultivated on the ridge or ridge when entering or leaving the field, when crossing a ridge, or when turning on a headland. The aircraft frame was placed as high as possible to increase the climb height.

[0003]

However, even if the machine frame is arranged as high as possible above and the working machine suspended from the abdomen is lifted high, the machine frame is arranged horizontally. From the operator in the driver's seat, the fuselage frame protrudes forward, obstructing the front and lower visibility, making it difficult to see the running surface on which the front wheels run.
The turning start position at the end of the field is difficult to adjust, the state of the field where the management work is performed is difficult to understand, and the operability is poor.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a passenger management machine in which a front wheel is arranged in a lower front part of a body frame, a rear wheel is arranged in a rear part, a driver's seat is arranged in a rear upper part, and a work machine is hung up and down on an abdomen, The portion is formed in a downwardly inclined shape. Further, the machine frame is formed in a substantially “H” shape in side view with the front frame 1a and the rear frame 1b, and a working machine is suspended and arranged below a connecting portion between the front frame 1a and the rear frame 1b. A third power transmission shaft 9b and a first power transmission shaft 9a are disposed in the front frame 1a and the rear frame 1b, respectively, and the third power transmission shaft 9b and the first power transmission shaft 9a are connected to the front frame 1a and the rear The power is transmitted via a universal joint arranged at a connection portion of the frame 1b.

[0005]

Next, an embodiment of the present invention will be described. FIG. 1 is an overall side view of a passenger management machine in a state in which a middle tillage rotary is mounted on the abdomen and lowered, FIG. 2 is a partial side view of a passenger management machine having a body frame of the present invention, and FIG. It is a side sectional view of a body frame.

First, the overall structure of a three-wheeled passenger management machine according to the present invention will be described with reference to FIGS. In the three-wheeled passenger management machine, an operating unit B is disposed at a rear portion of the body frame 1 extending in the front-rear direction, an engine 6 is mounted at a rear end of the body frame 1, and a traveling speed is changed by a transmission case 51. Rear axle case 4 arranged at the lower part of transmission case 51 and rear wheel 3.
3 is driven.

Power is transmitted from the transmission case 51 to the front wheels 2 via a power transmission shaft disposed in the body frame 1, and a front case 7 is provided at a front portion of the body frame 1. A front wheel drive case 8 is attached to the lower part of the lower part 7 so as to be rotatable left and right about the vertical direction as an axis, and the front wheel drive case 8 can support and drive one front wheel 2 to constitute a three-wheel drive vehicle. . The upper part of the front case 7 is covered with a cover 30.

The engine 6 is covered by a bonnet 10, and a transmission case 51 and a vehicle body cover 11 for covering the rear wheel 3 are arranged in front of the hood 10. 12 is placed,
A steering column 13 is provided upright on the body frame 1 in front of the driver's seat 12. The steering column 1
A steering handle 14 projects above the upper part of the steering column 3, an accelerator lever (not shown) projects from the right side of the steering column 13, and a side latch pedal 16 is arranged below the steering column 13. .

A work implement mounting device 29 is disposed on the abdomen between the front wheel 2 and the rear wheel 3. The work machine mounting device 2
9 and 9, a pair of left and right brackets 18 project downward from the front lower part of the body frame 1 (rear position of the front case 7) as shown in FIGS.
Support shafts 169 and 170 are mounted on the upper and lower sides of 8.18. Upper links 19, 19 are provided at both ends of the upper support shaft 169.
Are pivotally supported, and the lower link 20, 20 front is pivotally supported at both ends of the lower support shaft 170. The upper link 19
19 are provided at intervals substantially equal to the left and right widths of the body frame 1. The upper link 19 can be raised and rotated until it is located on the side of the body frame 1, so that the working machine 26 can be lifted high. Furthermore, upper link 1
9 and the lower link 20 are connected to each other by a connecting arm 160 to form a parallel link.

A base of an elevating cylinder 22 is pivotally supported by the brackets 18. A rod pin of the elevating cylinder 22 has a connecting pin 163 connecting an intermediate part of the lower link 20 and the lower end of the connecting arm 160. And the lifting cylinder 22 is interposed at the center of the parallel link in the left-right direction.

A hitch 21 as a mounting member is pivotally supported at the rear end of the upper link 19 and the rear end of the lower link 20, and a work machine 26 is locked to the hitch 21. As shown in FIG. 1, a bar-shaped toolbar 23 extends in the left-right direction from the hitch 21, and a plurality of working machines 26 can be attached to the center portion and the left and right side portions of the toolbar 23 so that the mounting positions can be changed. In this way, multiple management tasks can be performed. still,
As the working machine 26, a rotary cultivator, a rake-shaped rake for removing weeds, and the like can be arranged.

A power input case 36 is fixed at the center of the toolbar 23 in the left-right direction, and the transmission case 5 is mounted on an input shaft of the power input case 36.
Power is transmitted from a PTO shaft 35 projecting forward from the lower part 1 via a universal joint and a PTO transmission shaft 37. From the power input case 36, the power shaft 3
The power shafts 38 are protruded, and the power shaft 38 is inserted into the upper part of the chain case 25 of each rotary cultivator as the work equipment 26, and power is transmitted to the rotary cultivator.

Further, a locking body 44 (FIG. 2) for locking to the body frame 1 side is fixed to the rear surface of the hitch 21. A stay is provided at a lower portion of the body frame 1 immediately before the steering column 13. 140 and 140 are protruded downward, and the lower ends of the stays 140
The upper end of the pivot arm 142 is pivotally supported,
A locking pin 141 is axially supported at the other end of the projection 2 so as to protrude outward. An operating rod 143 is provided at one end of the locking pin 141.
Is pivotally supported, and the rear end of the operating rod 143 is slidably supported on the lower side of the steering column 13 in a substantially forward and backward direction.

Then, the work machine 26 is raised to the uppermost position, and the operating rod 143 is slid forward, whereby the rotating arm 142 is rotated downward, and the locking pin 141 is When moving downward, the locking body 44 and the locking pin 141 are engaged, and when moving with the work implement 26 being disposed on the abdomen, the work implement 26 can be reliably held at the highest position. Like that.

Next, the fuselage frame 1 of the present invention will be described with reference to FIGS. The body frame 1
The front frame 1a and the rear frame 1b are formed in a tubular shape that is long in the front-rear direction, and are connected to the front frame 1a and the rear frame 1b in a “H” shape in side view at a substantially central position in the front-rear direction where the steering column 13 is erected. The work machine 26 is positioned below the connecting portion, and the engine frame 1c is further fixed to the rear end of the rear frame 1b to form the body frame 1.

The engine frame 1c is disposed horizontally, and its front end is fixed to the rear frame 1b via a mounting plate 31. The engine 6 is mounted on the rear upper portion of the engine frame 1c. A transmission case 51 is placed in front of the transmission case 51. Rear axle case 4 projecting laterally from the transmission case 51
Are supported on a side frame 32 fixed to the side surface of the engine frame 1c. Furthermore, engine frame 1
Frames 33 are erected above the front and rear middle part of the c side, a gate-shaped guide frame 34 is fixed on the frames 33, 33, and a canopy 52 is mounted above the driver's seat 12.

The rear frame 1b is formed in a U-shape whose front lower part is open in a sectional view, and the rear end of the rear frame 1b is located immediately in front of the transmission case 51. In the rear frame 1b, an output shaft protruding forward from the upper part of the transmission case 51 is connected to a first power transmission shaft 9a via a universal joint. Placed in
Further, from the lower part of the transmission case 51, the PTO
The shaft 35 is projected. Power is transmitted to the working machine 26 via a universal joint and a PTO transmission shaft 37 to the PTO shaft 35, and the PTO transmission shaft 37 is configured to be extendable and contractable when the working machine 26 is moved up and down. The transmission of power is possible while preventing the rear frame 1b from being retracted, and when it is raised, it is housed in the rear frame 1b formed in a U-shape.

Further, steps (not shown) are formed on the left and right sides of the lower portion of the rear frame 1b, and a frame body 41 formed by bending a pipe body is provided on an outer peripheral portion thereof for reinforcement. I can do it. An armrest 50 is provided upright in front of the rear portion of the frame 41.

A steering column 13 is provided upright at a position where the front upper portion of the rear frame 1b is connected to the rear portion of the front frame 1a, and the front frame 1a projects forward and downward from the lower portion of the steering column 13. The upper end side of the front case 7 at the front of the frame 1a is lowered so that the operator on the driver's seat 12 has a lower frontward view.

Further, since the front frame 1a is arranged so as to be inclined forward and downward, the front frame 1a is raised, and when the work machine 26 is raised to the highest position, "F" is seen from the side.
The work machine 26 is raised in the recessed portion of the machine frame 1 formed in the shape of a letter, and the position of the lower end of the work machine 26 is also increased. This prevents the lower end of 26 from hitting the ground.

The front frame 1a is formed in a cylindrical shape, and the front portion of the first power transmission shaft 9a is connected to the rear portion of the second power transmission shaft 9c via a universal joint. The shaft 9c is rotatably supported inside the connection between the front frame 1a and the rear frame 1b, and has universal joints on both front and rear sides thereof. The front portion of the second power transmission shaft 9c is connected to the rear portion of the third power transmission shaft 9b via a universal joint, and the third power transmission shaft 9b is housed in the front frame 1a. The front frame 1 a and the rear frame 1 b are used as a case of a transmission shaft for transmitting power to the front case 7, and the front wheels 2 are driven via a front wheel drive case 8.

Further, a turning shaft 43 for steering is supported in the front frame 1a, and a rear portion of the turning shaft 43 for steering is connected to the steering handle 1 via a joint shaft 46.
4 is connected to the lower portion of the operating shaft 45 of the front wheel 4 and rotates the steering handle 14 so that the front wheels 2 and the front wheel drive case 8 are rotated via the rotating shafts 45 and 43 and the like.
Is steered and turned.

[0023]

As described above, the present invention has the following advantages. That is, as in claim 1, in the passenger management machine in which a front wheel is arranged at a lower front portion of a body frame arranged substantially in the front-rear direction, a rear wheel is arranged at a rear portion, and a work machine is hung up and down on an abdomen so as to be able to move up and down. By forming the front of the fuselage frame with a forward-downward slope, the operator's view on the driver's seat can be widened forward and downward, and the aircraft can travel while checking the front in the direction of travel, turning the field edge The position can be easily determined, and the vehicle can travel while performing acceleration / deceleration adjustment or the like in accordance with the state of the field, and can perform optimal work.

Further, as in claim 2, the body frame is formed in a substantially "H" shape in a side view by the front frame 1a and the rear frame 1b, and a lower portion of a connecting portion between the front frame 1a and the rear frame 1b is formed. The work machine is suspended from the ridge, so the highest position of the work machine is raised, and when turning on a headland, etc., the work machine does not contact the crop on the ridge and damage the crop, and work when climbing over the ridge The problem that the machine hits the ridge and collapses is eliminated.

Further, the third power transmission shaft 9 is provided in the front frame 1a and the rear frame 1b, respectively.
b and the first power transmission shaft 9a.
b and the first power transmission shaft 9a transmit power via a universal joint disposed at a connection portion between the front frame 1a and the rear frame 1b, so that power is transmitted from the transmission shaft at the lower position to the transmission shaft at the upper position. It is not necessary to use a chain or a gear when transmitting power, and power can be easily transmitted with a simple configuration.

[Brief description of the drawings]

FIG. 1 is an overall side view of a passenger management machine in a state where a middle tillage rotary is attached to an abdomen and lowered.

FIG. 2 is a partial side view of a passenger management machine having the machine frame of the present invention.

FIG. 3 is a side sectional view of the body frame of the riding management work machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 2 Front wheel 3 Rear wheel 9a / 9b / 9c Power transmission shaft 12 Driver's seat 26 Work machine

Claims (3)

[Claims] 1. A passenger management machine in which a front wheel is arranged in a lower front part of a body frame, a rear wheel is arranged in a rear part, a driver's seat is arranged in a rear upper part, and a working machine is hung up and down on an abdomen. A passenger management machine characterized in that a front portion of a body frame is formed to be inclined forward and downward. 2. A passenger management machine in which a front wheel is arranged at a lower front part of a body frame, a rear wheel is arranged at a rear part, a driver's seat is arranged at a rear upper part, and a working machine is hung up and down on an abdomen. The machine body frame is formed in a substantially "H" shape in a side view by a front frame 1a and a rear frame 1b, and a working machine is suspended and arranged below a connecting portion between the front frame 1a and the rear frame 1b. Passenger management machine. 3. The front frame 1a and the rear frame 1
b, the third power transmission shaft 9b and the first power transmission shaft 9 respectively.
a, the third power transmission shaft 9b and the first power transmission shaft 9
3. The passenger management machine according to claim 2, wherein a is transmitted through a universal joint disposed at a connecting portion between the front frame 1a and the rear frame 1b.