JPH10295111A - Driving method for folding farm working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve drivability by mounting the center part of a longitudinal direction to the rear part of a tractor through a three-point link hitch mechanism in the state of being vertically movable to fold working machine parts extended to both right/left sides with respect to the center part respectively to the side of the center part. SOLUTION: The farm working machine is divided into the three parts of a center part 4 and left and right working machine parts 5L and 5R and a chain transmission case 9 is provided for each of these divided part 4 and parts 5L and 5R to enable driving a working part to switch to the form of working by all of the part 4 and the parts 5L and 5R, the form of working only by the part 4 by folding the parts 5L and 5R with respect to the part 4 or the form of working by one of the parts 4, 5L and 5R by folding one of the parts 5L and 5R with respect to the part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working machine portion having a longitudinal central portion mounted on a rear portion of a tractor via a three-point link hitch mechanism so as to be able to move up and down, and extending to the left and right sides with respect to the central portion. And a driving method of a foldable agricultural working machine, each of which is foldable toward a central portion.

[0002]

2. Description of the Related Art Conventionally, a central portion in the longitudinal direction of an agricultural work machine is mounted on a rear portion of a tractor via a three-point link hitch mechanism so as to be able to move up and down, and power is transmitted from the tractor to the central portion of the agricultural work machine. 2. Description of the Related Art There is a well-known agricultural working machine in which a working machine portion extending to the left and right sides from the center portion can be folded toward the center portion in order to shorten the lateral length of the machine body.

[0003] As a method of driving the central portion and the left and right working machine portions, a chain transmission case is provided at one end on one side of the left and right working machine portions, and when the left and right working machine portions are brought into a working state, The lower working shaft driven by the chain transmission case drives all the working shafts of the central portion and the left and right working machine portions.

[0004]

In the case of the conventional agricultural working machine described above, all the working parts are driven by one chain transmission case at the end of the working part. However, there is a problem that the working width of the left and right working machine parts including the central part cannot be selectively changed because the working unit needs to be deployed.

According to the present invention, each of the three divided working parts can be driven by the respective chain transmission case, so that the central part and the left and right working machine parts are all, only the central part, and the central part and the left and right working machine parts. An object of the present invention is to provide a method for driving a folding agricultural machine capable of selectively switching a work mode.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a tractor having a longitudinally central portion mounted on a rear part of a tractor via a three-point link hitch mechanism. In the agricultural working machine, the power is transmitted to the central part of the agricultural working machine from the central working part, and the working machine part extending to the left and right sides from the central part with respect to the central part is foldable toward the central part. The machine is divided into a central part and left and right working machine parts, and a chain transmission case is provided for each of the divided central part and left and right working machine parts so that the working part can be driven. A form in which all the machine parts are worked, a form in which the left and right working machine parts are folded with respect to the central part and a work only with the central part, and one in which the left and right work machine parts are folded with respect to the central part In is characterized in that as is switched to the mode in which to work with either of the central portion and the left and right working machine parts.

[0007]

According to the above-mentioned means, the driving method of the folding agricultural working machine according to the present invention is adapted to work on the central portion and the entire left and right working machine portions according to the shape of the field, etc. Can be selected to work by folding only the central part and working with only the left and right working machine parts with respect to the central part and working with either the central part and the left and right working machine parts. It also facilitates entry and exit to a specially shaped field.

[0008]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In the figure, reference numeral 1 indicates that the length in the left-right direction is long (3770 m in this embodiment).
m) It is a scraping halo having a crushing and scraping function. Although not shown, a connecting portion 2 for connecting to a tractor, which is not shown, is connected to a well-known three-point link hitch mechanism including a top link and a lower link of the tractor. 1 is attached to the rear of the tractor so as to be able to move up and down. Also, the input shaft 3 is provided from the PTO shaft of the tractor to the transmission gear box 3 provided at the front center of the substitute harrow 1 via a universal joint, a transmission shaft and the like.
Power is transmitted via a.

The scratching harrow 1 has a central portion 4 (length = 19).
00 mm) and left and right working machine parts 5L, 5R (length = 9 each)
30 mm), and the left and right ends of the central portion 4 and the inner ends of the left and right working machine portions 5L and 5R are connected by rotating shafts (rotation fulcrums) 6 and 6 so as to be able to rotate substantially 180 °. The back surface 4a of the central portion 4 and the left and right working machine portions 5
The back surface 5La, 5Ra of L, 5R is foldable so as to overlap. As shown in the drawing, the length of the left and right working machine parts 5L and 5R is approximately half the length of the central part 4. Since the working machine parts 5L and 5R are symmetrical and have the same configuration, only one working machine part 5L will be described.

Transmission frames 8 and 8a are provided on both left and right sides of the gear box 3 and serve as a main body frame and include transmission shafts 7 and 7a. From the transmission frames 8 and 8a, the chain transmission case 9 is located at the rear of the tractor tire T in the central portion 4 and at the outer end of the working machine portions 5L and 5R.
Is hanging. A rotary shaft 11 is suspended between the lower end of each of the chain transmission cases 9 and the lower end of a support frame 10 vertically suspended from the transmission frames 8, 8a so as to face the chain transmission case 9. On the circumference of the rotary shaft 11, a large number of soil crushing / scraping claws 12 are attached, and
The data 13 is constituted.

A dog clutch 14 is provided at a portion where the shaft ends of the transmission shafts 7 and 7a face each other.
The dog clutch 14 is connected when the whole scratching harrow 1 is in the working state, and the dog clutch 14 is turned when the left and right working machine parts 5L, 5R are turned around the rotation shaft 6 and folded on the central part 4. Is disconnected. Soil crushing and scraping rotor 1
The upper part of the apron 3 is covered with a shield cover 15 supported by the main body frame, and a rear end of the shield cover 15 has an apron 1 pivotally supporting a leveler 17 at a rear end position.
The upper end of 6 is pivotally mounted so as to be rotatable vertically. The folded opposing portions of the leveler 17 are connected by a hinge 18 that rotates about an axis substantially equal to the axis of the rotating shaft 6. Further, the leveler 17 can be displaced between a leveling position for leveling the soil and a soil collecting position for scraping the soil.

A guide plate 19 having a guide groove 19a is fixedly mounted on the folding and rotating portion of the working machine portion 5L. A guide pin 20a which is inserted into the guide groove 19a at one end is provided above the guide plate 19. Having the other end in the central part 4
A link-shaped rotary arm 20 that is rotatably supported in the left and right direction by a shaft 20b and that is bent in a V-shape is provided on a side of the rotary arm 20, and a hydraulic cylinder 21 is interposed between an intermediate portion of the rotary arm 20 and the transmission frame 8. The working machine portion 5L is rotated between the working position and the folded position by the expansion and contraction operation of the hydraulic cylinder 21. When the working machine portion 5L is in the working position, it is locked by the lock device 22.

When the left and right working machine parts 5L and 5R are folded on the central part 4, the stand with wheels 23 is detachably provided on the support frames 10 at the left and right ends of the central part 4. In addition, a residual tillage treatment device is provided below each of the chain transmission cases 9.

In the substitute harrow 1 having such a configuration, as shown in FIGS. 10 to 13, the work is performed by the central portion 4 and all of the left and right working machine portions 5L and 5R (FIG. 1).
0), a mode in which the left and right working machine parts 5L and 5R are folded with respect to the central part 4 and work is performed only with the central part 4 (FIG. 11).
A mode in which the right working machine portion 5R is folded with respect to the central portion 4 and work is performed by the center portion 4 and the left working machine portion 5L (FIG. 1)
2) Four types of work (FIG. 13) in which the left working machine portion 5L is folded with respect to the center portion 4 and the center working portion 4 and the right working machine portion 5R are operated can be selected and executed.

[0015]

As described above, according to the driving method of the folding agricultural working machine of the present invention, the following effects can be obtained by the above means.

According to the shape of the field, the central part and the left and right working machine parts are all worked, the left and right working machine parts are folded with respect to the central part, and the working is performed only at the central part. One of the left and right working machine parts can be folded to select the central part and one of the left and right working machine parts to work.

In addition, it is possible to enter and exit a field having a special shape, so that the working range can be expanded.

[Brief description of the drawings]

FIG. 1 is a schematic rear view of an entire folding-type scrap harrow according to the present invention.

FIG. 2 is a schematic side view from the direction A in FIG. 1;

FIG. 3 is a schematic side view showing a state in which a substitute harrow is folded.

FIG. 4 is a schematic plan view from the direction B in FIG. 3;

FIG. 5 is a partial plan view of a substitute harrow according to the present invention.

FIG. 6 is a side view showing a state in which a substitute harrow is folded.

FIG. 7 is a partial plan view of a substitute harrow.

FIG. 8 is a partial plan view of the folding mechanism.

FIG. 9 is a partial plan view in a folded state.

FIG. 10 is a plan view of a form in which a substitute harrow works on a central portion and all of the left and right working machine portions.

FIG. 11 is a plan view of a form in which left and right working machine parts are folded with respect to the central part and work is performed only at the central part.

FIG. 12 is a plan view of a form in which the right working machine portion is folded with respect to the center portion and work is performed by the center portion and the left working machine portion.

FIG. 13 is a plan view of a form in which the left working machine portion is folded with respect to the center portion and work is performed by the center portion and the right working machine portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Alternating harrow 2 Connecting part to tractor 3 Speed change gearbox 3a Input shaft 4 Central portion of altering harrow 4a Back of central portion 5L Left working machine portion 5R Right working machine portion 5La Back of left working machine portion 5Ra Right working machine Back of part 6 Rotating shaft (rotating fulcrum) 7, 7a Transmission shaft 8 Transmission frame 9 Chain transmission case 10 Supporting frame 11 Rotary shaft 12 Crushed soil / scraping claw 13 Crushed soil / scraping rotor 14 Dog clutch 15 Shield cover 16 Apron 17 Leveler 18 Hinge 19 Guide plate 19a Guide groove 20 Rotating arm 20a Guide pin 20b Shaft 21 Hydraulic cylinder 22 Locking device 23 Stand with wheels T Tractor tire

Claims (1)

[Claims] 1. A longitudinally central portion of a farming machine is mounted on a rear portion of a tractor via a three-point link hitch mechanism so as to be able to move up and down, and power is transmitted from the tractor to a central portion of the farming machine. On the other hand, a working machine portion extending from the central portion to both the left and right sides is an agricultural working machine that is foldable toward the center portion, respectively. The agricultural working machine is divided into a central portion and left and right working machine portions by three. A chain transmission case is provided in each of the divided central part and the left and right working machine parts so that the working part can be driven, and the center part and the left and right working machine parts are all worked. A form in which the working machine part is folded and work is performed only at the center part, and a form in which one of the left and right work machine parts is folded with respect to the center part and work is performed at the center part and one of the left and right work machine parts The driving method of folding agricultural machine is characterized in that as is switched to and.