JPH10304709A - Stands with wheels in foldable agricultural work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide stands attachably/detachably at the both sides of a center part in a state where left and right work machine parts are folded by permitting the both left and right work machine parts to be foldable to a center part sides as against the center part. SOLUTION: An agricultural work machine is tri-seated into the center part and the left and right work machine parts, the left and right end parts of the center part and the inner end parts of the left and right work machine parts are respectively connected so as to be rotatable by 180 deg. by a rotary fulcrum and the stands 23 with wheels are arranged in the both left and right end parts of the center part so as to be attachable/detachable in a state where the left and right work machine parts are folded. In the stand with the wheels, parts of stand members are put through the both end parts of a pipe-shaped center part frame 24 penetrating in a left and right length direction so as to be restricted by putting through restricting pins 25 in the center part and also wear plates 26 for regulating the rotation of the stand members in a front and rear direction are projected from both left and right end parts of the center part to side parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a work part on both left and right sides of a center part which can be folded toward the center part.
The present invention relates to a stand with wheels for a folding agricultural working machine, in which stands are detachably provided on both sides of a central part in a state where left and right working machine parts are folded.

[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 both left and right sides from the center portion can be folded toward the center portion. In order to attach the stand with wheels (casters) to the agricultural working machine, a stand attachment portion is provided in front of the frame so that the stand is attached to and detached from the frame regardless of the position of the machine center of gravity. In some cases, a total of four stands are provided on the front, rear, left, and right sides of the agricultural work machine.

[0003]

In the case of the above-mentioned stand of the conventional agricultural working machine, in the case of the former, the front and rear length of the stand is long and large, and the weight is heavy. In the latter case, there is also a problem that four stands are required, and the attaching / detaching operation is troublesome.

An object of the present invention is to provide a stand with wheels for a folding farm working machine, which can reduce the weight of the stand, can be easily attached and detached, and prevents the rotation of the stand member in the front-rear direction to increase the strength. With the goal.

[0005]

In order to achieve the above object, the present invention provides: At the rear of the tractor, the central part in the longitudinal direction of the agricultural working machine is mounted 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 part of the agricultural working machine. The working machine portion extending to the left and right sides from the portion can be folded toward the center portion side, and the farm working machine is divided into a center portion and left and right working machine portions into three parts. The left end and the inner end of the left and right working machine parts are connected by a rotation fulcrum so as to be able to rotate approximately 180 °, and the left and right working machine parts are folded, and wheels are provided on both left and right ends of the central part. It is characterized in that the attached stand is detachably arranged.

B. The stand with wheels is engaged with both ends of a pipe-shaped central frame that penetrates the central portion in the left-right length direction, and a part of the stand member is fitted and locked by inserting a locking pin, It is characterized in that a contact plate for restricting the rotation of the stand member in the front-rear direction is projected laterally from both left and right ends of the central portion.

[0007]

With the above construction, the stand with wheels of the folding agricultural machine according to the present invention can reduce the weight of the stand and can be easily attached to and detached from the central portion. Further, the rotation of the stand member in the front-rear direction is prevented by the backing plate, and the strength is increased.

[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 3 is covered with a shield cover 15 supported by the main body frame, and at the rear end of the shield cover 15, the upper end of an apron 16 pivotally supporting a leveler (flat plate) 17 at the rear end position. It 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 rotary arm 20 which is rotatably supported by a shaft 20b so as to be rotatable in the left-right direction and is bent in a V-shape is provided between the transmission arm 8 and an intermediate portion of the rotary arm 20.
The work machine portion 5L is rotated between the work 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 stands 2 with wheels (casters) are located at the positions of the support frames 10 at the left and right ends of the central part 4.
3 is provided detachably. In addition, a residual tillage (at the ridge) processing device is provided at the lower front side of each of the chain transmission cases 9.

The stand 23 with wheels (casters)
The connecting portions 23a projecting laterally from the upper portion of the stand member are fitted into the opening portions at both ends of the pipe-shaped central frame 24 that penetrates the central portion 4 in the left-right length direction. From the pin hole 24a provided to the connecting portion 23a.
The locking pin 25 is inserted into the pin hole formed in the hole and locked. The rotation of the stand member in the front-rear direction
It is regulated by a backing plate 26 projecting laterally from the support frame 10.

[0015]

As described above, according to the stand with wheels (casters) of the folding agricultural working machine of the present invention, the following effects can be obtained.

[0016] The agricultural working machine is divided into a central part and left and right working machine parts, and the left and right ends of the central part and the inner ends of the left and right working machine parts are substantially 180 degrees by a rotation fulcrum.
° Rotatably connected, with the left and right working machine parts folded, a wheeled stand is removably installed at the left and right side edges of the central part, so even if the weight of the stand is reduced, the agricultural working machine can be used. Sufficient support is possible, and attachment / detachment to / from the central portion can be easily performed.

[0017] The stand with wheels is such that a part of the stand member is fitted into both ends of a pipe-shaped central frame penetrating the central portion in the left-right length direction, and a locking pin is inserted therethrough to lock. Since the contact plate for restricting the rotation of the stand member in the front-rear direction is projected laterally from both left and right ends of the central portion, the load in the front-rear rotation direction of the stand member is received by the contact plate in a wide range, Is reliably prevented from rotating in the front-rear direction, and the strength of the stand can be increased.

[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 showing an arrangement of a stand with wheels.

FIG. 11 is a perspective view showing attachment and detachment of a wheeled stand with respect to a central 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 surface of part 6 Rotating shaft (rotation fulcrum) 7, 7a Transmission shaft 8 Transmission frame 9 Chain transmission case 10 Support frame 11 Rotary shaft 12 Crushed soil / scraping claw 13 Crushed soil / scraping rotor 14 Dog clutch 15 Shield cover 16 Apron Reference Signs List 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 (casters) 23a Connecting part 24 Pipe-shaped central frame 24a Pin hole 25 Lock pin 26 Contact Plate T Tractor tire

Claims (2)

[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 to the left and right sides from the center portion is a farm working machine that can be folded toward the center portion side, respectively. The farm working machine is divided into a central portion and left and right working machine portions by three. The left and right ends of the central portion and the inner ends of the left and right working machine portions are connected to each other by a rotation fulcrum so as to be substantially 180 ° rotatable. A stand with wheels for a folding agricultural machine, wherein stands with wheels are detachably disposed at both ends. 2. A stand with wheels, wherein a locking pin is inserted by inserting a part of a stand member into both ends of a pipe-shaped central frame penetrating the central portion in the left-right length direction. 2. The wheel according to claim 1, wherein a backing plate that locks and restricts rotation of the stand member in the front-rear direction is laterally protruded from both left and right ends of the central portion. With stand.