JPS60232018A - Digging machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field of the invention] The present invention relates to, for example, digging up crops such as underground tubers,
and relating to a harvesting machine.

[Technical deficiencies in inventions and their problems]

Conventionally, various structures have been proposed for this type of excavator, but for example, an excavator with a structure in which a conveyor for shaking off is connected to the rear end of the excavating body such as a tip metal. The harvested products transported by the conveyor fall onto the unleveled ground that has been swollen and softened by the excavation body, so it takes a lot of work to pick up and collect the harvested products. When harvesting large and small crops such as these, there are problems such as small-diameter crops falling into depressions in unleveled land and being difficult to pick up.

Therefore, it is conceivable to install leveling rollers rotatably in series so that the harvested material can be discharged onto the surface after leveling the ground. However, in this case, the leveling rollers support the entire weight of the main body frame. Therefore, there is a problem in that the rotation performance of the soil leveling roller is inhibited, and the rotation of the soil leveling roller becomes unsmooth. In addition, when driving the leveling rollers at this time, if the driving speed of the leveling rollers is faster than the digging speed, a back-up effect will occur, putting strain on the leveling rollers and other equipment, and vice versa. When the moving speed is slow, this acts as a brake, causing an increase in traction resistance.

Therefore, supporting the load of the main body frame and leveling the ground after excavation are divided into two members, and a grounding body is installed in front to support the load, and the ground leveling is done at the rear of the grounding body. We proposed a structure in which a roller is provided separately and rotates to level the ground, but with this structure, the rotatability of the leveling roller is not impaired, and the leveling roller expands and softens while reducing traction resistance. The soil can be leveled in an orderly manner, but if the grounding body is adjusted up and down depending on the working conditions, the height of the leveling roller must be adjusted each time according to the set position of the grounding body. There are problems in that it requires many troublesome steps and becomes mechanically complex.

(Object of the Invention) The present invention has been made in view of the above points, and the grounding body and the drive leveling roller are mutually related in a predetermined vertical relationship, and the height of the grounding body is adjusted to simultaneously drive the leveling of the ground. The purpose of this roller is to make the height of the roller adjustable, to facilitate handling, to simplify the mechanism, and to enable easy and orderly leveling of expanded and softened soil.

[Summary of the Invention] The present invention comprises an excavation body, a main body frame in which a conveyor is connected to the rear end of the excavation body so as to be inclined rearwards, and a height adjustable structure in the lower part of the main body frame. It is characterized by comprising a grounding body that is attached to the grounding body to support the load of the main body frame, and a drive leveling roller that is rotatably provided at the rear upper part of the grounding body and leveling out the expansion and softness caused by the excavation body. This greatly improves work efficiency.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 4, reference numeral 1 denotes a main body frame, and main frame side plates 2 serving as main frame frames are attached to opposite ends of the main frame 1, and the front side between the main frame side plates 2 is A tip metal 3 as an excavation body is protruded from the lower part, and a conveyor 4 for one swing is disposed at the rear end of the tip metal 3 so as to be inclined rearward and move freely. This competition 174 consists of a driven wheel 5 rotatably mounted near the rear end of the tip 3, and a drive shaft rotatably mounted horizontally at the rear upper part of the main frame side plate 2 via a bearing body A. An endless rotating body 10, which is constructed by supporting a large number of horizontal rods 9 at predetermined intervals between opposing endless chains 8, is suspended between the driving wheels 7 of 6 and the endless rotating body 10 so as to be freely rotating. There is.

A sprocket 11 is fixed to one end of the drive shaft 6 of the conveyor 4, and a sprocket 11 is fixed to the sprocket 11 and the output shaft 13 of the transmission 12.
An endless chain 15 is rotatably suspended between the
The transmission 12 is attached to the main body frame 1.

Next, attach the support shaft 16 to the lower front end of the main frame side plates 2 on both sides.
The distal end of the support arm 17 is rotatably supported vertically via the support arm 17, and the front end of a grounding body 18 such as a sled body or a grounding ring is integrally fixed to the rear end of the support arm 17. The lower end of the support rod 20 that suspends and supports the grounding body 18 is attached to the shaft 21 on the piece 19.
The rear end of the connecting rod 23 is rotatably connected to the upper part of this support rod 20 via a shaft 22, and the interlocking lateral It is attached to both ends of the rod 24, and the interlocking horizontal rod 24 is rotatably suspended horizontally on bearing bodies 25 protruding from the lower ends of the main frame side plates 2 on both sides. Further, the lower end of the operating handle 27 is pivoted to one end of the rod 24 via the piece 26, and the upper part of the operating handle 27 is connected to the main frame side plate on the one side.
This stopper body 28 is formed with a plurality of locking recesses 29 in which the operating handle 27 selectively engages and disengages in the lengthwise direction of the inner part. A spring 30 for holding the operating handle 27 in the set position is stretched between the main frame side plate 2 on one side and the main frame side plate 2 on the other side.

Furthermore, support frames 31 are integrally erected on the rear parts of the grounding bodies 18 on both sides, and guide elongated holes 32 that are long in the vertical direction are bored in the upper parts of the support frames 31 on both sides. A drive shaft 34 of a drive leveling roller 33 is inserted into the guide hole 32 so as to be vertically movable and rotatable. A mounting hole 38 is formed in the support rod 36 of the holder 36 and selectively communicates with one of a plurality of locking holes 37 formed above and below the opening edge of the hole 32 along the guide length.

Then, a locking pin 39 is inserted into the mounting hole 38 of one of the support rods 36 and the locking hole 37 in the intermediate portion, and the locking pins 39 are attached to each other so as to be rotatable. A stopper pin 40 is inserted into the hole 37. Also, the other support rod 3 above
A guide rod 42 is inserted into the cylindrical portion 41 formed at the tip of the cylindrical portion 6, and the lower end of the guide rod 42 is pivoted onto the rear end of the grounding body 18. A coil spring 43 is wound around the upper and lower guide rods 42, thereby elastically supporting the other guide rod 36 so as to be movable up and down using the locking pin 39 of one guide rod 36 as a fulcrum. Note that the attachment hole 38 of the other support rod 36 and the locking hole 31 communicating therewith are
If necessary, a bolt may be inserted into and removed from one of the bolts, and a nut 45 may be tightened thereto to connect the bolts to each other.

Next, a chain case 47 and a lower end of a support arm 48 are rotatably attached to both ends of the drive shaft 34 of the drive leveling roller 33 via a bearing body 46.

A bearing body 4 is provided at the upper end of the chain case 47.
A relay shaft 50 is rotatably mounted horizontally through a chain case 9, and a sprocket 51 is fixed to one protrusion of the relay shaft 50 that protrudes into the chain case 47. 34 chain case 47
A chain 53 is suspended between a sprocket 52 fixed to an inward protrusion. In addition, the relay shaft 5
The other protruding part protruding outward from the inside of the chain case 47 of No. The gear case 54 is attached to the inner upper part of the chain case 47 via the relay shaft 50 so as to be rotatable with respect to the chain case 47 . Furthermore, one end of the drive shaft 6 of the conveyor 4 is rotatably protruded into the upper part of the gear case 54 via a bearing body 56.
A spur gear 57 is fixed to the protruding portion of the shaft 51, and a spur gear 58 fixed to the relay shaft 50 is meshed with this flat gear 51. Further, the rear end of a connecting rod 60 is rotatably attached to the upper end of the support anim 48 via a support shaft 59, and the front end of the connecting rod 60 is attached to the other end of the drive shaft 6 of the conveyor 4. is rotatably connected to via a bearing body 61.

Next, the operation of the above configuration will be explained.

First, the connecting frame 62 protruding from the front part of the main body frame 1
is connected to the suspension mechanism of the tractor, and the output shaft portion of the tractor is connected to the input shaft 63 of the transmission can 12 via a universal joint.

Next, depending on the working conditions of applying C to the lit field, the operating handle 27 is moved against the spring 30 to the stopper integral 28.
When it is removed from the locking recess 29 and moved along the stopper unit 28, the interlocking horizontal rod 24 fixed to the lower end of the operating handle 27 is rotated around the axis, and the The support rod 20 is moved up and down via the connecting rod 23, and the grounding/resting parts 18 on both sides attached to this support rod 20 are adjusted vertically about the support shaft 16, and the grounding bodies 18 on both sides are adjusted vertically. Set it to the desired proper position, and
When the operating handle 21 is engaged in the locking recess 29 of the stopper unit 28, the operating handle 27 is moved by the action of the spring 30.
is locked in the locking recess 29. As a result, the grounding bodies 18 on both sides are held in position, and the grounding bodies 18 on both sides support the entire weight of the excavator in a slidable manner, and regulate the digging depth in accordance with the working conditions.

At the same time, the height of the grounding bodies 18 on both sides is set, and the drive leveling roller 33, which is mounted on a shaft between the rear upper parts of the grounding bodies 18 on both sides, maintains the set interval at the same time as adjusting its height. The vertical movement can be adjusted while holding the position. In this case, the chain case 47 and the gear case 54, the support arm 48 and the connecting rod 6o, and the chain case 4
7 and the support arm 48 are rotatably connected to the drive shaft 34, and the gear case 54 and the connecting rod 6o are rotatably connected to the drive shaft 6, so when adjusting the vertical movement of the drive leveling roller 33, they are They rotate relative to each other to follow their movements and are thus adjusted and set smoothly.

Then, while the excavator is towed by the tractor, the excavator is slidably moved while being supported by the grounding body 18,
Further, when the drive shaft 6 of the conveyor 4 is interlocked via the transmission 12 and the endless chain 15, the endless rotating body 10 of the conveyor 4 is interlocked and rotated in the direction of the arrow in FIG. Also, when the drive shaft 6 of the conveyor 4 is rotated, this drive shaft 6
spur gear 57.58, relay shaft 50, sprocket 51.
Drive leveling roller 3 via chain 53 suspended from 52
The drive shaft 34 of No. 3 is rotated in conjunction with the rotation of the drive shaft 34, and the drive leveling roller 33 is rotated in conjunction with the rotation of the drive shaft 34 in the direction of the arrow in FIG.

As a result, the crops in the field are dug up one after another by the tip metal 3 as it progresses, and are carried onto the endless rotating body 19 of the conveyor 4, and the endless rotating body 10 shakes off the soil while moving backwards. The material is transported to and discharged from the discharge end thereof. In addition, along with this, the soil that has been swollen and softened by being dug up by the tip metal 3 and the soil that has been shaken off from the endless rotating body 10 is leveled by a drive leveling roller 33 that is rotationally driven at the rear part. be done.

Therefore, the harvested material discharged from the endless rotating body 10 is dropped onto a roughly leveled field.

Next, in the embodiment described above, the power of the drive leveling roller 33 is taken out from the drive shaft 6 of the conveyor 4 via the gear case 54 and the chain case 47 which are rotatably connected to each other. However, the power may be taken out from the drive shaft 6 of the conveyor 4 via the sliding cases 64 and 65 and the sliding shafts 66 and 67, which are slidably and telescopically fitted into each other, for example. . In this case, as shown in FIGS. 5 to 7, a bevel gear 68 is fixed to both ends of the drive shaft 6, and a bevel gear 69 meshed with this bevel gear 68 is attached to an upper sliding case. It is fixed to one sliding shaft 66 rotatably provided in 64 via upper and lower bearing bodies 70. Also, bevel gears 1 are provided at both ends of the drive shaft 34 of the drive leveling roller 33.
11, and the bevel gear 72 meshed with the bevel gear 71 is fixed to the other sliding shaft 67 rotatably provided in the lower sliding case 65 via upper and lower bearing bodies 73. Further, a large-diameter guide cylinder part 74 is formed in the lower part of the upper sliding case 64, and an engaging cylinder part 75 formed in the upper part of the lower sliding case 65 is vibrated within this guide cylinder part 74. Insert freely. Furthermore, a sliding hole 76 is formed in the lower part of one of the sliding shafts 66, and the upper part of the other sliding shaft 67 is slidably inserted into this sliding hole 76. As a result, the upper sliding case 64 is connected to the drive shaft 6 through the bearing body 56.
In addition, the lower sliding case 65 is rotatably attached to the drive shaft 34 via the bearing body 46, and
Upper and lower sliding cases 64, 65 and upper and lower sliding shafts 66, 6
7 are telescopically connected to each other, and the vertical movement of the drive leveling roller 33 can be smoothly adjusted in accordance with the vertical movement adjustment of the grounding body 18.

Further, as shown in FIG. 8, a gear interlocking mechanism 77 is attached to the drive shaft 6 of the conveyor 4, and a sprocket 79 is fixed to an output shaft 78 of the gear interlocking mechanism 77. Further, a sprocket 80 is fixed to the drive shaft 34 of the drive leveling roller 33, and a tension roller 81 is attached to the rear lower part of the main frame side plate 2.
is mounted on an axis via an arm 82.

Then, an endless chain 83 is suspended between the sprockets 79 and 80 and between the tension roller 81. The drive leveling roller 33 may be driven in conjunction with the endless chain 83. Further, the rotation of the arm 82 is adjusted according to the upper and lower positions of the drive leveling roller 33 to set the pair of tension rollers 81 to be offset.

Thereby, the drive leveling rollers 33 can be reliably driven in conjunction with each other.

Note that the power of the drive leveling roller 33 is not limited to the case of transmitting the power by a two-step folding case and chain as in the above embodiment, the method of extending and contracting an interlocking shaft, and the method of using an endless chain. It may also be used to transmit power. In this case, the power may be taken out directly from the transmission 12 or from the drive shaft 6.

〔Effect of the invention〕

According to the present invention, a grounding body is attached to the lower part of the body frame which is inclined and connected to the excavation body and the conveyor at the rear end of the excavation body. Since the drive leveling roller is rotatably provided at the rear upper part of the body, the grounding body and the driving leveling roller are arranged in relation to each other at a predetermined vertical relationship position, and the height of the grounding body is adjusted and the driving leveling roller is rotated at the same time. The height of the rollers can be adjusted reliably, and there is no need to individually adjust each other, so handling is extremely easy.Furthermore, since the rollers can be adjusted simultaneously, it is mechanically very large. ] is simplified to
The soil swollen and softened by the excavator can be easily and orderly leveled before the harvested material is discharged by the driven leveling roller, thus preventing the harvested material from falling into the recess. Post-processing work such as picking up harvested products is simple, and workability can be greatly improved.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, and FIG. 1 is a side view of one side of the excavation body, FIG. 2 is a side view of a part of the other side of the same, and FIG.
The figure is a sectional view of one side of the section a to a in Fig. 1, Fig. 4 is a perspective view of the support mechanism for the drive leveling roller same as above, and Fig. 5 is a sectional view of one side of the excavator showing another embodiment. FIG. 6 is a sectional view of the same drive mechanism as above, FIG. 7 is a perspective view of a part of the above, and FIG. 8 is a side view of a part of one side of the excavator showing still another embodiment. It is. 1.2 Main frame, 3 Excavation body, 5 Conveyor, 18 Grounding body, 33 Drive leveling roller. $6 pus

Claims (2)

[Claims] (1) An excavation body, a main body frame in which a conveyor is connected to the rear end of the excavation body in an upwardly inclined manner, and a conveyor is attached to the lower part of this main body frame in a height-adjustable manner to absorb the load of the main body frame. 1. An excavator comprising: a supporting grounding body; and a driving ground leveling roller rotatably provided at the rear upper part of the grounding body and leveling the swelling caused by the excavation body. (2) The excavator according to claim 1, wherein the drive leveling roller is attached to the ground body so that its height can be adjusted freely and can be attached and detached.