JPS619210A - 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] [Industrial application field] The present invention relates to an excavator for digging up crops.

[Conventional technology]

In a conventional excavator, for example, the upper part of a conveyor frame is integrally fixed to the lower parts of both sides of the main body frame that houses the input shaft and the vibration cam, and an endless body can be freely attached between the conveyor frames. At the same time, a rotating shaft serving as a rotational fulcrum is horizontally mounted on the upper front end of the conveyor frame, and the upper part of a vibrating frame having a vibrating tip serving as an excavating vibrating body at the lower end is fixed to this rotating shaft. In addition, there is a structure in which the vibration cam is interlockingly connected to the rotating wheel, and a hitch metal fitting is protruded from the front of the main body frame so that the depth can be adjusted.

(Problems to be Solved by the Invention) In the structure of the conventional excavator described above, the height from the bottom surface of the vibrating tip to the vibrating cam of the main body frame that transmits power to the vibrating tip is always fixed. Since the depth is constant, the depth adjustment can only be made within a short distance between the lower part of the main body frame and the hitch fitting that projects forward in the upper part of the main body frame. When adjustment is performed, although the amount of change in the distance between the vibrating tip and the hitch metal fitting is small, the change m in the inclination of the hitch metal fitting itself in the front and back direction is large. There are problems such as difficulty in doing so.

[Means for solving problems]

The present invention is provided with a main body frame in which a hitch metal fitting is projected in the front and connecting arms extend parallel to each other at the rear of both sides, and the harvested product is transported to the rear ends of the opposing connecting arms of the main body frame. The rear part of a conveyor body, in which an endless body is suspended so as to be freely rotatable, is connected to the rear part of the conveyor body so as to be freely rotatable in the vertical direction via a rotational fulcrum, and the harvested material is transferred onto the endless body at the tip part of the conveyor body via a link. A vibrating frame having a vibrating excavating body for excavation and supply is installed in a row so as to be able to freely vibrate in the front and rear directions, and the hitch fitting (with respect to the above-mentioned This system is characterized by being connected to a bathymetric adjustment mechanism that adjusts the depth and depth of the vibrating excavation body.

[Effect]

Invented depth adjustment mechanism 0 explosion 5 degrees 1 main body 7
) The conveyor body and the vibrating frame are adjusted in depth and shallowness around the rotational fulcrum at the rear of the frame, and even when the distance between the vibrating excavator and the hitch metal fittings changes greatly, the conveyor body and the vibrating frame are adjusted in depth and depth in the longitudinal direction of the hitch metal fittings themselves. The amount of change in the slope is extremely small.

〔Example〕

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

In the figure, 1 is the main frame, and this main frame 1
A hitch fitting 2 is protruded forward in a substantially horizontal manner from an intermediate portion thereof, and a hitch fitting 3 is integrally fixed to the distal end of the hitch fitting 2.

This hitch metal fitting 3 is composed of an engaging plate 4, a sheep pipe 5 with vertical openings, and a plurality of bolts and nuts 6. Further, a pair of mounting plates 7 are protruded in parallel from each other on the rear part of the hitch mounting bracket 2.
A horizontally long cylindrical case body 9 is integrally suspended in the engagement recess 8 of the case body 9, and an input shaft 11 and an output shaft 12 with a clutch mechanism 10 interposed in the middle are inserted into the case body 9 via a bearing body 13. It is horizontally suspended so that it can rotate freely. Further, the front end portions of the connecting arms 14 are fastened to both ends of the main body frame 1 in a parallel manner facing each other, and extend downwardly at an angle toward the rear. A circular sliding hole 15 serving as a rotation fulcrum is formed opposite to each other.

Further, 16 is a conveyor body, and this conveyor body 16 has plate-shaped conveyor frames 17 arranged opposite to each other, and a cylindrical bearing body 19 is inserted through a through hole 18 between the rear ends of the opposing conveyor frames 17. is projected outward, and this bearing body 19
A drive shaft 21 is rotatably mounted between opposing bearings 20 mounted on the drive shaft. Further, a driven shaft 22 is rotatably mounted between the front ends of the opposing conveyor frames 17, and driven shafts 22 corresponding to sprockets 23 fixed to both ends of the drive shaft 21 are attached to both ends of the driven shaft 22. A roller 24 is attached, and an endless body 25 is suspended between the driven roller 24 on both sides and the sprocket 23 so as to be able to accompany the sprocket. This endless body 25 is constructed by mounting a large number of horizontal rods 27 parallel to each other at a predetermined interval between opposing endless chains 26. Further, an annular sliding recess 28 is formed as a rotation fulcrum on the outer periphery of the bearing bodies 19 on both sides that support both ends of the drive shaft 21, and the connecting arm 14 is slidable in the sliding recess 28 on both sides. A moving hole 15 is slidably engaged. As a result, the conveyor body 16 is connected to the rear end portions of the connecting arms 14 on both sides so that the conveyor body 16 can freely rotate in the vertical direction using the sliding recess 28 on the outer periphery of the drive shaft 21 as a rotation fulcrum. There is.

Next, a large diameter portion 29 having the bearing body 13 is formed at one end of the case body 9, and a gear case 30 is connected to the outer end of the large diameter portion 29. The outer end portion of the bevel gear 31 is protruded, and a bevel gear 31 is integrally fixed to this protruding end portion. In addition, the conveyor body 16
One end of the drive shaft 21 protrudes into the gear case 32,
A bevel gear 33 is integrally fixed to this protruding end. Further, a cylindrical case 34 is connected between the gear cases 30 and 32, and an interlocking shaft 3 provided within this cylindrical case 34.
Both ends of the bevel gear 31.3 protrude into the gear cases 30, 32 and are rotatably supported via bearings (not shown).
Bevel gears 36 and 37 meshed with 3 are integrally fixed.

Also, conveyor frames 11 on both sides of the conveyor body 16
The front end of the grounding body 38 is supported on the lower front end of the grounding body 38 via a support shaft 39 so as to be vertically movable. The conveyor frame 17 is vertically adjustable and supported by a plurality of locking holes 42 and lock pins 43 selectively locked to the locking tool 41 of the conveyor frame 17 . The conveyor body 16 is supported by this grounding body 38 in a rearwardly upwardly inclined state.

Further, 44 is a vibration frame, and this vibration frame 44 is
It has a pair of opposing diaphragms 45 disposed on both sides, the upper end of a connecting plate 46 is integrally fixed to the tip of the pair of diaphragms 45, and the lower end of the connecting plate 46 on both sides is connected. A tip metal body 48 as a vibrating excavator is integrally fixed to the mounting plate 47 which is connected across the sides, and the harvested material is excavated onto the endless body 25 of the conveyor body 16 at the rear end of the tip metal body 48. A large number of vertical rods 49 are arranged in parallel in the width direction at predetermined intervals. Further, the upper ends of front and rear links 50.51 are pivotally attached to the front and rear parts of the diaphragms 45 on both sides of the diaphragm 45 on both sides so as to be rotatable in the front and rear directions by means of a support shaft 52.
．． The lower end portions of the conveyor body 16 are pivotally connected to respective connecting rods 53 and 54 that extend horizontally between the conveyor frames 17 on both sides of the conveyor body 16 at the front and rear sides thereof so as to be rotatable in the front and rear directions. Further, the rear end of a vibrating rod 55 is rotatably attached to the intermediate portion of the link 51 on one side of the rear portion by a support shaft 56, and a vibrating ring 57 is integrally formed at the tip of the vibrating rod 55. This vibrating ring 57 is rotatably engaged via a bearing 59 to an eccentrically rotating cam disc 58 which is integrally fixed to the output shaft 12 within the large diameter portion 29 of the case body 9. .

Also, 60 is the depth adjustment II structure, and this depth adjustment mechanism 11i6
0, an adjustment plate 62 as a rotation plate is rotatably attached to the intermediate portion of the relative sliding connecting arm 14 of the main body frame 1 via a support shaft 61 serving as a rotation fulcrum, and the adjustment plates on both sides The lower end of an interlocking rod 64, which is rotatably connected to one end of the interlocking rod 62 via a shaft 63, is rotatably connected to the interlocking rod 53 at the front of the conveyor frame 17. Further, both ends of an operating rod 65 are integrally fixed to the other end sections of the adjustment plates 62 on both sides, and a rotation opening in the front-rear direction is formed between a pair of protrusions 66 protruding from the middle portion of the operating rod 65. A guide body 68 having a freely adjustable screw tube 67 is rotatably mounted on an axis. Further, the tip of an adjusting screw 69 screwed into the screw tube 67 of the guide body 68 so as to be freely adjustable forward and backward is rotatable via a horizontal shaft 70 to the rear end of the pair of mounting plates 7 of the hitch mounting bracket 2. A handle 71 is attached to the rear end of the threaded cylinder 67 of the guide body 68.

Next, the opposing connecting arms 14 of the main body frame 1
Mounting pieces 7 protrude forward on both sides of the swing frame 72 at the rear end.
3 is rotatably pivoted via a support shaft 74. The swinging frame 72 has a base end portion of the mounting piece 73 fixed to a vertical portion 76 bent on both sides of the horizontal rod 15, and a plurality of round rods are attached to the vertical portion 76 vertically. Horizontal frames 77 arranged side by side are rotatably fixed, and a vertical frame 78 having a large number of round bars arranged in parallel in the middle direction is fixed to the horizontal rod 15, and furthermore, the mounting pieces 72 on both sides are fixed in the middle. cam 79 of the drive shaft 21
A roller 80 engaged with the conveyor frame 1 is rotatably mounted on a shaft, and the mounting pieces 73 on both sides and the conveyor frame 1
A coil spring 81 is tensioned between the cam 7 and the cam 79 so that the lug 80 is always engaged with the cam 79. In addition, 82 in the figure is a tension roller for the endless body 25.

Next, the action of the above structure will be explained. While connecting the hitch fitting 3 to the connecting part of the tractor,
An input shaft 11 is interlocked and connected to a power output shaft portion of a tractor via a not-shown interlocking medium.

Then, when the excavator is pulled by a tractor in the field and the input shaft 11 is driven in conjunction, the output shaft 12 is rotated via the clutch mechanism 10, and the output shaft 12 is connected to the bevel gear 31.3G, the interlocking shaft 35, and the input shaft 11. bevel gear 37
．． The drive shaft 21 of the conveyor body 16 connected via 33 is interlocked and rotated. Also, due to the rotation of the drive shaft 21, the drive shaft 2
The rotation of the sprocket 23 fixed to the sprocket 1 causes the endless body 25 to rotate clockwise in FIG. 2 via the driven roller 24. Further, as the drive shaft 21 rotates, a cam 79 fixed to one end of the drive shaft 21 is moved, and the swing frame 72 is rotated about the support shaft 74 via a roller 80 engaged with the cam 79. It is swung up and down.

Further, when the output shaft 12 is rotated as described above, the cam disk 58 fixed to the output shaft 12 is rotated, and the cam disk 58 is rotated.
The vibrating rod 55 is vibrated and rotated in the front and back direction by the sliding ring 57 that is engaged with the sliding ring 57 via the bearing 59, and the two movements of the vibrating rod 55 cause the link 50. 51, the diaphragm 45 of the oscillating frame 44 is vibrated in the front-rear direction, and the tip body 48 provided at the tip of the diaphragm 45 is also vibrated in the front-rear direction.

Therefore, the harvested material is dug up by the tip metal body 48 vibrated by the forward motion of the excavator, and the harvested material is carried onto the endless body 25 while shaking off the soil from each vertical rod 49 at the rear end, and further The soil is shaken off between the horizontal rods 27 and transported backwards, and from the unloading end of the rocking frame 1
The soil is further shaken off by the swinging motion of the swinging frame 72 and discharged to the rear of the swinging frame 72.

Next, if it becomes necessary to perform depth adjustment,
When the skin handle 11 is rotated, the screw tube 67 is moved forward and backward along the screw rod 69, and the adjustment plate 62 to which the operating rod 65 is connected is rotated about the support shaft 61 as a depth adjustment fulcrum.

Further, by the rotation of the adjustment plate 62, the conveyor body 1 is
The connecting rods 53 at the front of the conveyor frame 17 on both sides of the conveyor frame 17 are interlocked in the vertical direction, and the conveyor rotates around the sliding recess 28 and the sliding hole 15 on the outer periphery of the drive shaft 21 at the rear end of the conveyor body 16. The front part of the body 16 is moved up and down, and the front and rear links 50 and 51 are attached to this conveyor frame 17.
A vibrating frame 44 connected to the vibrating frame 44 is interlocked with the vertical movement of the conveyor body 16, and the tip body 48 at the tip of the vibrating frame 44 is adjusted in depth and shallowness. In this case, main frame 1
On the other hand, the conveyor body 16 equipped with the vibrating frame 44 having the tip metal body 48 is adjusted in depth and depth around the drive shaft 21 disposed at the rear end that drives the endless body 25. When the tip body 48 is moved up and down relatively, in other words, when the depth is adjusted by the depth adjustment mechanism 60 without being connected to a tractor, the hitch fitting 3 is moved up and down relatively largely with respect to the tip body 48, and the hitch is Even if the metal fitting 3 is set to a predetermined height H, the hitch pipe 5 of the hitch metal fitting 3 has a small amount of change in inclination in the front-rear direction, and does not incline greatly in the front-rear direction.

Next, in the embodiment described above, a case has been described in which the mutual fulcrum of the conveyor body 16 including the main body frame 1 and the vibration frame 44 is set around the axis of the drive shaft 21 of the conveyor body 16, but the invention is not limited to this. This pivot point is, for example, −
It may also be set at the rear of the middle part of the conveyor frame 11.

Further, the links 50 and 51 that connect the vibration frame 44 to the conveyor frame 17 are not limited to the parallel links aS as in the above embodiment, but are generally trapezoidal in shape, narrow in the upper part and wide in the lower part in side view. A link mechanism may also be used.

〔Effect of the invention〕

According to the present invention, since the rotation fulcrums of the main body frame and the conveyor body having the vibrating frame having the vibrating excavator are provided at the rear portions of each other, the vibrating excavator is Even when the amount of change in the distance between the hitch metal fitting and the hitch metal fitting is large, there is very little change in the slope of the hitch metal fitting itself in the front-back direction, and therefore depth and shallowness adjustment can be performed smoothly and reliably. This is particularly advantageous in machines.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view of the excavator, Fig. 2 is a partially cutaway side view of the excavator, and Fig. 3 is a partially cutaway side view of the excavator. It is an exploded perspective view. 1. Body frame, 3. Hit fitting, 14. Connection arm, 15.28. Rotation fulcrum, 16. Conveyor body, 17. Conveyor frame, 21. Drive shaft, 25.
- Endless body, 44... Vibrating frame, 48... Vibrating excavation body, 50.51... Link, 60... Bathymetric adjustment mechanism, 62
... Rotating plate, 64 ... Interlocking rod, 69 ... Adjustment screw rod, 71
··handle.

Claims (4)

[Claims] (1) A main body frame with a hitch fitting protruding forward and connecting arms extending parallel to each other at the rear on both sides, and a pivot point at the rear end of the opposing connecting arms of this main body frame. A conveyor body is connected so as to be rotatable in the vertical direction through the conveyor body and rotatably suspends an endless body that conveys the harvested material, and a conveyor body is connected to the conveyor body through a link so that it can freely vibrate in the back and forth direction and at its tip end. a vibrating frame having a vibrating excavator for digging up and supplying harvested products onto the endless body; and a vibrating frame having a vibrating excavator body that excavates and supplies harvested products onto the endless body; and a vibrating frame that is interconnected with the main body frame and the conveyor body, and that is connected to the hitch metal fitting around the pivot point. An excavator comprising: a depth adjustment mechanism for adjusting the depth and depth of the vibrating excavator. (2) The excavator according to claim 1, wherein the conveyor body is rotatably connected to the connecting arm of the main body frame using a drive shaft that drives the endless body as a rotation fulcrum. Machine. (3) The vibration frame is connected to the conveyor frame of the conveyor body so as to be able to vibrate through links that are provided on both sides and are rotatable in the front and rear directions. Excavator described in Section 2. (4) The depth/shallow adjustment mechanism consists of a rotating plate that is rotatably supported on the connecting arm of the main body frame, and an interlocking mechanism that is rotatably pivoted between one end of this rotating plate and the conveyor frame of the conveyor body. Claim 1, characterized in that it is constituted by a rod, and an adjustment screw rod having a handle that is connected to the other end of the rotary plate and the hitch fitting of the main body frame so as to be adjustable in forward and backward movement. An excavator according to any of paragraphs 1 to 3.