JP2000197403A - Method and apparatus for digging of dioscorea batatas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly dig Dioscorea batatas by smoothly moving Dioscorea batatas backward while keeping Dioscorea batatas in a vertical state, eliminating the collapse of culture soil block moving backward on a digging blade body and not damaging Dioscorea batatas by break, etc., without applying a distorted rear soil pressure to culture soil protecting/holding Dioscorea batatas. SOLUTION: In this method for digging Dioscorea batatas by digging down both end parts of grown Dioscorea batatas to the bottom parts and successively moving the Dioscorea batatas to the upward rear together with culture soil by a digging blade body 8 with an upward tilt rear part, an endless power belt conveyor 11 constituting the rear part of the digging blade body 8 is rotated and driven at a speed corresponding to the operation advancing speed of a tractor, the endless belt conveyor 11 is vertically shaken, the Dioscorea batatas in the culture soil is moved to the upward rear in a state of a protected and held by a culture soil block and vertically retained position to dig the Dioscorea batatas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating blade body which is towed by a tractor and has a rear portion inclined upward, and an endless power belt conveyor constituting the rear portion of the excavating blade, which quickly and smoothly excavates a long tool without damaging it. The present invention relates to a method and an apparatus for excavating a long object.

[0002]

2. Description of the Related Art Various types of long excavating devices have been proposed in the prior art. However, there is a device in which a cultivated soil block whose long portion is protected and held by a digging blade body whose rear portion is inclined upward is sequentially raised upward. In addition, the tractor must have a traction force to resist the frictional force between the upper surface of the excavating blade and the lower surface of the cultivation soil block. For this reason, as shown in FIG. 5, the excavating blade body 40 is formed by digging up the cultivated soil and moving forward with the cutting blade body 44 and the blade body 4.
4 is connected to the endless belt conveyor 41 at the rear, which is rotatable, and is rotated by the endless belt conveyor 41 induced by the frictional force between the upper surface of the endless belt conveyor 41 and the lower surface of the cultivation soil block. The cultivated soil block is moved rearward, and the endless belt conveyor 41 at the rear part of the excavating blade body 40 is circularly moved as shown in FIG. (For example, see Japanese Unexamined Utility Model Publication No. 4-65021).

[0003]

As described above, the excavating blade body 40 having the endless belt conveyor 41 and the endless belt conveyor 41 making an arc movement has the following disadvantages.

[0004] Generally, the rear earth pressure on the upper surface of the excavating blade body 40, which is generated as the tractor advances, is small in a portion close to the top soil and large in a deep portion of the soil. By the way, even in the case of utilizing the rotation of the belt conveyor as described above, the frictional force between the upper surface of the belt and the lower surface of the cultivated soil is considerably large in order to induce the rotation, and therefore, as shown in FIG. As described above, the long frame 43 subjected to the distorted rear side earth pressure moves upward and backward while the lower portion thereof is behind the upper portion (the upper portion of the long frame 43 is tilted backward) (the vertical position cannot be maintained). At the longest, 43 may be damaged.

As described above, in addition to the inclination of the long tall 43 being induced, when the arcing motion is given to the digging blade body 40, the cultivated soil block that protects and holds the long thigh 43 is also provided. In addition, the impact due to the further deformed earth pressure is applied, and as a result, the cultivated soil block collapses, and the block meanders on the belt conveyor 41. 43
Breaks with the collapse. In addition, the cultivated soil block itself may be broken, and the long block in the cultivated soil block may be broken at a stretch.

As shown by a two-dot chain line in FIG. 5, when the digging blade body 40 makes a circular motion with the support shaft 42 as a fulcrum,
The blade part 44 constituting the front part of the digging blade body 40 also causes an arc movement (B in FIG. 5) to remove uncultivated soil in the deep part of the soil.
As a result, the digging device is pushed up and down, and this condition affects the tractor's tenacity, and the whole digging device vibrates up and down for a long time. When the entire excavator is vibrated up and down for a long time, the vibration is transmitted to the tractor to which the excavator is connected, so that a large tractor is required for suppressing or preventing the vibration.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to keep a long tall in a vertical posture without applying a distorted earth pressure to a cultivated soil that has protected and held a long thigh. While moving smoothly backwards,
It is an object of the present invention to provide a method and a device for excavating a cultivated soil block that moves backward on a digging blade body and that can be digged quickly without causing damage such as breakage in a long way. .

[0008]

SUMMARY OF THE INVENTION According to the present invention, a grown long one is excavated on both sides and excavated to a lower end, and a long one is sequentially turned upward with a cultivated soil by a digging blade body having a rear portion inclined upward. The object of the present invention relates to a method of excavating a long object to be moved rearward, while rotating an endless power belt conveyor constituting a rear portion of the excavating blade at a speed corresponding to a work advance speed of a tractor, and The power belt conveyor is swung up and down, and the endless belt conveyor protects and holds the long thigh in the cultivated soil on the cultivated soil block, and moves the long thigh upward and backward while maintaining the vertical posture. Achieved by digging.

The present invention also relates to a long excavating apparatus, and an object of the present invention is to excavate cultivated soil on both sides of a long tractor driven by a transmission input from a PTO shaft (power take-out shaft) of a tractor. A pair of digging means, a digging blade body arranged rearwardly inclined rearward of the pair of digging means, and rotationally driven via a drive medium from an input shaft connected to the PTO shaft; An endless power belt conveyor that constitutes a rear portion of the excavating blade body is provided, and the long end of the cultivated soil is protected by a cultivated soil block by rotating and driving the endless power belt conveyor at a speed corresponding to a working forward speed of the tractor. This is achieved by digging the long thigh by holding it and moving upward and backward while maintaining the vertical posture.

Further, the above object of the present invention is to provide a tractor having a P
A pair of excavating means for excavating cultivated soil on both sides of a long one driven by a mission input from the TO shaft, and a digging blade body disposed rearwardly and inclined upward behind the pair of excavating means. An endless power belt conveyor driven by an input shaft connected to the PTO shaft via a drive medium and constituting a rear portion of the digging blade body; and the endless power belt conveyor by an eccentric arm mechanism with respect to the input shaft. And a pair of excavating means for excavating cultivated soil on both sides of a long one driven by a mission input from a PTO shaft of a tractor, and a pair of excavating means. A digging blade body rearwardly arranged with a rear portion inclined upward, and an input shaft connected to the PTO shaft, driven to rotate via a drive medium,
An endless power belt conveyor that constitutes a rear portion of the excavating blade body; a swinging unit that swings the endless belt conveyor up and down by an eccentric arm mechanism with respect to the input shaft; and the endless power belt connected to the input shaft. This is achieved by providing a cleaner mechanism that swings a cleaner bar in a direction intersecting with the forward movement direction of the tractor at the upper part of the conveyor.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An endless power belt conveyor which constitutes a rear portion of a digging blade and is driven by a motor which operates at a speed corresponding to a working forward speed of a tractor, protects a long belt moved backward. Distorted rear earth pressure is not applied to the held cultivation soil block (because the friction between the upper surface of the belt and the lower surface of cultivation soil is small). Can be drilled quickly and efficiently without damaging the long ones. By oscillating the endless power belt conveyor or providing a cleaner mechanism for loosening the cultivated soil above the endless power belt conveyor, more efficient excavation can be performed. In addition, by providing the cultivated soil retaining portion in the endless power belt conveyor, the workability of the endless power belt conveyor can be further improved.

FIG. 1 is a perspective structural view of a long excavating apparatus used for carrying out a long excavating method. A driving sprocket 3 is provided on a pair of left and right sides of a transmission 2 mounted on a base frame 1. These drive sprockets 3
Are rotated by the rotation of the drive sprocket 3 due to the input from a PTO shaft (power take-out shaft) of a tractor (not shown), and advance while excavating both sides of the long one. A number of excavating blades (not shown) are provided around the excavating chain 4, and the cultivated soil on both sides of a long growing one is excavated by the rotation of the excavating chain 4. The excavation chain 4 is appropriately tensioned by a tension portion 6 attached to a boom 5 fixed to the outside of the base frame 1. A pair of support bars 7 are attached to both sides of the rear end of the base frame 1, and the upper part of the support bar 7 is fixed to the base frame 1, and the lower part is a side plate of a digging blade 8 whose rear part is inclined upward. Support shaft 29 on the side of 9
An endless power belt conveyor with a power for moving a cultivated soil, which has protected and held a long tall upward and rearward, is provided at the front of a digging blade body 8 at the front thereof. 11 are formed. In the present embodiment, the endless power belt conveyor 11 is driven by a hydraulic motor, but may be driven by an electric motor.

Reference numeral 12 denotes a pair of mast stays whose bases are pivotally connected to the front of the base frame 1. The top of the mast stay forms a top hitch 13, and the rear is connected to one end of a hydraulic cylinder 14. The other end of the hydraulic cylinder 14 is connected to a pair of brackets 15 provided behind the base frame 1,
The working posture of the base frame 1 is controlled via the mast stay 12 by the expansion and contraction operation of. Reference numeral 16 denotes a lower pin,
Is configured to be able to move to the left and right.

On the other hand, a sprocket 18 is mounted on an input shaft 17 connected to the PTO shaft of the tractor, and a sprocket 20 is mounted on a hydraulic pump 19 mounted on the base frame 1.
Is mounted, and pressure oil is generated from the hydraulic pump 19 by the rotation of the input shaft 17 via a chain 21 wound around the sprockets 18 and 20.
A hydraulic motor 2 is provided inside the endless power belt conveyor 11.
2, a sprocket 25 is attached to the hydraulic motor 22, and a pipe is connected between the hydraulic pump 19 and the hydraulic motor 22 by an oil supply pipe 23 and an oil discharge pipe 24, and an endless power belt conveyor is provided. 11
Is wound around a driving drum 26, and a sprocket 27 is attached to the driving drum 26. A chain 28 is wound between a sprocket 25 attached to the hydraulic motor 22 and a sprocket 27 attached to the driving drum 26, and the driving drum 26 is rotated by the rotation of the hydraulic motor 22. Thereby, the endless power belt conveyor 11 is also driven in the illustrated C direction.

The pressure oil generated by the hydraulic pump 19 rotating with the rotation of the input shaft 17 supplies an oil amount controlled by an oil amount adjusting valve (not shown) to a hydraulic motor 22 through an oil supply pipe 23, 22 is rotated. The rotation of the hydraulic motor 22 rotates a driving drum 26 (endless power belt conveyor 11) via a chain 28 wound around sprockets 25 and 28, and the rotation speed (moving speed) is controlled by an oil amount adjusting valve. , That is, one corresponding to the work advance speed.

The detailed structure of the excavating blade 8 is as shown in FIG. 2, and the endless power belt conveyor 11 is wound around a driving drum 26 and rotating rollers 30, 31, and 32, and a sprocket. A deceleration mechanism 33 is provided between 25 and 27, and the driving drum 26 is rotated by obtaining power by decelerating the rotational drive of the hydraulic motor 22. On the bottom surface inside the endless power belt conveyor 11 which is hollow, a cultivation soil retaining plate 34 having an L-shaped cross section is provided at a position almost in contact with the lower upper surface of the endless power belt conveyor 11. And cultivation soil holding board 3
The side plate 9 at a position corresponding to 4 is provided with a take-out port 35 that can be opened and closed (a cover is omitted in the drawing).
The cultivated soil holding plate 34 is fixed to the side plate 9. Although the space between both ends of the endless power belt conveyor 11 and the side plate 9 is tight, the endless power belt conveyor 11
, The fine cultivated soil is mixed and deposited in the internal cavity from the gap. The cultivated soil mixed into the cavity is conveyed in the forward direction on the lower upper surface of the endless power belt conveyor 11 and held at the position of the cultivated soil holding plate 34.

In the present invention, there is further provided an eccentric arm mechanism 50 which moves up and down eccentrically to the rotation of the input shaft 17,
The eccentric arm mechanism 50 also has a pair of diaphragms 51 fixed to both ends thereof, and each diaphragm 51 is pivotally supported by the side plate 9 of the digging blade body 8. The details of the eccentric arm mechanism 50 are as shown in FIG. 3. An eccentric shaft 17A whose axis is shifted is connected to a part of the input shaft 17, and a bearing 52 is mounted on the eccentric shaft 17A. Is connected to the joint mechanism 53. The eccentric arm mechanism 50 is connected to the joint mechanism 53. Therefore, when the input shaft 17 rotates, the eccentric shaft 17A rotates eccentrically, and the eccentric arm mechanism 50 moves up and down by this eccentric operation, so that the diaphragm 51 also moves up and down, and the digging blade 8 rotates the support shaft 29. It will swing as an axis. This swing is set to such a degree that the blade body 10 constituting the front part of the digging blade body 8 generates an arc motion and the above-described inconvenience does not occur.

At the end of the input shaft 17, a cleaner mechanism 6 is further provided.
0, and the cleaner rod 6
2 are connected. The cleaner mechanism 60 includes the input shaft 17.
Is converted into a repetitive rocking motion in a direction orthogonal to the traveling direction. The repetitive rocking motion of the cleaner rod 62 can loosen the cultivated soil above the endless power belt conveyor 11 and move the cultivated soil. Is smooth. As the cleaner mechanism 60, for example, an actual open flat 8-16
No. 46, Japanese Unexamined Utility Model Publication No. 4-88220 can be used.

According to the long excavating apparatus as described above, as shown in FIG. 4, the cultivation which protects and holds the upper surface of the endless power belt conveyor 11 and the long one moved backward by the endless power belt conveyor 11 is shown. By utilizing the slight friction between the lower surface of the soil and the moving amount of the lower surface of the cultivated soil, it is possible to correspond to the moving forward speed of the tractor. 43
Can be smoothly moved backward while maintaining the vertical posture.

By arranging a plurality of protrusions on the surface of the endless power belt conveyor 11, it is possible to ensure a synchronous movement without displacement between the endless power belt conveyor 11 and the cultivated soil block. .

In the above description, the endless power belt conveyor is rotatably driven by a hydraulic pump and a hydraulic motor linked to the input shaft. However, an electric motor or a hydraulic motor independent of the PTO shaft is connected to the endless power belt conveyor. And may be driven to rotate by a separately provided control device. Further, the rotation speed of the endless power belt conveyor is adapted to correspond to the forward movement speed of the tractor, but this correspondence is not necessarily one-to-one.
It is not limited to. Furthermore, the vibration of the endless power belt conveyor, the installation of the cultivation soil holding section, the arrangement of the cleaner mechanism, and the like can be used in an appropriate combination.

[0022]

As described above, according to the long excavating method and apparatus of the present invention, the endless power belt conveyor constituting the rear part of the excavating blade is driven to rotate at a speed corresponding to the work advance speed of the tractor. Therefore, the cultivated soil does not receive the distorted rear side earth pressure, and the long one that moves rearward while maintaining the vertical posture while growing in the cultivated soil has no damage such as breakage, Grasping becomes easy and work efficiency can be improved. In addition, since the motor for rotating the endless power belt conveyor is provided therein, the digging device can be made compact.

Further, a cultivated soil reserve is provided in the endless power belt conveyor so that the cultivated soil mixed therein can be removed, so that maintenance is convenient and there is a great advantage in terms of durability. . When the swinging means and the cleaner mechanism of the endless power belt conveyor are provided, the cultivated soil in a large lump is crushed and moved, so that the movement of the cultivated soil becomes smoother.

[Brief description of the drawings]

FIG. 1 is a perspective structural view showing an example of a long excavating apparatus according to the present invention.

FIG. 2 is a perspective structural view showing a structural example of a digging blade of a long digging device according to the present invention.

3A and 3B are structural views of an eccentric arm mechanism, wherein FIG. 3A is a front view, and FIG. 3B is a sectional structural view of an eccentric portion.

FIG. 4 is a diagram illustrating a posture of a long object during excavation of the long object.

FIG. 5 is a schematic side view of a digging blade of a conventional device.

FIG. 6 is a diagram illustrating a posture of a long object during excavation of a long object in a conventional apparatus.

[Explanation of symbols]

 Reference Signs List 8 excavating blade body 10 blade section 11 endless power belt conveyor 17 input shaft 19 hydraulic pump 22 hydraulic motor 34 cultivated soil retaining plate 50 eccentric arm mechanism 51 diaphragm 52 bearing 53 joint mechanism 60 cleaner mechanism

Claims (10)

[Claims] 1. A long excavation that excavates both sides of a grown long excavation and excavates to a lower end of the long one, and a long excavation blade body whose rear portion is inclined upward is sequentially moved upward together with the cultivation soil. In the method, an endless power belt conveyor constituting a rear portion of the digging blade is rotationally driven at a speed corresponding to a work advance speed of a tractor,
The endless power belt conveyor is rocked up and down, and the endless power belt conveyor protects and holds the long thigh in the cultivated soil on the cultivated soil block, and moves upward and backward while maintaining the vertical posture. A method for excavating a long object, wherein the long object is excavated. 2. The long one according to claim 1, wherein the cultivated soil is loosened by a cleaner rod swinging in a direction intersecting with a working advance direction of the tractor at an upper part of the endless power belt conveyor. Digging method. 3. A pair of excavating means, which are driven by a mission input from a PTO shaft of a tractor and excavate cultivated soil on both sides of a long one, are disposed rearwardly inclined upward behind the pair of excavating means. The excavating blade body provided and the P
An endless power belt conveyor that is rotatably driven via a drive medium from an input shaft connected to the TO shaft and constitutes a rear portion of the digging blade body, wherein the endless power has a speed corresponding to a work advance speed of the tractor. By rotating the belt conveyor, long tills in cultivated soil are protected by cultivated soil blocks.
A long digging device characterized in that the long thigh is dug by moving upward and backward while holding and maintaining a vertical posture. 4. The long excavating apparatus according to claim 3, wherein the driving medium comprises a hydraulic pump and a hydraulic motor, and the hydraulic motor is housed and disposed inside the endless power belt conveyor. 5. The long end according to claim 3, wherein the inside of the endless power belt conveyor is hollow, and a cultivated soil holding section for accumulating and holding cultivated soil mixed in the hollow is provided. Digging equipment. 6. The long excavation according to claim 5, wherein an openable opening is provided on a side surface of the endless power belt conveyor, and the accumulated cultivated soil is removed from the outlet. Taking device. 7. A pair of excavating means, which are rotatably driven by a transmission input from a PTO shaft of a tractor and excavate cultivated soil on both sides of a long one, are disposed rearwardly inclined upward behind the pair of excavating means. The excavating blade body provided and the P
The endless power belt conveyor, which is rotationally driven via a drive medium from an input shaft connected to the TO shaft and forms a rear portion of the excavating blade, and the endless power belt conveyor is vertically moved by an eccentric arm mechanism for the input shaft. With a rocking means for rocking, by rotating and driving the endless power belt conveyor at a speed corresponding to the work advance speed of the tractor, the rock is protected and held in a cultivated soil block, a long one in cultivated soil, A long object digging device wherein the long object is digged by moving upward while keeping a vertical posture. 8. The long end according to claim 7, wherein the inside of the endless power belt conveyor is hollow, and a cultivated soil holding part for depositing and holding cultivated soil mixed in the hollow is provided. Digging equipment. 9. A pair of excavating means for excavating cultivated soil on both sides of a long one, which is rotatably driven by a mission input from a PTO shaft of a tractor, and a rear part is disposed upwardly behind the pair of excavating means. The excavating blade body provided and the P
The endless power belt conveyor, which is rotationally driven via a drive medium from an input shaft connected to the TO shaft and forms a rear portion of the excavating blade, and the endless power belt conveyor is vertically moved by an eccentric arm mechanism for the input shaft. A swing mechanism that swings, and a cleaner mechanism that is connected to the input shaft and swings a cleaner bar in a direction intersecting a work advance direction of the tractor above the endless power belt conveyor; With the endless power belt conveyer rotating and swinging at a speed corresponding to the work advance speed, while loosening the cultivated soil, the long soil in the cultivated soil is protected and held by the cultivated soil block, and the vertical posture is maintained. A long excavating device, wherein the long thigh is excavated by moving upward. 10. The long end according to claim 9, wherein the inside of the endless power belt conveyor is hollow, and a cultivated soil holding part for accumulating and holding cultivated soil mixed in the hollow is provided. Digging equipment.