JP3458915B2 - Lifting device for excavating part of self-propelled root vegetable harvester - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sets the depth of a digging device of a self-propelled root vegetable harvester for mechanically harvesting root vegetables, particularly ginseng. It relates to the configuration of the device. 2. Description of the Related Art Conventionally, a self-propelled root vegetable harvesting machine for harvesting radish, ginseng and the like has been known. A pulling conveyor is placed in parallel, a digging device consisting of a hoe-shaped subsoiler is placed at the front of this pulling conveyor, and this digging device is inserted into the soil, and the root vegetables are pulled from below into the soil. Digging up, pulling the root vegetable leaf from both sides with the belt of the pull-out conveyor, pulling out while transporting the root vegetable diagonally upward, arranging a cutter at the rear end of the transport section, and cutting the root part of the root vegetable leaf with this cutter And the technology of storing the root in a storage container is
It is known. [0003] The digging device and the draw-out conveyor of the conventional root vegetable harvesting machine are constructed so as to be able to move up and down, so that the digging depth and the holding position of the leaves can be adjusted. However, the height is based on the height from the gauge wheel, and in order to adjust the height,
Between the support that fixes the support rod of the gauge wheel, select one of the many bolt insertion holes opened on one side, and fix it with bolts, or change the height position, or A hydraulic cylinder or electric motor is interposed between the support of the gauge wheel and the support of the excavator, or the excavator can be moved up and down directly by the hydraulic cylinder or electric motor so that the operator can Was able to change the height. However, in the configuration in which the bolt fixing position is changed, work is performed little by little to find the most appropriate position and fix the position of the subsoiler.
If the type of root vegetables or the planting depth changes, it takes time to change the depth setting. In addition, in the configuration in which the depth is changed by driving the hydraulic cylinder or electric motor, it is not known how deep the gauge wheel is located, so judgment is made based on intuition and experience. However, it was difficult to return to the original position when it was lifted or partially changed in height. [0005] The present invention uses the following means to solve the above-mentioned problems. Digging root vegetables on one side of the traveling machine and transporting it backward
Raising device 40 to be sent, pulling conveyor 30 and excavating equipment
And place excess F on the back and cut the extra leaves
A self-propelled root vegetable harvesting machine with a sorting and storage unit
And the gauge wheel 11 is arranged in the raising device 40,
The gauge wheel 11 is operated from the driving operation section A to move up and down.
The height of the gauge wheel 11 is adjusted, and the raising device 40
And adjusting the height of the integrated pull-out conveyor 30,
The holding position of the rape leaves is adjustable, and the excavating device F
Is configured to be separately liftable by a lifting cylinder 24,
The excavator cylinder 24 is extended to excavate the excavator F.
Then, the excavating device F comes into contact with the drawing conveyor 30.
Lifting and excavating equipment F
The raising device 40 can be raised, and conversely, the lifting cylinder
When the 24 is reduced and lowered, the drawing conveyor 30 and
The raising device 40 is simultaneously lowered until the gauge wheel 11 touches the ground.
After the gauge wheel 11 has touched the ground,
-24, the excavator F is pulled out from the conveyor 30
Depth setting device 57 is provided to descend to the set depth away from
It is a thing. By using the above means, if the operator sets the lower limit depth of the excavating device in the operation section with the depth setting device, the work implement lowering lever is moved to the minimum during work. Just turning to the lowered position, the excavator is lowered, the rotation angle of the link that supports the excavator is detected by the angle detector, and when the depth is lowered to the set angle, Then, a descent stop signal is sent to the hydraulic control circuit, and the hydraulic valve is switched to stop the operation of the elevating cylinder. Then, when the work is finished, the work is raised and lowered again, the work is lowered to the set angle and stopped. The working depth can be easily changed with a depth setting device. An embodiment of the present invention will be described with reference to the accompanying drawings. 1 is an overall side view of a self-propelled root vegetable harvester of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a plan view of a support link portion of a digging device, and FIG. 5
Is a view showing the structure of the angle detector, FIG. 6 is a side view showing the elevating part of the gauge wheel, FIG. 7 is an upper sectional view of the elevating part of the gauge wheel,
FIG. 8 is a skeleton diagram of the power transmission mechanism. Referring to FIGS. 1 and 2, the overall construction of a self-propelled root vegetable harvesting machine, particularly a root vegetable harvesting machine mainly for ginseng harvesting will be described. First, a crawler-type traveling device 2 is disposed below a horizontally arranged main frame 1, and a driving operation unit A is disposed on the right front (right side in the traveling direction) of the main frame 1. I have. The driving operation unit A has a front column 4 erected at the front, and an operation lever 5 that can simultaneously perform a steering operation and a lifting / lowering operation of a digging device to be described later is protruded above the front column 4.
An accelerator lever 15 is provided on the side. A side column 3 is erected on the side of the front column 4, and a main transmission lever 12 and an auxiliary transmission lever 1 are provided on the side column 3.
3 and the work clutch lever 14 are projected. A driver's seat 7 is provided behind the front column 4, and an engine room is provided below and below the front column 4. An engine E is built in the engine room. A container table 8 is placed on the table. A mechanism for digging root vegetables on the left side of the main frame 1, transporting the root vegetables rearward, and cutting off the leaf portion;
A mechanism for accommodating the root in the container 10 is provided at the rear portion. In other words, from the left front part of the main frame 1, a raising device, a gauge wheel for setting the height of the drawing conveyor,
A raising device for raising the root portion of the root vegetable, a digging device for digging the root vegetable in the soil below, a pulling conveyor for holding and transporting the leaf portion of the root vegetable digged from the rear of the raising device, A leaf cutting device behind the pulling conveyor,
It consists of a sorting conveyor that conveys to the side container. Each of the series of root vegetable harvesting apparatuses will be described in detail. First, in the excavating device, turning fulcrum shafts 20 and 21 are provided horizontally on the upper and lower portions of the front end of the main frame 1. The rear portions are pivotally supported, and the front portions of the upper link 22 and the lower link 23 are pivotally connected to the bracket 25. The upper link 22 and the lower link 23 form a parallel link, and the upper end of the subsoiler 9 is fixed to the bracket 25. As shown in FIG. 4, the rear end of the lower link 23 is connected via an arm 19 to an elevating cylinder 24 composed of a hydraulic cylinder.
4 can be raised and lowered by operating the lower link 2
In the middle of 3, a linking pin 26 projects sideways and is arranged so as to be in contact with a contact arm 27 provided on the side of the pulling-out conveyor 30 described later. An eccentric cam is interposed between the rear portion of the upper link 22 and the rotation fulcrum shaft 20, and the rotation fulcrum shaft 20 can be driven from an output pulley 29 of the engine via a clutch and a belt. Thus, the subsoiler 9 can be driven to vibrate, and the ground is vibrated from below the root vegetable so that the root vegetable rises and can be easily pulled out. The draw-out conveyor 30 has a lower portion of a conveyor support frame 31 extending downward at a rear portion thereof supported by a support 32 projecting upward from the main frame 1, and the support 32 is rotated left and right in the vertical direction. Dynamic shaft 32a
2 and a horizontal rotating shaft 32b, and as shown by a two-dot chain line (30 ') in FIG. 2, the pull-out conveyor 30 is rotated sideways around the left and right rotating shaft 32a, The power transmission mechanism B can be opened. Further, the pulling conveyor 30 is turned up and down about the vertical turning shaft 32b so that the drawing height can be changed or lifted. The pull-out conveyor 30 is provided with a transfer frame 3
0L and 30R are arranged in parallel in the front-rear direction and inclined at the front low and rear high, and the rear lower surfaces of the transport frames 30L and 30R are supported by the conveyor support frame 31, and pulleys 33 are provided at both front and rear ends of the transport frames 30L and 30R.・ 33
, And guide pulleys 34
・ The conveyor belts 30a
On the lower surface of the drawing conveyor 30 from the middle part to the rear part, an auxiliary conveying conveyor 36 wound with a pair of left and right conveying belts is provided so as to pinch and convey the roots of root vegetables. In addition, a star wheel 37 is disposed above the front end of the drawing conveyor 30 to scrape the leaves of the root vegetables. A horizontal conveyor 45 extends rearward in the front-rear direction horizontally at the rear of the pull-out conveyor 30 and the auxiliary transport conveyor 36, and a cutter 46 is disposed on the lower surface of the middle of the horizontal conveyor 45. The roots of the root vegetables are conveyed backward while being positioned at the upper end of the roots by the horizontal conveyor 45, the leaves are cut by a cutter 46 at predetermined positions, and the roots are dropped onto a lower conveyor 47 disposed therebelow, and the leaves are cut off. Is dropped into the field scene from behind. The lower conveyor 47 is composed of a wide belt conveyor, and is disposed horizontally from the rear lower part of the auxiliary conveyor 36 to the rear. A horizontal feed roller 49 is disposed obliquely on the middle of the lower conveyor 47. Has been established. The lower conveyor 47 drives the root vegetables to feed backward, rotates the lateral feed roller 49 in accordance with the feed, and arranges the root vegetables so as to fall on the front part of the horizontal feed roller 49, thereby allowing the horizontal feed rollers 49 to fall. By the rotation of the feed roller 49 and the conveyance drive of the lower conveyor 47, the root vegetables fall on the sorting conveyor 50 at the side. A clutch lever 55 and a safety lever 56 for stopping only the sorting conveyor 50 are arranged at the rear of the sorting conveyor 50. The clutch lever 55 is operated when the container is replaced or jammed, and the sorting conveyor 5 is operated.
0 is stopped so that the root vegetables are not dropped on the field scene. The safety lever 56 is a lever that is long in the width direction and can be rotated upward. A switch is provided at a rotation base of the safety lever 56, and the safety lever 56 is connected to an ignition device or a fuel injection device of the engine E, When the switch is turned on by rotating the safety lever 56, the engine E is stopped. That is, since the auxiliary work performs the sorting work at the rear of the sorting conveyor 50,
When the machine moves backward, the safety lever 56 comes into contact with the worker and rotates, so that the engine E stops and the worker is prevented from being injured. The operator can also use the safety lever 56 as a lever to stop traveling by arbitrarily rotating the safety lever 56. The sorting conveyor 50 is provided at the rear of the machine in the left-right direction and comprises a wide roller conveyor. The sorting conveyor 50 is fed sideways so as to remove soil adhering to root vegetables. A container mounting table 51 is disposed below the end of the sorting conveyor 50. The container mounting table 51 is urged upward by a spring, and the empty container 10 is mounted obliquely. Root vegetables in container 1
It is housed in 0 to make it hard to be scratched. Then, when the root vegetables are further stored, the container mounting table 51 is lowered against the spring by its own weight, and gradually becomes horizontal so that the container can be stored until the container is full. Are arranged on the side of the body of the container mounting table 51 in the front-rear direction, the front part of the front column 4, and the side of the lower conveyor 47. The body side is pivotally supported so that it can be lifted and rotated to the body side for storage. An elevating device 40 is provided in front of the front end of the drawing conveyor 30. The elevating device 40 faces the belt protruding the tines 40a, 40a,. It is wound so that the roots of the root vegetables are pulled upward to the center. Then, a pulling device 41 is disposed in front of the pulling device 41.
As in the case of the belt 0, the belts protruding the tines 41a, 41a,. A gauge wheel 11 is disposed on the front side of the raising device 40. As shown in FIG. 6, the gauge wheel 11 is rotatably supported at the tip of a support arm 42, and the other end is rotatably supported by a fulcrum shaft 44 below the elevating device 40. It is pivotally supported at the lower end of the support pipe 70. This support pipe 70
As shown in FIG. 7, a screw rod 71 is screwed on an upper end of the screw rod 71, and an upper portion of the screw rod 71 is rotatably supported by a support arm 72. Fixed. The upper end of the screw rod 71 is connected to a drive shaft of a motor 43 provided on the upper part of the support arm 72. The motor 43 can be operated from a driving operation section A. 71, and this rotation causes the support pipe 7 to rotate.
0 is raised and lowered, the gauge wheel 11 is raised and lowered, and when the height of the crawler and the gauge wheel are different, the height of the pre-processing device including the raising device 40 and the pulling device 41 and the height of the drawing conveyor 30 are adjusted. And the holding position of the root portion of the root vegetables can be adjusted. The screw rod 71 is covered by a pipe 73, and a switch box 74 is fixed to the pipe 73, and limit switches 75a and 75b are disposed at upper and lower positions in the switch box 74. 76
Is fixed to a support pipe 70, and a detection rod 76 is slidably supported by a switch box 74. A contact plate 76a is fixed to an upper end of the detection rod 76. 75a and 75b. Therefore, when the motor 43 is driven by the driving operation unit A to move the gauge wheel 11 up and down,
When it is moved up and down to the lowermost position and the uppermost position, it comes into contact with the limit switches 75a and 75b and is turned on, and the rotation is automatically stopped so that the lifting mechanism is not damaged. A contact arm 27 protrudes from the front side of the transfer frame 30R and is disposed at a position where it can contact the link pin 26. When the lift cylinder 24 is extended and raised, Link pin 26 is in contact with arm 27
The drawing conveyor 30 and the pre-processing device can be raised together with the excavating device while being brought into contact with the lower surface and lifted. vice versa,
When the lifting cylinder 24 is reduced and lowered, the drawing conveyor 30 and the pre-processing device are simultaneously lowered until the gauge wheel 11 comes into contact with the ground, and after the gauge wheel 11 comes into contact with the ground, the linking pin 26 is activated by the operation of the lifting cylinder 24. Is separated from the contact arm 27 and only the subsoiler 9 descends to the set depth. That is, the present invention relates to a subsoiler 9 for excavating equipment.
The lower limit position of the lower link 23 can be set by the driving operation unit A. As shown in FIGS. The support plate 17 is further protruded forward, and an angle detector 39 is provided on a side surface of the support plate 17. The angle detector 39 is slidable with the pin 16 by projecting a forked detection arm 39 a at the tip. Is engaged. As shown in FIG. 5, the angle detector 39 comprises a rotary switch. A movable contact 39b connected to the detection arm 39a and contacts 39c, 39d, 39e. A movable contact 39b is provided by rotation of the detection arm 39a.
Can contact any of the contacts 39c, 39d, 39e, and 39f. The contact points 39c, 39d,
39e and 39f are connected to a hydraulic control circuit 59 via a depth setting device 57 provided on the front column 4.
The depth setting device 57 is provided with switches of the number of depths to be set. However, the depth setting device 57 may be configured to digitally select the rotation of the knob or the input of numbers. Therefore, before the work, the lowering position of the subsoiler 9 can be selected by the depth setting device 57, for example, shallow, medium, deep, without limitation, etc., and any one of them can be set by a switch operation. When the lower link 23 is lowered by the lowering operation of the operation lever 5, the pin 16 rotates the detection arm 39a by engagement with the detection arm 39a,
When the movable contact 39b also rotates and comes into contact with the contact at a desired position, the signal is input to the hydraulic control circuit 59, and the hydraulic control circuit 59 switches the lift valve of the lift cylinder 24 to stop the lowering. However, the configuration of the angle detector 39 is not limited, and may be an angle sensor such as a potentiometer or a rotary encoder, and the depth setting device 57 may be configured to set an angle. Next, the power transmission structure will be described with reference to FIG. 8. Three output pulleys 29 are fixed on the output shaft of the engine E, and the power from the engine E is transmitted from the output pulley 29a on the output shaft. The transmission is transmitted to the transmission case 61 via a belt and a clutch.
1, the crawler-type traveling device 2 is driven and transmitted to a driving pulley 64 via a one-way clutch 63 on a PTO shaft 62. The pulling conveyor 30 and the pre-processing device are transmitted from the driving pulley 64 via a clutch 65. I try to drive. Further, the eccentric cam provided on the rotation fulcrum shaft 20 is rotated from the output pulley 29b on the output shaft of the engine E via the clutch 66 to drive the digging device by vibration. Further, a lower conveyor 47, a lateral feed roller 49, and a sorting conveyor 50 are driven from an output pulley 29c on an output shaft of the engine E via a belt, a pulley, and a clutch 67.
However, the clutches 65 and 67 are linked. In such a configuration, when the elevating cylinder 24 of the root vegetable harvester is reduced and the pulling conveyor 30 and the digging device are lowered, the pulling conveyor 30
And the digging device descends to the depth set by the depth setting device 57. And
When the harvesting operation is performed while moving forward, the pulling device 41 lifts the leaf portion of the root vegetable that has spread and fallen in the lateral direction upward in the traveling direction and divides the grass, and the raising device 40 pulls the leaf portion of the root vegetable upward in the left-right direction. The root is lifted by the swinging of the subsoiler 9 from under the root, and the leaf of the root vegetable is moved to the center by the star wheel 37 and is scraped.
The leaf portion is nipped by the belt of the pull-out conveyor 30 and pulled out while being conveyed backward. At the rear of the pulling-out conveyor 30, it is taken over by the horizontal conveyor 45, the upper part (neck) of the root is positioned, the leaves are cut off by the cutter 46, and the root falls on the lower conveyor 47, The leaves are transported backward and fall to the field scene. And the lower conveyor 47
Is transported to the rear by this, and is transported laterally to the sorting conveyor 50 by the lateral feeding roller 49 in the middle of the transport, and the soil adhered during the transportation of the sorting conveyor 50 is dropped.
The small root vegetables are removed and sorted by the operator, and stored in the container 10 from the end of the sorting conveyor 50. The present invention has been configured as described above.
The following effects are obtained. If the working part is lowered only by setting the depth with the operation operation part, the lower end of the subsoiler of the excavator always descends to the set depth position every time it goes up and down and stops Operation is omitted,
The operation is simplified and the work accuracy is improved. Further, the depth can be arbitrarily selected by the depth setting device, and the depth can be easily selected according to the type of the field or the root vegetables.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a self-propelled root vegetable harvester of the present invention. FIG. 2 is a plan view of the same. FIG. 3 is a plan view of a support link portion of the excavating device. FIG. 4 is a side view of the rear portion of the link. FIG. 5 is a diagram showing a structure of an angle detector. FIG. 6 is a side view showing an elevating part of the gauge wheel. FIG. 7 is an upper cross-sectional view of the elevating unit of the gauge wheel. FIG. 8 is a skeleton diagram of a power transmission mechanism. [Description of Signs] A Operation operation unit 1 Main frame 7 Operation seat 9 Subsoiler 23 Lower link 24 Elevating cylinder 30 Extraction conveyor 39 Angle detector 57 Depth setting device 59 Hydraulic control circuit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Keita Uekubo, Inventor Keita 1-32, Kitaya-ku, Osaka-shi, Osaka Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Tomoyoshi Hirose 1, Chaya-cho, Kita-ku, Osaka, Osaka No. 32 Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Shigeki Murata 1-32 Chayacho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Osamu Kawamura 428, Enami, Okayama City Seirei Industry Co., Ltd. (72) Inventor Yoshitaka Nagasaki 428 Enami, Okayama City Inside of Seirei Industrial Co., Ltd. (72) Inventor Kenshi Kobashi 684 Nakafurune, Okayama City, Okayama Prefecture Kobashi Industry Co., Ltd. (72) Inventor Toonori Sato Okayama, Okayama Prefecture 684 Ichinaka Ryou Kobashi Kogyo Co., Ltd. (72) Inventor Tohru Abe 684 Nakabu Rie, Okayama City, Okayama Prefecture Kobashi Kogyo Co., Ltd. (56) References JP-A-7-59427 (JP) A) JP-A-6-292431 (JP, A) JP-A-2-107112 (JP, A) JP-A-7-327444 (JP, A) Japanese Utility Model Showa 57-102908 (JP, U) (58) Survey Field (Int. Cl. ⁷ , DB name) A01D 13/00-33/14

Claims (1)

(57) [Claims] [Claim 1] Root vegetables are dug up on one of the left and right sides of the traveling machine body.
Pulling device 40 and pulling conveyor 30
And digging device F, and cut off the extra leaves at the back.
Self-propelled root vegetables with sorting / storage parts stored in containers
In the harvester, a gauge wheel 11 is arranged on the raising device 40,
The wheel 11 is configured to be moved up and down by operating from the driving operation unit A,
By adjusting the height of the gauge wheel 11, the raising device 40 and the one
Adjust the height of the embodied pull-out conveyor 30 and leave the root vegetables
The excavating device F is separately lifted by the lifting cylinder 24 so that the holding position of the portion can be adjusted.
The lift cylinder 24 is extended and excavated.
When the raising device F is raised, the excavating device F
Lift up in contact with bear 30 and pull out with excavator F
When the conveyor 30 and the raising device 40 can be raised, and conversely, when the lifting cylinder 24 is reduced and lowered,
The pulling conveyor 30 and the raising device 40 have the gauge wheel 11
It descends at the same time until it touches down, and after the gauge wheel 11 touches down
The excavator F is operated by the operation of the lifting cylinder 24.
To separate from the pulling conveyor 30 and descend to the set depth
An elevation device for excavating a self-propelled root vegetable harvester, comprising a depth setting device 57 .