JPH1125A - Stem treating mechanism for mobile type stem treating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject stem treating mechanism, capable of surely nipping stems and improving the conveying and work efficiencies and useful for harvesting sweet potatoes, potatoes, etc., by installing nipping springs for urging left and right nipping and conveying belts in the nipping direction and further arranging cover units for covering the nipping springs. SOLUTION: This stem treating mechanism for a mobile type stem treating machine is obtained by installing nipping and conveying belts 24 for conveying stems on the left and right sides of a machine body, composing the rear of the left and right nipping and conveying belts 24 so as to enable the left and right rotation, arranging nipping springs 75 for urging the left and right nipping and conveying belts 24 in the nipping direction and further installing cover units 76 and 77 for covering the nipping springs 75. The cover units 76 and 77 are preferably composed so as to expand and contract interlockingly with the rotation operations of the rear of the left and right nipping and conveying belts 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for removing stems of potatoes and potatoes cultivated from high ridges or flat ridges from the roots.
The present invention relates to a traveling stalk processor that can be picked up by a transfer device and collected on a side of a ridge remote from the ridge.

[0002]

2. Description of the Related Art Conventionally, a traveling stalk processor that stalks potatoes, potatoes, and the like with a scraping device and pulls up the stalks with a nipping and transporting device to tear between a potato in a ridge and the stalks is the same. An earlier application has been filed by the applicant. In the stalk processing mechanism of this traveling stalk processing machine, a nip conveying belt for conveying stalks is disposed on the right and left sides of the machine body, a rear portion of the left and right nip conveying belt is configured to be rotatable left and right, and the left and right nip conveying belt is pinched. A pinch spring biasing in the direction is provided so that the stem can be reliably pinched and conveyed even when the left and right pinch conveyance belt rotates left and right.

[0003]

However, in the stalk processing mechanism as described above, the stalks nipped and conveyed by the nipping and conveying belt may fall during the conveyance or come into contact with the nipping spring. As described above, the dropped stem or the stem in contact with the holding spring may be entangled with the holding spring, and accordingly, soil or mud attached to the stem may adhere to the holding spring. As a result, the biasing force of the holding spring may not be maintained in an appropriate state, and the holding of the stem by the holding conveyance belt may not be performed properly.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a stalk processing mechanism of a traveling stalk processor that pulls out and discharges stalks while traveling, nip and convey belts for conveying stalks are disposed on the right and left sides of the machine body, and the rear portion of the left and right nip and convey belts is configured to be rotatable left and right. Further, a holding spring for urging the left and right holding / conveying belt in the holding direction is provided, and a cover body for covering the holding spring is provided.

Further, the cover body is configured to be extendable.

Further, the cover body is configured to extend and contract in conjunction with the rotation of the rear portion of the right and left nipping and conveying belt.

[0007]

Next, an embodiment of the present invention will be described. FIG. 1 is an overall side view showing a traveling stalk processor equipped with a weeding guide of the present invention, FIG. 2 is an overall plan view thereof, and FIG. 3 is a sectional view showing a pivot point for pivotally supporting a stalk processing mechanism. 4 is a plan view showing a front portion of the scraping device and the nipping and conveying mechanism, FIG. 5 is a plan view showing a rear part of the nipping and conveying mechanism, FIG. 6 is a side view of FIG.
FIG. 8 is a side sectional view showing a scraper and a nipping and conveying belt, FIG. 8 is a side view showing another embodiment of the scraper, and FIG. 9 is a front view showing an urging spring for urging the left and right nipping and conveying belts.

First, an overall configuration of a traveling stalk processor as an embodiment of the present invention will be described. 1 and 2, a traveling mechanism B mainly includes left and right traveling wheels 11, an engine E, and a steering wheel H. A transmission case M is fixedly provided on the left side in the traveling direction of the engine E, and a crankshaft of the engine E transmits power to the inside of the transmission case M. After shifting within the transmission case M, power is transmitted to the traveling wheels 11 via the traveling drive case 13. A traveling frame 19 that supports the traveling mechanism B is provided from the engine E and the transmission case M to the front end of the fuselage, and the excavation plates 16 and 16 and the guide wheels GG provided on the left and right are It is supported by the traveling frame 19. A pivot point P is provided at an intermediate portion of the traveling frame 19 in the front-rear direction, and a stalk processing mechanism A including a raking device 14, a ridge pressing roller mechanism T, a nipping and conveying device F, and the like,
It is configured to be able to turn up and down around the pivot point P.

A front end of the traveling drive case 13 is mounted on a wheel height frame 17 projecting downward from the traveling frame 19 so as to be vertically adjustable by a bolt. Case M
Is pivotally supported by a pivot portion 18 so as to be rotatable up and down.
Therefore, by adjusting the mounting position of the traveling drive case 13 and the wheel height frame 17, the height of the traveling mechanism B with respect to the ground can be adjusted, whereby the height of the stalk processing mechanism A with respect to the height of the ridges can be adjusted. Is adjustable.

The engine E and the transmission case M that constitute the traveling mechanism B are integrally fixed, and the traveling frame 19 protrudes forward from the engine E and the transmission case M. A steering handle H projects upward and rearward from the traveling frame 19, and the steering handle H extends to above the engine E.
A PTO shaft projects from the front of the transmission case M, and a PTO joint shaft 15 is connected to the PTO shaft. A front end of the PTO joint shaft 15 is connected to a rotation center gear case K rotatably disposed on the traveling frame 19.
The pivot point P is provided on the rotation center gear case K.

The stalk processing mechanism A includes a scraping device 14
, A ridge holding roller mechanism T, a holding and conveying device F, and the like.
1 is pivotally supported by a horizontal drive shaft 25 in a rotation center gear case K, and the axis of the horizontal drive shaft 25 is set as a pivot point P. The support frame 46 of the ridge holding roller mechanism T
The left and right roller units 2L and 2R of the ridge pressing roller mechanism T are configured to be vertically rotatable and adjustable in vertical position. .

A rotating frame 40 is fixedly mounted on the horizontal drive shaft 25 so as to protrude downward, and an expandable and contractible pipe 41 is disposed below the engine E. And the lower end of the rotation frame 40 are rotatably connected. The telescopic pipe 41 is
By rotating an adjustment lever 42 rotatably attached to the rear end of the device 1, it is configured to expand and contract. When the adjusting lever 42 is rotated, the telescopic pipe 41 expands and contracts, and the rotating frame 40 rotates about the pivot point P, and the stem processing mechanism A is vertically rotated integrally with the rotating frame 40. I do. Thereby, the tip position of the stalk processing mechanism A can be adjusted in the vertical direction according to the ridge height. An elastic body S including a gas spring mechanism is interposed between the stalk processing mechanism A and the traveling mechanism B.

Drilling plates 16, 16 arranged at the tip of the fuselage
The guide wheels GG are supported by a traveling frame 19 that constitutes the traveling mechanism B. The moat plate 16 ・ 16
Is disposed at the tip of the frame 19, and is constituted by a plate-like member formed in a substantially triangular shape in a side view. Then, the moat plates 16 pass through the inside of the groove between the ridges, and dig up and raise the rooted rooted stalks in the groove, thereby forming a stalk processing mechanism A. It is transported to 14.14.

The stalks rooted in the soil are pulled up by the moating plates 16 and 16 and the stalks are scraped by the scraping tines 27 of the scraping devices 14. By transporting the potatoes upward and backward while being pinched by 24, and by pressing the potatoes in the ridges so as not to float up by the ridge pressing roller mechanism T, the original portions of the potato stalks are torn off. The original portion of the potato stalk can be cut by a cutter or the like, but there is a risk of damaging the potato.
With the action of pulling at 4, the stem is torn off.

When weeding is performed by the moating plates 16 and raked by the scraping devices 14, the stems prosper to the adjacent ridges, or the ridges of the adjacent ridges work. There are cases where stems are entangled due to entry into the ridges. If you pull the stem in such a state as it is, you may dig up the potatoes on the next unpressed ridge,
A stem cutting device C for preventing this is disposed at the tip of the frame 19. The stalk cutting device C is composed of reciprocating blades arranged in the vertical direction, and is provided with a stalk cutting device clutch mechanism in conjunction with the ON operation of the work clutch lever 81 for switching the drive of the stalk processing mechanism A or separately. Then, driving is started. A weeding guide 43 is disposed above the stalk cutting device C, the stalk above the ridge is guided to the stalk cutting device C by the weeding guide 43, and the stalks are scraped by the scraping devices 14. I am trying to put it. A crank portion including a crankcase 23 and the like is disposed on the side of the rotation center gear case K, and the stem portion driving device C is driven by the crank portion via the crank interlocking link 12. The drive clutch mechanism of the stem cutting device C is disposed in the rotation center gear case K.

The scraping tines 27.2 of the scraping devices 14 and 14
The stalks scraped and torn off by the stalk 7 are conveyed rearward by the nipping and conveying belt 24 while the stalking device 14.
4 is transferred to the transfer tines 26 of the sandwiching transfer mechanism F disposed rearward above the scraping devices 14.
Then, the sheet is further conveyed rearward by the conveying tine 26 and the nipping conveying belt 24 and discharged to the rear of the machine.
As described above, the stalk processing mechanism A includes the nipping and conveying belts 24 and 24 disposed from the front part to the rear part of the machine body, and the tines disposed and divided into two parts in front and rear above the nipping and conveying belts 24 and 24. The belt is constituted by a rake tine 27, which is a front belt, and a transport tine 26, which is a rear belt. The stem on the ridge is torn off, transported and discharged.

As shown in FIG. 2, the nipping / conveying device F is configured so that the stem discharging direction can be switched to the left and right by rotating the upper portion thereof left and right. If the holding and conveying device F is straightened without bending to the left and right, the stem can be dropped to the rear of the ridge for cutting the stem, and if bent to the left and right, the stem is discharged to the groove of the adjacent strip. In addition, the stem can be discharged into the groove of the next two or three adjacent strips. in this way,
In the present embodiment, it is configured to be rotatable in three stages on each side of the left and right, and to be able to adjust the discharge position switching to seven stages by adding the center position. The number of adjustment stages is not limited to the number of stages in the present embodiment, and may be appropriately set to an appropriate number of stages.

Next, FIG. 3 shows a power transmission configuration of the rotation center gear case K. A rack gear 20 is disposed on a drive shaft portion inside the rotation center gear case K, and the rack gear 20 and the PTO joint shaft 1
The pinion gear fixed to the front end of the gear 5 meshes with the pinion gear, and the pinion gear rotates the rack gear 20. The rotation of the rack gear 20 is transmitted to the horizontal drive shaft 25 by the bevel gears 22, and the drive shaft 25 drives the crankcase 23 that drives the crank link 12. Further, the conveyance belt drive shaft 31 is rotated by the rotation of the rack gear 20, and the nipping conveyance belt 24 is driven.

Next, the stalk processing mechanism A will be described. 4 to 6, in front of the stalk processing mechanism A, a scraping device 14 is disposed, and the scraping device 14 is mainly configured by a scraping tine 27 and pulleys 50, 51, and 52. ing. The pulleys 50 are pivotally supported by a drive shaft 31 that drives the stalk processing mechanism A. The pulleys 50 rotate integrally with the drive shaft 31 to form a pair of left and right scraping tines 27.
7 is driven. Nipping and conveying belts 24 are disposed from the front to the rear of the fuselage.
A pair of left and right transfer tines 26 is disposed above the rear portions of the nipping and conveying belts 24. These transport tines 26, the nipping transport belts 24, 24, etc., constitute a nipping transport device F.

The front portion of the nipping and conveying belt 24 is wound around drive pulleys 70 and 53. The drive pulley 70 is supported by a drive shaft 31 and is driven by the drive shaft 31. A sprocket is fitted on the shaft 32 that supports the drive shaft 31 and the drive pulley 53, and a chain 36 is wound around both sprockets so that the drive pulley 53 is driven in conjunction with the drive pulley 70. I have. Tension rollers 54 are disposed between the driving pulley 70 and the driving pulley 53, and the tension rollers 54 are urged to press the inside of the nipping and conveying belt 24 to tension the nipping and conveying belt 24. The left and right tension rollers 54 are alternately arranged at different positions, and are respectively urged by the nipping and conveying belts 24 in a direction in which the stems can be nipped. Also, the driving pulley 53
An outside tension roller 55 that tensions the nipping and conveying belt 24 from the outside is disposed behind the outside.

Behind the driving pulley 70, a pulley 58
60 are disposed, and the nipping and conveying belt 24 is wound. The driving pulley 70 and the pulley 58 are
, And the pulley 58 and the pulley 60 are connected to the support rod 65 and the urging rod 80 and the like. Between the pulley 58 and the pulley 60, triple tension rollers 59, 59, 59 are disposed, and the triple tension rollers 59, 59, 59 are connected by a connecting rod 66. The connecting rod 66 is connected to the supporting rod 65 by two urging arms 67 and is urged inward. The left and right triple tension rollers 59, 59
The tension rollers 59 are arranged so as to be staggered, so that the inside of the nipping and conveying belt 24 is uniformly pressed so that the stem can be reliably nipped.

When the rear end of the holding and conveying device F is rotated left and right, the drive pulley 70 is bent and the pulley 5 is moved.
8 is bent, and the rear part of the nipping and conveying belt 24 is rotated. Outside the driving pulleys 70, two outer tension rollers 56 and 57 are disposed, and the rear part of the nipping and conveying belt 24 is rotated. Depending on the degree, the rollers 56 and 57
One or both are configured to tension the sandwiching and conveying belt 24 from the outside. The left and right pulleys 58
A compression spring 75 serving as a holding spring is provided between the rotation shafts 34 supporting the 58 and between the left and right support rods 65.
・ 75 are interposed, and the right and left holding / conveying belts 24 ・ 24
Is biased in a direction to clamp the stem. The reduction spring 75
75 is covered with a protective cover that can be extended and retracted. In FIG. 6, the urging rod 80 is urged in the front-rear protruding direction by an urging spring 76 to tension the nipping and conveying belt 24.

The transport tine 26 is disposed above the rear portion of the nipping transport belt 24. The transport tine 26 is wound around pulleys 68 and 69. The pulley 69 is supported by a shaft 33 that supports the pulley 60, and rotates integrally with the shaft 33 that is driven by the rotation of the nipping and conveying belt 24. The pulley 68 is located substantially above the drive shaft 31. The scraping tines 14 and 14 are covered with scraping tine covers 72 and 72 above the transport tine 26, and the transport tines 26 and 26 are transported above the transport tine covers 73 and 7.
3 is covered. Then, the scraping tine cover 72
Rotation covers 74 that cover the front ends of the transport tines 26 and the inside of the front ends are disposed at the rear end of the transport tine 72. The transported stem is protected from being caught between the pulley 68 and the transport tines 26.

The pulleys 53, 58, 60 and 70 have a scraper 61, and the pulleys 51 and 52 have a scraper 63.
64, the scrapers 62 are provided on the tension rollers 54 and 59, and the scrapers 91 are provided on the outer tension rollers 56 and 57. It is configured to scrape off soil and mud that has adhered. The pulleys 50, 68, and 69 are also provided with scrapers.

Scrapers 61, 62, 63, 64, 91
And the like are formed in a shape corresponding to the outer peripheral surface of the pulley or the tension roller to be disposed, so that the stem, soil, mud, and the like can be reliably scraped off. For example, as shown in FIG. 7, a concave portion 60 a is formed in a substantially V shape on the outer peripheral surface of the pulley 60, and a scraper 61 fixed to the support rod and disposed on the pulley 60 includes: A convex portion 61a having the same shape as the concave portion 60a is formed, and is fitted into the concave portion 60a and brought close to the concave portion 60a. As shown in FIG. 8, a scraper 91 formed in a substantially flat plate shape is disposed close to the outer tension rollers 56 and 57 formed in a substantially cylindrical shape.
The above-mentioned scraper can be provided in sliding contact with an arranged pulley or tension roller.

In FIG. 7, the nipping and conveying belt 24
Has a flat belt-like outer surface, which is a sandwiching surface, and a convex portion 24a, which is a belt separation preventing member, is formed on the inner surface thereof. The convex portion 24a is provided with pulleys 53, 58, and 60.
70 and substantially V-shaped recesses formed on the outer peripheral surfaces of the tension rollers 54 and 59 (for example, the recess 6 in the pulley 60).
0a) to form the concave and convex portions 24a.
Are configured to mesh with each other so that the nipping / conveying belt 24 wound around the pulley and the tension roller does not easily come off. Incidentally, such a belt separation preventing member is provided by the scraping tine 27 and the transport tine 26.
Are similarly formed.

The reduction spring 75 is interposed between support rods 79 fixed to the lower ends of the left and right rotation shafts 34, as shown in FIG. 9, for example. The reduction spring 75
Is covered by protective covers 76 and 77 formed in a substantially cylindrical shape, and the protective cover 76 is slidably fitted in the protective cover 77 having a larger diameter than the protective cover 76. Pins 78, 78 penetrate the outer ends of the protective covers 76, 77 in a direction perpendicular to the axial direction, respectively. When the reduction spring 75 is extended, the pins 78, 78
It is configured to be locked at the end of the.

When the reduction spring 75 is extended, the pins 78, 78 locked at the ends of the reduction spring 75 move outward, and the protective covers 76, 77 move outward. Conversely, when the extended reduction spring 75 contracts,
The outer ends of the protective covers 76, 77 abut against the support rods 79, 79, and with the contraction of the reduction spring 75, the protective covers 76, 77
77 move inward respectively. Further, even when the rear portion of the nipping / conveying belt 24 is rotated and the reduction spring 75 is extended to the maximum, the protective cover 76 remains fitted in the protective cover 77. Even in the rotating state, the entirety of the reduction spring 75 is always covered by the protective covers 76 and 77.

As described above, the protective covers 76, 77 extend and contract integrally with the reduction springs 75, 75 which extend and contract in conjunction with the rotation of the rear portions of the nipping and conveying belts 24, 24. Since the stems 76 and 77 are configured to cover, the stems conveyed by the nipping and conveying belts 24
The reduction spring 75 does not drop during the conveyance or comes into contact with the reduction springs 75 and 75 and is entangled with the reduction spring 75, and soil or mud attached to the stem does not fall and adhere to the reduction spring 75. Reference numeral 75 can always maintain an appropriate urging force, and can surely urge the left and right nipping transport belts 24 in the direction of nipping the stem. Thereby, the stalks can be reliably held by the holding / conveying belts 24 with an appropriate holding force.

As described above, the reduction spring 75 interposed between the left and right support rods 65, 65 is also used.
Is provided.

[0031]

As described above, the present invention has the following advantages. That is, as described in claim 1, a nip spring is provided to urge the left and right nip conveying belt in the nip direction, and a cover body that covers the nip spring is provided. It is possible to prevent the reduction spring from maintaining an appropriate biasing force without dropping, contacting the reduction spring, entanglement with the reduction spring, and soil or mud adhering to the stem falling and adhering to the reduction spring. Done,
The left and right nipping conveyor belts were able to reliably pinch the stem with an appropriate nipping force.

Further, since the cover body is configured to be expandable and contractable as described in claim 2, even if the rear portion of the nipping and conveying belt rotates right and left and the reduction spring expands and contracts, it is adjusted to the expansion and contraction state of the reduction spring. The cover body can be extended and contracted to a predetermined length, and the entire reduction spring is always covered by the cover body, and the reduction spring can always maintain an appropriate biasing force, and the left and right sandwiching conveyance belts Thus, the stem could be always held with an appropriate holding force.

In addition, since the cover body is configured to expand and contract in conjunction with the rotation of the rear portion of the left and right holding and conveying belt, the rear portion of the holding and conveying belt rotates right and left to reduce the spring. Even if the expansion and contraction occurs, the cover body automatically expands and contracts to the length according to the expansion and contraction state of the reduction spring, so that the entire reduction spring is always covered by the cover body, and special work is performed. In addition, the left and right holding and conveying belts were able to hold the stem reliably and always with an appropriate holding force.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a traveling stem processing machine provided with a weeding guide of the present invention.

FIG. 2 is an overall plan view of the same.

FIG. 3 is a cross-sectional view showing a pivot point for pivotally supporting a stem processing mechanism.

FIG. 4 is a plan view showing a scraping device and a front portion of a nipping and conveying mechanism.

FIG. 5 is a plan view showing the rear part of the nipping and conveying mechanism.

FIG. 6 is a side view of the same.

FIG. 7 is a side sectional view showing a scraper and a nipping and conveying belt.

FIG. 8 is a side view showing another embodiment of the scraper.

FIG. 9 is a front view showing an urging spring for urging the left and right nipping and conveying belts.

[Explanation of symbols]

 A Stem processing mechanism B Running mechanism C Stem cutting device E Engine F Nipping and conveying device H Handle K Rotating center gear case M Transmission case T Ridge pressing roller mechanism 24 Nipping and conveying belt 34 Rotating shaft 75 Reduction spring 76, 77 Protective cover 78 Pin 79 Support rod

Claims (3)

[Claims] In a stalk processing mechanism of a traveling stalk processor for pulling out and discharging stems while traveling, a nip-conveying belt for conveying stalks is disposed on the left and right sides of the body, and a rear portion of the left-right nip-conveying belt is rotated left and right. A stalk processing mechanism for a traveling stalk processor, wherein the stalk processing mechanism is configured to be capable of providing a holding spring for urging the left and right holding and conveying belts in the holding direction, and to provide a cover body for covering the holding spring. 2. A stem processing mechanism of a traveling stem processing machine according to claim 1, wherein said cover body is configured to be extendable and contractible. 3. The stalk processing mechanism of the traveling stalk processor according to claim 2, wherein the cover body is configured to extend and contract in conjunction with a rotation operation of a rear portion of the left and right nipping and conveying belt. Stem processing mechanism of the stalk processing machine.