JP3712500B2 - Stem treatment mechanism of traveling stem treatment machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a traveling stalk processing machine capable of tearing stalks such as sweet potatoes and potatoes cultivated in high anther and flat cocoons from the roots, scraping them up by a conveying device, and collecting them on the side of the cocoons away from the cocoons .
[0002]
[Prior art]
Conventionally, a traveling stalk processing machine that uses a squeezing device to stalk stems such as sweet potatoes and potatoes and pulls them up with a nipping and conveying device, and tears between the stalks in the cocoon and the stalks. Has been made.
In the stalk processing mechanism of this traveling stalk processing machine, a stake tine, a sandwiching transport belt, etc. are provided for transporting and discharging the stalk to the rear side of the rake machine body and wound around a pulley, a tension roller, etc. It was.
[0003]
[Problems to be solved by the invention]
However, the stalk that is transported by being entangled with the pulley or tension roller of the stem processing mechanism as described above, or soil or mud adheres to it, and between the pulley and tension roller and the belt, etc. As a result, the belt or the like is detached.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
In Claim 1, it is a traveling-type stem treatment machine which presses so that the cocoon in the cocoon does not float by the heel-pressing roller mechanism T while traveling, and tears and removes the original portion of the stem, The sandwiching and transporting device F is constituted by the right and left sandwiching and transporting belts 24 that are transported in such a manner that the sandwiching and transporting device F can switch the discharge direction of the stem to the left and right by rotating the upper part to the left and right. When the rear end of F is rotated left and right, the drive pulley 70 is refracted and the rear portion of the conveyor belt 24 is rotated. The front portion of the sandwich conveyor belt 24 is driven by the drive shaft 31 of the drive pulley 70. It is wound around a front drive pulley 53 that is driven by a chain, and the drive pulley 70 is pivotally supported by the drive shaft 31. The rear portion of the sandwiching conveyor belt 24 from the drive pulley 70 is the front pulley 58 and the rear pulley. 60, the driving pulley 70 and the front pulley 58 are rotatably connected by a rotating arm 71, the front pulley 58 and the rear pulley 60 are connected by a support rod 65, and the rotating arm 71 is connected. Further, scrapers 61 and 62 are provided so as to protrude from the belt winding surface of the pulley, which is supported by a support rod 65, and removes deposits on the belt winding surface .
[0005]
In claim 2, in the stem processing mechanism of the traveling type stem processing machine according to claim 1, a concave portion 60a is formed in a substantially V shape on the outer peripheral surface of the pulley 60, and the shape is matched with the concave portion 60a. The detachment prevention member 24a is formed on the inner side surface of the holding and conveying belt 24, and the outer side surface, which is the holding surface of the holding and conveying belt 24, is formed in a flat belt shape .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
FIG. 1 is an overall side view showing a traveling stalk processing machine provided with a weed guide of the present invention, FIG. 2 is an overall plan view, and FIG. 3 is a cross-sectional view showing a pivot point that pivotally supports a stalk processing mechanism. 4 is a plan view showing the front part of the clamping device and the nipping / conveying mechanism, FIG. 5 is a plan view showing the rear part of the nipping / conveying mechanism, FIG. 6 is a side view, and FIG. 7 is a side sectional view showing the scraper and the nipping / conveying belt. 8R> 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.
[0007]
First, the whole structure of the traveling type stem processing machine as an Example of this invention is demonstrated. 1 and 2, the traveling mechanism B is mainly composed of left and right traveling wheels 11, 11, an engine E, and a steering handle H. A transmission case M is fixed to the left side of the traveling direction of the engine E, and the crankshaft of the engine E transmits power to the inside of the transmission case M.
[0008]
After shifting in the transmission case M, power is transmitted to the traveling wheels 11 and 11 via the traveling drive case 13. A traveling frame 19 that supports the traveling mechanism B is disposed from the engine E and the transmission case M to the front end of the aircraft, and the excavating plates 16 and 16 and the guide wheels G and G provided on the left and right are The traveling frame 19 is supported. A pivot point P is provided in the middle of the traveling frame 19 in the front-rear direction, and a stem processing mechanism A composed of the scraping devices 14, 14, a roller pressing roller mechanism T, a nipping / conveying device F, etc. It is configured to be vertically rotatable around P.
[0009]
The front end of the traveling drive case 13 is attached to a wheel height frame 17 projecting downward from the traveling frame 19 so that the vertical position can be adjusted by bolts, and the rear end of the traveling drive case 13 is attached to the transmission case M. On the other hand, it is pivotally supported by the pivotal support 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. Is adjustable.
[0010]
The engine E and the transmission case M constituting the traveling mechanism B are integrally fixed, and the traveling frame 19 projects forward from the engine E and the transmission case M. A steering handle H projects from the traveling frame 19 upward and rearward, and the steering handle H extends to above the engine E. A PTO shaft projects from the front of the mission case M, and a PTO joint shaft 15 is connected to the PTO shaft. The front end of the PTO joint shaft 15 transmits power to a rotation center gear case K rotatably disposed on the traveling frame 19, and the pivot point P is provided on the rotation center gear case K. ing.
[0011]
The stalk processing mechanism A is integrally composed of a scraping device 14, 14, a heel presser roller mechanism T, a nipping / conveying device F, and the like, and the drive shaft 31 of the stalk processing mechanism A is the center of rotation. The horizontal drive shaft 25 in the gear case K is pivotally supported, and the axis of the horizontal drive shaft 25 is a pivot point P. The support frame 46 of the eaves pressing roller mechanism T is suspended from a bracket 49 fixed to the lower surface of the front portion of the nipping and conveying apparatus F, and the left and right roller units 2L and 2R of the eaves pressing roller mechanism T can be rotated up and down. Moreover, it is comprised so that vertical position adjustment is possible.
[0012]
Further, a rotating frame 40 is fixed to the horizontal drive shaft 25 so as to protrude downward, and an extendable pipe 41 configured to be extendable is disposed below the engine E. The lower end of the rotation frame 40 is rotatably connected. The telescopic pipe 41 is configured to expand and contract by rotating an adjustment lever 42 that is rotatably attached to the rear end of the pipe 41. When the adjustment lever 42 is rotated, the telescopic pipe 41 is expanded and contracted, and the rotating frame 40 is rotated around the pivot point P, and the stem processing mechanism A is rotated up and down integrally with the rotating frame 40. To do.
Thereby, according to the ridge height, the tip position of the stem processing mechanism A can be adjusted in the vertical direction. An elastic body S composed of a gas spring mechanism or the like is interposed between the stem processing mechanism A and the traveling mechanism B.
[0013]
The excavation plates 16 and 16 and the guide wheels G and G disposed at the front end of the machine body are supported by a traveling frame 19 that constitutes the traveling mechanism B. The excavation plates 16 and 16 are disposed at the front end of the frame 19 and are constituted by plate-like members formed in a substantially triangular shape in a side view. The digging plates 16 and 16 pass through the inside of the groove between the ridges and dig up the stem in a state of rooting in the groove to form a stalk processing mechanism A. It is conveyed to the devices 14 and 14.
[0014]
The stems rooted in the grooves are pulled up by the excavation plates 16 and 16, the stems are picked up by the picking tines 27 and 27 of the picking devices 14 and 14, and are held by the holding and conveying belt 24 of the holding and conveying device F In addition, while being conveyed upward and rearward, the heel in the heel is pressed by the heel presser roller mechanism T so as not to be lifted, thereby tearing off the original portion of the stem. Although the stem portion of the stem can be cut with a cutter or the like, there is a risk that the stem may be damaged. Yes.
[0015]
In addition, when weeding with the excavation plates 16 and 16 and scrambling with the scraping devices 14 and 14, the stalk grows up to the next ridge, or the next heel stalk enters the ridge where the work is performed Sometimes the stems are drowning. If the stalk in such a state is pulled as it is, there is a risk of digging up the heel of the adjacent cocoon that has not been pressed. Therefore, a stalk cutting device C for preventing this is provided at the tip of the frame 19. are doing. The stem cutting device C is composed of a reciprocating blade arranged in the vertical direction, and in conjunction with the ON operation of the work clutch lever 81 for switching the driving of the stem processing mechanism A, or separately provided with a stem cutting device clutch mechanism. And is configured to start driving.
A weeding guide 43 is arranged above the stem cutting device C, the stem above the heel is guided to the stem cutting device C by the weeding guide 43, and the stems are scraped by the scraping devices 14 and 14. I'm trying to Further, a crank portion composed of a crankcase 23 and the like is disposed on the side of the rotation center gear case K, and the stem cutting device C is driven by the crank portion via the crank interlocking link 12. The rotation center gear case K is provided with a drive clutch mechanism of the stem cutting device C.
[0016]
The stems that have been scratched and torn off by the scavenging tines 27 and 27 of the scoring devices 14 and 14 are transported rearward by the sandwiching transport belt 24, and are then transported from the scoring devices 14 and 14. The transfer tines 26 and 26 of the nipping / conveying mechanism F disposed on the upper rear side are inherited. Then, it is further transported rearward by the transport tine 26 and the sandwiching transport belt 24 and discharged to the rear of the machine body. As described above, the stem processing mechanism A includes the sandwiching and conveying belts 24 and 24 disposed from the front part of the machine body to the rear part, and the tine disposed in the front and rear portions of the sandwiching belts 24 and 24. The tine 27, 27, which is the front belt of the belt, and the conveyance tine 26, which is the rear belt, tear the stem on the ridge, convey it and discharge it.
[0017]
As shown in FIG. 2, the holding and conveying device F is configured such that the discharging direction of the stem can be switched to the left and right by rotating the upper part to the left and right. If the holding and conveying device F is made straight without bending left and right, the stalk can be dropped behind the ridge that is cutting the stem, and if it is bent left and right, it is discharged into the groove of the adjacent strip. Or, the stem can be discharged into the groove of the strip adjacent to 2 or 3 strips. Thus, in this embodiment, it is configured such that it can be rotated in three stages each on the left and right, and the discharge position switching adjustment can be performed in seven stages by adding the center position. The number of adjustment stages is not limited to the number of stages in this embodiment, and may be appropriately configured to an appropriate number of stages.
[0018]
Next, in FIG. 3, the power transmission structure of the rotation center gear case K is shown. A rack gear 20 is disposed on a drive shaft portion inside the rotation center gear case K, and the rack gear 20 meshes with a pinion gear fixed to the tip of the PTO joint shaft 15 so that the pinion gear is engaged. Is rotating 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 21, and the crankcase 23 that drives the crank interlocking link 12 is driven by the drive shaft 25. 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.
[0019]
Next, the stem processing mechanism A will be described.
4 to 6, the scraping devices 14 and 14 are disposed in the front portion of the stem processing mechanism A, and the scraping device 14 mainly includes a scraping tine 27 and pulleys 50, 51, and 52. ing. The pulleys 50 and 50 are supported by a drive shaft 31 that drives the stem processing mechanism A, and the pulleys 50 and 50 rotate integrally with the drive shaft 31 to drive a pair of left and right scraping tines 27 and 27. To do.
Nipping and conveying belts 24 and 24 are disposed from the front to the rear of the machine body, and the front portions of the holding and conveying belts 24 and 24 are located below the scraping devices 14 and 14, and the rear portions of the holding and conveying belts 24 and 24. A pair of left and right transport tines 26, 26 are disposed above. These transport tines 26, 26 and the sandwich transport belts 24, 24 constitute a sandwich transport device F.
[0020]
The front portion of the holding and conveying belt 24 is wound around a drive pulley 70 and a front drive pulley 53 , and the drive pulley 70 is supported by the drive shaft 31 and driven by the drive shaft 31. A sprocket is fitted on the shaft 32 that supports the drive shaft 31 and the front drive pulley 53, and a chain 36 is wound around both sprockets so that the front drive pulley 53 is driven in conjunction with the drive pulley 70. It is configured. Tension rollers 54 and 54 are disposed between the drive pulley 70 and the front drive pulley 53, and are urged to press the inside of the pinch transport belt 24, thereby tensioning the pinch transport belt 24. . The left and right tension rollers 54 and 54 are alternately shifted in position, and the nipping and conveying belts 24 and 24 respectively bias the stems in a direction in which the stems can be nipped. Further, an outer tension roller 55 is disposed behind the front drive pulley 53 to tension the nipping and conveying belt 24 from the outside.
[0021]
A front pulley 58 and a rear pulley 60 are disposed behind the drive pulley 70, and the nipping / conveying belt 24 is wound thereon. The driving pulley 70 and the front pulley 58 are rotatably connected by a rotating arm 71, and the front pulley 58 and the rear pulley 60 are connected to a support rod 65, a biasing rod 80, and the like. Triple tension rollers 59, 59, and 59 are disposed between the front pulley 58 and the rear pulley 60, and the triple tension rollers 59, 59, and 59 are connected by a connecting rod 66. The connecting rod 66 is connected to the supporting rod 65 by two biasing arms 67 and 67 and is biased inward. The left and right triple tension rollers 59, 59, 59 are arranged so that the respective tension rollers 59 are staggered, and are configured so that the stems can be securely clamped by pressing the inside of the clamping transport belt 24 evenly. .
[0022]
When the rear end of the nipping / conveying device F is turned to the left and right, the portion of the driving pulley 70 is refracted and the front pulley 58 is bent, and the rear portion of the nipping / conveying belt 24 is rotated. The outer side tension rollers 56 and 57 are arranged outside of the belt, and one or both of the rollers 56 and 57 tension the pinch conveyance belt 24 from the outside depending on the degree of rotation of the rear portion of the pinch conveyance belt 24. It is composed.
In addition, reduction springs 75 and 75 are interposed between the rotating shafts 34 and 34 that support the left and right front pulleys 58 and 58 and between the left and right support rods 65 and 65, so 24 and 24 are urged in a direction to sandwich the stem. The reduction springs 75 and 75 are covered with a protective cover configured to be extendable. In FIG. 6, the urging rod 80 is urged in the front-rear projecting direction by the urging spring 76, and tensions the nipping / conveying belt 24.
[0023]
Conveying tines 26 and 26 are disposed above the rear portions of the nipping and conveying belts 24 and 24, and the conveying tines 26 are wound around pulleys 68 and 69. The pulley 69 is supported by the shaft 33 that supports the pulley 60, and rotates integrally with the shaft 33 that is driven by the rotation of the holding and conveying belt 24. The pulley 68 is located substantially above the drive shaft 31. Further, the above-described scavenging tines 14 and 14 are covered with scavenging tine covers 72 and 72, and the transport tines 26 and 26 are covered with transporting tine covers 73 and 73 above. Further, at the rear ends of the take-in tine covers 72 and 72, rotational covers 74 and 74 that cover the front ends and the inside of the front ends of the conveyance tines 26 and 26 are disposed, and in particular, the rear portions of the nipping and conveying belts 24 and 24 are provided. When it rotates, the stem that is nipped and conveyed is protected from being caught between the pulley 68 and the conveying tines 26 and 26.
[0024]
The pulleys 53, 58, 60, and 70 are provided with scrapers 61, the pulleys 51 and 52 are provided with scrapers 63 and 64, the tension rollers 54 and 59 are provided with scrapers 62, and the outer tension rollers 56 and 57 are provided with scrapers 91. The pulleys and tension rollers are arranged in the vicinity of the outer peripheral surface so as to scrape off the stems entangled with the outer peripheral surface and the attached soil and mud. The pulleys 50, 68, and 69 are similarly provided with scrapers.
[0025]
The scrapers 61, 62, 63, 64, 91, etc. are formed in a shape corresponding to the outer peripheral surface of the arranged pulley or tension roller, and are configured so that the stem, soil, mud, etc. can be scraped off reliably. . For example, as shown in FIG. 7, a recess 60 a is formed in a substantially V shape on the outer peripheral surface of the pulley 60, and the 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 so as to be close to each other. Further, as shown in FIG. 8, a scraper 91 formed in a substantially flat plate shape is disposed in close proximity to the outer tension rollers 56 and 57 formed in a substantially cylindrical shape.
Note that the above-described scraper can be provided in sliding contact with a provided pulley or tension roller.
[0026]
In FIG. 7, the holding and conveying belt 24 has a flat belt-like outer surface that is a holding surface, and a convex portion 24a that is a belt detachment preventing member is formed on the inner surface thereof. The convex portion 24a is formed in a shape combined with a substantially V-shaped concave portion (for example, the concave portion 60a in the pulley 60) formed on the outer peripheral surfaces of the pulleys 53, 58, 60, and 70 and the tension rollers 54 and 59, The concave portion and the convex portion 24a are configured to mesh with each other so that the holding and conveying belt 24 wound around the pulley and the tension roller is not easily detached.
Note that such a belt detachment preventing member is formed in the same manner in the scraping tine 27 and the conveying tine 26 as well.
[0027]
For example, as shown in FIG. 9, the reduction spring 75 is interposed between support rods 79 and 79 fixed to the lower ends of the left and right rotation shafts 34 and 34. The reduction spring 75 is covered with protective covers 76 and 77 formed in a substantially cylindrical shape, and the protective cover 76 is slidably fitted into a protective cover 77 having a larger diameter than the protective cover 76. Pins 78 and 78 pass through the outer ends of the protective covers 76 and 77 in a direction perpendicular to the axial direction, respectively. When the reduction spring 75 is extended, the pins 78 and 78 are the ends of the reduction spring 75. It is comprised so that it may latch on a part.
[0028]
When the reduction spring 75 is extended, the pins 78 and 78 locked to the ends of the reduction spring 75 are moved outward and the protective covers 76 and 77 are moved outward. Conversely, when the extended reduction spring 75 is reduced, the outer ends of the protective covers 76 and 77 come into contact with the support rods 79 and 79, and the protective covers 76 and 77 move inward as the reduction spring 75 is reduced. . Further, even when the rear portion of the nipping / conveying device F is rotated and the reduction spring 75 is extended to the maximum, the protective cover 76 is kept in the state of being fitted into the protective cover 77. Even in the state, the reduction spring 75 is always covered with the protective covers 76 and 77.
[0029]
Since the reduction spring 75 is covered with the protective covers 76 and 77 configured as described above, the stem conveyed by the holding conveyance belt 24 becomes entangled with the reduction spring 75, or soil or mud adhering to the stem falls and the Without being attached to the reduction spring 75, the reduction spring 75 can always maintain an appropriate urging force, and can reliably urge the left and right nip-conveying belts 24, 24 in the direction of clamping the stem. it can.
[0030]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
A traveling stalk processing machine as claimed in claim 1, wherein the heel in the heel is pressed so as not to be lifted by the heel presser roller mechanism T while traveling, and the stem portion of the stalk is torn and discharged. The sandwiching and transporting device F is configured by the sandwiching and transporting belts 24 that are sandwiched and transported, and the sandwiching and transporting device F can switch the discharge direction of the stem to the left and right by rotating the upper part to the left and right. When the rear end of the device F is rotated left and right, the drive pulley 70 is refracted and the rear portion of the conveyor belt 24 is rotated. The front portion of the holding conveyor belt 24 is the drive shaft 31 of the drive pulley 70. It is wound around a front drive pulley 53 that is further chain driven, and the drive pulley 70 is pivotally supported by the drive shaft 31. The rear portion of the sandwiching conveyor belt 24 from the drive pulley 70 is the front pulley 58 and the rear pulley. 60, the driving pulley 70 and the front pulley 58 are rotatably connected by a rotating arm 71, the front pulley 58 and the rear pulley 60 are connected by a support rod 65, and the rotating arm 71 is connected. Further, scrapers 61 and 62 that support the belt winding surface of the pulley and remove deposits on the belt winding surface protrude from the pulley belt winding surface, and therefore, the front pulley 58 and the rear pulley 60 that are the rolling elements. The stalk entangled with the outer peripheral surface, which is the torsion winding surface of the sandwiching and conveying belt 24, dirt, mud, and the like can be removed, and the rear part of the sandwiching and conveying device F can be rotated left and right. It was possible to prevent the sandwiching and conveying belt 24 from being detached from the rolling elements such as the front pulley 58 and the rear pulley 60.
[0031]
According to a second aspect of the present invention, a recess 60a is formed in a substantially V shape on the outer peripheral surface of the pulley 60 , and a detachment preventing member 24a having a shape matching that of the recess 60a is formed on the inner surface of the nipping and conveying belt 24. Since the outer surface, which is the clamping surface of the clamping conveyance belt 24, is formed in a flat belt shape , the detachment prevention member 24a and the recess 60a mesh between the clamping conveyance belt 24 and the rear pulley 60, so that the clamping conveyance belt 24 is engaged. It was possible to prevent the slippage.
[Brief description of the drawings]
FIG. 1 is an overall side view showing a traveling stalk processing machine provided with a weed guide according to the present invention.
FIG. 2 is an overall plan view of the same.
FIG. 3 is a cross-sectional view showing a pivot point that pivotally supports a stem processing mechanism.
FIG. 4 is a plan view showing a front portion of a scavenging device and a nipping and conveying mechanism.
FIG. 5 is a plan view showing a rear portion 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 sandwich conveying belt.
FIG. 8 is a side view showing another embodiment of the scraper.
FIG. 9 is a front view showing a biasing spring that biases the left and right nipping and conveying belts.
[Explanation of symbols]
A Stem processing mechanism B Traveling mechanism C Stem cutting device E Engine F Nipping and conveying device H Handle K Rotating center gear case M Mission case T 畝 Holding roller mechanism 24 Nipping and conveying belt 24a Convex part (detachment prevention member)
26 Conveying tine 27 Staking tine 61/62 Scraper 74 Rotating cover

Claims (2)

This is a traveling stalk processing machine that presses the cocoon in the cocoon so that it does not rise while traveling and tears off the original part of the stalk and discharges it. The sandwiching / conveying device F is configured by the sandwiching / conveying belt 24. The sandwiching / conveying device F can switch the discharge direction of the stem to the left / right by rotating the upper part to the left / right, and the rear end of the sandwiching / conveying device F is set to the left / right In the configuration in which the drive pulley 70 is refracted and the rear portion of the conveyor belt 24 is rotated.
The front portion of the holding and conveying belt 24 is wound around a front drive pulley 53 that is chain-driven by the drive shaft 31 of the drive pulley 70, and the drive pulley 70 is pivotally supported by the drive shaft 31,
A front pulley 58 and a rear pulley 60 are disposed on the rear side of the driving pulley 70 of the nipping / conveying belt 24. The driving pulley 70 and the front pulley 58 are rotatably connected to each other by a rotating arm 71. The pulley 58 and the rear pulley 60 are connected by a support rod 65,
A traveling stalk processing machine characterized in that scrapers 61 and 62 for removing deposits on the belt winding surface are provided on the belt winding surface of the pulley supported by the rotating arm 71 and the support rod 65. Stem processing mechanism. In the stalk processing mechanism of the traveling stalk processing machine according to claim 1, a recess 60 a is formed in a substantially V shape on the outer peripheral surface of the pulley 60, and a detachment preventing member 24 a that matches the shape of the recess 60 a is provided. A stalk processing mechanism of a traveling stalk processing machine, characterized in that it is configured on the inner side surface of the sandwiching and transporting belt 24, and the outer surface, which is the sandwiching surface of the sandwiching and transporting belt 24, is formed in a flat belt shape .

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