JP2009131157A5 - - Google Patents

Description

Pulling machine

  The present invention relates to a drawing work machine that holds and removes the foliage of a crop such as ginger that is vegetated in a field and cuts and processes the foliage portion.

Conventionally, as a drawing machine, as shown in Patent Document 1, the stalks and leaves of a crop are sandwiched and pulled out, the stalks and leaves are cut while the crops are transported to the rear of the machine, and the cut stalks and leaves are put into the field with a stalk and leaf discharge device. There is something to discharge.
JP 2006-109783 A

  However, the drawing machine shown in Patent Document 1 has a configuration in which a plurality of tension rollers for tensioning the left and right conveyor belts constituting the clamping conveyor device are mounted on a support member and rotated at a fixed position. Therefore, it is only possible to apply a constant clamping force regardless of the amount of the foliage that is pinched, and if a large amount of crop is supplied at once, the foliage is clogged or the pinch transport device is damaged There is.

  In addition, the conventional holding and conveying apparatus has no mechanism for releasing the holding state of the left and right conveying belts when a large amount of foliage enters between the right and left conveying belts or the foliage gets tangled around the surrounding rollers and pulleys. In addition, there is a problem that the foliage cannot be removed unless the entire apparatus is disassembled, and the maintainability is poor.

The present invention has taken the following technical means in order to solve the above problems.
Invention of claim 1, wherein, only set the crop clamping and conveying device for conveying to sandwich the pull body backward foliage (K) of (G) (49) of vegetation in the field, foliage from該挟lifting transfer apparatus (49) taking over (K) in Hai Ha device (81) is provided with drawing work machine for discharging to the left and right outside of the fuselage,該挟lifting transfer apparatus (49), interposed pinching the foliage (K) Jimutantai (35L, 35R) , a pair of rotatable left and right roller frames (40L, 40R), a plurality of tension rollers (39L, 39R) provided rotatably on the roller frame (40L, 40R), and the roller frame (40L, 40R), the tension springs (47F, 47R) for bringing the tension rollers (39L, 39R) into contact with the inner peripheral surface of the clamping action portion of the clamping endless bands (35L, 35R), and the roller frame 40L, and the drawing working machine, characterized by being configured from a lock lever (42) for switching the 40R) in a rotatable state and unrotatable state.

According to a second aspect of the present invention, the tension springs (47F, 47R) are provided on the left and right sides of the roller frame (40L, 40R), and the lock lever (42) is provided on the left and right sides of the roller frame (40L, 40R). The drawing work machine according to claim 1, wherein:

The invention according to claim 3 is characterized in that a pair of tension springs (47F, 47R) are provided in the front and rear, and the tension of the rear tension spring (47R) is set to be weaker than the tension of the front tension spring (47F). The drawing work machine according to claim 1 or 2 .

The invention according to claim 4 is characterized in that a rear tension roller (45, 46) is provided behind the tension roller (39L, 39R) in the transport direction and outside the machine body. It was a machine .

According to the first and second aspects of the present invention , the endless belt (35L) sandwiching the roller frame (40L, 40R) having a plurality of tension rollers (39L, 39R) with the tension spring (47F, 47R) capable of adjusting the clamping force. , 35R) is configured to press against the inner peripheral surface of the clamping action portion, the clamping force of the clamping conveyance device (49) can be changed according to the growth situation of the foliage (K) of the crop (G). Therefore, if the clamping force is increased, the crop (G) can be reliably pulled out from the field.
Further, if the clamping force of the tension springs (47F, 47R) is adjusted and the clamping force of the clamping and conveying device (49) is weakened, even if the foliage (K) grows, it becomes easy to be released from the clamping state. The device (49) is prevented from being clogged with foliage and the work efficiency is improved.
And by providing the lock lever (42) which switches the roller frame (40L, 40R) between a rotatable state and a non-rotatable state, even if the foliage (K) is clogged in the holding and conveying device (49). By operating the lock lever (42) and rotating the roller frame (40L, 40R), the clamping force of the clamping / conveying device (49) can be weakened, so that the foliage (K) can be easily removed and maintained. Improves.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the tension of the rear tension spring (47R) is set to be weaker than the tension of the front tension spring (47F). Thus, the clamping force on the clamping conveyance start end side of the clamping conveyance device (49) can be increased to reliably pull out the crop (G), and the clamping force on the clamping conveyance end side can be weakened so that the foliage (K ) Can be prevented from clogging, and work efficiency is improved.

According to the invention described in claim 4 , in addition to the invention described in claim 1, the rear tension rollers (45, 46) are arranged on the rear side in the transport direction and on the outer side of the machine body from the tension rollers (39L, 39R). Since the interval (S1) on the rear side of the nipping and conveying endless belt (35L, 35R) can be made larger than the interval (S) of the nipping and conveying start end portion, the foliage (K) is provided in the nipping and conveying device (49). Even if a large amount is sandwiched, the foliage (K) is prevented from being clogged at the end of the nipping and conveying section, and the work efficiency is improved.
Moreover, since the foliage (K) conveyed to the clamping conveyance device (49) is taken over by the leaf discharging device (81) at the clamping conveyance terminal portion and discharged to the left and right outside of the machine body, the foliage (K) is removed. It is prevented from being entangled with the airframe, so that work efficiency is improved and maintainability is improved.

With respect to the embodiment of the present invention, a drawing work machine for drawing ginger G will be described as an example.
As shown in FIG. 1 to FIG. 3, the drawing work machine includes a power unit A that supplies power to the entire machine, a control unit B that controls the running and turning of the machine, a traveling unit C that runs the machine, and a farm field. A pulling and conveying unit D that holds and pulls the stems and leaves K of the ginger G that is vegetated, and a leaf discharging unit E that discharges the extracted stems and leaves K to the field. Details of each part will be specifically described below.

First, the configuration of the power unit A will be described.
A fuel tank 2 is mounted on the engine 1 provided at the rear end of the machine body, and power is transmitted to the transmission case 4 through the output shaft 3 of the engine 1. Further, the left and right output shafts 4a, 4a of the transmission case 4 are extended toward the outside of the machine body, and the front drive shaft 4c is extended toward the front of the machine body. Then, the first bevel gear 5a is attached to the tip of the front drive shaft 4c, and the first bevel gear 5a and the second bevel gear 5b are engaged. Further, the second bevel gear 5b is provided to rotate integrally with the shaft 6. The left and right third bevel gears 5c and 5c are attached to the left and right ends of the shaft 6, and the left and right third bevel gears 5c and 5c are attached to the left and right shafts 7 and 7 so as to rotate integrally with the left and right shafts 7 and 7. Occlude 5d. The bevel case 5 that houses the left and right third bevel gears 5 c and 5 c and the left and right fourth bevel gears 5 d and 5 d is attached to the front of the mission case 4. Further, left and right drive sprockets 9 and 9 are attached to the left and right shafts 7 and 7, and the left and right drive sprockets 9 and 9 are arranged at the rear end of the main frame 8. The left and right first driven sprockets 10 and 10 attached to the left and right rotating shafts 63 and 63 are arranged at the approximate center of the main frame 8. Also, left and right second driven sprockets 11L and 11R are placed between the left and right drive sprockets 9 and 9 and the first driven sprockets 10 and 10 at the lower ends of the left and right drive rotation shafts 55 and 55 of the pulling and conveying section D described later. Install and place. Then, the left and right chains 12, 12 are wound around the left and right drive sprockets 9, 9, the first left and right driven sprockets 10, 10, and the left and right second drive sprockets 11L, 11R.

  As described above, since heavy members such as the engine 1 and the mission case 4 are provided on the rear side of the machine body, the center of gravity is on the rear side of the machine body. Even if an excessive load is applied to the front side of the machine body where the stems and leaves K are pulled out, the machine body is less likely to tilt forward, so that workability can be improved and work safety can be improved.

Next, the configuration of the control unit B will be described.
The left and right steering handles 13 and 13 are attached to the rear end portion of the main frame 8, and the left and right steering handles 13 and 13 and the transmission case 3 and the bevel case 5 of the power unit A are placed in a rearward upward tilt posture from the rear portion of the main frame 8. A covering cover 14 is provided. Then, a traveling clutch lever 15 that switches between running and stopping of the machine body and a work clutch lever 16 that turns on and off the driving of a holding and conveying device 49 described later are attached to the mission case 4. In addition, left and right side clutch levers 17 and 17 for turning on and off the transmission of power to the left and right chain cases 18 and 18 of the traveling part C, which will be described later, are attached to the lower portions of the left and right steering handles 13 and 13.

  As described above, the traveling clutch lever 15, the working clutch lever 16, and the left and right side clutch levers 17 and 17 are attached in the vicinity of the left and right steering handles 13 and 13, so that the operator can perform an operation according to the working state. Since it can be performed without moving, work efficiency is improved.

Next, the configuration of the traveling unit C will be described.
Left and right drive sprockets 19 and 19 mounted on the left and right chain cases 18 and 18 are attached to the left and right output shafts 4a and 4a, and the left and right drive sprockets 19 and 19 and the left and right chain cases 18 and 18 are mounted on the lower side. The left and right chains 21, 21 are wound endlessly between the left and right driven sprockets 20, 20. Then, left and right drive shafts 22 and 22 are attached to the left and right driven sprockets 20 and 20, and left and right drive wheels 23 and 23 are attached to the left and right drive shafts 22 and 22. In addition, left and right support rods 24 and 24 having holes at outer end portions are attached to the left and right front end portions of the main frame 8, and left and right adjustment rods having a plurality of adjustment holes in the hole portions of the left and right support rods 24 and 24. The left and right adjusting rods 25 and 25 are fixed by attaching left and right bolts and left and right pins to the adjusting holes of the left and right adjusting rods 25 and 25. Furthermore, left and right support shafts 28 and 28 are attached to the lower end portions of the left and right adjustment rods 25 and 25, and left and right auxiliary wheels 29 and 29 are rotatably attached to the left and right support shafts 28 and 28, thereby constituting the traveling portion C.

  As described above, since the left and right adjustment rods 25 and 25 are provided with a plurality of adjustment holes, the height of the left and right auxiliary wheels 29 and 29 can be freely changed. Easy to work and improve work efficiency.

Next, the configuration of the pulling and conveying unit D will be described.
A left extending plate 30L is attached to the upper part of the left front end of the main frame 8, and a left driven rotating shaft 31L is attached to the left extending plate 30L. The left driven pulley 32L is attached to the left driven rotary shaft 31L, the left driven pulley 34L is attached to the left driven rotary shaft 33L with the left second driven sprocket 11L attached to the lower end, and the left driven pulley 32L and the left driven pulley 32L A left clamping belt 35L is wound around the drive pulley 34L. Further, the base portion of the left tension arm 36L is attached to the main frame 8, a left external tension pulley 37L is rotatably attached to the tip portion of the left tension arm 36L, and the outside of the left clamping belt 35L is attached to the left external tension pulley 37L. Press. Further, a left tension frame 29L on which the left internal tension roller 38L is rotatably mounted is attached to the left side of the main frame 8, and the left internal tension roller 38L is pressed against the inside of the left clamping belt 35L.

  A left roller frame 40L having a plurality of left tension rollers 39L,... Rotatably mounted on the left drive pulley 34L is attached to the left drive rotation shaft 31L so as to be rotatable in the left-right direction, and the left sandwiched The belt 35L is attached so as to press the inner side of the clamping action portion. Further, the convex portion 41 at the rear end of the left roller frame 40L is fixed by a lock lever 42 attached to the main frame 8. Further, a base portion of an L-shaped reinforcing arm 43 is attached to the left side of the main frame 8, and an end portion of the reinforcing arm 43 is attached to an upper front portion of the left roller frame 40L, thereby constituting a fixing portion 44L that applies a certain clamping force. Is done.

  A right extending plate 30R is attached to the upper part of the right front end of the main frame 8, and a right driven rotating shaft 31R is attached to the right extending plate 30R. The right driven pulley 32R is attached to the right driven rotary shaft 31R, the right driven pulley 34R is attached to the right driven rotary shaft 33R with the right second driven sprocket 11R attached to the lower end, and the right driven pulley 32R and the right driven pulley 32R The right clamping belt 35R is wound around the drive pulley 34R. Further, the base of the right tension arm 36R is attached to the main frame 8, a right external tension pulley 37R is rotatably attached to the tip of the right tension arm 36R, and the outer side of the right clamping belt 35R is attached to the right external tension pulley 37R. Press. Further, a right tension frame 29R on which the right internal tension roller 38R is rotatably mounted is attached to the right side of the main frame 8, and the right internal tension roller 38R is pressed against the inside of the right clamping belt 35R.

  A right roller frame 40R having a plurality of elongated holes is provided on the right side of the machine body, and a plurality of right tension rollers 39R are rotatably mounted inside the machine body of the right roller frame 40R. Further, a rear tension roller 45 is rotatably attached to the rear side of the right tension roller 39R and outwardly of the machine body, and the rearmost tension roller 46 is rearwardly of the first tension roller 45 and outward of the machine body. Attach the to rotate freely. Then, the right tension roller 39R, the rear tension roller 45, and the rear tension roller 46 are pressed against the inner side of the right clamping belt 35R.

  The rear tension roller 45 and the rear tension roller 46 may be provided behind the left tension roller 39L ... and in the outer direction of the machine body, and behind both the left and right tension rollers 39L ... 39R ... And may be provided in the outer direction of the body.

  Further, the base portions of the front and rear tension springs 47F and 47R with adjustable clamping force are attached to the right side of the main frame 8, and the ends of the front and rear tension springs 47F and 47R are attached to the outer end of the right roller frame 40R. Further, the right roller frame 40R having a plurality of screw holes is fixed with a plurality of bolts 48 with the elongated holes and the screw holes being combined, and the inner sides of the clamping action portions of the left and right clamping belts 35L and 35R are pressed against each other. Thus, an adjustment unit 44R that adjusts the clamping force of the clamping conveyance device 49 is configured.

And the clamping conveyance apparatus 49 is comprised from this fixing | fixed part 44L and the adjustment part 44R.
Further, left and right universal joints 50 and 50 are attached to the upper portions of the left and right driven rotary shafts 31L and 31R, and left and right drive rotary shafts 51 and 51 are attached to the left and right universal joints 50 and 50, respectively. Further, left and right drive pulleys 52 and 52 are attached to the left and right drive rotation shafts 51 and 51, and left and right covers 53 and 53 are attached to the upper portions of the left and right drive pulleys 52 and 52. Further, left and right driven rotation shafts 54 and 54 are attached to the front end portions of the left and right covers 53 and 53, and left and right driven pulleys 55 and 55 are attached to the left and right driven rotation shafts 54 and 54. The left and right lug belts 56 and 56 are wound around the left and right driven pulleys 55 and 55 and the left and right driving pulleys 52 and 52, respectively. Further, left and right adjusting plates 57 and 57 having long holes are attached to the left and right extending plates 30L and 30R, and left and right adjusting stays 58 and 58 having screw holes are attached to the bottom surfaces of the left and right covers 53 and 53, respectively. Then, the elongated holes and the screw holes are combined, and the left and right adjusting plates 57 and 57 and the left and right adjusting stays 58 and 58 are connected by the bolt 59, whereby the left and right scraping devices 60 and 60 are configured.

  Further, between the main frame 8 and the drawing / conveying device 49, left and right first cutting blades 61 and 61 are attached to the upper ends of the left and right rotating shafts 62 and 62 to which the left and right first driven sprockets 10 and 10 are attached. Thus, the pulling and conveying unit D is configured.

If the left and right tension rollers 39L and 39R, the rear tension roller 45, and the rear tension roller 46 are arranged in a staggered manner as shown in FIG. 3, the clamping force is further improved.
As described above, the roller frame 40R on the right side of the machine body is provided so as to be adjustable in the left-right direction, so that the clamping force of the pulling and conveying device 49 can be adjusted according to conditions such as the vegetation of the stems and leaves K of the ginger G. As a result, appropriate farming can be performed.

  Further, by fixing the convex portion 41 of the left roller frame 40L, which is rotatable in the left-right direction, with the lock lever 42, the lock lever 42 is used when the stems and leaves K of the ginger G are clogged in the pulling and conveying device 49. Is pulled to the outside of the machine body, the fixing portion 44L is rotated in the direction of the machine body with the left drive rotation shaft 33L as a pivot, and the clamping force of the clamping and conveying device 49 is weakened. Maintainability is improved.

  Further, by providing the L-shaped reinforcing frame 43 between the left roller frame 40L and the main frame 8, even if a large amount of foliage K enters the holding and conveying device 49 and a load is applied, the reinforcing frame 43 is left Since the load applied to the roller frame 40L is received, it is possible to prevent the left roller frame 40L from bending and damaging the fixing portion 44L or the nipping / conveying device 49.

  Further, the rear tension roller 45 is attached to the rear side and the outer side of the plurality of right tension rollers 39R, and the rear tension roller 46 is attached to the rear side of the rear tension roller 45 and in the outer side of the machine body. By this, the interval S1 between the nipping and conveying end portions of the left and right nipping belts 35L and 35R can be made larger than the interval S between the nipping and conveying start end portions, and therefore nipping and conveying even when a large number of leaves and leaves K are nipped in the nipping and conveying device 49 The end portion is prevented from being clogged with foliage K, and the work efficiency is improved.

  By setting the clamping force of the rear tension spring 47R to be weaker than the clamping force of the front tension spring 47F, the foliage K can be strongly clamped at the clamping conveyance starting end of the clamping conveyance device 49, so that the ginger G While being reliably pulled away from the ground, the foliage K is easily released from the nipped state at the nipping and conveying terminal portion, so that the nipping and conveying device 49 is prevented from being clogged and the work efficiency is improved.

  The left and right scraping devices 60 and 60 are attached to the left and right driven rotary shafts 54 and 54 via the left and right universal joints 50 and 50, and the left and right adjustment plates 57 and 57 and the left and right adjustment stays 58 and 58 are long. By changing the alignment position of the hole and the hole part and moving it in the longitudinal direction of the machine, the tilting posture of the left and right scraping devices 60, 60 can be adjusted according to the conditions such as the vegetation status of the stems and leaves K of the ginger G, The foliage K is appropriately scraped into the left and right scraping devices 60 and 60 and is appropriately handed over to the pulling and transporting device 49, thereby improving work efficiency.

Next, the leaf discharging part E will be described.
A drive pulley 63 is attached to the upper part of the left drive rotation shaft 33L on the left side of the machine body, and a cover frame 64L is attached to the upper ends of the left and right drive rotation shafts 33L. Then, a driven pulley 65 and an idle pulley 66 are rotatably mounted on the outer side of the cover frame 64L, and a leaflet belt 67 is wound around the driven pulley 65, the idle pulley 66, and the drive pulley 63. Further, a tension arm 69 to which a tension pulley 68 is rotatably attached is attached to the cover frame 64L, and the tension pulley 68 is pressed against the inside of the non-clamping action portion of the leaflet belt 67. Further, the driven rotation shaft 70 is attached to the driven pulley 65, and the second cutting blade 71 is attached to the lower end portion of the driven rotation shaft 70.

  A drive pulley 72 is attached to the upper part of the right drive rotary shaft 33R on the right side of the machine body, and a cover frame 64R is attached to the upper end of the right drive rotary shaft 33R. Further, a driven pulley 73 and a first idle pulley 74 are rotatably mounted on the outer side of the cover frame 64R, and a second idle pulley 75 is rotatably mounted on the front side of the machine body. Then, the leaflet belt 76 is wound around the driven pulley 73, the first idle pulley 74, the second idle pulley 75, and the drive pulley 72. Further, a tension arm 78 on which a tension pulley 77 is rotatably attached is attached to the cover frame 64R, and the tension pulley 77 is pressed to the outside of the leaflet belt 76. Furthermore, by attaching the driven rotation shaft 79 to the driven pulley 73 and attaching the second cutting blade 80 to the lower end portion of the driven rotation shaft 79, the leaf discharging device 81 is configured, and the leaf discharging portion E is configured. .

  As described above, both the pulling and conveying device 49 and the leaf discharging device 81 are driven by receiving the driving force from the left and right second driven sprockets 12 and 12 via the left and right driving rotary shafts 51 and 51, and thus are components constituting the machine body. The number can be reduced and the cost can be reduced.

  Moreover, since the left and right second cutting blades 71 and 80 are attached to the conveying terminal portion of the leaf discharging device 81, the foliage K is cut into short pieces and then discharged to the field. It can be prevented from stopping and appropriate farming can be performed.

Hereinafter, another embodiment of the pulling work machine for the ginger G will be described.
As shown in FIG. 4, split roller frames 83a, 83b, 83c each having a plurality of tension rollers 82... Rotatably attached to the adjusting portion 44R are attached, and a tension spring 84a capable of adjusting the clamping force to the main frame 8. , 84b, 84c are attached, and ends of the tension springs 84a, 84b, 84c are attached to the divided roller frames 83a, 83b, 83c. And it is good also as a structure which presses several tension roller 82 ... inside the clamping action part of the right clamping belt 35R.

  As described above, by attaching tension springs 84a, 84b, and 84c that can adjust the clamping force to the divided roller frames 83a, 83b, and 83c, the clamping force of the clamping conveyance device 49 can be adjusted for each part. Therefore, it is possible to cope with changes in the working conditions such as the growth state of the ginger G and the state of the field, so that the work efficiency is improved.

  Further, the clamping force of the tension spring 84a at the clamping conveyance start end of the clamping conveyance device 49 is maximized, the clamping force of the tension spring 84b in the middle of the clamping conveyance is weaker than the clamping force of the tension spring 84a, and the clamping conveyance terminal end By weakening the clamping force of the tension spring 84c more than the clamping force of the tension spring 84b, the ginger G is pulled out from the field with a strong clamping force, and the ginger G is conveyed backward with a clamping force that does not cause the stems and leaves K to fall. Since the foliage K can be reliably discharged from the pinching and conveying device 49 at the conveyance end portion, the work efficiency can be improved and the ginger G can be reliably extracted, and the redrawing operation is omitted.

  In this embodiment, three divided roller frames and three tension springs are provided. However, as shown in FIG. 5, one divided roller frame 83x and one tension spring 84x may be provided for each tension roller 82. Well, in such a configuration, the clamping force of the clamping conveyance device 49 can be set finely for each part, so that the work efficiency is improved and the ginger G can be pulled out reliably, and the redrawing operation is omitted. Is done.

  Further, when a plurality of tension rollers 82, a split roller frame 83x, and a tension spring 84x are also attached to the fixed portion 44L, the clamping force of the clamping conveyance device 49 can be set more finely, so that it corresponds to the working conditions. Thus, the work efficiency is improved and the ginger G can be reliably pulled out, so that the second pulling work is omitted.

  As shown in FIG. 6, left divided roller frames 86La, 86Lb, 86Lc having a plurality of left tension rollers 85L,... Rotatably attached to the fixed portion 44L are attached, and the intermediate part of the left holding belt 35L is held from the inside. The end portion of the left tension spring 87L is attached to the divided roller frame 86Lb to which the left tension roller 85L to be pressed is attached, and the base portion of the left tension spring 87L is attached to the main frame 8. In addition, right split roller frames 86Ra, 86Rb, 86Rc having a plurality of right tension rollers 85R... Rotatably attached thereto are attached to the adjustment unit 44R, and the nipping and conveying starting end side and the nipping and conveying terminal end of the right nipping belt 35R are provided. The end portions of the right front and rear tension springs 87RF and 87RR are attached to the divided roller frames 86Ra and 86Rc to which the left tension rollers 85L that are respectively pressed from the inside are attached, and the base portions of the right front and rear tension springs 87RF and 87RR are attached to the main frame 8. It is good also as a structure.

  As described above, the clamping force at the clamping conveyance starting end and the clamping conveyance terminal end of the clamping conveyance device 49 is adjusted by the right front and rear tension springs 87RF and 87RR attached to the adjustment unit 44R, and the clamping force at the middle of the clamping conveyance is fixed. By adjusting with the left tension spring 87L attached to the portion 44L, the clamping force can be finely adjusted, so that the work efficiency is improved and the ginger G can be pulled out reliably, and the redrawing operation is omitted. Since the load applied to the fixing portion 44L and the adjusting portion 44R due to sandwiching the foliage K is dispersed, the fixing portion 44L and the adjusting portion 44R can be prevented from being bent and damaged, thereby improving the durability of the fuselage. To do.

  As shown in FIG. 7, a plurality of left and right tension rollers 89L, 89R,... Are rotatably attached to left and right front divided roller frames 88La and 88Ra and left and right rear divided frames 88Lb and 88Rb, respectively. The left and right front tension springs 90L and 90R and the left and right intermediate tension springs 91L that can adjust the clamping force to the left and right front divided roller frames 88La and 88Ra that supply the clamping force from the clamping conveyance starting end of the clamping conveyance device 49 to the middle of the clamping conveyance. 91R, and the left and right front tension springs 90L and 90R and the left and right intermediate tension springs 91L and 91R are attached to the main frame 8. The end portions of the left and right rear tension springs 92L and 92R that can adjust the clamping force to the left and right rear divided roller frames 88Lb and 88Rb that supply a clamping force from the middle of the clamping conveyance device 49 to the clamping conveyance terminal portion of the clamping conveyance device 49. And the bases of the left and right rear tension springs 92L and 92R may be attached to the main frame 8.

  As described above, the pinching force of the pinch transport device 49 can be freely adjusted at a plurality of locations, so that the work efficiency is improved and the ginger G can be pulled out reliably, and the redrawing operation is omitted and the foliage K is removed. Since the load applied to the fixing portion 44L and the adjusting portion 44R due to the pinching is distributed, it is possible to prevent the fixing portion 44L and the adjusting portion 44R from being damaged due to bending or the like, so that expected durability is improved.

  The clamping force of the left and right intermediate tension springs 91L and 91R is made weaker than that of the left and right front tension springs 90L and 90R, and the clamping force of the left and right rear tension springs 92L and 92R is clamped by the left and right intermediate tension springs 91L and 91R. If it is adjusted to be weaker, the ginger G is pulled out of the field with a strong clamping force, and the ginger G is conveyed rearward with a clamping force that does not drop the stems and leaves K, and the pinch K is securely clamped and conveyed at the clamping conveyance terminal portion. Therefore, the working efficiency is improved and the ginger G can be pulled out reliably, and the drawing operation is omitted.

  Further, when the holding force between the left and right front tension springs 90L and 90R and the left and right intermediate tension springs 91L and 91R is set to the same level, the holding and conveying device 49 can securely hold the foliage K even when the ginger G has few foliage K. Therefore, it is prevented that the ginger G is pulled out, and the redrawing operation is omitted.

  As shown in FIGS. 8 to 10, the second left driven pulley 93 </ b> L is attached to the left driven rotary shaft 31 </ b> L constituting the holding and conveying device 49 above the left driven pulley 32 </ b> L and left to the left drive rotary shaft 33 </ b> L. The second driving pulley 94L is pivotally attached to the upper side of the left driving pulley 34L, and the left second clamping belt 95L is wound between the left second driven pulley 93L and the left second driving pulley 94L. Further, a left second tension arm 96L having a left second external tension pulley 97L rotatably mounted thereon is attached to the upper portion of the left tension arm 36L, and the outside of the left second clamping belt 95L is pressed against the left second external tension pulley 97L. Let Further, the left second internal tension roller 98L is rotatably mounted on the rotation shaft of the left internal tension roller 38L, and the left second internal tension roller 98L is pressed against the inside of the left second clamping belt 95L.

  A left second roller frame 100L having a plurality of upper left tension rollers 99L,... Is rotatably mounted above the left second drive pulley 94L, and the body inner end of the left second roller frame 100L is attached to the left second roller frame 100L. The upper fixing portion 101L is configured by disposing it above the contact portions of the left and right clamping belts 35L and 35R.

The upper fixing portion 101L is configured to move in the outer direction of the aircraft in conjunction with the rotation of the fixing portion 44L in the outer direction of the aircraft.
Further, the right second driven pulley 93R is axially attached to the right driven rotary shaft 31R constituting the holding and conveying device 49 above the right driven pulley 32R, and the right second driven pulley 94R is driven right by the right drive rotary shaft 33R. The shaft is attached above the pulley 34R, and the right second clamping belt 95R is wound between the right second driven pulley 93R and the right second drive pulley 94R. Further, a right second tension arm 96R having a right second external tension pulley 97R rotatably mounted thereon is attached to the upper part of the right tension arm 36R, and the outside of the right second clamping belt 95R is pressed against the right second external tension pulley 97R. Let Further, the right second internal tension roller 98R is rotatably mounted on the rotation shaft of the right internal tension roller 38R, and the right second internal tension roller 98R is pressed against the inside of the right second clamping belt 95R.

  Then, a right second roller frame 100R having a plurality of elongated holes is attached above the right second drive pulley 94R, and a plurality of upper right tension rollers 99R... Are installed inside the right second roller frame 100R.・ Mount freely. Further, the rear upper tension roller 102 is rotatably attached to the rear side of the upper right tension roller 99R, and in the outer direction of the machine body, and the rear upper tension roller is disposed rearward of the upper rear tension roller 102 and in the outer direction of the machine body. The roller 103 is rotatably attached. Then, the upper right tension roller 99R, the rear upper tension roller 102, and the last upper tension roller 103 are pressed against the inner side of the clamping action portion of the right second clamping belt 95R. Further, the machine body inner end portion of the right second roller frame 100R is disposed at a position that does not overlap the right clamping belt 35R of the adjustment portion 44R.

  Further, the right second roller frame 100R having a plurality of screw holes is fixed with a plurality of bolts 104, with the long holes and the screw holes being combined, and the inner side of the holding action portion of the left and right second holding belts 95L, 95R. Are attached so as to press each other, and the upper adjustment unit 101L is configured.

The upper holding and conveying unit 105 is configured by the upper fixing unit 101L and the upper adjusting unit 101L.
As described above, the machine body inner end portion of the left second roller frame 100L of the upper fixing portion 101L is disposed above the contact portion of the left and right clamping belts 35L and 35R, and the right second roller frame 100R of the upper adjustment portion 101L is disposed. By arranging the inner end of the machine body at a position that does not overlap the right clamping belt 35R of the adjustment unit 44R, the phase T of the clamping conveyance unit between the clamping conveyance device 49 and the upper clamping conveyance device 105 is shifted in the horizontal direction of the aircraft in plan view. Therefore, since the clamping force of two places can be applied to the foliage K, the ginger G can be pulled out reliably, and the redrawing operation is omitted.

  Further, in the pulling and harvesting machine including the two-stage holding and conveying devices 49 and 105, as shown in FIG. 11, the left holding belt 106L and the left second holding belt 107L are shaped so as to become narrower toward the lower part in plan view. The right sandwiching belt 106R and the right second sandwiching belt 107R are made thicker toward the bottom in plan view, and the contact portion T1 of the left and right sandwiching belts 106L and 106R and the left and right second sandwiching belts 107L and 107R are formed. It is good also as a structure arrange | positioned so that the contact part T2 may become parallel.

  As described above, the contact portions T1 of the left and right sandwich belts 106L and 106R and the left and right second sandwich belts 107L and 107R are arranged so that the contact portions T2 are parallel to each other. In addition, since the clamping force applied to the stems and leaves K becomes strong, the ginger G can be reliably pulled out, and the redrawing operation is omitted.

  As shown in FIG. 12, the contact portion U1 of the left and right clamping belts 106L and 106R and the left and right second clamping belts 107L and 107R are arranged so that the contact portion U2 has a “<” shape in plan view. Since the pinching force can be increased in the same manner, the ginger G can be pulled out with certainty, and the redrawing operation can be omitted.

  As shown in FIG. 13, the left tension roller 39L... Of the fixed portion 44L and the upper left tension roller 99L of the upper fixed portion 101L are arranged at positions that do not overlap each other in plan view, and the right of the adjusting portion 44R. The tension roller 39R and the upper right tension roller 99R of the upper adjustment unit 101L are arranged at positions where they do not overlap each other in plan view, and the left tension roller 39L of the fixing unit 44L and the adjustment unit 44R The right tension rollers 39R,... Are arranged at the facing positions, and the upper left tension rollers 99L,... Of the upper fixing part 101L and the upper right tension rollers 99R,. It is good also as a structure to arrange.

  As described above, the tension rollers of the fixing portion 44L and the upper fixing portion 101L, the adjusting portion 44R and the upper adjusting portion 101L are arranged at positions that do not overlap each other in plan view, and the fixing portion 44L, the adjusting portion 44R, and the upper fixing portion. By placing the tension rollers of 101L and the upper adjustment unit 101L in facing positions, the foliage K is always clamped with equal force from the clamping conveyance starting end of the two-stage clamping conveyance devices 49, 105 to the middle of the clamping conveyance. Therefore, the ginger G can be reliably pulled out and conveyed, and the drawing operation again is omitted.

  As shown in FIG. 14, the left tension roller 39L... Of the fixing portion 44L and the right tension roller 39R of the adjustment portion 44R are arranged in a staggered manner in plan view, and the upper left tension of the upper fixing portion 101L. It is good also as a structure which arrange | positions roller 99L ... and upper right tension roller 99R ... of the upper side adjustment part 101L in a facing position by planar view.

  As described above, the tension rollers of the fixing portion 44L and the adjustment portion 44R are arranged in a staggered manner in a plan view, and the tension rollers of the upper fixing portion 101L and the upper adjustment portion 101L are arranged at facing positions in a plan view. Thus, the stems and leaves K can be always clamped at the sandwiching and transporting start end portions of the two-stage sandwiching and transporting devices 49 and 105, and the stems and leaves K can be sandwiched and transported backward in the middle of the sandwiching and transporting portion with a weaker clamping force than the sandwiching and transporting start end portion. Thus, the ginger G can be reliably pulled out and conveyed, and the redrawing operation can be omitted, and even when the foliage K is scraped in large quantities, the foliage K has two stages of nipping and conveying devices 49 and 105. Can prevent clogging.

  As shown in FIG. 15, a plurality of left protrusions 108L in a rearwardly inclined posture are attached to the surface of the left clamping belt 35L of the fixing portion 44L (a), and the surface of the right clamping belt 35R of the adjustment portion 44R is viewed from the side. In (b), a plurality of right protrusions 108R in a rearwardly inclined posture may be attached.

  As described above, by attaching the left protrusion 108L in the downwardly inclined posture in the side view to the surface of the left holding belt 35L and attaching the right protrusion 108R in the upwardly inclined posture in the side view to the surface of the right holding belt 35R. When the left and right clamping belts 35L and 35R are brought into contact with each other, the side cross section of the contact portion becomes X-shaped (c), so that the clamping force of the clamping conveyance device 49 is improved as a whole, and the ginger G is pulled out and conveyed reliably. And the redrawing operation can be omitted.

  The left and right protrusions 108L and 108R may be attached to the left and right second holding belts 107L and 107R of the upper holding and conveying device 105.

Top view of ginger puller Side view of ginger puller Principal plan view of ginger puller Plan view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller Side view of another embodiment of ginger puller Front view of main part of another embodiment of ginger puller Front view of main part of another embodiment of ginger puller Front view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller Plan view of main part of another embodiment of ginger puller (A) Side view of main part of left pinch belt 35L of ginger puller (b) Side view of main part of right pinch belt 35R of ginger puller (c) Side view of main part of contact surface of left and right pinch belts 35L, 35R

35L Left pinching belt (Left pinching endless belt)
35R Right clamping belt (Right clamping endless belt)
39L Left tension roller ( Tension roller )
39R Right tension roller ( Tension roller )
40L left roller frame (roller frame)
40R right roller frame (roller frame)
42 Lock lever 45 Rear tension roller (rear tension roller )
46 Last tension roller (rear tension roller )
47F Front tension spring
47R Rear tension spring 49 Nipping and conveying device 81 Leaf removal device G Ginger (Crop)
K foliage

Claims (4)

Only set clamping and conveying device (49) for conveying foliage (K) by sandwiching the to pull body rear crop (G) for vegetation in the field, the body takes over the foliage (K) from該挟lifting transfer apparatus (49) In the drawing work machine provided with the leaf discharging device (81) for discharging to the left and right outsides,
該挟lifting transfer apparatus (49), interposed pinching the foliage (K) Jimutantai (35L, 35R) and a rotatable pair of roller frame (40L, 40R), said roller frame (40L, 40R ) And a plurality of tension rollers (39L, 39R) which are rotatably provided, and the roller frame (40L, 40R) to press the tension roller (39L, 39R) to sandwich the endless belt (35L, 35R). wherein a tension spring into contact with the inner peripheral surface (47F, 47R), said roller frame (40L, 40R) by being configured from a lock lever (42) to switch to the a the non rotatable state and rotation state Pulling work machine. The tension springs (47F, 47R) are provided on the left and right sides of the roller frame (40L, 40R), and the lock lever (42) is provided on the left and right sides of the roller frame (40L, 40R). The drawing machine according to claim 1. The tension springs (47F, 47R) are provided in a pair of front and rear, and the tension of the rear tension spring (47R) is set to be weaker than the tension of the front tension spring (47F). Pulling machine. The drawing work machine according to claim 1, wherein a rear tension roller (45, 46) is provided behind the tension roller (39L, 39R) in the transport direction and outside the machine body.