JP5322626B2 - Harvesting machine - Google Patents

Description

  The present invention relates to a harvester that harvests crops in a field.

Conventionally, as shown in Patent Document 1, a harvesting machine in which a transport unit (clamping transport device) having a transport path for transporting a crop from the lower side toward the rear upper side is mounted on a traveling machine body having a traveling device in an inclined posture. It is already known. The harvesting machine according to Patent Document 1 is configured such that the transport unit is supported on the front part of the traveling machine body (vehicle body) having wheels on the front, rear, left and right of the machine body frame by supporting the support frame of the transport unit on a horizontal axis so that the transport unit is tilted at the front, rear, and rear height. The ground contact body provided at the front end is grounded and travels, and the crops whose roots are cut by a cutter provided in the ground contact body are sandwiched and conveyed rearward and upward by the conveyance unit.
Japanese Patent No. 2898629

The harvesting machine shown in Patent Document 1 moves a crop cultivated in a plurality of rows along a horizontal axis along a horizontal axis while running along a horizontal groove across left and right wheels. Since the crops in each row are sequentially harvested by the transporting unit capable of harvesting, the harvesting operation can be performed without riding the aircraft on the surface.
However, the harvesting machine moves with the wheel positioned in the trough, and is suitable for large-scale cultivation and harvesting because the wheel tends to sink when traveling on the saddle surface and small turning is difficult. However, it is unsuitable for fields that are cultivated with various ridge widths, row intervals, and row numbers.
Further, as described above, the harvesting machine having wheels (traveling devices) on the left and right sides of the traveling body requires a complicated and expensive steering mechanism for the left and right traveling devices, and the body frame increases in size and the longitudinal length of the body. Due to this limitation, the transport unit is installed in a steeply inclined posture. For this reason, crops that are nipped and transported in a steep posture tend to be bent and distorted, so that the quality is easily impaired, and crops such as spinach, komatsuna and small green onions (soft vegetables) are cultivated. There are problems such as difficulty in use in the cultivation house.

The harvesting machine of the present invention for solving the above-mentioned problems is as follows. First, the transport unit 9 having the transport path 40 for sandwiching and transporting the crop from the lower side toward the rear upper side is inclined to the traveling machine body 2 having the traveling device 5. In a harvesting machine 1 mounted in a posture, a crawler type traveling device in which a crawler 25 is wound around a small-diameter driven wheel 23 and a large-diameter driving wheel 6 in which the traveling device 5 is connected in the front-rear direction via a traveling frame 19. At the same time, the crawler type traveling device 5 is installed at the approximate center of the left-right width of the transport unit 9 and the driven wheel 23 side is brought close to the lower part of the transport unit 9 so as to enter the front-rear direction. Provided along the upper slope formed by the crawler 25 of the traveling device 5, the middle part of the transport unit 9 and the rear part of the travel frame 19 are rotatably supported on the drive shaft 6 a of the drive wheel 6, and the transport unit 9 and the traveling frame 19 Harvester comprises ligating supported by the turn restricting mechanism 17 that allows the rotation of the pivot drive shaft 6a while regulating the predetermined or more separation of the person.

Secondly, the battery 7 that feeds power to the motors 8 and 8 a that drive the traveling device 5 or the transport unit 9 is distributed and installed on the left and right of the traveling device 5.

  The harvester according to the present invention has the following effects. According to the first aspect of the present invention, since the traveling device stretches the crawler on the driven wheel and the driving wheel in a triangular shape with an acute front, the driven wheel side is brought as close as possible to the lower portion of the transport section. The conveying unit can be mounted with a gentle inclination along the upper slope of the crawler. As a result, the harvesting machine can smoothly make a small turn while stably supporting the machine body by the traveling device having the conveyance unit at the approximate center in the width direction and the crawler contact length in the front-rear direction being increased. In addition, it is possible to provide a harvesting machine that is compact, well-packed, and easy to handle with a traveling device close to the lower portion of the transport unit at a low price.

  According to the second aspect of the present invention, the travel device and the transport unit are driven in order to connect and support the rotation of the transport unit and the travel frame with the drive shaft as a fulcrum by restricting a predetermined distance or more by the rotation control mechanism. The front side can be smoothly rotated up and down around the shaft, and the weight of the transport unit can be applied to the traveling frame via the rotation restricting mechanism. Accordingly, stable traveling by the traveling device can be efficiently performed by restricting large separation between the transport unit and the traveling device and suppressing vibration of the airframe even with respect to the unevenness of the ground. Moreover, since the large separation between the transport unit and the traveling device is restricted when the vehicle exceeds the eaves or the like, it is possible to perform the eaves traveling over the eaves while suppressing the impact of the airframe.

  According to the third aspect of the present invention, since the batteries are installed by being distributed to the left and right of the traveling device, the heavy battery is installed in a well-balanced state using the spaces formed on both sides of the traveling device and close to the ground. In addition, the center of gravity of the airframe can be lowered and the running stability can be improved.

An embodiment of the present invention will be described with reference to the drawings. The harvesting machine 1 according to this embodiment is a harvesting machine for soft vegetables that is suitable for harvesting mainly non-headed leafy vegetables such as spinach, komatsuna and small leek (hereinafter simply referred to as crops). 2 is equipped with a harvesting device 3 that scrapes, conveys and collects crops from the field ground.
In this traveling machine body 2, the body frame 4 is configured as a crawler-type traveling device 5 to be described later, and the harvesting device 3 is supported by the body frame 4 in a front, back, and rear high-tilt posture, and is driven on both sides of the traveling device 5. Batteries 7 and 7 having substantially the same weight are installed at the installation position of the wheel 6.

The traveling device 5 has a driving wheel 6 as a large-diameter wheel and is disposed on the rear side so as to be driven by the rotational power of a motor 8 fed from a battery 7. The battery 7 also supplies power to the motor 8a for the harvesting device 3, and drives the transport band 10 and the cutter 11 of the transport unit 9 constituting the harvesting device 3 via a transport transmission mechanism 12 described later.
The body frame 4 is provided with a bifurcated handle 13 at the rear, extends rearward along the lower part of the transport unit 9, and controls the motors 8 and 8a such as forward / reverse rotation and rotational speed of the grip unit. Various operation switches 15, 15 a, 15 c... Are provided via a control box 16.
As a result, the harvesting machine 1 adjusts the motor 8 forward / reversely and rotationally to perform forward / backward movement and traveling speed adjustment operation of the machine body, and rotationally adjusts the motor 8a to perform conveyance speed adjustment operation. The harvesting operation can be performed by selecting an appropriate traveling speed and conveying speed.

  The configuration of each part will be described below. First, the traveling machine body (vehicle body) 2 and the traveling device 5 will be described in detail with reference to FIGS. This traveling machine body 2 pivotally supports a body frame 4 so as to be rotatable about a drive shaft 6a of the drive wheel 6 via a shaft support portion 4a. That is, the machine body frame 4 is attached to the upper part of the drive shaft 6a slightly above the drive shaft 3a by a mounting structure to be described later, and the front side of the device frame 3a via the rotation restriction support mechanism 17 is attached. By supporting on the traveling frame 19 of the traveling device 5, the harvesting device 3 is provided in an inclined posture of front low and high.

  The body frame 4 has the control box 16 and the motor 8 arranged vertically at the rear of the frame supported rearward from the drive shaft 6a, and the drive shaft from the motor shaft 20 via a transmission case 21 having a transmission mechanism. 6a is configured to transmit. And as shown in FIG. 3, the body frame 4 is formed in the right and left straddling the upper part of the traveling apparatus 5 so that the battery mounting base 22 may be brought close to the both side ends of the drive shaft 6a. Thus, the heavy left and right batteries 7 are stably installed at appropriate positions slightly on the front side on both sides of the drive shaft 6a, and are also used as weights for balancing the weight of the harvesting device 3 supported by the machine frame 4. The position of the center of gravity of the harvesting device 3 is determined in the vicinity of the rotation restriction support mechanism 17 and the traveling device 5 is weighted.

The harvesting machine 1 configured with the machine frame 4 as described above drives the vertical rotation of the harvesting device 3 according to the unevenness of the ground when the harvesting device 3 travels while grounding the front end of the harvesting device 3 to the ground. Perform smoothly around the shaft 6a. Similarly, the traveling device 5 also rotates up and down around the drive shaft 6a according to the unevenness of the ground surface, so that the single rotation of the harvesting device 3 and the traveling device 5 can be allowed without interfering with each other. it can. As a result, the harvester 1 can travel with reduced body vibration, and can harvest crops with high performance.
Further, the body frame 4 formed by forming the left and right battery mounting tables 22 in an inverted U shape from above and the travel device 5 by crotch has a feature that the frame rigidity can be increased by a simple bending structure.

As shown in FIGS. 1 and 2, the traveling device 5 has a rubber-made endless belt (crawler) 25 wound around the driving wheel 6 and the driven wheel 23. In this embodiment, the driving wheel 6 has a large diameter. The driven wheel 23 is about half the diameter of the drive wheel 6 and is pivotally supported at the tip of the traveling frame 19 pivotally supported on the drive shaft 6a via the pivotal support 19a. doing.
Thereby, the traveling device 5 can stretch the crawler 25 in a triangular shape with an acute angle in the side view, the small-diameter driven wheel 23 side at the central portion of the left-right width of the device frame 3a, and the conveyance unit 9 It is possible to approach the lower front as much as possible.

And while increasing the ground contact length of the crawler 25 in the front-rear direction, the overall length of the harvesting machine 1 is suppressed and the machine body is compactly gathered.
In addition, the crawler 25 that enters the lower portion of the apparatus frame 3a while increasing the contact length is not provided with a plurality of traveling devices 5 on the left and right sides of the machine body unlike the conventional one. The central portion can be stably supported by a wide ground surface.
And the right-and-left balance of the airframe is good, and the smooth driving | running | working which suppressed the rocking | fluctuation in the front-back direction is enabled.

In the harvesting machine 1 configured as described above, since the transport unit 9 of the harvesting device 3 can be arranged close to the upper inclined surface of the crawler 25, the transport unit 9 and the traveling machine body 2 can be arranged. The structure is compact and excellent in handleability as close as possible, and the aircraft is stably supported by the single-wheeled traveling device 5 in which one crawler 25 is stretched, so the steering operation structure is omitted. However, it is possible to provide the harvester 1 that can easily perform a small turn at low cost.
Moreover, since the inclination of the conveyance part 9 can be made moderate, it can convey orderly without disturbing the conveyance attitude | position of a crop, can arrange | position the accommodation attitude | position, and can make it easy to perform a harvesting operation. Further, there is a feature that the installation and use of the conveying band 10 that is wide in the vertical direction as described later can be suitably performed while preventing troubles such as belt detachment and large deflection.

As shown in FIGS. 1 to 3, the rotation restricting support mechanism 17 is attached to and supported by the middle of the traveling frame 19 in the horizontal direction, and is slidably fitted to both ends of the support rod 29. And has a connecting rod 31 standing upright. Both the left and right connecting rods 31 are inserted and installed between the support rod 29 and the support portion 30 with spring members 32 made of coil springs, with their tips inserted into the support portions 30 provided on both sides of the harvesting device 3. ing.
As a result, the rotation restriction support mechanism 17 arranged on the left and right can support the left and right sides of the device frame 3 a with the buffer structure via the support portion 30.

The harvesting machine 1 including the rotation restriction support mechanism 17 having the above-described configuration supports the weight of the harvesting device 3 by the traveling device 5 through the drive shaft 6a and the rotation restriction support mechanism 17, and supports the support rod 29 and The shock load applied to the support portion 30 can be buffered and supported by the spring member 32.
Therefore, the vertical rotation of the harvesting device 3 and the traveling device 5 with the drive shaft 6a as a fulcrum can be smoothly performed while suppressing overload of each component member and large vibrations and noises.
Further, the rotation restricting support mechanism 17 in the illustrated example has a plurality of pin holes 33 formed on the upper side of the connecting rod 31, and by inserting the stopper pin 35 into the selected pin hole 33, the support portion 30 and the stopper The pin 35 is brought into contact with the device frame 3a and the traveling device 5 so that a large separation with the drive shaft 6a as a fulcrum is regulated and the regulation amount can be adjusted.

  As described above, the harvesting machine 1 that constitutes the traveling machine body 2 has the traveling device 5 disposed below the width of the harvesting device 3 in a plan view, that is, substantially at the center of the left-right width of the conveyance unit 9 including the left and right conveyance paths 40. The battery 7 is disposed on both sides of the drive wheel 6 so as to be close to the crawler 25 and is not protruded larger than the apparatus width. As a result, the harvesting machine 1 makes the width on the traveling machine body 2 side, that is, the machine body width determined by the left and right batteries 7 smaller than the width of the bifurcated handle 13 disposed rearward and upward. As a result, the harvesting machine 1 has a good balance between left and right and is lightweight while maintaining front and rear running stability. Therefore, the dredging and soft ground can be prevented from sinking, and driving with excellent maneuverability can be easily performed. It can be carried out.

  Next, the harvesting apparatus 3 will be described with reference to FIGS. The harvesting device 3 includes a transport unit 9 that transports crops from the ground side toward the rear, and a storage unit 36 that stores crops at the end of the transport unit 9. The conveyance part 9 of the example of illustration is equipped with the cutter 11 which cuts or digs up the crop currently planted on the field ground as a pre-processing part in the conveyance start end side. In addition, the transport unit 9 is provided with an auxiliary transport body (original transport body) 37 made of a rotating brush body orthogonal to the transport direction as a post-processing section on the transport end side, and a storage section below the auxiliary transport body 37. 36 is provided on the handle 13.

  In the illustrated example of the accommodating portion 36, left and right ends of a receiving member 39 having a net-like or slat-like flexibility are removably attached to left and right accommodating support rods 38 projecting rearward from the handle 13. It has a configuration. As a result, the storage unit 36 can support the receiving member 39 on the storage support rod 38 with a curved surface, and the crops discharged and fed from the transport unit 9 and the auxiliary transport body 37 are collected in a fixed posture. Can be accommodated in a state.

  The transport unit 9 of the harvesting device 3 can have an interval equal to a standard width in which crops for two rows on the left and right sides are planted within the device width, and the crops on the left and right are spread over a predetermined length. A conveyance path 40 for nipping and conveying toward the rear is configured. This conveyance path 40 is formed by arranging the conveyance belts 10 having the cross-sectional structure shown in FIGS. 3 and 10 so as to oppose left and right, and the four conveyance belts 10 forming the left and right conveyance paths 40 are L-shaped in a sectional view. The outer transport frames 41 and 41 and the inner transport frames 42 and 42 forming a belt are belted by the same mechanism, so that the outer transport section 9a and the inner transport section 9b of the unit structure have a simple and inexpensive configuration. .

That is, the outer transport unit 9a and the inner transport unit 9b support the driven pulley 43 and the drive pulley 45 with respect to the upper part of the horizontal plate of each transport frame so that the front and rear ends of the transport pulley 43 and the drive pulley 45 can rotate in the vertical axis. A plurality of guide pulleys 46 having a belt support interval are supported so as to be able to rotate in the vertical axis so that the belt is tensioned.
At this time, the guide pulley 46 is erected so as to make rolling contact with the back surface of the transport band 10 on the transport path 40 side, and the guide pulleys 46 provided on the outer transport unit 9a and the inner transport unit 9b may be arranged so as not to face each other. desirable. The driven pulley 43, the drive pulley 45, and the guide pulley 46 are formed with a pulley groove 48 that guides a guide protrusion 47, which will be described later, of the transport band 10 into a predetermined position on the outer periphery thereof.

  The transport belt 10 is a belt body having a vertical standing rigidity (straightness) while having flexibility, and is a length that forms a transport path 40 as shown in FIG. 1, FIG. 3, FIG. The flat belt portion 51 of the embodiment has a width that sandwiches or supports substantially the entire main portion of the leaf from its root side, for example, for suitably transporting small green onions. Yes. The flat belt portion 51 is provided with an elastic pinching protrusion 52 at the lower portion on the surface side thereof so that the root side of the crop (leek) can be properly pinched while preventing slipping and crushing. This elastic clamping protrusion 52 is formed of sponge, cushioning rubber, air tube or the like, and a guide protrusion 47 is provided on the back side of the flat belt portion 51 so as to face the installation position of the elastic clamping protrusion 52. .

As described above, the conveyance belt 10 is provided with the flat belt portion 51 and the elastic pinching protrusions 52 that elastically pinch the clamping portion for the crop along the belt direction on the conveyance surface side of the flat belt portion 51. In addition, a guide protrusion 47 is provided on the back surface side of the flat belt portion 51 so as to be fitted into a concave groove-shaped pulley groove 48 formed on the outer periphery of the drive pulley 45 and the like along the installation portion of the elastic clamping protrusion 52. ing.
Therefore, the conveyance belt 10 in which the guide protrusion 47 is inserted into the pulley groove 48 of the drive pulley 45 is softly held by the elastic holding protrusions 52 without crushing the crop holding portion, so that the conveyance is ensured. It can be carried out. Further, there is a feature that the non-clamping portion of the crop is transported in an orderly manner in a state in which the posture to the side is regulated within the transport support interval of the transport path 40 formed by the flat belt portion 51 facing each other.

  As shown in FIGS. 8 to 10, the outer conveyance frame 41 is formed such that the vertical plate portion is longer in the vertical direction than the vertical plate portion of the inner conveyance frame 42. The outer transport section 9a and the inner transport section 9b that form a pair have a hook-shaped connection frame 53a and a plate-shaped connection frame 53 arranged on the lower side of each of the outer transport frame 41 and the inner transport frame 42. Are connected to form a unitary unit structure, and the left and right transport parts 9c and 9d of the unit structure forming the left and right transport paths 40 are formed to form the device frame 3a of the harvesting device 3 as a whole. ing.

  The left transport unit 9c and the right transport unit 9d are attached and supported so that they can be detachably mounted and slidable in the lateral direction on the front and rear of the upper body frame 4 by means of a horizontal connecting rod 54 by means of a horizontal connecting rod 54. At this time, the inner transport unit 9b is opposed to the rear by displace- ing the installation position from the outer transport unit 9a toward the rear. Thereby, the conveyance path 40 can be formed in a state where the driven pulley 43 and the drive pulley 45 of both are shifted from each other, and strong clamping between the conveyance start end side and the termination end side by the conveyance bands 10 and 10 is prevented. Damage or the like can be prevented.

Further, the end of the inner transport unit 9b located adjacent to the inner sides of the left and right transport paths 40 is positioned on the side of the storage unit 36 behind the end of the outer transport unit 9a, so that the crop is released from the nipping and transporting of both. After that, it is possible to reliably guide the discharge toward the storage unit 36 while restricting the tilting of the crop toward the inside of the machine body while the conveyance support by the conveyance band 10 of the inner conveyance unit 9b is continued.
Accordingly, two points in FIG. 1 are combined with the original feed action of the crop by the auxiliary transport body 37 in a state where the crops are not separated from each other at the end of the left and right transport paths 40 and 40 in an orderly manner. There is a feature that it can be accommodated while being stacked in an orderly manner in the receiving member 39 as in the crop trajectory indicated by the chain line.

  As shown in FIGS. 1, 3, and 10, the left transport unit 9 c and the right unit are configured such that a pair of outer transport unit 9 a and inner transport unit 9 b are connected and unitized to form a transport path 40. The transport unit 9d is configured such that the rear parts of both frames are connected by a rear connection part (movable connection part) 56 having a hinge structure on the vertical axis in a state where the inner transport frames 42 are arranged close to each other on the left and right. An interval adjusting mechanism 57 is provided on the front side of the left conveying portion 9c and the right conveying portion 9d to adjust the distance between the left and right sides. As shown in FIG. 4, the distance adjusting mechanism 57 is slidably fitted to an adjustment support rod 59 provided on the frame of the other right transport unit 9d, for example, on a pipe 58 provided on the frame of one left transport unit 9c. In addition, an adjustment bolt 61 is provided on the pipe 58.

Accordingly, the adjustment bolt 61 of the interval adjusting mechanism 57 is loosened when it is desired to increase the interval between the left and right transport paths 40, 40 from the minimum interval shown in FIG. When the interval fixing is released, the left conveying portion 9c and the right conveying portion 9d can be pivoted outward around the rear connecting portion 56, and the positioning fixing is performed by fixing the adjusting bolt 61 at a predetermined conveying path interval. It can be done easily.
In other words, the transport unit 9 having the left transport unit 9c and the right transport unit 9d having the transport path 40 adjustable to the left and right can be adjusted to expand the front side to the left and right while the rear side is supported at a fixed position. As a result, it is possible to reliably squeeze the crops in the left and right rows with different nipping and transport start positions, and to securely perform the nipping and transporting, and to gather the crops nipped and transported in the left and right transport paths 40 at a fixed position at the transport end. There is an advantage that post-processing work such as housing can be facilitated.

  Next, the transmission structure of the harvesting device 3 that enables the harvesting operation as described above will be described with reference to FIGS. 4 and 6 to 10. The transport transmission mechanism 12 is installed in the lower rear part of the transport unit 9, and the motor 8 is installed downward on a motor base 41 a that projects from the left outer transport frame 41, and is provided on the motor shaft. The drive sprocket 62 is input to the input sprockets 64 provided in the inner and outer transport parts 9b and 9a via the chain 63, and the transport belts 10 are rotated and transmitted.

The input sprocket 64 is provided on the lower side of the input shaft 65 that is pivotally supported by each of the transport frames of the left transport unit 9 c and the right transport unit 9 d and the connection frame 53, and is installed on the connection frame 53. The automatic chain tensioning mechanism 66 is rotated and transmitted by a tension sprocket 66 a of the automatic chain tensioning mechanism 66 and a chain 63 wound around the drive sprocket 62.
As shown in FIG. 9, each input shaft 65 is provided with an intermediate sprocket 67 at the top, and each intermediate sprocket 67 is a pulley sprocket included in each drive pulley 45 that is pivotally supported at the rear of each corresponding transport frame. Each conveyor belt 10 is driven to rotate by wrapping a chain 69 around the chain 68 for transmission. Therefore, even when the conveyance path interval is changed between the left conveyance unit 9c and the right conveyance unit 9d, the conveyance band 10 can be driven without adjusting the chain tension. The belt tension of the transport belt 10 can be easily adjusted by adjusting the driven pulley 43 in advance.

  In the automatic chain tensioning mechanism 66, a tension sprocket 66a is slidably supported in a long hole 71 formed in the connection frame 53, and is urged in the chain tension direction by tension springs 72 arranged on the left and right. As a result, each drive pulley 45 is rotationally driven via the respective pulley sprocket 68 to turn each transport belt 10 in the transport direction, and when the chain 63 is loosened, the automatic chain tensioning mechanism 66 The tension sprocket 66a automatically performs chain tensioning. Further, the tension sprocket 66a automatically corrects the loose displacement of the chain 63 when the left and right transport belts 10 are expanded through the distance adjusting mechanism 57 with the rear connecting portion 56 as a fulcrum.

Further, the transport transmission mechanism 12 transmits the left and right transport belts 10 by transmitting the left and right auxiliary transport bodies 37 from gears 73 provided below the pulley sprocket 68 of the drive pulley 45 of the left and right outer transport sections 9a. Conveyance adapted to the interval adjustment can be performed.
That is, the auxiliary transport body 37 is rotatably supported via the shaft support portion at the rear of each of the outer transport frame 41 and the inner transport frame 42 of the left transport portion 9c and the right transport portion 9d that make a pair of rotation shafts 74. In addition, a feed member 76 is provided in the middle of the rotation shaft 74 so as to face downward corresponding to the transport path 40, and a gear 77 to be engaged with the gear 73 is provided on the outer side.
With this configuration, the left and right auxiliary transport bodies 37 support the crop root from the end of the transport belt 10 when the rotation shaft 74 rotates through the gear 73 and the gear 77 as the drive pulley 45 rotates. Then, it is possible to take over and convey and guide the accommodation to the accommodation portion 36.

Further, the former feed member 76 in the illustrated example is a circular brush body in which a large number of wire rods are radially planted around the rotation shaft 74. As a result, the tip of the brush wire comes into contact with the lower end of the crop without causing any slip, and is separated from the subsequent crop so as to push up the lower end of the crop at the end of the transport belt 10, while preventing the natural fall, While drawing the arc trajectory, it is possible to feed and guide the storage unit 36 in an orderly and reliable manner. The original feed member 76 is not limited to a brush body, and may be a rotating body in which a sponge member is formed in a columnar shape, for example.
The former-side transport body 37 is preferably provided on the front side (upstream side in the transport direction) with a wiping member 76a that contacts the root side of the crop and tilts the leaf stem side rearward. In this case, the transport path 40 Since the rod-shaped former payment member 76a facing the surface imparts conveyance resistance to the base and tilts in advance, the crop in the accommodation posture can be accumulated in the accommodation portion 36 by the original feeding member 76 in an orderly manner.

Next, the structure of the front part of the harvesting apparatus 3 will be described. The outer transport frame 41 located on the left and right of the harvesting device 3 and the inner transport frame 42 in the center of the device are each provided with a divider 78 for scraping crops (leafy vegetables) at the tip, and the cutter 11 is removed from the ground surface. It is provided so as to be buried in the ground by a predetermined depth (for example, about 10 to 20 mm).
As a result, each divider 78 can guide the crops to the respective transport paths 40 as the aircraft progresses, and when the crops guided by the weeds start nipping and transporting by the transport belts 10 on both sides rotating inward. The cutter 11 cuts the root portion and can be smoothly transported by the transport band 10.

  The cutter 11 according to the embodiment is L-shaped in a front view, and the vertical piece portion is attached to each conveyance frame so that the blade portion can swing back and forth with a mounting shaft 79 as a fulcrum. A drive shaft 81 is connected to a forward / backward swing drive mechanism (not shown) configured on the transport transmission mechanism 12 side. As a result, when the drive rod 81 is moved back and forth by the back and forth swing drive mechanism, the cutter 11 can swing the blade portion back and forth in the ground with the mounting shaft 79 as a fulcrum to reliably cut the root or root of the crop. . The cutter 11 can also be adjusted to adjust the vertical height of the blade portion or to have a fixed operation.

  Next, a working example of harvesting small leek (hereinafter simply referred to as a leek) will be described with respect to the working mode, operation, and the like by the harvesting machine 1 configured as described above. First, the harvesting machine 1 adjusts the interval adjustment mechanism 57 to adjust the width of the leek row in the field to adjust the left conveyance unit 9c and the right conveyance unit 9d to the left and right, and to adjust the width of the leek row in the field to adjust the left and right The starting end portion of the conveyance path 40 is positioned and the work is started. Next, when the motor 8 is driven, the driving wheel 6 rotates in the direction of the arrow, and the vehicle can travel through the crawler 25 that supports the substantially central portion of the harvesting device 3. When the motor 8a is driven, the transport belts 10 installed on both sides of the transport path 40 can be rotated inward with respect to each other through the transport transmission mechanism 12 as described above.

As a result, the harvesting machine 1 travels through the onion cultivation field, cuts the root part of the leek scraped by the divider 78 with the cutter 11, and holds and conveys the cut green onion rearward and upward with the transport belt 10.
The leeks that have been nipped and transported from the end of the transport path 40 are received and transported downward by the auxiliary transport body 37 and sequentially accumulated and stored in the storage unit 36.
After that, the operator removes the receiving member 39 from the left and right receiving and supporting rods 38, puts the receiving member 39 on the ground with both sides piled up so as to wrap the accumulated leek, and receives and supports the new receiving member 39. The harvesting operation can be performed continuously and efficiently by setting it again on the basket 38 and restarting the operation.

The harvesting machine 1 that performs the harvesting operation as described above is in a state in which the traveling device 5 is stretched in a triangular shape with the crawler 25 having an acute angle front and the driven wheel 23 side is brought close to the lower portion of the transport unit 9. Since the transport unit 9 is mounted with a gentle slope along the upper slope of the crawler 25, the transport unit 9 can smoothly perform a small turn while stably supporting the airframe at the center in the width direction. .
Further, the rotation of the transport unit 5 and the travel frame 19 with the drive shaft 6a as a fulcrum is supported by connecting and supporting the travel device 5 and the transport unit 9 with the drive shaft 6a. The front side can be smoothly rotated up and down around the center, and the weight of the transport unit 9 can be hung on the traveling frame 19 via the rotation restricting mechanism 17, and the driving reaction generated when the crawler 25 is rotated in the forward direction. It is possible to effectively cancel the force. Accordingly, stable traveling is performed by the traveling device 5 that restricts the large separation between the transport unit 9 and the traveling device 5.

  That is, when the harvester 1 travels in the concave portion of the ground during the harvesting operation, the front portion of the traveling device 5 rotates downward with the drive shaft 6a as a fulcrum while the front portion of the harvesting device 3 is in contact with the ground. After passing along the concave portion, the rotating device returns to the original posture, and when traveling on the convex portion, the traveling device 5 is within the interchangeable operation range set by the rotational restriction support mechanism 17 with the drive shaft 6a as a fulcrum. Then, after turning upward, it passes through the convex portion and smoothly returns to the original posture. Similarly, when traveling on high ridges such as ridges and ridges, the harvesting device 3 and the traveling device 5 attempt to rotate in directions that are largely separated from each other, but when the rotation exceeds the interchangeable operation area. Since the rotation restriction support mechanism 17 restricts the separation, it is possible to prevent the airframe from becoming unstable and to make the running smooth.

Further, since the harvesting machine 1 is provided with the heavy battery 7 on the left and right sides of the traveling device 5 so as to be close to the ground, the harvesting machine 1 acts to lower the center of gravity of the machine body and improves the left-right balance. The harvesting device 3 can be supported stably by the traveling device 5 of the mold, and the traveling stability can be improved. Further, since the weight of the battery 7 is directly applied to the traveling device 5, it acts in the direction of canceling the driving reaction force generated when the crawler 25 is rotated in the forward direction.
As described above, the harvesting machine 1 including the single type traveling device 5 with improved body balance can simplify the operation and operation structure, and can easily travel even in narrow ridges and ridges while reducing the weight of the body. In addition, it is possible to easily make a small turn of the aircraft on the heel.
Therefore, it is possible to provide the harvesting machine 1 with the traveling device 5 close to the lower part of the transport unit 9 that is compact, well-packed, and easy to handle. This makes it possible to perform harvesting operations efficiently.

  Further, the harvesting machine 1 has a belt conveyance device provided in the conveyance unit 9, and the conveyance band 10 is configured by the flat belt part 51 having the shape described above, the elastic clamping protrusion 52 and the guide protrusion 31, thereby preventing the belt from coming off. However, since the clamping portion of the crop is elastically clamped between the opposing elastic clamping projections 52, the crop is securely held without being crushed or damaged, and the crop is non-clamped. Within the conveyance support interval of the conveyance path 40 formed by the flat belt portion 51 opposed to the sandwiching portion (leaf stem portion), the posture to the side is regulated to prevent falling, etc., and to carry out orderly and facilitate collection. Therefore, it can be stored in order in the storage portion 36 without causing damage to the leaf stem portion, and can be harvested with good quality. In addition, there is a feature that it is possible to perform harvesting work without damaging the quality even when the aircraft is turning small and speeding up the work.

  Further, since the harvesting machine 1 is provided with the auxiliary transport body 37 at the end of the transport path 40, the harvesting machine 1 smoothly carries out the transport of the crop root from the end of the transport belt 10 and supports the crop root so as to smoothly store the crop in the storage unit 36. Can be done. That is, the peripheral surface of the feed member 76 that rotates about the rotation shaft 74 is located at the end of the transport belt 10 for a crop that is released from the end of the transport path 40 and is about to fall naturally in a substantially upright posture. Since it makes rotational contact so as to push up the bottom end of the crop, it can be separated from the following crops, and then draw an arc trajectory with the rotation axis 74 as the center at the back toward the top of the crop while preventing natural fall. However, it is possible to guide the storage unit 36 and accumulate the crops in the storage unit 36 in an orderly manner. Accordingly, it is possible to prevent crop clogging and crop entanglement at the end of the conveyance path 40 and to prevent deterioration in quality at the time of crop collection. It is possible to facilitate the work.

It is a whole side view which shows the structure and working state of the soft vegetable harvester to which this invention is applied. It is a top view which fractures | ruptures and shows the structure of the traveling apparatus of FIG. It is the sectional view on the AA line of FIG. It is a top view of FIG. It is a top view which simplifies and shows the state which extended the right-and-left conveyance path of the soft vegetable harvesting machine of FIG. It is a top view which shows the structure of the conveyance transmission mechanism of FIG. It is a top view which shows the effect | action of the conveyance transmission mechanism of FIG. It is a side view which shows the structure of an outer side conveyance part. It is a side view which shows the structure of an inner side conveyance part and a conveyance transmission mechanism. It is the BB sectional view taken on the line of FIG. It is sectional drawing which shows the shape and effect | action of a conveyance belt.

1 Harvester (soft vegetable harvester)
DESCRIPTION OF SYMBOLS 2 Traveling machine body 3 Harvesting apparatus 5 Traveling apparatus 6 Drive wheel 6a Drive shaft 7 Battery 8, 8a Motor to drive 9 Conveying part 17 Rotation restriction mechanism (conformity support mechanism)
19 Traveling frame 23 Driven wheel 25 Crawler 40 Transport path

Claims (2)

In a harvesting machine (1) in which a transport unit (9) having a transport path (40) for sandwiching and transporting a crop from below to above is mounted in an inclined posture on a traveling machine body (2) having a traveling device (5). A crawler-type travel in which a crawler (25) is wound around a small-diameter driven wheel (23) and a large-diameter drive wheel (6) connected to the travel device (5) in the front-rear direction via a travel frame (19). The crawler-type travel device (5) is inserted in the front-rear direction with the driven wheel (23) side close to the lower portion of the transport unit (9), with the crawler type travel device (5) at the approximate center of the left and right width of the transport unit (9). As well as installing
The transport unit (9) is provided along the upper slope formed by the crawler (25) of the travel device (5), and the middle part of the transport unit (9) and the rear part of the travel frame (19) are connected to the drive wheels (6 ) Is rotatably supported on the drive shaft (6a), and the conveyance unit (9) and the traveling frame (19) are rotated around the drive shaft (6a) as a fulcrum while restricting the separation between them by a predetermined amount or more. A harvesting machine characterized in that it is connected and supported by a rotation restricting mechanism (17) that allows movement . The harvesting machine according to claim 1 , wherein the battery (7) for supplying electric power to the motor (8), (8a) for driving the traveling device (5) or the conveying section (9) is distributed to the left and right of the traveling device (5). .

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