JP7301368B2 - harvester - Google Patents

Description

TECHNICAL FIELD The present invention relates to a harvester capable of preventing foreign matter from getting caught.

BACKGROUND ART Conventionally, for example, a harvester described in Patent Document 1 below is known. This conventional harvester includes a transport section for transporting the harvested material and a support for supporting the transport section from below. For example, as shown in FIG. 11, a rotatable support body (roller body) 2 that supports the conveying section 1 from below includes four nuts 4 welded and fixed to the side plate 3, and the nuts 4 are screwed together. It is fixed to the side plate 3 with four bolts 5.

JP-A-5-344815

However, in the above-described conventional harvester, when a foreign object A such as a stone existing in the soil of a field is conveyed by the conveying unit 1 as shown in FIG. ) 6 and the nut (welding nut) 4, the foreign matter A may get caught.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a harvester that can prevent foreign matter from getting caught.

The harvesting machine according to claim 1 comprises a conveying section for conveying the harvested material, and a fixing member having a contact section for preventing jamming of the foreign matter conveyed by the conveying section.

A harvesting machine according to claim 2, comprising a conveying section for conveying harvested crops, a support for supporting the conveying section, and a fixing member for fixing the support to a fixed section, wherein the fixing member has a contact portion for preventing jamming with which the foreign matter conveyed by the conveying portion comes into contact.

The harvesting machine according to claim 3 is the harvesting machine according to claim 1 or 2, wherein the contact portion of the fixed member is positioned along an inclined direction with respect to the conveying direction of the conveying portion.

The harvesting machine according to claim 4 is the harvesting machine according to any one of claims 1 to 3, wherein the contact portion of the fixed member is a longitudinal member positioned along an inclined direction with respect to the conveying direction of the conveying portion. is the contact surface of

A harvesting machine according to claim 5 is the harvesting machine according to any one of claims 1 to 4, wherein the fixing member has a plurality of screw holes.

The harvester according to claim 6 is the harvester according to any one of claims 1 to 5, wherein the fixing member is fixed by welding to the fixed part.

ADVANTAGE OF THE INVENTION According to this invention, the biting of a foreign material can be prevented.

It is a side view of a harvester concerning one embodiment of the present invention. It is a top view of a harvester same as the above. It is a perspective view of a harvester same as the above. It is a partial perspective view of a harvester same as the above. It is a partial side view of a harvester same as the above. It is a partial plan view of the same harvester. It is a fragmentary sectional view of a harvester same as the above. It is a figure which shows the fixing member (stone avoidance board) with which a harvester same as the above is provided. It is a figure which shows the vibration means with which a harvester same as the above is provided. It is a figure which shows the modification of a fixing means. It is explanatory drawing of the conventional harvester.

An embodiment of the present invention will be described with reference to FIGS. 1 to 9. FIG.

1 to 3, reference numeral 11 denotes a harvester, which is an agricultural working machine, and this harvester 11 is a small self-propelled harvesting device for harvesting crops W in a field. The crop W to be harvested is, for example, roughly spherical potatoes grown in the soil of a field. The harvested product W may be, for example, sweet potato, onion, carrot, etc., in addition to potatoes.

The harvester 11 is driven by an engine 13 which is a drive source installed in a machine frame 12, a crawler 14 which is a traveling means operated based on the power from the engine 13, and the power from the engine 13 as well. It is provided with a conveyor 15 as a conveying means and a vibrating means 17 for vibrating the conveying portion 16 of the conveyor 15 in the vertical direction.

The front portion 15a of the conveyor 15 is vertically rotatable with respect to the rear portion 15b around a pivot point 22 based on the expansion and contraction of a cylinder 21, which is an extension/contraction driving means. A digging edge 23 and left and right gauge wheels 24 are provided on the front portion 15a. The height position of gauge wheel 24 can be adjusted by adjusting handle 25 .

In addition, the harvester 11 includes left and right seats 26 on which workers sit, steps 27 provided near the respective seats 26, operation means 28 that can be operated by the worker sitting on the left seat 26, and a container. It has a front container table 29 and a rear container table 30 on which (containers in which harvested products W are stored) are placed.

Conveyor 15 is a conveying device (harvested product) that conveys harvested material W dug up from the soil of the field by digging blade 23, which is a digging body located at the front end, obliquely upward and rearward by conveying unit 16. transport means). In other words, the conveyor 15 moves the harvested material W diagonally upward and backward (in the conveying direction) while dropping the soil of the field carried onto the conveyor 15 together with the harvested material W from the soil drop opening (gap between the adjacent conveying bars 43) 20. ), and has an endless conveying portion 16 that can rotate. It should be noted that foreign matter A such as stones existing in the soil of the field may be mixed with the harvested material W and conveyed by the conveying unit 16 .

The conveying unit 16 is wound around a driven roller 31 on the front side and a driving roller 32 on the rear side, and is rotated in a predetermined direction by driving rotation of the driving roller 32 . The conveying section 16 has an outward road surface portion 33 on the upper side that conveys the harvested material W while dropping soil from a plurality of soil dropping openings 20, and the outward road surface portion (the belt portion of the outward road surface portion) 33 is a roller body ( It is supported from below by a support 35 and a fixed guide 36 .

In addition, the conveying unit 16 includes an endless belt (belt portion) 41, which is a pair of left and right belt-shaped endless members that rotate in a predetermined direction, and is stretched between the two endless belts 41, and rotates together with the endless belt 41. It has a conveying bar (conveyor bar) 43, which is a plurality of horizontally elongated conveying members for conveying the harvested material W in the conveying direction. Between the conveying bars 43 adjacent to each other in the conveying direction, there are soil dropping openings 20 for dropping soil toward the field.

The plurality of conveying bars 43 are composed of, for example, three types of conveying bars 43a, 43b, and 43c having different shapes, etc., and different heights of the lowest positions (bottom positions where the vibrating rollers contact). One of them, 43 (43a), is a rising conveyor bar. That is, the transport bar 43 (43a) has an upwardly projecting anti-rolling portion (rising portion) 44 which is positioned above the other transport bars 43 (43b, 43c) and prevents the harvested material W from rolling. are doing.

On the other hand, the left and right roller bodies 35 are intermediate driven roller bodies that support the intermediate portion of the endless belt 41 of the conveying section 16 from below while being driven to rotate in a predetermined direction. As shown in FIGS. 4 to 7, the roller body 35 is fixed to a side plate (conveyor side plate) 46, which is a portion to be fixed, by a fixing means 50 including a fixing member 51 in the form of an elongated plate. In addition, the side plates 46 are erected in close proximity to the left and right sides of the conveying section 16 .

The fixing means 50 for fixing the roller body 35 to the side plate 46 includes one fixing member (stone guard plate) 51 in which a plurality of, for example, two screw holes 55 are formed, two nuts (welding nuts) 52, It has four bolts (countersunk bolts) 53 . The fixing member 51 and the nut 52 are welded and fixed to a predetermined portion of the inner surface of the side plate 46, and the fixing member 51 is fixed to the upper side (upper vicinity portion) of the circular mounting hole 56 formed in the side plate 46. The nut 52 is fixed to the lower side (lower vicinity portion) of the mounting hole 56 . Four bolt holes 57 are formed in each of the left and right side plates 46 so as to be positioned around the mounting holes 56 .

The roller body 35 is rotatably attached to a roller mounting member 61 having a mounting plate portion 66 fixed to the side plate 46 by a fixing means 50, and to a shaft portion 67 of the roller mounting member 61 via a bearing 64. and a cover member 63 that covers the tip side of the shaft portion 67 of the roller mounting member 61 . A mounting plate portion 66 of the roller mounting member 61 is formed, for example, in a substantially square shape, and frustoconical bolt holes 69 are formed near four corners of the mounting plate portion 66 .

The upper two bolts 53 are inserted into the bolt hole 69 of the mounting plate portion 66 and the bolt hole 57 of the side plate 46 and screwed into the screw holes (screw holes) 55 of the fixing member 51. , the lower two bolts 53 are inserted into the bolt hole 69 of the mounting plate portion 66 and the bolt hole 57 of the side plate 46 and screwed into the threaded hole (screw hole) 52a of the lower nut 52. ing. Thus, the fixing means 50 fixes the roller body 35 to the side plate 46 .

Here, the elongated plate-like fixing member (stone avoiding plate) 51 also has a function of preventing the foreign matter A from being caught. It has a contact surface 71 on the front side of the upper surface, which is a contact portion for preventing foreign matter A from getting caught, and guides the foreign object A upward (diagonally upward and rearward) to escape. It has it on the rear side of the top surface. The upwardly convex arcuate surface 72 is positioned on a circle having a radius R centered on the center point (the center point of the mounting hole 56) P of the roller body 35 in a side view (see FIG. 5). reference).

The contact surface 71 of the fixing member 51 is a narrow, elongated flat inclined surface positioned along the inclined direction inclined upward at a predetermined angle α with respect to the conveying direction of the conveying unit 16 . The predetermined angle α, which is the inclination angle of the contact surface 71 with respect to the conveying direction of the conveying unit 16, is an acute angle smaller than 90 degrees, for example, 15 degrees to 45 degrees, preferably 30 degrees. Also, the length L along the direction of inclination of the contact surface 71 is, for example, 5 cm to 12 cm, preferably 6 cm (see FIG. 8). The plate thickness dimension of the fixing member 51 is the same (including substantially the same) as the height dimension of the nut 52, for example, 6 mm.

As shown in FIG. 5, the contact surface 71 overlaps the endless belt 41 of the conveying unit 16 in a side view, and the front end of the contact surface 71 is positioned below the upper surface 41a of the endless belt 41. The trailing end is located near the locus line S of the upper end of the conveying bar 43 (43a) (it may be at the same position as or above the locus line S).

As described above, the inclination angle (predetermined angle α) of the contact surface 71 inclined with respect to the conveying direction is an acute angle. is an obtuse angle larger than 90 degrees (for example, 150 degrees).

Further, the fixing member 51 is formed with two front and rear screw holes 55. The front screw hole 55 is formed near the longitudinal center of the fixing member 51, and the rear screw hole 55 is formed in the fixing member 51. It is formed at the rear end.

On the other hand, the vibrating means 17 is a conveyor vibrating device for vertically vibrating the conveying section 16 of the conveyor 15 in order to shake off the soil. The vibrating means 17 vibrates in at least three states, that is, a first vibrating state (vibrating state) in which the conveying unit 16 is vibrated with a first vibration strength (vibration strength having an amplitude of "20 mm" and an amplitude of "9 mm"). "strong" state), and a second vibration on state (vibration "weak" state) in which the conveying unit 16 is vibrated at a second vibration strength (vibration strength having an amplitude of "8.2 mm") that is weaker than the first vibration strength. ) and a vibration-off state (vibration “off” state) in which no vibration is imparted to the conveying unit 16.

Here, as shown in FIG. 9, the vibrating means 17 causes the conveying portion 16 to convey based on the abutment of the conveying portion 16 with the conveying bar 43 during the vibration-on state (the first vibration-on state and the second vibration-on state). A vibrating roller 101, which is a laterally movable vibration imparting body that imparts vibration to the section 16, and an endless belt of the conveying section 16 so that the vibrating roller 101 does not come into contact with the conveying bar 43 of the conveying section 16 when the vibration is turned off. 41 and support guides 102, which are vertically movable plate-like left and right support members, for slidably supporting 41. As shown in FIG.

Further, the vibrating means 17 has an operation lever 103 which is a rotatable operating body for switching the state of the vibrating means 17 to one of the three states selected, and includes a vibrating roller 101 and a support. The guide 102 is simultaneously set at a predetermined position corresponding to the state of the vibrating means 17 by vertical movement based on the rotational operation of the operating lever 103 . That is, by fixing the operation lever 103 to the first vibration on position with the lock pin 104, the vibrating means 17 is switched to the first vibration on state, and the operation lever 103 is fixed at the second vibration on position with the lock pin 104. , the vibration means 17 is switched to the second vibration on state, and by fixing the operating lever 103 to the vibration off position with the lock pin 104, the vibration means 17 is switched to the vibration off state.

The operating lever 103 has a plate-shaped lever body portion 106 and a U-shaped frame portion 107 fixed to the lever body portion 106 . The L-shaped lock pin 104 is inserted into the pin hole 108 of the lever body portion 106 and the pin hole 109 of the U-shaped frame portion 107 . Further, the portion of the lock pin 104 positioned within the U-shaped frame portion 107 has holes in the switching plate 110 (first vibration on position hole 111, second vibration on position hole 112, vibration off position hole). 113), a spring 115 as a biasing member that biases the lock pin 104 is mounted.

The switching plate 110 is fixed to the left side plate 46 of the front portion 15a of the conveyor 15. As shown in FIG. Stoppers 117 and 118 project from the front and rear sides of the switching plate 110 to restrict the rotation of the operating lever 103 by coming into contact with the operating lever 103 . Therefore, the rotation range of the operating lever 103 is limited by the front and rear stoppers 117 and 118. As shown in FIG.

Further, the vibrating means 17 has a rotating shaft 121 rotatably installed between the left and right side plates 46 facing each other with a distance therebetween. The proximal end of 106 is attached. Also, the left and right side plates (front conveyor frame) 46 are connected by connecting pipes 120 .

A base end of a mounting plate 122 is fixed to two positions of the rotary shaft 121, and a vibration roller 101, which is a cylindrical rotating body, is rotatably mounted to the front end of the mounting plate 122 via a bearing 100. there is A support plate 123 that supports a support guide (belt support guide plate) 102, which is a rotating body, is fixed to a portion of the rotation shaft 121 positioned outside the mounting plate 122. As shown in FIG. Therefore, based on the rotation of the rotation shaft 121 by the operation of the operation lever 103, the vibrating roller 101 and the support guide 102 rotate vertically in conjunction with each other.

The support guide 102 is vertically rotatable about a support shaft (rotational fulcrum) 124 fixed to the side plate 46 of the front portion 15a of the conveyor 15 so that the rear end of the support guide 102 moves up and down. In other words, the support guide 102 is vertically rotatable about the pivot point on the front end side.

The support guide 102 includes a guide main body portion 126 in the shape of an elongated v-shape bent at one point, a mounting portion 127 provided at the front end of the guide main body portion 126, and a lower surface of the guide main body portion 126. It has a protruding plate portion 128 that protrudes. Attachment portion 127 is rotatably attached to support shaft portion 124 , and the lower surface of guide body portion 126 is supported by support portion 130 that is the curved upper end portion of support plate 123 .

The vibrating roller 101 and the support guide 102 are arranged between the left and right side plates 46 and between the outward and return surfaces of the conveying section 16 of the conveyor 15. It is arranged at a position outside the left side plate 46 so that it can be easily operated from the side.

Next, the operation and the like of the harvester 11 described above will be described.

When the harvester 11 is moved forward (in the advancing direction shown in FIG. 1) by the operation of the crawlers 14 in the field, the harvested material W in the soil of the field is dug up from the soil of the field by the digging blades 23. The picked harvest W is conveyed in the conveying direction by the conveying portion 16 of the conveyor 15, and is manually stored in the container by an operator sitting on the seat 26 during the conveying.

At the time of this work, for example, as shown in Figs. When the foreign matter A is moved, the foreign matter A contacts (abuts) the contact surface 71 of the fixing member 51 and slides obliquely upward and backward along the contact surface 71 .

As a result, the foreign matter A is not caught between the anti-rolling portion 44 of the conveying bar 43 (43a) and the fixed member 51, and the foreign matter A is caught between the conveying bar 43 (43a) and the fixed member 51. no intrusion occurs.

According to such a harvester 11, the conveying section 16 for conveying the harvested material W, the roller body 35 for supporting the conveying section 16 from below, and the roller body 35 for fixing to the side plate 46 are used. A fixing member 51 is provided, and since this fixing member 51 has a contact surface (guide surface) 71 with a front-to-low and rear-to-high slope to prevent foreign matter A from getting caught, the foreign matter A is prevented from getting caught. can be prevented. Therefore, it is possible to prevent the conveying bar 43, the endless belt 41, and the like from being damaged by the foreign matter A getting caught, and the harvested material W will not be damaged by the getting caught.

Further, since the contact surface 71 of the fixing member 51 is a longitudinal inclined surface positioned along the inclined direction inclined with respect to the conveying direction of the conveying portion 16, the contact surface 71 guides the foreign matter A upward. Therefore, it is possible to appropriately prevent the foreign matter A from being caught.

Furthermore, the fixing member 51 of the fixing means 50 is formed with a plurality of screw holes 55 into which the bolts 53 can be screwed. mitigated.

In addition, since the elongated plate-shaped fixing member 51 is welded and fixed to a portion of the side plate 46 near the upper portion of the mounting hole 56 so as to be positioned along the outer periphery of the mounting hole 56, the portion of the side plate 46 is fixed. It is possible to improve the strength of

The contact surface 71 of the fixing member 51 is not limited to a flat surface along the direction of inclination, and may be, for example, an upwardly convex or downwardly convex arc-shaped curved surface.

The fixing member 51 is not limited to having two screw holes 55, but may have, for example, one or three or more screw holes. A configuration in which a member (a member having a contact portion for preventing jamming) is welded and fixed to a predetermined portion of the inner surface of the side plate (for example, a position in front of the upper welding nut) may be used.

Furthermore, the number of nuts 52 on the lower side is not limited to two, but may be one. may be fixed to The fixing means 50 shown in FIG. 10 includes an upper fixing member (a long plate-shaped nut having a contact surface 71) 51 formed with a screw hole 55 and a lower fixing member (a contact surface 71) formed with a screw hole 55. It has a long plate-like nut 60 without 71 and four bolts 53 that can be screwed into screw holes 55 of these fixing members 51 and 60 .

11 harvester
16 Conveyor
35 Roller body as support
46 Side plate to be fixed
51 Fixing member
55 Threaded hole
71 Contact surface that is a contact part W Harvest A Foreign matter

Claims (5)

a conveying unit that conveys harvested products;
a support that supports the conveying unit;
a fixing member used for fixing the support to the fixed part;
The harvesting machine, wherein the fixing member has a contact portion for preventing foreign matter from being bitten by the foreign matter conveyed by the conveying portion. 2. The harvester according to claim 1 , wherein the contact portion of the fixed member is positioned along an inclined direction with respect to the conveying direction of the conveying portion. The harvester according to claim 1 or 2 , wherein the contact portion of the fixed member is a longitudinal contact surface positioned along an inclined direction with respect to the conveying direction of the conveying portion. The harvester according to any one of claims 1 to 3 , wherein the fixing member has a plurality of screw holes. The harvester according to any one of claims 1 to 4 , wherein the fixing member is welded and fixed to the fixed portion.

Images