JP2004210412A - Conveyance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyance device capable of nipping and conveying farm products properly. <P>SOLUTION: This conveyance device is provided with a pair of left and right conveyance belts 21 nipping and conveying farm products and outer guide rollers 31 positioned at outer positions of both conveyance belts 21. The conveyance belt 21 has a belt main body part 33 and a spongelike elastic deformation part 35 protruding from an outer face of the belt main body part 33. The outer guide roller 31 has a roller main body part 43 and an abutting part 44 which protrudes from an outer face of the roller main body part 43, is abutted on an outer face of a part free of the elastic deformation part 35 of the belt main body part 33, and does not deform the elastic deformation part 35 by the roller main body part 43. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transport apparatus including a pair of transport belts that sandwich and transport agricultural products.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a conveyance device is known that includes a pair of left and right conveyance belts that sandwich and convey a crop, and a plurality of outer guide rollers that are respectively disposed at outer positions of both the pair of left and right conveyance belts. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
JP 2000-41453 (second page, FIG. 2)
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional conveying device, for example, a sponge-like elastic deforming portion is projected on the outer surface of the belt main body portion of the conveying belt so as not to damage the crops, and the elastic deforming portion and an equal-diameter cylindrical outer guide roller are provided. When the outer surface is in contact with the outer surface, the elastic deformation portion is maintained by the outer guide roller because the elastic deformation portion is kept in contact with the outer guide roller of the elastic deformation portion of the conveyor belt when not conveyed. There is a risk that crops may not be properly sandwiched and conveyed.
[0005]
This invention is made in view of such a point, and it aims at providing the conveying apparatus which can be pinched and conveyed appropriately, without damaging agricultural products.
[0006]
[Means for Solving the Problems]
The conveyance device according to claim 1 is provided with a pair of conveyance belts that sandwich and convey a crop, and an outer guide roller disposed at an outer position of at least one of the pair of conveyance belts, and the conveyance belt Has a belt main body portion and an elastic deformation portion protruding from the outer surface of the belt main body portion and contacting the crop, and the outer guide roller protrudes from the roller main body portion and the outer surface of the roller main body portion. And an abutting portion that abuts against an outer surface of a portion of the belt main body portion where the elastic deformation portion is not provided and does not deform the elastic deformation portion with the roller main body portion.
[0007]
Then, an outer surface of a portion of the conveyor belt that is provided with an elastic deformation portion that comes into contact with the agricultural product on the outer surface of the belt main body, and the outer surface of the roller main body of the outer guide roller is not provided with the elastic deformation portion of the belt main body. Since the abutting portion that abuts against the elastic deformation portion and does not deform the elastic deformation portion with the roller main body portion is provided, the elastic deformation portion is prevented from being molded by the outer guide roller.
[0008]
The conveying device according to claim 2 is the conveying device according to claim 1, wherein the protruding dimension of the abutting portion from the outer surface of the roller main body is greater than the protruding size of the elastically deforming portion from the outer surface of the belt main body. is there.
[0009]
Further, since the protruding dimension of the abutment portion from the outer surface of the roller main body portion is equal to or larger than the protruding dimension of the elastic deformation portion from the outer surface of the belt main body portion, the elastic deformation portion is reliably prevented from being molded by the outer guide roller. Is done.
[0010]
According to a third aspect of the present invention, in the conveyance device according to the first or second aspect, the contact portion of the outer guide roller is a movement that regulates movement of the conveyance belt in the belt width direction by contact with the elastic deformation portion. A regulatory surface is formed.
[0011]
The movement of the conveying belt in the belt width direction can be appropriately restricted by the movement restricting surface of the contact portion of the outer guide roller.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of an embodiment of the present invention will be described below with reference to the drawings.
[0013]
In FIG. 1, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to, for example, a rear part of a tractor 2 that is a traveling vehicle so as to be movable up and down, and moves forward (traveling direction) by the traveling of the tractor 2. A long-crop harvesting machine that harvests the elongated crop A cultivated on the culm H1.
[0014]
In addition, the crop A which is a harvest object is long stem vegetables such as long persimmons, and the main body (stems and leaves) A1 whose bottom half is located in the soil of persimmon H1 in the state before harvesting. And a root A2 extends from the lower end of the main body A1 (see FIG. 7).
[0015]
The agricultural machine 1 includes a fixed machine frame 5 connected to the three-point link 3 at the rear part of the tractor 2 and a movable machine frame 7 provided to the fixed machine frame 5 via a parallel link 6 so as to be offset. The movable machine frame 7 is provided with working means 8, a work table 9, a step 10, and the like.
[0016]
The working means 8 includes, for example, a soil removal device 11 for removing soil on both sides of the crop A of the basket H1 in the field H, and a crop A cultivated on the basket H1 of the field H from both left and right sides. After transporting to the vertical position (the nipping and transporting end position), the transporting device 12 that transports the crop A horizontally to the left side that is one side while supporting the crop A from the front and the bottom only in the forward tilted posture, and the crop A The excavation conveyor 14 that transports the crop A together with the upper transport device 12 while being supported from below by the loading transport surface 13, and the attached soil that adheres to the lower end of the crop A that is being sandwiched and transported by the transport device 12 It is comprised with the soil removal apparatus (not shown) to remove.
[0017]
As shown in FIG. 2, the conveying device 12 includes a pair of left and right endless conveying belts 21 that convey the crop A from both the left and right sides while rotating in different directions. 21 has a parallel portion 22 which moves at the same speed in the same direction while being in contact with each other on the outer surface side, at an intermediate position of the forward path surface portion 21a.
[0018]
Then, at the inward positions of both the conveyor belts 21, the drive roller 23, the driven roller 24, and the spring 25 are urged by the spring 25 to press the parallel portion 22 in the forward path surface portion 21a of the conveyor belt 21 from the inside. The tension roller 26 and the inner guide roller 27 are rotatably arranged, and the conveyor belt 21 is looped around these rollers 23, 24, 26 and 27.
[0019]
In addition, a plurality of outer guide rollers 31 are rotatably disposed at the outer positions of both the conveyor belts 21. In other words, two outer guide rollers 31 are rotatably disposed at the outer position of the return path surface portion 21b of the right-side conveyor belt (lower conveyor belt in FIG. 2) 21, which is one of the conveyor belts. Three outer guide rollers 31 are rotatably arranged at the outer position of the return path surface portion 21b of the left conveyor belt 21 (the upper conveyor belt in FIG. 2) which is the other conveyor belt bent sideways. ing.
[0020]
Here, as shown in FIGS. 2 to 6, each conveyor belt 21 has an endless flat belt-like belt main body portion 33. The belt main body portion 33 is made of, for example, a belt-like synthetic rubber material containing canvas. Configured.
[0021]
On the inner surface of the central portion in the belt width direction (vertical direction) of the belt main body portion 33, an engagement protrusion 34 having a substantially trapezoidal cross section is integrally projected over the entire length in the belt length direction. The engagement protrusion 34 is made of, for example, a string-like synthetic rubber material.
[0022]
Further, on the outer surface of the belt main body portion 33 excluding both ends in the belt width direction, an elastically deformable elastic deformable portion 35 having a substantially rectangular cross section that comes into contact with the main body portion A1 of the crop A is provided along the entire length in the belt length direction. It is projected integrally.
[0023]
This elastic deformation part 35 is comprised, for example with the sponge material which is a strip | belt-shaped cushion material which does not damage the crop A. Further, the upper and lower corners of the elastically deforming portion 35 are formed in a circular arc shape. As described above, the conveyor belt 21 is a belt with a sponge having an elastic deformation portion 35 made of a sponge material on the outer surface side.
[0024]
On the other hand, each outer guide roller 31 has an equal-diameter cylindrical roller main body 43 having a round shaft shape. The roller body 43 is fitted on the outer peripheral side of a slightly forwardly inclined vertical roller shaft 42 supported by a shaft support portion (not shown) of the movable machine frame 7 and rotates around the roller shaft 42. It is possible.
[0025]
On the outer surface of both end portions in the axial direction (vertical direction) of the roller main body 43, the outer surface of the portion where the elastic deformation portion 35 of the belt main body 33 is not provided, that is, for example, both ends of the belt main body 33 in the belt width direction. A contact portion 44 for preventing deformation that forms an annular shape that does not deform the elastic deformation portion 35 in the compression direction by the roller main body portion 43 by contacting the contacted surface 33a that is the outer surface of the portion with a predetermined pressing force. It protrudes integrally along the direction.
[0026]
The outer peripheral surface of the flange-shaped contact portion 44 protruding outward from the roller body portion 43 is formed into a surface shape with a predetermined pressing force on the contact surface 33a at the belt width direction end of the belt body portion 33. A cylindrical contact surface 44a that contacts and supports the contacted surface 33a is formed.
[0027]
Further, as shown in FIG. 5, the projecting dimension a from the outer surface of the roller main body 43 of the contact portion 44 of the outer guide roller 31 is an elastic deformation portion before deformation (non-deformation state) due to contact with the crop A. It is set to a value substantially equal to the projecting dimension b from the outer surface of the belt body 33 of 35.
[0028]
Further, the contact portion 44 of the outer guide roller 31 is formed with a movement regulating surface 45 that regulates the movement of the conveying belt 21 in the belt width direction by surface contact with the end surface of the elastic deformation portion 35 in the belt width direction. Yes.
[0029]
That is, for example, the lower surface of the upper contact portion 44 is formed with a movement restricting surface 45 that restricts the upward movement of the conveyor belt 21 by planar contact with the upper surface of the elastic deformation portion 35, and the upper surface of the lower contact portion 44. A movement restricting surface 45 that restricts the downward movement of the conveyor belt 21 by surface contact with the lower surface of the elastically deforming portion 35 is formed. Note that the separation distance between the movement restricting surfaces 45 that are spaced apart from each other via the elastic deformation portion 35 is set to a value substantially equal to the dimension in the belt width direction of the elastic deformation portion 35.
[0030]
On the other hand, as shown in FIG. 6, an engagement groove portion 50 that engages with the engagement protrusion 34 of the conveyor belt 21 is formed along the circumferential direction in the central portion of the driven roller 24 in the axial direction. ing. Although not shown, the driving roller 23, the tension roller 26, and the inner guide roller 27 also have an engaging recess that engages with the engaging protrusion 34 of the conveying belt 21 at the center in the axial direction, like the driven roller 24. The groove part is formed along the circumferential direction.
[0031]
Next, the case where a harvesting operation is performed by the farm work machine 1 will be described.
[0032]
When the agricultural machine 1 is moved forward by the traveling of the tractor 2, the soil of the dredging H 1 is removed by the earth removing device 11 and the dredging H 1 is broken, and the crop A is tilted forward by the conveying device 12 and the digging conveyor 14 It is conveyed in the posture, and the soil attached to the crop A is removed by the soil removing device during the nipping and conveying by the conveying device 12.
[0033]
Then, the worker standing on the step 10 lifts up the predetermined amount of the crop A that is being transported on one side toward the left side by the transport device 12 so as to be taken out backward, and is a work table disposed in the vicinity of the transport device 12. After that, a predetermined amount of the crop A is bundled with a binding member on the work table 9, and the crop A bundled in one is placed on the field H or on the loading platform of a nearby transport vehicle. .
[0034]
Here, the nipping and conveying of the crop A by the conveying device 12 is performed in the parallel portion 22 of the forward path surface portion 21a of the pair of left and right conveying belts 21 that rotate in synchronization with different directions by the power from the driving roller 23.
[0035]
At this time, as shown in FIG. 7, the crop A is sandwiched and conveyed by the elastic deformation portion 35 of the forward path surface portion 21a while the elastic deformation portion 35 is elastically deformed in the compression direction according to the shape of the crop A. Therefore, an excessive force does not act on the crop A from the conveyor belt 21, and the crop A is not damaged.
[0036]
And according to such a conveying apparatus 12, the elastic deformation part 35 which contacts the agricultural product A protrudes from the outer surface of the belt main body part 33 of the conveying belt 21, and the outer surface of the roller main body part 43 of the outer guide roller 31 A flange-shaped contact portion 44 that protrudes from the outer surface of the belt main body portion 33 where the elastic deformation portion 35 is not provided and that does not deform the elastic deformation portion 35 by the roller main body portion 43 is provided. Therefore, it is possible to prevent the elastic deformation portion 35 of the conveyor belt 21 from being molded by the outer guide roller 31, and accordingly, the crop A can be appropriately nipped and conveyed without being damaged.
[0037]
Further, the movement restriction surface 45 of the contact portion 44 of the outer guide roller 31 can appropriately regulate the movement of the conveyor belt 21 in the belt width direction (vertical direction), and the conveyor belt 21 can be stably rotated. Can be secured.
[0038]
In the transport device 12 of the above-described embodiment, the projecting dimension “a” of the contact portion 44 of the outer guide roller 31 from the outer surface of the roller main body 43 is equal to that of the belt main body 33 of the elastic deformation portion 35 in the non-deformation state. Although the case where the protrusion dimension b from the outer surface is substantially equal to the above has been described, the protrusion dimension a of the contact part 44 may be equal to or larger than the protrusion dimension b of the elastic deformation part 35. For example, as shown in FIG. The projecting dimension a may be larger than the projecting dimension b of the elastic deformation part 35 so that a gap 51 can be formed between the outer surface of the belt main body part 33 and the elastic deformation part 35.
[0039]
Further, in the conveying device 12, one elastic deformation portion 35 of the conveying belt 21 is positioned between two flange-like contact portions 44 of the outer guide roller 31 that are spaced apart from each other as shown in FIGS. For example, as shown in FIG. 9, one flange-shaped contact portion 44 of the outer guide roller 31 is positioned between two elastically deformable portions 35 of the conveying belt 21 which are opposed to each other. Good.
[0040]
The conveying device 12 shown in FIG. 9 has a conveying belt 21 in which an elastically deforming portion 35 divided into two on the outer surface of the belt main body portion 33 excluding the central portion in the belt width direction is integrally projected over the entire length in the belt length direction. The elastic deformation portion 35 by contacting the outer surface of the central portion of the roller main body 43 in the axial direction with the contact surface 44a of the contact surface 33a that is the outer surface of the central portion of the belt main body portion 33 in the belt width direction. The outer guide roller 31 is provided with a single deformation preventing contact portion 44 that integrally protrudes along the circumferential direction. Other structural members are basically the same as those shown in FIG.
[0041]
9 can prevent the elastic deformation portion 35 of the conveyor belt 21 from being molded by the outer guide roller 31, and thus properly clamp and convey the crop A without damaging it. For example, the same effects as those shown in FIG.
[0042]
Although not shown, three flange-shaped contact portions 44 project from the three outer surfaces of the central portion and both end portions in the axial direction of the roller main body 43, and 2 of the conveyor belt 21 is provided between the contact portions 44. It may be one in which two elastically deforming portions 35 are positioned.
[0043]
Further, the conveying belt 21 of the conveying device 12 is not limited to a belt with a sponge having an elastic deformation portion 35 made of a sponge material on the outer surface side. For example, the conveying belt 21 may be a rubber corrugated member as shown in FIG. A corrugated belt having an elastically deforming portion 35 formed on the outer surface side may be used, or a belt with a wart, a belt with a crosspiece, etc. may be formed although not shown.
[0044]
Further, the present invention is not limited to the case where the outer guide rollers 31 are disposed at both outer positions of the paired transport belts 21, and the outer guide roller 31 is disposed at at least one outer position of the paired transport belts 21. The outer guide roller 31 may be disposed at the outer position of only one of the conveyor belts 21.
[0045]
Further, the outer guide roller 31 is disposed at an outer position of a portion other than the parallel portion 22 of the transport belt 21, and is disposed at either the outer position of the forward path surface portion 21a or the outer position of the return path surface portion 21b. May be.
[0046]
Further, the outer guide roller 31 is not limited to a fixed type rotatable at a fixed position, and is biased toward the outer surface side of the transport belt 21 by a biasing means such as a spring such as a tension roller. It may be mobile.
[0047]
Moreover, although the conveying apparatus 12 is the most suitable for conveyance of long ridges, such as root abyss, as the crop A, it can also be applied to the conveyance of other crops A other than the root abyss.
[0048]
【The invention's effect】
According to the first aspect of the present invention, the elastic deformation portion that comes into contact with the crop is projected on the outer surface of the belt main body portion of the conveyor belt, and the elastic deformation portion of the belt main body portion is formed on the outer surface of the roller main body portion of the outer guide roller. Since the abutting portion that abuts on the outer surface of the portion that is not provided and does not deform the elastically deforming portion with the roller main body portion can be prevented, the elastically deforming portion can be prevented from being molded by the outer guide roller. It can be properly nipped and transported without being damaged.
[0049]
According to the second aspect of the present invention, since the projecting dimension of the abutment portion from the outer surface of the roller main body portion is equal to or larger than the projecting dimension of the elastic deformation portion from the outer surface of the belt main body portion, the elastic deformation portion is formed by the outer guide roller. It is possible to reliably prevent molding.
[0050]
According to the invention of claim 3, the movement of the conveyor belt in the belt width direction can be appropriately restricted by the movement restriction surface of the contact portion of the outer guide roller.
[Brief description of the drawings]
FIG. 1 is a plan view showing a farm working machine provided with a transport device according to an embodiment of the present invention.
FIG. 2 is a plan view of the conveying device.
FIG. 3 is a perspective view of a conveying belt and an outer guide roller of the conveying device.
FIG. 4 is a plan view of a conveying belt and an outer guide roller of the conveying device.
FIG. 5 is a sectional view of a conveying belt and an outer guide roller of the conveying device.
FIG. 6 is a cross-sectional view of a transport belt and a driven roller of the transport device.
FIG. 7 is a diagram showing a state of agricultural product conveyance by the conveyance device.
FIG. 8 is a cross-sectional view of a conveying belt and an outer guide roller of a conveying device according to another embodiment of the present invention.
FIG. 9 is a cross-sectional view of a conveying belt and an outer guide roller of a conveying device according to still another embodiment of the present invention.
FIG. 10 is a plan view of a conveyance belt and an outer guide roller of a conveyance device according to still another embodiment of the present invention.
[Explanation of symbols]
12 Transport device
21 Conveyor belt
31 Outer guide roller
33 Belt body
35 Elastic deformation
43 Roller body
44 Contact part
45 Movement Restriction A Agricultural crops

Claims (3)

A pair of conveyor belts that sandwich and convey the crops;
An outer guide roller disposed at an outer position of at least one of the pair of conveying belts,
The conveyor belt has a belt main body portion, and an elastic deformation portion that protrudes from an outer surface of the belt main body portion and contacts the crop,
The outer guide roller is in contact with an outer surface of a roller main body portion and a portion of the belt main body portion that is not provided with the elastic deformation portion and protrudes from the outer surface of the roller main body portion, thereby causing the elastic deformation portion to move to the roller main body. And a contact part which is not deformed by the part. 2. The conveying device according to claim 1, wherein a projecting dimension of the abutting portion from the outer surface of the roller main body portion is equal to or larger than a projecting dimension of the elastically deforming portion from the outer surface of the belt main body portion. 3. The conveyance according to claim 1, wherein a movement regulating surface for regulating movement of the conveyance belt in the belt width direction by contact with the elastic deformation portion is formed at the contact portion of the outer guide roller. apparatus.

Images