JPH0691775B2 - Onion harvesting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an onion harvesting device that cuts a stalk of a dug onion and recovers only a spherical portion of the onion.

[Prior Art] Conventionally, as an onion harvesting device of this type, Japanese Patent Application No. 60-33
As the applicant has already filed as No. 741 (No. Sho 61-150426), the onions digged by the digging device are temporarily lifted up by the conveying device composed of an endless chain, and the conveying device is transferred. At the terminal end, the onions are discharged onto the rocking shelves located below it, and the onions are inverted in the process of repeatedly rocking the rocking shelves in the transport direction, and the reversed onions are provided below the rocking shelves. The cutting blade was used to cut into a predetermined length and collect it in a container at the rear of the machine.

[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional device, the onions are reciprocally rocked on the rocking rack and are reversed while being transferred backward, so that the onions move downward from the bars of the rocking rack. Since the method of cutting the stalks of hung onions with a rotary blade was adopted, some of the onions are not inverted to the downward state and some are collected with the foliage remaining. Yes, it was not possible to reliably cut the leaf stem.

[Means for Solving the Problem] The present invention has been proposed in view of the above-mentioned problems, and has taken the following means.

That is, the excavated onion a is transferred to the rear of the machine while being lifted upward, and the conveying means 3 and 4 for reversing the onion at the transfer end portion, and the stem cutting for cutting the reversible onion a leaf stem c And a means (16), wherein the leaf cutting means (16) is arranged in the vicinity of a point beyond the point at which the conveying direction of the onion (a) is changed to a substantially inverted state. To do.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

First, the configuration will be described. FIG. 1 is a side view of the entire onion harvesting device 1 according to the present invention, in which the onion harvesting device 1 obtains rotational power from a PTO shaft of a tractor and is rotationally driven in the direction of arrow A. , A first transport means 3 for transporting the dug up onion a upward (direction of arrow B), and a rearward receipt of the onion a thrown downward from the transport end portion of the first transport means. The second transport means 4 and the like are provided, and between the first and second transport means 3 and 4,
A distribution device 5 is provided which distributes the onions a discharged from the end of the first conveying means 3 in the lateral direction.

The digging means 2 is driven by a chain and a sprocket mechanism, and the first conveying means 3 is obliquely supported by the machine frame 7 so that the upper end thereof is tilted backward when viewed from the side, and by a transmission mechanism described later, The rotation in the direction of the arrow B is applied to the transport unit.

The first conveying means 3 is formed by mounting a plurality of rods 9 on which the mounting portions of the onions a are formed between the left and right chains 8 and 8, and the spherical portions b of the onions a are placed on the rods 9. And lift upwards.

The left / right distributing device 5 provided so as to face the transfer end portion of the first conveying means 3 is composed of a plurality of rollers 10 ..., and the rollers 10, 10 arranged in upper and lower two stages are spaced at appropriate intervals in the lateral direction. Each is rotatably supported around the axis in the front-rear direction.
Therefore, the onions a discharged from the upper end portion of the first conveying means 3 have the roller groups 10, 10 ... Adjacent to the left-right lateral direction.
It is passed on to the second transport means 4 through the space.

The transfer unit of the second transport means 4 is configured by an endless chain 11, and a box body 12 opened only on the upper surface of the chain 11 is formed.
Are fixed in a continuous manner in the transfer direction. As shown in FIG. 2, each of the box bodies 12 constituting the second conveying means 4 is provided in a positional relationship of passing between the rollers 10 when viewed from a plane. (4 in this embodiment
The structure in the case of digging the rowed onion a is shown. ) 13 is a guide body for the onion leaf stem portion c provided close to the left and right of the box body 12 and along the transport direction, and each guide body 13 supports the horizontal plate portion 13a and this. Vertical plate part 1
The horizontal plate portion 13a is fixed to the upper portion of the vertical plate portion 13b in a substantially horizontal state in a state of being positioned above the upper end of the box body 12. As shown in FIG. 1, the terminal end thereof extends around the lower part of the sprocket 14 on the rear side around which the chain 11 of the second conveying means 4 is wound, and extends in a detour so as to be directed forward.

The height of the vertical portion 13b at the starting end portion of the guide body 13 is configured to be lower than the other portions, and the distance between the adjacent horizontal plate portions 13a and 13a when viewed from a plane is wide on the starting end side,
It is configured to gradually narrow.

That is, as shown in FIGS. 2 and 4, the horizontal plate portions 13a, 1a
The distance between the starting ends of 3a is wide enough to allow the spherical portion b of the onion a to pass through, and the distance is reduced toward the rear side.
There is a fixed interval from the middle, and a gap through which only the leaf stem portion c of the onion a can pass is provided in the gap.

When the box body 12 on which the onion a is placed is transferred to the rear in this state, the box body 12 that has rotated around the outer circumference of the sprocket 14 on the rear side is eventually inverted, so that the leaf stem part c of the onion a also faces downward. Invert. In this case, when the onion a passes through this corner portion, the spherical portion b of the onion a has a box body 12 and a guide body 13
The leaf stem portion c is largely shaken to the outside by the action of the centrifugal force. Therefore, the leaf stem c is maintained in a drooping posture in which the leaf stem c faces downward as soon as the leaf stem c passes therethrough.

The onions a conveyed in this posture are directly transferred to the auxiliary guide body 15 having a mountain-shaped cross section, which is continuously provided in front of the guide body 13.

Reference numeral 16 denotes a leaf cutting device having a rotary blade 17, which is provided in the vicinity of the reversing portion so that the tip of the rotary blade 17 faces. Below the second conveying means 4 and in front of the auxiliary guide body 15, a conveyor as a conveying means that receives the onion a in which the leaf stem portion c has been cut and sends it outward in the lateral direction.
A container 20 for collecting onions a is placed on the machine frame 7 at the end of the conveyor 18.

Next, the transmission system of this device will be described based on the power transmission diagram of FIG.

Reference numeral 22 is a bevel gear box attached to the front of the machine frame 7, which has an input shaft 23 mounted on the front side and a pulley 25 fixed to the end of a shaft 24 taken out sideways. The reduction gear case 26 installed at the lower part of the machine frame 7 has two shafts 27 and 28 horizontally projecting horizontally, the shaft 27 having a two-stage pulley 29, and the shaft 28 having a sprocket 30.
Is installed.

31 is a belt wound between the pulleys 25 and 29, 32 and 33 are the top shaft and the under shaft of the first conveying means 3, and two sprockets 3 are provided on one side of the top shaft 32.
4, 35 are fixed, and a sprocket 36 is fixed on the opposite side. The chain 8 is hung between the sprocket 38 attached to the under shaft 33 of the first conveying means 3 and the sprocket 36 of the top shaft 32, and the sprocket 39 fixed to the outer end of the under shaft 33 and the digging means. Sprocket attached to the outer end of the top shaft 40 of No. 2
A chain 42 is hung around 41. 48 is the second
A sprocket 43 fixed to the sprocket 35 of the first conveying means 3 and the drive shaft 48 by means of a drive shaft for driving the conveying means 4 and having two sprockets 43 and 44 fixed to the ends thereof.
The chain 45 interposed therebetween is configured to transmit the rotational power of the first transfer means 3 side to the second transfer means 4 side. Reference numeral 47 is a chain wound between a sprocket 30 fixed to the shaft 28 of the reduction gear case 26 and a sprocket 34 fixed to the end of the top shaft 32 of the first conveying means 3, and 50.
Is a drive shaft that transmits rotational power to the stem cutting device 16, 51
Is a pulley fixed to the end of the shaft 50, and 52 is a belt wound between the pulley 51 and a two-stage pulley 29 attached to the end of the shaft 27 mounted on the reduction gear case 26.

55 is a transmission mechanism for driving the drive conveyor 18, which is driven by obtaining rotational power from the drive shaft 48,
The rotation is further transmitted to the conveyor 18 side by the chain / sprocket mechanism 56, and the conveyor 18 is rotated in one direction.

Next, the operation of this embodiment will be described.

When the onion harvesting device 1 is connected to a power vehicle such as a tractor and pulled to advance the machine body while driving each rotating part, the transport chain forming the digging means 2 and the chain 8 of the first transport means 3 are shown in FIG. It rotates in the directions of arrows A and B, whereby the dug onion a is sequentially lifted upward. Then, when the onion a is dropped and released downward from the transfer end portion of the first conveying means 3, the onion a continuously dropping with the heavy spherical portion b downward contacts the rollers 10 of the sorting device 5. Dispersed as appropriate in the left and right lateral directions, each roller
It is housed in the box body 12 of the second conveying means 4 through 10 ... In this state, when the onion a is sent to the lower side in the conveying direction (backward in this embodiment), the slanted or laterally oriented leaf stem portion c moves while the leaf stem portion c passes through the gap of the guide body 13. The orientations are aligned, and the leaf stems c are transferred to the cutting device 16 side while protruding upward from the gap of the guide body 13.

When the onion a reaches the end side of the second conveying means 4 and the box body 12 starts to invert, a large centrifugal force acts on the leaf stem c, so that the leaf stem c is guided while the inversion ends. It will fly out vigorously from the gap of the body 13. The protruding stem portion c is further sent to the auxiliary guide body 15 as shown in FIG. 5 while being held in the drooping posture. Then, the onions a are successively pushed forward by the onions a themselves sent from the rear side or by the box body 12 moving forward, and during this period, the leaf stem cutting device rotating below this.
The leaf stem c is cut into a predetermined length by 16 rotary blades 17. Then, the onion a from which the leaf stem portion c has been cut is dropped on the conveyor 18, conveyed to the lateral outside of the machine body, and collected in the container 20 placed on the machine frame 7.

[Effects of the Invention] Since the present invention is configured as described above, it has the following technical effects. That is, since the leaf stem cutting means 16 for cutting the leaf stem portion c of the onion a is provided in the vicinity of the point beyond the point where the conveying direction is reversed, centrifugal force acts and the leaf stem cutting means 16 is largely swung to one direction. Since the cutting blade can surely act on the leaf stems c immediately after being aligned, mistakes in cutting off the leaf stems c can be reduced.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an overall side view of an onion harvesting device, FIG. 2 is a plan view with a part omitted, FIG. 3 is a power transmission diagram showing a power transmission system, and FIG. FIG. 5 and FIG. 5 are perspective views of the main part. DESCRIPTION OF SYMBOLS 1 ... Onion harvesting device 2 ... Digging means 3 ... First conveying means 4 ... Second conveying means 16 ... Leaf stem cutting device

Claims (1)

[Claims] 1. A transporting means (3, 4) for lifting the dug up onion (a) to the rear of the machine while lifting it upward, and inverting the onion at the transfer end, and cutting off the leaf stem (c) of the inverted onion (a). A foliage cutting means (16), and the foliage cutting means (16)
The onion harvesting device is characterized in that it is arranged in the vicinity of a point beyond the point where the conveying direction of the onion a is changed to a substantially inverted state.