JPH0125525Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a vacuum device in a vacuum seeding machine.

For example, a vacuum seeding machine that is attached to a traveling vehicle body such as a tractor via a three-point link mechanism has a vacuum seeding device, a vacuum device, and a fertilization device attached to a tool par of a mounting frame.

The vacuum device has a fan section and a drive section that drives the fan, and the drive section increases the speed of power from the PTO shaft of the tractor and transmits it to the fan. Conventionally, this vacuum device has been placed in a position close to the vacuum seeding device on the rear side of the fertilization device, requiring a large installation space and without a member to guard the surrounding area, and a case enclosing the power transmission means of the drive unit. , and a special mounting member was also required.

In view of these conventional problems, the present invention has a structure in which the drive section of the vacuum device is placed inside the mounting frame that has a tool bar and a three-point link connection, so that the mounting frame can protect the vacuum device. It is an object of the present invention to provide a mounting structure for a vacuum device in a vacuum seeding machine that can omit a case of a drive part and can be configured compactly.

A feature of the present invention for achieving this purpose is that a mounting frame is provided on the traveling vehicle body via a three-point linkage mechanism, and a vacuum seeding device, a vacuum device, and a fertilizing device are attached to this mounting frame. The mounting frame has a pair of left and right lower link connecting parts in front of the tool bar and a top link connecting part in the upper front, and the vacuum device is a vacuum seeding machine having a fan part and a drive part for driving the fan. , the vacuum device 7
The drive unit 22 is located and fixed inside the mounting frame 4 of the support frame 19 that supports the drive unit 22, and the drive unit 22 overlaps the mounting frame 4 in a side view.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 1 denotes a vacuum seeding machine attached to an agricultural tractor (not shown) via a three-point link mechanism 2, and a mounting frame 4 having a tool bar 3 includes a fertilizing device 5, a vacuum seeding device 6, and A vacuum device 7 etc. are attached.

The mounting frame 4 is attached to the horizontal cylindrical tool bar 3 on the left and right sides.
A pair of base plates 11 are fixed or removably fixed in a forward-protruding shape, and a pair of left and right frames 12 made of plate material are provided extending upward and inward from the front part of each base plate 11, and the upper portions of the left and right frames 12 are provided. are connected in close proximity to each other by pins 13, and each frame 12 and base plate 11 are connected to each other by a support plate 14.

A pin protruding outward is provided at the front of the base plate 11 at the left and right front ends of the mounting frame 4, and a lower link connecting portion 16 for connecting with the lower link 15 is formed. The pin 13 serves as a connection 18 for the top link 17.

Conventionally, the left and right frames 12 have a triangular mountain shape when viewed from the front, but in the present invention, the left and right frames 12 have a pair of rectangular fitting shapes so that the upper half of the rectangular support frame 19 can be fitted therein.

The support frame 19 is formed by bending both sides of a rectangular plate in the forward direction, and the support frame 19 is formed by bending both sides of a rectangular plate in the forward direction.
It is fixed to the vacuum device 7 via bolts etc.
The drive unit 22 is supported.

The vacuum device 7 has a fan section (blower section) 21 and a drive section 22, increases the rotation speed of the PTO shaft of the tractor to rotate the fan 23, and applies a vacuum state to the vacuum seeding device 6 by the rotation of the fan 23. This is what we provide.

The support frame 19 includes bearing members 24, 25, 2.
6 through the input shaft 27, intermediate shaft 28 and output shaft 2
9 is rotatably supported. One end of the input shaft 27 projects forward from the support frame 19 and is connected to the PTO shaft of the tractor via a universal joint 30, and a large pulley 31 is fixed to the other end. A small pulley 32 and a large pulley 33 are fixed to the intermediate shaft 28, and a belt 35 is hung between the small pulley 32 and the large pulley 31. A small pulley 34 is fixed to one end of the output shaft 29, and a belt 36 is hung between it and the large pulley 33 of the intermediate shaft 28.

The large pulleys 31, 33, small pulleys 32, 34
A power transmission means 37 is constituted by the belts 35, 36, etc., which speeds up the rotation of the input shaft 27 by two steps and transmits the same to the output shaft 29. These may be chain or gear transmissions.

The bearing member 26 has a double structure inside, forms an air passage 26c between the bearing tube 26a and the outer circumferential wall 26b, and has a connection part 39 for attaching a plurality of hoses 38 to the outer circumferential wall 26b. are doing. That is, this bearing member 26 constitutes a part of the fan section 21, and a fan case 40 split into front and rear halves is attached to the rear end of the outer peripheral wall 26b, and the output shaft 2
It surrounds the fan 23 attached to the rear end of 9,
A discharge port 41 is formed in the outer peripheral portion of the fan case 40 .

The vacuum device 7 sucks air in the vacuum seeding device 6 through the hose 38 by rotating the output shaft 29 and the fan 23, and discharges it from the discharge port 41 through the air path 26c. The drive unit 22 is surrounded by the left and right frames 12 and the support plate 14, which serve as a case for the power transmission means 37, and prevent hands from being inserted from the outside to ensure safety. At the same time, the driving part 22 does not require a special member for mounting the tool bar 3, and also does not require its own mounting space, making it compact. That is, the support frame 19 supporting the drive unit 22 is connected to the frame 12 of the mounting frame 4.
The driving part 22 is located and fixed inside the mounting frame 4 and is fixed thereto so as to mutually reinforce each other, and the driving part 22 overlaps with the frame 12 and the support plate 14 of the mounting frame 4 in a side view, and is protected and covered.

The fertilizer application device 5 has a fertilizer hopper 4 at the upper part of the delivery section 44.
5, a fertilizing chute 46 is suspended from the bottom thereof, and is attached to the tool bar 3 via a support stand 47. Reference numeral 48 denotes a furrower for forming fertilizing grooves, which is also attached to the tool bar 3, and the fertilizer chute 46 spreads fertilizer into the grooves formed by the furrower 48.

The number of the fertilizer application devices 5 and the vacuum seeding devices 6 are the same, and they are usually arranged in two or four rows, with the same number on both sides of the seeding machine 1 in the width direction, and the vacuum device 7 is one in the center. It is located. Furthermore, as is clear from FIG. 1, the vacuum device 7 and the fertilization device 5 are arranged in a front-back arrangement with the tool bar 3 at the center, and the center of gravity of the seeding machine 1 is located closer to the front.
The fan case 40 and the fertilizer hopper 45 overlap in side view, and the fan case 40 is positioned inside the two fertilizer hoppers 45, and the fan part 40 is guarded by the fertilizer hopper 45. ing. Reference numeral 49 denotes a drive wheel mounted and supported on the tool bar 3, which rotates as the seeding machine 1 is towed, and uses its rotational power to drive the delivery section 44 of the fertilizing device 5 and the seeding device 6, which will be described later, via a transmission means. Drive the feeding section.

The vacuum seeding device 6 has a device frame 51 attached to the tool bar 3 via a parallel link mechanism 52 so as to be able to move up and down, and has a seed dispensing section 54 at the bottom of a seed hopper 53. 7
A hose 38 is connected.

Reference numerals 55 and 56 indicate a soil covering device and a pressing wheel, respectively, which are attached to the device frame 51 and located behind the seed dispensing section 54, and 57 indicates a furrowing device, which is attached to the tool bar 3 and precedes the seed dispensing section 54.

4 and 5 show the inside of the seed feeding section 56. The feeding portion 54 has a circular rotary plate 6 inside.
The left side is a seed chamber 61 that communicates with the hopper 53, and the right side is a fan section 21.
The air chamber 63 communicates with the air chamber 62 and is sealed by an open/close lid 62.

The rotary plate 60 is fixed to a support shaft 64 and rotated by power from the drive wheel 49, and has a large number of suction holes 65, which communicate the two chambers 61 and 63.
66 are provided along the circumferential direction of the circumferences A and B.

The seed chamber 61 is divided into a seed storage section 68 and a feeding passage 69 by a partition wall 67, and a feeding opening 70 is formed at the lower end of the feeding passage 69. A reduction passage 72 is formed between the horizontal cylinder portion 71 in the center and the partition wall 67.

The air chamber 63 has a negative pressure chamber 74 formed between the outer circumferential wall of the opening/closing lid 62 and an inner circumferential wall 73 formed therein, which corresponds to the suction holes 65 and 66 arranged on the circumferences A and B. The lower part of the pressure chamber 74 faces the outlet 70 and is closed, forming a negative pressure release section 75.

When the air in this air chamber 63 is sucked by the fan section 21 through the hose 38, the rotary plate 60
With the rotation of the seed chamber 61, the seeds C in the seed chamber 61 are sequentially 2
The seeds are adsorbed by the suction holes 65 and 66 in the row, and are sent from the seed storage section 68 through the delivery passage 69 to the delivery port 70. At the delivery port 70, the negative pressure on the air chamber 63 side is released, and the seeds are absorbed into the suction holes. It falls from 65 and 66 and is sown. If two seeds C are adsorbed in one suction hole 65, 66, or if an extra seed is caught between two properly adsorbed seeds, the main and sub-engaging bodies 77, 78 will drop the seeds. The seeds are returned to the seed storage chamber 68 including the return passageway 72.

The main engaging body 77 is disposed radially outward of the outer circumference B where the suction holes 66 are arranged and in contact with the rotary plate 60 within the seed chamber 61, and its lower end is connected to the feeding portion 54 by bolts. The main engaging body 77 is supported to be swingable. The main engaging body 77 is provided with saw-shaped teeth 79 having acute-angled tips, and the tips of the teeth 79 are made larger than the radius r of the outer circumference B on which the suction holes 66 are arranged. It is arranged on an arc of radius R.

Reference numeral 80 denotes a tapered elastic operating body of the main engaging body 77, and the pin portion 82 of the interlocking piece 81, which rotates together with the tapered elastic operating body, is engaged with the U-shaped notch 38 formed at the upper end of the main engaging body 77, so that the main engaging body 71 can be swing-operated by an operating body 80. Reference numeral 84 denotes a fixing plate provided on the seed hopper 53. The fixing plate 84 has a large number of adjusting holes 85 formed in an arc shape, and the bent tip of the operating body 80 is inserted into the adjusting holes 85. The main engaging body 77 is locked in a removable manner by elastic curvature, and the main engaging body 77 is fixed in a substantially radial direction with respect to the outer circumference B so as to be able to be adjusted toward and away from the outside of the feeding portion 54 .

The sub-engaging body 78 is illustrated as a bent round bar in the illustrated example, and has a tapered body 86 at one end thereof.
is rotatably provided as a tapered portion 87, and the tapered portion 87 is connected to the rotating plate 6 from the teeth 79 of the main engaging body 77.
The suction holes 65 and 66 on the side surface of the rotary plate 60 on the hopper side are located close to the center position between the circumferences A and B on the front side in the rotational direction of the rotary plate 60. and,
The other end is rotatably inserted into and supported by the side wall on the hopper side of the feeding section 54, and an elastic operating body 8 is attached to the end.
8 is fixed, and the bent tip is attached to the fixing plate 8.
4, the operating body 88 is removably engaged with an adjustment hole 89 formed in an arc shape around the pivot axis of the operating body 88 by the elastic curvature of the operating body 88.
The position between the circumferences A and B of 7 is fixed so as to be adjustable from the outside of the feeding portion 54.

Conventionally, the sub-engaging body 78 had only a tapered tip, and the contact with the seeds C was not smooth, so that only the excess seeds were thrown away to the necessary seeds. By providing the freely adjustable taper body 86, the contact is made smoothly, and only the excess seeds are pushed and dropped from the adsorbed state, and the necessary seeds are adsorbed more normally, thereby preventing missing grains. can. The tapered body 86 is preferably made of synthetic resin, but may be made of other materials.

According to the present invention described in detail above, the support frame 19 supporting the drive unit 22 of the vacuum device 7 is located and fixed inside the mounting frame 4, and the drive unit 22 is fixed.
2 overlaps the mounting frame 4 in a side view, so the mounting frame 4 and the support frame 19 can mutually reinforce each other, and the length from front to back can be shortened, and the mounting frame 4 protects and covers the drive section 22. be able to.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, Fig. 3 is an enlarged cross-sectional view taken along the - line in Fig. 2, and Fig. 4 is a seed of a vacuum seeding device. FIG. 5 is a longitudinal cross-sectional view of the feeding portion, and FIG. 5 is a cross-sectional view taken along the - line in FIG. 4. 1...Vacuum seeding machine, 2...3-point linkage mechanism, 3
...Tool bar, 4...Mounting frame, 5...Fertilizer, 6...Vacuum seeding device, 7...Vacuum device, 11
... Base plate, 12 ... Frame, 14 ... Support plate, 16 ... Lower link connection portion, 18 ... Top link connection portion, 19 ... Support frame, 21 ...
Fan section, 22... Drive section, 23... Fan, 3
7...Power transmission means.

Claims (1)

[Scope of utility model registration request] A mounting frame 4 is attached to the traveling vehicle body via a three-point linkage mechanism 2.
A vacuum seeding device 6, a vacuum device 7, and a fertilization device 5 are attached to this mounting frame 4, and the mounting frame 4 has a pair of left and right lower link connecting portions 16 in front of the tool bar 3 and a top link in the upper front. In a vacuum seeding machine, the vacuum device 7 has a fan section 21, a drive section 22 that drives the fan 23, and a support frame 19 that supports them. 22 is located and fixed inside the mounting frame 4, and the drive unit 22 overlaps the mounting frame 4 in a side view. Mounting structure.