JPS6211370Y2 - - Google Patents

Description

[Detailed explanation of the invention] When performing seeding work by connecting a vacuum seeding machine with a vacuum seeding drum and a blower attached to the rear of the tractor to suck air from the vacuum seeding drum, when the machine is operated at the edge of the field, a hydraulic vacuum is used to operate the machine at the edge of the field. The seeding machine must be raised.

Incidentally, the mounting position of the power take-off shaft differs depending on the type of tractor, sowing, etc. Therefore, depending on the make and model of conventional tractors, when the vacuum seeding machine is raised, the inclination of the transmission shaft that transmits power from the tractor's power take-off shaft to the vacuum seeding machine's power intake shaft may change at both ends. The permissible rotational operating angle of the universal joint was sometimes exceeded, and as a result, it was necessary to stop the rotation of the tractor's power take-off shaft every time the machine was turned. When this happens, the power intake shaft of the vacuum seeding machine, which transmits power from the power output shaft through the transmission shaft, and the blower connected thereto also stop rotating, so when the machine is turned, the vacuum seeds inside the vacuum seeding drum are Even if the seeds adsorbed on the drum fall and the blower is driven again from the tractor's power output shaft via the transmission shaft to adsorb the seeds to the vacuum seed drum, the seeds have to travel several meters before they fall. There were some unavoidable flaws.

Therefore, in order to eliminate the above-mentioned defects, the present invention provides support columns on both sides on a frame that is removably attached to a three-point link hitch of a tractor, and attaches mounting bases to the support supports that can be adjusted up and down. This is a sowing system that is equipped with a power intake shaft and a blower connected to it by a transmission mechanism, and the power intake shaft and the power output shaft of the tractor are connected by a transmission shaft via a universal joint, and connected to the rear of the frame. The blower is connected to the inside of the vacuum seed drum, which is mounted on the shaft within the vacuum seed drum of the tractor, through a flexible air suction pipe, and the power can be increased by adjusting the mounting base up and down as appropriate depending on the make and model of the tractor. The power intake shaft of the vacuum seeding machine can be placed in the proper position by moving the intake shaft and blower up and down together and fixing it in the moved position. The universal joint of the transmission shaft from the power take-off shaft to the power take-in shaft of the vacuum seeding machine is within its permissible rotational movement angle, and vacuum seeding can be performed by hydraulic pressure without stopping the rotation of the tractor's power take-off shaft at the edge of the field. The machine can be raised and rotated, which is convenient for handling, and it prevents the seeds adsorbed to the vacuum seed drum inside the vacuum seed drum from falling, and then lowers the vacuum seeding machine. This invention relates to a vacuum seeding machine that can immediately resume a predetermined seeding operation without causing any hindrance to the operation.

To explain the structure of one embodiment of the present invention shown in the drawings, a indicates a tractor, 1 is the body of the tractor a, 2 is a three-point link hitch, and 3 is a power take-off shaft.

b shows a multi-row vacuum fertilizer seeding machine connected to the rear of the tractor a, 4 is the frame of the fertilizer seeding machine b, and a mounting bracket 5 fixed on the front end of the frame is removably attached to the three-point link hitch 2. . Reference numerals 6 and 6 denote support columns on both sides erected on the front part of the frame 4, and their upper ends are connected by a top plate 7. 8 is the mounting base,
The pipes 9, 9 forming the both sides of the pillars 6, 6
Tightening bolts 10 are screwed into the upper and lower screw holes on the outside of the pipe 9, and a blower 11 is fixed to the rear of the upper part of the mounting base 8 , and its rotating shaft 12 is connected to the upper and lower parts of the mounting base 8 . It is supported by a bearing 13 fixed on the center part of the upper piece, and a power intake shaft 15 is fitted into a bearing 14 attached to the center part of the lower part of the mounting base 8 . The front protrusion is connected by a belt transmission mechanism 16, and a tension pulley 17 is attached to the belt transmission mechanism 16. Therefore, the lower end of the adjustment bolt 19 with the handle 18 screwed into the central screw hole of the top plate 7 is rotatably fitted into the receiver 20 on the bearing 13, and the mounting base 8 is suspended by the adjustment bolt 19. ,
The power take-off shaft 3 and the power take-in shaft 15 are connected by a telescoping power transmission shaft 22 provided with a universal joint 21 at both ends.

Reference numeral c indicates vacuum fertilization seeding bodies arranged in multiple rows at the rear of the frame 4, and 23 is a fertilizer tank of the fertilization seeding body c, in which an agitation splashing body is mounted on a shaft in the bottom, although not shown. Reference numeral 24 denotes a fertilization groove cutter that is shaped like a square when viewed from above and is installed below the fertilizer tank 23, and a square-shaped guide bar 25 is installed in the rear part of the groove so as to be inclined backward and downward, so that the fertilizer tank 23 can be protruded from the rear. The lower end of the fertilizer fall gutter 26, which is provided with its upper opening facing the top, is placed over the center of the rectangular guide bar 25. 27 is fertilization furrow cutter 2
4, a dish-shaped soil-covering disk on both sides arranged in an inverted V shape when viewed from above and rotatably supported; 28 is a vacuum seeding drum installed at the lower rear of the frame 1;
Although not shown, a vacuum seed drum with a large number of holes bored inside is mounted on an axis, and the inside of the vacuum seed drum is communicated with the air intake port of the blower 11 through a flexible air suction pipe 29.
A seed tank 30 is placed above the vacuum seeding drum 28.
A sowing groove cutter 31 which is shaped like a triangle when viewed from above is provided below. Reference numeral 32 denotes a claw-shaped pressure roller rotatably supported on the rear end of the frame 1, and reference numeral 33 denotes a wheel mounted on both intermediate sides of the frame 1 by an axle 34, and although not shown, the axle 34 and the fertilizer tank 23 are connected to each other. The rotating shaft of the agitation splashing body inside the vacuum seeding drum 28 and the rotating shaft of the vacuum seed drum inside the vacuum seeding drum 28 are respectively connected by a chain transmission mechanism.

Next, its effect will be explained. When the adjustment bolt 19 is rotated in one direction or the other with the handle 18, the pipes 9, 9 slide on the struts 6, 6, and the blower 11,
The mounting base 8 with the power intake shaft 15 is raised or lowered.

Therefore, the three-point link hitch 2 is raised using hydraulic pressure to raise the fertilizing and seeding machine b. At that time, tractor a
If the universal joint 21 of the transmission shaft 22 exceeds the permissible rotational movement angle due to differences in the mounting position of the power take-off shaft 3 depending on the type and model of the Then, the mounting base 8 descends along the struts 6, 6, and the angles formed by the power output shaft 3 and the transmission shaft 22, and between the transmission shaft 22 and the power intake shaft 15 gradually become larger, so set the mounting base 8 appropriately. When the transmission shaft 22 is lowered to this position, the universal joints 21 at both ends of the transmission shaft 22 will be within the permissible rotation angle. Therefore, tighten the bolts 10 on both sides at the above position and attach the mounting base.
8 to the support 6.

Therefore, after lowering the fertilizing seeding machine b and placing its wheels 33 on the ground and putting fertilizer into the tank 23 and seeds into the tank 30, the tractor a starts traveling and the power output shaft 3 is driven. , groove cutters 24, 31 and both side soil covering disks 27 of fertilizing and seeding machine b
The pressure rollers 32 are grounded and the soil covering disks 2 on both sides are pushed into the ground by ground resistance.
7. The machine moves forward while the pressure roller 32 and wheels 33 rotate.

Therefore, the rotating shaft 12 of the blower 11 is driven from the power output shaft 3 of the tractor a through the transmission shaft 22 with the universal joint 21, the power intake shaft 15, and the transmission mechanism 16, and the suction action of the blower 11 drives the rotary shaft 12 of the blower 11. The inside of the seed drum of the sowing drum 28 is made vacuum through the suction pipe 29, and the seeds in the tank 30 are adsorbed by the seed drum, and at the same time, the seeds in the fertilizer tank 23 are stirred and splashed out through the transmission mechanism from the wheels 33. Since the seed drum in the sowing drum 28 rotates at an appropriate speed, the fertilizer in the tank 23 is gradually stirred by the agitating splash body and splashed into the falling gutter 26, and the fertilizer is released from the lower end of the falling gutter 26. The seeds in the tank 30 are transferred downward as the seed drum in the sowing drum 28 rotates, and the seeds in the tank 30 are transferred downward as the seed drum in the seeding drum 28 rotates, and the seeds are sucked at the lower end. is cut off and falls into the groove cutter 31.

Therefore, fertilizer is applied in two rows from both sides of the rear end of the guide metal 25 on both sides of the fertilization groove formed by the groove cutter 24, and then the soil on both sides of the fertilization groove is averaged inward by the soil covering disks 27 on both sides. Push the soil up and cover the trench.
Next, a thin seeding groove of an appropriate depth is created in the center of the upper surface of the covered soil using a groove cutter 31, and seeds are sown from the seed drum in the seeding drum 28 into the groove, and the subsequent roller 32 passes over the groove. The soil rolls and pushes the soil on both sides of the seeding groove inward, covering the seeds with soil and compressing it at the same time, completing the fertilization and seeding work.

When you reach the edge of the field and turn the machine, you can use hydraulic pressure to raise the three-point link hit 2 to raise the fertilizer and seeding machine b while keeping the fertilizer and seeding machine b in the above-mentioned state. Of course, the universal joint 21 is maintained within the permissible rotation angle, so the power take-off shaft 3 can be smoothly connected to the universal joint 21 and the transmission shaft 22.
Power is transmitted to the power intake shaft 15 through the drive shaft 15, and the blower 11 continues to be driven, so that the seeds in the tank 30 are attracted and held by the seed drum in the seeding drum 28.
On the other hand, since the rotation of the wheel 33 stops as soon as it leaves the ground, the rotation of the stirring splash body in the tank 23 and the seed drum in the seeding drum 28 connected to it also stops, and the fertilizing and sowing work is stopped. The machine continues to run in this state.

After that, when the three-point link hitch 2 is lowered and the fertilizer seeding machine b is lowered, its wheels 33 are brought into contact with the ground.
The wheel 33 rotates when it touches the ground, and the stirring splash body in the tank 23 and the seed drum in the seeding drum 28 connected thereto start rotating, and the fertilization and seeding work is immediately resumed.

Since the vacuum seeding machine of the present invention is configured as described above, the power intake shaft and
By vertically adjusting the mounting base with the blower, the power intake shaft of the vacuum seeding machine can be placed at an appropriate position. Therefore, regardless of the make and model of the tractor, when attaching the vacuum seeding machine to any tractor, the universal joints at both ends of the transmission shaft from the tractor's power take-off shaft to the vacuum seeding machine's power take-in shaft are always the same. Within the rotational movement angle, the machine can be rotated by raising the vacuum seeding machine while smoothly transmitting power to the blower of the vacuum seeding machine via the transmission shaft without stopping the tractor's power extraction shaft at the edge of the field. The vacuum seeding machine allows you to continue working easily without having to worry about raising or lowering the vacuum seeding machine, and you can work for long periods with less fatigue.The power intake shaft and blower mounting base can be raised and lowered smoothly and finely as desired using adjustment bolts. It is adjustable and convenient to handle, and there is no risk of damaging the universal joint.

Furthermore, even when the vacuum seeding machine is raised at the edge of the field and the machine is rotated, the blower of the vacuum seeding machine does not stop driving, so the seeds stuck to the vacuum seed drum inside the vacuum seeding drum of the vacuum seeding machine are In addition to being able to prevent the machine from falling, the vacuum seeding machine can be lowered and the intended sowing work can be resumed immediately, so there is no problem with work, improving work efficiency, and the structure is simple and easy. It can be manufactured at a low cost, and its operation is light.

[Brief explanation of the drawing]

FIG. 1 is a side view of a tractor equipped with a multi-row fertilizer seeding machine according to an embodiment of the present invention, with the front portion of the tractor cut away. Figure 2 is an enlarged side sectional view of the main part.
FIG. 3 is a front view of the same as above. a...Tractor, 2...3-point link hitch, 3
...Power take-off shaft, 4...Frame, 5...Mounting bracket, 6...Strut, 8 ...Mounting base, 11...Blower, 12...Rotating shaft, 15...Power intake shaft, 16
...Transmission mechanism, 19...Adjustment bolt, 21...Universal joint, 22...Transmission shaft, 28...
...Vacuum seeding drum, 29...Flexible suction pipe.

Claims (1)

[Scope of utility model registration request] A mounting bracket that can be removably attached to a three-point link hitch of a tractor is fixed on the front end of the frame, and both sides of the support are set upright, and both sides of the mounting base are fitted to the both side supports and the adjustment bolt is attached to the mounting base. The blower is supported vertically adjustable by the mounting base, and the blower is fixed to the top of the mounting base.
The lower part rotatably supports a power intake shaft that connects a universal joint at one end to a universal joint at the other end of a telescoping power transmission shaft attached to the power output shaft of the tractor. and the rotating shaft of the blower are connected by a transmission mechanism, and a seeding body is connected to the rear of the frame, so that the inside of the vacuum seed drum mounted on the vacuum seeding drum of the seeding body and the intake port of the blower can be connected. A vacuum seeding machine connected by a flexible air suction pipe.