JPH044482Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is an agricultural working machine in which a rotary machine pulled by a tractor is equipped with a fertilizer applicator, a seeding machine, a soil disinfection machine, etc. The switch device is configured to automatically open and close the machine using the movement of the ground spring accompanying the lifting and lowering movements of the rotary machine, and its purpose is to enable the operator to operate the switch of the payout motor or pump motor when changing the direction of the tractor. The object of the present invention is to provide a switch device that does not require the above operations.

[Conventional technology and its problems]

Conventionally, in agricultural working machines in which a fertilizer applicator or seeding machine is connected to a rotary machine pulled by a tractor, the feed roll is driven from the rear axle of the tractor via a chain, or by a ground wheel with lugs via a chain. In the past, the feed roll was driven by a motor, but recently a direct current motor (feed out motor) equipped with a speed reducer has started to drive the feed roll directly. When changing the direction of movement of a tractor in such agricultural machinery, the operator operates the hydraulic equipment to pull up the rotary machine, and then turns the handle sharply to change the direction of the tractor. It is easy to forget how to turn the motor on and off, and if you forget to operate this switch, fertilizer and seeds will be fed out in vain.

Therefore, the present inventor developed a switch device (Utility Application No. 59-87947) suitable for motor-directly connected agricultural working machines. This prior art fixes a seat plate to the main beam of an agricultural working machine or a tool bar attached to the main beam, attaches a normally open limit switch connected to the electric circuit of the feed motor to this seat plate, and attaches an arm that pushes this switch. A continuous rod is pivotally attached to the lower edge of the leveling plate suspended from the cover of the rotary claw, and the continuous rod is inserted into the through hole of the arm to protrude upward and is placed over the continuous rod. The arm is pushed up by a spring, and when the rotary machine is in the working position, the arm pushes the limit switch using the connecting rod and spring, closing the electric circuit of the feed motor. When the rotary machine rises and the leveling plate hangs down, the arm separates from the limit switch. It is set as follows.

In the previous switch device, during fertilization and seeding work, the leveling plate pushed up the arm using a continuous rod and spring.
Even if the ground is uneven, the limit switch is always closed to feed out fertilizer and seeds, and when the rotary machine is raised when the tractor changes direction, the leveling plate hangs down and the arm is released from the limit switch, automatically feeding out fertilizer and seeds. Because it stops, you don't waste fertilizer and seeds. By the way, the height of tractors and rotary machines varies considerably depending on the manufacturer, and previous switch devices open and close the electric circuit of the feed motor using the movement of a leveling plate suspended from the cover of the rotary machine. Therefore, there is a problem that it can only be installed on certain models of tractors. The purpose of the present invention is to provide a switch device for agricultural working machines that can be attached to any type of tractor.

[Means for solving problems]

The present invention is an agricultural working machine in which a rotary machine pulled by a tractor is connected to a fertilizer applicator and/or a seeding machine or a soil disinfection machine, and each feed shaft or pump is directly driven by a motor. A switch box is fixed to the tool bar for the grounding member mounted on the frame, a normally open limit switch connected to the motor electric circuit is attached to the switch box, and an arm that pushes this switch is pivotally attached, and the arm is connected between the two pins. to regulate its swing range,
An elongated ground spring is attached to the arm in an adjustable manner, and its lower end is curved upward, so that when the rotary machine is in the working position, the ground spring reaches the ground, so that the arm always pushes the limit switch and closes the motor electrical circuit, and the rotary machine The design was set so that the arm would move away from the limit switch when the grounding spring sagged as the grounding spring rose.

In this invention, during fertilization seeding work or pesticide dispensing work, the curved end of the grounding spring moves while sliding on the ground, pushing up the arm and touching the limit switch, so that the limit switch is always activated even if the ground is uneven. When closed to feed out fertilizer and seeds or discharge pesticides, and when the rotary machine is raised when the tractor changes direction, the ground spring hangs down and turns off the limit switch, automatically stopping the discharge of fertilizers and seeds or pesticides. Fertilizer, seeds, or pesticides are not wasted, and the ground spring reduces the impact caused by uneven ground, so the limit switch and arm will not be damaged.The arm is passed between two regulating pins, so the limit switch cannot be pushed too far. The grounding spring does not hit the ground when the rotary machine descends, and the arm is attached to the toolbar for the grounding member.
Since a grounding spring was attached to this arm in an adjustable manner,
It can be installed on any type of tractor.

〔Example〕

An embodiment of the device of the present invention will be described based on the drawings.

In the agricultural working machine shown in FIG. 1, 1 is a tractor body, which is equipped with a large-diameter rear wheel 2 at the rear lower part,
The rear end of the fuselage has a three-point link consisting of two lower links 3 and one upper link 4. 5 is a rotary machine equipped with a rotary claw 6, a lower link 3 is connected within both sides of a front frame 7, and an oblique mast 9 fixed to a protrusion on the upper surface and a support 8 is connected to an upper link 4. The rotary machine 5 is then connected to the tractor body 1 via three-point links 3 and 4. In the rotary machine 5, a hinge 11 is attached to the rear end of a cover 10 that covers the upper half of the rotary claw 6, and a leveling plate 12 is suspended.
A chain (not shown) built in the chain case 13 is connected to the power take-off shaft 15 of the tractor via the universal joint 14, and the rotary claw 6 is driven by the power take-off shaft to plow up the ground, and then the leveling plate is used. 12 moves forward in a slightly diagonal position and uses its own weight and a spring (not shown) to level the ground with its lower edge.
When changing the course of the tractor, operate the hydraulic equipment (not shown) to raise the three-point links 3 and 4,
The rotary machine 5 is raised to release the rotary claw 6 from the ground.

Two main beams 16 are connected to the back of the rotary machine 5, and tool bars T are attached to the top ends of vertical rods 17 and 18 rising from the front and rear ends of the main beams, respectively.
1, T2 is mounted, and tool bars T3,
Mount T4. F is the fertilizer applicator, toolbar T1
The frame 20 is fixed in a cantilevered state and extended horizontally to the front side, a horizontally long hopper 22 is attached to the support piece 21 rising from the frame 20, and a feeding box 23 is connected to the two bottom openings, and each feeding box is A feeding shaft 24 that passes through the midsection of the housed impeller (not shown)
Two conduits 26 are branched from a funnel 25 placed over the bottom of the feeding box, and four conduits are attached to the front frame 7 of the rotary machine to discharge fertilizer to the front side of the rotary claw 6. Reference numeral 27 designates a feed-out motor of the fertilizer applicator, which uses a direct current motor with a speed reducer and directly drives the feed-out shaft 24 of the fertilizer applicator by applying a V-belt 28 to the pulley on the motor shaft and the pulley on the feed-out shaft.

S is a unit-type seeding machine, with a frame 30 fixed in a cantilevered state to the tool bar T2 and extending horizontally to the rear side, and supporting pieces 31 rising from the frame 30.
Attach the hopper 32 to the bottom opening of the feeder box 33.
A feed roll (not shown) stored in a feed box is attached to a feed shaft 34 passing through the midsection of the roll, and a conduit 36 connected to a funnel 35 placed over the bottom of the feed box is guided downward and behind the main beam 16. . Note that the delivery shafts 34 of several seeding machines are connected into one by a joint (not shown). Reference numeral 37 denotes a feed-out motor of the seed-seeding machine, which uses a direct current motor with a speed reducer and directly drives the feed-out shaft 34 of the seed-seeding machine by applying a V-belt 38 to the pulley on the motor shaft and the pulley on the feed-out shaft. Reference numeral 40 denotes a double-disk type trencher, in which two diagonal discs are freely rotatably supported at the lower end of a suspension rod 41, and grooves are cut in the ground by rotating the discs due to contact friction with the soil. In this groove cutting machine, a hanging rod 41 is connected to a square-shaped fastening metal fitting 43 via two links 42, and this metal fitting is placed over the tool bar T4 and fixed with a tightening bolt. 44
is a seed discharge pipe, which is attached to the metal fitting 45 on the back of the hanging rod, with its lower end peeking into the gap at the rear of the disc, and the conduit 36 connected to the seed dispensing box 33 is inserted into the upper opening of the discharge pipe 44. The seeds fed out from the hopper 32 are sown into the grooves cut by the furrower 40. 4
A pressure roller 6 is supported on an arm rod 47 attached to the tool bar T3, and moves behind the groove creator 40 to fill in the grooves where the seeds have been sown. The groove maker 40 and the pressure roller 46 are attached to the feeding box 33, and these members are placed on the tool bar T2 to T4 according to the desired number of threads.
Attach to. The feed-out motors 27 and 37 that directly drive the feed-out shaft 23 of the fertilizer applicator and the feed-out shaft 33 of the seeding machine are connected in parallel, and this parallel electrical circuit is connected to a single cap tire cord (not shown) coming from the tractor's battery (not shown). (without) and connect the rear wheel fender 48
Insert the main switch 49 attached to the cap tire cord. The above fertilizer application machine F and seeding machine S
is almost the same as the known one.

This invention is a rotary machine towed by a tractor.
The fertilizer applicator F and seeding machine S are connected to each other, and the respective feed shafts 23 and 33 are connected to the feed motors 27 and 37.
This invention relates to a switch device in an agricultural working machine that is directly driven by a switch.

As shown in FIGS. 1 to 3, the embodiment of the device of the present invention is such that a U-shaped metal fitting 50 to which bolts 51, 51 are welded is placed over the center of the tool bar T4 from behind, and rectangular receiving pieces are attached to the bolts 51, 51. 52 and fix the metal fitting 50 to the tool bar T4 with a nut 53, and attach a normally open limit switch 55 diagonally to a switch box 54 vertically welded to the back of this metal fitting, and make the lever 56 face forward and downward. , insert the electric circuit 57 of the limit switch into the parallel electric circuit of the feeding motors 27 and 37. Reference numeral 60 denotes an elongated arm, which is pivotally connected to the switch box 54 by a pin 61 and has two pins 58,
59 and extends rearward and downward to face the trochanter of the switch lever 56, and its swing range is restricted by pins 58 and 59 to prevent the arm 60 from moving too much. Reference numeral 62 designates an elongated ground spring that is attached to the arm 60. The lower end 63 is curved upward to reach the ground, and a flat metal fitting 64 is placed over the arm 60 and adjustable with a thumbscrew 65. Drill several holes 66 and insert a thumbscrew 6 into one of them.
5 to adjust the effective length of the grounding spring 62. Here, the rotary machine 5 is in the working position,
When the trencher 40 digs into the ground and moves forward, the curved end 63 of the ground spring moves forward while rubbing against the ground A, causing the arm 60 to come into contact with the lever 56 of the limit switch. The limit switch 55 is always closed, and when the rotary machine 5 is lifted and the grounding spring 62 hangs down as shown in FIG. 3, the arm 60 is set away from the switch lever 56 and the limit switch 55 is opened.

An embodiment of the present invention and an agricultural working machine equipped with the same have the above-mentioned configuration. When an operator rides on a tractor and pushes the operating lever forward, the hydraulic equipment (both not shown) lowers the three-point links 3 and 4. , rotary machine 5
descends and bites the rotary claw 6 into the ground, and then the tractor moves forward using the rear wheels 2 as driving wheels,
The rotary claw 6 is driven by a power take-off shaft 15 to plow up the ground, and the leveling plate 12 advances in a slightly oblique position after that to level the ground with its lower edge.
At the same time, the operator presses the main switch 49 on the fender to energize the feeding motors 27 and 37, which rotate the feeding shafts 24 and 34 respectively to feed out fertilizer and seeds. The seeds are guided to the front side of the furrow machine 6 and discharged onto the ground, and the seeds are led to the rear of the furrower 40 by the conduit 36 and are sown into the furrows, and immediately after that, the pressure roller 45 advances to clean the sown furrows. Fill it up. During this fertilization and seeding work, as shown in FIG. 2, the curved end 63 of the ground spring advances while sliding against the ground A, pushing up the arm 60 and bringing it into contact with the switch lever 56, even if the ground is uneven. Arm 60 always closes limit switch 55.

When the tractor changes its direction of travel or runs on the road, pull the operating lever backwards, raise the three-point links 3 and 4 using hydraulic equipment, and move the rotary machine 5.
is raised to release the rotary claw 6 from the ground. When the rotary machine rises, the groove maker 40 is also lifted, so the grounding spring 62 hangs down away from the ground A as shown in FIG. The motors 27 and 37 are stopped, and the feeding of fertilizer and seeds is automatically stopped. When the operator lowers the rotary machine 5 using hydraulic equipment after the tractor has finished changing direction, the trencher 40 digs into the ground and brings the curved end 63 of the grounding spring into contact with the ground A, and the grounding spring 62 lowers the arm 60. is pushed up to close the limit switch 55, and the feeding of fertilizer and seeds is automatically restarted.

When changing the direction of the tractor, the operator must operate the hydraulic equipment that raises and lowers the rotary machine 5 and the handle, so he often forgets to turn off the main switch 49 of the feed motor. He was throwing out seeds uselessly.
In this embodiment, when the rotary machine is raised when the tractor changes direction, the limit switch 55 opens due to the movement of the ground spring 62, automatically stopping the delivery of fertilizer and seeds, and when the rotary machine descends, the delivery of fertilizer and seeds is stopped. It will restart automatically,
Fertilizer and seeds are not discharged in vain, and there is no need to forget to feed them.

In this embodiment, a grounding spring 62 is attached to the arm 60.
The curved end 63 is brought into contact with the ground, and the ground spring absorbs the impact caused by the unevenness of the ground and transmits it to the arm 60, so the limit switch 55
or the arm 60 is not damaged. In this embodiment, arm 6
0 is passed between pins 58 and 59, and pin 59
This prevents the arm from pushing the switch lever 56 too much and prevents the limit switch 55 from being damaged. Also, when the rotary machine 5 is lifted, the pin 58
receives the arm 60 and tilts the ground spring 62 backward, so when the rotary machine 5 descends, the ground spring 62 does not hit the ground, and its curved end 6
3 on the ground smoothly to prevent damage to the arm 60 and the grounding spring 62.

In this embodiment, a switch box 50 is fixed to a tool bar T4 that suspends the groove cutter 40, and a limit switch 55 and an arm 60 are attached to this switch box. The heights are the same, and even if there is some difference in height, the effective length of the grounding spring 62 attached to the arm 60 can be adjusted, so this embodiment can be applied to any type of tractor. It's nice to be able to wear it.

The above is an explanation of one embodiment of the present invention, and the present invention is not limited to this embodiment, and the design can be changed within the gist of the invention. For example, the lever type limit switch 55 may be replaced with a pin tamper type one. Good too. Moreover, the present invention can be directly applied to a soil disinfection machine.

In this invention, during fertilization seeding work or pesticide dispensing work, the curved end of the ground contact spring slides against the ground, pushing up the arm and bringing it into contact with the limit switch, so that the limit switch is always activated even when the ground is uneven. When the rotary machine is raised when the tractor is closed to feed out fertilizer and seeds or to discharge pesticides, the ground spring hangs down and automatically stops feeding out fertilizer and seeds or to discharge pesticides. Seeds or pesticides are not wasted, the ground spring reduces the impact caused by uneven ground, so the limit switch and arm are not damaged, and the arm is passed between two regulating pins, so the limit switch is not pushed too hard, and the rotary machine The grounding spring does not hit the ground when descending, and the limit switch and arm are attached to the toolbar for the grounding member.
This toolbar has almost the same height on all models, and has an adjustable grounding spring attached to the arm.
It has the effect of being able to be installed on any type of tractor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a motor-directly coupled agricultural working machine equipped with the embodiment, Fig. 2 is an enlarged side view of the embodiment, and Fig. 3 is a grounding spring attached to the ground. FIG. 3 is an enlarged side view of the embodiment in a state where it is separated from the camera. Note that 1 is the tractor body, 5 is the rotary machine,
16 is the main beam, F is the fertilizer applicator, 24 is its delivery shaft, S is the seeding machine, 34 is its delivery shaft, 27 and 37
is the motor, 40 is the grounding member, T4 is the toolbar,
A is the ground, 54 is a switch box, 55 is a limit switch, 60 is an arm, 62 is a grounding spring, and 63 is its curved end.

Claims (1)

[Scope of utility model registration request] Agricultural working equipment in which a fertilizer application machine and/or a seeding machine or a soil disinfection machine are connected to a rotary machine towed by a tractor, and the respective feed shafts or pumps are directly driven by motors. Fix a switch box to the toolbar for the grounding member, attach a normally open limit switch connected to the motor electrical circuit to this switch box, and pivotally attach an arm that pushes this switch. Pass the arm between the two pins. To restrict its swing range, an elongated ground spring is attached to the arm in an adjustable manner, and its lower end is curved upward, so that when the rotary machine is in the working position, the ground spring reaches the ground, so that the arm always activates the limit switch. A switch device for an agricultural working machine, characterized in that the arm is set to move away from the limit switch when the rotary machine moves up and the ground spring hangs down when the motor electric circuit is pushed and the motor electric circuit is closed.