JP4597215B2 - Deep plowing device for seeder - Google Patents

Description

  The present invention relates to a deep plowing device that is attached to the front part of a sowing machine such as a potato towed by a tractor or the like and swells and softens the soil between the furrows.

A sowing machine for planting potatoes, etc. on the field while being pulled by a tractor, etc., deeply cultivates the space between the cocoons by spreading the soil between the cocoons on the front horizontal bar at the front part of the sowing machine body equipped with a seed potato tank and a fertilizer tank. A plurality of deep plowing devices to be softened are installed corresponding to the furrows.
As shown in FIG. 7, the sowing machine configured as described above connects the front horizontal bar 5 of the seeding machine 1 to the hitch 7 that extends rearward of the towing vehicle A such as a tractor, and faces upward of the front horizontal bar 5. A driving device such as a hydraulic cylinder 9 pivotally supported on the rear part of the traction machine is connected to the fixed support frame 10, and when not working, the entire seeder 1 equipped with the deep plowing device 6 is lifted upward, while the seeding is performed. At the time of the work, the seeder 1 is lowered and the tip side of the deep plowing device is pushed into the soil while moving forward to carry out the deep plowing work.

This type of sowing machine 1 is required to work by lowering the sowing machine to the lowest possible position, preferably to the tire ground contact position, in order to put the contents into the seed tank or fertilizer tank.
However, in the conventional seeder 1, since the deep plowing device 6 extending downward from the front horizontal bar 5 is fixed as an integral member, the tip of the deep plowing device 6 is lowered when the seeder 1 is lowered. There was an inconvenience that it could not be lowered to a predetermined lower position because it hit the ground and interfered.
In particular, the introduction of seed pods and the like is often performed on a hard ground outside the field as a preparatory work, and thus the deep plowing device may be damaged.

  Accordingly, a first object of the present invention is to provide a deep plowing apparatus for a seeder that does not interfere with the downward movement when the seeder is lowered.

  The second object of the present invention is that when an excessive soil resistance of a predetermined value or more is applied to the deep plowing device during the progress work accompanying sowing, the locking action of the locking pin for maintaining the deep plowing posture is achieved. It is to provide the deep plowing device having a structure to be released.

In order to achieve the first and second objects described above, a deep plowing apparatus for a seeding machine according to the present invention includes a base frame attached to a front horizontal bar of a towed seeder and a lower end extending downward from the base frame. A support frame having a shaft attachment portion on the side, and a deep tillage claw body connected to the front lower side of the support frame, and a bearing hole formed in an upper portion of the deep tillage claw body has a bearing portion of the support frame in conjunction swingably journalled, and an upper shaft receiving hole of cultivating claw body, said between bottom bracket mutual support frame, rear round of cultivating claw body is inclined at a predetermined downward angle to the front from the support frame be provided with a locking mechanism for restricting the movement, the locking mechanism includes a locking pin provided on the upper portion of the pin holes than said shaft receiving hole of said cultivating claws body, the rear edge of the lower bracket of the support frame Deep plow body provided The safety bolt comprises an engaging portion to which the locking pin is locked, and the locking pin is broken and released when a resistance in the soil exceeding a predetermined value is applied to the deep plow body. It is characterized by that.

The locking mechanism for restricting the rearward turning of the cultivating claw body is attached to the locking pin to the shaft attaching portion upper portion of the lower bracket of the support frame, the locking of the lower bracket an upper front edge of the cultivating claw body You may make it the structure made to latch on a pin.

  The present invention, when lowering the seeding machine downward, when the tip of the deep tillage nail inclined downward toward the front comes into contact with the ground, the deep tillage nail main body uses the shaft support part as a fulcrum by pressing force from above, During deep plowing work, it turns freely and folds in the direction opposite to the direction of receiving resistance in the soil, and it does not interfere with the descent of the seeder. On the other hand, when the sowing machine is lifted upward, the deep plow main body rotates to the forward downward inclined position by its own weight with the shaft support portion as a fulcrum, and the locking pin provided above the shaft support portion is locked to the engagement portion of the support frame. To do. In this state, when the sowing machine is lowered and moved forward, the deep plowing nests in the soil and the deep plowing work is performed.

  During deep plowing work, if the deep plow main body collides with a solid foreign object in the soil and receives a resistance greater than a predetermined level that damages the deep plow, the deep plow main body or its peripheral members, the locking pin of the deep plow main body Is disengaged from the support frame due to breakage or the like. As a result, an excessive load on the deep plow main body is blocked in advance, and damage is prevented.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an example of a seeder 1 such as a potato equipped with a deep plowing device 6 according to the present invention. The seeder 1 has a seed tank 4a and a fertilizer tank 4b mounted on a chassis 3 having traveling wheels 2, and a front side made of a hollow square material, preferably made of steel, parallel to the front of the chassis 3 in parallel. A bar 5 is connected, and a plurality of, preferably steel deep-plowing devices 6 according to the present invention are mounted on the front horizontal bar 5 in correspondence with the ridges.
The front horizontal bar 5 and the front frame 3 ′ of the chassis 3 are fixedly provided with a mounting bracket 8 for connecting the traction hitch 7 of the tractor A (see FIG. 7), and the seeding machine 1. A support frame 10 for connecting a hydraulic cylinder 9 that rotates in the vertical direction is coupled.

  As shown in FIGS. 2 to 4, the deep plowing device 6 of the present invention has a base frame 11 attached to the front horizontal bar 5, and extends downward from the base frame 11, and has a shaft mounting portion 12 on the lower end side. A support frame 13 and a deep plow main body 14 that is pivotably coupled downward are provided on the support portion 13 of the support frame 13.

  The deep-plowing device 6 is used for the purpose of swelling and softening by digging up the soil between the ridges to promote drainage, and promoting the germination and growth of crops due to the rise in soil temperature, but the ridge interval is not necessarily It is not constant. For this reason, the base frame 11 is formed by integrally connecting a bracket 16 below a base material 15 made of hollow square material slidably fitted to the front horizontal bar 5 made of square material, and slidably fitted to the base frame 11. The base material 15 is detachably fixed to a predetermined position of the front horizontal bar 5 with a stopper 17 such as a bolt.

  The support frame 13 has a configuration in which an upper shaft body 18 coupled to the lower side of the base frame 11 and a lower bracket 19 that forms the shaft attachment portion 12 are integrally formed.

  The deep plow main body 14 has a leg portion 14b integrally coupled with the deep plow claw 14a at the tip, and a shaft formed on the lower bracket 19 of the support frame 13 at an upper position spaced downward from the upper end of the leg portion 14b. A bearing hole 20 corresponding to the mounting portion 12 is provided, and the shaft mounting portion 12 of the support frame 13 has a shaft mounting portion 12 in which the bearing hole 20 of the deep tillage claw body 14 can be pivoted by a bolt 21a, a collar 21b, a washer 21c, a nut 21d and the like. It is.

Between the members of the deep tillage nail body 14 and the support frame 13, the deep tillage nail body 14 is held at a downward inclined position by a predetermined angle toward the front of the support frame 13 , and the backward rotation of the deep tillage nail body 14 is restricted. A locking mechanism is provided.
In the illustrated embodiment, a locking pin 23 having a predetermined breaking strength is engaged with a pin hole 22 formed between the upper end of the deep plow body 14 and the bearing hole 20 with a bolt 24, and the lower bracket 19 of the support frame 13. On the rear edge, a concave engagement portion 25 is formed to which the locking pin 23 of the deep tillage nail body 14 is locked, and the concave surface formed on the locking pin 23 of the deep tillage nail body 14 and the lower bracket 19 of the support frame 13. A locking mechanism is configured by the engagement of the engaging portion 25.
However, the structure of the locking mechanism is not limited to this, and a locking pin is attached to the lower bracket 19 so that the upper front edge of the deep plow body is locked to the locking pin of the lower bracket 19. Good.

  Preferably, the locking pin 23 of the locking mechanism is broken when the deep plow body 14 is subjected to excessive soil resistance exceeding the shear stress due to obstacles in the soil during the deep plowing operation, as shown in FIG. In addition, the locking mechanism is released so that the deep plow body 14 rotates freely rearward. With this structure, more important members of the deep plowing device 6 are prevented from being damaged by excessive resistance. Of course, the shear stress of the locking pin 23 is appropriately set according to the strength of the members constituting the deep plowing device 6.

  In the illustrated embodiment, in order to stably support the deep plow body 14 in a predetermined posture on the support frame 13, a receiving portion 26 that receives the distal end side of the deep plow body 14 is formed on the side surface of the support frame 13. The deep plow body 14 is pressed against the support frame 13 with bolts 28 screwed into the bolt holes 27 so as to eliminate backlash.

  The bracket 16 of the base frame 11 and the support frame 13 are joined by integrally forming a bracket 30 for supporting the bolt 29 so as to be able to advance and retreat in the bracket 16 and along the vertical direction of the upper shaft body 18 of the support frame 13. By forming a plurality of bolt holes 31 (see FIG. 3) to which the bolts 29 are engaged and moving the upper shaft body 18 up and down and fixing it, the leg foot length of the deep plowing device 6 can be adjusted. I have to.

Next, the operation of the present invention will be described.
When the seeding machine 1 that has stopped traveling is lowered from the state of FIGS. 3 and 7 and the tip of the deep plow main body 14 comes into contact with the ground, as shown in FIGS. The main body 14 is folded forward through a pivotal attachment portion with the support frame 13, and the seeder 1 descends without being interfered with the deep plow main body 14 so that seed potatoes, fertilizers and the like can be loaded at a desired lower position. Become. When the sowing machine 1 is lifted after loading, the deep plow body 14 returns to the engagement position shown in FIG. 3 due to the weight of the legs 14b. Therefore, when the sowing machine 1 is moved forward, the deep plow body 14 is submerged in the soil. Deep plowing work is carried out.
On the other hand, when the deep plow main body 14 during the deep plowing operation collides with an obstacle in the soil and the resistance force becomes excessive, the locking pin of the deep plow main body 14 that is locked to the concave engagement portion 25 of the support frame 13. 23 breaks and is released free to rotate backward, and is not subjected to an excessive load.

  The deep plowing device of the present invention can be used with an impact absorbing function by attaching to a power sowing machine towed by a tractor or the like, thereby eliminating interference when loading seed pods and the like.

The perspective view of the seeder equipped with the deep plowing device of the present invention 1 is an exploded view of a deep plowing apparatus according to an embodiment of the present invention. Fig. 2 Example of deep plowing device assembly Advance side enlarged view of FIG. FIG. 3 is an explanatory diagram of the operation of the deep plowing apparatus according to the embodiment. FIG. 3 is an explanatory diagram of the operation of the deep plowing apparatus according to the embodiment. Operation explanatory diagram of sowing machine equipped with deep plowing device Action explanatory diagram of the sowing machine equipped with the deep plowing device of the present invention

Explanation of symbols

A ... Tractor 1 ... Seeder 2 ... Wheel 3 ... Chassis 3 '... Front frame 4a ... Seed tank 4b ... Fertilizer tank 5 ... Front horizontal bar 6 ... Deep plow 7 ... Traction hitch 8 ... Mounting bracket 9 ... Hydraulic cylinder 10 ... Prop frame 11 ... Base frame 12 ... Axis mounting part 13 ... Support frame 14 ... Deep plow nail body 14a ... Deep plow nail 14b ... Leg part 15 ... Base material 16 ... Bracket 17 ... Fastener 18 ... Upper shaft body 19 ... Lower bracket 20 ... Bearing hole 21a ... Bolt 21b ... Collar 21c ... Washer 21d ... Nut 22 ... Pin hole 23 ... Locking pin 24 ... Bolt 25 ... Concave surface 26 ... Receiving part 27 ... Bolt hole 28 ... Bolt 29 ... Bolt 30 ... Bracket 31 ... Bolt hole

Claims (2)

A base frame (11) mounted on the front horizontal bar (5) of the towed seeder, and a support frame (13) extending downward from the base frame (11) and having a shaft attachment portion (12) on the lower end side And a deep tilling nail body (14) coupled to the front lower side of the support frame (13), and a bearing hole (20) formed in an upper portion of the deep tilling nail body (14) has the support frame (13 together swingably supported by a shaft attachment portion (12) of) the upper portion of the shaft receiving hole of cultivating claw body (14) (20), bottom bracket (19) between each other of the supporting frame (13) A locking mechanism for restricting the rearward rotation of the deep tilling nail body (14) tilted forward from the support frame (13) at a predetermined downward angle, the locking mechanism being a deep tilling nail body (14) than the shaft receiving hole (20) and locking pin (23) provided on the upper portion of the pin hole (22), provided at a rear portion edge of the lower bracket (19) of the support frame (13), the cultivating claw Said engagement of the body (14) The locking pin (23) consists of an engaging portion (25) that is locked, and the locking pin (23) breaks when a soil resistance exceeding a predetermined value is applied to the deep plow body (14). Deep plowing device for seeder characterized by being a safety bolt disengaged A base frame (11) mounted on the front horizontal bar (5) of the towed seeder, and a support frame (13) extending downward from the base frame (11) and having a shaft attachment portion (12) on the lower end side And a deep tilling nail body (14) coupled to the front lower side of the support frame (13), and a bearing hole (20) formed in an upper portion of the deep tilling nail body (14) has the support frame (13 together swingably supported by a shaft attachment portion (12) of) the upper portion of the shaft receiving hole of cultivating claw body (14) (20), bottom bracket (19) between each other of the supporting frame (13) A locking mechanism for restricting rearward rotation of the deep plow body (14) tilted forward from the support frame (13) at a predetermined downward angle, and the locking mechanism is configured to support the support frame (13). a locking pin attached to the shaft attachment portion (12) upper part of the lower bracket (19) of, consist upper front edge of the cultivating claw body which engages with the locking pin (14), the locking pin cultivating Body (14) in the sowing machine cultivating apparatus characterized by engagement cutaway and soil resistance is a load exceeding a predetermined value is safe bolt is released

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