JPH0132485Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spring harrow with a crushing rotary member, which has two crushing rotary members that further crush the soil crushed by the spring blades.

Conventionally, this type of spring harrow with a crushing rotary member has two pieces, a front crushing rotary member and a rear crushing rotary member, which are installed horizontally in parallel and freely rotatable, and the front crushing rotary member and the rear crushing rotary member are attached to each other so as to be freely rotatable. It was formed so that it could oscillate up and down in one piece.

For this reason, when the rotary crushing member is connected to a tractor and towed to crush the soil and level the planting bed, the crushing rotating member may float up from the ground surface on uneven parts of the field, making it impossible to achieve the intended purpose.

In view of the above-mentioned circumstances, the present invention is designed so that even if there are uneven parts in the field, the rear crushing rotating member can always rotate on the ground surface by rotating the front crushing rotating member. A left rod portion and a right rod portion are provided that protrude rearward from the rear of the harrow body to which a large number of rods are attached. A pre-crushing rotating member is provided that is movably supported, and one end of the support member is rotatably attached to a support shaft protruding from each of the support pieces, and the shaft portions at both ends are rotatably supported at the other end of each support member. After that, a crushing rotating member is provided, and the tip of a support rod whose base is fixed to the left and right rods protruding rearward from the rear of the harrow body is fixed to the support shaft, and the rotation shaft is attached to this support rod. The base end is rotatably attached, and a chain is hung between a gear fixed to the rotating shaft and a gear fixed to the protruding end of the shaft of the rear crushing rotating member, and another gear fixed to the rotating shaft and the A chain is attached to a gear fixed to the protruding end of the shaft of the front crushing rotary member, and the rotation of the front crushing rotary member drives the rear crushing rotary member, and the rear crushing rotary member is moved up and down freely relative to the front crushing rotary member. A spring harrow with a freely movable crushing rotating member.

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

As shown in FIGS. 1 and 2, the spring harrow with a crushing rotary member 1 according to the present invention has a front crushing rotary member 3 and a rear crushing rotary member 4 attached to the rear part of a harrow body 2.

The harrow main body 2 includes horizontal rod portions 6, 6, of the underframe 5.
The upper ends of a plurality of spring blades 7, 7... made of spring steel bent into an S-shape when viewed from the side are attached to 6, 6, respectively, and these spring blades 7, 7......
It is formed to perform a soil crushing action.

Next, a left rod portion 8 and a right rod portion 9 are provided to protrude rearward from the rear portion of the underframe 5 of the harrow body 2, and branch portions 10 are provided near the base ends of these left rod portions 8 and right rod portions 9, respectively.
are vertically arranged, and shaft portions 11 at both ends of the pre-crushing rotary member 3 are rotatably attached to these branch portions 10, 10.

Next, a support shaft 12 that protrudes laterally is provided on the support pieces 10, 10, and a left support rod 1 whose base is fixed to the left rod portion 8 and the right rod portion 9 that protrude rearward from the rear part of the underframe 5 is provided.
3. The tip of the right support rod 14 is fixed to the end of the support shaft 12, and the portion of the support shaft 12 between the support piece 10 and the left support rod 13 and between the support piece 10 and the right support rod 14 are fixed. Support shaft 1
A left support member 15 and a right support member 16 each having a plate shape and having one end rotatably attached to each of the two parts are provided so as to extend rearward.

Furthermore, these left support member 15, right support member 1
A rear crushing rotating member 4 is provided at the other end of the chain 17 with both ends rotatably supported, and a required length of a chain 17 whose upper end is fixed to the tips of the left rod portion 8 and the right rod portion 9, respectively, is provided with a corresponding left support. The member 15 is engaged with a retaining ring 18 fixed near the other end of the right support member 16, and the left support member 1
5. The rear crushing rotary member 4 is rotatable via the right support member 16 and is freely movable up and down within a predetermined range using the support shaft 12 as a fulcrum.

The left support rod 13 has a rotation shaft 19 that projects laterally.
The base end of the rotary shaft 1 is rotatably attached.
9 has gears 20 and 21 fixed thereto.

Further, a gear 22 is fixed to the protruding end of one shaft part 11 of the front crushing rotary member 3, and a gear 24 is fixed to the protruding end of one shaft part 23 of the rear crushing rotary member 4,
A chain 25 is attached to the gear 20 and the gear 24, and a chain 26 is attached to the gear 21 and the gear 22.

The front crushing rotation member and the rear crushing rotation member shown in this example have diagonal square rods arranged in the circumferential direction to form a roll-shaped cage, but there are also roll-shaped cage-shaped members with teeth.

In the figure, reference numeral 27 is a connecting portion to a tractor.

Since the present invention is configured as described above, when the spring harrow 1 is connected to a tractor (not shown) via the connecting part 27 and is towed in the direction of arrow a, the soil is crushed by the spring blades 7, 7... It is immediately crushed by the rotation of the pre-crushing rotary member 3, and further crushed and finely powdered by the rotation of the post-crushing rotary member 4, which is driven in conjunction with the rotation of the pre-crushing rotary member 3. It is possible to form a good planting bed.

That is, the rotation of the pre-crushing rotating member 3 is caused by the rotating shaft 1 via the shaft portion 11, gear 22, chain 26, and gear 21.
Rotate gear 9, gear 20, chain 25, gear 24
The rear crushing rotating member 4 is rotated by the shaft portion 23 via the shaft portion 23 . In this example, the rotation ratio of the front crushing rotary member and the rear crushing rotary member is set to 1:2.

Moreover, even if the field surface has uneven parts as shown in FIGS. 4 and 5, the rear crushing rotary member 4 is independent of the front crushing rotary member 3 and uses the support shaft 12 as a fulcrum. Since it is designed to be able to move up and down freely, when the front crushing rotary member 3 hits the convex portion as shown in FIG. When the pre-crushing rotary member 3 fits into the ground surface A and hits the recess as shown in Fig. 5, the chain 17 is shortened,
The back crushing rotary member 4 is moved upward using the support shaft 12 as a fulcrum to adapt it to the ground surface, so that even if the ground surface of the field is uneven, the back crushing rotary member 4 never floats up.

The present invention allows the rear crushing rotary member to freely move up and down separately from the front crushing rotary member, and also allows the rear crushing rotary member to be actively driven by the rotation of the front crushing rotary member. Not only does it not float up even when there are uneven parts on the ground, but both the front crushing rotary member and the rear crushing rotary member can be rotated at any time, which greatly improves the efficiency of forming planting beds, etc. , and the crushing work can be completed completely.

[Brief explanation of the drawing]

FIG. 1 is a side view of the spring harrow with a crushing rotating member according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an enlarged perspective view of the main part, and FIGS. 4 and 5 are explanatory diagrams of the operating state. 1...Spring harrow with the crushing rotating member of the present invention, 2...Harrow main body, 3...Front crushing rotating member,
4... Rear crushing rotating member, 5... Underframe, 7... Spring blade, 8... Left rod portion, 9... Right rod portion, 10...
... Support piece, 12 ... Support shaft, 13 ... Left support rod, 14
... Right support rod, 15 ... Left support member, 16 ... Right support member, 20, 21, 22, 24 ... Gear, 2
5, 26...Chain, 27...Connection part.

Claims (1)

[Scope of utility model registration request] A left rod portion and a right rod portion are provided that protrude rearward from the rear of the harrow body, which has a large number of spring blades attached.
A front crushing rotating member rotatably supporting the shaft portions at both ends is provided on the branch portions vertically provided near the base ends of the left and right rod portions, and supports protruding from each of the branch portions are provided. One end of the support member is rotatably attached to the shaft, and a crushing rotary member is provided at the other end of the support member, which rotatably supports the shaft portions at both ends. The tip of a support rod whose base is fixed to the rod portion is fixed to the support shaft, the base end of a rotating shaft is rotatably attached to the support rod, and the gear fixed to the rotation shaft and the rear crushing rotating member are connected to each other. A chain is hung around a gear fixed to the protruding end of the shaft, and a chain is hung around another gear fixed to the rotating shaft and a gear fixed to the protruding end of the shaft of the pre-crushing rotating member. A spring harrow with a crushing rotating member in which the rear crushing rotating member is driven by the rotation of the rotating member, and the rear crushing rotating member can freely move up and down with respect to the front crushing rotating member.