JPH0436567Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention relates to a frame structure in a dual-type tilling device that is constructed by detachably connecting a second tilling device to the rear of a first tilling device.

(b) Conventional technology When plowing a field for sowing various crops or transplanting seedlings, it is best to till the surface of the field so that the soil becomes fine and the soil becomes coarser towards the bottom, which will improve the growth of the crops. It will be convenient.

Therefore, behind the first tillage device that can roughly till the field to a predetermined depth, we installed a second tillage device that thins the surface layer of the soil cultivated by the first tillage device, which is convenient for crop growth. A double tillage device is used that can perform different tillage operations all at once.

By the way, it is advantageous for a dual-type tilling device to be configured so that the second tilling device can be attached and used only when necessary, as it increases versatility and allows rough-raising work to be carried out using only the first tilling device. Therefore, generally the first tilling device and the second tilling device are formed separately, and consist of a latching pin installed on the first tilling device side frame and a hook installed on the second tilling device frame. Both devices are brought into alignment with a predetermined state using a hooking mechanism, and then the frames of both devices are fixedly connected and integrated using a fixing mechanism such as a fastener. In a similar type, when the hooks provided at two locations in the width direction of the second tillage device frame are attached to the frame so as to be swingable in the back and forth direction, both hooks are configured so that they can swing back and forth in unison. The mounting base is covered with an elastic membrane-like material that is stretched in contact with the mounting base to prevent the adhesion of dirt and sand.

(c) Problems to be solved by the invention In the conventional device having the above-mentioned structure, both hooks installed at two locations in the width direction of the second tillage device frame are integrated, so the second tillage device is attached to the first tillage device. When connecting to the tilling device side, unless you adjust the position so that both hooks are as parallel as possible to the axis of the locking pin on the first tilling device side, both hooks will not work properly. Since it does not engage with the latching pin side, there is a drawback that it takes time and effort to connect.

In addition, since the elastic film-like body for preventing dirt from adhering to the hook's mounting base is stretched in contact with the mounting base, the pressing force applied by the elastic film-like body is applied to the front and back of the hook. This results in resistance to rocking, and there is a problem in that it is difficult to make the fine rocking required when engaging the hook with the locking pin, making it even more difficult to align the engagement position. Since the elastic membrane is in contact with the member, if stones are thrown up during plowing work, the elastic membrane at the contact point will be easily torn by the stone, resulting in poor durability. In addition, since the vibration of the elastic membrane is reduced by contact with the hook mounting base, there have been various problems such as a reduction in the ability of the elastic membrane to prevent soil adhesion.

(d) Means for solving the problems The present invention solves the various problems mentioned above.The present invention is to solve the various problems mentioned above. A main beam parallel to the tilling axis is arranged obliquely above and outward in front of the rotary locus of the tip of the tilling claw on the second tilling axis, and a side plate and a ceiling cover are attached to the main beam as a frame. The bases of a plurality of hooks are attached to the main beam at predetermined intervals in the lateral direction so that each hook can slide independently in the front and back direction, and the lower part of the main beam on the lower side of the ceiling cover It is constructed by covering it with an elastic plate that is attached slackly so as to leave a gap so as not to cause any trouble.

(e) Effect In the present invention configured as described above, when the second tilling device is connected to the first tilling device, the second tilling device frame is kept parallel to the first tilling device side. Even if the hooks are not used, the hooks can be individually swung back and forth, so they can be individually engaged with the locking pins on the first tillage device, and eventually the frames of both devices will be in the desired mating state. Therefore, the accuracy of adjusting the second tiller to match the first tiller while maintaining parallelism is relaxed, and the joining operation becomes easier. In addition, during such joining work,
Since the individual hooks are not subject to any rotational resistance due to the elastic plate, they can be smoothly swung back and forth, and the engagement with the latching pin becomes good, making connection even easier. Furthermore, the elastic plate is sagging to create a gap between the hook mounting base and other parts, so even if a stone collides with it during plowing, the gap will absorb the impact shock and the elastic plate will This reduces breakage, and the presence of gaps allows the elastic plate itself to vibrate sufficiently to fully exhibit its ability to prevent dirt from adhering.

(F) Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The dual tilling device is configured such that the second tilling device 1 can be detachably connected to the rear of the first tilling device 2.

The first tilling device 2 connects the left and right side plates 3, 3 with a main beam 4 extending horizontally, and connects the upper parts of both side plates 3, 3 with a ceiling cover 5. A device frame is formed, and a horizontally lateral first tilling shaft 6 is arranged in a space surrounded by the frame, and the first tilling shaft 6 is supported by a side drive type transmission case 7. They are connected so that they are forced to rotate, and a large number of large-diameter tilling claws 9 are disposed on the outer periphery so that the tip rotation locus 8 rotates down-cut.

A gear box 10 that receives power from the PTO shaft of the tractor is provided at the center in the longitudinal direction of the main beam 4, and a drive shaft 11 extending laterally from the gear box is connected to the input section of the transmission case 7. It is linked to. The first tilling device frame is provided with a connecting portion 12 that connects to a three-point hitch on the tractor body. A rear frame 14 is provided that can change and adjust the relative angle between it and the device frame.

The second tillage device 1 has the left and right side plates 15, 15 connected by a main beam 16, and the upper part of the side putts connected by a ceiling cover 17 to form a second tillage device frame. This is similar to the case of the first tilling device described above in that the second tilling shaft 18 is disposed horizontally in a space surrounded by The tilling claws 19 to be planted are installed as tilling claws with a tip rotation locus 20 having an appropriately smaller diameter than the tilling claws of the first tilling device, and are installed as tilling claws with a tip rotation locus 20 that is smaller in diameter than the tilling claws of the first tilling device that rotates downcut. The tilling claw 19 of the tilling device is configured to be able to operatively connect the second tilling shaft 18 to the drive shaft 11 via a transmission section 21 which can be bent and expanded/contracted so as to rotate upright.

The main beam 16 of the second tilling device is disposed on the lower side of the ceiling cover 17 diagonally upward and outward in front of the rotation locus 20 of the tip of the tilling claw.

Further, a rear cover 22 is attached to the rear end of the second tillage device frame so as to be able to swing up and down, and this and the rear frame 14 are connected by a hanger rod 23, and the rear cover is opened by the operation of the hanger rod 23. It is configured to automatically move up and down within a predetermined range, and furthermore, a rake 24 is provided vertically between the rear cover and the tilling claw tip rotation locus 20.

The first tilling device 2 and the second tilling device 1 having the above-mentioned configurations are combined and connected as necessary to form a double-type tilling device. First, both tilling device frames are brought into alignment with a predetermined state by the engaging mechanism 25 installed correspondingly to the two tilling device frames, and then the fixing mechanism is installed across both tilling device frames. Both cultivating device frames are connected and fixed together at 26 and 27, and the transmission section 21 to the second tilling shaft 18 is connected to the drive shaft 11.

The engaging mechanism 25 is connected to the second tillage device 1.
At approximately the center of gravity in the left and right direction, 2 at regular intervals.
The plate-shaped hooks 28, 28 are attached to the main beam 16 so that the individual hooks 28, 28 can independently swing back and forth within a predetermined range, and their free ends protrude above the ceiling cover 17. Each protruding portion is provided with an engaging groove that opens forward, and a tension spring 29 is provided between the mounting base of each hook and a fixing member such as a ceiling cover to bias the hook forward. , 29 are hung. On the other hand, the first tilling device 2 has the aforementioned hooks 28, 2.
A pin 30 is installed in the width direction of the device so as to engage with the pin 8 from the front.

That is, two pairs of mounting plates 31, 31 are extended rearward from the main beam 4 at an interval slightly wider than the width of the rear frame 14, and the pipes 3
2 is supported in parallel with the main beam 4, and a plate 33 is also extended backward from the pipe 32, and the pin 30 described above is held by this plate 33 so as to be rotatable on its axis. The portions (both end positions) where the pin 30 engages with the hooks 28, 28 are formed as eccentric portions, and the pin 30 can be rotated by rotating a lever 34 extending backward from the appropriate position of the pin 30. Let's keep it that way.

Note that two plates 35, 35 are extended backward from the vicinity of the center of the pin 30 at a constant interval, and these plates 35, 35 and both of the rear frames 1 described above are connected to each other.
A vertical adjustment mechanism 38 is provided across two plates 37, 37 that similarly project rearward from a pipe 36 that extends parallel to the main beam 4 between the main beams 4 and the like.

In addition, the fixing mechanism 26 is constructed by raising a locking bolt 40 upward from the ceiling cover 17 of the second tilling device 1, and fitting a bracket 41 provided on the first tilling device 2 onto it from above. It is configured to be tightened and fixed with a locking nut 42, and further,
The fixing mechanism 27 is configured to fix the first tilling device and the second tilling device by a fixing lever device 43 on the outside of each side plate.

An elastic plate 44 for preventing soil from adhering is installed on the lower side of the ceiling cover 17 of the second tillage device 1, but the elastic plate 44 prevents the back and forth swinging of each of the hooks 28, 28 mentioned above. To prevent this from happening, leave an appropriate gap between the hook and the hook mounting base, and set it up in a slightly loosened state.

Therefore, when attaching the second tilling device 1 to the first tilling device 1, first, the second tilling device 1 is placed on the ground in a predetermined posture, and then the first tilling device 2 attached to the tractor is attached. Go close to it and engage the hooks 28, 28 with the pin 30. Once engaged, simply raise the first tiller, and the second tiller will rotate forward about the pin 30. Then, the first tilling device is brought into close contact with the first tilling device as expected, and the connection is then completed by fixing the frames of both devices using the fixing mechanisms 26 and 27.

(G) Effect of the device As is clear from the above explanation, in the present invention, the frame of the second tilling device detachably connected to the rear of the first tilling device is connected to the tilling claw on the second tilling shaft of the device. A frame is provided by attaching side plates and a ceiling cover to a main beam placed diagonally above and outward in front of the tip rotation locus, and a plurality of hooks are attached to the main beam of the frame at predetermined intervals in the lateral direction. The bases of the two tillers are each attached so that they can swing independently in the front and back direction, so even if the second tiller is not necessarily kept parallel to the first tiller, multiple hooks can be can independently swing back and forth to engage with a locking pin that is not in a parallel state, and the operation of maintaining the parallelism of both devices during connection is eased, making the connection work easier.

In addition, the elastic plate is installed loosely so that there is a gap between the hook mounting base and the member that supports it (the main beam), which prevents obstacles such as stones from being thrown up during plowing work. Even in the event of an obstacle collision, the shock of collision with an obstacle can be absorbed through the gap and damage to the elastic plate can be avoided.
Since the elastic plate itself is provided in a relaxed state, it has the advantage of being able to sufficiently vibrate to reliably prevent the accumulation of dirt.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main parts showing the combined state of the first tilling device and the second tilling device according to the present invention, FIG. 2 is a cross-sectional view taken from FIG. Figure 4 is a cross-sectional view of a portion extracted and enlarged.
FIG. 5 is a cross-sectional view taken along the negative arrow in FIG. 1, and FIG. 6 is a cross-sectional view showing the side fixing mechanism. 1...First tilling device, 2...First tilling device, 1
5... Side plate, 16... Main beam,
17...Ceiling cover, 20...Tilling claw tip rotation locus, 18...Second tilling shaft, 28...Hook, 30
...Latching pin, 44...Elastic plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. By engaging a plurality of hooks 28, 28 installed on the frame of the second tillage device 1 with a locking pin 30 provided on the frame side of the first tillage device 2. In the dual tilling device configured to detachably connect the second tilling device 1 to the rear of the first tilling device 2, the frame body of the second tilling device 1 has a main beam parallel to the second tilling shaft 18. 16 is disposed diagonally above and outward in front of the tilling claw tip rotation locus 20 on the second tilling axis, and side plates 15, 15 and a ceiling cover 17 are attached to the main beam.
The main beam 16 of the frame is attached and assembled.
(f) A frame structure in a dual-type cultivating device, in which the base portions of the hooks 28, 28 are attached at a predetermined interval in the lateral direction so that each hook can swing independently in the front and back direction. 2. The duplex set forth in claim 1 of the utility model registration claim, which is covered with an elastic plate 44 that is inserted in a slack manner so as not to hinder the swinging of the main beam lower hooks 28, 28 on the lower side of the ceiling cover. Frame structure in shape cultivation equipment.