JPH0456561B2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application This invention relates to a dual-type tillage device in which a first tillage device and a second tillage device are coupled and separably arranged in front and back. This relates to the bonding structure when bonding.

(b) Conventional technology A so-called double-type tilling device, in which a second tilling device is installed in parallel behind a first tilling device, is often used for tilling hard soil, etc. because it enhances the soil crushing effect on the soil. Ta.

However, conventional dual-type tilling devices are either fixed types in which the first tilling device and the second tilling device cannot be separated, or are fixed type in which the vertical positions cannot be adjusted even if they can be separated. Ta.

(c) Problems to be solved by the invention Therefore, if it is a fixed type, it cannot be separated to form a single type tillage device, and if it is a type that does not change its vertical position, the first tiller cannot be separated. It is not possible to adjust the vertical position of the second tilling device with respect to the tilling device, that is, the plowing depth of the second tilling device, etc., and these tilling devices are usually quite heavy, so the operation of connecting them is difficult. It was.

(d) Means for Solving the Problems Therefore, the present invention provides a combination structure for a dual-type tilling device in which a second tilling device is removably connected to the rear of the first tilling device. a hook separated for a certain period of time, a pin for engaging the hook on the first tilling device, a locking bolt on the second tilling device, and a locking bolt on the first tilling device; The above-mentioned problems are solved by connecting the first tilling device and the second tilling device with a fixing mechanism each having a bracket that fits into a fixing bolt and is tightened with a fixing nut. be.

(E) Function By adopting such a configuration, it is possible to engage the second tilling device with the first tilling device attached to the tractor, and also to fully connect the two by means of the fixing mechanism. .

Furthermore, if the engagement mechanism is provided with a vertical adjustment mechanism that can move the second tilling device up and down, the vertical position of both, that is, the plowing depth position of the second tilling device with respect to the first tilling device, can also be freely adjusted. (The plowing depth of the first tilling device is adjusted by adjusting the link mechanism of the tractor).

(f) Example Hereinafter, an example of the present invention will be described with reference to the drawings, and FIG. 1 shows a state in which the first tilling device and the second tilling device are coupled by the coupling structure according to the present invention. 2 to 5 are respectively - sectional views, - sectional views, - sectional views, and - sectional views of FIG. 1; FIG. 6 is a sectional plan view showing the side fixing mechanism; 7 and 8 are a partially sectional side view and a developed sectional plan view showing the drive mechanism.

Dual tillage equipment is mainly used in Figures 1 and 2.
As shown in the figure, a second tilling device 2 is connected to the rear of the first tilling device 1 in parallel.

Regarding the first tillage device 1, in addition to connecting the side plates 3 on both sides by a main beam 4 extending laterally, the upper part is surrounded by a rotary cover 5, and the space formed by these is A first tilling shaft 6 is similarly rotatably supported laterally and horizontally. A transmission case 7 is provided on the outside of one side plate 3 and is connected to the main beam 4 to transmit power to the first tilling shaft 6.
It has a normal structure in which a large number of tilling claws 8 are attached.

In addition, in the center of the main beam 4, there is a
A gear box 9 that receives power from the PTO shaft is provided, and plates 10 are fixed to both sides of the gear box 9 in the longitudinal direction, and a mast 11 is made to stand up from these members.
Further, a rear frame 12 is pivotally connected to the plate 10 by a pin 13, and is allowed to swing vertically and extend backward. A vertical adjustment mechanism 17 consisting of a handle 16 and the like is interposed so that the angle (space) between the mast 11 and the rear frame 12 can be freely adjusted.

Regarding the second tilling device 2, it is the same as above in that it is provided with a side plate 18, a beam (vibe) 19, a rotary cover 20, a second tilling shaft 21, a tilling claw 22, etc. other,
At the rear, a rake 23 for crushing soil is installed, as well as the ceiling part of the rotary cover 20 and the beam 19.
An elastic membrane 24 for preventing soil from adhering to the tiller is stretched in a slightly loosened state below the tiller.
directly hit the tilling claws 22 to vibrate and force them to fall).

Further, at the rear of the second tillage device 2, there is a cover shaft 25 provided horizontally at the rear of the rotary cover 20.
A rear cover 26 is provided which is slidably pivoted up and down, and a hanger rod 27 is interposed between this and the rear frame 12 so as to be able to return to the normal position by a spring 28.

The first tilling device 1 and the second tilling device 2 having the above-mentioned configurations are connected as necessary, and this is done first by using an engagement mechanism 29 which will be explained below.
They are linked together and then fully fixed by the fixing mechanism 30.

The engagement mechanism 29 is connected to the second tillage device 2.
At approximately the center of gravity in the left-right direction (slightly biased to the left of the center), raise plate-shaped hooks 31 with openings at the front at regular intervals from the beam 19 in such a manner as to break through the rotary cover 20. put. On the other hand, the first tilling device 1 is provided with a pin 32 installed in the left-right direction so as to engage the hook 31 from the front. That is, two pairs of plates 33 are extended rearward from the main beam 4 at an interval slightly wider than the width of the rear frame 12 described above, and the beam 34 is connected to the main beam 4.
A plate 35 is also extended backward from this beam 34, and the pin 32 described above is held by this plate 35 so as to be rotatable. The portion (both end positions) where this pin 32 engages with the hook 31 is formed in an eccentric portion 32a, and this pin 32 can be rotated by rotating a lever 36 extending backward from a proper position of the pin 32. Let's do it like this.

In addition, two plates 37 are extended from near the center of this pin 32 at a constant interval, and from a height 38 that is passed parallel to the main beam 4 etc. between this plate 37 and both rear frames 12 mentioned above. Similarly, a vertical adjustment mechanism 40 consisting of the above-mentioned outer cylinder 14, inner cylinder 15, handle 16, etc. is provided over two plates 39 that protrude rearward.

By the way, this engagement first involves the second tilling device 2.
is set on the ground using stand 41, etc., and then,
The first tilling device 1 mounted on the tractor is brought close to engage the hook 31 and the pin 32. Once this engagement is completed, if you raise the link mechanism of the tractor and raise the first tilling device 1, the center of gravity of the second tilling device 2 will be at the lower rear.
The first tilling device 1 rotates forward about the pin 32.
This results in strong contact with the surface, which is favorable for the subsequent fixing operation (see Fig. 3).

The fixing mechanism 30 is a locking bolt 42.
is lifted up from the rotary cover 19 etc. of the second tilling device 2, the bracket 43 provided on the first tilling device 1 is fitted from above, and the locking nut 44 is tightened to secure it. That is, the brackets 43 are rotatably fitted near both ends of the beam 34 described above, and when the second tilling device 2 is engaged with the first tilling device 1, it is lowered onto the stop bolt 42, It is sufficient to insert the fitting hole 45 formed at the bottom thereof and tighten it with a bag-shaped locking nut 44. Note that this bracket 42 can be rotated and fixed freely by tightening and loosening the clamp screw 46, so before linking, rotate it backwards so that it does not interfere with this operation. (See Figure 4).

In addition, the first tilling device 1 and the second tilling device 2 may be fixed by a fixing lever device 47 on the outside of their respective side plates 3, 18. That is, the fixed arm 48 is attached to the side plate 3 on the second tillage device 2 side by the pin 5 of the lever 49.
It is configured so that it can freely move toward and near the first tilling device 1 side by rotating around 0, and when both 1 and 2 are connected, a fixed arm 48 is formed on the side plate 18 of the first tilling device 1. Then, the lever 49 is rotated and tightened (see FIG. 6).

In addition, in the state where the first tilling device 1 and the second tilling device 2 are combined in this way, if the above-mentioned vertical adjustment device 17 is operated, the combination of both 1 and 2 will be centered around the first tilling shaft 6. As a result, the tilling depth of the second tilling device 2 relative to the first tilling device 1 can be adjusted (see Figs. 2 and 3).
(see figure).

By the way, during the connection and fixation as described above, the side plates 3 and 18 of the first tillage device 1 and the second tillage device 2 partially overlap with each other, but the ends should be bent outward or inward. If so, it will be easier to enter at this time (see FIGS. 1 and 6).
Furthermore, when engaged, the first tilling device 1 attached to the tractor must approach the second tilling device 2 with its vertical and horizontal positions approximately aligned;
Since the parts of the engagement mechanism 29 may be difficult to see because the parts are concentrated, this can be easily done by providing positioning mechanisms 54, each consisting of a pin 52 and an arch 53, at a position slightly apart from the engagement mechanism 29. (See Figure 5).

Next is the drive system, which is the 7th part shown below.
It is constructed as shown in Fig. 8 and Fig. 8.

That is, first, power is transmitted to the first tilling device 1, and as is well known, the power of the tractor is transmitted from the PTO shaft to the gear box 9 via the universal joint (not shown), and the power is transmitted to the main beam 4. It is converted into a drive shaft 55 housed therein, guided to the transmission case 7 side, and transmitted to the first tilling shaft 6 by a chain mechanism 56 or the like.

On the other hand, regarding power transmission to the second tillage device 2,
This means that the drive shaft 5 is located outside the drive case 7.
5 and the second tilling shaft 21 are directly connected to each other by a drive mechanism 58 comprising a bendable, telescopic transmission shaft 57 and the like.

(g) Effects of the invention Since this invention is as described above, the following effects can be expected.

That is, by sequentially operating the engagement mechanism 29 and the fixing mechanism 30 after attaching the first tilling device 1 to the tractor, the first tilling device 1 and the second tilling device 2 are removed.
It is possible to reliably and firmly combine (separate by performing the reverse operation).

This work can be done by one person because the locking nut 44, which can be manually operated, can be used to tighten the locking nut 44 after it is engaged by moving the tractor.

[Brief explanation of drawings]

The drawings show embodiments of the invention,
FIG. 1 is a plan view of a main part showing a state in which a first tilling device and a second tilling device are coupled by a coupling structure according to the present invention, and FIGS. 2 to 5 are respective views of FIG. 1.
sectional view, - sectional view, - sectional view, -
6 is a sectional plan view showing the side fixing mechanism, and FIGS. 7 and 8 are a partially sectional side view and a developed sectional plan view showing the drive mechanism. (Symbol), 1... First tilling device, 2... Second tilling device, 29... Engagement mechanism, 30... Fixing mechanism,
31... Hook, 32... Pin, 42... Locking bolt, 43... Bracket, 44... Locking nut.

Claims (1)

[Claims] 1 In a combination structure of a dual tilling device in which a second tilling device 2 is separably connected to the rear of the first tilling device 1, the hook 31 is isolated from the second tilling device 2 for a certain period of time, and the hook 31 is connected to the second tilling device 2 for a certain period of time This hook 31 is attached to device 1.
An engagement mechanism 29 configured by providing pins 32 that engage with each other, and a locking bolt 42 on the second tillage device 2.
Also, attach this fixing bolt 42 to the first tilling device 1.
The fixing mechanism 3 is configured by providing brackets 43 that are fitted into the brackets and tightened with locking nuts 44.
1. A combination structure for a double-type tillage device, characterized in that a first tillage device 1 and a second tillage device 2 are connected by a 0.