JPS5915844Y2 - Claw shaft height adjustment device for Tsuchiyaro equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pawl shaft height adjustment device for a tractor-mounted dowel device.

Conventionally, in the tractor-mounted earth mooring device that made it possible to easily level the soil by breaking up high ridges and embankments, the working depth can be adjusted by adjusting the height of the soil crushing claw relative to the claw shaft. However, it has been difficult to sufficiently increase the working depth adjustment amount only by adjusting the height of the soil crushing claws.

Therefore, it may be possible to increase the amount of work depth adjustment by making the height of the claw shaft adjustable relative to the side plate to which it is attached, and adjusting the height of the claw shaft separately from the height adjustment of the crushing claw. ,
If the claw shaft is simply attached to the side plate so that its vertical position can be changed, problems will arise such as soil leaking from the holes of unused claw shaft mounting bolts on the side plate and the need to drill multiple bolt holes. .

In view of these various points, the present invention has been developed by attaching a mounting flange that is eccentrically fixed to the claw shaft to the side plate so that the angle can be changed in the circumferential direction of the claw shaft, and by changing the angle of the mounting flange. To provide a claw shaft height adjusting device for a mulching device, which allows the height of the claw shaft to be adjusted, thereby adjusting the working depth of the soil crushing claws.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIGS. 1 and 2, 1 is a tractor body, 2 is a hydraulic system for lifting and lowering a working machine, and has a pair of left and right lift arms 3.

Reference numeral 4 denotes a three-point linkage mechanism that attaches the doshiyo device 5 to the rear of the tractor body 1, which includes a top link 6 and a pair of left and right lower links 7.
Each lower link 7 is connected to the lift arm 3 via a lift rod 8.

The Tsuchiyari device 5 includes a pair of left and right side plates 9, 9, and the side plates 9, 9.
A claw shaft 10 that is removably fixed to the inner surface of the side plate 9 with bolts 26 or the like and is suspended horizontally between the front ends of Fixed earth paneling 1 provided between the claws 11 and the rear end of the side plate 9
2 and a movable earth panel 13, the claw shaft 10 has a rectangular cylindrical shape, in which mounting holes 14 are formed at predetermined intervals in the lateral direction, and a top mast 15 stands in the lateral center. Lower link mounting brackets 16 are provided at symmetrical positions around the top mast 15, projecting forward.
A top link 6 is connected to the top mast 15, and a lower link 7 is connected to the lower link mounting bracket 16, respectively.

The crushing claw 11 is equipped with a claw metal fitting 17 at the lower end,
The crushed soil claw 11 has two engaging recesses 18 in the upper part of the front side, as shown in FIGS. 14 is fixed by a retaining piece 19 in a state where it is engaged with the front edge thereof so that it cannot be pulled out.

The fixed soil parquet board 12 is fixed to a pair of left and right side plates 9, respectively, and a blade 21 is provided at its lower end so as to project slightly downward from the side plates 9.

The movable earth paneling 13 is swingably supported by a support shaft 22 between the side plates 9, 9, and has a wide blade 23 that projects laterally outward from each side plate 9. Stoppers 24 for regulating the fixed earth panel 13 to the imaginary line position shown in FIG. 1 when moving backward are provided at the center and at both left and right ends of the fixed earth paneling 12, respectively.

As shown in FIGS. 3, 4, and 5, both ends 27 and 27 of the claw shaft 10, which is horizontally suspended in a connected manner between the left and right side plates 9, 9, are eccentrically shaped like square plates. mounting flange 28
．． 28 is fixed, and the mounting flanges 28, 28 are provided with four bolt holes 29 at the corner positions of the square. bolt 26
It is possible to attach it to the side plate 9 by inserting and fitting etc.

Moreover, since the center point A of the mounting flange 28 and the center point B of the rectangular cylindrical claw shaft 10 are eccentric by a certain amount,
By rotating the claw shaft 10 around its axis and selecting various holes 29 of the mounting flange 28 and corresponding holes of the side plate 9, the ground 30 can be formed as shown in FIG. It is possible to freely reduce the height dimension (Hl) from to the center point B of the claw shaft 10 or increase the same height dimension (H2) as shown in FIG. The penetration depth dimension (working depth) of 17 can be freely selected from large to small.

In addition, as shown in FIG. 3, the four surfaces 31 of the square tubular claw shaft 10,
31.31.31 If a mounting hole 14 is provided in each, the claw shaft 1
At the position rotated every 90 degrees from 0, the mounting flange 28,
28 on the inner surface of the side plate 9, four different intrusion dimensions can be obtained.

That is, when attaching the crushing claws 11 to the claw shaft 10 in a working posture, if the mounting holes 14 are formed on a pair of opposing sides of the claw shaft 10, the crushing soil claws 11 can be inserted from the opposite direction. 2 groups of claw attachment parts will be formed in the 4
If mounting holes 14 are formed in the surface, four groups of claw mounting portions will be provided.

However, in the embodiment, when the mounting flange 28 is rotated 90 degrees left and right from the state shown in FIG. 4, the heights of the center point B are the same, so there are three groups of claw mounting portions.

In the above-mentioned configuration, for example, during levying work in which an embankment is broken and leveled, the tractor body 1 is moved forward with the levying device 5 lowered and grounded by the hydraulic device 2 at the work position.

Then, the claw metal fittings 17 of the earth crushing claws 11 bite into the earth by a predetermined penetration dimension as described above, and crush the embankment.

At this time, the two or four types of intrusion dimensions can be changed to the optimum value depending on conditions such as the hardness of the embankment, the soil quality, and the purpose of the work.

The soil crushed by the crushing claws 11 enters between the pair of left and right side plates 9 as the tractor body 1 moves forward, and is collected by the fixed earth paneling 12. It captures the earth and sand and moves it to other suitable locations.

At this time, if the hydraulic device 2 is used to slightly lift the earth mooring device 5 to leave a gap between the lower end of the fixed soil earth plate 12 and the ground, the trapped earth and sand will be gradually discharged from that gap. Since the wide blade 23 of the movable earthen board 13 slides on it, it is possible to level the ground neatly.

Further, when filling a depression, the earth mooring device 5 can be lowered and the earth and sand can be moved to the depression while being trapped by the side plate 9 and the fixed soil earth board 12.

As described in detail above, in the present invention, both ends 2 of the claw shaft 10
Mounting flanges 28.28 are eccentrically fixed to 7.27, and both mounting flanges 28.28 are attached to the side plate 9°9 so as to be freely attachable and detachable, and the angle can be changed freely in the direction of rotating the claw shaft 10. At least two groups of pawl attachment portions 14 are formed in the circumferential direction on the pawl shaft 10 in order to attach the crushing pawl 11 to the working position at each rotated position. By attaching it to the side plates 9, 9, the height from the ground 30 to the claw shaft 10 can be changed, and the crushed soil claws 11 are attached to the claw shaft 10 whose height has been changed, and a group of claw attachment portions 14 are attached to the claw shaft 10 whose height has been changed. By attaching it to the working posture through the handle, it is possible to perform work at different working depths, making it possible to perform work in accordance with the land conditions or optimum traction resistance.

[Brief explanation of drawings]

Fig. 1 is a partially sectional side view showing one embodiment of the present invention;
The figure is a plan view, Figure 3 is a perspective view of main parts, Figures 4 and 5.
The figure is a side view of the main part for explaining the operation. 9...Side plate, 10...Claw shaft, 27...
...Both ends, 28...Mounting flange.

Claims (1)

[Scope of utility model registration request] In the earth mooring device, in which a claw shaft 10 is constructed in a connected manner on a pair of left and right side plates 9, 9, and a large number of crushed earth claws 11 are detachably attached to the claw shaft 10 in a working position, both ends of the claw shaft 10 are 2
Mounting flanges 28, 28 are eccentrically fixed to 7.27, and both mounting flanges 28, 28 are attached to the side plates 9, 9 so as to be freely attachable and detachable, and the angle can be freely changed in the direction of rotating the claw shaft 10. At least two groups of pawl attachment portions 14 are formed in the circumferential direction of the pawl shaft 10 in order to attach the crushing pawl 11 to a working posture at each rotated position. Height adjustment device.