JPS5939854Y2 - floating device - Google Patents

Description

[Detailed description of the invention] This invention relates to a floating device for a rotary device, and when a working tool such as a soil pot is attached to a gauge support frame and the suction angle of the working tool is increased using the floating device, the suction angle of the working tool is always kept constant. This is so that an appropriate suction angle can be obtained.

In a rotary device equipped with a gauge wheel behind the rotary tilling section via a gauge support frame, the gauge wheel becomes an obstacle and makes tilling at the edge of the ridge difficult, so the gauge support frame can be moved up and down as necessary. A so-called floating device is used in which a mechanism is provided to allow the gauge wheel to be placed on the ridge by lifting the gauge support frame during ridge tilling.

By the way, when a soil cultivator is attached to the rear end of the gauge support frame and the soil is cultivated at the same time as tilling, the suction angle of the soil cultivator can be increased by activating the floating device and lifting the gauge support frame at the start of work. is possible.

However, as mentioned above, normal floating devices are configured to have a floating range that allows the gauge wheel to rest on the ridge, so if this device is used as is during soil cultivation, the gauge support frame will rise too much. There is a drawback that the suction angle exceeds the appropriate suction angle of the soil cultivator.

The present invention solves these conventional problems, and its features are that the gauge support frame is pivoted to the rotary body so that it can move up and down, and the front end side is attached to the top of the rotary body. In a rotary device, there is provided a front ascending plowing depth adjustment rod that is pivotally supported and whose rear end is connected to the gauge support frame side, and a handle for adjustment is provided at the front end of this plowing depth adjustment rod. A flexible bending link is interposed between the depth adjustment rod and the gauge support frame so that the gauge support frame floats up and down when the plowing depth adjustment rod is bent so that the floating range of the gauge support frame is within a specified range. The feature lies in that a regulating means for regulating the bending angle of the bending link is provided in the gauge support frame.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figure, 1 is a tractor body, 2 is a hydraulic system, and has a pair of left and right lift arms 3.

4 is a rotary body, gear case 5, transmission case 6,
The rotary body 4 is composed of a top mast 7, etc., and a three-point linkage mechanism 1 consisting of a top link 8 and a lower link 9.
It is attached to the rear of the tractor body 1 via a hydraulic system 2, and can be raised and lowered by a hydraulic system 2.

Reference numeral 11 denotes a pawl shaft supported at the lower end of the transmission case 6, which is provided with a large number of tilling pawls 12, and these pawl shafts 11 and tilling pawls 12 constitute a rotary tilling section.

13' is a top cover, 14 is a rear cover, and 15 is a side cover.

Reference numeral 16 denotes a white joint shaft that interlocks and connects the PTO shaft 17 of the tractor body 1 and the human power shaft of the gear case 5, and is detachably connected to the PTO shaft 17 via a coupling device 18 as shown in FIG. .

That is, the coupling device 18 connects the relay body 1 fitted onto the PTO shaft 17.
9, a connecting body 20 that removably fits onto and engages the relay body 19, and a connecting claw 21 that connects the two.

The relay body 19 has a conical part 19a, a collar part 19b, and a driving claw 19c.
It is fitted onto the PTO shaft 17 and detachably fixed by a retaining pin 22.

The connecting body 20 has a tapered hole 20a that fits into the conical portion 19a.
and a driven claw 20b that engages with the driving claw 19c when they are fitted.
A plurality of connecting pawls 21 are pivotally supported on the outer periphery of the connecting body 20 for each J by a support shaft 23, and each of the connecting pawls 21 is resiliently held by a spring 24 to engage with the flange 19b of the relay body j9. supported.

Reference numeral 25 denotes a gauge support frame, which is pivotally supported on the rotary body 4 via a support shaft 26 so as to be able to move up and down, and gauge wheels are attached to both sides of the rear end of this gauge support frame 25 in a detachable manner during normal tilling. However, the example shown shows the condition during soil cultivation work, and the gauge ring has been removed.

Reference numeral 27 denotes a soil cultivator, which is pivotally supported by a support 28 to be rotatable within a required range around a horizontal axis 29, and the support 28 is detachably attached to the center of the rear end of the gauge support frame 25.

Reference numeral 30 denotes a plowing depth adjustment rod, and a screw shaft 32 is rotatably supported at the rear end of the top mast 7 via a rotary piece 31;
It is provided with a threaded cylinder 33 that is screwed into this, and a handle 34 for rotating the threaded shaft 32, and a two-pronged connecting fitting 35 is fixed to the threaded cylinder 33.

On the other hand, a bending link 39 and an operating link 40 are rotatably supported by a pivot shaft 38 on a mounting bracket 37 provided on a horizontal member 36 of the gauge support frame 25, as shown in FIGS. 3 and 4. be done.

The bending link 39 is pivotably connected to the connecting fitting 35 by a pivot shaft 41, and has a tapered surface 39a at the tip, and this tapered surface 39a and the contact surface 35 of the connecting fitting 35
A wedge body 42 for restraining the bending link 39 and the connecting fitting 35 in an unbendable manner is removably inserted between the bending link 39 and the connecting fitting 35.

The operating link 40 has a U-shaped cross section sandwiching the bending link 39, and a wedge body 42 of the operating link 401 is rotatably supported by a pin 43, and a pivot shaft 41 is freely attached to the operating link 40. A fitting hole 44 is formed.

The hole 44 is sized to allow relative rotation of the actuating link 40 with respect to the bending link 39 so that the wedge body 42 can be inserted into and removed from the bending link 39 and the connecting fitting 35.

Reference numeral 45 designates an operating lever for operating the operating link 40 in the direction in which the wedge body 42 is removed, and is supported by the mounting bracket 37 by a support shaft 46 .

A plate-shaped protrusion 47 is fixed to the support shaft 46, and an abutment engagement plate 48 is provided to the operating link 40 so that the protrusion 47 can abut and engage.

Reference numeral 49 denotes a regulating member that connects the mounting bracket 3 via the support shaft 46.
A pivot support thin 41 is slidably fitted into an elongated hole 50 formed on the free end side of the regulating member 49 within the range thereof.

Therefore, the refraction range of the refraction link 39 is restricted within the range of the elongated hole 50, and is set so that the soil cultivator 27 has an appropriate suction angle at the time of maximum refraction.

51 is a return spring for the operating lever 45.

Next, the action will be explained.

The solid lines in FIG. 1, FIGS. 3 and 4 show the normal locking state, in which the wedge body 42
and the tapered surface 39a of the bending link 39, so the connecting fitting 35 and the bending link 39 cannot be bent. The soil is tilled to a predetermined plowing depth, and at the same time, the soil left by the plowing is cultivated using a soil cultivator 27.

By the way, when starting work, first operate the operating lever 45 in the direction of the arrow a, bring the protrusion 47 into contact with the abutment engagement plate 48 via the support shaft 46, and move the operating link 40 within the range of the hole 44.
The wedge body 42 is removed from between the connecting fitting 35 and the bending link 39 by rotating in the direction of the arrow.

Then, when the operating lever 45 is operated to a predetermined position, the contact engagement plate 48 comes into contact with the bending link 39 and the J bending link 39
After rotating the and operating link 40 together in the direction of arrow b, the protrusion 47 engages with the abutment engagement plate 48, and the bending link 39
The operating link 40 is locked unrotatably in the opposite direction of the arrow.

If you lower the entire rotary device, the pivot shaft 41 will be above the line connecting the rotation piece 31 and the pivot shaft 38 when the soil cultivator 27 touches the field. axis 4
At the 1 position, the connecting fitting 35 and the bending link 39 bend upward, and the gauge support frame 25 accordingly floats upward around the support shaft 26.

Then, as shown in FIG. 5, when the pivot shaft 41 engages with the long hole 50 of the regulating member 49, the connecting fitting 35
becomes non-refractive beyond this point, etc. 1. As shown by the imaginary line in the figure, the soil cultivator 27 will penetrate into the field at an optimal suction angle.

Therefore, the length of plowing to reach a predetermined depth can be significantly shortened.

In this case, the tilling depth adjusting rod 30 is pivotally supported by the rotary piece 31, so simply changing the inclination angle of the tilling depth adjusting rod 30, which is upwardly shaped in the front, increases the positional force of the handle 34 by around 4 degrees. There is no need to move, and adjustments can be made easily.

When connecting the universal joint shaft 16 to the PTO shaft 17, if the connecting device 18 is used, the connecting body 20 is simply fitted onto the relay body 19 from behind, and the driven pawl 20b engages with the driving pawl 19c to complete the connection. Since the pawl 21 engages with the flange 19b, the connection can be made very easily, and when it is removed, the connecting body 20 can be pulled out rearward while the connecting pawl 21 is pressed in a direction against the spring 24.

'For example, as shown in FIGS. 6 and 7, if an adjusting plate 53 is provided on the regulating member 49 using a bolt/nut 52 or the like, and the range of the elongated hole 50 can be adjusted by moving the adjusting plate 53, The suction angle of the soil cultivator 27 can also be adjusted arbitrarily.

As described in detail in the embodiments above, the present invention is equipped with a regulating means for regulating the floating range of the gauge support frame to a predetermined range, so that working tools such as a soil gardener can be attached to the gauge support frame. When performing work using floating motion, the length of plowing at the edge of the field can be significantly shortened by adjusting the suction angle of the work tool to an appropriate angle, allowing for efficient work.

In addition, in a device in which the front end side of the tillage depth adjustment rod is pivotally supported on the rotary body, there is a space between the tillage depth adjustment rod and the gauge support frame.
A bending link that can bend and extend freely is interposed with respect to the plowing depth adjustment rod, and the gauge support frame is made to float up and down by the bending of this bending link, so the position of the handle does not change significantly even when floating. The handle can be easily adjusted, and the floating range is relatively large due to the compact movement.

In addition, since the regulating means is provided on the gauge support frame to regulate the bending angle of the bending link, it has a simpler structure and can regulate it more reliably than a device installed between the plowing depth adjustment rod and the bending link. can do.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing an embodiment of the present invention, Fig. 2 is a top view of the connecting device, Fig. 3 is a sectional view of the floating device, and Figs. A-A line arrow view in Figure 3,
FIG. 5 is a diagram for explaining the interaction, FIG. 6 is a sectional view showing another embodiment, and FIG. 7 is a view taken along the line B--B in FIG. 6. 1... Tractor body, 4... Rotary body, 25... Gauge support frame, 27...
- Cultivator, 30... Cultivation depth adjustment rod, 35...
...Connection fittings, 39...Refraction links, 40...
...Operating link, 49...Regulation member, 50
・・・・・・Long hole.

Claims (1)

[Scope of utility model registration request] A gauge support frame is pivotally supported on the rotary body so as to be able to move up and down, and a front ascending plowing depth adjustment rod is provided whose front end side is pivoted to the upper part of the rotary body and whose rear end is connected to the gauge support frame side. In this rotary device, which has an adjustment handle on the front end of the tillage depth adjustment rod, the tillage depth is adjusted so that the gauge support frame floats up and down when bent between the gauge support frame and the tillage depth adjustment rod. A floating device comprising a bending link that is freely bendable and extensible with respect to a rod, and a regulating means is provided on the gauge support frame to regulate the bending angle of the bending link so that the floating range of the gauge support frame is within a predetermined range. .