JPH0448684Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a multi-sheet holding device for mobile agricultural machinery.

BACKGROUND ART Conventionally, there is a mobile agricultural machine that continuously shapes ridges and covers the shaped ridges with a mulch sheet. In such mobile agricultural machines, there is a treading wheel that pulls out a rolled mulch sheet and presses both ends of the mulch sheet at the hem of the ridge, and a treading wheel that presses both ends of the mulch sheet at the hem of the ridge, and a treading wheel that presses the mulch sheet on the part pressed by the treading wheel. A multi-sheet covering device consisting of soil covering disks and the like is provided.

Here, as a general multi-sheet coating device, there is one shown in FIG. 4. That is, a support rod 1 connected to a mobile agricultural machine (not shown) has a link 2.
The pedal pressure wheel 3 is connected via the support rod 1.
A soil covering disk 4 located behind the treading wheel 3 is connected to the treading wheel 3. Note that a spring 5 is provided between the support rod 1 and the link 2 to bias the tread wheel 3 in the direction of contact with the ground.

Further, as shown in FIG. 5, an auxiliary roller 6 that comes into contact with the outer peripheral surface in front of the treading wheel 3 in the advancing direction is connected to the support rod 1, and the multi-sheet is pulled out by passing between the auxiliary roller 6 and the treading wheel 3. There is also a multi-sheet coating device that does this.

Problems to be Solved by the Invention According to the mulch sheet covering device shown in Figure 4, each time the mobile agricultural machine goes around the edge of a ridge, the operator leaves the driver's seat and covers the edge of the mulch sheet. The pressure wheel 3 must be used to hold down the treadle, which is one of the causes of reduced work efficiency. Also,
The mulch sheet is cut when the mobile agricultural machine rotates, but the ends of the mulch sheet supported by the mobile agricultural machine flap in the wind, and the mulch sheet gets caught in the rotating parts of the mobile agricultural machine, causing work to be interrupted. It may be forced.

Next, according to the mulch sheet coating device as shown in FIG. It is held in a pinched state by. Therefore, the ends of the mulch sheet do not flap in the wind and get caught in the rotating parts of the mobile agricultural machine, improving safety.
Further, at the start of work after traveling, if the treading wheel 3 is brought into contact with the ground and the mobile agricultural machine is advanced, the multi-sheet is automatically pulled out and is treaded by the treading wheel 3. Therefore, there is no need for the operator to press the end of the multi-sheet with the treading wheel 3, and work efficiency is improved. However, when the treading wheel 3 is pressed against the ground, the treading wheel 3 rotates upward about the fulcrum 7 of the link 2, while the auxiliary roller 6 is fixed at its mounting position. Therefore, the auxiliary roller 6 and the treading wheel 3 separate, and as the auxiliary roller 6 and the treading wheel 3 repeatedly come into contact with and separate from each other, the multi-sheet held between the auxiliary roller 6 and the treading wheel 3 comes off. If the mulch sheet comes out of the sandwiched state between the auxiliary roller 6 and the treading wheel 3, the operator must leave the driver's seat and sandwich the mulch sheet between the auxiliary roller 6 and the treading wheel 3. , which causes a decrease in work efficiency. When such mulch sheets come off frequently, work efficiency is significantly reduced.

Means to solve the problem In a mobile agricultural machine that supports a rolled mulch sheet and travels across ridges,
A pair of left and right treading wheels that touch the bottom of the ridge and rotate while pulling out the mulch sheet and press it down, and a soil covering disk that covers the part pressed by the treading wheels of the mulch sheet are provided. An auxiliary roller is provided which is arranged in an inverted V-shape in plan view with respect to the traveling direction of the mobile agricultural machine and comes into contact with the outer peripheral surface of the treading wheel in front of the treading wheel in the traveling direction, and this auxiliary roller is attached to an arm connected to the support shaft of the treadling wheel. Link.

Function The mulch sheet is held between an auxiliary roller and a treading wheel, and as the treading wheel rotates, it is pulled out and both ends are pressed by the treading wheel at the foot of the ridge, and a soil-covering disk is placed on the treading part of the mulch sheet by the treading wheel. Soil will be covered with soil. When the mulch sheet is cut while the mobile agricultural machine is moving around, the end of the mulch sheet supported by the mobile agricultural machine is held between the auxiliary roller and the treading wheel, and does not flap in the wind. When the machine is grounded and work begins, covering the ridges with the mulch sheet will automatically begin. Further, the auxiliary rollers are arranged in an inverted V-shape and are in contact with the outer circumferential surface of the treading wheel, and the multi-sheet is pulled out while being held between the auxiliary rollers and the treading wheel while being pulled outward. The auxiliary roller connected to the arm connected to the support shaft of the treading wheel moves up and down integrally with the treading wheel, and the state in which the multi-sheet is held between the auxiliary roller and the treading wheel is reliably maintained.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 3. First, a transmission case 10 is fixed to the rear end of a chassis 9 of a four-wheeled mobile agricultural machine 8 that travels on the ground, and an engine 11 is mounted on the upper part of the transmission case 10.
An axle 12 extending in the left-right direction is provided at the lower end of the transmission case 10, and upper ends of a pair of left and right transmission cases 13 are rotatable around the axis of the axle 12 at both ends of the axle 12. is connected to. The axle 12 is connected to the lower end of the transmission case 13 via a sprocket and a chain (not shown).
A rear wheel 15 is connected to these rotating shafts 14.

A main tower 16 extending upward is fixed to the front end of the chassis 9. A pair of upper and lower stays 17 are fixed to the main tower 16, and each of these stays 17 has a pair of front and rear compaction rollers 18. installed. A sub-tower 19 parallel to the main tower 16 is held by these rolling rollers 18 so as to be slidable in the vertical direction. A frame 20 extending rearward is fixed to the lower end of the sub-tower 19, and a rotary transmission case 21 and a hitch 22 are fixed to this frame 20. A tilling shaft 23 is provided at the lower end of the rotary transmission case 21 and extends in the left-right direction.
4 are connected. Further, a T-shaped bar 25 is inserted and fixed into the hitch 22 so as to be vertically adjustable, and a pair of left and right ridge shapers 26 are connected to this T-shaped bar 25. Note that a telescopic propeller shaft 2 for power transmission is provided between the input shaft (not shown) of the rotary transmission case 21 and the output shaft (not shown) of the transmission case 10.
7 are connected.

A subframe 28 is connected between the upper end of the main tower 16 and the rear part of the chassis 9, and a mounting stay 2 is fixed to the subframe 28.
9 is connected to the upper end of a telescopic hydraulic cylinder 30. This hydraulic cylinder 30 is arranged approximately parallel to the main tower 16, and the lower end of the hydraulic cylinder 30 is connected to the rotary transmission case 2.
1 is connected to a mounting stay 31 fixed to the upper end of the main body 1.

Next, a downwardly extending multi-sheet support section 32 is connected to the rear end of the chassis 9, and a multi-sheet support section 33 wound into a roll is supported at the lower end of this multi-sheet support section 32. ing.
Further, a support rod 34 extending downward is connected to the rear part of the mission case 10, and the support rod 34 extends downwardly.
A guide roll 35 is supported at the lower end of the roller 4.

A support rod 36 is connected to the rotary shaft 14 and extends rearward and is rotatable in the vertical direction about the axis of the rotary shaft 14 . The upper end of a link 37 is connected to the support rod 36, and a treading wheel 38 is connected to the lower end of the link 37, which presses the multi-sheet 33 pulled out from the multi-sheet support section 32 at the hem of the ridge. There is. Furthermore, a soil covering disk 39 is connected to the support rod 36 to cover the portion of the multi-sheet 33 pressed by the pressing wheel 38 with soil. Note that a pair of the support rods 36 are provided on the left and right, and a pair of tread pressure wheels 38 and soil covering disks 39 are also provided on the left and right. Next, an arm 41 extending forward in the traveling direction of the treading wheel 38 is connected to the support shaft 40 of the treading wheel 38 , and a tip end of the arm 41 has a shaft that is reversed in plan view with respect to the traveling direction of the mobile agricultural machine 8 . An auxiliary roller 42 is connected to the tread pressure wheel 38, which is arranged in a square shape and comes into contact with the inner outer peripheral surface of the tread pressure wheel 38.

In such a configuration, first, the ridge-raising work will be explained. The hydraulic cylinder 30 is extended to lower the rotor 24 and the ridge shaper 26 and ground them. As a result, the rotor 24, which is rotated by the power transmitted from the engine 11 via the propeller shaft 27, plows the field, expands and softens the soil, and collects the expanded and softened soil in the center of the vehicle body.
The ridges are shaped by a ridge shaper 26 located at the rear of 4.

Next, covering the shaped ridges with the mulch sheet 33 will be explained. The multi-sheet 33 is pulled out while being held between the auxiliary roller 42 and the treading wheel 38, and is set to be pressed by the treading wheel 38. Therefore, when the mobile agricultural machine 1 is advanced after the support rod 36 is rotated downward around the rotating shaft 14 and the tread wheel 38 is brought into contact with the ground, the mulch sheet 33 is pulled out as the tread wheel 38 rotates. Pressure ring 3 at the bottom of the ridge
Pressed by 8. Furthermore, multi-sheet 33
The area treaded by the treading wheel 38 is covered with soil by the soil covering disk 39. Note that, prior to the covering operation with the multi-sheet 33, the transmission case 13 is slid in the left-right direction according to the width of the ridge to be shaped, and the treading wheel 38 is adjusted so as to touch the ground at the bottom of the ridge.

Here, when the treading wheel 38 is pressed against the ground, the treading wheel 38 rotates upward about the fulcrum 43 of the link 37. At this time, the auxiliary roller 42 connected to the arm 41 connected to the support shaft 40 of the treading wheel 38 also rises together with the treading wheel 38. Therefore, the contact state between the auxiliary roller 42 and the treading wheel 38 is maintained constant, and the state in which the multi-sheet 33 is held between the auxiliary roller 42 and the treading wheel 38 is also maintained constant. Therefore, even when the treading wheel 38 moves up and down, the multi-sheet 33 does not come out of the sandwiched state between the auxiliary roller 42 and the treading wheel 38, and the covering operation of the multi-sheet 33 continues in a good condition. Further, since the auxiliary roller 42 is arranged in an inverted V-shape with respect to the traveling direction of the mobile agricultural machine and is in contact with the outer peripheral surface of the treading wheel 38, it is held between the auxiliary roller 42 and the treading wheel 38. The mulch sheet 33 is pulled out while being pulled outward, and the ridges are covered with the mulch sheet 33 without sagging.

Next, when the mobile agricultural machine 8 is to be rotated, the mulch sheet 33 is cut behind the treading wheel 38. As a result, the end of the mulch sheet 33 supported by the mobile agricultural machine 8 is maintained between the auxiliary roller 42 and the treading wheel 38, and the mulch sheet 33 does not flap in the wind during rotation, and the mulch sheet 33 The occurrence of an accident in which the sheet 33 gets caught in the rotating part of the mobile agricultural machine 8 is prevented. Furthermore, after the rotation, the treadling wheel 38 is grounded and the mobile agricultural machine 8
When the multi-sheet 33 is advanced, the covering of the multi-sheet 33 is automatically started, and there is no need for the operator to leave the driver's seat and press both ends of the multi-sheet 33 with the pressure wheels 38, improving work efficiency.

Effects of the invention As described above, this invention connects the auxiliary roller that contacts the outer peripheral surface of the treading wheel to the arm connected to the support shaft of the treading wheel, so that when the treading wheel moves up and down, the auxiliary roller also moves in one piece. Therefore, the treading wheel and the auxiliary roller can be kept in constant contact with each other to maintain a constant state of holding the multi-sheet between the treading wheel and the auxiliary roller. It is possible to prevent the mulch sheet from coming off from being held between the wheels, improve work efficiency by preventing work interruptions due to the mulch sheet coming off, and the auxiliary rollers are arranged in an inverted V-shape. The mulch sheet is held in contact with the outer circumferential surface of the treading wheel, and the mulch sheet that is pulled out while being held between the auxiliary roller and the treading wheel can be pulled outward and pulled out, ensuring that the ridges are covered with the mulch sheet without sagging. It has the following effects:

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention, in which Figure 1 is a side view, Figure 2 is a plan view, Figure 3 is a side view showing an enlarged multi-sheet covering section, and Figure 3 is a side view showing an enlarged multi-sheet covering section. FIG. 4 is a perspective view showing a conventional example, and FIG. 5 is a perspective view showing another conventional example. 8...Mobile agricultural machine, 33...Multi-seat, 38
...Treading wheel, 39...Soil covering disk, 40...Spindle, 41...Arm, 42...Auxiliary roller.

Claims (1)

[Scope of utility model registration request] In mobile agricultural machines that support rolled mulch sheets and travel across ridges,
A pair of left and right treading wheels that touch the bottom of the ridge and rotate while pulling out and press the mulch sheet, and a soil covering disk that covers the part of the mulch sheet treaded by the treading wheels are provided, An arm is connected to the support shaft, and an auxiliary roller is connected to the arm, which is arranged in an inverted V-shape in a plan view with respect to the traveling direction of the mobile agricultural machine and comes into contact with the outer circumferential surface of the tread pressure wheel in front of the traveling direction. A multi-sheet holding device for mobile agricultural machinery featuring: