JPH044514Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is based on rotary tillage of fields, shaping of multiple ridges, covering of ridges and furrows with multi-film, and placing soil on top of the mulch film covering the ridges and furrows. This invention relates to a soil lifting device for a multi-film covering device that supplies soil from a rotary tilled field to a soil hanging device that hangs soil on top of the multi-film in a working machine that continuously presses the multi-film in one stroke. .

Conventional technology Conventionally, rotary tillage of fields, shaping of multiple ridges,
There is a working machine that continuously covers the ridges and furrows with a multi-film and presses down the multi-film by applying soil on the multi-film covering the ridges and grooves in one stroke. In such a work machine, a conveyor belt is provided whose lower end is located behind the rotary tiller, and this conveyor belt is rotated to supply soil from the rotary tilled field to a soil hanging device that hangs soil on the multi-film. It is common to do so. Note that the lower end of the conveyor belt is generally wound around an idler pulley, and the upper end of the conveyor belt is generally wound around a drive pulley. A flat pulley whose width is wider than the width of the conveyor belt is used as the idler pulley.

Problems that the invention aims to solve: Soil tends to adhere to the outer circumferential surface of the idler pulley, and as the pulley diameter increases, unreasonable tension is applied to the conveyor belt, resulting in loss of driving force and rotational stoppage of the conveyor belt. There is. For this reason, as shown in FIG. 9 of Japanese Patent Application Laid-Open No. 59-125825, there is a system in which a spiral body is used instead of the idler pulley, but the structure becomes complicated and the cost increases.

This idea was developed in view of these points, and is a soil lifting device using a multi-film covering device that has a simple structure and can prevent soil from adhering to the outer peripheral surface of the idler pulley around which the conveyor belt is wound. The purpose is to obtain equipment.

Means for Solving the Problem A conveyor belt 23 is provided to supply the soil tilled by the rotary tiller 5 to the soil hanging device 30, and the lower end of the conveyor belt 23 is wound around the idler pulley 20. The width of the idler pulley 20 is set narrower than the width of the conveyor belt 23, and the outer peripheral surface of the idler pulley 20 is formed into a curved convex shape, and the scraper 24 is provided close to the outer peripheral surface of the idler pulley 20.

Function The width dimension of the idler pulley 20 is
By setting the width smaller than the width dimension of the idler pulley 20 and forming the outer circumferential surface of the idler pulley 20 into a curved convex shape, it is difficult for soil to adhere to the outer circumferential surface of the idler pulley 20, and if soil adheres, the idler pulley 2
It is removed by a scraper 24 provided close to the outer circumferential surface of 0.

Embodiment An embodiment of this invention will be described based on the drawings. A working machine 4 supported by a two-point hitch 2 and raised and lowered by a lift arm 3 is connected to the rear of a body 1 of a tractor, which is a mobile agricultural machine. The working machine 4 is provided with a rotary tiller 5 located at the forefront and rotated by the driving force from the machine body 1, and an adjustment frame 6 extending in the front-rear direction above the rotary tiller 5. ing. A tool bar 7 having a horizontal axis is connected to the rear end of the adjustment frame 6, and the tool bar 7 includes a plurality of ridge shapers 8, 9 and a compression wheel 10 for compressing the upper surface of the shaped ridge. is toolbar 7
It is installed so that its position can be adjusted freely along the axial direction of the
A ridge shaping device 11 is constituted by the tool bar 7, the ridge shaping devices 8 and 9, and the compression wheel 10.

Further, a stay 12 is fixed to the rear end of the adjustment frame 6, a support 13 is fixed to the stay 12 in an upwardly tilted state, and a tilling shaft of the rotary tiller 5 is fixed to the upper end of the support 13. A drive pulley (not shown) is held, which is rotated by a driving force from a drive pulley (not shown). A bolt 14 and a nut 15 are attached to the lower end of the support 13 extending between the rotary tiller 5 and the ridge shaping device 11.
The holding stay 16 is fixed by this. The holding stay 16 has a bearing 17 and a cylinder 1.
8 and the idler pulley 20 via the clip 19.
is held rotatably around the axis of the bolt 21,
A conveyor belt 23 having a large number of protrusions 22 on its outer peripheral surface is wound between the idler pulley 20 and the drive pulley. The idler pulley 20
The width of the idler pulley 20 is set to be narrower than the width of the conveyor belt 23, and the outer peripheral surface of the idler pulley 20 is formed into a curved convex shape. The holding stay 1
6, a scraper 24 is integrally formed adjacent to a portion of the outer peripheral surface of the idler pulley 20 that is not in contact with the conveyor belt 23. Further, a pair of guide covers 25 covering both sides of the lower end of the conveyor belt 23 are fixed to the holding stay 16 by bolts 26.

The conveyor belt 23 is attached to the upper end of the support column 13.
A hopper 27 is fixed to temporarily store the soil transported by the hopper. At the lower end of the hopper 27, there is a shutter 28 that opens and closes at a predetermined timing as the machine body 1 advances, and a plurality of shutters that guide soil falling from inside the hopper 27 to a predetermined falling position as the shutter 28 opens. These hopper 27, shutter 28
The guide portion 29 constitutes a hanging device 30.

A stay 31 extending rearward is fixed to approximately the middle part of the pillar 13, and the stay 31 supports a multi-film 32 wound into a roll, and the multi-film 32 is pulled out to form ridges and ridges. A multi-film covering device 34 is attached that covers the grooves and further supports a treading wheel 33 that presses the multi-film 32 in the ridges and grooves.

In such a configuration, when the machine body 1 to which the working machine 4 is connected is driven, the rotary tiller 5 is rotated by the driving force from the machine body 1 to till the field, and a plurality of ridges are shaped by the ridge shaping device 11. The multi-film coating device 34 covers the ridges and furrows with the multi-film 32, and the lining device 30 applies soil to the multi-film 32 covering the ridges.

Here, the supply of soil to the hanging device 30 is performed by rotating the conveyor belt 23, and the conveyor belt 23 is wound between the drive pulley and the idler pulley 20 and rotates. The width dimension of the idler pulley 20 located at the lower end of the conveyor belt 23 is
The idler pulley 2 is set narrower than the width dimension of
It is difficult for soil to adhere to the outer peripheral surface of the 0, and even if it does, it is removed by the scraper 24 when it reaches a predetermined thickness. Therefore, excessive tension is prevented from being applied to the conveyor belt 23 due to soil thickly adhering to the outer peripheral surface of the idler pulley 20, and loss of driving force due to the action of excessive tension and damage to the conveyor belt 23 are prevented.
3 rotation stoppage is prevented. In addition, the conveyor belt 2
3, guide bars 25 are provided on both sides of the lower end of the conveyor belt 23 to prevent large stones from entering the inside of the conveyor belt 23.
This prevents the paper from being caught between the paper and the conveyor belt 23. In addition, the guide bar 25 prevents soil from entering the lower side of the conveyor belt 23, and the soil that has entered the lower side of the conveyor belt 23 is removed from the conveyor belt 23.
Loss of driving force caused by the downward pressing of the protrusion 22 of No. 3 is prevented. Furthermore, the conveyor belt 2
The guide cover 25 removes the soil that was not conveyed by 3.
The soil flows toward the ridge shaping section by the ridge shaping device 11, and a well-compacted ridge can be shaped with a sufficient amount of soil.

Effects of the invention In this invention, as mentioned above, the lower end of the conveyor belt that supplies soil to the soil hanging device is wound around the idler pulley, the width of the idler pulley is set narrower than the width of the conveyor belt, and the idler pulley is By forming the outer peripheral surface into a curved convex shape, it is possible to prevent soil from adhering to the outer peripheral surface of the idler pulley. As a result, the soil can be removed, thereby eliminating the possibility of excessive tension being applied to the conveyor belt due to soil adhering to the outer peripheral surface of the idler pulley, reducing the driving force caused by such excessive tension. This has effects such as being able to prevent loss of energy and stoppage of rotation of the conveyor belt.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view of the whole, Figure 2 is a perspective view of a part of it, Figure 3 is a side view of an enlarged part of it, and Figure 4 is an enlarged view of a part and a cross section. FIG. DESCRIPTION OF SYMBOLS 1... Machine body, 4... Working machine, 5... Rotary tilling part, 11... Ridge shaping device, 20... Idler pulley, 23... Conveyor belt, 24... Scraper, 30... Soil hanging device, 32 ...Multi-film, 34...Multi-film coating device.

Claims (1)

[Scope of utility model registration request] At the rear of the body of the mobile agricultural machine in the direction of travel, there is a rotary tiller, a ridge shaping device for shaping a plurality of ridges, a multifilm coating device for covering the ridges and ridges with a mulch film, and a mulch film that coats the ridges and grooves with soil. Connect a work machine equipped with a hanging device,
A conveyor belt for supplying the soil tilled by the rotary tiller to the soil hanging device is provided on the work machine, and the lower end of the conveyor belt is positioned between the rotary tiller and the ridge shaping device. The lower end of the conveyor belt is wound around an idler pulley, the width of the idler pulley is set narrower than the width of the conveyor belt, and the outer circumferential surface of the idler pulley is formed into a curved convex shape. A soil lifting device for a multi-film covering device, characterized in that a scraper is provided in close proximity to the soil lifting device.