JPS603724Y2 - Membrane covering device for multiple ridges - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a membrane covering device for multiple ridges, and is capable of simultaneously covering a plurality of adjacent ridges with a membrane in a field where the spacing between the ridges is small. In addition, the conditions such as the degree of tension on the membrane body at the time of covering are made approximately equal, so that the ridges can be covered uniformly without variation among the ridges.

Conventional technology and problems A pair of left and right tread wheels,
In a membrane covering device that covers ridges using soil covering members, etc., multiple sets of membrane covering units are installed in the left and right direction to protect from membrane rolls, tread wheels, soil covering members, etc. Utility Model Publication No. 51-28268 has already disclosed a structure in which the ridges can be covered with membranes at the same time.

However, this is because multiple units are provided so that each membrane roll is located at the same height and at the same position in the front-rear direction, that is, on the same axis in the left-right direction. Therefore, as long as multiple simultaneous coverings of membranes are carried out, the planted area of crops per unit area of the field will inevitably decrease. There were drawbacks.

A covering device that can overcome these drawbacks is described in U.S. Pat. No. 3,139,847.

That is, in this case, the units are disposed close to each other so that the ends of adjacent membrane rolls overlap each other.

In this way, the distance between the ridges can be reduced, and the area for planting crops can be increased.

However, this covering device shifts the positions of adjacent film rolls in the vertical direction so that the ends of the film rolls overlap in the vertical direction, and then feeds the film downward from each film roll. Because of this, the distance of the membrane from the membrane roll to the treading shaft differs between units, resulting in variations in the degree of tension acting on the membrane, making it impossible to cover under uniform conditions. .

In particular, when the membrane roll is shifted vertically, there will be a considerable difference in the wind pressure that the membrane receives when moving forward, and therefore, in addition to the variation in the tension inherent in the device, there will also be differences due to the wind force, wind direction, etc. during work. Because of the large influence, there were cases where there were large differences in the covering state even though they were covered at the same time.

In addition, in order to solve this problem, in addition to a guide means that guides the membrane to match the ridge shape, a guide means is provided between the membrane roll and the treading shaft to adjust the tension level of the membrane. It is necessary to equip a means for absorbing or preventing it and equalizing the conditions of each unit, which causes the structure to become complicated.

Purpose and Structure of the Invention In view of the problems with conventional covering devices, the present invention is designed to improve
It is an object of the present invention to enable simultaneous covering of multiple membrane bodies, to make conditions such as tension on the membrane bodies approximately equal at the time, and to enable uniform covering, and to make these possible with an extremely simple configuration. As a specific means for achieving this purpose, the membrane rolls A and B are supported in a manner that they can be freely fed out around the axis in the left and right direction, and the guide means 29 is fed out from the membrane rolls A and B. A membrane A1 that extends over E and covers E.
．． A pair of left and right treading shafts 33 which are ridged on both the left and right ends of B□ and which are stepped on on both sides of E, and a membrane body A1 at the rear of each treading wheel 33 are provided.
．． In a membrane covering device for multiple ridges, which includes a plurality of membrane covering units provided in the left and right direction, each of which has a pair of soil covering members 34 that cover both left and right ends of Bi, the membrane rolls of each adjacent unit are A.

The membrane rolls A,
B are provided at approximately the same height position and shifted in the front-rear direction, and the stepping shafts 33 of each adjacent unit are connected to the membrane bodies A1.B from the membrane rolls A and B to the stepping shafts 33. B□
The film rolls A and B are disposed at positions shifted in the front-rear direction corresponding to the front-rear positions of the membrane rolls A and B so that the length of the feeding distance L□ and the length of the rolls are approximately the same.

EXAMPLES The present invention will be described in detail with reference to the illustrated embodiments.
In the figures, 1 is a tractor body, 2 is a tilling device, and this is connected to the tractor body 1 via a three-point linkage device 3.
It is attached to the rear of the vehicle so that it can be raised and lowered freely.

The tilling device 2 includes a machine frame 4, a tilling section 5, a tilling cover 6, etc., and a support frame 9 for towing the ridge forming device 7, covering device 8, etc. is installed rearwardly extending on the machine frame 4. It is also said to be able to be raised and lowered freely.

Reference numeral 10 denotes a horizontal tool bar, which is fastened and held to the support frame 9 via a support 11, and the support 11 is slidably fixed to the support frame 9 and the tool bar 10 is slidably fixed to the support 11 by bolts 12 and 13, respectively. It is said to be free.

The ridge forming device 7 is a dual-use device equipped with two ridge formers 14 arranged close to each other on the left and right, and each of the ridge formers 14 is composed of a forming plate 16 having a tunnel-shaped opening 15. ing.

Note that the ridge former 14 is covered by a rear cover 6a of the tillage cover 6.

Reference numeral 17 denotes a groove cutting member, which is supported by fixed brackets 18 on both sides of the rear lower part of each ridge former 14.

That is, as shown in FIG. 4, the groove cutting member 17 is pivotally supported on the bracket 18 via the horizontal shaft 20 so as to be able to move up and down.
It is biased by a bomb 21 so that the rear side touches the ground.

Further, this groove cutting member 17 has a groove cutting portion 1 on the rear side thereof.
7a is inclined obliquely toward the outside like a one-sided earthen pot, and is configured to guide the cut soil in the grooves cut and formed on both sides of the ridge and E outward.

Gauge wheels 22 are held at both ends of the tool bar 10 via support brackets 23, and the pair of gauge wheels 22 are located on both sides of the ridge forming device 7.

The membrane covering device 8 includes membrane rolls A and B supported by roll support means 24 so as to be freely retractable around the axis in the left and right direction.
The guide means 29 is fed out from the film rolls A and B.
A membrane body A1. A pair of left and right stepping shafts 33 which are ridged on both the left and right ends of B□ and stepped on on both sides of E, and a membrane body A1. Two sets of membrane covering units each having a pair of right and left soil covering members 34 for covering both left and right end portions of B1 with soil are provided on the left and right sides.

The roll support means 24 is a pair of left and right rolls that support the film rolls A and B at both left and right ends, and the tool bar 1
Each roll support means 24 includes a roll holding portion 26 and a roll support rod 27.

The roll support means 24 of each unit is arranged so that the membrane rolls A and B have the following positional relationship.

That is, the membrane rolls A and B of each unit are positioned in the front-rear direction at approximately the same height position so that their ends overlap by dimension C in the front-rear direction without interfering with each other at approximately the same height position. They are placed offset.

In this case, the dimension C is such that when the membrane bodies A and B1 are ridged and E is covered, the soil covering member 34 can pass between the adjacent ridges and the end of the membrane body Aft B1 of E. The settings should be set to such an extent that there is an interval of .

The film rolls A and B are obtained by winding film bodies A□ and B1 such as polyethylene films and sheets into rolls.

Note that the membrane rolls A and B can be exchanged as before by operating the operating lever 28.

The guide means 29 is located between the membrane rolls A and B and the treading wheel 33, and is located between the membrane rolls A1 and 33. It guides the Bl along the ridge shape, and is attached to the tool bar 10 via the support rod 30, and is separated from the front guide rod 31 and the rear guide rod 32, which are arranged to be shifted from each other in the front and rear and up and down directions. There is.

These guide rods 31 and 32 are both arch-shaped, and the front guide rod 31 is located near the rear of and above the membrane rolls A and B, and the rear guide rod 32 is located above the membrane rolls A and B.
It is located below and ridged, straddling E and extending backwards.

The mutual guide means 29 for each unit are arranged at approximately the same height, and are also provided at positions shifted back and forth by the amount of deviation corresponding to the front and rear positions of the film rolls A and B. There is.

The treading wheel 33 is, for example, a membrane body A1. The tread wheel 33 is made of a sponge wheel or the like with a sponge or the like attached to the outer periphery of the wheel so as not to damage the wheel B1, and this tread wheel 33 is disposed behind the inner end of the rear guide rod 32.

The treading wheel 33 of each unit includes the membrane body A
The rollers are provided so as to be shifted in the front-rear direction corresponding to the front-rear position of the membrane rolls A and B so that the lengths Ll and L2 of the feeding distances □ are approximately the same length.

The soil covering member 34 is disc-shaped, and is arranged behind each treading wheel 33 and slightly outward.As shown in FIG. Body A1. B
Both left and right ends of 1 are covered with soil a.

The treading wheel 33 and the soil covering member 34 are each attached to a support rod 37, and the support rod 37 is supported by a support rod 35 extending rearward from the tool bar 10 via a bending means 36 having a bending portion 36A. and is biased by the ammunition 38 in the direction of ground contact toward the stopper 39.

The center tread wheel 33 and the earth covering member 34 are attached to both sides of one support rod 37, and are displaced in the front-rear direction.

Note that the soil covering member 34 may be shoe-shaped.

Next, the operation of the above configuration will be explained.

At the start of work, the entire device on the rear side of the tractor body 1 is lowered and grounded.

Incidentally, the treading wheel 33 and the soil covering member 34 are separated above the ground by bending the support rod 37 upward against the ammunition 38.

When the tractor body 1 is moved forward while driving the rotary device 2, two rows of ridges E matching the shape of the opening 15 of the ridge shaper 14 are formed in the tilled soil.

Therefore, the tread wheel 33 and the soil covering member 34 attached to the support rod 37 are lowered, but at this time, both ends of the membrane bodies A It is stepped on by the tread wheels 33 on both sides, and then moved forward to proceed with the work.

Then, the membrane body A1. Since B□ is stepped on by the treading wheel 33, it is sequentially fed out from the membrane rolls A and B as it progresses, and is guided along the ridge shape via the front and rear guide rods 31, 32 of the guide means 29. After being trampled by the treading wheel 33, the soil cut by the groove cutting member 17 is placed on the membrane body A1.E by the soil covering member 34. Cover both ends of B□ with soil.

Therefore, in the state shown in FIG. 5, the membrane body A1 is
vB□ can be covered, and both ends can be surely covered with soil a.

In this case, the membrane rolls A and B of the two units are placed at approximately the same height so that the ends of the membrane rolls A and B overlap in the front-rear direction by dimension C at approximately the same height. Since the positions are shifted in the front-back direction, the overall width becomes smaller, and even if the distance between adjacent ridges E is made that much smaller, it is possible to cover two rows at the same time. By making it smaller, the area for planting crops per unit area can be increased.

Moreover, since the lengths Ll and L2 of the membrane rolls from each membrane roll A and B to the treading wheel 33 are approximately the same for the two units, the width of the two units is small. First, each membrane body Al? The tension level of Bl can be made almost equal in both series, and the membrane body A1. B□ can be covered.

In addition, in particular, the tread rolls A and B are shifted in the front-rear direction at approximately the same height, and there is no need for the membrane rolls A and B to protrude upward more than necessary. Also when performing work, the membrane body A□.

It is possible to reduce the area where B1 receives wind pressure and to make it approximately equal in two.

Therefore, the membrane body A1 due to wind pressure etc. There is no small pulsation of B1, and variations in the covering state between the two sets due to external factors such as wind can be prevented.

Effects of the invention According to the invention, the membrane rolls of adjacent units are arranged so that the ends of the membrane rolls of adjacent units overlap each other in the front-rear direction at approximately the same height position without interfering with each other. Since the membrane rolls of each unit are arranged at approximately the same height position and shifted in the front-rear direction, the overall width in the left-right direction is As a result, the distance between the ridges to be covered with the membrane can be reduced, and therefore, the area for planting crops per unit area can be increased.

In addition, the treading wheels of each unit are moved in the front-rear direction corresponding to the front-rear position of each membrane roll, so that the length of the membrane feeding distance from the membrane roll to the treading wheel is approximately the same for each unit. Since the positions are shifted, the tension of the membrane body can be made approximately equal for each unit, and even though the membrane body rolls are displaced from the front and back, it is possible to cover them simultaneously in an approximately uniform state. .

Moreover, the positional deviation of the membrane roll is in the front and back direction, and is approximately the same.
Since it is located at a high height, there is no need to raise one of the membrane rolls higher than necessary, unlike in the case where it is shifted vertically, and the membrane body is supported between the membrane roll and the treading wheel. External factors such as wind pressure can be made approximately the same for each unit, and the range to which they are affected can be made smaller.

Therefore, there is no pulsation of the membrane due to wind pressure, and uniform and smooth covering is possible in this respect as well.

Furthermore, from a structural point of view, the membrane roll and treading wheel of each unit are shifted in position corresponding to the front and back, so the design is easy, a large number of parts can be used, and the structure is simple. There are advantages to implementing it.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the whole, Fig. 2 is a plan view of the same, Fig. 3 is a rear view of the same, Fig. 4 is a perspective view of a groove cutting member, and Fig. 5 is a perspective view of the full precept. 8...Membrane covering device, A, B...Membrane roll, A1. A2...Membrane body, Lxt Ll
...Feeding distance length, 24...Roll support means, 29...Guiding means, 33...
Treading wheel, 34... Soil covering member, D, E...
...Round.

Claims (1)

[Scope of utility model registration request] Membrane rolls A and B are supported so as to be freely payable around the axis in the left and right direction, and a membrane body A□ is paid out from the film rolls A and B, is ridged via the guide means 29, and is placed on E. A pair of left and right treading wheels 33 that ridge both left and right ends of a and tread on both sides of E, and a pair of left and right soil coverings that cover both left and right ends of the membrane bodies A□ and B1 behind each of the treading wheels 33. In a membrane covering device for multiple ridges in which a plurality of membrane covering units each having a member 34 are provided in the left and right direction, the ends of the membrane rolls A and B of each adjacent unit are approximately the same. - The membrane rolls A and B of each adjacent unit are provided with approximately the same position so that they overlap in the front and rear direction without interfering with each other at the height position. Mutual treading wheel 33
, the membrane body Al from the membrane body rolls A and B to the treading wheel 33
- The multiple rolls are provided so as to be shifted in the front-rear direction corresponding to the front-rear positions of the membrane rolls A and B so that the lengths Ll and Ll of the feeding distances of B1 are approximately the same length. Membrane covering device for ridges.