JPH0568208B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of wrapping a film around a bale of ground-dried grass compressed into a cylinder by a heberer, and an improvement of an apparatus for carrying out the method. .

[Prior art] Lactic acid bacteria fermentation of land-dried grass produces highly nutritious feed, but feed silos are very expensive, so grass bales are gathered into a cylinder shape using Hebera and wrapped in a synthetic resin film. , it is often placed in a simple storage facility and fermented. To wrap a grass bale with a film, place the grass bale on a turntable with a belt on the top surface so that its axis is horizontal, and then rewind the film roll onto a support shaft parallel to the rotation axis of the turntable. The end of the film pulled out from the film roll is fixed to the grass bale, and the turntable is rotated around the vertical axis and the belt is run to rotate the roll on it around the horizontal axis. It is known to wrap a grass bale by wrapping the film around the end face of the bale in the diametrical direction. or,
Another method is to use a turntable with multiple thorns protruding horizontally from a vertical table surface. At the same time, the bale is lifted up and rotated about a horizontal axis, the film is wrapped around the circumference of the grass bale, and the film is manually attached to the end face of the end covering.

[Problems to be solved by the invention] The method of placing a grass bale placed on the ground on a turntable requires two or more people or a special lifter, and the method requires heavy and large grass. Since the bale is rotated to wrap a strip of film pulled out by a film roll, there is a problem in that the wrapping speed is slow and work efficiency cannot be improved. In addition, the method of sticking a grass bale through it, lifting it with a vertical turntable, and then rotating it requires a complicated and expensive device mechanism.Furthermore, the heavy and large grass bale has to be rotated and a single strip of film is wrapped around it. As expected, the problem was that the lap speed was slow and work efficiency was low.

The present invention has been made to solve the above problems, and its purpose is to provide a method that allows one person to quickly wrap a bale of grass with a film, and an apparatus for carrying out the method. It is in.

[Means for solving the problem] In order to achieve the above object, the method of the present invention is characterized in that a cylindrical grass bale placed on the ground is covered with a bottomless frame, and the grass bale is placed on the frame. An inverted U-shaped arm that rotates around the periphery is suspended, a film roll is attached to both hanging parts of the arm so that it can be unwound freely, the film pulled out from the film roll is fixed to the frame, and the guide roll provided on the frame is used to move the film to the pasture. While rolling the bale, the arm is rotated to wrap two strips of film pulled out from two film rolls around the grass bale.

It is desirable to attach a pair of stretch rolls to the hanging part of the arm and wrap the film in tension. It is also desirable to provide a cutting lever on the frame so that the tip of the film is tied to the cutting lever when winding starts, and when winding is finished the film is cut from the grass bale with the cutting lever and the cut end is gripped. .

Further, the features of the device of the present invention include a frame without a bottom surface and a rear surface that can be connected to a tractor, a pair of wheels provided on a beam on the lower side of the frame, and a pair of wheels provided on a beam on the lower side of the frame. A guide roll that comes into contact with the grass bale, and an inverted U-shaped arm that is rotatably installed on the upper beam of the frame.
It is equipped with a film roll attached to both hanging parts of the arm, a cutting lever provided on both sides of the lower beam so that it can be raised and lowered, and a hydraulic device that drives the arm and the cutting lever. It is desirable to provide a door on the rear surface of the frame that is opened and closed by a hydraulic device, and that the door also be provided with a guide roll that contacts the grass bale.

[Operation] First, the tip of the film pulled out from the film rolls attached to both hanging parts of the arm is fixed to the cutting lever, and when the frame is connected to the tractor and the tractor is driven backward, the grass bale placed on the ground is cut from the rear side. It can be placed inside the frame. Next, when the arm is rotated by a hydraulic device while the hay bale is rolled by the guide roll, the two strands of film unwound from the two film rolls are wound horizontally around the rolling hay bale, so that the film is rolled into the hay bale. It winds around the axis of the bale, shifting slightly, and completely wraps the bale of grass. When the bale is wrapped, the tractor stops moving backwards and the arm rotates, and the cutting lever is raised. The cutting lever cuts the film between the film roll and the grass bale, and the end on the film roll side is cut off by the cutting lever. Hooked on the cutting lever. The grass bale then moves out of the frame as the tractor is moved forward. The lapping operation is considerably faster since all of these operations are performed by one operator who remains on the tractor except for securing the first film to the cutting lever.

If a door that can be opened and closed by hydraulic pressure is attached to the rear of the frame, and a guide roll that contacts the grass bale is attached to the door, the grass bale can be wrapped while the tractor is moving forward.

[Example] The apparatus of the present invention will be described based on an example shown in the drawings.

As shown in FIGS. 1 and 2, the frame consists of a rectangular upper beam 11, a U-shaped lower beam 12 and a vertical beam 13 between the upper and lower beams.

Wheels 14 are attached to the left and right sides of the lower beam 12, and a three-point hitch 15 is attached to the front surface. A front guide roll 24 is rotatably supported on the lower beam 12. A pair of cutting levers 25 are mounted on the lower beam 12 via brackets 26 so as to be erectable. The tip of the rod of a cutting hydraulic cylinder 27 is fixed near the base of the cutting lever 25, and the main body of the cutting cylinder 27 is fixed to the lower beam 12 with a clevis. Therefore, as the cutting cylinder 27 moves back and forth, the cutting lever 25 rises and falls as shown by arrow A in FIG. As shown in FIG. 4, a set of cutting levers 25 and cylinders for raising and lowering the levers are arranged symmetrically with respect to the center of the frame.

A door 30 is attached to the rear surface of the frame 10,
The door is pivoted to a bracket 28 fixed to the upper beam 11. The tip of the rod of the door cylinder 29 is fixed to the upper end of the left side of the door 30 by a shaft, and is fixed to the upper beam 11 of the main body of the door cylinder by a clevis. Therefore, the door hydraulic cylinder 29
As the door 30 moves forward and backward, the door 30 opens and closes as shown by arrow B in FIG. Bracket 3 from the bottom end of door 30
1 extends at right angles, and a rear guide roll 32 is rotatably supported at the tip of the bracket.
Its guide roll 32 goes inside the lower beam 12.

Across the upper beam 11 is a central beam 33, in the center of which a hydraulic motor 34 is mounted. The center of an inverted U-shaped arm 35 is fixed to the output shaft of a hydraulic motor 34. A roll support stand 36 is fixed to both hanging parts of the arm 35, and a pair of stretch rolls 37 and a film roll support shaft 3 are attached to the roll support stand.
8 is installed. The film roll 40 is rotatably fitted onto the film roll support shaft 38, and the film 41 pulled out from the film roll is first passed between a pair of stretch rolls 37.
The leading end of the film 41 is then tied to the leading end of the cutting lever 25. The cutting lever 25 is provided with a plurality of hooks 19.

As shown in FIG. 2, when the rod of the door hydraulic cylinder 29 is retracted, the door 30 is raised and opened, so that the grass bale 20 can be inserted into the frame 10. When the grass bale 20 is placed inside the frame 10 and the door 30 is lowered and closed, the grass bale 2
0 is sandwiched between the front and rear guide rolls 24, 32, so it moves forward or backward while rolling together with the frame 10.

As shown by arrow C in FIG.
When the arm 35 is rotated, the film 41 is rewound from the two film rolls 40.
The grass bale 20 is wrapped around the grass bale 20 while being stretched by a stretch roll 37. Although not shown, for safety reasons, an arm 35 is installed around the frame 10.
It is desirable to provide a net-like cover that covers the rotation range of the motor.

Next, the method of the present invention will be explained.

As shown in FIG. 3, a hitch 15 is connected to a three-point link of a tractor 50. Also, Figures 1 and 2
The cutting hydraulic cylinder 27, the door hydraulic cylinder 29, and the hydraulic motor 34 shown in the figure are connected to the hydraulic power source of the tractor, and each operating lever is also attached to the cabin of the tractor. As shown in FIG. 1, the leading end of the film 41 is pulled out from the film roll 40, passed through the stretch roll 37, and then tied to the cutting lever 25. Close the grass bale placed on the ground and operate the door cylinder operating lever to open the door 30.
The door 30 is opened to move the tractor backwards, and after putting the grass bale 20 into the frame 10 as shown in FIG. 3, the door 30 is lowered and closed. Next, the tractor 50 is moved backward (or forward) as shown by arrow D in FIG. 3, and the grass bale 20 between the front and rear guide rolls 24, 32 is rolled in the direction of arrow E. At the same time, the operating lever of the hydraulic motor 34 is operated to rotate it in the direction of arrow G. Arm 3 with hydraulic motor 34
5 rotates, the film 41 is unwound from the film rolls 40 at both lower ends of the arm 35 and wound around the grass bale 20 while being stretched by the stretch rolls 37. Meanwhile, pasture bale 20
Since the film 41 rolls, the band of the film 41 overlaps and wraps the grass bale 20 while shifting its angle little by little around the axis of the grass bale. Lap's film is stacked in about 2 to 5 layers.

As shown in FIG. 4, two film rolls 40 rotate around the grass bale 20 as shown by arrow H, and two strips of film 41 unwound from the two films wrap the grass bale 20. The wrapping process is very quick. Although it depends on the number of film layers, the wrapping process usually takes about 20 seconds.

After wrapping the grass bale 20 with a desired number of layers of film 41, the operating lever of the cutting cylinder is operated to raise the cutting lever 25, and the film 41 between the wrap and the stretch roll 37 is cut. The starting end of the wrap that was cut by the lever 25 and tied to the tip of the cutting lever 25 comes off the cutting lever 25. The end of the film on the film roll 40 side is hooked onto the hook 19 of the cutting lever 25. Therefore, when the door 30 is raised by operating the operating lever of the door hydraulic cylinder and the tractor 50 is then moved forward, the wrapped grass bale 20 comes out of the frame 10. Another hay bale is then placed into the frame and wrapped, without the operator having to dismount the tractor at all since the end of the film is gripped by the cutting lever. In this way, all the lapping work is done by one worker while riding on the tractor, so the lapping work is extremely easy.

[Effects of the Invention] As described above, the method and device of the present invention differs from the conventional method in which a grass bale is placed on a turntable and wrapped with a strip of film. Since the grass bale is wrapped with a film attached to both lower ends of the inverted U-shaped arm, one worker can quickly wrap the grass bale while riding on the tractor, which is an advantage over conventional methods and devices. You can obtain excellent effects that could not be achieved with other methods.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view of an apparatus according to an embodiment of the present invention, FIGS. 3 and 4 are schematic diagrams showing the method of the present invention, and FIG.
A cross section along the line is shown in FIG. 4, and the top surface of the grass bale being wrapped in a film is shown. In the figure, reference numeral 10 is a frame, 11 is an upper beam, 12 is a lower beam, 14 is a wheel, 20 is a grass bale, 24 is a guide roll, 25 is a cutting lever, 27 is a hydraulic cylinder for the cutting lever, and 29 is for a door. Hydraulic cylinder, 30 is a door, 32 is a guide roll,
34 is a hydraulic motor, 35 is an arm, 37 is a stretch roll, 39 is a hanging portion, 40 is a film roll, and 41 is a film.

Claims (1)

[Claims] 1. A method of wrapping a cylindrical pasture bale by wrapping it with a film pulled out from a synthetic resin film roll, the method comprising wrapping a bottomless frame around the hay bale placed on the ground. Cover,
An inverted U-shaped arm that revolves around the grass bale is suspended from the frame, and the film roll is attached to both hanging parts of the arm so that it can be unwound,
The leading end of the film pulled out from the film roll is fixed to the frame, a guide roll in contact with the circumferential surface of the grass bale is attached to the frame, the frame is moved in the rolling direction of the grass bale, and the guide roll is fixed to the frame. A method for luffing a grass bale, comprising: rolling the grass bale through the grass bale, rotating the arm, and wrapping two strips of film unwound from the two film rolls around the grass bale. 2. The method for wrapping a grass bale according to claim 1, characterized in that the film pulled out from the film roll is passed between a pair of stretch rolls and wrapped around the grass bale while being stretched. 3 Attach a freely undulating cutting lever to the frame,
Claim 1: The tip of the film is locked to the lever at the start of winding, and the lever is raised to cut the film between the grass bale and the film roll at the end of winding.
How to wrap a grass bale as described in Section 1. 4. A frame that can be directly connected to a tractor and has no bottom or rear surface when viewed from the tractor side, a pair of wheels attached to a beam on the lower side of the frame, and a guide roll rotatably attached to the beam on the lower side of the frame. , an inverted U-shaped arm rotatably attached to the upper beam of the frame, a film roll attached to both hanging parts of the arm, and a film roll attached to the lower left and right beams so as to be movable up and down. A pasture bale wrapping device comprising: a cutting lever; and a hydraulic device connected to a hydraulic power source of the tractor to drive the arm and the cutting lever. 5. The grass bale wrapping device according to claim 4, characterized in that a pair of stretch rolls for stretching a film are provided on both hanging portions of the arm. 6. The grass bale wrapping device according to claim 4, wherein a door is provided on the rear surface of the frame and can be opened and closed by a hydraulic device, and a guide roll that contacts the grass bale is attached to the door.