JPS6325972Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention raises and lowers the reaping section, which is installed at the front of the machine so that it can freely rotate in the vertical direction, using a hydraulic sill interposed between the main machine and the reaping section. The present invention relates to a combine harvester configured to operate, and particularly to an improvement in the structure for mounting the reaping section on the combine harvester.

(B) Prior art In the above-mentioned combine harvester, the reaping section, which is equipped with a complicated system of a stalk culm pulling device, a cutting blade mechanism, a stalk culm transport mechanism, and a transmission mechanism for these, is equipped with a threshing device. Since it is located close to the front of the machine, when the reaping section is installed in a position where it can be raised and lowered, various transmission mechanisms installed between the back of the reaping section and the front of the threshing device, the front of the threshing device, Furthermore, there is not enough work space to maintain, inspect, and clean the various mechanisms of the reaping section, making the work extremely difficult.

For this reason, some conventional models have been improved to make it easier to remove the mounting support that rotatably supports the reaping section on the machine side. Some models are designed to reveal the work execution space (for example, Jikosho
40-15317).

(c) Problems to be solved by the invention By the way, in the above-mentioned method, although the rotational connection part (mounting support part) between the reaping part and this machine is easily removed, the actual removal work is difficult. In this case, the engaging member on the reaping unit side must be connected to the engaging member on the machine side by manually lifting the reaping unit, which is a heavy object equipped with many mechanisms, or by pulling and pushing it. However, since the reaping section has a structure that can be detached from the reaping section, and it is necessary to move the heavy object manually, the reaping section cannot be detached by one person.

SUMMARY OF THE INVENTION Accordingly, the present invention provides an improved structure for attaching the reaping section of a combine harvester, which eliminates the above-mentioned difficulties and makes it substantially easier to remove the reaping section from the machine.

(d) Means for solving the problem That is, in the present invention, the vertically rotating fulcrum body 3 on the side of the reaping section 1 is attached to the support body 4 on the side of the machine 2 in a vertically movable and removable manner. 1 and the main machine 2, a hydraulic cylinder 6 is interposed at another location between the hydraulic cylinder 6 and the main machine 2 to raise and lower the reaping section around the lifting and rotating fulcrum 3. , the reaping part mounting structure of a combine harvester is configured so that it can be attached to a mounting position appropriately spaced from the lifting/lowering rotational fulcrum body 3 and a mounting position at or near the lifting/lowering rotational fulcrum body 3.

(e) Operation According to the cutting unit mounting structure of the present invention, the hydraulic cylinder 6 which is connected to the cutting unit side at an attachment position appropriately spaced from the lifting and rotating fulcrum 3 in order to raise and lower the cutting unit 1 is left attached to the machine 2 side, and only the cutting unit side connecting part 8 is temporarily removed from the cutting unit. The cutting unit side connecting part 8 is then connected to the cutting unit at the lifting and rotating fulcrum 3 or an attachment position close to it, and the hydraulic cylinder 6 is then extended, and the lifting and rotating fulcrum 3 is forcibly detached from the support 4 by the operating force. Therefore, unlike conventional devices, the actual removal of the lifting and rotating fulcrum 3 from the support 4 is performed by utilizing power, which makes it possible to significantly reduce the labor required to create a work space for maintenance, inspection, cleaning, etc., compared to conventional devices, and can be easily performed with less burden on the worker.Although the lifting and rotating fulcrum 3 of the cutting unit 1 is removed from the main machine 2 by power, the hydraulic cylinder 6 for raising and lowering the cutting unit is utilized, which makes the structure simple and does not require any special mechanism.

In addition, since only the reaping section side connection section 8 of the hydraulic cylinder 6 is connected and detached, the time required for attaching and detaching the reaping section is further reduced, and even when the reaping section 1 is completely detached from the machine 2 side. Since the hydraulic cylinder 6 remains in the machine side in an operable state, if necessary, it can be used to operate other things while the reaping section is detached, and accidents involving the hydraulic cylinder losing powder are eliminated. .

(F) Embodiments Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view showing the main parts of a combine harvester according to an embodiment of the present invention.As is well known, the reaping section 1 includes a frame 5, a stem culm pulling mechanism, a cutting blade mechanism,
It is equipped with a stem culm transport mechanism, etc.

An elevating and rotating fulcrum body 3 is installed at the rear upper part of the frame body 5 in the reaping section 1.
is removably supported and attached to a support body 4 installed on the front part of the machine 2, so that the entire reaping part 1 is vertically rotated about the lifting and rotating fulcrum body 3 with respect to the machine 2 side. It is made to be able to rotate.

The machine 2 is provided with a structure that allows the base end of the hydraulic cylinder 6 to be rotated at least in the vertical direction at an appropriate lower portion of the machine 2 than the portion where the lifting and lowering rotation fulcrum body 3 is rotatably engaged with the support body 4. A reaping part side connecting part 8 which is connected and fixed and installed at the tip of the hydraulic cylinder 6.
is removably joined to the frame body 5 at a position appropriately spaced downward from the vertically rotating fulcrum body 3 (an attachment position for vertically moving the reaping section), and the reaping section 1 is attached to the frame body 5 by the telescopic operation of the hydraulic cylinder 6. can be moved up and down around the lifting and lowering rotation fulcrum body 3. Moreover, the reaping part side connecting part 8 at the tip of the hydraulic cylinder 6 is
The upper position of the frame 5 including the vertically rotating fulcrum body 3 (the mounting position where the vertically rotating fulcrum body is moved away from the support body)
It is constructed so that it can be reattached to the support member 4, and when the hydraulic cylinder 6 is extended and operated at the same position, the elevating and lowering rotation fulcrum body 3 is detached from the support member 4.

The lifting and rotating fulcrum body 3 of the embodiment is formed as a horizontally lateral connecting shaft cylinder, and the support body 4 has a U-shaped receiving groove that opens upward and a stopper 11 that closes and opens the upper end thereof. A bearing is formed in the metal. In addition, the reaping section side connection section 8 of the hydraulic cylinder 6 in the embodiment is formed as a receiver having a U-shaped cross section, and in the operating position for moving the reaping section up and down, the frame body 5
By making the pin 10 inserted through the receiving pipe 9 welded to the U-shaped hole common to both walls, the pin 10 is fixed to the reaping part 1 side, and the lifting and lowering rotation fulcrum body is detached from the support body. In this position, the U-shaped portion is fitted into and connected to the connecting shaft cylinder which is the pivoting fulcrum for lifting and lowering.

In the reaping part mounting structure of the embodiment, the reaping part 1
The vertical rotation fulcrum body 3 on the side is fitted into a U-shaped receiving groove in the support body 4 on the side of the machine 2, and the upper end of the U-shaped receiving groove is closed by a stopper 11, and further,
The reaping section side connecting section 8 of the hydraulic cylinder 6 is fixedly connected to the frame 5 at the mounting position where the reaping section is moved up and down, so that the reaping section 1 is attached to the machine 2 so as to be rotatable up and down. The reaping section 1 is moved up and down by the expansion and contraction operation of the hydraulic cylinder 6 in the same way as in the known system.

Next, when it is necessary to separate the reaping section 1 from the machine 2, the U-shaped receiving groove is unblocked by the stopper 11, and the reaping section side connection section 8 of the hydraulic cylinder 6 is temporarily removed from the frame 5. It is fitted into and joined to the lifting/lowering rotation fulcrum body 3 in the frame body 5. When the hydraulic cylinder 6 is operated to extend, the hydraulic cylinder 6 extends.
However, by pushing up the lifting/lowering rotation fulcrum body 3 upward as shown by the dashed line in FIG. 1, the reaping section 1 can be easily detached from the main machine 2 using power. be.

In addition, when setting the reaping part 1 on the machine 2, contrary to the above, lift the vertically rotating fulcrum body 3 to the required height with the hydraulic cylinder 6, move the machine 2 side, and then set the vertically rotating fulcrum body 3 on the machine 2. When the hydraulic cylinder 6 is retracted so as to face the upper part of the support body 4, the vertically rotating fulcrum body 3 is lowered and easily fitted into the support body 4.

After the lifting and lowering rotation fulcrum body 3 has been installed, the reaping unit side connecting portion 8 of the hydraulic cylinder 6 is joined and fixed to the frame body 5 at the mounting position where the reaping unit is moved up and down. 1 can be set in the machine 2 so that it can be moved up and down.

(g) Effect of the invention As explained above, this invention
A vertically rotating fulcrum body 3, which is attached to the machine 2 so as to be rotatable in the vertical direction, is detachably attached to the support 4 on the machine 2 side, and a hydraulic pressure interposed between the reaping section 1 and the machine 2 is provided. The reaping part mounting structure is such that the reaping part side connecting part 8 of the cylinder 6 can be connected to either a mounting position appropriately spaced from the rotational fulcrum body 3 or a mounting position on or near the vertical rotational fulcrum body 3. Therefore, when separating the reaping section 1 from the machine 2, the elevating and rotating fulcrum body 3 can be substantially removed from the support body 4 by utilizing the power of the hydraulic cylinder 6 for elevating the reaping section. As a result, the work space revealing movements when performing maintenance inspections and cleaning are much more labor-saving than conventional ones, and can be done easily with less burden on the worker. Since the hydraulic cylinder 6 for raising and lowering the reaping section is used without being equipped with an operating mechanism, there is an advantage that the entire structure is not complicated and the structure is simple.

Furthermore, only the connecting portion 8 on the reaping section side of the hydraulic cylinder 6 is connected and detached, and even if the reaping section 1 is completely detached from the machine 2 side, the hydraulic cylinder 6 will remain in an operable state and the machine will not operate. Since it remains on the side, if necessary, it can be used to move other items with the reaping section detached, and accidents such as loss of hydraulic cylinder powder will not occur.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a schematic side view of the main parts of a combine harvester with the mounting structure of the present invention, and Fig. 2 shows a hydraulic cylinder joint stop at a mounting position distant from the lifting and rotating fulcrum body. FIG. 3 is an enlarged front view and a side view showing the mounted state, and FIG. 3 is a schematic plan view showing the state in which the elevating and rotating fulcrum body is mounted on the machine side. DESCRIPTION OF SYMBOLS 1... Reaping part, 2... This machine, 3... Lifting rotation fulcrum body, 4... Support body, 6... Hydraulic cylinder, 8...
...Reaping part side connection part.

Claims (1)

[Scope of utility model registration request] The vertically rotating fulcrum body 3 on the side of the reaping section 1 is attached to the support body 4 on the side of the machine 2 so as to be movable up and down and detachable, and the vertically rotating fulcrum body 3 on the side of the reaping section 1 and the main machine 2 is attached to another location between the reaping section 1 and the machine 2.
In a combine harvester equipped with a hydraulic cylinder 6 that moves the reaping section up and down around the center, a connecting part 8 of the hydraulic cylinder 6 to the reaping section side is appropriately spaced apart from the rotation fulcrum body 3; A reaping part attachment structure for a combine harvester, characterized in that it can be reattached to a lifting and lowering rotation fulcrum body 3 or a mounting position close to it.