JPS6228837Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a reaping section on a frame that can freely swing up and down around a first left and right horizontal axis using a fluid pressure cylinder, and connects the pivot member of the frame to its mounting bracket. In the uncoupled state, the cylinder is configured to be able to swing freely toward the front of the fuselage about a second horizontal horizontal axis below the first horizontal horizontal axis, and the cylinder is provided between the frame and the cylinder. A bending link mechanism that allows the pivot member to swing toward the front of the machine body about the second left and right horizontal axis in the extended state is pivotally connected, and the reaping section is connected to the machine body at the front of the machine body. This invention relates to a combine harvester that can be freely separated from the side.

In the above-mentioned combine harvester, the frame and its pivot member are artificially moved to the first and second left and right horizontal axes by a reaping section lifting cylinder in a state in which the pivot member is disconnected from the bracket. By swinging it around, a large space can be secured between the reaping section and the machine body for maintenance and inspection of the engine, transmission, etc. located inside the machine body near the rear of the reaping section. In addition, the entire structure is connected so that the reaping section can be assembled and connected to the machine body easily and quickly.

However, when pulling the reaping section toward the front of the machine, if the bending link mechanism that connects the entire section becomes stretched due to unexpected movement of the reaping section on a slope or uneven ground or due to manual operation, Due to the tensioning action of the link mechanism, there was a drawback that the work of assembling and connecting the reaping section to the machine body could not be carried out by one person.

In view of the above-mentioned circumstances, the present invention aims to eliminate the above-mentioned drawbacks by adding an extremely simple structure.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIG. 1, the combine harvester includes a crawler traveling device 1, a threshing device 2, etc. installed at the front of the traveling body, and a device 3 for pulling out multiple stalk culms planted in a field. The reaping unit 8 is connected and equipped with a reaping device 4 that cuts the base of the raised stalk culms, an auxiliary conveyance device 5 that merges the harvested stalk culms, a rear conveyance device 7 that conveys the merged stalk culms to the threshing feed chain 6, and the like. has been done.

As shown in FIG. 2, the reaping section 8 is pivotably supported around a first left and right horizontal axis Z by a shaft support member 10 fixed to the upper part of a bracket 9 provided on the traveling machine body. Lifting frame 11 that also serves as a transmission case
The other end of the hydraulic cylinder 12, which has one end attached to the traveling machine body, is connected to a bi-folding link mechanism 13 interposed between the elevating frame 11 and the traveling machine body. . Then, the reaping section 8 is
is configured to be driven up and down and oscillated with respect to the traveling aircraft body. Therefore, the reaping section 8 is operated downward to near the ground during reaping work in the field, and is operated upward when traveling on the headland or on the road within the field.

The reaping section 8 is separated from the traveling machine body and can be moved back and forth as described below.

That is, the lifting support part of the reaping part 8, that is, the shaft support member 10 is pivoted to the traveling machine body around the second left and right horizontal axis X, and can swing back and forth.
It is connected to the free end of a pivot member 14 that can be connected and fixed to the bracket 9 in a rearward swinging position, and by swinging back and forth this pivot member 14, the proper position relative to the traveling aircraft and its position can be adjusted. It is configured to be swing-guided over a position that is displaced forward.

Further, the end of the link mechanism 13 on the side of the lift frame is pivotally supported to the lift frame 11 so as to be swingable around the left and right horizontal axis Y, and is releasably bolted to the lift frame 11 in a posture along the lift frame 11. It is pivotally connected to a swinging link 15 that can swing back and forth,
By swinging the swinging link 15 rearward, flexibility in the front-back direction can be provided between the elevating frame 11 and the link mechanism 13.

Then, in a state in which the connection between the pivot support member 14 and the bracket 9 is released, the reaping section 8 is operated by extending the fluid pressure cylinder 12.
can be moved forward while its front end is touching the ground (see imaginary diagram in Figure 2), and furthermore, by releasing the fixation of the swing link 15, the reaping section 8 can be manually pulled forward and moved. By doing so, it is possible to move the robot further forward (see Fig. 3). In addition, in order to assemble the reaping section 8 to the traveling machine body again, first push the reaping section 8 backward, switch the swinging link 15 to a position along the elevating frame 11, fix it in this position, and in this state By shortening the hydraulic cylinder 12, the shaft supporting member 10 can be moved to an appropriate position relative to the traveling aircraft. In addition, 16 in the figure
is an auxiliary wheel detachably attached to the reaping section 8, and is provided to support the reaping section 8 on the ground during the above-mentioned back-and-forth movement operation.

Therefore, by moving the reaping section 8 forward as described above, as shown in FIG. Various devices such as a belt transmission mechanism that interlocks the output shaft 17a of the engine 17 and the input shaft 18 of the threshing device 2 and a belt transmission mechanism that interlocks the engine 17 and the input shaft 20 of the traveling transmission case 19 are provided. These inspections and adjustments can be carried out without being obstructed by the reaping section 8.

Reference numeral 21 in FIG. 3 is a belt that transmits the output from the transmission case 19 to the input pulley 22 provided at the base of the elevating frame 11, and as described above, when the reaping section 8 is moved forward, the belt is automatically activated. Therefore, the belt 21 can be easily replaced.

In the combine harvester having the above configuration, the reaping section 8
A mechanism 23 that restricts the waist bending link mechanism 13 from being fully extended in the maximum separation state with respect to the aircraft is connected to the pivot member 14 and the frame 11.
The mechanism is provided in between so as to prevent the buckling link mechanism 13 from appearing in a tensioned state when assembling and connecting the reaping section 8 to the machine body, so that the assembling and connecting work can be performed by one person. There is.

As shown in FIG. 4, the regulating mechanism 23 is constructed by attaching a bending link 24, which is a joint between two links 24a and 24b, and one link 24.
a long hole a in the longitudinal direction of the link on one end side of a, and
A pin hole b is bored on the other end side of the other link 24b, and this bent link 24 is inserted into the holes a and b.
The frame 11 and the pivot support member 14 are pivotally connected to each other via pins 25, 25 having transverse axes passing through the frame 11, and the bending link 24 is configured to be fully extended when the bending link mechanism 13 is in the fully extended state. Then, the length of the regulating bending link 24 is set, so that when the reaping part 8 approaches the machine body when the reaping part 8 is assembled and connected to the machine body, the waist bending link 24 in the fully extended state is inserted into the elongated hole a.
It is made to bend under its own weight due to the action of

Incidentally, instead of bending the bending link 24 under its own weight through the elongated hole a, a spring may be interposed in the bending part of the link 24 to force the link 24 to bend. It can be changed to a string-like body such as a chain or a telescopic rod, and these can be replaced with the above-mentioned bracket 9.
It may also be provided between the bracket 9 and the frame 11 or between the bracket 9 and the pivot member 14.

Further, as the regulating mechanism 23, the pivot link 24 and the pivot connection part of the waist bend link mechanism 13,
A stopper may be provided to abut and hold the pair of links in a bent position, and the regulating mechanism 23 can be modified in various ways.

In summary, the present invention is characterized in that the above-described combine harvester is provided with a mechanism 23 that restricts the waist bending link mechanism 13 from reaching the fully extended state when the reaping section 8 is in the maximum separation state.

That is, by preventing the tension phenomenon caused by the full extension of the bending link mechanism 13, maintenance inspection and assembly and connection can be easily performed by one person as described above. Also,
Since only the regulation mechanism 23, which has a relatively simple configuration as shown in the embodiment, is added, modification can be easily performed and it is advantageous in terms of implementation.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the combine harvester according to the present invention, FIG. 1 is a side view of the front part of the combine, FIGS. 2 and 3 are explanatory diagrams showing the back and forth swinging state of the frame, and FIG. 4 is a regulation diagram. It is an explanatory diagram of the mechanism. 8...Reaping part, 9...Mounting bracket, 11
...Frame, 12...Fluid pressure cylinder, 13...
...Folding link mechanism, 14...Pivot member, 23...
...Regulation mechanism, X, Z...Left and right horizontal axis center.

Claims (1)

[Scope of utility model registration request] The first left and right horizontal axis center Z by the fluid pressure cylinder 12
A reaping section 8 is attached to a frame 11 that can be vertically swung around the frame 11.
, and when the pivot member 14 of the frame 11 is disconnected from the mounting bracket 9, a second
The cylinder 12 is configured to be able to swing freely toward the front side of the fuselage around the left and right horizontal axis X, and the cylinder 1 is provided between the frame 11 and the cylinder 12.
A bending link mechanism 13 that allows the pivot member 14 to swing toward the front of the machine body about the second left and right horizontal axis X in the extended state of 2 is pivotally connected, and the reaping section is connected to the machine body. 8 in a connected state so that they can be freely separated toward the front side of the machine body, and a mechanism 2 that restricts the waist bending link mechanism 13 from being in a fully extended state when the reaping section 8 is in a maximum separated state.
A combine harvester characterized by having 3.