JPH0310814Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is such that the clutch of the reaped grain culm conveying device to the threshing section is automatically cut in conjunction with the rise of the harvested grain culm conveying device from the ground relative to the reaping pre-processing section, and The present invention relates to an operating structure for a combine harvester, which is provided with a mechanism that is linked to automatically enter and operate in conjunction with the lowering of the pre-reaping processing section to the ground.

The above combine reliably prevents the engine from stopping when the machine is turned with the pre-harvesting section raised above the ground after work is interrupted, such as when changing the direction of travel at the edge of the shore. It has been designed to make it possible. In other words, when the aircraft turns, the driving load on the traveling device increases compared to when moving straight, but at that time, the harvested grain culm conveying device remains driven, and the threshing section of the harvested grain culm remaining in it is If the supply continues, the engine load will increase significantly due to the drive load of the traveling device and the drive load of the threshing section, so in order to reliably prevent this increase in engine load, When the reaping pre-processing section is raised above the ground, the drive of the reaped grain culm conveying device is automatically stopped.

However, conventionally, when the machine is driven straight with the pre-harvesting section raised above the ground, such as when the machine interrupts work and travels towards the edge of the bank to unload the threshed grain from a full paddy bag or tank. In this case, the drive of the harvested grain culm conveying device is automatically stopped, and the grain culm remains in the harvested grain culm traveling device, and the remaining grain culm causes a disturbance in its posture due to the traveling vibration, leading to clogging after work is resumed. In addition, the grain culms remaining at the starting end and the ending end, where the holding capacity of the conveying device is low, are likely to fall off due to running vibrations.

The purpose of this invention is to ensure that the engine stops when the aircraft turns after stopping work, while also preventing the above-mentioned troubles from occurring when the aircraft stops working and moves straight ahead. The purpose is to make it possible to obtain the structure easily.

The characteristic configuration of the present invention is that, in the operating structure of the combine harvester described at the beginning, the clutch is biased toward the entry side, and the preprocessing section side linking tool and the clutch side linking tool that constitute the linking mechanism are relatively movable. At the same time, the linking members of the pre-processing section side linking tool and the clutch side linking tool are attached so as to be freely switchable between an operating position and an action release position. The functions and effects thereof are as follows.

In other words, when the linking member is switched to the operating position, the pre-processing part side linking tool and the clutch-side linking tool become linked, and the clutch automatically disengages in conjunction with the rise of the pre-reaping part from the ground. The clutch will automatically engage in conjunction with the lowering of the processing unit to the ground. Then, when the interlocking member is switched to the operating position with the reaping pre-processing section raised above the ground,
The pre-processing section side linking tool and the clutch side linking tool are switched to a disengaged state, and the clutch side linking tool operates to the clutch-engaging side due to the force of the clutch's engagement position, causing the clutch to engage.

Therefore, because of the linking member that can be switched between the active position and the non-active position, the power transmission to the reaped grain culm conveying device is automatically cut off when the machine turns, preventing clutch stop, while also preventing threshing grains from being unloaded. When the reaping pre-processing section is raised above the ground and traveling straight ahead, the reaped grain culm conveying device is kept running to send the remaining grain culm to the threshing section, and the reaped grain culm is transferred to the conveying device. It is now possible to avoid situations where the material remains in place, causing a disturbance in posture, or falling out.

Furthermore, the structure is simple, just by modifying the interlocking members so that they can be switched and operated, making it advantageous in terms of economy and durability.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Figures 1 and 2, there are four lifting devices 1 for the planted grain culms, a reaping device 2 for the raised grain culms, and the grain culms from the reaping device 2 are collected on one side of the machine body. A reaping pre-processing section 5 consisting of a horizontal conveying device 3 and a vertical conveying device 4 for conveying grain culms from the horizontal conveying device 3 to the rear of the machine is connected to a crawler type traveling device 6, a driving section 7, a driving section 8, and the vertical conveying device 4. The front part of the traveling machine has a threshing section 9 for the harvested grain culms supplied from the conveyor 4, a bagging section 10 for the threshed grains, etc., and a swinging up and down operation by a cylinder 11 is freely connected to the front part, so that four-row mowing is possible. A combine harvester is constructed.

As shown in FIG. 3, the power transmission structure for the reaping pre-processing section 5, the traveling device 6, and the threshing section 9 is constructed by transmitting the output of the engine E to the hydraulic continuously variable transmission 1.
2 to a traveling gear transmission 13, and the output of this transmission 13 is inputted to an energized articulating clutch 14, and the output of this clutch 14 is transmitted to the lifting device 13. 1..., the transmission case 15 for the reaping device 2 and the horizontal conveyance device 3, and the vertical conveyance device 4
Further, the output of the engine E is branched and transmitted from the upper side of the continuously variable transmission 12 to the handling cylinder 16, and the power transmitted to the handling cylinder 16 is branched from the upper side. and is transmitted to the threshing feed chain 18 via the engaged clutch 17 which is biased.

As shown in FIGS. 4 and 5, the driving section 8
The first and second linking tools 2 are relatively swingable and are swingably attached to the side cover 19 by a support shaft 20.
1, 22, two release wires 23, 24 that link the first linking device 21 to the swing operating arm 14a of the pre-processing section clutch 14 and the swing operating arm 17a of the feed chain clutch 17; A pin-shaped linking member 25 is attached to the free end of the second linking tool 22 to enable the linking tools 21 and 22 to interlock, and a support shaft 26 is attached to the second linking tool 22 to the traveling aircraft body.
The first push/pull rod 28 is connected to the bracket 27 of the reaping pretreatment frame 5a, which is connected to the reaping pretreatment frame 5a so as to be vertically swingable, the third swingable linking tool 29, the release wire 30, and the fourth swingable linking tool. 31, a linkage mechanism 33 consisting of each of the second push/pull rods 32;
Accordingly, both the clutches 14 and 17 are connected so that they are automatically engaged and disengaged in conjunction with the movement of the pre-reaping treatment section 5 up and down from the ground. When the grain culm is raised from the ground, the drive of the horizontal conveyance device 3, vertical conveyance device 4, and threshing feed chain 18 is automatically stopped, and the threshing portion of the harvested grain culm remaining in the horizontal conveyance device 3 and the vertical conveyance device 4 is removed. 9 and the supply of the harvested grain culms remaining in the threshing feed chain 18 to the handling room are stopped, and when the reaping pre-processing section 5 is lowered to the ground, the horizontal conveying device 3, The driving of the vertical conveyance device 4 and the threshing feed chain 18 is automatically started, and the harvested grain culms remaining in the horizontal conveyance device 3 and the vertical conveyance device 4 are supplied to the threshing section 9, and the threshing feed chain 8 is The supply of the remaining harvested grain culm to the handling room is started. That is, as the reaping pre-processing section 5 rises above the ground, the first push/pull rod 28 is lowered, and the first linking tool 21 is swung in the direction of arrow A by the second linking tool 22 via the linking member 25. Operating arm 1 of pre-processing section clutch 14
4a is operated by the release wire 23, the operating arm 17a of the threshing feed chain clutch 17 is operated to the clutch release position (OFF) by the release wire 24, and as the reaping pre-processing section 5 is lowered from the ground. 1st push/pull rod 2
8 is lifted, the second linking member 22 is swung in the direction of arrow B, and both clutch operating arms 14a, 17
a is brought to the clutch engaged position (ON) by the restoring forces of the clutches 14 and 17, respectively.

As shown in FIG. 5, the linking member 25 is pre-treated with the first linking tool 21 as a clutch-side linking tool, with its operating portion located in the passage of the first linking tool 21 as shown by the solid line in the same figure. The operating position for bringing the second linking tool 22 as a part-side linking tool into an interlocking state, and the operating position where the operating part is outside the passage and the cover 19 is in an interlocking state.
It is configured so that it can be retracted to the side and slidably switched to an action release position where the first linking member 21 and the second linking member 22 are released from the linkage, and one end side of the linking member 25 is inserted into the elongated hole of the cover 19. Operating part 8 through 19a
It protrudes to the side, and an operating tool 34 for slidingly operating the linking member 25 is attached to the protruding end thereof,
When the reaping pre-processing section 5 is raised above the ground, both the clutches 1 are operated by using the operating tool 34 to switch the linking member 25 to the release position.
4 and 17 can be manually entered and operated with priority over the linkage mechanism 33, and the horizontal conveyance device 3, the vertical conveyance device 4, and the threshing feed chain 18 can be driven and operated. That is, when the pre-reaping treatment section 5 is raised above the ground and both clutches 14 and 17 are in the disengaged state, when the linking member 25 is switched to the release position, the first linking member 21 is moved to the disengaged state.
By eliminating the stopper that receives and supports the clutch in the disengaged position against the biasing force of 17,
The biasing forces of both clutches 14 and 17 operate the first linking member 21 from the clutch disengaged position shown in phantom lines in FIG. 6 to the clutch engaged position shown in solid lines in FIG. 6, thereby bringing the clutch into the engaged state.

The operating lever 35 shown in FIGS. 4 and 6 is used to manually engage and disengage the clutches 14 and 17 in priority over the linkage mechanism 33 when the pre-reaping treatment section 5 is in a lowered state. When the rocking operation is performed to the off position (OFF), the rocking cam 36 provided at the base acts on the roller 37 that is biased against the first linking tool 21, and presses the first linking tool 21 to perform the rocking operation as shown in FIG. and both clutch operating arms 14a,
When each of the cams 17a is pulled up to the cutting position (OFF) by the wire 23 or 24 and swung to the ON position (ON), the cam 36 is brought to a position where the action on the roller 37 is released, as shown in FIG. In this way, both clutches 14 and 17 are brought into the engaged state by their biasing forces. Further, when the lever 35 is to be automatically operated by the linking mechanism 33 of both clutches 14 and 17, the lever 35 is moved to the automatic position (AUT) which is also used as the engaged position (ON).
The swing cam 36 is retracted to a position where it does not interfere with the operation of the first linking tool by the preprocessing section frame 5a.

[Brief explanation of the drawing]

The drawings show an embodiment of the operating structure of the combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine harvester;
Fig. 2 is a schematic plan view of the reaping pre-processing section, Fig. 3 is a block diagram of the transmission system, Fig. 4 is a side view of the linkage mechanism between the reaping pre-processing section and the clutch, and Fig. 5 is the same as shown in Fig. 4.
The cross-sectional view and FIGS. 6 and 7 are side views for explaining the operation of the linking device. 3, 4... Reaped grain culm conveying device, 5... Reaping pre-processing section, 9... Threshing section, 14... Clutch, 21...
...Clutch side linking tool, 22... Pre-processing section side linking tool, 33... Linking mechanism, 34... Operation tool.

Claims (1)

[Scope of utility model registration request] The clutches 14 of the reaped grain culm conveying devices 3 and 4 to the threshing section 9 are automatically cut in conjunction with the rise of the reaped grain culm conveying devices 3 and 4 from the ground relative to the reaping pretreatment section 5, and before the reaping. The operating structure of the combine is provided with a linkage mechanism 33 that is linked so that the processing part 5 is automatically engaged as it descends from the ground, and the clutch 14 is biased toward the entry side, and the linkage mechanism 33 is Pre-processing unit side linking tool 22 that constitutes the mechanism 33
and a clutch-side linking tool 21 are mounted so as to be relatively movable, and the linking member 25 of the pre-processing section-side linking tool 22 and the clutch-side linking tool 21 can be switched between an operating position and an action release position. operating structure.