JPH0316436Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a locking device for a grain tank installed in a threshing machine such as a combine harvester or a harvester.

[Problems to be solved by the prior art and the invention] In general, some threshing machines of this kind store the threshed grains in a grain tank, and the grain tank becomes almost full. There is a known method in which the grains in the grain tank are transferred to the loading platform of a truck parked on a ridge. However, such a grain tank is generally installed in parallel with the threshing section, and in such cases, a belt or the like interposed between the grain tank and the threshing section is installed. power transmission mechanism, crimp net below the threshing machine,
In order to perform inspection and maintenance of parts such as secondary object carriers,
The grain tank is configured to rotate from a grain feeding position along the side of the threshing section to an open position protruding outward from the machine body, and a large working space is provided between the threshing section and the grain tank. There is something that can be done to ensure that. However, in this case, when grains are supplied, the grain tank, which stands up in the grain supply position, is connected to a grain lifting cylinder that lifts and conveys the grains from the threshing section, and the grains are supplied from the grain lifting cylinder. In order to completely match the grain supply port on the side of the grain tank where the grains are stored, and to prevent grains from leaking from there, the grains were firmly fixed using appropriate locking means such as bolts and clamps, but If you forget to lock the lock, or if you continue to work if the lock is incomplete, the communication between the grain lifting tube and the grain supply port may be incomplete or misaligned, resulting in grain spilling and scattering. This was extremely dangerous as the grain tank could unexpectedly protrude outward from the aircraft due to vibration or tilting of the aircraft.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a locking device for a grain tank that can eliminate these drawbacks. In a grain tank configured such that a grain tank for storing grains is swingably pivoted so that it can be tilted from an upright grain supplying position to an inclined position tilted toward the outside of the fuselage, Switching between the lock mechanism that locks the grain tank in the grain supply position and the clutch mechanism that connects and disconnects power transmission to the connecting side of the clutch mechanism is regulated when the lock mechanism is in the unlocked state, and is allowed when the lock mechanism is in the locked state. It is characterized by interlocking and interlocking.

With this configuration, the present invention prevents the clutch that cuts off the power from being engaged unless the grain tank is locked, thereby preventing problems such as grain leakage or inadvertent protrusion of the grain tank. This is to ensure that this can be prevented.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a traveling machine of a combine harvester, and behind a pre-processing section 2 for reaping stem culms, which is provided on the front side of the traveling machine 1, there is a threshing machine on one side (the left side in this example). Part 3 has a grain tank 4 on the other side.
are arranged in parallel, and an operation control section 5 is arranged on the front side of the grain tank 4, and an engine section 6 is arranged on the rear side. Furthermore, a post-processing section 7 is provided on the rear side of the traveling body 1 for cutting and tying the culms. still,
Reference numeral 8 indicates a crawler-type traveling body, 9 indicates a grain lifting cylinder that supplies grains threshed and sorted on the side of the threshing section 3 to the grain tank 4, 10 indicates a control panel provided in the operation control section 5, and 10a indicates a control panel. The seat 12 is a discharge cylinder for discharging the grains in the grain tank 4.

As shown in FIG. 3, the grain tank 4 has a substantially wedge-shaped lower end when viewed from the front, and the top of the lower end is attached to the fuselage frame 1a via a pivot 11 so as to be swingable toward the outside of the fuselage. It is pivotally connected. The grain tank 4 stands up along the lateral side of the threshing section 3, and the grains lifted by the grain lifting tube 9 are supplied into the grain tank 4 from the grain supply port 4a. From the grain feeding posture (solid line state in Figure 3), the lower end outer plate 4b of the grain tank 4 contacts the machine frame 1a and projects outward from the machine body, and the grain tank 4 and threshing section 3 are separated from each other. It is designed to be able to tilt and change to an open position (the state shown by the imaginary line in Fig. 3) in which a space in which work can be performed is created. Reference numeral 14 denotes an operating shaft rotatably supported on a bearing 13 provided on the side plate of the threshing section 3 facing the grain tank 4, and a lock operating lever 15 is integrally provided on the operating shaft 14. On the other hand, a lock plate 16 is provided protruding from the side plate of the grain tank 4 facing the threshing section 3. and,
By positioning the lock operation lever 15 in the lock position shown by the solid line in FIG. It engages with the locking plate 16 from above and locks the grain tank 4 in the grain supplying position,
Further, by positioning the lock operating lever 15 to the unlocking position shown by the imaginary line in FIG. 3, the engagement of the lock pin 17 with the lock plate 16 is released, and the grain tank 4 can be tilted to the open position. This forms a locking mechanism.

Reference numeral 18 denotes a threshing clutch lever disposed in the operation control section 5, and the threshing clutch lever 18 is rotatably connected to a frame 19 fixed to the machine body side about a pivot 19a as a fulcrum. However, the threshing clutch lever 18 is connected via a connecting wire 24 to a tension pulley 23 for tensioning a transmission belt 22 suspended between a driving pulley 20 interlockingly connected to the engine side and a driven pulley 21 on the threshing section side. Threshing clutch lever 18
By the switching operation, the transmission belt 22 is tightened or loosened, thereby forming a clutch mechanism that connects and disconnects power to the threshing section 3. 25 is a regulating arm in which a boss portion 25a is swingably supported on a pin shaft 26 protruding from the frame 19;
The regulating arm 25 protrudes toward the threshing clutch lever 18 as shown by the imaginary line in FIG.
It is constantly energized by the torsion machine 27 so as to restrict the switching of the threshing machine 9 to the threshing operation side (power-on state side). Further, one end of an actuating wire 28 is connected to a connecting arm 25b protruding from the boss portion 25a, and the other end of the actuating wire 28 is connected to an arm 14a provided on the actuating shaft 14. ing. Then, by operating the lock operating lever 15 from the unlocked position to the locked position, the actuating wire 28 is pulled toward the grain tank 4 in a state in which it slightly passes over the fulcrum, and thereby the regulating arm 25
The torsion machine 27 is moved from the regulation position that restricts the switching operation of the threshing clutch lever 18 to the threshing operation side.
The lock mechanism and clutch mechanism of the grain tank of the present invention are interlocked. Continuity relationships are configured. In the figure, 29 is a stopper for the grain tank 4 in the grain supply position.

In the embodiment of the present invention configured as described above, the grains threshed and sorted by the threshing section 3 are supplied to the grain tank 4 by the grain lifter 9 and stored therein. Once the grains have been appropriately stored in the grain tank 4, the grains in the tank are discharged and transferred to the loading platform of a truck parked on the ridge using the discharge pipe 12, and the grains are transferred to the stem culm. Reaping and threshing work will be carried out.

In a combine harvester that performs such threshing work, now is the time to inspect and maintain the power transmission mechanism such as the belt interposed between the threshing section 3 and the grain tank 4, or the crimp net and sorting room in the threshing section 3. In the present invention, with the lock operation lever 15 in the unlocked position, the grain tank 4 is rotated on the axis 11.
The grain tank 4 and the threshing section 3 are wide open to form a space, and a worker can enter the space and remove the belts, etc. Inspection and maintenance of power transmission mechanisms, crimp networks, etc. can be carried out. When the inspection and maintenance are completed, the grain tank 4 is raised to the upright grain supplying position, and the lock operating lever 15 is placed in the lock position to continue the threshing operation again.

As described above, in the present invention, it is possible to secure a wide space between the threshing section 3 and the grain tank 4 and to easily carry out necessary inspection and maintenance.
If you forget to lock the grain tank 4 when restarting the threshing operation, in this invention,
Since the clutch mechanism remains in the disengaged state,
You will not be able to resume work. That is, when the threshing tank 4 is not locked by the lock operating lever 15, the regulating arm 25
Due to the biasing force of Even if you try to operate it on the work side, you will not be able to operate it at all. To continue the threshing operation, the lock operation lever 15 is operated to lock the grain tank 4 in the grain supply position, and the restriction by the restriction arm 25 is automatically released. , this allows work to resume. Therefore, if the threshing operation is restarted without locking the grain tank 4 as in the past, the grains supplied from the grain lifting cylinder 9 may spill out from the grain supply port 4a and be scattered, or the vibrations of the machine body may occur. There is no inconvenience such as the grain tank 4 inadvertently protruding or falling down due to slope or inclination. Moreover, in the present invention, the clutch mechanism and the locking mechanism of the grain tank 4 are interlocked as described above, so that unless the grain tank 4 is always locked in the normal grain supplying position, the clutch is not engaged. Therefore, the grain lifting cylinder 9 and the supply port of the grain tank 4 always match accurately, and there is no problem of grain leakage due to misalignment.

Further, in this embodiment, the grain tank 4 is locked at a position slightly beyond the fulcrum of the operating wire 28 (the fulcrum is the operating shaft 14), At the position, the torsion mechanism 27 is used to forcibly shift the locking mechanism to the unlocked side, so that the locking relationship between the grain tank 4 and the clutch mechanism is never in an ambiguous intermediate state. Therefore, more reliable and safe lock operation can be performed.

It should be noted that the present invention is of course not limited to the above embodiments, and the clutch mechanism interlocked with the locking mechanism of the grain tank may include:
In order to intermittent the power transmission to the threshing section, there is not only a clutch mechanism provided in the power transmission mechanism to the threshing section, but also a clutch mechanism provided in the power transmission mechanism to the threshing section, for example, as in the second embodiment shown in FIGS. The clutch mechanism may be provided in the power transmission mechanism to the running section to connect and disconnect the power transmission that can be disconnected. In this second embodiment, the operating lever (traveling speed change lever) 29 for engaging and disengaging the clutch mechanism can be operated not only from the neutral position N to the forward traveling positions F1 and F2, but also to the reverse traveling position R. In order to restrict the operation so that it cannot be operated, a pair of restriction arms 25, 25,
The control lever 29 is configured to protrude forward and backward across the neutral position N so as to simultaneously restrict shifting of the control lever 29 to the forward and backward movement sides.

[Operation and Effect] In summary, the present invention, which is constructed as described above, changes the grain tank from the grain supplying position along the lateral side of the threshing section to the open position protruding outward from the machine body. By making it visible, a large working space can be secured between the grain tank and the threshing section for inspecting and servicing parts such as power transmission mechanisms such as belts and crimp nets. However, unless the grain tank is accurately locked in the upright grain feeding position and the grain lifting cylinder and grain feeding port on the grain tank side are completely aligned, the clutch mechanism cannot be powered on. Therefore, due to the lock being incomplete or forgotten as in the past,
This makes it possible to reliably prevent inconveniences such as the supply port on the grain tank side and the grain lifting cylinder becoming misaligned, resulting in grains spilling out and scattering, or the grain tank inadvertently tilting. .

[Brief explanation of the drawing]

The drawings show an embodiment of the grain tank locking device according to the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is a plan view of the main part, and Fig. 3 is a front view of the main part. Figure 4 is a schematic diagram of the clutch mechanism provided in the power transmission mechanism to the threshing section, Figure 5 is an exploded perspective view of the grain tank lock mechanism, Figure 6 is an exploded perspective view of the clutch lock mechanism, and Figure 7 is an exploded perspective view of the clutch lock mechanism. 8 is a front view of the main parts of the clutch mechanism showing the second embodiment, FIG. 8 is a plan view of the main parts of the same, and FIG. 9 is an exploded perspective view of the clutch lock mechanism showing the second embodiment. In the figure, 1 is a traveling machine body, 3 is a threshing section, 4 is a grain tank, 15 is a lock operating lever, 18 is a threshing clutch lever, and 25 is a regulating arm.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Transformation of the grain tank that stores threshed grain from a grain supplying position along the side of the threshing section to an open position protruding outward from the machine body. In a grain tank configured to be pivoted so as to be able to freely swing, a lock mechanism that locks the grain tank in the upright grain feeding position and a clutch mechanism that connects and disconnects power transmission are connected to each other. A locking device for a grain tank characterized in that switching to the side is regulated in an unlocked state of the locking mechanism and is allowed in a locked state. 2. The clutch mechanism is a clutch mechanism provided in a power transmission mechanism to the threshing section, and the clutch mechanism and the lock mechanism are switched to the next side of the clutch mechanism to transmit power to the threshing section.
The grain tank according to claim 1 of the utility model registration claim, characterized in that the grain tank is connected via a regulating means that is interlocked with switching of the locking mechanism so that it is regulated in the unlocked state of the locking mechanism and permitted in the locked state. locking device. 3. The clutch mechanism is a clutch mechanism provided in a power transmission mechanism to the traveling section, and the clutch mechanism and the lock mechanism are switched to the contiguous side of the clutch mechanism to transmit power to the traveling section.
The grain tank according to claim 1 of the utility model registration claim, characterized in that the grain tank is connected via a regulating means that is interlocked with switching of the locking mechanism so that it is regulated in the unlocked state of the locking mechanism and permitted in the locked state. locking device.