JPS598909Y2 - Agricultural working machine operation device - Google Patents

Description

[Detailed explanation of the invention] Generally, when a combine harvester or other self-propelled agricultural machine is driven backwards, especially when the driver is driving from the rear of the combine harvester, the driver walks backwards, so the driver It is more likely that the driver will fall over than when the vehicle is moving forward.

In this way, if a driver falls while driving backwards, and the combine harvester continues to drive backwards, it is very dangerous to run over the fallen driver or get caught in the operating traveling gear. Met.

The purpose of this invention is to eliminate the above-mentioned dangers and ensure the safety of the driver when reversing a combine harvester. A gear shift lever is provided rotatably on the shaft and can be changed between forward, neutral, and reverse positions, and a blocking means is provided for placing the gear shift lever in the reverse position and blocking rotation of the clutch lever at a predetermined position. The lever is within the rotation range of the clutch lever that activates the traveling device, and the reaction force on the clutch lever from the clutch mechanism acts as a force that rotates the clutch lever toward the rotation end on the stop operation side. The present invention provides an operating device for an agricultural working machine in which the blocking means blocks the clutch lever at a predetermined position within a rotation range of the clutch lever.

The present invention will be explained below based on the embodiments shown in the figures.

As shown in FIG. 1, the combine harvester is provided with a traveling device 1, a reaping device 2, a threshing device 3, a driving operation device 4, and the like.

Referring to FIG. 2, FIG. 3, and FIG.
3. A gear shift lever 5, which can be freely changed in position with its base 5a as a fulcrum at the neutral position B1B2 and the reverse position C, is provided on the upper surface of the operation table 6, and an operation plate 7 is provided that covers the upper and side sides of the operation table 6, and the operation plate The speed change lever 5 is located on the inner surface of the side portions 7a and 7a of 7.
The support shaft 8 is horizontally suspended in a position substantially parallel to the position change direction A from the neutral position B2 to the reverse position C, and at a position where the shift lever 5 does not come into contact with the shift lever 5 no matter what position the shift lever 5 is changed to. A cylindrical base portion 9a of a clutch lever 9 for transmitting driving power is externally fitted to a suitable portion of the support shaft 8 at a predetermined distance from the vicinity of the reverse position C of 5 along the position change direction A, An action plate 10 is fixed to the cylindrical base 9a and is oriented in substantially the same direction as the clutch lever 9, and a connecting device 11 having a curved lower portion or a hook-like shape as a whole is curved with its base end 11a. It is pivotally supported on the tip end 10a of the action plate 10 in a posture in which the portion thereof is concave toward the support shaft 8, and is attached to the tip of the wire 13 extending from the clutch mechanism 12 for transmitting power for traveling of the combine harvester. A spring 14 is fixed to the tip of the connector 11.

Reference numeral 15 denotes a wire tube, through which the wire 13 passes and is guided to the clutch mechanism 12, and near the wire outlet 15a of the wire tube 15, the wire 13 is connected to the fixed plate 1 on the side of the operating table 6.
It is fixed at 6.

The panel portion 7b of the operation plate 7 has a gear shift groove 17 in the shape of a "shape" corresponding to the position change between the forward position AIA2A3, the neutral position B1B2, and the reverse position C of the shift lever 5.
and a clutch groove 18 corresponding to the rotation range of the clutch lever 9, and the gear shift lever 5 and the clutch lever 9 are made to protrude upward from the respective grooves 17 and 18 of the panel portion 7b.

The rotation range of the clutch lever 9 will be explained.

Referring to FIG. 5, the rotatable range is from position D0 to position D5. At position D1, clutch lever 9 is locked by operation plate 7 and wire 13 is also loosened, so clutch mechanism 12 is It is in the "off" state.

In the rotation range from position D1 to position D2, the wire 13 is pulled through the coupling 11, but the clutch mechanism 1 is still
The clutch mechanism 12 remains in the "off" state without reaching the point where the clutch mechanism 2 is turned on.

In the rotation range from position D2 to position D5, the wire 13
is pulled over a predetermined distance that can cause the clutch mechanism 12 to turn on, so within this rotation range the clutch mechanism 12 is in the on state.

Now, within the rotation range from position D2 to position D5, the reaction force of the wire 13 is always generated toward the wire outlet 15a, but on the extension of the wire 13 (i.e., the pivot point M1
When the clutch lever 9 is located between positions D2 and D4, the wire 13
The reaction force of the wire 13 acts as a force to rotate the clutch lever 9 toward position D1 (toward the mouth), and when the clutch lever 9 is located between positions D4 and D5, the reaction force of the wire 13 rotates the clutch lever 9 toward position D5. For example, position D2
If you release your hand from clutch lever 9 between positions D4, wire 1
3, the clutch lever 9 always rotates to position D1, and the clutch mechanism 12 is turned off. If you release your hand from the clutch lever 9 between positions D4 and D5, this time, contrary to the above, the wire 13 is rotated. The clutch lever 9 is rotated to position D5 by the reaction and is locked to the operation plate 7, so that the clutch mechanism 12 is maintained in the "on" state.

Regarding the structure and attachment of the blocking body 19 for blocking rotation of the clutch lever 9, it has a rectangular cross-sectional hole 21 penetrating in the same direction as the direction A of changing the position of the gear shift lever 5 from position B2 to position C. The sliding guide body 20 is attached to the panel section 7b.
An L-shaped blocking body 22 fixed at a predetermined position on the back surface and having a rectangular cross section that engages with the rectangular cross-sectional hole 21 is inserted into the rectangular cross-sectional hole 21 so as to be slidable in the A direction and the A' direction. The gear shift lever 5 moves the abutting portion 19a vertically to the sliding directions A and A' of the body 19 from the position B2 to the position C.
The blocking body 19 has a blocking actuating portion 19b on the distal end side.
, and a spring 22 is interposed between the blocking body 19 and an appropriate location on the panel portion 7b so that the blocking body 19 is biased in the direction A'.

When no external force other than the spring 22 is applied to the blocking body 19, the blocking body 19 is such that the abutting portion 19a is located at an appropriate distance in the A direction from the shift lever 5 at position B2.
The length of the spring 22 is adjusted or a stopper 23 is provided so that it stops at position B'.

At this position B', the blocking actuating portion 19b is outside the rotation locus of the clutch lever 9 and does not prevent the clutch lever 9 from rotating from position D1 to position D5.

When the shift lever 5 is changed from the neutral position B2 to the reverse position C, the blocking body 19 is also pushed by its abutting portion 19a, and moves to a position C' where the abutting portion 19a contacts the shift lever 5 at the reverse position C. Slide until.

At this position C', the blocking portion 19a prevents the clutch lever 9 from rotating at a predetermined rotational position.

At what rotational position (predetermined position) is the clutch lever 9 blocked by the blocking actuator 19b?With reference to FIG. At any rotational position D3, the clutch lever 9 rotating from position D1 is blocked by the blocking actuation part 19b, that is, by the blocking actuation part 19 at position C', the clutch lever 9 rotates from position D1 in eight directions. As long as the clutch lever 9 is prevented from rotating at the rotation blocking position n, the clutch mechanism 12 remains in the "on" state as long as the driver holds it in the rotation blocking position D3 by hand. If you release your hand, it will return to position D1 and turn off the clutch mechanism 12.
The situation is as follows.

Note that the spring 22 has sufficient elastic force to return one blocking body from position C' to position B', but returns one blocking body and clutch lever 9 together from position C' and reverse position C to position B' and Use something that cannot be returned to neutral position B.

Therefore, even if the shift lever 5 is placed in the reverse position C and released, the shift lever 5 and the blocking body 19 remain in the position C' and the reverse position C.
When the shift lever 5 is manually changed to the neutral position B2, the blocking body 19 also returns to the position B' by the action of the spring 22.

The operating state of the driving operation device 4 implemented as described above will be explained.

When moving a combine harvester or the like forward, even if the shift lever 5 is placed in any of the forward high speed position A1, the forward middle speed position A2, or the forward low speed position A3, the shift lever 5 does not act on the blocking body 19. The blocking body 19 is at position B'
The blocking actuating portion 19b is not in a state of blocking the rotation of the clutch lever 9, and the clutch lever 9 can freely change its rotational position within the entire rotational range from position D1 to position D5.

Therefore, even if the clutch lever 9 is set at position D5 and the driver releases the clutch lever 9, the forward traveling state can be maintained.

When driving a combine harvester or the like in reverse, the clutch lever 9 is first moved to position D1, and the clutch mechanism 12 is
OFF" state, and change the position of the shift lever 5 from the neutral position B2 to the reverse position C.

At this time, the blocking body 19 is also pushed by the shift lever 5 to position B'.
It slides in the direction from position C'.

Next, the clutch lever 9 is rotated in eight directions from the rotation position D1, and when the rotation position D2 is passed, the clutch mechanism 12 is turned on and the combine is driven backward.

However, the prevention actuator 19 prevents the mold from moving in eight directions at the rotational position D3, so when driving in reverse, the clutch lever 9 is always held and positioned between positions D2 and D3 (the clutch lever 9 is placed between the positions D2 and D3). It is easiest to maintain the position D3 by bringing the two into contact with each other), and then move the combine backward.

Therefore, when traveling in reverse, the driver simply releases his hand from the clutch lever 9, and the reaction force of the wire 13 causes the clutch lever 9 to return to position D1 and stop the combine from traveling backwards. Even in a dangerous situation, such as when the combine overturns, if the operation of the traveling device 1 of the combine is not stopped immediately, the driver can escape from the danger simply by releasing his hand from the clutch lever 9.

As described above, the present invention provides a clutch lever that is connected to a clutch mechanism and is rotatable around a support shaft for operating and stopping the traveling device, and a gear shift lever that can be freely changed between a forward neutral position and a reverse position. A blocking means is provided for placing the gear shift lever in the reverse position and blocking the rotation of the clutch lever at a predetermined position, and the clutch lever is within the rotation range of the clutch lever that operates the traveling device and is away from the clutch mechanism. The blocking means blocks the clutch lever at the predetermined position within the rotation range of the clutch lever, where the reaction force on the clutch lever acts as a force to rotate the clutch lever toward the rotation end on the stop operation side. So,
When traveling backwards, simply releasing the clutch lever will stop the agricultural machine, so if the driver falls while traveling backwards, the machine will continue to travel backwards and prevent the operator from running over the driver or damaging the traveling equipment. This has the effect of eliminating the risk of being caught in the vehicle and ensuring driver safety.

[Brief explanation of the drawing]

Fig. 1 is a side view of a combine harvester, Fig. 2 is a plan view of the operating device for an agricultural working machine implementing the present invention, Fig. 3 is a rear view, and Fig. 4 is an I-I of Fig. 2. The cutaway side view, FIG. 5, is an explanatory view corresponding to FIG. 4. 1... Traveling device, 5... Gear shift lever
9... Clutch lever, 13... Wire, 17... Speed change groove, 19... Blocker, 19 a... Contact part , 19 b...
Blocking operation section, 20...Sliding guide, 22...
···Spring.

Claims (1)

[Scope of utility model registration request] A clutch lever connected to a clutch mechanism for operating and stopping the traveling device is rotatably provided on a support shaft, and a shift lever is provided that can be freely changed between forward, neutral, and reverse positions, and the shift lever is placed in the reverse position. In addition, a blocking means is provided for blocking the rotation of the clutch lever at a predetermined position, and the clutch lever is within the rotation range of the clutch lever for operating the traveling device, and the reaction force from the clutch mechanism to the clutch lever is provided. Operation of an agricultural working machine, characterized in that the blocking means blocks the clutch lever at the predetermined position within the rotation range of the clutch lever, which acts as a force for rotating the clutch lever toward the rotation end on the stop operation side. Operating device.