JPS5836596Y2 - Interlocking device for travel clutch pedal and gear shift lever - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an interlocking device for a latch pedal and a speed change lever in a mobile agricultural machine, particularly a combine harvester having a control device at the front of the machine.

Conventionally, this type of combine harvester has been provided with separate latch pedal support shafts and shift lever support shafts.

As a result, the arrangement of the operating section becomes complicated, and a fly spring for attaching the speed change lever must be provided in the operating section, which causes an increase in weight.

On the other hand, if the driver accidentally operates the gear shift lever without releasing the latch that allows the vehicle to run, the engine may stall or the gear may be damaged.

In view of this, the present invention supports the latch pedal and the gear shift lever for running on the same support shaft, and further interlocks them with a clutch piece so that the gear shift lever cannot be operated unless the clutch pedal is depressed. It is an object of the present invention to provide an interlocking device for a latch pedal and a speed change lever for running, which eliminates the drawbacks.

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

As shown in FIGS. 1 and 2, the combine 1 includes a reaping section 2, a threshing and adjusting section 3, a traveling section 5, a power section 6, a hopper 7, and a control section 8 located at the front of the machine body.

A support shaft 10 is fixed to the lower part of the control section 8 by a frame 9, and the support shaft 10 has a large diameter portion 10 as shown in detail in FIG.
a, a male threaded portion 10b and a small diameter portion 10c.

A running latch pedal 11 and boss portions 11a and 12a of a speed change lever 12 are rotatably supported on the small diameter portion 10c of the support shaft 10, respectively.

A female thread 1 is provided on one side of the boss portion 11a of the clutch pedal 11.
1c is formed, and a clutch piece 1 made of a disc spring is formed on the other side.
3 is fixed.

The female thread 11c is screwed into the male threaded portion 10b of the support shaft 10, so that the running latch pedal 11 slides along the support shaft 10 as it rotates around the support shaft 10.

In the past, a spring 15 was stretched between the clutch pedal 11 and the frame 9, and urged the pedal 11 counterclockwise in FIG. 3.

Furthermore, one end of a rod 17 whose length can be adjusted by an adjustment NAND 16 is connected to the clutch pedal 11, and the other end of the rod 17 is provided in a transmission line between the power unit 6 and the transmission 18. The main clutch 20 is connected to the main clutch 20.

A clutch piece 21 is provided on one side of the boss portion 12a of the gear shift lever 12 so as to face the clutch piece 13 provided on the boss portion 11a of the clutch pedal 11, and the other side is secured to the support shaft 10 by a bolt 22. It is prevented from coming off by a collar 23 fixed to the end face.

One end of a connecting rod 19 is connected to the speed change lever 12, and the other end of the rod 19 is connected to the □ switch 18 to operate the speed change gear.

Since the present invention has the above-described configuration, even if an attempt is made to operate the gear shift lever 12 without depressing the latch pedal 11, the female thread 11c of the clutch pedal 11 will not connect to the support shaft 10.
Since the clutch pieces 13 and 21 (ri) are connected by a predetermined force, the gear shift lever 12 cannot rotate.

Now, when you step on the running latch pedal 11 and rotate it as shown by the chain line in FIG. 3 against the spring 15, the rod 17
The main clutch 20 is brought into a disengaged state via.

At the same time, the running latch pedal slides to the left in FIG. 4 due to the threaded relationship between the female thread 11c and the male threaded portion 10b of the support shaft 10, resulting in a state as shown by the chain line.

As a result, the joining force of the disc spring-shaped clutch pieces 13, 21 fixed to both the boss portions 11a, 12a is relaxed, and the speed change lever 12 can freely rotate.

Therefore, the transmission 18 is operated to change the speed by rotating the speed change lever 12 via the connecting rod 19.

As explained above, according to the present invention, since the running latch pedal 11 and the gear shift lever 12 are supported by one support shaft 10, the arrangement of the control section is simplified, and the gear shift lever 12 can be mounted on the frame. Since this can be omitted, the weight of the aircraft can be reduced and costs can be reduced.

Since the gear shift lever 12 cannot be operated unless the latch pedal 11 is depressed, the gear shift lever 12 cannot be operated.
can prevent engine stalling and damage to transmission gears due to incorrect operation.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a combine harvester to which the present invention is applied, Fig. 2 is a front view thereof, Fig. 3 is a side view showing a running latch pedal and a gear shift lever, and Fig. 4 is a Fig. 3 tv- t
It is a sectional view taken along the v-line. , 1... Mobile agricultural machine (combiner), 9...
...Frame, 10...Spindle, 11...
・Running latch pedal, 11a...Boss part, 1
2...Shift lever 12a...Boss part, 13, 21...Clutch piece.

Claims (2)

[Scope of utility model registration request] (1) In a control device for a mobile agricultural machine, a boss portion of a latch pedal and a gear lever running on a support shaft fixed to a frame are rotatably supported, and clutch plates are provided on opposing end surfaces of the two boss portions, respectively; The moving latch is configured such that the moving latch pedal slides along the support shaft as the moving latch pedal rotates, so that the gear shift lever cannot be operated unless the clutch pedal is depressed once. Interlocking device for pedal and gear shift lever. (2) An interlocking device for a running latch pedal and a speed change lever according to claim 1, wherein the mobile agricultural machine is a combine harvester having a control device at the front of the machine.