JPS5931463Y2 - Dual clutch clutch pedal lock device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clutch pedal locking device for an agricultural tractor equipped with dual clutches for traveling and PTO, and a common clutch pedal for operating both clutches.

Generally, in the above-mentioned type of agricultural tractor, when the clutch pedal is depressed by a certain amount, the latch for driving is disengaged, and when the clutch pedal is further depressed from that position by a certain amount, the PTO clutch is disengaged.

In the case of a conventional single clutch, a clutch lock lever is used to lock the pedal position when the clutch is disengaged in order to prevent the clutch from rusting.

However, when a conventional clutch lock lever is adopted for a dual clutch, there is no problem when disengaging both the drive and PTO clutches. The operator must use his/her feet to hold the tractor in the position where only the latch is released, resulting in the problem that the operator cannot leave the tractor.

This invention allows the pedal to be held not only in the pedal position where both the running latch and the PTO clutch are disconnected, but also in the pedal position where only the running latch is disconnected, without having to be held with the foot. The following is an explanation related to this.

Fig. 1 is a left side partial view of a tractor to which the present invention is applied, and Fig. 2 is a schematic view taken from the ■-■ arrow in Fig. 1. The arm 5 stands up on the boss tube 2 between the clutch pedal 1 and the clutch housing 30, and the upper end of the arm 5 is connected to the clutch release shift arm 11 at the lower side of the step 6 via clutch ronds 8, 9 having a turnbuckle 1 in the middle and a pin 10.

The upper end of the clutch release shift arm 11 is a clutch release shaft 12 that protrudes from the clutch housing 3.
The clutch shift yoke 1 is fixed to the tip of the clutch shift yoke 1 in the clutch housing 3 on the clutch release shaft 12.
3 is fixed, and the clutch shift yoke 13 is engaged with a sleeve (not shown) having a clutch release bearing at its tip.

Left side of clutch housing 3 (Figure 2) K is approximately L
A stopper 15 with a shaped cross section is tightened with two bolts 18 via spacers 16 and 17.

A hole 20 of a clutch lock lever 19, which is slightly thinner than the spacer 16, is rotatably supported on one of the spacers 16, and the clutch lock lever 19 projects toward the clutch pedal 1 side at the tip and middle portions. Latching piece 21.
22 is included.

The latch piece 21 holds the tip of the clutch lock lever 19 at 900°.
It is formed by bending, and the hooking piece 22 is formed by welding another member.

Clutch pedal 1 in FIG. 1 normally occupies the position indicated by the solid line (when both clutches are connected) due to a return spring (not shown), but when it is depressed to position 1a (position A), clutch shift yoke 13 advances to position 13a. The latch that allows the vehicle to run is disconnected.

Further, when the pedal is further depressed from this position to the position 1b (position B), the clutch shift yoke 13 moves forward to the position 13b, and the PTO clutch is disengaged together with the running latch.

When the clutch pedal 1 hits the stopper 15, the clutch shift yoke 13 reaches the maximum operating position 13c.

The clutch lock lever 19 normally maintains a tilted position with its tip above the step 6 as shown by the solid line in FIG. When the clutch lever is pulled upward at position 21a and then the clutch pedal is released, the latch piece 21
The clutch pedal 1a is pressed from below to the position 1a where the clutch pedal is released and the latch is released.

The angle at which the locking piece 21 is attached to the main body of the clutch lock lever 19 is determined so that the locking piece 21 is oriented along the surface of the clutch pedal 1a at the position 21a.

Depress the clutch pedal a little more than the position 1b, raise the locking piece 22 of the clutch lock lever 19 to the position 22a where it engages with the clutch pedal, and then release the clutch pedal to lock the running latch and PTO clutch. The clutch pedal can be locked in the position where the clutch pedals are both disengaged.

At this time, the angle at which the latch piece 22 is attached to the main body of the clutch lock lever 19 is determined in advance so that the latch piece 22a follows the surface of the clutch pedal 1b.

(Effect of the invention) A latch for running in an agricultural tractor equipped with dual clutches for traveling and PTO, and a shared clutch pedal 1 for operating both clutches, and in which the depression portion at the upper end of the pedal 1 is disposed above the step 6. between the upper surface of the step 6 and the above-mentioned loading section; (a) Since a lever (lever 19 or lever 19 and lever 25) that can be engaged with the depressed portion at the upper end of pedal 1 is provided to lock the running latch or PTO clutch in the disengaged position, Position A where the latch for running is released and the latch for running is released when clutch pedal 1 is released when performing PTO work
The tractor can be mechanically held in position, allowing the operator to leave the tractor even during work.

This greatly improves work efficiency.

(b) A lever that can be engaged with the depression part of the pedal 1 is arranged between the top surface of the step 6 and the depression part.The operator, while riding on the step 6, depresses the pedal 1 with his foot while bending down. The levers 19 and 25 can be easily operated by hand and are easy to operate.

(c) Since the lever is arranged below the treadle part, which is the member that the lever engages, vibrations of the tractor, etc. can cause the lever to lock the pedal regardless of the operator's intentions. There is no risk of any major discrepancies occurring.

Therefore, since there is no such fear, there is no need to fix the lever, the pedal can be quickly and easily locked in position A, and there is no need to perform any special work after releasing the lock. .

Remove the locking piece 22 from the illustrated clutch lever 19, and separately attach a clutch lock lever 25 (Fig. 1) running on the spacer 17 to lock the clutch pedal position where both the latch and the PTO clutch are disengaged. You can also do it.

[Brief explanation of the drawing]

FIG. 1 is a partial left side view of an agricultural tractor to which the present invention is applied, and FIG. 2 is a schematic view taken along arrows 1--2 in FIG. 1...Clutch pedal, 19...Clutch lock lever-0

Claims (1)

[Scope of utility model registration request] Equipped with dual clutches for traveling and PTO, and a shared clutch pedal 1 for operating both clutches, the depression part at the upper end of the pedal 1 is pressed on the agricultural tractor located above the step 6, and the latch for running is set to the disconnection position. A lever that can be engaged with the depressed portion to lock the PTO clutch in the disengaged position, and a lever that can be engaged with the depressed portion to lock the PTO clutch in the disengaged position are arranged between the top surface of the step 6 and the depressed portion. Features a dual clutch clutch pedal lock device.