JPS6242582Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operation pedal structure for a transport vehicle that has a simple structure and reliable operation.

In a forestry transport vehicle equipped with a winch, it is desirable that the driving brake pedal, clutch pedal (hereinafter simply referred to as brake pedal or clutch pedal), winch clutch pedal, etc. be effectively interlocked. In particular, since such transport vehicles often travel on slopes with poor ground conditions, various operating levers and pedals must be operated accurately.

Therefore, this invention solves this problem by interlocking the brake pedal and clutch pedal for driving, as well as interlocking the clutch pedal for the winch.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

Figure 1 is a side view of the transport vehicle according to this invention, Figure 2
The figure is also a plan view, but this transport vehicle has a loading platform 2 built on top of a crawler-type traveling device 1, a control room 3 in the front part of the loading platform 2, and a cockpit 3 located in the middle of the lower part of the loading platform 2. It is equipped with 4 winches. Incidentally, the transmission of this transport vehicle is often of the side clutch type as in combine harvesters, etc., and therefore, two side clutch levers 5, 5, a brake pedal 6, a clutch pedal 7, etc. are provided in the cockpit 3.

By the way, the first configuration of this invention, as shown in FIG. 3, is to provide an interlocking plate 8 on the brake pedal 6 so that the clutch pedal 7 always operates when the brake pedal is depressed, so that both of them are connected. It is linked. Note that it is possible to operate only the clutch pedal 7 in the opposite manner.

Next, in the second configuration, this clutch pedal 7 is configured to operate a clutch lever 10 for the engine using a cam roller structure 9.

To illustrate this, Fig. 4 is a sectional view of the transmission, Fig. 5 is a side view of the transmission showing the side clutch, and Fig. 6 is a side view of the transmission showing the brake. Two final cases 11b, 11b
The power transmitted to the input shaft 12 of the center case 11a is transmitted to the output shafts 15, 15 via intermediate shafts 13, 14. output shaft 15,
15 and the input shafts 16, 16 of the final cases 11b, 11b are connected by couplings 17, 17, and finally the left and right drive sprockets 18, 18
It is now possible to convey the information to (See FIG. 4) Side clutches 19, 19 and brakes 20, 20 are incorporated into the intermediate shaft 14. That is, the clutch gears 22, 22, which are slidably and securely fitted to the clutch gear 21, which is loosely fitted to the intermediate shaft 14 so as to rotate at all times, are engaged and disengaged by the forks 23, 23. The forks 23, 23 are operated by levers 24, 24, which are performed by link rod mechanisms 25, 25 (see FIG. 5). Further, the brakes 20, 20 are also similar, and discs 26, 26 are tightly fitted to the intermediate shaft 14.
This is done by tightening the shoes 27, 27 using the levers 28, 28 and the link/rod mechanism 29 (see FIG. 6).

FIG. 7 is an operation system diagram of the side clutches 19, 19, and this link rod mechanism 25, 2
5 is connected to the aforementioned side clutch clutch levers 5, 5 which can rotate around the support shaft 30, and when the driver pulls these levers 5, 5 backward, the side clutch 19 on that side , 19 are adapted to be cut.

FIG. 8 is an operation system diagram of the brakes 20, 20. The brake pedal 6 described above is also connected to this link/rod mechanism 29, so that when the brake pedal 6 is depressed, both brakes 20, 20 are activated. It's getting old. As described above, this brake pedal 6 is interlocked with a clutch pedal 7, and the clutch lever 10 for clutch disengagement is installed near the engine via a cam roller structure 9 and a link rod mechanism 31. It is connected to.

FIG. 9 is an enlarged side view showing the operating states of the brake pedal 6 and clutch pedal 7, and these pedal shafts 32 are provided with a cam 33.
The roller 3 slidingly contacts the working surface 33a of this cam 33
The arm 35 provided with 4 is rotatable around a support shaft 36, and the other end of the arm 35 and the link rod mechanism 31 described above are connected by a pin 37.

On the other hand, a winch clutch pedal 38 is also provided rearward in the rear of the cockpit 3, and its link/rod mechanism 39 is connected by the link/rod mechanism 31 and the elongated hole structure 40 on the downstream side of the cam roller structure 9. Concatenated. That is, a long hole 42 is formed in the link 41 constituting the link/rod mechanism 31, and a link/rod is also formed at the front position of this long hole 42.
The plate 43 that constitutes the rod mechanism 39 is attached to the pin 4.
It is connected by 4. As a result, when the winch clutch pedal 38 is depressed, the link/rod mechanism 31 is activated immediately;
Even if the brake pedal 6 or the clutch pedal 7 is depressed, the link rod mechanism 39 and therefore the winch clutch pedal 38 will not operate. In addition,
In the above configuration, the working surface 33a of the cam 33
The winch clutch pedal 38 has a constant radius R that prevents the arm 35 from rotating beyond a certain angle when the arm 35 is rotated beyond a certain angle. A tension roller 46 for turning on and off is provided.

As described above, this invention has the above-mentioned configuration and operates, so the following effects can be expected.

First, in the past, separate operation systems were used to operate the clutch lever 10, but with this invention, the link between the two
Since the rod mechanisms 31 and 39 are joined in the middle, the structure is simplified accordingly.

Next, even when the brake pedal 6 is depressed, the clutch pedal 7 is linked, which makes the operation easier. In particular, this type of interlocking configuration is extremely significant when maneuvering on rough roads in forests.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention. Figure 1 is a side view of the carrier, Figure 2 is a plan view, and Figure 3 is a side view of the vehicle.
Figure 4 is a front view showing the relationship between the brake pedal and clutch pedal, Figure 4 is a side view of the transmission, Figure 5 is a side sectional view of the transmission showing the side clutch, Figure 6 is a side sectional view showing the brake,
FIG. 7 is an operation system diagram of the side clutch, FIG. 8 is an operation system diagram of the brake, and FIG. 9 is an enlarged side view of the main part of FIG. Code, 6... Brake pedal, 7... Clutch pedal, 9... Cam roller structure, 31... Link rod mechanism, 38... Clutch pedal for winch, 40... Long hole structure.

Claims (1)

[Scope of utility model registration request] Brake pedal 6 and clutch pedal 7 of the transport vehicle
are interlocked by an interlocking plate 8, and a link or rod mechanism 31 whose one end is linked with the clutch pedal 7 and whose other end is linked with the on/off operation of the fuselage clutch.
One end is connected to the winch clutch pedal 38, the other end is the link, a link connected to the rod mechanism 31, and the rod mechanism 39 are arranged in series, and both of these are connected at their respective ends,
In contrast to the long hole 42 formed in the link 41 that constitutes the former link and rod mechanism 31, this long hole 42
At the end position of the latter link and the rod mechanism 39, the latter link and the rod mechanism 3
A pin 44 attached to a plate 43 constituting 9
Due to the articulated connection, when the two links and the rod mechanisms 31 and 39 act in the retracting direction due to the operation of the clutch pedal 7, the former link and the rod mechanism 31 can be moved independently by sliding in the elongated hole 42. When the winch clutch pedal 38 is operated and both links and the rod mechanism act in the tensile direction, the end position of the pin 44 is restricted so that the two links and the rod mechanism operate as one unit. The operation pedal structure of the transport vehicle.