JPS6328771A - Monolever device for working vehicle - Google Patents

Abstract

PURPOSE:To simplify a monolever device in a control stand, to compact the control stand and to eliminate a waste space, by a method wherein a side brake interlocking member is positioned integrally to the monolever in a manner to be protruded toward the side reverse to the pivot support part. CONSTITUTION:The supper surface of a control stand 20 forms a control panel 21, and a monolever 22 is erected on the panel 21. A side brake interlocking member 62 is formed integrally to monolever 22 of a monolever device M in a manner to be protruded to the side reverse to the pivot support. Further, a monolever 22 and a side clutch switching means 67 are united integrally to form a subassy 32, a side brake interlocking member, protruded from the lower part of the sub assy 32 is engaged with a side brake actuating means 33, formed separately from the sub assy 32, to mount and demount the sub assy 32 from a position above the control stand 20. This constitution facilittes a work of mounting and repairing the monolever 22 and switches.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a monolever device in a work vehicle such as a combine harvester, and more particularly to an installation structure for a monolever device for switching and operating a side clutch and a side brake.

(b) Conventional technology In general, work vehicles such as combines use left and right side clutch levers to operate the left and right side clutch/brake devices. A monolever consisting of a single lever that can be operated is provided on the operation panel, and when the monolever is tilted to the left or right by a predetermined angle, the side clutch is disengaged via a solenoid valve, and when the monolever is further tilted by a predetermined angle or more, a variable A monolever device has been proposed that controls the left and right brakes by operating a relief valve.

(l→ Problems to be Solved by the Invention) However, in the monolever device described above, the switch for switching the monolever and the side clutch solenoid valve is installed separately on the operation panel, so it is difficult to install or repair the monolever etc. In this case, the monolever and switches must be installed or removed separately from the operation panel, making the work time-consuming and troublesome.Furthermore, the operation member and the control member for operating the variable relief valve for the handbrake are required. Since the monolever is connected via a rod, etc., the monolever cannot be removed unless the rod, etc. is removed, and the connected rod, etc. must be adjusted each time when the lever is installed. However, this makes the work cumbersome and makes maintenance difficult.

B) Means for Solving the Problems The present invention aims to solve the above-mentioned problems. For example, as shown in FIGS. 1 and 2, the monolever 22 is provided with a The side brake interlocking member 62 is integrally formed by protruding to the side, and the monolever 2
2 and the side clutch switching stage 67 are integrally constituted as a subassembly 32. Furthermore, the subassembly 32
A handbrake interlocking member 62 protruding downwardly engages with a handbrake operating means 33 configured separately from the sub-assembly 32, so that the sub-assembly 32 can be attached and removed from above the operation console 20. It is characterized by its composition.

(E) Operation Based on the above-described configuration, when attaching the subassembly 32 to the operation console 20 during assembly, etc., insert the handbrake interlocking member 62 downward into the operation console 20 from above, and connect the interlocking member 62 to the operation console 20. engages the actuating means 33; Then, in this state, the subassembly 32 is moved to the operation console 2.
Fixed to 0.

As a result, when the monolever 22 is tilted in either the left or right direction when steering the work vehicle 1i71, the side clutch switching means 67 is activated and the side clutch is disengaged. Then, by further tilting the monolever 22 in the same direction, the handbrake actuating means 3
3 is actuated by the handbrake interlocking member 62, thereby braking and operating the handbrake.

Further, when removing the monolever 22 for maintenance or the like, the fixation of the subassembly 32 is released, and the subassembly 32 is further lifted above the operation console 20 to separate the handbrake interlocking member 62 from the handbrake actuating means 33. As a result, the monolever 22 and the side clutch switching means 67 are removed together as a subassembly 32 from the operation console 20.

(F) Embodiments Hereinafter, embodiments in which the present invention is applied to a combine harvester will be described with reference to the drawings.

As shown in FIG. 13, the combine 1 has a body 3 supported by a crawler 2, and one side of the body includes a driver's seat 5, a grain tank 6, and an engine 7 from the front.
is disposed, and an automatic threshing aI9 is disposed on the other side. Furthermore, a pre-processing section 10 is supported in the front of the machine body 3 so as to be able to rise and fall freely, and a large number of dividers 11, a raking device, a cutting blade, a culm conveying device, etc. are arranged in the pre-processing section 10. In addition, a mission case 12 is mounted inside the cabin of the driver's seat 5. The driver's seat 5 consists of a driver's seat frame 15 fixed on the fuselage frame 13.
Furthermore, a step surface 1 is provided on the front part of the frame 15.
6 is fixed, and a brake pedal 17 which also serves as a parking brake is installed at the front end of the frame 15.
A seat 19 is installed at the rear of the vehicle via a seat frame.

On the other hand, an operation console 20 is erected above the front part of the driver's seat frame 15, and an operation panel 21 is provided on the upper surface of the operation console 20.
It has become. Further, the operation panel 21 has a monolever 22 erected on its right side, and is also provided with various operation switches, meters, and display lamps, and a manual side clutch is installed on both sides of the operation panel 20. lever
23° 23 are installed so that they can rotate freely in the longitudinal direction of the fuselage, and are normally prevented from rotating by stoppers.

Furthermore, in some cases, as shown in FIG.
At the center of the upper part facing the seat 19 is a panel 20.
A convex portion 20b is formed so as to extend a by a predetermined amount,
A speaker 25 for voice monitoring is installed within the convex portion 20b, and a net 26 is placed over the speaker 25. Therefore, the speaker 25 is positioned between the feet of the operator while sitting on the seat 19 and does not get in the way when operating the pedals.
It is installed so that it does not get in the way when the operator gets in and out of the driver's seat, and is also placed in front of the driver's seat 5 and has a net 26 to prevent dust generated during mowing work from entering the speaker 25. There's nothing to do.

In some cases, the manual side clutch lever 23 located behind the monolever 22 may be
As shown in FIG. 10, a curved portion 23b recessed by a predetermined amount is formed in the upwardly facing central portion of the grip portion 23g. When operating the monolever 22, the curved portion 23b
Place your arm on the wall and move your wrist in a comfortable position to move the monolever 22.
It may be configured so that it can be operated.

Further, the brake pedal 17 that also serves as a parking brake is
As shown in FIG. 11, a wire W is rotatably supported by a pin 26 on the fuselage 3, and the other end of the wire W is attached to the rear part of the fuselage, with one end connected to the handbrake of the mission case 12. Further, the pedal 17 is biased toward the rear of the body 3 by a spring or the like. In addition, the pedal 1
A lock pin 27 is fixed to one side of the fuselage 3 facing forward, and the lock pin 27 is connected to a notch 29a formed in the lock play 1/29 rotatably installed on the fuselage 3.
The brake pedal 17 is engaged with the brake pedal 17 to fix the brake pedal 17 at the appropriate depressed position.

A manual lever 30 is rotatably installed inside the operation console 20 and protrudes toward the driver's seat 5. At one end of the lever 30, there is a link mechanism 31 connected at one end to the lock plate 29. The ends are pivoted. Therefore, by rotating the manual lever 30 upward, the link @1j1
31, the brake pedal 17 can be used as a normal brake pedal without the lock pin 27 being engaged with the notch 29a. As shown in the figure, by rotating the manual lever 30 downward, the link mechanism 3
1, the lock pin 27 is engaged with the notch 29a of the lock plate 29 when the brake pedal 17 is depressed. can be used as a parking brake by pulling the wire W and holding the handbrake in a braked/operated state.

On the other hand, monolever device M operated by monolever 22
As shown in FIGS. 1 and 2, the monolever 22 is provided with a sub-assembly 32 at its rotating base, which includes a pin, a spring, a rotary switch, etc. integrally with the lever 22. A wire operating member 33 having an engagement notch 33a formed above is supported by a pin 35 so as to be rotatable in the lateral direction of the machine body. A rotating plate 36 is installed below the operating member 33 with one end rotatably supported by the operating table 20, and pins are provided from both ends of the wire operating member 33 to the other end of the plate 36. 37 has a wire 39a,
39 b are stretched in a 7-figure shape. Furthermore, a wire 39a is attached to the pin 37.

One end of a wire 40 is attached together with 39b, and the other end of the wire 40 is connected to one end of a valve operating member 42. The operating member 42 is connected to the wire 4
0, the variable relief valve 41, which variably controls the throttle of the side clutch/brake actuator made of a double-acting cylinder, is configured to press its plunger 41a to perform throttle control.

A pipe 46 is fixed via a fixing member 45 above the support member 43 erected inside the operation console 20, and a shaft 47 fitted into the pipe 46 has one end of the manual side clutch lever 23. is fixed via a bracket 49. Furthermore, brackets 5o and 51 are fixed to both ends of the pipe 46, and
0.51, a sub-assembly mounting plate 52 is vertically installed and fixed to the fuselage, and a lever bracket 53 constituting the sub-assy 32 is fixed to the mounting plate 52 with a plurality of bolts 55. There is.

The lever bracket 53 is shown in FIG. 3(a).

As shown in (b) and (c), a pivot pin 56 is erected and fixed approximately at the center thereof, and an oval-shaped fitting portion 56a is formed at its tip. Further, a stopper pin 57 is fixedly provided below the pin 56. Furthermore, a bolt hole 56b is formed at the center of the fitting portion 56a, and a plurality of bolt holes 57 are formed at the end of the bracket 53.
3a... are bored, and the stopper bin 57
A notch 53b is formed below.

Further, as shown in FIG. 4, the monolever 22 has a pivot plate 59 fixed to its lower end,
A lever boss portion 60 is fixed to the pivot plate 59 at approximately the center thereof, and a stopper pin 61 is installed in contact with the lower end portion of the monolever 22. Furthermore,
An engagement pin 62 is fixed on the opposite side of the pivot plate 59 from the monolever 22 so as to be in line with the lever 22.

As shown in FIGS. 1 and 2, the subassembly 32 has the lever bracket 53 fixed to the assembly mounting plate 52 with a plurality of bolts 55, and furthermore, the lever bracket 53 is fixed to the assembly mounting plate 52 with a plurality of bolts 55. The lever boss portion 60 of the monolever 22 is fitted into the pin 56, and the lever 2
The lower engagement pin 62 passes through the notch 53b of the lever bracket 53 and engages with the engagement notch 33a of the wire operating member 33. Further, the lever boss portion 60 is provided with a spring 63 (see FIGS. 5(al) and (bi)).
and spring plates 65 and 66 are fitted,
Furthermore, the plays 1-65 and 66, as shown in FIG.
It consists of two plate members of the same shape, and both ends of the spring 63 are pushed into spring holes 65a and 66a formed at one end of each. The stopper bin 61 of the monolever 22 and the stopper bin 57 of the lever bracket 53 have respective key portions 65 b, 66 b, 65 c on the spring plates 65 and 66 biased by the spring 63.
66 c is in contact with the monolever 22.
is configured to be in a neutral position under normal conditions. Further, a rotary switch 67 (FIG. 7(a)
1, fbl) is inserted into the fitting hole 67a, and furthermore, the fitting part 56a at the tip of the pivot pin 56 has an oval-shaped hole drilled in the switch mounting plate 69 (see Fig. 8). 69
a is fitted, and the mounting plate 6 is attached to the pivot pin 56 by inserting the bolt 70 into the bolt hole 56b of the bracket pivot pin 56.
9 is fixed. In addition, bolts 71 are pushed into and fastened into the long holes 69b drilled in the switch mounting plate 69 and the bolt holes 67b formed in the rotary switch 67.
2, spring 63, etc. are prevented from coming off. In this state, the rotary switch 67 connects its pin 67c (see FIG. 7) to the pivot plate 5 of the monolever 22.
The rotary switch 67 is fitted into a bottle hole 59a (see FIG. 4 (al)) drilled in the rotary switch 9, and the rotary switch 67 is accordingly switched and actuated in response to the tilting operation of the monolever 22.

Since the present embodiment has the above-described configuration, when the operator operates the combine harvester 1 to perform reaping work, when the monolever 22 is tilted, for example, to the right, the lever 22 is rotated by the spring +J angle. The pivot pin 5 resists the biasing force of the spring 63 received via the plate 66.
Rotates around 6.

Then, the protrusion 67c of the rotary switch 67 is rotated clockwise in FIG. 7 by the monolever 22, thereby energizing the side clutch solenoid valve and disconnecting the right clutch. Subsequently, when the monolever 22 is further tilted in the same direction, the wire operating member 33 is rotated by the engagement pin 62 to pull the wire 39a. As a result, the rotating plate 36 is rotated upward and pulls the wire 40, thereby rotating the valve operating member 42 toward the plunger 41a, and presses the plunger 41a to perform variable aperture control on the variable relief valve 41. As a result, the actuator consisting of a double-acting cylinder is further actuated, the right side brake is braked and activated, and the aircraft body 3 is turned to the right. Also, when the monolever 22 is tilted to the left, the left side clutch is disengaged and the handbrake is braked and activated in the same manner as when the monolever 22 is tilted to the right, causing the aircraft 3 to turn to the left. .

On the other hand, when removing the monolever device M from the operating table 20 for maintenance or the like, first loosen and remove the plurality of bolts 55 fixing the lever bracket 53 to the subassembly mounting plate 52, and then lift the monolever 22 upward. Then, the subassembly 32 released from the operation console 20 is lifted upward together with the lever 22, the engagement pin 62 is separated from the wire operation member 33, and the subassembly 32 is removed from the operation console 20. . In this state, the rotary switch 67, the neutral position of the monolever 22, etc. are adjusted. Furthermore, after said adjustment, subassembly 3
2 is attached to the operation console 20 again, but at this time, the engaging pin 62 is directed downward from the operation panel 21 to the operation console 20.
Push into 0.

Then, the engagement pin 62 is engaged with the engagement notch 33a of the wire operating member 33, and the bolt 55 is again engaged in this state.
The lever bracket 53 is fixed to the subassembly mounting plate 52 by... As a result, the monolever device M is restored again, and the monolever 22 can be operated to operate the side clutch and the handbrake.

(g) As described in detail, according to the present invention, the monolever 22, which integrally constitutes the handbrake interlocking member 62, and the side clutch switching round means 67 are integrally constituted as the subassembly 32, The interlocking member 62 protruding downward from the assembly 32 is engaged with the handbrake operating means 33,
Since the sub-assembly 32 can be installed and removed from above the operation console 20, the monolever 22 can be removed during assembly.
The subassembly 32 can be easily assembled from above the operation console 20, and the subassembly 32 can be easily removed from the operation console 20 during maintenance, and the side clutch switching round means 67 and the monolever 22 can be moved to the neutral position. adjustment and parts replacement, etc. can be easily performed, and when repairing the handbrake operating means 33, the work can be done separately from the subassembly 32 side. This improves work efficiency and eases maintenance. can be improved. Furthermore, by integrating the side clutch switching means 67 into the monolever 22, the structure of the monolever device M inside the operating console 20 can be simplified, and therefore the operating console 20 can be made more compact, thereby saving wasted space from the fuselage 3. can be omitted.

Further, the subassembly 32 is attached to the support member 46 that supports the WI round manual side clutch lever 23 on the operation console 20.
By configuring the sub-assembly 32 to be fixed and supported, the existing support member 46 for supporting the manual side clutch lever 23 can be used as is to attach the sub-assembly 32, thereby making the attached state of the sub-assembly 32 firm. At the same time, since no special mounting structure is required, costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view showing the monolever device according to the present invention, Figure 2 is its front view, Figure 3 (al is a front view showing the lever bracket, Figure 3 (bl is its bottom view, Figure 3 ( C)
1 is a side sectional view from outside, FIG. 4 (, 1 is a front view showing the monolever in detail, FIG.
) is a front view showing the spring, Fig. 5 (bl is a side view thereof, Fig. 6 is a front view showing the spring plate, Fig. 7 (al is a front view showing the rotary switch in detail, Fig. 7 f)
bl is a plan view thereof, FIG. 8 is a front view showing the switch mounting plate, FIG. 9 is a perspective view showing the driver's seat in detail, and FIG. 10(a)
10 is a front view showing the grip part of the manual side clutch lever, FIG.
FIG. 12 is a side view showing its operating state. and,
FIG. 13 is an overall side view showing a combine harvester to which the present invention is applied. DESCRIPTION OF SYMBOLS 1...Work vehicle (combine harvester), 20...Operation console, 22...Monorever, 32...Subassy, 33・Handbrake actuation means (
wire operating member), 62... side brake interlocking member (engaging pin), 67... side clutch switching or means (rotary switch), M... monolever device.

Claims (2)

[Claims] (1) A side clutch and a side brake are provided, and the side clutch switching means is operated by tilting a single monolever installed on the operation console to switch the side clutch, and the side clutch is braked by further tilting operation of the lever. In a working vehicle configured to brake and operate the handbrake by operating an actuating means, the monolever is integrally formed with a handbrake interlocking member protruding from the opposite side of the pivot portion thereof, and the monolever and the side brake are integrally formed. The clutch switching means is integrally configured as a sub-assembly, and the handbrake interlocking member protruding downward from the sub-assembly is engaged with the handbrake operating means configured separately from the sub-assembly, A monolever device for a work vehicle, wherein the sub-assembly can be attached and removed from above the operation platform. (2) A monolever device for a work vehicle, wherein the sub-assembly is fixed to and supported by a support portion that supports a manual side clutch lever provided on the operation console.