JP2001112308A - Mobile working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile working machine capable of freely transmitting an engine power from a transmission of a working machine through a transmission shaft to a spraying device and protecting the spraying device. SOLUTION: This mobile working machine is obtained by installing a transmission shaft 52 of the working machine extended from a transmission 3 and capable of transmitting the engine power to a working device 2 and driving the working device 2 along the nearly same height position between a left and a right machine frames 10 and 10 for supporting the transmission 3 in the mobile working machine equipped with front wheels 1a and rear wheels 1b, the transmission 3 capable of converting and transmitting the engine power to the front wheels 1a or rear wheels 1b and installed between the left and the right machine frames 10 and 10 extended in the front and rear directions of the machine body and capable of transmitting the engine power to the working device 2 and driving the working device 2 provided in a machine body frame 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a traveling work machine equipped with a working device such as a working vehicle for spraying various chemicals and fertilizers and a transplanting machine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a spraying work vehicle provided with a spraying device (working device) for spraying chemicals, fertilizers and the like on a field is provided on a machine frame 1 supported by a front wheel 1a and a rear wheel 1b. A transmission 3 which receives power from an engine (not shown) installed on the front side of the body frame 1 and drives the front wheels 1a via a front axle to shift the body 1 to run the body 1 and protrude rearward from the transmission 3 The rear working device 2 is configured to be driven by the shaft 31, and the PTO shaft 31 extends rearward along the abdomen below the body frame 1.

[0003]

However, since the PTO shaft is disposed in a state where the PTO shaft is exposed at the lower part of the abdomen, the aerial work vehicle having the above-described configuration has a relatively low abdominal height above the ground. Therefore, there is a disadvantage that the PTO shaft is liable to be damaged such as deformation or breakage due to contact with the ridge when traveling over the ridge. If the PTO shaft is arranged close to the vertical frame of the fuselage frame in order to solve this problem, the transmission structure must be enlarged to form a complicated transmission path, and the weight and cost must be reduced. There is a problem that it becomes too large to be practical.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has a front wheel 1a and a rear wheel 1b, and extends in the longitudinal direction of the body. A transmission 3 for transmitting engine power to the front wheel 1a or the rear wheel 1b is provided between the left and right machine frames 10 and 10, and a traveling operation for transmitting and driving a working device 2 installed on the body frame 1 from the transmission 3. In the machine, a work machine transmission shaft 52 that extends from the transmission 3 and drives the work device 2 is provided between the left and right machine frames 10 supporting the transmission 3 along substantially the same height. It is characterized by:

[0005] Further, the work machine transmission shaft 52 is driven via a transmission clutch mechanism 6 from a PTO shaft 31 provided on the transmission lower side of the main clutch 32a provided on the input shaft 32 for inputting engine power. I have.

Further, a PTO shaft 31 is provided above the transmission 3 and the PTO shaft 31 is provided above the transmission 3.
A work machine transmission shaft 52 is supported below the shaft 31 and both are transmitted by a transmission clutch mechanism 6 of a belt transmission clutch type.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a traveling work machine according to the present invention will be described below with reference to the drawings.

[0010] Reference numeral A denotes a spreading work vehicle as an example of a traveling work machine. The spreading work vehicle A has an engine and a driver seat (not shown) arranged in front of a body frame 1 having front wheels 1a and rear wheels 1b. At the rear of the machine frame, a spraying device 2 as a working device including a tank 20 for accommodating sprayed substances such as medicines and fertilizers, and a feeding mechanism for feeding and spraying the sprayed material inside is installed. It is configured to be able to spray the spray to the crops in the field.

Next, the frame and the transmission structure of the spraying vehicle A will be described.

First, referring to FIGS.
Is formed into a rectangular frame by connecting the front and rear of the left and right machine frames 10, 10 of a square pipe shape with a plurality of horizontal frames 11, 11..., And the front side thereof faces downward in a front view having left and right front wheels 1 a. It is connected to a rigid frame structure while being placed on a U-shaped front axle 12 and on a rear axle 13 having left and right rear wheels 1b in a rear middle part.

As shown in FIG. 2, the transmission 3 is installed between the left and right machine frames 10 and 10 and fixed to the front frame body 1 in front of and behind the front axle 12. At the rear end of the machine frames 10, 10, a tank 20 of the spraying apparatus 2 having a spouted material feeding mechanism 21 and a blower mechanism 22 below is installed.

The transmission 3 transmits power via a first PTO shaft 30 and a second PTO shaft 31, which will be described later. The spraying device 2 sprays the sprayed material uniformly from the spray pipe 23 extending left and right from below the tank 20 to a predetermined width by driving the feeding mechanism 21 and the blowing mechanism 22 (FIG. 2). It is configured to be able to.

Next, the transmission structure of the transmission 3 will be described with reference to FIGS.

As shown in FIGS. 3 and 4, the transmission 3 has a drum-shaped transmission case 3a in which a middle portion of the side surface is fixed to and supported by the machine frames 10, 10, and each transmission shaft is provided with a transmission shaft in the front-rear direction. Is rotatably supported.

In the rear view shown in FIG. 4, each of the transmission shafts has an input shaft 32 having a main clutch 32a (FIG. 5) which is input from the engine from the uppermost row in the left column, a first PTO shaft 30, and a front wheel output shaft 33. And place. The second PTO shaft 31, the speed change shaft 34, and the counter shaft 35 from the uppermost row in the right row.
And a rear wheel output shaft 36 are arranged. The first PTO shaft 30 and the second PTO shaft 3 projecting rearward from the transmission case 3a by meshing gears of adjacent shafts.
1 is configured to rotate at each work rotation, and the front wheel output shaft 33 and the rear wheel output shaft 36 are rotated at a vehicle speed rotation in a desired shift range.

That is, in this embodiment, the first PT
The O-axis 30 is linked to the engine speed to enable transmission of two-system switching between an engine-directed rotation range and a vehicle speed rotation range, and as shown in FIG. Transmission shaft 30a and belt transmission mechanism 30b
It is configured to be driven via a.

The second PTO shaft 31 (FIG. 5) has a forward / reverse rotation switching mechanism and can be directly connected to the engine at both forward and reverse rotations. To drive.

Also, a front wheel output shaft 33 and a rear wheel output shaft 36
Is rotated from the input shaft 32 via the speed change shaft 34 and the counter shaft 35 at a predetermined same speed stage so as to be rotatable in forward and reverse switching,
The front wheel 1a is driven by inputting to the front axle 12 from the front wheel output shaft 33 protruding forward, and the rear wheel output shaft 36 protruding rearward and the rear input shaft 13a protruding forward from the rear axle 13 (FIG. 2) and the traveling transmission shaft 15
To drive the rear wheel 1b.

The rear input shaft 13a is connected to a feed mechanism 21 via a chain drive mechanism 16 and a feed drive shaft 17.
Is being driven.

Next, the working machine transmission structure 5 will be described. The working machine transmission structure 5 projects at the same height as the second PTO shaft 31 to the side of the transmission case 3a and the side of the rear input shaft 13a. Bracket metal 5 provided
0, 51 (FIG. 2);
A belt 56 is wound around a pulley 53 (FIG. 3) mounted on the PTO shaft 31 and a pulley 55 mounted on the front side of the work machine transmission shaft 52, and the belt 56 is tightened to turn on / off the power. The transmission clutch mechanism 6 including the tension clutch 57 is provided.

Further, a blower transmission shaft 18 (FIG. 2) extending from a blower mechanism 22 detachably connected to a rear end of the work machine transmission shaft 52 via a joint portion is provided. The transmission is also enabled and disengaged by a main clutch 32a (FIG. 5) installed on the shaft 32. When the main clutch 32a is engaged, a transmission clutch of a belt transmission clutch type provided on the lower side of the transmission of the main clutch 32a. By the mechanism 6 (FIGS. 3 and 2), the power can be transmitted so that it can be independently turned on and off.

Therefore, when the main clutch 32a is engaged while the transmission clutch mechanism 6 is engaged, the spraying operation by the spraying device 2 can be performed simultaneously while the body 1 is running.

Further, when the transmission clutch mechanism 6 is turned off during this operation, the spraying device 2 can be stopped independently, so that the spraying operation can be stopped and the turning operation can be performed when the airframe 1 is turned.

Further, when the main clutch 32a is disengaged, there is an advantage that the running of the machine body 1 and the spraying device 2 can be stopped at the same time.

The transmission clutch mechanism 6 has a second PTO shaft 31 provided on the upper part of the transmission 3 and a work which is supported below the second PTO shaft 31 at a position adjacent to the vertical frame 10 on the side of the transmission 3. Machine transmission shaft 52
(FIGS. 2 and 3) are transmitted by a belt 56, and the belt 56 is configured as a transmission clutch mechanism 6 for turning on / off the power by a tension clutch 57. Can be freely provided so as to be arbitrarily close to each other at substantially the same height as.

As a result, there is an advantage that the working machine transmission shaft 52 can be protected between the two machine frames 10 and 10 and can be well protected along one vertical frame 10. is there.

The second PTO shaft 31 and the work machine transmission shaft 5
2, a sufficient belt winding distance can be secured, so that the tension clutch 57 can be easily installed with the transmission efficiency improved. Further, as shown by the dotted line in FIG. 2, the work implement transmission shaft 52 is disposed on the side of the transmission 3.
Can easily be extended to the front side of the fuselage 1 along the
The transmission of the working machine installed at the front of the vehicle can be simplified.

Further, the transmission 3 and the work machine transmission structure 5 configured as described above can fix the transmission 3 to the machine frames 10, 10 at a position as high as possible from the ground. Since the second PTO shaft 31 is not exposed below the abdomen of the fuselage 1, the height above the ground can be increased, and operations such as ridge crossing work and wetland work in which the body sinks greatly can be performed smoothly. And so on.

The feeding mechanism 21 of the working device shown in FIG.
Although a detailed structure is not described with respect to, since the transmission to the delivery mechanism 21 is taken out from the traveling transmission system, the delivery amount of the drug, fertilizer, implant, or the like is linked to the vehicle speed. Further, the transmission to the blower mechanism 22 is of course linked with the engine speed.

Although a more detailed structure is not shown, the transmission of the feeding mechanism 21 can be easily turned on and off by operating the transmission click mechanism 6, and the feeding mechanism 21 can be easily turned on and off during traveling work. As a result, the feeding operation can be quickly performed.

[0031]

As described above, according to the traveling work machine according to the present invention, the machine frame 10 supporting the transmission 3,
Since the work machine transmission shaft 52 is disposed along the same height during the period 10 and the spraying device 2 is driven, the ground clearance of the work machine transmission shaft 52 can be sufficiently increased, and The working machine transmission shaft 52 can be protected by the frames 10 and 10, and its damage and the like can be prevented well.

The work machine transmission shaft 52 is provided on the lower side of the main clutch 32a and is driven via the transmission clutch mechanism 6, so that the spraying device 2 is stopped at the same time as the traveling is stopped, or Spray device 2 when running stopped
Can be driven independently.

The working machine transmission shaft 52 is driven from the PTO shaft 31 provided above the transmission 3 via the transmission clutch mechanism 6, so that the transmission 3 can be simplified without increasing its size. Thereby, the work machine transmission shaft 52 can be freely installed at a desired position between the vertical frames 10, 10, and the spraying device 2 can be transmitted well.

[Brief description of the drawings]

FIG. 1 is a side view of a spraying work vehicle.

FIG. 2 is a plan view of FIG.

FIG. 3 is a rear view showing a configuration of a transmission and a work implement transmission structure.

FIG. 4 is a back sectional view showing the internal configuration of the transmission.

FIG. 5 is a plan sectional view showing a configuration of a transmission.

FIG. 6 is a side sectional view showing a configuration of a first PTO shaft and an example of its use.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body frame 1a Front wheel 2 Spraying device (working device) 3 Transmission 5 Work machine transmission structure 6 Transmission clutch mechanism 10 Machine frame 30 1st P
TO shaft 31 Second PTO shaft 32 Input shaft 32a Main clutch 52 Work machine transmission shaft A Spreading work vehicle (traveling work machine)

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomotaka Mishima 667, Iya-cho, Oaza, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B041 AA02 AA11 AB05 AC05 AC08 CA03 EA02 EA23 EB13 EC05

Claims (3)

[Claims] 1. A transmission 3 having a front wheel 1a and a rear wheel 1b and transmitting engine power to the front wheel 1a or the rear wheel 1b between left and right machine frames 10, 10 extending in the longitudinal direction of the body. And the transmission 3
In the traveling work machine for transmitting and driving the work device 2 installed on the body frame 1 from the above, the work machine transmission shaft 52 extending from the transmission 3 and driving the work device 2 is connected to the left and right machine frames 10 and 1.
A traveling work machine, which is provided between 0 and along the same height position. The work machine transmission shaft 52 is moved from the PTO shaft 31 provided on the transmission lower side of the main clutch 32a installed on the input shaft 32 for inputting engine power to the transmission clutch mechanism 6.
The traveling work machine according to claim 1, wherein the traveling work machine is driven via the vehicle. 3. A PTO shaft 31 is provided on an upper portion of the transmission 3 and a work machine transmission shaft 52 is supported below the PTO shaft 31 so that both are transmitted by a transmission clutch mechanism 6 of a belt transmission clutch type. The traveling work machine according to claim 1, wherein the traveling work machine is configured.