JPH09246U - Mobile farm gearbox - Google Patents

Abstract

(57) [Abstract] [Problem] PTO by one engine (6)
The PTO gear shift housing (16) and the travel gear shift housing (21) are also used for the structure for performing both driving and traveling drive, and for the structure for providing the two engines (6) to perform PTO driving and traveling driving separately. SOLUTION: A clutch housing (23) provided in an engine (6) is connected to either one or both of a PTO transmission housing (16) and a traveling transmission housing (21).

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a speed change device for a mobile agricultural machine such as a self-propelled speed sprayer that sprays chemicals to an orchard.

[0002]

[Problems to be solved by the device]

 Conventionally, there are a structure for driving the traveling output shaft and the PTO shaft by the same engine, and a structure for providing an engine for driving the traveling output shaft and an engine for driving the PTO shaft, respectively. Since it is necessary to construct the PTO shift housing and the travel shift housing, there is a problem that the manufacturing and parts management work can be simplified and the manufacturing cost cannot be reduced easily.

[0003]

[Means for Solving the Problems]

 Therefore, the present invention is one in which either or both of the PTO shift housing and the travel shift housing are connected to the clutch housing provided in the engine, and a structure for performing both the PTO drive and the travel drive by one engine, and The PTO drive housing and the travel drive housing of approximately the same shape can be used for the structure in which two engines are provided to drive the PTO drive and the travel drive separately, simplifying the manufacturing and parts management work and reducing the manufacturing cost. Can be easily achieved.

In addition, the PTO shaft and the traveling output shaft are arranged above and below the transmission main shaft, and the PTO shaft and the traveling output shaft are provided above and below the PTO transmission housing and the traveling transmission housing which are provided in front and rear in series. It can be easily extended.

In addition, the front and rear traveling output shafts connected to the front and rear propulsion shafts are extended to the front and rear sides of the lower portion of the traveling transmission housing that projects downward, and the PTO transmission housing and the traveling transmission housing are arranged substantially in series in the longitudinal direction. By arranging them, the structure of the airframe can be easily made compact.

In addition, a PTO shaft is provided so as to project from the upper side surface of the PTO gear shifting housing that extends above the coupling surface with the travel gear shifting housing, and the PTO gear housing is provided between the clutch housing and the gear shifting housing. The PTO shaft can be easily attached to the.

Further, the front traveling output shaft and the front propulsion shaft provided in the traveling transmission housing are extended to the lower surface side of the clutch housing, so that the front traveling output shaft and the front propulsion shaft are not limited by the front clutch housing. The shaft can be easily attached to the traveling speed change housing.

In addition, the PTO variable speed housing and the traveling speed change housing, which have the same flange shape as the coupling surface with the clutch housing, are configured to be removable, and the structure including both the PTO shaft and the traveling output shaft, the traveling output shaft A structure having only the PTO shaft and a structure having only the PTO shaft are alternatively configured, and the above-mentioned three types of output structures can be easily obtained by using substantially the same clutch housing, PTO shift housing, and travel shift housing. Therefore, it is possible to easily reduce manufacturing costs by sharing parts.

[0009]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a sectional view of a mission, and FIG. 2 is a plan view of a speed sprayer. In the figure, (1) is a chassis, (2) is a front wheel, (3) is a front axle, (4) is a rear wheel, ( 5) is a rear axle, (6) is an engine, (7) is a mission, (8) is a steering wheel, (9) is a driver's seat, (10) is a chemical tank, (11) is a spray nozzle section, and (12). Is the blower fan section.

The mission (7) includes a PTO gearshift housing (16) provided with a PTO gearshift mechanism (13), a PTO shaft (14), an auxiliary PTO shaft (15), and a rear side of the PTO gearshift housing (16). And a traveling clutch (17), a traveling transmission mechanism (18), traveling output shafts (19), (20), etc., and a front side of the PTO transmission housing (16). And a clutch housing (23) provided with a PTO clutch (22), and the clutch housing (23) is connected to the engine (6).

As shown in FIG. 3, the power of the engine (6) is transmitted to the flywheel (24a) of the mission (7), and the transmission spindle (24) with the wheel (24a) fitted at the tip by a spline. A PTO drive cylinder shaft (25) which is rotatably inserted in the PTO clutch (22) and interlockingly connected to the wheel (24a) is provided, and the drive cylinder shaft (25) and the PTO shaft (14) are provided. And the sub-PTO shaft (15) are interlockingly connected via the PTO speed change mechanism (13), and the fan driving force of the blower fan unit (12) is supplied from the PTO shaft (14) and the chemical liquid tank (10). While the spray pump driving force for pumping the chemical liquid to the spray nozzle portion (11) is taken out from the sub-PTO shaft (14), it is rotatably connected in series to the rear end of the main shaft (24) and the running clutch (1 7) is provided with a traveling input shaft (26) that is interlockingly connected to the main shaft (24), and the input shaft (26) and the traveling output shaft (19) (20) are interlocked via the traveling transmission mechanism (18). The front and rear axles (3) and (5) are connected to drive power from the traveling output shafts (19) and (20) through the front and rear propulsion shafts (27) and (28) to drive the front and rear wheels (24). Is configured as follows.

The connecting surfaces (A) and (B) of the traveling speed change housing (21) and the clutch housing (23) with respect to the PTO speed change housing (16) have the same flange shape, and the traveling speed is changed as shown in FIG. The transmission (7) can be transformed into a transmission (7a) in which the clutch housing (23) is directly connected to the front side of the speed change housing (21). At this time, the rear portion of the PTO drive cylinder shaft (25) is Dedicated transmission that is spline-fitted to the dedicated input shaft (26a) and is inserted in the front part of the PTO drive cylinder support shaft (25) so that the rear end is rotatably connected in series to the front end of the input shaft (26a). The flywheel (24a) is spline-fitted to the tip of a main shaft (not shown), and the power from the engine (2) is connected and disconnected using the PTO clutch (22). It is configured as follows.

As is clear from the above, either one or both of the PTO transmission housing (16) and the traveling transmission housing (21) are connected to the clutch housing (23) provided in the engine (6) to form one clutch housing (23). The structure in which both the PTO drive and the travel drive are performed by the engine (6) and the structure in which the two engines (6) are provided to perform the PTO drive and the travel drive separately are provided in the PTO variable speed housing (16) having substantially the same shape specifications. ) And the traveling speed change housing (16) are also used to simplify the manufacturing and parts management work and reduce the manufacturing cost. The PTO shaft (14) and the traveling output shaft are vertically arranged with the transmission main shaft (24) interposed therebetween. (19) (20) are arranged, and P T is provided above and below the PTO shift housing (16) and the travel shift housing (21) provided in series in front and rear. The O shaft (14) and the traveling output shafts (19) (20) are configured to extend. Further, the front and rear traveling output shafts (19) and (20) connected to the front and rear propulsion shafts (27) and (28) are extended to the front and rear sides of the lower portion of the traveling transmission housing (21) which is projected downward to extend the PTO transmission housing (16). The traveling speed change housing (21) is arranged substantially in series in the front-rear direction so that the body structure can be made compact.

Further, a PTO shaft (14) is provided on the upper side surface of the PTO variable speed housing (16) extending above the connecting surface with the travel speed-changing housing (21) so that the clutch housing (23) and the travel can be achieved. The PTO shaft (14) is attached to the PTO speed change housing (16) provided between the speed change housings (21), and the front travel output shaft (19) and the front propulsion shaft (27) provided in the travel speed change housing (21) are connected to the clutch. The front traveling output shaft (19) and the front propulsion shaft (27) are attached to the traveling transmission housing (21) without being restricted by the front clutch housing (23) by extending to the lower surface side of the housing (23). Is configured as follows. In addition, the PTO gear shift housing (16) and the travel gear shift housing (21), which have the same flange shape as the coupling surface with the clutch housing (23), are detachable, and the PTO shaft (14) and the travel output shaft ( 19) and (20), a structure including only the traveling output shafts (19) and (20), and a structure including only the PTO shaft (14). ) And the PTO speed change housing (16) and the traveling variable speed housing (21), the above three types of output structures can be easily obtained, and the manufacturing cost can be reduced by sharing the parts.

The present embodiment is configured as described above. The engine (6) is started, the traveling clutch (17) is turned on, and the vehicle is traveling at a speed corresponding to the gear position while the PTO clutch is being engaged. (22) is operated to drive the spray pump and blower fan to spray the chemicals on the trees in the orchard.

In addition to the speed sprayer of the above-described embodiment, there is one in which the running portion and the working portion (spreading portion) are driven by different engines. In this case, the running and working portions are provided for each engine. The mission can be formed by changing the configuration of the mission (7) of the above embodiment.

That is, as shown in FIG. 4, the PTO transmission housing (16) and the traveling clutch (17) are removed from the transmission (7), and the direct clutch housing (23) is connected to the front side of the traveling transmission housing (21). By doing so, it can be used as a traveling mission (7a) for transmitting the power of the traveling engine only to the traveling section, while as shown in FIG. 5, the transmission (7) is used to move the traveling transmission housing (21) and the traveling clutch ( By removing 17), it can be used as a work (PTO) mission (7b) that transfers the power of the work engine only to the work section.

As described above, the unified PTO gear shift housing (16), traveling gear shift housing (21), and clutch housing (23) perform different missions depending on whether the engine is driven by a single unit or a plurality of units. It is economical because each can be configured.

[0019]

[Effect of the invention]

 As is apparent from the above embodiments, the present invention is one in which either or both of the PTO transmission housing (16) and the traveling transmission housing (21) are connected to the clutch housing (23) provided in the engine (6). A PTO variable speed housing with substantially the same shape in a structure in which one engine (6) performs both PTO drive and traveling drive and a structure in which two engines (6) are provided to perform PTO drive and traveling drive separately. (16) and the traveling speed change housing (16) can be used in common, and simplification of manufacturing and parts management work and reduction of manufacturing cost can be easily achieved.

Further, the PTO shaft (14) and the traveling output shafts (19) (20) are arranged above and below the transmission main shaft (24), and the PTO speed change housing (16) is provided in front and rear in series. Also, the PTO shaft (14) and the travel output shafts (19) (20) can be easily extended above and below the traveling speed-change housing (21).

The front and rear traveling output shafts (19) and (20) connected to the front and rear propulsion shafts (27) and (28) are extended on the front and rear sides of the lower portion of the traveling transmission housing (21) that projects downward. By arranging the PTO gear shift housing (16) and the traveling gear shift housing (21) substantially in series in the front-rear direction, it is possible to easily make the airframe structure compact.

Further, the PTO shaft (14) is provided so as to project on the upper side surface of the PTO variable speed housing (16) extending above the coupling surface with the traveling speed change housing (21), and the clutch housing (23) and traveling The PTO shaft (14) can be attached to a PTO speed change housing (16) provided between the speed change housings (21).

Further, the front traveling output shaft (19) and the front propulsion shaft (27) provided in the traveling transmission housing (21) are extended to the lower surface side of the clutch housing (23), and the front clutch housing (23 The front traveling output shaft (19) and the front propulsion shaft (27) can be easily attached to the traveling speed change housing (21) without being restricted by (1).

Further, the PTO speed change housing (16) and the travel speed change housing (21), which form the coupling surface with the clutch housing (23) in the same flange shape, are detachably configured, and the PTO shaft (14) and the travel speed are set. The structure having both the output shafts (19) and (20), the structure having only the traveling output shafts (19) and (20), and the structure having only the PTO shaft (14) are alternatively configured, and are substantially the same. By using the clutch housing (23), the PTO speed change housing (16), and the travel speed change housing (21), it is possible to easily obtain the above-mentioned three types of output structures and easily reduce manufacturing costs by sharing parts. Is something that can be done.

[Brief description of drawings]

FIG. 1 is a sectional view of a mission.

FIG. 2 is an explanatory plan view of a speed sprayer.

FIG. 3 is an explanatory diagram of transmission of a mission.

FIG. 4 is a cross-sectional view of a traveling mission.

FIG. 5 is a cross-sectional view of a work (PTO) mission.

[Explanation of symbols]

 (6) Engine (14) PTO shaft (16) PTO speed change housing (19) Front travel output shaft (20) Rear travel output shaft (21) Travel speed change housing (23) Clutch housing (24) Transmission main shaft (27) Forward propulsion Axis (28) Rear propulsion axis

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masafumi Tsujida 428 Enami, Okayama, Okayama Prefecture, Seirei Industry Co., Ltd. Within

Claims (6)

[Utility model registration claims] 1. A transmission device for a mobile agricultural machine, wherein either or both of a PTO transmission housing and a traveling transmission housing are connected to a clutch housing provided in an engine. 2. The transmission device for a mobile agricultural machine according to claim 1, wherein a PTO shaft and a traveling output shaft are arranged above and below the transmission main shaft. 3. The transmission device for a mobile agricultural machine according to claim 1, wherein a front and rear traveling output shaft connected to the front and rear propulsion shaft is extended to the front and rear sides of the lower portion of the traveling transmission housing that projects downward. 4. The transmission device for a mobile agricultural machine according to claim 1, wherein a PTO shaft is provided so as to project from an upper side surface of the PTO transmission housing extending above a connecting surface with the traveling transmission housing. 5. The transmission device for a mobile agricultural machine according to claim 1, wherein the front traveling output shaft and the front propulsion shaft provided in the traveling transmission housing are extended to the lower surface side of the clutch housing. 6. A structure including a PTO shaft and a travel output shaft, wherein a PTO gear housing and a travel gear housing having a coupling surface with a clutch housing formed in the same flange shape are detachable, and only a travel output shaft is provided. The mobile agricultural machine according to claim 1, wherein a structure including the PTO shaft is selectively configured.