JP4861108B2 - Mowing machine - Google Patents

Description

  The present invention provides a cutting operation in which a cutting pre-treatment device is attached in front of a traveling machine body, and a cutting transmission device is provided in the traveling machine body to transmit an engine, a traveling mission, and transmission power to a power input unit of the cutting pre-processing device. Related to the machine.

  The cutting gearbox was provided in the mission case (see Patent Document 1).

JP 2006-77811 A (paragraph number [0014] and FIG. 2)

  Since the mowing transmission was provided in the transmission case, the selection of the free installation position of the mowing transmission was restricted. Therefore, the transmission structure from the cutting gearbox to the power input unit of the cutting pretreatment device becomes large, and the transmission system from the engine to the transmission case and the transmission system from the cutting gearbox to the power input unit of the cutting pretreatment device However, the transmission system may be congested because both are arranged with the mission case as the starting point (the engine power is transmitted to the mission case (traveling mission), and the power of the cutting pretreatment device is transmitted from the mission case). State transmitted to the input unit).

  An object of the present invention is to provide a mowing machine capable of eliminating the congestion of the transmission system while performing a free installation position selection of the mowing transmission.

〔Constitution〕
A characteristic configuration of the invention according to claim 1 is that a pre-cutting processing device is attached in front of the traveling machine body, a traveling mission for transmitting power to the engine and a crawler traveling device to the traveling machine body, and transmission power to the cutting pre-processing device. A cutting transmission that transmits power to the power input section is provided.
A horizontal main frame that supports the cutting pre-treatment device is disposed along the left-right direction of the traveling machine body, and the end of the horizontal transmission shaft that is built in the horizontal main frame is on the riding operation unit side to the cutting pre-treatment device. Power input part of
The cutting transmission is disposed in the vicinity of the rear side of the horizontal main frame so as to be aligned with the horizontal main frame in the front-rear direction at a height position overlapping the horizontal main frame in the front-rear direction,
The engine and the traveling transmission are linked so that power can be transmitted, and the engine and the cutting transmission are configured so that engine power is transmitted directly from the engine to the cutting transmission separately from a transmission system to the traveling mission. The power transmitted from the engine to the cutting transmission is transmitted to only the lateral transmission shaft via the power input unit , and
The cutting transmission includes a cutting HST that is configured by a hydrostatic continuously variable transmission and that receives engine power from the riding operation unit side, and a speed reduction gear mechanism that receives power from the cutting HST and decelerates. And a reduction gear case portion that houses the reduction gear mechanism is disposed on a side opposite to the boarding operation portion side of the cutting HST, and a front side of the cutting HST from a front portion of the reduction gear case portion. The output shaft extends through the output shaft, and the output end of the output shaft is provided with an output rotator that transmits the speed change power to the power input unit. is there. .

[Action]
By adopting a configuration in which the mowing transmission is arranged outside the transmission case, the mowing transmission can be arranged in the vicinity of the power input unit of the mowing pretreatment device. As a result, the power is transmitted to the transmission case from the engine to the crawler traveling device (traveling mission), and the power is transmitted from the engine to the cutting transmission separately from the transmission system to the traveling mission. Therefore, the transmission system from the engine to the power input unit of the cutting transmission is no longer necessary, and the transmission system from the engine to the transmission case and the transmission system from the transmission case to the power input unit can be avoided.

〔effect〕
By making a simple modification to arrange the mowing transmission outside the transmission case, the mowing transmission can be arranged in the vicinity of the power input unit and a transmission system from the engine to the mowing transmission can be constructed. Was able to avoid congestion.

By providing hydrostatic continuously variable transmission in cutting the transmission, even taking a configuration which receives power from the engine, it is possible to shift the continuously variable, taking synchronous and asynchronous and cutting speed running speed It becomes easy.

〔Constitution〕
A characteristic configuration of the invention according to claim 2 is the invention according to claim 1 , wherein, in the invention according to claim 1, the mounting base that supports the portion near the end portion on the boarding operation portion side of the laterally oriented main frame from the lower side, is attached to the top of the erected a frame frame, the upper side of the mount, the vertical the reaping the HST, which positioned the input portion of the engine power to the upper, position output portion to the speed reduction gear mechanism to the lower The cutting gear so that the reduction gear case portion is in a front-to-back orientation in which the connecting portion to the lower portion of the cutting HST is located at the rear and the extended portion of the output shaft is located at the front. The transmission is attached.

〔Constitution〕
According to a third aspect of the present invention, in the invention according to the first or second aspect , the engine and the cutting transmission are linked with each other by a first endless rotating body so that power can be transmitted, and the engine and the traveling mission Are linked in such a way that power can be transmitted by the second endless rotating body, and the operation and effect thereof are as follows.

[Function and effect]
That is, since the engine and the cutting transmission are configured so that power can be transmitted by the first endless rotating body similarly to the second endless rotating body that transmits power between the engine and the traveling mission, the cutting transmission is removed from the transmission case. Thus, by arranging it in the vicinity of the power input unit, it was possible to transmit power regardless of the distance between the cutting transmission and the engine.

  The combine will be described. As shown in FIGS. 1 and 2, the threshing device 1 including the threshing feed chain 1 a, the boarding operation unit 2, and the like are mounted on the traveling machine body 4 that travels on the crawler traveling device 3, and is raised in front of the traveling machine body 4. A pre-cutting processing device 5 including a device 6, a reaping device 7, a chopped cereal conveying device 8, etc. is arranged, and a waste straw processing device 10 is provided behind the threshing device 1 to constitute a combine.

  As shown in FIGS. 1 and 2, a cylindrical main frame 9B serving as a transmission case is extended forward from the front end of the traveling machine body 4, and a pre-cutting processing device 5 is attached to the cylindrical main frame 9B. . A hydraulic cylinder 11 is installed between the cylindrical main frame 9B and the front end of the traveling machine body 4, and the cylindrical main frame 9B is attached to the traveling machine body 4 so as to be movable up and down around the horizontal axis X.

A support structure for the cylindrical main frame 9B will be described. As shown in FIGS. 1, 2, and 4, the cylindrical main frame 9B is integrally fixed to the horizontal main frame 9A and extends forward from the horizontal main frame 9A.
The horizontally oriented main frame 9 </ b> A is attached and supported across a pair of left and right brackets 12 </ b> A and 12 </ b> B provided upright at the front end of the traveling machine body 4.

  A support structure of the left bracket 12A will be described. As shown in FIGS. 1 to 5, the support box 13 is erected, and an open space a that opens only to the left lateral side is formed at the front end of the support box 13. A cylindrical support shaft 12D that supports the left bracket 12A is provided upright by being integrated with a turntable 12C, which will be described later, through the top frame 13A from the machine body frame 45 of the traveling machine body 4.

As shown in FIGS. 4 and 5, the top plate 13A supports a turntable 12C that can swing left and right around the longitudinal axis Y, and a left bracket 12A is attached and fixed to the upper surface of the turntable 12C. Yes.
The left bracket 12A is composed of a receiving bracket portion 12a fixed to the swivel base 12C and a lid bracket portion 12b bolted to the receiving bracket portion 12a. The horizontal main frame 9A is formed by both bracket portions 12a and 12b. It is configured to be pinched and fixed.

As shown in FIGS. 4 and 6, a frame frame 14 that supports the right bracket 12 </ b> B at the front end position of the traveling machine body 4 and at the middle position on the left and right sides with respect to the support box 13 erected at the left front end of the traveling machine body 4. Standing up. The frame frame 14 is formed by bending a square pipe material. The frame frame 14 is erected at a certain height from the front end of the traveling machine body 4, and the oblique frame portion 14 </ b> A extends rearward and upward from the upper end thereof, and faces rearward from the extension end. The horizontal frame frame portion 14B is extended to the bottom, and the frame portion is suspended downward from the extended end, and is attached and fixed to the traveling machine body 4.
The plate members 40, 40 are bridged at two places in the front and rear direction across the support box 13 located at the left end and the frame frame 14 located in the middle between the left and right sides, thereby enhancing the mechanical strength.

As shown in FIGS. 4 to 8, the right bracket 12 </ b> B is supported with respect to such a frame frame 14. However, the right bracket 12B is formed integrally with a case that houses a cutting transmission described later, and this point will be described.
The cutting transmission device includes a cutting HST 15 that is a hydrostatic continuously variable transmission, and a reduction gear mechanism 16 that receives power from the cutting HST 15 and decelerates.
A cutting HST case portion 15A for storing a cutting HST15 (hydrostatic continuously variable transmission) of the cutting transmission, a reduction gear case portion 16A for storing a reduction gear mechanism 16 that receives power from the cutting HST15 and decelerates, and a reduction gear case portion A mounting base 17 for attaching the output shaft of 16A to the frame frame 14 is integrally formed.

  The right bracket 12 </ b> B described above is formed on this integrally formed member. That is, as shown in FIGS. 4 to 8, the receiving bracket portion 12c of the right bracket 12B is integrally formed on the mounting base 17, and the lid bracket portion 12d is attached to the receiving bracket portion 12c so as to be swingable up and down. The horizontal main frame 9A can be attached and held.

On the other hand, an elevating hydraulic cylinder 11 is configured to be detachable with respect to a cylindrical main frame 9B extending forward from the lateral main frame 9A.
Further, when the pre-cutting processing device 5 is switched from the working posture to the non-working posture, a lock operating tool 18 for maintaining the pre-cutting processing device 5 at a constant height is provided on the swivel base 12C.

With the configuration as described above, in the working posture positioned in front of the traveling machine body 4, the lifting operation is performed by the lifting / lowering hydraulic cylinder 11, and the horizontal main frame 9 </ b> A is received by the lock operating tool 18, and the pre-cutting processing device 5. Is maintained at a certain height. In this state, the linkage between the hydraulic cylinder 11 and the cylindrical main frame 9B is released.
After making such preparations, the lid bracket portion 12d of the right bracket 12B is removed, and the swivel base 12C is pivoted about the longitudinal axis Y, thereby pivoting the cutting pretreatment device 5 laterally outward. , Can be switched to a non-working posture.

A power transmission system from the engine E will be described. As shown in FIGS. 4 and 6 to 8, the engine E is disposed in the state of being close to the right side of the frame frame 14, and the output pulley 19 attached to the output shaft of the engine E is opposed to the frame frame 14. It is arranged with. On the other hand, an input shaft projects from the surface of the cutting HST case portion 15A facing the engine E, and an input pulley 20 is attached to the input shaft. A first transmission belt 21 as a first endless rotating body is stretched over the output pulley 19 and the input pulley 20, and power is transmitted directly from the engine E to the cutting HST 15.
As shown in FIG. 6, below the cutting HST 15, a tension arm 22 is pivotally supported on the mounting base 17, and a tension wheel 22 </ b> A is attached to the tension arm 22 to apply tension to the first transmission belt 21. It is.

As shown in FIGS. 4 and 6 to 8, the power introduced to the cutting HST 15 through the input pulley 20 is transmitted to the reduction gear mechanism 16 from the hydraulic motor of the cutting HST 15. As described above, the reduction gear mechanism 16 is installed in the reduction gear case portion 16A integrally formed with the cutting HST case 15A.
The output from the reduction gear mechanism 16 is obtained by attaching a cutting output gear 23 (corresponding to a rotating body for output) to an output shaft protruding from the mounting base 17 toward the engine side. It is transmitted to a cutting input gear 26 as a power input unit of the preprocessing device 5. On the output shaft projecting from the mounting base 17, a tension pulley 24 is supported between the cutting output gear 23 and the mounting base 17, and with respect to the first transmission belt 21 from the side opposite to the tension wheel 22A. Giving tension.

As shown in FIGS. 8 and 11, the pre-cutting processing device 5 is provided with a lateral transmission shaft 25 inside the lateral main frame 9A, and a shaft in which the lateral transmission shaft 25 projects from the right end of the lateral main frame 9A. A cutting input gear 26 is attached to the end.
The power taken in through the cutting input gear 26 is transmitted to the pulling device 6, the cutting device 7 and the like through the longitudinal transmission shaft 27 installed in the cylindrical main frame 9B. On the other hand, it is configured such that power can be transmitted from the output portion 9a provided at the intermediate portion of the horizontally oriented main frame 9A to the harvested cereal haul conveying device 8.

As shown in FIGS. 7 and 8, the cutting output gear 23 and the cutting input gear 26 described above are in a state in which they are engaged with each other at positions adjacent to each other when the cutting pretreatment device 5 is maintained in the working posture. The engine power can be transmitted to the cutting pretreatment device 5.
In order to switch the cutting pretreatment device 5 to the non-working posture, as shown in FIG. 4, the cutting pretreatment device 5 is raised and lowered to a predetermined height, and the height is maintained by the lock operating tool 18. As shown in FIGS. 3 and 10, the cutting pretreatment device 5 is rotated around the longitudinal axis Y of the left bracket 12A simply by releasing the linkage between the main frame 9B and the cylindrical main frame 9B and opening the lid bracket portion 12d. If it moves, the occlusion state of the cutting output gear 23 and the cutting input gear 26 can be automatically released, and the cutting pre-processing device 5 can be switched to the non-working posture.

  The transmission structure to the traveling system is as follows. As shown in FIG. 11, the traveling HST 29 is disposed at the input portion of the traveling mission case 28 </ b> A housing the traveling mission 28, the input pulley 30 is disposed in the traveling HST 29, and the output pulley 31 of the engine E is connected to the second endless rotation. The power transmission from the engine E to the traveling mission 28 can be performed in cooperation with the second transmission belt 32 as a moving body.

  As described above, the traveling mission 28 and the cutting gearbox introduce power from the engine E through separate transmission routes. Therefore, it is necessary to synchronize the traveling speed and the cutting speed. For this purpose, the following configuration is adopted. As shown in FIG. 12, both the traveling mission 28 and the cutting transmission device use HST. The HST speed change structure is performed by changing the angle of the swash plate. Here, the travel HST speed change motor 33 and the cutting speed change motor 34 are used to change the swash plate angle.

As shown in FIG. 12, a travel speed sensor 35 for measuring the output speed of the travel HST 29 is provided, and a travel speed change lever 36 for setting the travel speed is provided, and a potentiometric shift for detecting the shift position of the travel speed shift lever 36 is provided. A position detection sensor 37 is provided.
With such a control configuration, the control device 38 receives the shift signal from the shift position detection sensor 37 and sets the speed of the traveling HST 29 by the traveling HST transmission motor 33.

  The traveling speed sensor 35 detects the output speed of the traveling HST 29 that is controlled in response to the speed setting of the traveling speed change lever 36, transmits the detection result to the control device 38, and the control device 38 drives the cutting HST transmission motor 34. Control. As a result, the cutting speed at the cutting HST 15 can be set to a speed synchronized with the traveling speed.

  However, when the cutting operation is performed while running at an extremely low speed as the traveling speed, if the cutting speed is synchronized with the traveling speed, the cutting speed becomes too low and the inconvenience such as stepping over the harvested crop with the crawler traveling device 3 is disadvantageous. May occur. Therefore, in this case, the cutting HST transmission motor 34 is controlled based on the detection result of the shift position detection sensor 37 of the traveling transmission lever 36, and the speed of the cutting HST 15 is set in a range that does not hinder cutting. A sensor for detecting the speed of the cutting HST 15 may be provided, and feedback control may be performed based on the detection value of this sensor.

  The mounting structure of the oil tank 39 will be described. As shown in FIGS. 4, 8, and 9, a frame that supports the right bracket 12 </ b> B at the front end position of the traveling machine body 4 and at the middle position on the left and right sides with respect to the support box 13 erected on the left front end of the traveling machine body 4. A frame 14 is erected. Paying attention to the space surrounded by the support box 13 and the frame frame 14 and the front and rear plate members 40, 40 spanning the support box 13 and the frame frame 14, an oil tank is placed in this space. 39 is placed.

  The thickness of the oil tank 39 is such that the oil tank 39 is surrounded by the support box 13 and the frame frame 14 and the front and rear plate members 40 and 40 connecting the support box 13 and the frame frame 14, and the horizontal main frame. Since it is not necessary to bear the load of the cutting pretreatment device 5 including 9A, the oil tank 39 having a substantially box shape matching the space shape may be installed.

  The upper surface shape of the oil tank 39 will be described. As shown in FIGS. 13 and 14, the cross-sectional shape of the oil tank 39 is a quadrangular shape that enters between the support box 13 and the frame frame 14 in a plan view, but is a deformed quadrangular shape in a side view. . That is, the basic shape is a quadrangle, but the inclined surface 39A is present in the front half of the top plate. As a result, the portion positioned below the cylindrical main frame 9B can be in a forward inclined posture, and has a shape in which soot and the like are difficult to accumulate.

  If a rubber plate hump 41 is provided between the inclined surface 39A of the oil tank 39 and the cylindrical main frame 9B, it is possible to further promote the flow of dust and the like toward the ground and prevent the accumulation of dust and the like. The function can be increased.

  Next, a structure for supporting the Glen tank 42 in the machine body frame 45 constituting the traveling machine body 4 will be described. As shown in FIGS. 1, 2 and 15, the Glen tank 42 is provided with a horizontal feed screw conveyor 43 and a discharge port 44 </ b> A for discharging grains stored in the Glen tank 42 to the outside. A feed screw conveyor 44 is provided.

  As shown in FIGS. 2 and 15, the Glen tank 42 is supported on the machine body frame 45 by a longitudinal axis Z so as to be able to open laterally. The structure of the body frame 45 that supports the Glen tank 42 includes a right main frame 45A in a front-rear posture and a horizontal frame 45B in a left-right posture, which are combined to form a right main frame 45A and a horizontal frame 45B. A triangular plate frame 45 </ b> C is stretched on the rear portion.

  As shown in FIGS. 2 and 15, the plate frame 45C is fixed by welding with two orthogonal sides 45a and 45a overlapped on the right main frame 45A and the lateral frame 45B. As shown in FIG. 16, the oblique side 45b of the plate frame 45C is bent downward and has a bent side portion 45d. The downward width W of the bent side portion 45d is set to a gradually changing state so that the connection portion with the horizontal frame 45B is the largest and the connection portion with the right main frame 45A is the smallest. .

By introducing the plate frame 45C with the above-described configuration, the number of parts can be reduced as compared with the case where the main frame and the like are arranged vertically and horizontally to configure the support portion of the glen tank 42 of the body frame 45. it can.
Further, the downward width W of the plate frame 45C is set to a gradually changing state so that the connection portion with the horizontal frame 45B is the largest and the connection portion with the right main frame 45A is the smallest. Therefore, the part where the load becomes the largest can be set to the largest downward width W, and the downward width W according to the magnitude of the load can be set.
A channel-like bracket 45G extends laterally outward from the right main frame 45A, and a hole 45e for a longitudinal axis Z that allows the Glen tank 42 to swing open is formed in the channel-like bracket 45G.

  A fuel tank 46 is disposed beside the plate frame 45C on the left and right center side of the body frame 45. As shown in FIGS. 15 and 17, the left main frame 45D at the left end of the body frame 45, the oblique frame 45b of the plate frame 45C, and the intermediate frame 45E extending rearward from the vicinity of the connection portion between the horizontal frame 45B. A fuel tank 46 is arranged.

  The shape of the fuel tank 46 is as follows. As shown in FIG. 17, a sheave case 47 having a sorting device that swings and sorts the threshing processed product is disposed on the front upper side of the fuel tank 46, and between the sheave case 47 and the fuel tank 46. In addition, a second object lateral feed conveying device 48 is arranged. In order to avoid interference with the second article laterally feeding and conveying device 48, the front end portion of the fuel tank 46 is formed on an inclined surface 46A whose upper surface is lowered forward.

  The lower surface of the front end portion of the fuel tank 46 is placed on the horizontal frame 45B described above, and the placed state is stable. On the other hand, the rear surface of the fuel tank 46 is attached and fixed via a bracket to a rear frame 45F constructed over the rear ends of the left main frame 45D and the intermediate frame 45E.

The upper surface 46B of the fuel tank 46 is a flat surface, and the height thereof is suppressed to a height that does not interfere when the sheave case 47 is taken out from the rear dust outlet during maintenance.
The rear surface of the fuel tank 46 is an inclined surface 46C that descends from the upper end to the middle height, and hinders the flow of the waste straw falling from the waste straw shredding device 49 disposed behind the sheave case 47. It is set to an inclined surface that does not.

  The lower half of the fuel tank 46 can be increased by being positioned below the lateral frame 45B. The lower surface of the lower half of the fuel tank 46 is a flat surface, but the rear half of the inclined surface 46D rises from the middle position. It has become. In this way, by using the rearwardly inclined surface 46D, it is possible to avoid the lower surface of the fuel tank 46 from climbing on a kite or the like even when the combine moves backward.

[Another embodiment]
(1) Although belts are employed as the first and second endless rotating bodies 21 and 32, chains or the like may be employed.
(2) Although the cutting input gear 26 is employed as a mode for inputting power to the lateral transmission shaft 25 of the cutting pretreatment device 5, other rotating bodies such as pulleys and sprockets may be used.
(3) In the said embodiment, although the thing of the structure which switches the cutting pre-processing apparatus 5 to a non-working attitude | position was used, you may apply to the combine which fixes the cutting pre-processing apparatus 5 to a working attitude | position.

Combine side view Top view of the combine with the cutting pre-treatment device in the working position Top view of the combine with the pre-cutting device in a non-working position Front view showing a support structure for a pre-cutting treatment device provided at the front end of the traveling machine body The side view which shows the support box which supports the left end of the cutting pretreatment apparatus provided in the front end of the traveling body Left side view showing a frame frame, a cutting HST case, and the like that support the right end of the cutting pretreatment device provided at the front end of the traveling machine body Right side view showing a frame frame, a cutting HST case, and the like that support the right end of the cutting pretreatment device provided at the front end of the traveling machine body The top view which shows the support structure of the cutting pretreatment apparatus provided in the front end of the traveling machine body The top view which shows the state of the sideways main frame in the middle of switching from the working position of the cutting pretreatment apparatus of FIG. 8 to a non-working position Right side view showing a state in which the cutting input gear and the cutting output gear are separated from each other during switching from the working position to the non-working position of the cutting pretreatment device. Power system diagram from engine to traveling mission, engine to cutting gearbox Control configuration diagram for mowing transmission and traveling mission Side view showing the positional relationship between the oil tank and the cylindrical main frame Top view showing oil tank sandwiched between support box and frame Plan view showing the structure of the Glentank support Left side view showing the bent side of the plate frame of the Glen tank Left side view showing fuel tank shape

4 traveling machine body 5 pre-cutting device 9A horizontal main frame 14 frame frame 15 cutting HST
16 Reduction Gear Mechanism 16A Reduction Gear Case 17 Mounting Base 21 First Endless Rotating Body (First Transmission Belt)
23 Cutting output gear (rotating body for output)
25 Lateral transmission shaft 26 Mowing input gear (power input section)
28 Traveling Mission 32 Second Endless Rotating Body (Second Transmission Belt)
E engine

Claims (3)

A cutting pre-treatment device is attached to the front of the traveling machine body, a traveling mission for transmitting power to the engine and the crawler traveling device to the traveling machine body, and a cutting transmission device for transmitting transmission power to the power input portion of the cutting pre-processing device is provided. ,
A horizontal main frame that supports the cutting pre-treatment device is disposed along the left-right direction of the traveling machine body, and the end of the horizontal transmission shaft that is built in the horizontal main frame is on the riding operation unit side to the cutting pre-treatment device. Power input part of
The cutting transmission is disposed in the vicinity of the rear side of the horizontal main frame so as to be aligned with the horizontal main frame in the front-rear direction at a height position overlapping the horizontal main frame in the front-rear direction,
The engine and the traveling transmission are linked so that power can be transmitted, and the engine and the cutting transmission are configured so that engine power is transmitted directly from the engine to the cutting transmission separately from a transmission system to the traveling mission. The power transmitted from the engine to the cutting transmission is transmitted to only the lateral transmission shaft via the power input unit , and
The cutting transmission includes a cutting HST that is configured by a hydrostatic continuously variable transmission and that receives engine power from the riding operation unit side, and a speed reduction gear mechanism that receives power from the cutting HST and decelerates. And a reduction gear case portion that houses the reduction gear mechanism is disposed on a side opposite to the boarding operation portion side of the cutting HST, and a front side of the cutting HST from a front portion of the reduction gear case portion. A cutting machine in which an output shaft is extended through, and an output rotating body that transmits transmission power to the power input unit is provided at an extended end of the output shaft . A mounting base that supports a portion of the sideways main frame that is close to the end of the boarding operation part from the lower side is attached to the upper part of the frame frame that is erected from the body frame of the traveling aircraft, and above the mounting base . The cutting HST has a vertical posture in which an engine power input portion is located at the upper portion and an output portion to the reduction gear mechanism is located in the lower portion, and the reduction gear case portion is located at the lower portion of the cutting HST at the rear portion. 2. The cutting machine according to claim 1 , wherein the cutting transmission is attached so as to be in a front-and-back orientation in which a connecting portion is located and an extension portion of the output shaft is located at a front portion . And said engine wherein the reaping transmission with power transmission capable associated with the first endless rotary bodies, according to claim 1 or 2, wherein the said engine and the traveling transmission are to be able to transmit power associated with the second endless rotary body Mowing machine.

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