JPH02207708A - Apparatus for lifting pretreatment-part of walking-type mobile farm machine - Google Patents

Abstract

PURPOSE:To allow a mobile farm machine to easily ride across a high levee or ridge of a field by branching a pretreatment part lifting apparatus from the upstream side of a pretreatment part clutch of a transmission apparatus and vertically moving a pretreatment part with the pretreatment part lifting apparatus. CONSTITUTION:Power is transmitted from an engine 6 to input shafts 19, 20 of a driving transmission 7 via main clutches 28a, 28b and a pretreatment part is driven by the input shafts via a clutch for the pretreatment part. The transmission apparatus 9 having the above construction is provided with a pretreatment part lifting apparatus 44 branched from the upstream side of the pretreatment part clutch of the transmission apparatus 9 and vertically moving said pretreatment part. The mobile farm machine having the above construction can easily ride across a high levee or ridge of a field. Furthermore, the traveling resistance can be decreased to improve the power efficiency of the mobile farm machine.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a pre-processing section elevating device for a walking-type mobile agricultural machine such as a binder, and more specifically, it relates to a device for lifting and lowering a pre-processing section in a walking type mobile agricultural machine such as a binder. The present invention relates to a preprocessing part elevating device in a mobile agricultural machine that is driven from the upstream side of a preprocessing part clutch of a transmission device that drives the preprocessing part via a clutch.

(0) Conventional technology There are two types of conventional two-wheel binders: those that are not equipped with a device for raising and lowering the pre-processing section, and those that are equipped with one.
There are different types.

Among those equipped with a device for raising and lowering the pretreatment section, there are those that are jacked up manually, those that are raised and lowered by a hydraulic cylinder, etc., and those that drive the screw jack with power extracted from the power transmission system of the pretreatment section. be.

(C) Problems to be Solved by the Invention However, in a two-wheel binder that is not equipped with a device for raising and lowering the pre-processing section, the lower part of the engine mounted at the rear of the machine or the lower part of the frame supporting the engine interferes with the high ridges. - It is not possible to ride over ridges, and the wheels sink into the field in wet fields, causing the pre-treatment section of the two-wheel binder to descend, making work difficult.

In addition, when moving the pre-processing section up and down manually,
Even if the vertical load is reduced by using a balance spring or the like, the structure becomes more complicated, requires considerable physical strength, and it is difficult to reduce the labor of the operator.

In addition, when the pretreatment section is moved up and down by a hydraulic cylinder or the like, the hydraulic cylinder or the like is expensive, which increases the manufacturing cost of the two-wheel binder and makes the structure complicated.

Therefore, the present invention provides a preprocessing section lifting device that is driven from upstream of the clutch of a transmission device that transmits power from the input shaft of a transmission that drives the wheels to the preprocessing section via the preprocessing section clutch. An object of the present invention is to provide a pre-processing section elevating device for a mobile agricultural machine that can easily raise and lower the processing section both when moving forward and backward.

(d) Means for solving the problem The present invention has been made in view of the above circumstances, and includes:
For example, referring to FIG. 1, FIG. 3, and FIG.
), (20), and transmits power to the input shafts (19), (20).
In a mobile agricultural machine (1) having a transmission device (9) that drives a pre-processing section (5) from W (0) via a pre-processing section clutch, the upstream side of the pre-processing section clutch of the transmission device W (9) The present invention is characterized in that a pretreatment section elevating device (44) is provided which is branched from the pretreatment section and lifts and lowers the pretreatment section (5).

(f) Based on the structure described above, the engine (6) is connected to the main clutch (
28a) and (28b) to the transmission (7).
) to drive the wheels (2) via the transmission (7), and also drive the pre-processing section (5) from the input shaft (19) via the pre-processing section clutch. Further, even if the mobile agricultural machine (1) is switched to forward or backward movement by switching the main clutch (28) or the like, the pretreatment section lifting device (44) is driven in either case, and the lifting device (44) The pre-processing section (5) is moved up and down. Further, the pre-processing section (5) is operated independently of the movement of the mobile agricultural machine (1) by the pre-processing section clutch.

Note that the symbols in parentheses do not limit equivalent configurations.

(f) Example Embodiments of the present invention will be described below along with the drawings.

As shown in FIGS. 1 and 2, the two-wheel binder 1 includes a machine body 3 supported by running wheels 2, a pretreatment section 5 provided at the front of the machine body 3, and a machine body 3 mounted on the machine body 3. The engine 6, the transmission 7 that transmits the power of the engine 6 to the wheels 2, the power transmission section 9 of the preprocessing section 5 that is pivotally supported on the upstream side of the transmission a7 and supports the preprocessing section 5, and the power transmission section 9 of the machine body 3. It is composed of an operation handle 10 and the like extending rearward from the top. Further, the pre-processing section 5 includes a divider 11 for separating grain culms, and a raising machine 12 for raising grain culms. Cutting blade 13. Transport body 15, transport guide plate 16. A bundle release section 17 or the like is provided.

As shown in FIGS. 3 and 4, pulleys 21 and 2 are provided on the outside of the forward and reverse input shafts 19 and 20 of the transmission 7.
2 is attached and taken out from the engine 6.
The pulleys 25, 26 and the pulley 21 attached to the
22 are wrapped around each other by belts 27 and 29, respectively. Furthermore, tight pulleys 28a and 28b (only one shown) are connected to these belts 27 and 29, respectively, and these tight pulleys are connected via wires to an operating lever (not shown) provided near the handle 10. It constitutes the main clutch. That is, both tight pulleys 2
The power transmission is cut off by releasing the tension of 8a and 28b, and the tension is applied to only one of the pulleys, so that the forward or reverse input shaft 19
or 20. Further, a chain 35 is wound around sprockets 32 and 33 provided on a shaft 30 and an axle 31 of a final gear that has passed through a gear train, which will be described later.

Further, a slide gear 37 is meshed with the idle gear 36, and a bevel gear 40 fixed to the shaft 39 of the slide gear 37 and a bevel gear 41 attached to the preprocessing section transmission shaft 42 are meshed with each other. A bevel gear 43 provided at the end of the preprocessing section transmission shaft 42 is meshed with a bevel gear (not shown) provided on the input shaft to the required equipment of the preprocessing section 5.

Next, the elevating device 44 of the preprocessing section 5 will be explained.

The pre-processing unit transmission shaft 42 is provided with a male spline portion 42a and a small diameter portion 42b, a male cone clutch 45a having a female spline portion is attached to the male spline portion 42a, and is rotatably attached to the small diameter portion 42b. A female cone clutch 45b is attached to the cone clutch 45b, and a worm gear 46 formed into a self-locking angle is provided at the base of the cone clutch 45b. Further, a ohm wheel 47 is attached to the lower part of the power transmission section 9 at a position where it meshes with the worm gear 46, and a crank arm 47b is attached to the outside of the shaft 47a of the worm wheel 47. A mounting member 49 is mounted, a pin 50 is implanted in this mounting member 49, and this pin 50 is connected to the crank arm 47.
A link 51 is connected to a crank pin 47c provided at b. And the male cone clutch 45a
The cam-like shifter 52 that comes into contact with the shoulder of the power transmission unit 9
The shifter 52 is rotatably provided on the side wall of the case.
A handle 53 is attached to the handle 53, and an inner wire 5 of a Bowden wire 56 is attached to a hook 55 that is engaged with the handle 53.
6a is attached, and the other end of this wire 56 is attached to a grip 59 attached to the operating handle 10 with a clip 57, as shown in FIG. ．． Handle, 53. shifter 52
The elevating device 44 is configured such that the male cone clutch 45a is brought into pressure contact with the female cone clutch 45b by strong and weak surface pressure.

Next, the transmission 7 and the power transmission section 9 will be explained in detail with reference to FIG.

The case 61 of the transmission 7 is formed into an integral box shape.
A cylindrical hole 62 is provided near the center on the front side of the case 1, and a flange portion 63 is provided on the case 61 at a position facing the cylindrical hole 62. On the other hand, the counter case 65 of the power transmission unit 9 is formed into a substantially five-shape shape, the base of the counter case 65 is formed into a box shape, and a cylindrical boss portion 66 is formed at the tip. The other end of the support member 67 of the counter case 65 is fitted oil-tightly and rotatably into the cylindrical hole 62 and rotatably fitted around the outer periphery of the flange portion 63.
A counter case 65 and a support member 67 are removably fixed to the outside of the bottom of the base of the counter case 61 and are fixed to each other, and can freely rotate through a cylindrical hole 62 and a flange portion 63. A pre-processing section transmission shaft case 68 is fixed to the bottom of the counter case 65 so as to face obliquely downward.

Further, in the transmission case 61, a forward input shaft 19 is pivotally supported at the center of the flange portion 63 and the boss portion 66, and a reverse human power shaft 20 is further provided in front of the input shaft 19. An idle shaft 69 is located below the idle shaft 20 .
Shafts 30 are supported below the input shafts 19 in parallel with each other.

The counter case 65 also includes an idle shaft 70 between the boss portion 66 and the base, a shaft 39 at the base, and an input shaft 19.
A pre-processing unit transmission shaft 42 is supported in parallel with the shafts 39 and is perpendicular to the shaft 39 and faces diagonally downward.
It is pivotally supported at the center of the front part of the transmission shaft case 68 and passes through the transmission shaft case 68.

Furthermore, to explain the gear train, the forward input shaft 19 has a small gear 71 on its pulley side. A large gear 72 is fixed to the center of each of the arms, a slide gear 73 that can selectively mesh with the small gear 71 and the large gear 72 is slidably attached to the reverse input shaft 20, and a small gear 76 is attached to the idle shaft 69. and a large gear 77 are fixed, and a slide gear 75 that can selectively mesh with the small gear 76 and the large gear 77 is the reverse input shaft 2.
0, a gear 79 is attached to the idle shaft 69 adjacent to the small gear 76 so as to be slidable so as not to interfere with the sliding gear 73, and this gear 79 and a gear 80 fixed to the shaft 30 are connected to each other. are interlocked with each other.

On the other hand, an idle shaft 70 pivotally supported by the counter case 65
Large gear 81. An idler 36 having a small gear 82 is attached, a gear 83 fixed to the input shaft 19 is meshed with the large gear 81, and a slide gear 37 slidably attached to the shaft 39 is connected to the large gear 81. It is designed to selectively mesh with the small gear 82. Further, as described above, the bevel gear 40 attached to the shaft 39 and the bevel gear 41 attached to the pretreatment section transmission shaft 42 are meshed with each other, and the chain 35 is wound around the sprocket 32 fixed to the shaft 30. . Further, after each shaft, each gear, etc. are assembled, the opening of the counter case 65 is removably and oil-tightly covered by a cover 86.

The power to each device in the pre-processing section 5 is provided by the pre-processing section transmission shaft 4.
This is carried out via a pre-processing section clutch (not shown) located downstream of No. 2.

Since this embodiment is configured as described above, the two-wheel binder 1 transfers power from the engine 6 to the wheels 2 through the transmission l17.
, the aircraft body 3 supported by the wheels 2 turns the steering handle 10
The machine is steered by an operator to move around the field, and each device in the pretreatment section 5 is operated by the power of the engine 6 via the power transmission section 9, and the culms of the field are divided by the divider 11 and pulled up. The plant is raised by the machine 12, cut off by the cutting blade 13, guided by the conveyance guide plate 16, and transferred to the conveyor 15.
The grain culms are conveyed to the bundling release section 17 and the bound grain stems are released from the binder 1 by the bundling release section 17 .

At this time, when the operator presses the tight pulley 28a against the belt 27 with one arm 60, the power of the engine 6 is transmitted to the forward input shaft 19, the two-wheel binder 1 moves forward, and the other arm 60 presses the tight pulley 28b against the belt 29. and the engine 6 is connected to the reverse input shaft 20.
The power is transmitted and the two-wheel binder 1 moves backward.

In addition, even if the power of the engine 6 is input to either the forward or reverse input shaft 19.20, the slide gear 73 can mesh with the small gear 71 or the large gear 72, 83° idle gear 36. Slide gear 37. The rotational force of the engine 6 is transmitted to the pretreatment section transmission shaft 42 via the shaft 39° bevel gear 40.41.

In this case, the operator uses the operating handle 85 of the slide gear 37 to shift the large gear 37a of the slide gear to the small gear 82.
When the small gear 37b is engaged with the large gear 81, the transmission shaft 42 transmits low speed rotation, and when the small gear 37b is engaged with the large gear 81, the transmission shaft 42 transmits high speed rotation.

When the operator grasps the grip 59, the inner wire 56a of the operator pulls the hook 55 via the Bowden wire 56 (see FIG. 3), rotates the handle 53, and causes the cam portion of the shifter 52 to engage the male cone clutch 45a. is pressed against the female cone clutch 45b. Then, the rotational force of the transmission shaft 42 is applied to the ohm gear 46, which rotates the ohm gear 46 or the worm wheel 47, and the shaft 47a,
The link 51 is pushed through the crank 47b and crank pin 47c, and the power transmission section 9 is shifted to the e! 7 mounting member 49
The pretreatment section 5 mounted on the power transmission section 9 is raised.

Next, to explain the operation of the transmission 7, when the operator presses the tight pulley 28a against the belt 27 to move forward, the operator operates the slide gear 73. can be selected, and when the operator presses the pulley 28b against the belt 29 to move backward, the operator can select two reverse speeds by operating the slide gear 75 to the opposite side or to the near side.

In addition, in the case of forward movement, as described above, by operating the slide gear 37 toward the opposite side or toward the front side using the handle 85, the preprocessing section 5 can be driven at a low speed or a high speed.

In addition, since the worm gear 46 is set to an automatic tightening angle, even if the cone clutches 45a and 45b are disengaged, the worm gear 46 and the large worm gear 47 are automatically tightened.
By being able to maintain the engagement position at that time, the preprocessing section 5 can be maintained at the position at that time.

To lower the pre-processing section 5, grasp the grip 59, and then
- degree pre-processing section 5 rises to the highest position and then descends, so when the operator recognizes that the height is appropriate, the grip 59
When released, the pretreatment section 5 is lowered to an appropriate height and held there.

Further, the cone clutches 45a and 45b will slip if an excessive load is applied to them.

Furthermore, the transmission mechanism will be explained in detail. In FIG. 4, the opposite side will be described as the right side and the near side as the left side. The slide gear 73 is moved left and right by moving it back and forth via a right angle crank mechanism or the like. Furthermore, a long hole in the front-rear direction is formed at the end of a lever or the like that moves the slide gear 75 left and right. By doing so, as shown in FIG. 5, the tip of the shift lever changes gears when the position of the lever tip is indicated by a white circle, and becomes neutral when the position is indicated by a black circle. That is, in the N position, the slide gear 73.
75 are both neutral and in the N1 position, the slide gear 73 is engaged on the low speed side, but when the slide gear 75 is neutral and the wheel 2 is in 1st gear for reverse, it is neutral for forward, and in the F position, it is in gear for forward. 1st gear when going backwards, 1st gear when going backwards, 2nd gear when going forwards, 1st gear when going backwards in F3 position, similarly N3
The position is 2nd gear for reverse, neutral for forward, F3 position is 3rd gear for forward, 2nd gear for reverse, and F4 position is 4th gear for forward, 2nd gear for reverse. be.

For forward or reverse movement, the tight pulleys 28a and 28b are moved by another operating lever 60, and the clutch for the pre-processing section is also connected and disconnected by another operating lever.

However, the clutch for the pre-processing section may be disengaged when the vehicle is operated in reverse.

As explained above, since the pre-processing section 5 can be raised by the operator's grip on the grip 59, it is possible to go over high ridges and ridges. In addition, when the wheels 2 sink in wet fields, the pretreatment section 5 can be easily raised to cut the culm, preventing contact with the rice field, reducing running resistance, and adjusting the angle of the cutting blades 13. Since it only tilts upward a little (because the rotating arm of the pre-processing section 5 is long), only the culm can be cut cleanly. Further, the operator's labor can be saved compared to a manual pretreatment unit elevating device, and there is no need for a balance spring or the like to keep the pretreatment unit 5 suspended at all times, and the structure can be simplified. Furthermore, expensive equipment such as a hydraulic jack is not required, and costs can be reduced. In addition, the mounting member 49 of the fuselage 3
Since the pre-processing section 5 can be raised and lowered via the link 51, by installing this link 51 without any play in the lateral direction, it is possible to prevent the pre-processing section 5 from swinging from side to side.
It can strengthen the whole thing.

Furthermore, the grip 59 attached to the operating handle 10 allows the preprocessing section 5 to be raised and lowered easily and without requiring physical strength, and the raising and lowering can be adjusted quickly even while the vehicle is running.

In addition, although the limit for lifting and lowering is small in the screw type lifting device, this limit can be increased in this lifting device, and the preprocessing section 5 can be raised and lowered reliably and arbitrarily.

Further, since the support member 67 and the counter case 65 are integrated to support the pretreatment section 5, assembly is easy and the structure of the two-wheel binder 1 is significantly strengthened.

In addition, an excessive load may be applied to the cone clutches 45a and 45b (for example, when the pretreatment section is lowered to the lowest position when a foreign object is sandwiched between the cases 61 and 65).
Since it will slip if applied, it is possible to prevent excessive external force from being applied to the machine, and the two-wheel binder can be maintained.

In addition, in order to take out the pre-processing unit transmission shaft 42 from the input shaft 19, it is necessary to attach a bevel gear in addition to various gears attached to the input shaft 19, so that the transmission 7 is connected between the wheels 2. Although it is difficult to store it, by providing the counter case 65, the speed reducer 7 can be configured compactly and can be stored between both axles 2, and the pre-processing section transmission shaft 42 is installed at the center of the two-wheeled combine harvester l. be able to. Furthermore, the speed change and deceleration mechanism can be housed in the counter case 65, making it possible to easily and smoothly perform preprocessing work.

In addition, since a clutch for the pre-processing section (not shown) is provided downstream of the pre-processing section transmission shaft 42, when traveling in reverse, it is pressed by one end of the lever that presses the pulley 60b (see FIG. 3) against the belt 29. By providing a mechanism for disengaging the clutch for the pre-processing section, each device of the pre-processing section 5 can be disengaged when traveling in reverse, and the cone clutch 45a can also be disengaged during both forward and reverse travel.
, 45b, and the pretreatment section 5 can be raised and lowered by a grip 59 provided on the operation handle 10.

(G) As described in detail, according to the present invention, the pre-processing section lifting device (44) is provided which is driven from the upstream side of the pre-processing section clutch of the transmission device (9), so that the field The mobile agricultural machine (1) can easily cross high ridges and ridges. In addition, the preprocessing section (
Since the pre-processing section (5) can be moved without contacting the field surface while moving up and down, the running resistance can be reduced and the power efficiency of the mobile agricultural machine (1) can be improved. In addition, there is no need for balance springs, hydraulic jacks, etc., and the structure is simple and costs can be reduced. Furthermore, since the clutch for the pre-processing section is provided downstream from the power outlet of the pre-processing section lifting device (44), the lifting device (44) is driven both during forward and backward movement to move the pre-processing section (5). can be raised and lowered.

[Brief explanation of the drawing]

Fig. 1 is a side view of a two-wheel binder embodying the present invention;
The figure is a plan view, FIG. 3(a) is an explanatory diagram of the elevating device of the reduction gear, power transmission section, and pre-processing section, FIG. 3(b) is a sectional view of the elevating device, and FIG. FIG. 3 is a cross-sectional view showing the gear train, and FIG. 5 is an explanatory diagram of a speed change operation. 1... Walking type mobile agricultural machine (two-wheeled binder) 5... Pre-processing section, 6... Engine 7... Traveling transmission (transmission) 9... Power transmission system (dynamic rolling part) 19. 20... Input shafts 28a, 28b... Main clutch (tight pulley), 4
4... Pre-processing section lifting device (lifting device) Fig. 5

Claims (1)

[Claims] 1. A walking device having a transmission device that transmits power from an engine to an input shaft of a traveling transmission via a main clutch, and drives a pre-processing section from the input shaft via a pre-processing section clutch. A preprocessing unit elevating device for a walking type mobile agricultural machine, characterized in that a preprocessing unit lifting device is provided that is branched from the upstream side of the preprocessing unit clutch of the transmission device and lifts and lowers the preprocessing unit. Device.