JPS609071Y2 - Combine drive device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drive device for transmitting engine rotation to a traveling section and a reaping section in a combine harvester.

The self-propelled combine harvester consists of a reaping section that harvests and transports the shell culms in the field, a threshing section that threshes and sorts the transported shell culms, a traveling section that carries them and runs, and other auxiliary devices. ing.

Each of these devices is driven by an engine mounted on the machine base, but in conventional combine harvesters, each device in the reaping section is connected to a reaping drive shaft mounted on the upper rear end of the reaping section. The threshing unit is driven through a connected transmission shaft, and each device of the threshing section is driven through a threshing input shaft,
Further, the traveling section is configured to be driven via a transmission within a gear box.

On the other hand, the reaping section needs to be raised and lowered when adjusting the reaping height or when traveling on the road. For this purpose, the upper end of the reaping frame that supports the entire reaping group is pivotally supported on the bearing of the reaping drive shaft. It is made to move up and down by swinging with a hydraulic cylinder.

It is desirable that the gearbox be placed as close as possible to the engine and the running section in terms of downsizing the device and improving conduction efficiency, and the members that pivot the reaping section are designed to downsize the device and shorten the hydraulic cylinder stroke. For this reason, it is desirable to install it as low as possible.

In particular, in the small walk-behind combine harvesters that have been developed in recent years to meet the needs of small-scale farmers, it is necessary to downsize and simplify the drive devices for the traveling section and the reaping section in order to make the machine platform more compact. It is strongly requested.

However, in the past, the reaping drive shaft and the reaping pivot were provided separately from the drive device for the traveling section, which hindered miniaturization and made the drive device extremely complicated.

The present invention was developed in view of the above points, and the gear box is formed in a vertical shape extending from the bottom of the inlet funnel toward the running section, and the reaping frame is attached to the pivot point at the upper end of the gear box. The present invention provides a drive device for a combine harvester, which is configured so that the device is made smaller and simpler by integrally providing the material, and the stroke of a hydraulic cylinder for swinging a reaping frame is shortened.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

This embodiment shows an example in which the present invention is applied to a small walk-behind combine harvester. Fig. 1 is a side view of the combine harvester in which the invention is implemented, Fig. 2 is a rear view, and Fig. 3 is a front view of the drive device. 4 is a perspective view of A in FIG. 3, FIG. 5 is a vertical sectional view of FIG. 3, and FIG. 6 is a power transmission path diagram.

In these figures, the combine 1 consists of a threshing part 3 and a running part 4 of a reaping part 2, and the reaping part further includes a tiller 5 that scrapes the husks in the field, and a part behind it that erects the fallen husks. a pulling device 6 for cutting the grass culm, a clipper-shaped cutting blade 8 installed close to the ground at the rear of the grass cutting rod 7 supporting the grass cutting body 5 and cutting the root part of the grass culm; It is composed of a shell culm conveying device 9 for conveying to the threshing section 3, and the like.

In addition, the frame 10 of the threshing section 3 includes a handling chamber 12 that stores a handling barrel 11, and a sorting chamber 14 extending from below in the width direction of the machine and housing a sorting device including a winnower 13 and others. is formed into a rectangular shape S, and is supported by fixing its legs to the traveling frame 15 of the traveling section 4.

Then, on the side of the handling chamber 12, a feed chain 17 that clamps and transfers the culm together with a clamping rod 16 is installed in the handling chamber 12.
2, and behind the threshing section 3, there is a bagging device 18. Control box 19. Straw cutter 20
are arranged in parallel in the width direction of the machine.

Further, on the reaping section 2 side of the frame 10, there is an inlet funnel 21 which is formed in a triangular shape in plan view and which receives scattered grains from the handling chamber 112 and grains shed from the shell culm during transportation. The height is S゛ from the entrance of the handling chamber in the central part to the reaping part 2
It is protruded towards.

Further, the running section 4 is constituted by a pair of left and right running rollers 25, each of which includes a driving wheel 22, a plurality of running wheels 23 attached to the running frame 15, and an endless crawler track 24 stretched between these wheels. ing.

Between the reaping section 2 and the threshing section 3, an engine 26 shown in FIG. 6 that drives each device of the machine is mounted with its output shaft 27 parallel to the direction of movement of the machine. The output shaft 27 is connected by a belt to a hydraulic pump 28 mounted on the outside of the machine, a drive device 29 to be described later, and an input shaft 30 of the threshing section 3, respectively.

The drive device 29 includes a gear box 31 and a gear device housed inside the gear box 31.
As shown in FIG. 1, the inlet funnel 21 is formed in a vertical shape extending from below the inlet funnel 21 toward the running portion 4. As shown in FIG.

As shown in detail in FIGS. 3 to 6, this gear box 31 is divided into a main body 32 and a thinner lid 33 in the axial direction of the internal shaft.
After storing the device inside, it is integrated with many bolts.

A box-shaped input box 32a is integrally formed near the upper end of the main body 32 and protrudes from the side plate thereof. , an input shaft 35 is rotatably supported.

Furthermore, an input pulley 3 is connected to one end of the input shaft 35 by a belt and connected to a pulley on the output shaft 27 of the engine 26.
6 is pivotally attached to the other end, and a bevel gear 37 is pivotally attached to the other end.

A drive shaft 38 that is orthogonal to the input shaft 35 is provided inside the gear box 31, with one end being pivotally supported by the side plate of the input box 32a, and the other end being pivoted to the lid 33.
Two bevel gears 39 and 40 that mesh with the bevel gear 37 are freely rotatably mounted on the drive shaft 38 so as to face each other.

Further, between these bevel gears 39 and 40, there is an input clutch 4 that selectively meshes with one of the bevel gears 39 and 40 by sliding to rotate the drive shaft 38 forward or backward.
1 is fitted in a non-rotatable but slidable manner.

42 is a shifter that slides this input clutch 41, and is connected to the operating lever of the control box 19 via a thick shaft and a wire (not shown).

Further, a speed change gear shaft 45 is supported below the drive shaft 38 and is driven by the meshing of gears 43 and 44.

A transmission gear 46 integrally formed with three medium and small gears is fitted in a non-rotatable but slidable manner.

47 is a chic for sliding this speed change gear 46,
It is connected to an operating lever of the control box 19 via a thick shaft 48 and a wire (not shown).

Further, a speed change shaft 49 is pivotally supported below the speed change gear 46, and three gears 50 that selectively mesh with any of the gears by sliding the speed change gear 46 are mounted on the speed change shaft 49.
．． 51.52 are pivoted.

Furthermore, a clutch shaft 53 is pivotally supported below the speed change shaft 49, and the clutch shaft 53 meshes with a gear 54 that is rotatably mounted on the speed change shaft 49, and a clutch gear having a clutch shaft formed on both sides thereof. 55 is rotatably mounted.

Further, on the speed change shaft 49, there are two sliding gears 56.5 each having a clutch surface that meshes with the clutch surface of the clutch gear 55.
7 are non-rotatably but slidably fitted on both sides of the clutch gear 55, and between these outer surfaces and a brake plate 58 attached to the gear box 31, there is a brake surface that suddenly brakes the rotation of the clutch gear 55. is formed.

Two shifters 59 slide the sliding gears 56 and 57, and are connected to a side clutch lever of the control box 19 via a thick shaft 60 and a wire (not shown).

A pair of left and right travel drive shafts 61 and 62 are pivotally supported below the clutch shaft 53 and at the lower end of the gear box. It is formed longer than the drive shaft 62.

Further, these travel drive shafts 62 are supported by a foil pipe that is separately provided and press-fitted into the gear box 31.

Gears 63 and 64 that mesh with the sliding gears 56 and 57 are respectively attached to the running drive shafts 61 and 62, and drive wheels 22 of the running rollers 25 are mounted on both ends of the drive shafts 61 and 62, respectively. It is attached to the shaft.

On the other hand, a reaping drive shaft 65 is supported at the upper end of the gear box 31 with both ends protruding from the gear box 31, and a chain wheel 66 is rotatably mounted on the reaping drive shaft 65. , is chain-connected to the chain wheel 67 on the drive shaft 38.

A one-way clutch is interposed between the chain wheel 67 and the drive shaft 38, which transmits the rotation to the chain wheel 67 only when the drive shaft 38 rotates in the forward direction.

Further, a clutch surface is formed on a side surface of the chain wheel 66 and engages with a clutch surface of a reaping latch 68 that is coaxially fitted in a non-rotatable but slidable manner.

69 is a chic for sliding the reaping latch 68;
Shifter shaft 70. It is connected to the reaping latch lever of the control box 19 via a shifter lever 71 and a wire (not shown).

Furthermore, a bevel gear 7 is provided on the protruding portion of the reaping drive shaft 65 on the side of the lid body 33.
2 is pivotally attached, and a pivot member 73 formed in the shape of a cylinder with a bottom is attached to the side surface of the lid body 33 so as to cover the protrusion of the reaping drive shaft 65.

As shown in FIG. 1, a pipe-shaped reaping frame 74 that supports the entire reaping section 2 is rotatably supported on the pivot member 73 at its upper end. A bevel gear 76 at the tip of a transmission shaft 75, which is pivotally supported through the transmission shaft, meshes with the bevel gear 72.

On the other hand, at the lower end of the gear box 31, a hydraulic cylinder 77 operated by the hydraulic pump 28 is rotatably supported by a mounting pin 78, and the tip of the piston is attached to the reaping frame 74. The reaping frame 74 is pivoted at the center and is configured to swing around the pivot member 73 by the operation of a hydraulic cylinder 77.

The input shaft 30 of the threshing section 3, which is connected to the engine 26 by a belt, is connected to a bearing 79 near the upper end of the gear box 31.
The input pulley 80, which is loosely mounted on the input shaft 30, is connected to a driving pulley on the engine output shaft 27 by a belt.

Further, the projecting portion of the reaping drive shaft 65 on the main body 32 side is connected to the conveyance drive shaft 84 via a coupling 81 and bevel gears 82 and 83.

In the combine constructed as described above, the rotation of the engine 26 is transmitted to the hydraulic pump 28, the input shaft of the drive device 29, and the input shaft 30 of the threshing section 30.

The rotation of the input shaft 35 is transmitted to the drive shaft 38 as normal rotation or reverse rotation by operating the input clutch 41 and causing the bevel gear 37 to mesh with any of the bevel gears 39 and 40.

Further, the rotation of the drive shaft 38 is transmitted to the speed change gear shaft 45 through the meshing of the gears 43 and 44, and is further transmitted to the speed change gear shaft 45 and the speed change gear 46 and the gear 5.
The transmission is transmitted to the speed change shaft 49 by selecting one of 0, 51, and 52 and engaging them.

The rotation of the speed change shaft 49 is transmitted to the clutch shaft 53 through the meshing of the gear 54 and the sliding gear 55, but during normal driving, the clutch gears 56 and 57 are both clutch-coupled with the sliding gear 55. Latch gear 56.57
By meshing with the gears 63 and 64, the drive wheels 22 on both sides rotate and the roller 25 runs.

When the machine is to be turned, one of the side clutch levers in the control box 19 is operated to slide the clutch gear 56 or 57 on the turning side. 22 is decelerated and the machine base turns.

In the case of an even sharper turn, the clutch gear 56 or 57
If the brake plate 58 is allowed to slide further, the drive wheel 22 is suddenly braked and the machine base turns sharply.

On the other hand, the rotation of the drive shaft 38 is transmitted to the reaping drive shaft 65 through the connection of the chain wheels 66, 67 and the reaping latch 68.
Further, due to the meshing of the bevel gears 72 and 76, the power is transmitted to the cutting blade 8 and the lifting device 6 via the transmission shaft 75 and the like.

Further, the rotation of the reaping drive shaft 65 is transmitted to the culm transport device 9 via the transport drive shaft 84 and the like by the engagement of the coupling 81 and the bevel gears 82 and 83.

On the other hand, the rotation of the intermediate shaft 30 of the threshing section 3 is controlled by the handling cylinder 11.
．． is transmitted to the swinging shelf 85 and the second spiral conveyor 86,
The rotation of the second spiral conveyor 86 is further transmitted to the first spiral conveyor 87 and the winch 13, and from the winch 13 to the straw cutter 20.

Further, the rotation of the handling cylinder 11 is transmitted to the feed chain 17.

Furthermore, by operating the hydraulic pump 28, the hydraulic cylinder 77 is activated, and the reaping frame 74 swings around the pivot member 73 of the gear box 31, and the reaping section 2
The whole thing goes up and down.

As is clear from the above explanation, according to the present invention, the gear box of the drive device that drives the running section and the reaping section of the combine is arranged vertically so that it extends from below the inlet funnel toward the running section. By forming it into a shape and integrally providing the pivot member of the reaping section at its upper end, the drive device is close to the running section and the reaping section, and is integrated with the pivot member of the reaping section below the inlet funnel. As a result, the drive device can be significantly simplified and downsized, and the stroke of the hydraulic cylinder that raises and lowers the reaping section and the length of the reaping frame can be shortened.

This is especially effective in making the structure of a small combine harvester more compact.

[Brief explanation of the drawing]

1 to 6 show a drive device for a combine harvester according to the present invention, FIG. 1 is a side view of a combine implementing this, FIG. 2 is a rear view, and FIG. 3 is a front view of the drive device. FIG. 4 is a perspective view of A in FIG. 3, FIG. 5 is a vertical cross-sectional view similar to FIG. 3, and FIG. 6 is a power transmission path diagram. 1... Combine harvester, 2... Reaping section, 4
......Traveling section, 12...Handling room, 21.
...Inlet funnel, 26 ...Engine, 29
... Drive device, 31 ... Gear box, 35 ... Input shaft, 46 ... Speed change gear, 56.57 ... Clutch gear ,61,62・
...Travel drive shaft, 65...Reaping drive shaft,
73... Pivotal part material, 74... Reaping frame.

Claims (1)

[Scope of utility model registration request] A vertically formed gear box extends from below the inlet funnel protruding from the handling chamber entrance toward the reaping section toward the running section, and from the upper end of this gear box downwards. an input shaft that is driven by an external drive source that is rotatably supported by the gearbox; a pair of left and right traveling drive shafts that are rotatably supported by the lower end of the gearbox and are driven by the input shafts via transmission gears and clutches; A reaping drive shaft is rotatably supported at the upper end and driven by the input shaft, and the upper end of the reaping frame that supports the entire reaping group is rotatable by a pivot member provided at the upper end of the gear box. A drive device for a combine harvester, characterized in that it is pivotally supported by.