JPS58206468A - Drive device of combine - Google Patents

Abstract

PURPOSE:To facilitate maintenance work as well as make the device in small size by furnishing a brake shaft equipped with a pair of brake gears, right and left, which mesh with the right and left clutch gears when the shaft in the direction of disengagement, and by coupling a brake device with this shaft. CONSTITUTION:A pair of brake gears 27, 28, right and left, which mesh with the right and left clutch gears 11, 12 when they shift in the direction of disengagement, are mounted on a brake shaft 25 is borne in a position over a side clutch shaft 6. A brake drum shaft 29 to cross the abovementioned brake shaft 25 perpendicularly is borne over it, and the brake shaft 25 and brake drum shaft 29 are put in drive coupling through bevel gears 31, 32. When the clutch gears 11, 12 are shifted individually in the direction of disengagement, the clutch gears 11, 12 on the side which is moved interlocked with this shift will mesh with brake gears 27, 28 to actuate application of brakes to the drive shaft on the side with clutch is disengagement.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling drive device for rotating and stopping left and right running rollers in a combiner.

A combine harvester is equipped with a pair of left and right running rollers that are equipped with a reaping and threshing machine. There is a driving connection between the two. and,
The rotation of the input shaft of the travel gearbox is changed by the transmission and then transmitted to the side clutch shaft, and the left and right side clutches on the side clutch shaft can be selectively connected/disconnected or simultaneously disconnected by operation from the driver's seat. By touching each other, either of the drive wheels on the divided left and right travel drive shafts rotates, stops, or rotates at the same time.

It is configured to run when stopped. By doing this, the machine base turns to the side where the drive wheels have stopped, and when the left and right drive wheels stop at the same time, the machine base will stop.

Such a traveling drive device is generally provided with a brake device, and is configured such that the brake is connected at the same time as the side clutch is disengaged, thereby braking the rotation of the traveling drive shaft. However, in conventional braking devices, independent side brakes are provided for the left and right side clutches on the same axis as the side clutches. It is easy for weeds and mud to become clogged between the machine and the machine, and in order to avoid such clogging, the width of the rollers that run must be restricted or the width of the machine must be widened. In addition, by providing two sets of brake devices, the structure is complicated and maintenance work is troublesome.Furthermore, the high-speed side clutch shaft that is not decelerated must be braked, which makes the brakes difficult to use. As a result, the brake equipment became larger and the width of the aircraft became wider.

The present invention has been made in view of the above problems, and includes a brake shaft to which a pair of left and right brake gears that mesh with the left and right clutch gears when they move in the clutch disengagement direction are fixed; By incorporating a single brake device that brakes the rotation of the travel drive shaft in conjunction with the side clutch disengagement operation, the combine harvester travels with ease of maintenance, downsizing and simplicity of the device, and improved braking power. A driving device is provided. Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 3 show an embodiment of the traveling drive device according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a top view, and FIG. 3 is a sectional view taken along line AA of FIG. 2. be. In the figure, a traveling gearbox 1 is divided into two parts in the axial direction and integrally joined with bolts, and an input shaft 2 drivingly connected to a driving side is pivotally supported at its upper end. A transmission shaft 5 is pivotally supported below the input shaft 2 and is drivingly connected to the input shaft 2 by transmission gears 3 and 4 and another set of transmission gears that can be selectively switched. Furthermore, a clutch shaft 6 is rotatably supported below the speed change shaft 5 via a ball bearing 7. In the center of the clutch shaft 6, a center gear 9 that meshes with an intermediate gear 8 on the transmission shaft 5 is freely rotatable, with its movement in the axial direction being restricted by the collar of the clutch shaft 6 and a snap ring 10. has been done. Side clutch shaft 6
At the top, a pair of left and right clutch gears 11 and 12 with wide tooth widths are located on both sides of the center gear 9 and are freely rotatably and slidably mounted.
1 and 12 and the center gear 9, a clutch is provided on the opposing surface between the center gear 9 and the clutch gears 11 and 12, which are engaged and disengaged by sliding the clutch gears 11 and 12, and the transmission of rotation from the center gear 9 to the clutch gears 11 and 12 is engaged and disengaged. Surfaces 13.14 are formed. 1
5 is a groove that engages the roller 17 of the round shifter 16, and 18 is a clutch spring that urges the clutch gears 11, 12 in the direction of meshing with the center gear 9. Furthermore, below the side clutch shaft 6, a pair of traveling drive shafts 19 and 20, which are divided at the center of the traveling gearbox 1 and formed into left and right separately, are connected to a ball bearing 21 and a ball bearing ( Travel drive gear 23 is rotatably supported by a shaft (not shown) and fixed to the inner end thereof.
24 meshes with the clutch gears 11 and 12, respectively. Drive wheels for running rollers (not shown) are attached to the tips of the left and right running drive shafts 19, 20.

On the other hand, a brake shaft 25 is pivotally supported diagonally above the side clutch shaft 6 via a ball bearing 26.
On this brake shaft 25, each left and right clutch gear 11
A pair of left and right brake gears 27 and 28 that individually mesh with the brake gears 27 and 12 when the brake gears 27 and 12 move in the clutch disengaging direction are pivotally mounted. Further, above the brake shaft 25, a brake drum shaft 29 perpendicular to the brake shaft 25 is connected to a ball bearing 30.
The brake shaft 25 and the brake drum shaft 29 are coupled via bevel gears 31 and 32.

The one generally designated by the reference numeral 33 is a conventionally known drum type brake device that brakes the rotation of a shaft by expanding a brake shoe and applying friction between the outer circumferential surface of the brake shoe and the inner circumferential surface of the brake drum. A cylindrical brake drum 34 is fixed to the casing 35, and a lid 36 of a casing 35, which is provided integrally with the traveling gearbox 1, has a cylindrical brake drum 34 fixed thereto. A pair of brake shoes 37 formed in a semicircular arc shape are pivotally supported by a pin 38. brake shoe 37
A cam 40 on a pin 39 pivotally supported by the lid body 36 faces between the other ends, and by rotating the pin 39 with an operating device described later, the cam 40 can be rotated by 90 degrees. Then, the brake shoe 37 is opened at the center of the pin 38 at the large diameter part, and the friction with the inner peripheral surface of the brake drum 34 causes the brake drum shaft 2 to open.
It is configured to brake the rotation of 9.

The configuration of the operating device for the side clutch device and brake device 33 configured as described above will be explained.

A clutch arm 42 formed in an L-shape is attached to a clutch arm shaft 41 which is pivotally supported on both sides of the traveling gearbox, and a wire 43 having one end pivotally attached to one free end thereof. The other end is connected to a side clutch lever (not shown). By individually operating the left and right side clutch levers, the clarifier cam 42 swings, and the shifter 16 on the shifter shaft 45 swings to the left and right by the action of the side clutch cam 440 at the tip of the clutch arm shaft 41. Left and right side clutches made up of clutch gears 11 and 12 and center gear 9 are configured to be connected and disconnected individually. On the other hand, a roller lever 4 is attached to both ends of a lever shaft 48 supported by a stay 47 on a frame 46 on the machine side.
Each roller lever 49 is fixed by a dividing wire.
A row 25G pivotally attached to the free end of the clutch arm 42 is engaged with the clutch arm 42 so as to be able to follow the clutch arm 42 in only one direction.

Further, one end of a connecting rod 52 is pivotally connected to the free end of the brake lever 51 which is pivoted to one end of the lever shaft 48, and the other end of the connecting rod 52 is connected to the lid 36. It is pivotally connected to the free end of an L-shaped brake arm 53 fixed to a pin 39 protruding from the brake arm. Then, by individually operating each of the left and right clutch levers in the clutch disengagement direction, the operated clutch is disengaged, and at the same time, in conjunction with this operation, the clutch arm 42 kicks up the roller 50, and the roller lever j' 9. The rotation of the cam 40 via the brake lever 51 degree connecting rod 52 and the brake arm 53 opens the brake 7 37 and brakes the brake drum shaft 29.

The operation of the traveling drive device configured as above will be explained. The rotation transmitted from the driving side to the input shaft 2 is transferred to the transmission gear 3.
, 4t or the other transmission gear and is transmitted to the transmission shaft 5, the intermediate gear 8 on the transmission shaft 5 is transferred to the center gear 9.
transmitted to. At this time, if the clutch surfaces 14 of the left and right clutch gears 11.12 are engaged with the clutch surfaces 13 of the center gear 9 by operating the side clutch levers, the rotation of the center gear 9 will be caused by the left and right traveling through the clutch gears 11.12. This is transmitted to the drive gears 23, 24, and the running rollers stretched between drive wheels on the left and right running drive shafts 19, 20 simultaneously rotate, causing the machine to move straight.

Next, for example, if you want to turn the machine to the left, operate the left side clutch lever and pull the wire 43.
The clutch arm 42 rotates clockwise in FIG.
By moving away from the vehicle, the left side clutch is disengaged. At the same time, the clutch arm 42 raises the roller 50 and rotates the lever shaft 48 counterclockwise in FIG. 2, so that the brake lever 51. The cam 40 on the pin 39 rotates via the connecting rod 52 and the brake arm 53 to open the brake shoe 37, and the brake drum shaft 290 rotation is braked by friction with the inner peripheral surface of the fixed brake drum 34. be done.

At this time, the movement of the clutch gear 12 causes it to mesh with the brake gear 28, and the brake shaft 25 and the traveling drive shaft 20 are connected through the meshing of the gears 28, 12, and 24, so that the clutch gear 12 rotates due to the traveling inertia. Of the traveling drive shafts 19, 21 that continue to rotate, only the left traveling drive shaft 20 is braked from rotation, and the machine base turns to the left. After turning, the side clutch is reconnected by operating the side clutch lever, and at the same time, the clutch arm 42 escapes from the rollers 50.
Since the braking by the brake device 33 is released via the lever shaft 48 and the like, the traveling drive shaft 20 is rotated again by the drive from the input shaft 2 side, and the machine moves straight. At this time, the brake shaft 25
stops. When turning to the right, one set of brake devices 33 is shared and the same operation as when turning to the left is performed, and by operating both side clutch levers, both side clutches are disengaged. In conjunction with this, the brake device 33 operates to stop the nine aircraft.

FIG. 4 is a side view of the essential parts of a travel drive system showing another embodiment of the present invention. Since the other parts provided on the 25 are the same as those in the previous embodiment, each part will be given the same reference numerals as in the previous embodiment and the explanation thereof will be omitted.This embodiment has fewer parts than the previous embodiment. Although the structure is simplified to a lesser extent, this embodiment is superior to this embodiment in terms of reducing the axial width of the entire device. Further, each of the above embodiments has shown an example in which both operating levers are driven and connected by an arm or the like as a mechanism for moving the engaging/disengaging operation of the side clutch and the engaging/disengaging operation of the brake device. Directly linked to the movement of the clutch gears 11 and 12, such as by using the rotation of the brake shaft 25 to open the brake shoes 31 using this rotational force to obtain braking force. The brake device 33 may also be activated.

As is clear from the above description, according to the present invention, when the left and right clutch gears move in the clutch disengagement direction in the traveling drive device of a combine, the pair of left and right brake gears that mesh with the left and right clutch gears are fixed. If a brake shaft is provided, and one brake device is connected to this brake shaft, which brakes the rotation of the travel drive shaft in conjunction with the disengagement operation of the side clutch. Instead of each set being provided separately, one set is now shared for both the left and right side clutches, simplifying the structure and making maintenance easier, as well as significantly reducing the width of the device in the axial direction. The distance between the running rollers can be widened without reducing the width of the running rollers, and this area is no longer clogged with weeds and mud, which makes running smoother and reduces maintenance effort. Reduced.

[Brief explanation of drawings]

1 to 4 show an embodiment of the traveling drive device for a combine harvester according to the present invention, FIG. 1 is a plan view thereof, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view taken along line AA in FIG. 2. , FIG. 4 is a sectional view of the main part of a travel drive device showing another embodiment of the present invention. 6...-side clutch shaft, 9.ψ...center gear,
11,12ψ・-・Side clutch gear, 13.14-
・O・Clutch surface, 19.20... Travel drive shaft, 2
5...Brake shaft, 27°28...-Brake gear, 29...Brake drum shaft, 31,320...-
・Bevel gear, 33ease brake device 0 Patent applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Masaki Yamakawa (and one other person) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A side clutch shaft that is individually drivingly connected to the left and right travel drive shafts, and a pair of left and right side clutch gears that individually connect and disconnect the rotation of the travel drive shafts by sliding on this side clutch shaft. A travel drive device for a combine harvester comprising: a brake shaft fixed with a pair of left and right brake gears that mesh with each of the side clutch gears when the side clutch gears move in the clutch disengagement direction; A travel drive device for a combine harvester, characterized in that one brake device is connected to the brake shaft to brake rotation of the travel drive shaft on the clutch disengagement side via the brake shaft and the side clutch shaft in conjunction with the operation.