JP2002305946A - Transmission-supporting structure in thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission-supporting structure in a thresher, having a gear case 3 with a simplified supporting structure and an improved rigidity by allowing a grain-lifting cylinder 22 to support the input gear case 3 for transmission for threshing. SOLUTION: This transmission-supporting structure in the thresher 1 has the input gear case 3 for the transmission for the threshing, attached to the grain-lifting cylinder 22 stood on the thresher 1 for the first product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transmission support structure for a threshing transmission input gear case of a threshing machine.

[0002]

2. Description of the Related Art Conventionally, in a threshing machine mounted on a combine or the like, a transmission input gear case having an input pulley that is belt-driven from an engine is supported on a side surface of a threshing machine frame and by a mounting member such as a mounting bracket. The belt is transmitted from the transmission input gear case to the second pulley of the second gutter,
The handling cylinder is configured to be belt-driven from the transmission rotating shaft meshed with the gear.

Further, a support shaft for supporting a tight arm of a tension clutch pulley for turning on / off the power of a belt on the engine side by a clutch lever and a support shaft for supporting a tight arm of a tight pulley for belting an input pulley are provided with the threshing. Each is attached to the side surface of the machine frame by an individual attaching member.

[0004] The clutch lever of the tension clutch pulley is mounted and supported on a threshing machine frame or a lever frame provided from a control unit.

[0005]

In the conventional threshing machine, the threshing cylinder for transferring the first thing and the input gear case for threshing power are separately fixed to the threshing machine frame. There is a problem that the structure is complicated and the cost is high, for example, the structure must be reinforced so as to form a frame.

In addition, in the above-described structure, it takes a long time to assemble, it is easy to cause an attachment error with other related members, and the maintenance is poor for the same reason.

Further, since the clutch lever also employs a structure in which the clutch lever is attached by a member separate from the support case and the tension clutch pulley, fluctuations between the center of the support case and the tension clutch pulley due to a belt tension load or the like during the operation of the clutch can be prevented. There were drawbacks, such as inaccuracy.

[0008]

The transmission supporting structure of the present invention which achieves the above object is constituted as follows.

1) A threshing transmission input gear case 3 is attached to a first-thrower-lifting-hulling cylinder 22 erected in the threshing machine 1.

2) A rotating shaft 31 having a pulley 30
A thrust arm 5 having a pulley 5a for tensioning a belt is rotatably provided on the threshing transmission input gear case 3 which supports the thruster, and a mounting member 7 for mounting a clutch lever 5L for operating the pulley 5a as a clutch is firstly transferred. It is characterized in that it is connected to the fryer cylinder 22 for use.

3) Further, a tight arm 5 having a pulley 5a for belt tension is rotatably provided on the mounting bracket 22a, and a mounting member 7 for mounting a clutch lever 5L for operating the pulley 5a as a clutch is provided by a first object. It is characterized in that it is connected to the frying cylinder 22 for transfer.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A transmission structure according to the present invention will be described below with reference to the drawings.

A threshing machine 1 is mounted on a machine 1K (FIG. 3) of a harvester such as a combine or a harvester. This threshing machine 1 is mounted in a threshing machine frame 1a of a box-shaped frame body. 2, a swing sorting body (not shown) is swingably supported by a sorting air passage below a handling chamber 2a rotatably supported by the handle 2 and a handling chamber 2b accommodating the handling cylinder 2a.

A first gutter 20 for discharging and transferring the first thing to the outside of the machine and a second gutter 21 (FIG. 4) for transferring and reducing the second thing to the swing sorting body are provided below the swinging sorter. A flaking cylinder 22 which is firmly erected vertically in the vertical direction along the side wall of the threshing machine frame 1a is connected to the first gutter 20, and the grain (first thing) to be transferred is illustrated. Not configured to discharge into the grain tank.

The threshing machine 1 has an input pulley 30 (FIGS. 2 and 4) of a threshing transmission input gear case 3 having a transmission structure according to the present invention, and an engine 4 installed at the front of the threshing machine 1. A belt 41 is wound around the output pulley 40,
It is configured to transmit the second spiral shaft pulley 21a of the second gutter 21 (FIG. 4).

The handle pulley 23 fixed to the end of the handle shaft 2 is configured to simultaneously distribute and transmit power, and the on / off of the power is controlled by a pulley 5a (see FIG. The tension clutch pulleys 4 and 5 are operated by the on / off operation of the clutch lever 5L.

That is, as shown in FIGS. 2 and 7, the threshing transmission input gear case 3 connects the rotating shaft (input shaft) 31 to the threshing machine frame 1.
a, and a transmission rotary shaft 32 having a transmission pulley 32a at an end thereof is axially supported forward along the threshing machine frame 1a, and a threshing transmission input gear case 3 is provided. The gears 31a and 32b provided on both shafts 31 and 32 respectively mesh with each other.

The input pulley 30 is mounted on the shaft end of the rotary shaft 31, and two pulleys, an output pulley 33 having a slightly smaller diameter, are mounted on the outside thereof. The output pulley 33 is connected to the second helical shaft pulley 21a ( 4), a belt 34 is wound around the belt 34, and a tight pulley 6a to be described later is provided below the belt 34.

The threshing machine transmission input gear case 3
As shown in FIGS. 2, 3 and 7, are formed in a symmetrical shape (split type) divided case 3a, 3a which is vertically divided into two. This split case makes the casting process simple and inexpensive.
As shown in FIG. 7, a fixing hole 3b and left and right mounting holes 3c, 3c are formed in each of the holes 3a, 3a, and fixing screws 3d are formed in the respective holes.
And the fixing screw 3e are inserted and fixed to each other to form a mating threshing transmission input gear case 3.

As shown in FIGS. 2 and 3, the threshing transmission input gear case 3 is fixed at its tip to a bracket 22a fixed to a fryer cylinder 22, and at the rear is a threshing machine frame 1a.
The mounting bracket 1c (FIGS. 6 and 7) fixed to the side is fixed and supported in a stable state.

As shown in FIG. 2, the threshing machine frame 1a
The support of the fry cylinder 22 is strengthened by connecting the fry cylinder 22 with the fry cylinder 22 with a bracket 22b.

Further, as shown in FIG.
On the outer periphery of the shaft supporting portion 35 located at the end of the tight arm 5a, 3a, a tight arm mounting portion 3g of a large-diameter circumferential surface penetrating through the mounting hole at the end of the tight arm 5; The tight arm mounting portion 3h of the small diameter outer peripheral surface penetrating the mounting hole of the portion is formed so as to be connected in a stepwise manner with different outer diameters.

The tight arm mounting portion 3h has
By forming together with a retaining groove 3m for releasably engaging a retaining ring 6p such as a C-shaped ring for preventing the fitted tight arm 6 from moving in the axial direction without rattling, thereby preventing the tight arm 6 from coming off. The plurality of tight arms 5 and 6 can be smoothly and rotatably supported on the shaft support 35 at the distal end of the threshing transmission input gear case 3, and can be machined with high precision.

With the support structure of the two tight arms 5 and 6 as described above, first, the tight arm 5 is inserted into the tight arm mounting portion 3g, and then the tight arm 6 is inserted into the small diameter tight arm mounting portion 3h. Further, when the retaining ring 6p is engaged with the retaining groove 3m, the tight arms 5, 6 are rotatably supported on the same axis and adjacent to each other.

The tight arm 5 includes a tight arm mounting portion 3
g, it is free in the axial direction by a small gap with the tight arm 6, so that the rotation can be smoothly performed. Also, the tight arm 6 is a tight arm mounting portion 6.
h, which is supported in a state of being pinched and restricted between one stepped portion of the h and the other retaining ring 6p, enables rotation without rattling, and reliably positions the tight arms 5, 6 and prevents them from coming off. I have.

Since the power input gear case 3 for the threshing machine is firmly supported by the lifting cylinder 22 for transferring the first thing, the tight arms 5 and 6 are also stably supported. The rotating shaft 31, the transmission rotating shaft 32, and the like are supported by the shaft supporting portion 35 of the threshing transmission input gear case 3, and tight arm mounting portions 3g, 3h are formed stepwise on the outer periphery of this portion.

Therefore, the threshing transmission input gear case 3 forming this transmission structure is provided with tight arm mounting portions 3g, 3g.
h is also used as a member for supporting and forming h.
Both tight arms 5 and 6 can be stably supported.

In addition, since no additional mounting member is required, the number of parts is reduced, the structure of the transmission structure can be simplified, and the threshing machine 1 can be reduced in weight. is there.

The tight arms 5 and 6 which are pivotally supported at the tip of the threshing transmission input gear case 3 have different arm lengths below the threshing transmission input gear case 3 and further have different directions. Between the belts 41 and 34 having the diverted paths,
The belt can be tensioned with a simple structure, and the transmission can be performed satisfactorily (FIGS. 4 and 5).

That is, the tight arm 5 is formed in an arc shape, and the tension clutch pulley 5a is pivotally supported at the tip end where the arm length is increased, so that the loose part of the belt 41 is rotatably contacted with the middle part. In addition, the tight arm 5 is formed in a half-moon shape so that a sufficient margin for installing the spring 50 for tensioning the belt of the clutch lever 5L can be provided.

The tight arm 5 locks the spring 50 to operate the operation link 51 of the clutch lever 5L.
4 and 5, the clutch 50 is disengaged in the direction indicated by the arrow from the clutch engaged state shown by the solid line in FIGS. .

At this time, the tension clutch pulley 5a is designed to be able to reliably retreat in its cutting direction by utilizing its own weight.

The tight arm 5, which supports the tension clutch pulley 5a at the tip end, is most suitable to be supported by the threshing transmission input gear case 3 as described above. Can be supported on the mounting bracket 22a side.

As shown in FIGS. 4 and 5, the tight pulley 6a has a length exceeding the movable range of the tension clutch pulley 5a at the distal end of the tight arm 6 shortened to about half the length of the tight arm 5. Spindle 6b having
Thereby, the tension side of the belt 34 is supported so as to increase the winding angle.

Further, the frying cylinder 22 above the tight arm 6
A mounting bracket 22c is protruded at the portion (FIGS. 4 and 5), an adjusting screw 51 is provided on the mounting bracket 22c, and a lower end of the adjusting bracket 51 supports a spring 52 for tensioning the belt. 6 so that the tension of the spring 52 can be adjusted.

According to this configuration, the spring 52 and the adjusting screw 51 can be installed compactly with the fryer cylinder 22 as a firm attachment member, and furthermore, the belt transmission while appropriately tensioning the tight pulley 6a in the belt tension direction. Can be performed favorably.

Further, since the tight arm 6 is supported without looseness by the retaining ring 6p at the tight arm mounting portion 3h at the tip of the threshing transmission input gear case 3, even if the tight pulley 6a is constantly pressed, its vibration and There are features such as the ability to suppress shaking and the like.

Next, the support structure of the clutch lever 5L will be described.

As shown in FIGS. 3, 4 and 5, the clutch lever 5L has a lever frame 7 which is bent in an L shape from the machine base 1K to the rear side on the front side of the engine 4 as an attachment member, and The lever 7 is rotatably supported by a lever shaft 70 projecting from the rear portion of the frame 7, and is positioned and locked so that the lever position can be switched by a lever guide (not shown).

In the illustrated example, the rear portion of the lever frame 7 is connected to a rod-shaped connecting member 71 detachably provided from the fryer cylinder 22 to reinforce and support the lever frame 7 and the lever frame 7 and the connecting member 71. A rigid frame structure that forms a rectangular frame closed by the fryer cylinder 22 and the machine base 1K is configured. When the mounting bracket 1c (FIG. 7) is connected to the connecting member 71, the threshing transmission input gear case 3 can be more stably supported.

Therefore, according to this configuration, the lever frame 7 connected to the fryer cylinder 22 is a simple structure having a sufficient rigidity with a culm-shaped frame, and can suppress the shaking due to vibration and the like. Thus, the clutch lever 5L can be stably supported.

When the on / off operation of the clutch lever 5L is performed, the belt tension of the tension clutch pulley 5a and the tension of the spring 50 are applied to the lever frame 7.
Is repeatedly applied to the connecting member 71.
Of the threshing transmission input gear case 3 and the clutch lever 5L, it is possible to prevent fluctuations and deviations between the cores for a long period of time. As a result, the clutch operation can be performed well and the belt tension is reduced. It is characterized in that it can be kept constant and the belt transmission can be performed well.

Further, by connecting the lever frame 7 to the fryer cylinder 22 via the connecting member 71, the members constituting the frame can be subdivided, so that operations such as processing and assembly of the frame are simplified. There are advantages such as being able to. As a modification of this configuration, the lever frame 7 and the connecting member 71 can be formed as an integral frame.

Next, with reference to FIGS. 1 and 2, a belt transmission structure for rotating the handling drum 2a via the transmission rotary shaft 32 will be described.

The belt 8 is wound around the transmission pulley 32a and the handle pulley 23 located on the side of the transmission pulley 32a.
Tight pulleys 80, 81, and 82 supported on the threshing machine frame 1a are provided inside and outside the belt 8, respectively, to form a belt line, and the transmission pulley 32a and the handle pulley 23 are wound around as shown in FIG. By properly maintaining the angle, the transmission from the threshing machine transmission gear case 3 to the handling cylinder 2a can be accurately performed.

In the threshing machine 1 constructed as described above, when the clutch lever 5L is brought to the solid line position by the clutch operation in the direction opposite to the arrow shown in FIG. 4, the threshing transmission is transmitted from the engine 4 by pushing against the belt 41 with the tension clutch pulley 5a. An input is made to the rotating shaft 31 that is supported by the input gear case 3. Then, the output pulley 33 and the input pulley 30 are simultaneously driven, and the handling cylinder 2a is smoothly driven via the transmission rotary shaft 32, the transmission pulley 32a, and the belt 8, so that threshing work can be performed.

At this time, the threshing machine 1 is mounted on the threshing cylinder 22 which is erected on the threshing machine frame 1a and securely fixed thereto.
A threshing transmission input gear case 3 that supports a rotating shaft 31 having a zero is mounted. Therefore, the threshing cylinder 22 which is firmly erected on the threshing machine frame 1a is also used as a mounting member for the threshing transmission input gear case 3, so that the threshing transmission input gear case 3 can be stably supported. The support structure can have a simple configuration.

Further, since the threshing transmission input gear case 3 can be assembled to the threshing machine frame 1a in a state where the threshing transmission input gear case 3 is assembled in advance to the hoisting cylinder 22, the threshing transmission input gear case 3 and the tension clutch pulley attached to the gear case 3 can be assembled. It is also possible to improve the assemblability of the tight pulley 5a and the tight pulley 6a.

As described above, threshing transmission input gear case 3
Is best used as a support member for the tight arm 5 supporting the tension clutch pulley 5a, but the rotation fulcrum of the tight arm 5 is used as a member for supporting the support shaft.
It is also possible to attach to the mounting bracket 22a fixed to 2.

Since the clutch lever 5L for clutching the tension clutch pulley 5a is supported as a rigid frame structure composed of the lever frame 7 connected to the hoisting cylinder 22, the clutch operation of the tension clutch pulley 5a and the tight pulley 6a are used. There is a feature that the belt tension and the like can be performed smoothly.

By providing a mounting seat for the threshing transmission input gear case 3 and a mounting seat for the tension spring 50 of the belt in the lifting cylinder 22, the assembly of the threshing transmission input gear case 3 is assembled to the lifting cylinder 22. In the threshing machine frame 1a
Can be assembled.

[0052]

The power transmission support structure of the threshing machine according to the present invention is characterized in that the threshing transmission input gear case 3 is mounted on the first cargo transfer ferry cylinder 22 erected on the threshing machine 1.

Therefore, the threshing machine 22 can be fixed to the threshing machine frame 1a with the threshing machine transmission input gear case 3 attached to the threshing cylinder 22, so that the assemblability and maintainability are significantly improved.

Further, since the threshing transmission input gear case 3 is fixed to the hoisting cylinder 22 as described above, this fixing is ensured.

Further, a tight arm 5 having a pulley 5a for belt tension is rotatably provided on the mounting bracket 22a, and a mounting member 7 for mounting a latch lever 5L for operating the pulley 5a as a clutch is attached to the first object transfer member. It is characterized in that it is connected to the fryer cylinder 22, so that the support structure of the tight arm 5 is strengthened and the operation can be performed accurately.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a threshing machine provided with a transmission support structure according to the present invention.

FIG. 2 is a plan view showing a configuration of a main part of FIG.

FIG. 3 is a side view showing a main part of the threshing machine corresponding to FIG. 2;

FIG. 4 is a side view of a driving device of the threshing machine.

FIG. 5 is an enlarged view of a main part of the driving device of FIG. 3;

FIG. 6 is a front view showing a transmission support structure of the threshing transmission input gear case.

FIG. 7 is a plan sectional view showing the internal structure of the gear case.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Threshing machine 1a Threshing machine frame 2 Handling cylinder shaft 3 Threshing transmission input gear case 3a Split case
35 Shaft support 3p Retaining ring 3g, 3h Tight arm mounting part 5 Tight arm 5a Pulley (tension clutch pulley) 5L Clutch lever 6 Tight arm 6a Pulley (Tight pulley) 7 Lever frame 22 Lifting cylinder 22a, 22b Mounting bracket (Mounting member) 30 pulley (input pulley) 31 rotating shaft

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B076 AA03 BA03 BA08 DA09 DB06 DC01 2B092 AA01 CA02 CA56 CA62 CB01

Claims (3)

[Claims] 1. A threshing machine transmission support structure in which a threshing transmission input gear case 3 is attached to a first thing transporting threshing cylinder 22 erected on the threshing machine 1. 2. A thrusting transmission input gear case 3 supporting a rotary shaft 31 having a pulley 30
a, and the mounting member 7 for mounting the clutch lever 5L for clutching the pulley 5a is attached to the first cargo transfer cylinder 22.
2. The transmission support structure for a threshing machine according to claim 1, wherein 3. A tight arm 5 having a pulley 5a for belt tension is rotatably provided on a mounting bracket 22a, and a mounting member 7 for mounting a clutch lever 5L for operating the pulley 5a as a clutch is attached to a first object transfer member. The power transmission support structure for a threshing machine according to claim 1, wherein the power transmission supporting structure is connected to the lifting cylinder (22).