JP2001336589A - Transmission device of combined harvester and thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a strength of a mounting part of respective tension arms to which a tension pulley for expanding respective transmission belts transmitting a motive power is mounted and a strength of a mounting part of a turn lever operated at the time of a turn traveling. SOLUTION: In a tension arm 30 to which a tension pulley 29 is mounted, an operation frame 17 and a support plate 37 provided on a hydraulic continuously variable transmission device 23 are connected by a vertical support frame 38. A reaping tension arm 33 which is provided on the support plate 37 and to which a reaping tension pulley 32 is mounted is provided on a transmission case 22 connecting the hydraulic continuously variable transmission device 23 and a transmission case 22 for traveling. A turn lever 31 for changing a traveling speed at the time of turn traveling is mounted to the operation frame 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension arm having a tension pulley for extending a power transmission belt for inputting power from an engine to a hydraulic continuously variable transmission. This is a technique in which a plate is connected to an upper and lower support frame and provided on the support plate, and can be used as a combine transmission device.

[0002]

2. Description of the Related Art Harvesting of pilgrim culm by combine
The power from the engine of the combine is transmitted to the output belt for the engine and the hydraulic input pulley of the hydraulic stepless transmission provided in the vicinity of the transmission transmission case by the transmission belt. A tension arm attached with a tension pulley provided on a support plate attached to the transmission is constantly stretched and power is input to the hydraulic continuously variable transmission, and the hydraulic continuously variable transmission transmits the transmission case to the transmission case. Power is input into the inside, and the traveling device travels while being rotationally driven by a transmission mechanism in the transmission case.

[0003] A cutting power transmission belt stretched over a case output pulley of the transmission case and a cutting input pulley of the reaper is provided with a cutting tension pulley rotatably provided on a support plate mounted on the transmission case. By inputting the cutting tension arm, power is input to the reaper, the reaper is driven to rotate, the reaping culm is cut by the reaper, and the reaping culm is transferred by the reaper and threshing. It is supplied to the machine and threshed, and the threshed grain is temporarily stored in a combine.

When the combine is turned during the harvesting operation, the combine can be turned on a support plate mounted on an operation frame provided on the lateral outside of the cockpit, depending on the condition of the field and the falling state of the grain culm. Is operated by operating the turning lever provided at the lower turning speed or the higher turning speed.

[0005]

SUMMARY OF THE INVENTION A tension arm that constantly extends a transmission belt for inputting power from an engine to a hydraulic continuously variable transmission through a tension pulley is provided in the hydraulic continuously variable transmission. The power is input to the support plate provided, and the power is input, and the power input to the traveling transmission case from the hydraulic continuously variable transmission is transmitted to the reaper transmission belt for inputting power to the reaper from the transmission case. A cutting tension arm for turning on and off the cutting tension pulley is rotatably mounted on a support plate provided on the transmission case, and a turning lever for changing a turning speed is freely rotatable on a support plate provided on the operation frame. Are provided, the strength of each of these support plates is insufficient due to the fact that they are not firmly mounted. In some cases, the swing lever is swung and it is difficult to operate to a predetermined position, or the on / off operation and the shift operation are not reliably performed. However, the present invention will solve these problems. It is assumed that.

[0006]

For this purpose, the present invention spans a hydraulic stepless transmission 23 for inputting the power of the engine 20 to shift the speed, an engine output pulley 27a and a hydraulic input pulley 27b. Arm 3 equipped with tension pulley 29 for extending transmission belt 27c
0 and an upper and lower support frame 38 for connecting the operation frame 17 provided on the left side of the upper cockpit 19 in the front-rear direction and the lower support plate 37 mounted laterally outside the hydraulic continuously variable transmission 23. In the combine, the support fulcrum (b) for attaching the tension arm 17 is provided on the support plate 37, and the operation frame 17 is provided with a fulcrum (b) for turning the turning lever 31 for changing the turning speed during running turning. A transmission case 22 for inputting the power of the hydraulic continuously variable transmission 23 to a transmission transmission case 21; an output unit 28 for outputting power to the reaper 6 for cutting the stalks in the transmission case 22; Tension arm 33 equipped with a cutting tension pulley 32 for turning on and off the power output to the machine 6
And a rotation supporting point (c).

[0007]

The harvesting operation of the pilgrim culm by the combine is performed by using the output pulley 27a for the engine from the engine 20 of the combine and the hydraulic stepless transmission 23 for shifting the power by inputting the power from the engine 20. The transmission belt 27c wrapped around the hydraulic input pulley 27b is provided with an operation frame 17 provided on the left side of the upper cockpit 19 in the front-rear direction.
An upper and lower support frame 38 is provided to connect a lower support plate 37 mounted on the lateral outside of the hydraulic continuously variable transmission 23 to integrally form the three members.
Attachment fulcrum (a) of a tension arm 30 to which a tension pulley 29 for always stretching the extension belt 7c is attached.
7, power is input to the hydraulic continuously variable transmission 23, and power is input from the hydraulic continuously variable transmission 23 to the transmission case 21 via the transmission case 22,
The traveling device travels while being rotationally driven by the transmission mechanism in the transmission case 21.

Also, a cutting tension arm mounted with a cutting tension pulley 32 for turning on and off the output of power to the reaper 6 from an output portion 28 for outputting power from the transmission case 22 to the reaper 6. A turning support point (C) of 33 is rotatably provided on the transmission case 22, and the cutting transmission arm is turned on via the cutting tension pulley 32 by the “enter” operation of the cutting tension arm 33, so that the cutting transmission belt is rotated. Power is input from the transmission case 22 to the reaper 6, the reaper 6 is driven to rotate, the reaping culm is cut by the reaper 6, and the reaping culm is transferred by the reaper 6 to the threshing machine. And threshed, and the threshed grain is temporarily stored in a combine.

When the combine is turned during the harvesting operation, the combine is rotatably mounted on an operation frame 17 provided on the lateral outside of the cockpit 19, depending on the condition of the field and the falling state of the grain culm. Turn the swing lever 30 at a slow swing speed,
Or turn to a high turning speed.

[0010]

The effect of the first aspect is that the operation frame 17 and the support plate 37 mounted on the hydraulic continuously variable transmission 23 are connected by the upper and lower support frames 38, and these three are integrally formed and reinforced. Attaching the tension arm 30 with the tension pulley 27 extending the transmission belt 27c for inputting the power of the engine 20 to the hydraulic continuously variable transmission 23 to the strengthened support plate 37 By providing the fulcrum (a), the mounting portion of the mounting fulcrum (a) is strengthened, and the mounting portion of the tension arm 30 is prevented from swinging, whereby power is transmitted reliably.

The effect of claim 2 is that when turning the combine, the turning fulcrum (b) of the turning lever 31 for switching the speed of turning traveling to a high turning speed or a low turning speed.
Is provided directly on the reinforced operation frame 17, so that the operation of the turning lever 31 is facilitated and the switching operation can be reliably performed.

The effect of the third aspect is that the hydraulic stepless transmission 23 is connected to the transmission case 21 via the transmission case 22.
And a mowing tensioner pulley 32 mounted on the transmission case 22 for outputting power to the reaper 6 for reaping the culm, and a reaping tension pulley 32 for turning power on and off to the reaper 6. By providing the pivot point (c) for rotating the tension arm 33, the mounting portion is strengthened, which facilitates the operation of the mowing tension arm 33,
The "on" and "off" operations can be performed reliably, and the power of the engine 20 is input to the transmission case 21 via the hydraulic continuously variable transmission 23 and the transmission case 22 so that the power can be reduced. Communication is assured.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A tension arm 30 equipped with a tension pulley 29 for extending a transmission belt 27c for inputting the power of the engine 20 of the transmission 3 mounted on the traveling chassis 2 of the combine 1 to the hydraulic continuously variable transmission 23, and for traveling turning. The turning lever 31 rotatably provided to switch the turning speed and the power to be output to the reaper 6 are turned on.
An attachment portion such as a cutting tension arm 33 which is rotatably provided with the cutting tension pulley 32 to be "cut" is illustrated and described.

As shown in FIG. 7, a traveling device 4 having a pair of left and right traveling crawlers 4a for traveling on the soil surface is disposed below the traveling chassis 2 of the combine 1, and the traveling device 2 is located above the traveling chassis 2. Has a configuration in which a threshing machine 5 is mounted. The reaping grain culm is cut by the reaper 6 on the front side of the traveling platform 2, and the reaping culm is transferred by the reaper 6, and is taken over by the feed chain 7a and the holding rod 7b of the threshing machine 5 to be transferred. A grain storage tank 8 for threshing, collecting threshed and sorted kernels and temporarily storing them is mounted on the right side of the threshing machine 5.

At the front of the threshing machine 5 and on the front side of the traveling undercarriage 2, as shown in FIG. 7, a narrow guide 9a for separating the raised culm from the front end position and a weeding body 9b, and the separated grain culm are attached. A raising device 10 for raising, a raking and transferring device 11a for raking and transferring the raised grain, a cutting blade device 12a for cutting the raked grain culm, and a threshing machine 5 for transporting the harvested cereal stem. The reaper 6 provided with a cereal culm transfer device 11b for delivering the feed chain 7a to the feed chain 7a and the holding rod 7b is supported by a telescopic cylinder 12 driven by hydraulic pressure.
Is used as a center of rotation so as to be able to move up and down on the soil surface.

The reaper 6 is provided with a support rod 13 which is inclined from the lower front part to the upper rear part as shown in FIGS.
At the upper end of the support rod 13, a support pipe rod 14 having a transmission mechanism 14a therein is provided in the left-right direction. The support pipe rod 14 is supported by a support device 15 provided on the upper side of the traveling chassis 2 and is connected to the support pipe rod 14. The reaper 6 is supported rotatably up and down as a center of rotation. The support pipe rod 14
The cutting input pulley 16 for inputting power to the reaper 6 is rotatably supported on the right end of the transmission mechanism 14a at the right end in plan view.

As shown in FIG. 7, an operating device 18 for starting, stopping and adjusting each part of the combine 1 and an operator for performing these operations are mounted on the front part of the threshing machine 5 side. A cockpit 19 is provided, and below the cockpit 19,
An engine 20 is mounted on the upper side of the traveling chassis 2, and a grain storage tank 8 is disposed on the rear side. The traveling device 4, the threshing machine 5, the reaper 6, and the engine 20
Thus, the fuselage 1a of the combine 1 is configured.
For example, a quadrangular operation frame 17 is provided on the left outer side of the cockpit 19 from a portion near the front end of the operation device 18 to a rear portion of the threshing machine 5.
8 and a cockpit 19 are supported.

FIG. 9 shows a surface 18a of the operating device 18.
As shown in the figure, various operation levers, various operation dials, various operation switches and the like are provided, but only the main parts are displayed. 34a is a direction control lever for switching the running direction, 34b is a reaping clutch lever for starting and stopping the reaper 6, 34c is a main transmission lever for switching the traveling speed, 34d is an auxiliary transmission lever, and 31 is a turning lever for turning. The turning lever switches the turning traveling speed between a high turning speed and a low turning speed. 35 is a speed metal. Three
6a is a handling depth adjustment dial, and 36b is a cutting height adjustment dial.

In the culm transfer path formed by the cereal culm transfer device 11b of the reaper 6, the culm is fed to the threshing machine 5 by contacting the culm which is cut and transferred. This is a configuration provided with a cereal stalk sensor 6a for detecting stalks. A vehicle speed sensor 21a for detecting a traveling vehicle speed based on the output rotation speed is provided in a transmission path of a traveling transmission case 21 mounted on a front end portion of the traveling chassis 2.

At the bottom of the grain storage tank 8, a back and forth transfer spiral 8a for transferring the stored grains to the rear is provided in the front and rear direction, and the grains transferred to the rear are taken over, and the joint case 8b is taken over. The vertical transfer cylinder 24 in which a vertical transfer spiral 24a that changes the direction via the inside is provided rotatably in a substantially vertical posture, on the upper side of the joint case 8b and on the rear side of the grain storage tank 8.

At the upper end of the vertical transfer cylinder 24, the entire length of the vertical transfer cylinder 24 extends over the front and rear length of the combine 1,
Discharge auger 2 that has a retractable discharge spiral 25a and is capable of discharging the grains outside the machine in a telescopic, vertically rotatable, and swivelable manner.
5 is provided. Engine 20 of the transmission 3
The hydraulic continuously variable transmission 23 equipped with a transmission mechanism 26a for inputting the power (rotation) of the motor and a hydraulic mechanism 26b, etc.
As shown in FIG. 6, the transmission case 22 is attached to the traveling transmission case 21 via the transmission case 22. The transmission case 22 is moved to the lower right of the hydraulic continuously variable transmission 23 when viewed from the front.
Of the transmission case 22 is attached to the upper right side of the transmission case 21 as viewed from the front by bolts or the like. It is a configuration that increases strength and is firmly supported.

In the transmission case 22, a transmission mechanism 22a is provided as shown in FIG. As shown in FIGS. 1 to 6, the power of the engine 20 is transmitted by a transmission belt 27 that extends over a two-stage pulley 27 a provided on the hydraulic continuously variable transmission 23 and a two-stage pulley 27 a provided on the engine 20.
c, 27c. The input power is shifted in the hydraulic type continuously variable transmission 23 and input to the transmission mechanism 22a in the transmission case 22. From the transmission mechanism 22a, the transmission mechanism 21 in the transmission case 21 is transmitted.
b, the wheels 21c, 21c provided on the left and right sides of the final end of the transmission mechanism 21b are rotationally driven, and the traveling sprockets 21d, 21d pivotally supported on the shaft ends of the two axles 21c, 21c are rotationally driven. The traveling crawler 4a, which extends between the traveling sprocket 21d and the driven sprocket 4a at the rear end, is driven to rotate, and the traveling device 4 travels.

Thus, the transmission mechanism 22a can be provided in the transmission case 22, and a transmission means between the hydraulic stepless transmission 23 and the transmission case 21 can be provided. The transmission case 22 has a configuration provided in a space between the transmission case 21 and the support rod 13 that supports the reaper 6 as shown in FIGS. 2, 3, 5, and 6.

Thus, the space between the transmission case 21 and the support rod 13 supporting the reaper 6 can be effectively used. Further, the body 1a can be made compact. Each of the transmission belts 27c laid over the engine output pulley 27a of the engine 20 and the hydraulic input pulley 27b of the hydraulic continuously variable transmission 23 has a tension shaft 30a fixedly provided at the distal end of the tension arm 30. A tension pulley 29 is rotatably supported by the motor and a tension pulley 29 is provided. The tension pulley 29 constantly stretches and transmits the tension. The power (rotation) of the engine 20 is transmitted by the hydraulic stepless transmission 23. The input is performed by the transmission belts 27c of the navel.

As shown in FIGS. 1 and 2, the base of the tension arm 30 is mounted on one side of a support plate 37 attached to the left outside surface on the lateral side of the lower hydraulic continuously variable transmission 23 with bolts or the like. An auxiliary mounting plate 37a provided above the
For example, fixedly provided at a predetermined position on the lower surface of the operation frame 17 provided in the front-rear direction on the left side of the upper cockpit 19,
The auxiliary upper and lower support frame plate 38a fixed to the lower end of the quadrilateral upper and lower support frame 38 is configured to be mounted with bolts, nuts and the like. With these support plates 37,
The operation frame 17 and the upper and lower support frames 38 are integrally formed to increase the strength. A mounting fulcrum (a) on the base side of the tension arm 30 is fixedly provided on the inner side of the support pipe 37b fixedly provided on the upper side on the other side of the support plate 37 whose strength has been increased. The supporting shaft 30b is inserted and fixed at a predetermined position, and each transmission belt 27c is stretched by the tension arm 30 via the tension pulley 29. The configuration in which the strength of the mounting portion of the tension arm 30 is increased is such that the deflection of the tension pulley 29 is prevented.

The power (rotation) of the engine 20 is transmitted by each transmission belt 27c and input to the hydraulic continuously variable transmission 23. Since the support plate 37 is reinforced and strengthened, the tension pulley 29 and the tension arm 30 are configured to be able to transmit power stably without swinging.

As shown in FIGS. 1 to 6, the transmission case 22 includes a cutting transmission pulley 28a provided at an output portion 28 of a transmission mechanism 22a provided inside the transmission case 22, and a transmission mechanism 14a for the support pipe rod 14. The reaping input pulley 16 provided at the right end portion in plan view has a configuration in which a reaping transmission belt 28b is stretched. The transmission case 22 is provided in a space between the transmission case 21 and the cutting input pulley 16.

As a result, the transmission case 21
, And the space between the cutting input pulley 16 can be used effectively. Further, the body 1a can be made compact. The power from the transmission case 22 is input to the reaper 6 via the output unit 28 by the reaping transmission belt 28b. The motive power input to the reaper 6 is “in” and “off” of the reaping tension pulley 32 provided at the distal end of the reaping tension arm 33 for driving and stopping the reaping transmission belt 28b as shown in FIGS. The operation is performed by the operation of "OFF".

A support pipe 33a of a pivot (c) provided at the base of the mowing tension arm 33 is inserted into a support shaft 22b provided on the left outer surface of the transmission case 22 to be rotatably supported. In addition, it is a configuration in which retaining is performed. Also, a cutting tension shaft 33b is fixedly provided at the tip of the cutting tension arm 33, and the cutting tension pulley 32 is rotatably supported by the cutting tension shaft 33b.

A rotary plate 33c is fixedly provided at a substantially central position in the vertical direction of the mowing tension arm 33, and one end of a spring 39 is supported by the rotary plate 33c. . A connection cutting wire 39a is provided between the other end of the spring 39 and the cutting clutch lever 34b. The cutting tension pulley 32 is turned on and off by the "on" and "off" operations of the cutting clutch lever 34b.
Are started and stopped.

By providing the rotation supporting point (c) of the tension pulley 32 and the output portion 28 in the transmission case 22, the accuracy of the cutting transmission belt 28b line and the distance between the shafts are improved. Also, the mowing tension arm 30
Is provided on the transmission case 22, it can be firmly supported with a simple configuration.

A turning fulcrum of a turning lever 31 for changing the speed by changing the rotation of the transmission structure 21b in the traveling transmission case 21 to a high speed or a low speed when the vehicle turns. B) is a configuration mounted on a receiving shaft 17a rotatably provided at a predetermined position in the front-rear direction of the reinforced operation frame 17 as shown in FIG. 1 and FIG.

The pivoting lever 3 is rotatably supported on the pivoting lever 31 by a switching pin 31b and a supporting pin 17b provided on the receiving shaft 17a via a receiving shaft 17a.
1c, a connection lot 31d and the like are connected to each other, and the connection lot 31d is connected to a switching lot 21e of the transmission mechanism 21b in the transmission case 21, and the speed is changed by a switching operation of the turning lever 31. is there.

With this arrangement, the pivoting fulcrum (b) of the pivoting lever 31 is mounted on the reinforced operation frame 17, so that the pivoting lever 31 can easily be firmly supported. (B) There was no collapse or deformation of the part, which made it possible to reliably perform the switching operation.

The switching lot 31a of the turning lever 31
Is a structure provided substantially vertically with the upper and lower support frame 38 in side view as shown in FIG. As a result, the cockpit 1
When assembling nine parts to the traveling chassis 2, the switching lot 31
a is suspended downward by its own weight,
It is substantially perpendicular to the upper and lower support frames 38, thereby facilitating assembly.

The rotating metal 40a for mounting the connecting lot 40 connected to the auxiliary transmission lever 34d is rotatably supported by a receiving shaft 40b as shown in FIGS. 1 and 2. The shaft 40b is rotatably supported by a supporting metal 40c, and the rotatable fulcrum (d) of the rotatable metal 40a is located at a predetermined distance above the transmission case 21 and rotatably supported by the supporting metal 40c. .

By providing the pivot point (d) on the supporting metal 40c on the upper part of the transmission case 21, a strong supporting structure can be achieved, and the occurrence of backlash and the variation of products can be reduced. Can be prevented. A connection lot 4 provided on the main transmission lever 34c via a connection plate 41
1a is a configuration provided substantially vertically with the vertical support frame 38 in side view as shown in FIG.

Accordingly, when assembling the cockpit 19 to the traveling chassis 2, the connecting lot 41 a hangs downward due to its own weight, so that the connecting lot 41 a is substantially perpendicular to the upper and lower support frames 38. Assembly becomes easy. The output shaft 22c of the transmission case 22 and the input shaft 22c of the transmission case 21 have the same shaft as shown in FIG.

Thus, the output shaft 2 to the reaper 6 side
The supporting portion 2c can be narrowed, and the transmission case 22 can be made compact. The transmission mechanism 22a in the transmission case 22 is configured as a unit as shown in FIG. 6 and has a configuration capable of responding to the vehicle speed of each model.

Thus, since the traveling transmission case 21 can be shared, it is possible to prevent erroneous assembly of similar parts of the transmission mechanism 21b in the transmission case 21. The transmission mechanism 22a in the transmission case 22 has a gear transmission configuration as shown in FIG.

As a result, the entire width of the transmission case 22 can be reduced, and the transmission case 22 can be made compact. In addition, it is not necessary to increase the transmission efficiency and to maintain, and it is possible to guarantee the output rotation speed with respect to the input rotation speed. The output shaft 22c of the transmission mechanism 22a in the transmission case 22
As shown in FIGS. 2 and 3, the output is made to the opposite side of the cockpit 19.

Thus, the hydraulic continuously variable transmission 23
Output unit 2 for easily outputting to the reaper 6 to the same side as the input side of the
8 can be provided. Output configuration is easy, and
Cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a transmission unit and each lever unit.

FIG. 2 is an enlarged front view of a transmission unit and each lever unit.

FIG. 3 is an enlarged front view of a transmission unit.

FIG. 4 is an enlarged side view of the transmission unit.

FIG. 5 is an enlarged plan view of a transmission unit.

FIG. 6 is an enlarged front view of a partially sectioned transmission unit.

FIG. 7 is an overall side view of the combine.

FIG. 8 is an enlarged side view of the reaper unit.

FIG. 9 is an enlarged rear perspective view of the operation device.

[Explanation of symbols]

 Reference Signs List 6 reaper 17 operation frame 19 cockpit 20 engine 21 transmission case 22 transmission case 23 hydraulic continuously variable transmission 27a engine output pulley 27b hydraulic input pulley 27c transmission belt 28 output unit 29 tension pulley 30 tension arm 31 turning lever 32 Cutting tension pulley 33 Cutting tension arm 37 Support plate 38 Vertical support frame A Mounting fulcrum B Rotation fulcrum C Rotation fulcrum

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroshi Nishizaki 1 Eighth-Yagura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Engineering department F term (reference) 2B076 AA03 BA05 DA02 DA05 DA15 DB06 DC01 3D052 AA05 BB09 BB10 DD04 EE01 FF02 GG04 GG07 JJ35 JJ37 3J049 AA01 AB01 BA02 BB05 BB14 BB22 BC01 BD01 CA07

Claims (3)

[Claims] 1. A hydraulic stepless transmission 23 for inputting the power of an engine 20 to change the speed, and an engine output pulley 27
a tension arm 30 on which a tension pulley 29 for extending a transmission belt 27c stretched over a hydraulic input pulley 27b, an operation frame 17 provided in the front-rear direction on the left side of the upper cockpit 19, and the lower hydraulic pressure In a combine provided with an upper and lower support frame 38 and the like for connecting to a support plate 37 mounted on the lateral outside of the continuously variable transmission 23, the mounting fulcrum (a) of the tension arm 17 is set to
A transmission for a combine, comprising: 2. A combine transmission according to claim 1, further comprising a turning fulcrum (B) of a turning lever (31) for changing a turning speed during traveling turning on said operating frame (17). 3. A mowing machine according to claim 1, further comprising: a transmission case for inputting power of said hydraulic continuously variable transmission to a traveling transmission case; And a cutting tension arm 3 equipped with a cutting tension pulley 32 for turning on and off the power output to the reaper 6.
3. A combine transmission having three pivot points (c).