WO2013115281A1

WO2013115281A1 - Combine

Info

Publication number: WO2013115281A1
Application number: PCT/JP2013/052112
Authority: WO
Inventors: 今田　光一
Original assignee: ヤンマー株式会社
Priority date: 2012-01-30
Filing date: 2013-01-30
Publication date: 2013-08-08
Also published as: KR101726284B1; CN104080327B; CN104080327A; KR20140119161A

Abstract

Provided is a combine configured so that other parts can be easily installed therein and so that work for opening a harvesting section can be efficiently performed. A combine (100) is configured so that power from the engine (9) is changed in speed by a transmission (41) and the power having been changed in speed is transmitted to the harvesting first shaft (53) of the harvesting section (3) through a torque adjusting mechanism (54). The harvesting section (3) can be opened by being rotated to the left and right in the horizontal direction. A power transmitting second gear (86) and a harvesting input gear (96) are respectively provided to the output side of the torque adjusting mechanism (54) and the other side of the harvesting first shaft (53), and the power transmitting second gear (86) and the harvesting input gear (96) are meshed with each other. When opening the harvesting section (3), the power transmitting second gear (86) of the torque adjusting mechanism (54) and the harvesting input gear (96) of the harvesting first shaft (53) are separated from each other.

Description

Combine

The present invention relates to the technology of combine, and more particularly to the technology of combine that transmits power from an engine to a reaper via a torque limiter.

Conventionally, there is a combine that transmits power from an engine to a reaper via a torque limiter, and includes a torque limiter inside a counter case (see, for example, Patent Document 1). The torque limiter is configured to be capable of interrupting the power transmission to the reaper, and for example, when the reaper drive load on the rotary shaft side of the counter case increases, the power transmission to the reaper by the action of the torque limiter Can block

Patent No. 4109604

However, in the conventional configuration, the number of parts is increased by providing the counter case. In addition, the space for arranging the counter case is required, and the place for arranging other parts is limited. Also, since the belt was used to transmit power from the torque limiter to the reaper input shaft of the reaper, removal of the belt was necessary when the reaper was opened.

Then, in view of the subject which concerns on this invention, another component can be arrange | positioned easily and the combine at the time of opening the reaper part can be performed efficiently.

The problem to be solved by the present invention is as described above, and next, means for solving the problem will be described.

That is, according to claim 1, the power from the engine is shifted by the transmission, and the power after shift is transmitted to the reaping input shaft of the reaping portion through the torque limiter, and the reaping portion is horizontally horizontal Gears are provided on the output side of the torque limiter and on the other side of the reaper input shaft and meshed with each other. When the reaper is opened, the gear of the torque limiter and the gear of the reaper input shaft are separated. It is

In the present invention, the torque limiter is provided on one end side of the reaper input shaft.

According to a third aspect of the present invention, the power transmission member from the traveling unit and the power transmission member from the threshing portion are disposed on the input side of the torque limiter.

According to a fourth aspect of the present invention, there is provided a combine gear having a power transmission mechanism for transmitting power from an engine to a reaper, wherein the power transmission mechanism includes a first transmission shaft and a plurality of gears from the first transmission shaft. And a torque limiter for protecting the power transmission mechanism during overload between the first transmission shaft and the first cutting shaft. A support member which is rotatable in the horizontal horizontal direction to be openable and which supports the first cutting shaft that rotates with the cutting portion at the time of work, a gear case for storing the plurality of gears, and the torque limiter are stored. A torque limiter case is integrally provided.

According to a fifth aspect of the present invention, a lubricating oil storage portion is provided in the lower portion of the torque limiter case.

According to a sixth aspect of the present invention, there is provided a first rotation detection means for detecting a rotation on the power transmission upstream side of the torque limiter, and a second rotation detection means for detecting a rotation on the power transmission downstream side of the torque limiter. Is provided.

The power transmission mechanism according to claim 7, further comprising: a power transmission mechanism for transmitting power from the engine from the PTO shaft to the reaper, wherein the power transmission mechanism includes a first transmission shaft connected to the PTO shaft and the first transmission shaft. A harvester first shaft for transmitting the power of the vehicle to the harvester through a plurality of gears, the power transmission mechanism being in an overload state between the PTO shaft and the harvester first shaft Is provided with a torque limiter that protects the

In the present invention, the plurality of gears are stored in a gear case, and the torque limiter is provided on the side of the gear case and on the side opposite to the input pulley.

In claim 9, the plurality of gears in the gear case are arranged in a line.

The effects of the present invention are as follows. That is, when the reaper is opened, it is not necessary to remove the belt and work efficiency is improved. Further, since the counter case is not used, the number of parts can be reduced. Moreover, the space which arrange | positions a reaper input shaft and a torque limiter can be put together by providing a torque limiter in the vicinity of a reaper input shaft.

The side view showing the whole composition of the combine concerning a first embodiment of the present invention. The front view which similarly showed the structure of the combine. Similarly, a block diagram showing a power transmission mechanism of an engine. The perspective view which similarly shows a torque adjustment mechanism and a reaper 1st axis | shaft. The top view which similarly shows a torque adjustment mechanism. The plane partial cross section figure which similarly shows a torque limiter. FIG. 5 is a block diagram showing a power transmission mechanism of an engine according to a second embodiment of the present invention. The top view which similarly shows a power transmission mechanism. The side view which similarly shows a power transmission mechanism. The perspective view which similarly shows a gear case and a reaping 1st axis | shaft. The side view which similarly shows a gear case, a torque limiter case, and a supporting member. The side view which similarly shows a gear case. The side view which similarly shows a gear case, a torque limiter case, and a supporting member. The top view which similarly shows a gear case, a torque limiter case, and a supporting member. Similarly, the top view which shows a gear case, a torque limiter case, and a supporting member when a reaper part is in an open state. Similarly, it is sectional drawing of a torque limiter. Similarly, the cross-sectional exploded view of a torque limiter. Similarly the disassembled enlarged view of a torque limiter. Sectional drawing of the torque limiter which provided clearance similarly. The side view which shows a torque plate and a torque roller.

Next, an embodiment of the invention will be described.

First, the whole structure of the combine 100 which concerns on 1st embodiment of this invention is demonstrated using FIG.1 and FIG.2. In addition, the arrow A direction of FIG. 1 is defined as a advancing direction.
The combine 100 includes a traveling unit 2, a harvesting unit 3, a threshing unit 4, a feed chain 5, a grain tank 6, a discharge auger 7, a driving operation unit 8, and an engine 9.
The traveling unit 2 is composed of a pair of left and right crawlers 11. The pair of left and right crawlers 11 supports the traveling body 1. The reaper 3 is a portion for reaping a grain scale and is provided at the front of the traveling body 1. In the present embodiment, the four-row mowing part 3 is provided. The threshing part 4 is a part for threshing the grain remnants harvested in the reaper 3 and is provided at the upper part of the traveling airframe 1. The threshing part 4 has a feed chain 5 for conveying the grain graft backward. The grain tank 6 is a tank for storing grains after threshing, and is mounted on the side of the threshing part 4. The discharge auger 7 is a device for discharging the grain stored in the gren tank 6 to the outside, and is disposed above the gren tank 6. The driving operation unit 8 is provided at the front of the traveling machine body 1 and is provided with an operating device including a driver's seat 12, a steering handle 13, various operating levers, and the like. An engine 9 as a power source is disposed in the traveling airframe 1 below the driver's seat 12.

Next, the structure of the mowing part 3 is demonstrated using FIG.1, FIG2 and FIG.3.
The reaper 3 has a reaper frame 21, a plurality of weighing boards 22 provided at the front end of the reaper frame 21, and a plurality of raising cases 23 provided at a front of the reaper frame 21. The rear part of the reaper frame 21 is supported by the traveling body 1 so as to be able to rotate up and down. The dividing boards 22 are for dividing the uncut grain weirs of the field by four lines, and in the present embodiment, five are provided. The raising case 23 is erected side by side in the left-right direction in a backward inclined posture. Moreover, each raising case 23 is provided with the raising tines 24, respectively, and raises a grain scale.

A star foil 25 and a belt 26 with a projection for scratching are provided at the lower rear of the raising case 23, and the star foil 25 and the belt with a projection 26 scrape the rear of the unharvested grain that has been caused up backward. Incorporate. Further, a cutting blade 27 is provided below the cutting frame 21, and the scraped uncut grain weir is cut by the cutting blade 27.

The lower conveyance device 30 for conveying the root of the reaper from the front to the rear is supported by a reaper frame 21 described later.
The upper conveying device 32 for conveying the tip side of the reaping grain weir backward, and the feed chain 5 of the threshing part 4 at the base and tip side of the four cuttings joined together near the feed end of the lower conveying device 30 A vertical transfer device 34 for receiving and transferring to the feed start end is supported by a vertical transfer drive case (not shown).
Moreover, the reaper 3 has a reaper raising and lowering cylinder not shown. By comprising in this way, it is comprised so that raising / lowering of the reaper part 3 whole is possible by expanding-contracting a reaper raising / lowering cylinder. In addition, by vertically moving the vertical transfer device 34, the depth adjustment can be performed.

In addition, the reaper 3 is horizontal centering on a vertical support shaft 20 erected on one side of the front of the traveling airframe 1 in order to facilitate maintenance of each device, engine, transmission case, etc. therein. It is configured to be rotatable (openable and closable).

Next, the power transmission mechanism of the reaper 3 will be described with reference to FIG.
The power from the engine 9 is transmitted to the transmission 41 of the traveling unit 2 and is transmitted to the PTO shaft 40 projecting from the output side of the transmission 41. A traveling portion output pulley 42 is provided at one end of the PTO shaft 40, and power is transmitted from the traveling portion output pulley 42 to the reaper portion first input pulley 51. A belt is wound between the traveling portion output pulley 42 and the reaper portion first input pulley 51.
On the other hand, the power from the engine 9 is transmitted to various transmission mechanisms (not shown) of the threshing unit 4, and the power is transmitted from the threshing portion output pulley 43 to the reaper portion second input pulley 52. A belt is wound between the threshing portion output pulley 43 and the reaper portion second input pulley 52, and a tension clutch 45 is provided in the middle of the belt.

At the time of normal operation, the tension clutch 45 is in the disengaged state, and power is transmitted from the traveling portion output pulley 42 to the reaper portion first input pulley 51. In addition, when only the pouring operation of cereals is performed when the traveling unit 2 is in the stopped state, since the threshing unit 4 is driven, the threshing unit output pulley is turned on by turning on the tension clutch 45. It is transmitted to the reaper section second input pulley 52 from 43.

The reaper portion first input pulley 51 and the reaper portion second input pulley 52 are connected to a first transmission shaft 81 constituting a torque adjustment mechanism 54, and the output side of the torque adjustment mechanism 54 constitutes a reaper input shaft It is fixed to one end of the uniaxial shaft 53. The first transmission shaft 81 transmits power to the reaper first shaft 53 via the torque adjustment mechanism 54.

In addition, as shown in FIG. 4, the first harvesting shaft 53 is disposed such that the axial direction is in the left-right direction with respect to the traveling direction, and the side of the first harvesting shaft 53 on the torque adjustment mechanism 54 side The engine 9 is disposed at the position indicated by the two-dot chain line in FIG. Further, as indicated by a two-dot chain line in FIG. 4, a cooling fan 17 is provided on the side of the traveling body 1 on the side of the engine 9. The cooling fan 17 is a fan for feeding air from the outside of the airframe to the inside (engine 9 side) to cool the engine. The wind from the cooling fan 17 passes through the engine 9 and is also sent to the space where the first shaft 53 for cutting is disposed. Thereby, the cooling effect by air can be obtained with respect to the reaper first shaft 53 as well.
A bevel gear is fixed to the other end of the first cutting shaft 53, and power is transmitted to the upper conveying shaft 55 via the bevel gear. The upper transport shaft 55 is a shaft for transmitting power to the upper transport device 32.
Further, a bevel gear is fixed at a midway portion of the first cutting shaft 53, and power is transmitted to the second cutting shaft 57 through the bevel gear.

A bevel gear is fixed at a midway portion of the second cutting shaft 57, and power is transmitted to the lower conveyance shaft 60 and the vertical conveyance shaft 61 via the bevel gear. The lower conveyance shaft 60 and the vertical conveyance shaft 61 are shafts for transmitting power to the lower conveyance device 30 and the vertical conveyance device 34, respectively.
In addition, a bevel gear is fixed at the other end of the second cutting shaft 57, and power is transmitted to the third cutting shaft 58 through the bevel gear.

A bevel gear is fixed at the other end of the third cutting shaft 58, and power is transmitted to the cutting blade drive shaft 62 via the bevel gear. The cutting blade drive shaft 62 is a shaft for transmitting power to the cutting blade 27.
In addition, a bevel gear is fixed at a midway portion of the third cutting shaft 58, and power is transmitted to the fourth cutting shaft 65 through the bevel gear.

A bevel gear is fixed at a midway portion of the fourth cutting shaft 65, and transmits power to the transport shaft 67 via the bevel gear and the power transmission shaft 66. The conveying shaft 67 is a shaft for transmitting power to the star wheel 25, the belt with projection 26, the lower conveying device 30, and the upper conveying device 32.
Two gears are fixed to the other end of the fourth cutting shaft 65, and power is transmitted to the fifth cutting shaft 70 via the gears.

A bevel gear is fixed to the other end of the fifth cutting shaft 70, and power is transmitted to the sixth cutting shaft 71 via the bevel gear.
Then, the chains of the plurality of raising cases 23 shown in FIG. 2 are driven from the reaper sixth shaft 71 via the raising

shafts

72, 72, 72 to drive the raising tines 24.

Next, the torque adjustment mechanism 54 will be described with reference to FIGS. 4 and 5.
The torque adjustment mechanism 54 is a mechanism for stopping the transmission of power when a load equal to or more than a predetermined load is applied, and the reaper portion first input pulley 51, the reaper portion second input pulley 52, and the reaper first shaft 53 , And is disposed in the vicinity of one end side of the first cutting shaft 53. More specifically, the torque adjustment mechanism 54 is provided at the rear upper side of the reaper input gear 96 provided at one end side of the first reaper shaft 53.

The torque adjustment mechanism 54 includes a first transmission shaft 81 for fixing the reaper portion first input pulley 51 and the reaper portion second input pulley 52, and a torque limiter 56 disposed on one side of the first transmission shaft 81. A power transmission first gear 85 as a gear for transmitting power from the first transmission shaft 81 to the reaping first shaft 53 via the torque limiter 56, a power transmission second gear 86, and a gear case 80 for housing these. And have.

The torque limiter 56 has an outer case 87, an inner plate 88, an outer plate 89, a torque plate 90, and a torque spring 91. The outer case 87 is disposed with the direction parallel to the longitudinal direction of the first transmission shaft 81 (horizontal direction with respect to the traveling direction of the vehicle) as the longitudinal direction, and a plurality of elongated holes 87 a are provided in the longitudinal direction. Inside the outer case 87, an inner plate 88, an outer plate 89, a torque plate 90, and a torque spring 91 are provided. The torque nut 92 provided at one end of the torque limiter 56 is tightened to adjust the elastic force of the torque spring 91. The inner plate 88 is fixed to the first transmission shaft 81, and the outer plate 89 is provided with a plurality of projections fitted to the long holes 87a of the outer case 87 on the outer periphery. The torque plate 90 is held between the inner plate 88 and the outer plate 89, and rotatably supports a plurality of torque rollers (not shown). The force pressing the inner plate 88 and the outer plate 89 can be adjusted by the torque spring 91.

Thus, normally, the force pressing the inner plate 88 and the outer plate 89 with each other by the torque spring 91 is a frictional force. Therefore, when the first transmission shaft 81 rotates, the inner plate 88 and the outer plate 89 integrally rotate. As a result, the projection 89a of the outer plate 89 and the long hole 87a of the outer case 87 mesh with each other to rotate the outer case. Thus, power is transmitted from the first transmission shaft 81 to the outer case 87. When an excessive load is applied to the first transmission shaft 81 side, the torque is superior to the force pressing the inner plate 88 and the outer plate 89, so the inner plate 88 is the outer plate 89 via the torque plate 90. In this case, power is not transmitted from the first transmission shaft 81 to the outer case 87.

A seal member 93 is provided on the outer side of the outer case 87. The seal member 93 is a member for sealing by separating the torque limiter 56 side of the gear case 80 and the power transmission first gear 85 side. Lubricating oil is filled in a space on the torque limiter 56 side of the gear case 80 separated by the seal member 93 (a space surrounded by a two-dot chain line in FIG. 6). By this configuration, the torque limiter 56 is always immersed in the lubricating oil, and stable power transmission can be performed.

An outer case gear 94 is provided on one side of the outer periphery of the outer case 87, and the outer case gear 94 is meshed with a power transmission first gear 85 fixed on the second transmission shaft 95. The second transmission shaft 95 is rotatably supported by the gear case 80, and a power transmission second gear 86 is fixed to the other end of the second transmission shaft 95. A part (front side) of the power transmission second gear 86 is exposed from the gear case 80 and is meshed with a reaper input gear 96 provided at one end of the first reaper shaft 53.
In such a configuration, the power transmitted to the first transmission shaft 81 is transmitted from the torque limiter 56 and the outer case gear 94 to the power transmission first gear 85, and the power transmission first gear 85 to the second transmission. Power is transmitted to a reaper input gear 96 provided at one end of the first reaper shaft 53 via a shaft 95 and a power transmission second gear 86.

When the reaper 3 is horizontally rotated in the direction of the arrow X in FIG. 5 about the vertical support shaft 20, for example, when maintaining the reaper 3, the gear engagement between the power transmission second gear 86 and the reaper input gear 96 Is released and separated. As a result, the reaper input gear 96 and the first reaper shaft 53 rotate in the horizontal direction together with the reaper 3, and the first power transmission gear 85, the second power transmission gear 86, the second transmission shaft 95, the torque limiter 56, One transmission shaft 81, the reaper portion first input pulley 51 and the reaper portion second input pulley 52 remain on the traveling machine body 1 side.
Since the reaper portion first input pulley 51 and the reaper portion second input pulley 52 remain on the traveling machine body 1 side, there is no need to remove the belt when the reaper portion 3 is horizontally rotated.

As described above, the combine 100 transmits the power from the engine 9 with the transmission 41 and transmits the power after the shift to the first shaft 53 of the reaper 3 via the torque adjustment mechanism 54. The reaper 3 is The second power transmission gear 86 and the reaper input gear 96 are provided on the output side of the torque adjustment mechanism 54 and the other side of the first reaper shaft 53 for meshing, thereby enabling the reaper to be released. When the portion 3 is opened, the power transmission second gear 86 of the torque adjustment mechanism 54 and the reaping input gear 96 of the reaping first shaft 53 are separated.
By this configuration, when the reaper 3 is opened, the removal of the belt is not necessary, and the working efficiency is improved.

In addition, the torque adjustment mechanism 54 is provided on one end side of the first cutting shaft 53.
By configuring in this manner, the number of parts can be reduced because a counter case is not used. Further, by providing the torque adjustment mechanism 54 in the vicinity of the first cutting shaft 53, the space for arranging the first cutting shaft 53 and the torque adjustment mechanism 54 can be summarized.

In addition, on the input side of the torque adjustment mechanism 54, a reaper portion first input pulley 51 as a power transmission member from the traveling portion 2 and a reaper portion second input pulley 52 as a power transmission member from the threshing portion are disposed. It is
With this configuration, when the clutch of the traveling unit 2 is in the off state and the tension clutch 45 of the threshing unit 4 is in the on state, the reaper 3 can be driven. Sometimes the grain clogged in the reaper 3 can be removed.

Next, a combine according to a second embodiment of the present invention will be described. In addition, about the member to which the same number as the combine according to the first embodiment is given, since the configuration is the same as the first embodiment, the description will be omitted.

In order to facilitate maintenance of the devices, the engine, the transmission case, etc. therein, the reaper 3 is horizontally rotated about a vertical support shaft 20 erected on one side of the front of the traveling body 1. It is configured to be possible (opening and closing is possible). The vertical support shaft 20 is provided on the rotation fulcrum frame 1 a as shown in FIG. 9.

The power transmission mechanism of the reaper 3 will be described with reference to FIGS. 7, 8 and 9.
The power from the engine 9 is transmitted to the transmission 41 of the traveling unit 2 and is transmitted to the PTO shaft 40 projecting from the output side of the transmission 41. A traveling portion output pulley 42 is provided at one end of the PTO shaft 40, and power is transmitted from the traveling portion output pulley 42 to the reaper portion first input pulley 51. A belt is wound between the traveling portion output pulley 42 and the reaper portion first input pulley 51.

The reaper portion first input pulley 51 is connected to the first transmission shaft 81, and a torque limiter 156 is provided at the other end of the first transmission shaft 81. A torque limiter side gear 194 is provided on the outer peripheral portion of the torque limiter 156, and the torque limiter side gear 194 is provided with a reaper first shaft side gear 196 provided at one end of the reaper first shaft 53 via an intermediate gear 195. It is connected. By this configuration, the power transmitted from the first transmission shaft 81 is the first cutting shaft through the torque limiter 156, the torque limiter side gear 194, the intermediate gear 195, and the first cutting shaft side gear 196. It is transmitted to 53.

Further, as shown in FIG. 10, the first harvesting shaft 53 is disposed such that the axial direction is in the left-right direction with respect to the advancing direction, and one end of the first harvesting shaft 53 is the first harvesting shaft. A side gear 196 is provided. As shown in FIG. 8, an engine 9 is disposed in the inboard direction of the reaper first shaft 53.
A bevel gear is fixed to the other end of the first cutting shaft 53, and power is transmitted to the upper conveying shaft 55 via the bevel gear. The upper transport shaft 55 is a shaft for transmitting power to the upper transport device 32.
Further, a bevel gear is fixed at a midway portion of the first cutting shaft 53, and power is transmitted to the second cutting shaft 57 through the bevel gear.

A bevel gear is fixed to the other end of the fifth cutting shaft 70, and power is transmitted to the sixth cutting shaft 71 via the bevel gear.
Then, the chains of the plurality of raising cases 23 are driven from the reaper sixth shaft 71 via the raising

shafts

72, 72, 72 to drive the raising tines 24.

Next, the gear case 173, the torque limiter case 174, and the support member 175 will be described with reference to FIGS.
The gear case 173 is a case for storing the torque limiter side gear 194 and the intermediate gear 195, and is disposed outside the body of the first transmission shaft 81 and substantially at the center in the left-right direction of the body.
Further, as shown in FIG. 12, a gear case body 173a whose one surface is opened is provided on the side surface of the gear case 173 on the side of the first transmission shaft 81, and one surface is opened on the other side surface of the gear case 173. A torque limiter case body 173b is provided. A gear case cover 177 is configured to be attachable to an open surface of the gear case body 173a. By fixing the gear case cover 177 to the gear case body 173a, a space for storing the torque limiter side gear 194 and the intermediate gear 195 is formed.

Further, a torque limiter case 174 described later is configured to be attachable to the torque limiter case body 173b. Thus, the gear case 173 and the torque limiter case 174 are integrally provided. As shown in FIG. 9, it is fixed to the upper end portion of the rotation fulcrum frame 1 a fixed to the upper part of the traveling machine body 1.

Further, the torque limiter side gear 194 and the intermediate gear 195 are stored in series in the front-rear direction in the gear case body 173a. With such a configuration, the lateral width of the gear case 173 can be narrowed, so that a space can be secured.
The front wall of the gear case body 173a (the wall on the intermediate gear 195 side) is not provided, and the reaper first shaft side gear 196 of the reaper first shaft 53 and the middle are removed when the reaper 3 is normal, ie not open. Gears 195 mesh with each other.

At the front of the gear case 173, a support member 175 is provided to make the reaping first shaft 53 detachable.
The support member 175 is pivotally supported on the gear case 173 by a pivot shaft 175a, and is configured to be pivotable in the front-rear direction. Further, by connecting a fixing member 175b to the front end of the support member 175 and the front end of the gear case 173 which contacts the upper end of the support member 175 when the support member 175 is turned to the gear case 173 side, the support member 175 and the gear case 173 are It is possible to fix. The fixing member 175 b is configured by a bolt.

When the reaper 3 is in the normal state, that is, when it is not in the open state, as shown in FIG. 14, by rotating the support member 175 toward the gear case 173 to communicate the fixing member 175 b, the reaper first shaft 53 is made to the gear case 173. Fix and support.

Further, at the time of maintenance, that is, when the reaper 3 is opened, as shown in FIG. 15, the fixing member 175b is removed and the support member 175 is pivoted to the front side about the pivot shaft 175a. The first harvesting shaft 53 is separated from the gear case 173 in the arrow direction.

The torque limiter case 174 is a case for storing the torque limiter 156 provided at one end of the first transmission shaft 81, and is a side of the gear case 173 and opposite to the side on which the first transmission shaft 81 is disposed. It is provided on the side. The torque limiter case 174 has an open side at the gear case 173 side. By fixing the torque limiter case 174 to the torque limiter case body 173b, a space for storing the torque limiter 156 is formed. Thus, the torque limiter case 174 and the gear case 173 are integrally provided.

Next, the torque limiter 156 will be described using FIGS. 16 to 18.
The torque limiter 156 is a mechanism for stopping power transmission when a load equal to or greater than a predetermined load is applied, and is provided at one end of the first transmission shaft 81. The first transmission shaft 81 is inserted into the gear case cover 177, the gear case 173 and the torque limiter case 174 from the middle part, and the torque limiter 156 is stored in the torque limiter case 174.

A flat gear type torque limiter side gear 194 is rotatably supported via a bearing bearing 205 at an end of a first transmission shaft 81 inserted inside the torque limiter case 174.

The torque limiter 156 has an outer case 187, a receiving plate 201, a pressing plate 202, an inner plate 188, an outer plate 189, a torque plate 190, and a torque spring 191, as shown in FIG. The outer case 187 is disposed with the direction parallel to the longitudinal direction of the first transmission shaft 81 (horizontal direction with respect to the traveling direction of the vehicle) as the longitudinal direction, and a plurality of elongated holes 187a are provided in the longitudinal direction. Inside the outer case 187, a receiving plate 201, a pressing plate 202, an inner plate 188, an outer plate 189, a torque plate 190, and a torque spring 191 are provided. The receiving plate 201 is provided inside the outer case 187, and the pressing plate 202 is disposed to face the receiving plate 201 on the first transmission shaft 81, and the receiving plate 201 and the pressing plate 202 The inner plate 188, the outer plate 189, and the torque plate 190 are disposed between them. The torque nut 192 provided at one end of the torque limiter 156 is tightened so that the elastic force of the torque spring 191 can be adjusted. The inner plate 188 is fixed to the first transmission shaft 81, and the outer plate 189 is provided at its outer periphery with a plurality of protrusions fitted in the long holes 187a of the outer case 187. The torque plate 190 is held between the inner plate 188 and the outer plate 189, and rotatably supports the plurality of torque rollers 190a. The force pressing the inner plate 188 and the outer plate 189 can be adjusted by the torque spring 191.

Thus, normally, the force pressing the inner plate 188 and the outer plate 189 by the torque spring 191 is a frictional force. Therefore, when the first transmission shaft 81 rotates, the inner plate 188 and the outer plate 189 integrally rotate. Then, the projection 189a of the outer plate 189 and the long hole 187a of the outer case 187 engage with each other, and the outer case 187 rotates. Thus, power is transmitted from the first transmission shaft 81 to the outer case 187. When an excessive load is applied to the first transmission shaft 81 side, the torque is superior to the force pressing the inner plate 188 and the outer plate 189, so the inner plate 188 is attached to the outer plate 189 via the torque plate 190. In this case, power is not transmitted from the first transmission shaft 81 to the outer case 187.

Further, an L-shaped oil hole 203 is formed in the axial core portion of the first transmission shaft 81, and one end side of the oil hole 203 is opened inside the torque limiter case 174. The other end side of the oil hole 203 is open to the circumferential surface of the first transmission shaft 81. As a result, the lubricating oil is moved from the oil hole 203 toward the torque roller 190a by the centrifugal force generated by the rotation of the first transmission shaft 81, and the oil is forcibly fed to the torque roller 190a by the centrifugal force for forced lubrication.

Further, as shown in FIG. 18, the torque roller 190a is formed in a cylindrical shape, and the torque plate 190 is formed with a rectangular support hole 190b similar in plan view. Thus, the torque roller 190a is rotatably inserted into the support hole 190b. Further, a pair of tongue pieces 190c are provided opposite to the opening edge on the opposing long side of the support hole 190b, and the tongue piece 190c is brought into contact with the outer periphery of the torque roller 190a.

Further, as shown in FIG. 20, the axial center line of the torque roller 190a is inclined toward the lower side of the rotation of the torque plate 190 at a constant inclination angle with respect to the radiation passing through the rotation center of the torque plate 190. The torque roller 190 a rotates while being in contact with the inner plate 188 and the outer plate 189, and the torque plate 190 also rotates. At this time, each torque roller 190 a moves while being restricted by the torque plate 190 so as to roll in a direction inclined by a certain angle with respect to the rotation orbit of the outer plate 189, the pressure of the one torque spring 191 Frictional resistance proportional to is generated.

Further, as shown in FIG. 11, a lubricating oil storage portion 174 a is provided below the torque limiter case 174. The lubricating oil storage portion 174a is a place where the lubricating oil filled in the space on the torque limiter case 174 side is stored. Since the temperature of the lubricating oil storage portion 174a is lower than the space where the torque limiter 156 is disposed, the lubricating oil stored in the lubricating oil storage portion 174a is cooled. Further, since the lubricating oil storage portion 174a is disposed on the downstream side of the cooling air sent by the cooling fan 17 of the engine 9, the cooling air tends to hit.

In addition, as shown in FIG. 19, it is possible to form a gap S between the receiving plate 201 and the inner plate 188 facing the pressing plate 202, and by configuring in this way, torque from the outer plate 188 outer peripheral side The pressing force of the nut 192 directly acts on the torque roller 190a, so that the torque roller 190a can be maintained stable by eliminating the opening of the torque roller 190a.

Further, as shown in FIG. 7, the first transmission shaft 81 is provided with a first rotation detection means as a first rotation detection means for detecting the amount of rotation of the first transmission shaft 81 located on the power transmission upstream side of the torque limiter 156. A sensor 81a is provided, and a second rotation sensor as a second rotation detecting means for detecting the amount of rotation of the first cutting shaft 53 located on the downstream side of the torque limiter 156 on the power transmission downstream of the first cutting shaft 53 53a is provided.

Each of the first rotation sensor 81a and the second rotation sensor 53a is an optical sensor, and detects the amount of rotation of the first transmission shaft 81 and the first cutting shaft 53. The first rotation sensor 81a and the second rotation sensor 53a may be configured by physical sensors.
The first rotation sensor 81a and the second rotation sensor 53a are connected to the control device 197, and from the detection information of the first rotation sensor 81a and the second rotation sensor 53a, the control device 197 is in an overload state or not. It can be judged.

With such a configuration, it is detected whether an overload state is present or not from the difference between the detection amount detected by the first rotation sensor 81a and the detection amount detected by the second rotation sensor 53a, and the overload state is detected. In the case of (1), it is possible to notify the worker by a not-shown notification means or the like.

A torque limiter gear 194 is provided on the outer periphery of the outer case 187 and on the gear case 173 side, and is engaged with the reaping first shaft gear 196 via the torque limiter gear 194 and the intermediate gear 195. There is.
In such a configuration, the power transmitted to the first transmission shaft 81 is the first shaft side of the reaper provided at one end of the first reaper shaft 53 via the torque limiter 156 and the torque limiter side gear 194 via the intermediate gear 195. Power is transmitted to the gear 196.

When the reaper 3 is horizontally rotated about the vertical support shaft 20 in the direction of the arrow in FIG. 15 for maintenance of the reaper 3, etc., the meshing between the first shaft gear 196 and the intermediate gear 195 is performed. It is released and separated. As a result, the reaping first shaft side gear 196 and the reaping first shaft 53 rotate in the horizontal direction together with the reaping unit 3, and the torque limiter 156, the first transmission shaft 81, the torque limiter side gear 194 and the intermediate gear 195 Remain on 1 side.
Since the reaper portion first input pulley 51 remains on the traveling machine body 1 side, there is no need to remove the belt when the reaper portion 3 is turned horizontally.

In the present embodiment, the second rotation sensor 53a is provided on the first cutting shaft 53. However, the present invention is not limited to this. The second rotation sensor 53a may be provided downstream of the torque limiter 156 in power transmission. Good.

As mentioned above, it is the combine 100 provided with the power transmission mechanism which transmits the power from the engine 9 to the reaper 3, and the power transmission mechanism includes the first transmission shaft 81 and the torque from the first transmission shaft 81 as torque. The overload between the first transmission shaft 81 and the first shaft 53 and the first shaft 53 and the first shaft 53 transmitted to the reaper 3 via the limiter side gear 194, the intermediate gear 195 and the first shaft side gear 196 A torque limiter 156 is provided to protect the power transmission mechanism at a time, and the reaper 3 can be opened horizontally by rotating horizontally in the horizontal direction to support the reaper first shaft 53 which rotates with the reaper 3 at the time of operation A support member 175, a gear case 173 for storing the torque limiter side gear 194 and the intermediate gear 195, and a torque limiter case 174 for storing the torque limiter 156 are integrally provided.
With such a configuration, the support member 175, the gear case 173, and the torque limiter case 174 can be made compact, so that space saving can be achieved.

Further, the lubricating oil storage portion 174 a is provided at the lower portion of the torque limiter case 174.
With this configuration, the lubricating oil is stored in the lubricating oil storage portion 174a having a relatively low temperature in the torque limiter case 174, so that the lubricating oil is efficiently cooled.

A first rotation sensor 81a for detecting rotation on the power transmission upstream side of the torque limiter 156, and a second rotation sensor 53a for detecting rotation on the power transmission downstream side of the torque limiter 156 are provided. It is.
With this configuration, it is possible to detect whether the vehicle is in the overload state from the difference between the detection amount detected by the first rotation sensor 81a and the detection amount detected by the second rotation sensor 53a.

Further, as described above, the power transmission mechanism for transmitting the power from the engine 9 from the PTO shaft 40 to the reaper 3 is provided, and the power transmission mechanism includes the first transmission shaft 81 connected to the PTO shaft 40; A harvester first shaft 53 for transmitting the power from the first transmission shaft 81 to the reaper 3 via the torque limiter side gear 194, the intermediate gear 195, and the first reaper shaft side gear 196, and is a PTO. A torque limiter 156 is provided between the shaft 40 and the first shaft 53 for protecting the power transmission mechanism at the time of overload.
By this configuration, the power transmission mechanism can be protected at the time of overload. Rather than providing multiple torque limiters downstream of the transmission of power, it can be configured with a simpler structure.

Further, the torque limiter side gear 194 and the intermediate gear 195 are stored in the gear case 173, and the torque limiter 156 is provided on the side opposite to the gear case 173 and opposite to the reaper portion first input pulley 51 side. It is
With this configuration, a space can be secured on the first input pulley 51 side of the reaper.

Further, the torque limiter side gear 194 and the intermediate gear 195 in the gear case 173 are arranged in a line.
With such a configuration, the lateral width of the gear case 173 can be narrowed, so that a space can be secured.

The present invention can be used in the combine technology, and in particular, can be used in the combine technology that transmits the power from the engine to the reaper via the torque limiter.

DESCRIPTION OF SYMBOLS 2 traveling part 3 reaping part 4 threshing part 41 transmission 45 tension clutch 53 reaping 1st shaft (reaping input axis)
53a Second rotation sensor (second rotation detection means)
56 torque limiter 81 first transmission shaft 81a first rotation sensor (first rotation detection means)
86 Power Transmission Second Gear 96 Harvesting Input Gear 100 Combine 173 Gear Case 174 Torque Limiter Case 174a Lubricating Oil Storage Section 175 Support Member 194 Torque Limiter Gear 195 Intermediate Gear 196 Reaping First Shaft Gear

Claims

It is a combine that shifts the power from the engine by the transmission and transmits the power after the shift to the reaper input shaft of the reaper via a torque limiter,
The reaper can be opened horizontally by rotating horizontally,
Gears are provided on the output side of the torque limiter and on the other side of the cutting input shaft for meshing, and when the cutting unit is opened, the gear of the torque limiter and the gear of the cutting input shaft are separated.
The combine according to claim 1, wherein the torque limiter is provided on one end side of the reaper input shaft.
The power transmission member from a traveling part and the power transmission member from a threshing part are arrange | positioned at the input side of the said torque limiter, The combine according to Claim 1 or 2 characterized by the above-mentioned.
A combine having a power transmission mechanism for transmitting power from an engine to a reaper,
The power transmission mechanism includes a first transmission shaft, a reaping first shaft for transmitting power from the first transmission shaft to the reaper via a plurality of gears, the first transmission shaft, and the reaping first shaft. And a torque limiter to protect the power transmission mechanism during overload.
The reaper can be turned horizontally and horizontally to be openable,
A supporting member for supporting the reaper first shaft, which rotates together with the reaper, at the time of work; a gear case for storing the plurality of gears; and a torque limiter case for storing the torque limiter.
Combine that is characterized by.
A lubricating oil storage portion is provided at the lower portion of the torque limiter case,
The combine according to claim 4 characterized by things.
A first rotation detection means for detecting a rotation on the power transmission upstream side of the torque limiter, and a second rotation detection means for detecting a rotation on the power transmission downstream side of the torque limiter are provided.
The combine according to claim 4 or 5 characterized by things.
The power transmission mechanism includes a power transmission mechanism for transmitting power from the engine from the PTO shaft to the reaper, the power transmission mechanism including a first transmission shaft connected to the PTO shaft, and a plurality of gears from the first transmission shaft. A reaping first shaft to be transmitted to the reaping portion via
A torque limiter is provided between the PTO shaft and the first cutting shaft for protecting the power transmission mechanism at the time of overload.
Combine that is characterized by.
The plurality of gears are stored in a gear case,
The torque limiter is provided on the side of the gear case and on the side opposite to the input pulley side.
The combine according to claim 7, characterized in that.
The plurality of gears in the gear case are arranged in a row,
The combine according to claim 8, characterized in that.