JP2017051166A - Harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester that enables assembly work and maintenance work related to a reaping transmission shaft without troublesomeness.SOLUTION: A harvester is provided with a reaping transmission shaft 37 extended along a machine body width direction over a relay transmission mechanism positioned in one side in the machine body width direction of a feeder and a reaping transmission mechanism positioned in one side in the machine body width direction of a reaping processing unit. The reaping transmission shaft 37 is rotatably supported to support stays 128, 129 fixed to the rear part 19 of the reaping processing unit through bearings 126, 127 in each of one side place and the other side place of the extension direction, bearing holders 130, 131 for holding the bearings 126, 127 are provided in each of one side place of the extension direction and the other side place, and the bearing holders 130, 131 are detachably supported to the support stays 128, 129.SELECTED DRAWING: Figure 12

Description

  The present invention includes, for example, a harvesting processing unit that harvests crops such as rice, wheat, soybeans, and corn, and then laterally feeds and merges the crops toward an intermediate portion in the width direction of the aircraft, and the crop that is laterally fed by the harvesting processing unit The present invention relates to a harvesting machine provided with a feeder that conveys the rear of the machine toward the rear of the machine body.

  In the harvesting machine, the harvesting processing unit includes, for example, a cutting blade for harvesting crops, an auger for gathering harvested crops, and the like, and a feeder for transmitting power from the traveling machine body to each part of the harvesting processing unit. Is provided with a relay transmission mechanism that transmits power from the traveling machine body using, for example, a transmission chain, on one side in the lateral direction of the machine body, and the cutting transmission shaft that is located on the rear side of the back part of the cutting processing unit from the relay transmission mechanism In this configuration, power is transmitted to the cutting processing unit (see, for example, Patent Document 1).

  Although not described in detail in Patent Document 1, conventionally, the cutting transmission shaft is rotatably supported via a bearing by a pair of left and right support stays provided in a fixed state on the back surface of the cutting processing unit. Therefore, the bearing is fitted into the support stay. In this configuration, since the bearing is fitted and attached to the support stay, it is necessary to support the bearing in a tightly fitting state so that the bearing does not loosen. The gap is a slightly loose fit.

JP 2014-33670 A

  In the above-described conventional configuration, when the mowing transmission shaft is mounted on the rear portion of the mowing processing portion, the left and right bearings are mounted on the support stay in a state of being fitted around the mowing transmission shaft. At this time, it is necessary to adjust the positions of the left and right bearings externally fitted to the cutting transmission shaft with respect to the left and right support stays, respectively, and the adjustment work takes time and the assembling work is troublesome. It was. In particular, when the width of the cutting processing unit is increased, the cutting transmission shaft is lengthened, and the distance between the support stays on the left and right sides is increased, the adjustment work as described above becomes more troublesome.

  Not only when the mowing drive shaft is assembled, but also when it is necessary to repair or replace the bearing due to long-term use of the harvester, the bearing alone cannot be removed, and the mowing drive shaft is also removed. There is a disadvantage that it is necessary, and it takes time and effort to remove the bearing, which makes the maintenance work troublesome.

  Therefore, it has been desired to be able to perform assembly work and maintenance work related to the cutting transmission shaft without any trouble.

The characteristic configuration of the harvester according to the present invention is:
A mowing processing unit that cuts the crop and then feeds it to the middle part in the lateral direction of the machine body and joins it, a feeder that transports the crop that is fed laterally by the mowing process unit toward the rear of the machine body, and the machine body of the feeder A relay transmission mechanism that is located on one side in the lateral width direction and that transmits power from the traveling machine body side, and a cutting that is located on one side in the machine body lateral direction of the mowing processing part and transmits the power to each part of the mowing processing part A cutting transmission shaft, which is located on the rear side of the rear portion of the transmission mechanism and the cutting processing section and extends along the lateral width direction of the fuselage in a state extending over the lower transmission side of the relay transmission mechanism and the upper transmission side of the cutting transmission mechanism And
The cutting transmission shaft is rotatably supported by a support stay fixed to the back surface portion of the cutting processing unit via a bearing at each of one side portion and the other side portion in the extending direction,
A bearing holder for holding the bearing is provided at each of one side and the other side in the extending direction, and the bearing holder is detachably supported by the support stay.

  According to the present invention, the cutting transmission shaft is located on the rear side of the back portion of the cutting processing unit and extends along the lateral width direction of the body, and in each of the one side portion and the other side portion in the extending direction, It is rotatably supported by a support stay via a bearing. The bearing that rotatably supports the cutting transmission shaft is held by the bearing holder, and the bearing holder is detachably supported by the support stay.

  When assembling the mowing drive shaft to the rear part of the mowing processing section, attach a pair of bearings to the mowing drive shaft in advance and hold the bearing with the bearing holder. Will be attached. At that time, for either one of the pair of bearings, the bearing holder holding the bearing is attached to the corresponding support stay, so that the cutting shaft is positioned, and then the other bearing is mounted. By attaching the holding bearing holder to the corresponding support stay, the assembly work can be done without trouble.

  After the mowing drive shaft is assembled to the rear surface of the mowing processing section, for example, when performing maintenance work such as repair or replacement of the bearing, the bearing holder holding the target bearing is removed from the support stay, and the bearing By removing the shaft from the cutting shaft, the maintenance work of the bearing can be performed easily.

  Therefore, it has become possible to perform assembly work and maintenance work related to the cutting drive shaft without any trouble.

In the present invention,
The bearing holder is located on the shaft end side with respect to the support stay in each of the one side portion and the other side portion in the extending direction,
It is preferable that the bearing holder at one side in the extending direction covers the bearing from the shaft end side.

  According to this configuration, since the bearing holder is located on the shaft end side with respect to the support stay, when performing maintenance work, the bearing holder can be removed toward the shaft end side outward, and the cutting drive shaft Without removing the whole, the bearing holder and the bearing can be easily performed without trouble.

  Since the bearing holder on one side covers the bearing from the shaft end side, when assembling the cutting transmission shaft, the bearing holder on one side is supported by the corresponding support stay so that it is held by it. The position of the bearing on the one side in the axial direction is fixed, and the position of the bearing on the other side can be easily adjusted.

In the present invention,
In either one of the pair of support stays, an insertion hole is formed having a size that allows the other bearing holder to pass therethrough and cannot pass one bearing holder,
The other support stay is formed with a recessed portion opened radially outward,
Preferably, the recessed portion allows the cutting transmission shaft to enter the rotation support position along the radial direction in a state where the other bearing holder is mounted.

  According to this configuration, when assembling the cutting transmission shaft, the cutting transmission shaft is inserted with the pair of bearings and the pair of bearing holders holding the respective bearings, and the insertion formed on one of the support stays. Insert the cutting shaft from one side outside through the hole. At this time, since the other bearing holder can pass through the insertion hole, it can be passed through as it is.

  Then, in a state where the other bearing holder is positioned on the outer side of the other side of the support stay, the cutting power transmission shaft can enter the rotation support position along the radial direction through the recessed portion. In a state where the cutting power transmission shaft enters the rotation support position, the pair of bearing holders can be supported by the corresponding support stays, respectively.

  In other words, a pair of bearings and a pair of bearing holders are provided on the cutting transmission shaft, respectively, and can be attached to the pair of support stays in a state of being configured in advance, so that the assembling work can be performed with a high work efficiency.

  In the present invention, the input rotating body to which the power from the relay transmission mechanism is transmitted is fitted and supported on the feeder side outer end of the cutting transmission shaft rather than the feeder side bearing. It is preferable.

  According to this configuration, the input rotating body is fitted and supported at the outer end portion of the feeder side, that is, the shaft end portion, relative to the feeder-side bearing of the cutting transmission shaft. As a result, the input rotating body can be attached to or detached from the cutting transmission shaft without being affected by the bearing holder, the support stay, or the like. Therefore, it is possible to remove only the input rotator from the cutting transmission shaft while the bearing holder is supported by the support stay, and it is possible to mount the input rotator again.

  In the present invention, it is preferable that the bearing holder on the feeder side is formed in a side open type in which both side surfaces in the axial direction of the bearing are opened.

  According to this configuration, the bearing holder on the feeder side is supported by the support stay, and the input rotating body is supported by the outer end portion on the feeder side rather than the bearing holder on the feeder side. Since the bearing holder on the feeder side is open on both sides in the axial direction of the bearing, the input rotating body is moved as close as possible to the bearing holder, and the distance from which the cutting transmission shaft extends in a cantilevered manner from the support position by the bearing. For example, the bending stress of the cutting transmission shaft due to the tension of the endless rotating body stretched on the input rotating body can be reduced.

It is a whole side view of a combine. It is a whole top view of a combine. It is a partial side view of a cutting process part. It is a side view of the cutting processing part which shows a transmission structure. It is a front view of a spindle holding part. It is a vertical side view of a spindle holding part. It is a cross-sectional plan view of the right divider arrangement part. It is a vertical front view which shows a cutting blade drive structure. It is a top view of a part of cutting blade. FIG. 10 is a sectional view taken along line XX in FIG. 9. It is a front view which shows the support structure of a cutting drive shaft. It is a cross-sectional top view which shows the support structure of a cutting drive shaft. It is a vertical side view which shows the support structure of a cutting drive shaft. It is a vertical side view which shows the support structure of a cutting drive shaft. It is a front view which shows a rotation reel. It is a vertical side view of a tine support part. It is a front view which shows a rotation reel. It is a vertical side view of a tine support part. It is a perspective view of a cover.

Hereinafter, an embodiment of a normal combine as an example of a harvester according to the present invention will be described with reference to the drawings.
〔overall structure〕
1 and 2 show ordinary combine harvesters for harvesting crops such as rice and wheat. This combine harvester conveys the planted cereal as a crop to be harvested to the front of a traveling machine equipped with a pair of left and right crawler traveling devices 2 at the lower part of the machine frame 1 and conveys it backwards. Are connected so as to be swingable up and down. Then, the traveling machine body handles the harvested cereal rice cake as a crop conveyed from the harvesting and conveying unit 3 on the machine body frame 1, and converts the threshing processed product obtained by the handling process into a grain and a discharge. The threshing device 4 for sorting, the grain tank 5 for storing the grains obtained by the threshing device 4, the grain discharging device 6 for discharging the grains stored in the grain tank 5 to the outside of the machine, the operator Is equipped with a driving unit 7 and the like for performing a driving operation. This combine is configured as a full-pile-feeding type in which the planted cereal culm is cut and harvested, and all the harvested cereal culm is put into the threshing device 4.

  The operation part 7 is located on the right side of the front part of the machine body, and the grain tank 5 is located behind the operation part 7. Further, the threshing device 4 and the grain tank 5 are arranged in the left-right direction with the threshing device 4 located on the left side and the grain tank 5 located on the right side. A driving engine 8 is provided below the operation unit 7.

  In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the left-right direction of the aircraft, the left-right direction is defined as viewed in the aircraft advancing direction. . That is, the direction indicated by the reference symbol (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by the reference symbol (B) in FIGS. The direction indicated by reference sign (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference sign (R) in FIG. Therefore, the left-right direction of the body corresponds to the lateral direction of the body.

  The cutting and conveying unit 3 cuts the planted cereal rice cake to be harvested with the traveling of the vehicle body, and the harvested rice cake harvested by the harvesting processing unit 9 to the threshing device 4 on the rear side of the machine body. The hydraulic cylinder 11 for lifting and lowering the cutting frame is provided so as to be swingable up and down around the horizontal axis P1.

  The harvesting processing unit 9 is supported by a frame support 17 configured by connecting a square pipe, an angle member having an L-shaped cross section, and the like. A pair of left and right dividers 13 for weeding, a rotating reel 14 for scraping the planted culm to be harvested backward, and a clipper-shaped mowing that cuts and harvests the planted side of the planted culm to be harvested A blade 15 and an auger 16 that laterally feeds the cut cereal grains after cutting to the middle side in the left-right direction and collects them and sends them to the rear are provided.

  As shown in FIG. 2, the left and right width (cutting width) of the cutting processing unit 9 is larger than the distance between the lateral outer ends of the left and right crawler travel devices 2, in other words, the width of the traveling machine body. The step allowance of the left and right crawler travel devices 2 formed on the cut marks of the planted crop by the processing unit 9 is ensured greatly in the left-right direction. This reduces the risk of trampling unharvested crops by the crawler travel device 2 during harvesting operations.

  As described above, the right and left width of the cutting unit 9 is larger than the lateral width of the traveling aircraft, but the operating unit 7 is located on the right side of the front of the aircraft and the feeder 10 is located on the left side of the front of the aircraft. The part 9 is connected to the feeder 10 in a state of being biased to one side (right side) in the body width direction with respect to the feeder 10.

  As shown in FIG. 3, the cutting processing unit 9 includes a frame support 17 configured by connecting a square pipe, an angle member having an L-shaped cross section, and the like, and a vertically oriented back located on the rear side of the auger 16. A face plate 19 and a pair of side wall portions 20 and the like located at both end portions in the body width direction are provided. The left and right dividers 13 are provided on the front side of the left and right side walls 20 of the cutting frame 12. A portion of the back plate 19 to which the feeder 10 is connected is opened so that an inlet 21 (see FIG. 2) of the feeder 10 communicates, and the harvested crop can be conveyed from the auger 16.

[Rotating reel]
The rotating reel 14 will be described.
As shown in FIGS. 1, 2, and 15, the rotary reel 14 is provided in a state of being supported by a pair of left and right support arms 22 extending forward from the upper part of the rear end side of the cutting frame 12. ing. In other words, a reel frame 24 is provided at the left and right end portions of the drive shaft 23 rotatably supported at the distal end portions of the pair of support arms 22 so as to be integrally rotatable. Each of the pair of left and right reel frames 24 has a substantially hexagonal shape in a side view. A tine support member 25 is provided in a state of being laid over the pair of left and right reel frames 24 and being positioned one by one at the top of the six, and each tine support member 25 is provided along the longitudinal direction thereof. A plurality of tines 26 (scratching claws) are attached in a state where they are arranged side by side.

  As shown in FIG. 16, the tine 26 is formed by bending a round bar-shaped metal spring material. The tine 26 is attached to and supported by the tine support member 25 and is supported in a U-shape. An obliquely extending portion 26B extending obliquely forward and downward from the portion 26A, and an obliquely extending portion 26C extending backward and extending from the obliquely extending portion 26B are provided. In the midway portion of the obliquely extending portion 26B, a string-wound spring portion 26D wound twice is provided below the support portion 26A.

  The tine 26 is fixed by tightening a bolt into the tine support member 25. As shown in FIG. 15, each tine support member 25 is provided with a cover 101 that covers the support portion 26 </ b> A and the spring portion 26 </ b> D of the tine 26 for each tine 26. The cover 101 has a split structure on both right and left sides, and is configured to connect the divided cover bodies 102 and 103 on both left and right sides to cover the support portion 26A4 and the spring portion 26D.

  That is, as shown in FIG. 17, the first divided cover body 102 includes a latch holding portion 102 a that is hooked and held from one side with respect to the tine support member 25, and a substantially triangular side view that is continuous with the latch holding portion 102 a. And a cover 102b having a shape. The second divided cover body 103 includes a latch holding portion 103a that is hooked and held from the other side with respect to the tine support member 25, and a cover portion 103b that has a substantially triangular shape in side view and continues to the latch holding portion 103a. Yes. The first divided cover body 102 is formed with an engaging portion 102c that fits and engages with an engaged portion 103c formed on the second divided cover body 103 when both are connected. The engaging portion 102c and the engaged portion 103c are locked by elastic engagement in a connected state, and have a fitting structure that cannot be easily removed after fitting and locking. Such a structure may be referred to as hellfast.

  The reel frame 24 is provided with a posture holding mechanism for holding the posture so that the tine 26 extends downward from the tine support member 25 regardless of the rotation of the rotary reel 14. . This posture holding mechanism has a well-known structure, and the configuration thereof will not be described in detail. However, when the rotary reel 14 rotates, the tine 26 rotates while holding the downward posture to move the planted cereals backward. It is configured so that it can be scraped.

  A hydraulic cylinder 27 is connected to each of the pair of support arms 22 and the left and right side wall portions 20, and the pair of hydraulic cylinders 27 allows the pair of support arms 22 to be cut around the axis P <b> 2 on the rear base end side. The rotary reel 14 is supported so as to be movable up and down by swinging up and down.

  A reel fulcrum shaft 104 serving as a swing fulcrum of the pair of support arms 22 is located at the upper part on the rear end side of the cutting frame 12 and is formed to extend in the left-right direction over the base end portions of the left and right support arms 22. . As shown in FIG. 2, the reel fulcrum shaft 104 is rotatably supported by five support shaft holding portions 105 provided at intervals in the left-right direction in a state where lifting is prevented.

  As shown in FIGS. 5 and 6, a square pipe-shaped upper support body 17 </ b> A is provided that is positioned at the rear upper part of the cutting processing unit 9 and extends in the left-right direction of the machine body. Each support shaft holding portion 105 includes a receiving member 105A fixed to the upper surface side of the upper support 17A, a synthetic resin bush 105B fitted to the reel fulcrum shaft 104, and the reel fulcrum shaft 104 connected to the bush 105B. And a presser member 105C that is pressed from above. The pressing member 105C is formed in a band plate shape, and both sides are bolted to the receiving member 105A in a state where the reel fulcrum shaft 104 is pressed from above.

〔Ogre〕
The auger 16 will be described.
As shown in FIG. 2, the auger 16 is provided with a pair of left and right spiral blades 60 that perform a lateral feed function toward the front end portion of the feeder 10 with forward rotation on the outer periphery of a large-diameter cylindrical drum 59. It has been. A plurality of bar-like scraping bodies 61 that are withdrawn from and retracted from the drum 59 are provided in a region facing the inlet 21 at the front end of the feeder 10. A scraping body 61 that moves out of the drum 59 is also provided in the middle of the right lateral feed area and in the middle of the left lateral feed area. Although not described in detail, the plurality of scrapers 61 are supported inside the drum so that the drum 59 is slidably guided so as to be able to move out and retract as the drum 59 rotates. As will be described later, the power of the engine 8 is transmitted to the auger 16.

  Although not shown, the auger 16 rotates around the axis of an eccentric support shaft (not shown) different from the rotation axis of the drum 59 when each drum 59 rotates and the drum 59 rotates. At this time, the distance between the eccentric support shaft and the drum 59 changes depending on the rotation phase, and each of the scraping bodies 61 rotates while moving out and out of the drum 59, and the bottom plate 18 and the back plate 19. The crop is scraped into the feeder 10 while avoiding the interference.

〔feeder〕
As shown in FIG. 1, the feeder 10 includes a pair of endless left and right ends within a rectangular tube-shaped feed case 82 that extends across a driving wheel 83 located on the rear upper side and a driven wheel 84 located on the lower front. A rotating chain 85 is wound around and a locking conveyance body (not shown) is installed at predetermined pitches across a pair of left and right endless rotating chains 85. An inlet 21 communicating with the cutting processing unit 9 is formed at the front end of the feed case 82. A rear end portion of the feed case 82 is connected to the threshing device 4 in communication. Then, the endless rotating chain 85 is rotated to convey the harvested crop (cutted culm) delivered from the cutting processing unit 9 toward the threshing device 4.

[Mowing blade]
The cutting blade 15 will be described.
As shown in FIGS. 3 and 10, the cutting blade 15 includes an angle-shaped base 29 that is attached and fixed back to back on a connecting frame 28 that extends across the width of the machine body, and a receiver that is attached to the base 29. A blade 30, a movable blade 31 supported slidably with respect to the receiving blade 30, a knife bar 32 that drives the movable blade 31, and a knife that holds the movable blade 31 to prevent lifting while allowing sliding. And a clip 33.

  The power from the engine 8 is transmitted via a transmission mechanism as described later, and a long knife bar 32 over the entire cutting width is driven to reciprocate at a predetermined pitch. The knife bar 32 is connected and fixed by rivets. The movable blade 31 thus moved reciprocally moves and cuts and harvests the stock of the harvested cereal rice cake in cooperation with the receiving blade 30 in the fixed state.

  As shown in FIGS. 9 and 10, the movable blade 31 serves as a member for sending the harvested cereal to the intermediate portion in the lateral direction of the fuselage (delivery location to the feeder 10) with respect to the delivery location to the feeder 10. A right lateral feed member 34 located on the right side as viewed in the aircraft traveling direction and a left lateral feed member 35 located on the left side are provided.

  The lateral feed members 34 and 35 on both the left and right sides are long in the lateral direction of the machine body, and sawtooth-like lateral feed working parts 34A and 35A and connecting parts 34B and 35B are formed as a single plate-like body. . The connecting portions 34B and 35B are connected to the knife bar 32 by the bolt 100, and the both lateral feed members 34 and 35 are configured to reciprocate integrally with the knife bar 32 and the movable blade 31. When the connection of the bolt 110 to the knife bar is released, the both lateral feed members 34 and 35 can be removed from the cutting blade 15 as a whole.

[Transmission structure]
A transmission structure for the cutting processing unit 9 will be described.
As shown in FIG. 11 and FIG. 12, a cutting transmission shaft 37 is provided on the rear side of the back plate 19 so as to extend along the width direction of the fuselage. Then, as shown in FIG. 4, the power of the engine 8 is transmitted to a drive shaft 106 that supports a drive wheel body 83 located on the rear upper side of the feeder 10 via a transmission mechanism (not shown). The power is transmitted to the upper transmission side (left end portion) of the cutting transmission shaft 37 via the chain transmission mechanism 107 serving as a relay transmission mechanism located on the right side (one side in the body width direction) of the feeder 10.

  As shown in FIG. 4, the chain transmission mechanism 107 is provided on the outer side of the right side surface of the feed case 82, on the drive sprocket 108 provided on the drive shaft 106 of the feeder 10 and on the left end of the cutting transmission shaft 37. A driven sprocket 109 as an input rotating body and an endless rotating chain 110 wound around them are provided.

  The power transmitted to the mowing transmission shaft 37 is transmitted to the outer side (one side in the lateral direction of the machine body) of the right side wall 20 of the mowing processing section 9 (the mowing blade 15, the auger 16, the rotary reel 14). ) Is provided. Power is transmitted from the lower transmission side (right end) of the cutting transmission shaft 37 to the cutting transmission mechanism 111. The cutting transmission mechanism 111 includes a cutting blade transmission portion 112 for the cutting blade 15, an auger transmission portion 113 for the auger 16, and a reel transmission portion 114 for the rotary reel 14.

The cutting blade transmission unit 112 will be described.
As shown in FIGS. 3, 7, 8, and 11, the cutting blade transmission 112 is provided at the right end of the cutting transmission shaft 37 and rotates about the horizontal axis of the cutting transmission shaft 37. A power conversion mechanism 38 that converts power into power around the front and rear axis, a front and rear transmission shaft 39 that rotates by the converted power, and a front end portion of the front and rear transmission shaft 39 are provided. A swing arm 40 and a link 41 that interlocks and connects the swing arm 40 and the knife bar 32 are provided.

  The power conversion mechanism 38 is a well-known configuration, and thus a detailed configuration is not described, but the cutting transmission is performed so as to convert the rotational movement in one direction of the cutting transmission shaft 37 into the reciprocating rotational movement of the front-rear transmission shaft 39. The shaft 37 and the front-rear transmission shaft 39 are linked together.

  The swing arm 40 is connected to the front end of the front-rear transmission shaft 39 so as to rotate integrally. As shown in FIGS. 7 and 8, the swing arm 40 is rotatably connected to one end of the link 41 via the first bearing member 42. The other end of the link 41 is connected to the movable blade 31 via the second bearing member 43. When the front-rear transmission shaft 39 is reciprocally rotated, the swing arm 40 is swung left and right, and the movable blade 31 is reciprocated in the left-right direction.

  As shown in FIGS. 3, 7, and 11, a support portion 45 that protrudes from the right side wall portion 20 to the right outer side of the machine body is provided, and the insertion hole 46 formed in the support portion 45 is connected to the front-rear transmission shaft. 39 is inserted in the front-rear direction, and the front-rear transmission shaft 39 is rotatably supported by a bearing 48 housed in a bearing holder 47 attached to the front side of the support portion 45.

  A cutting blade guard 49 that protects the cutting blade 15 is provided on the outer side of the cutting blade 15 in the lateral direction of the machine body. The cutting blade guard 49 includes a band plate-like plate member 50 and a round bar member 51 fixed to the rear side of the plate member 50 by welding or the like. The round bar member 51 is a laterally U-shaped member having a front side opened in a side view. On the front side of the cutting blade guard 49, the front end portion of the plate member 50 is connected to the side wall portion 20 with a bolt. The rear side of the cutting blade guard 49 is bolted to the side surface of the support 45 via a bracket 52 connected to the round bar member 51.

The auger transmission unit 113 will be described.
As shown in FIG. 4, the auger transmission 113 is provided on the drive sprocket 115 provided at a position adjacent to the power conversion mechanism 38 at the right end of the cutting transmission shaft 37 and on the rotation shaft 66 of the auger 16. Further, the driven sprocket 116 and an endless rotating chain 117 wound around the driven sprocket 116 are provided, and the auger 16 is rotationally driven by power transmitted from the cutting transmission shaft 37.

The reel transmission unit 114 will be described.
As shown in FIG. 4, the reel transmission section 114 includes a drive sprocket 118 provided on the rotation shaft 66 of the auger 16, a fulcrum side sprocket 119 externally fitted to the reel fulcrum shaft 104, and An endless rotating chain 120 wound around them is provided. Furthermore, a drive pulley 121 provided so as to be rotatable integrally with the fulcrum side sprocket 119, a driven pulley 122 provided on the drive shaft 23 of the rotary reel 14, and a transmission belt 123 wound around them are provided. Then, the rotary reel 14 is rotationally driven by the power transmitted from the rotation shaft 66 of the auger 16 via the endless rotation chain 120 and the transmission belt 123. The endless rotating chain 120 and the transmission belt 123 are provided with tension ring bodies 124 and 125 that apply tension. By transmitting the power via the reel fulcrum shaft 104 in this way, the transmission state does not change even when the rotary fulcrum swings around the axis of the reel fulcrum shaft 104, and the power is transmitted well. Can do.

A support structure for the cutting transmission shaft 37 will be described.
As shown in FIG. 12, the cutting transmission shaft 37 is extended along the left-right direction of the machine body, and cutting is performed via bearings 126 and 127 at one side and the other side in the extending direction. It is rotatably supported by support stays 128 and 129 fixed to the back surface of the processing unit 9. In addition, bearing holders 130 and 131 holding the bearings 126 and 127 are provided at one side and the other side in the extending direction, and the bearing holders 130 and 131 are detachably supported by the support stays 128 and 129. Has been.

  As shown in FIGS. 12 and 14, a plurality of rectangular tube-shaped back supports 17 </ b> B that are located on the rear side of the back plate 19 and extend in the vertical direction are provided. The left side (input side) support stay 128 of the pair of support stays 128, 129 is fixed to the back support 17B located at the center of the left and right of the plurality of back supports 17B, and is directed toward the rear of the body. It is cantilevered.

  The left support stay 128 is formed in a substantially rectangular shape in a side view, and is formed with an insertion hole 132 penetrating in the left-right direction. In addition, the support strength is improved by bending the upper and lower sides into a substantially L shape and forming a substantially U shape when viewed from the front-rear direction of the machine body.

  As shown in FIGS. 12 and 13, the right support stay 129 is fixed to the back support 17B located on the rightmost side among the plurality of back supports 17B and extends in a cantilevered manner toward the rear of the machine body. Has been. The right support stay 129 is opened toward the radially outer side on the rear side of the fuselage, and the cutting transmission shaft 37 enters the rotational support position along the radial direction while the bearing holder 131 is mounted. The recessed part 133 which accept | permits is formed. The recessed portion 133 is cut out in a U shape, and the cutting transmission shaft 37 can enter the radial direction (the longitudinal direction of the machine body).

  As shown in FIG. 12, the bearing holder 131 that holds the right bearing 127 has a shape having a cover 131a that covers the bearing 127 from the shaft end side (right outer side). As shown in FIG. 13, the right bearing holder 131 is in a fixed state in which the flange 131 b is connected to the support stay 129 with a bolt while being applied to the support stay 129 from the right outer side of the right support stay 129. Supported.

  As shown in FIG. 12, the left bearing holder 130 is formed in a side-opening type in which both side surfaces in the axial direction of the bearing 126 are opened. The left bearing holder 130 is attached to the outer periphery of the bearing 126 in an interference fit state so as not to loosen. The left bearing holder 130 is supported in a fixed state by connecting the flange portion 130 a to the support stay 128 with a bolt while being applied to the support stay 128 from the left outer side of the left support stay 128. Therefore, the pair of bearing holders 130 and 131 are located on the shaft end side with respect to the support stays 128 and 129 at one side portion and the other side portion in the extending direction of the cutting transmission shaft 37. That is, the left bearing holder 130 is located on the left side of the left support stay 128, and the right bearing holder 131 is located on the right side of the right support stay 129.

  The insertion hole 132 formed in the left support stay 128 is formed in a shape that allows the right bearing holder 131 to pass therethrough but does not allow the left bearing holder 130 to pass through. That is, the right bearing holder 131 is smaller than the left bearing holder 130.

  With this configuration, the pair of bearings 126 and 127 and the pair of bearing holders 130 and 131 are respectively provided on the cutting transmission shaft 37 and assembled in a unit form in advance, and the left outer side of the left support stay 128 is left. The unit-like body is inserted through the insertion hole 132 and is inserted into the right support stay 129 from the recessed portion 133 in the front-rear direction, so that it can be attached to the pair of support stays 129, and the work efficiency is high. Can be assembled.

[Another embodiment]
(1) In the above-described embodiment, the bearing holders 130 and 131 are positioned on the shaft end side with respect to the support stays 128 and 129 in the left and right sides, respectively, and the right bearing holder 131 has the bearing 127 on the shaft end. The bearing holder 130 on the left side has a structure in which both side surfaces in the axial direction of the bearing 126 are opened. However, the present invention is not limited to this structure, and the following (1-1) to (1-3) As described above, various modifications may be made.
(1-1) The left bearing holder covers the bearing from the shaft end side, and the right bearing holder has a structure in which both side surfaces in the axial direction of the bearing are opened.
(1-2) In each of the left and right sides, the bearing holder has a structure in which both side surfaces in the axial direction of the bearing are opened.
(1-3) A bearing holder covers the bearing from the shaft end side on each of the left and right sides.

(2) In the above embodiment, the left support stay 128 is formed with an insertion hole 132 having a size that allows the right bearing holder 131 to pass therethrough and the left bearing holder 130 not to pass therethrough. Although the recessed portion 133 opened toward the outside in the direction is formed, it may be configured as follows instead of this configuration.
(2-1) The insertion hole 132 formed in the left support stay 128 has such a size that only the right bearing 127 attached to the cutting transmission shaft 37 can be inserted, and the right and left bearings 126, 127 and the left bearing holder 130 are mounted and mounted through the insertion hole. In this case, the right bearing holder 131 is attached from the right outer side of the right support stay 129.
(2-2) It is good also as a structure which forms an insertion hole in each of the left and right support stays 128 and 129, and mounts the cutting transmission shaft 37 to the left and right support stays 128 and 129 through the insertion holes. In this case, the support structure of the bearing holder can be variously changed as described in (1) above.

(3) In the above embodiment, the tine cover 101 of the rotary reel 14 individually covers the tine 26. However, instead of this configuration, the following configuration may be adopted.
As shown in FIGS. 18 and 19, all the tines 26 attached to the tine support member 25 may be covered with a long cover 140 that is continuously connected. The cover 140 is made of a soft and flexible sheet made of a resin such as polyvinyl chloride. The cover 140 is overlaid on the tine support member 25 and fastened and fixed by a resin binding band 141.

(4) In the above embodiment, what is applied to a general combine harvester that harvests rice, wheat, etc. has been shown, but the present invention can be applied to other types of harvesters such as corn harvesters.

  The present invention can be applied to a harvester such as an ordinary combine harvester or a corn harvester.

DESCRIPTION OF SYMBOLS 9 Cutting processing part 10 Feeder 37 Cutting transmission shaft 107 Relay transmission mechanism 111 Cutting transmission mechanism 126,127 Bearing 128,129 Support stay 130,131 Bearing holder 132 Insertion hole 133 Recessed part

Claims (5)

A mowing processing unit that cuts the crop and then feeds it to the middle part in the lateral direction of the machine body and joins it, a feeder that transports the crop that is fed laterally by the mowing process unit toward the rear of the machine body, and the machine body of the feeder A relay transmission mechanism that is located on one side in the lateral width direction and that transmits power from the traveling machine body side, and a cutting that is located on one side in the machine body lateral direction of the mowing processing part and transmits the power to each part of the mowing processing part A cutting transmission shaft, which is located on the rear side of the rear portion of the transmission mechanism and the cutting processing section and extends along the lateral width direction of the fuselage in a state extending over the lower transmission side of the relay transmission mechanism and the upper transmission side of the cutting transmission mechanism And
The cutting transmission shaft is rotatably supported by a support stay fixed to the back surface portion of the cutting processing unit via a bearing at each of one side portion and the other side portion in the extending direction,
A harvesting machine in which a bearing holder for holding the bearing is provided at each of one side and the other side in the extending direction, and the bearing holder is detachably supported by the support stay. The bearing holder is located on the shaft end side with respect to the support stay in each of the one side portion and the other side portion in the extending direction,
The harvesting machine according to claim 1, wherein the bearing holder at one side in the extending direction covers the bearing from the shaft end side. In either one of the pair of support stays, an insertion hole is formed having a size that allows the other bearing holder to pass therethrough and cannot pass one bearing holder,
The other support stay is formed with a recessed portion opened radially outward,
3. The harvester according to claim 1, wherein the recessed portion allows the cutting transmission shaft to enter a rotation support position along a radial direction in a state where the other bearing holder is mounted.   The input rotator to which power from the relay transmission mechanism is transmitted is fitted and supported on the feeder side outer end portion of the cutting transmission shaft rather than the feeder side bearing. The harvester according to any one of the above.   The harvesting machine according to claim 4, wherein the bearing holder on the feeder side is formed in a side open type in which both side surfaces in the axial direction of the bearing are opened.

Images