JP2013165656A - General purpose combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a general purpose combine harvester which can reversely drive a harvesting portion such as a feeder, and can smoothly reversely drive the feeder in a simple structure without excessively reducing the rotation speed of an engine.SOLUTION: In a general purpose combine harvester, a harvesting portion 3 having a feeder 9 and a reel 14 is connected to a travel machine frame 2, a feeder-driving shaft 69 is provided for driving the feeder 9 in a normal rotation to convey the grain stalks harvested with the harvesting portion 3 to the travel machine frame 2 side, and a reverse rotation transmission member 107 is provided for driving the feeder 9 in a reverse rotation. The general purpose combine harvester is provided with the reverse rotation transmission member 107 rotatably on the feeder-driving shaft 69, a reverse rotation driving shaft 97 for reversely driving the feeder 9 on the feeder 9 side, and a speed reducer 96 for reducing the power of the reverse rotation transmission member 107 and transmitting the power to the reverse rotation driving shaft 97.

Description

  The present invention relates to a general-purpose combiner that can drive a mowing unit in a reverse direction.

  A cutting unit having a feeder and a reel is connected to the traveling machine body, and a feeder drive shaft is provided to drive the feeder forward so that the cereals harvested by the cutting unit are conveyed to the traveling machine body, and the feeder is driven in reverse. A general-purpose combine described in Patent Document 1 that includes a reversing drive shaft that rotates so as to be able to discharge cereals by driving the feeder in reverse when the cereals are jammed in the feeder has been conventionally known. .

JP 2008-263865 A

  The general-purpose combine of the above document is provided with a reverse drive shaft that rotates in reverse to the input shaft via a bevel gear mechanism on the end side of the input shaft that inputs power to the feeder drive shaft, and is transmitted to the reverse drive shaft. By transmitting power to the feeder drive shaft side, the feeder can be driven in reverse. When the feeder is driven in reverse rotation, it is desirable to drive at a low speed for that purpose, but for this purpose, it is necessary to operate the engine at a low speed by a throttle lever or the like. There was a case where power was insufficient by reducing the rotation speed.

  The present invention provides a general-purpose combine that can drive a feeder in a reverse direction smoothly without reducing the engine speed more than necessary with a simple configuration in a general-purpose combine that can drive a cutting unit such as a feeder in reverse. The challenge is to do.

  In order to solve the above problems, the present invention firstly connects the cutting unit 3 having the feeder 9 and the reel 14 to the traveling machine body 2, and the cereals harvested by the cutting unit 3 are conveyed to the traveling machine body 2 side. A general-purpose combiner provided with a feeder drive shaft 69 for forwardly driving the feeder 9 and a reverse transmission member 107 that rotates so as to drive the feeder 9 in the reverse direction, the reverse transmission member 107 being a feeder. A drive shaft 69 is rotatably provided, and a reverse drive shaft 97 for driving the feeder 9 in the reverse direction is provided on the feeder 9 side, and a speed reduction mechanism 96 that reduces the power of the reverse transmission member 107 and transmits it to the reverse drive shaft 97. It is characterized by having.

  Second, the forward transmission member 102 for inputting the power for driving the feeder 9 to rotate forward to the feeder drive shaft 69 and the reverse transmission member 107 are arranged in a concentrated manner on one end side of the feeder drive shaft 69. It is characterized by.

  Thirdly, the frame body is reinforced by providing a lateral support cylinder 117 that rotatably supports the reverse drive shaft 97 on the frame body of the feeder 9.

  Fourth, a transmission sprocket 73 that rotates integrally with the feeder drive shaft 69, a transmission chain 77 that is wound around the transmission sprocket 73 and transmits power to the cutting blade 18, the take-up auger 19, and the take-up reel 14 side. The transmission chain 77 is provided with a reverse sprocket 113 for transmitting the power of the reverse drive shaft 97, and provided with switching means 66 for exclusively switching which of the feeder drive shaft 69 and the reverse drive shaft 97 the power is transmitted to. It is characterized by that.

  According to the above configuration, the power transmitted to the reverse transmission member for driving the feeder in the reverse direction is decelerated via the speed reduction mechanism, and the reduced power is transmitted to the reverse drive shaft for driving the feeder in the reverse direction. The feeder can be easily switched from the forward drive to the reverse drive without lowering the rotational speed. Furthermore, compared with the prior art which uses the drive shaft which reversely drives through the barrel gear case in the threshing device, the pretreatment unit can be driven in reverse with a simpler configuration.

  Further, if the forward transmission member for inputting the power for driving the feeder in the forward direction to the feeder drive shaft and the reverse transmission member are concentrated on one end side of the feeder drive shaft, the forward transmission member and the reverse transmission are provided. Maintenance work of members becomes easy.

  Further, if the frame is reinforced by providing a lateral support cylinder that rotatably supports the reverse drive shaft in the frame of the feeder, the support cylinder serves both to support the reverse drive shaft and to reinforce the feeder. Therefore, the number of parts can be reduced.

  A transmission sprocket that rotates integrally with the feeder drive shaft, a transmission chain that is wound around the transmission sprocket and transmits power to the cutting blade, the take-up auger, and the take-up reel side, and a reverse drive shaft on the transmission chain. Provided with a reverse sprocket for transmitting power, and provided with switching means for exclusively switching between the feeder drive shaft and the reverse drive shaft, the member for transmitting from the reverse drive shaft to the feeder drive shaft is used. Since the feeder can be driven reversely from the reverse drive shaft without any problems, the number of parts can be further reduced.

It is a general purpose combine to which the present invention is applied. It is a power system diagram of this general purpose combine. It is a principal part left view which shows the power transmission structure of a reaping part and a threshing apparatus. It is the principal part left view which showed the structure of the transmission switching mechanism. It is the principal part front view which showed the structure of the transmission switching mechanism. It is a principal part top view which showed the structure of the transmission switching mechanism. It is a motive power system diagram of this general purpose combine in another Example 1. It is the principal part left view which showed the structure of the transmission switching mechanism in another Example 1. It is a motive power system diagram of this general purpose combine in another Example 2.

  FIG. 1 is a general-purpose combine to which the present invention is applied, FIG. 2 is a power system diagram of the general-purpose combine, and FIG. 3 is a left side view of a main part showing a power transmission configuration of a mowing unit and a threshing apparatus. . From the figure, this general-purpose combiner is connected to a traveling machine body 2 supported by a pair of left and right crawler type traveling devices 1 and 1 that are traveling parts, and is movably connected to the front of the traveling machine body 2 so as to harvest cereal grains in the field. A cutting unit 3 for performing work is provided.

  The traveling body 2 is provided with a control unit 4 on which an operator enters and performs a steering operation at a position from the right in the vicinity of the rear side of the cutting unit 3. A threshing device 6 for performing the threshing operation of the cereal cereal, etc. is installed, and a grain tank 7 for storing the grain which is the processed product threshed by the threshing device 6 is arranged behind the control unit 4 and on the right side of the threshing device 6. The discharge part 8 which discharges the sawdust etc. after threshing is provided behind the threshing device 6.

  The cutting unit 3 includes a feeder 9 that conveys the harvested culm to the threshing device 6 side, a cutting frame 11 that is connected to the front end side of the feeder 9 and extends forward, and a front end side of the cutting frame 11. A pair of left and right dividers 12 provided, a pair of left and right support arms 13, 13 extending forward from the upper side of the rear end serving as the base end of the cutting frame 11, and the left and right support arms 13 , 13 and a take-up reel 14 rotatably supported between the extended ends.

  A reel cylinder 16 is installed between the support arm 13 and the cutting frame 11 on one of the left and right sides (the left side in the illustrated example) to raise and lower the scraping reel 14 with respect to the main body of the cutting unit 3 by expansion and contraction. The support arm 13 on the other side is provided with a transmission case 17 that transmits power to the take-up reel 14 side. That is, the take-up reel 14 is moved up and down with respect to the main body of the cutting unit 3 and rotated around its own axis by the power transmitted from the transmission case 17.

  According to the cutting unit 3 having this configuration, the cereals in the field are divided into a cutting side that is between the left and right dividers 12 and a non-cutting side that is both the left and right sides of the cutting side, and the cutting side The root of the culm is reaped by the reciprocating cutting blade 18 provided behind the divider 12 while being squeezed to the reaping part 3 side by the rake reel 14. Thus, the harvested culm is fed to the front end side of the feeder 9 by the conveying auger 19 on the reaping frame 11 side, and the culm conveyed to the feeder 9 is rearward by the conveying conveyor provided in the feeder 9. It is conveyed to. The harvested cereals conveyed to the rear end side of the feeder 9 are sent to the upper front end side of the threshing device 6.

  The threshing device 6 is threshed by the threshing unit 21 on the upper side of the threshing device 6 and performing the threshing operation of the harvested cereal trough conveyed from the feeder 9 and on the lower side of the threshing device 6. And a sorting unit 22 that sorts the cereals into grains and dusts such as sawdust.

  The threshing portion 21 is provided around a handling chamber 24 into which the harvested cereal meal is introduced from the rear end side of the feeder 9, and a front and rear handling cylinder rotation shaft 26 formed over the entire front and rear direction of the handling chamber 24. A cylindrical handling cylinder 27 which is provided so as to be rotatable and has a front end side having a funnel shape, and an arc shape which is below the handling cylinder 27 and has a hollow center in the rear view along the shape of the handling cylinder 27. And a plurality of dust feeding valves 29 arranged on the ceiling side of the handling chamber 24 in the front-rear direction.

  The sorting unit 22 swings and sorts the cereals that have passed through the receiving net 28, a tang fan 32 that blows the sorting wind, and discharges the dust after sorting to the outside of the machine. A number sorting fan 33 and the like.

  As a result, the grain that has leaked from the rocking sorter 31 is sorted into the first grain and the second grain that have been sorted by the sorting fan 32. The selected grain is discharged into the Glen tank 7 where the grain is stored by the lifted helix 34, and the grain is taken out through the auger 36 extended from the upper rear side of the traveling machine body 2. And discharged.

  Next, the transmission configuration of the general-purpose combine will be described with reference to FIGS. As shown in FIG. 2, each part of the general combine is driven by the power of the engine 38. The rotational power generated by the engine 38 is output to the output shaft 39, and the output shaft 39 is provided so that the first work pulley 41, the traveling pulley 42, and the discharge pulley 43 rotate integrally.

  The power transmitted to the traveling pulley 42 is transmitted to the traveling HST 44 by a belt, and is transmitted steplessly and then transmitted to the left and right crawler traveling devices 1, 1 through the traveling transmission.

  The power transmitted to the discharge pulley 43 is transmitted to the horizontal spiral 48 in the above-mentioned Glen tank 7, the vertical spiral 47 and the discharge spiral 46 in the auger 36, etc., so that the grains are discharged out of the machine. The Glen tank 7 and the auger 36 can be driven. Incidentally, the belt transmission to the plurality of discharge spirals 46, 47, 48 is intermittently operated by a discharge clutch 49 formed of a tension pulley or the like.

  The power transmitted to the work pulley 41 is belt-transmitted to the first work transmission shaft 51, and the mowing unit 3 and the threshing device 6 are driven by the power transmitted to the first work transmission shaft 51. More specifically, the work transmission belt 53 that is wound around the work pulley 41 and the work transmission pulley 52 that rotates together with the first work transmission shaft 51 includes a tension pulley that adjusts the tension of the work transmission belt 53. A work clutch 54 configured to intermittently power the engine 38 to the first work transmission shaft 51 is provided, and the power output from the engine 38 is intermittently transmitted from the output shaft 39 to the first work transmission shaft 51 side. Transmitted in a possible configuration.

  The first work transmission shaft 51 is provided so that the second work pulley 56 and the sorting pulley 61 rotate together. Thus, the power transmitted to the first work transmission shaft 51 is transmitted to the second work transmission pulley 58 via the second work transmission belt 58 wound around the second work transmission pulley 56 and the second work transmission pulley 57. Is transmitted to the second work transmission shaft 59 that rotates integrally with the motor 57. The power transmitted to the second work transmission shaft 59 is transmitted via the bevel gear 62 to the handling cylinder rotating shaft 26 that rotationally drives the handling cylinder 27 in the threshing device 6. The power transmitted to the first work transmission shaft 51 is transmitted to the swinging sorter 31, the No. 2 sorter fan 33 on the sorter 22 side, the above-mentioned grain helix 34, etc. via the sorter pulley 61. In addition, the Kara fan 32 is driven by driving the first work transmission shaft 51.

  The power transmitted to the second work transmission shaft 59 is transmitted by the transmission switching mechanism 66 to the normal rotation transmission portion 67 for transmitting the power for driving the conveyance conveyor in the feeder 9 to rotate in the normal direction, or for driving the conveyance conveyor in the reverse direction. The power is transmitted to the feeder drive shaft 69 that drives the transport conveyor via one side of the reverse transmission portion 68 that transmits the power. The power transmitted from the second work transmission shaft 59 to the feeder drive shaft 69 by the transmission switching mechanism 66 drives a transport conveyor via a conveyor sprocket 71 that rotates integrally with the feeder drive shaft 69. , 72 can be driven to drive the conveyor forward or reverse. The configuration of the transmission switching mechanism 66 will be described later.

  The power transmitted to the feeder drive shaft 69 is a cutting sprocket 73 (transmission sprocket) that rotates integrally with the feeder drive shaft 69 provided on the end side of the feeder drive shaft 69 on the inner side of the traveling machine body 2 (right side in the illustrated example). ) And a cutting power transmission chain 77 wound around the cutting power transmission sprocket 76, and is transmitted to a horizontal cutting power driving shaft 78 that is disposed on the front side of the feeder 9 and rotates integrally with the cutting power transmission sprocket 76. The power transmitted to the cutting drive shaft 78 drives the cutting blade 18 disposed on the cutting frame side 11 of the cutting unit 3, the take-up auger 19, and the take-up reel 14.

  Specifically, the power transmitted to the cutting drive shaft 78 is transmitted to the reciprocating type cutting blade 18 via the bell clamp 79, an auger sprocket 81 rotating integrally with the cutting drive shaft 78, an auger The auger transmission chain 84 wound around the transmission sprocket 83 is transmitted to an auger drive shaft 82 that rotates integrally with the auger transmission sprocket 83 and drives the take-in auger 19. At this time, the diameter of the auger transmission sprocket 83 is larger than that of the auger sprocket 81, and the power transmitted from the cutting drive shaft 78 to the auger drive shaft 82 is decelerated (see FIG. 3).

  A reel sprocket 86 that rotates integrally with the auger drive shaft 82 is provided on the end side of the auger drive shaft 82, and the power transmitted to the auger drive shaft 82 is transmitted to the reel sprocket 86 and the reel counter shaft. It is transmitted to the reel counter shaft 87 side via a reel transmission chain 89 that is wound around a reel transmission sprocket 88 that rotates integrally with 87.

  The power transmitted to the reel counter shaft 87 is applied to a reel pulley 91 that rotates integrally with the reel counter shaft 87 and a reel transmission pulley 93 that rotates together with a reel drive shaft 92 that is a drive shaft of the take-up reel 14. The reel transmission belt 94 is transmitted to the reel drive shaft 92, and the take-up reel 14 can be driven to rotate. At this time, since the diameter of the reel transmission sprocket 88 is formed larger than the diameter of the reel sprocket 86 and the diameter of the reel transmission pulley 93 is also formed larger than the diameter of the reel pulley 91, the auger drive shaft 82 to the reel counter shaft 87, the power transmitted to the reel drive shaft 92 is gradually decelerated (see FIG. 3).

  The power transmitted from the auger drive shaft 82 to the take-up reel 14 side is transmitted from the left side to the right side of the cutting unit 3 by the reel counter shaft 87, and the reel transmission belt 94 is connected to the cutting unit 3. It is accommodated in the transmission case 17 on the right side.

  Next, the configuration of the transmission switching mechanism will be described with reference to FIGS. 4 to 6 are a left side view, a front view, and a plan view of the main part showing the configuration of the transmission switching mechanism. From the illustrated example, the output shaft 39 is disposed on the lower front side of the threshing device 6, and the first work transmission shaft 51 to which power is transmitted from the output shaft 39 is disposed at the front portion of the sorting unit 22. ing. Further, the second work transmission shaft 59 to which the power transmitted to the first work transmission shaft 51 is transmitted is disposed on the front end side of the threshing portion 21, and the power transmitted to the second work transmission shaft 59. Is transmitted to the cutting part 3 side through the transmission switching mechanism 66 arranged on the front side of the threshing device 6.

  The transmission switching mechanism 66 is decelerated by a normal rotation transmission portion 67 that transmits the power for driving the cutting unit 3 in the normal direction to the feeder drive shaft 69 and a power for driving the cutting unit 3 in the reverse direction by the reduction mechanism 96. A reverse transmission unit 68 that transmits power to the reverse drive shaft 97 is provided, and the power transmitted to the second work transmission shaft 59 can be transmitted to the feeder drive shaft 69.

  The forward rotation transmission portion 67 is attached to the end side of the second work transmission shaft 59 on the outer side of the traveling machine body 2 (left side in the illustrated example), and rotates forward with the second work transmission shaft 59. 101, a normal transmission pulley 102 that rotates integrally with the feeder drive shaft 69, a normal transmission pulley 101, a normal transmission belt 103 wound around the normal transmission pulley 102, and the tension of the normal transmission belt 103. It comprises a tension pulley having a tight arm 104a to be adjusted, and a forward rotation clutch 104 that interrupts the power transmitted to the feeder drive shaft 69.

  The reverse transmission portion 68 rotates integrally with the reverse rotation drive shaft 97 for driving the cutting portion 3 in the reverse direction and the second work transmission shaft 59 and is adjacent to the forward rotation pulley 101 (on the right side in the illustrated example). , A reverse transmission pulley 107a rotatably supported on the feeder drive shaft 69, a reverse transmission belt 108 wound around the reverse pulley 106 and the reverse transmission pulley 107a, and a reverse transmission pulley The speed reduction sprocket 107 b connected to the feeder drive shaft 69 and supported by the feeder drive shaft 69, the speed reduction transmission sprocket 109 rotating integrally with the reverse rotation transmission shaft 97, and the speed reduction sprocket 107 b and the speed reduction transmission sprocket 109 are hung around. Adjusting the tension of the transmission chain 111 for transmitting power to the reverse drive shaft 97 side and the reverse transmission belt 108 That a tight reverse clutch 112 intermittently the power arm 112a is configured with a tension pulley having a is the transmission to reverse transmission shaft 97 side, and is configured with a.

  The reverse transmission shaft 97 is disposed on the lower front side of the feeder drive shaft 69, and a reverse rotation sprocket 113 that rotates integrally with the reverse rotation transmission shaft 97 is provided at the end opposite to the speed reduction transmission sprocket 109. However, it is comprised so that it may mesh with the said cutting transmission chain 77 from the outer side (lower side in the example shown in figure) (refer FIG. 4). In other words, the power transmitted to the reverse drive shaft 97 can drive the mowing drive chain 77 in the opposite direction to the case where the feeder drive shaft 69 is driven forward.

  The speed reduction mechanism 96 includes the reverse rotation transmission pulley 107a having a diameter larger than the reverse rotation pulley 101, the speed reduction transmission sprocket 109 having a diameter larger than the speed reduction sprocket 107b, and the feeder. The reverse transmission pulley 107a that idles with respect to the drive shaft 69 and the speed reduction sprocket 107b are configured by an exterior member 107 formed so as to rotate integrally with the same shaft center (feeder drive shaft 69) (see FIG. 2 and FIG. 2). (See FIG. 4). At this time, the exterior member 107 is formed so that the diameter of the speed reduction sprocket 107b on the power output side is smaller than the diameter of the reverse transmission pulley on the power receiving side.

  Thus, the speed reduction mechanism 96 decelerates the power transmitted from the reverse rotation pulley 106 that rotates integrally with the second work transmission shaft to the reverse rotation transmission pulley 107a, and is transmitted to the reverse rotation transmission pulley 107a by the integrally formed exterior member 107. The power transmitted from the deceleration sprocket 107b is decelerated, and the power transmitted from the deceleration sprocket 107b to the deceleration transmission sprocket 109 is decelerated. Therefore, the power transmitted to the second work transmission shaft 69 is transmitted to the reverse transmission shaft 97 after being sufficiently decelerated via the speed reduction mechanism 96.

  The power decelerated by the speed reduction mechanism 96 is transmitted to the reverse transmission shaft 97 side by a transmission chain 111 wound around the deceleration sprocket 107b and the reduction transmission sprocket 109 rotating integrally with the reverse rotation transmission shaft 97. Therefore, even if the power transmitted to the transmission chain 111 is low speed, the decelerated power is reliably transmitted to the reverse drive shaft 97 side.

  The forward rotation clutch 104 and the reverse rotation clutch 112 are configured to be selectively connected. That is, when the forward rotation clutch 104 is connected, the reverse rotation clutch 112 is disconnected, while when the reverse rotation clutch 104 is connected, the normal rotation clutch 112 is disconnected. In other words, both the clutches 104 and 112 are operated only in a state where both are disconnected or one of them is connected.

  Further, the forward clutch 104 and the reverse clutch 112 are operated by the tight arms 104a and 112a swinging on the same axis as the second work transmission shaft 59, and the tight arm 112a on the reverse clutch side is operated as the forward clutch. Since it is formed so as to be longer than the tight arm 104a on the side (see FIGS. 4 and 5), the clutches provided close to each other do not interfere with each other.

  The feeder drive shaft 69 is disposed in a cylindrical swing shaft 116 that extends in the left-right direction and serves as the swing shaft of the cutting unit 3 (feeder) that swings up and down, and the reverse drive shaft. 97 is arrange | positioned so that it may be accommodated in the reinforcement pipe 117 attached so that the right-and-left end side of the frame of the feeder 9 might be connected (refer FIG.5 and FIG.6). Therefore, the drive shafts 69 and 97 can be protected without separately providing a member for protecting the feeder drive shaft 69 and the reverse drive shaft 97.

  With the above configuration, when power is transmitted from the output shaft 39 side of the engine 38 to the second work transmission shaft 59, the forward rotation clutch 104 is connected and the reverse rotation clutch 112 is disconnected, the transmission is transmitted to the second work transmission shaft 59. The generated power is transmitted to the feeder drive shaft 69 via the forward transmission transmission portion 68. When the power is transmitted to the feeder drive shaft 69, the feeder drive chain 72 and the cutting drive chain 77 are driven in the forward rotation direction. Thereby, the conveyance conveyor, the take-up auger 19 and the take-up reel 14 can be driven to rotate forward. At this time, since the reverse rotation clutch 112 is disconnected, the power transmitted from the cutting drive chain 77 to the reverse rotation transmission shaft 97 is transmitted to the reverse rotation transmission pulley 107a, and the reverse rotation transmission pulley 107a runs idle.

  On the other hand, when power is transmitted from the output shaft 39 side of the engine 38 to the second work transmission shaft 59, the forward rotation clutch 104 is disconnected and the reverse rotation clutch 112 is connected, the power is transmitted to the second work transmission shaft 59. The power is decelerated and transmitted to the transmission chain 111 via the reverse rotation transmission pulley 107 a and the reduction sprocket 107 b that idle with respect to the feeder drive shaft 69, and the power transmitted to the transmission chain 111 is transmitted to the reverse transmission shaft 97. Is done. The power transmitted to the reverse transmission shaft 97 drives the cutting drive chain 77 in the reverse rotation direction according to the above-described configuration, so that the feeder driving shaft 69 and the cutting drive shaft 78 are driven in the reverse rotation direction by the cutting drive chain 77 driven in reverse rotation. Can be made. Thereby, a conveyance conveyor, the take-in auger 19, and the take-in reel 14 can be reversely driven.

  With this configuration, the power transmitted to the reverse transmission shaft 97 that reversely drives the feeder drive shaft 69 (the mowing drive chain 77) is decelerated by the speed reduction mechanism 96. When switching from the rolling drive to the reverse driving, the reverse rotation can be smoothly driven at a low speed without operating the engine at a lower speed than necessary. Further, the power transmitted to the reverse drive shaft 97 can be transmitted from the reverse drive shaft 97 to the mowing drive shaft 78 since the reverse power can be transmitted to the mowing drive shaft 78 side by directly driving the mowing drive chain 77 in the reverse direction. There is no need to provide a separate member, and the number of parts can be reduced.

  In other words, according to the above configuration, the reverse rotation power that is transmitted to the second work transmission shaft 59 and rotates in the same direction as that of the normal rotation drive is cut through the reverse transmission portion 68 instead of the feeder drive shaft 69. By transmitting to the reverse sprocket 113 meshed so as to drive the transmission chain 77 in the reverse direction, the cutting transmission chain 77 can be driven in the reverse direction, so that the rotation direction of the reverse rotation power is rotated in the direction opposite to the normal rotation direction. Therefore, the cutting unit 3 can be driven in reverse without providing a separate conversion gear.

  Further, as shown in FIG. 4, the reverse sprocket 113 is engaged from the lower side of the cutting transmission chain 77 and is disposed in the vicinity of the cutting sprocket 73 around which the cutting transmission chain 77 is wound. The tensile force of 77 can be improved and the transmission chain can be prevented from slackening.

  Further, the transmission switching mechanism 66 arranged on the front end side of the threshing device 6 is easily damaged because the forward rotation transmission part 67 is arranged on the end side of the left and right outer sides (left side in the illustrated example). Since the forward transmission belt 103 on the rolling side is disposed outside the traveling machine body 3, the maintainability is improved. Furthermore, the reverse transmission shaft 68 can be set as short as possible by arranging the reverse transmission portion 68 on the left and right inner sides (right side in the illustrated example) adjacent to the forward transmission portion 67.

  Next, based on FIG.7 and FIG.8, about another Example 1 of this invention, a different point from a present Example is demonstrated. FIG. 7 is a power system diagram of the present general-purpose combiner in another embodiment 1, and FIG. 8 is a left side view of the main part showing the configuration of the transmission switching mechanism in another embodiment 1. According to the illustrated example, the reverse transmission portion 68 of the transmission switching mechanism 66 is configured to transmit the power transmitted to the first work transmission shaft 51 to the reverse transmission shaft 97.

  The reverse rotation transmission portion is provided near the traveling machine body (on the right side in the illustrated example) so that the reverse rotation pulley rotates integrally with the first work transmission shaft, and the reverse rotation transmission is rotatably supported by the feeder drive shaft. An exterior member 107 composed of a pulley 107a and a speed reduction sprocket 107b is disposed on the inner side of the feeder drive shaft 69 on the traveling machine body side. It is provided so as to extend from the inner side of the machine body (right side in the illustrated example) to the cutting transmission chain 77.

  With this configuration, the reverse drive shaft 97 can be shortened as compared with the case where the reverse drive shaft 97 is arranged so as to cross the left and right direction of the feeder, so the reverse drive portion 68 can be configured more compactly. . Further, as shown in FIG. 8, the reverse clutch 112 is arranged on the upper front side of the first work transmission shaft 51, so that the forward clutch 104 and the tight arms 104a and 112a for operating the reverse clutch 112 are arranged. Since they are not densely assembled, the assembly work of the transmission switching mechanism 66 is facilitated.

  Next, based on FIG. 9, a different point from the present embodiment will be described in another embodiment 2 of the present invention. FIG. 9 is a power system diagram of the general-purpose combiner according to the second embodiment. As shown in FIG. 9, the forward transmission portion 67 of the transmission switching mechanism 66 is configured to transmit the power transmitted to the first work transmission shaft 51 to the feeder drive shaft 69.

  The forward rotation transmission portion 67 is provided close to the traveling machine body (left side in the illustrated example) so that the forward rotation pulley 102 rotates integrally with the first work transmission shaft 51, and the front portion of the sorting portion 22. The first work transmission shaft 51 disposed on the side is directly transmitted to the feeder drive shaft 69 side.

  With this configuration, since the power transmission path by the forward transmission portion 67 is shortened, the configuration is simplified, and both the forward transmission portion 67 and the reverse transmission portion 68 that constitute the transmission switching mechanism 66 are provided. Since it is arranged on the left side of the traveling machine body 2, the maintainability is also good. Further, since the forward rotation clutch 104 is arranged on the upper front side of the first work transmission shaft 51, the arrangement of the tight arms 104a and 112a for operating the normal rotation clutch 104 and the reverse rotation clutch 112 is not densely arranged. 66 is easier to assemble.

2 traveling machine body 3 cutting part 9 feeder 14 take-up reel (reel)
18 Cutting blade 19 Take-in auger 66 Transmission switching mechanism (switching means)
69 Feeder drive shaft 73 Mowing sprocket (Transmission sprocket)
77 Mowing transmission chain (transmission chain)
96 Deceleration mechanism 102 Forward rotation transmission pulley (Forward rotation transmission member)
107 Exterior member (reverse transmission member)
113 Reverse sprocket 117 Reinforcement pipe (support cylinder)

Claims (4)

  The cutting part (3) having the feeder (9) and the reel (14) is connected to the traveling machine body (2) so that the cereals harvested by the cutting part (3) are conveyed to the traveling machine body (2) side. A general purpose combine provided with a feeder drive shaft (69) for normally driving the feeder (9) and a reverse transmission member (107) that rotates to drive the feeder (9) in the reverse direction. The transmission member (107) is rotatably provided on the feeder drive shaft (69), and the reverse drive shaft (97) for reversely driving the feeder (9) is provided on the feeder (9) side. 107) A general purpose combine equipped with a speed reduction mechanism (96) that decelerates the power of 107) and transmits it to the reverse drive shaft (97).   A forward transmission member (102) that inputs power to drive the feeder (9) in the forward direction to the feeder drive shaft (69) and the reverse transmission member (107) are arranged on one end side of the feeder drive shaft (69). The general-purpose combine according to claim 1 arranged in a centralized manner.   The general purpose according to claim 1 or 2, wherein a lateral support cylinder (117) for rotatably supporting the reverse drive shaft (97) is provided on the frame of the feeder (9) to reinforce the frame. Combine.   A transmission sprocket (73) that rotates integrally with the feeder drive shaft (69), wound around the transmission sprocket (73), and on the cutting blade (18), the take-up auger (19), and the take-up reel (14) side A transmission chain (77) for transmitting power and a reverse sprocket (113) for transmitting the power of the reverse drive shaft (97) are provided on the transmission chain (77), and a feeder drive shaft (69) and a reverse drive shaft (97 The general-purpose combiner according to any one of claims 1 to 3, further comprising switching means (66) for exclusively switching to which of the power is transmitted.

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