JP2008182998A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely grasp discharged culm clogging in a discharged culm conveying system from the rear end of a feed chain 6 to a discharged culm chain 44 in a combine harvester equipped with a threshing apparatus 5 with the feed chain 6 and the culm discharging chain 44 for receiving discharged culms after threshing from the feed chain 6 and conveying the discharged culms. <P>SOLUTION: A longitudinal long support frame 80 is vertically adjustably fixed to the upper part of the feed chain 6 in the threshing apparatus 5. A nipping guide member 81 standing face to face to the feed chain 6 and nipping the stalk foot side of reaped grain culms together with the feed chain 6 is liftably and descendably fixed to the lower side of the support frame 80. The rear portion of the support frame 80 is equipped with a discharged culm clogging detection means 91 for detecting whether or not a discharged culm clogging occurs between the feed chain 6 and the nipping guide member 81 from the lifting and lowering state of the nipping guide member 81. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine that continuously cuts threshed cereal grains in a field.

  2. Description of the Related Art Conventionally, a traveling machine body of a combine machine is mounted with a handling cylinder for threshing a harvested cereal rice cake that is nipped and conveyed by a feed chain, and a waste conveying device that inherits and conveys the waste after threshing from the feed chain. .

  An example of a combine having such a configuration is disclosed in Patent Document 1. In the combine of Patent Document 1, the waste transporting device is disposed on the rear side (feed end side) of the feed chain. The waste transporting device is provided with a waste clogging sensor that detects the clogging of the waste at the location.

The waste (granulated soot) inherited from the rear end of the feed chain to the waste transporting device is discharged to the rear of the traveling machine body in a long state or appropriately lengthened with a waste cutter at the rear of the threshing device. After being cut short, it is discharged to the rear of the traveling aircraft.
JP 2002-34326 A

  By the way, in the waste conveying system from the rear part of the feed chain to the waste conveying device, the phenomenon of waste clogging is a problem that always accompanies, but such waste clogging occurs only at the location of the waste conveying device. It does not mean that it can occur well in the vicinity of the transfer point from the feed chain to the waste transporting device.

  However, in the above-described conventional combine, since the waste clogging detection in the waste transporting system relies on the waste clogging sensor at the location of the waste transporting device, Since the waste is only collected from the location toward the upstream side of the transport, the waste transport device maintains the normal state without any waste clogging. The waste clogging sensor detects the fact that the waste is clogged. Can not. For this reason, in the said conventional structure, there existed a problem that it was difficult to grasp | ascertain the waste clogging in a waste conveyance system reliably irrespective of the generation | occurrence | production location.

  Therefore, the present invention has a technical problem to provide a combine that solves the above problems.

  In order to solve this technical problem, the invention of claim 1 includes a threshing device with a feed chain mounted on a traveling machine body, and a waste transporting device that inherits and transports waste after threshing from the feed chain. A sandwiching guide for sandwiching the stock side of the harvested cereal rice cake together with the feed chain on a longitudinal support frame disposed above the feed chain in the threshing device in the threshing device A member is attached to the feed chain so as to be movable up and down. The rear portion of the support frame is disposed between the feed chain and the sandwiching guide member from the lifted state of the sandwiching guide member. The waste clogging detection means for detecting whether clogging has occurred is attached.

  According to a second aspect of the present invention, there is provided the combine according to the first aspect, wherein the support frame is attached to the threshing device such that the position of the support frame can be adjusted along the direction of contacting and separating from the feed chain.

  According to a third aspect of the present invention, in the combine according to the first or second aspect, the sandwiching guide member includes a plurality of guide rods connected in series along a feeding direction of the feed chain, and the adjacent guide rods The guide rods are connected to each other by lateral pivot pins so that they can be moved up and down with each pivot pin as a fulcrum. On the other hand, the waste clogging detection means is located at the end. A limit switch having a sensor that can contact the upper surface of the guide rod, and the rear portion of the support frame hits the upper surface of the rearmost guide rod when the support frame is at the highest position, and is raised at the last guide rod A stopper member for restricting movement and upward rotation around the pivot pin is attached.

  According to the first aspect of the present invention, the holding guide member for holding the stocker side of the harvested cereal rice cake together with the feed chain on the longitudinal support frame disposed above the feed chain in the threshing device, facing the feed chain. Is attached so as to be able to move up and down so as to come into contact with and away from the feed chain, and the rear portion of the support frame is disposed between the feed chain and the holding guide member from the up and down state of the holding guide member. Since a waste clogging detecting means for detecting whether clogging has occurred is attached, waste clogging occurred at a location that could not be detected by the conventional configuration, that is, from the feed chain to the waste transporting device. The waste clogging generated in the vicinity of the inherited portion can be reliably detected by the waste clogging detecting means.

  In addition, when a waste clog occurs at a location of the waste transporting device, the clogged waste accumulates from here to the upstream side of the transport, and as a result, the waste clog spreads to the vicinity of the inherited location. Therefore, also in this case, the fact of the waste clogging can be reliably detected by the waste clogging detection means.

  Therefore, according to the first aspect of the invention, there is an effect that it is possible to surely grasp the waste clogging in the waste transport system from the rear portion of the feed chain to the waste transport device regardless of the occurrence location.

  Moreover, the support frame not only serves to support the clamping guide member so as to be movable up and down, but also serves as a mounting seat for the waste clogging detection means. There is no need to provide a separate member. This contributes to the suppression of the number of parts.

  By the way, when a backlash or a gap occurs between the feed chain and the clamping guide member due to wear of the clamping guide member due to the use of a combine for a long period of time, the clamping guide member with respect to the feed chain It is necessary to adjust the position.

  In this regard, for example, when the squeezed clogging detecting means is attached to an appropriate portion of the handling chamber of the threshing device, when the position adjustment operation of the clamping guide member is performed, the operation is not sufficient, and the clamping is performed. Since the position of the waste clogging detection means with respect to the guide member has to be adjusted, it is troublesome and troublesome.

  On the other hand, as in the invention of claim 2, the support frame to which the clamping guide member and the waste clogging detecting means are attached is moved along the direction in which the threshing device is in contact with and separated from the feed chain. If the configuration of adjusting the position is adopted, the positional relationship between the clamping guide member and the waste clogging detection means is fixed via the support frame.

  Therefore, if it is desired to adjust the position of the clamping guide member with respect to the feed chain, it is only necessary to adjust the position of the support frame with respect to the feed chain. There is no need to make adjustments. Therefore, the labor of adjusting the position of the holding guide member with respect to the feed chain can be remarkably reduced.

  According to a third aspect of the present invention, the clamping guide member includes a plurality of guide rods connected in series along the feed direction of the feed chain, and the adjacent guide rods are used as lateral support pins. Are connected to each other so that the above-mentioned pivot pins serve as fulcrums and can be moved up and down.

  For this reason, even if the amount of harvested culm inherited by the feed chain changes, the posture of each guide trough can be changed to a serpentine shape following the change, so the cooperation between the feed chain and the clamping guide member Thus, the harvested cereal can be securely clamped.

  Further, the waste clogging detection means is a limit switch having a sensor that can contact the upper surface of the guide rod located at the rearmost end, and the rear end of the support frame has the rearmost tail at the highest position. A stopper member is attached to the upper surface of the guide rod and restricts the upward movement of the rearmost guide rod and the upward rotation around the pivot pin.

  When such a configuration is adopted, in the state where the rearmost guide rod reaches the highest lift position, the presence of the stopper member not only prevents the rearmost guide rod from further rising, It is possible to reliably prevent the rearmost guide rod from turning upward around the pivot pin.

  Accordingly, an excessive external force due to the pushing-up movement of the last guide rod does not act on the sensing body of the waste clogging detection unit, so that the waste clogging detection unit caused by the external force can be reliably broken down. There is an effect that can be prevented.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 8). 1 is a left side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a side sectional view of the threshing device, FIG. 4 is a skeleton diagram of the power transmission system, and FIG. 5 is a relationship between the feed chain and the clamping guide member. FIG. 6 is an enlarged side view of the waste clogging detecting means, FIG. 7 is a schematic side view showing the clamping guide member in a state where the waste clogging has occurred, and FIG. 8 is an explanatory diagram of the safety circuit.

(1). First, the general structure of the combine will be described with reference to FIGS.

  The combine for four-row cutting in the embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 and 2. At the front part of the traveling machine body 1, a pre-cutting processing device 3 that takes in planted cereal pods (uncut cereal potatoes) in the field is mounted by a single-acting hydraulic cylinder 4 so as to be adjustable up and down.

  A threshing device 5 with a feed chain 6 and a glen tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. In this case, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the Glen tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. A discharge auger 8 is provided at the rear of the traveling machine body 1 so as to be able to turn. The grain in the Glen tank 7 is carried out from the tip throat throw hole of the discharge auger 8 to, for example, a truck bed or a container.

  A control unit 9 is provided between the pre-cutting processing device 3 and the Glen tank 7. A steering handle 10 for changing the traveling (turning) direction and turning speed of the traveling machine body 1, a control seat 11 on which an operator is seated, and the like are disposed in the control unit 9.

  A side column 12 disposed on one side of the control seat 11 is used for a power transmission operation to the main transmission lever 13 and the sub transmission lever 14 for performing a speed change operation of the traveling machine body 1 and the pre-cutting processing device 3. A mowing clutch lever 15 and a threshing clutch lever 16 for power disconnection operation to the threshing device 6 are provided so as to be tiltable forward and backward.

  An engine 17 as a power source is disposed below the control unit 9. A transmission case 18 is disposed in front of the engine 17 for appropriately shifting the power from the engine 17 and transmitting it to the left and right traveling crawlers 2. The engine 17 of the embodiment is a diesel engine.

  The pre-harvest processing device 3 includes a clipper-type cutting blade device 19, a culm pulling device 20 for four strips, a culm conveying device 21, and a weed body 22. The cutting blade device 19 is disposed below the cutting frame 3a constituting the framework of the pre-cutting processing device 3. The grain raising apparatus 20 is disposed above the cutting frame 3a. The corn straw transporting device 21 is disposed between the corn straw pulling device 20 and the front end of the feed chain 6. The weed body 22 is provided in front of the lower part of the grain raising device 20. The traveling machine 1 continuously cuts the uncut grain culm in the field by driving the pre-cutting processing device 3 while driving the left and right traveling crawlers 2 by the engine 17 and moving in the field.

  The threshing device 5 includes a handling cylinder 23 for threshing the harvested cereal, a swing sorting mechanism 24 and a wind sorting mechanism 25 arranged below the handling cylinder 23, and a threshing taken out from the rear part of the handling cylinder 23. And a dust-feed port processing cylinder 26 for reprocessing. The handling cylinder 23 is built in the handling chamber 46 of the threshing device 5. The swing sorting mechanism 24 is for swinging and sorting the cereals threshed by the handling cylinder 23, and the wind sorting mechanism 25 is for wind sorting the threshing.

  In a portion of the threshing device 5 that faces the feed side of the feed chain 6, a clamping guide member 81 that clamps the stock side of the harvested cereal mash for four strips together with the feed chain 6 is arranged (FIGS. 1 and 2). 5 and FIG. 7). The stock source side of the harvested cereal meal conveyed from the pre-harvest processing device 3 is inherited by the feed chain 6 and is nipped and conveyed rearward by the feed chain 6 and the nipping guide member 81. Then, the tip side of the harvested cereal culm is carried into the threshing device 5 and threshed by the handling cylinder 23. In addition, the rotating shaft 67 (refer FIG. 4) of the handling cylinder 23 is extended along the feed direction (the advancing direction of the traveling body 1) of the harvested cereal by the feed chain 6.

  In the lower part of the threshing device 5, there are a first receiving bowl 27 where most of the grains selected from the two sorting mechanisms 24, 25 are collected, a grain with a branch stem, a grain of ears, etc. There is provided a second receiving bowl 28 where second things gather. The two receiving rods 27 and 28 of the embodiment are horizontally provided above the rear portion of the traveling crawler 2 in a side view in order of the first receiving rod 27 and the second receiving rod 28 from the front side in the traveling direction of the traveling machine body 1.

  The swing sorting mechanism 24 includes a crimp net 29 stretched below the handling cylinder 23, a feed pan 30 and a chaff sheave 31 disposed below the crimp net 29, and a net-like grain sheave 32 disposed below the chaff sheave 31. And a Strollac 33 disposed on the downstream side (rear side) of the chaff sheave 31.

  The wind sorting mechanism 25 includes a tang fan 34 disposed below the feed pan 30 and an auxiliary blower fan 35 disposed on the upstream side (front side) of the tang fan 34. The tang fan 34 is configured to blow through the chaff sheave 31 upward from the bottom and blow out the sorting air toward the dust exhaust fan 36 disposed at the rear of the threshing device 5.

  The auxiliary blower fan 35 is for assisting the wind selection by the tang fan 34. The auxiliary sorting air from the auxiliary air blower fan 35 is set so as to pass through the air passage 38 formed between the feed pan 30 and the fan case 37 surrounding the tang fan 34, and to go to the chaff sheave 31 and the Glen sheave 32. The auxiliary sorting wind blows away the swarf in the cereal which drops from the chaff sheave 31 to the grain sheave 32 to improve the sorting performance of the wind sorting mechanism 25 as a whole.

  The threshing that has been threshed by the handling cylinder 23 and leaked from the crimp net 29 falls on the feed pan 30 that swings back and forth and is sent to the rear chaff sheave 31 while undergoing swing selection. At this time, the threshing on the feed pan 30 and the chaff sheave 31 receives the sorting wind flowing backward from the tang fan 34 and the auxiliary blower fan 35. Due to the interaction between the rocking sorting and the wind sorting, the threshing is separated into grains and swarf.

  The first thing such as a granule passes from the chaff sheave 31 through the grain sheave 32 and is collected in the first receiving bowl 27 while being guided by the cereal plate etc. From here, the first conveyor 39 in the first receiving bowl 27 and It is sent to the grain tank 7 through the cereal conveyor 58 (see FIG. 4) in the cereal cylinder 40.

  The second item such as the grain with branches and the like cannot pass through the Glen sieve 32 and is collected in the second receiving rod 28 behind the first receiving rod 27, and from here the second conveyor 41 in the second receiving rod 28. And it is sent to the second processing cylinder 43 via a reduction conveyor 59 (see FIG. 4) in the reduction cylinder 42. The second product is threshed again by the second processing cylinder 43 and then returned to the threshing device 5 to be re-sorted. The sawdust is sucked into the dust exhaust fan 36 and then discharged out of the machine from a discharge port (not shown) provided in the rear portion of the threshing device 5.

  On the rear side (feed end side) of the feed chain 6, a waste chain 44 as a waste transporting device is arranged. The waste (the grain that has been shattered) inherited from the rear end of the feed chain 6 to the waste chain 44 is discharged to the rear of the traveling machine body 1 in a long state, or the waste cutter 45 at the rear of the threshing device 5. After being cut to a short length as appropriate at, it is discharged to the rear of the traveling machine body 1.

(2). Next, the power transmission system of the combine will be described with reference to FIG.

  The power of the engine 17 is transmitted from one of the output shafts 51 protruding from the left and right sides of the engine 17 in two directions: the mission case 18, the pre-cutting processing device 3, and the threshing device 5. Other power of the engine 17 is transmitted from the other output shaft 51 to the discharge auger 8.

  The mission case 18 includes a hydraulic pump hydraulic motor type (HST type) straight-running hydraulic continuously variable transmission (not shown) and an HST type turning hydraulic continuously variable transmission (not shown). ing. The branching power from the output shaft 51 toward the transmission case 18 is transmitted to the straight-travel input shaft 52 of the straight-travel hydraulic continuously variable transmission, and the swing-input shaft 53 of the swing hydraulic continuously-variable transmission from the straight-travel input shaft 52. Power is transmitted to.

  Then, by adjusting the inclination angle of the rotary swash plate in each hydraulic pump according to the operation amount of the steering handle 10 disposed in the control unit 9, the discharge direction and the discharge amount of the pressure oil between the hydraulic pump hydraulic motors Is changed, and the rotational direction and rotational speed of the output shaft (not shown) for straight traveling or turning, and thus the driving speed and driving direction of the left and right traveling crawlers 2 are arbitrarily adjusted.

  The power transmitted to the straight output shaft 52 is also transmitted to the cutting PTO shaft 54 projecting from the transmission case 18, and then to the cutting pretreatment device 3 via the one-way clutch 55 and the cutting clutch 56. Communicated.

  The branching power from one of the output shafts 51 of the engine 17 toward the threshing device 5 is transmitted to the tang shaft 58 of the tang hu fan 34 via the threshing clutch 57. A part of the power transmitted to the tang shaft 58 is transmitted by belt and pulley transmission, the first conveyor 39 and the cereal conveyor 59, the second conveyor 41 and the reduction conveyor 60, the swing shaft 61 of the swing sorting mechanism 24, the exhaust. It is transmitted to the dust exhaust shaft 62 of the dust fan 36 and the exhaust cutter 45.

  Further, power is transmitted from the flange shaft 58 to the front end of the feed chain 6 and the fan shaft 65 of the auxiliary blower fan 35 via the FC clutch 63 and the feed chain shaft 64. That is, the feed chain 6 and the auxiliary blower fan 35 belong to the same system (series) of power transmission systems. The FC clutch 63 is located upstream of the feed chain 6 and the auxiliary blower fan 35 in this power transmission system.

  Further, the power from the Karatsu shaft 58 is also transmitted to the handle input shaft 66. The power transmitted to the handling cylinder input shaft 66 is branched and transmitted in two directions of the handling cylinder 23 and the dust feeding port processing cylinder 26. The branching power from the handling cylinder input shaft 66 to the handling cylinder 23 is transmitted to the rotating shaft 67 and the waste chain 44 of the handling cylinder 23. The branching power from the handling cylinder input shaft 66 to the dust feeding port processing cylinder 26 is transmitted to the rotating shaft 69 of the dust feeding port processing cylinder 26 via the processing cylinder input shaft 68. The branching power is transmitted from the processing motion input shaft 68 to the rotating shaft 70 of the second processing cylinder 43.

  The power directed from the output shaft 51 of the engine 17 to the discharge auger 8 is transferred to the inside of the vertical auger cylinder in the bottom conveyor 73 in the Glen tank 7 and the discharge auger 8 via the Glen input gear mechanism 71 and the auger clutch 72 for power interruption. Then, power is transmitted to the vertical conveyor 74 and then to the discharge conveyor 76 in the horizontal auger cylinder of the discharge auger 8 via the transfer screw 75.

(3). Next, the structure of the clamping guide member 81 above the feed chain 6 and its surroundings will be described with reference to FIGS.

  As shown in FIG. 5, a longitudinal chain rail 77 is fixed to one side portion (left side portion in the embodiment) of the threshing device 5. At the front end of the chain rail 77, a drive sprocket 78 that can rotate around the horizontal axis by power transmission from the feed chain shaft 64 (see FIG. 4) is pivotally supported. A driven sprocket 79 is supported at the rear end of the chain rail 77 so as to be rotatable about the horizontal axis. A feed chain 6 is wound around these sprockets 78 and 79. The feed chain 6 is configured to circulate clockwise in a side view of FIG.

  Above the feed chain 6 in the threshing device 5, a support frame 80 made of a square pipe that is long in the front-rear direction is arranged. On the lower surface side of the support frame 80, a holding guide member 81 that holds the stock side of the harvested cereal rice cake together with the feed chain 6 against the feed chain 6 is suspended so as to be movable up and down so as to come into contact with and separate from the feed chain 6. Has been.

  In the embodiment, flange portions 48 are respectively formed on one side portion (the left side portion in the embodiment) of the front and rear side plates of the downward opening substantially box-shaped upper surface cover body 47 constituting the handling chamber 46. The support frame 80 is attached to the flange portion 48 so that the position of the support frame 80 can be adjusted along the vertical direction in which the support frame 80 is in contact with (separated from) the feed chain 6.

  This is used to adjust the backlash or gap generated between the feed chain 6 and the sandwiching guide member 81 due to wear of the sandwiching guide member 81 due to the use of the combine for a long period of time as necessary. It is a configuration. That is, two guide groove holes 83 extending in the vertical direction are formed in the front and rear bracket plates 82 that are welded and fixed to the front portion (starting end side) and the rear portion (terminal end side) of the support frame 80, respectively. Then, the bolts 84 inserted into the respective guide groove holes 83 are screwed and fixed to the front and rear flange portions 48, so that the support frame 80 and the sandwiching guide member 81 are located in the guide groove holes 83 with respect to the feed chain 6. The mounting position can be adjusted within the range of the stroke (vertical length), and it cannot be pulled out sideways.

  The clamping guide member 81 includes a plurality (four in the embodiment) of downward-opening hook-shaped guide rods 85 facing the feed side of the feed chain 6, and slide arms 86 protruding upward from the respective guide rods 85. ing.

  The plurality of guide rods 85 are connected in series (in a single row) along the feed direction of the feed chain 6, and the adjacent guide rods 85 are connected to each other by lateral pivot pins 87. Therefore, the sandwiching guide member 81 as a whole can move up and down with the pivot pins 87 as fulcrums (see FIG. 7).

  This means that even if there is some variation in the amount of harvested cereal grains inherited from the pre-harvest processing device 3 to the feed chain 6, the clamping guide member 81 cooperates with the feed chain 6 to securely clamp the harvested cereal grains. This configuration is adopted for transporting toward the waste chain 44 while preventing the occurrence of spillage and transport disturbance. That is, even if the amount of the harvested cereal rice cake inherited by the feed chain 6 changes, the posture of each guide rod 85 can be changed to a meandering shape following the change.

  The slide arm 86 of each guide rod 85 penetrates the support frame 80 so as to be vertically slidable. A stopper pin 88 for retaining is inserted and attached to the upper end portion of the slide arm 86. A compression torsion spring 89 is fitted between the support frame 80 and the guide rod 85 in the outer periphery of the slide arm 86. The compression torsion spring 89 is stretched between the support frame 80 and each guide rod 85 so that the slide arm 86 is slid downward, so that the guide rod 85 approaches or contacts the feed side of the feed chain 6. It is energized.

  5 to 7, the first guide rods, the second guide rods,... Are arranged in the rearward arrangement order of the plurality of guide rods 85 from the frontmost portion, and each reference numeral Alphabets corresponding to the arrangement order are attached (for example, the first guide rod has a code of 85a, the second guide kit has a code of 85b, etc.). The symbols of the slide arm 86, the set pin 88, and the compression torsion spring 89 corresponding to each guide rod 85 are the same as the alphabets attached to the symbols of the guide rod 85 (first guide rod 85a). The symbol of the slide arm is 86a).

  At the rear part of the support frame 80, a waste clogging detection means 90 is attached for detecting whether or not a waste clogging has occurred between the feed chain 6 and the pinching guide member 81 from the lifted state of the pinching guide member 81. ing.

  The waste clogging detection means 90 of the embodiment is a limit switch having a downward convex sensor 91 that can come into contact with the upper surface of the fourth guide rod 85d located at the end, and the sensor 91 is the fourth guide rod 85d. The fourth guide rod 85d is greatly separated from the feed chain 6 (in a raised state) due to the clogging between the feed chain 6 and the clamping guide member 81 depending on whether or not it is in contact with the upper surface of the feed chain 6. It is set to detect whether or not. In this case, the waste clogging detecting means 90 is fixed to the L-shaped arm 92 that is bolted to the rear bracket plate 82 of the support frame 80 (see FIG. 6).

  As shown in FIG. 7, when a waste clogging occurs near the place where the feed chain 6 is connected to the waste chain 44 (near the fourth guide rod 85d), the clogged waste A pushes up the fourth guide rod 85d. Then, the clogging waste A is accumulated from the inheritance point and the upstream side of the conveyance, and as a result, the fourth guide rod 85d is further pushed up. As a result, the upper surface of the fourth guide rod 85d is detected as clogging clogging detection means. Contacting 90 sensors 91 detects the clogging of the waste.

  Further, when a waste clogging occurs at the location of the waste chain 44, the clogged waste A accumulates from here to the upstream side of the conveyance, and the clogged waste A accumulated in the rear part of the feed chain 6 becomes the first. The four guide rod 85d is pushed up. Accordingly, in this case as well, the upper surface of the fourth guide rod 85d can contact the sensing element 91 of the waste clogging detection means 90, and the clogging of the waste can be detected.

  A stopper member 93 that protrudes further downward from the lower surface of the bracket plate 82 is attached to the rear bracket plate 82 of the support frame 80. The stopper member 93 of the embodiment is made of a metal plate that is welded and fixed to a position behind the pivot pin 87 that connects the third guide rod 85c and the fourth guide rod 85d in the rear bracket plate 82.

  In the embodiment, a stepped portion 94 that is recessed downward is formed in a front portion of the upper surface of the fourth guide rod 85d. As shown in FIG. 7, when the slide arm 86d slides upward against the elastic restoring force of the compression torsion spring 89d and the fourth guide rod 85d reaches the highest position, the bottom of the stopper member 93 The end surface comes into contact with a downward concave step 94 formed in a front portion of the upper surface of the fourth guide rod 85d.

  Due to the presence of the stopper member 93, when the fourth guide rod 85d reaches the highest position, not only the further upward movement of the fourth guide rod 85d is prevented (restricted), but also the pivot of the rear end. The fourth guide rod 85d is also reliably prevented (restricted) from turning upward around the pin 87 (the one connecting the third guide rod 85c and the fourth guide rod 85d).

(4). Configuration of Safety Circuit Next, the configuration of the safety circuit 100 for stopping the driving of the engine 17 based on the sensing information of the exhaust clogging detection means 90 will be described with reference to FIG.

  The safety circuit 100 of the embodiment electrically connects a stop solenoid 102 as engine stop means provided in association with a fuel injection pump 101 with a governor that adjusts the fuel injection amount to the engine 17 and a battery 103. Is.

  Between the stop solenoid 102 and the battery 103 in the safety circuit 100, a key switch 104 for starting and stopping the engine 17 and an exhaust clogging detecting means 90 which is a limit switch are connected in series.

  The key switch 104 is a rotary switch configured to be switched to three terminal positions of an engine stop terminal 104a, an energization terminal 104b, and a start terminal 104c by rotating a predetermined key inserted into the keyhole. 1 is provided in one control unit 9.

  When the key switch 104 is turned from the engine stop terminal 104a to the position of the start terminal 104c beyond the energization terminal 104b, the starter (not shown) is activated and the engine 17 is started. When the hand is released from the key switch 104, the key switch 104 returns to the position of the energization terminal 104b by the elastic biasing force of a spring (not shown), and the drive of the engine 17 is maintained. When the key switch 104 is turned to the position of the engine stop terminal 104a, the drive of the engine 17 is stopped.

  The input terminal of the key switch 104 is connected to the output terminal + of the battery 103, and the energization terminal 104 b of the key switch 104 is connected to the input terminal 90 a of the discharge clogging detection means 90. The input terminal − of the battery 103 is grounded.

  The waste clogging detection means 90 (limit switch) is for operating on / off of the stop solenoid 102 (operation for energization and deenergization). One output terminal 90 b in the waste clogging detection means 90 is connected to one end of the stop solenoid 102. The other end of the stop solenoid 102 is grounded.

  An alarm lamp 105 and an alarm buzzer 106 are connected in parallel to the other output terminal 90 c of the waste clogging detection means 90. The alarm lamp 105 and the alarm buzzer 106 are arranged in the control unit 9 of the traveling machine body 1. The other ends of the alarm lamp 105 and the alarm buzzer 106 are both grounded.

  When the sensor 91 of the waste clogging detection means 90 is not in contact with the fourth guide rod 85d, the movable contact 90d attached to the input terminal 90a of the waste clogging detection means 90 is a spring (not shown). The state is held in contact with one output terminal 90b by an elastic biasing force. For this reason, the stop solenoid 102 is excited by energization from the battery 103 via the exhaust clogging detection means 90, and as a result, the fuel supply by the governor-equipped fuel injection pump 101 and the drive of the engine 17 are maintained.

  When the sensor 91 of the waste clogging detection means 90 is in contact with the fourth guide rod 85d, the movable contact 90d of the waste clogging detection means 90 is against the elastic biasing force of a spring (not shown). The other output terminal 90c is held in contact. For this reason, the energization to the stop solenoid 102 is interrupted, and the stop solenoid 102 is demagnetized. As a result, the fuel supply by the fuel injection pump 101 with the governor is stopped, and the driving of the engine 17 is surely stopped without turning off the key switch 104.

  In this case, since the movable contact 90d of the waste clogging detection means 90 is held in contact with the other output terminal 90c, the alarm lamp 105 is turned on or blinks at an appropriate period when the battery 103 is energized, and an alarm is generated. The buzzer 106 sounds and informs the operator of the clogging.

(5). Action and Effect According to the above configuration, the longitudinal support frame 80 disposed above the feed chain 6 in the threshing device 5 faces the feed chain 6 together with the feed chain 6 on the stock side of the harvested grain. A clamping guide member 81 to be clamped is attached so as to be able to move up and down so as to come into contact with and separate from the feed chain 6. The feed chain 6, the clamping guide member 81, and the like are mounted on the rear portion of the support frame 80 from the lifted state of the clamping guide member 81. Since the waste clogging detecting means 90 for detecting whether or not the waste clogging has occurred is attached, the waste clogging that has occurred at a location that could not be detected by the conventional configuration, that is, from the feed chain 6 is detected. The waste clogging generated in the vicinity of the place where the waste chain is connected to the waste chain 44 can be reliably detected by the waste clogging detection means 90.

  Further, when a waste clog occurs at the location of the waste chain 44, the clogged waste A accumulates from here to the upstream side of the conveyance, and as a result, the waste clog spreads to the vicinity of the inherited location. Therefore, also in this case, the fact of the waste clogging can be reliably detected by the waste clogging detection means 90.

  Therefore, there is an effect that the waste clogging in the waste transport system from the rear part of the feed chain 6 to the waste chain 44 can be surely grasped regardless of the occurrence location.

  Moreover, the support frame 80 not only serves to suspend the clamping guide member 81 so as to be movable up and down, but also serves as a mounting seat for the waste clogging detection means 90. There is no need to provide a separate member. This contributes to the suppression of the number of parts.

  By the way, when rattling or a gap occurs between the feed chain 6 and the sandwiching guide member 81 due to wear of the sandwiching guide member 81 due to the use of the combine for a long time, the sandwiching guide member 81 with respect to the feed chain 6 is It is necessary to adjust the position.

  In this respect, for example, if the evacuation clogging detection means 90 is attached to an appropriate location on the upper surface cover body 47, when the operation of adjusting the position of the clamping guide member 81 is not sufficient, the operation alone is not sufficient. Since the clogging detection means 90 must be aligned, it is troublesome and troublesome.

  On the other hand, as in the embodiment, the position of the support frame 80 to which the clamping guide member 81 and the waste clogging detection means 90 are attached can be adjusted to the threshing device 5 along the direction in which the feed chain 6 is contacted and separated. If the configuration of attaching to the feed chain 6 is adopted, the positional relationship between the clamping guide member 81 and the evacuation clogging detecting means 90 is fixed via the support frame 80, so that the position of the clamping guide member 81 with respect to the feed chain 6 is adjusted. If this is desired, it is only necessary to adjust the position of the support frame 80 with respect to the feed chain 6, and there is no need to adjust the positional relationship of the waste clogging detection means 90 with respect to the clamping guide member 81. Therefore, the labor for adjusting the position of the holding guide member 81 relative to the feed chain 6 can be remarkably reduced.

  Further, the sandwiching guide member 81 of the embodiment includes four guide rods 85 that are connected in series along the feed direction of the feed chain 6, and the adjacent guide rods 85 are respectively connected to each other by a lateral pivot pin 87. By being connected, each pivot pin 87 is used as a fulcrum so that it can move up and down.

  For this reason, even if the amount of harvested cereal grains inherited by the feed chain 6 changes, the posture of each guide bar 85 can be changed to a meandering shape following the change. By collaborating, the harvested cereals can be pinched securely.

  Further, as the waste clogging detection means 90, a limit switch having a sensor 91 that can be in contact with the upper surface of the fourth guide rod 85d located at the rear end is adopted, and the rearmost part of the support frame 80 is at its highest position. A stopper member 93 that restricts the upward movement of the fourth guide rod 85d and the upward rotation around the rearmost pivot pin 87 is attached to the upper surface of the fourth guide rod 85d when in the position.

  When such a configuration is adopted, in the state where the fourth guide rod 85d has reached the most elevated position, the presence of the stopper member 93 not only prevents the fourth guide rod 85d from being further lifted, but also the fourth guide rod 85d. It is possible to reliably prevent the 85d from turning upward around the rearmost pivot pin 87.

  Therefore, an excessive external force due to the pushing-up movement of the fourth guide rod 85d does not act on the sensing body 91 of the waste clogging detection means 90, so that the failure of the waste clogging detection means 90 due to the external force can be reliably ensured. Can be prevented.

(6). Others The present invention is not limited to the above-described embodiment, and can be embodied in various forms. For example, the waste clogging detection means 90 is not limited to a limit switch, and may be a strain gauge type sensor that detects the magnitude of the pushing force of the clamping guide member, a non-contact type proximity switch, or the like. The sandwiching guide member 81 may have a single long bar shape.

  Further, the engine 17 mounted on the traveling machine body 1 is not limited to a diesel engine, and may be a gasoline engine. In this case, the engine stop means is provided in association with an ignition plug for igniting the gas in the combustion chamber, so that ignition by the ignition plug is disabled by pressing the emergency operation means, and the driving of the gasoline engine is stopped. What is necessary is just to comprise.

  In addition, the configuration of each unit is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

It is a left view of a combine. It is a top view of a combine. It is side surface sectional drawing of a threshing apparatus. It is a skeleton figure of a power transmission system. It is a schematic side view which shows the relationship between a feed chain and a clamping guide member. It is an enlarged side view of a waste clogging detection means. It is a schematic side view which shows the clamping guide member in the state which the waste clogging produced. It is explanatory drawing of a safety circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Traveling crawler 3 Cutting pretreatment apparatus 5 Threshing apparatus 6 Feed chain 9 Control part 17 Engine 23 Handling cylinder 46 Handling room 47 Upper surface cover body 80 Support frame 81 Clamping guide member 85 Guide rod 86 Slide arm 87 Pivoting pin 89 Compression torsion spring 90 Exhaust / clogging detection means 91 Sensor 93 Stopper member 100 Safety circuit 102 Stop solenoid 103 Battery

Claims (3)

A combine equipped with a threshing device with a feed chain mounted on a traveling machine body, and a waste transporting device that inherits and transports the waste after threshing from the feed chain,
In the threshing apparatus, a holding guide member that holds the stock base side of the harvested cereal rice cake together with the feed chain against the feed chain is attached to the longitudinal longitudinal support frame disposed above the feed chain. It is attached so that it can move up and down
At the rear part of the support frame, a discharge clogging detecting means for detecting whether or not a discharge clogging has occurred between the feed chain and the clamping guide member is attached from the up-and-down state of the clamping guide member. Yes,
Combine. The support frame is attached to the threshing device such that the position of the support frame can be adjusted along a direction in which the support frame contacts and separates from the feed chain.
The combine according to claim 1. The sandwiching guide member includes a plurality of guide rods connected in series along the feed direction of the feed chain, and by connecting the adjacent guide rods with lateral pivot pins, While each pivot pin is a fulcrum, it is configured to be able to act up and down snakes,
The waste clogging detection means is a limit switch having a sensor capable of contacting the upper surface of a guide rod located at the rearmost position, and the rearmost guide when the support frame is at the highest position is disposed at the rear of the support frame. A stopper member is attached to the upper surface of the rod to restrict the upward movement of the rearmost guide rod and the upward rotation around the pivot pin.
The combine according to claim 1 or 2.

Images