JP2014223045A - Harvesting work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting work machine capable of reducing outside air suction resistance by causing dust and waste straw stuck to a dustproof net to fall by own weights when a supply part passes through a part where there are a lot of straw such as a livestock feed bale.SOLUTION: The harvesting work machine includes: an intake part 6 for taking crops of a field therein; a traveling machine body 2 on which an engine 10 is mounted; and a supply part 5 for supplying the engine 10 with cooling air. A shutter 100 is disposed between a dust removing body 52 installed on the supply part 5 and the engine 10, and the shutter 100 controls the intake of the outside air to be supplied to the engine 10.

Description

  The present invention relates to a harvesting machine including a take-in unit that takes in crops in a field, a traveling machine body on which an engine is mounted, and a supply unit that supplies cooling air to the engine.

  The harvesting machine is used for the purpose of harvesting crops while traveling in the field. In particular, a feed baler for cutting feed such as feed rice and pasture is used for the purpose of chopping feed grains with a cutting blade, forming into a cylindrical feed bale and releasing it. The feed bale is released from the feed baler in a state where the feed is bound by twain or net. Then, it is wrapped with a film using a wrapping machine, accumulated and stored in a storage building, fermented and matured, and used for livestock feed.

  However, since the feed culm is shredded, when the feed bale is released from the feed baler, the cereal and dust adhering to the feed bale are rolled up in the surrounding air due to the impact of the landing of the feed bale. . Therefore, when taking in outside air to cool the engine that drives the harvesting machine, there has been a problem that dust, sawdust, or the like wound in the air enters the machine.

  In order to solve such a problem, as shown in Patent Document 1, there is a technique in which a supply unit that takes in outside air as engine cooling air is provided on the side of the harvesting work machine, and a dust removing body is provided in the supply unit. Thereby, the outside air from which dust and soot are removed can be taken into the machine. Therefore, it is possible to cool the engine while preventing dust and soot from being introduced into the machine.

JP 2012-125191 A

  The feed baler cuts and takes in the feed, is formed into a columnar shape at the bale forming portion, and is discharged as a feed bale from the rear of the harvesting machine when the column becomes a predetermined size. After the feed bale is released, the feed is cut and taken up again. In other words, the feed baler alternately performs the cutting and intake of the feed and the release of the feed bale while self-running in the field.

  By moving the feed baler spirally from the outside to the inside in the field, the feed planted on the field can be efficiently cut, formed into a feed bale and released. However, since the feed baler moves in such a path, the feed bale discharged from the harvesting machine is always placed outside the position where the harvesting machine is traveling, and is located on the side of the harvesting machine. The provided supply section approaches the feed bale.

  Since the conventional technology is configured to always suck the outside air from the supply unit toward the engine, when the traveling machine approaches the feed bale or the like, the dust or scum adhering to the feed bale is sucked together with the outside air, and the dust Or dust will adhere to the dust removal body. As a result, there is a problem that the suction force of the outside air is reduced and problems such as overheating of the engine occur.

  That is, dust and swarf that are not sufficiently bound by the twain or net are attached to the feed bale released to the field. Furthermore, cereal grains that have not been used to form the feed bale are also released from the harvesting machine around the feed bale. For this reason, these dusts, swarf, etc. are wound up by natural wind or wind caused by the traveling of the harvesting machine, and dust, swarf, etc. are always floating in the air around the feed bale.

  Under such conditions, when outside air is sucked in from the supply unit in the vicinity of the feed bale or the like, the air around the feed bale moves toward the supply unit together with dust, sawdust, and the like. Air can pass through the dust remover, but dust, soot and the like adhere to the dust remover provided in the supply unit. Since the conventional technology is configured to always suck in the outside air from the supply unit toward the engine, the dust and debris once attached to the dust removing body are always put in the dust removing body by the suction force of the outside air from the outside of the machine to the engine. It will be attached. Therefore, as the outside air is sucked in from the supply unit near the feed bale or the like, more dust, swarf, or the like adheres to the dust removing body. As a result, the dust removing body is clogged, the supply of outside air to the engine is hindered, and the possibility of problems such as engine overheating increases.

  Accordingly, the present invention is intended to provide a harvesting machine that can prevent a decrease in the suction force of outside air and reduce the possibility of occurrence of problems such as engine overheating.

  In order to achieve the above object, a harvesting work machine according to a first aspect of the present invention includes a take-in unit that takes in crops in a field, a traveling machine body that mounts an engine, and a supply unit that supplies cooling air to the engine. In the harvesting machine provided, a shutter is disposed between the dust removing body installed in the supply unit and the engine, and intake of outside air supplied to the engine is controlled by the shutter.

  Invention of Claim 2 is a structure provided with the bale formation part which forms a bale using the crop taken in by the said intake part in the harvesting work machine of Claim 1, Comprising: A bale sensor for detecting the bail is provided, the shutter is operated based on the detection result of the bail sensor, and the intake of outside air can be interrupted.

  According to a third aspect of the present invention, in the harvesting machine according to the second aspect, the supply unit is provided with a rotatable dust removing body and a dust removing motor that rotationally drives the dust removing body. In conjunction with the interruption of the intake, the rotation of the dust removing body is interrupted.

  According to the invention described in claim 1, in a harvesting machine including an intake unit that takes in crops in a field, a traveling machine body that mounts an engine, and a supply unit that supplies cooling air to the engine, Since a shutter is arranged between the dust removing body installed in the supply unit and the engine, and the intake air supplied to the engine is controlled by the shutter, by closing the shutter, The intake of outside air can be stopped when the vehicle is approaching a place with a lot of grass such as feed bale. Dust and soot adhering to the dust removing body can be dropped by its own weight. The adhesion of dust and soot to the dustproof body can be reduced. The occurrence of problems such as engine overheating can be reduced.

  According to invention of Claim 2, it is a structure provided with the bale formation part which forms a bale using the crop taken in by the said intake part, Comprising: The bale sensor which detects the bale of a previous process is provided. Since the shutter is activated based on the detection result of the bale sensor and the intake of outside air can be interrupted, when the traveling body approaches a place with a lot of grass such as a feed bale, The outside air intake can be automatically stopped. Since it is not necessary to manually switch the shutter by the operator, the driving operation can be simplified.

  According to the invention described in claim 3, the supply unit is provided with a rotatable dust removing body and a dust removing motor that rotationally drives the dust removing body, and in conjunction with the interruption of the intake of outside air by the bail sensor, Since the rotation of the dust removing body is interrupted, the dust removing motor can be stopped, and the life of the dust removing motor can be improved or the noise can be reduced. Further, battery deterioration can be reduced.

It is a right view of the harvesting machine which is 1st Embodiment of this invention. It is the same plane enlarged view. It is a plane cross-sectional enlarged view of an engine and a wind tunnel. It is sectional drawing of the wind tunnel seen from diagonally back. It is sectional drawing of the traveling body in the vicinity of a rotation switch and a spring. It is an electric circuit diagram for rotating a shutter. It is a plane section enlarged view of an engine and a wind tunnel which shows a 2nd embodiment.

  The outline | summary of the harvesting machine which is 1st Embodiment of this invention is demonstrated using FIG.1 and FIG.2. FIG. 1 is a right side view of a harvesting machine according to a first embodiment of the present invention. FIG. 2 is an enlarged view of the same plane. In the following description, the left side in the forward direction of the harvesting machine is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side.

  The harvesting machine harvests crops, rolls the harvested cocoons, forms them into a cylindrical shape, and discharges them. As shown in FIGS. 1 and 2, the harvesting work machine 1 includes a traveling machine body 2, a traveling unit 3, an operation unit 4, a supply unit 5, an intake unit 6, a transport unit 7, and a bale forming unit 8.

  The traveling unit 3 is provided in the lower part of the traveling machine body 2. The traveling unit 3 includes a crawler type traveling device having a pair of left and right crawlers 31 and is configured to be able to travel the traveling machine body 2 in the forward or reverse direction.

  The operation unit 4 operates the traveling unit 3, the engine 10, the bale forming unit 8, and the like. The operation unit 4 is arranged on the right side of the front side of the traveling machine body 2 and on the right side of the engine 10. The operation unit 4 includes a steering handle 41, a driver's seat 42, a main transmission lever 43, and the like. The engine 10 is installed in front of the traveling machine body 2 and substantially in the center of the left and right.

  A handle column 44 is disposed in front of the operation unit 4 and substantially at the center of the left and right, and a steering handle 41 is disposed on the upper surface thereof. A driver seat 42 is disposed behind the steering handle 41. A supply unit 5 that supplies cooling air to the engine 10 is disposed on the right side of the driver's seat 42 that is the right side surface of the operation unit 4. The supply unit 5 is provided with a cooling air intake 51 for cooling the radiator 11. That is, the cooling air intake 51 is disposed on the right side surface of the operation unit 4. A side column 45 is disposed on the left side of the driver's seat 42, and a main transmission lever 43, a work clutch lever, and the like are disposed on the upper surface thereof. Below the driver's seat 42, a step 46 is provided at a height at which the driver who is seated can place his / her foot. As described above, the operation unit 4 is configured such that the driver is seated on the driver's seat 42 and the driver can operate the devices of the respective units with the operation tools.

  The supply unit 5 is provided with a dust remover 52. The dust removing body 52 prevents dust such as sawdust from passing therethrough. The dust removing body 52 is configured by a net or the like that does not allow dust such as sawdust to pass through. The dust removing body 52 is disposed in a cooling air intake 51 provided in the supply unit 5. The supply unit 5 is connected to the radiator 11 via the wind tunnel 53. Thereby, the dust removal body 52 is comprised so that dust can be removed from the cooling air sent to the radiator 11 from the outside.

  The take-in part 6 takes in forage crops in the field. The intake unit 6 includes a cover 61, a drive shaft 62, a flail blade 63, a fixed blade 64, and the like, and is disposed in front of the traveling machine body 2. The take-in portion 6 has a drive shaft 62 supported in a cover 61 so as to be rotatable in the horizontal direction. Flare blades 63 are radially arranged on the drive shaft 62 at predetermined intervals and at predetermined angles. A fixed blade 64 is disposed in the cover 61 so as to face the flail blade 63 in the horizontal direction. As a result, the flare blade 63 is configured to cut the forage crop, and to generate the transport wind toward the transport unit 7 by rotation and to jump the cut forage crop into the transport unit 7.

  The conveyance unit 7 conveys the forage crops cut by the intake unit 6 to the bale forming unit 8. The transport unit 7 includes a transport duct 71, a support arm 72, a swing shaft 73, an elevating cylinder 74, and the like, and is disposed on the front upper side of the traveling machine body 2.

  One end portion of the transport duct 71 is disposed so as to communicate with the rear upper side surface of the intake portion 6. The conveyance duct 71 is provided so as to extend rearward and upward from one side end portion, and is formed in a substantially inverted J shape in a side view. The other end portion of the transport duct 71 is inserted into the bail forming portion 8 from the front upper side surface of the bale forming portion 8 as a cut-off port 75 of the cut forage crop. Thereby, the conveyance part 7 is comprised so that the feed crop cut by the intake part 6 can be thrown in into the bale formation part 8 through the conveyance duct 71 by conveyance wind.

  On the rear side surface of the transport duct 71, a support arm 72 is provided substantially horizontally toward the rear. The rear end portion of the support arm 72 is rotatably supported by a swing shaft 73 provided on the traveling machine body 2 with the axial direction being the left-right direction. In addition, an elevating cylinder 74 is provided on the rear side surface of the transport duct 71 with the expansion / contraction direction being substantially vertical. One end of the elevating cylinder 74 is connected to the front end of the traveling machine body 2. Therefore, the transfer duct 71 and the intake portion 6 arranged at one end of the transfer duct 71 are configured to be rotatable up and down around the swing shaft 73 by the elevating cylinder 74 extending and contracting.

  The bale forming unit 8 forms the cut forage crop as a bale. The bale forming unit 8 includes a stationary housing 81, an opening / closing housing 82, a swing shaft 83, an opening / closing cylinder 84, a bail forming device 85, and the like, and is arranged at the rear portion on the traveling machine body 2 behind the engine 10. Is done.

  The bail forming portion 8 is configured by a fixed-side housing 81 and an open / close-side housing 82 in a front / rear split shape. The open / close side housing 82 is rotatably supported by a swing shaft 83 provided with a front upper end portion thereof provided at a rear upper end portion of the fixed side housing 81 with an axial direction set in a horizontal direction. An open / close cylinder 84 is provided on the upper side surface of the fixed housing 81 with the expansion / contraction direction as the front-rear direction. The open / close cylinder 84 is connected to the upper side surface of the open / close housing 82 with the expansion / contraction direction as the front-rear direction. Therefore, the open / close housing 82 is configured to be openable and closable about the swing shaft 83 by expanding and contracting the open / close cylinder 84. A transport duct 71 (the discharge port 75 of the transport unit 7) is inserted in the upper side surface of the front portion of the fixed housing 81 as a feed crop input port 86 for the cut crop.

  Inside the bail forming portion 8, a plurality of rotating rollers 87 that are rotatably supported with the axial direction as the left-right direction are disposed in a substantially C shape in a side view with the opening portion facing the insertion port 86. The bale forming device 85 is configured by the plurality of rotating rollers 87 arranged in this manner. The plurality of rotating rollers 87 are configured to be rotatable in the same direction by power transmitted from the engine 10 via a counter unit (not shown). Therefore, the crops thrown from the throwing port 86 are thrown into the bale forming device 85 and formed into a cylindrical shape by the plurality of rotating rollers 87. The newly introduced feed crop is wound around the outer diameter portion of the crop already formed in a columnar shape inside the bale forming device 85 and formed into a bale 13 having a predetermined outer diameter.

  A plurality of rotating rollers 87 constituting the rear portion of the bale forming device 85 are arranged in the open / close housing 82. That is, the rear portion of the bail forming device 85 is opened and closed as the opening / closing casing 82 is opened and closed. Thereby, the bale forming device 85 is configured to be able to discharge the formed bale 13 to the outside of the apparatus.

  As described above, in the harvesting work machine 1, the engine 10 is arranged at the front part of the traveling machine body 2 arranged at the upper part of the traveling unit 3, and the operation unit 4 is arranged on the right side thereof. And the bail formation part 8 is arrange | positioned at the rear part of the traveling body 2. In this way, the harvesting work machine 1 transmits the power of the engine 10 to the traveling unit 3, the bail forming unit 8, and the like by operating the operation tools in the operation unit 4, and the traveling unit 2 is operated by the traveling unit 3. The bale forming unit 8 can form and release the bale 13 while traveling.

  Next, a configuration for controlling intake of outside air supplied to the engine will be described with reference to FIGS. 2 to 5. FIG. 3 is an enlarged plan sectional view of the engine and the wind tunnel. FIG. 4 is a cross-sectional view of the wind tunnel viewed obliquely from the rear. FIG. 5 is a cross-sectional view of the traveling machine body in the vicinity of the rotary switch and the spring. The upper part of FIG. 5 is a cross-sectional view of the traveling machine body in the vicinity of the rotary switch. The lower part of FIG. 5 is a cross-sectional view of the traveling machine body in the vicinity of the spring.

  As shown in FIGS. 2 and 3, the engine 10 is installed near the front center of the traveling machine body 2, and the radiator 11 is installed on the right side of the engine 10, that is, on the cooling fan 12 side. The radiator 11 cools the cooling water circulating through the main body of the engine 10 with cooling air.

  The wind tunnel 53 constitutes a passage for guiding cooling air from the outside to the radiator 11. The wind tunnel 53 is disposed on the right side of the radiator 11 and below the driver seat 42 of the operation unit 4. The supply unit 5 and the radiator 11 are connected via a wind tunnel 53, and are configured such that cooling air from outside the apparatus is sent to the radiator 11 by the rotation of the cooling fan 12.

  A dust removing body 52 is installed in the supply unit 5 and in the vicinity of the intake port 51. In the following description, the dust removing body 52 that can be rotated by the dust removing motor 54 will be described. However, the dust removing body 52 is fixed to the cooling air intake 51 provided in the supply unit 5. It doesn't matter.

  The dust removing body 52 is fixed to the rotating shaft 55. A gear (not shown) is fixed to the left end of the rotating shaft 55. A dust removal motor 54 that rotates the dust removal body 52 is installed on the left side of the dust removal body 52. The dust removal motor 54 is supported by a support body (not shown). A gear (not shown) is fixed to the output shaft of the dust removal motor 54 and meshes with a gear fixed to the rotation shaft, so that the dust removal motor 54 and the rotation shaft 55 are linked to each other. Therefore, the dust removing body 52 is rotated by the operation of the dust removing motor 54.

  As shown in FIG. 3, the outside air taken from outside the apparatus flows in the direction of the dotted arrow and passes through the dust removing body 52. As a result, the air from which dust and soot are removed flows into the wind tunnel 53. The air from which dust and soot are removed reaches the radiator 11 and cools the cooling water circulating through the engine 10.

  A shutter 100 is installed between the supply unit 5 and the engine 10. The shutter 100 includes a rotation shaft 101, a shielding plate 102, and a stop shaft 103. As shown in FIG. 4, the shielding plate 102 is fixed to the side surface of the rotating shaft 101 so as to cover the inside of the wind tunnel 53. The shielding plate 102 is made of an iron plate that does not allow outside air to pass through. The stop shaft 103 is a side surface of the rotating shaft 101 and is fixed above the shielding plate 102.

  The rotation shaft 101 of the shutter 100 is linked to the rotation motor 104 through a gear (not shown). By the operation of the rotation motor 104, as shown in FIG. 3, the rotation shaft 101 rotates clockwise (solid arrow direction) or counterclockwise (two-dot chain arrow direction). As the rotation shaft 101 rotates, the shielding plate 102 and the stop shaft 103 rotate about the rotation shaft 101 as a rotation center. A limit switch 105 is installed on the rotation locus of the stop shaft 103. When the stop shaft 103 pushes the limit switch 105, the rotary motor 104 is stopped.

  The shutter 100 is a state in which the flow of the cooling air taken in from the supply unit 5 is interrupted by the operation of the rotation motor 104 (a state indicated by a two-dot chain line in FIG. 3. A state in which the cooling air taken in from the supply unit 5 is supplied to the radiator 11 by rotating the shutter 100 clockwise around the rotation shaft 101 about the rotation shaft 101 (in a state indicated by a solid line and hatching in FIG. 3). In the following description, it is simply referred to as “supply position”. In addition, two limit switches 105 and 105 for stopping the rotary motor 104 when the shutter 100 reaches the blocking position or the supply position are arranged.

  A detection unit 110 is provided at the lower right side of the supply unit 5. The detection unit 110 is for detecting a bale. The detection unit 110 includes a bale sensor 111, a rotation switch 112, and a spring 113.

  The bale sensor 111 is for detecting the bale 13. 2 and 3, the bail sensor 111 shows a contact type, but a non-contact type bale sensor may be used as long as the bail 13 can be detected. The rotation switch 112 is for operating the rotation motor 104. The rotation switch 112 protrudes from the traveling machine body 2.

  As shown in FIG. 3, the bail sensor 111 projects from the traveling machine body 2 and rotates clockwise or counterclockwise with the bail sensor rotation fulcrum 114 as a rotation center. The bail sensor rotation fulcrum 114 is fixed to the traveling machine body 2 so that the bail sensor 111 can rotate. When the bale sensor 111 comes into contact with the bail 13, it rotates clockwise and moves inward. The rotation switch 112 is for operating the rotation motor 104, and is projected on the movement locus of the bail sensor 111 on the right side of the traveling machine body 2, as shown in the upper part of FIG. As shown in FIG. 6, the rotary switch 112 and the rotary motor 104 are connected by an electric wire, a switch, or the like. When the bale sensor 111 moves inward and the rotation switch 112 is pressed, the rotation motor 104 is activated. The rotation shaft 104 rotates clockwise by the operation of the rotation motor 104, and the stop shaft 103 presses the limit switch 105 when the shutter 100 reaches the blocking position. Therefore, the rotation motor 104 stops and the shutter 100 is supplied to the supply unit. The cooling air taken in from 5 is shut off.

  When the bail sensor 111 passes through the bail 13 due to the movement of the traveling machine body 2, the position of the bail sensor 111 is returned to the original position by the spring 113. That is, the bail sensor 111 rotates counterclockwise about the bail sensor rotation fulcrum 114 as a rotation axis and moves outward. As shown in FIG. 6, when the position of the bail sensor 111 returns to the original position, the rotation motor 104 rotates in the reverse direction, and the rotation shaft 101 rotates clockwise. Since the stop shaft 103 pushes the limit switch 105 when the shutter 100 reaches the supply position, the rotation motor 104 stops, and the shutter 100 supplies the radiator 11 with good cooling air taken from the supply unit 5. To stop.

  With the above configuration, outside air as cooling air for the engine 10 is supplied from the supply unit 5 through the wind tunnel 53 to the engine 10 during normal traveling. When the traveling machine body 2 approaches the feed bale 13, the shutter 100 rotates toward the blocking position and prevents dust, scum, etc. adhering to the feed bale together with outside air from being carried to the supply unit 5 or the dust removing body 52. be able to. Furthermore, when the traveling machine body 2 passes through the feed bale 13, the shutter 100 rotates toward the supply position, and the outside air as cooling air for the engine 10 can be supplied to the engine 10.

  Dust and soot adhering to the dust removing body 52 are discharged out of the apparatus by the discharge unit 120. The discharge unit 120 includes a suction duct 121, a connection duct 122, a discharge duct 123, and a suction fan 124.

  The suction duct 121 sucks dust and soot adhering to the outer surface of the dust removing body 52. The suction duct 121 is disposed so as to approach the outer surface of the dust removing body 52 from the rotation center of the dust removing body 52, that is, toward the front from the rotation shaft 55. The suction duct 121 is configured by opening a surface close to the dust removing body 52.

  The connection duct 122 connects the suction duct 121 and the discharge duct 123. The connection duct 122 is disposed in front of the wind tunnel 53. The discharge duct 123 discharges outside air containing dust and soot from the machine. The outside air outlet 125 is provided to face forward.

  The suction fan 124 sucks air and dust. The suction fan 124 is fixed to a fan rotation shaft 124 a that is rotatably supported by the discharge duct 123. The fan rotation shaft 124 a rotates by transmitting the power of the engine 10 through the V-belt 14 and the pulley 15. That is, the suction fan 124 is rotated by the transmission of the power of the engine 10 and is configured to be able to suck air and dust from the suction duct 121 by making the inside of the discharge duct have a negative pressure.

  With the above configuration, the dust and soot adhering to the dust removing body 52 pass through the suction duct 121, the connection duct 122, and the discharge duct 123 in this order by the rotation of the suction fan 124, and in the direction of the dashed line arrow as shown in FIG. Discharged.

  An electric circuit for controlling intake of outside air supplied to the engine will be described with reference to FIG. FIG. 6 is an electric circuit diagram for rotating the shutter.

  As shown in FIG. 6, when the bail 13 is detected or not detected by the bail sensor 111, the connection to the supply contact 130 for operating the rotary motor 104 to rotate the shutter 100 to the supply position and the shutter 100 to the cutoff position are performed. A rotation switch 112 is provided for switching between connection to a cut-off contact 131 for operating the rotation motor 104 for rotation. Two normally closed switch type limit switches 105 and 105 for stopping the rotary motor 104 by contact with the stop shaft 103 are provided. A supply relay 132 for rotating the shutter 100 clockwise so as to install the shutter 100 at the supply position is provided. A cutoff relay 133 is provided for rotating the shutter 100 counterclockwise so that the shutter 100 is installed at the cutoff position.

  As shown in FIG. 6, the supply relay 132 is a normally-open switch type supply relay switch 132 a, 132 b that operates the rotary motor 104 so that the shutter 100 rotates toward the supply position, and the shutter 100 is operated by the operation of the rotary motor 104. Has a normally-open switch type self-holding switch 132c that operates the rotary motor 104 until it reaches the supply position. The cutoff relay 133 is a normally-open switch type cutoff relay switch 133a, 133b that operates the rotary motor 104 to rotate the shutter 100 toward the cutoff position, and the shutter 100 reaches the cutoff position by the operation of the rotary motor 104. Up to now, a normally open switch type self-holding switch 133c for operating the rotary motor 104 and a normally closed switch type dust removing motor operating switch 133d for switching the operation and stop of the dust removing motor 54 are provided.

  A supply relay 132 and a limit switch 105 arranged in series are connected to the supply contact 130. Supply relay switches 132 a and 132 b and a self-holding switch 132 c are connected to the supply relay 132. The interrupting contact 131 is connected to an interrupting relay 133 and a limit switch 105 arranged in series. The cutoff relay 133 is connected to cutoff relay switches 133a and 133b, a self-holding switch 133c, and a dust removal motor operation switch 133d.

  When the key switch 135 connected to the battery 134 is turned on, the dust removal motor 54 connected to the dust removal motor operation switch 133d rotates. When the bail sensor 111 is not in contact with the bail 13, the rotary switch 112 is in contact with the supply contact 130. At this time, when the stop shaft 103 (shutter 100) has reached the supply state, the rotary shaft 104 is not operating because the stop shaft 103 is pressing the limit switch 105. When the stop shaft 103 (shutter 100) does not reach the supply state, the supply relay 132 is energized because the stop shaft 103 is not pressing the limit switch 105. As a result, the supply relay switches 132a and 132b and the self-holding switch 132c are turned on, and the rotation motor 104 operates to rotate the shutter 100 clockwise. When the shutter 100 reaches the supply state, the limit switch 105 is pushed by the stop shaft 103, and the rotary motor 104 is stopped.

  When the key switch 135 is on and the bail sensor 111 is in contact with the bail 13, the rotary switch 112 is in contact with the cutoff contact 131. At this time, when the stop shaft 103 (shutter 100) has reached the shut-off state, the stop shaft 104 is pressing the limit switch 105, so the rotary motor 104 does not operate. When the stop shaft 103 (shutter 100) has not reached the shut-off state, the stop shaft 103 is not pressing the limit switch 105, and therefore the shut-off relay 133 is energized. As a result, the cutoff relay switches 133a and 133b and the self-holding switch 133c are turned on, and the rotary motor 104 operates to rotate the shutter 100 counterclockwise. At the same time, the dust removal motor operation switch 133d is turned off, and the dust removal motor 54 is stopped. When the shutter 100 reaches the shut-off state, the limit switch 105 is pushed by the stop shaft 103, and the rotary motor 104 is stopped.

  Therefore, when the bail 13 is detected by the bail sensor 111 during traveling, the rotary motor 104 rotates the shutter 100 counterclockwise until the shutter 100 reaches the shut-off state, and the bail sensor 111 passes through the bail 13. When the bail sensor 111 no longer detects the bail 13, the rotary motor 104 is configured to rotate the shutter 100 clockwise until the shutter 100 reaches the supply state.

  The outline | summary of the harvesting machine which is 2nd Embodiment of this invention is demonstrated using FIG. FIG. 7 is an enlarged plan sectional view of the engine and the wind tunnel showing the second embodiment. In addition, in FIG. 7, what has the same effect as 1st Embodiment of this invention shown in FIG. 3 etc. is represented with the same code | symbol.

  As shown in FIG. 7, the second embodiment of the present invention is provided in the wind tunnel 53 in a state where the rotating shaft 141 is rotatable. The rotation shaft 141 of the shutter 140 is linked to the rotation motor 104 through a gear (not shown). By the operation of the rotary motor 104, the rotary shaft 141 rotates clockwise or counterclockwise. As the rotary shaft 141 rotates, the shielding plate 142 and the stop shaft also rotate clockwise or counterclockwise. Therefore, the shutter 140 rotates clockwise or counterclockwise as indicated by a solid line arrow. Also, two limit switches (not shown) are installed near the supply position and blocking position of the shutter 140.

  A second dust removing body 143 is installed on the rear side of the wind tunnel 53. When the shutter 140 is in the blocking position, the second dust removing body 143 removes dust and soot from the outside air introduced from the rear side of the wind tunnel 53, and removes the outside air from which dust and soot are removed from the radiator. 11 for supplying to the vehicle.

  When the shutter 140 is in the supply position, the outside air is supplied to the radiator 11 through the dust removing body 52. When the shutter 140 is in the blocking position, the outside air is supplied to the radiator 11 through the second dust removing body 143.

  With the above configuration, when the bail 13 is detected by the bail sensor 111, the rotation motor 104 operates and the shutter 140 rotates counterclockwise. When the shutter 140 reaches the blocking position, the rotary motor 104 is stopped, and the intake of outside air from the supply unit 5 can be interrupted. At that time, the outside air is taken in from behind the wind tunnel 53 via the second dust removing body 143. In addition, when the bail sensor 111 passes through the bail 13 and the bail sensor 111 no longer detects the bail 13, the rotation motor 104 operates and the shutter 140 rotates clockwise. When the shutter 140 reaches the supply position, the rotary motor 104 is stopped, and the intake of outside air from the supply unit 5 can be resumed.

  As is clear from the above description and FIGS. 1 to 7, the intake unit 6 that takes in crops in the field, the traveling machine body 2 on which the engine 10 is mounted, and the supply unit 5 that supplies cooling air to the engine 10. The shutter 100 (shutter 140) is disposed between the dust removing body 52 installed in the supply unit 5 and the engine 10, and the engine 10 is moved to the engine 10 by the shutter 100 (shutter 140). Since the intake air to be supplied is configured to be controlled, the shutter 100 (shutter 140) is closed to allow the outside air to be taken in when the traveling machine body 2 approaches a place with a lot of grass such as a feed bale. Can be canceled. Since the intake of outside air is stopped, dust and soot adhering to the dust removing body 52 can be dropped by its own weight. The adhesion of dust and soot to the dustproof body 52 can be reduced. The occurrence of problems such as overheating of the engine 10 can be reduced. Therefore, when it moves spirally from the outside to the inside in the field, the dust adhered to the feed bale even when approaching the feed bale arranged outside the position where the harvesting machine is traveling It is possible to suppress the intake of waste and sawdust from the supply unit together with the outside air. The feed can be cut efficiently without detouring around the feed bale.

  As is clear from the above description and FIGS. 1 to 7, the structure includes the bale forming unit 8 that forms the bale 13 using the crop taken in by the taking-in unit 6, and the bale in the previous step 13 is provided, the shutter 100 (shutter 140) is operated based on the detection result of the bail sensor 111, and the intake of outside air can be interrupted. When the traveling machine body 2 approaches a large number of places, the intake of outside air can be automatically stopped. Since it is not necessary to manually switch the shutter 100 (shutter 140) by the operator, the driving operation can be simplified.

  As is clear from the above description and FIGS. 1 to 7, the supply unit 5 is provided with a rotatable dust removing body 52 and a dust removing motor 54 that rotationally drives the dust removing body 52. Since the rotation of the dust removing body 52 is interrupted in conjunction with the interruption of the intake, the dust removing motor 54 can be stopped, and the life of the dust removing motor 54 can be improved or the noise can be reduced. Further, deterioration of the battery 134 can be reduced.

DESCRIPTION OF SYMBOLS 1 Harvesting work machine 2 Traveling machine body 5 Supply part 6 Take-in part 8 Bale formation part 10 Engine 13 Bale 52 Dust removal body 54 Dust removal motor 100, 140 Shutter 111 Bale sensor

Claims (3)

In a harvesting machine including an intake unit for taking in crops in a field, a traveling machine body equipped with an engine, and a supply unit that supplies cooling air to the engine,
A harvesting machine configured to dispose a shutter between the dust removing body installed in the supply unit and the engine, and to control intake of outside air supplied to the engine by the shutter.   A structure including a bale forming unit that forms a bale by using the crop taken in by the take-in unit, wherein a bale sensor that detects a bale in a previous process is provided, and the shutter is based on a detection result of the bale sensor. The harvesting work machine according to claim 1, wherein the harvesting work machine is capable of operating and taking in outside air can be interrupted.   The supply unit is provided with a rotatable dust remover and a dust removal motor that rotationally drives the dust remover, and the rotation of the dust remover is interrupted in conjunction with the interruption of outside air intake by the bale sensor. The harvesting machine according to claim 2.

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