JP2013081376A - Combined harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined harvester equipped with a threshing portion in which a threshing clutch is disengaged to stop the threshing portion, when it is determined by a determining means that an unloading auger is in a state of an unloading work.SOLUTION: The engagement or disengagement state of a grain unloading clutch is detected with a grain unloading clutch detection means. When the engaging state of a grain-unloading clutch is detected by the grain-unloading clutch detection means, and it is determined that a unloading auger is operated by the unloading auger operation state determination means, the threshing clutch is disengaged with a clutch operation device to stop the thresher 7.

Description

  The present invention relates to a combine equipped with a threshing unit for threshing harvested cereals, and more particularly to control of a threshing apparatus during discharge work by a discharge auger.

  In general, a combine includes a pre-processing unit that harvests cereals, a threshing unit that threshs cereals harvested by the pre-processing unit, a grain tank that stores grains threshed by the threshing unit, and a And a discharge auger for connecting / disconnecting power transmission to the threshing section and a discharge clutch for connecting / disconnecting power transmission to the discharge auger.

  By the way, in the harvesting work by the combine, after the harvesting work is finished, the grain stored in the Glen tank is discharged to a truck bed with a discharge auger and the grain is carried out from the field. Then, after stopping the combine at the work position, the worker cuts the threshing clutch to stop the threshing portion, connects the discharge clutch, operates the discharge auger, and starts the discharge work. However, the worker may perform the discharging operation while the threshing portion is operated. In such a case, straw scraps etc. (No. 3 scattering) scattered with the sorting wind of the threshing portion are discharged from the rear of the machine body to the predetermined location. Not only does it look good, but it may hinder the next farming.

  Conventionally, a clutch operating device has been devised that can connect and disconnect a mowing clutch and a threshing clutch by operating one work system clutch lever (see Patent Document 1). This clutch operating device has a single sector gear that can be rotated in accordance with the drive of the transmission motor, and a wire is connected to each of the tension arm of the mowing clutch and the tension arm of the threshing clutch from different directions, The mowing clutch and the threshing clutch are connected and disconnected at different timings depending on the rotational position of the sector gear. Specifically, by turning the sector gear from the initial position to the intermediate position (second position), with the mowing clutch maintained OFF, only the threshing clutch is turned ON, and the end position (the first position from the intermediate position of the sector gear). By turning to the third position), the mowing clutch is turned on while the threshing clutch is kept on.

JP 2006-77959 A

  Although the clutch operating device described in Patent Document 1 can connect and disconnect the threshing clutch and the mowing clutch with one working system clutch lever, the operator himself / herself connects the grain discharging clutch when performing the discharging operation. Since it is necessary to operate the discharge auger, for example, the operator may forget to turn off the threshing clutch and operate the threshing device, and the grain discharge clutch may be connected. There is a case where it accumulates in a predetermined place.

  Then, this invention aims at providing the combine which solved the said subject by cut | disconnecting a threshing clutch and stopping a threshing part, when a judgment means judges that a discharge auger is in the state of discharge work. It is what.

The present invention includes a threshing section (7) for threshing the harvested cereal, a Glen tank for storing the grains threshed by the threshing section (7), and a discharge auger for discharging the grains in the Glen tank out of the machine. (1) in a combine (1) comprising:
A threshing clutch (58) for connecting and disconnecting power transmission to the threshing section (7);
Detection means (67, 69, 70) for detecting a situation where the discharge auger (9) enters an operating state;
Determination means (73) for determining that the discharge auger is in an operating state based on the detection means (67, 69, 70);
Stop means (52) which cuts off the threshing clutch (58) and stops the operation of the threshing part (7) when the judging means (73) judges that the discharge auger (9) is in an operating state. And comprising.

  When the stop means (52) is in a state of stopping the threshing part (7), and the threshing clutch is (58) entered by an artificial operation, the stop state of the stop means (52) is released, The said threshing part (7) is made into an operation state.

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not have any influence on description of a claim by this.

  According to the first aspect of the present invention, when the judging means judges that the discharge auger is in the operating state based on the detecting means, the threshing clutch is cut by the stopping means to stop the operation of the threshing portion. It is possible to prevent the discharge operation from being performed while operating the unit, and it is possible to prevent the third scattering etc. from being discharged from the machine body and accumulated during the discharge operation.

  According to the invention which concerns on Claim 2, even if a threshing part is stopped by a stop means by the action | operation of a discharge auger, since a stop state can be cancelled | released by manual operation and a threshing part can be operated, Threshing work can also be performed, and the degree of freedom of work can be increased.

The left view of the combine which concerns on embodiment of this invention. The schematic diagram which showed the internal structure of the threshing part of a combine. The top view which showed the driving | operation operation part of the combine. It is a figure which shows the clutch lever with which a driving | operation operation part is equipped, Comprising: (A) is the state which the threshing clutch and the mowing clutch cut | disconnected, (B) is the state which connected only the threshing clutch, (C) is a state where the threshing clutch and It is a figure which shows the state in which the mowing clutch was connected. The schematic diagram which shows the clutch operation apparatus with which a combine is provided. The block diagram of the control part of a combine. The power transmission diagram which shows the power transmission of a combine. The flowchart figure which shows control of the threshing clutch of a combine. The flowchart figure which shows control of the threshing clutch of a combine.

  Hereinafter, embodiments of a combine according to the present invention will be described with reference to the drawings. The structure of the combine 1 will be described. The combine 1 is a general-purpose combine and has a body 3 supported by a traveling unit 2 that is a pair of left and right crawler traveling devices as shown in FIG. In front of the machine body 3, a pre-processing unit 5 for cutting grain in the field is provided so as to be able to move up and down, and behind the pre-processing unit 5 is a driving operation for an operator to operate a combine. Part 6 is provided. Behind the operation unit 6, a threshing unit 7 for threshing cereals and a grain tank (not shown) for storing the grains threshed by the threshing unit 7 are juxtaposed, and the grains in the grain tank are removed from the machine. A discharge auger 9 for discharging is provided.

  As shown in FIG. 2, the threshing unit 7 is composed of a threshing device 7 provided with a handling chamber 10. The threshing unit 7 supplies the conveyed cereal into the handling chamber 10 in front of the handling chamber 10. A supply port 11 is provided. Further, the handling chamber 10 has a handling cylinder 12 for threshing cereals and a selection unit 13 for selecting the grains threshed by the handling cylinder 12, and the handling cylinder 12 is rotatable in the handling chamber 10. It is supported. The front portion 12 a of the handling cylinder 12 is formed in a substantially conical shape, and a handling tooth 15 formed in a spiral shape is provided on the outer periphery of the handling cylinder 12. The teeth 15 are mainly composed of a helical plate 15a for conveying cereals and teeth 15b that are attached to the plates 15a at equal intervals and handle cereals.

  A receiving net 17 is provided below the handling cylinder 12, and a sorting unit 13 is provided below the receiving net 17. The sorting unit 13 is provided with a swing sorting body 25 including a swing moving plate 19, a chaff sheave 20, a rack 21, a stroll rack 22, a grain sheave 23, and the like. A Chinese fan 26 is provided. Behind the tang fan 26 is disposed in a first cerealing device (not shown) for conveying the grains to the grain tank so that the first spiral 29 for conveying the first thing is orthogonal to the traveling direction. . A turbofan 30 is provided behind the first spiral 29, and behind the turbofan 30, the second product mixed with straw scraps, spiked grains and the like is insufficiently sorted and returned to the handling room. In a second reduction device (not shown), a second spiral 32 that conveys the second product is disposed so as to be orthogonal to the traveling direction.

  As shown in FIG. 3, the driving operation unit 6 is provided with a driving seat 35 for a driver to sit on, and a driving panel 36 is provided in front of the driving seat 35. A steering lever 37 for steering the combine 1 is provided on the right side of the driving panel 36, and a display panel 39 for displaying various instruments is provided on the left side of the steering lever 37. ing. An operation panel 40 is provided on the left side of the driver seat 35, and a main transmission lever 41 that performs a shift of the combine 1 is provided in front of the operation panel 40. Behind the main transmission lever 41, there is provided a cutting / threshing clutch operating lever (hereinafter simply referred to as cutting / declutching lever) 42 that can be switched to three positions A, B, and C. On the rear side, a grain discharge switch 43 for connecting and disconnecting the grain discharge clutch 44 (see FIG. 7) is provided.

  As shown in FIG. 4, a knob 45 is provided on the one end side of the mowing / declutch lever 42 to make it easier for the driver to grip the mowing / declutch lever 42, and on the other end side, A proximal end 46 is provided. The base end portion 46 is supported by a shaft 47, and the mowing / declutch lever 42 is provided to be rotatable in the front-rear direction (positions A, B, C). The base end portion 46 is provided with a cam 49, and the cam 49 has projections 49a and 49b, respectively. The threshing clutch switch 50 and the reaping clutch switch 51 are disposed at positions facing each other so as to sandwich the base end portion 46, and the threshing clutch switch 50 and the reaping clutch switch 51 are connected to the mowing / declutch lever detecting means 66. It is composed. Further, the protrusions 49a and 49b are provided so as to be able to come into contact with the threshing clutch switch 50 and the reaping clutch switch 51 by the rotation of the base end portion 46, and by this contact, the threshing clutch 58, which will be described later, is disconnected. Thus, the clutch operating device 52 which is a stopping means for stopping the threshing device 7 is interlocked.

  As shown in FIG. 5, the clutch operating device 52 includes a bracket 53 for fixing the clutch operating device 52 to the combine 1. The bracket 53 is provided with a sector gear 56 rotatably supported by a shaft 61, and the sector gear 56 is an output gear supported by an output shaft of a mowing / declutching motor 71 fixed to the bracket 53. 59 is engaged. The bracket 53 is provided with a potentiometer 60 serving as a cutting / threshing clutch detecting means, and wires 54, 55 from different directions are connected to the sector gear 56, respectively. The wires 54 and 55 are connected to the tension arm 57a of the reaping clutch 57 that connects and disconnects the power transmission to the pretreatment unit 5 and the tension arm 58a of the threshing clutch 58 that connects and disconnects the power transmission to the threshing device 7, respectively. The tension arms 57a and 58a and the rotation of the sector gear 56 are configured to be linked via the wires 54 and 55.

  As shown in FIG. 6, a control unit provided in the combine 1 that controls the cutting, threshing, and discharging operations includes a cutting / declutch lever detecting means 66, a cutting / threshing unit, as shown in FIG. While the clutch detection means 60 and the grain discharge switch 43 are connected, the grain discharge clutch detection means 67, the pre-processing height potentiometer 69, which are detection means for detecting the situation where the discharge auger enters the operating state, and An auger turning potentiometer 70 and the like are connected, and on the output side, a mowing / declutching motor 71, a grain discharge clutch motor 72, and the like are connected. A signal is input to the control unit 65 from various sensors on the input side, and the control unit 65 is configured to output a signal to each motor connected to the output side based on the signal. The control unit 65 includes a microcomputer (hereinafter simply referred to as a microcomputer), and includes a discharge auger operating state determination unit 73 that is a determination unit that determines that the discharge auger 9 is in a working state.

  Next, the operation of the combine 1 configured as described above will be described. In order to perform the grain cutting operation on the field, the operator gets on the combine 1 and then turns on the ignition of the combine 1 to start the engine 8 (see FIG. 7). The operator moves the combine 1 to the field where the cutting operation is performed, and then starts the cutting operation. At this time, the operator operates the mowing / declutching lever 42 to operate the pretreatment unit 5 and the threshing unit 7 (STEP 1 and STEP 2 in FIG. 8, hereinafter, simply SOO).

  When the operator sets the cutting / declutching lever 42 to the position C (see FIG. 3), the base end portion 46 of the cutting / declutching lever 42 rotates, and each of the protrusions 49a and 49b switches the threshing clutch switch. 50 and the cutting clutch switch 51 (see FIG. 4C). By this contact, a signal is input from the cutting / clutch release lever detecting means 66 to the microcomputer 65, and a signal is output from the microcomputer 65 to the cutting / clutching motor 71 based on the signal. By this signal, the output shaft of the mowing / declutching motor 71 rotates and the output gear 59 rotates. The sector gear 56 that meshes with the output gear 59 is rotated to the end position by the rotation of the output gear 59 (see FIG. 5), and the wires 54 and 55 are pulled in the rotation direction of the sector gear 56. In conjunction with this, the tension arms 57a, 58a are pulled, and the transmission belt (not shown) with which the tension arms 57a, 58a abut is tensioned, so that the reaping clutch 57 and the threshing clutch 58 are in a connected operation state. The power from the engine 8 is transmitted to the pre-processing unit 5 and the threshing device 7, and the pre-processing unit 5 and the threshing device 7 operate (S3).

  The pre-processing unit 5 cuts the grain while rotating the reel 4 (see FIG. 1). The harvested cereal is conveyed to the threshing device 7 by the feeder 14 and supplied into the handling chamber 10 from the supply port 11 of the threshing device 7. The cereals supplied into the handling chamber 10 are transported to the rear side of the handling chamber 10 while the pestle and the like are handled by the handling teeth 15 of the rotating handling cylinder 12. The grain that has been handled passes through the receiving net 17 and falls onto the swing sorter 25.

  The grains falling on the swing sorter 25 are sorted into the first and second by the swing sorter 25 and the wind fan 26. The first object is conveyed to the first cerealing device by the first spiral 29, and then conveyed to the Glen tank by the first cerealing device. The second product is transported to the second reduction device by the second helix 32, and then returned to the handling chamber 10 by the second reduction device for re-sorting and threshing and sorting again. After sorting, the grain is conveyed to the Glen tank, and the waste straw and the like are discharged out of the machine.

  When the mowing operation is finished, the operator sets the clutch lever 42 to the position B in order to operate only the threshing device 7 (see FIG. 3). Then, the base end portion 46 of the cutting / declutching lever 42 is rotated, and the contact between the protrusion 49b and the cutting switch 51 is released (see FIG. 4B). Thereby, the microcomputer 65 outputs a signal to the mowing / declutching motor 71 and the output gear 59 rotates. By the rotation of the output gear 59, the sector gear 56 rotates in the opposite direction to that when the clutch is connected, and rotates to an intermediate position (not shown). By the rotation of the sector gear 56, the tension of the wire 55 is released, the tension arm 57a returns to the original position, the transmission belt with which the tension arm 57a abuts is relaxed, and the cutting clutch 57 is disconnected. In this state, the pre-processing unit 5 stops after the power transmission from the engine 8 is cut (S4).

  After the completion of the threshing operation, the worker performs a discharging operation in order to carry out the grains stored in the Glen tank outside the machine. Such a discharge operation is performed by stopping the combine 1 at a predetermined position for performing the discharge operation, and then discharging the grains to a loading platform of a transport truck by the discharge auger 9. At this time, the operator turns on the grain discharge switch 43 in order to operate the discharge auger 9. Then, a signal is input to the microcomputer 65, and a signal is output from the microcomputer 65 to the grain discharging clutch motor 72 based on the signal. With this signal, the grain discharge clutch motor is operated, the grain discharge clutch 44 is connected (ON), and the discharge auger 9 is in the operating state (YES in S7).

  When the threshing device 7 is in operation, the grain discharge clutch 44 is detected by the grain discharge clutch detection means 67 including a detection sensor (not shown) for detecting the connection / disconnection state of the grain discharge clutch 44. Is detected, and a signal is input from the grain discharge clutch detection means 67 to the microcomputer 65. Based on the input signal, the discharge auger operating state determination means 73 determines that the discharge auger 9 is in an operating state, and outputs a signal to the mowing / declutch motor 71 to rotate the output gear 59. By the rotation of the output gear 59, the sector gear 56 rotates in the direction opposite to that when the clutch is connected, and rotates to the initial position (not shown). By the rotation of the sector gear 56, the tension of the wire 55 is released, the tension arm 58a returns to the original position, the transmission belt with which the tension arm 58a abuts is relaxed, and the threshing clutch 58 is disconnected. And the operation of the threshing device 7 is stopped (YES in S1, YES in S5, NO in S8, S9).

  Even if the worker stops the threshing device 7 by connecting the grain discharging clutch 44, the operator operates the clutch operating device 52 and connects the threshing clutch 58 by operating the mowing / detaching lever 42. Thus, the stop state can be canceled by an artificial operation, and the threshing apparatus 7 can be activated again (YES in S3, S4, S9, S10).

  After the mowing and threshing work is finished, when the operator moves the mowing / declutch lever 42 to the position A (see FIG. 3), the protrusions 49a and 49b are brought into contact with the threshing clutch switch 50 and the mowing clutch switch 51. It is released (see FIG. 4A). Then, the microcomputer 65 outputs a signal to the mowing / declutching motor 71 and the output gear 59 rotates. By the rotation of the output gear 59, the sector gear 56 rotates in the direction opposite to that when the clutch is connected, and rotates to the initial position (not shown). By the rotation of the sector gear 56, the pulling of the wires 54 and 55 is released, the tension arms 57a and 58a return to their original positions, the transmission belt with which the tension arms 57a and 58a abut is relaxed, and the threshing clutch 58 and The mowing clutch 57 is in a state of being cut and the preprocessing unit 5 and the threshing unit 7 are stopped (NO in S5 and S6).

  As described above, when the connection of the grain discharge clutch 44 is detected by the grain discharge clutch detection means 67 and the discharge auger operating state determination means 73 determines that the discharge auger 9 is in an operating state, the clutch operating device 52 Since the threshing clutch 58 is cut and the threshing device 7 is stopped, for example, it is possible to prevent the worker from performing the discharging operation while operating the threshing device 7 due to forgetting to cut, and the third scattering or the like during the discharging operation. It can be prevented from being discharged from the aircraft and accumulating. In other words, in the present embodiment, the grain discharge clutch detecting means 67 is a means for detecting the situation where the discharge auger 9 enters the operating state, and the grain discharge clutch detecting means is provided for the grain discharge clutch 44. By detecting the connection, it is determined that the discharge auger is in an operating state, whereby the threshing clutch 58 is disconnected and the operation of the threshing device (threshing unit) 7 is stopped (stopping means).

  Moreover, since the threshing device 7 is stopped when the discharging operation is started, noise during the discharging operation can be reduced, and furthermore, power loss due to the operation of the threshing device 7 can be suppressed, so that it is efficient. The discharge operation can be performed.

  In addition, even if the threshing device 7 is stopped by the clutch operating device 52 due to the operation of the discharge auger 9, the threshing device 7 can be released and operated by operating the mowing / declutch lever 42. The operator can perform the discharging operation while performing the handling operation, so that the degree of freedom of the operation becomes high and the efficiency of the cutting operation can be improved.

  In the present embodiment, the detection of the state in which the discharge auger 9 enters the operating state is configured to detect the connection / disconnection state of the grain discharge clutch 44 by the grain discharge clutch detection means 67. For example, turning on / off of the grain discharge switch 43, turning on / off of the turning or raising / lowering switch of the discharging auger 9 (ON / OFF), turning on / off of the automatic turning switch of the discharging auger 9 and discharging The discharge auger 9 may be operated from the discharge drive of the auger 9 to detect the state in which the discharge auger 9 enters the operating state, and based on that, the operation state of the discharge auger 9 may be determined by the discharge auger operation state determination means 73.

  Moreover, in this embodiment, although it was set as the structure which cut | disconnects the threshing clutch 58 by moving the tension arm 58a with the wire 55 of the clutch operation apparatus 52, it is not restricted to this, For example, a some gear The configuration may be such that the tension arm 58a is moved by a gear train formed by meshing, the threshing clutch 58 is disconnected, and the threshing device 7 is stopped.

  Next, another embodiment different from the above-described embodiment will be described with reference to FIG. However, the same number is attached | subjected about the same structure of the above-mentioned embodiment, and description is abbreviate | omitted.

  After cutting the cereals, the operator moves the combine 1 to a work position where the discharging work is performed. At that time, the pretreatment unit 5 is raised to a predetermined position, and the raised state is detected by the pretreatment height potentiometer 69 and the auger turning potentiometer 70 detects that the discharge auger 9 is not in the storage position. A signal is input to the microcomputer 65. When such a detection state is continuously detected for a predetermined time, the discharge auger operating state determination means 73 determines that the discharge auger 9 is in an operation state based on the input signal (YES in S11).

  As described above, since the work state of the discharge auger 9 is detected from the height position of the preprocessing unit 5, the position of the discharge auger 9, and the state of entering the work state from the passage of a predetermined time, for example, the operator When the combine 1 is moved to the position where the discharging operation is performed, the threshing device 7 is stopped at an early timing by stopping the threshing device 7 even when the discharging auger 9 is turned to the discharging posture. It can be stopped and threshing loss can be reduced.

  In the present embodiment, the state of entering the operating state of the discharge auger 9 is detected from the height of the preprocessing unit 5, the position of the discharge auger 9, and the elapsed time of the detection state. Instead, for example, only the height of the pretreatment unit 5 may be detected by the pretreatment height potentiometer 69 and the operation state of the discharge auger 9 may be determined by the discharge auger operation state determination means 73.

1 Combine 7 Threshing part (threshing device)
9 Discharge auger 52 Stop means (clutch operating device)
58 Threshing clutch 67 Judging means (grain discharge clutch detecting means)
69 Judging means (Pretreatment height potentiometer)
70 Judgment means (auger turning potentiometer)

Claims (2)

In a combine equipped with a threshing unit for threshing the harvested cereal, a Glen tank for storing the grain threshed in the threshing unit, and a discharge auger for discharging the grain in the Glen tank to the outside of the machine,
A threshing clutch for connecting and disconnecting power transmission to the threshing unit;
Detecting means for detecting a situation where the discharge auger enters an operating state;
Determination means for determining that the discharge auger is in an operating state based on the detection means;
The determining means comprises a stopping means for disengaging the threshing clutch and stopping the operation of the threshing portion by determining that the discharge auger is in an operating state.
Combine that is characterized by that. When the stopping means is in a state of stopping the threshing part and the threshing clutch is entered and operated by an artificial operation, the stopping state of the stopping means is released, and the threshing part is activated.
The combine according to claim 1.

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