JP2020043829A - Roll baler - Google Patents

Abstract

To provide a roll baler that prevents a transportation conveyor, a belt, a chain and the like from being damaged even when forage crops are clogged, and can readily resolve the clogging.SOLUTION: When detecting that a transportation conveyor 501 rotates for transportation at less than a set rotation speed, a roll baler disconnects transmission of drive force to the transportation conveyor from a normal rotation drive part 5A to stop the transportation rotation of the transportation conveyor.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a roll baler for forming chopped feed crops into roll bales.

  As described in Patent Document 1, a roll baler has a crawler operated by a prime mover disposed on a vehicle body, and also includes a harvester, a cockpit, a hopper, and a conveyor provided with a chute from the front to the rear of the vehicle body. One having a molding chamber and an ejector is known.

  According to such a roll baler, the forage crops harvested while traveling are shredded, the shredded forage crops are thrown into a hopper from a chute, and the forage crops stored in the hopper are transferred to a molding chamber by the conveyance rotation of a conveyance conveyor. The roll bale is formed in the molding chamber, and the formed roll bale is discharged to the field by the ejector.

  Therefore, the roll baler described in Patent Literature 1 can perform from the harvest of the forage crop to the formation and release of the roll bale.

JP 2015-39364 A

  However, the roll baler described in Patent Literature 1 sometimes becomes clogged on the way in which the shredded feed crop is transported to the forming chamber by the transport conveyor.

  If the feed conveyor is clogged with feed crops, there is a problem in that the conveyor, belts and chains that transmit power to the conveyors are overloaded, and the conveyors, belts and chains are damaged. In order to remove the clogged forage crops, it was necessary to perform a labor-intensive operation of removing all the forage crops in the hopper.

  Due to the problems described above, at present, there is a need for the development of a roll baler that can prevent damage to a conveyor, a belt, a chain, and the like even when a feed crop is clogged, and that can easily clear the clog.

  Means adopted by the present invention in order to solve the above-mentioned problem includes a molding chamber for molding the input forage crop into a roll bale, and a transport device for transporting the forage crop to the molding chamber. A roll conveyor, wherein the transport device is a transport conveyor that transports the forage crop to the molding chamber, a forward rotation drive unit that transmits a driving force in a transport rotational direction to the transport conveyor, and a non-transport direction to the transport conveyor. A reverse rotation driving unit that transmits a driving force, a rotation detection unit that detects a conveyance rotation state of the conveyance conveyor, and a detection result of the rotation detection unit when the conveyance rotation of the conveyance conveyor is less than a set rotation speed. A control unit that cuts off the transmission of the driving force of the forward drive unit to the transport conveyor and stops the transport rotation of the transport conveyor. Is that you Rubera.

  A method for controlling a roll baler comprising a molding chamber for molding a feed crop to be fed into a roll bale, and a transport apparatus for transporting the forage crop to the molding chamber, comprising: A roll baler characterized by detecting a transport rotation state and performing control so as to stop the transport rotation of the transport conveyor when the detection result is less than a set rotation speed of the transport conveyor. This is the control method.

It is a side view of a roll baler of an embodiment concerning the present invention. It is sectional drawing of FIG. 1, and shows the range from a hopper to an ejector apparatus. FIG. 2 is a plan view of FIG. 1. FIG. 2 is an enlarged view of a main part near a hopper shown in FIG. 1. FIG. 5 is an enlarged sectional view taken along line (5)-(5) of FIG. 4. It is a block diagram of a control part. 5 is a flowchart illustrating a control method of a control unit. FIG. 2 is an enlarged view of a main part of the molding chamber shown in FIG. 1 and is partially cut away. FIG. 3 is an enlarged view of a main part of the molding chamber in a state where a movable half is opened, and is partially cut away. It is a principal part enlarged view of FIG. It is a top view of FIG. FIG. 2 is an enlarged view of the ejector device shown in FIG. 1, showing a main part further enlarged. FIG. 13 is a sectional view taken along line (13)-(13) of FIG. 12. 4 shows a state in which a connecting shaft of a lifting support device is fitted and removed.

  Hereinafter, a roll baler A according to an embodiment of the present invention will be described with reference to FIGS. In addition, the roll baler exemplified in the present embodiment is a self-propelled harvesting roll baler that performs from harvesting of forage crops to shaping of the roll bales and discharging to the field, but the present invention is not limited to the self-propelled harvesting roll baler. .

  As shown in FIGS. 1 to 3, the roll baler A includes a cockpit 1, a traveling body 2, a harvester 3, a chute 3A, a hopper 4, a transport device 5, a molding chamber 6, a closing device 7, an ejector device, and a vehicle body A1. Further, an engine (not shown) serving as a driving force for the traveling body 2, the harvester 3, the hopper 4, the transporting device 5, and the molding chamber 6 and the power of this engine are transmitted from the cockpit 1 A power transmission system (not shown) for transmitting to the traveling body 2, the harvester 3, the hopper 4, the transfer device 5, and the forming chamber 6 by operation is provided.

  In the following, the harvester 3 side is “front (forward side)”, the ejector device 8 side is “rear”, the traveling body 2 side is “down”, the cockpit side is “up”, and The direction orthogonal to the direction is described as “left and right”.

  The above-mentioned feed crop B is used for livestock feed such as dent corn and pasture grown in the field.

  Although the basic configuration and operation of the roll baler A are the same as those of the roll baler described in Patent Document 1, detailed description is omitted. The forage crop B in the field G is cut and chopped by the machine 3, and the chopped forage crop B is thrown into the hopper 4 via the shoot 3A, and the forage crop falling from the hopper 4 is transported by the transport device 5 It is put into the molding chamber 6 by the conveyor 501.

  The feed crop B put into the molding room 6 was formed into a cylindrical roll bale B1 by the molding device 6A of the molding room 6, and the roll bale B1 was packed with the packing material sent to the molding room 6 from the sending device 4B. Thereafter, the movable half 61 of the molding chamber 6 is opened to be discharged from the fixed half 60, and the discharged roll bale B1 is discharged to the field G via the ejector 80.

  As shown in FIG. 1, the transport device 5 includes a transport conveyor 501 that transports the forage crop B to the molding chamber 6, a forward rotation driving unit 5 </ b> A that transmits a driving force in the transport direction to the transport conveyor 501, and a transport conveyor 501. The reverse drive 5B for transmitting the driving force in the non-transport direction, the rotation detector 5C for detecting the transport rotation state of the transport conveyor 501, and the forward drive 5A and the reverse drive based on the detection result of the rotation detector 5C. A control unit 5D for controlling the operation of the unit 5B.

  As shown in FIG. 2, the transport conveyor 501 is disposed in the feed crop transport space 41, which is an independent space secured below the feed crop drop port 40 of the hopper 4, and is provided at the bottom of the feed crop transport space 41. The feed crop B reaching the provided transfer surface 42 rotates by the rotation (counterclockwise rotation in the drawing) transmitted from the forward rotation drive unit 5A and is transferred to the input port 62 of the molding chamber 6. .

  The transport conveyor 501 has a planar ladder-like endless track structure similarly to the transport conveyor described in Patent Literature 1, and has rotating shafts 500, 510, The roller 520 is wound around the rollers 50 and 51 and the sprocket 52 rotatably supported so as to form an endless track.

  The rotation shaft 520 that supports the sprocket 52 is a shaft that is driven by inputting the drive from the forward drive unit 5A and the reverse drive unit 5B, and is hereinafter referred to as a “drive shaft 520”.

  As shown in FIGS. 4 and 5, the forward rotation drive unit 5A has a driven pulley 50A coaxial with the drive shaft 520 and supported so as to rotate integrally therewith, and an axis parallel to the driven pulley 50A. The supported drive pulley 51A, the drive belt 52A wound around the driven pulley 50A and the drive pulley 51A, and the positive rotation for inputting the drive rotation of the drive pulley 51A as the rotation of the driven pulley 50A and cutting. And a change clutch section C.

  The drive pulley 51 </ b> A is configured such that the power of the engine described above is driven to rotate by the power transmitted through the power transmission system described above.

  The forward rotation clutch portion C is supported on the outer periphery 520A on the lower side of the drive belt 52A so as to be vertically movable and freely contactable and detachable, and is brought into contact with and pressed by a tension roller C1 for applying tension to the drive belt 52A. A supporting rod C2 supported to be able to move up and down so as to move the tension roller C1 up and down; a motor (electric / hydraulic) C3 serving as power for moving the supporting rod C2 up and down; and a supporting rod C2 for rotating the motor C3. And a rack-and-pinion C4 for transmitting the vertical movement. Note that an actuator may be used instead of the motor C3 for the power of the vertical movement of the support rod C2.

  In such a forward rotation clutch portion C, when the motor C3 is stopped, the support rod C2 is in the lowered state, and the tension roller C1 is separated from the outer periphery 520A (shown by a virtual line in FIG. 4). Since the drive belt 52A is loosened and the drive pulley 51A idles with respect to the drive belt 52A, the drive pulley 51A is in a cut state where the drive is not transmitted, and in this cut state, the transport rotation of the transport conveyor 501 is stopped. Can be done.

  On the other hand, by rotating the motor C3 from the stopped state, the support rod C2 rises, and the tension roller C1 rises with the rise of the support rod C2, and comes into contact with the outer periphery 520A of the drive belt 52A and turns upward. 4 (shown by a solid line in FIG. 4), a tension is generated in the drive belt 52A, and the drive rotation of the drive pulley 51A is transmitted as the rotation of the drive belt 52A, and the rotation of the drive belt 52A is rotated. Is transmitted as the rotation of the driven pulley 50A, and the transport conveyor 501 can be rotated in this input state.

  As shown in FIGS. 4 and 5, the reverse rotation drive unit 5B includes a driven sprocket 50B that is coaxial with the drive shaft 520 and supported so as to rotate freely, and a motor shaft that is an axis parallel to the axis of the driven sprocket 50B. A motor (hydraulic / electric) M1 having M1, a driving sprocket 51B coaxially and integrally rotated with the motor shaft M1, and a driving chain wound around the driven sprocket 50B and the driving sprocket 51B. 52B, and a reverse rotation clutch D for inputting the driving rotation of the driving sprocket 51B as the rotation of the driven sprocket 50B and disconnecting the same.

  As shown in FIG. 5, the reverse clutch portion D is coaxial with the drive shaft 520, and is provided with a clutch plate D <b> 1 rotatably supported integrally with the drive shaft 520 slidably in the axial direction of the drive shaft 520. And a cylinder (electric / hydraulic) D2 for sliding D1.

  The clutch plate D1 is disposed between the driven sprocket 50B and the driven pulley 50A, and has a pawl clutch D10 protruding from the side facing the driven sprocket 50B.

  The driven sprocket 50B has a claw clutch engaging portion D11 with which the claw clutch D10 is disengaged by sliding of the clutch plate D1.

  When the clutch plate D1 slides toward the driven sprocket 50B, the pawl clutch D10 is engaged with the pawl clutch engaging portion D11. With this engagement, the transmission is transmitted from the driving sprocket 51B to the driven sprocket 50B via the driving chain 52B. The input state in which the rotation of the motor M is transmitted as the rotation of the drive shaft 520 can be set.

Further, the slide of the clutch plate D1 away from the driven sprocket 50B causes
The pawl clutch D10 is disengaged from the pawl clutch engaging portion D11, whereby the rotation of the motor M transmitted from the driving sprocket 51B to the driven sprocket 50B via the driving chain 52B is not transmitted to the driving shaft 520 as rotation. can do.

  The motor shaft M1 of the motor M is set to rotate as a direction for rotating the transport conveyor 501 in the reverse direction.

  The rotation detection unit 5C includes a detection target 50C and a detection sensor 51C that detects a rotation pulse of the detection target 50C, and is controlled to transmit a detection result of the detection sensor 51C to the control unit 5D. .

  The detected object 50C is a sprocket having a shaft parallel to the drive shaft 520 and rotatably supported by the drive shaft 520, and extends over a drive sprocket 53C supported by the drive shaft 520 so as to rotate integrally therewith. A chain 54C is wound around the drive shaft 520, and the rotation of the drive shaft 520 is transmitted from the drive sprocket 53C to the detection target 50C via the chain 54C.

  Further, the chain 54C is wound around the driven sprockets 55C and 56C that are rotatably supported with an axis parallel to the axis of the detected object 50C, together with the detected object 50C.

  In other words, the drive shaft 520 serves as a common drive shaft 520 for rotating the detected object 50C and for transporting and rotating the drive transport conveyor 501, and the rotation of the drive shaft 520 for transporting and rotating the transport conveyor 501 is: At the same time, the detection object 50C is also rotated so as to rotate the detection object 50C. Therefore, during the conveyance rotation of the conveyance conveyor 501, the detection object 50C is constantly rotating along with the conveyance conveyor 501, and the rotation speed of the conveyance conveyor 501 is increased or decreased. The number of rotations increases and decreases in proportion to.

  The detection sensor 51C detects a rotation pulse of the detection target 50C, and is disposed at a position where the rotation pulse of the detection target 50C can be detected.

  As the detection sensor 51C, for example, a detection sensor 51C using a well-known electromagnetic pickup can be used, and thereby, a change in the rotation pulse of the detection target 50C can be detected.

  Note that the driving sprocket 53C and the driven sprockets 55C and 56C may be the detection target 50C.

  The detection sensor 51C is not limited to the above-described detection sensor 51C using an electromagnetic pickup as long as it can detect the rotation state of the drive shaft 520 (transport conveyor 501).

  The control unit 5D is built in a control box (not shown) in the cockpit, and is electrically connected so that a rotation pulse signal of the detection sensor 51C is transmitted. The rotation speed of the detection target 50C is determined based on the rotation pulse signal transmitted from the detection sensor 51C, and when the determined rotation speed is less than the normal rotation speed, the normal rotation clutch portion C is automatically activated. , And the transport rotation of the transport conveyor 501 is stopped by this control.

  The control by the control unit 5D for automatically disconnecting the normal rotation clutch unit C can solve the problems in the following situations.

  Specifically, when an overload acts on the transport rotation of the transport conveyor 501 due to clogging, the rotation speed of the transport conveyor 501 decreases, and at the same time, the resistance acting on the transport conveyor 501 also applies to the drive shaft 520 and the driven pulley 50A. At the same time, the rotational speed of the conveyor 501 decreases as the rotational speed of the conveyor 501 decreases. At this time, the driving rotational force from the driving pulley 51A is transmitted to the driven pulley 50A via the driving belt 52A.

  For this reason, the driven pulley 50A stops the rotation of the transport conveyor 501, which is transmitted via the drive belt 52A, for rotating the transport conveyor 501 and the transport rotation caused by the resistance due to the overload acting on the transport rotation of the transport conveyor 501. The resistance force to be applied acts simultaneously.

  That is, the rotational force of the driving pulley 51A transmitted to the driven pulley 50A via the driving belt 52A is to force the driven pulley 50A to rotate in the transport direction against the resistance force acting on the driven pulley 50A. Become.

  Then, the force for forcibly rotating the drive belt 52A causes an overload on the drive belt 52A, and the overload causes the drive belt 52A to slip on the drive pulley 51A and the driven pulley 50A. The slip having a high resistance causes the drive belt 52A to be damaged or worn.

  Further, the transport conveyor 501 has been damaged due to the resistance due to the overload acting directly on the transport conveyor 501.

  Therefore, as described above, the rotation speed of the conveyor is detected by the rotation detection unit 5C, and when the detected rotation speed is less than the normal rotation speed, the control unit 5D automatically disconnects the normal rotation clutch unit C. By the control to be performed, the tension of the drive belt 52A is loosened and the drive pulley 51A idles with respect to the drive belt 52A, so that the overload on the drive belt 52A caused by the resistance due to the overload acting on the transport conveyor 501 is eliminated. In addition to this, it is possible to prevent slip with high frictional resistance due to overload, and to prevent the transport conveyor 501 from being damaged due to overload.

  In addition, even if the operator does not notice that the conveyance speed of the conveyance conveyor 501 has been reduced due to clogging during the conveyance operation, the forward rotation clutch portion C is automatically disconnected and the conveyance rotation of the conveyance conveyor 501 is stopped. Therefore, it is possible to quickly respond to the clogging.

  The control unit 5D controls the input operation and the disconnection operation of the reverse rotation clutch unit D to be invalid during the transport operation, and releases the operation invalidation when the normal rotation clutch unit C is disconnected to release the reverse rotation clutch. It is preferable to perform control to enable the input operation / disconnection operation of the section D, or control to automatically switch the reverse rotation clutch D to the input state when the forward rotation clutch section C is disconnected. By such control, it is possible to prevent erroneous operation of the reverse rotation clutch unit D during the transport operation.

  That is, after the transport rotation of the transport conveyor 501 is stopped, the reverse rotation clutch unit D is switched to the input state by manual operation or the control of the control unit 5D, and the motor M is operated to reverse the transport conveyor 501. The work for removing the jam can be performed by reversing the conveyor 501.

  After the removal of the jam, by switching the reverse rotation clutch D to the disconnected state, stopping the motor M, and switching the normal rotation clutch C to the input state, the transport conveyor 501 can be transported again.

  Next, a method of controlling the normal rotation clutch portion C and the reverse rotation clutch portion D by the control portion 5D will be described with reference to FIGS. 6 and 7. In this control method, the operation of the reverse rotation clutch portion D to the input state is manually performed. Done.

  As illustrated in FIG. 6, the control unit 5D includes at least a receiving unit 50D, an operation storage unit 51D, a determination transmitting unit 52D, and an operation signal transmitting unit 53D.

  The receiving unit 50D receives the rotation pulse signal transmitted from the detection sensor 51C and transmits the rotation pulse signal to the operation storage unit 51D.

  The operation storage unit 51D calculates the number of rotations of the detection target 50C based on the received rotation pulse signal, stores the calculated number of rotations, and sets a normal rotation number and a normal rotation clutch unit C which are set in advance. A program and the like for controlling the transport device 5 including the control of the reverse rotation clutch unit D are stored, and the calculated rotation speed and the normal rotation speed are transmitted to the determination transmission unit 52D.

  The determination transmission unit 52D compares the transmitted calculated rotation speed with the normal rotation speed, determines whether the calculated rotation speed is lower than the normal rotation speed, and determines that the determination result is lower than the normal rotation speed. , A signal for rotating the motor C3 is transmitted to the forward rotation clutch C.

  The operation signal transmission unit 53D monitors whether or not the determination transmission unit 52D has transmitted a signal for rotating the motor C3. If no signal is transmitted (shown by a solid line), the operation signal transmission unit 53D operates the reverse rotation clutch unit D. An operation invalidation signal is transmitted to D100 (shown by a solid line), and when the signal is transmitted (shown by a broken line), an operation invalidation release signal is sent to the operation unit D100 of the reverse rotation clutch unit D (shown by a broken line). Have been to be.

  The program executed by the control unit 5D will be described with reference to FIG. 7. This program is started when the transport conveyor 501 is rotated while the normal rotation clutch unit C is in an input state (S1).

  During the conveyance rotation of the conveyance conveyor 501, the detection sensor always detects the rotation pulse of the detection target 50C (S2), and transmits the detection result to the reception unit 50D (S3), and via the reception unit 50D. The operation storage unit 51D constantly calculates the number of rotations of the input rotation pulse signal (S4).

  The rotation speed calculated by the operation storage unit 51D and the preset normal rotation speed are always transmitted to the determination transmission unit 52D (S5), and the determination transmission unit 52D transmits the calculated rotation speed and the normal rotation speed. The rotation speed is always compared with the normal rotation speed (S6), and it is determined whether or not the calculated rotation speed is lower than the normal rotation speed (S7). A signal for rotating the motor C3 is transmitted to C (S8).

  That is, the forward rotation clutch portion C can be disconnected by the rotation of the motor C3, whereby the transport rotation of the transport conveyor 501 can be automatically stopped when the current rotational speed is less than the normal rotational speed. it can.

  If the result (S9) monitored by the operation signal transmission unit 53D indicates that a signal for rotating the motor C3 has not been transmitted, an operation invalidation signal is transmitted to the operation unit D100 (S10), and the motor C3 is rotated. If a signal to be transmitted is transmitted, an operation invalidation release signal is transmitted to the operation unit D100 (S11).

  That is, in a state where the operation invalidation signal is transmitted to the operation unit D100, all operations of the reverse rotation clutch unit D are invalidated, and only when the operation invalidation release signal is transmitted to the operation unit D100, the reverse rotation clutch D is transmitted. A manual operation of the unit D can be performed, whereby the program ends (S12).

  Regarding automatic control of the reverse rotation clutch unit D, in FIG. 6, when the determination transmission unit 52D and the reverse rotation clutch unit D are connected and the rotation speed calculated by the determination transmission unit 52D is less than the normal rotation speed, A signal for rotating the motor C3 is transmitted to the forward clutch C (disconnected state), and a signal for extending the cylinder D2 is transmitted to the reverse clutch D (input state: indicated by a virtual battle). A signal for rotating M is transmitted (shown in a virtual battle).

  In the program for automatically controlling the switching of the reverse rotation clutch D to the input state, when a signal for extending the cylinder D2 is transmitted in S9 of FIG. 7, a signal for extending the cylinder D2 and a signal for operating the motor M are transmitted. (S11 ′ (indicated by a virtual battle)) is added.

  With this automatic control, it is possible to perform the automatic stop control of the transport rotation of the transport conveyor 501 and the automatic start control of the non-transport rotation (reverse rotation) of the transport conveyor 501, and to stop the reverse rotation of the transport conveyor and restart the transport rotation. This can be performed by manual operation of the unit D100.

  The forming chamber 6 is supported by a fixed half 60 in which an inlet for feeding the forage crop into the forming chamber 6 is secured, and is rotated around an axis parallel to the axis of the roll bale B1. It comprises a movable half 61 that opens and closes with respect to the fixed half 60, and a molding device 6A disposed over the fixed half 60 and the movable half 61.

  The forming device 6A includes a plurality of rotating rollers 62 arranged so as to be continuous on a circumference extending over the fixed half 60 and the movable half 61, and at least the fixed half 60 of the rotating rollers 62. And a forming belt 63 wound around a rotating roller 62B disposed above the rotating roller 62A, and a rotating roller 62C constituting at least the lower end of the movable half 61. A forming belt 64 wound around a rotating roller 63D disposed above the rotating roller 62C; an outer peripheral surface located at an upper end of the forming belt 64; and a rotating roller 62 circumferentially adjacent to the outer peripheral surface. And a closing device 7 for opening and closing the gap S between itself and the peripheral surface.

  The basic configuration and basic operation of the molding chamber 6 and the basic configuration and basic operation of the molding device 6A are the same as those of the molding chamber and molding device mounted on the roll baler described in Patent Document 1 described above. Since they are the same, a specific description is omitted.

  As shown in FIGS. 1 to 3 and FIGS. 8 to 11, the closing device 7 includes a closing body 70 that closes the gap S and a link mechanism that transmits opening and closing movement of the movable half 61 as opening and closing movement of the closing body 70. 71.

  The closing body 70 faces the gap S from the outer peripheral side of the molding chamber 6 and is disposed so as to cover the entire left-right direction of the gap S. The movable half 61 has a center on an axis parallel to the axis of the movable half 61. The movable half 61 is provided so as to rotate in the direction of coming and going with respect to the gap S so as to extend over the left and right side plates 61A and 61B.

  When the movable half 61 is in the closed state (FIG. 8), the closing body 70 contacts the forming belt 64 and the rotating roller 62 to close the gap S by the link mechanism 71, while closing the movable half 61. Is in the open state (FIG. 9), the link mechanism 71 switches to separate from the forming belt 64 and the rotating roller 62 to open the gap S.

  The closing body 70 is formed in a hollow shape using a material having elasticity such as rubber, and includes an elastic body 700 whose elasticity is generated by the material and the hollow form or both, and a support 701 supporting the elastic body 700. Therefore, the performance of closing the gap S can be enhanced by the elasticity of the elastic body 700.

  The support 701 is rotatably supported on the side plates 61A and 61B via a support shaft 70A having a left-right axis.

  The link mechanism 71 is disposed outside the left side plate 61A, and one end side is supported by the support shaft 70A of the closing body 70 so as to rotate integrally with the support shaft 70A, and is disposed so as to extend between the support plate 71A and the side plate 61A. Link rod 71B.

  In the illustrated embodiment, the link mechanism 71 is arranged on the left side plate 61A, but may be arranged on the right side plate 61B in the present invention.

  As shown in FIGS. 10 and 11, the link rod 71B rotatably supports the other end of the support plate 71A, slides in the axial direction of the link rod 71B, and a shaft of the slide body 72B. The two springs (biasing portions) 73B and 74B which hold the fixed position of the slide body 72B from both sides in the direction and bias the slide body 72B to return to the fixed position with respect to the slide of the slide body 72B are provided. Provided.

  The slide body 72B is provided with a support shaft 70B having a left-right axis, and a support plate 71A is rotatably supported on the support shaft 70B.

  That is, the support plate 71A is rotatably supported by the support shaft 70B, while the support plate 71A is supported by the support shaft 70A rotatably supported by the side plates 61A and 61B so as to rotate integrally. Therefore, a link structure that transmits the rotation in the direction in which the support plate 71A separates from the gap of the closing body 70 by the positional movement of the slide body 72B accompanying the sliding of the link rod 71B in the axial direction is configured.

  The springs 73B and 74B are arranged so as to sandwich the slide body 72B from both axial sides of the link rod 71B.

  In the figure, reference numerals 731B and 741B denote support portions fixed to the link rod 71B and supporting the springs 73B and 74B. The springs 73B and 74B are arranged between the support portions 731B and 741B and the slide body 72B. .

  That is, since the urging forces of the springs 73B and 74B are applied to the slide body 72B from both sides in the axial direction of the link rod 71B, the fixed position of the slide body 72B can be maintained, and the slide position of the slide body 72B is determined. It can be held by the biasing force of the springs 73B, 74B.

  The fixed position of the slide body 72B is a position where the biasing forces of the springs 73B and 74B with respect to the slide body 72B are the same when the movable half 61 is in the closed state, and is a position where the closing state of the closing body 70 can be maintained. is there.

  In the open state of the movable half 61, the spring 74B is contracted by the position movement of the slide body 72B, and the slide body 72B is held in a state where the spring 73B is extended.

  A rotation fulcrum shaft 76B serving as a rotation fulcrum of the link rod 71B is provided at an end of the link rod 71B on the side of the side plate 61A, and the rotation fulcrum shaft 76B is eccentric from the rotation center CR of the movable half 61. In the drawings, the movable half 61 is rotatably supported at a position eccentric downward from the rotation center CR in the radial direction with a shaft parallel to the axis of the support shaft 70A.

  When the movable half 61 is opened and closed, the link rod 71B rotates about the rotation fulcrum shaft 76B with the opening and closing operation, and rotates with respect to the support plate 71A in this rotation path. A pulling force and a pushing force in the direction are generated.

  The pulling force and the pushing force of the link rod 71B are eccentric to the rotation fulcrum position of the link rod 71B from the rotation center CR of the movable half 61, so that the movable half 61 is closed and open. In this state, a difference (closed> opened) occurs between the rotation center CR of the movable half 61 and the end of the link rod 71B on the support plate 71A side.

  That is, due to the above-described distance difference generated when the movable half is opened and closed, the pulling force and the pushing force due to the position movement of the slide body 72B accompanying the axial sliding of the link rod act on the support plate 71A. The support shaft 70A can be rotated by the force and the pushing force, and the rotation of the support shaft 70A can rotate the closing body 70 so as to approach and separate from the gap S.

  The pivot position of the rotation fulcrum shaft 76B is not limited to the illustrated position, and may be any position that causes the above-described distance difference.

  The link mechanism 71 is not limited to the illustrated form, and may be any mechanism that can transmit and close the opening and closing operation of the movable half 61 as opening and closing movement to the gap S of the closing body 70.

  During the formation of the roll bale B1 (movable side half-closed state), the closing device 7 of the present embodiment is in a state where the closing mechanism 70 closes the gap by the link mechanism 71. It is possible to prevent the forage crop B from falling into the gap S from falling out of the gap.

  When the movable half 61 is opened after the formation of the roll bale B1, the closing mechanism 70 opens the gap S by the link mechanism 71, and a space is created in the closing body 70, so that the closing body 70 enters the gap S. Slight feed crops clogged with can be removed by rotation of the forming belt 64 with the movable half 61 open.

  Therefore, it is possible to reduce the amount of spillage of the forage crop B during the formation of the roll bale B1 and to easily remove the forage crop B clogged in the gap S without adversely affecting the molding belt 64.

  The ejector device 8 supports the roll bale B1 discharged from the fixed half 60, and lowers the roll bale B1 while supporting the roll bale B1, and rolls and discharges the roll bale B1 from a low position near the field G. .

  As shown in FIGS. 1 to 3 and FIGS. 12 to 14, the ejector device 8 supports an ejector 80 rotatably supported on the vehicle body A <b> 1 in the left-right direction, and supports the ejector 80 to rotate. The apparatus includes an elevating and lowering support device 8A that supports the stopped state of the ejector 80, and a connecting device 8B that removably connects the elevating and lowering support device 8A to the ejector 80.

  The lifting and lowering support device 8A is a gas spring or a single-acting cylinder that generates an urging force by expansion and contraction, and the ejector 80 is moved up and down by expansion and contraction of the lifting and lowering support device 8A.

  The lifting and lowering support device 8A holds the ejector 80 at a support position for supporting the roll bale B1 discharged from the molding chamber 6 (the state of the ejector 80 shown by the solid line in FIG. 1). When the load of the roll bale B1 that exceeds the urging force of the roll bale B1 is applied, the roll bale B1 is contracted, and the ejector 80 is lowered so as to form a slope (the state of the ejector 80 shown by the phantom line in FIG. 1). Has a biasing force to raise the ejector 80 to the support position when is discharged into the field.

  The elevating and lowering support device 8A is connected to the vehicle body A1 and the ejector 80 in the axial direction via connection shafts projecting from both ends in the axial direction and having axes parallel to the axis of the ejector 80. At the same time, the connecting shaft of the ejector 80 is connected via a connecting device 8B.

  The connecting shafts 80A and 80B are connected to the vehicle body A1 and the connecting device 8B, respectively, so as to rotate around the shafts, and are configured to rotate following the rotation of the ejector up and down.

  The vehicle body A1 is provided with a connection plate A10 having a plurality of connection positions P, so that the connection position P of the connection shaft 80A can be changed according to the weight of the roll bale B1.

  The connecting device 8B is provided on a pair of mounting plates 800 provided on the ejector 80, and includes a rotating shaft 80C having a shaft parallel to the connecting shaft 80B and rotatably supported, and a pair of mounting plates 800 A pair of left and right rotating plates 81B rotatably supported so as to rotate integrally with the rotating shaft 80C, a connecting recess 82B recessed in the rotating plate 81B and supporting the connecting shaft 80B so as to be able to be inserted and removed. A rotation limiting device 83B for limiting the rotation of the rotating plate 81B.

  The rotating shaft 80C is provided with a jig insertion opening 801 opened radially from the peripheral surface of the rotating shaft, and a rod-shaped jig (not shown) is inserted into the jig insertion opening 801. By moving the jig in the circumferential direction of the rotation shaft 80C, the rotation shaft 80C can be rotated.

  The connection recess 82B is recessed along the meridian of the rotation shaft 80C, and the edge of the rotation plate 81B is an open portion 820 into which the connection shaft 80B is fitted, and the bottom is rotatably contacted by the connection shaft. It is formed as an arc-shaped contact support portion 821 to be supported.

  During the rotation range of the rotating plate 81B accompanying the rotation of the rotating shaft 80C, the connecting shaft 80B is unfittable and connected to the connecting recess 82B at the position (FIG. 12) where the lifting and lowering support device 8A holds the ejector 80 at the support position. A holding position for holding the connected state and a fitting / removing position for fitting / removing the connecting shaft from the opening 820 are set.

  In the holding position of the rotating plate 81B, as shown in FIG. 12, the opening 820 faces the vehicle body A1, the connecting shaft 80B is fitted in the connecting recess 82B, and the connecting shaft is biased by the urging force of the lifting and lowering support device 8A. 80B is pressed against the contact support 821.

  Since the lifting support device 8A is configured to support the ejector 80 and is inclined so as to be higher from the vehicle body A1 toward the ejector 80, the lifting support device 8A is connected to the rotating plate 81B to which the connection shaft 80B is connected at the holding position. An urging force that extends in the inclination direction of the lifting and lowering support device 8A is acting via the shaft 80B, and the urging force that extends in the inclination direction moves from the holding position to the fitting position shown in FIG. (Clockwise) trying to rotate.

  Therefore, the rotation of the rotating plate 81B in the holding position is restricted by the rotation restricting device 83B from the holding position to the disengagement position, thereby preventing the rotation of the rotating plate 81B due to the urging force of the lifting and lowering support device 8A. And the connection state of the connection shaft 80B can be maintained.

  In the drawing, reference numeral 822 denotes a blocking body that blocks rotation of the rotating plate 81B in the holding position in the counterclockwise direction in the drawing.

  As shown in FIG. 14, the engagement / disengagement position is, as the rotating plate 81B is rotated clockwise in the drawing from the holding position, the lifting / lowering support device 8A is rotated about the axis of the connecting shaft 80A in the drawing. The connection shaft 80B rotates counterclockwise, and the rotation trajectory of the connection shaft 80B drawn along with the rotation is set at a position substantially coinciding with the direction in which the connection recess 82B is formed.

  The position where the rotation locus of the connection shaft 80B substantially coincides with the recessed direction of the connection concave portion 81B is determined by rotating the connection shaft 80B counterclockwise in the drawing about the connection shaft 80A of the lifting and lowering support device 8A as the rotation center. A position where the connection shaft 80B can be removed from the opening 820 by being able to be pulled out from the opening 820 and rotated clockwise about the axis of the connection shaft 80A of the lifting and lowering support device 8A in the drawing. And changes in accordance with the axial length of the lifting support device 8A.

  That is, as shown in FIG. 14, by rotating the lifting / lowering support device 8A about the axis of the connecting shaft 80A at the fitting / removing position, the connecting shaft 80B can be pulled out from the connecting concave portion 81B, and the connecting shaft 80B can be removed. It can be fitted into the connection recess 81B.

  Further, in a state where the connecting shaft 80B is pulled out, the urging force of the lifting and lowering support device 8A does not act on the connecting shaft 80A. Therefore, even if the connecting shaft 80A is connected by bolts and nuts, the attaching and detaching of the connecting shaft 80A and The connection position P can be easily changed.

  The connecting device 8B is not limited to being disposed on the mounting plate 800 on the ejector 80 side as illustrated, but may be disposed on the connecting plate A10 on the vehicle body A1 side, or both the mounting plate 800 and the connecting plate A10. May be arranged.

  As shown in FIGS. 12 to 14, the rotation restricting device 83 </ b> B is provided so as to protrude above the rotating plate 81 </ b> B so that an edge of the rotating plate 81 </ b> B in the rotating direction contacts and has an axis parallel to the rotating shaft 80 </ b> C. At the same time, it is detachably fixed along the axial direction.

  The rotation restricting device 83B can use, for example, a bolt and a nut, and can be attached to the mounting plate 800 by penetrating the bolt through the mounting plate 800 and screwing the nut to the penetrated bolt. By removing the bolt from the mounting plate 800, the bolt can be removed from the mounting plate 800.

  In the ejector device 8 of the present embodiment, the rotation of the rotating plate 81B is restricted by the rotation restricting device 83B in a state where the coupling shaft 80B is coupled to the rotating plate 81B at the holding position. Can be.

  In addition, by removing the rotation restricting device 83B, the rotating plate 81B can be rotated from the holding position to the disengagement position, and in the disengagement position, the connecting shaft 80B can be pulled out from the connecting concave portion 82B and the connecting shaft 80B Can be fitted.

  Therefore, the work of changing the mounting position of the lifting and lowering support device 8A and the work of replacing it can be easily performed.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention.

  In addition, each of the above-described embodiments can be combined with each other by diverting technologies unless there is a particular contradiction or problem in the purpose, configuration, or the like.

A: Roll baler B: Forage crop B1: Roll bale 5: Transport device 6: Molding room 501: Transport conveyor 5A: Forward rotation drive unit 5B: Reverse rotation drive unit 5C: Rotation detection unit 5D: Control unit C: Forward rotation clutch unit D : Reverse rotation clutch

Claims (5)

A roll baler comprising a molding chamber for molding a forage crop to be fed into a roll bale, and a transport device for transporting the forage crop to the molding chamber,
The transport device, a transport conveyor for transporting the forage crop to the molding room,
A normal rotation drive unit that transmits a driving force in a transport rotation direction to the transport conveyor,
A reverse drive for transmitting a driving force in a non-conveying direction to the conveying conveyor,
A rotation detection unit that detects a transport rotation state of the transport conveyor,
When the detection result of the rotation detection unit is less than a set rotation speed of the transport conveyor, the transmission of the driving force of the forward rotation drive unit to the transport conveyor is cut, and the transport rotation of the transport conveyor is stopped. And a control unit for controlling so as to stop the roll baler.   The forward rotation drive unit includes a forward rotation clutch unit that switches transmission of a driving force in the transport rotation direction to the transport conveyor between an input state and a disconnected state, and includes an input state and a disconnected state of the forward rotation clutch unit. 2. The roll baler according to claim 1, wherein the operation of switching to is controlled by the control unit. 3.   The reverse rotation drive unit includes a reverse rotation clutch unit that switches transmission of a driving force in a non-transport direction to the transport conveyor between an input state and a disconnected state, and the reverse rotation clutch unit is configured to perform a transfer operation of the transport conveyor. The control unit is controlled by the control unit so as to prevent switching to the disconnected state and to enable the reverse rotation clutch unit to be switched to the input state when the transport rotation of the transport conveyor is stopped. The roll baler according to claim 1 or 2, wherein   The reverse rotation drive unit includes a reverse rotation clutch unit that switches transmission of a driving force in a non-transport direction to the transport conveyor between an input state and a disconnected state, and the reverse rotation clutch unit is configured to perform a transfer operation of the transport conveyor. 2. The control unit according to claim 1, wherein switching to a disconnected state is prevented, and the control unit is controlled to switch the reverse rotation clutch unit to an input state when the transport rotation of the transport conveyor is stopped. Or the roll baler according to 2. A method for controlling a roll baler comprising a molding chamber for molding a forage crop to be fed into a roll bale, and a transport device for transporting the forage crop to the molding chamber.
The transport rotation state of the transport conveyor of the transport device is detected, and when the detection result is less than the set rotation speed of the transport conveyor, control is performed to stop the transport rotation of the transport conveyor. A method for controlling a roll baler.

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