JP2005211007A - Apparatus for binding waste straw in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste straws-binding apparatus of a combine harvester in which lock phenomenon of a raking packer can be avoided even when a large amount of waste straws are fed in a short time and waste straws can be bound in a collected state without causing irregularity of the fed waste straw posture. <P>SOLUTION: This waste straws-binding apparatus of the combine harvester is constituted so as to install a waste straws-supporting member 25 which receives waste straws from the under side in the neighborhood of a binding position in the longitudinal direction of waste straws over the rear end of a collecting space S from the front place of the collecting space S, form a recessed and stepped part in which the back side of the collecting space S is recessed in a part corresponding to the starting end of the collecting space S of the waste straws-supporting member 25 and install a conveying deck 26 for receiving the waste straws from the under side on the foot side of the waste straws from the installation position of the waste straws-supporting member 25 and set a waste straws-receiving height of the conveying deck 26 to be lower than a waste straws-receiving height in the front part of the recessed stepped part 25a of the waste straws-supporting member 25. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a combine drainer binding device.

The combine drainer binding device of the combine is provided with a knot mechanism having a knot mechanism and a release mechanism on the upper side of the converging space where the drainer is collected in a sideways posture, and a squeeze packer and a string supply unit are provided below the converging space. A specification in which a string supply portion provided with a needle is provided (see Patent Document 1), and conversely, a string supply portion is provided on the upper side of the focusing space, and a knot portion is provided on the lower side of the focusing space. There is a specification (see Patent Document 2), and any one of the specifications is appropriately selected and used corresponding to the combine machine.
Japanese Utility Model Publication No. 3-50821 JP 2001-54315 A

  In recent years, the speed of the combine grows faster, the amount of harvest per unit time increases, and the amount of waste straw supplied per unit time to the waste straw binding device naturally increases. Therefore, when a large amount of waste straw is supplied to the waste straw binding device at once, resistance to the subsequent waste straw is caused by the reverse flow due to the elastic recovery of the waste straw that has been scratched and compressed first. Next, when the scraping operation is performed, a so-called draining wall lock state occurs in which the draining trap is caught between the leading end portion of the scraping packer and the string guide plate which is a member that partitions the converging space, and the scraping packer cannot be restored. It becomes easy to do.

  Further, in high-efficiency work with a large yield per unit time, when a small bundle is bundled, the number of bundles is increased and subsequent handling is difficult, so a large bundle is often performed. Here, since the waste straw is bulky on the stock side compared to the tip side, when a large amount of waste straw is focused on the converging space, the upper level waste straw is greatly inclined to the tip-down state, and sometimes the concentrated waste straw Will move to the tip side and become a unity with poor stock alignment.

  The present invention has been made paying attention to such a point, and even if a large amount of waste straw is supplied in a short time, the lock phenomenon of the scraper packer can be avoided and the supplied waste straw is supplied. It is an object of the present invention to provide a combine exhaust wall binding device capable of focusing and binding without posture disturbance.

  [Configuration of first invention, and operation / effect]

In the first invention, a knot mechanism and a discharge mechanism are provided on one side in the vertical direction of the converging space for collecting the exhaust straw in a sideways posture, and a scraper packer and a string are supplied on the other side in the vertical direction of the converging converging space. In the combine drainer binding device comprising a needle for
In the vicinity of the binding position in the longitudinal direction of the waste wall, a waste wall support member for receiving the waste wall from below is provided from the front part of the convergence space to the rear end portion of the convergence space S, and the convergence space start of the waste wall support member. In the part corresponding to the part, a depression step where the back side of the converging space falls is formed, and a transport deck for receiving the waste straw from below is installed on the waste straw stocker side from the installation position of the waste straw support member, and this transportation It is characterized in that the height of the deck receiving waste receiving member is set to be lower than the height of the receiving waste receiving portion at the front part of the stepped portion of the falling wall supporting member.

  According to the said structure, the waste straw of the side-down attitude | position conveyed from the threshing part receives a scraping action intermittently by a scraping packer, and is sequentially pushed into a convergence space. When it is detected by the convergence pressure that a predetermined amount of waste straw has been collected, the needle is activated in synchronization with the next scraping operation, and the binding string loaded through the rear part of the convergence space converges. While being wrapped around the straw, it passes through the front end of the convergence space and is supplied to the knot mechanism. The knotting mechanism knots the tying cords wound around the waste straw group to form one bundle of bundles, and this bundle is forcibly ejected from the rear end exit of the convergence space by the discharge mechanism. Will be.

  In this case, the waste straw that has been carried out from the threshing device and supplied to the inlet portion of the bundling device is received and supported by the waste straw support member from below, and then pushed into the converging space under the scraping action of the scraping packer. However, the converging space is one step lower than the stepped portion of the exhaust wall support member, and the vertical width of the converging space is increased. Then, the waste straw pushed into the converging space by the scraping packer falls down on the back side from the stepped portion, and the stepped portion prevents the back flow forward (toward the entrance of the converging space). In front of the part, it is unlikely that the waste straw pushed in first will flow backward and become a drag resistance of the subsequent waste straw.

  Therefore, according to the present invention, even if a large amount of waste straw is supplied in a short time, it is possible to avoid the lock phenomenon of the scraper packer, and to overcome the overshoot seen when using the backflow prevention member. The wall posture is not disturbed and can be reliably converged and bound in an appropriate posture, and can be effectively used as an exhaust wall binding device for a high-performance combine.

[Configuration, operation, and effect of the second invention]

  The second invention is characterized in that, in the first invention, the height of the waste deck receiving edge of the transport deck is set to be lower than the bottommost portion of the drop step portion of the waste wall support member. .

  According to the above configuration, the stocker side of the condensing waste straw can be received and supported by the transport deck even lower, and even when a large amount of waste straw is converging, the degree of inclination toward the tip of the upper waste straw is lowered, and the waste is reduced. Suppressing the movement of the straw toward the tip side, it is possible to bind large bundles with a good stock arrangement.

  [Configuration, Action and Effect of Third Invention]

  According to a third invention, in the first or second invention, the knotting mechanism and the discharge mechanism are located above the focusing space, and the scraper packer and the string supply needle are located below the focusing space, respectively. In addition to being deployed, the drop-off step portion of the exhaust straw support member is disposed immediately after the needle trajectory.

  According to the above configuration, the needle is finally scratched because it is a place where the reverse flow of the discharge wall is difficult to occur on the front side of the stepped portion of the discharge wall support member and the vertical width of the discharge wall path is also narrow. Passing upward through the waste straw passage divided into front and rear by the scraping packer to supply the binding string to the knot mechanism.

  Therefore, according to the third aspect of the invention, the needle is not caught by the needle with the needle and brought into the knot mechanism, and the above-described effects of the first and second aspects of the invention are brought about, and the smooth clogging of the knot mechanism is suppressed. Can be expected.

  FIG. 1 shows a side surface of the rear part of the self-removing combine, FIG. 2 shows a plane thereof, and FIG. 3 shows a side surface of the waste straw processing unit. The waste wall binding device B according to the present invention is disposed at the rear part of the disk-type waste wall cutter 1 connected to the rear end of the combine machine A, and the flow path is disposed so as to swing up and down around the rear fulcrum a. By lowering the switching plate 2 and closing the upper entrance of the waste straw cutter 1, the waste straw in the lying position that has been carried out of the threshing device and transported by the waste straw transport device 3 is supplied to the waste straw binding device B. By raising the flow path switching plate 2 and opening the upper entrance of the waste straw cutter 1, the waste straw that has been conveyed can be shredded and released downward.

  The waste straw binding device B collects and bundles a predetermined amount of waste straw supplied in a sideways posture, and discharges the formed straw bundle to the rear of the fuselage. A converging space S is formed at an upper and lower intermediate portion of the transmission case 4 that is long in the vertical direction. As shown in FIG. 2, on the stock side of the waste straw binding device B, a stock stocking device D is provided that strikes and aligns the stock end of the waste straw that is carried in by a striking plate 5 that swings left and right. In the rear of the waste straw binding apparatus B, there is a straw bundle releasing apparatus E that receives the straw bundle R that has been released, is held and conveyed obliquely rearward, and then dropped in a posture with the stock end facing downward to stand on the field. It is installed.

  In the lower part of the transmission case below the converging space S, a crank-type scraping packer 6 for feeding the conveyed waste straw toward the converging space S, a needle 7 for supplying a binding string, and a converging space S are collected. A sensing door 8 that senses the focused pressure of the discharged exhaust wall is provided, and the transferred exhaust wall is pushed into the working area of the packer 6 in the upper part of the transmission case above the focused space S. A crank-type auxiliary packer 9, a string guide plate 12 facing the converging space S, a knotter-billed well-known knot mechanism 10, and a crank-type discharge mechanism 11 are provided. While being always driven, the lower needle 7, the upper knot mechanism 10, and the discharge mechanism 11 are intermittently driven in synchronization based on the focus pressure sensing.

  The basic bundling operation of the waste straw bundling apparatus B will be described below. In other words, the waste straw that has been conveyed is first scraped back by the auxiliary packer 9 and subsequently sent into the converging space S under the scraping action of the scraping packer 6. While the focusing pressure acting on the sensing door 8 is less than the set value, the one-rotation clutch (described later) inside the case is disengaged, and the needle 7 is stopped at the standby position retracted below the focusing space S. Further, the knot mechanism 10 and the discharge mechanism 11 that are synchronized with the needle 7 are also stopped in a standby state.

  When a predetermined amount of waste straw is converged in the converging space S, the sensing door 8 is moved backward by receiving a converging pressure equal to or higher than a set value generated by the scrambling operation of the scrambling packer 6, thereby causing a one-rotation clutch. Becomes ready to start. Then, in synchronization with the next scraping operation of the scraping packer 6 (final scratching operation), the one-rotation clutch is engaged and actuated at a predetermined timing to start driving the needle 7 and drive the knot mechanism 10. Force transmission is started.

  When the scraper packer 6 performs the final scraping operation, the needle 7 crosses the drainer carry-in path from below through the space where the scraper is pushed back and forth by the scraper packer 6, and the knot mechanism 10 The bundling string that passes through the string guide plate 12 disposed below and is held at one end by the string holder 10b of the knotting mechanism 10 is supplied to the knotting mechanism 10 while being wound around the drainer of the converging space S from the front. The knot mechanism 10 operates in synchronism with the string supply operation by the needle 7, and knot operations such as knotting the string by the knot building 10a, cutting the supply string by the string holder 10b, and holding the cut end are sequentially performed. .

  Thereafter, the discharge arm 13 of the discharge mechanism 11 that operates in synchronism with the knot mechanism 10 pushes and moves the binding brace backward, and accordingly, the binding string is pulled out of the knot building 10a to form a knot, and the subsequent discharge arm 13 continues. As a result of the backward movement, the straw bundle R is discharged backward from the converging space S. At this time, the sensing door 8 is retracted downward to open the rear outlet of the converging space S.

  When the knotting mechanism 10 completes the knotting operation and the new cut end of the bundling string is held by the string holder 10b, the needle 7 moves backward, and the needle 7 returns to the standby position below the focusing space S. At this time, the one-rotation clutch is automatically disengaged and the needle drive is stopped, and the sensing door 8 is raised and returned to the original sensing position, thereby completing one bundling operation, and the subsequent drainer continues. It will be focused.

  Note that a bracket 11a serving as a link fulcrum of the discharge mechanism 11 and a device frame 14 made of a square pipe placed horizontally above the front part of the discharge wall binding device B are connected by a stay 15, and the knot mechanism 10 in the above knotting operation. Is prevented from vibrating or displacing, and stable nodule operation is performed.

  The detailed configuration of each part in the waste straw binding device B configured as described above will be described below.

  As shown in FIG. 4, the auxiliary packer 9 that first scrapes and conveys the waste straw is disposed at an appropriate distance away from the binding action position on the waste straw stocker side, and is supported sideways. In FIG. 5, a crankshaft 16 that is always rotated counterclockwise, a pair of left and right crank arms 17 connected to both ends of the crankshaft 16, and a device fixing portion are mounted so as to be able to swing back and forth about a fulcrum b. The swing arm 18 and a packer arm 19 made of a plate material pivotally connected to the free end of the crank arm 17 and the free end of the swing arm 18 are configured. Then, the tip of the packer arm 19 circulates and rotates with a long trajectory back and forth by the crank operation accompanying the rotation of the crank arm 17, so that the waste straw is scraped and conveyed toward the working area of the packer 6. ing. Of the pair of left and right packer arms 19, the packer arm 19 positioned on the side of the waste straw tip is configured in a left-right dual system.

  The crankshaft 16 is attached with a circular drum-shaped rotating body 20 having a larger diameter than the crank arm diameter, and prevents the waste from being wound around the crank mechanism. Moreover, when the rotary body 20 rotates integrally with the crankshaft 16, the outer peripheral surface of the rotary body 20 exhibits the function of feeding the waste wall backward.

  In addition, between the left and right packer arms 19, a waste wall presence / absence sensor 21 made up of a limit switch is provided hidden inside the outer diameter of the rotating body 20. The waste straw presence / absence sensor 21 is operated by a sensing lever 22 that enters the waste straw carrying-in path and swings back and forth. The sensing lever 22 is pushed by the transport waste wall and swings backward. The presence of the exhaust straw is detected by the movement, and while the presence of the exhaust straw is detected, the hitting plate 5 of the stock sorting apparatus D is automatically activated based on the detection of the stock edge position of the incoming waste straw. When the left and right screw feed control is performed by the electric motor 23 so as to be the optimum hitting position corresponding to the length of the waste straw, and the stoppage of the waste straw is detected by the forward return of the sensing lever 22, the stock edge position Regardless of the detected information, the hitting plate 5 is held at the current position. In other words, when the combine machine A reaches the headland and the subsequent discharge of the waste straw stops, the stock end position detection means determines that it is short and the hitting plate 5 is controlled to move to the movement limit on the tip side. As described above, when there is no waste straw, the action position control of the hitting plate 5 is stopped, so that the stock edge can be struck at a suitable position from the beginning when the waste straw is carried in. is there.

  As shown in FIG. 5, below the convergence space S, a waste wall support member 25 made of a round bar closes to the lateral side of the movement locus of the needle 7 so as to receive the supplied waste wall from below. The deployment is fixed. The exhaust wall support member 25 extends from the rear rear outlet of the converging space S to the front beyond the front inlet, and corresponds to the start end portion of the converging space of the exhaust wall support member 25 and the needle 7. The stepped portion 25a is bent and formed immediately after the passing locus.

  According to this configuration, the waste straw supplied to the inlet portion of the waste straw binding device B is received and supported by the waste straw support member 25 from below, and then received in the converging space S due to the scraping action of the scraping packer 6. Since the converging space S has a large vertical width due to the drop step portion 25 a of the discharge wall support member 25, the discharge wall is pushed and supplied to the converging space S by the scraping packer 6. Falls at the falling step portion 25a, and the backward flow to the front (in the direction of the entrance to the converging space) is prevented by the dropping step portion 25a.

  Further, a transport deck 26 made of a flat plate is provided on the waste straw stocker side from the waste straw support member 25, and the height of the waste deck receiving edge of the transport deck 26 is the stepped-down portion of the waste straw support member 25. It is set at a position that is lower than the bottom surface of 25a, and the stocker side of the waste straw that has been fed into the converging space S beyond the drop step 25a is received and supported from below by the lower transport deck 26. Thus, the bulky stock side compared to the tip side is received low by the transport deck 26, so that a large amount of waste straws can be stably converged without moving.

  Above the converging space S, a separation spring 27 and a support spring 28 made of a curved leaf spring material are respectively arranged in a cantilever direction facing backward. The support spring 28 is disposed to face the transport deck 26 and receives the focusing exhaust wall at the rear part of the focusing space S, and prevents the discharging wall from escaping backward from the focusing space S during the focusing operation. At the same time, when releasing the bundle, it can bend upward and escape. Further, the separation spring 27 is disposed on the stock end side with respect to the support spring 28, and allows the passage of the waste straw supplied by being fed into the converging space S by upward elastic deformation, but the straw bundle is released. At the same time, the trailing end of the unbound binder is dragged by the bundle of straws and is prevented from being scraped by the spring tip.

  As shown in FIG. 6, a pair of ribs 12a for preventing the introduction of a drainer is provided on the lower surface of the string guide plate 12 located above the converging space S, and a needle passage hole 12b is provided between the pair of ribs. Is formed. The scraper packer 6 is disposed so as to face the string guide plate 12 from below.

  The scraper packer 6 includes a pair of left and right packer arms 31 a and 31 b formed wide in the front-rear direction and a scraper arm 32 made of a bar, and both the packer arms 31 a and 31 b are arranged on the left and right sides of the string guide plate 12. The scraper arm 32 extends from the stocker-side packer arm 31b so as to act at a position farther to the waste straw stocker side than the transport deck 26. Has been.

  An intermediate portion of the packer arms 31a and 31b is pivotally connected to the free end portion of the crank arm 34 fixed to the constantly rotating packer drive shaft 33, and is mounted on the device fixing portion so as to be swingable around the fulcrum c. The free end portion of the moving arm 35 and the lower end portions of the packer arms 31a and 31b are pivotally connected, and the distal ends of the packer arms 31a and 31b circulate and rotate with predetermined trajectories Pa and Pb by the continuous rotation of the crank arm 34. The waste straw sent by the auxiliary packer 9 is sent toward the converging space S.

  Here, the tip of the stocker side packer arm 31b is set lower than the tip of the tip side packer arm 31a, and the tip locus Pa of the tip side packer arm 31a extends to the upper side from the lower end of the rib 12a of the string guide plate 12. On the other hand, the tip locus Pb of the stocker side packer arm 31 b passes near the lower end of the rib 12 a of the string guide plate 12. According to this, the minimum interval t2 between the tip locus Pb of the stocker side packer arm 31b and the lower surface of the string guide plate 12 is smaller than the minimum interval t1 between the tip locus Pa of the tip side packer arm 31a and the lower surface of the string guide plate 12. Therefore, when the waste straw is scraped into the vicinity of the string guide plate at the tip of each packer arm, the bulky waste straw stocker side is pressed against the string guide plate 12 and the rib 12a with an excessive force. Therefore, even when a high flow rate of the waste straw transporting is performed, the waste straw biting lock phenomenon is avoided in advance between the scraping packer 6 and the string guide plate 12.

  The needle 7 is mounted so as to be rotatable about a door shaft 36, and a driving arm 38 provided on the needle driving shaft 37 and the needle 7 are interlocked and connected by an interlocking link 39. The needle drive shaft 37 is activated by inserting a one-rotation clutch K, which will be described later, and the needle 7 swings upward from the standby position by the first half of the rotation of the drive arm 38, and passes over the converging space S. A supply operation is performed, and the needle 7 swings downward by the second half rotation of the drive arm 38 and returns to the original standby position.

  Here, the operation timing of the scraping packer 6 and the needle 7 is set as follows. That is, as described above, the needle 7 basically moves in the gap in which the pair of left and right packer arms 31a and 31b in the scraper packer 6 scrape the exhaust wall back and forth, but as shown in FIG. When the tip of the packer arm 31a reaches a position corresponding to the lower end of the rib 12a of the string guide plate 12, the needle 7 passes over the packer 6 and reaches a position corresponding to the lower end of the rib of the string guide plate 12. In addition, the operation timing of the needle 7 is set slightly earlier than before.

  By doing so, the back and forth widths of the packer arms 31a and 31b in the scraper packer 6 are made smaller than before, and the back surface of the needle 7 is prevented from being exposed to the waste wall conveying path, and thus the packer arm 31a. , 31b and the back of the needle 7 are prevented from being sandwiched.

  Next, the structure of the one-rotation clutch K provided in the lower part of the transmission case 4 will be described with reference to FIGS.

  The one-rotation clutch K includes a drive rotary body 41 loosely fitted on the needle drive shaft 37, a drive protrusion 42 protruding from the side surface of the drive rotary body 41, a disk-like driven rotary body 43 fixed to the needle drive shaft 37, The driven rotating body 43 is provided with a clutch arm 45 pivotally supported in a fixed range around a fulcrum d and urged to swing in a fixed direction by a spring 44. The clutch arm 45 swings. Thus, the follower 46 composed of the idler roller provided at the free end is configured to move inward and outward in the radial direction and to move in and out of the rotation locus of the drive protrusion 42. When the clutch arm 45 is swung backwardly against the spring 44, the “clutch disengaged” state in which the driven body 46 is disengaged from the rotation locus of the drive protrusion 42 and only the drive rotating body 41 rotates. Brought about. When the clutch arm 45 is urged and swung by the spring 44, the driven body 46 enters the rotation locus of the drive protrusion 42, and the drive protrusion 42 abuts and presses the driven body 46 from the rear. A “clutch-engaged” state in which the driven rotating body 43 rotates together with the driving rotating body 41 is brought about. The drive rotator 41 is a gear that is meshed with a gear 47 fixed to the packer drive shaft 33 and always rotates in the opposite direction to the packer drive shaft 33.

  A spring support member 48 is loosely supported by the packer drive shaft 33, and a clutch start lever 49 is pivotally supported by the spring support member 48 about a fulcrum e. The clutch activation lever 49 is oscillated and urged clockwise in the figure by a convergence pressure setting spring 50 interposed between the clutch activation lever 49 and the compression pressure spring. Is being used. The clutch activation lever 49 is provided with an engagement protrusion 51 that can be engaged with an engagement claw 45 a formed on the clutch arm 45.

  A door arm 52 on which the position of the sensing door 8 can be adjusted is fixed to the outside of the case of the door shaft 36, and a clutch operating arm 53 is fixed to a portion of the door shaft 36 inside the case. A pin 54 provided at the tip of the operation arm 53 is engaged with a long hole 55 provided in the clutch starting lever 49, and the clutch starting lever 49 is oscillated and oscillated clockwise by a focusing pressure setting spring 50 in the drawing. As a result, the door arm 52 is urged and swung counterclockwise in the figure.

  A circular cam surface 43a and a recessed cam 43b are formed on the outer periphery of the driven rotor 43, and the spring support member 48 is equipped with a cam roller 56 facing the outer periphery of the driven rotor 43. The spring support member 48 is rotated around the packer drive shaft 33 by the rotation of the rotating body 43.

  The one-rotation clutch K is configured as described above. Next, the operation thereof will be described.

  As shown in FIG. 9, the door arm 52 urged by the focusing pressure setting spring 50 is in the swing-up position while the focusing pressure of the exhaust wall focused in the focusing space S is small, and is engaged and interlocked with the door arm 52. By engaging and supporting the engaging claw 45a of the clutch arm 45 with the engaging protrusion 51 of the clutch starting lever 49, the "clutch disengaged" state in which the driven body 46 is disengaged from the rotation locus of the driving protrusion 42 is also maintained. It has been dropped.

  When the focusing pressure acting on the sensing door 8 becomes larger than the pressure set by the focusing pressure setting spring 50, the door arm 52 is swung clockwise in the figure, and in conjunction with this, the clutch activation lever 49 resists the focusing pressure setting spring 50. Then, when the engagement protrusion 51 is disengaged from the engagement 45a, the clutch arm 45 is swung by the spring 44, and the driven body 46 moves within the rotation locus of the drive protrusion 42. This completes the preparation for clutch engagement.

  As shown in FIG. 10, the drive projection 42 starts to press the follower 46 when the scraper packer 6 moves to the vicinity of the scraping start position after the scraping operation in which the door arm 52 is swung. When the rotation of the drive rotator 41 is transmitted to the driven rotator 43, the clutch is engaged, and the needle drive shaft 37 to which the driven rotator 43 is fixed starts to rotate. Further, the rotation of the needle drive shaft 37 is transmitted to the timing gear 57 at the upper part of the case at a transmission ratio of 1: 1 by a chain transmission means (not shown) incorporated in the transmission case 4, and the knot mechanism 10 that operates in synchronization with the needle 7 and the release. Mechanism 11 operates as described above.

  In this case, as shown in FIG. 11, the cam roller 56 of the spring support member 48 moves from the circular cam surface 43a to the recessed cam portion 43b as the driven rotating body 43 rotates, and the cam roller 56 moves to the recessed cam portion 43b. , The spring support member 48 rotates backward in the counterclockwise direction in the drawing, the spring pressure disappears, the door arm 52 swings downward, and the sensing door 8 opens the rear outlet of the focusing space S. .

  Then, when the needle drive shaft 37 rotates about half a half, the needle 7 that has finished supplying the string moves backward and returns, and when it is near the end of one rotation, as shown in FIG. 12, the cam roller 56 that has fallen into the recessed cam portion 43b. Is pushed up to the circular cam surface 43a with the rotation of the driven rotating body 43, and the spring support member 48 is forcibly rotated clockwise in the figure, whereby the urging force by the focusing pressure setting spring 50 is generated again, and the clutch is activated. The lever 49 is urged and rotated clockwise in the drawing, and the door arm 52 is swung up to the original sensing position. Further, the engagement protrusion 51 enters the movement locus of the engagement claw 45 a provided in the clutch arm 45 by the clockwise rotation of the clutch activation lever 49 and waits for its arrival.

  Then, the driven rotating body 43 further rotates in a state where the engaging claw 45 a is received by the engaging projection 51 waiting and waiting at a predetermined position, so that the clutch arm 45 moves around the fulcrum d against the spring 44. The driven body 46 provided in the clutch arm 45 is moved relative to the needle drive shaft axis and is forcibly removed from the drive projection 42, thereby rotating from the drive rotary body 41 to the driven rotary body 43. A “clutch disengagement” state is established in which the transmission is cut off.

  Since the one-rotation clutch K is disengaged in a very short time, as described above, when the door arm 52 is swung up and swung to the original sensing position as the one-rotation clutch K is disengaged. In order to prevent this, the door arm 52 swings downward, that is, in the direction in which it operates by sensing the focusing pressure, and the clutch is engaged again, so-called “double clutch” may occur. The following structure is added.

  That is, a check arm check arm 58 protrudes from the clutch activation lever 49 toward the needle drive axis, and a check protrusion 59 is provided on the driven rotating body 43. This check arm 58 is shown in FIG. As shown in FIG. 4, when the cam roller 56 of the spring support member 48 starts to ride on the circular cam surface 43a, it is arranged so as to face the restraining protrusion 59 and when the door arm 52 returns to the original sensing position. Then, the check projection 59 is opposed to the tip of the check arm 58 so that the clutch starting lever 49 is prevented from rotating from the clutch disengagement operation position to the clutch engagement side.

  When the one-rotation clutch K is disengaged as described above, the needle 7 is stopped at the original standby position by stopping the driving of the needle drive shaft 37. In this one-rotation clutch disengaged state, the needle drive shaft 37 is in a free state. The needle 7 enters the converging space S due to a return reaction or the like, and is caught by a subsequent discharge wall and cannot be returned, and the discharge wall may be clogged. However, the needle 7 is always urged toward the standby position. This prevents the needle 7 from protruding unexpectedly. That is, a tension coil spring 63 is stretched between a spring receiving pin 61 provided as a spring receiving portion on the needle 7 and a spring receiving pin 62 fixedly arranged as a spring receiving portion on the transmission case side. 7 is always urged toward the standby position. Here, the wire is bent between one hook portion 63a of the spring 63 and the spring receiving pin 61 of the needle 7 and between the other hook portion 63b of the spring 63 and the spring receiving pin 62 on the fixed side. The intermediate members 64 and 65 are interposed, and the stress generated due to the friction caused by the relative rotation with the spring receiving pins 61 and 62 due to the swinging operation of the needle 7 is caused by the hook portions 63a and 63b of the spring 63. It has been avoided to act directly on.

  As shown in FIGS. 13 and 14, the straw bundle releasing device E includes a transport chain 71 that is always driven by power extracted from the transmission case 4, and a clamp that is disposed so as to be able to approach and move away from the transport surface. The rail 72 and the discharge guide 73 arranged so as to surround the conveying terminal end portion, the wall bundle R discharged backward from the discharge wall binding device B is obliquely rearward with its stock facing downward The roll bundle R is rotated by giving a carrying resistance biased to the carrying bundle by a plurality of (three in this example) resistance projections 74 provided on the holding rail 72 near the conveyance end. The straw bundle S expanded by the stock force due to the centrifugal force accompanying the rotation is released to the ground while being guided by the release guide 73, so that the straw bundle R can be left standing in the field. Are so that configuration, can be directly ground dried dry straw bundle R released into cutting marks. The holding rail 72 includes a main rail portion 72a supported via a pair of support rods 75a and a spring 76a, and a rear rail portion 72b supported via a support rod 75b and a spring 76b. The rail portion 72a and the rear rail portion 72b can be independently vertically displaced with little influence on each other, and the resistance projection 74 is provided on the rear rail portion 72b. As a result, the rear rail portion 72b sandwiching the wall bundle R is reliably subjected to rotation by the rear rail portion 72b without being affected by the main rail portion 72a that is retracted and displaced by the subsequent wall bundle R. It has become.

  The present invention can also be implemented in the following forms.

  (1) Even if the height of the transport deck 26 is positioned at the upper and lower intermediate heights of the drop stepped portion 25a of the discharge wall support member 25, the function of suppressing the movement of the converged discharge wall toward the tip side is exhibited to some extent. To do.

  (2) The knot mechanism 7 and the discharge mechanism 8 can be provided below the convergence space S, and the waste wall binding device having the specifications in which the scraper packer 3 and the needle 4 are disposed above the convergence space S can be applied. .

Side view of combine rear Top view of the combine rear Side view of waste wall binding device Rear view of waste wall binding device Expanded side view of the waste straw binding device Rear view of the main part Cross section of auxiliary packer Side view of a scraper packer Side view of the single-rotation clutch in a disengaged state Side view showing activated state of one-rotation clutch Side view showing engaged state of one-rotation clutch Side view showing a state where the engaged state of the one-rotation clutch is near the end Side view of a straw bundle releasing device Longitudinal sectional view showing the main part of the straw bundle releasing device

Explanation of symbols

6 Scratch Packer 7 Needle 10 Knotting Mechanism 11 Release Mechanism 25 Waste Wall Supporting Member 25a Dropping Step 26 Transport Deck S Focusing Space

Claims (3)

A knotting mechanism and a discharge mechanism are provided on one side of the focusing space where the waste straw is collected in a sideways posture, and a scraping packer and a string supply needle are provided on the other side of the focusing space. In the combine waste straw binding device,
In the vicinity of the binding position in the longitudinal direction of the waste wall, a waste wall support member for receiving the waste wall from below is provided from the front part of the convergence space to the rear end portion of the convergence space S, and the convergence space start of the waste wall support member. In the part corresponding to the part, a depression step where the back side of the converging space falls is formed, and a transport deck for receiving the waste straw from below is installed on the waste straw stocker side from the installation position of the waste straw support member, and this transportation An apparatus for binding waste straws for a combine, characterized in that a height for receiving a waste wall of the deck is set to be lower than a height for receiving a waste wall at a front portion of the stepped-down step portion of the waste wall support member.   2. The combiner wastewater binding apparatus according to claim 1, wherein a height of the wastewall receiving portion of the transport deck is set to be lower than a bottommost part of the drop step portion of the wastewall support member.   The knot mechanism and the discharge mechanism are disposed above the focusing space, and the scraping packer and the string supply needle are disposed below the focusing space, respectively, and the drop step portion of the discharge wall support member 3. The combine drainer binding apparatus according to claim 1 or 2, wherein the combiner is disposed immediately after the trajectory of the needle.

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