JP2005176697A - Grain elevator supporting mechanism for combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grain elevator supporting mechanism enabling a grain elevator to be surely supported without requiring any labor before and after using the grain elevator and every time the grain elevator is operated to its housing position. <P>SOLUTION: The grain elevator supporting mechanism 13 for a combine harvester has the following construction and mechanism: There are provided a receiving table 16 to be loaded with the grain elevator 12 for unloading grains from a grain tank out of the machine and a locking member 22 movable to a locking position and an unlocking position. On loading the grain elevator 12 on the receiving table 16, the locking member 22 at the locking position and the holding part 24 for the grain elevator 12 are engaged with each other to ensure the grain elevator 12 to be held on the receiving table 16. There is provided a tool 22a for artificially operating the locking member 22 to the unlocking position, and there is also provided a moving mechanism 22c having the function that when the grain elevator 12 is lifted in such a condition that the locking member 22 is operated to the unlocking position by the tool 22a, the locking member 22 is moved from the unlocking position to the locking position as the grain elevator 12 rises. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a harvesting device support mechanism for a combine equipped with a harvesting device that carries grain out of the machine from a grain storage unit.

  Conventionally, this type of combine cerealing device has a configuration in which the vertical feed portion and the horizontal feed portion are connected so as to be swingable, and the horizontal feed portion can be changed in orientation and upward angle to a posture suitable for carrying out the grain. Yes. A swing operation mechanism that swings the vertical position of the lateral feed portion is accompanied by an operation force assist mechanism such as a gas spring in order to assist the operation force.

  When working or traveling on the road, the cerealing device is stored in a predetermined position, but the operating force assisting mechanism acts on the cerealing device that is slightly swung by the vibration generated during traveling. There has been a problem that swinging of the cerealing device is increased, and the cerealing device in the stored state is disengaged from the predetermined storage position. In order to solve this problem, as disclosed in Patent Document 1, there is a band body (22 in FIG. 3 of Patent Document 1) that holds the cerealing device and restricts oscillation due to vibration.

JP-A-11-206234 (22 in FIG. 3)

However, if it is the composition like the above-mentioned patent documents 1, the work which removes or attaches the band body (22 in Drawing 3 of patent documents 1) of the grain raising device before and after use of the grain raising device is necessary. Since the transfer of work takes time, there is a problem that the work efficiency is lowered.
In addition, even if the cerealing device is moved to the stowed position after the grain unloading operation has been completed, if the forklifting device fixing work by attaching the band body is forgotten, the lateral feeding portion of the cerealing device will be There was a problem that it could swing and hinder the running.

  Therefore, in view of the above circumstances, the present invention provides a support mechanism for a cerealing device that can support the cerealing device without fail before and after using the cerealing device and can be reliably supported for each operation to the storage position of the cerealing device. The purpose is to provide.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in the combine mashing device support mechanism including the mashing device for carrying the cereal out of the machine from the cereal storage unit.
A cradle for placing the cerealing device and a lock member movable to the lock position and the release position are provided. When the cerealing device is placed on the cradle, the lock member at the lock position and the held portion of the cerealing device And the cerealing device is configured to be held by the cradle, and an operating tool for manually operating the lock member at the release position is provided, and the lock member is operated to the release position by the operation tool. When the cerealing device is raised, a moving mechanism is configured to move the lock member from the release position to the lock position as it rises.

(Function)
According to the first aspect of the present invention, when the cerealing device is placed on the cradle, the lock member at the lock position and the held portion of the cerealing device are engaged, and the cerealing device is held on the cradle.
As described above, since the cerealing device can be operated to the storage position and the cerealing device can be held on the cradle, the human operation for holding the cerealing device after operating the cerealing device to the storage position. Work is not required. That is, the position of the cerealing device is automatically held by an operation to the storage position.

  In addition, when the groining device is lifted while the lock member is operated to the release position by the operation tool, the groining device has a moving mechanism that moves the lock member from the release position to the lock position as the lift occurs. After the device is lifted from the cradle, the lock member is in the locked position. Accordingly, when the cerealing device is placed on the cradle again after the grain is carried out, the lock member is in the lock position. If the cerealing device is placed on the cradle in this state, the cerealing device The to-be-held part is engaged, and the cerealing device is held by the cradle. In this way, when the cerealing device is raised and then supported again in the storage position, there is no need to artificially move the position of the lock member. That is, when the cerealing device is raised, the lock member automatically moves to the lock position.

(effect)
According to the first feature of the present invention, the cerealing device is automatically held in position by the operation to the storage position, and when the cerealing device is raised, the lock member automatically moves to the locking position. Each time the cerealing device is placed on the cradle, the position is automatically maintained, the operation for maintaining the position of the cerealing device can be omitted, and before and after the grain unloading work using the cerealing device Work efficiency is improved. In addition, since the forgetting operation of the position holding operation is eliminated, a healthy traveling work is achieved.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the first feature of the present invention.
A biasing mechanism is provided that selectively switches between a lock biasing state in which the lock member is biased to the lock position and a release biasing state in which the lock member is biased to the release position depending on the position of the lock member.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
Since it has a biasing mechanism that selectively switches between the lock biasing state in which the lock member is biased to the lock position and the release biasing state in which the lock member is biased to the release position, depending on the position of the lock member. In each of the lock position and the release position, the movement limit position in each direction is biased, and the lock member appears in a stable position. Therefore, the lock member engaged with the held portion of the cerealing device at the lock position is less likely to move from the lock position, and the lock member and the held portion of the cerealing device are stably engaged. Yes.
If the lock member moves from the position where the release urging state and the lock urging state are switched by the moving mechanism to the release urging state side as the masher rises, the lock member moves to the release position by the urging force. Can be completed. Therefore, the moving mechanism only has to move the lock member to a position exceeding the position where the urging state of the urging mechanism is switched.

(effect)
According to the second feature of the present invention, the “effect of the invention” of the first feature of the present invention described above is provided in the same way as the first feature of the present invention. “Effect of the invention” is provided.
According to the 2nd characteristic of this invention, since the locking member and the to-be-held part of a cerealing apparatus are engaging stably, the cerealing apparatus is stably supported by the accommodation attitude | position.
Further, the moving mechanism may be configured to move the lock member to a position exceeding the position where the urging state of the urging mechanism is switched. Therefore, restrictions on the configuration of the moving mechanism are reduced, and restrictions on designing the moving mechanism are reduced.

[III]
(Constitution)
A third feature of the present invention resides in the following configuration in the first or second feature of the present invention.
The movement mechanism is configured so that the lock member moves from the release position to the lock position by mechanically transmitting the ascent operation of the cerealing device to the lock member.

(Function)
According to the third aspect of the present invention, as in the case of the first or second aspect of the present invention, the preceding item [I] or [II
In addition to this, the following “action” is provided.
Since the movement mechanism is configured so that the lock member moves from the release position to the lock position by mechanically transmitting the ascent operation of the cerealing device to the lock member, another mechanism for operating the movement mechanism is provided. There is no need to provide power. Therefore, simplification of the configuration of the whipping device support mechanism is achieved.

(effect)
According to the third feature of the present invention, the “effect of the invention” of the first or second feature of the present invention described above is provided in the same manner as the first or second feature of the present invention. In addition, the following “effects of the invention” are provided.
According to the 3rd characteristic of this invention, since the simplification of the structure of a whipping apparatus support mechanism is achieved, a threshing apparatus support mechanism can be comprised compactly, and failure rate will be that a structure is simple. And cost reduction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show the combine. In this combine, a cutting pretreatment device 3 is mounted on a front portion of a body frame 2 supported by a pair of left and right crawler travel devices 1 so as to move up and down, and a threshing device 4, a boarding operation unit 5, a driving unit 6, and a Glen tank. 7 etc. are mounted on the fuselage frame 2 and configured.

  In the grain tank 7, the grain threshed by the threshing device 4 is fed and stored by the lifting screw conveyor 8 and stored. The grain stored in the Glen tank 7 is conveyed to the outside by the unloader device 9 and discharged. That is, the unloader device 9 moves the bottom screw conveyor 10 disposed along the bottom of the Glen tank 7 in the front-rear direction and the grain conveyed rearward by the bottom screw conveyor 10 at the rear side location of the Glen tank 7. The vertical feed screw conveyor 11 is fed to the vertical feed screw conveyor 11 and the horizontal feed screw conveyor 12 is fed laterally to discharge the grain fed by the vertical feed screw conveyor 11.

  As shown in FIGS. 1 and 2, the transverse feed screw conveyor 12 is provided so as to be swingable up and down by the electric cylinder D with respect to the longitudinal feed screw conveyor 11, and the longitudinal feed screw conveyor 11 is placed in the Glen tank 7. On the other hand, it is rotatably provided by an electric motor around a vertical axis along the vertical direction. In the figure, G is a gas spring which gives an auxiliary lifting force when the transverse screw conveyor 12 is raised and lowered. The transverse feed screw conveyor 12 is configured to be switchable between a predetermined storing posture and a desired grain discharging posture by the above-described undulation and rotation around the vertical axis, and the switching is performed on an operation panel of the boarding operation unit 5 or the like. This is done by operating the provided operation switch. Then, when the transverse feed screw conveyor 12 is not used for the grain carrying out operation, it is placed in the storage posture of the posture extending forward along the grain tank 7 and the intermediate portion thereof is placed on the support member 13 and held. Keep it. Hereinafter, the support member 13 will be described.

  As shown in FIGS. 1, 2, 3, and 4, the support member 13 is configured by providing a receiving portion 15 at an upper end portion of a support column 14 that is erected in a state of being fixed to the airframe. This receiving portion 15 is in a standing posture at the upper end portion of an upper column portion 14b made of a round pipe that is vertically fitted in a base column portion 14a made of a round pipe material standing upright in a fixed state on the body frame 2 or the like. In this state, the support plate body 16 made of a relatively thick plate material joined by welding is provided. The base column part 14a and the upper column part 14b are provided with a pair of base column part through holes 14a1 for inserting the insertion pins 20 and a plurality of pairs of upper column part through holes 14b1. In a state where any one of the upper column part through holes 14b1 arranged in the height direction in the upper column part 14b and the base column part through hole 14a1 are aligned, the base column part 14a and the upper column part 14b are penetrated through the insertion pin 20. When connected, the receiving portion 15 is held at a predetermined height, and the height of the receiving portion 15 can be set stepwise.

  The support plate 16 has a recess 17 in which a notch is formed in a substantially V-shape that opens upward in the surface direction of the support plate 16 so that the transverse feed screw conveyor 12 can be supported below, and the recess 17 and an elastic body 19 made of an elastic resin material such as rubber fitted to the edge portion 18 from above. As shown in FIG. 5, the elastic body 19 is a long member that is a relatively thick member having a downward U-shaped cross section in a direction orthogonal to the longitudinal direction. The elastic body 19 is engaged with the left and right edge portions 18 of the recess 17 shown in FIG. 3 of the support plate 16 in a state in which the locking groove 19a is fitted from above.

  Further, as shown in FIG. 3, the upper end 21 </ b> U and the lower end are provided at both ends of the left and right edge portions 18 so that the outward movement of the elastic body 19 in the direction along the edge portion 18 is restricted. 21D protrudes. The elastic body 19 is press-fitted between the upper end 21U and the lower end 21D by configuring the elastic body 19 slightly longer than the length of the edge portion 18 between the upper end 21U and the lower end 21D. Thus, the elastic body 19 is difficult to come off from the edge portion 18. In addition, when the length of the edge portion 18 between the upper end 21U and the lower end 21D is substantially equal to the length of the elastic body 19, or even if the elastic body 19 is slightly shorter, the position is regulated by the upper end 21U and the lower end 21D. Thus, the elastic body 19 is difficult to come off from the edge portion 18.

  The transverse feed screw conveyor 12 is placed in the concave portion 17 of the support plate 16 while being buffered by the elastic body 19 in the storage posture. And in order to lock the transverse feed screw conveyor 12 in a state where it is placed in the concave portion 17 through the connecting metal fitting 24 of the transverse feed screw conveyor 12 so that the transverse feed screw conveyor 12 does not jump up due to vibration of the airframe or the like. The lock member 22 is attached to the support plate 16. The lock member 22 is swingably mounted around the mounting pin 23 in a plane parallel to the support plate 16, and an operation portion 22 a for manually swinging the lock member 22 is formed. A rocking pin 25 that rocks integrally with the lock member 22 is erected toward the support plate 16 and is engaged with a rocking guide 26 that the support plate 16 has, so that the rocking range of the lock member 22 is reduced. It is regulated by the engagement between the swing pin 25 and the swing guide 26.

  Next, the urging mechanism will be described. In the swing pin 25, a swing end portion 27 a, which is one end of a toggle biasing spring 27, is wound on the tip side from the engagement position with the support plate body 16, and the swing pin 25 and the toggle biasing spring are wound. 27 is connected so that relative rotation is possible. A groove is formed in the circumferential direction of the swing pin 25 further on the tip side than the winding position of the swing end portion 27a of the swing pin 25, and the swing end portion 27a and the washer 28b are connected to the swing end portion 27a. The connection with the oscillating pin 25 is configured not to be disconnected. The fulcrum end 27b, which is the other end of the toggle biasing spring 27, is wound around a headed pin 29 erected at the bottom of the support plate 16, and the swing end 27a, which is the other end. Similarly to the above, it is pivotably connected around the headed pin 29.

  When the lock member 22 is in the locked position by the urging mechanism configured as described above, the swing pin 25 is in contact with the lock side end portion 26L of the swing guide 26, and the lock member 22 is released later. When in the position, the swing pin 25 is in contact with the release-side end portion 26 </ b> R of the swing guide 26. The position where the direction of the urging force of the urging mechanism is switched (hereinafter referred to as top dead center) is the position where the swing pin 25 swinging around the mounting pin 23 comes closest to the headed pin 29. The urging mechanism switches between the lock urging state and the release urging state at the top dead center. The magnitude of the urging force takes a maximum value when the swing pin 25 is at the top dead center. That is, the magnitude of the urging force increases from the position where the swing pin 25 contacts the lock-side end portion 26L toward the above-described top dead center, and beyond the top dead center, contacts the release-side end portion 26R. It becomes smaller gradually toward the position.

  As shown in FIG. 3, when the lateral feed screw conveyor 12 is in the housed state, the lock member 22 is in the locked position where it engages with the connecting fitting 24 at the engagement protrusion 22b. By the aforementioned urging mechanism, the swing pin 25 is urged to the lock position, and the contact with the lock side end portion 26L is maintained. In addition, since the lower surface of the engagement protrusion 22b is configured to be inclined downward in the direction of the opening 22d, the lock member 22 in the locked position urged by the urging mechanism is connected to the connecting bracket 24 in the engagement protrusion 22b. Is difficult to disengage.

  When the unloader device 9 is used, the transverse feed screw conveyor 12 in the stored state is switched to the grain discharging posture by operation of an operation switch or the like provided on the operation panel or the like of the boarding operation unit 5. In order to make this switching operation effective, it is necessary to release the engagement between the connecting metal fitting 24 of the transverse feed screw conveyor 12 in the housed state and the engagement protrusion 22b of the lock member 22 in the lock position. By engaging the operating portion 22a of the lock member 22 downward and moving the lock member 22 to the release position shown in FIG. 6, the engagement between the engagement protrusion 22b and the connecting bracket 24 can be released.

  The degree of bending of the lower surface of the engagement protrusion 22b provided so that the engagement between the engagement protrusion 22b and the connection fitting 24 is difficult to be disengaged when the lock member 22 is in the locked position is such that the release operation of the lock member 22 is not hindered. It has become. Specifically, the lower surface (bending state) of the engagement protrusion 22b is larger than the curvature of the arc, which is a swing locus around the attachment pin 23 of the engagement portion (contact point) of the engagement protrusion 22b and the connection fitting 24. It has a large curvature.

  As indicated by a solid line and a dotted line in FIG. 6, as the lock member 22 is moved to the release position by the operation of the operation portion 22a, the swing pin 25 is moved from the position in contact with the lock side end portion 26L to the release side end portion 26R. It moves to the position where it contacts. At this time, if the operating portion 22a is operated to swing the swing pin 25 to a position exceeding the top dead center, the biasing mechanism is switched from the lock biasing state to the release biasing state. It can be moved to the release position by the urging force. Therefore, the operation of the operation unit 22a may be performed up to the top dead center of the urging mechanism. The lock member 22 moved to the release position as described above is urged by the urging mechanism in the release urging state, and is stable at the release position where the swing pin 25 contacts the release side end portion 26R. It is positioned.

  A mechanism by which the lock member 22 automatically returns to the lock position when the transverse feed screw conveyor 12 in the stowed position is raised will be described with reference to FIGS. When the transverse screw conveyor 12 is raised by an operation of an operation switch or the like provided on the operation panel of the boarding operation unit 5 in order to set the unloader device 9 to the grain discharging posture, naturally, the connecting fitting 24 is also raised. At this time, the lock member 22 in the release position indicated by the solid line in FIG. 6 is raised and engaged with the connection fitting 24 via the protrusion 22c. The lower surface of the raising protrusion 22c with which the coupling fitting 24 engages is configured to have an inclined surface that is raised from the engagement position with the coupling fitting 24 and faces upward toward the tip of the projection 22c. As the connecting metal fitting 24 to be raised rises, the lock member 22 oscillates around the mounting pin 23 against the urging force of the urging mechanism in the release urging state via the raising protrusion 22c (FIG. 7). reference). When the rise of the connection fitting 24 continues, the rocking member 22 also swings, and when the engagement protrusion 24c is released from the leading end of the protrusion 22c and the engagement with the protrusion 22c is lost, the connection fitting 24 passes through the opening 22d from the receiving portion 15. Dissociate completely.

  The length of the inclined surface of the lower surface of the raising protrusion 22c is such that the rocking pin 25 passes through the top dead center by the rocking of the lock member 22 until the engagement between the connecting metal fitting 24 and the raising protrusion 22c is lost. It is configured. Therefore, until the engagement between the two is lost, the urging state of the urging mechanism is switched from the release urging state to the lock urging state, and a rotational operation force of the lock member 22 is generated due to the rise of the connecting bracket 24. Even if not, the lock member 22 can be moved to the lock position by the urging force of the urging mechanism. The lock member 22 moved to the lock position is urged by the urging mechanism in the lock urging state, and is stably positioned at the lock position where the swing pin 25 is in contact with the lock side end portion 26L.

  As described above, after the lock member 22 is operated to the release position, the lock member 22 is automatically returned to the lock position by moving the cross feed screw conveyor 12 upward.

  Next, based on FIG. 8, a mechanism in which the connecting fitting 24 automatically engages with the lock member 22 when the transverse feed screw conveyor 12 is lowered to the storage position will be described. When the transverse screw conveyor 12 is placed on the receiving portion 15 by operating an operation switch or the like provided on the operation panel or the like of the boarding operation portion 5 in order to place the unloader device 9 in the retracted position, as described above, the lock member 22 is The lock member 22 is in the lock position because it automatically returns to the lock position when the transverse feed screw conveyor 12 is raised. By the lowering operation of the lateral feed screw conveyor 12, the connection fitting 24 provided on the lateral feed screw conveyor 12 comes into contact with the cam surface 22e of the lock member 22 at the lock position. At this time, the lock member 22 is urged to the lock position by the urging mechanism in the lock urging state, but the transverse feed screw conveyor 12 is further lowered from the position where the coupling metal 24 contacts the cam surface 22e. When operated, the laterally moving screw conveyor 12 continues to descend so that the connecting bracket 24 pushes the engaging protrusion 22b while swinging the lock member 22 in the direction toward the release position against the urging force of the urging mechanism. To do.

  The cam surface 22e is a smooth curved surface having an inclination with respect to the lowering direction of the connection fitting 24 so that the lock member 22 swings in the direction of the release position when the connection fitting 24 is pressed down against the cam surface 22e. The length of the inclined surface in the curved surface direction is sufficiently long so that the connecting bracket 24 can come into contact with the cam surface 22e even when the descending position of the transverse feed screw conveyor 12 is shifted in the width direction of the concave portion 17. Has been.

  Further, the rocking of the lock member 22 due to the lowering of the coupling metal 24 is performed within the range of the lock biased state, in other words, the maximum rocking position of the lock member 22 due to the lowering of the coupling metal 24 is at the top dead center. The shape of the cam surface 22e and the engagement protrusion 22b and the position of the top dead center are configured so as not to exceed. Therefore, the lock member 22 that continuously swings in the direction of the release position as the connecting fitting 24 descends receives a biasing force in the lock position direction that increases as the swinging. When the connection fitting 24 continues to descend in this state, the connection fitting 24 pushes the engagement protrusion 22b and passes through the opening 22d. At the same time, the lock member 22 returns to the lock position, and the connecting metal fitting 24 is in the storage state shown in FIG. Since the lock member 22 is displaced the most from the lock position immediately before starting the swing return, the urging force of the urging mechanism for returning the lock member 22 to the lock position is larger than the urging force at the lock position. ing. Since the lock member 22 that has returned to the lock position is in a state of being biased and in contact with the lock-side end portion 26L, the position is stably held at the lock position.

  As described above, by lowering the transverse feed screw conveyor 12 to the storage position, the connecting fitting 24 can be automatically engaged with the lock member 22 at the lock position.

[Another Embodiment of the Invention] In the above-described embodiment, the lock member 22 is attached to the support plate 16, but it may be attached to another fixing portion of the machine body or attached to the transverse feed screw conveyor 12. Good. In these cases, the connecting metal fitting 24 that engages with the lock member 22 is attached to the corresponding position. Further, in place of the urging mechanism by the toggle urging spring 27 and the moving mechanism by the mechanical linkage and interlocking of the lock member 22 and the connecting bracket 24, the lowering operation of the lateral feed screw conveyor 12 is performed by a separate power mechanism and control mechanism. The lock member 22 may be configured to be moved according to the operation.

Overall side view showing the combine Overall plan view showing the combine Longitudinal front view showing support member Longitudinal side view showing support member Perspective view of elastic body before mounting Longitudinal front view showing movement of the lock member from the lock position to the release position Longitudinal front view showing movement of the lock member from the release position to the lock position Longitudinal front view showing automatic lock operation by lowering operation of cerealing device to storage state

Explanation of symbols

7 Grain storage unit 12 Flouring device 13 Graining device support mechanism 16 Base 22 Lock member 22a Operating tool 22c Moving mechanism 24 Holding portion

Claims (3)

A cradle for placing a cerealing device for carrying grain out of the machine from the grain storage unit, and a lock member movable to a lock position and a release position,
When the cerealing device is placed on the cradle, the lock member in the locked position and the held portion of the cerealing device are engaged, and the cerealing device is held by the cradle. ,
An operating tool for artificially operating the lock member at the release position is provided, and when the cerealing device is raised in a state where the lock member is operated to the release position by the operation tool, the lock member is Combine harvester support mechanism having a moving mechanism for moving from a release position to a lock position.   A biasing mechanism that selectively switches between a lock biasing state in which the lock member is biased to a lock position and a release biasing state in which the lock member is biased to a release position depending on the position of the lock member. Item 1. A combine mashing device support mechanism according to Item 1.   The said moving mechanism is comprised so that the said lock member may move to a lock position from a cancellation | release position by mechanically transmitting the raising operation | movement of the said cerealing apparatus to the said lock member. Combine harvester support mechanism.

Images