JP4820216B2 - Combine weeding equipment - Google Patents

Description

  The present invention relates to a combine weeding device configured to be swingable by switching a weed fold between a weeding action posture and a retracted posture.

  In a conventional combine weeding device, as disclosed in Patent Document 1, for example, a cutting lever is equipped with an operation lever for moving a weed pod out, and a driver sitting on a driver seat extends his left hand. A lever type that swings back and forth is known.

JP 2003-153629 A

  In recent years, along with improvements in the functions of electric actuators such as electric motors, the miniaturization and cost reduction have progressed. Instead of a structure that switches the heel to a weeding action position and a retracted position, a structure that employs a structure that uses an electric actuator such as an electric motor to change the position of the weed moth has been proposed.

There is little space for electric actuators around the weed fence, and the weed fence is located at a low position that is easily affected by mud and dust from the harvesting operation of the combine. Therefore, when changing the posture of the weed ridge using an electric actuator, it is conceivable to arrange the electric actuator via a linkage mechanism such as a linkage rod. Thus, placing the electric actuator through a linkage mechanism such as a linkage rod, as with the operation of the electric actuator being transmitted to the partial grass rod via a linkage mechanism such as a linkage rod, the external force acting on the minute grass rod Is also transmitted to a linkage mechanism such as a linkage rod or an electric actuator.

  The weed pods are provided to avoid uncut crops falling to the machine body when they are harvested and being caught in the harvesting part or being stepped on by the crawler traveling device. Sufficient external force is also expected when hitting an obstacle. Therefore, even if an external force acts in the direction in which the weed shears swing, if the weed shears swing according to the external force, excessive external force will not work on the weed shears and the linkage mechanism. There will be no damage to the weed ridges or the linkage mechanism. However, if an external force is applied to the weed cocoon in a direction different from the direction in which the weed cocoon swings, for example, from the front-rear direction of the aircraft, the external force cannot be absorbed and the weed moth itself is damaged. In addition, there is a risk of damaging a linkage mechanism such as a linkage rod linked to the weed ridge or an electric actuator.

  An object of the present invention is to realize a combine weeding device in which a linkage mechanism, an electric actuator, and the like constituting the weeding device are hardly damaged by devising the structure of the weeding device using the electric actuator.

[I]
(Constitution)
The first feature of the present invention is that the weed pods installed on the outer side of the one side in the cutting part can be switched to swing between the weeding action position protruding laterally outward and the retracted position retracted to the cutting part side. In the combine weeding device that is configured, the configuration is as follows.
Equipped with an electric actuator that can operate forward and reverse,
The operation arm that swings integrally with the weed pod is rotated around the swing axis about the front and rear of the fuselage on the upper part of the bracket that is fixed in the cantilever direction with the lower end fixed to the cutting part. Support freely,
The portion of the operating arm that extends obliquely downward and outward from the body in the weeding posture of the weed ridge extends from the swing axis of the operation arm to the outside of the body from the outer end of the bracket. The end of the swing pipe of the weed shears is connected, and the inside of the body from the swing axis of the operation arm that is inclined obliquely upward in the body direction by the weeding posture of the weed shears The part extended to the electric actuator and the electric actuator are linked by a linkage mechanism.

(Function)
According to the first feature of the present invention, the operation arm that swings integrally with the weed ridge extends from the swing axis to the inside of the machine body, and can be forward / reversely operated with a portion of the operation arm that is extended to the inside of the machine body. By linking the electric actuator with the linkage mechanism, even if an external force is applied to the weed shears in a direction different from the direction in which the weed shears swing, for example, from the front-rear direction of the body, by deforming, the boundary of the swing axis, the linking mechanism and an electric actuator that is linked to extending therefrom portion pivot shaft heart inside aircraft operating arm, the external force acting on the minute grass rod is not easily transmitted.

(The invention's effect)
According to the first feature of the present invention, it is difficult for the external force acting on the weed ridges to be transmitted to the linkage mechanism and the electric actuator, so that the linkage mechanism and the electric actuator can be prevented from being damaged. For this reason, even if an excessive external force is applied to the weed weeds, it is often necessary to repair or replace only the weed weeds, and conversely, it is less likely to repair or replace the linkage mechanism or the electric actuator. Therefore, repair costs and replacement costs can be saved.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the combine weeding device of the first feature of the present invention.
A pair of front and rear arm portions each having an operating body outer portion extending from the swing axis toward the outer side of the body and an inner portion extending from the swing axis toward the inner side of the body; A U-shaped connecting portion that connects the extending end portions of the inner side portions of the pair of arm portions, and only on the outer portion of the body portion of one of the pair of front and rear arm portions. Connect the swinging pipes of the weeds.

[III]
(Constitution)
The third feature of the present invention is that the combine weeding device of the second feature of the present invention is configured as follows.
The body outer portions of the pair of front and rear arms are formed with different extension lengths from the swing axis to the outside of the body, and the length of the pair of front and rear arms extending to the outside of the body The swinging pipe of the weed bush is connected to the outer side of the body of the longer arm part.

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the combine weeding device of any one of the first to third features of the present invention.
A crank cover is fixed to a left end portion of a lateral transmission case having a cutting transmission shaft that transmits power from the cutting portion frame to the cutting portion, and a lower end portion of the bracket is fixed to a rear portion of the crank cover.

[V]
(Constitution)
A fifth feature of the present invention resides in the following configuration in the combine weeding device of any one of the first to fourth features of the present invention.
A stopper portion extending above the operation arm is formed at an upper end portion of the bracket, and the operation arm is brought into contact with an outer end portion of the stopper portion so that the weed ridge is positioned in the retracted position. The operation arm is configured to contact the inner end portion of the stopper portion so that the weed fold is positioned in the weed action posture.

  As shown in FIG. 1 to FIG. 3, this combine is connected to a front part of a traveling machine body 2 having a pair of left and right crawler traveling devices 1, and a two-trimmed cutting part 3 is connected to be movable up and down and laterally movable. The traveling unit 2 is equipped with a driving unit 4, a threshing device 5, a grain recovery tank 6, and the like.

  The mowing unit 3 is a pair of left and right pulling devices 7 that raises the planted cereal to a predetermined mowing posture, a clipper-type mowing device 8 that cuts the raised planted culm, and the mowing cereal is scraped backward. A pair of left and right auxiliary conveyor belts 9, a pair of left and right rotating packers 10 that stirs and joins the stock of the harvested cereal masher, a feed transport device 11 that transports the chopped cereal meal rearward and upward, and the like. The whole cutting part 3 is supported so that it can swing up and down.

The mowing unit 3 is provided with a mowing unit frame 12 made of a square pipe material that supports the pulling device 7, the mowing device 8, the auxiliary transport belt 9, the rotary packer 10, and the like, in a forward-downward inclined posture. The cutting portion (not shown) transmission shaft to the frame 12 is built, the longitudinal transmission shaft of the right and left through the transmission shaft engine power which is transmitted to the Ri portion frame 12 reaper (not shown) Reaper By being transmitted, the pulling device 7 and the cutting device 8 of the cutting unit 3 are driven.

  A side cover 28 is provided on the left outer side of the cutting part 3, and an uncut planted crop falls into the machine body during the cutting and is caught on each part of the cutting part 3 or stepped on by the crawler traveling device 1. For avoiding this, a weeding jar 18 is provided so that it can swing up and down. As will be described later, the branch fence 18 can be arbitrarily moved out and in by operating an operation switch 19 provided on the left side of the driving unit 4.

As shown in FIGS. 3-6, are brackets 21 on the rear portion of the crank cover 20 transmission shaft is fixed to the left end of the lateral transmission case 15 to be decorated reaper is fixed to the bracket 21, operation arms 22 is supported via a spacer 27 and a pin 23 so as to be rotatable about a swing axis P1 in the front-rear direction of the machine body that passes the swing support point P. The operation arm 22 is formed of a U-shaped bending material that includes a pair of front and rear arm portions 22A and a connecting portion 22B that connects the extended end portions of the inner body portion of the pair of front and rear arm portions 22A . . At the end of one arm portion 22A of the operation arm 22, the swing pipe 18b minute grass rod 18 is fixed. A lower end side of a linkage rod 24 described later is rotatably attached to a portion of the operation arm 22 that extends to the inner side of the arm portion 22A .

  In this way, the operating arm 22 that swings integrally with the weed rod 18 extends from the swinging fulcrum P of the weed rod 18 to the inside of the machine body, and the connecting rod 24 is linked to the extended portion of the operating arm 22. As a result, even when an external force from the longitudinal direction of the fuselage is applied to the weed rod 18, the portion where the operating arm 22 extends from the swinging fulcrum P as a result of the deformation of the weed rod 18 It is difficult for the external force acting on the weed ridge 18 to be transmitted to the side of the linkage rod 24 that is linked to. As a result, it is difficult for the external force to be transmitted not only to the linkage rod 24 but also to the operation arm 41, the drive gear 40, the output gear 36, the electric motor 33 which is an example of an electric actuator, and the like linked via the linkage rod 24. Damage to the equipment can be prevented.

  The front end portion of the main body pipe 18a of the weed ridge 18 is attached to a mounting bracket 25 fixed to the left end weeding tool 17 via a pin 26 so as to be rotatable around an axis P1 in the longitudinal direction of the machine body (FIG. 5). reference). With this configuration, when the linkage rod 24 attached to the operation arm 22 is pushed and pulled up and down, the operation arm 22 swings around the axis P1 in the longitudinal direction of the machine body and is fixed to the operation arm 22. The weeding rod 18 swings in a switching manner between a weeding posture in which it projects laterally outward and a retracted posture in which it is retracted to the cutting portion side.

  A stopper portion 21a bent rearward is formed on the upper portion of the bracket 21, and the operation arm 22 comes into contact with the stopper portion 21a to be positioned in the weeding action posture and the retracted posture. Yes.

7 and 8, the vertical transmission case 16 for interior vertical transmission shaft upwardly from landscape transmission case 15 is extended, and the U-shaped fixing bracket 30 in the longitudinal transmission case 16 is fixed The motor bracket 31 is fixed to the fixed bracket 30 with bolts 32. An electric motor 33, which is an example of an electric actuator, is fixed to the motor bracket 31 via a gear box 34. The output of the electric motor 33 is decelerated in the gear box 34 and then transmitted to an output gear 36 fixed to an output shaft 35 extending rearward from the gear box 34.

  The output gear 36 is engaged with a drive gear 40 described later, and the power output from the electric motor 33 to the output shaft 35 via the gear box 34 is further decelerated by the output gear 36 and the drive gear 40. ing.

  As shown in FIGS. 7 and 8, the friction mechanism 13 of the weeding device includes two friction plates 42, a pressing plate 43, a disc spring 44, and the like. Hereinafter, the structure and operation of the friction mechanism 13 will be described in detail.

  A support shaft 37 is fixed to the motor bracket 31 in a rearward direction, and an operation shaft 38 is attached to the support shaft 37 via two collars 39 provided at the front and rear so as to be rotatable around an axis P2 in the longitudinal direction of the machine body. It has been. A drive gear 40, two friction plates 42 and a pressing plate 43 are attached so as to be able to rotate integrally with the operation shaft 38, and freely rotatable with respect to the operation shaft 38 between the two friction plates 42. An operation arm 41 is attached to the main body. A disc spring 44 and a pressing plate 45 are provided behind the pressing plate 43, and are attached to the operating shaft 38 by a nut 46 together with the drive gear 40, the two friction plates 42, the operating arm 41 and the pressing plate 43 described above. Yes.

  With this configuration, the nut 46 is screwed into the operation shaft 38 and the disc spring 44 is pressed against the pressing plate 43 via the presser plate 45 to apply the spring reaction force of the disc spring 44. The spring reaction force causes a frictional force to act between the operation arm 41 and the two friction plates 42. When the frictional force is applied, the power transmitted from the electric motor 33 to the drive gear 40 via the output gear 36 is transmitted to the operation arm 41.

  This frictional force can be adjusted by changing the screwing allowance of the nut 46. That is, if a large number of nuts 46 are screwed into the operation shaft 38, the spring reaction force of the disc spring 44 is increased, so that the friction force acting on the friction plate 42 can be increased. On the contrary, if the nut 46 is loosened, the spring reaction force of the disc spring 44 is reduced, so that the friction force acting on the friction plate 42 can be reduced.

  As shown in FIGS. 7 and 8, the operation arm 41 is formed of a Z-shaped bent plate, and the above-described linkage rod 24 is rotatably attached to the bent tip portion. As described above, the operation arm 41 is linked to the operation arm 22 to which the weed ridge 18 is fixed by the linkage rod 24, and if the operation arm 41 swings, the operation arm 22 swings through the linkage rod 24. Thus, the posture of the weed ridge 18 can be changed. As described above, the linking mechanism 14 of the weeding device includes the operation arm 22, the linking rod 24, the operation arm 41, and the like.

  As shown in FIGS. 4 and 8, when the electric motor 33 rotates forward, the output gear 36 rotates counterclockwise as viewed from the rear of the machine body via the gear box 34, and the drive gear 40 meshed with the output gear 36. Rotates clockwise in rear view. The rotation of the drive gear 40 is transmitted to the operation arm 41 via the friction plate 42, and the operation arm 41 rotates integrally with the drive gear 40 (clockwise when viewed from the rear of the machine body), thereby lifting the operation rod 24. By rotating the operation arm 22 linked to the operation rod 24 counterclockwise when viewed from the rear of the machine body, the weeding action posture projecting laterally outward from the retracted posture in which the weed pod 18 is retracted to the cutting portion side. Swing is switched.

  On the other hand, when the electric motor 33 rotates in the reverse direction, the output gear 36 rotates clockwise through the gear box 34 when viewed from the rear of the machine body, and the drive gear 40 engaged with the output gear 36 rotates counterclockwise when viewed from the rear of the machine body. Rotate. The rotation of the drive gear 40 is transmitted to the operation arm 41 via the friction plate 42, and the operation arm 41 rotates integrally with the drive gear 40 (counterclockwise when viewed from the rear of the machine body), thereby depressing the operation rod 24. Then, the operating arm 22 linked to the operating rod 24 is rotated clockwise in the rear view of the machine body, so that the weeding posture is retracted to the cutting portion side from the weeding action posture in which the weed pod 18 is projected laterally outward. Swing is switched.

  As shown in FIG. 2, the operation of the electric motor 33 is performed by operating the operation switch 19 provided on the left side of the driving unit 4. The operation switch 19 includes an action switch 19a for swinging the weed pod 18 to a weed action posture and a storage switch 19b for swinging the weed hoe 18 to a retracted posture. When the action switch 19a is pressed, an electric motor is provided. 33 rotates positively and the weed ridge 18 swings toward the weeding action posture. On the other hand, when the storage switch 19b is pressed, the electric motor 33 rotates in the reverse direction, and the weed ridge 18 swings toward the storage posture.

[First Alternative Embodiment of the Invention]
In [BEST MODE FOR CARRYING OUT THE INVENTION foregoing, an example of using a linkage rod 2 4 As an example of the link mechanism 14, the linkage mechanism 14 is not limited to the linkage rod 24, linking wire (Not shown) may be adopted. Based on FIG. 9, the example at the time of employ | adopting the push pull wire 50 for the linkage mechanism 14 is demonstrated. In addition, the structure of other weeding apparatuses other than shown in FIG. 9 is the same as that of the weeding apparatus shown in the above-mentioned [Best Mode for Carrying Out the Invention].

  As shown in FIG. 9, the push-pull wire 50 includes an outer wire 50 a and an inner wire 50 b, and both ends of the outer wire 50 a are near the operation arm 41 and the wire bracket 51 provided near the operation arm 22. The wire bracket 51 is fixed to the wire bracket 51. Both ends of the inner wire 50b are linked to the operation arm 22 and the operation arm 41, respectively. If the operation arm 41 rotates by forward and reverse rotation of the electric motor 33, the operation arm 22 is moved through the push-pull operation of the inner wire 50b. By swinging, the posture of the weed ridge 18 can be changed between the weeding action posture and the retracted posture.

  As shown in FIG. 9, the push-pull wire 50 can be bent and wired, and therefore, it is not necessary to arrange the push-pull wire 50 in a straight line like the linkage rod 24, for example. Therefore, even if the operation arm 22 and the operation arm 41 have different positions in the front-rear direction and the left-right direction, as long as the wiring path of the push-pull wire 50 is secured, wiring can be performed relatively freely. It is. In addition, unlike the case of using a linkage wire (not shown), not only a pulling operation but also a push operation is possible. For example, as in the case of using a linkage wire (not shown), a return spring ( There is no need to provide a mechanism (not shown) that secures an operating force in the pushing direction, such as that (not shown).

Second alternative forms state of implementation of the invention]
In previous BEST MODE FOR CARRYING OUT THE INVENTION] predicate, an example of using the electric motor 33 as an example of the electric actuator is not limited to the electric motor 33, for example, (not shown) electric cylinder Etc. may be adopted.

Combine left side view Overall plan view of combine Longitudinal side view near the weeding device Longitudinal rear view near the weeding device Side view showing front support structure Top view showing support structure Vertical side view of friction mechanism attachment Vertical rear view of the electric motor mounting part GENERAL schematic of the link mechanism in the first alternative embodiment of the invention

3 mowing parts
12 Mowing part frame 14 Linkage mechanism
15 Sideways transmission case 18
18b Oscillating pipe
20 Crank cover
21 Bracket
21a Stopper 22 Operation arm
22A Arm
22B connecting portion 33 electric motor (electric actuator)
P1 swing axis

Claims (5)

Combine weeds that are configured to be swingable by switching the weed pods installed on the outside of the one side of the mowing part to the weeding action position projecting laterally outward and the retracted position retracted to the mowing part side A device,
Equipped with an electric actuator that can operate forward and reverse,
The operation arm that swings integrally with the weed pod is rotated around the swing axis about the front and rear of the fuselage on the upper part of the bracket that is fixed in the cantilever direction with the lower end fixed to the cutting part. Support freely,
The portion of the operating arm that extends obliquely downward and outward from the body in the weeding posture of the weed ridge extends from the swing axis of the operation arm to the outside of the body from the outer end of the bracket. The end of the swing pipe of the weed shears is connected, and the inside of the body from the swing axis of the operation arm that is inclined obliquely upward in the body direction by the weeding posture of the weed shears A combine weeding device in which a portion extending to the electric actuator and the electric actuator are linked by a linkage mechanism. A pair of front and rear arm portions each having an operating body outer portion extending from the swing axis toward the outer side of the body and an inner portion extending from the swing axis toward the inner side of the body; A U-shaped connecting portion that connects the extending end portions of the inner side portions of the pair of arm portions, and only on the outer portion of the body portion of one of the pair of front and rear arm portions. The combine weeding apparatus according to claim 1, wherein a swinging pipe of a weed pod is connected . The body outer portions of the pair of front and rear arms are formed with different extension lengths from the swing axis to the outside of the body, and the length of the pair of front and rear arms extending to the outside of the body 3. The combine weeding apparatus according to claim 2, wherein a swing pipe of the weed hoe is connected to an outer part of the body of the longer arm part. 2. A crank cover is fixed to a left end portion of a lateral transmission case having a cutting transmission shaft that transmits power from a cutting portion frame to the cutting portion, and a lower end portion of the bracket is fixed to a rear portion of the crank cover. The combine weeding apparatus as described in any one of -3. A stopper portion extending above the operation arm is formed at an upper end portion of the bracket, and the operation arm is brought into contact with an outer end portion of the stopper portion so that the weed ridge is positioned in the retracted position. The said arm is contacted with the inner end part of the said stopper part, and the said weed ridge is positioned in a weeding action attitude | position, It is comprised as described in any one of Claims 1-4. Combine weeding equipment.

Images