JP3564448B2 - Coulter buffer mechanism of root crop harvester and coulter assembly provided with this buffer mechanism - Google Patents

Description

[0101]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coulter buffer mechanism of a root vegetable harvester such as a beet harvester and a coulter assembly having the buffer mechanism.
[0092]
[Prior art]
As shown in FIG. 1, a root cropper 1 such as a beet harvester digs up root crops with a shovel member 8 provided below a chassis 3 while traveling in the direction of arrow A, delivers the root crops to a rod conveyor 6, and transfers the root crops to a hopper 4 on the chassis. To be transported to
This type of harvester cuts residues such as foliage scattered on the ground surface near the beet during traveling to prevent the residue from adhering to the conveyor frame 7 at the back, and cuts the soil on the left and right soils of the root vegetables to dig. In order to facilitate the excavation, a disc-shaped excavator 9 is provided on both sides near the tip of the excavator 8 in parallel with the traveling direction.
[0093]
By the way, since obstacles such as rubble are mixed in the field, the coulter collides with obstacles in the ground while the harvester is moving forward and receives a strong impact force, so that deformation and destruction accidents occur frequently.
In order to prevent this, a means is generally employed in which the coulter that has collided with the obstacle resiliently moves upward to cushion the impact.
On the other hand, it is desirable that this type of root crop harvester keeps the coulter upward when running without digging and raising work, but the conventional coulter has no means to rotate upward and stand by during non-work. Was. In addition, it is extremely difficult to rotate the device upward because a strong force equivalent to an impact is required.
[0093]
The present invention is further improved to solve the above-described problem, and a first object is to provide a coulter buffer mechanism that can rotate and hold a coulter having a buffer mechanism to an upper retreat position with a small force. Is to do.
[0056]
A second object of the present invention is to provide a coulter assembly having the above-mentioned cushioning mechanism.
[0086]
[Means for Solving the Problems]
In order to achieve the first object described above, the coulter buffering mechanism of the present invention is installed near the excavator tip of a digging and digging rooter harvester, and cuts a residue in a field as the harvester runs. In the cushioning mechanism, the distal end side of the link is pivotally attached to the central axis of the coulter, and the distal end of a support bracket integrated with the body frame of the harvester is axially attached to the middle of the link behind the central axis of the coulter. The base end side of the adjustment member superimposed on the link behind the attachment portion is pivotally attached to the link so as to be swingable, the link and the distal end side of the adjustment member are detachably engaged, and the distal end side of the adjustment member is hung. It is connected to the lowering bracket via a spring, and further provided with locking means for releasing the distal end side engagement of the link and the adjusting member and holding the coulter rotated upward in the upward rotation position. And
007
The link and the distal end side of the adjusting member are preferably detachably engaged by a pin hole and a pin, and the locking means of the coulter is preferably engaged with the link to move the coulter to the upper pivot position. A support bracket side pin hole formed at a holding position,
It consists of a pin that is removably inserted into this pin hole.
[0098]
In order to achieve the second object, the coulter of the present invention is installed near the excavator tip of the excavator of the root crop harvester, and a dug coulter main body that cuts the residue of the field as the harvester runs, A link having a tip pivotally attached to the center axis of the coulter body so as to be swingable, a support bracket having a tip attached to an intermediate portion of the link, and an upper portion coupled to a body frame of the harvester; An adjusting member that is superimposed on the rear portion of the shaft mounting portion, the base end side is swingably mounted on the link, and the distal end side is detachably attached to the distal end side of the link by a pin hole and a pin; A spring that integrally connects the hanging bracket and the distal end of the adjusting member and a spring that releases the distal end of the link and the adjusting member and holds the coulter that has been rotated upward in the upward rotating position. Locking means Wherein the locking means comprises a support bracket side pin hole which engages with the link to hold the coulter at the upward rotation position, and a locking pin which is removably inserted into the pin hole. And
[0099]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view showing an entire configuration of a root vegetable harvesting machine 1 such as a beet harvester. In this root vegetable harvesting machine 1, a hopper 4 is placed on a chassis 3 having wheels 2 and a towing arm 5 at the front of the vehicle body is connected to a three-point link (not shown) of a towing vehicle such as a tractor, and an arrow is drawn by the towing vehicle. It is configured to be pulled in the a direction.
[0102]
Below the chassis 3, a conveyor frame 7 around which an endless rod conveyor 6 is rotatably suspended is provided with an upward slope toward the rear, and a shovel member 8 for excavating a beat is provided at the tip of the conveyor frame 7. It is fixed in a downwardly inclined shape with its tip facing the ground in the traveling direction.
[0111]
Thus, the root vegetable harvesting machine 1 travels in the direction of the arrow a while excavating the root vegetables with the shovel member 8 and sends the excavated root vegetables to the hopper 4 of the chassis 3 by the rod conveyor 6. The long residue is dug up and gets caught in the rear conveyor member during running, causing trouble. For this purpose, a coulter 9 for cutting the residue is provided in front of the shovel member 8.
[0122]
The coulter 9 is formed of a disk-shaped rotary blade having a cutting edge on a peripheral edge, and the rotary blade is directed parallel to the traveling direction and perpendicular to the ground to a downward supporting bracket 10 integral with the chassis 3. It is configured to cut the residue by rotating in the direction of the arrow b during traveling and penetrating into the ground.
In addition to the function of cutting the residue, the coulter 9 cuts the soil on the left and right sides of the root vegetable to facilitate excavation and closes the excavator member 8 so that the excavated root vegetable does not roll out to the side. It is arranged on both sides.
[0113]
Since there are cases where obstacles such as rocks are mixed in the field, the above-mentioned coulter 9 needs a means for buffering the obstacle when it collides with the obstacle. , It is necessary for the shock-absorbing means to escape upward while maintaining the front and rear positions of the coulter 9 in the event of a collision.
[0141]
For this reason, as shown in FIG. 2, the coulter mounting structure of the present invention is configured such that the distal end side of the link 12 is pivotally mounted on the center shaft 11 of the excavating coulter 9 and the downward supporting bracket 10 fixed to the chassis 3 side. The distal end is axially attached to the middle of the link 12 at a position behind the central axis 11 of the coulter 9.
Further, the adjusting member 14 is superimposed on the rear side of the intermediate shaft attaching portion 13 of the link 12, and the base end side of the adjusting member 14 is swingably attached to the link 12 by the support shaft 15, and the link 12 and the adjusting member 14 The front ends (rear ends) are detachably engaged with each other, and the front ends of the adjustment members 14 are connected to suspension brackets 16 via springs 17.
[0152]
Further, as shown in FIG. 4, the support bracket 10 is provided with a locking means for releasing the distal end side engagement of the link 12 and the adjusting member 14 and holding the coulter 9 rotated upward in the retracted position above. Is provided.
[0162]
In the illustrated embodiment, the link 12 and the adjustment member 14 are engaged at the distal end side with the pin 19 removably engaged with the through-pin holes 18a and 18b formed at the distal end side of the link 12 and the adjustment member 14, respectively. When the pin 19 is inserted into the pins 18a and 18b, the link 12 and the distal end side of the adjustment member 14 are engaged, and when the pin 19 is pulled out from the through pin holes 18a and 18b,
The engagement of the adjusting member 14 at the distal end is released, and the adjusting member 14 is supported by the support shaft 15 at the proximal end.
[0173]
The locking means for holding the coulter 9 at the upper retreat position includes a pin hole 20 on the support bracket 10 side formed at a position capable of engaging with the link 12 and holding the coulter 9 at the upper rotation position. A pin 21 is detachably inserted into the pin hole 20. As the pin 21, a pin 19 pulled out from the link 12 and the through hole 18a, 18b on the distal end side of the adjusting member 14 can be used.
[0182]
Thus, as shown in FIG. 2, when the pin 19 is inserted by aligning the link 12 and the through-holes 18 a and 18 b on the distal end side of the adjusting member 14, the link 12 and the distal end side of the adjusting member 14 are engaged, and the coulter 9 is adjusted. It is supported at a normal position (cutting position) via a spring 17 suspended between the member 14 and the suspension bracket 16. Since the spring 17 supports the link 12 with a spring force that does not extend due to the normal cutting resistance of the coulter 9, when the harvester 1 moves forward (arrow) in this state, the coulter 9 cuts into the soil while rotating, Proceed while cutting.
[0119]
When the coulter 9 is in the normal position (cutting position), the link 12 is preferably supported by the spring 17 at an inclination angle slightly upward to the right with respect to the horizontal line, as shown in FIG.
[0202]
As described above, since the coulter 9 is rotatably supported by the downward supporting bracket 10 on the chassis 3 behind the center shaft 11 via the link 12, as shown in FIG. When a strong impact is caused by colliding with the obstacle 24, the link 12 and the intermediate shaft attachment portion 13 of the downward support bracket 10 pivot upward against the spring 17 to absorb the impact. In this case, the coulter 9 rotates in the direction of the arrow c with the radius between the intermediate shaft attaching portion 15 of the link 12 and the coulter center axis 11 as a radius, but the link 12 is normally disposed rearward and inclined upward to the right. When the shock is received, the coulter 9 moves upward with almost no change in the front-rear position.
[0219]
When the coulter 9 is rotated upward from the state shown in FIG. 2 and held in the retracted position after the excavation work is completed, the pin 19 is pulled out as shown in FIG. Is released, and the coulter 9 is rotated upward (arrow c) with the intermediate shaft attachment portion 13 as a fulcrum. After rotating the coulter 9 until the link 12 is below the pin hole 20 of the support bracket 10, when the pin 21 (the extracted pin 19) is inserted into the pin hole 20 of the support bracket 10, the link 12 becomes And the coulter 9 is held at the upper retracted position.
[0222]
In the illustrated embodiment, the arm 22 is integrally formed upward from the downward support bracket 10 and the upper end of the spring 17 is locked to the tip of the arm 22. The upper end of the spring 17 is connected to another end of the chassis 3 side. It may be locked to a member.
[0230]
The spring 17 may have a single resilient force, or may have two springs to secure a predetermined spring force as shown in FIGS.
[0242]
The downward supporting frame 10 may be a member integrated with the chassis 3 or a separate member fixed to a member on the chassis 3 side. Further, the components of the coulter 9 and the cushioning mechanism may be assembled as shown in FIG. 2 by sequentially assembling the individual components. However, as shown in FIGS. 5 and 6, the coulter 9, the frame 12, and the support bracket 10 are preferably used. The adjusting member 14, the arm 22, the suspension bracket 16, the spring 17, and the mounting column 23 may be formed in a colter assembly previously connected in a predetermined positional relationship, and set on the body frame of the working machine via the column 23.
[0252]
【effect】
According to the present invention, the damper of the coulter is configured as described above, so that when the coulter collides with an obstacle, the coulter can be moved upward while maintaining the front-rear position of the coulter to absorb the impact, and the excavation can be performed. When the picking operation is not performed, the coulter can be pivoted upward with a light force by a simple operation and held in the retracted position.
[0262]
Since the pin extracted from the engaging portion on the distal end side of the frame and the adjusting member can be used as the retracting position locking pin of the coulter, the number of components is reduced, and there is no possibility that the extracted pin is lost.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing a side view of a root vegetable harvester. FIG. 2 is an enlarged configuration diagram of a coulter buffer mechanism according to the present invention at a normal state. FIG. FIG. 5 is a perspective view of the coulter assembly. FIG. 6 is an exploded view of the coulter assembly.
DESCRIPTION OF SYMBOLS 1 ... Root vegetable harvesting machine 2 ... Wheel 3 ... Carriage 4 ... Hopper 5 ... Traction arm 6 ... Rod conveyor 7 ... Conveyor frame 8 ... Excavator member 9 ... Colter 10 ... Support bracket 11 ... Colter center shaft 12 ... Link 13 ... Intermediate shaft attachment Part 14 Adjusting member 15 Support shaft 16 Suspension bracket 17 Spring 18a, 18b Through pin hole 19 Pin 20 Pin hole 21 Pin 22 Arm 23 Support post 24 Obstacles [Reference number] PAS001 -029

Claims (3)

In the buffering mechanism of the excavator, which is installed near the excavator tip of the excavator of the root vegetable harvester and cuts the residue of the field as the harvester travels, the tip side of the link is pivoted to the central axis of the coulter, The support bracket integrated with the vehicle body frame of the above is axially attached to the middle of the link behind the center axis of the coulter, and the base end side of the adjusting member superimposed on the link behind the axial attachment portion is swung to the link. The link and the distal end of the adjusting member are detachably engaged with each other, and the distal end of the adjusting member is connected to the suspension bracket via a spring. A coulter buffering mechanism for a root vegetable harvester, comprising a locking means for releasing the engagement and holding the coulter turned upward in a turning position. The link and the distal end side of the adjusting member are detachably engaged with each other by a pin hole and a pin, and the locking means of the coulter is formed at a position for engaging with the link and holding the coulter at the upward rotation position. 2. The damper mechanism according to claim 1, comprising a pin hole on the support bracket side and a pin removably inserted into the pin hole. A digging coulter body that is installed near the tip of the excavator excavator of the root crop harvester and cuts the residue of the field as the harvester travels, and a link that pivotally swings the tip side to the center axis of the coulter, The distal end portion is pivotally attached to the intermediate portion of the link, and the upper portion is overlapped with a support bracket whose upper portion is coupled to the body frame of the harvester, behind the pivotal attachment portion of the link, and the base end side is swingable on the link. An adjusting member that is axially attached and has a distal end side detachably attached to the distal end side of the link by a pin hole and a pin, a spring that extends upward integrally with the support bracket, and a spring that connects the distal end side of the adjusting member. Locking means for releasing the distal end side engagement between the link and the adjusting member and holding the coulter rotated upward in the upper rotation position, wherein the locking means engages with the link to form the coulter. Rotate upward A support bracket side pin holes to hold the location, the shock absorber with Coulter assembly characterized by comprising the locking pin to be freely inserted removably into the pin hole

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