JP2000000002A - Stalk processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stalk processing apparatus capable of easily and adequately shifting between a broad gripping transferring path for gripping and transferring stalks of a large diameter and a narrow gripping transferring path for gripping and transferring stalks of a small diameter, and capable of performing nice gripping and transferring action suited for each diameter under prevention of the troubles such as slipping off and damaging by pressure of the stalks during transferring. SOLUTION: This stalk processing apparatus A transfers standing stalks such as tobacco to a stalk processing part under gripping them between a pair of feed chains 50 to process them. The feed chains are constructed in such a manner that, in a state where they are each spread between a driving wheel 52 and an idler wheel 51, the insides of stalk-transferring sides of the feed chains are guided in slide contact with chain guides and at the same time, the chain guides 70 are constructed so that the stalk-gripping width of a gripping transferring path 5S of the feed chains 50 can be controlled by means of a gripping width-controlling mechanism 7. Further, the chain guides 10 are allowed to move without changing the gripping pressure on stalks and control the stalk- gripping width of the gripping transferring path 5S of the feed chains 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stem processing apparatus for processing stems such as tobacco and stems by nipping and transporting the stems by a feed chain to a stem processing section.

[0002]

2. Description of the Related Art Conventionally, remnants (stem trunks) of tobacco and the like remaining on ridges are excavated, the excavated remnants are conveyed backward by a feeder, and the remnants are cut by a stem processing unit. The stalk processing device is a digging blade laterally provided at the front of the support frame, a digging portion including a digging rotary that is driven to rotate above the digging blade, and a digging blade formed above the digging portion. A feeder that pinches and transports the excavated residual trunk with a feed chain,
There is known a configuration in which the remaining stem conveyed by the feeder is subjected to processing such as cutting in a stem processing section. And
The feeder is configured such that the stem transport sides of the left and right feed chains are opposed to each other to form a sandwiching transport path therebetween, and the sandwiching transport path is generally suitable for sandwiching and transporting a remaining trunk having a standard trunk diameter. It is formed so as to have a holding width, and the remaining stem is held and transported toward the stem processing section.

[0003]

However, in the remaining trunk processing apparatus having the above-mentioned conventional configuration, a chain guide for guiding the inside of the feed chain on the stem transport side in a sliding manner is fixed, and the nipping transport path is provided. Since the stem width is set constant according to the standard stem diameter of the remaining stem, it is not possible to properly sandwich and transport the remaining stem with a small stem diameter, especially in specific areas. In the case of a small diameter remaining trunk grown in the above, there are problems such as dropping out during the transfer and disturbing the transfer posture. In addition, when the root of the remaining trunk is subjected to the soil removal action by the excavation rotary during the nipping and transporting, the weakly nipped remnant is pulled downward in contact with the excavating rotary, or the nipping and transporting disorder and stem treatment. There is a problem that clogging occurs in a part or the like.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a stem stem processing apparatus of the present invention firstly transports an established stem stem such as tobacco to a stem stem processing section by a feed chain. In the stem processing apparatus, the feed chain is stretched between a driving wheel and an idler wheel, and the inside of the stem conveying side is guided by a chain guide for sliding contact. Is configured to be able to adjust the stem width of the stem in the nipping / conveying path of the feed chain via the nipping width adjusting mechanism.

[0005] Secondly, the present invention is characterized in that the chain guide is moved without changing the stem pinching pressure to adjust the stem pinching width of the feed chain in the pinching and conveying path.

[0008] Thirdly, adjustment of the stem width of the stem of the feed chain in the nipping and conveying path is performed at a portion opposed to the excavated portion located below the feed chain.

[0007]

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, A denotes a stem processing machine (stem stem processing apparatus) for excavating and cutting a remaining stem of tobacco or the like.
Plane frame frame (machine base) supported by 1a
A control panel 1c including a steering lever 1L and the like and a control section 1c including a seat are provided at the right front portion of the control section 1b, and an engine is mounted below the seat of the control section 1c. A transmission mechanism 1D is provided to transmit the power of the engine to the crawlers 1a, 1a and the respective working units.

[0008] A pre-processing unit 2 is provided at the front left side of the traveling body 1.
Is mounted so as to be adjustable up and down by a support shaft 13 for an upper fulcrum provided on the body side and a lower elevating cylinder 15.
A stem processing unit (stem stem processing unit) 3 including a guiding unit 3a and a cutter unit 3b is installed behind the steering unit 1c on the right side of the remaining stem processing unit 3 and behind the control unit 1c. A hopper (accommodating portion) 4 for accommodating the remaining stem after cutting (hereinafter referred to as a cut piece) is arranged and configured.

The detailed configuration of the pre-processing unit 2 will be described with reference to FIGS. The pre-processing unit 2 is a pre-processing unit frame 2M that includes a support frame 2F that supports the excavation rotary 6b of the excavation unit 6, a support frame 6F that supports the excavation blade 60, and a connecting rod (horizontal frame). Is supported by an upper rotating support shaft 13 provided at the center of the front end of the body frame 1b, and the lower left and right sides are supported by an elevating cylinder 15;
5, the pre-processing unit 2 is mounted so as to be adjustable up and down. The pre-processing unit frame 2M has a support rod 21 having a front wheel (guide wheel) 20 that rolls on the ground at the time of work and extends left and right toward the front. The front wheel 20 is mounted on the support rod 21 so as to be movable in the front-rear direction with respect to the support rod 21 and to be vertically adjustable via the front wheel vertical support shaft 20a.

A feeder 5 is installed from the rear of the center of the left and right front wheels 20 and 20 to the upper part of the front of the guiding portion 3a. The feeder 5 is located above the digging portion 6. By making the left and right feed chains (transport bands) 50, 50 covered by the cover frame 5a face each other, a transport path 5K for sandwiching and transporting the remaining stem is formed with a configuration described later. Further, the front side of the feeder 5 is
1 is supported by a connecting rod 21a in the middle of the transmission mechanism 1D.
The transmission shaft 21c is slopingly inclined forward as a whole by supporting the rear side of the transmission shaft 21c so as to be swingable in the front-rear direction to the rotation shaft 21b protruding laterally from the rear. .

As a result, the pre-processing unit 2 is moved up and down
5, the feeder 5 moves up and down around the support shaft 13.
Is also moved up and down about the rotation shaft 21b via the connecting rod 21a. In addition, a remnant tilting device 55 having a roller 55a intersecting with the transport path 5K is provided horizontally above the terminal end of the feeder 5, and is in contact with the stem of the residual trunk which is nipped and conveyed at the terminal end of the feeder 5. The remaining trunk is sent to the remaining trunk processing unit 3 with an appropriate posture. In addition, a digging device (digging blade) 6a for digging the remaining trunk is provided below the front part of the feeder 5.
The excavation section 6 comprising a ridge-removing device (excavation rotary) 6b for excavating the soil excavated above and excavating the soil adhering to the root of the remaining trunk, and the like,
It is integrally formed with the preprocessing unit frame 2M. The preprocessing unit frame 2M is rotatably supported by the upper rotation support shaft 13 and is provided on the lower front side of the left and right support frames 2F formed in a vertical plate shape.
Is rotatably supported via a metal part.

The left and right support frames 2F are provided with a rotary shaft 6
A pipe-shaped connecting rod 69 is provided at an intermediate portion between the rotary shaft 2 and the upper rotation support shaft 13 to connect the rotary shaft 62 at the same height position as the rotary shaft 62 on the back side of the excavated rotary 6b with a rigid structure. Is provided close to the claw rotation locus of the excavation rotary 6b to prevent the deposition and attachment of earth scattered on the connecting rod 69. The support frame 6F extends forward along the lower part of the excavation rotary 6b, and supports the both ends of the excavation blade 60, which is a flat plate-like shape in plan view, at its tip.

Next, the feeder 5 of the pre-processing unit 2 will be described with reference to FIGS. The feeder 5 is provided with an idle wheel 51 and a drive wheel 5 before and after a left and right transport frame 5F which is obliquely inclined in a front low and rear high manner by a connecting rod 21a and a transmission shaft 21c.
2, a feed chain 50 having a configuration described later is stretched between the idler wheel 51 and the drive wheel 52 so as to be rotatable in an inward direction, and the stem conveying sides of the pair of left and right feed chains 50, 50 are opposed to each other. To form the transport path 5K,
The starting end is positioned so as to be slightly higher than the height of the ridge U at a substantially intermediate portion between the front wheel 20 and the excavating blade 60, and the end is located above the starting end of the conveying belt 3V of the remaining rod processing unit 3 described later. Are installed with an interval for dropping and transferring the remaining trunk.

The transport path 5K formed by the feed chains 50, 50 has its starting end located in front of substantially the same position as the center of the excavating blade 60 in plan view.
The trailing end is deviated to the left side of the conveyor belt 3V to form a straight inclined path, and a portion of the inclined path extending from the starting end to a position substantially above the digging blade 60 is settled. 4H is a widening path 5H that exerts a carding and feeding action while being squeezed from both sides, and a clamping and conveying path 5S that clamps and conveys the remaining trunk in a clamping manner shown in FIG. It is formed with a clamping width (stem trunk clamping width) adapted to the size and a clamping width adjusting mechanism 7 for clamping and transporting with an appropriate stem trunk clamping pressure, and gradually releases the clamping and transport of the remaining stem at the end of the clamping and transporting path 5S. A discharge path 5E for guiding and discharging (throwing away) to the transport belt 3V is formed.

That is, as shown in FIGS. 4 and 5, the widening path 5H extends from the upper right end of the excavating blade 60, which is the nipping start point (nipping start position) 5P of the nipping transport path 5S, to the left and right. The feed trajectory of the feed chains 50, 50 is formed so as to be forwardly expanded so as to include the planting width of the remaining stem, so that the remaining stem planted at a predetermined planting width on the ridge U is scraped. These remaining stems can be introduced into the transport path 5K without causing any drawbacks or scraping leaks of the remaining trunks that are lying down, and the introduced trunks can be combed up and down by tilting forward and backward. Digging part 6 while correcting it to an upright posture
Digging work can also be performed satisfactorily, and the remaining trunk excavated while preventing turbulence or clogging of the conveyance is transferred to the conveyance belt 3V in the nip conveyance performed in the next nip conveyance path 5S. Good transport is possible.

As shown in the figure, the nipping conveyance path 5S has a predetermined nipping width set by the nipping width adjustment mechanism 7 after the nipping start point 5P of the transport claws 55 of the left and right feed chains 50, 50. By holding and bringing them close to each other so that they can be pinched and conveyed, the remaining trunk introduced through the expanding path 5H is properly pinched, and the remaining trunk may fall out during the digging work by the digging part 6 performed under the lower part. In order to prevent trouble, the remaining excavated trunk can be smoothly fed to the conveyor belt 3V. That is, the nipping transport path 5S is configured to hold the stem of the remaining trunk from the nipping start point 5P above the excavating blade 60 during excavation work, and that the nipping start point 5P is As in the case of being located at the rear, it is possible to accurately send the remaining trunk to the upper remaining trunk processing unit 3 in an orderly posture, while preventing the posture from greatly degrading to the front.

Next, with reference to FIGS. 4 and 5, the configuration of the feed chain 50 and the clamping width adjusting mechanism 7 will be described. As shown in FIG. 4, the feed chain 50 has a link piece composed of a transport claw 55 having a bifurcated mountain-shaped projection 55 a and a connecting link 56 having a regulating piece 56 a for preventing chain runout protruding inward. An endless belt is formed by arranging the two on the upper and lower sides and alternately connecting them by a chain pin. Then, as shown in FIG.
Reference numeral 0 indicates that the inside of the conveyance side is elastically slidably guided by a clamping width adjustment mechanism 7 described later, and the right feed chain 50
The guide rail 7a guides the inner side of the transfer side in sliding contact, and the inner side of the non-transfer side of both sides slides and guides by an appropriate number of chain tension guides 7b, so that the chain tension support can be performed well. I have to. The guide rail 7a and the chain tension guide 7b are attached and fixed to the transport frame 5F with adjusting screws 7d through elongated elongated adjusting holes 7c formed integrally with the guide rails 7a and the chain tension guides 7b. Or the tension of the chain can be adjusted.

Then, the left and right feed chains 50, 50
As shown in FIG. 4 (C), the transfer claws 55 facing each other on the transfer side are formed on the side of the connecting link 56 where the protrusion 55a of the bifurcated mountain portion is misaligned and one protrusion 55a is opposed. By connecting to the valley, a large diameter trunk is connected to the link 5
6 and the other protrusion 55a, and the small diameter remaining stem can be accurately held between the opposing and inconsistent protrusions 55a. Further, the left and right feed chains 50, 50 face each other with a vertical step between the upper and lower transport claws 55 of one feed chain 50 so that one of the transport claws 55 of the other feed chain 50 intervenes. By doing so, it is possible to increase the vertical allowance of the remaining stem in the vertical direction, stably support the remaining stem, prevent the contact of the opposing transport claws 55, and make the clamping width as close as possible. It is composed.

Next, the holding width adjusting mechanism (chain adjusting guide) 7 will be described. The clamping width adjusting mechanism 7 in this embodiment is installed on the left side of the feed chain 50, and is a wide clamping conveyance path 5S for clamping and conveying the standard trunk diameter remaining trunk and the large trunk diameter residual trunk. And a small-sized pinch-and-convey path 5S for pinching and conveying the remaining stem having a small stem diameter so as to be switchable via the pinching-width adjusting mechanism 7 without changing the stem pinching pressure. It is configured such that a dropping in the middle of the transfer or a breakage of the middle portion of the remaining stem due to the crushing of the remaining trunk having a largely different diameter can be properly prevented, and a good nipping transport can be performed.

That is, as shown in FIG.
A guide piece (chain guide) 70 for slidingly guiding the inside of the transport side between the upper and lower transport claws 55 of the left feed chain 50 and the connection link 56, and a guide piece 7
The guide rod 72 is pivotally supported through a connecting pin, and is slidably inserted and supported in a support portion (guide hole) 71 a provided in the guide frame 71.
(Elastic machine) 73 interposed between the guide piece 71 and the guide frame 71 to elastically urge the guide piece 70 at a predetermined pressure.
And a plurality of guide pieces 70 supported by a horizontal frame-shaped guide frame 71 together with a connecting piece 76 via a connecting pin 75. The chain adjustment guide is constituted by connecting a plurality of the chain adjustment guides in series.

The switching means 8 includes a switching pin 82 removably inserted into a pin hole 80 formed in the end of the guide rod 72, and an adjustment interval between the small-width transport path and the wide-width transport path. A length L) and a cylindrical switching member 8a which is removably inserted into the guide rod 72 and is connected to the upper portion of the support portion 71a (on the transport side) as shown in FIG. ), And the spring 73 inserted into the guide rod 72 is supported via the support portion 71a, the guide piece 70 guides the left feed chain 50 at the illustrated position, and the right feed chain A small-width pinching / conveying path 5 </ b> S can be formed therebetween.

On the other hand, as shown in FIG.
When the spring 73 is directly supported by the support portion 71a while the left feed chain 50 is positioned below the support portion 71a (non-conveying side), the left feed chain 50 is positioned below the support chain 71a by an adjustment interval L. Thus, a wide clamping conveyance path 5S corresponding to the adjustment interval L can be formed between the feed chain 50 and the right feed chain 50. At this time, the biasing force (clamping pressure) of the spring 73 does not change, and the stem-clamping width of the clamp-and-convey path 5S can be adjusted to be expanded and narrowed by the adjustment interval L, so that the remaining stem can be satisfactorily applied with an appropriate clamping pressure. It is possible to carry out nipping conveyance.

Next, the configuration of the excavated portion 6 and its operation will be described. As shown in FIGS. 2 and 3, the excavating device 6a of the excavating part 6 forms the excavating blade 60 with a dug-up width slightly larger than the ridge width, and is formed in a plate-like shape having a U-shape in plan view. Are detachably attached to the front ends of the support frames 6F, 6F extending downward from the rear of the left and right support frames 2F, 2F of the excavated portion 6. Further, the excavating blade 60 is provided such that its front end position is substantially the same as or slightly forward of the claw rotation locus of the excavating rotary 6b in a side view, thereby setting the excavation timing of the remaining stem. It is designed to perform well and perform smooth excavation work.

The excavation rotary 6b is mounted on the cylindrical rotary shaft 62, which is laterally supported between the support frames 2F and 2F and rotationally transmitted in the upward direction, to the two support frames 6F.
A plurality of claws (digging nails) that excavate the ridge and remove the remaining trunk in the outer circumference within the excavated width formed by
63 are provided with different phases. With this structure, the ridges U are displaced sideways while being dug up by the claws 63 and flattened to a low level, and at the same time, the adhered soil and weeds that adhere to the support frame 6 </ b> F that enters the rotation locus of the claws 63 and are properly scraped. It is designed to be able to be dropped, and the excavation work of the remaining trunk with little excavation resistance is performed well.

Next, the remaining trunk processing section 3 and the hopper 4 will be described with reference to FIG. The trunk processing section 3 integrally connects the guide section 3a and the cutter section 3b of the trunk, and the guide section 3a stretches the transport belt 3V in the front-rear direction and expands both sides thereof upward. The end of the conveyor belt 3V in the conveyance direction is surrounded by the cutter unit 3b.
It is located inside the entrance. The cutter portion 3 b rotatably supports a cutter blade in a cutter drum 31, and a cut piece discharge cylinder 32 is provided on one side of the cutter drum 31.
And its discharge port is directed toward the inside of the opening 4 a of the hopper 4.

The hopper 4 is formed by a front wall, a rear wall, a left wall, a right wall, and a bottom wall into a rectangular box-shaped container having an opening 4a at the upper side, and protrudes upward and outward from the front wall and the rear wall. The installed support shaft 40 is rotatably pivotally supported on the upper end of a support (not shown) that is erected near the front and rear sides of the body frame 1b, and the tank 4 is rocked by the hydraulic cylinder 41 inside the support. It is constituted by movably supporting. In this state, the hopper 4 is mounted and supported by the support shaft 40 and the hydraulic cylinder 41, from the storage operation posture in which the hydraulic cylinder 41 is stopped at the minimum contraction position, to the hydraulic cylinder 4
When the first member 1 is operated to the most extended position, it is switched to a discharge posture in which the support shaft 40 is pivoted upward and outward toward the outside of the machine body, and the cut pieces accommodated in the tank 4 can be easily discharged. Like that.

Next, the remaining trunk processing operation by the residual trunk processing machine A having the above structure will be described. By operating the pre-processing unit 2 and reducing the elevating cylinder 15, FIG.
As shown by, the pre-processing unit 2 is lowered to make the digging blade 60 of the digging part 6 approximately the same height as the bottom of the ridge U. Then, the traveling body 1 is sandwiched between the ridge U for performing the remaining stem processing by the left and right front wheels 20.
When the ridge U is advanced along the ridge U, the ridge U is digged in the transverse direction by the digging blade 60 by the advancing operation, and the dug portion is formed by the claw 6 of the digging rotary 6b.
It is dug down by the upward rotation of the third group.

The stem on the ridge U is stalked by the expanding path 5H of the transport path 5K of the feeder 5 and is nipped by the nipping transport path 5S in this state. The bottom of is dug down. That is, the remaining trunk is dug up from the root together with the ridge U while being gripped.
Then, when the remaining trunk is pinched and conveyed rearward and upward in a standing position as the aircraft further advances, the root portion is excavated while being excavated by the excavation rotary 6b, and the landslide is removed. Done.

Next, the remaining stem removed from the soil is feder 5
Is conveyed to the rear in the discharge path 5E, the upper part of the stem comes into contact with the roller 55a of the tilting device 55 and the root part is advanced, and is placed on the conveying belt 3V of the guide part 3a. When the state is reached, the nipping conveyance is released and the paper is smoothly transferred without clogging or the like, and is guided toward the entrance of the cutter unit 3b by the conveyance belt 3V. And the remaining stem supplied to the cutter unit 3b is:
The cutter blades are successively and finely cut from the root to the stem by rotation of the cutter blade. The cut pieces are repelled and accurately discharged and stored in the hopper 4 from the upper discharge port of the discharge tube 32. When the cut pieces are full in the hopper 4, the machine is stopped, the hopper 4 is rotated through the hydraulic cylinder 41 as described above to discharge the cut pieces, and the hopper 4 is returned to the original state. It is possible to perform the remaining stem processing work continuously and efficiently again after returning.

In the above-mentioned remaining stem processing operation, when the feeder 5 excavates the remaining stem by the excavation section 6 while pinching and transporting the remaining stem in a manner to be described later, first, the left and right support frames 2F The digging blade 60 is provided so that its tip position is substantially the same as or slightly frontward with respect to the front side of the claw rotation locus of the digging rotary 6b. The digging rotary 6b, which rotates upward at the rear and upper side of the digging rotary 6b, raises the transversely cut ridge U from the bottom of the remaining trunk from below while digging while digging while traversing the digging width as the biting machine advances. U
Dig up and break.

When such excavation work is performed, the front part of the feeder 5 expands from the start end to a position substantially above the excavation blade 60, and the feeder 5 sequentially moves toward the rear clamping start point 5P. Since the convergent expansion path 5H is formed, the expansion path 5H
Squeezes the remaining stem planted on the ridge U with a predetermined planting width from both sides without leakage, and also introduces the remaining stem which is laid down without causing leakage, and reaches the clamping start point 5P. While correcting the posture to an erect posture that was extended by combing in the meantime,
At the nipping start point 5P, the remaining trunk is prevented from being disturbed or jammed, and is smoothly nipped and transported to the nipping transport path 5S.

Also, the nipping start point 5P of the nipping transport path 5S
Is provided above the excavation blade 60, so that the remaining trunk is dug up by the excavation rotary 6b while being properly pinched, and the root is freed. After that, the remaining trunk is smoothly held and conveyed to the rear as it is, so that the remaining trunk is prevented from falling off, etc., and is efficiently and smoothly nipped and conveyed toward the conveyance belt 3V.

At this time, at least one of the left and right feed chains 50 of the feeder 5 is provided with a clamping width adjusting mechanism 7 so that the stem of the clamping and conveying path 5S can be moved without changing the urging force of the spring 73. Since the holding width can be adjusted by the adjustment interval L, the holding width adjustment mechanism 7 is operated when holding and conveying a relatively small diameter remaining stem, as shown in FIGS. 5A and 5B. By forming such a small-width pinching and conveying path 5S, a small-diameter residual trunk can be satisfactorily pinched and conveyed with a suitable pinching pressure in a narrow pinching gap without problems such as dropout during the pinching and conveying. Is what you can do.

When a standard trunk diameter remaining trunk or a relatively large diameter remaining trunk is to be nipped and conveyed, the guide piece 70 is operated by operating the nipping width adjusting mechanism 7 as shown in FIG. Adjustment interval L
By only moving the stem backward, the stem stem holding width in the sandwiching and conveying path 5S can be widened without changing the clamping pressure of the spring 73, so that the conveyance resistance due to the conveyance of the remaining trunk with excessive clamping force can be increased. It is possible to smoothly pinch and convey without causing any trouble such as breakage of the remaining stem due to crushing.

Then, the nipping conveyance path 5S is moved by the nipping width adjusting mechanism 7 which is opposed to the upper part of the excavation part 6.
The remaining trunk is properly pinched by the pinch width adjusting mechanism 7 of the pinch transport path 5S according to the diameter of the stem, and the root is dug up by the excavation rotary 6b while being ridged and free. Even when the soil is dropped, the remaining trunk is prevented from being pulled out or falling down, and the rear conveyor belt 3
V can be satisfactorily transferred to V, and processing such as cutting by the remaining trunk processing unit 3 can be performed efficiently and smoothly.

Next, another embodiment of the clamping width adjusting mechanism 7 will be described with reference to FIG. This clamping width adjustment mechanism 7
The switching means 8 is provided at the end of the guide rod 72 with a switching hole 80 for a small-width transport path and a switching hole 81 for a wide-width transport path at a predetermined interval (adjustment interval) L. 8
And a spring 73 for urging the guide piece 70 has a length for the small-width conveyance path shown in FIG. And a short spring having a length for the wide conveyance path shown in FIG. 4B having substantially the same spring constant.

With this configuration, when the switching pin 82 is inserted and locked in the switching hole 80 at the end with the long spring 73 inserted into the guide rod 72, the guide piece 70 is shown in FIG. By guiding the left feed chain 50 at the position, a narrow holding conveyance path 5S can be formed between the left feed chain 50 and the right feed chain 50, while the short spring 73 is inserted into the guide rod 72. Switching hole 81 halfway in the state
When the switching pin 82 is inserted and locked in the
Retreats to the position shown in FIG. 7B, guides the left feed chain 50, and generates a wide clamping conveyance path 5S corresponding to the adjustment interval L between itself and the right feed chain 50 to reduce the clamping pressure. It can be formed without changing.

The above-described nipping transport path 5S is provided with a guide piece 70 having a nipping adjusting mechanism 9 as shown in FIG. By connecting to the guide piece 70 of FIG. 7 via the connection link 76, the holding width position and the holding pressure of the guide piece 70 adapted to the trunk diameter may be adjusted strongly. That is, the guide piece 70 shown in the drawing is loosely supported by the adjustment cylinder 90 side of the holding adjustment mechanism 9 in the cylindrical support rod 77 pivotally connected via the connecting pin, and the spring 73 is inserted therein. 72 is slidably fitted.

The adjusting cylinder 90 is rotatably and slidably inserted into and supported by a through hole 91 formed in the guide frame 71, and an engagement portion 92 protruding from the outer periphery of the guide frame 71 is formed on the adjusting cylinder 90.
In the engaged state shown in which the engaging portion 92 is engaged with the lower engaging groove 93, the guide piece 70 is moved backward to carry the nipping conveyance. Route 5
The holding width of S is increased so that a large diameter remaining trunk can be held and transported satisfactorily. When the engaging portion 92 is engaged with the upper engaging groove 93, the guide piece 70 is moved to reduce the holding width of the holding and conveying path 5 </ b> S, so that the small-diameter remaining trunk can be held and transferred. And the engaging portion 92 is formed in the middle engaging groove 9.
When engaged with No. 3, it is possible to easily adjust and form the nipping transport path 5S for nipping and transporting the remaining trunk having a standard trunk diameter.

The above-described holding width adjusting mechanism 7 can also be held by positioning and tightening a suitable number of elongated mounting holes 77 formed in the guide frame 71 with the mounting screws 78 with respect to the transport frame 5F. Width adjustment mechanism 7 is feed chain 50
The sliding inside can be guided appropriately.

[0041]

According to the present invention, the following effects can be obtained by the configuration described above. When the stem is pinched and conveyed by the feed chain and fed to the stem processing section, the inside of the feed stem on the stem convey side is guided in sliding contact with a chain guide urged by a spring, and the chain guide is pinched by By adjusting the stem width of the feed chain in the nipping / conveying path via the adjustment mechanism, a wide nipping / conveying path for nipping / conveying the stem properly according to the trunk diameter, and a small width Since it is possible to easily switch to the transport route, it is possible to prevent the stem from falling off during the transport of the stem and the middle of the stem from being cut off due to crushing.

Also, by moving the chain guide without changing the spring pressure, the stem stem clamping width of the feeding and transporting route of the feed chain is adjusted.
It is possible to easily switch between a wide clamping conveyance path that clamps and conveys a large stem and a small clamping conveyance path that clamps and conveys a small stem without changing the clamping pressure of the stem. In addition, dropping or crushing during the transfer can be properly prevented, and good squeeze and transfer suitable for the trunk diameter can be performed.

Further, by adjusting the stem width of the stem of the feed chain at a position opposed to the excavated portion located below the feed chain, the stem can be accurately adjusted to the feed chain when excavating the stem. The root part can be sufficiently subjected to soil removal and root loosening by the excavation rotary, and in a regular posture to the stem processing part while being prevented from becoming a greatly inclined and deteriorated posture. It can pinch and transport efficiently.

[Brief description of the drawings]

FIG. 1 is a side view showing a remnant processing machine of tobacco.

FIG. 2 is a plan view showing a configuration of a preprocessing unit in FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4A is a plan view showing a support structure of a feeder.
FIG. 3B is a front sectional view of the feeder in an expanded path portion.
(C) is a top view which shows the structure of a feed chain, and the aspect of clamping of the remaining culm.

FIG. 5A is a plan view showing the structure of a feed chain transport path and a holding width adjusting mechanism. FIG. 4B is a plan view showing the attitude of the chain guide in a narrow conveyance path. (C) is a plan view showing the attitude of the chain guide in a wide transport path.

FIG. 6 is a plan view showing a structure of a holding width adjusting mechanism according to another embodiment, in which (A) shows a posture of a chain guide in a narrow conveying path. (B) is a plan view showing the posture of the chain guide in a wide transport path.

FIG. 7 is a plan sectional view showing another adjustment structure of the chain guide.

[Description of Signs] 1 Traveling Aircraft 2 Pre-Processing Unit 3 Remaining Trunk Processing Unit (Stem Trunk Processing Unit) 5 Feeder 5F Transport Frame 5H Expanding Path 5K Transport Path 5P Nipping Start Point (Nipping Start Position) 5S Nipping Transport Path 6 Excavation Raised portion 7 Nipping width adjusting mechanism 8 Switching means 8a Switching tool 50 Feed chain 51 Idling wheel 52 Drive wheel 55 Conveyor pawl 56 Connecting link 70 Guide piece (chain guide) 71 Guide frame 71a Support section (guide hole) 72 Guide rod 73 Spring A Remaining culm processing machine (Stem stem processing device) L Adjustment interval

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Eisuke Takagi 667 Idai-cho, Iza-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B034 AA05 BA06 BA07 BB04 BC06 FA01 FB05 FB07

Claims (3)

[Claims] 1. A stem stem treatment device for treating an implanted stem such as a tobacco by nipping and conveying the stem with a feed chain with a stem treatment unit, wherein the feed chain is stretched over a driving wheel and an idler wheel. The inner side of the stem transfer side is configured to be slidably guided by a chain guide, and the chain guide is configured such that the stem width of the feed chain can be adjusted via the holding width adjusting mechanism. Stem stem processing equipment. 2. The stem stem treatment apparatus according to claim 1, wherein the stem guide is moved without changing the stem stem clamping pressure to adjust the stem stem clamping width of the nipping and conveying path of the feed chain. 3. The stem processing apparatus according to claim 1, wherein the stem width of the stem in the feeding and conveying path of the feed chain is adjusted at a portion facing a dug portion located below the feed chain.