JPH051685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a digging machine, for example, one for digging harvested products such as onions and potatoes and discharging them into a field.

(Prior Art) Conventionally, this type of digging machine has been equipped with, for example, a rear conveyor connected to the rear of the digging body, and grooves or guardrails formed in the left-right direction at the rear lower part of the rear conveyor. However, there is a structure in which a transverse conveyor for carrying in the harvest from the rear conveyor is engaged with this groove or guide rail so as to be movable in the left and right direction.

(Problems to be Solved by the Invention) According to the above structure, the groove or guide rail that guides the lateral movement of the lateral conveyor is provided at the lower part near the ground, so it is possible to monitor the progress of the digging work and the condition of the field. Depending on the work conditions, dirt, stones, dust, etc. may get into the grooves or guide rails, or become entangled, making the lateral movement of the lateral conveyor smooth, uncertain, or even impossible. There is a problem in that, after the harvested product in one step is conveyed by the transverse conveyor, it cannot be discharged toward the center of the lower part of the transverse conveyor in the direction of travel.

Therefore, the present invention was made in view of these points, and it is possible to always move the horizontal conveyor smoothly and reliably without being affected by soil, stones, dust, etc., and also to The harvested material can be discharged toward the lower part of the horizontal conveyor, and as a result, the horizontal conveyor can collect the harvested materials for each process in a gathered state in the field, and also The object of the present invention is to provide a digging machine that can streamline post-work on harvested products.

[Structure of the invention]

(Means for Solving the Problems) The digging machine of the present invention includes a main body frame, a digging body provided at the front lower part of the main body frame for digging up the harvested material, and a digging body provided at the lower front side of the main body frame to dig up the harvested product, a rear conveyor for conveying the harvested material from the trenching body rearward; horizontal feed conveyor,
The traverse conveyor is rotatably provided with respect to the unloading section of the endless rotating body, and when engaged with the main body frame, it rotates downward so as to block the outside of the unloading section of the endless rotating body to collect the harvested material. The chute body is equipped with a chute body that upwardly rotates to guide the body inwardly and to open the carrying-out portion of the endless rotating body when separated from the main body frame.

(Function) The digging machine of the present invention is connected to, for example, a three-point suspension mechanism of a tractor, and the input shaft of the transmission of the machine is connected to the power take-off shaft of the tractor. In addition, when the transverse conveyor of this machine is moved laterally so that the chute body and the reaction side protrude outward, the chute body is engaged with the main body frame and moved outward from the unloading section of the endless rotating body. The conveyor is rotated downward so as to block the flow of the harvest, and is set in preparation for guiding the harvest, and the endless rotating body of this traversal conveyor is set to rotate in the direction of transporting and discharging the harvest. Then, the power of the tractor is transmitted to the input shaft, and the power input from the input shaft to the transmission causes the endless rotating body of the rear transport conveyor to rotate rearward, and also rotates the endless rotating body of the lateral conveyor. Rotate in the set direction.

Next, the machine is towed by a tractor, and the harvested materials in the field are sequentially dug up by the digging body and transported to the loading section of the rear conveyor, where the soil is shaken off and directed backwards. At the same time, each harvested product is sequentially transported from the output section to the input section of the lateral conveyor, and each harvested product is sequentially transported toward a preset side section in the direction of travel while the soil is further shaken off. While being conveyed, the crops are sequentially discharged from the discharge section toward the chute body, and each crop is further guided by the chute body and sequentially discharged toward the field in the center in the traveling direction at the lower part of the transverse conveyor. Ru. Therefore, the harvested products for one process are left concentrated in a single row approximately at the center in the direction of travel.

Next, the tractor turns the machine toward the return trip, moves the traversal conveyor laterally in the opposite direction to the outbound trip, and the chute body is separated from the main body frame, and the chute body is automatically raised. Rotate to open the unloading section of the endless rotating body. In addition, this traversal conveyor is moved horizontally by a relatively large distance, and this endless rotating body is switched so as to rotate in the opposite direction to that in the outgoing route, so that the harvested products are directed toward the harvested products on the home route. Allow it to be released.

Then, when the machine is towed again by the tractor and the opposite-end rotating body of the rear transport conveyor and the endless rotating body of the cross-feeding conveyor are rotated in the set direction, the trench is dug in the same way as in the case of the outward journey. Each crop that has been raised is sequentially discharged toward the outbound crop by the endless rotating body of the traverse conveyor. Therefore, the harvested products on the return trip are collected in rows, and the harvested products for the two steps are left in the collected state.

In this way, the direction of the machine is changed by the tractor, the traverse conveyor is switched and moved in the lateral direction according to the direction of movement, and the chute body is automatically moved up and down by moving toward and away from the main frame. By switching and setting the rotating direction of the endless rotating body according to the moving direction of this traversal conveyor, multiple rows of harvested products are left together in a concentrated state.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, 1 is a main frame, and this main frame 1 has a main frame 2 extending in the left and right direction, and side frames 3, 3 arranged opposite to each other at both left and right ends of this main frame 2. The upper part of the front end is fixed to one piece. Further, between the left and right side frames 3, 3 of the main body frame 1, a moat raising body 4 made of a metal tip is protruded from the lower front end thereof, and the rear end of this moat raising body 4 serves as a rear conveyor. The sifting conveyor 5 is arranged in a row so as to be inclined upwardly at the rear so that it can rotate freely. This soil sifting conveyor 5 includes a driven roller 6 that is rotatably mounted on a shaft at the lower part of the front side, a drive roller 7 that is rotatably mounted on the shaft at the upper part of the rear side, and a roller that can freely rotate between these rollers 6 and 7. It is composed of a suspended endless rotating body 8. Further, a case body 11 is provided in the middle part of the main frame 2, and a case body 11 is provided in which a transmission 10 is rotatably protruded with the input shaft 9 facing forward.
The interlocking shaft 13 whose inner end is connected to the main frame 2
The outer end of the interlocking shaft 13 and one end of the drive shaft 14 having the drive roller 7 of the soil sorting conveyor 5 are connected to the interlocking medium 16 provided inside the case body 15. are interlocked and connected via. Further, the transmission 10 is provided with a second output shaft 17, and this second output shaft 1
7 is adapted to be switched in the forward or reverse direction via a switching mechanism by the switching operation of the switching lever 18.
One end of the operating rod 9 is rotatably connected to the operating rod 1.
A handle 21 having a display section 20 of 9 extends forward, and by operating this handle 21, the second output shaft 17 of the mission 10 is switched between forward rotation, reverse rotation, and neutral state, and this setting position is changed. Display section 2
It is now displayed as 0.

Next, the front ends of the connecting frames 22, 22 are fixed to the upper rear ends of the left and right side frames 3, 3, and the left and right connecting frames 22, 22 extend rearward in parallel. A pair of suspension frames 23, 23 are fixed in parallel between the front and rear ends of the left and right connecting frames 22, 22, and the left and right ends of the front suspension frames 23 are Drive roller 24 and suspension roller 2
5 is rotatably mounted on a shaft, and a plurality of guide rollers 26 are rotatably mounted on a shaft between the driving roller 24 and the suspension roller 25. Hanging rollers 27, 27 are rotatably mounted on the shafts, and a plurality of guide rollers 28 are rotatably mounted between the left and right hanging rollers 27, 27.
The drive roller 24 provided on the front suspension frame 23 and also used for suspension is rotatably inserted into the insertion hole 29 of the front suspension frame 23 and rotated by a bearing body 30. The drive roller 24 is fixed to the rear end of a rotary shaft 31 that is freely mounted and can be rotated in forward and reverse directions, and a winding recess 33 with a reduced diameter is formed between the left and right support parts 32, 32 on the outer circumference of the drive roller 24. There is. Further, one end of an interlocking shaft 35 is connected to the front end of the rotating shaft 31 having the drive roller 24 via a universal joint 34, and a handle is connected to the other end of the interlocking shaft 35 via a universal joint 36. 37 are connected to each other, and the handle 37 and the handle 21 are rotatably supported by a connecting frame 38 that projects forward from the main body frame 1.

Further, 39 is a transverse conveyor, and this transverse conveyor 39 has plate-shaped conveyor frames 40, 40 arranged in parallel at a predetermined interval in the front and rear, and the upper end of the conveyor frame 40 in the front part. A U-shaped guide rail 4 that engages with the drive roller 24, suspension roller 25, and guide roller 26 at the portion thereof.
1 is fixed to the rear conveyor frame 40.
A U-shaped guide rail 4 that engages with the suspension rollers 27, 27 and the guide roller 26 at its upper end.
2 is fixed, and the front and rear guide rails 41, 4
Connecting plates 43, 43 are fixed between the left and right ends of 2. Further, within the front guide rail 41, a wire 44 is wound once within the winding recess 33 of the drive roller 24, and the wire 44 is wound only one time.
One end of the wire 44 is locked to an adjusting screw 45 that is attached to the connecting plate 43 on the one side so that it can be adjusted forward and backward, and the other end of this wire 44 is attached to the connecting plate 43 on the other side so that it can be adjusted forward and backward. It is locked to a freely mounted adjustment screw 46. Further, a guide port 48 that faces the carrying-out section 47 of the soil sifting conveyor 5 is formed at approximately the middle of the front conveyor frame 40 and has a relatively large opening. Further, rotary shafts 49, 49 are rotatably inserted through insertion holes 40a, 40b into the lower portions of the front conveyor frame 40 and the rear conveyor frame 40 near both left and right ends.
Sprockets 50, 50 are rotatably mounted on the front and rear of the left and right rotating shafts 49, 49, respectively, and between the left, front and rear sprockets 50, facing endless chains 51, 50 are provided with a predetermined interval. An endless rotating body 53, which is constituted by a large number of horizontal rods 52 rotatably arranged in parallel, is suspended in a freely rotating manner. Further, long guide grooves 54, 54 that are long in the left and right direction are formed opposite to each other in the middle lower part of the front conveyor frame 40 and the rear conveyor frame 40, and a drive shaft 5 is formed in the front and rear guide grooves 54, 54.
5 is rotatably inserted through the drive shaft 55, and sprockets 56, 56 are fixed to the front and rear of the drive shaft 55 for meshing with each horizontal rod 52 of the endless rotating body 53 and driving it to rotate. Both ends in the axial direction are rotatably suspended horizontally on brackets 59, 59 fixed to the front and rear support frames 58, 58 via bearings 57, 57, and both ends of the front and rear support frames 58, 58 are It is connected between the lower ends of the left and right side frames 3, 3. Further, a chain case 60 is installed between the front and rear brackets 59 and the intermediate portion of the rear suspension frame 23.
is attached, and one end of the drive 55 is rotatably protruded into the lower part of the chain case 60, and an interlocking shaft 61 is rotatably suspended in the upper part of the chain case 60. One end is rotatably protruded, and one end of the interlocking shaft 61 and one end of the drive shaft 55 are connected to the sprocket 6, respectively.
2 and 63, and are rotatably connected by an endless chain 64. The other end of the interlocking shaft 61 is connected to the second output shaft 17 of the mission 10, and the interlocking shaft 61 is rotatably inserted into the case body 65.

Next, the front and rear conveyor frames 40, 40
A chute body 66 is attached to one end in the left-right direction so as to be rotatable with respect to the conveyance section of the endless rotating body 53. This chute body 66 has rotating arms 67, 67 attached to both ends of the rotating shaft 49 on one side in the left and right direction.
One end is rotatably attached to a shaft, and a support rod 68 is fixed between the other ends of the front and rear rotating arms 67, 67, and an arc-shaped support rod 68 is provided at a predetermined interval in the axial direction of the support rod 68. A large number of curved guide rods 69 protrude inward. Also, a stopper 7 that engages and disengages from the side frame 3 on one side is located in the middle of the front arm 67.
0 protrudes, and a coil spring 71 is stretched between the rear rotating arm 67 and the rear conveyor frame 40.
The coil spring 71 urges the shoot body 66 to rotate upward about the rotation shaft 49. In addition, reference numeral 72 in the figure indicates rotation arms 67, 6 screwed to both ends of the rotation shaft 49.
The retaining nut 7 and 73 are sled-shaped grounding bodies that are adjustably attached to the left and right side frames 3, 3.

Next, the operation of the above configuration will be explained.

The three-point connecting portions of the connecting frame 38 of this machine are connected to each connecting portion of the three-point suspension mechanism of the tractor, and the input shaft 9 of the mission 10 is connected to the power take-off shaft of the tractor via a power transmission shaft.

Next, when the switching mechanism of the mission 10 is switched by the handle 21 via the operating rod 19 and the switching lever 18, the second output shaft 17 of the mission 10 is switched to, for example, the forward rotation direction. Further, the rotation direction of the second output shaft 17 can be visually confirmed in the operating section by the display section 20 of the handle 21. Thereby, the endless rotating body 53 of the traverse conveyor 39 is set to rotate, for example, toward the right side in the traveling direction.

Further, when the handle 37 is rotated, the rotating shaft 31 is rotated via the interlocking rod 35, and
The drive roller 24 is rotated, and this drive roller 24
As a result of the rotation, the wire 44, which has been partially wound and tensioned in the winding recess 33, is wound around the drive roller 24 while repeating winding and unwinding in the winding recess 33.
By pulling the wire 44 by the drive roller 24, the transverse conveyor 39 moves the front and rear drive rollers 24, the suspension rollers 25, the guide rollers 26, 26, and the left and right suspension rollers 27, 2.
7. It is moved, for example, toward the left side in the traveling direction via the front and rear guide rails 41, 42 suspended by guide rollers 28, 28. Then, the lateral conveyor 39 is largely projected to the left in the direction of travel,
Stopper 7 on the right side chute body 66
0 is engaged with the right side frame 3, when the traverse conveyor 39 is further moved to the left in the traveling direction, the chute body 66 resists the coil spring 71 around the rotation axis 49 and rotates. While being extended, each guide rod 6 is gradually rotated downward.
9 is automatically rotated downward to a position where it blocks the discharge end of the endless rotating body 53 of the traverse conveyor 39. As a result, each guide rod 69 of the chute body 68 is set to project inward from the outside of the unloading end of the endless rotating body 53, and to discharge the harvested product toward the center in the traveling direction. Ru. Further, when the cross conveyor 39 is moved toward the left side in the traveling direction as described above, the conveyor frames 40, 40 before and after the cross conveyor 39 are guided relative to the drive shaft 55, and this is not used as a guide. The front and rear conveyor frames 40, which are moved via the long grooves 54, 54,
40, the endless rotating body 53 meshed with the front and rear sprockets 56, 56 of the drive shaft 55 is rotated and moved. Therefore, the drive roller 4
By the pulling operation of the wire 44 by the wire 44, the traverse conveyor 39 is smoothly moved to the left in the direction of movement, and is ready for the digging operation in the first step.

Next, when power is transmitted from the tractor to the input shaft 9, the first and second output shafts 12, 17 of the transmission 10 are rotated in the setting direction, and the rotation of the first output shaft 12 causes the interlocking shaft to 13 and the interlocking medium 16, the endless rotating body 8 of the soil sorting conveyor 5 is rotated rearward, and the rotation of the second output shaft 17 causes the case to be rotated. The drive shaft 55 is rotated via the interlocking shaft 61 and the endless chain 64 in the body 65, and the endless rotating body 53 is rotated to the right in the traveling direction by the front and rear sprockets 56, 56 of the drive shaft 55. will be carried out.

In this state, when the machine is towed through the first process () of the field by a tractor, the harvested materials A are sequentially dug up by the trencher 4, and each harvested material A is transferred to the endless soil sifting conveyor 5. The soil is sequentially carried onto the rotating body 8, where the soil is shaken off and sequentially conveyed backward, and then from the unloading section 47 of the endless rotating body 8 to the endless rotating body 53 of the transverse conveyor 39.
The materials will be transported to the top one by one. In addition, each crop A that has been sequentially carried onto this endless rotating body 53 is further conveyed to the right side in the traveling direction while the soil is further shaken off. They are sequentially carried out from the carry-out section toward the chute body 66. In addition, each crop A carried into this chute body 66 is sequentially guided by each guide rod 69 of the chute body 66 and is sequentially released toward the center in the traveling direction, that is, toward the center of the path of the machine. Ru.
In this way, the crops A dug up in the first step () are gathered together in the center in the direction of travel and grouped into one row (-A).

Next, the tractor is used to change the direction of the machine to the left side of the traveling direction in the first step, and this is the second step, and the handle 37 is rotated again to move the rotating shaft 31 through the interlocking rod 35 as described above. When the wire 44 is rotated in the opposite direction, the tensioned wire 44 partially wound inside the winding recess 33 by the driving roller 24 repeats winding and unwinding into the winding recess 33 . It is pulled in the rotating direction of the drive roller 24, which is rotated in the opposite direction. Therefore, the lateral conveyor 39 includes the left and right drive rollers 24, the suspension rollers 25, the guide rollers 26, 26, and the left and right suspension rollers 2, as in the above case.
7, 27, and the guide rollers 28, 28 through the front and rear guide rails 41, 42, and are moved toward the right side in the direction of movement in the second step. Further, as the traverse conveyor 39 moves to the right, the stopper 70 of the chute body 66 separates from the right side frame 3, and as it contracts due to the return force of the coil spring 71, the chute body 66 moves around the rotating shaft 49. As the center is gradually rotated upward, each guide rod 69 is automatically rotated upward to a position where the unloading end of the endless rotating body 53 of the traverse conveyor 39 is opened.

Further, when the switching mechanism of the transmission 10 is operated by the handle 21 via the operating rod 19 and the switching lever 18 in the opposite direction to that in the above case, the second output shaft 17 of the transmission 10 is switched and set to the reverse rotation direction. Ru. As a result, the horizontal feed conveyor 39
The endless rotating body 53 is set to rotate toward the left in the direction of movement in the second step ( ), and the unloading end of the endless rotating body 53 is arranged in a row in the first step. It can be set so that the crop A can be released towards the harvested crop (-A). In this way, preparations are made for the digging work in the second step ().

Next, in the second step (), the endless rotating body 8 of the soil sifting conveyor 5 and the endless rotating body 53 of the cross-feeding conveyor 39 are rotated in conjunction with each other in the same way as in the above case using the power from the tractor. , This tractor tows the machine through the second process ( ) adjacent to the first process ( ), and the harvested product A in the second process ( ) is collected by the digging body 4 in the above case. In the same manner as above, the soil is dug up one after another, and is carried from the endless circulating body 8 of the soil sifting conveyor 5 to the endless circulating body 53 of the traverse conveyor 39, and this harvested material A is further conveyed to the endless circulating body 53. The materials are sequentially discharged from the discharge end toward the adjacent ones that have been grouped into a single row (-A) in the first step (). In this way, each crop A that has been collected in sequence in the second step () is grouped in one row (-A) in the advancing direction, and therefore, in the first step ()
and the harvested product (-A) for 2 steps of the 2nd step ()
(-A) are collected in a row and aggregated.

Then, the tractor changes the direction of the machine to the right side of the traveling direction in the second step, and this is the third step, and the switching mechanism of the mission 10 is changed to the third step using the handle 21 via the operating rod 19 and the switching lever 18. When the switching operation is performed in the opposite direction to the case of 2nd step (), the second output shaft 1 of the mission 10
7 is again switched to the normal rotational direction. As a result, the endless rotating body 53 of the traverse conveyor 39 is set to rotate toward the right side in the direction of movement in the third step ( ), and this endless rotating body 5
The discharge end of No. 3 is set so that the harvested product A can be discharged toward the harvested product (-A) that has been consolidated in the second step. In this way, preparations are made for the digging work in the third step ().

Next, in the third step (), the endless rotating body 8 of the soil sifting conveyor 5 and the endless rotating body 53 of the cross-feeding conveyor 39 are rotated in conjunction with each other in the same way as in the above case, using the power from the tractor. , This tractor tows the machine from a position adjacent to the second process ( ) to the third process ( The soil is excavated sequentially as in the case of , and is carried from the endless rotating body 8 of the soil sifting conveyor 5 to the rotating body 53 of the lateral conveyor 39,
Furthermore, this harvested material A is transported to the endless rotating body 53.
is sequentially discharged from the unloading end toward the adjacent one grouped in one row (-A) in the second step (). In this way, each crop A that has been sequentially gathered in the third step () is grouped in one row (-A) in the advancing direction, and therefore, The harvested products (-A) (-A) (-A) for the three steps () and the third step () are collected in a row and concentrated. During the digging operation of the harvested product A in the third step, the cross-feeding conveyor 39 is moved to the right in the traveling direction and is largely protruded, so that the chute body 66 at the discharging end of the endless rotating body 53 is The coil spring 71 continues to rotate the product upwardly, and the outside of its unloading end is open. Therefore, the harvested product A is transferred from the unloading end of the endless rotating body 53 to the second step. It is smoothly released towards the crop (-A) at (). In this way, the work of digging and harvesting the harvested product A from the first step to the third step can be carried out sequentially, but if the work of the fourth step is to be carried out following the third step (), In this case, the cross conveyor 39 is set as in the case of the first step (), and when performing the work of the fifth step,
The cross-feeding conveyor 39 is set as in the case of the second process (), and when further performing the work of the sixth process, the cross-feed conveyor 39 is set as in the case of the third process (). According to the first
The work from step () to the sixth step can be performed continuously, and the work from the first step () to the third step can be performed continuously.
As in the case of step (), the movement of the transverse conveyor 39 in the left-right direction and the rotation direction of the endless rotating body 53 of this transverse conveyor 39 are sequentially switched and set, and this is repeated to further perform continuous work. In addition, the chute body 66 is automatically rotated up and down about the rotation shaft 49 in connection with the movement of the lateral conveyor 39 in the left and right direction.

In the embodiment described above, the drive roller 24 that pulls the wire 44 is driven remotely from the driver's seat or the like by manual operation using the handle 37, but the drive roller 24 is not limited to this. It may also be remotely driven by a reversible electric motor or the like.

(Effects of the Invention) According to the present invention, since the lateral feed conveyor is suspended from the rear part of the main body frame so as to be movable in the left and right direction,
The cross-feed conveyor can always move horizontally smoothly and reliably without being affected by dirt, stones, dust, etc. This allows multi-step work to be performed continuously by sequentially moving the cross-feed conveyor laterally. Moreover, since the endless rotating body of this transverse conveyor can be freely switched between forward and reverse directions, this transverse conveyor ensures that the harvested products for each process in multiple rows are brought together in the field. Furthermore, a chute body is rotatably provided to the unloading section of the endless rotating body of the traverse conveyor, and this chute body is moved relative to the main body frame by the lateral movement of the traverse conveyor. Since the chute body is designed to move up and down by moving toward and away from the conveyor, the chute body automatically opens and closes the outside of the unloading section of the endless rotating body in conjunction with the switching operation of the lateral movement of the traverse conveyor. Moreover, the switching setting can be made reliably, and as a result, the harvested products in the first step, which cannot be released to the sides in the traveling direction, can be smoothly released toward the lower part of the lateral conveyor. Therefore, it is possible to provide a digging machine that can carry out a desirable start operation, and can therefore perform post-work such as picking up the harvested products with high efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the digging machine, Fig. 2 is a plan view of the same, Fig. 3 is an enlarged rear view of the same, and Fig. 4 is a line a to a of the same. FIG. 5 is a side view of the lateral conveyor, FIG. 6 is an enlarged sectional view of the section b to b in FIG. 3, and FIG. 7 shows a part of the suspension movement mechanism of the lateral conveyor. FIG. 8 is an enlarged sectional view, FIG. 8 is a partially cutaway plan view showing the chute mechanism, and FIG. 9 is an explanatory view showing an example of the work process. 1...Main frame, 4...Horizontal structure, 5...Back conveyor, 39...Transverse feed conveyor, 49
... Rotating shaft, 50 ... Sprocket, 53 ... Endless rotating body, 66 ... Shoot body, 67 ... Rotating arm, 69 ... Guide rod, 70 ... Stopper, 7
1...Coil spring.

Claims (1)

[Scope of Claims] 1. A main body frame, an excavation body provided at the front lower part of the main body frame for digging up crops, and an excavation body provided on the main body frame with an upward slope at the rear to dig up the crops. a rear conveyor for conveying rearward; a cross conveyor which is suspended from the rear part of the main body frame so as to be movable in the left and right directions, and whose endless rotating body can be rotated in forward and reverse directions; It is rotatably provided with respect to the carrying-out part of the endless rotating body, and when engaged with the main body frame, it rotates downward so as to block the outside of the carrying-out part of the endless rotating body and guides the harvested product inward. An excavator characterized by comprising: a chute body that rotates upwardly to open a carrying-out portion of the endless rotating body when separated from the main body frame. 2 The chute body has rotating arms on both sides rotatably attached to both ends of the rotating shaft of the sprocket on which the endless rotating body of the lateral feed conveyor is suspended, and the outer side of the rotating arms on both sides A large number of guide rods for guiding the harvested material inward are arranged in parallel between the ends, a stopper that is fixed to the main body frame is provided protruding from one of the rotating arms, and the other rotating arm is attached to a spring. An excavator according to claim 1, characterized in that the excavator is energized by.