JP2561483Y2 - Step support structure for agricultural harvester - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for an operator's step in an agricultural cropping machine mainly for harvesting root vegetables such as sweet potato, potato, onion, beet, taro, konjac potato, and carrot. Things.

[0002]

2. Description of the Related Art Conventionally, agricultural harvesters for harvesting root crops include, for example, potato harvesters, beet harvesters, potato diggers, riding tractors or walking tractors equipped with a digging blade, and the aforementioned digging blade. The one equipped with a digging conveyor device with a link rod chain conveyor connected to the rear, the one that vibrates the link rod chain conveyor, the self-propelled harvester,
There are known those provided with a rotatable worker step between a use state and a storage state.

[0003]

[Problems to be Solved by the Invention] The above-mentioned potato harvester, beet harvester, potato digger, etc. are large like imported products, and suitable for use in large-scale fields such as Hokkaido, but small-scale. It was not suitable for use in a natural field, and was a dedicated machine with poor versatility. Further, a tractor with a digging blade mounted on a riding tractor or a walking tractor, a tractor with the digging conveyor device mounted thereon, a tractor that vibrates the link rod chain conveyor, and the like may be used in a small-scale field. Although it was developed so that it can be done, only the root vegetables as described above are dug and released into the field, and this dug root vegetables require a work process of picking up and sorting separately. Was.

Further, in a self-propelled harvester provided with a worker step that can be rotated between a use state and a storage state, the step can only be rotated in two stages of a use state and a storage state. In the case where the step touches the ridge at the time of turning the body at the field end, there is a problem that the step is rotated to the storage state and extra movement is required. The present invention has been made to solve the above problems.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a harvester for harvesting agricultural products vegetated in a field, comprising a worker step which can be rotated between a use state and a storage state. In the self-propelled agricultural product harvester provided with the above, the step for the worker is such that the rotating posture is held by the toggle action of the spring device at the time of turning, and the spring device is provided with a plurality of holding portions. Features.

[0006]

With the above construction, the step support structure for the agricultural product harvester of the present invention has a plurality of rotation positions held by the toggle action of the spring device when the step is turned, and is held in the middle between the use state and the storage state. As a result, there is no need to rotate the steps to the stowed state when the body turns. Moreover, when it turns to the stored state, it is securely held at that position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3, reference numeral 1 denotes a potato harvester. The potato harvester 1 has a body 2 equipped with a crawler 3, an engine part 4 provided on one side of the body 2, and a fuel tank 4a is provided. The engine section 4 includes an engine, a generator driven by the engine, a hydraulic pump, and the like (not shown). A control unit 5 is provided behind the engine unit 4, and a control seat and work seat 6 is provided further behind the control unit 5. From the lower front of the fuselage 2 to the upper center of the fuselage, a digging conveyor device 7 that excavates agricultural products and conveys it backward is provided. The excavating conveyor device 7 is inclined so that the tip side descends. The base is pivoted.

In the excavating conveyor device 7, excavating blades 9 are attached to the end portions of left and right side frames (frames) 8, 8, and excavating conveyors 10 formed of link rods are provided between the side frames 8, 8.
The lower end of the inclined body is rotatable in the vertical direction about a rotating part 10a at the upper end of the inclined body, and the hydraulic cylinders 11, 11 provided between the body 2 and the side frames 8, 8 are operated to extend and retract. Dynamic adjustment, that is, adjustment of the digging depth, is performed, and the digging conveyor 10 can be folded to the fuselage side from the middle of the side frames 8, 8. The operation is performed by a hydraulic cylinder (not shown). The digging conveyor 10 can adjust its moving speed steplessly or stepwise. The brackets 12, 12 projecting forward from the left and right side frames 8, 8 are provided with a ridge follower 13, which follows the machine body along the length of the ridge to be harvested.

The ridge following device 13 is provided with a pair of wheels 14, 14 that are in contact with the inclined shoulders of the ridge to be harvested facing each other, and the wheels 14 are moved to the digging conveyor device 7 by a vertical adjustment mechanism 15. It is supported so that it can be adjusted up and down and can be adjusted left and right by slide mechanisms 16 and 16. The pair of wheels 14, 14 have a camber angle and a toe-in. On the side of the excavating conveyor device 7, an auxiliary worker seat 17 for selecting and sorting harvested products conveyed by the excavating conveyor 10 is detachably provided. At the rear part of the fuselage behind the digging conveyor device 7, a flat belt-shaped sorting conveyor device 18 for carrying out the sorting operation while placing and transferring the harvested material is arranged, and the sorting conveyor device 18 is transferred. Sorting work can be performed on both sides in the direction.

The cockpit / working seat 6 is opposed to the control unit 5 and is located on the side of the sorting conveyor device 18. An operator seat 19 and a step 20 are provided, and a worker sitting on the cockpit / work seat 6 can perform both the manipulation work and the sorting work at the same position. A control section step 5a and a sorting step 21 are provided below the fuselage. The cockpit / work seat 6, the auxiliary worker seat 17, and the worker seat 19
Can be rotated on the spot, and height and slide can be adjusted. Steps 20 and 21
Is provided low so as to be easy to climb from the ground behind the crawler 3, and is rotatable in a front-rear direction (or a left-right direction) between a use state and a storage state.
It is made to fit within the width of.

As shown in FIG. 8, the step 20 (21) is rotatably supported by the body via a support shaft 20a between a use state (solid line) and a stowed state (dotted line). One end of a spring plate 25 curved in an arc shape is fixed to a side portion of the step 20 by a fixing screw 20b, and the other end of the spring plate 25 is bent into a hairpin shape. The engaged locking pin 25a is inserted. In the bent portion, the engagement recess 25 is provided.
b and 25c are formed. When the step 20 is in the use state, the bent portion of the spring plate 25 contacts the locking pin 25a to support the step 20, and when the step 20 is in the housed state, the engaging recess 25b of the spring plate 25 is When the step 20 is held in the housed state by engaging with the locking pin 25a and the step 20 is set between the use state and the housed state, the engaging recess 25c of the spring plate 25 is engaged with the locking pin 25a. Step 20 is held at the intermediate position.

In the vicinity of the operator's seat 19, a traveling clutch lever provided on the control unit 5 and a digging conveyor 10 are provided.
The clutch lever 22 which can be operated in conjunction with the clutch lever of the aircraft is provided.
The traveling clutch and the excavating conveyor clutch can be operated. A rake-shaped sieve line 23 shown in FIG. 2 is provided below the end of the sorting conveyor device 18. Further, a use state in which a loading platform 24 for mounting a container (for example, a container) for storing harvested agricultural products is projected outward from the machine body 2 behind the sorting conveyor device 18,
It is provided so that it can be folded to the storage state where it is stored on the side.
The loading platform 24 may be provided detachably with respect to the body 2 and may be provided so as to be vertically adjustable.

In the embodiment shown in FIG. 1, the steering section 5 is provided with steering levers 26, 26.
Instead of 26, a steering handle 27 shown in FIGS. 5 and 6 may be provided. The transmission 28 and the steering operation unit 29 will be described with reference to FIGS. 4 and 5. The transmission 28 receives power from the engine 4 via the belt transmission system 4b and performs a continuously variable hydraulic transmission (HST) 30.
The transmission gear 31 is mounted on the output shaft 30a of the vehicle, so that the speed can be changed between stepless and stepped, and the side clutch 32 is operated by the clutch operation arm 32a and the clutch operation rod 32b. The power transmission to the drive shafts 34, 34 is connected or disconnected, and the crawlers 3, 3 allow the vehicle to travel between the continuously variable speed and the stepped speed. A brake device 35 is provided in association with the differential device 33, and is operated by a brake operation arm 35a and a brake operation rod 35b.

In the steering operation section 29, a steering shaft 27a to which a steering handle 27 is connected is connected to a tight arm 36 via an operation gear 27b, and the tight arm 36 is connected to the clutch operation rod 32b. Cams 37, 37 are formed at the rear of the tight arm 36, and cam followers (rollers) 38, 38 which are selectively in contact with the cams 37, 37 when the steering handle 27 is turned to the left or right greatly are provided. The brake operation rod 35b is connected to the cam followers 38, 38. When the steering handle 27 is turned to the left or to the right, the side clutch 32, the differential mechanism 33, and the brake 35 are operated to turn the airframe in a super-spot.

Also, as described above, the excavating conveyor 10
The traveling speed can be adjusted between stepless and stepped, and the excavation work speed can be freely set by combining this with the stepless or stepped traveling of the crawlers 3. When the potato harvester 1 is not in use, the excavating conveyor device 7 rotates the entire excavating conveyor device 7 or, as shown in FIG. It is designed to be rotatable toward the fuselage and housed. The front and rear length of the fuselage is shortened so that it can be loaded and transported on a light truck bed, and can be stored in a warehouse or the like.

Although not shown, the cockpit / working seat 6 and the worker's seat 19 are provided with a rotary backrest, and are used as a backrest / seat. It is also possible to configure a cockpit / working seat and an operator's seat that can perform a sorting operation in any of the states. Further, a vertical seat / working seat and an operator's seat which can be used both as a rotating backrest and a seat may be used. Both types of seats are rotatable in place and height and slide adjustable. Also, as shown in FIG. 1, a column mounting seat 39 is provided on the side of the fuselage so that the angle and height can be adjusted, and a parasol column (not shown) is mounted on the mounting seat 39, and the cockpit / working seat 6, Auxiliary worker seat 1
7, and the awning of the worker sitting on the worker's seat 19 is performed. In addition, a fan may be attached to the support of the parasol and operated by the electric power generated by the generator to send the wind to the workers.In addition to the fan, household electric appliances such as radios are used. It is possible.

Next, the operation of the peach harvester 1 configured as described above will be described. For example, when harvesting root vegetables such as sweet potatoes, potatoes, onions, beets, taro, konjac potatoes, and short root ginseng from a field, the potato harvester 1 removes the wheels 14, 14 of the ridge following device 13 from the ridges to be harvested. Of the excavating conveyor device 7
Is adjusted up and down by hydraulic cylinders 11 to adjust the digging depth, and the crop is digged by the forward movement of the machine.
And lifts the machine obliquely upward while transporting it with the soil by the digging conveyor 10. During this transportation, soil falls from between the link rods, and the excavating conveyor 10
A worker sitting in the cockpit / working seat 6 and the worker's seat 19 sorts the crops discharged onto the sorting conveyor device 18 from the transport end of the container (container) (container) placed on the loading platform 24. ). The soil and contaminants remaining on the sorting conveyor 18 fall from the transport end to the field.

A ridge follower 13 is provided in front of the excavating conveyor device 7 to follow the machine body along the length direction of the ridge to be harvested, and a pair of wheels which are in rolling contact with the inclined shoulders of the ridge to be harvested. 14 are provided facing each other so as to be vertically adjustable and horizontally adjustable with respect to the excavating conveyor device 7, so that both wheels 14 automatically follow the ridge to be harvested and automatically steer the aircraft, and Automatic excavation / transportation by the take-up conveyor device 7 is performed. Therefore, the operator sitting on the cockpit / working seat 6 can spend most of the time on the sorting work except for the operation of steering the machine at the ridge end of the ridge to be harvested. When the headland turning is performed at the end of the field, if the excavating conveyor device 7 is folded by the hydraulic cylinder, the turning radius can be reduced and the turning can be performed.

Since the crops discharged onto the sorting conveyor device 18 are sorted on both sides in the transfer direction of the sorting conveyor device 18, the crops dug by the dug conveyor device 7 can be sorted efficiently. Since the moving speed of the digging conveyor 10 can be adjusted steplessly or stepwise, the moving speed of the digging conveyor 10 is appropriately selected according to the type of crop to be harvested, the amount of harvest, the state of the field, etc., and appropriate work is performed. You can do it. Since the sorting conveyor device 18 has a flat belt shape, it can cope with many crops to be harvested, and the danger of the sorting operator is small. Among the contaminants, crops and soil that fall onto the sieve line 23 from the transport end of the sorting conveyor device 18,
The soil falls into the field first from between the sieve lines 23, and the crop falls on the soil and is exposed on the soil, so that the harvest can be easily collected. Cockpit and work seat 6 and worker seat 1
Since steps 20 and 21 are provided in correspondence with No. 9, the sorting operation can be performed in a stable posture.

The step 20 (21) is pivotally supported about the support shaft 20a so as to be rotatable between the use state and the storage state, and the locking pin 25a is activated by the toggle action of the spring plate 25.
In the use state, and is held in the housed state (engaging recess 25b). Also, since step 20 (21) can be held in the middle of the use state and the storage state (engagement concave portion 25c), step 20 can be performed when the aircraft turns headland.
The vehicle can be turned around with (21) at the intermediate position, returned to the use state after the turn, and the work can be continued.

The crawler traveling device 3 of the traveling body 2 is connected to a continuously variable transmission mechanism 30 and a brake 35 provided on the traveling body 2 side.
Differential mechanism 33 having a traveling mechanism 31
, It is possible to perform super turning, and in addition to folding and unfolding of the excavating conveyor 10, efficient harvesting can be performed even in a relatively small field. In addition, when the steering operation of the crawler traveling device 3 is performed by one steering handle 27, the steering operation is easier than when the steering operation is performed by the left and right steering levers, and the super turning operation can be easily performed. I can do it. Further, the harvesting device 7 is provided with a digging conveyor 10 at least at a rear portion of the digging blade 9 so that the rotation speed of the digging conveyor 10 can be adjusted steplessly and stepwise. Since it can be set freely, the rotation speed of the excavating conveyor 10 is adjusted according to the field conditions, the state of the agricultural products vegetated in the field, and the like, so that an appropriate harvesting operation is performed.

At the rear of the fuselage 2, a loading platform 24 for placing a container (container) for storing harvested agricultural products is extended from the fuselage 2 to a use state and a storage state to be stored on the fuselage 2 side. Since it is provided so that it can be folded,
With 4 in use, harvested agricultural products can be moved while being sorted and stored in containers. In addition, when the harvesting operation is not performed, the loading platform 24 is kept in the stored state, so that it does not become a hindrance when moving or storing the harvester.

A control device 5 and a seat 6 are provided on one side near the rear of the aircraft.
And step 21, the operator's seat 19 and step 20 are respectively provided on the opposite side of the control device 5, and the worker on the control device 5 side can perform both the control operation and the sorting operation. Since the in-place rotation is possible and the height and slide can be adjusted, the worker sitting on the seat 6 of the control device 5 can easily change the posture to the control operation and the sorting operation. Even a sitting worker can perform sorting work in an easy posture. The control device 5 and the clutch lever 22
With this, the traveling clutch and the excavating conveyor clutch can be operated from either the left or right side of the fuselage, and in the case of an emergency, both the left and right workers performing the sorting work can stop the running of the aircraft and the excavating conveyor. You can do it and resume work.

The digging conveyor device 7 is provided with a digging blade 9 in front of a digging conveyor 10, and is provided with a rotating unit 1 with respect to the body 2.
The digging blade 9 is freely rotatable about 0a, and the digging depth by the digging blade 9 and the transport angle of the digging conveyor 10 can be freely adjusted. When the digging conveyor device 7 is not in use, the tip side portion of the digging conveyor device is folded and stored on the machine side, and when not in use, the digging blade 9 and the digging conveyor 10 are stored in a retracted state. The length is shortened, and transport by a transport vehicle or the like is easily performed. Also, it does not take up space when storing in a warehouse or the like.

[0025]

[Effect of the Invention] As described above, according to the step support structure for an agricultural product harvester of the present invention, the step for the worker is
Since the rotation posture is held by the toggle action of the spring device at the time of rotation, and a plurality of holding portions are provided in the spring device,
At the time of rotation of the step, the rotation posture is held in a plurality of stages by the toggle action of the spring device, and can be held between the use state and the storage state. Therefore, it is not necessary to rotate the steps to the stowed state when the aircraft turns headland. In addition, it is easy to switch between the use state, intermediate state, and storage state.
When rotated to the stowed state, it is securely held at that position, and it is safe without being inadvertently used.

[Brief description of the drawings]

FIG. 1 is a plan view of an entire potato harvester according to an embodiment of the present invention.

FIG. 2 is a side view of the whole potato harvester.

FIG. 3 is a front view of the same.

FIG. 4 is a schematic plan view of the transmission.

FIG. 5 is an explanatory perspective view of a steering operation unit.

FIG. 6 is a plan view of the entire potato harvester showing another embodiment of the handle portion.

FIG. 7 is a side view of the whole potato harvester, showing a folded state of the excavating conveyor device.

FIG. 8 is a side view of an operator step.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Potato harvester 2 Aircraft body 3 Crawler 4 Engine part (engine, generator, hydraulic motor) 4
Reference Signs List a Fuel tank 4b Belt transmission system 5 Steering unit 5a Steering unit step 6 Steering and working seat 7 Dig conveyor 8 Side frame (frame) 9 Digging blade 10 Dig conveyor 10a Rotating unit 11 Hydraulic cylinder 12 Bracket 13 Ridge follower 14 Wheel 15 Vertical adjustment mechanism 16 Slide mechanism 17 Auxiliary worker seat 18 Sorting conveyor device 19 Worker seat 20 Step 20a Support shaft 20b Fixing screw 21 Sorting work step 22 Clutch lever 23 Sieve wire 24 Packing board 25 Plate Spring 25a Locking pin 25b, 25c Engaging recess 26 Steering lever 27 Steering handle 27a Steering shaft 27b Operating gear 28 Transmission 29 Steering operation unit 30 Hydraulic continuously variable transmission (HST) 30a Output shaft 31 Transmission gear 32 Side clutch 3 a clutch operation arm
32b Clutch operating rod 33 Differential device 34 Crawler drive shaft 35 Brake device 35a Brake operating arm 3
5b Brake operation rod 36 Tight arm 37 Cam 38 Cam follower 39 Post mounting seat

Claims (1)

(57) [Scope of request for utility model registration] 1. A self-propelled agricultural product harvester, wherein a harvester for harvesting agricultural products vegetated in a field is provided with a worker step rotatable between a use state and a storage state. The step is a step support structure for an agricultural product harvester, characterized in that a rotation posture is held by a toggle action of a spring device during rotation, and a plurality of holding portions are provided in the spring device.