JP2021052616A - Harvester - Google Patents

Abstract

To provide a harvester capable of reducing operations by making transport speed of crops and travel speed of a vehicle body in linkage with, for solving a problem in which, when the transport speed of crops and travel speed of the vehicle body are individually operated, operations increase.SOLUTION: A rhizome crop harvester A comprises: an operation part 41 comprising an operation tool 42 which causes a transport clutch to select a neutral state for moving forward or backward a travel part or stopping supply of rotary power, for transmitting or not for transmitting the rotary power by a speed change part, thereby moving a vehicle body A to front/rear side, or not moving the vehicle body A; and a clutch actuation part having an actuator for disconnecting the transport clutch by an operation of the operation part. In the rhizome crop harvester A, when the operation tool 42 is at a neutral and backward movement position, the transport clutch is disconnected by the clutch actuation part for stopping transmission to the transport part 21, and when the operation part 42 is at a forward movement position, the clutch is connected by the clutch actuation part for transmission to the transport part 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a harvester. Specifically, it relates to a rhizome crop harvester.

As a harvester for harvesting crops planted in ridges, a harvester for rhizome crops described in Patent Document 1 is known. This harvester is provided with a self-propelled vehicle body, a cockpit, an operation device, a harvester for rhizome crops, and a rider's riding part.
The self-propelled vehicle body is self-propelled by the crawler traveling device, and travels by the operation of the operator sitting in the cockpit. Further, the operator can harvest the crops while the vehicle body is self-propelled by operating the operating device to operate the harvesting device.

Japanese Unexamined Patent Publication No. 2009-22224

In the rhizome crop harvester described in Patent Document 1, since the harvesting device is operated while the vehicle body is self-propelled, the operator needs to operate the self-propelled operation and the harvesting device operation at the same time. Therefore, there is a problem that it is difficult for the operator to properly operate the rhizome crop harvester to harvest crops unless the operator is trained in handling the harvester. In addition, as the number of agricultural workers decreases, the absolute number of highly trained operators is decreasing, so even operators who are not good at handling harvesters are required to have work machines that are easy to handle. There is also.
The present invention has been made with an eye on the above problems, and an object of the present invention is to provide a harvester capable of easily harvesting crops by reducing the burden on the operator in operating the machine.

Further, when reversing the conveyor belt, the transmission device for driving the conveyor belt, or the like, the parts related to the transmission must be arranged and configured so as to be reversible. For example, if a tensioner is arranged on the loosening side of a belt driven belt, it is necessary to reverse the arrangement for forward rotation and reverse rotation. In this way, when the conveyor belt, the transmission device for driving the conveyor belt, and the like are reversed, the structure becomes complicated, and as a result, the manufacturing cost increases.

This invention
A traveling unit having traveling devices on both sides in the traveling direction of the vehicle body,
A transport unit that transports crops and
It has a gear case provided with a clutch that transmits forward or reverse rotational power to the traveling device, transmits rotational power to the transport unit, and can interrupt these rotational powers, and advances, reverses, or rotational power of the traveling unit. A transmission unit that can be selected to be neutral with the vehicle in a disengaged state and can move the vehicle body back and forth or not by transmitting or not transmitting rotational power.
By letting the clutch select the forward or reverse of the traveling part or the neutral state in which the rotational power is cut off, the rotational power is transmitted or not transmitted by the transmission part, so that the vehicle body is moved back and forth or is not moved. An operation unit that provides an operation tool to perform operations for
A clutch operating unit having an actuator that engages and disengages the clutch by operating the operating unit,
With
When the operating tool is in the neutral and reverse positions, the clutch actuating part disengages the transmission to the transport section, and when the operating tool is in the forward position, the clutch actuating section clutches the transmission to the transport section. To connect,
Harvesting machine, which is characterized by
Consists of.

The present invention further
The transport section transports the crop to the rear side.
Harvester,
Consists of.

The present invention further
The operation unit senses the forward or neutral or reverse movement of the vehicle body by contacting the operation tool when the operation tool is in the neutral and reverse positions and separating the operation tool when the operation tool is in the forward position. Switch and
Harvester with more
Consists of.

The present invention further
The operation unit can select to operate the transport unit by engaging and disengaging the clutch according to the operation of the operating tool, or to keep the clutch in the disengaged state and not drive the transport unit without responding to the operation of the operating tool. Harvest switch and
Harvester with more
Consists of.

The present invention further
The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
Even after the running part has finished running, the bulb transport conveyor continues to be driven.
Harvester,
Consists of.

The present invention further
The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
Even after the transfer of the pull-out conveyor or the leaf-removal conveyor is completed, the bulb transfer conveyor continues to be driven.
Harvester,
Consists of.

The present invention further
The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
The speed of the bulb transport conveyor can be adjusted relative to the speed of the pull-out conveyor or the leaf-removal conveyor.
Harvester,
Consists of.

The present invention has been made with an eye on the above problems, and when the transport speed of the crop and the traveling speed of the vehicle body are operated separately, the number of operations increases, whereas the transport speed of the crop and the traveling speed of the vehicle body are increased. By linking the operations with, the number of operations is reduced.
Furthermore, even after the vehicle body has finished running, the transport conveyor is moved to improve the efficiency of transporting crops.

It is a top view of the harvester which concerns on embodiment of this invention. It is a front view of the harvester which concerns on embodiment of this invention. It is a partial cross-sectional front view of the transport clutch operating part of the harvester which concerns on embodiment of this invention. It is a partial cross-sectional plan view of the transport clutch operating part of the harvester which concerns on embodiment of this invention. It is a side view seen from the rear side of the transmission part of the harvester which concerns on embodiment of this invention. It is a top view of the operation part of the harvester which concerns on embodiment of this invention. It is a side view which made into the enlarged cross section of the operation tool and the switch part of the operation part of the harvester which concerns on embodiment of this invention. It is an operation flow chart of the harvester which concerns on embodiment of this invention.

A is a harvester and an airframe. In the embodiment of the present invention, the harvester A is a rhizome crop harvester.
Reference numeral 11 denotes a traveling unit. The traveling unit 11 has traveling devices 12 so as to be located on both sides of the vehicle body, which is the harvester A, in the traveling direction.
Reference numeral 21 is a transport unit. In this embodiment, the transport unit 21 includes a pull-out conveyor 22 and a leaf-removal conveyor 23. The transport unit 21 may be only the pull-out conveyor belt 21. As shown in FIG. 2, the transport unit 21 is installed on the traveling unit 11 diagonally upward and backward. The transport unit 21 transports the crops on the ridges to the rear side.

Reference numeral 22 denotes a pull-out conveyor, that is, a pull-out conveyor belt. The drawing conveyor 22 is installed so as to be higher toward the rear, and root vegetables such as garlic, which are crops, are pulled out from the field.
Reference numeral 23 denotes a leaf-removing conveyor, that is, a leaf-removing conveyor belt. The leaf-removing conveyor 23 is provided so as to be continuous with the drawing conveyor 22 and so as to be higher toward the rear on the extension of the drawing conveyor 22. The drawing conveyor 22 conveys the cut leaf stems of root vegetables.
The leaf stem portion and the bulb portion of the root vegetables are cut between the drawing conveyor 22 or the drawing conveyor 22 and the leaf discharging conveyor 23. The cut leaf stem portion is conveyed diagonally backward by the leaf-removing conveyor 23. The bulbs of root vegetables are dropped downward.

Reference numeral 24 denotes a bulb transport conveyor, that is, a bulb transport conveyor belt.
The bulb transport conveyor 24 comprises a pull-out conveyor 22 or a transport conveyor that transports the cut bulbs of root vegetables rearward between the pull-out conveyor 22 and the leaf-removing conveyor 23.
The bulb conveyor 24 rotates and drives a drive roller arranged at the start end or the end by a motor (not shown). The power source of the motor is hydraulic or electric. In the embodiment, it is a motor powered by hydraulic pressure, and is installed at the end of the bulb conveyor 24. The motor can be driven independently of the drawing conveyor 22 and the leaf discharging conveyor 23. Further, the rotation speed of the motor can be adjusted by a speed controller (not shown), and the transfer speed of the bulb transfer conveyor can be set to any speed desired by the operator. In the embodiment, the speed controller is a throttle valve that adjusts the flow rate of the flood pressure generated by the hydraulic pump (not shown).
The bulb transport conveyor 24 is provided at the rear of the pull-out conveyor 22 and the leaf-removal conveyor 22, which are the transport sections 21, so as to be higher toward the rear. The lower part of the front portion of the bulb transport conveyor 24 is positioned at the drop position of the cut bulb portion. A box for storing the bulb portion (not shown) is installed at the lower part of the highest position of the bulb transport conveyor 24.

The transport unit 21 is installed on the traveling unit 11 diagonally upward and rearward to transport the crops on the ridges to the rear side. Therefore, it has the following effects.
The sharing speed of the belt of the transport unit 21 parallel to the horizontal direction of the ground (ridge) is the same as the traveling speed of the machine body A. When viewed on a crop basis, the crop is pulled out as if it were moving in the vertical direction of the ridge, so it can be pulled out without imposing a burden on the crop. In this respect as well, since the operation of adjusting the transport speed is not required as described above, the driver does not have to worry about adjusting the transport unit 21.

25, which is illustrated in FIGS. 1 and 2, is a soyra. The soira 25 is attached to the front part of the airframe A. The soyra 25 is swayed by a swaying mechanism having a drive belt for swaying the soyra 25, thereby penetrating into the soil of the field and advancing, cracking or crushing the field.

Reference numeral 31 (illustrated in FIGS. 3 to 5) is a transmission unit. The transmission unit 31 transmits forward, neutral, or reverse rotational power to the traveling device 12. At the same time, the transmission unit 31 transmits rotational power to the transport unit 21. Further, the transmission unit 31 has a gear case 36 provided with a clutch capable of interrupting these rotational powers.
Reference numeral 35 denotes a drive shaft provided in the transmission unit 31. The driving force is transmitted to the traveling unit 11 by the driving shaft 35.

The transmission unit 31 is provided with a clutch for interrupting and interrupting the input rotational power. The clutch includes a transport clutch 32 and a traveling clutch (not shown).
33 is a sprocket, 34 is a sprocket rotation shaft, and 37 is a chain. Each is installed close to the gear case 36. The sprocket 33 transmits power to the transport unit 21 including the pulling conveyor 22 and the leaf discharging conveyor 23 via the chain 37.

As shown in FIGS. 4 and 5, the transport clutch 32 connects and disconnects the sprocket rotation shaft 34 and the sprocket 33.
The traveling clutch (not shown) transmits the driving force to the traveling unit 11 having the traveling device 12 so as to be located on both sides in the traveling direction of the harvester A, and the traveling device is inside the gear case 36 provided in the transmission unit 31. The transmission to the traveling unit 11 having the above is intermittently traveled, stopped, and turned.

The transmission unit 31 can select the forward or reverse movement of the traveling unit 11 or the neutral state in which the rotational power is cut off, and the vehicle body is moved or not moved back and forth by transmitting or not transmitting the rotational power. It is possible.
The transmission unit 31 includes a gear case 36 provided with a clutch inside, and a hydrostatic continuously variable transmission (HST) 81 that transmits rotational power to the gear case 36.
82 shown in FIGS. 3 and 4 is a swash plate operating lever. The swash plate operating lever 82 is connected to the operating tool 42 by a cable 43 as shown in FIG.

Since the power of the transport unit 21 is taken out from the gear case 36 which is the speed change unit 31 that shifts the power to the traveling device 12, the rotation of the traveling device 12 and the rotation of the transport unit 21 are synchronized.
When the clutch is connected, the vehicle speed and the belt of the transport unit 21 are always synchronized, so that the transport speed is inevitably synchronized with the vehicle speed. Therefore, it is not necessary to individually adjust the belt rotation speed of the transport unit 21, so that the burden on the driver's operation of the machine A can be reduced.

The operation unit will be described with reference to FIGS. 1 and 7.
41 is an operation unit. 42 is an operation tool. The operating tool 42 includes a lever and is provided on the operating unit 41.
The operating tool 42 is connected to a lever for adjusting the swash plate angle of the hydrostatic continuously variable transmission (HST) 81 via a cable 43. The operating tool 42 uses the hydrostatic continuously variable transmission (HST) 81 to switch forward and backward and adjust the vehicle speed. Reference numeral 44 denotes a rotation axis. The rotating shaft 44 is a rotating shaft of the operating tool 42. With this configuration, the rotation speed transmitted from the hydrostatic continuously variable transmission (HST) 81 to the gear case 36 can be adjusted regardless of the rotation of the engine.

In order to move the vehicle body back and forth by the traveling device 12, the operating tool 42 causes the rotating clutch to select forward or backward of the traveling unit 11 or neutral with the rotational power cut off.
As a result, the operating tool 42 performs an operation for moving the vehicle body back and forth or not moving the vehicle body by transmitting or not transmitting the rotational power by the transmission unit 31.
With the operating tool 42, it is possible to simultaneously adjust the vehicle speed for moving forward and backward and operate the clutch of the transport unit 21 only by operating the operating tool 42 for moving the machine body A forward and backward.
Since the clutch operation of the transport unit 21 is not required when the aircraft A is stopped and when the vehicle is moving backward, the driver can concentrate on advancing the aircraft A.

Connected by a cable 43 corresponding to the operation of the state 42A in which the operating tool 42 is tilted to the forward side, the state 42B in which the operating tool 42 is tilted to the backward side, and the neutral state 46C of the operating tool 42, which are shown in FIG. As shown in FIG. 3, the swash plate operating lever 82 takes three states: a forward swash plate operating lever 82A, a reverse swash plate operating lever 82B, and a neutral swash plate operating lever 82C.
As shown in FIG. 3, the swash plate operation lever 82 corresponds to the three states of the forward side swash plate operation lever 82A, the reverse side swash plate operation lever 82B, and the neutral side swash plate operation lever 82C. The speed transmission (HST) 81 is made to take three states of forward side, reverse side, and neutral side.

Reference numeral 45 illustrated in FIG. 7 is a switch. 47 is a pin. The pin 47 is projected from the switch plate 46 formed at the fulcrum portion of the rotating shaft 44 of the operating tool 42. The pin 47 rotates together with the switch plate 46 by the rotation of the operating tool 42, and by contacting or pressing the sensing plate 451 protruding from the switch 45, the contact or non-contact in the electric circuit of the switch 45 is detected. To do.
In the operation unit 41, the pin 47 comes into contact with the sensing plate 451 of the switch 45 when the operating tool 42 is in the neutral and reverse positions, and the pin 47 is the sensing plate of the switch 45 when the operating tool 42 is in the forward position. By separating from 451 it senses the forward or neutral or reverse movement of the vehicle body.

As shown in FIG. 7, the connecting portion between the cable 43 and the operating tool 42 is brought close to the pin 47 that operates the switch 45. Simplification and forward / backward mechanical movement can be reliably detected. The connecting portion and the pin 47 that operates the switch 45 may be arranged coaxially.
The switch 45 arranged in the vicinity of the operating tool 42 can accurately detect the operating intention of the operator and prevent foreign matter such as mud and impurities generated in the lower part of the machine A during work.
As shown in FIG. 7, the switch 45 is operated when the sensing plate 451 of the switch 45 touches or presses the pin 47 standing upright from the switch plate 46 of the operating tool 42. The sensing plate 451 of the switch 45 is pressed during the period from neutral to reverse. 42A represents a state in which the operating tool 42 is tilted to the forward side, 42B represents a state in which the operating tool 42 is tilted to the backward side, and 42C represents a neutral state. In the illustrated embodiment, in the state 451A in which the sensor plate 451 of the switch 45 is not pressed when moving forward, the electric circuit is connected to the ON state, and the sensing plate 451 of the switch 45 which is neutral and moving backward is pressed. In the state 451B, the electric circuit is cut off.

Corresponding to the state 42A tilted to the forward side of the operating tool 42, the state 42B tilted to the backward side of the operating tool 42, and the neutral state 42C of the operating tool 42, the tip of the switch plate 46 has a rotating shaft 44 as a rotating shaft. Rotate.
Therefore, the sensing plate 451 of the switch 45 does not touch the pin 47 in the state 42A when the operating tool 42 is tilted to the forward side. However, in the state 42B in which the operating tool 42 is tilted backward and the neutral state 42C in the operating tool 42, the sensing plate 451 of the switch 45 touches the pin 47.

As shown in FIG. 7, when the operating tool 42 is in the neutral 42C to backward 42B position, the switch 45 is pushed to pull out the circuit and disengage the transport clutch 32. At the same time, the swash plate operating lever 82 connected to the operating tool 42 by the cable 43 is operated to bring the traveling device 12 into a neutral state in which the driving is stopped, or to reversely drive the traveling device 12 to the reverse side.
When the operating tool 42 takes the positions of the neutral 42C and the reverse 42B, the clutch is disengaged by the clutch operating unit 51 to transmit the transmission to the transport unit 21, and when the operating tool 42 is in the forward 42A position, the transmission to the transport unit 21 is performed. The clutch is connected by the clutch operating portion 51. That is, when the traveling device 12 is in the stopped state or the reverse state, the transport clutch 32 is in the disconnected state, and the transport unit 21 is not driven. Further, when the traveling device 12 is in the forward state, the transport clutch 32 can be connected to drive the transport unit 21.

Reference numeral 51 illustrated in FIG. 3 is a clutch operating unit. The clutch operating unit 51 will be described. The clutch operating unit 51 includes two traveling clutch operating units 52A and a second traveling clutch operating unit 52B (details are not shown), and one transport clutch operating unit 53. Consists of.
The first traveling clutch operating unit 52A and the second traveling clutch operating unit 52B transmit driving forces to the left and right traveling devices 12, respectively. The transport clutch operating unit 53 transmits a driving force to the transport unit 21.
The clutch operating portion 51 includes an actuator 511, a rocking body 512, a sliding member 62, a first rod 61, a second rod 71, and a first elastic body 63.
The clutch operating unit 51 is located in the vicinity of the transmission unit 31 and intermittently operates each clutch of the transport clutch 32 and the traveling clutch.

The actuator 511 is composed of a motor. The actuator 511 serves as a drive source for the clutch operating unit 51 and drives the clutch. The clutch is engaged and disengaged by the operation of the actuator 511 by the operation of the operation unit 41.
The actuator 511 is separately provided in the first traveling clutch operating unit 52A, the second traveling clutch operating unit 52B, and the transport clutch operating unit 53, respectively.

As shown in FIG. 3, the rocking body 512 is formed of a plate-shaped body, is formed of a substantially rectangular shape composed of a long side and a short side, and is provided with a rocking body rotating shaft 517 biased toward the short side at one end. The rocking body 512 is provided by the actuator 511 so as to be rotatable and swingable with the rocking body rotating shaft 517 as the rotation center.
A gear 513 is provided along the short side of the rocking body 512 away from the rocking body rotating shaft 517. A pinion gear 511a is attached to the actuator 511. The gear 513 meshes with the pinion gear 511a.

Reference numerals 514a and 514b shown in FIG. 3 are limit switches. The limit switch 514a is a limit switch on the connection side. The limit switch 514b is a limit switch on the cutting side.
The limit switch 514a and the limit switch 514b are installed on both sides of the swinging body 512 swing range at the short side end away from the swinging body rotating shaft 517 provided with the gear 513 of the swinging body 512. The limit switch 514 detects the swinging position by contacting the contact piece 515 provided at the end of the swinging body 512 by the swinging of the swinging body 512.

The rocking body 512 swings in the axial direction of the sliding member 62 composed of the first rod 61 and the tubular member. The end of the rocking body 512 operates in close proximity to the speed change unit 31 to reduce and stretch the first elastic body 63. The rocking body 512 has an action of pushing the first elastic body 63 in the direction of the clutch (the transfer clutch 32 and each clutch of the traveling clutch) or weakening the pushing.

The sliding member 62 is made of a tubular member. The sliding member 62 rotates by having a rocking body rotating shaft 517, which is a rotating shaft of the rocking body 512, and a sliding member rotating shaft 65 parallel to the rocking body rotating shaft 517, at the end of the rocking body 512. Provide freely.
The sliding member 62 has an inner diameter axis oriented in a direction intersecting the rocking body rotating shaft 517, in this embodiment, in a direction orthogonal to each other. The sliding member 62 is moved by the rocking body 512 in a direction closer to the clutch and in a direction away from the clutch with the rocking body rotating shaft 517 as the center of rotation.

The first rod 61 is attached to the inner diameter of the sliding member 62 made of a tubular member. The clutch is operated by being arranged so as to be interlockable with the sliding member 62 so that the sliding member 62 can slide in the direction closer to the clutch and in the direction away from the clutch.
Reference numeral 66 denotes a direction changing member. The first rod 61 is attached to one end of the rotatably provided direction changing member 66. 67 is a washer. The washer 67 suppresses the stretching of the elastic body 63.
The second rod 71 is attached to the other end of the direction changing member 66. The second rod 71 operates each clutch of the clutch. The second rod 71 is composed of a shift fork.

The first elastic body 63 is attached to the first rod 61 and urges the sliding member 62 made of the tubular member in a direction away from the clutch. On the other end side of the first elastic body 63 in which one end side is in contact with the sliding member 62, the length of the sliding member 62 when extended is regulated by a nut.
The first elastic body 63 does not directly disengage the clutch by the operation of the actuator 511, but the first elastic body 63 is reduced by the operation of the actuator 511 to increase the repulsive force, and the repulsive force is a load required when the clutch is disengaged. The clutch can be disengaged by the repulsive force of the first elastic body 63.

The regulating member 64 has a tubular shape and is provided so as to cover the outer periphery of the first elastic body 63. The regulating member 64 regulates the compression length of the first elastic body 63.
By arranging the clutch operating unit 51 outside the transmission unit 31, the clutch operating unit 51 can be easily removed. Therefore, depending on the specifications of the harvester A, it is possible to freely select between the electric clutch operating unit 51 as in the present application and the manual type that is manually operated by connecting with a link mechanism, a cable 43, or the like. ..

Since the tooth surface of the gear 513 meshes with the pinion gear 511a to operate the rocking body 512, power can be reliably transmitted to the first rod 61. In addition, this gear transmission makes it possible to boost the force while maintaining compactness.
Since the first elastic body 63 is arranged on one end side of the rocking body 512 and connected to the first rod 61, the first elastic body 63 is connected to the first rod 61 even if the clutch becomes immobile due to a high load during the clutch disengagement operation. You can earn a certain amount of time until it shrinks. As a result, the actuator 511 does not suddenly stop or maintain the stopped state immediately after starting.

When the actuator 511 is driven and the first elastic body 63 contracts, the repulsive force is relatively amplified. The clutch can be disengaged when the repulsive force overcomes the load required when disengaging the clutch. Further, since the actuator 511 maintains the operating state even when the first elastic body 63 contracts, it is possible to prevent an excessive electric power from entering due to a sudden stop or the like. Therefore, the actuator 511 made of a motor can be protected from an electric load due to a sudden increase in electric power.
Instead of directly disengaging the clutch by the operation of the actuator 511, the first elastic body 63 is reduced by the operation of the actuator 511 to increase the repulsive force, and when the repulsive force overcomes the load required when the clutch is disengaged, the first elastic body The clutch can be disengaged with the repulsive force of 63.

Since the actuator 511 does not suddenly stop from the operating state or maintain the stopped state immediately after the start by the first elastic body 63, an excessive power rushes into the actuator 511 instantly or maintains an energized state of the excessive power. You can prevent it from happening.
As a result, the actuator 511 can be protected only by a mechanical configuration without using an electric circuit, and control software and the like can be omitted.

The sliding member 62 made of a tubular member attached to the rocking body 512 can slide the first rod 61 stably in the axial direction by inserting the first rod 61 into the inner diameter portion, and the sliding member 62 can be slid from the actuator 511. Power can be reliably transmitted to the clutch.
By using the second rod 71 and the direction changing member 66, which are shift forks, the actuator 511 and the rocking body 512 can be arranged in any direction in the vicinity of the transmission unit 31, so that the space in the vicinity of the transmission unit 31 can be freely laid out. And other equipment can be arranged efficiently. Therefore, the entire harvester A can be stored compactly.

By changing the length of the regulating member 64, the timing at which the first elastic body 63 during the operation of the actuator 511 operates the first rod 61 can be changed. It is possible to adjust the time (stroke) for generating the repulsive force of only the first elastic body 63, and the clutch operation method can be arbitrarily changed / adjusted from the slow state to the sensitive state. Further, by tightening or rotating the nut on the other end side of the first elastic body 63 in the tightening or loosening direction, the length of the first elastic body 63 when extended can be adjusted, so that the clutch operation method can be further changed. Can be adjusted.
The clutch (conveyor clutch 32, traveling clutch) is operated via the actuator (electric motor) 511, and the operating force of the operating tool 42 is the force for operating the hydrostatic continuously variable transmission 81 that is directly connected. Only is enough. Therefore, the operating force can be reduced.

The operation unit 41 will be described with reference to FIG.
Reference numeral 91 illustrated in FIG. 6 is a bulb transfer conveyor drive switch. The bulb transfer conveyor drive switch 91 is an operation switch for the bulb transfer conveyor 24. The bulb transfer conveyor 24 is driven hydraulically, and the operator (operator) controls the drive by arbitrarily switching the hydraulic valve operation switch.

Reference numeral 92 illustrated in FIG. 6 is a soyra swing switch. The soira oscillating switch 92 is a switch for switching the power of the soira 25 to the oscillating mechanism. By activating the belt tension provided on the drive belt for oscillating the soyra 25, tension is applied to the drive belt and transmission is performed.
Reference numeral 93 illustrated in FIG. 6 is a cross switch. The cross switch 93 operates the harvester A to the left and right.
To steer left and right of the harvester A, when the cross switch 93 is tilted to the left in FIG. 6, the harvester A turns to the left. When the cross switch 93 is tilted to the right, the harvester A turns to the right. In the turning operation, the first traveling clutch operating unit 52A and the second traveling clutch operating unit 52B operate the dog clutch (not shown) in the gear case 36 to interrupt the transmission to the traveling devices arranged on the left and right. Do it with.
The drawing conveyor 22 is also interlocked with the raising and lowering operation of the soyra 25, which is an operation on the upper and lower sides of the harvester A. When the cross switch 93 is tilted downward in FIG. 6, it rises, and when it is tilted upward in FIG. 6, it descends.

Reference numeral 94 illustrated in FIG. 6 is a main switch. It is the main switch for starting the engine and for the entire equipment.
Reference numeral 95 illustrated in FIG. 6 is a harvest switch. The harvest switch 95 is an operation switch of the drawing conveyor 22. When the harvest switch 95 is ON, the transport unit 21 is driven only when the harvester A advances. Further, when the harvester A is stopped or retracted, the driving of the transport unit 21 is stopped. It is possible to automatically operate the transport clutch 32 via the transport clutch operating unit 53. When the harvest switch 95 is in the OFF state, the drive of the transport unit 21 is stopped regardless of whether the harvester A is forward, neutral, or backward. The harvest switch 95 has a built-in lamp and can be turned on or off. When the harvest switch 95 is ON, the lamp is lit, and when the harvest switch 95 is OFF, the lamp is extinguished, thereby informing the operator whether or not the transport clutch 32 is automatically activated.

The operation unit 41 operates the transfer unit 21 by interrupting the transfer clutch 32 in response to the operation of the front-rear rotation of the operation tool 42, or responds to the operation of the front-rear rotation of the operation tool 42 by operating the harvest switch 95. It is possible to select not to drive the transport unit 21 while maintaining the disengaged state of the clutch.
By switching the harvest switch 95 during the harvesting operation, it is possible to select whether to operate the clutch that switches the power transmission to the transport unit 21. By turning off the harvest switch 95 during simple movement other than during work, it is possible to determine that it is not during work and completely stop the operation of the transport unit 21.

Reference numeral 96 denotes an emergency stop switch. The emergency stop switch 96 is a switch that stops all devices when pressed in an emergency.
Reference numeral 97 denotes an engine throttle operating lever. The engine throttle operating lever 97 adjusts the rotation of the engine. The main speed adjustments of the transport speed of the drawing conveyor 22 and the forward / backward speed of the harvester A are adjusted.

Reference numeral 98 denotes an intermittent switching lever for the hydrostatic continuously variable transmission (HST) 81 input rotation. The intermittent switching lever 98 is a lever that operates the engagement and disengagement of the drive clutch of the HST drive belt (not shown).
The intermittent switching lever 98 switches the drive on / off to the drawing conveyor 22, the bulb cutting portion (not shown), and the traveling portion 11. The switching clutch (not shown) is installed on the V-belt on the input side of the hydrostatic continuously variable transmission (HST) 81. Intermittent switching is performed by adjusting the tension. The drive of each part is all linked by this clutch.

The traveling of the traveling unit 11, the pulling-out conveyor 22, the leaf-removing conveyor 23, and the driving of the bulb transport conveyor 24 will be described.
Even after the traveling unit 11 has finished traveling, that is, even after the drawing conveyor 22 and the leaf-removing conveyor 23 linked to the traveling of the traveling unit 11 have been transported, the bulb transport conveyor 24 continues to be driven. Therefore, it is difficult for the bulbs to collect under the bulb transport conveyor 24. The bulbs under the bulb transport conveyor 24 are placed in a box installed at the lower end of the rear upper end of the bulb transport conveyor 24.

The speed of the bulb transport conveyor 24 can be adjusted relative to the speed of the drawing conveyor 21 and the leaf discharging conveyor 22. The speed of the bulb transport conveyor 24 is adjusted according to the amount of crops transported by the drawing conveyor 22 and then temporarily stored in the bulb transport conveyor 24. By this adjustment, the bulbs are less likely to accumulate under the bulb transport conveyor 24, and the bulbs can be sequentially transferred to the box installed under the bulb transport conveyor 24.
That is, if the crops that have been pulled out and dropped from the end of the pull-out conveyor 22 do not spill from the side of the front end of the bulb transport conveyor 24, they can be temporarily stored at the front end of the bulb transport conveyor 24. ..
When many crops are planted in the field or the traveling speed is increased, the amount of crops to be pulled out increases, and inevitably, the number of bulbs sent to the lower part of the bulb transport conveyor 24 also increases. In this case, if the transfer speed of the bulb transfer conveyor 24 is increased by a speed controller (not shown), it is convenient because the bulbs are less likely to accumulate in the lower part of the bulb transfer conveyor 24. If the number of crops planted in the field is small or the traveling speed is slowed down, the number of bulbs sent to the lower part of the bulb transporting conveyor 24 is also small, so that the work can be sufficiently performed even if the carrying speed of the bulb transporting conveyor is slow.

The power from the engine is divided into a power system for the traveling device 12 and the transport unit 21 and a power system for the soyra 25 located at the front portion of the vehicle body and having the lower end portion swingable or vibrable. Therefore, the soyra 25 can operate independently of the operation of the operating tool 42 for adjusting the vehicle speed.
While keeping the vibration of the soyra 25 high, the speed can be adjusted according to the soil condition, such as adjusting the speed of the aircraft A. Also at this time, since the belt of the transport unit 21 has a transport speed corresponding to the speed of the machine A, the driver does not need to make adjustments related to the transport unit 21 and facilitates the operation of the machine A.

Since the transport unit 21 operates only when the machine A moves forward, even if the machine A is stopped in the middle of the crop pulling work (the state where the stem is sandwiched in front of the transport part), the position for pulling out the crop on the ridge is reached. , The position where the stalk of the crop is sandwiched by the belt of the transport unit 21 does not change. From this, it is possible to eliminate the burden on the crop that may occur due to the speed adjustment.

Even if the machine A is moved backward in a state where the pulled out crop remains in the middle of the transport unit 21, the transport unit 21 does not reverse and maintains the stopped state, so that the crop does not fall to the ground.
By switching the harvest switch 95 during the harvesting operation, it is possible to select whether to operate the clutch that switches the power transmission to the transport unit 21. By turning off the harvest switch 95 during simple movement other than during work, it is possible to determine that it is not during work and completely stop the operation of the transport unit 21.

An operation flow chart of the harvester according to the embodiment of the present invention will be described with reference to FIG. It is an operation flow diagram of the drawing conveyor 22, and is common with the operation flow diagram of the leaf-removing conveyor 23.
In S1, it is determined whether or not the harvest switch 95 is in the ON state.
When the harvest switch 95 is in the ON state, the lamp is turned on in S2.

Next, in S3, it is determined whether or not the switch 45 is in the ON state.
When the switch 45 is in the on state, S4 determines whether or not the connection side limit switch 514a is in the on state.
When the connection side limit switch 514a is in the ON state in S4, the drive of the actuator 511 is stopped in S7.

In S4, it is determined whether or not the connection side limit switch 514a is in the ON state, and when the connection side limit switch 514a is not in the ON state, in S5, the actuator 511 is connected to the clutch connection side, which is the connection side limit switch 514a side. To operate.
Next, in S6, it is determined whether or not the connection side limit switch 514a is in the ON state.
When the connection side limit switch 514a is in the ON state in S6, the drive of the actuator 511 is stopped in S7.

In S6, it is determined whether or not the connection side limit switch 514a is in the ON state, and when the connection side limit switch 514a is not in the ON state, in S5, the actuator 511 is connected to the clutch connection side on the connection side limit switch 514a side. To operate.
Then, in S6 again, it is determined whether or not the connection side limit switch 514a is in the ON state, and when the connection side limit switch 514a is in the ON state, the drive of the actuator 511 is stopped in S7.

In S1, it is determined whether or not the harvest switch 95 is in the ON state, and when the harvest switch 95 is not in the ON state, the lamp is turned off in S8.
Next, in S9, it is determined whether or not the cut-side limit switch 514b is in the ON state.
When the cut-side limit switch 514b is in the ON state in S9, the drive of the actuator 511 is stopped in S12.

When the disengagement side limit switch 514b is not in the ON state in S9, the actuator 511 is operated to the disengagement side limit switch 514b side which is the clutch disengagement side in S10.
Next, in S11, it is determined whether or not the cut-side limit switch 514b is in the ON state.
When the cut-side limit switch 514b is in the ON state in S11, the drive of the actuator 511 is stopped in S12.

In S11, it is determined whether or not the disconnection side limit switch 514b is in the ON state, and when the disconnection side limit switch 514b is not in the ON state, in S10, the actuator 511 is clutch-disengaged on the disconnection side limit switch 514b side. To operate.
Then, in S11 again, it is determined whether or not the cut-side limit switch 514b is in the ON state, and when the cut-side limit switch 514b is in the ON state, the drive of the actuator 511 is stopped in S12.

In S3, it is determined whether or not the switch 45 is in the on state, and when the switch 45 is in the off state, the above-mentioned S9 to S12 are controlled.
By repeating the control steps S1 to S12 described above, the transfer clutch 32 can be intermittently controlled via the actuator 511, and the transfer unit 21 can be automatically operated.

11 Traveling unit 12 Traveling device 21 Conveying unit 22 Extraction conveyor (conveying unit)
23 Leaf-removing conveyor (conveyor unit)
24 Bulb Conveyor 31 Transmission 32 Conveyor Clutch 36 Gear Case 41 Operation 42 Operator 51 Clutch Actuator 511 Actuator A Harvester

Claims (7)

A traveling unit having traveling devices on both sides in the traveling direction of the vehicle body,
A transport unit that transports crops and
It has a gear case provided with a clutch that transmits forward or reverse rotational power to the traveling device, transmits rotational power to the transport unit, and can interrupt these rotational powers, and advances, reverses, or rotational power of the traveling unit. A transmission unit that can be selected to be neutral with the vehicle in a disengaged state and can move the vehicle body back and forth or not by transmitting or not transmitting rotational power.
By letting the clutch select the forward or reverse of the traveling part or the neutral state in which the rotational power is cut off, the rotational power is transmitted or not transmitted by the transmission part, so that the vehicle body is moved back and forth or is not moved. An operation unit that provides an operation tool to perform operations for
A clutch operating unit having an actuator that engages and disengages the clutch by operating the operating unit,
With
When the operating tool is in the neutral and reverse positions, the clutch actuating part disengages the transmission to the transport section, and when the operating tool is in the forward position, the clutch actuating section clutches the transmission to the transport section. To connect,
A harvester that features that. The transport section transports the crop to the rear side.
The harvester according to claim 1. The operation unit senses the forward or neutral or reverse movement of the vehicle body by contacting the operation tool when the operation tool is in the neutral and reverse positions and separating the operation tool when the operation tool is in the forward position. Switch and
The harvester according to claim 1 or 2, further comprising. The operation unit can select to operate the transport unit by engaging and disengaging the clutch according to the operation of the operating tool, or to keep the clutch in the disengaged state and not drive the transport unit without responding to the operation of the operating tool. Harvest switch and
The harvester according to any one of claims 1 or 2 or 3, further comprising. The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
Even after the running part has finished running, the bulb transport conveyor continues to be driven.
The harvester according to any one of claims 2 or 3 or 4. The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
Even after the transfer of the pull-out conveyor or the leaf-removal conveyor is completed, the bulb transfer conveyor continues to be driven.
The harvester according to any one of claims 2 or 3, or 4 or 5. The crop consists of root vegetables, and the transport section consists of a pull-out conveyor for pulling out the root vegetables and a leaf-removing conveyor for transporting the cut leaves of the root vegetables.
A bulb transport conveyor for transporting the cut bulbs of root vegetables to the rear is provided at the rear of the pull-out conveyor and the leaf-removal conveyor.
The speed of the bulb transport conveyor can be adjusted relative to the speed of the pull-out conveyor or the leaf-removal conveyor.
The harvester according to any one of claims 2 or 3, or 4 or 5.

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