JP2006101783A - Granule supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a granule supply apparatus wherein the insides of delivery mechanisms can easily be maintained. <P>SOLUTION: This granule supply apparatus 5 formed so that granules are delivered by the actions of delivery mechanisms 18, is characterized by forming the delivery mechanisms 18 in states capable of being switched into work postures or maintenance postures for opening the insides on a lateral axis X1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a granular material supply apparatus configured to supply a granular material by an operation of a supply mechanism.

As the powder supply device as described above, there is a device mounted on the rear part of a work machine such as a rice transplanter, and as its configuration, a plurality of feeding mechanisms arranged in parallel in the left-right direction are fixed to the machine body. It is possible to divide the fixed part and the detachable part that can be detached from the fixed part, and allow the fertilizer tank connected to the upper part of these feeding mechanisms to be detached. There is one configured to be movable to a maintenance position (see, for example, Patent Document 1).
JP 2003-164207 A (paragraph numbers 0037 to 0038, FIGS. 5 to 7)

  According to the above configuration, when performing maintenance work such as removing particulate matter such as granular fertilizer adhering to the casing or feeding roll of each feeding mechanism, or replacing the feeding roll, the upper part of each feeding mechanism After moving the fertilizer tank located in the maintenance position, it is necessary to remove the detachment part of each feeding mechanism from the fixed part, and after the maintenance, after assembling the detaching part to the fixed part of each feeding mechanism It is necessary to return the fertilizer tank from the maintenance position to the upper part of each feeding mechanism.

  Moreover, since it is difficult to secure a place for temporarily placing the separation part on the work machine, it is necessary to transport the separation part between the place where the work machine is provided and the temporary placement position outside the machine. become.

  That is, considerable work is required for preparation work for performing maintenance on the inside of the feeding mechanism and assembly work after the maintenance.

  An object of the present invention is to facilitate maintenance of the inside of the feeding mechanism.

  As means for solving the above-mentioned problems, in the present invention, in the granular material supply apparatus configured to supply the granular material by the operation of the supplying mechanism, the operating mechanism and the inside thereof are opened in the supplying mechanism. In the maintenance posture, the posture can be switched around the left and right axis.

  According to this configuration, the inside of the feeding mechanism can be opened by simply switching the feeding mechanism from the working posture to the maintenance posture without the need to remove the whole or a part of the feeding mechanism. Maintenance such as cleaning work for removing powder particles adhering to the inside of the casing and the feeding roll and replacement of the feeding roll can be performed. Further, after the maintenance, the powder body can be drawn out only by switching the feeding mechanism from the maintenance posture to the working posture.

  Further, since it is not necessary to remove the feeding mechanism, it is not necessary to secure a place for temporarily placing it and to carry it.

  Therefore, it has excellent maintainability that can effectively reduce labor and labor required for maintenance of the inside of the feeding mechanism, such as cleaning work to remove the powder particles adhering to the inside of the casing and the feeding roll and replacement of the feeding roll. Can be.

  As one of means for making the present invention more suitable, the casing of the feeding mechanism has a two-divided structure that can be divided into an upper case portion and a lower case portion, and the posture to the maintenance posture. It is configured to be divided vertically according to the switching.

  According to this configuration, when the feeding mechanism is switched to the maintenance posture, the inside of the feeding mechanism can be greatly opened as the upper case portion and the lower case portion of the casing are separated from each other vertically. For example, it becomes easier to perform maintenance such as cleaning work for removing powder particles adhered to the inside of the casing or the feeding roll, and replacement of the feeding roll.

  Therefore, it becomes possible to improve the maintainability of the inside of the feeding mechanism, such as a cleaning operation for removing powder particles adhered to the inside of the casing and the feeding roll, and replacement of the feeding roll.

  As one of means for making the present invention more suitable, the upper case portion and the lower case portion are connected to each other through a connecting shaft facing left and right so as to be openable and swayable. As the posture is changed, the upper case portion and the lower case portion are configured to open / close and swing with the connecting shaft as a fulcrum.

  According to this configuration, since the upper case portion and the lower case portion are connected by the connecting shaft, the stability in the state where the upper case portion and the lower case portion are opened is improved, the maintenance of the inside of the feeding mechanism is facilitated, and the feeding mechanism It becomes easy to connect the upper case portion and the lower case portion when switching from the maintenance posture to the working posture.

  Therefore, it is possible to improve the maintainability of the inside of the feeding mechanism and the operability when the feeding mechanism is switched from the maintenance posture to the working posture.

  As one of means for making the present invention more suitable, as the posture switching of the feeding mechanism to the maintenance posture is performed, the connecting shaft moves in the same direction as the posture switching direction of the feeding mechanism. The position of the axial center and the position of the connecting shaft are made different so as to be displaced around the center.

  By the way, when the upper case portion and the lower case portion are connected by the connecting shaft as described above, the posture in a state in which the upper case portion and the lower case portion are opened is stabilized, and the maintainability with respect to the inside of the feeding mechanism and the feeding mechanism from the maintenance posture. While the operability when switching to the working posture is improved, the open area when the feeding mechanism is switched to the maintenance posture may be narrowed depending on the positional relationship with the horizontal axis that is the posture switching fulcrum of the feeding mechanism. is there.

  Also, when such a powder supply device is mounted on a work machine, the inside of the feeding mechanism is set by setting the swinging direction when switching the feeding mechanism to the maintenance posture to the direction away from the traveling machine body. Although the distance for opening is earned, since the work implement is equipped with many other things such as the driver's seat, maintenance for the inside of the feeding mechanism is only possible in the open area obtained by the swing. It may be insufficient to do.

  Therefore, along with the posture switching to the maintenance posture of the feeding mechanism, the connecting shaft of the upper case portion and the lower case portion is displaced around the axial center in the left-right direction in the same direction as the posture switching direction. This makes it possible to earn a greater distance for opening the interior of the machine, so that even if it is mounted on a work machine equipped with many other things such as a driver's seat, Since it can be opened more greatly, it becomes easier to perform maintenance on the inside.

  Accordingly, the upper case portion and the lower case portion are connected to each other by a connecting shaft so as to be openable and swingable, and the inside of the feeding mechanism is greatly opened while improving the stability in the opened state. It can be made easier to maintain than it can.

  As one of means for making the present invention more suitable, the feeding mechanism is configured to feed the powder and granular material by rotation of a feeding roll provided in the casing, and the casing A dividing line dividing vertically is configured to pass through the rotational axis position of the feeding roll.

  According to this configuration, when the feeding mechanism is switched to the maintenance posture, the casing is divided into the upper case portion and the lower case portion by a dividing line passing through the rotational axis position of the feeding roll, and the feeding roll is moved to the lower case portion. It will be in the state where it was received and supported, and the feeding roll can be easily removed from the casing.

  Therefore, it becomes easier to perform maintenance such as a cleaning operation for removing powder particles adhering to the feeding roll and replacement of the feeding roll.

  As one of means for making the present invention more suitable, the feeding mechanism is automatically set in a state in which the granular material can be fed out in accordance with the posture switching from the maintenance posture to the working posture. It is configured to return.

  According to this configuration, after the posture switching from the maintenance posture of the feeding mechanism to the working posture, for example, a dedicated fixing operation such as fixing the feeding mechanism in the maintenance posture or fixing the openable / closable casing in the closed state is performed. Even if it does not carry out, it can be made the state which can advance a granular material only by performing the attitude | position switching operation which switches a feeding mechanism to a working position.

  Therefore, the operability can be further improved when the feeding mechanism is switched from the maintenance posture to the working posture.

  As one of means for making the present invention more suitable, the feeding mechanism is configured to be switched to the maintenance posture by a backward displacement around the axis.

  In recent years, work machines such as rice transplanters and direct sowing machines that have a working device such as a seedling planting device or a sowing machine connected to the rear of the traveling machine via a link mechanism have been improved in stability. While planning, in order to enable the supply of fertilizer and chemicals linked to planting and sowing, it is considered to equip the rear part of the traveling aircraft with a powder body supply device, but in this configuration, Since the working device is provided behind the powder supply unit, it is extremely difficult to perform work on the powder supply device from the rear of the machine body.

  Therefore, the feeding mechanism is configured to switch to the maintenance posture by the backward displacement about the left and right axis, and in the maintenance posture, the inside is opened to the front side and the work is performed on the front side. This makes it easy to secure the space, so that maintenance of the inside of the feeding mechanism can be easily performed from the front side, that is, the traveling machine body side.

  Therefore, it is possible to suitably improve the maintainability of the mid-mount working machine equipped with the powder and particle supply device mounted on the rear part of the traveling machine body.

  As one of means for making the present invention more suitable, when the posture of the feeding mechanism is changed from the working posture to the maintenance posture, the shaft center is rotated in a direction exceeding the maintenance posture of the feeding mechanism. A first restricting member for restricting displacement at a position, and restricting displacement about the axis in a direction exceeding the work posture of the feeding mechanism when the posture of the feeding mechanism is switched from the maintenance posture to the working posture. A second regulating member is provided.

  According to this configuration, the feeding mechanism is arranged around the maintenance posture, for example, the driver's seat provided around the delivery mechanism due to the posture changing beyond the working posture and further forward. And the possibility of interference with other objects such as work devices can be avoided.

  Further, if the second restricting member is effectively used at the time of assembling the feeding mechanism, it becomes easier to assemble the feeding mechanism in the working posture.

  Therefore, damage to the feeding mechanism and other objects caused by the feeding mechanism interfering with other objects when the posture is switched can be avoided, and the assembly of the feeding mechanism can be improved.

  As one of means for making the present invention more suitable, a holding member for holding the feeding mechanism in the maintenance posture is provided.

  According to this configuration, since the feeding mechanism can be held in the maintenance posture by the holding member, when the feeding mechanism is switched to the maintenance posture, for example, while holding the feeding mechanism in the maintenance posture with one hand, the casing with the other hand It does not impose an unreasonable work such as removing powder particles adhering to the inside or the feeding roll.

  Therefore, it is possible to further improve the maintainability of the inside of the feeding mechanism.

  FIG. 1 shows an overall side view of a riding type rice transplanter, which is an example of a working machine. This rice transplanter is connected to a rear portion of a traveling machine body 1 via a link mechanism 3 that moves up and down by the operation of a hydraulic cylinder 2. The seedling planting device 4 is connected so as to be capable of being driven up and down, and is equipped with a fertilizer application device 5 which is an example of the powder and granular material supply device 5.

  The traveling machine body 1 transmits the power from the engine 6 mounted on the front thereof to the left and right front wheels 9 and the rear wheels 10 via the hydrostatic continuously variable transmission 7 and the gear transmission 8. The driving type is configured to be a riding type in which a boarding operation unit 13 including a steering wheel 11 and a driving seat 12 that steer the left and right front wheels 9 is formed at the front and rear centers thereof.

  The seedling planting device 4 is a working power transmitted from the gear-type transmission 8 transmitted to the power distribution mechanism 14, and a seedling mounting table 15 on which eight mat matted seedlings are placed is reciprocated with a constant stroke in the left-right direction. The rotary-type planting mechanism 16 that is driven and arranged side by side in the left-right direction cuts out a predetermined amount of seedlings from the lower end of the seedling mount 15 and plantes them on the mud that has been leveled by a plurality of leveling floats 17. Each mat-like seedling is vertically driven toward the lower end of the seedling mounting base 15 every time the seedling mounting base 15 reaches the left and right stroke ends, so that up to eight seedlings can be planted. It is configured for 8-row planting.

  As shown in FIGS. 1 to 7, the fertilizer 5 is a rear-wheel drive power output from the gear-type transmission 8, and the feeding mechanism 18 arranged in the left-right direction is stored in the fertilizer tank 19. The granular fertilizer that is driven by a predetermined amount of granular fertilizer, which is an example of a granular material, is transported by the electric blower 20, and the granular fertilizer fed by each feeding mechanism 18 is used as a corresponding ground discharge unit 21. It is comprised for 8-row fertilization which can perform fertilization of a maximum of 8 strips by conveying to each of the grooving devices 21 and supplying them from the respective grooving devices 21 into the field mud.

  The fertilizer tank 19 includes four hoppers 22 that store two pieces of granular fertilizer in the left-right direction, and includes a single lid 23 that opens and closes a fertilizer supply port formed at each upper end thereof. ing. At the lower end of each hopper 22, a fertilizer outlet is formed and a corresponding one of the four feeding mechanisms 18 is connected.

  Each feeding mechanism 18 includes a total of four feeding rolls 25 in a set of two in which a plurality of fertilizer feeding recesses 25a are aligned and formed in the casing 24 connected to the lower end of each hopper 22. Fertilizer feed amount by changing the open area of each feed roll 25 with respect to the fertilizer outlet of the fertilizer tank 19 in parallel with the drive shaft 26 supported by the casing 24 in the left-right orientation and rotating together. And a left-hand feeding roll 25 is driven to rotate by transmitting a rear-wheel drive power to the drive shaft 26 via a fertilizer transmission mechanism 28. By being done, it is comprised so that a maximum of 2 pieces of granular fertilizer can be paid out.

  The fertilizer transmission mechanism 28 is a power take-out portion 31 provided on a transmission shaft 30 that is transmitted from the gear type transmission 8 to the rear axle case 29, and after taking out a part of the power for driving the rear wheels for fertilization, the rod 32 And the left end portion of the drive shaft 26 protruding from the casing 24 of each feeding mechanism 18 from the transmission shaft 34 via the corresponding auxiliary clutch 35. Is transmitted to a drive gear 37 that meshes with a driven gear 36 that is integrally formed therewith. Between the rod 32 and the swing arm 33, a fertilizer application amount adjustment unit 38 that enables adjustment of the fertilizer feed amount by adjusting the swing angle of the swing arm 33 by changing the connecting position of the rod 32 and the swing arm 33. In addition, a power conversion unit 39 for converting the swinging motion of the swinging arm 33 into a rotational motion is provided between the swinging arm 33 and the transmission shaft 34.

  The casing 24 is configured in a two-part structure that can be divided into an upper case portion 24A and a lower case portion 24B, and the upper case portion 24A and the lower case portion 24B are located behind the drive shaft 26 and the transmission shaft. 34 is connected by a connecting shaft 24C arranged and positioned so as to be positioned below 34 so that an opening / closing swinging operation using the connecting shaft 24C as a fulcrum is possible, and a hook-like fixing provided in the lower case portion 24B. The tool 24D can be fixedly held in the closed state.

  The support position of the drive shaft 26 with respect to the casing 24 is set so that the dividing line dividing the upper case portion 24A and the lower case portion 24B passes through the axial center position of the drive shaft 26, and the upper case portion 24A. In association with the opening operation between the lower case portion 24B and the lower case portion 24B, the drive gear 37 externally fitted to the transmission shaft 34 supported by the upper case portion 24A is integrated with the drive shaft 26 received and supported by the lower case portion 24B. The meshing with the driven gear 36 is released away from the formed driven gear 36, so that when the casing 24 is opened, the feeding roll 25 is easily removed from the casing 24 together with the drive shaft 26 and the like. Can do.

  The lower case portion 24B is formed in a bifurcated shape that guides the respective granular fertilizers fed out by the left and right feeding rolls 25 to the left and right, and cylindrical conveying portions 24E set in the front-rear direction at the left and right lower ends. Are integrally formed.

  The transport unit 24E has a front end connected to the blower 20 via the blower tube 40, and a rear end connected to the corresponding groove forming device 21 via a transport tube 41 made of a resin-made flexible tube or the like. . The blower 20 is disposed below the driver seat 12 so as to be positioned at the center of the left and right sides of the traveling machine body 1, and an intake pipe 42 that extends air heated by the engine 6 and the like from the intake port toward the engine 1. Is used for conveying wind, and the adhesion of granular fertilizer to the conveying tube 41 and the groove producing device 21 due to moisture or the like is suppressed. Each grooving device 21 is supported by the corresponding leveling float 17 adjacent to the corresponding planting mechanism 16 so as to supply the granular fertilizer to a portion near the lateral side of the seedling planted by the planting mechanism 16. Equipped.

  Each feeding mechanism 18 is supported together with the fertilizer tank 19 on a support frame 43 provided at the rear end of the traveling machine body 1. The support frame 43 has a movable frame portion 43B, to which each feeding mechanism 18 and the fertilizer tank 19 are connected, to a fixed frame portion 43A erected at the rear end portion of the traveling machine body 1, rather than the connecting shaft 24C for opening and closing the casing. It is configured so as to be able to swing up and down around its axis X1 via a left and right support shaft 43C arranged and set above the rear, and the free end of the movable frame portion 43B is driven A pair of left and right receiving members 44 erected at a predetermined distance from the fixed frame portion 43A in the airframe 1 are received and supported via an elastic body 45, and each of the left and right receiving members 44 and the movable frame portion 43B are supported. The buckle-type fixtures 46 provided over the free ends of the two can be fixed and held in a state of being received and supported by the left and right receiving members 44.

  The left receiving member 44 has a receiving posture in which the movable frame portion 43B is received and held at a predetermined position swung upward from a receiving position by the receiving member 44, and a retracted posture in which the holding is released and retracted. A hook-shaped holding member 47 capable of swinging operation and a resin holder 48 for holding the holding member 47 in the retracted position by elastic engagement of the holding member 47 swinged in the retracted position are provided. It has been.

  From the above configuration, the fixing and holding of the upper case portion 24A and the lower case portion 24B by the fixture 24D provided in the casing 24 of each feeding mechanism 18 is released, and the transport pipe 41 is transferred from the casing 24 of each feeding mechanism 18. In a state in which the movable frame portion 43B is fixedly held at the receiving position by the fixing tool 46, the movable frame portion 43B is moved upward from the receiving position by the receiving member 44 around the left and right axis X1. When it is swung toward each other, each feeding mechanism 18 tilts together with the fertilization tank 19 toward the rear around the left and right axis X1, and with the tilt, the lower end portion is connected to the blower pipe 40. As the connecting shaft 24C of the casing 24 in which the movement of the casing 24 is restricted rises around the axis X1 in the left-right direction, the upper case portion 24A and the lower case portion 24B are connected to each other. 24C in the fulcrum, in a state that relative swinging away from each other, comprising the interior so as to increase the opening on the body front side. And in this open state, if the holding member 47 is switched to the receiving posture to receive and hold the movable frame portion 43B, the cleaning operation or the feeding roll for removing the granular fertilizer adhering to the inside of the casing 24 or the feeding roll 25. Maintenance such as replacement of 25 can be easily performed from the traveling machine body side where the seedling planting device 4 does not get in the way.

  Further, after the maintenance, when the holding holding of the movable frame portion 43B by the holding member 47 is released, the movable frame portion 43B is lowered and swung to the receiving position by the receiving member 44 around the left and right axis X1. Each feeding mechanism 18 rises forward together with the fertilization tank 19 around its left-right axis X1 and, along with the standing, movement of the lower end is restricted by connection with the blower pipe 40. When the connecting shaft 24C of the casing 24 is lowered about the left and right axis X1, the upper case portion 24A and the lower case portion 24B are relatively swung in the direction approaching each other with the connecting shaft 24C as a fulcrum. As a result, the large open space is closed on the front side of the aircraft. Then, in this closed state, the upper case portion 24A and the lower case portion 24B of each feeding mechanism 18 are fixed by a fixture 24D, and the transfer pipe 41 is connected to each transfer portion 24E of the lower case portion 24B. If the movable frame portion 43B is fixed at the receiving position by the receiving member 44 with the fixing tool 46, the granular fertilizer stored in each hopper 22 of the fertilization tank 19 can be fed by each feeding mechanism 18.

  In other words, by operating the movable frame portion 43B around the left and right axis X1, each feeding mechanism 18 is erected together with the fertilizer tank 19 so that the powder particles stored in the fertilizer tank 19 can be fed. Each feeding mechanism 18 is provided with a fertilizing tank so that maintenance work such as a working posture in which each casing 24 is closed, cleaning work for removing granular fertilizer attached to the inside of the casing 24 and the feeding roll 25, and replacement of the feeding roll 25 is possible. 19 and the maintenance posture in which each casing 24 is opened by being tilted rearward, and the holding member 47 is provided only on the left receiving member 44, so that the operator can move the movable frame portion 43B left and right with the left hand. The holding member 47 can be swung with the right hand while operating around the direction of the center axis X1, and each feeding mechanism 18 can be maintained. Easy maintenance by one person without the need for an auxiliary worker to maintain the posture in the maintenance posture while switching to the posture and switch the posture to the working posture while releasing the posture holding in the maintenance posture of each feeding mechanism 18. Yes.

  Note that a gripping portion 43a is formed at the center of the left and right of the movable frame portion 43B so as to facilitate the posture switching operation.

  As shown in FIG. 5, the connecting portion between the fixed frame portion 43A and the movable frame portion 43B has a first contact portion 49a provided in the fixed frame portion 43A and a first contact portion provided in the movable frame portion 43B. 49b, the first restricting member 49 configured to restrict the upward swing around the axis X1 of the movable frame portion 43B and the second contact with the fixed frame portion 43A. A second restriction configured to restrict the downward swing around the axis X1 of the movable frame portion 43B from the contact portion 50a and the second contact portion 50b provided in the movable frame portion 43B. The member 50 is provided, and these regulating members 49, 50 cause the feeding mechanisms 18 to tilt further backward beyond the maintenance posture, or when the left and right receiving members 44 are not attached to the fuselage. At the time of maintenance with the left and right receiving members 44 removed from the machine body, the fertilizer tank 19, the feeding mechanism 18, etc. are attached to the driver's seat 12 and the seedling stage 15 due to the tilting of the feeding mechanism 18 beyond the working posture. The fertilizer can be used in a state in which the left and right receiving members 44 are not attached to the machine body, and the possibility of interference with surrounding parts such as, the possibility of damage due to excessive load applied to the transport unit 24E and the air duct 40, etc. 5 can be improved.

  As shown in FIGS. 1 to 4, 6, 8, and 9, the blower pipe 40 is made of resin, the first blower pipe 40 </ b> A connected to the blower 20, and the conveying wind guided by the first blower pipe 40 </ b> A. The second blower pipe 40B provided with a branching section 40a that distributes the left and right, and the left and right third blower pipes 40C that guide the conveying air distributed to the left and right by the second blower pipe 40B. To a blower path extending from the conveying section 24E of each feeding mechanism 18 to each other.

  40 A of 1st ventilation pipes are made of hard resin which curves toward the 2nd ventilation pipe 40B from the air blower 20, and the opening of the lower end is connected to the exhaust port of the air blower 20 so that attachment or detachment is possible via the rubber boot 40D. And the opening of the upper end is connected to the opening of the lower end in the 2nd ventilation pipe 40B so that attachment or detachment is possible via the 1st connection pipe 40E.

  The second blower pipe 40B is made of a hard resin formed in a substantially Y shape that facilitates and smoothly distributes the conveying air in the left-right direction, and each opening at the left and right ends corresponds to the corresponding third blower pipe 40C. Is detachably connected to the opening formed at one end via the second connecting pipe 40F.

  Each of the left and right third blower tubes 40C is made of a hard resin in which a small-diameter connection portion 40b to which the corresponding conveyance portion 24E is connected, and the corresponding conveyance portion 24E is made of rubber. It is inserted and connected through the bush 40G.

  The first connecting pipe 40E is composed of a rubber elastic body formed in an accordion shape, and is formed between the first blower pipe 40A and the second blower pipe 40B that are generated when the posture of each feeding mechanism 18 is switched. Absorbs changes in drooping and tube length with its elastic deformation.

  The second connecting pipe 40F is elastically deformed including a first interchangeable portion 40c that is bent and formed with a plurality of protrusions a spaced apart in the circumferential direction, and a second interchangeable portion 40d that is formed in a bellows shape. It is composed of a rubber elastic body capable of twisting between the second blower pipe 40B and the third blower pipe 40C that occurs when the posture of each feeding mechanism 18 is switched by elastic deformation of the first interchangeable portion 40c. Absorbs and absorbs the change in the tube length due to the torsional deformation of the first interchangeable portion 40c by the elastic deformation of the second interchangeable portion 40d, resulting in the torsion occurring between the second blower tube 40B and the third blower tube 40C. The resulting collapse of the first interchangeable portion 40c is prevented by a plurality of protrusions a.

  In other words, each of the first connecting pipe 40E and the left and right second connecting pipes 40F is configured to function as an interchangeable portion A that allows the posture switching of each feeding mechanism 18 to be performed. The posture switching operation can be easily performed without requiring the trouble of releasing the connection between each feeding mechanism 18 and the blower pipe 40. Moreover, when washing the fertilizer tank 19 and each feeding mechanism 18 etc. with water, for example, the water containing the fertilizer is removed by releasing the connection between the left and right third blower pipes 40C and the second connection pipes 40F. Rust of the blower 20 due to flowing into the blower 20 through the blower pipe 40 can be prevented.

  A resin fixing band or the like is employed at each connection location of the blower tube 40 for connection retention.

  As shown in FIGS. 1 to 4, 6, and 10, the upper case portion 24 </ b> A of each casing 24 has a discharge port 24 a that enables discharge of the granular fertilizer remaining in each hopper 22, and the discharge port 24 a A swinging valve body 24b that enables manual opening and closing operation is provided, and a discharge pipe 51 made of a resin-made flexible pipe or the like is connected to the discharge port 24a via a connector 52 provided at one end thereof. Are detachably connected.

  Each connector 52 has a joint portion 52A fitted and joined to the discharge port 24a, and a pair of locking members 52B equipped to be swingable back and forth about a substantially vertical axis X2 on the left and right sides of the connector 52A. By locking to the flange 24c formed in the periphery, it is possible to easily press-fit to the discharge port 24a of each casing 24, and by releasing the locking by the locking tool 52B, the discharge of each casing 24 can be performed. It can be easily removed from the outlet 24a.

  That is, when each feeding mechanism 18 is switched to the maintenance posture, the discharge pipes 51 need to be removed in advance, and each discharging port 24a that needs to be performed after each feeding mechanism 18 is switched to the working posture. The discharge pipe 51 can be easily attached to the head.

  As shown in FIGS. 3, 11, and 12, the left and right transport parts 24 </ b> E of each feeding mechanism 18 can be attached and detached via a single connector 53 provided at one end of a corresponding pair of transport pipes 41. It is connected.

  Each connector 53 is a pair of left and right connecting portions 53A that are externally fitted and joined to the left and right transport portions 24E, and a planar view gate supported by these connecting portions 53A so as to be able to swing back and forth around a first axial center X3 facing left and right. Shaped operation arm 53B and a locking arm 53C in a plan view that is supported by the operation arm 53B so as to be able to swing relative to the second axial center X4 facing left and right. A pair of left and right locking recesses 53a that can be locked to locking protrusions 24e that protrude from the flanges 24d of the left and right transport portions 24E are formed at the ends, and the connection portions 53A are connected to the corresponding transport pipes 41A. And the locking arm 53C is swung around the second axial center X4 facing left and right so that the left and right locking recesses 53a are positioned in front of the corresponding locking protrusions 24e. The operation arm 53B is By swinging backward about the one axis X3 and locking the left and right locking recesses 53a to the corresponding locking protrusions 24e, the left and right transport parts 24E can be easily crimped. In addition, it is possible to hold the crimp by exceeding the dead point of the second axis X4. Further, in this state, the operation arm 53B is swung forward around the first axial center X3 facing left and right to release the locking between the left and right locking recesses 53a and the locking protrusions 24e. The left and right transport sections 24E can be easily removed.

  In other words, the conveyance pipes 41 need to be removed from the respective conveyance units 24E that need to be performed in advance when the respective feeding mechanisms 18 are switched to the maintenance posture, and the respective conveyance units 24E that need to be performed after the respective feeding mechanisms 18 are switched to the working posture. It is possible to easily attach the transfer pipe 41 to the pipe.

  In addition, since the operation arm 53B swings back and forth around the first axial center X3 facing left and right, the connection state and the connection release state of the connector 53 can be switched, so that the switching operation can be performed. Further, it is possible to avoid a decrease in operability due to the hindrance of the transfer pipe 41 and the like arranged side by side.

[Another embodiment]
Hereinafter, other embodiments of the present invention will be listed.

[1] The working machine may be a direct sowing machine or an agricultural tractor.

[2] The granular material supply device 5 may be configured such that powdered fertilizer or powdered medicine is fed by the operation of the feeding mechanism 18, and the granular material fed by the feeding mechanism 18 It may be configured such that the body falls by its own weight and is supplied to the field.

[3] As the granular material supply device 5, for supply of four strips capable of supplying a maximum of four granular materials, for supply of five strips capable of supplying a maximum of five granular materials, maximum of six granular particles For example, it may be configured to supply 6 strips that can supply the body, or to supply 10 strips that can supply a maximum of 10 powder particles.

[4] The granular material supply device 5 may be a device provided at the rear part of the seedling planting device 4. In this case, if the posture in which the feeding mechanism 18 is tilted forward is set as the maintenance posture, and the inside of the feeding mechanism 18 is largely opened to the rear side of the machine body in the maintenance posture, the inside of the casing 24 and the feeding state can be obtained. Maintenance such as cleaning work for removing the granular fertilizer adhering to the roll 25 and replacement of the feeding roll 25 can be easily performed from the rear side of the seedling planting device 4.

[5] As the granular material supply device 5, the blower 20 is arranged on one side of the left and right sides of the machine body, and the supply and distribution of the conveying air from the blower 20 to each feeding mechanism 18 is performed via the right and left blower pipes 40. It may be configured to do so.

[6] The ground discharging unit 21 may be configured to spray the powder particles fed by the feeding mechanism 18 from a position away from the ground.

[7] A fixing tool 24D that fixes the upper case portion 24A and the lower case portion 24B in a closed state by engaging with the other one of the upper case portion 24A and the lower case portion 24B in the casing 24. The fixing mechanism 24D is equipped with a releasing posture for releasing the fixing, and the fixing of the upper case portion 24A and the lower case portion 24B is released by the elastic deformation of the fixing tool 24D. The posture switching from the working posture around the axis X1 to the maintenance posture is allowed, and the fixture 24D is changed along with the posture switching from the maintenance posture around the axial center X1 of the feeding mechanism 18 to the working posture. The upper case portion 24A and the lower case portion 24B are fixed in a closed state, and the feeding mechanism 18 is automatically set in a state in which the powder particles can be fed by the operation. It may be configured to return.

  In this configuration, the lower case portion 24 </ b> B of the feeding mechanism 18 is configured to be received and supported from below by a fixed portion such as the rear portion of the traveling machine body 1 or the fixed frame portion 43 </ b> A of the support frame 43. The fixing of the upper case portion 24A and the lower case portion 24B with the fixture 24D in a closed state, which is performed in conjunction with the posture change from the maintenance posture around the left and right axis X1 to the working posture, is more reliably performed. You may be able to do it.

[8] Maintenance of the feeding mechanism 18 from the working posture around the left and right axis X1 without connecting the upper case portion 24A and the lower case portion 24B of the casing 24 by the right and left connecting shaft 24C. As the posture is switched to the posture, the casing 24 may be configured to be completely separated vertically into the upper case portion 24A and the lower case portion 24B.

[9] The position of the left and right axis X that switches the attitude of the feeding mechanism 18 and the position of the axis on the left and right connecting shaft 24C that connects the upper case part 24A and the lower case part 24B so as to be openable and swingable. And the upper case portion 24A and the lower case portion 24B swing open and close around the left and right axis X as the posture of the feeding mechanism 18 is changed around the left and right axis X. You may comprise as follows.

  In this configuration, the upper case portion 24A swings around the axis X in the left-right direction with respect to the lower case portion 24B as the posture of the feeding mechanism 18 around the axis X in the left-right direction is switched. If it comprises, it can avoid that the twist and the change of a pipe length generate | occur | produce in the ventilation pipe 40 with the attitude | position switching of the feeding mechanism 18, and the installation of the interchangeable part A in the ventilation pipe 40 can be made unnecessary.

[10] You may comprise so that the position of the dividing line which divides the casing 24 up and down and the position of the rotating shaft center of the delivery roll 25 may be displaced up and down.

[11] A holding member 47 for holding the feeding mechanism 18 in a maintenance posture is provided on both the left and right receiving members 44 so that the posture can be switched between a receiving posture and a retracted posture, thereby holding the feeding mechanism 18 in the maintenance posture. The holding mechanism 47 may be configured to be more stable, and a single holding member 47 may be provided at the center of the left and right to hold the feeding mechanism 18 in the maintenance posture while maintaining the single holding member 47 with high stability. You may be able to do it.

Overall side view of the riding type rice transplanter Longitudinal front view of the main part showing the configuration of the fertilizer application equipment Side view of essential parts showing the state where the feeding mechanism is switched to the working posture Side view of the main part showing the state where the feeding mechanism is switched to the maintenance posture Longitudinal side view of main part and vertical front view of main part showing support structure of feeding mechanism Longitudinal side view of the main part showing the configuration of the feeding mechanism Longitudinal front view of the main part showing the configuration of the feeding mechanism Longitudinal front view showing the configuration of the main part of the air duct Longitudinal side view of second connecting pipe as an example of interchangeable part Cross-sectional plan view of the main part showing the configuration of the connector for the discharge pipe Side view of the main part showing the configuration of the connector for the transport pipe Longitudinal front view of the main part showing the configuration of the connector for the transport pipe

Explanation of symbols

18 Feeding mechanism 24 Casing 24A Upper case part 24B Lower case part 24C Connecting shaft 25 Feeding roll 47 Holding member 49 First regulating member 50 Second regulating member X1 Axis center

Claims (9)

It is a powder supply device configured to feed the powder by the operation of the feeding mechanism,
A granular material supply apparatus in which the feeding mechanism is configured to be switchable between a work posture and a maintenance posture that opens the inside thereof around a laterally oriented axis.   The casing of the feeding mechanism has a two-divided structure that can be divided into an upper case portion and a lower case portion, and is configured to be vertically divided when the posture is switched to the maintenance posture. 1. The granular material supply apparatus according to 1.   The upper case portion and the lower case portion are connected to each other via a connecting shaft facing left and right so as to be openable and swayable, and when the posture of the feeding mechanism is changed, the upper shaft case is used as a fulcrum. The granular material supply apparatus according to claim 2, wherein the part and the lower case part are configured to swing open and close.   The position of the shaft center and the connecting shaft are arranged so that the connecting shaft is displaced about the axis in the same direction as the posture switching direction of the feeding mechanism in accordance with the posture switching of the feeding mechanism to the maintenance posture. The powder and granular material supply apparatus according to claim 3, wherein the position of the powder is different. The feeding mechanism is configured to feed the granular material by rotation of a feeding roll provided inside the casing,
The granular material supply apparatus according to any one of claims 2 to 4, wherein a parting line that divides the casing up and down passes through a rotational axis position of the feeding roll.   6. The feeding mechanism according to claim 1, wherein the feeding mechanism is configured to automatically return to a state in which the granular material can be fed in accordance with a posture switching from the maintenance posture to the working posture. The granular material supply apparatus as described in one.   The granular material supply apparatus according to any one of claims 1 to 6, wherein the feeding mechanism is configured to switch to the maintenance posture by a backward displacement around the axis.   A first restricting member for restricting displacement of the feeding mechanism around the axis in a direction exceeding the maintenance posture when the posture of the feeding mechanism is switched from the working posture to the maintenance posture; 8. The second restricting member for restricting displacement of the feeding mechanism around the axis in a direction exceeding the working posture when the posture is switched from the maintenance posture to the working posture. The granular material supply apparatus as described in any one.   The granular material supply apparatus according to any one of claims 1 to 8, wherein a holding member that holds the feeding mechanism in the maintenance posture is provided.

Images