JP2001321655A - Grain agitating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain agitating device which is capable of well agitating grains for a long period by a rational improvement in its structure. SOLUTION: In the upper part of a storage space where the grains are stored, at least one supporting means existing on the upper side among the plural supporting means which are dispersedly arranged along the circumferential direction of the outer peripheral part of a shaft body 30 of a circular shape in its sectional shape directed in its longitudinal direction toward a horizontal posture and support a supporting frame 48 for supporting an agitating screw to agitate the grains toward the outer peripheral part of the shaft body 30 in a pendent posture are constituted to have roller bearings 60 which are supported on the supporting frame 48 side freely rotataby around the axial center intersecting with the longitudinal direction of the shaft body 30 and act to come into contact with the outer peripheral part of the shaft body 30. The device is provided with moving means which are disposed at the supporting frame 48 in the state of acting to come into contact with the outer peripheral part of the shaft body 30 freely movably along the longitudinal direction and also freely movably along the circumferential direction and drives the supporting frame 48 along the longitudinal direction of the shaft body 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a shaft body having a circular cross-sectional shape provided above a storage space in which grains are stored, with its longitudinal direction oriented in a horizontal posture or a substantially horizontal posture. A support frame is provided that supports a stirring screw that stirs the grain while rotating around the axis in a hanging posture,
A plurality of support means, which are distributed along the circumferential direction of the outer peripheral portion of the shaft and support the support frame with respect to the outer peripheral portion of the shaft, are movably movable along the longitudinal direction of the shaft. And a movement that is provided on the support frame so as to be movable along the circumferential direction of the shaft body and is in contact with an outer peripheral portion of the shaft body, and that drives the support frame along the longitudinal direction of the shaft body. The present invention relates to a grain stirring device provided with a means.

[0002]

2. Description of the Related Art In a grain stirring apparatus having the above-described structure, a sphere support structure has conventionally been used as a plurality of support means for supporting the support frame, as disclosed in Japanese Patent Application Laid-Open No. 9-12151. . In other words, the support frame is rotatably supported by a sphere made of a hard material, and the spherical surface of the sphere is brought into point contact with the outer peripheral surface of the shaft to support the support frame. In contrast, the supporting frame is configured to be supported in a state in which the supporting frame can move smoothly with little sliding resistance along the longitudinal direction and the circumferential direction of the shaft body.

[0003] In such a grain stirring apparatus, the grains stored in the storage space are agitated by a stirring screw supported in a hanging posture by a support frame. The stirrer screw can be moved while maintaining the stirring action while moving the support frame in the longitudinal direction of the shaft body by the moving means so that the stirring action can be exerted to various extents.
Moreover, the shaft is moved in a direction intersecting with the axial direction in order to widen the moving range of the stirring screw. By moving along the circumferential direction of the body, an excessive force is not applied to the support frame and the shaft body.

[0004]

However, in the above-mentioned conventional configuration, there is a possibility that the following inconveniences may occur, and an improvement has been desired. In other words, since the supporting means of the above configuration is configured to support the support frame by bringing the spherical surface of the sphere into point contact with the outer peripheral surface of the shaft, it slides along the longitudinal direction and the circumferential direction of the shaft. Although there is an advantage that smooth movement can be performed with little resistance, the structure supports the sphere so that it can freely rotate in a point contact state, so that structurally, the load resistance cannot be increased so much. If the load is increased, the structure becomes complicated and the cost increases. So, for example,
Although a plurality of such support means are arranged in parallel and the support load is dispersed and used, even with such a configuration, only one point actually contacts the shaft body. However, there was a disadvantage that the load capacity was not sufficient, and the product could be damaged by short-term use.

As a moving means for driving and moving the support frame along the longitudinal direction of the shaft, for example, in addition to the configuration described in the above-mentioned publication, the shaft is supported non-rotatably around its axis. There is also a configuration in which the support frame is reciprocated along the longitudinal direction of the shaft body in a state where the sphere is formed, but in such a configuration, the sphere is always located at the same position with respect to the outer peripheral surface of the shaft body. When the sliding movement is performed, the passage of the sphere on the outer peripheral surface of the shaft body may be worn due to long-term use, and a concave groove may be formed. Such a groove may be formed not only along the longitudinal direction of the shaft but also along the circumferential direction of the shaft. In particular, since the supporting means positioned on the upper side of the plurality of supporting means is configured to receive and support the entire load of the support frame, the stirring screw and the like so as to be movably supported, the concave groove as described above is used. Is likely to be formed.

As described above, when the groove is formed on the outer peripheral surface of the shaft, the sphere fits into the groove when the support frame needs to be moved to move the stirring screw. As a result, the operation of moving the support frame may be hindered, and the stirring screw may not be moved smoothly. As a result, the moving means is damaged by excessive force, or the unmovable area of the stirring screw is limited to a small range and the unmovable area is increased. There was a risk of becoming.

The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned conventional inconvenience by a rational structure improvement, and to increase the cost of the supporting means without increasing the cost. An object of the present invention is to provide a grain stirring device which can improve durability and can perform a good stirring process for a long period of time.

[0008]

According to the first aspect of the present invention, a shaft having a circular cross section is provided in an upper portion of a storage space in which grains are stored. A support frame is provided in a state facing the posture, and supports a stirring screw that stirs the grain while rotating about the vertical axis in a hanging posture, and is dispersedly arranged along a circumferential direction of an outer peripheral portion of the shaft. A plurality of support means for supporting the support frame with respect to the outer peripheral portion of the shaft body, movably along the longitudinal direction of the shaft body and movably along the circumferential direction of the shaft body, In the grain stirring device, provided in the support frame in a state of being in contact with an outer peripheral portion of the shaft, and a moving unit configured to drive and move the support frame along a longitudinal direction of the shaft, At least on the upper side of the support means That the support means, is supported rotatably on the support frame side around the axis which intersects the longitudinal direction of the shaft body, it is configured to include a roller bearing that contacts acts on the outer periphery of the shaft body.

A support means located on the upper side, which is movably supported while receiving and supporting the entire load, such as a support frame and a stirring screw, is rotatable around an axis perpendicular to the longitudinal direction of the shaft. And a roller bearing supported on the support frame side, and the support frame is supported in a state where the roller bearing is in contact with the outer peripheral portion of the shaft body. This roller bearing is designed to support the load not in a point contact state but in a line contact state because it has a structure that supports the load with a cylindrical body instead of a spherical body. Therefore, it is possible to make the configuration excellent in durability without increasing the cost. Moreover, since the cylindrical outer peripheral surface comes into contact with the outer peripheral surface of the shaft body in a direction intersecting the longitudinal direction of the shaft body, when the moving means is moved along the longitudinal direction of the shaft body by the moving means. In other words, the roller bearing moves smoothly while rolling around its axis, and does not protrude locally like a sphere, but contacts in a straight line. There is little possibility that grooves will be formed due to wear. In addition, even if a partial recess is already formed on the outer peripheral surface of the shaft body, the roller bearing comes into contact in a line contact state, so that the roller bearing fits into such a recess and moves. There is no disadvantage of being hindered.

Therefore, by the rational structural improvement of the support means, it is possible to improve the durability of the support means without increasing the cost, and it is possible to perform a good stirring treatment for a long time. It has become possible to provide a grain stirring device.

According to a second aspect of the present invention, in a state where the shaft is supported so as not to rotate around the axis thereof, the moving means cannot rotate the support frame around the axis. The reciprocating operation is performed over a set range along the longitudinal direction of the main shaft.

As a structure for moving the support frame in the longitudinal direction of the shaft body, for example, the support frame is longitudinally moved by helical movement of the support means using the rotational force of the shaft body while rotating the shaft body around its axis. Although it is conceivable to adopt a configuration in which the moving operation is performed in the direction, there is a possibility that a good moving operation cannot be performed due to idling between the shaft body and the support means. In comparison, in a state in which the shaft is non-rotatably supported around its axis, the support frame is reciprocated by a moving means over a set range along the longitudinal direction of the non-rotatable shaft. Therefore, the moving operation is reliably performed, and a suitable means for carrying out claim 1 is obtained.

According to the third aspect of the present invention, the support means other than the support means located on the upper side among the plurality of support means has a block-like shape having a sliding contact surface made of a lubricious material. Are provided.

It is conceivable that all of the plurality of support means are formed by roller bearings. However, in this case, complicated operations such as adjustment of the mounting posture of each of the plurality of roller bearings are required. By using a block-shaped sliding contact member having a sliding contact surface made of the above material, assembly can be performed relatively easily without such troublesome work.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a case where a grain stirring device according to the present invention is applied to a grain storage facility for storing grains will be described with reference to the drawings. As shown in FIG. 1, the grain storage facility receives a grain delivered from a producer, and receives a grain as a receiving unit that performs a receiving process of the received grain (such as weighing of the received grain and removal of foreign matter by grain sorting). Unit 1, a storage unit 2 that performs a drying process while storing the grains that have been received, and an adjusted shipping unit 3 that performs processes such as hulling adjustment processing and weighing for shipping of the grains from the storage unit 2; The apparatus is provided with a conveyor 4 and the like for transporting grains between them.

As shown in FIG. 2, the storage section 2 includes a storage bin 5 having a substantially cylindrical storage space for storing grains.
A drying device 6 for passing drying air through the storage bin 5, and the storage bin 5 has a grain input port 5 a at an upper portion thereof.
Is provided, a discharge port 5c is provided at the center of the floor surface 5b which is formed so as to be freely permeable, and an air guide path 5d is provided below the floor surface 5b. Below the grain inlet 5a,
An equalizer 7 for dispersing the introduced grains is provided, and a stirrer 8 for stirring and moving the stored grains in a vertical direction is provided in a storage space inside the storage bin 5. or,
On the upper side of the floor surface 5b, a discharge device 9 for collecting and discharging the grains to the discharge port 5c is provided, and a discharge conveyor 10 for receiving the grains flowing down from the discharge port 5c and discharging the same to the outside is provided. Have been.

The discharge device 9 is supported by a revolving electric motor M1 provided at the center of the floor 5b and revolving on the floor 5b with the center of the floor 5b as a revolving axis. One end is provided with a transverse feed screw 13 attached to the rotating shaft of the revolving electric motor M1, a rotating electric motor M2 for rotating the revolving electric motor M2, and the like. The revolving screw 13 is located at the center of the floor 5b. Floor 5 around the axis
The kernels revolve while revolving on b, and the grains left on the floor 5b are gathered at the outlet 5c.

The drying device 6 includes a burner 15 for generating drying air in a casing 14 and a storage bin 5 for storing drying air.
A blower 16 and the like for ventilating the storage bin 5 are provided, and the outside air is taken in from an outside air intake 17 formed in the casing 14, heated by the burner 15 (about 5 to 10 ° C.), and supplied to the storage bin 5 by ventilation. It is configured. The ventilation path is configured to be switched between a case where the storage bin 5 is supplied from above and a case where the storage bin 5 is supplied from below. In the drawing, D1 to D6 are ducts for path switching. In this way, while the grains are stored in the storage bin 5, the grains are dried by ventilation while being stirred by the stirrer 8.

In this grain processing facility, for example, a large amount of dust is generated on the floor surface 5b of the storage unit 2 as the grain is transported, thereby impeding the ventilation operation and the grain transport operation. As shown in FIG. 1, the floor 5b
A cleaning suction device 18 for performing regular or irregular cleaning is provided at a location near the operation room 19 of the facility, and the suction passage 20 connected to the cleaning suction device 18 This equipment is arranged along the floor 5b of the storage bin 5, and in this equipment, the grain stored in the storage bin 5 is used in order to effectively use the suction device 18 for cleaning to measure the moisture of the kernel. Is sampled at appropriate intervals. That is, the cleaning path 23 in which the cleaning connection port is formed and the sampling path 24 are branched and connected to the suction path 20, and the sample of the grain stored using the suction device 18 is stored. Operation room 1 by sucking grain
9.

Next, the structure of the stirring device 8 will be described. As shown in FIGS. 3 and 4, the stirrer 8 has a shaft 30 having a cylindrical cross-section at the upper part of the storage space of the storage bin 5 in which grains are stored. It is provided in a state, that is, a state where the center of the storage bin 5 is supported so as to revolve in parallel with the floor surface 5b as a vertical revolving axis Y1. Also, five stirring screws 32a, 3 for stirring the grain while rotating around the vertical axis.
2b, 32c, 32d and 32e are provided in a state of being supported by the shaft body 30 in a hanging posture, respectively.

The shaft 30 is rotatably suspended at the position of its revolving axis by a support member 33, and the other end of the shaft 30, that is, a radially outer end is provided on the shaft 30. The guide roller 34 is movably received and supported by a guide rail 35 provided along the inside of the peripheral wall of the storage bin 5. A revolving electric motor M3 with a speed reduction mechanism is provided at a radially outer portion of the shaft body 30. The guide roller 35 is rotated by the driving of the revolving electric motor M3, whereby the shaft body 30 is rotated. At a low speed (for example, 10 to 20 cm per minute)
).

The five stirring screws 32a to 32e
Agitating screw 32a located on the radially outermost side
Is provided in a state where the position along the longitudinal direction of the shaft body 30 is fixed, and the other four stirring screws 32b
32e are provided so as to be capable of reciprocating operation over a set range along the longitudinal direction of the shaft body 30. That is, the support units 36a to 36e that support the respective stirring screws 32a to 32e in the hanging posture are provided, and the support unit 36a located on the outermost side in the radial direction is fixed in position in the longitudinal direction of the shaft body 30. And the shaft 30
And is supported by the shaft body 30 so as to be movable along the circumferential direction. Then, the remaining four support units 36
Each of b to 36e is configured to be supported by the shaft 30 so as to be movable along the longitudinal direction of the shaft 30 and to be movable along the circumferential direction of the shaft 30. The support structure of each support unit will be described later.

The four stirring screws 32b
Support units 36b to 36e corresponding to .about.32e
Are arranged along the longitudinal direction of the shaft body 30 and are connected by a connecting member 37 at a set interval, and the four support units 36b to 36e are integrally formed while maintaining the set interval. A moving operation unit 38 is provided, which is configured to be movable along the longitudinal direction of the shaft body 30, and that performs a reciprocating operation over the set range. As shown in FIGS. 5 and 6, the moving operation unit 38 includes a traversing electric motor M4 having a speed reduction mechanism that can be driven in the forward and reverse directions in a casing 39 provided so as to cover the shaft 30 from above. Is provided, and the power of the electric motor M4 is rotated by a rotating chain 40 supported by a casing 39 so as to be rotatable around a longitudinal axis Y2.
The pulley 42 is provided so as to rotate integrally with the rotation shaft 41, and is configured to rotate the pulley 42 in the forward and reverse directions by the traversing electric motor M4. The casing 39 is configured to be supported by the shaft 30 so as to be movable along the longitudinal direction of the shaft 30 and to be movable along the circumferential direction of the shaft 30.
Note that the support structure of each of the support units 36b to 36b
This is the same as the support structure of FIG. 6e and will be described later in detail.

As shown in FIGS. 4 and 7, the pulley 42 is wound with a towing wire 45 stretched over the fixing brackets 43 and 44 at both ends of the shaft 30. . The pulling wire 45 is provided with a tension spring 46 in the middle thereof, and a winding force always acts on the pulley 42 by the pulling force of the tension spring 46. That is,
When the pulley 42 is rotationally driven by the traversing electric motor M4, the pulley 42 is guided to be wound around the towing wire 45, but since the towing wire 45 is fixed in its longitudinal direction, the pulley 42 moves. That is, the entire moving operation unit 38 moves along the longitudinal direction of the shaft 30. The moving operation unit 38 is connected to the connecting portion 37.
Are connected to the support units 36b to 36e, the four support units 36b to 36e and the moving operation unit 38 are integrally reciprocated. The cover 4 is located above the moving operation unit 38.
7 to prevent grain from entering the drive section. In the figure, RE is a rotary encoder for detecting the amount of traversing movement of the moving operation unit 38. When the four support units 36b to 36e, which move together with the movement operation unit 38, reach the end of the movement range, that is detected by the limit switch SW.
The rotation direction of the traversing electric motor M4 is changed. This lateral movement speed is low (for example,
(About 1 to 2 cm per minute).

Next, each of the support units 36a to 36e
The support structure for the shaft 30 will be described. Since the support configurations of the support units 36a to 36e are the same, only one support unit 36b will be described. 8 and 9
As shown in (1), the support unit 36b includes a casing 48 as a support frame that bends a plate body into a substantially U-shape to cover the shaft body 30 from above. The casing 48 has a flat upper surface 48a and side surfaces 48b, 48c extending downward from both sides of the upper surface 48a, and the side surfaces 48b, 48c on both sides are lower. The portions are bent so as to be inclined in a direction approaching each other, and furthermore, a horizontal support portion 48d is provided continuously at a lower end portion of one side surface 48b toward a laterally outward direction. The drive shaft 32a of the stirring screw 32 is rotatably supported around a vertical axis by bearings 49 and 50 attached to the upper surface 48a and the horizontal support portion 48d, respectively.

A slidable two-piece is provided at a position on the upper surface 48a opposite to the portion supporting the stirring screw 32.
An electric motor M5 for stirring is movably supported via a telescopic support mechanism 51 having a heavy cylinder structure.
Pulley 52 provided on the output shaft of
A transmission belt 54 is wound around a pulley 53 provided on the second drive shaft 32a. The telescopic support mechanism 51
The tension provided to the belt is provided by a spring provided in the belt. Therefore, the stirring screw 32 is driven to rotate by the stirring electric motor M5. The outer peripheral side of such a transmission mechanism has a cover 5.
It is configured to be covered with 5, so that grains do not enter.

A plurality of support means distributed along the outer peripheral portion of the shaft body 30 and supporting the support unit 36b with respect to the outer peripheral portion of the shaft body 30 are provided.
Movably along the longitudinal direction of the shaft body 30 and movably along the circumferential direction of the shaft body 30, provided in the casing 48 of the support unit 36 b in a state of contacting the outer peripheral portion of the shaft body 30, Of these, at least the support means located on the upper side is supported by the casing 48 so as to be rotatable around an axis which intersects the longitudinal direction of the shaft 30, and
Is provided with a roller bearing that acts on the outer peripheral portion of the roller.

That is, as shown in FIG. 10, the lower surface of the upper surface 48a of the casing 48 and the left and right side surfaces 48a
Support means are provided at three places at substantially equal intervals along the outer peripheral surface of the shaft body 30 on each of the inner surfaces of the inclined portions b and 48c, and the support means provided on each of the left and right side surfaces includes: A spherical support member 59 is provided, in which a spherical body 58 is rotatably supported by a holder 57 bolted to the inner side of the inclined posture portion of the left and right side surfaces 48b, 48c. It is configured to contact the outer peripheral surface. The support means located on the upper side is provided at appropriate intervals in the longitudinal direction of the shaft body 30 as shown in FIG. 11, and is provided around a horizontal axis center substantially orthogonal to the longitudinal direction of the shaft body 30. And a pair of roller bearings 60 rotatably supported by the upper surface 48a of the casing 48 and in contact with the outer peripheral portion of the shaft body 30. Therefore, the support unit that supports the stirring screw in the hanging posture is movably along the longitudinal direction of the shaft body 30 by the roller bearing 60 located on the upper side and the ball bearings 59 provided at two places on the left and right sides. The shaft 30 is supported by the shaft 30 so as to be movable in the circumferential direction.

The upper roller bearing 60, which mainly supports the loads of the stirring screw 33b, the electric motor M5, the support unit 36b, and the like, is provided around an axis perpendicular to the longitudinal direction of the shaft 30. Since the support unit comes into contact with the outer peripheral surface of the shaft body 30 in a line contact state, even if the support unit is moved along the longitudinal direction of the shaft body 30, only a part of the support unit slides and a concave groove is formed. Does not occur. In addition, when the shaft body 30 is moved in the longitudinal direction, the roller bearing 60 moves while rolling, so that the sliding contact portion is less likely to be worn out early.

As described above, each of the support units 36a
36e can move freely along the circumferential direction of the shaft 30. However, depending on the state of equilibrium between the load of the stirring screw 32b and the load of the stirring electric motor M5, the stirring screw 32b assumes a substantially downward posture. It is designed to maintain a stable posture. Then, the respective stirring screws 32b are rotationally driven by the stirring electric motor M5 while maintaining the downward posture, and perform the stirring processing of the grains. Then, by driving the electric motor for revolution M3, the shaft 30 revolves at a low speed, so that the stirring screws 32a to 32e revolve at a low speed. Moreover, the stirring screw 3 is driven by the traversing electric motor M4.
By reciprocating 2b to 32e at a low speed over the set range along the longitudinal direction of the shaft 30, the grains stored in the storage bin can be agitated in almost the entire area so that no unmixed area is generated. It is.

[Other Embodiments] Other embodiments will be listed below.

(1) In the above embodiment, as the plurality of support means, the support means located on the upper side is constituted by a roller bearing, and the other support means is constituted by a ball bearing. Not limited to such a configuration, the following (a)
The present invention may be implemented in various forms as described in (d) to (d). (A) All the support means other than the support means located on the upper side are constituted by roller bearings. (B) Of the support means other than the support means located on the upper side, a part is constituted by a roller bearing, and the other is constituted by a ball bearing. (C) All of the support means other than the support means located on the upper side are provided with a block-shaped sliding contact member 61 having a sliding contact surface made of a lubricious material, for example, as shown in FIG. Composed of As a lubricious material, for example,
Ultra-high molecular weight polyethylene can be used. This material has good lubricity and is excellent in abrasion resistance and water repellency. (D) Among the support means other than the support means located on the upper side, a part of the support means is provided with the block-shaped sliding contact member, and the remaining ones are ball bearings or roller bearings. It consists of.

(2) In the above embodiment, the shaft is provided with five stirring screws, and four of them are integrally moved along the longitudinal direction of the shaft. However, the present invention is not limited to this configuration.
The present invention may be implemented in various forms, such as a configuration in which five stirring screws are moved or a configuration in which all five stirring screws are moved.

(3) In the above embodiment, the shaft is provided with a plurality of stirring screws. However, the present invention is not limited to such a structure, and the shaft may be provided with one stirring screw. Good.

(4) In the above embodiment, as the moving means for driving and moving the support unit along the longitudinal direction of the shaft, the support unit is moved along the longitudinal direction of the shaft which cannot rotate around the axis. Although the configuration in which the reciprocating operation is performed over the set range has been illustrated, the present invention is not limited to such a configuration, and the following configuration may be employed. For example, an intermediate portion of a roller bearing as support means located on the upper side, a driving wheel body that is in contact with the outer peripheral surface of the shaft body in a state capable of rotating around a shaft axis in an oblique direction, By rotating the rotation by the rotation driving means, the driving wheel may travel while rotating on the outer peripheral surface along with the rotation, and the support unit may be moved at a low speed in the longitudinal direction. Good.

(5) In the above embodiment, the storage space is configured to be circular in plan view, and the shaft body is revolved and rotated. However, the storage space is not limited to such a configuration. It may be configured such that the stirring screw is moved along the longitudinal direction of the shaft body and the shaft body is moved in parallel in a direction perpendicular to the longitudinal direction, as the shaping screw is formed to be rectangular when viewed.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a grain processing facility.

FIG. 2 is a schematic side view of a storage unit.

FIG. 3 is a plan view of a stirring device.

FIG. 4 is a side view of the stirring device.

FIG. 5 is a plan view showing a moving operation unit.

FIG. 6 is a side view showing the moving operation unit.

FIG. 7 is a plan view of a wire winding portion.

FIG. 8 is a plan view of a support unit.

FIG. 9 is a side view of the support unit.

FIG. 10 is a longitudinal sectional view showing a support means.

FIG. 11 is a side view of the upper support means.

FIG. 12 is a longitudinal sectional view showing a supporting means of another embodiment.

[Explanation of symbols]

 Reference Signs 30 Shaft 38 Moving means 48 Support frame 60 Roller bearing 61 Sliding member

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F26B 9/06 F26B 9/06 E (72) Inventor Ryoichi Nishiyama 368-1 Yamakita-cho, Marugame-shi, Kagawa Stock Company Kawabe Kikai (72) Inventor Takeshi Harada 368-1 Yamakita-machi, Marugame-shi, Kagawa Prefecture Co., Ltd.Kawabe Machinery (72) Inventor Jitsumitsu Nakamura 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Factory (72) Inventor Masahiro Iwashita 64 Ishizukita-cho, Sakai City, Osaka, Japan, inside Kubota Sakai Works, Ltd. AA01 AB03 AC04 AC36 AC40 AC45 AC46 AC48 AC49 AC52 AC56 AC57 AC58 BA03 CA02 CB03 CB22 CB24 CB28 CB29 CB36 DA06 DA18 4G035 AB48 4G036 AC54 4G037 DA21 EA04 4G078 AA13 AB09 BA0 5 CA01 CA05 CA12 CA19 DA09 DB04 DB10 EA20

Claims (3)

[Claims] A shaft body having a circular cross section is provided above a storage space in which grains are stored, with its longitudinal direction oriented in a horizontal posture or a substantially horizontal posture. A support frame for supporting the stirring screw for stirring the grain in a hanging posture is provided, and the support frame is dispersedly arranged along a circumferential direction of an outer peripheral portion of the shaft, and the support frame is disposed with respect to an outer peripheral portion of the shaft. A plurality of supporting means for supporting the support frame so as to be movable along the longitudinal direction of the shaft body and movably along the circumferential direction of the shaft body so as to contact the outer peripheral portion of the shaft body. A grain stirrer provided with moving means for driving and moving the support frame along the longitudinal direction of the shaft, wherein at least an upper supporting means of the plurality of supporting means is located on an upper side. An axis crossing the longitudinal direction of the shaft body Is supported rotatably on the support frame side rotating around, grain stirring device that is configured with a roller bearing that contacts acts on the outer periphery of the shaft body. 2. The moving means sets the support frame along a longitudinal direction of the shaft that is not rotatable around the axis in a state where the shaft is non-rotatably supported around the axis. The grain stirring device according to claim 1, wherein the grain stirring device is configured to perform reciprocating operation over a range. 3. A support means other than the support means positioned on the upper side of the plurality of support means is provided with a block-shaped sliding contact member having a sliding contact surface made of a lubricious material. The grain stirring device according to claim 1.